powerpc: Move most remaining ppc64 files over to arch/powerpc

Also deletes files in arch/ppc64 that are no longer used now that
we don't compile with ARCH=ppc64 any more.

Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/Kconfig

@@ -932,6 +932,7 @@ source "arch/powerpc/oprofile/Kconfig"
 
 config KPROBES
 	bool "Kprobes (EXPERIMENTAL)"
+	depends on PPC64
 	help
 	  Kprobes allows you to trap at almost any kernel address and
 	  execute a callback function.  register_kprobe() establishes

arch/powerpc/kernel/Makefile

@@ -49,12 +49,23 @@ extra-y				+= vmlinux.lds
 obj-y				+= process.o init_task.o time.o \
 				   prom.o traps.o setup-common.o
 obj-$(CONFIG_PPC32)		+= entry_32.o setup_32.o misc_32.o systbl.o
-obj-$(CONFIG_PPC64)		+= misc_64.o
+obj-$(CONFIG_PPC64)		+= misc_64.o dma_64.o iommu.o
 obj-$(CONFIG_PPC_OF)		+= prom_init.o
 obj-$(CONFIG_MODULES)		+= ppc_ksyms.o
 obj-$(CONFIG_BOOTX_TEXT)	+= btext.o
 obj-$(CONFIG_6xx)		+= idle_6xx.o
 obj-$(CONFIG_SMP)		+= smp.o
+obj-$(CONFIG_KPROBES)		+= kprobes.o
+
+module-$(CONFIG_PPC64)		+= module_64.o
+obj-$(CONFIG_MODULES)		+= $(module-y)
+
+pci64-$(CONFIG_PPC64)		+= pci_64.o pci_dn.o pci_iommu.o \
+				   pci_direct_iommu.o iomap.o
+obj-$(CONFIG_PCI)		+= $(pci64-y)
+
+kexec64-$(CONFIG_PPC64)		+= machine_kexec_64.o
+obj-$(CONFIG_KEXEC)		+= $(kexec64-y)
 
 ifeq ($(CONFIG_PPC_ISERIES),y)
 $(obj)/head_64.o: $(obj)/lparmap.s
@@ -62,11 +73,8 @@ AFLAGS_head_64.o += -I$(obj)
 endif
 
 else
-# stuff used from here for ARCH=ppc or ARCH=ppc64
+# stuff used from here for ARCH=ppc
 smpobj-$(CONFIG_SMP)		+= smp.o
-obj-$(CONFIG_PPC64)		+= traps.o process.o init_task.o time.o \
-				   setup-common.o $(smpobj-y)
-
 
 endif
 

arch/powerpc/platforms/pseries/Makefile

@@ -4,4 +4,7 @@ obj-$(CONFIG_SMP)	+= smp.o
 obj-$(CONFIG_IBMVIO)	+= vio.o
 obj-$(CONFIG_XICS)	+= xics.o
 obj-$(CONFIG_SCANLOG)	+= scanlog.o
-obj-$(CONFIG_EEH)    += eeh.o eeh_event.o
+obj-$(CONFIG_EEH)	+= eeh.o eeh_event.o
+
+obj-$(CONFIG_HVC_CONSOLE)	+= hvconsole.o
+obj-$(CONFIG_HVCS)		+= hvcserver.o

arch/ppc64/Kconfig

@@ -1,520 +0,0 @@
-#
-# For a description of the syntax of this configuration file,
-# see Documentation/kbuild/kconfig-language.txt.
-#
-
-config 64BIT
-	def_bool y
-
-config MMU
-	bool
-	default y
-
-config PPC_STD_MMU
-	def_bool y
-
-config UID16
-	bool
-
-config RWSEM_GENERIC_SPINLOCK
-	bool
-
-config RWSEM_XCHGADD_ALGORITHM
-	bool
-	default y
-
-config GENERIC_CALIBRATE_DELAY
-	bool
-	default y
-
-config GENERIC_ISA_DMA
-	bool
-	default y
-
-config EARLY_PRINTK
-	bool
-	default y
-
-config COMPAT
-	bool
-	default y
-
-config SCHED_NO_NO_OMIT_FRAME_POINTER
-	bool
-	default y
-
-config ARCH_MAY_HAVE_PC_FDC
-	bool
-	default y
-
-config PPC_STD_MMU
-	bool
-	default y
-
-# We optimistically allocate largepages from the VM, so make the limit
-# large enough (16MB). This badly named config option is actually
-# max order + 1
-config FORCE_MAX_ZONEORDER
-	int
-	default "9" if PPC_64K_PAGES
-	default "13"
-
-source "init/Kconfig"
-
-config SYSVIPC_COMPAT
-	bool
-	depends on COMPAT && SYSVIPC
-	default y
-
-menu "Platform support"
-
-choice
-	prompt "Platform Type"
-	default PPC_MULTIPLATFORM
-
-config PPC_ISERIES
-	bool "IBM Legacy iSeries"
-
-config PPC_MULTIPLATFORM
-	bool "Generic"
-
-endchoice
-
-config PPC_PSERIES
-	depends on PPC_MULTIPLATFORM
-	bool "  IBM pSeries & new iSeries"
-	default y
-
-config PPC_BPA
-	bool "  Broadband Processor Architecture"
-	depends on PPC_MULTIPLATFORM
-
-config PPC_PMAC
-	depends on PPC_MULTIPLATFORM
-	bool "  Apple G5 based machines"
-	default y
-	select U3_DART
-	select GENERIC_TBSYNC
-
-config PPC_MAPLE
-	depends on PPC_MULTIPLATFORM
-	bool "  Maple 970FX Evaluation Board"
-	select U3_DART
-	select MPIC_BROKEN_U3
-	select GENERIC_TBSYNC
-	default n
-	help
-          This option enables support for the Maple 970FX Evaluation Board.
-	  For more informations, refer to <http://www.970eval.com>
-
-config PPC
-	bool
-	default y
-
-config PPC64
-	bool
-	default y
-
-config PPC_OF
-	depends on PPC_MULTIPLATFORM
-	bool
-	default y
-
-config XICS
-	depends on PPC_PSERIES
-	bool
-	default y
-
-config MPIC
-	depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE
-	bool
-	default y
-
-config PPC_I8259
-	depends on PPC_PSERIES
-	bool
-	default y
-
-config BPA_IIC
-	depends on PPC_BPA
-	bool
-	default y
-
-# VMX is pSeries only for now until somebody writes the iSeries
-# exception vectors for it
-config ALTIVEC
-	bool "Support for VMX (Altivec) vector unit"
-	depends on PPC_MULTIPLATFORM
-	default y
-
-config PPC_SPLPAR
-	depends on PPC_PSERIES
-	bool "Support for shared-processor logical partitions"
-	default n
-	help
-	  Enabling this option will make the kernel run more efficiently
-	  on logically-partitioned pSeries systems which use shared
-	  processors, that is, which share physical processors between
-	  two or more partitions.
-
-config KEXEC
-	bool "kexec system call (EXPERIMENTAL)"
-	depends on PPC_MULTIPLATFORM && EXPERIMENTAL
-	help
-	  kexec is a system call that implements the ability to shutdown your
-	  current kernel, and to start another kernel.  It is like a reboot
-	  but it is indepedent of the system firmware.  And like a reboot
-	  you can start any kernel with it, not just Linux.
-
-	  The name comes from the similiarity to the exec system call.
-
-	  It is an ongoing process to be certain the hardware in a machine
-	  is properly shutdown, so do not be surprised if this code does not
-	  initially work for you.  It may help to enable device hotplugging
-	  support.  As of this writing the exact hardware interface is
-	  strongly in flux, so no good recommendation can be made.
-
-source "drivers/cpufreq/Kconfig"
-
-config CPU_FREQ_PMAC64
-	bool "Support for some Apple G5s"
-	depends on CPU_FREQ && PMAC_SMU && PPC64
-	select CPU_FREQ_TABLE
-	help
-	  This adds support for frequency switching on Apple iMac G5,
-	  and some of the more recent desktop G5 machines as well.
-
-config IBMVIO
-	depends on PPC_PSERIES || PPC_ISERIES
-	bool
-	default y
-
-config U3_DART
-	bool 
-	depends on PPC_MULTIPLATFORM
-	default n
-
-config MPIC_BROKEN_U3
-	bool
-	depends on PPC_MAPLE
-	default y
-
-config GENERIC_TBSYNC
-	def_bool n
-
-config PPC_PMAC64
-	bool
-	depends on PPC_PMAC
-	default y
-
-config BOOTX_TEXT
-	bool "Support for early boot text console"
-	depends PPC_OF
-	help
-	  Say Y here to see progress messages from the boot firmware in text
-	  mode. Requires an Open Firmware compatible video card.
-
-config POWER4
-	def_bool y
-
-config PPC_FPU
-	def_bool y
-
-config POWER4_ONLY
-	bool "Optimize for POWER4"
-	default n
-	---help---
-	  Cause the compiler to optimize for POWER4 processors. The resulting
-	  binary will not work on POWER3 or RS64 processors when compiled with
-	  binutils 2.15 or later.
-
-config IOMMU_VMERGE
-	bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
-	depends on EXPERIMENTAL
-	default n
-	help
-	  Cause IO segments sent to a device for DMA to be merged virtually
-	  by the IOMMU when they happen to have been allocated contiguously.
-	  This doesn't add pressure to the IOMMU allocator. However, some
-	  drivers don't support getting large merged segments coming back
-	  from *_map_sg(). Say Y if you know the drivers you are using are
-	  properly handling this case.
-
-config SMP
-	bool "Symmetric multi-processing support"
-	---help---
-	  This enables support for systems with more than one CPU. If you have
-	  a system with only one CPU, say N. If you have a system with more
-	  than one CPU, say Y.
-
-	  If you say N here, the kernel will run on single and multiprocessor
-	  machines, but will use only one CPU of a multiprocessor machine. If
-	  you say Y here, the kernel will run on single-processor machines.
-	  On a single-processor machine, the kernel will run faster if you say
-	  N here.
-
-	  If you don't know what to do here, say Y.
-
-config NR_CPUS
-	int "Maximum number of CPUs (2-128)"
-	range 2 128
-	depends on SMP
-	default "32"
-
-config HMT
-	bool "Hardware multithreading"
-	depends on SMP && PPC_PSERIES && BROKEN
-	help
-	  This option enables hardware multithreading on RS64 cpus.
-	  pSeries systems p620 and p660 have such a cpu type.
-
-config NUMA
-	bool "NUMA support"
-	default y if SMP && PPC_PSERIES
-
-config ARCH_SELECT_MEMORY_MODEL
-	def_bool y
-
-config ARCH_FLATMEM_ENABLE
-       def_bool y
-       depends on !NUMA
-
-config ARCH_SPARSEMEM_ENABLE
-	def_bool y
-
-config ARCH_SPARSEMEM_DEFAULT
-	def_bool y
-	depends on NUMA
-
-source "mm/Kconfig"
-
-config HAVE_ARCH_EARLY_PFN_TO_NID
-	def_bool y
-	depends on NEED_MULTIPLE_NODES
-
-config ARCH_MEMORY_PROBE
-	def_bool y
-	depends on MEMORY_HOTPLUG
-
-# Some NUMA nodes have memory ranges that span
-# other nodes.  Even though a pfn is valid and
-# between a node's start and end pfns, it may not
-# reside on that node.
-#
-# This is a relatively temporary hack that should
-# be able to go away when sparsemem is fully in
-# place
-config NODES_SPAN_OTHER_NODES
-	def_bool y
-	depends on NEED_MULTIPLE_NODES
-
-config PPC_64K_PAGES
-	bool "64k page size"
-	help
-	  This option changes the kernel logical page size to 64k. On machines
-          without processor support for 64k pages, the kernel will simulate
-          them by loading each individual 4k page on demand transparently,
-          while on hardware with such support, it will be used to map
-          normal application pages.
-
-config SCHED_SMT
-	bool "SMT (Hyperthreading) scheduler support"
-	depends on SMP
-	default off
-	help
-	  SMT scheduler support improves the CPU scheduler's decision making
-	  when dealing with POWER5 cpus at a cost of slightly increased
-	  overhead in some places. If unsure say N here.
-
-source "kernel/Kconfig.preempt"
-source kernel/Kconfig.hz
-
-config EEH
-	bool "PCI Extended Error Handling (EEH)" if EMBEDDED
-	depends on PPC_PSERIES
-	default y if !EMBEDDED
-
-#
-# Use the generic interrupt handling code in kernel/irq/:
-#
-config GENERIC_HARDIRQS
-	bool
-	default y
-
-config PPC_RTAS
-	bool
-	depends on PPC_PSERIES || PPC_BPA
-	default y
-
-config RTAS_ERROR_LOGGING
-	bool
-	depends on PPC_RTAS
-	default y
-
-config RTAS_PROC
-	bool "Proc interface to RTAS"
-	depends on PPC_RTAS
-	default y
-
-config RTAS_FLASH
-	tristate "Firmware flash interface"
-	depends on RTAS_PROC
-
-config SCANLOG
-	tristate "Scanlog dump interface"
-	depends on RTAS_PROC && PPC_PSERIES
-
-config LPARCFG
-	tristate "LPAR Configuration Data"
-	depends on PPC_PSERIES || PPC_ISERIES
-	help
-	Provide system capacity information via human readable
-	<key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
-
-config SECCOMP
-	bool "Enable seccomp to safely compute untrusted bytecode"
-	depends on PROC_FS
-	default y
-	help
-	  This kernel feature is useful for number crunching applications
-	  that may need to compute untrusted bytecode during their
-	  execution. By using pipes or other transports made available to
-	  the process as file descriptors supporting the read/write
-	  syscalls, it's possible to isolate those applications in
-	  their own address space using seccomp. Once seccomp is
-	  enabled via /proc/<pid>/seccomp, it cannot be disabled
-	  and the task is only allowed to execute a few safe syscalls
-	  defined by each seccomp mode.
-
-	  If unsure, say Y. Only embedded should say N here.
-
-source "fs/Kconfig.binfmt"
-
-config HOTPLUG_CPU
-	bool "Support for hot-pluggable CPUs"
-	depends on SMP && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
-	select HOTPLUG
-	---help---
-	  Say Y here to be able to turn CPUs off and on.
-
-	  Say N if you are unsure.
-
-config PROC_DEVICETREE
-	bool "Support for Open Firmware device tree in /proc"
-	help
-	  This option adds a device-tree directory under /proc which contains
-	  an image of the device tree that the kernel copies from Open
-	  Firmware. If unsure, say Y here.
-
-config CMDLINE_BOOL
-	bool "Default bootloader kernel arguments"
-	depends on !PPC_ISERIES
-
-config CMDLINE
-	string "Initial kernel command string"
-	depends on CMDLINE_BOOL
-	default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
-	help
-	  On some platforms, there is currently no way for the boot loader to
-	  pass arguments to the kernel. For these platforms, you can supply
-	  some command-line options at build time by entering them here.  In
-	  most cases you will need to specify the root device here.
-
-endmenu
-
-config ISA_DMA_API
-	bool
-	default y
-
-menu "Bus Options"
-
-config ISA
-	bool
-	help
-	  Find out whether you have ISA slots on your motherboard.  ISA is the
-	  name of a bus system, i.e. the way the CPU talks to the other stuff
-	  inside your box.  If you have an Apple machine, say N here; if you
-	  have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
-	  you have an embedded board, consult your board documentation.
-
-config SBUS
-	bool
-
-config MCA
-	bool
-
-config EISA
-	bool
-
-config PCI
-	bool "support for PCI devices" if (EMBEDDED && PPC_ISERIES)
-	default y
-	help
-	  Find out whether your system includes a PCI bus. PCI is the name of
-	  a bus system, i.e. the way the CPU talks to the other stuff inside
-	  your box.  If you say Y here, the kernel will include drivers and
-	  infrastructure code to support PCI bus devices.
-
-config PCI_DOMAINS
-	bool
-	default PCI
-
-source "drivers/pci/Kconfig"
-
-source "drivers/pcmcia/Kconfig"
-
-source "drivers/pci/hotplug/Kconfig"
-
-endmenu
-
-source "net/Kconfig"
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-menu "iSeries device drivers"
-	depends on PPC_ISERIES
-
-config VIOCONS
-	tristate "iSeries Virtual Console Support"
-
-config VIODASD
-	tristate "iSeries Virtual I/O disk support"
-	help
-	  If you are running on an iSeries system and you want to use
- 	  virtual disks created and managed by OS/400, say Y.
-
-config VIOCD
-	tristate "iSeries Virtual I/O CD support"
-	help
-	  If you are running Linux on an IBM iSeries system and you want to
-	  read a CD drive owned by OS/400, say Y here.
-
-config VIOTAPE
-	tristate "iSeries Virtual Tape Support"
-	help
-	  If you are running Linux on an iSeries system and you want Linux
-	  to read and/or write a tape drive owned by OS/400, say Y here.
-
-endmenu
-
-config VIOPATH
-	bool
-	depends on VIOCONS || VIODASD || VIOCD || VIOTAPE || VETH
-	default y
-
-source "arch/powerpc/oprofile/Kconfig"
-
-source "arch/ppc64/Kconfig.debug"
-
-source "security/Kconfig"
-
-config KEYS_COMPAT
-	bool
-	depends on COMPAT && KEYS
-	default y
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"

arch/ppc64/kernel/Makefile

@@ -2,44 +2,6 @@
 # Makefile for the linux ppc64 kernel.
 #
 
-ifneq ($(CONFIG_PPC_MERGE),y)
-
-EXTRA_CFLAGS	+= -mno-minimal-toc
-extra-y		:= head.o vmlinux.lds
-
-obj-y               :=	misc.o prom.o
-
-endif
-
-obj-y               +=	idle.o dma.o \
-			align.o \
-			iommu.o
-
-pci-obj-$(CONFIG_PPC_MULTIPLATFORM)	+= pci_dn.o pci_direct_iommu.o
-
-obj-$(CONFIG_PCI)	+= pci.o pci_iommu.o iomap.o $(pci-obj-y)
+obj-y               +=	idle.o align.o
 
 obj-$(CONFIG_PPC_MULTIPLATFORM) += nvram.o
-ifneq ($(CONFIG_PPC_MERGE),y)
-obj-$(CONFIG_PPC_MULTIPLATFORM) += prom_init.o
-endif
-
-obj-$(CONFIG_KEXEC)		+= machine_kexec.o
-obj-$(CONFIG_MODULES)		+= module.o
-ifneq ($(CONFIG_PPC_MERGE),y)
-obj-$(CONFIG_MODULES)		+= ppc_ksyms.o
-endif
-obj-$(CONFIG_HVC_CONSOLE)	+= hvconsole.o
-ifneq ($(CONFIG_PPC_MERGE),y)
-obj-$(CONFIG_BOOTX_TEXT)	+= btext.o
-endif
-obj-$(CONFIG_HVCS)		+= hvcserver.o
-
-obj-$(CONFIG_KPROBES)		+= kprobes.o
-
-ifneq ($(CONFIG_PPC_MERGE),y)
-ifeq ($(CONFIG_PPC_ISERIES),y)
-arch/ppc64/kernel/head.o: arch/powerpc/kernel/lparmap.s
-AFLAGS_head.o += -Iarch/powerpc/kernel
-endif
-endif

arch/ppc64/kernel/asm-offsets.c

@@ -1,195 +0,0 @@
-/*
- * This program is used to generate definitions needed by
- * assembly language modules.
- *
- * We use the technique used in the OSF Mach kernel code:
- * generate asm statements containing #defines,
- * compile this file to assembler, and then extract the
- * #defines from the assembly-language output.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/config.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/errno.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/mman.h>
-#include <linux/mm.h>
-#include <linux/time.h>
-#include <linux/hardirq.h>
-#include <asm/io.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-#include <asm/processor.h>
-
-#include <asm/paca.h>
-#include <asm/lppaca.h>
-#include <asm/iseries/hv_lp_event.h>
-#include <asm/rtas.h>
-#include <asm/cputable.h>
-#include <asm/cache.h>
-#include <asm/systemcfg.h>
-#include <asm/compat.h>
-
-#define DEFINE(sym, val) \
-	asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-
-#define BLANK() asm volatile("\n->" : : )
-
-int main(void)
-{
-	/* thread struct on stack */
-	DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
-	DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
-	DEFINE(TI_SC_NOERR, offsetof(struct thread_info, syscall_noerror));
-
-	/* task_struct->thread */
-	DEFINE(THREAD, offsetof(struct task_struct, thread));
-	DEFINE(PT_REGS, offsetof(struct thread_struct, regs));
-	DEFINE(THREAD_FPEXC_MODE, offsetof(struct thread_struct, fpexc_mode));
-	DEFINE(THREAD_FPR0, offsetof(struct thread_struct, fpr[0]));
-	DEFINE(THREAD_FPSCR, offsetof(struct thread_struct, fpscr));
-	DEFINE(KSP, offsetof(struct thread_struct, ksp));
-	DEFINE(KSP_VSID, offsetof(struct thread_struct, ksp_vsid));
-
-#ifdef CONFIG_ALTIVEC
-	DEFINE(THREAD_VR0, offsetof(struct thread_struct, vr[0]));
-	DEFINE(THREAD_VRSAVE, offsetof(struct thread_struct, vrsave));
-	DEFINE(THREAD_VSCR, offsetof(struct thread_struct, vscr));
-	DEFINE(THREAD_USED_VR, offsetof(struct thread_struct, used_vr));
-#endif /* CONFIG_ALTIVEC */
-	DEFINE(MM, offsetof(struct task_struct, mm));
-	DEFINE(AUDITCONTEXT, offsetof(struct task_struct, audit_context));
-
-	DEFINE(DCACHEL1LINESIZE, offsetof(struct ppc64_caches, dline_size));
-	DEFINE(DCACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_dline_size));
-	DEFINE(DCACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, dlines_per_page));
-	DEFINE(ICACHEL1LINESIZE, offsetof(struct ppc64_caches, iline_size));
-	DEFINE(ICACHEL1LOGLINESIZE, offsetof(struct ppc64_caches, log_iline_size));
-	DEFINE(ICACHEL1LINESPERPAGE, offsetof(struct ppc64_caches, ilines_per_page));
-	DEFINE(PLATFORM_LPAR, PLATFORM_LPAR);
-
-	/* paca */
-        DEFINE(PACA_SIZE, sizeof(struct paca_struct));
-        DEFINE(PACAPACAINDEX, offsetof(struct paca_struct, paca_index));
-        DEFINE(PACAPROCSTART, offsetof(struct paca_struct, cpu_start));
-        DEFINE(PACAKSAVE, offsetof(struct paca_struct, kstack));
-	DEFINE(PACACURRENT, offsetof(struct paca_struct, __current));
-        DEFINE(PACASAVEDMSR, offsetof(struct paca_struct, saved_msr));
-        DEFINE(PACASTABREAL, offsetof(struct paca_struct, stab_real));
-        DEFINE(PACASTABVIRT, offsetof(struct paca_struct, stab_addr));
-	DEFINE(PACASTABRR, offsetof(struct paca_struct, stab_rr));
-        DEFINE(PACAR1, offsetof(struct paca_struct, saved_r1));
-	DEFINE(PACATOC, offsetof(struct paca_struct, kernel_toc));
-	DEFINE(PACAPROCENABLED, offsetof(struct paca_struct, proc_enabled));
-	DEFINE(PACASLBCACHE, offsetof(struct paca_struct, slb_cache));
-	DEFINE(PACASLBCACHEPTR, offsetof(struct paca_struct, slb_cache_ptr));
-	DEFINE(PACACONTEXTID, offsetof(struct paca_struct, context.id));
-#ifdef CONFIG_PPC_64K_PAGES
-	DEFINE(PACAPGDIR, offsetof(struct paca_struct, pgdir));
-#endif
-#ifdef CONFIG_HUGETLB_PAGE
-	DEFINE(PACALOWHTLBAREAS, offsetof(struct paca_struct, context.low_htlb_areas));
-	DEFINE(PACAHIGHHTLBAREAS, offsetof(struct paca_struct, context.high_htlb_areas));
-#endif /* CONFIG_HUGETLB_PAGE */
-	DEFINE(PACADEFAULTDECR, offsetof(struct paca_struct, default_decr));
-        DEFINE(PACA_EXGEN, offsetof(struct paca_struct, exgen));
-        DEFINE(PACA_EXMC, offsetof(struct paca_struct, exmc));
-        DEFINE(PACA_EXSLB, offsetof(struct paca_struct, exslb));
-        DEFINE(PACA_EXDSI, offsetof(struct paca_struct, exdsi));
-        DEFINE(PACAEMERGSP, offsetof(struct paca_struct, emergency_sp));
-	DEFINE(PACALPPACA, offsetof(struct paca_struct, lppaca));
-	DEFINE(PACAHWCPUID, offsetof(struct paca_struct, hw_cpu_id));
-	DEFINE(LPPACASRR0, offsetof(struct lppaca, saved_srr0));
-	DEFINE(LPPACASRR1, offsetof(struct lppaca, saved_srr1));
-	DEFINE(LPPACAANYINT, offsetof(struct lppaca, int_dword.any_int));
-	DEFINE(LPPACADECRINT, offsetof(struct lppaca, int_dword.fields.decr_int));
-
-	/* RTAS */
-	DEFINE(RTASBASE, offsetof(struct rtas_t, base));
-	DEFINE(RTASENTRY, offsetof(struct rtas_t, entry));
-
-	/* Interrupt register frame */
-	DEFINE(STACK_FRAME_OVERHEAD, STACK_FRAME_OVERHEAD);
-
-	DEFINE(SWITCH_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs));
-
-	/* 288 = # of volatile regs, int & fp, for leaf routines */
-	/* which do not stack a frame.  See the PPC64 ABI.       */
-	DEFINE(INT_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 288);
-	/* Create extra stack space for SRR0 and SRR1 when calling prom/rtas. */
-	DEFINE(PROM_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
-	DEFINE(RTAS_FRAME_SIZE, STACK_FRAME_OVERHEAD + sizeof(struct pt_regs) + 16);
-	DEFINE(GPR0, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[0]));
-	DEFINE(GPR1, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[1]));
-	DEFINE(GPR2, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[2]));
-	DEFINE(GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[3]));
-	DEFINE(GPR4, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[4]));
-	DEFINE(GPR5, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[5]));
-	DEFINE(GPR6, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[6]));
-	DEFINE(GPR7, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[7]));
-	DEFINE(GPR8, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[8]));
-	DEFINE(GPR9, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[9]));
-	DEFINE(GPR10, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[10]));
-	DEFINE(GPR11, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[11]));
-	DEFINE(GPR12, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[12]));
-	DEFINE(GPR13, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, gpr[13]));
-	/*
-	 * Note: these symbols include _ because they overlap with special
-	 * register names
-	 */
-	DEFINE(_NIP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, nip));
-	DEFINE(_MSR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, msr));
-	DEFINE(_CTR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ctr));
-	DEFINE(_LINK, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, link));
-	DEFINE(_CCR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, ccr));
-	DEFINE(_XER, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, xer));
-	DEFINE(_DAR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dar));
-	DEFINE(_DSISR, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, dsisr));
-	DEFINE(ORIG_GPR3, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, orig_gpr3));
-	DEFINE(RESULT, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, result));
-	DEFINE(_TRAP, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, trap));
-	DEFINE(SOFTE, STACK_FRAME_OVERHEAD+offsetof(struct pt_regs, softe));
-
-	/* These _only_ to be used with {PROM,RTAS}_FRAME_SIZE!!! */
-	DEFINE(_SRR0, STACK_FRAME_OVERHEAD+sizeof(struct pt_regs));
-	DEFINE(_SRR1, STACK_FRAME_OVERHEAD+sizeof(struct pt_regs)+8);
-
-	DEFINE(CLONE_VM, CLONE_VM);
-	DEFINE(CLONE_UNTRACED, CLONE_UNTRACED);
-
-	/* About the CPU features table */
-	DEFINE(CPU_SPEC_ENTRY_SIZE, sizeof(struct cpu_spec));
-	DEFINE(CPU_SPEC_PVR_MASK, offsetof(struct cpu_spec, pvr_mask));
-	DEFINE(CPU_SPEC_PVR_VALUE, offsetof(struct cpu_spec, pvr_value));
-	DEFINE(CPU_SPEC_FEATURES, offsetof(struct cpu_spec, cpu_features));
-	DEFINE(CPU_SPEC_SETUP, offsetof(struct cpu_spec, cpu_setup));
-
-	/* systemcfg offsets for use by vdso */
-	DEFINE(CFG_TB_ORIG_STAMP, offsetof(struct systemcfg, tb_orig_stamp));
-	DEFINE(CFG_TB_TICKS_PER_SEC, offsetof(struct systemcfg, tb_ticks_per_sec));
-	DEFINE(CFG_TB_TO_XS, offsetof(struct systemcfg, tb_to_xs));
-	DEFINE(CFG_STAMP_XSEC, offsetof(struct systemcfg, stamp_xsec));
-	DEFINE(CFG_TB_UPDATE_COUNT, offsetof(struct systemcfg, tb_update_count));
-	DEFINE(CFG_TZ_MINUTEWEST, offsetof(struct systemcfg, tz_minuteswest));
-	DEFINE(CFG_TZ_DSTTIME, offsetof(struct systemcfg, tz_dsttime));
-	DEFINE(CFG_SYSCALL_MAP32, offsetof(struct systemcfg, syscall_map_32));
-	DEFINE(CFG_SYSCALL_MAP64, offsetof(struct systemcfg, syscall_map_64));
-
-	/* timeval/timezone offsets for use by vdso */
-	DEFINE(TVAL64_TV_SEC, offsetof(struct timeval, tv_sec));
-	DEFINE(TVAL64_TV_USEC, offsetof(struct timeval, tv_usec));
-	DEFINE(TVAL32_TV_SEC, offsetof(struct compat_timeval, tv_sec));
-	DEFINE(TVAL32_TV_USEC, offsetof(struct compat_timeval, tv_usec));
-	DEFINE(TZONE_TZ_MINWEST, offsetof(struct timezone, tz_minuteswest));
-	DEFINE(TZONE_TZ_DSTTIME, offsetof(struct timezone, tz_dsttime));
-
-	return 0;
-}

arch/ppc64/kernel/btext.c

@@ -1,792 +0,0 @@
-/*
- * Procedures for drawing on the screen early on in the boot process.
- *
- * Benjamin Herrenschmidt <benh@kernel.crashing.org>
- */
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/init.h>
-
-#include <asm/sections.h>
-#include <asm/prom.h>
-#include <asm/btext.h>
-#include <asm/prom.h>
-#include <asm/page.h>
-#include <asm/mmu.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/lmb.h>
-#include <asm/processor.h>
-#include <asm/udbg.h>
-
-#undef NO_SCROLL
-
-#ifndef NO_SCROLL
-static void scrollscreen(void);
-#endif
-
-static void draw_byte(unsigned char c, long locX, long locY);
-static void draw_byte_32(unsigned char *bits, unsigned int *base, int rb);
-static void draw_byte_16(unsigned char *bits, unsigned int *base, int rb);
-static void draw_byte_8(unsigned char *bits, unsigned int *base, int rb);
-
-static int g_loc_X;
-static int g_loc_Y;
-static int g_max_loc_X;
-static int g_max_loc_Y;
-
-static int dispDeviceRowBytes;
-static int dispDeviceDepth;
-static int dispDeviceRect[4];
-static unsigned char *dispDeviceBase, *logicalDisplayBase;
-
-unsigned long disp_BAT[2] __initdata = {0, 0};
-
-#define cmapsz	(16*256)
-
-static unsigned char vga_font[cmapsz];
-
-int boot_text_mapped;
-int force_printk_to_btext = 0;
-
-
-/* Here's a small text engine to use during early boot
- * or for debugging purposes
- *
- * todo:
- *
- *  - build some kind of vgacon with it to enable early printk
- *  - move to a separate file
- *  - add a few video driver hooks to keep in sync with display
- *    changes.
- */
-
-void map_boot_text(void)
-{
-	unsigned long base, offset, size;
-	unsigned char *vbase;
-
-	/* By default, we are no longer mapped */
-	boot_text_mapped = 0;
-	if (dispDeviceBase == 0)
-		return;
-	base = ((unsigned long) dispDeviceBase) & 0xFFFFF000UL;
-	offset = ((unsigned long) dispDeviceBase) - base;
-	size = dispDeviceRowBytes * dispDeviceRect[3] + offset
-		+ dispDeviceRect[0];
-	vbase = __ioremap(base, size, _PAGE_NO_CACHE);
-	if (vbase == 0)
-		return;
-	logicalDisplayBase = vbase + offset;
-	boot_text_mapped = 1;
-}
-
-int btext_initialize(struct device_node *np)
-{
-	unsigned int width, height, depth, pitch;
-	unsigned long address = 0;
-	u32 *prop;
-
-	prop = (u32 *)get_property(np, "width", NULL);
-	if (prop == NULL)
-		return -EINVAL;
-	width = *prop;
-	prop = (u32 *)get_property(np, "height", NULL);
-	if (prop == NULL)
-		return -EINVAL;
-	height = *prop;
-	prop = (u32 *)get_property(np, "depth", NULL);
-	if (prop == NULL)
-		return -EINVAL;
-	depth = *prop;
-	pitch = width * ((depth + 7) / 8);
-	prop = (u32 *)get_property(np, "linebytes", NULL);
-	if (prop)
-		pitch = *prop;
-	if (pitch == 1)
-		pitch = 0x1000;
-	prop = (u32 *)get_property(np, "address", NULL);
-	if (prop)
-		address = *prop;
-
-	/* FIXME: Add support for PCI reg properties */
-
-	if (address == 0)
-		return -EINVAL;
-
-	g_loc_X = 0;
-	g_loc_Y = 0;
-	g_max_loc_X = width / 8;
-	g_max_loc_Y = height / 16;
-	logicalDisplayBase = (unsigned char *)address;
-	dispDeviceBase = (unsigned char *)address;
-	dispDeviceRowBytes = pitch;
-	dispDeviceDepth = depth;
-	dispDeviceRect[0] = dispDeviceRect[1] = 0;
-	dispDeviceRect[2] = width;
-	dispDeviceRect[3] = height;
-
-	map_boot_text();
-
-	return 0;
-}
-
-static void btext_putc(unsigned char c)
-{
-	btext_drawchar(c);
-}
-
-void __init init_boot_display(void)
-{
-	char *name;
-	struct device_node *np = NULL; 
-	int rc = -ENODEV;
-
-	printk("trying to initialize btext ...\n");
-
-	name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
-	if (name != NULL) {
-		np = of_find_node_by_path(name);
-		if (np != NULL) {
-			if (strcmp(np->type, "display") != 0) {
-				printk("boot stdout isn't a display !\n");
-				of_node_put(np);
-				np = NULL;
-			}
-		}
-	}
-	if (np)
-		rc = btext_initialize(np);
-	if (rc) {
-		for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
-			if (get_property(np, "linux,opened", NULL)) {
-				printk("trying %s ...\n", np->full_name);
-				rc = btext_initialize(np);
-				printk("result: %d\n", rc);
-			}
-			if (rc == 0)
-				break;
-		}
-	}
-	if (rc == 0 && udbg_putc == NULL)
-		udbg_putc = btext_putc;
-}
-
-
-/* Calc the base address of a given point (x,y) */
-static unsigned char * calc_base(int x, int y)
-{
-	unsigned char *base;
-
-	base = logicalDisplayBase;
-	if (base == 0)
-		base = dispDeviceBase;
-	base += (x + dispDeviceRect[0]) * (dispDeviceDepth >> 3);
-	base += (y + dispDeviceRect[1]) * dispDeviceRowBytes;
-	return base;
-}
-
-/* Adjust the display to a new resolution */
-void btext_update_display(unsigned long phys, int width, int height,
-			  int depth, int pitch)
-{
-	if (dispDeviceBase == 0)
-		return;
-
-	/* check it's the same frame buffer (within 256MB) */
-	if ((phys ^ (unsigned long)dispDeviceBase) & 0xf0000000)
-		return;
-
-	dispDeviceBase = (__u8 *) phys;
-	dispDeviceRect[0] = 0;
-	dispDeviceRect[1] = 0;
-	dispDeviceRect[2] = width;
-	dispDeviceRect[3] = height;
-	dispDeviceDepth = depth;
-	dispDeviceRowBytes = pitch;
-	if (boot_text_mapped) {
-		iounmap(logicalDisplayBase);
-		boot_text_mapped = 0;
-	}
-	map_boot_text();
-	g_loc_X = 0;
-	g_loc_Y = 0;
-	g_max_loc_X = width / 8;
-	g_max_loc_Y = height / 16;
-}
-
-void btext_clearscreen(void)
-{
-	unsigned long *base	= (unsigned long *)calc_base(0, 0);
-	unsigned long width 	= ((dispDeviceRect[2] - dispDeviceRect[0]) *
-					(dispDeviceDepth >> 3)) >> 3;
-	int i,j;
-
-	for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1]); i++)
-	{
-		unsigned long *ptr = base;
-		for(j=width; j; --j)
-			*(ptr++) = 0;
-		base += (dispDeviceRowBytes >> 3);
-	}
-}
-
-#ifndef NO_SCROLL
-static void scrollscreen(void)
-{
-	unsigned long *src     	= (unsigned long *)calc_base(0,16);
-	unsigned long *dst     	= (unsigned long *)calc_base(0,0);
-	unsigned long width    	= ((dispDeviceRect[2] - dispDeviceRect[0]) *
-				   (dispDeviceDepth >> 3)) >> 3;
-	int i,j;
-
-	for (i=0; i<(dispDeviceRect[3] - dispDeviceRect[1] - 16); i++)
-	{
-		unsigned long *src_ptr = src;
-		unsigned long *dst_ptr = dst;
-		for(j=width; j; --j)
-			*(dst_ptr++) = *(src_ptr++);
-		src += (dispDeviceRowBytes >> 3);
-		dst += (dispDeviceRowBytes >> 3);
-	}
-	for (i=0; i<16; i++)
-	{
-		unsigned long *dst_ptr = dst;
-		for(j=width; j; --j)
-			*(dst_ptr++) = 0;
-		dst += (dispDeviceRowBytes >> 3);
-	}
-}
-#endif /* ndef NO_SCROLL */
-
-void btext_drawchar(char c)
-{
-	int cline = 0;
-#ifdef NO_SCROLL
-	int x;
-#endif
-	if (!boot_text_mapped)
-		return;
-
-	switch (c) {
-	case '\b':
-		if (g_loc_X > 0)
-			--g_loc_X;
-		break;
-	case '\t':
-		g_loc_X = (g_loc_X & -8) + 8;
-		break;
-	case '\r':
-		g_loc_X = 0;
-		break;
-	case '\n':
-		g_loc_X = 0;
-		g_loc_Y++;
-		cline = 1;
-		break;
-	default:
-		draw_byte(c, g_loc_X++, g_loc_Y);
-	}
-	if (g_loc_X >= g_max_loc_X) {
-		g_loc_X = 0;
-		g_loc_Y++;
-		cline = 1;
-	}
-#ifndef NO_SCROLL
-	while (g_loc_Y >= g_max_loc_Y) {
-		scrollscreen();
-		g_loc_Y--;
-	}
-#else
-	/* wrap around from bottom to top of screen so we don't
-	   waste time scrolling each line.  -- paulus. */
-	if (g_loc_Y >= g_max_loc_Y)
-		g_loc_Y = 0;
-	if (cline) {
-		for (x = 0; x < g_max_loc_X; ++x)
-			draw_byte(' ', x, g_loc_Y);
-	}
-#endif
-}
-
-void btext_drawstring(const char *c)
-{
-	if (!boot_text_mapped)
-		return;
-	while (*c)
-		btext_drawchar(*c++);
-}
-
-void btext_drawhex(unsigned long v)
-{
-	char *hex_table = "0123456789abcdef";
-
-	if (!boot_text_mapped)
-		return;
-	btext_drawchar(hex_table[(v >> 60) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 56) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 52) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 48) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 44) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 40) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 36) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 32) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 28) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 24) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 20) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 16) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >> 12) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >>  8) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >>  4) & 0x0000000FUL]);
-	btext_drawchar(hex_table[(v >>  0) & 0x0000000FUL]);
-	btext_drawchar(' ');
-}
-
-static void draw_byte(unsigned char c, long locX, long locY)
-{
-	unsigned char *base	= calc_base(locX << 3, locY << 4);
-	unsigned char *font	= &vga_font[((unsigned int)c) * 16];
-	int rb			= dispDeviceRowBytes;
-
-	switch(dispDeviceDepth) {
-	case 24:
-	case 32:
-		draw_byte_32(font, (unsigned int *)base, rb);
-		break;
-	case 15:
-	case 16:
-		draw_byte_16(font, (unsigned int *)base, rb);
-		break;
-	case 8:
-		draw_byte_8(font, (unsigned int *)base, rb);
-		break;
-	}
-}
-
-static unsigned int expand_bits_8[16] = {
-	0x00000000,
-	0x000000ff,
-	0x0000ff00,
-	0x0000ffff,
-	0x00ff0000,
-	0x00ff00ff,
-	0x00ffff00,
-	0x00ffffff,
-	0xff000000,
-	0xff0000ff,
-	0xff00ff00,
-	0xff00ffff,
-	0xffff0000,
-	0xffff00ff,
-	0xffffff00,
-	0xffffffff
-};
-
-static unsigned int expand_bits_16[4] = {
-	0x00000000,
-	0x0000ffff,
-	0xffff0000,
-	0xffffffff
-};
-
-
-static void draw_byte_32(unsigned char *font, unsigned int *base, int rb)
-{
-	int l, bits;
-	int fg = 0xFFFFFFFFUL;
-	int bg = 0x00000000UL;
-
-	for (l = 0; l < 16; ++l)
-	{
-		bits = *font++;
-		base[0] = (-(bits >> 7) & fg) ^ bg;
-		base[1] = (-((bits >> 6) & 1) & fg) ^ bg;
-		base[2] = (-((bits >> 5) & 1) & fg) ^ bg;
-		base[3] = (-((bits >> 4) & 1) & fg) ^ bg;
-		base[4] = (-((bits >> 3) & 1) & fg) ^ bg;
-		base[5] = (-((bits >> 2) & 1) & fg) ^ bg;
-		base[6] = (-((bits >> 1) & 1) & fg) ^ bg;
-		base[7] = (-(bits & 1) & fg) ^ bg;
-		base = (unsigned int *) ((char *)base + rb);
-	}
-}
-
-static void draw_byte_16(unsigned char *font, unsigned int *base, int rb)
-{
-	int l, bits;
-	int fg = 0xFFFFFFFFUL;
-	int bg = 0x00000000UL;
-	unsigned int *eb = (int *)expand_bits_16;
-
-	for (l = 0; l < 16; ++l)
-	{
-		bits = *font++;
-		base[0] = (eb[bits >> 6] & fg) ^ bg;
-		base[1] = (eb[(bits >> 4) & 3] & fg) ^ bg;
-		base[2] = (eb[(bits >> 2) & 3] & fg) ^ bg;
-		base[3] = (eb[bits & 3] & fg) ^ bg;
-		base = (unsigned int *) ((char *)base + rb);
-	}
-}
-
-static void draw_byte_8(unsigned char *font, unsigned int *base, int rb)
-{
-	int l, bits;
-	int fg = 0x0F0F0F0FUL;
-	int bg = 0x00000000UL;
-	unsigned int *eb = (int *)expand_bits_8;
-
-	for (l = 0; l < 16; ++l)
-	{
-		bits = *font++;
-		base[0] = (eb[bits >> 4] & fg) ^ bg;
-		base[1] = (eb[bits & 0xf] & fg) ^ bg;
-		base = (unsigned int *) ((char *)base + rb);
-	}
-}
-
-static unsigned char vga_font[cmapsz] = {
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0x81, 0xa5, 0x81, 0x81, 0xbd,
-0x99, 0x81, 0x81, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xff,
-0xdb, 0xff, 0xff, 0xc3, 0xe7, 0xff, 0xff, 0x7e, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x6c, 0xfe, 0xfe, 0xfe, 0xfe, 0x7c, 0x38, 0x10,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x38, 0x7c, 0xfe,
-0x7c, 0x38, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18,
-0x3c, 0x3c, 0xe7, 0xe7, 0xe7, 0x18, 0x18, 0x3c, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x18, 0x3c, 0x7e, 0xff, 0xff, 0x7e, 0x18, 0x18, 0x3c,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x3c,
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-0x00, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x00, 0xfe, 0x00, 0x00, 0xfe, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x7e, 0x18,
-0x18, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30,
-0x18, 0x0c, 0x06, 0x0c, 0x18, 0x30, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x0c, 0x18, 0x30, 0x60, 0x30, 0x18, 0x0c, 0x00, 0x7e,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0e, 0x1b, 0x1b, 0x1b, 0x18, 0x18,
-0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18,
-0x18, 0x18, 0x18, 0x18, 0xd8, 0xd8, 0xd8, 0x70, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x7e, 0x00, 0x18, 0x18, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0xdc, 0x00,
-0x76, 0xdc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x38, 0x6c, 0x6c,
-0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0f, 0x0c, 0x0c,
-0x0c, 0x0c, 0x0c, 0xec, 0x6c, 0x6c, 0x3c, 0x1c, 0x00, 0x00, 0x00, 0x00,
-0x00, 0xd8, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x00, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0xd8, 0x30, 0x60, 0xc8, 0xf8, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-0x00, 0x00, 0x00, 0x00,
-};

arch/ppc64/kernel/head.S

@@ -1,2007 +0,0 @@
-/*
- *  arch/ppc64/kernel/head.S
- *
- *  PowerPC version
- *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- *  Rewritten by Cort Dougan (cort@cs.nmt.edu) for PReP
- *    Copyright (C) 1996 Cort Dougan <cort@cs.nmt.edu>
- *  Adapted for Power Macintosh by Paul Mackerras.
- *  Low-level exception handlers and MMU support
- *  rewritten by Paul Mackerras.
- *    Copyright (C) 1996 Paul Mackerras.
- *
- *  Adapted for 64bit PowerPC by Dave Engebretsen, Peter Bergner, and
- *    Mike Corrigan {engebret|bergner|mikejc}@us.ibm.com
- *
- *  This file contains the low-level support and setup for the
- *  PowerPC-64 platform, including trap and interrupt dispatch.
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
- */
-
-#include <linux/config.h>
-#include <linux/threads.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/mmu.h>
-#include <asm/ppc_asm.h>
-#include <asm/asm-offsets.h>
-#include <asm/bug.h>
-#include <asm/cputable.h>
-#include <asm/setup.h>
-#include <asm/hvcall.h>
-#include <asm/iseries/lpar_map.h>
-#include <asm/thread_info.h>
-
-#ifdef CONFIG_PPC_ISERIES
-#define DO_SOFT_DISABLE
-#endif
-
-/*
- * We layout physical memory as follows:
- * 0x0000 - 0x00ff : Secondary processor spin code
- * 0x0100 - 0x2fff : pSeries Interrupt prologs
- * 0x3000 - 0x5fff : interrupt support, iSeries and common interrupt prologs
- * 0x6000 - 0x6fff : Initial (CPU0) segment table
- * 0x7000 - 0x7fff : FWNMI data area
- * 0x8000 -        : Early init and support code
- */
-
-/*
- *   SPRG Usage
- *
- *   Register	Definition
- *
- *   SPRG0	reserved for hypervisor
- *   SPRG1	temp - used to save gpr
- *   SPRG2	temp - used to save gpr
- *   SPRG3	virt addr of paca
- */
-
-/*
- * Entering into this code we make the following assumptions:
- *  For pSeries:
- *   1. The MMU is off & open firmware is running in real mode.
- *   2. The kernel is entered at __start
- *
- *  For iSeries:
- *   1. The MMU is on (as it always is for iSeries)
- *   2. The kernel is entered at system_reset_iSeries
- */
-
-	.text
-	.globl  _stext
-_stext:
-#ifdef CONFIG_PPC_MULTIPLATFORM
-_GLOBAL(__start)
-	/* NOP this out unconditionally */
-BEGIN_FTR_SECTION
-	b	.__start_initialization_multiplatform
-END_FTR_SECTION(0, 1)
-#endif /* CONFIG_PPC_MULTIPLATFORM */
-
-	/* Catch branch to 0 in real mode */
-	trap
-
-#ifdef CONFIG_PPC_ISERIES
-	/*
-	 * At offset 0x20, there is a pointer to iSeries LPAR data.
-	 * This is required by the hypervisor
-	 */
-	. = 0x20
-	.llong hvReleaseData-KERNELBASE
-
-	/*
-	 * At offset 0x28 and 0x30 are offsets to the mschunks_map
-	 * array (used by the iSeries LPAR debugger to do translation
-	 * between physical addresses and absolute addresses) and
-	 * to the pidhash table (also used by the debugger)
-	 */
-	.llong mschunks_map-KERNELBASE
-	.llong 0	/* pidhash-KERNELBASE SFRXXX */
-
-	/* Offset 0x38 - Pointer to start of embedded System.map */
-	.globl	embedded_sysmap_start
-embedded_sysmap_start:
-	.llong	0
-	/* Offset 0x40 - Pointer to end of embedded System.map */
-	.globl	embedded_sysmap_end
-embedded_sysmap_end:
-	.llong	0
-
-#endif /* CONFIG_PPC_ISERIES */
-
-	/* Secondary processors spin on this value until it goes to 1. */
-	.globl  __secondary_hold_spinloop
-__secondary_hold_spinloop:
-	.llong	0x0
-
-	/* Secondary processors write this value with their cpu # */
-	/* after they enter the spin loop immediately below.	  */
-	.globl	__secondary_hold_acknowledge
-__secondary_hold_acknowledge:
-	.llong	0x0
-
-	. = 0x60
-/*
- * The following code is used on pSeries to hold secondary processors
- * in a spin loop after they have been freed from OpenFirmware, but
- * before the bulk of the kernel has been relocated.  This code
- * is relocated to physical address 0x60 before prom_init is run.
- * All of it must fit below the first exception vector at 0x100.
- */
-_GLOBAL(__secondary_hold)
-	mfmsr	r24
-	ori	r24,r24,MSR_RI
-	mtmsrd	r24			/* RI on */
-
-	/* Grab our linux cpu number */
-	mr	r24,r3
-
-	/* Tell the master cpu we're here */
-	/* Relocation is off & we are located at an address less */
-	/* than 0x100, so only need to grab low order offset.    */
-	std	r24,__secondary_hold_acknowledge@l(0)
-	sync
-
-	/* All secondary cpus wait here until told to start. */
-100:	ld	r4,__secondary_hold_spinloop@l(0)
-	cmpdi	0,r4,1
-	bne	100b
-
-#ifdef CONFIG_HMT
-	b	.hmt_init
-#else
-#ifdef CONFIG_SMP
-	mr	r3,r24
-	b	.pSeries_secondary_smp_init
-#else
-	BUG_OPCODE
-#endif
-#endif
-
-/* This value is used to mark exception frames on the stack. */
-	.section ".toc","aw"
-exception_marker:
-	.tc	ID_72656773_68657265[TC],0x7265677368657265
-	.text
-
-/*
- * The following macros define the code that appears as
- * the prologue to each of the exception handlers.  They
- * are split into two parts to allow a single kernel binary
- * to be used for pSeries and iSeries.
- * LOL.  One day... - paulus
- */
-
-/*
- * We make as much of the exception code common between native
- * exception handlers (including pSeries LPAR) and iSeries LPAR
- * implementations as possible.
- */
-
-/*
- * This is the start of the interrupt handlers for pSeries
- * This code runs with relocation off.
- */
-#define EX_R9		0
-#define EX_R10		8
-#define EX_R11		16
-#define EX_R12		24
-#define EX_R13		32
-#define EX_SRR0		40
-#define EX_DAR		48
-#define EX_DSISR	56
-#define EX_CCR		60
-#define EX_R3		64
-#define EX_LR		72
-
-#define EXCEPTION_PROLOG_PSERIES(area, label)				\
-	mfspr	r13,SPRN_SPRG3;		/* get paca address into r13 */	\
-	std	r9,area+EX_R9(r13);	/* save r9 - r12 */		\
-	std	r10,area+EX_R10(r13);					\
-	std	r11,area+EX_R11(r13);					\
-	std	r12,area+EX_R12(r13);					\
-	mfspr	r9,SPRN_SPRG1;						\
-	std	r9,area+EX_R13(r13);					\
-	mfcr	r9;							\
-	clrrdi	r12,r13,32;		/* get high part of &label */	\
-	mfmsr	r10;							\
-	mfspr	r11,SPRN_SRR0;		/* save SRR0 */			\
-	ori	r12,r12,(label)@l;	/* virt addr of handler */	\
-	ori	r10,r10,MSR_IR|MSR_DR|MSR_RI;				\
-	mtspr	SPRN_SRR0,r12;						\
-	mfspr	r12,SPRN_SRR1;		/* and SRR1 */			\
-	mtspr	SPRN_SRR1,r10;						\
-	rfid;								\
-	b	.	/* prevent speculative execution */
-
-/*
- * This is the start of the interrupt handlers for iSeries
- * This code runs with relocation on.
- */
-#define EXCEPTION_PROLOG_ISERIES_1(area)				\
-	mfspr	r13,SPRN_SPRG3;		/* get paca address into r13 */	\
-	std	r9,area+EX_R9(r13);	/* save r9 - r12 */		\
-	std	r10,area+EX_R10(r13);					\
-	std	r11,area+EX_R11(r13);					\
-	std	r12,area+EX_R12(r13);					\
-	mfspr	r9,SPRN_SPRG1;						\
-	std	r9,area+EX_R13(r13);					\
-	mfcr	r9
-
-#define EXCEPTION_PROLOG_ISERIES_2					\
-	mfmsr	r10;							\
-	ld	r11,PACALPPACA+LPPACASRR0(r13);				\
-	ld	r12,PACALPPACA+LPPACASRR1(r13);				\
-	ori	r10,r10,MSR_RI;						\
-	mtmsrd	r10,1
-
-/*
- * The common exception prolog is used for all except a few exceptions
- * such as a segment miss on a kernel address.  We have to be prepared
- * to take another exception from the point where we first touch the
- * kernel stack onwards.
- *
- * On entry r13 points to the paca, r9-r13 are saved in the paca,
- * r9 contains the saved CR, r11 and r12 contain the saved SRR0 and
- * SRR1, and relocation is on.
- */
-#define EXCEPTION_PROLOG_COMMON(n, area)				   \
-	andi.	r10,r12,MSR_PR;		/* See if coming from user	*/ \
-	mr	r10,r1;			/* Save r1			*/ \
-	subi	r1,r1,INT_FRAME_SIZE;	/* alloc frame on kernel stack	*/ \
-	beq-	1f;							   \
-	ld	r1,PACAKSAVE(r13);	/* kernel stack to use		*/ \
-1:	cmpdi	cr1,r1,0;		/* check if r1 is in userspace	*/ \
-	bge-	cr1,bad_stack;		/* abort if it is		*/ \
-	std	r9,_CCR(r1);		/* save CR in stackframe	*/ \
-	std	r11,_NIP(r1);		/* save SRR0 in stackframe	*/ \
-	std	r12,_MSR(r1);		/* save SRR1 in stackframe	*/ \
-	std	r10,0(r1);		/* make stack chain pointer	*/ \
-	std	r0,GPR0(r1);		/* save r0 in stackframe	*/ \
-	std	r10,GPR1(r1);		/* save r1 in stackframe	*/ \
-	std	r2,GPR2(r1);		/* save r2 in stackframe	*/ \
-	SAVE_4GPRS(3, r1);		/* save r3 - r6 in stackframe	*/ \
-	SAVE_2GPRS(7, r1);		/* save r7, r8 in stackframe	*/ \
-	ld	r9,area+EX_R9(r13);	/* move r9, r10 to stackframe	*/ \
-	ld	r10,area+EX_R10(r13);					   \
-	std	r9,GPR9(r1);						   \
-	std	r10,GPR10(r1);						   \
-	ld	r9,area+EX_R11(r13);	/* move r11 - r13 to stackframe	*/ \
-	ld	r10,area+EX_R12(r13);					   \
-	ld	r11,area+EX_R13(r13);					   \
-	std	r9,GPR11(r1);						   \
-	std	r10,GPR12(r1);						   \
-	std	r11,GPR13(r1);						   \
-	ld	r2,PACATOC(r13);	/* get kernel TOC into r2	*/ \
-	mflr	r9;			/* save LR in stackframe	*/ \
-	std	r9,_LINK(r1);						   \
-	mfctr	r10;			/* save CTR in stackframe	*/ \
-	std	r10,_CTR(r1);						   \
-	mfspr	r11,SPRN_XER;		/* save XER in stackframe	*/ \
-	std	r11,_XER(r1);						   \
-	li	r9,(n)+1;						   \
-	std	r9,_TRAP(r1);		/* set trap number		*/ \
-	li	r10,0;							   \
-	ld	r11,exception_marker@toc(r2);				   \
-	std	r10,RESULT(r1);		/* clear regs->result		*/ \
-	std	r11,STACK_FRAME_OVERHEAD-16(r1); /* mark the frame	*/
-
-/*
- * Exception vectors.
- */
-#define STD_EXCEPTION_PSERIES(n, label)			\
-	. = n;						\
-	.globl label##_pSeries;				\
-label##_pSeries:					\
-	HMT_MEDIUM;					\
-	mtspr	SPRN_SPRG1,r13;		/* save r13 */	\
-	RUNLATCH_ON(r13);				\
-	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common)
-
-#define STD_EXCEPTION_ISERIES(n, label, area)		\
-	.globl label##_iSeries;				\
-label##_iSeries:					\
-	HMT_MEDIUM;					\
-	mtspr	SPRN_SPRG1,r13;		/* save r13 */	\
-	RUNLATCH_ON(r13);				\
-	EXCEPTION_PROLOG_ISERIES_1(area);		\
-	EXCEPTION_PROLOG_ISERIES_2;			\
-	b	label##_common
-
-#define MASKABLE_EXCEPTION_ISERIES(n, label)				\
-	.globl label##_iSeries;						\
-label##_iSeries:							\
-	HMT_MEDIUM;							\
-	mtspr	SPRN_SPRG1,r13;		/* save r13 */			\
-	RUNLATCH_ON(r13);						\
-	EXCEPTION_PROLOG_ISERIES_1(PACA_EXGEN);				\
-	lbz	r10,PACAPROCENABLED(r13);				\
-	cmpwi	0,r10,0;						\
-	beq-	label##_iSeries_masked;					\
-	EXCEPTION_PROLOG_ISERIES_2;					\
-	b	label##_common;						\
-
-#ifdef DO_SOFT_DISABLE
-#define DISABLE_INTS				\
-	lbz	r10,PACAPROCENABLED(r13);	\
-	li	r11,0;				\
-	std	r10,SOFTE(r1);			\
-	mfmsr	r10;				\
-	stb	r11,PACAPROCENABLED(r13);	\
-	ori	r10,r10,MSR_EE;			\
-	mtmsrd	r10,1
-
-#define ENABLE_INTS				\
-	lbz	r10,PACAPROCENABLED(r13);	\
-	mfmsr	r11;				\
-	std	r10,SOFTE(r1);			\
-	ori	r11,r11,MSR_EE;			\
-	mtmsrd	r11,1
-
-#else	/* hard enable/disable interrupts */
-#define DISABLE_INTS
-
-#define ENABLE_INTS				\
-	ld	r12,_MSR(r1);			\
-	mfmsr	r11;				\
-	rlwimi	r11,r12,0,MSR_EE;		\
-	mtmsrd	r11,1
-
-#endif
-
-#define STD_EXCEPTION_COMMON(trap, label, hdlr)		\
-	.align	7;					\
-	.globl label##_common;				\
-label##_common:						\
-	EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN);	\
-	DISABLE_INTS;					\
-	bl	.save_nvgprs;				\
-	addi	r3,r1,STACK_FRAME_OVERHEAD;		\
-	bl	hdlr;					\
-	b	.ret_from_except
-
-#define STD_EXCEPTION_COMMON_LITE(trap, label, hdlr)	\
-	.align	7;					\
-	.globl label##_common;				\
-label##_common:						\
-	EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN);	\
-	DISABLE_INTS;					\
-	addi	r3,r1,STACK_FRAME_OVERHEAD;		\
-	bl	hdlr;					\
-	b	.ret_from_except_lite
-
-/*
- * Start of pSeries system interrupt routines
- */
-	. = 0x100
-	.globl __start_interrupts
-__start_interrupts:
-
-	STD_EXCEPTION_PSERIES(0x100, system_reset)
-
-	. = 0x200
-_machine_check_pSeries:
-	HMT_MEDIUM
-	mtspr	SPRN_SPRG1,r13		/* save r13 */
-	RUNLATCH_ON(r13)
-	EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common)
-
-	. = 0x300
-	.globl data_access_pSeries
-data_access_pSeries:
-	HMT_MEDIUM
-	mtspr	SPRN_SPRG1,r13
-BEGIN_FTR_SECTION
-	mtspr	SPRN_SPRG2,r12
-	mfspr	r13,SPRN_DAR
-	mfspr	r12,SPRN_DSISR
-	srdi	r13,r13,60
-	rlwimi	r13,r12,16,0x20
-	mfcr	r12
-	cmpwi	r13,0x2c
-	beq	.do_stab_bolted_pSeries
-	mtcrf	0x80,r12
-	mfspr	r12,SPRN_SPRG2
-END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
-	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, data_access_common)
-
-	. = 0x380
-	.globl data_access_slb_pSeries
-data_access_slb_pSeries:
-	HMT_MEDIUM
-	mtspr	SPRN_SPRG1,r13
-	RUNLATCH_ON(r13)
-	mfspr	r13,SPRN_SPRG3		/* get paca address into r13 */
-	std	r3,PACA_EXSLB+EX_R3(r13)
-	mfspr	r3,SPRN_DAR
-	std	r9,PACA_EXSLB+EX_R9(r13)	/* save r9 - r12 */
-	mfcr	r9
-#ifdef __DISABLED__
-	/* Keep that around for when we re-implement dynamic VSIDs */
-	cmpdi	r3,0
-	bge	slb_miss_user_pseries
-#endif /* __DISABLED__ */
-	std	r10,PACA_EXSLB+EX_R10(r13)
-	std	r11,PACA_EXSLB+EX_R11(r13)
-	std	r12,PACA_EXSLB+EX_R12(r13)
-	mfspr	r10,SPRN_SPRG1
-	std	r10,PACA_EXSLB+EX_R13(r13)
-	mfspr	r12,SPRN_SRR1		/* and SRR1 */
-	b	.slb_miss_realmode	/* Rel. branch works in real mode */
-
-	STD_EXCEPTION_PSERIES(0x400, instruction_access)
-
-	. = 0x480
-	.globl instruction_access_slb_pSeries
-instruction_access_slb_pSeries:
-	HMT_MEDIUM
-	mtspr	SPRN_SPRG1,r13
-	RUNLATCH_ON(r13)
-	mfspr	r13,SPRN_SPRG3		/* get paca address into r13 */
-	std	r3,PACA_EXSLB+EX_R3(r13)
-	mfspr	r3,SPRN_SRR0		/* SRR0 is faulting address */
-	std	r9,PACA_EXSLB+EX_R9(r13)	/* save r9 - r12 */
-	mfcr	r9
-#ifdef __DISABLED__
-	/* Keep that around for when we re-implement dynamic VSIDs */
-	cmpdi	r3,0
-	bge	slb_miss_user_pseries
-#endif /* __DISABLED__ */
-	std	r10,PACA_EXSLB+EX_R10(r13)
-	std	r11,PACA_EXSLB+EX_R11(r13)
-	std	r12,PACA_EXSLB+EX_R12(r13)
-	mfspr	r10,SPRN_SPRG1
-	std	r10,PACA_EXSLB+EX_R13(r13)
-	mfspr	r12,SPRN_SRR1		/* and SRR1 */
-	b	.slb_miss_realmode	/* Rel. branch works in real mode */
-
-	STD_EXCEPTION_PSERIES(0x500, hardware_interrupt)
-	STD_EXCEPTION_PSERIES(0x600, alignment)
-	STD_EXCEPTION_PSERIES(0x700, program_check)
-	STD_EXCEPTION_PSERIES(0x800, fp_unavailable)
-	STD_EXCEPTION_PSERIES(0x900, decrementer)
-	STD_EXCEPTION_PSERIES(0xa00, trap_0a)
-	STD_EXCEPTION_PSERIES(0xb00, trap_0b)
-
-	. = 0xc00
-	.globl	system_call_pSeries
-system_call_pSeries:
-	HMT_MEDIUM
-	RUNLATCH_ON(r9)
-	mr	r9,r13
-	mfmsr	r10
-	mfspr	r13,SPRN_SPRG3
-	mfspr	r11,SPRN_SRR0
-	clrrdi	r12,r13,32
-	oris	r12,r12,system_call_common@h
-	ori	r12,r12,system_call_common@l
-	mtspr	SPRN_SRR0,r12
-	ori	r10,r10,MSR_IR|MSR_DR|MSR_RI
-	mfspr	r12,SPRN_SRR1
-	mtspr	SPRN_SRR1,r10
-	rfid
-	b	.	/* prevent speculative execution */
-
-	STD_EXCEPTION_PSERIES(0xd00, single_step)
-	STD_EXCEPTION_PSERIES(0xe00, trap_0e)
-
-	/* We need to deal with the Altivec unavailable exception
-	 * here which is at 0xf20, thus in the middle of the
-	 * prolog code of the PerformanceMonitor one. A little
-	 * trickery is thus necessary
-	 */
-	. = 0xf00
-	b	performance_monitor_pSeries
-
-	STD_EXCEPTION_PSERIES(0xf20, altivec_unavailable)
-
-	STD_EXCEPTION_PSERIES(0x1300, instruction_breakpoint)
-	STD_EXCEPTION_PSERIES(0x1700, altivec_assist)
-
-	. = 0x3000
-
-/*** pSeries interrupt support ***/
-
-	/* moved from 0xf00 */
-	STD_EXCEPTION_PSERIES(., performance_monitor)
-
-	.align	7
-_GLOBAL(do_stab_bolted_pSeries)
-	mtcrf	0x80,r12
-	mfspr	r12,SPRN_SPRG2
-	EXCEPTION_PROLOG_PSERIES(PACA_EXSLB, .do_stab_bolted)
-
-/*
- * We have some room here  we use that to put
- * the peries slb miss user trampoline code so it's reasonably
- * away from slb_miss_user_common to avoid problems with rfid
- *
- * This is used for when the SLB miss handler has to go virtual,
- * which doesn't happen for now anymore but will once we re-implement
- * dynamic VSIDs for shared page tables
- */
-#ifdef __DISABLED__
-slb_miss_user_pseries:
-	std	r10,PACA_EXGEN+EX_R10(r13)
-	std	r11,PACA_EXGEN+EX_R11(r13)
-	std	r12,PACA_EXGEN+EX_R12(r13)
-	mfspr	r10,SPRG1
-	ld	r11,PACA_EXSLB+EX_R9(r13)
-	ld	r12,PACA_EXSLB+EX_R3(r13)
-	std	r10,PACA_EXGEN+EX_R13(r13)
-	std	r11,PACA_EXGEN+EX_R9(r13)
-	std	r12,PACA_EXGEN+EX_R3(r13)
-	clrrdi	r12,r13,32
-	mfmsr	r10
-	mfspr	r11,SRR0			/* save SRR0 */
-	ori	r12,r12,slb_miss_user_common@l	/* virt addr of handler */
-	ori	r10,r10,MSR_IR|MSR_DR|MSR_RI
-	mtspr	SRR0,r12
-	mfspr	r12,SRR1			/* and SRR1 */
-	mtspr	SRR1,r10
-	rfid
-	b	.				/* prevent spec. execution */
-#endif /* __DISABLED__ */
-
-/*
- * Vectors for the FWNMI option.  Share common code.
- */
-	.globl system_reset_fwnmi
-system_reset_fwnmi:
-	HMT_MEDIUM
-	mtspr	SPRN_SPRG1,r13		/* save r13 */
-	RUNLATCH_ON(r13)
-	EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common)
-
-	.globl machine_check_fwnmi
-machine_check_fwnmi:
-	HMT_MEDIUM
-	mtspr	SPRN_SPRG1,r13		/* save r13 */
-	RUNLATCH_ON(r13)
-	EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common)
-
-#ifdef CONFIG_PPC_ISERIES
-/***  ISeries-LPAR interrupt handlers ***/
-
-	STD_EXCEPTION_ISERIES(0x200, machine_check, PACA_EXMC)
-
-	.globl data_access_iSeries
-data_access_iSeries:
-	mtspr	SPRN_SPRG1,r13
-BEGIN_FTR_SECTION
-	mtspr	SPRN_SPRG2,r12
-	mfspr	r13,SPRN_DAR
-	mfspr	r12,SPRN_DSISR
-	srdi	r13,r13,60
-	rlwimi	r13,r12,16,0x20
-	mfcr	r12
-	cmpwi	r13,0x2c
-	beq	.do_stab_bolted_iSeries
-	mtcrf	0x80,r12
-	mfspr	r12,SPRN_SPRG2
-END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
-	EXCEPTION_PROLOG_ISERIES_1(PACA_EXGEN)
-	EXCEPTION_PROLOG_ISERIES_2
-	b	data_access_common
-
-.do_stab_bolted_iSeries:
-	mtcrf	0x80,r12
-	mfspr	r12,SPRN_SPRG2
-	EXCEPTION_PROLOG_ISERIES_1(PACA_EXSLB)
-	EXCEPTION_PROLOG_ISERIES_2
-	b	.do_stab_bolted
-
-	.globl	data_access_slb_iSeries
-data_access_slb_iSeries:
-	mtspr	SPRN_SPRG1,r13		/* save r13 */
-	mfspr	r13,SPRN_SPRG3		/* get paca address into r13 */
-	std	r3,PACA_EXSLB+EX_R3(r13)
-	mfspr	r3,SPRN_DAR
-	std	r9,PACA_EXSLB+EX_R9(r13)
-	mfcr	r9
-#ifdef __DISABLED__
-	cmpdi	r3,0
-	bge	slb_miss_user_iseries
-#endif
-	std	r10,PACA_EXSLB+EX_R10(r13)
-	std	r11,PACA_EXSLB+EX_R11(r13)
-	std	r12,PACA_EXSLB+EX_R12(r13)
-	mfspr	r10,SPRN_SPRG1
-	std	r10,PACA_EXSLB+EX_R13(r13)
-	ld	r12,PACALPPACA+LPPACASRR1(r13);
-	b	.slb_miss_realmode
-
-	STD_EXCEPTION_ISERIES(0x400, instruction_access, PACA_EXGEN)
-
-	.globl	instruction_access_slb_iSeries
-instruction_access_slb_iSeries:
-	mtspr	SPRN_SPRG1,r13		/* save r13 */
-	mfspr	r13,SPRN_SPRG3		/* get paca address into r13 */
-	std	r3,PACA_EXSLB+EX_R3(r13)
-	ld	r3,PACALPPACA+LPPACASRR0(r13)	/* get SRR0 value */
-	std	r9,PACA_EXSLB+EX_R9(r13)
-	mfcr	r9
-#ifdef __DISABLED__
-	cmpdi	r3,0
-	bge	.slb_miss_user_iseries
-#endif
-	std	r10,PACA_EXSLB+EX_R10(r13)
-	std	r11,PACA_EXSLB+EX_R11(r13)
-	std	r12,PACA_EXSLB+EX_R12(r13)
-	mfspr	r10,SPRN_SPRG1
-	std	r10,PACA_EXSLB+EX_R13(r13)
-	ld	r12,PACALPPACA+LPPACASRR1(r13);
-	b	.slb_miss_realmode
-
-#ifdef __DISABLED__
-slb_miss_user_iseries:
-	std	r10,PACA_EXGEN+EX_R10(r13)
-	std	r11,PACA_EXGEN+EX_R11(r13)
-	std	r12,PACA_EXGEN+EX_R12(r13)
-	mfspr	r10,SPRG1
-	ld	r11,PACA_EXSLB+EX_R9(r13)
-	ld	r12,PACA_EXSLB+EX_R3(r13)
-	std	r10,PACA_EXGEN+EX_R13(r13)
-	std	r11,PACA_EXGEN+EX_R9(r13)
-	std	r12,PACA_EXGEN+EX_R3(r13)
-	EXCEPTION_PROLOG_ISERIES_2
-	b	slb_miss_user_common
-#endif
-
-	MASKABLE_EXCEPTION_ISERIES(0x500, hardware_interrupt)
-	STD_EXCEPTION_ISERIES(0x600, alignment, PACA_EXGEN)
-	STD_EXCEPTION_ISERIES(0x700, program_check, PACA_EXGEN)
-	STD_EXCEPTION_ISERIES(0x800, fp_unavailable, PACA_EXGEN)
-	MASKABLE_EXCEPTION_ISERIES(0x900, decrementer)
-	STD_EXCEPTION_ISERIES(0xa00, trap_0a, PACA_EXGEN)
-	STD_EXCEPTION_ISERIES(0xb00, trap_0b, PACA_EXGEN)
-
-	.globl	system_call_iSeries
-system_call_iSeries:
-	mr	r9,r13
-	mfspr	r13,SPRN_SPRG3
-	EXCEPTION_PROLOG_ISERIES_2
-	b	system_call_common
-
-	STD_EXCEPTION_ISERIES( 0xd00, single_step, PACA_EXGEN)
-	STD_EXCEPTION_ISERIES( 0xe00, trap_0e, PACA_EXGEN)
-	STD_EXCEPTION_ISERIES( 0xf00, performance_monitor, PACA_EXGEN)
-
-	.globl system_reset_iSeries
-system_reset_iSeries:
-	mfspr	r13,SPRN_SPRG3		/* Get paca address */
-	mfmsr	r24
-	ori	r24,r24,MSR_RI
-	mtmsrd	r24			/* RI on */
-	lhz	r24,PACAPACAINDEX(r13)	/* Get processor # */
-	cmpwi	0,r24,0			/* Are we processor 0? */
-	beq	.__start_initialization_iSeries	/* Start up the first processor */
-	mfspr	r4,SPRN_CTRLF
-	li	r5,CTRL_RUNLATCH	/* Turn off the run light */
-	andc	r4,r4,r5
-	mtspr	SPRN_CTRLT,r4
-
-1:
-	HMT_LOW
-#ifdef CONFIG_SMP
-	lbz	r23,PACAPROCSTART(r13)	/* Test if this processor
-					 * should start */
-	sync
-	LOADADDR(r3,current_set)
-	sldi	r28,r24,3		/* get current_set[cpu#] */
-	ldx	r3,r3,r28
-	addi	r1,r3,THREAD_SIZE
-	subi	r1,r1,STACK_FRAME_OVERHEAD
-
-	cmpwi	0,r23,0
-	beq	iSeries_secondary_smp_loop	/* Loop until told to go */
-	bne	.__secondary_start		/* Loop until told to go */
-iSeries_secondary_smp_loop:
-	/* Let the Hypervisor know we are alive */
-	/* 8002 is a call to HvCallCfg::getLps, a harmless Hypervisor function */
-	lis	r3,0x8002
-	rldicr	r3,r3,32,15		/* r0 = (r3 << 32) & 0xffff000000000000 */
-#else /* CONFIG_SMP */
-	/* Yield the processor.  This is required for non-SMP kernels
-		which are running on multi-threaded machines. */
-	lis	r3,0x8000
-	rldicr	r3,r3,32,15		/* r3 = (r3 << 32) & 0xffff000000000000 */
-	addi	r3,r3,18		/* r3 = 0x8000000000000012 which is "yield" */
-	li	r4,0			/* "yield timed" */
-	li	r5,-1			/* "yield forever" */
-#endif /* CONFIG_SMP */
-	li	r0,-1			/* r0=-1 indicates a Hypervisor call */
-	sc				/* Invoke the hypervisor via a system call */
-	mfspr	r13,SPRN_SPRG3		/* Put r13 back ???? */
-	b	1b			/* If SMP not configured, secondaries
-					 * loop forever */
-
-	.globl decrementer_iSeries_masked
-decrementer_iSeries_masked:
-	li	r11,1
-	stb	r11,PACALPPACA+LPPACADECRINT(r13)
-	lwz	r12,PACADEFAULTDECR(r13)
-	mtspr	SPRN_DEC,r12
-	/* fall through */
-
-	.globl hardware_interrupt_iSeries_masked
-hardware_interrupt_iSeries_masked:
-	mtcrf	0x80,r9		/* Restore regs */
-	ld	r11,PACALPPACA+LPPACASRR0(r13)
-	ld	r12,PACALPPACA+LPPACASRR1(r13)
-	mtspr	SPRN_SRR0,r11
-	mtspr	SPRN_SRR1,r12
-	ld	r9,PACA_EXGEN+EX_R9(r13)
-	ld	r10,PACA_EXGEN+EX_R10(r13)
-	ld	r11,PACA_EXGEN+EX_R11(r13)
-	ld	r12,PACA_EXGEN+EX_R12(r13)
-	ld	r13,PACA_EXGEN+EX_R13(r13)
-	rfid
-	b	.	/* prevent speculative execution */
-#endif /* CONFIG_PPC_ISERIES */
-
-/*** Common interrupt handlers ***/
-
-	STD_EXCEPTION_COMMON(0x100, system_reset, .system_reset_exception)
-
-	/*
-	 * Machine check is different because we use a different
-	 * save area: PACA_EXMC instead of PACA_EXGEN.
-	 */
-	.align	7
-	.globl machine_check_common
-machine_check_common:
-	EXCEPTION_PROLOG_COMMON(0x200, PACA_EXMC)
-	DISABLE_INTS
-	bl	.save_nvgprs
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	.machine_check_exception
-	b	.ret_from_except
-
-	STD_EXCEPTION_COMMON_LITE(0x900, decrementer, .timer_interrupt)
-	STD_EXCEPTION_COMMON(0xa00, trap_0a, .unknown_exception)
-	STD_EXCEPTION_COMMON(0xb00, trap_0b, .unknown_exception)
-	STD_EXCEPTION_COMMON(0xd00, single_step, .single_step_exception)
-	STD_EXCEPTION_COMMON(0xe00, trap_0e, .unknown_exception)
-	STD_EXCEPTION_COMMON(0xf00, performance_monitor, .performance_monitor_exception)
-	STD_EXCEPTION_COMMON(0x1300, instruction_breakpoint, .instruction_breakpoint_exception)
-#ifdef CONFIG_ALTIVEC
-	STD_EXCEPTION_COMMON(0x1700, altivec_assist, .altivec_assist_exception)
-#else
-	STD_EXCEPTION_COMMON(0x1700, altivec_assist, .unknown_exception)
-#endif
-
-/*
- * Here we have detected that the kernel stack pointer is bad.
- * R9 contains the saved CR, r13 points to the paca,
- * r10 contains the (bad) kernel stack pointer,
- * r11 and r12 contain the saved SRR0 and SRR1.
- * We switch to using an emergency stack, save the registers there,
- * and call kernel_bad_stack(), which panics.
- */
-bad_stack:
-	ld	r1,PACAEMERGSP(r13)
-	subi	r1,r1,64+INT_FRAME_SIZE
-	std	r9,_CCR(r1)
-	std	r10,GPR1(r1)
-	std	r11,_NIP(r1)
-	std	r12,_MSR(r1)
-	mfspr	r11,SPRN_DAR
-	mfspr	r12,SPRN_DSISR
-	std	r11,_DAR(r1)
-	std	r12,_DSISR(r1)
-	mflr	r10
-	mfctr	r11
-	mfxer	r12
-	std	r10,_LINK(r1)
-	std	r11,_CTR(r1)
-	std	r12,_XER(r1)
-	SAVE_GPR(0,r1)
-	SAVE_GPR(2,r1)
-	SAVE_4GPRS(3,r1)
-	SAVE_2GPRS(7,r1)
-	SAVE_10GPRS(12,r1)
-	SAVE_10GPRS(22,r1)
-	addi	r11,r1,INT_FRAME_SIZE
-	std	r11,0(r1)
-	li	r12,0
-	std	r12,0(r11)
-	ld	r2,PACATOC(r13)
-1:	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	.kernel_bad_stack
-	b	1b
-
-/*
- * Return from an exception with minimal checks.
- * The caller is assumed to have done EXCEPTION_PROLOG_COMMON.
- * If interrupts have been enabled, or anything has been
- * done that might have changed the scheduling status of
- * any task or sent any task a signal, you should use
- * ret_from_except or ret_from_except_lite instead of this.
- */
-	.globl	fast_exception_return
-fast_exception_return:
-	ld	r12,_MSR(r1)
-	ld	r11,_NIP(r1)
-	andi.	r3,r12,MSR_RI		/* check if RI is set */
-	beq-	unrecov_fer
-	ld	r3,_CCR(r1)
-	ld	r4,_LINK(r1)
-	ld	r5,_CTR(r1)
-	ld	r6,_XER(r1)
-	mtcr	r3
-	mtlr	r4
-	mtctr	r5
-	mtxer	r6
-	REST_GPR(0, r1)
-	REST_8GPRS(2, r1)
-
-	mfmsr	r10
-	clrrdi	r10,r10,2		/* clear RI (LE is 0 already) */
-	mtmsrd	r10,1
-
-	mtspr	SPRN_SRR1,r12
-	mtspr	SPRN_SRR0,r11
-	REST_4GPRS(10, r1)
-	ld	r1,GPR1(r1)
-	rfid
-	b	.	/* prevent speculative execution */
-
-unrecov_fer:
-	bl	.save_nvgprs
-1:	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	.unrecoverable_exception
-	b	1b
-
-/*
- * Here r13 points to the paca, r9 contains the saved CR,
- * SRR0 and SRR1 are saved in r11 and r12,
- * r9 - r13 are saved in paca->exgen.
- */
-	.align	7
-	.globl data_access_common
-data_access_common:
-	RUNLATCH_ON(r10)		/* It wont fit in the 0x300 handler */
-	mfspr	r10,SPRN_DAR
-	std	r10,PACA_EXGEN+EX_DAR(r13)
-	mfspr	r10,SPRN_DSISR
-	stw	r10,PACA_EXGEN+EX_DSISR(r13)
-	EXCEPTION_PROLOG_COMMON(0x300, PACA_EXGEN)
-	ld	r3,PACA_EXGEN+EX_DAR(r13)
-	lwz	r4,PACA_EXGEN+EX_DSISR(r13)
-	li	r5,0x300
-	b	.do_hash_page	 	/* Try to handle as hpte fault */
-
-	.align	7
-	.globl instruction_access_common
-instruction_access_common:
-	EXCEPTION_PROLOG_COMMON(0x400, PACA_EXGEN)
-	ld	r3,_NIP(r1)
-	andis.	r4,r12,0x5820
-	li	r5,0x400
-	b	.do_hash_page		/* Try to handle as hpte fault */
-
-/*
- * Here is the common SLB miss user that is used when going to virtual
- * mode for SLB misses, that is currently not used
- */
-#ifdef __DISABLED__
-	.align	7
-	.globl	slb_miss_user_common
-slb_miss_user_common:
-	mflr	r10
-	std	r3,PACA_EXGEN+EX_DAR(r13)
-	stw	r9,PACA_EXGEN+EX_CCR(r13)
-	std	r10,PACA_EXGEN+EX_LR(r13)
-	std	r11,PACA_EXGEN+EX_SRR0(r13)
-	bl	.slb_allocate_user
-
-	ld	r10,PACA_EXGEN+EX_LR(r13)
-	ld	r3,PACA_EXGEN+EX_R3(r13)
-	lwz	r9,PACA_EXGEN+EX_CCR(r13)
-	ld	r11,PACA_EXGEN+EX_SRR0(r13)
-	mtlr	r10
-	beq-	slb_miss_fault
-
-	andi.	r10,r12,MSR_RI		/* check for unrecoverable exception */
-	beq-	unrecov_user_slb
-	mfmsr	r10
-
-.machine push
-.machine "power4"
-	mtcrf	0x80,r9
-.machine pop
-
-	clrrdi	r10,r10,2		/* clear RI before setting SRR0/1 */
-	mtmsrd	r10,1
-
-	mtspr	SRR0,r11
-	mtspr	SRR1,r12
-
-	ld	r9,PACA_EXGEN+EX_R9(r13)
-	ld	r10,PACA_EXGEN+EX_R10(r13)
-	ld	r11,PACA_EXGEN+EX_R11(r13)
-	ld	r12,PACA_EXGEN+EX_R12(r13)
-	ld	r13,PACA_EXGEN+EX_R13(r13)
-	rfid
-	b	.
-
-slb_miss_fault:
-	EXCEPTION_PROLOG_COMMON(0x380, PACA_EXGEN)
-	ld	r4,PACA_EXGEN+EX_DAR(r13)
-	li	r5,0
-	std	r4,_DAR(r1)
-	std	r5,_DSISR(r1)
-	b	.handle_page_fault
-
-unrecov_user_slb:
-	EXCEPTION_PROLOG_COMMON(0x4200, PACA_EXGEN)
-	DISABLE_INTS
-	bl	.save_nvgprs
-1:	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	.unrecoverable_exception
-	b	1b
-
-#endif /* __DISABLED__ */
-
-
-/*
- * r13 points to the PACA, r9 contains the saved CR,
- * r12 contain the saved SRR1, SRR0 is still ready for return
- * r3 has the faulting address
- * r9 - r13 are saved in paca->exslb.
- * r3 is saved in paca->slb_r3
- * We assume we aren't going to take any exceptions during this procedure.
- */
-_GLOBAL(slb_miss_realmode)
-	mflr	r10
-
-	stw	r9,PACA_EXSLB+EX_CCR(r13)	/* save CR in exc. frame */
-	std	r10,PACA_EXSLB+EX_LR(r13)	/* save LR */
-
-	bl	.slb_allocate_realmode
-
-	/* All done -- return from exception. */
-
-	ld	r10,PACA_EXSLB+EX_LR(r13)
-	ld	r3,PACA_EXSLB+EX_R3(r13)
-	lwz	r9,PACA_EXSLB+EX_CCR(r13)	/* get saved CR */
-#ifdef CONFIG_PPC_ISERIES
-	ld	r11,PACALPPACA+LPPACASRR0(r13)	/* get SRR0 value */
-#endif /* CONFIG_PPC_ISERIES */
-
-	mtlr	r10
-
-	andi.	r10,r12,MSR_RI	/* check for unrecoverable exception */
-	beq-	unrecov_slb
-
-.machine	push
-.machine	"power4"
-	mtcrf	0x80,r9
-	mtcrf	0x01,r9		/* slb_allocate uses cr0 and cr7 */
-.machine	pop
-
-#ifdef CONFIG_PPC_ISERIES
-	mtspr	SPRN_SRR0,r11
-	mtspr	SPRN_SRR1,r12
-#endif /* CONFIG_PPC_ISERIES */
-	ld	r9,PACA_EXSLB+EX_R9(r13)
-	ld	r10,PACA_EXSLB+EX_R10(r13)
-	ld	r11,PACA_EXSLB+EX_R11(r13)
-	ld	r12,PACA_EXSLB+EX_R12(r13)
-	ld	r13,PACA_EXSLB+EX_R13(r13)
-	rfid
-	b	.	/* prevent speculative execution */
-
-unrecov_slb:
-	EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB)
-	DISABLE_INTS
-	bl	.save_nvgprs
-1:	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	.unrecoverable_exception
-	b	1b
-
-	.align	7
-	.globl hardware_interrupt_common
-	.globl hardware_interrupt_entry
-hardware_interrupt_common:
-	EXCEPTION_PROLOG_COMMON(0x500, PACA_EXGEN)
-hardware_interrupt_entry:
-	DISABLE_INTS
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	.do_IRQ
-	b	.ret_from_except_lite
-
-	.align	7
-	.globl alignment_common
-alignment_common:
-	mfspr	r10,SPRN_DAR
-	std	r10,PACA_EXGEN+EX_DAR(r13)
-	mfspr	r10,SPRN_DSISR
-	stw	r10,PACA_EXGEN+EX_DSISR(r13)
-	EXCEPTION_PROLOG_COMMON(0x600, PACA_EXGEN)
-	ld	r3,PACA_EXGEN+EX_DAR(r13)
-	lwz	r4,PACA_EXGEN+EX_DSISR(r13)
-	std	r3,_DAR(r1)
-	std	r4,_DSISR(r1)
-	bl	.save_nvgprs
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	ENABLE_INTS
-	bl	.alignment_exception
-	b	.ret_from_except
-
-	.align	7
-	.globl program_check_common
-program_check_common:
-	EXCEPTION_PROLOG_COMMON(0x700, PACA_EXGEN)
-	bl	.save_nvgprs
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	ENABLE_INTS
-	bl	.program_check_exception
-	b	.ret_from_except
-
-	.align	7
-	.globl fp_unavailable_common
-fp_unavailable_common:
-	EXCEPTION_PROLOG_COMMON(0x800, PACA_EXGEN)
-	bne	.load_up_fpu		/* if from user, just load it up */
-	bl	.save_nvgprs
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	ENABLE_INTS
-	bl	.kernel_fp_unavailable_exception
-	BUG_OPCODE
-
-	.align	7
-	.globl altivec_unavailable_common
-altivec_unavailable_common:
-	EXCEPTION_PROLOG_COMMON(0xf20, PACA_EXGEN)
-#ifdef CONFIG_ALTIVEC
-BEGIN_FTR_SECTION
-	bne	.load_up_altivec	/* if from user, just load it up */
-END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
-#endif
-	bl	.save_nvgprs
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	ENABLE_INTS
-	bl	.altivec_unavailable_exception
-	b	.ret_from_except
-
-#ifdef CONFIG_ALTIVEC
-/*
- * load_up_altivec(unused, unused, tsk)
- * Disable VMX for the task which had it previously,
- * and save its vector registers in its thread_struct.
- * Enables the VMX for use in the kernel on return.
- * On SMP we know the VMX is free, since we give it up every
- * switch (ie, no lazy save of the vector registers).
- * On entry: r13 == 'current' && last_task_used_altivec != 'current'
- */
-_STATIC(load_up_altivec)
-	mfmsr	r5			/* grab the current MSR */
-	oris	r5,r5,MSR_VEC@h
-	mtmsrd	r5			/* enable use of VMX now */
-	isync
-
-/*
- * For SMP, we don't do lazy VMX switching because it just gets too
- * horrendously complex, especially when a task switches from one CPU
- * to another.  Instead we call giveup_altvec in switch_to.
- * VRSAVE isn't dealt with here, that is done in the normal context
- * switch code. Note that we could rely on vrsave value to eventually
- * avoid saving all of the VREGs here...
- */
-#ifndef CONFIG_SMP
-	ld	r3,last_task_used_altivec@got(r2)
-	ld	r4,0(r3)
-	cmpdi	0,r4,0
-	beq	1f
-	/* Save VMX state to last_task_used_altivec's THREAD struct */
-	addi	r4,r4,THREAD
-	SAVE_32VRS(0,r5,r4)
-	mfvscr	vr0
-	li	r10,THREAD_VSCR
-	stvx	vr0,r10,r4
-	/* Disable VMX for last_task_used_altivec */
-	ld	r5,PT_REGS(r4)
-	ld	r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-	lis	r6,MSR_VEC@h
-	andc	r4,r4,r6
-	std	r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-1:
-#endif /* CONFIG_SMP */
-	/* Hack: if we get an altivec unavailable trap with VRSAVE
-	 * set to all zeros, we assume this is a broken application
-	 * that fails to set it properly, and thus we switch it to
-	 * all 1's
-	 */
-	mfspr	r4,SPRN_VRSAVE
-	cmpdi	0,r4,0
-	bne+	1f
-	li	r4,-1
-	mtspr	SPRN_VRSAVE,r4
-1:
-	/* enable use of VMX after return */
-	ld	r4,PACACURRENT(r13)
-	addi	r5,r4,THREAD		/* Get THREAD */
-	oris	r12,r12,MSR_VEC@h
-	std	r12,_MSR(r1)
-	li	r4,1
-	li	r10,THREAD_VSCR
-	stw	r4,THREAD_USED_VR(r5)
-	lvx	vr0,r10,r5
-	mtvscr	vr0
-	REST_32VRS(0,r4,r5)
-#ifndef CONFIG_SMP
-	/* Update last_task_used_math to 'current' */
-	subi	r4,r5,THREAD		/* Back to 'current' */
-	std	r4,0(r3)
-#endif /* CONFIG_SMP */
-	/* restore registers and return */
-	b	fast_exception_return
-#endif /* CONFIG_ALTIVEC */
-
-/*
- * Hash table stuff
- */
-	.align	7
-_GLOBAL(do_hash_page)
-	std	r3,_DAR(r1)
-	std	r4,_DSISR(r1)
-
-	andis.	r0,r4,0xa450		/* weird error? */
-	bne-	.handle_page_fault	/* if not, try to insert a HPTE */
-BEGIN_FTR_SECTION
-	andis.	r0,r4,0x0020		/* Is it a segment table fault? */
-	bne-	.do_ste_alloc		/* If so handle it */
-END_FTR_SECTION_IFCLR(CPU_FTR_SLB)
-
-	/*
-	 * We need to set the _PAGE_USER bit if MSR_PR is set or if we are
-	 * accessing a userspace segment (even from the kernel). We assume
-	 * kernel addresses always have the high bit set.
-	 */
-	rlwinm	r4,r4,32-25+9,31-9,31-9	/* DSISR_STORE -> _PAGE_RW */
-	rotldi	r0,r3,15		/* Move high bit into MSR_PR posn */
-	orc	r0,r12,r0		/* MSR_PR | ~high_bit */
-	rlwimi	r4,r0,32-13,30,30	/* becomes _PAGE_USER access bit */
-	ori	r4,r4,1			/* add _PAGE_PRESENT */
-	rlwimi	r4,r5,22+2,31-2,31-2	/* Set _PAGE_EXEC if trap is 0x400 */
-
-	/*
-	 * On iSeries, we soft-disable interrupts here, then
-	 * hard-enable interrupts so that the hash_page code can spin on
-	 * the hash_table_lock without problems on a shared processor.
-	 */
-	DISABLE_INTS
-
-	/*
-	 * r3 contains the faulting address
-	 * r4 contains the required access permissions
-	 * r5 contains the trap number
-	 *
-	 * at return r3 = 0 for success
-	 */
-	bl	.hash_page		/* build HPTE if possible */
-	cmpdi	r3,0			/* see if hash_page succeeded */
-
-#ifdef DO_SOFT_DISABLE
-	/*
-	 * If we had interrupts soft-enabled at the point where the
-	 * DSI/ISI occurred, and an interrupt came in during hash_page,
-	 * handle it now.
-	 * We jump to ret_from_except_lite rather than fast_exception_return
-	 * because ret_from_except_lite will check for and handle pending
-	 * interrupts if necessary.
-	 */
-	beq	.ret_from_except_lite
-	/* For a hash failure, we don't bother re-enabling interrupts */
-	ble-	12f
-
-	/*
-	 * hash_page couldn't handle it, set soft interrupt enable back
-	 * to what it was before the trap.  Note that .local_irq_restore
-	 * handles any interrupts pending at this point.
-	 */
-	ld	r3,SOFTE(r1)
-	bl	.local_irq_restore
-	b	11f
-#else
-	beq	fast_exception_return   /* Return from exception on success */
-	ble-	12f			/* Failure return from hash_page */
-
-	/* fall through */
-#endif
-
-/* Here we have a page fault that hash_page can't handle. */
-_GLOBAL(handle_page_fault)
-	ENABLE_INTS
-11:	ld	r4,_DAR(r1)
-	ld	r5,_DSISR(r1)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	bl	.do_page_fault
-	cmpdi	r3,0
-	beq+	.ret_from_except_lite
-	bl	.save_nvgprs
-	mr	r5,r3
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	lwz	r4,_DAR(r1)
-	bl	.bad_page_fault
-	b	.ret_from_except
-
-/* We have a page fault that hash_page could handle but HV refused
- * the PTE insertion
- */
-12:	bl	.save_nvgprs
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	lwz	r4,_DAR(r1)
-	bl	.low_hash_fault
-	b	.ret_from_except
-
-	/* here we have a segment miss */
-_GLOBAL(do_ste_alloc)
-	bl	.ste_allocate		/* try to insert stab entry */
-	cmpdi	r3,0
-	beq+	fast_exception_return
-	b	.handle_page_fault
-
-/*
- * r13 points to the PACA, r9 contains the saved CR,
- * r11 and r12 contain the saved SRR0 and SRR1.
- * r9 - r13 are saved in paca->exslb.
- * We assume we aren't going to take any exceptions during this procedure.
- * We assume (DAR >> 60) == 0xc.
- */
-	.align	7
-_GLOBAL(do_stab_bolted)
-	stw	r9,PACA_EXSLB+EX_CCR(r13)	/* save CR in exc. frame */
-	std	r11,PACA_EXSLB+EX_SRR0(r13)	/* save SRR0 in exc. frame */
-
-	/* Hash to the primary group */
-	ld	r10,PACASTABVIRT(r13)
-	mfspr	r11,SPRN_DAR
-	srdi	r11,r11,28
-	rldimi	r10,r11,7,52	/* r10 = first ste of the group */
-
-	/* Calculate VSID */
-	/* This is a kernel address, so protovsid = ESID */
-	ASM_VSID_SCRAMBLE(r11, r9)
-	rldic	r9,r11,12,16	/* r9 = vsid << 12 */
-
-	/* Search the primary group for a free entry */
-1:	ld	r11,0(r10)	/* Test valid bit of the current ste	*/
-	andi.	r11,r11,0x80
-	beq	2f
-	addi	r10,r10,16
-	andi.	r11,r10,0x70
-	bne	1b
-
-	/* Stick for only searching the primary group for now.		*/
-	/* At least for now, we use a very simple random castout scheme */
-	/* Use the TB as a random number ;  OR in 1 to avoid entry 0	*/
-	mftb	r11
-	rldic	r11,r11,4,57	/* r11 = (r11 << 4) & 0x70 */
-	ori	r11,r11,0x10
-
-	/* r10 currently points to an ste one past the group of interest */
-	/* make it point to the randomly selected entry			*/
-	subi	r10,r10,128
-	or 	r10,r10,r11	/* r10 is the entry to invalidate	*/
-
-	isync			/* mark the entry invalid		*/
-	ld	r11,0(r10)
-	rldicl	r11,r11,56,1	/* clear the valid bit */
-	rotldi	r11,r11,8
-	std	r11,0(r10)
-	sync
-
-	clrrdi	r11,r11,28	/* Get the esid part of the ste		*/
-	slbie	r11
-
-2:	std	r9,8(r10)	/* Store the vsid part of the ste	*/
-	eieio
-
-	mfspr	r11,SPRN_DAR		/* Get the new esid			*/
-	clrrdi	r11,r11,28	/* Permits a full 32b of ESID		*/
-	ori	r11,r11,0x90	/* Turn on valid and kp			*/
-	std	r11,0(r10)	/* Put new entry back into the stab	*/
-
-	sync
-
-	/* All done -- return from exception. */
-	lwz	r9,PACA_EXSLB+EX_CCR(r13)	/* get saved CR */
-	ld	r11,PACA_EXSLB+EX_SRR0(r13)	/* get saved SRR0 */
-
-	andi.	r10,r12,MSR_RI
-	beq-	unrecov_slb
-
-	mtcrf	0x80,r9			/* restore CR */
-
-	mfmsr	r10
-	clrrdi	r10,r10,2
-	mtmsrd	r10,1
-
-	mtspr	SPRN_SRR0,r11
-	mtspr	SPRN_SRR1,r12
-	ld	r9,PACA_EXSLB+EX_R9(r13)
-	ld	r10,PACA_EXSLB+EX_R10(r13)
-	ld	r11,PACA_EXSLB+EX_R11(r13)
-	ld	r12,PACA_EXSLB+EX_R12(r13)
-	ld	r13,PACA_EXSLB+EX_R13(r13)
-	rfid
-	b	.	/* prevent speculative execution */
-
-/*
- * Space for CPU0's segment table.
- *
- * On iSeries, the hypervisor must fill in at least one entry before
- * we get control (with relocate on).  The address is give to the hv
- * as a page number (see xLparMap in lpardata.c), so this must be at a
- * fixed address (the linker can't compute (u64)&initial_stab >>
- * PAGE_SHIFT).
- */
-	. = STAB0_PHYS_ADDR	/* 0x6000 */
-	.globl initial_stab
-initial_stab:
-	.space	4096
-
-/*
- * Data area reserved for FWNMI option.
- * This address (0x7000) is fixed by the RPA.
- */
-	.= 0x7000
-	.globl fwnmi_data_area
-fwnmi_data_area:
-
-	/* iSeries does not use the FWNMI stuff, so it is safe to put
-	 * this here, even if we later allow kernels that will boot on
-	 * both pSeries and iSeries */
-#ifdef CONFIG_PPC_ISERIES
-        . = LPARMAP_PHYS
-#include "lparmap.s"
-/*
- * This ".text" is here for old compilers that generate a trailing
- * .note section when compiling .c files to .s
- */
-	.text
-#endif /* CONFIG_PPC_ISERIES */
-
-        . = 0x8000
-
-/*
- * On pSeries, secondary processors spin in the following code.
- * At entry, r3 = this processor's number (physical cpu id)
- */
-_GLOBAL(pSeries_secondary_smp_init)
-	mr	r24,r3
-	
-	/* turn on 64-bit mode */
-	bl	.enable_64b_mode
-	isync
-
-	/* Copy some CPU settings from CPU 0 */
-	bl	.__restore_cpu_setup
-
-	/* Set up a paca value for this processor. Since we have the
-	 * physical cpu id in r24, we need to search the pacas to find
-	 * which logical id maps to our physical one.
-	 */
-	LOADADDR(r13, paca) 		/* Get base vaddr of paca array	 */
-	li	r5,0			/* logical cpu id                */
-1:	lhz	r6,PACAHWCPUID(r13)	/* Load HW procid from paca      */
-	cmpw	r6,r24			/* Compare to our id             */
-	beq	2f
-	addi	r13,r13,PACA_SIZE	/* Loop to next PACA on miss     */
-	addi	r5,r5,1
-	cmpwi	r5,NR_CPUS
-	blt	1b
-
-	mr	r3,r24			/* not found, copy phys to r3	 */
-	b	.kexec_wait		/* next kernel might do better	 */
-
-2:	mtspr	SPRN_SPRG3,r13		/* Save vaddr of paca in SPRG3	 */
-	/* From now on, r24 is expected to be logical cpuid */
-	mr	r24,r5
-3:	HMT_LOW
-	lbz	r23,PACAPROCSTART(r13)	/* Test if this processor should */
-					/* start.			 */
-	sync
-
-	/* Create a temp kernel stack for use before relocation is on.	*/
-	ld	r1,PACAEMERGSP(r13)
-	subi	r1,r1,STACK_FRAME_OVERHEAD
-
-	cmpwi	0,r23,0
-#ifdef CONFIG_SMP
-	bne	.__secondary_start
-#endif
-	b 	3b			/* Loop until told to go	 */
-
-#ifdef CONFIG_PPC_ISERIES
-_STATIC(__start_initialization_iSeries)
-	/* Clear out the BSS */
-	LOADADDR(r11,__bss_stop)
-	LOADADDR(r8,__bss_start)
-	sub	r11,r11,r8		/* bss size			*/
-	addi	r11,r11,7		/* round up to an even double word */
-	rldicl. r11,r11,61,3		/* shift right by 3		*/
-	beq	4f
-	addi	r8,r8,-8
-	li	r0,0
-	mtctr	r11			/* zero this many doublewords	*/
-3:	stdu	r0,8(r8)
-	bdnz	3b
-4:
-	LOADADDR(r1,init_thread_union)
-	addi	r1,r1,THREAD_SIZE
-	li	r0,0
-	stdu	r0,-STACK_FRAME_OVERHEAD(r1)
-
-	LOADADDR(r3,cpu_specs)
-	LOADADDR(r4,cur_cpu_spec)
-	li	r5,0
-	bl	.identify_cpu
-
-	LOADADDR(r2,__toc_start)
-	addi	r2,r2,0x4000
-	addi	r2,r2,0x4000
-
-	bl	.iSeries_early_setup
-	bl	.early_setup
-
-	/* relocation is on at this point */
-
-	b	.start_here_common
-#endif /* CONFIG_PPC_ISERIES */
-
-#ifdef CONFIG_PPC_MULTIPLATFORM
-
-_STATIC(__mmu_off)
-	mfmsr	r3
-	andi.	r0,r3,MSR_IR|MSR_DR
-	beqlr
-	andc	r3,r3,r0
-	mtspr	SPRN_SRR0,r4
-	mtspr	SPRN_SRR1,r3
-	sync
-	rfid
-	b	.	/* prevent speculative execution */
-
-
-/*
- * Here is our main kernel entry point. We support currently 2 kind of entries
- * depending on the value of r5.
- *
- *   r5 != NULL -> OF entry, we go to prom_init, "legacy" parameter content
- *                 in r3...r7
- *   
- *   r5 == NULL -> kexec style entry. r3 is a physical pointer to the
- *                 DT block, r4 is a physical pointer to the kernel itself
- *
- */
-_GLOBAL(__start_initialization_multiplatform)
-	/*
-	 * Are we booted from a PROM Of-type client-interface ?
-	 */
-	cmpldi	cr0,r5,0
-	bne	.__boot_from_prom		/* yes -> prom */
-
-	/* Save parameters */
-	mr	r31,r3
-	mr	r30,r4
-
-	/* Make sure we are running in 64 bits mode */
-	bl	.enable_64b_mode
-
-	/* Setup some critical 970 SPRs before switching MMU off */
-	bl	.__970_cpu_preinit
-
-	/* cpu # */
-	li	r24,0
-
-	/* Switch off MMU if not already */
-	LOADADDR(r4, .__after_prom_start - KERNELBASE)
-	add	r4,r4,r30
-	bl	.__mmu_off
-	b	.__after_prom_start
-
-_STATIC(__boot_from_prom)
-	/* Save parameters */
-	mr	r31,r3
-	mr	r30,r4
-	mr	r29,r5
-	mr	r28,r6
-	mr	r27,r7
-
-	/* Make sure we are running in 64 bits mode */
-	bl	.enable_64b_mode
-
-	/* put a relocation offset into r3 */
-	bl	.reloc_offset
-
-	LOADADDR(r2,__toc_start)
-	addi	r2,r2,0x4000
-	addi	r2,r2,0x4000
-
-	/* Relocate the TOC from a virt addr to a real addr */
-	sub	r2,r2,r3
-
-	/* Restore parameters */
-	mr	r3,r31
-	mr	r4,r30
-	mr	r5,r29
-	mr	r6,r28
-	mr	r7,r27
-
-	/* Do all of the interaction with OF client interface */
-	bl	.prom_init
-	/* We never return */
-	trap
-
-/*
- * At this point, r3 contains the physical address we are running at,
- * returned by prom_init()
- */
-_STATIC(__after_prom_start)
-
-/*
- * We need to run with __start at physical address 0.
- * This will leave some code in the first 256B of
- * real memory, which are reserved for software use.
- * The remainder of the first page is loaded with the fixed
- * interrupt vectors.  The next two pages are filled with
- * unknown exception placeholders.
- *
- * Note: This process overwrites the OF exception vectors.
- *	r26 == relocation offset
- *	r27 == KERNELBASE
- */
-	bl	.reloc_offset
-	mr	r26,r3
-	SET_REG_TO_CONST(r27,KERNELBASE)
-
-	li	r3,0			/* target addr */
-
-	// XXX FIXME: Use phys returned by OF (r30)
-	sub	r4,r27,r26 		/* source addr			 */
-					/* current address of _start	 */
-					/*   i.e. where we are running	 */
-					/*	the source addr		 */
-
-	LOADADDR(r5,copy_to_here)	/* # bytes of memory to copy	 */
-	sub	r5,r5,r27
-
-	li	r6,0x100		/* Start offset, the first 0x100 */
-					/* bytes were copied earlier.	 */
-
-	bl	.copy_and_flush		/* copy the first n bytes	 */
-					/* this includes the code being	 */
-					/* executed here.		 */
-
-	LOADADDR(r0, 4f)		/* Jump to the copy of this code */
-	mtctr	r0			/* that we just made/relocated	 */
-	bctr
-
-4:	LOADADDR(r5,klimit)
-	sub	r5,r5,r26
-	ld	r5,0(r5)		/* get the value of klimit */
-	sub	r5,r5,r27
-	bl	.copy_and_flush		/* copy the rest */
-	b	.start_here_multiplatform
-
-#endif /* CONFIG_PPC_MULTIPLATFORM */
-
-/*
- * Copy routine used to copy the kernel to start at physical address 0
- * and flush and invalidate the caches as needed.
- * r3 = dest addr, r4 = source addr, r5 = copy limit, r6 = start offset
- * on exit, r3, r4, r5 are unchanged, r6 is updated to be >= r5.
- *
- * Note: this routine *only* clobbers r0, r6 and lr
- */
-_GLOBAL(copy_and_flush)
-	addi	r5,r5,-8
-	addi	r6,r6,-8
-4:	li	r0,16			/* Use the least common		*/
-					/* denominator cache line	*/
-					/* size.  This results in	*/
-					/* extra cache line flushes	*/
-					/* but operation is correct.	*/
-					/* Can't get cache line size	*/
-					/* from NACA as it is being	*/
-					/* moved too.			*/
-
-	mtctr	r0			/* put # words/line in ctr	*/
-3:	addi	r6,r6,8			/* copy a cache line		*/
-	ldx	r0,r6,r4
-	stdx	r0,r6,r3
-	bdnz	3b
-	dcbst	r6,r3			/* write it to memory		*/
-	sync
-	icbi	r6,r3			/* flush the icache line	*/
-	cmpld	0,r6,r5
-	blt	4b
-	sync
-	addi	r5,r5,8
-	addi	r6,r6,8
-	blr
-
-.align 8
-copy_to_here:
-
-#ifdef CONFIG_SMP
-#ifdef CONFIG_PPC_PMAC
-/*
- * On PowerMac, secondary processors starts from the reset vector, which
- * is temporarily turned into a call to one of the functions below.
- */
-	.section ".text";
-	.align 2 ;
-
-	.globl	__secondary_start_pmac_0
-__secondary_start_pmac_0:
-	/* NB the entries for cpus 0, 1, 2 must each occupy 8 bytes. */
-	li	r24,0
-	b	1f
-	li	r24,1
-	b	1f
-	li	r24,2
-	b	1f
-	li	r24,3
-1:
-	
-_GLOBAL(pmac_secondary_start)
-	/* turn on 64-bit mode */
-	bl	.enable_64b_mode
-	isync
-
-	/* Copy some CPU settings from CPU 0 */
-	bl	.__restore_cpu_setup
-
-	/* pSeries do that early though I don't think we really need it */
-	mfmsr	r3
-	ori	r3,r3,MSR_RI
-	mtmsrd	r3			/* RI on */
-
-	/* Set up a paca value for this processor. */
-	LOADADDR(r4, paca) 		 /* Get base vaddr of paca array	*/
-	mulli	r13,r24,PACA_SIZE	 /* Calculate vaddr of right paca */
-	add	r13,r13,r4		/* for this processor.		*/
-	mtspr	SPRN_SPRG3,r13		 /* Save vaddr of paca in SPRG3	*/
-
-	/* Create a temp kernel stack for use before relocation is on.	*/
-	ld	r1,PACAEMERGSP(r13)
-	subi	r1,r1,STACK_FRAME_OVERHEAD
-
-	b	.__secondary_start
-
-#endif /* CONFIG_PPC_PMAC */
-
-/*
- * This function is called after the master CPU has released the
- * secondary processors.  The execution environment is relocation off.
- * The paca for this processor has the following fields initialized at
- * this point:
- *   1. Processor number
- *   2. Segment table pointer (virtual address)
- * On entry the following are set:
- *   r1	= stack pointer.  vaddr for iSeries, raddr (temp stack) for pSeries
- *   r24   = cpu# (in Linux terms)
- *   r13   = paca virtual address
- *   SPRG3 = paca virtual address
- */
-_GLOBAL(__secondary_start)
-
-	HMT_MEDIUM			/* Set thread priority to MEDIUM */
-
-	ld	r2,PACATOC(r13)
-
-	/* Do early setup for that CPU */
-	bl	.early_setup_secondary
-
-	/* Initialize the kernel stack.  Just a repeat for iSeries.	 */
-	LOADADDR(r3,current_set)
-	sldi	r28,r24,3		/* get current_set[cpu#]	 */
-	ldx	r1,r3,r28
-	addi	r1,r1,THREAD_SIZE-STACK_FRAME_OVERHEAD
-	std	r1,PACAKSAVE(r13)
-
-	li	r7,0
-	mtlr	r7
-
-	/* enable MMU and jump to start_secondary */
-	LOADADDR(r3,.start_secondary_prolog)
-	SET_REG_TO_CONST(r4, MSR_KERNEL)
-#ifdef DO_SOFT_DISABLE
-	ori	r4,r4,MSR_EE
-#endif
-	mtspr	SPRN_SRR0,r3
-	mtspr	SPRN_SRR1,r4
-	rfid
-	b	.	/* prevent speculative execution */
-
-/* 
- * Running with relocation on at this point.  All we want to do is
- * zero the stack back-chain pointer before going into C code.
- */
-_GLOBAL(start_secondary_prolog)
-	li	r3,0
-	std	r3,0(r1)		/* Zero the stack frame pointer	*/
-	bl	.start_secondary
-#endif
-
-/*
- * This subroutine clobbers r11 and r12
- */
-_GLOBAL(enable_64b_mode)
-	mfmsr	r11			/* grab the current MSR */
-	li	r12,1
-	rldicr	r12,r12,MSR_SF_LG,(63-MSR_SF_LG)
-	or	r11,r11,r12
-	li	r12,1
-	rldicr	r12,r12,MSR_ISF_LG,(63-MSR_ISF_LG)
-	or	r11,r11,r12
-	mtmsrd	r11
-	isync
-	blr
-
-#ifdef CONFIG_PPC_MULTIPLATFORM
-/*
- * This is where the main kernel code starts.
- */
-_STATIC(start_here_multiplatform)
-	/* get a new offset, now that the kernel has moved. */
-	bl	.reloc_offset
-	mr	r26,r3
-
-	/* Clear out the BSS. It may have been done in prom_init,
-	 * already but that's irrelevant since prom_init will soon
-	 * be detached from the kernel completely. Besides, we need
-	 * to clear it now for kexec-style entry.
-	 */
-	LOADADDR(r11,__bss_stop)
-	LOADADDR(r8,__bss_start)
-	sub	r11,r11,r8		/* bss size			*/
-	addi	r11,r11,7		/* round up to an even double word */
-	rldicl. r11,r11,61,3		/* shift right by 3		*/
-	beq	4f
-	addi	r8,r8,-8
-	li	r0,0
-	mtctr	r11			/* zero this many doublewords	*/
-3:	stdu	r0,8(r8)
-	bdnz	3b
-4:
-
-	mfmsr	r6
-	ori	r6,r6,MSR_RI
-	mtmsrd	r6			/* RI on */
-
-#ifdef CONFIG_HMT
-	/* Start up the second thread on cpu 0 */
-	mfspr	r3,SPRN_PVR
-	srwi	r3,r3,16
-	cmpwi	r3,0x34			/* Pulsar  */
-	beq	90f
-	cmpwi	r3,0x36			/* Icestar */
-	beq	90f
-	cmpwi	r3,0x37			/* SStar   */
-	beq	90f
-	b	91f			/* HMT not supported */
-90:	li	r3,0
-	bl	.hmt_start_secondary
-91:
-#endif
-
-	/* The following gets the stack and TOC set up with the regs */
-	/* pointing to the real addr of the kernel stack.  This is   */
-	/* all done to support the C function call below which sets  */
-	/* up the htab.  This is done because we have relocated the  */
-	/* kernel but are still running in real mode. */
-
-	LOADADDR(r3,init_thread_union)
-	sub	r3,r3,r26
-
-	/* set up a stack pointer (physical address) */
-	addi	r1,r3,THREAD_SIZE
-	li	r0,0
-	stdu	r0,-STACK_FRAME_OVERHEAD(r1)
-
-	/* set up the TOC (physical address) */
-	LOADADDR(r2,__toc_start)
-	addi	r2,r2,0x4000
-	addi	r2,r2,0x4000
-	sub	r2,r2,r26
-
-	LOADADDR(r3,cpu_specs)
-	sub	r3,r3,r26
-	LOADADDR(r4,cur_cpu_spec)
-	sub	r4,r4,r26
-	mr	r5,r26
-	bl	.identify_cpu
-
-	/* Save some low level config HIDs of CPU0 to be copied to
-	 * other CPUs later on, or used for suspend/resume
-	 */
-	bl	.__save_cpu_setup
-	sync
-
-	/* Setup a valid physical PACA pointer in SPRG3 for early_setup
-	 * note that boot_cpuid can always be 0 nowadays since there is
-	 * nowhere it can be initialized differently before we reach this
-	 * code
-	 */
-	LOADADDR(r27, boot_cpuid)
-	sub	r27,r27,r26
-	lwz	r27,0(r27)
-
-	LOADADDR(r24, paca) 		/* Get base vaddr of paca array	 */
-	mulli	r13,r27,PACA_SIZE	/* Calculate vaddr of right paca */
-	add	r13,r13,r24		/* for this processor.		 */
-	sub	r13,r13,r26		/* convert to physical addr	 */
-	mtspr	SPRN_SPRG3,r13		/* PPPBBB: Temp... -Peter */
-	
-	/* Do very early kernel initializations, including initial hash table,
-	 * stab and slb setup before we turn on relocation.	*/
-
-	/* Restore parameters passed from prom_init/kexec */
-	mr	r3,r31
- 	bl	.early_setup
-
-	LOADADDR(r3,.start_here_common)
-	SET_REG_TO_CONST(r4, MSR_KERNEL)
-	mtspr	SPRN_SRR0,r3
-	mtspr	SPRN_SRR1,r4
-	rfid
-	b	.	/* prevent speculative execution */
-#endif /* CONFIG_PPC_MULTIPLATFORM */
-	
-	/* This is where all platforms converge execution */
-_STATIC(start_here_common)
-	/* relocation is on at this point */
-
-	/* The following code sets up the SP and TOC now that we are */
-	/* running with translation enabled. */
-
-	LOADADDR(r3,init_thread_union)
-
-	/* set up the stack */
-	addi	r1,r3,THREAD_SIZE
-	li	r0,0
-	stdu	r0,-STACK_FRAME_OVERHEAD(r1)
-
-	/* Apply the CPUs-specific fixups (nop out sections not relevant
-	 * to this CPU
-	 */
-	li	r3,0
-	bl	.do_cpu_ftr_fixups
-
-	LOADADDR(r26, boot_cpuid)
-	lwz	r26,0(r26)
-
-	LOADADDR(r24, paca) 		/* Get base vaddr of paca array  */
-	mulli	r13,r26,PACA_SIZE	/* Calculate vaddr of right paca */
-	add	r13,r13,r24		/* for this processor.		 */
-	mtspr	SPRN_SPRG3,r13
-
-	/* ptr to current */
-	LOADADDR(r4,init_task)
-	std	r4,PACACURRENT(r13)
-
-	/* Load the TOC */
-	ld	r2,PACATOC(r13)
-	std	r1,PACAKSAVE(r13)
-
-	bl	.setup_system
-
-	/* Load up the kernel context */
-5:
-#ifdef DO_SOFT_DISABLE
-	li	r5,0
-	stb	r5,PACAPROCENABLED(r13)	/* Soft Disabled */
-	mfmsr	r5
-	ori	r5,r5,MSR_EE		/* Hard Enabled */
-	mtmsrd	r5
-#endif
-
-	bl .start_kernel
-
-_GLOBAL(hmt_init)
-#ifdef CONFIG_HMT
-	LOADADDR(r5, hmt_thread_data)
-	mfspr	r7,SPRN_PVR
-	srwi	r7,r7,16
-	cmpwi	r7,0x34			/* Pulsar  */
-	beq	90f
-	cmpwi	r7,0x36			/* Icestar */
-	beq	91f
-	cmpwi	r7,0x37			/* SStar   */
-	beq	91f
-	b	101f
-90:	mfspr	r6,SPRN_PIR
-	andi.	r6,r6,0x1f
-	b	92f
-91:	mfspr	r6,SPRN_PIR
-	andi.	r6,r6,0x3ff
-92:	sldi	r4,r24,3
-	stwx	r6,r5,r4
-	bl	.hmt_start_secondary
-	b	101f
-
-__hmt_secondary_hold:
-	LOADADDR(r5, hmt_thread_data)
-	clrldi	r5,r5,4
-	li	r7,0
-	mfspr	r6,SPRN_PIR
-	mfspr	r8,SPRN_PVR
-	srwi	r8,r8,16
-	cmpwi	r8,0x34
-	bne	93f
-	andi.	r6,r6,0x1f
-	b	103f
-93:	andi.	r6,r6,0x3f
-
-103:	lwzx	r8,r5,r7
-	cmpw	r8,r6
-	beq	104f
-	addi	r7,r7,8
-	b	103b
-
-104:	addi	r7,r7,4
-	lwzx	r9,r5,r7
-	mr	r24,r9
-101:
-#endif
-	mr	r3,r24
-	b	.pSeries_secondary_smp_init
-
-#ifdef CONFIG_HMT
-_GLOBAL(hmt_start_secondary)
-	LOADADDR(r4,__hmt_secondary_hold)
-	clrldi	r4,r4,4
-	mtspr	SPRN_NIADORM, r4
-	mfspr	r4, SPRN_MSRDORM
-	li	r5, -65
-	and	r4, r4, r5
-	mtspr	SPRN_MSRDORM, r4
-	lis	r4,0xffef
-	ori	r4,r4,0x7403
-	mtspr	SPRN_TSC, r4
-	li	r4,0x1f4
-	mtspr	SPRN_TST, r4
-	mfspr	r4, SPRN_HID0
-	ori	r4, r4, 0x1
-	mtspr	SPRN_HID0, r4
-	mfspr	r4, SPRN_CTRLF
-	oris	r4, r4, 0x40
-	mtspr	SPRN_CTRLT, r4
-	blr
-#endif
-
-/*
- * We put a few things here that have to be page-aligned.
- * This stuff goes at the beginning of the bss, which is page-aligned.
- */
-	.section ".bss"
-
-	.align	PAGE_SHIFT
-
-	.globl	empty_zero_page
-empty_zero_page:
-	.space	PAGE_SIZE
-
-	.globl	swapper_pg_dir
-swapper_pg_dir:
-	.space	PAGE_SIZE
-
-/*
- * This space gets a copy of optional info passed to us by the bootstrap
- * Used to pass parameters into the kernel like root=/dev/sda1, etc.
- */
-	.globl	cmd_line
-cmd_line:
-	.space	COMMAND_LINE_SIZE

arch/ppc64/kernel/misc.S

@@ -1,940 +0,0 @@
-/*
- *  arch/ppc/kernel/misc.S
- *
- *  
- *
- * This file contains miscellaneous low-level functions.
- *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
- * and Paul Mackerras.
- * Adapted for iSeries by Mike Corrigan (mikejc@us.ibm.com)
- * PPC64 updates by Dave Engebretsen (engebret@us.ibm.com) 
- * 
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <linux/config.h>
-#include <linux/sys.h>
-#include <asm/unistd.h>
-#include <asm/errno.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/cache.h>
-#include <asm/ppc_asm.h>
-#include <asm/asm-offsets.h>
-#include <asm/cputable.h>
-#include <asm/thread_info.h>
-
-	.text
-
-/*
- * Returns (address we were linked at) - (address we are running at)
- * for use before the text and data are mapped to KERNELBASE.
- */
-
-_GLOBAL(reloc_offset)
-	mflr	r0
-	bl	1f
-1:	mflr	r3
-	LOADADDR(r4,1b)
-	sub	r3,r4,r3
-	mtlr	r0
-	blr
-
-_GLOBAL(get_msr)
-	mfmsr	r3
-	blr
-
-_GLOBAL(get_dar)
-	mfdar	r3
-	blr
-
-_GLOBAL(get_srr0)
-	mfsrr0  r3
-	blr
-
-_GLOBAL(get_srr1)
-	mfsrr1  r3
-	blr
-	
-_GLOBAL(get_sp)
-	mr	r3,r1
-	blr
-
-#ifdef CONFIG_IRQSTACKS
-_GLOBAL(call_do_softirq)
-	mflr	r0
-	std	r0,16(r1)
-	stdu	r1,THREAD_SIZE-112(r3)
-	mr	r1,r3
-	bl	.__do_softirq
-	ld	r1,0(r1)
-	ld	r0,16(r1)
-	mtlr	r0
-	blr
-
-_GLOBAL(call___do_IRQ)
-	mflr	r0
-	std	r0,16(r1)
-	stdu	r1,THREAD_SIZE-112(r5)
-	mr	r1,r5
-	bl	.__do_IRQ
-	ld	r1,0(r1)
-	ld	r0,16(r1)
-	mtlr	r0
-	blr
-#endif /* CONFIG_IRQSTACKS */
-
-	/*
- * To be called by C code which needs to do some operations with MMU
- * disabled. Note that interrupts have to be disabled by the caller
- * prior to calling us. The code called _MUST_ be in the RMO of course
- * and part of the linear mapping as we don't attempt to translate the
- * stack pointer at all. The function is called with the stack switched
- * to this CPU emergency stack
- *
- * prototype is void *call_with_mmu_off(void *func, void *data);
- *
- * the called function is expected to be of the form
- *
- * void *called(void *data); 
- */
-_GLOBAL(call_with_mmu_off)
-	mflr	r0			/* get link, save it on stackframe */
-	std	r0,16(r1)
-	mr	r1,r5			/* save old stack ptr */
-	ld	r1,PACAEMERGSP(r13)	/* get emerg. stack */
-	subi	r1,r1,STACK_FRAME_OVERHEAD
-	std	r0,16(r1)		/* save link on emerg. stack */
-	std	r5,0(r1)		/* save old stack ptr in backchain */
-	ld	r3,0(r3)		/* get to real function ptr (assume same TOC) */
-	bl	2f			/* we need LR to return, continue at label 2 */
-
-	ld	r0,16(r1)		/* we return here from the call, get LR and */
-	ld	r1,0(r1)		/* .. old stack ptr */
-	mtspr	SPRN_SRR0,r0		/* and get back to virtual mode with these */
-	mfmsr	r4
-	ori	r4,r4,MSR_IR|MSR_DR
-	mtspr	SPRN_SRR1,r4
-	rfid
-
-2:	mtspr	SPRN_SRR0,r3		/* coming from above, enter real mode */
-	mr	r3,r4			/* get parameter */
-	mfmsr	r0
-	ori	r0,r0,MSR_IR|MSR_DR
-	xori	r0,r0,MSR_IR|MSR_DR
-	mtspr	SPRN_SRR1,r0
-	rfid
-
-
-	.section	".toc","aw"
-PPC64_CACHES:
-	.tc		ppc64_caches[TC],ppc64_caches
-	.section	".text"
-
-/*
- * Write any modified data cache blocks out to memory
- * and invalidate the corresponding instruction cache blocks.
- *
- * flush_icache_range(unsigned long start, unsigned long stop)
- *
- *   flush all bytes from start through stop-1 inclusive
- */
-
-_KPROBE(__flush_icache_range)
-
-/*
- * Flush the data cache to memory 
- * 
- * Different systems have different cache line sizes
- * and in some cases i-cache and d-cache line sizes differ from
- * each other.
- */
- 	ld	r10,PPC64_CACHES@toc(r2)
-	lwz	r7,DCACHEL1LINESIZE(r10)/* Get cache line size */
-	addi	r5,r7,-1
-	andc	r6,r3,r5		/* round low to line bdy */
-	subf	r8,r6,r4		/* compute length */
-	add	r8,r8,r5		/* ensure we get enough */
-	lwz	r9,DCACHEL1LOGLINESIZE(r10)	/* Get log-2 of cache line size */
-	srw.	r8,r8,r9		/* compute line count */
-	beqlr				/* nothing to do? */
-	mtctr	r8
-1:	dcbst	0,r6
-	add	r6,r6,r7
-	bdnz	1b
-	sync
-
-/* Now invalidate the instruction cache */
-	
-	lwz	r7,ICACHEL1LINESIZE(r10)	/* Get Icache line size */
-	addi	r5,r7,-1
-	andc	r6,r3,r5		/* round low to line bdy */
-	subf	r8,r6,r4		/* compute length */
-	add	r8,r8,r5
-	lwz	r9,ICACHEL1LOGLINESIZE(r10)	/* Get log-2 of Icache line size */
-	srw.	r8,r8,r9		/* compute line count */
-	beqlr				/* nothing to do? */
-	mtctr	r8
-2:	icbi	0,r6
-	add	r6,r6,r7
-	bdnz	2b
-	isync
-	blr
-
-	.text
-/*
- * Like above, but only do the D-cache.
- *
- * flush_dcache_range(unsigned long start, unsigned long stop)
- *
- *    flush all bytes from start to stop-1 inclusive
- */
-_GLOBAL(flush_dcache_range)
-
-/*
- * Flush the data cache to memory 
- * 
- * Different systems have different cache line sizes
- */
- 	ld	r10,PPC64_CACHES@toc(r2)
-	lwz	r7,DCACHEL1LINESIZE(r10)	/* Get dcache line size */
-	addi	r5,r7,-1
-	andc	r6,r3,r5		/* round low to line bdy */
-	subf	r8,r6,r4		/* compute length */
-	add	r8,r8,r5		/* ensure we get enough */
-	lwz	r9,DCACHEL1LOGLINESIZE(r10)	/* Get log-2 of dcache line size */
-	srw.	r8,r8,r9		/* compute line count */
-	beqlr				/* nothing to do? */
-	mtctr	r8
-0:	dcbst	0,r6
-	add	r6,r6,r7
-	bdnz	0b
-	sync
-	blr
-
-/*
- * Like above, but works on non-mapped physical addresses.
- * Use only for non-LPAR setups ! It also assumes real mode
- * is cacheable. Used for flushing out the DART before using
- * it as uncacheable memory 
- *
- * flush_dcache_phys_range(unsigned long start, unsigned long stop)
- *
- *    flush all bytes from start to stop-1 inclusive
- */
-_GLOBAL(flush_dcache_phys_range)
- 	ld	r10,PPC64_CACHES@toc(r2)
-	lwz	r7,DCACHEL1LINESIZE(r10)	/* Get dcache line size */
-	addi	r5,r7,-1
-	andc	r6,r3,r5		/* round low to line bdy */
-	subf	r8,r6,r4		/* compute length */
-	add	r8,r8,r5		/* ensure we get enough */
-	lwz	r9,DCACHEL1LOGLINESIZE(r10)	/* Get log-2 of dcache line size */
-	srw.	r8,r8,r9		/* compute line count */
-	beqlr				/* nothing to do? */
-	mfmsr	r5			/* Disable MMU Data Relocation */
-	ori	r0,r5,MSR_DR
-	xori	r0,r0,MSR_DR
-	sync
-	mtmsr	r0
-	sync
-	isync
-	mtctr	r8
-0:	dcbst	0,r6
-	add	r6,r6,r7
-	bdnz	0b
-	sync
-	isync
-	mtmsr	r5			/* Re-enable MMU Data Relocation */
-	sync
-	isync
-	blr
-
-_GLOBAL(flush_inval_dcache_range)
- 	ld	r10,PPC64_CACHES@toc(r2)
-	lwz	r7,DCACHEL1LINESIZE(r10)	/* Get dcache line size */
-	addi	r5,r7,-1
-	andc	r6,r3,r5		/* round low to line bdy */
-	subf	r8,r6,r4		/* compute length */
-	add	r8,r8,r5		/* ensure we get enough */
-	lwz	r9,DCACHEL1LOGLINESIZE(r10)/* Get log-2 of dcache line size */
-	srw.	r8,r8,r9		/* compute line count */
-	beqlr				/* nothing to do? */
-	sync
-	isync
-	mtctr	r8
-0:	dcbf	0,r6
-	add	r6,r6,r7
-	bdnz	0b
-	sync
-	isync
-	blr
-
-
-/*
- * Flush a particular page from the data cache to RAM.
- * Note: this is necessary because the instruction cache does *not*
- * snoop from the data cache.
- *
- *	void __flush_dcache_icache(void *page)
- */
-_GLOBAL(__flush_dcache_icache)
-/*
- * Flush the data cache to memory 
- * 
- * Different systems have different cache line sizes
- */
-
-/* Flush the dcache */
- 	ld	r7,PPC64_CACHES@toc(r2)
-	clrrdi	r3,r3,PAGE_SHIFT           	    /* Page align */
-	lwz	r4,DCACHEL1LINESPERPAGE(r7)	/* Get # dcache lines per page */
-	lwz	r5,DCACHEL1LINESIZE(r7)		/* Get dcache line size */
-	mr	r6,r3
-	mtctr	r4
-0:	dcbst	0,r6
-	add	r6,r6,r5
-	bdnz	0b
-	sync
-
-/* Now invalidate the icache */	
-
-	lwz	r4,ICACHEL1LINESPERPAGE(r7)	/* Get # icache lines per page */
-	lwz	r5,ICACHEL1LINESIZE(r7)		/* Get icache line size */
-	mtctr	r4
-1:	icbi	0,r3
-	add	r3,r3,r5
-	bdnz	1b
-	isync
-	blr
-	
-/*
- * I/O string operations
- *
- * insb(port, buf, len)
- * outsb(port, buf, len)
- * insw(port, buf, len)
- * outsw(port, buf, len)
- * insl(port, buf, len)
- * outsl(port, buf, len)
- * insw_ns(port, buf, len)
- * outsw_ns(port, buf, len)
- * insl_ns(port, buf, len)
- * outsl_ns(port, buf, len)
- *
- * The *_ns versions don't do byte-swapping.
- */
-_GLOBAL(_insb)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,1
-	blelr-
-00:	lbz	r5,0(r3)
-	eieio
-	stbu	r5,1(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-_GLOBAL(_outsb)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,1
-	blelr-
-00:	lbzu	r5,1(r4)
-	stb	r5,0(r3)
-	bdnz	00b
-	sync
-	blr	
-
-_GLOBAL(_insw)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-00:	lhbrx	r5,0,r3
-	eieio
-	sthu	r5,2(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-_GLOBAL(_outsw)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-00:	lhzu	r5,2(r4)
-	sthbrx	r5,0,r3	
-	bdnz	00b
-	sync
-	blr	
-
-_GLOBAL(_insl)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-00:	lwbrx	r5,0,r3
-	eieio
-	stwu	r5,4(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-_GLOBAL(_outsl)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-00:	lwzu	r5,4(r4)
-	stwbrx	r5,0,r3
-	bdnz	00b
-	sync
-	blr	
-
-/* _GLOBAL(ide_insw) now in drivers/ide/ide-iops.c */
-_GLOBAL(_insw_ns)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-00:	lhz	r5,0(r3)
-	eieio
-	sthu	r5,2(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-/* _GLOBAL(ide_outsw) now in drivers/ide/ide-iops.c */
-_GLOBAL(_outsw_ns)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,2
-	blelr-
-00:	lhzu	r5,2(r4)
-	sth	r5,0(r3)
-	bdnz	00b
-	sync
-	blr	
-
-_GLOBAL(_insl_ns)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-00:	lwz	r5,0(r3)
-	eieio
-	stwu	r5,4(r4)
-	bdnz	00b
-	twi	0,r5,0
-	isync
-	blr
-
-_GLOBAL(_outsl_ns)
-	cmpwi	0,r5,0
-	mtctr	r5
-	subi	r4,r4,4
-	blelr-
-00:	lwzu	r5,4(r4)
-	stw	r5,0(r3)
-	bdnz	00b
-	sync
-	blr	
-
-/*
- * identify_cpu and calls setup_cpu
- * In:	r3 = base of the cpu_specs array
- *	r4 = address of cur_cpu_spec
- *	r5 = relocation offset
- */
-_GLOBAL(identify_cpu)
-	mfpvr	r7
-1:
-	lwz	r8,CPU_SPEC_PVR_MASK(r3)
-	and	r8,r8,r7
-	lwz	r9,CPU_SPEC_PVR_VALUE(r3)
-	cmplw	0,r9,r8
-	beq	1f
-	addi	r3,r3,CPU_SPEC_ENTRY_SIZE
-	b	1b
-1:
-	add	r0,r3,r5
-	std	r0,0(r4)
-	ld	r4,CPU_SPEC_SETUP(r3)
-	sub	r4,r4,r5
-	ld	r4,0(r4)
-	sub	r4,r4,r5
-	mtctr	r4
-	/* Calling convention for cpu setup is r3=offset, r4=cur_cpu_spec */
-	mr	r4,r3
-	mr	r3,r5
-	bctr
-
-/*
- * do_cpu_ftr_fixups - goes through the list of CPU feature fixups
- * and writes nop's over sections of code that don't apply for this cpu.
- * r3 = data offset (not changed)
- */
-_GLOBAL(do_cpu_ftr_fixups)
-	/* Get CPU 0 features */
-	LOADADDR(r6,cur_cpu_spec)
-	sub	r6,r6,r3
-	ld	r4,0(r6)
-	sub	r4,r4,r3
-	ld	r4,CPU_SPEC_FEATURES(r4)
-	/* Get the fixup table */
-	LOADADDR(r6,__start___ftr_fixup)
-	sub	r6,r6,r3
-	LOADADDR(r7,__stop___ftr_fixup)
-	sub	r7,r7,r3
-	/* Do the fixup */
-1:	cmpld	r6,r7
-	bgelr
-	addi	r6,r6,32
-	ld	r8,-32(r6)	/* mask */
-	and	r8,r8,r4
-	ld	r9,-24(r6)	/* value */
-	cmpld	r8,r9
-	beq	1b
-	ld	r8,-16(r6)	/* section begin */
-	ld	r9,-8(r6)	/* section end */
-	subf.	r9,r8,r9
-	beq	1b
-	/* write nops over the section of code */
-	/* todo: if large section, add a branch at the start of it */
-	srwi	r9,r9,2
-	mtctr	r9
-	sub	r8,r8,r3
-	lis	r0,0x60000000@h	/* nop */
-3:	stw	r0,0(r8)
-	andi.	r10,r4,CPU_FTR_SPLIT_ID_CACHE@l
-	beq	2f
-	dcbst	0,r8		/* suboptimal, but simpler */
-	sync
-	icbi	0,r8
-2:	addi	r8,r8,4
-	bdnz	3b
-	sync			/* additional sync needed on g4 */
-	isync
-	b	1b
-
-#if defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE)
-/*
- * Do an IO access in real mode
- */
-_GLOBAL(real_readb)
-	mfmsr	r7
-	ori	r0,r7,MSR_DR
-	xori	r0,r0,MSR_DR
-	sync
-	mtmsrd	r0
-	sync
-	isync
-	mfspr	r6,SPRN_HID4
-	rldicl	r5,r6,32,0
-	ori	r5,r5,0x100
-	rldicl	r5,r5,32,0
-	sync
-	mtspr	SPRN_HID4,r5
-	isync
-	slbia
-	isync
-	lbz	r3,0(r3)
-	sync
-	mtspr	SPRN_HID4,r6
-	isync
-	slbia
-	isync
-	mtmsrd	r7
-	sync
-	isync
-	blr
-
-/*
- * Do an IO access in real mode
- */
-_GLOBAL(real_writeb)
-	mfmsr	r7
-	ori	r0,r7,MSR_DR
-	xori	r0,r0,MSR_DR
-	sync
-	mtmsrd	r0
-	sync
-	isync
-	mfspr	r6,SPRN_HID4
-	rldicl	r5,r6,32,0
-	ori	r5,r5,0x100
-	rldicl	r5,r5,32,0
-	sync
-	mtspr	SPRN_HID4,r5
-	isync
-	slbia
-	isync
-	stb	r3,0(r4)
-	sync
-	mtspr	SPRN_HID4,r6
-	isync
-	slbia
-	isync
-	mtmsrd	r7
-	sync
-	isync
-	blr
-#endif /* defined(CONFIG_PPC_PMAC) || defined(CONFIG_PPC_MAPLE) */
-
-/*
- * SCOM access functions for 970 (FX only for now)
- *
- * unsigned long scom970_read(unsigned int address);
- * void scom970_write(unsigned int address, unsigned long value);
- *
- * The address passed in is the 24 bits register address. This code
- * is 970 specific and will not check the status bits, so you should
- * know what you are doing.
- */
-_GLOBAL(scom970_read)
-	/* interrupts off */
-	mfmsr	r4
-	ori	r0,r4,MSR_EE
-	xori	r0,r0,MSR_EE
-	mtmsrd	r0,1
-
-	/* rotate 24 bits SCOM address 8 bits left and mask out it's low 8 bits
-	 * (including parity). On current CPUs they must be 0'd,
-	 * and finally or in RW bit
-	 */
-	rlwinm	r3,r3,8,0,15
-	ori	r3,r3,0x8000
-
-	/* do the actual scom read */
-	sync
-	mtspr	SPRN_SCOMC,r3
-	isync
-	mfspr	r3,SPRN_SCOMD
-	isync
-	mfspr	r0,SPRN_SCOMC
-	isync
-
-	/* XXX:	fixup result on some buggy 970's (ouch ! we lost a bit, bah
-	 * that's the best we can do). Not implemented yet as we don't use
-	 * the scom on any of the bogus CPUs yet, but may have to be done
-	 * ultimately
-	 */
-
-	/* restore interrupts */
-	mtmsrd	r4,1
-	blr
-
-
-_GLOBAL(scom970_write)
-	/* interrupts off */
-	mfmsr	r5
-	ori	r0,r5,MSR_EE
-	xori	r0,r0,MSR_EE
-	mtmsrd	r0,1
-
-	/* rotate 24 bits SCOM address 8 bits left and mask out it's low 8 bits
-	 * (including parity). On current CPUs they must be 0'd.
-	 */
-
-	rlwinm	r3,r3,8,0,15
-
-	sync
-	mtspr	SPRN_SCOMD,r4      /* write data */
-	isync
-	mtspr	SPRN_SCOMC,r3      /* write command */
-	isync
-	mfspr	3,SPRN_SCOMC
-	isync
-
-	/* restore interrupts */
-	mtmsrd	r5,1
-	blr
-
-
-/*
- * Create a kernel thread
- *   kernel_thread(fn, arg, flags)
- */
-_GLOBAL(kernel_thread)
-	std	r29,-24(r1)
-	std	r30,-16(r1)
-	stdu	r1,-STACK_FRAME_OVERHEAD(r1)
-	mr	r29,r3
-	mr	r30,r4
-	ori	r3,r5,CLONE_VM	/* flags */
-	oris	r3,r3,(CLONE_UNTRACED>>16)
-	li	r4,0		/* new sp (unused) */
-	li	r0,__NR_clone
-	sc
-	cmpdi	0,r3,0		/* parent or child? */
-	bne	1f		/* return if parent */
-	li	r0,0
-	stdu	r0,-STACK_FRAME_OVERHEAD(r1)
-	ld	r2,8(r29)
-	ld	r29,0(r29)
-	mtlr	r29              /* fn addr in lr */
-	mr	r3,r30	        /* load arg and call fn */
-	blrl
-	li	r0,__NR_exit	/* exit after child exits */
-        li	r3,0
-	sc
-1:	addi	r1,r1,STACK_FRAME_OVERHEAD	
-	ld	r29,-24(r1)
-	ld	r30,-16(r1)
-	blr
-
-/*
- * disable_kernel_fp()
- * Disable the FPU.
- */
-_GLOBAL(disable_kernel_fp)
-	mfmsr	r3
-	rldicl	r0,r3,(63-MSR_FP_LG),1
-	rldicl	r3,r0,(MSR_FP_LG+1),0
-	mtmsrd	r3			/* disable use of fpu now */
-	isync
-	blr
-
-#ifdef CONFIG_ALTIVEC
-
-#if 0 /* this has no callers for now */
-/*
- * disable_kernel_altivec()
- * Disable the VMX.
- */
-_GLOBAL(disable_kernel_altivec)
-	mfmsr	r3
-	rldicl	r0,r3,(63-MSR_VEC_LG),1
-	rldicl	r3,r0,(MSR_VEC_LG+1),0
-	mtmsrd	r3			/* disable use of VMX now */
-	isync
-	blr
-#endif /* 0 */
-
-/*
- * giveup_altivec(tsk)
- * Disable VMX for the task given as the argument,
- * and save the vector registers in its thread_struct.
- * Enables the VMX for use in the kernel on return.
- */
-_GLOBAL(giveup_altivec)
-	mfmsr	r5
-	oris	r5,r5,MSR_VEC@h
-	mtmsrd	r5			/* enable use of VMX now */
-	isync
-	cmpdi	0,r3,0
-	beqlr-				/* if no previous owner, done */
-	addi	r3,r3,THREAD		/* want THREAD of task */
-	ld	r5,PT_REGS(r3)
-	cmpdi	0,r5,0
-	SAVE_32VRS(0,r4,r3)
-	mfvscr	vr0
-	li	r4,THREAD_VSCR
-	stvx	vr0,r4,r3
-	beq	1f
-	ld	r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-	lis	r3,MSR_VEC@h
-	andc	r4,r4,r3		/* disable FP for previous task */
-	std	r4,_MSR-STACK_FRAME_OVERHEAD(r5)
-1:
-#ifndef CONFIG_SMP
-	li	r5,0
-	ld	r4,last_task_used_altivec@got(r2)
-	std	r5,0(r4)
-#endif /* CONFIG_SMP */
-	blr
-
-#endif /* CONFIG_ALTIVEC */
-
-_GLOBAL(__setup_cpu_power3)
-	blr
-
-_GLOBAL(execve)
-	li	r0,__NR_execve
-	sc
-	bnslr
-	neg	r3,r3
-	blr
-
-/* kexec_wait(phys_cpu)
- *
- * wait for the flag to change, indicating this kernel is going away but
- * the slave code for the next one is at addresses 0 to 100.
- *
- * This is used by all slaves.
- *
- * Physical (hardware) cpu id should be in r3.
- */
-_GLOBAL(kexec_wait)
-	bl	1f
-1:	mflr	r5
-	addi	r5,r5,kexec_flag-1b
-
-99:	HMT_LOW
-#ifdef CONFIG_KEXEC		/* use no memory without kexec */
-	lwz	r4,0(r5)
-	cmpwi	0,r4,0
-	bnea	0x60
-#endif
-	b	99b
-
-/* this can be in text because we won't change it until we are
- * running in real anyways
- */
-kexec_flag:
-	.long	0
-
-
-#ifdef CONFIG_KEXEC
-
-/* kexec_smp_wait(void)
- *
- * call with interrupts off
- * note: this is a terminal routine, it does not save lr
- *
- * get phys id from paca
- * set paca id to -1 to say we got here
- * switch to real mode
- * join other cpus in kexec_wait(phys_id)
- */
-_GLOBAL(kexec_smp_wait)
-	lhz	r3,PACAHWCPUID(r13)
-	li	r4,-1
-	sth	r4,PACAHWCPUID(r13)	/* let others know we left */
-	bl	real_mode
-	b	.kexec_wait
-
-/*
- * switch to real mode (turn mmu off)
- * we use the early kernel trick that the hardware ignores bits
- * 0 and 1 (big endian) of the effective address in real mode
- *
- * don't overwrite r3 here, it is live for kexec_wait above.
- */
-real_mode:	/* assume normal blr return */
-1:	li	r9,MSR_RI
-	li	r10,MSR_DR|MSR_IR
-	mflr	r11		/* return address to SRR0 */
-	mfmsr	r12
-	andc	r9,r12,r9
-	andc	r10,r12,r10
-
-	mtmsrd	r9,1
-	mtspr	SPRN_SRR1,r10
-	mtspr	SPRN_SRR0,r11
-	rfid
-
-
-/*
- * kexec_sequence(newstack, start, image, control, clear_all())
- *
- * does the grungy work with stack switching and real mode switches
- * also does simple calls to other code
- */
-
-_GLOBAL(kexec_sequence)
-	mflr	r0
-	std	r0,16(r1)
-
-	/* switch stacks to newstack -- &kexec_stack.stack */
-	stdu	r1,THREAD_SIZE-112(r3)
-	mr	r1,r3
-
-	li	r0,0
-	std	r0,16(r1)
-
-	/* save regs for local vars on new stack.
-	 * yes, we won't go back, but ...
-	 */
-	std	r31,-8(r1)
-	std	r30,-16(r1)
-	std	r29,-24(r1)
-	std	r28,-32(r1)
-	std	r27,-40(r1)
-	std	r26,-48(r1)
-	std	r25,-56(r1)
-
-	stdu	r1,-112-64(r1)
-
-	/* save args into preserved regs */
-	mr	r31,r3			/* newstack (both) */
-	mr	r30,r4			/* start (real) */
-	mr	r29,r5			/* image (virt) */
-	mr	r28,r6			/* control, unused */
-	mr	r27,r7			/* clear_all() fn desc */
-	mr	r26,r8			/* spare */
-	lhz	r25,PACAHWCPUID(r13)	/* get our phys cpu from paca */
-
-	/* disable interrupts, we are overwriting kernel data next */
-	mfmsr	r3
-	rlwinm	r3,r3,0,17,15
-	mtmsrd	r3,1
-
-	/* copy dest pages, flush whole dest image */
-	mr	r3,r29
-	bl	.kexec_copy_flush	/* (image) */
-
-	/* turn off mmu */
-	bl	real_mode
-
-	/* clear out hardware hash page table and tlb */
-	ld	r5,0(r27)		/* deref function descriptor */
-	mtctr	r5
-	bctrl				/* ppc_md.hash_clear_all(void); */
-
-/*
- *   kexec image calling is:
- *      the first 0x100 bytes of the entry point are copied to 0
- *
- *      all slaves branch to slave = 0x60 (absolute)
- *              slave(phys_cpu_id);
- *
- *      master goes to start = entry point
- *              start(phys_cpu_id, start, 0);
- *
- *
- *   a wrapper is needed to call existing kernels, here is an approximate
- *   description of one method:
- *
- * v2: (2.6.10)
- *   start will be near the boot_block (maybe 0x100 bytes before it?)
- *   it will have a 0x60, which will b to boot_block, where it will wait
- *   and 0 will store phys into struct boot-block and load r3 from there,
- *   copy kernel 0-0x100 and tell slaves to back down to 0x60 again
- *
- * v1: (2.6.9)
- *    boot block will have all cpus scanning device tree to see if they
- *    are the boot cpu ?????
- *    other device tree differences (prop sizes, va vs pa, etc)...
- */
-
-	/* copy  0x100 bytes starting at start to 0 */
-	li	r3,0
-	mr	r4,r30
-	li	r5,0x100
-	li	r6,0
-	bl	.copy_and_flush	/* (dest, src, copy limit, start offset) */
-1:	/* assume normal blr return */
-
-	/* release other cpus to the new kernel secondary start at 0x60 */
-	mflr	r5
-	li	r6,1
-	stw	r6,kexec_flag-1b(5)
-	mr	r3,r25	# my phys cpu
-	mr	r4,r30	# start, aka phys mem offset
-	mtlr	4
-	li	r5,0
-	blr	/* image->start(physid, image->start, 0); */
-#endif /* CONFIG_KEXEC */

arch/ppc64/kernel/ppc_ksyms.c

@@ -1,76 +0,0 @@
-/* 
- * c 2001 PPC 64 Team, IBM Corp
- *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- */
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/console.h>
-#include <net/checksum.h>
-
-#include <asm/processor.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/hw_irq.h>
-#include <asm/abs_addr.h>
-#include <asm/cacheflush.h>
-
-EXPORT_SYMBOL(strcpy);
-EXPORT_SYMBOL(strncpy);
-EXPORT_SYMBOL(strcat);
-EXPORT_SYMBOL(strncat);
-EXPORT_SYMBOL(strchr);
-EXPORT_SYMBOL(strrchr);
-EXPORT_SYMBOL(strpbrk);
-EXPORT_SYMBOL(strstr);
-EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(strnlen);
-EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strncmp);
-
-EXPORT_SYMBOL(csum_partial);
-EXPORT_SYMBOL(csum_partial_copy_generic);
-EXPORT_SYMBOL(ip_fast_csum);
-EXPORT_SYMBOL(csum_tcpudp_magic);
-
-EXPORT_SYMBOL(__copy_tofrom_user);
-EXPORT_SYMBOL(__clear_user);
-EXPORT_SYMBOL(__strncpy_from_user);
-EXPORT_SYMBOL(__strnlen_user);
-
-EXPORT_SYMBOL(reloc_offset);
-
-EXPORT_SYMBOL(_insb);
-EXPORT_SYMBOL(_outsb);
-EXPORT_SYMBOL(_insw);
-EXPORT_SYMBOL(_outsw);
-EXPORT_SYMBOL(_insl);
-EXPORT_SYMBOL(_outsl);
-EXPORT_SYMBOL(_insw_ns);
-EXPORT_SYMBOL(_outsw_ns);
-EXPORT_SYMBOL(_insl_ns);
-EXPORT_SYMBOL(_outsl_ns);
-
-EXPORT_SYMBOL(kernel_thread);
-
-EXPORT_SYMBOL(giveup_fpu);
-#ifdef CONFIG_ALTIVEC
-EXPORT_SYMBOL(giveup_altivec);
-#endif
-EXPORT_SYMBOL(__flush_icache_range);
-EXPORT_SYMBOL(flush_dcache_range);
-
-EXPORT_SYMBOL(memcpy);
-EXPORT_SYMBOL(memset);
-EXPORT_SYMBOL(memmove);
-EXPORT_SYMBOL(memscan);
-EXPORT_SYMBOL(memcmp);
-EXPORT_SYMBOL(memchr);
-
-EXPORT_SYMBOL(timer_interrupt);
-EXPORT_SYMBOL(console_drivers);

arch/ppc64/kernel/prom.c

@@ -1,1956 +0,0 @@
-/*
- * 
- *
- * Procedures for interfacing to Open Firmware.
- *
- * Paul Mackerras	August 1996.
- * Copyright (C) 1996 Paul Mackerras.
- * 
- *  Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
- *    {engebret|bergner}@us.ibm.com 
- *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- */
-
-#undef DEBUG
-
-#include <stdarg.h>
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/spinlock.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/stringify.h>
-#include <linux/delay.h>
-#include <linux/initrd.h>
-#include <linux/bitops.h>
-#include <linux/module.h>
-#include <linux/module.h>
-
-#include <asm/prom.h>
-#include <asm/rtas.h>
-#include <asm/lmb.h>
-#include <asm/abs_addr.h>
-#include <asm/page.h>
-#include <asm/processor.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/system.h>
-#include <asm/mmu.h>
-#include <asm/pgtable.h>
-#include <asm/pci.h>
-#include <asm/iommu.h>
-#include <asm/btext.h>
-#include <asm/sections.h>
-#include <asm/machdep.h>
-#include <asm/pSeries_reconfig.h>
-
-#ifdef DEBUG
-#define DBG(fmt...) udbg_printf(fmt)
-#else
-#define DBG(fmt...)
-#endif
-
-struct pci_reg_property {
-	struct pci_address addr;
-	u32 size_hi;
-	u32 size_lo;
-};
-
-struct isa_reg_property {
-	u32 space;
-	u32 address;
-	u32 size;
-};
-
-
-typedef int interpret_func(struct device_node *, unsigned long *,
-			   int, int, int);
-
-extern struct rtas_t rtas;
-extern struct lmb lmb;
-extern unsigned long klimit;
-extern unsigned long memory_limit;
-
-static int __initdata dt_root_addr_cells;
-static int __initdata dt_root_size_cells;
-static int __initdata iommu_is_off;
-int __initdata iommu_force_on;
-unsigned long tce_alloc_start, tce_alloc_end;
-
-typedef u32 cell_t;
-
-#if 0
-static struct boot_param_header *initial_boot_params __initdata;
-#else
-struct boot_param_header *initial_boot_params;
-#endif
-
-static struct device_node *allnodes = NULL;
-
-/* use when traversing tree through the allnext, child, sibling,
- * or parent members of struct device_node.
- */
-static DEFINE_RWLOCK(devtree_lock);
-
-/* export that to outside world */
-struct device_node *of_chosen;
-
-/*
- * Wrapper for allocating memory for various data that needs to be
- * attached to device nodes as they are processed at boot or when
- * added to the device tree later (e.g. DLPAR).  At boot there is
- * already a region reserved so we just increment *mem_start by size;
- * otherwise we call kmalloc.
- */
-static void * prom_alloc(unsigned long size, unsigned long *mem_start)
-{
-	unsigned long tmp;
-
-	if (!mem_start)
-		return kmalloc(size, GFP_KERNEL);
-
-	tmp = *mem_start;
-	*mem_start += size;
-	return (void *)tmp;
-}
-
-/*
- * Find the device_node with a given phandle.
- */
-static struct device_node * find_phandle(phandle ph)
-{
-	struct device_node *np;
-
-	for (np = allnodes; np != 0; np = np->allnext)
-		if (np->linux_phandle == ph)
-			return np;
-	return NULL;
-}
-
-/*
- * Find the interrupt parent of a node.
- */
-static struct device_node * __devinit intr_parent(struct device_node *p)
-{
-	phandle *parp;
-
-	parp = (phandle *) get_property(p, "interrupt-parent", NULL);
-	if (parp == NULL)
-		return p->parent;
-	return find_phandle(*parp);
-}
-
-/*
- * Find out the size of each entry of the interrupts property
- * for a node.
- */
-int __devinit prom_n_intr_cells(struct device_node *np)
-{
-	struct device_node *p;
-	unsigned int *icp;
-
-	for (p = np; (p = intr_parent(p)) != NULL; ) {
-		icp = (unsigned int *)
-			get_property(p, "#interrupt-cells", NULL);
-		if (icp != NULL)
-			return *icp;
-		if (get_property(p, "interrupt-controller", NULL) != NULL
-		    || get_property(p, "interrupt-map", NULL) != NULL) {
-			printk("oops, node %s doesn't have #interrupt-cells\n",
-			       p->full_name);
-			return 1;
-		}
-	}
-#ifdef DEBUG_IRQ
-	printk("prom_n_intr_cells failed for %s\n", np->full_name);
-#endif
-	return 1;
-}
-
-/*
- * Map an interrupt from a device up to the platform interrupt
- * descriptor.
- */
-static int __devinit map_interrupt(unsigned int **irq, struct device_node **ictrler,
-				   struct device_node *np, unsigned int *ints,
-				   int nintrc)
-{
-	struct device_node *p, *ipar;
-	unsigned int *imap, *imask, *ip;
-	int i, imaplen, match;
-	int newintrc = 0, newaddrc = 0;
-	unsigned int *reg;
-	int naddrc;
-
-	reg = (unsigned int *) get_property(np, "reg", NULL);
-	naddrc = prom_n_addr_cells(np);
-	p = intr_parent(np);
-	while (p != NULL) {
-		if (get_property(p, "interrupt-controller", NULL) != NULL)
-			/* this node is an interrupt controller, stop here */
-			break;
-		imap = (unsigned int *)
-			get_property(p, "interrupt-map", &imaplen);
-		if (imap == NULL) {
-			p = intr_parent(p);
-			continue;
-		}
-		imask = (unsigned int *)
-			get_property(p, "interrupt-map-mask", NULL);
-		if (imask == NULL) {
-			printk("oops, %s has interrupt-map but no mask\n",
-			       p->full_name);
-			return 0;
-		}
-		imaplen /= sizeof(unsigned int);
-		match = 0;
-		ipar = NULL;
-		while (imaplen > 0 && !match) {
-			/* check the child-interrupt field */
-			match = 1;
-			for (i = 0; i < naddrc && match; ++i)
-				match = ((reg[i] ^ imap[i]) & imask[i]) == 0;
-			for (; i < naddrc + nintrc && match; ++i)
-				match = ((ints[i-naddrc] ^ imap[i]) & imask[i]) == 0;
-			imap += naddrc + nintrc;
-			imaplen -= naddrc + nintrc;
-			/* grab the interrupt parent */
-			ipar = find_phandle((phandle) *imap++);
-			--imaplen;
-			if (ipar == NULL) {
-				printk("oops, no int parent %x in map of %s\n",
-				       imap[-1], p->full_name);
-				return 0;
-			}
-			/* find the parent's # addr and intr cells */
-			ip = (unsigned int *)
-				get_property(ipar, "#interrupt-cells", NULL);
-			if (ip == NULL) {
-				printk("oops, no #interrupt-cells on %s\n",
-				       ipar->full_name);
-				return 0;
-			}
-			newintrc = *ip;
-			ip = (unsigned int *)
-				get_property(ipar, "#address-cells", NULL);
-			newaddrc = (ip == NULL)? 0: *ip;
-			imap += newaddrc + newintrc;
-			imaplen -= newaddrc + newintrc;
-		}
-		if (imaplen < 0) {
-			printk("oops, error decoding int-map on %s, len=%d\n",
-			       p->full_name, imaplen);
-			return 0;
-		}
-		if (!match) {
-#ifdef DEBUG_IRQ
-			printk("oops, no match in %s int-map for %s\n",
-			       p->full_name, np->full_name);
-#endif
-			return 0;
-		}
-		p = ipar;
-		naddrc = newaddrc;
-		nintrc = newintrc;
-		ints = imap - nintrc;
-		reg = ints - naddrc;
-	}
-	if (p == NULL) {
-#ifdef DEBUG_IRQ
-		printk("hmmm, int tree for %s doesn't have ctrler\n",
-		       np->full_name);
-#endif
-		return 0;
-	}
-	*irq = ints;
-	*ictrler = p;
-	return nintrc;
-}
-
-static int __devinit finish_node_interrupts(struct device_node *np,
-					    unsigned long *mem_start,
-					    int measure_only)
-{
-	unsigned int *ints;
-	int intlen, intrcells, intrcount;
-	int i, j, n;
-	unsigned int *irq, virq;
-	struct device_node *ic;
-
-	ints = (unsigned int *) get_property(np, "interrupts", &intlen);
-	if (ints == NULL)
-		return 0;
-	intrcells = prom_n_intr_cells(np);
-	intlen /= intrcells * sizeof(unsigned int);
-
-	np->intrs = prom_alloc(intlen * sizeof(*(np->intrs)), mem_start);
-	if (!np->intrs)
-		return -ENOMEM;
-
-	if (measure_only)
-		return 0;
-
-	intrcount = 0;
-	for (i = 0; i < intlen; ++i, ints += intrcells) {
-		n = map_interrupt(&irq, &ic, np, ints, intrcells);
-		if (n <= 0)
-			continue;
-
-		/* don't map IRQ numbers under a cascaded 8259 controller */
-		if (ic && device_is_compatible(ic, "chrp,iic")) {
-			np->intrs[intrcount].line = irq[0];
-		} else {
-			virq = virt_irq_create_mapping(irq[0]);
-			if (virq == NO_IRQ) {
-				printk(KERN_CRIT "Could not allocate interrupt"
-				       " number for %s\n", np->full_name);
-				continue;
-			}
-			np->intrs[intrcount].line = irq_offset_up(virq);
-		}
-
-		/* We offset irq numbers for the u3 MPIC by 128 in PowerMac */
-		if (_machine == PLATFORM_POWERMAC && ic && ic->parent) {
-			char *name = get_property(ic->parent, "name", NULL);
-			if (name && !strcmp(name, "u3"))
-				np->intrs[intrcount].line += 128;
-			else if (!(name && !strcmp(name, "mac-io")))
-				/* ignore other cascaded controllers, such as
-				   the k2-sata-root */
-				break;
-		}
-		np->intrs[intrcount].sense = 1;
-		if (n > 1)
-			np->intrs[intrcount].sense = irq[1];
-		if (n > 2) {
-			printk("hmmm, got %d intr cells for %s:", n,
-			       np->full_name);
-			for (j = 0; j < n; ++j)
-				printk(" %d", irq[j]);
-			printk("\n");
-		}
-		++intrcount;
-	}
-	np->n_intrs = intrcount;
-
-	return 0;
-}
-
-static int __devinit interpret_pci_props(struct device_node *np,
-					 unsigned long *mem_start,
-					 int naddrc, int nsizec,
-					 int measure_only)
-{
-	struct address_range *adr;
-	struct pci_reg_property *pci_addrs;
-	int i, l, n_addrs;
-
-	pci_addrs = (struct pci_reg_property *)
-		get_property(np, "assigned-addresses", &l);
-	if (!pci_addrs)
-		return 0;
-
-	n_addrs = l / sizeof(*pci_addrs);
-
-	adr = prom_alloc(n_addrs * sizeof(*adr), mem_start);
-	if (!adr)
-		return -ENOMEM;
-
- 	if (measure_only)
- 		return 0;
-
- 	np->addrs = adr;
- 	np->n_addrs = n_addrs;
-
- 	for (i = 0; i < n_addrs; i++) {
- 		adr[i].space = pci_addrs[i].addr.a_hi;
- 		adr[i].address = pci_addrs[i].addr.a_lo |
-			((u64)pci_addrs[i].addr.a_mid << 32);
- 		adr[i].size = pci_addrs[i].size_lo;
-	}
-
-	return 0;
-}
-
-static int __init interpret_dbdma_props(struct device_node *np,
-					unsigned long *mem_start,
-					int naddrc, int nsizec,
-					int measure_only)
-{
-	struct reg_property32 *rp;
-	struct address_range *adr;
-	unsigned long base_address;
-	int i, l;
-	struct device_node *db;
-
-	base_address = 0;
-	if (!measure_only) {
-		for (db = np->parent; db != NULL; db = db->parent) {
-			if (!strcmp(db->type, "dbdma") && db->n_addrs != 0) {
-				base_address = db->addrs[0].address;
-				break;
-			}
-		}
-	}
-
-	rp = (struct reg_property32 *) get_property(np, "reg", &l);
-	if (rp != 0 && l >= sizeof(struct reg_property32)) {
-		i = 0;
-		adr = (struct address_range *) (*mem_start);
-		while ((l -= sizeof(struct reg_property32)) >= 0) {
-			if (!measure_only) {
-				adr[i].space = 2;
-				adr[i].address = rp[i].address + base_address;
-				adr[i].size = rp[i].size;
-			}
-			++i;
-		}
-		np->addrs = adr;
-		np->n_addrs = i;
-		(*mem_start) += i * sizeof(struct address_range);
-	}
-
-	return 0;
-}
-
-static int __init interpret_macio_props(struct device_node *np,
-					unsigned long *mem_start,
-					int naddrc, int nsizec,
-					int measure_only)
-{
-	struct reg_property32 *rp;
-	struct address_range *adr;
-	unsigned long base_address;
-	int i, l;
-	struct device_node *db;
-
-	base_address = 0;
-	if (!measure_only) {
-		for (db = np->parent; db != NULL; db = db->parent) {
-			if (!strcmp(db->type, "mac-io") && db->n_addrs != 0) {
-				base_address = db->addrs[0].address;
-				break;
-			}
-		}
-	}
-
-	rp = (struct reg_property32 *) get_property(np, "reg", &l);
-	if (rp != 0 && l >= sizeof(struct reg_property32)) {
-		i = 0;
-		adr = (struct address_range *) (*mem_start);
-		while ((l -= sizeof(struct reg_property32)) >= 0) {
-			if (!measure_only) {
-				adr[i].space = 2;
-				adr[i].address = rp[i].address + base_address;
-				adr[i].size = rp[i].size;
-			}
-			++i;
-		}
-		np->addrs = adr;
-		np->n_addrs = i;
-		(*mem_start) += i * sizeof(struct address_range);
-	}
-
-	return 0;
-}
-
-static int __init interpret_isa_props(struct device_node *np,
-				      unsigned long *mem_start,
-				      int naddrc, int nsizec,
-				      int measure_only)
-{
-	struct isa_reg_property *rp;
-	struct address_range *adr;
-	int i, l;
-
-	rp = (struct isa_reg_property *) get_property(np, "reg", &l);
-	if (rp != 0 && l >= sizeof(struct isa_reg_property)) {
-		i = 0;
-		adr = (struct address_range *) (*mem_start);
-		while ((l -= sizeof(struct isa_reg_property)) >= 0) {
-			if (!measure_only) {
-				adr[i].space = rp[i].space;
-				adr[i].address = rp[i].address;
-				adr[i].size = rp[i].size;
-			}
-			++i;
-		}
-		np->addrs = adr;
-		np->n_addrs = i;
-		(*mem_start) += i * sizeof(struct address_range);
-	}
-
-	return 0;
-}
-
-static int __init interpret_root_props(struct device_node *np,
-				       unsigned long *mem_start,
-				       int naddrc, int nsizec,
-				       int measure_only)
-{
-	struct address_range *adr;
-	int i, l;
-	unsigned int *rp;
-	int rpsize = (naddrc + nsizec) * sizeof(unsigned int);
-
-	rp = (unsigned int *) get_property(np, "reg", &l);
-	if (rp != 0 && l >= rpsize) {
-		i = 0;
-		adr = (struct address_range *) (*mem_start);
-		while ((l -= rpsize) >= 0) {
-			if (!measure_only) {
-				adr[i].space = 0;
-				adr[i].address = rp[naddrc - 1];
-				adr[i].size = rp[naddrc + nsizec - 1];
-			}
-			++i;
-			rp += naddrc + nsizec;
-		}
-		np->addrs = adr;
-		np->n_addrs = i;
-		(*mem_start) += i * sizeof(struct address_range);
-	}
-
-	return 0;
-}
-
-static int __devinit finish_node(struct device_node *np,
-				 unsigned long *mem_start,
-				 interpret_func *ifunc,
-				 int naddrc, int nsizec,
-				 int measure_only)
-{
-	struct device_node *child;
-	int *ip, rc = 0;
-
-	/* get the device addresses and interrupts */
-	if (ifunc != NULL)
-		rc = ifunc(np, mem_start, naddrc, nsizec, measure_only);
-	if (rc)
-		goto out;
-
-	rc = finish_node_interrupts(np, mem_start, measure_only);
-	if (rc)
-		goto out;
-
-	/* Look for #address-cells and #size-cells properties. */
-	ip = (int *) get_property(np, "#address-cells", NULL);
-	if (ip != NULL)
-		naddrc = *ip;
-	ip = (int *) get_property(np, "#size-cells", NULL);
-	if (ip != NULL)
-		nsizec = *ip;
-
-	if (!strcmp(np->name, "device-tree") || np->parent == NULL)
-		ifunc = interpret_root_props;
-	else if (np->type == 0)
-		ifunc = NULL;
-	else if (!strcmp(np->type, "pci") || !strcmp(np->type, "vci"))
-		ifunc = interpret_pci_props;
-	else if (!strcmp(np->type, "dbdma"))
-		ifunc = interpret_dbdma_props;
-	else if (!strcmp(np->type, "mac-io") || ifunc == interpret_macio_props)
-		ifunc = interpret_macio_props;
-	else if (!strcmp(np->type, "isa"))
-		ifunc = interpret_isa_props;
-	else if (!strcmp(np->name, "uni-n") || !strcmp(np->name, "u3"))
-		ifunc = interpret_root_props;
-	else if (!((ifunc == interpret_dbdma_props
-		    || ifunc == interpret_macio_props)
-		   && (!strcmp(np->type, "escc")
-		       || !strcmp(np->type, "media-bay"))))
-		ifunc = NULL;
-
-	for (child = np->child; child != NULL; child = child->sibling) {
-		rc = finish_node(child, mem_start, ifunc,
-				 naddrc, nsizec, measure_only);
-		if (rc)
-			goto out;
-	}
-out:
-	return rc;
-}
-
-/**
- * finish_device_tree is called once things are running normally
- * (i.e. with text and data mapped to the address they were linked at).
- * It traverses the device tree and fills in some of the additional,
- * fields in each node like {n_}addrs and {n_}intrs, the virt interrupt
- * mapping is also initialized at this point.
- */
-void __init finish_device_tree(void)
-{
-	unsigned long start, end, size = 0;
-
-	DBG(" -> finish_device_tree\n");
-
-	if (ppc64_interrupt_controller == IC_INVALID) {
-		DBG("failed to configure interrupt controller type\n");
-		panic("failed to configure interrupt controller type\n");
-	}
-	
-	/* Initialize virtual IRQ map */
-	virt_irq_init();
-
-	/*
-	 * Finish device-tree (pre-parsing some properties etc...)
-	 * We do this in 2 passes. One with "measure_only" set, which
-	 * will only measure the amount of memory needed, then we can
-	 * allocate that memory, and call finish_node again. However,
-	 * we must be careful as most routines will fail nowadays when
-	 * prom_alloc() returns 0, so we must make sure our first pass
-	 * doesn't start at 0. We pre-initialize size to 16 for that
-	 * reason and then remove those additional 16 bytes
-	 */
-	size = 16;
-	finish_node(allnodes, &size, NULL, 0, 0, 1);
-	size -= 16;
-	end = start = (unsigned long)abs_to_virt(lmb_alloc(size, 128));
-	finish_node(allnodes, &end, NULL, 0, 0, 0);
-	BUG_ON(end != start + size);
-
-	DBG(" <- finish_device_tree\n");
-}
-
-#ifdef DEBUG
-#define printk udbg_printf
-#endif
-
-static inline char *find_flat_dt_string(u32 offset)
-{
-	return ((char *)initial_boot_params) +
-		initial_boot_params->off_dt_strings + offset;
-}
-
-/**
- * This function is used to scan the flattened device-tree, it is
- * used to extract the memory informations at boot before we can
- * unflatten the tree
- */
-int __init of_scan_flat_dt(int (*it)(unsigned long node,
-				     const char *uname, int depth,
-				     void *data),
-			   void *data)
-{
-	unsigned long p = ((unsigned long)initial_boot_params) +
-		initial_boot_params->off_dt_struct;
-	int rc = 0;
-	int depth = -1;
-
-	do {
-		u32 tag = *((u32 *)p);
-		char *pathp;
-		
-		p += 4;
-		if (tag == OF_DT_END_NODE) {
-			depth --;
-			continue;
-		}
-		if (tag == OF_DT_NOP)
-			continue;
-		if (tag == OF_DT_END)
-			break;
-		if (tag == OF_DT_PROP) {
-			u32 sz = *((u32 *)p);
-			p += 8;
-			if (initial_boot_params->version < 0x10)
-				p = _ALIGN(p, sz >= 8 ? 8 : 4);
-			p += sz;
-			p = _ALIGN(p, 4);
-			continue;
-		}
-		if (tag != OF_DT_BEGIN_NODE) {
-			printk(KERN_WARNING "Invalid tag %x scanning flattened"
-			       " device tree !\n", tag);
-			return -EINVAL;
-		}
-		depth++;
-		pathp = (char *)p;
-		p = _ALIGN(p + strlen(pathp) + 1, 4);
-		if ((*pathp) == '/') {
-			char *lp, *np;
-			for (lp = NULL, np = pathp; *np; np++)
-				if ((*np) == '/')
-					lp = np+1;
-			if (lp != NULL)
-				pathp = lp;
-		}
-		rc = it(p, pathp, depth, data);
-		if (rc != 0)
-			break;		
-	} while(1);
-
-	return rc;
-}
-
-/**
- * This  function can be used within scan_flattened_dt callback to get
- * access to properties
- */
-void* __init of_get_flat_dt_prop(unsigned long node, const char *name,
-				 unsigned long *size)
-{
-	unsigned long p = node;
-
-	do {
-		u32 tag = *((u32 *)p);
-		u32 sz, noff;
-		const char *nstr;
-
-		p += 4;
-		if (tag == OF_DT_NOP)
-			continue;
-		if (tag != OF_DT_PROP)
-			return NULL;
-
-		sz = *((u32 *)p);
-		noff = *((u32 *)(p + 4));
-		p += 8;
-		if (initial_boot_params->version < 0x10)
-			p = _ALIGN(p, sz >= 8 ? 8 : 4);
-
-		nstr = find_flat_dt_string(noff);
-		if (nstr == NULL) {
-			printk(KERN_WARNING "Can't find property index"
-			       " name !\n");
-			return NULL;
-		}
-		if (strcmp(name, nstr) == 0) {
-			if (size)
-				*size = sz;
-			return (void *)p;
-		}
-		p += sz;
-		p = _ALIGN(p, 4);
-	} while(1);
-}
-
-static void *__init unflatten_dt_alloc(unsigned long *mem, unsigned long size,
-				       unsigned long align)
-{
-	void *res;
-
-	*mem = _ALIGN(*mem, align);
-	res = (void *)*mem;
-	*mem += size;
-
-	return res;
-}
-
-static unsigned long __init unflatten_dt_node(unsigned long mem,
-					      unsigned long *p,
-					      struct device_node *dad,
-					      struct device_node ***allnextpp,
-					      unsigned long fpsize)
-{
-	struct device_node *np;
-	struct property *pp, **prev_pp = NULL;
-	char *pathp;
-	u32 tag;
-	unsigned int l, allocl;
-	int has_name = 0;
-	int new_format = 0;
-
-	tag = *((u32 *)(*p));
-	if (tag != OF_DT_BEGIN_NODE) {
-		printk("Weird tag at start of node: %x\n", tag);
-		return mem;
-	}
-	*p += 4;
-	pathp = (char *)*p;
-	l = allocl = strlen(pathp) + 1;
-	*p = _ALIGN(*p + l, 4);
-
-	/* version 0x10 has a more compact unit name here instead of the full
-	 * path. we accumulate the full path size using "fpsize", we'll rebuild
-	 * it later. We detect this because the first character of the name is
-	 * not '/'.
-	 */
-	if ((*pathp) != '/') {
-		new_format = 1;
-		if (fpsize == 0) {
-			/* root node: special case. fpsize accounts for path
-			 * plus terminating zero. root node only has '/', so
-			 * fpsize should be 2, but we want to avoid the first
-			 * level nodes to have two '/' so we use fpsize 1 here
-			 */
-			fpsize = 1;
-			allocl = 2;
-		} else {
-			/* account for '/' and path size minus terminal 0
-			 * already in 'l'
-			 */
-			fpsize += l;
-			allocl = fpsize;
-		}
-	}
-
-
-	np = unflatten_dt_alloc(&mem, sizeof(struct device_node) + allocl,
-				__alignof__(struct device_node));
-	if (allnextpp) {
-		memset(np, 0, sizeof(*np));
-		np->full_name = ((char*)np) + sizeof(struct device_node);
-		if (new_format) {
-			char *p = np->full_name;
-			/* rebuild full path for new format */
-			if (dad && dad->parent) {
-				strcpy(p, dad->full_name);
-#ifdef DEBUG
-				if ((strlen(p) + l + 1) != allocl) {
-					DBG("%s: p: %d, l: %d, a: %d\n",
-					    pathp, strlen(p), l, allocl);
-				}
-#endif
-				p += strlen(p);
-			}
-			*(p++) = '/';
-			memcpy(p, pathp, l);
-		} else
-			memcpy(np->full_name, pathp, l);
-		prev_pp = &np->properties;
-		**allnextpp = np;
-		*allnextpp = &np->allnext;
-		if (dad != NULL) {
-			np->parent = dad;
-			/* we temporarily use the next field as `last_child'*/
-			if (dad->next == 0)
-				dad->child = np;
-			else
-				dad->next->sibling = np;
-			dad->next = np;
-		}
-		kref_init(&np->kref);
-	}
-	while(1) {
-		u32 sz, noff;
-		char *pname;
-
-		tag = *((u32 *)(*p));
-		if (tag == OF_DT_NOP) {
-			*p += 4;
-			continue;
-		}
-		if (tag != OF_DT_PROP)
-			break;
-		*p += 4;
-		sz = *((u32 *)(*p));
-		noff = *((u32 *)((*p) + 4));
-		*p += 8;
-		if (initial_boot_params->version < 0x10)
-			*p = _ALIGN(*p, sz >= 8 ? 8 : 4);
-
-		pname = find_flat_dt_string(noff);
-		if (pname == NULL) {
-			printk("Can't find property name in list !\n");
-			break;
-		}
-		if (strcmp(pname, "name") == 0)
-			has_name = 1;
-		l = strlen(pname) + 1;
-		pp = unflatten_dt_alloc(&mem, sizeof(struct property),
-					__alignof__(struct property));
-		if (allnextpp) {
-			if (strcmp(pname, "linux,phandle") == 0) {
-				np->node = *((u32 *)*p);
-				if (np->linux_phandle == 0)
-					np->linux_phandle = np->node;
-			}
-			if (strcmp(pname, "ibm,phandle") == 0)
-				np->linux_phandle = *((u32 *)*p);
-			pp->name = pname;
-			pp->length = sz;
-			pp->value = (void *)*p;
-			*prev_pp = pp;
-			prev_pp = &pp->next;
-		}
-		*p = _ALIGN((*p) + sz, 4);
-	}
-	/* with version 0x10 we may not have the name property, recreate
-	 * it here from the unit name if absent
-	 */
-	if (!has_name) {
-		char *p = pathp, *ps = pathp, *pa = NULL;
-		int sz;
-
-		while (*p) {
-			if ((*p) == '@')
-				pa = p;
-			if ((*p) == '/')
-				ps = p + 1;
-			p++;
-		}
-		if (pa < ps)
-			pa = p;
-		sz = (pa - ps) + 1;
-		pp = unflatten_dt_alloc(&mem, sizeof(struct property) + sz,
-					__alignof__(struct property));
-		if (allnextpp) {
-			pp->name = "name";
-			pp->length = sz;
-			pp->value = (unsigned char *)(pp + 1);
-			*prev_pp = pp;
-			prev_pp = &pp->next;
-			memcpy(pp->value, ps, sz - 1);
-			((char *)pp->value)[sz - 1] = 0;
-			DBG("fixed up name for %s -> %s\n", pathp, pp->value);
-		}
-	}
-	if (allnextpp) {
-		*prev_pp = NULL;
-		np->name = get_property(np, "name", NULL);
-		np->type = get_property(np, "device_type", NULL);
-
-		if (!np->name)
-			np->name = "<NULL>";
-		if (!np->type)
-			np->type = "<NULL>";
-	}
-	while (tag == OF_DT_BEGIN_NODE) {
-		mem = unflatten_dt_node(mem, p, np, allnextpp, fpsize);
-		tag = *((u32 *)(*p));
-	}
-	if (tag != OF_DT_END_NODE) {
-		printk("Weird tag at end of node: %x\n", tag);
-		return mem;
-	}
-	*p += 4;
-	return mem;
-}
-
-
-/**
- * unflattens the device-tree passed by the firmware, creating the
- * tree of struct device_node. It also fills the "name" and "type"
- * pointers of the nodes so the normal device-tree walking functions
- * can be used (this used to be done by finish_device_tree)
- */
-void __init unflatten_device_tree(void)
-{
-	unsigned long start, mem, size;
-	struct device_node **allnextp = &allnodes;
-	char *p = NULL;
-	int l = 0;
-
-	DBG(" -> unflatten_device_tree()\n");
-
-	/* First pass, scan for size */
-	start = ((unsigned long)initial_boot_params) +
-		initial_boot_params->off_dt_struct;
-	size = unflatten_dt_node(0, &start, NULL, NULL, 0);
-	size = (size | 3) + 1;
-
-	DBG("  size is %lx, allocating...\n", size);
-
-	/* Allocate memory for the expanded device tree */
-	mem = lmb_alloc(size + 4, __alignof__(struct device_node));
-	if (!mem) {
-		DBG("Couldn't allocate memory with lmb_alloc()!\n");
-		panic("Couldn't allocate memory with lmb_alloc()!\n");
-	}
-	mem = (unsigned long)abs_to_virt(mem);
-
-	((u32 *)mem)[size / 4] = 0xdeadbeef;
-
-	DBG("  unflattening...\n", mem);
-
-	/* Second pass, do actual unflattening */
-	start = ((unsigned long)initial_boot_params) +
-		initial_boot_params->off_dt_struct;
-	unflatten_dt_node(mem, &start, NULL, &allnextp, 0);
-	if (*((u32 *)start) != OF_DT_END)
-		printk(KERN_WARNING "Weird tag at end of tree: %08x\n", *((u32 *)start));
-	if (((u32 *)mem)[size / 4] != 0xdeadbeef)
-		printk(KERN_WARNING "End of tree marker overwritten: %08x\n",
-		       ((u32 *)mem)[size / 4] );
-	*allnextp = NULL;
-
-	/* Get pointer to OF "/chosen" node for use everywhere */
-	of_chosen = of_find_node_by_path("/chosen");
-
-	/* Retreive command line */
-	if (of_chosen != NULL) {
-		p = (char *)get_property(of_chosen, "bootargs", &l);
-		if (p != NULL && l > 0)
-			strlcpy(cmd_line, p, min(l, COMMAND_LINE_SIZE));
-	}
-#ifdef CONFIG_CMDLINE
-	if (l == 0 || (l == 1 && (*p) == 0))
-		strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
-#endif /* CONFIG_CMDLINE */
-
-	DBG("Command line is: %s\n", cmd_line);
-
-	DBG(" <- unflatten_device_tree()\n");
-}
-
-
-static int __init early_init_dt_scan_cpus(unsigned long node,
-					  const char *uname, int depth, void *data)
-{
-	char *type = of_get_flat_dt_prop(node, "device_type", NULL);
-	u32 *prop;
-	unsigned long size;
-
-	/* We are scanning "cpu" nodes only */
-	if (type == NULL || strcmp(type, "cpu") != 0)
-		return 0;
-
-	if (initial_boot_params && initial_boot_params->version >= 2) {
-		/* version 2 of the kexec param format adds the phys cpuid
-		 * of booted proc.
-		 */
-		boot_cpuid_phys = initial_boot_params->boot_cpuid_phys;
-		boot_cpuid = 0;
-	} else {
-		/* Check if it's the boot-cpu, set it's hw index in paca now */
-		if (of_get_flat_dt_prop(node, "linux,boot-cpu", NULL)
-		    != NULL) {
-			u32 *prop = of_get_flat_dt_prop(node, "reg", NULL);
-			set_hard_smp_processor_id(0, prop == NULL ? 0 : *prop);
-			boot_cpuid_phys = get_hard_smp_processor_id(0);
-		}
-	}
-
-#ifdef CONFIG_ALTIVEC
-	/* Check if we have a VMX and eventually update CPU features */
-	prop = (u32 *)of_get_flat_dt_prop(node, "ibm,vmx", NULL);
-	if (prop && (*prop) > 0) {
-		cur_cpu_spec->cpu_features |= CPU_FTR_ALTIVEC;
-		cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC;
-	}
-
-	/* Same goes for Apple's "altivec" property */
-	prop = (u32 *)of_get_flat_dt_prop(node, "altivec", NULL);
-	if (prop) {
-		cur_cpu_spec->cpu_features |= CPU_FTR_ALTIVEC;
-		cur_cpu_spec->cpu_user_features |= PPC_FEATURE_HAS_ALTIVEC;
-	}
-#endif /* CONFIG_ALTIVEC */
-
-	/*
-	 * Check for an SMT capable CPU and set the CPU feature. We do
-	 * this by looking at the size of the ibm,ppc-interrupt-server#s
-	 * property
-	 */
-	prop = (u32 *)of_get_flat_dt_prop(node, "ibm,ppc-interrupt-server#s",
-				       &size);
-	cur_cpu_spec->cpu_features &= ~CPU_FTR_SMT;
-	if (prop && ((size / sizeof(u32)) > 1))
-		cur_cpu_spec->cpu_features |= CPU_FTR_SMT;
-
-	return 0;
-}
-
-static int __init early_init_dt_scan_chosen(unsigned long node,
-					    const char *uname, int depth, void *data)
-{
-	u32 *prop;
-	u64 *prop64;
-
-	DBG("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
-
-	if (depth != 1 || strcmp(uname, "chosen") != 0)
-		return 0;
-
-	/* get platform type */
-	prop = (u32 *)of_get_flat_dt_prop(node, "linux,platform", NULL);
-	if (prop == NULL)
-		return 0;
-	_machine = *prop;
-
-	/* check if iommu is forced on or off */
-	if (of_get_flat_dt_prop(node, "linux,iommu-off", NULL) != NULL)
-		iommu_is_off = 1;
-	if (of_get_flat_dt_prop(node, "linux,iommu-force-on", NULL) != NULL)
-		iommu_force_on = 1;
-
- 	prop64 = (u64*)of_get_flat_dt_prop(node, "linux,memory-limit", NULL);
- 	if (prop64)
- 		memory_limit = *prop64;
-
- 	prop64 = (u64*)of_get_flat_dt_prop(node, "linux,tce-alloc-start",NULL);
- 	if (prop64)
- 		tce_alloc_start = *prop64;
-
- 	prop64 = (u64*)of_get_flat_dt_prop(node, "linux,tce-alloc-end", NULL);
- 	if (prop64)
- 		tce_alloc_end = *prop64;
-
-#ifdef CONFIG_PPC_RTAS
-	/* To help early debugging via the front panel, we retreive a minimal
-	 * set of RTAS infos now if available
-	 */
-	{
-		u64 *basep, *entryp;
-
-		basep = (u64*)of_get_flat_dt_prop(node,
-						  "linux,rtas-base", NULL);
-		entryp = (u64*)of_get_flat_dt_prop(node,
-						   "linux,rtas-entry", NULL);
-		prop = (u32*)of_get_flat_dt_prop(node,
-						 "linux,rtas-size", NULL);
-		if (basep && entryp && prop) {
-			rtas.base = *basep;
-			rtas.entry = *entryp;
-			rtas.size = *prop;
-		}
-	}
-#endif /* CONFIG_PPC_RTAS */
-
-	/* break now */
-	return 1;
-}
-
-static int __init early_init_dt_scan_root(unsigned long node,
-					  const char *uname, int depth, void *data)
-{
-	u32 *prop;
-
-	if (depth != 0)
-		return 0;
-
-	prop = (u32 *)of_get_flat_dt_prop(node, "#size-cells", NULL);
-	dt_root_size_cells = (prop == NULL) ? 1 : *prop;
-	DBG("dt_root_size_cells = %x\n", dt_root_size_cells);
-
-	prop = (u32 *)of_get_flat_dt_prop(node, "#address-cells", NULL);
-	dt_root_addr_cells = (prop == NULL) ? 2 : *prop;
-	DBG("dt_root_addr_cells = %x\n", dt_root_addr_cells);
-	
-	/* break now */
-	return 1;
-}
-
-static unsigned long __init dt_mem_next_cell(int s, cell_t **cellp)
-{
-	cell_t *p = *cellp;
-	unsigned long r = 0;
-
-	/* Ignore more than 2 cells */
-	while (s > 2) {
-		p++;
-		s--;
-	}
-	while (s) {
-		r <<= 32;
-		r |= *(p++);
-		s--;
-	}
-
-	*cellp = p;
-	return r;
-}
-
-
-static int __init early_init_dt_scan_memory(unsigned long node,
-					    const char *uname, int depth, void *data)
-{
-	char *type = of_get_flat_dt_prop(node, "device_type", NULL);
-	cell_t *reg, *endp;
-	unsigned long l;
-
-	/* We are scanning "memory" nodes only */
-	if (type == NULL || strcmp(type, "memory") != 0)
-		return 0;
-
-	reg = (cell_t *)of_get_flat_dt_prop(node, "reg", &l);
-	if (reg == NULL)
-		return 0;
-
-	endp = reg + (l / sizeof(cell_t));
-
-	DBG("memory scan node %s ..., reg size %ld, data: %x %x %x %x, ...\n",
-	    uname, l, reg[0], reg[1], reg[2], reg[3]);
-
-	while ((endp - reg) >= (dt_root_addr_cells + dt_root_size_cells)) {
-		unsigned long base, size;
-
-		base = dt_mem_next_cell(dt_root_addr_cells, &reg);
-		size = dt_mem_next_cell(dt_root_size_cells, &reg);
-
-		if (size == 0)
-			continue;
-		DBG(" - %lx ,  %lx\n", base, size);
-		if (iommu_is_off) {
-			if (base >= 0x80000000ul)
-				continue;
-			if ((base + size) > 0x80000000ul)
-				size = 0x80000000ul - base;
-		}
-		lmb_add(base, size);
-	}
-	return 0;
-}
-
-static void __init early_reserve_mem(void)
-{
-	u64 base, size;
-	u64 *reserve_map = (u64 *)(((unsigned long)initial_boot_params) +
-				   initial_boot_params->off_mem_rsvmap);
-	while (1) {
-		base = *(reserve_map++);
-		size = *(reserve_map++);
-		if (size == 0)
-			break;
-		DBG("reserving: %lx -> %lx\n", base, size);
-		lmb_reserve(base, size);
-	}
-
-#if 0
-	DBG("memory reserved, lmbs :\n");
-      	lmb_dump_all();
-#endif
-}
-
-void __init early_init_devtree(void *params)
-{
-	DBG(" -> early_init_devtree()\n");
-
-	/* Setup flat device-tree pointer */
-	initial_boot_params = params;
-
-	/* Retreive various informations from the /chosen node of the
-	 * device-tree, including the platform type, initrd location and
-	 * size, TCE reserve, and more ...
-	 */
-	of_scan_flat_dt(early_init_dt_scan_chosen, NULL);
-
-	/* Scan memory nodes and rebuild LMBs */
-	lmb_init();
-	of_scan_flat_dt(early_init_dt_scan_root, NULL);
-	of_scan_flat_dt(early_init_dt_scan_memory, NULL);
-	lmb_enforce_memory_limit(memory_limit);
-	lmb_analyze();
-	lmb_reserve(0, __pa(klimit));
-
-	/* Reserve LMB regions used by kernel, initrd, dt, etc... */
-	early_reserve_mem();
-
-	DBG("Scanning CPUs ...\n");
-
-	/* Retreive hash table size from flattened tree plus other
-	 * CPU related informations (altivec support, boot CPU ID, ...)
-	 */
-	of_scan_flat_dt(early_init_dt_scan_cpus, NULL);
-
-	DBG(" <- early_init_devtree()\n");
-}
-
-#undef printk
-
-int
-prom_n_addr_cells(struct device_node* np)
-{
-	int* ip;
-	do {
-		if (np->parent)
-			np = np->parent;
-		ip = (int *) get_property(np, "#address-cells", NULL);
-		if (ip != NULL)
-			return *ip;
-	} while (np->parent);
-	/* No #address-cells property for the root node, default to 1 */
-	return 1;
-}
-EXPORT_SYMBOL_GPL(prom_n_addr_cells);
-
-int
-prom_n_size_cells(struct device_node* np)
-{
-	int* ip;
-	do {
-		if (np->parent)
-			np = np->parent;
-		ip = (int *) get_property(np, "#size-cells", NULL);
-		if (ip != NULL)
-			return *ip;
-	} while (np->parent);
-	/* No #size-cells property for the root node, default to 1 */
-	return 1;
-}
-EXPORT_SYMBOL_GPL(prom_n_size_cells);
-
-/**
- * Work out the sense (active-low level / active-high edge)
- * of each interrupt from the device tree.
- */
-void __init prom_get_irq_senses(unsigned char *senses, int off, int max)
-{
-	struct device_node *np;
-	int i, j;
-
-	/* default to level-triggered */
-	memset(senses, 1, max - off);
-
-	for (np = allnodes; np != 0; np = np->allnext) {
-		for (j = 0; j < np->n_intrs; j++) {
-			i = np->intrs[j].line;
-			if (i >= off && i < max)
-				senses[i-off] = np->intrs[j].sense ?
-					IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE :
-					IRQ_SENSE_EDGE | IRQ_POLARITY_POSITIVE;
-		}
-	}
-}
-
-/**
- * Construct and return a list of the device_nodes with a given name.
- */
-struct device_node *
-find_devices(const char *name)
-{
-	struct device_node *head, **prevp, *np;
-
-	prevp = &head;
-	for (np = allnodes; np != 0; np = np->allnext) {
-		if (np->name != 0 && strcasecmp(np->name, name) == 0) {
-			*prevp = np;
-			prevp = &np->next;
-		}
-	}
-	*prevp = NULL;
-	return head;
-}
-EXPORT_SYMBOL(find_devices);
-
-/**
- * Construct and return a list of the device_nodes with a given type.
- */
-struct device_node *
-find_type_devices(const char *type)
-{
-	struct device_node *head, **prevp, *np;
-
-	prevp = &head;
-	for (np = allnodes; np != 0; np = np->allnext) {
-		if (np->type != 0 && strcasecmp(np->type, type) == 0) {
-			*prevp = np;
-			prevp = &np->next;
-		}
-	}
-	*prevp = NULL;
-	return head;
-}
-EXPORT_SYMBOL(find_type_devices);
-
-/**
- * Returns all nodes linked together
- */
-struct device_node *
-find_all_nodes(void)
-{
-	struct device_node *head, **prevp, *np;
-
-	prevp = &head;
-	for (np = allnodes; np != 0; np = np->allnext) {
-		*prevp = np;
-		prevp = &np->next;
-	}
-	*prevp = NULL;
-	return head;
-}
-EXPORT_SYMBOL(find_all_nodes);
-
-/** Checks if the given "compat" string matches one of the strings in
- * the device's "compatible" property
- */
-int
-device_is_compatible(struct device_node *device, const char *compat)
-{
-	const char* cp;
-	int cplen, l;
-
-	cp = (char *) get_property(device, "compatible", &cplen);
-	if (cp == NULL)
-		return 0;
-	while (cplen > 0) {
-		if (strncasecmp(cp, compat, strlen(compat)) == 0)
-			return 1;
-		l = strlen(cp) + 1;
-		cp += l;
-		cplen -= l;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(device_is_compatible);
-
-
-/**
- * Indicates whether the root node has a given value in its
- * compatible property.
- */
-int
-machine_is_compatible(const char *compat)
-{
-	struct device_node *root;
-	int rc = 0;
-
-	root = of_find_node_by_path("/");
-	if (root) {
-		rc = device_is_compatible(root, compat);
-		of_node_put(root);
-	}
-	return rc;
-}
-EXPORT_SYMBOL(machine_is_compatible);
-
-/**
- * Construct and return a list of the device_nodes with a given type
- * and compatible property.
- */
-struct device_node *
-find_compatible_devices(const char *type, const char *compat)
-{
-	struct device_node *head, **prevp, *np;
-
-	prevp = &head;
-	for (np = allnodes; np != 0; np = np->allnext) {
-		if (type != NULL
-		    && !(np->type != 0 && strcasecmp(np->type, type) == 0))
-			continue;
-		if (device_is_compatible(np, compat)) {
-			*prevp = np;
-			prevp = &np->next;
-		}
-	}
-	*prevp = NULL;
-	return head;
-}
-EXPORT_SYMBOL(find_compatible_devices);
-
-/**
- * Find the device_node with a given full_name.
- */
-struct device_node *
-find_path_device(const char *path)
-{
-	struct device_node *np;
-
-	for (np = allnodes; np != 0; np = np->allnext)
-		if (np->full_name != 0 && strcasecmp(np->full_name, path) == 0)
-			return np;
-	return NULL;
-}
-EXPORT_SYMBOL(find_path_device);
-
-/*******
- *
- * New implementation of the OF "find" APIs, return a refcounted
- * object, call of_node_put() when done.  The device tree and list
- * are protected by a rw_lock.
- *
- * Note that property management will need some locking as well,
- * this isn't dealt with yet.
- *
- *******/
-
-/**
- *	of_find_node_by_name - Find a node by its "name" property
- *	@from:	The node to start searching from or NULL, the node
- *		you pass will not be searched, only the next one
- *		will; typically, you pass what the previous call
- *		returned. of_node_put() will be called on it
- *	@name:	The name string to match against
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_find_node_by_name(struct device_node *from,
-	const char *name)
-{
-	struct device_node *np;
-
-	read_lock(&devtree_lock);
-	np = from ? from->allnext : allnodes;
-	for (; np != 0; np = np->allnext)
-		if (np->name != 0 && strcasecmp(np->name, name) == 0
-		    && of_node_get(np))
-			break;
-	if (from)
-		of_node_put(from);
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_find_node_by_name);
-
-/**
- *	of_find_node_by_type - Find a node by its "device_type" property
- *	@from:	The node to start searching from or NULL, the node
- *		you pass will not be searched, only the next one
- *		will; typically, you pass what the previous call
- *		returned. of_node_put() will be called on it
- *	@name:	The type string to match against
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_find_node_by_type(struct device_node *from,
-	const char *type)
-{
-	struct device_node *np;
-
-	read_lock(&devtree_lock);
-	np = from ? from->allnext : allnodes;
-	for (; np != 0; np = np->allnext)
-		if (np->type != 0 && strcasecmp(np->type, type) == 0
-		    && of_node_get(np))
-			break;
-	if (from)
-		of_node_put(from);
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_find_node_by_type);
-
-/**
- *	of_find_compatible_node - Find a node based on type and one of the
- *                                tokens in its "compatible" property
- *	@from:		The node to start searching from or NULL, the node
- *			you pass will not be searched, only the next one
- *			will; typically, you pass what the previous call
- *			returned. of_node_put() will be called on it
- *	@type:		The type string to match "device_type" or NULL to ignore
- *	@compatible:	The string to match to one of the tokens in the device
- *			"compatible" list.
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_find_compatible_node(struct device_node *from,
-	const char *type, const char *compatible)
-{
-	struct device_node *np;
-
-	read_lock(&devtree_lock);
-	np = from ? from->allnext : allnodes;
-	for (; np != 0; np = np->allnext) {
-		if (type != NULL
-		    && !(np->type != 0 && strcasecmp(np->type, type) == 0))
-			continue;
-		if (device_is_compatible(np, compatible) && of_node_get(np))
-			break;
-	}
-	if (from)
-		of_node_put(from);
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_find_compatible_node);
-
-/**
- *	of_find_node_by_path - Find a node matching a full OF path
- *	@path:	The full path to match
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_find_node_by_path(const char *path)
-{
-	struct device_node *np = allnodes;
-
-	read_lock(&devtree_lock);
-	for (; np != 0; np = np->allnext) {
-		if (np->full_name != 0 && strcasecmp(np->full_name, path) == 0
-		    && of_node_get(np))
-			break;
-	}
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_find_node_by_path);
-
-/**
- *	of_find_node_by_phandle - Find a node given a phandle
- *	@handle:	phandle of the node to find
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_find_node_by_phandle(phandle handle)
-{
-	struct device_node *np;
-
-	read_lock(&devtree_lock);
-	for (np = allnodes; np != 0; np = np->allnext)
-		if (np->linux_phandle == handle)
-			break;
-	if (np)
-		of_node_get(np);
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_find_node_by_phandle);
-
-/**
- *	of_find_all_nodes - Get next node in global list
- *	@prev:	Previous node or NULL to start iteration
- *		of_node_put() will be called on it
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_find_all_nodes(struct device_node *prev)
-{
-	struct device_node *np;
-
-	read_lock(&devtree_lock);
-	np = prev ? prev->allnext : allnodes;
-	for (; np != 0; np = np->allnext)
-		if (of_node_get(np))
-			break;
-	if (prev)
-		of_node_put(prev);
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_find_all_nodes);
-
-/**
- *	of_get_parent - Get a node's parent if any
- *	@node:	Node to get parent
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_get_parent(const struct device_node *node)
-{
-	struct device_node *np;
-
-	if (!node)
-		return NULL;
-
-	read_lock(&devtree_lock);
-	np = of_node_get(node->parent);
-	read_unlock(&devtree_lock);
-	return np;
-}
-EXPORT_SYMBOL(of_get_parent);
-
-/**
- *	of_get_next_child - Iterate a node childs
- *	@node:	parent node
- *	@prev:	previous child of the parent node, or NULL to get first
- *
- *	Returns a node pointer with refcount incremented, use
- *	of_node_put() on it when done.
- */
-struct device_node *of_get_next_child(const struct device_node *node,
-	struct device_node *prev)
-{
-	struct device_node *next;
-
-	read_lock(&devtree_lock);
-	next = prev ? prev->sibling : node->child;
-	for (; next != 0; next = next->sibling)
-		if (of_node_get(next))
-			break;
-	if (prev)
-		of_node_put(prev);
-	read_unlock(&devtree_lock);
-	return next;
-}
-EXPORT_SYMBOL(of_get_next_child);
-
-/**
- *	of_node_get - Increment refcount of a node
- *	@node:	Node to inc refcount, NULL is supported to
- *		simplify writing of callers
- *
- *	Returns node.
- */
-struct device_node *of_node_get(struct device_node *node)
-{
-	if (node)
-		kref_get(&node->kref);
-	return node;
-}
-EXPORT_SYMBOL(of_node_get);
-
-static inline struct device_node * kref_to_device_node(struct kref *kref)
-{
-	return container_of(kref, struct device_node, kref);
-}
-
-/**
- *	of_node_release - release a dynamically allocated node
- *	@kref:  kref element of the node to be released
- *
- *	In of_node_put() this function is passed to kref_put()
- *	as the destructor.
- */
-static void of_node_release(struct kref *kref)
-{
-	struct device_node *node = kref_to_device_node(kref);
-	struct property *prop = node->properties;
-
-	if (!OF_IS_DYNAMIC(node))
-		return;
-	while (prop) {
-		struct property *next = prop->next;
-		kfree(prop->name);
-		kfree(prop->value);
-		kfree(prop);
-		prop = next;
-	}
-	kfree(node->intrs);
-	kfree(node->addrs);
-	kfree(node->full_name);
-	kfree(node->data);
-	kfree(node);
-}
-
-/**
- *	of_node_put - Decrement refcount of a node
- *	@node:	Node to dec refcount, NULL is supported to
- *		simplify writing of callers
- *
- */
-void of_node_put(struct device_node *node)
-{
-	if (node)
-		kref_put(&node->kref, of_node_release);
-}
-EXPORT_SYMBOL(of_node_put);
-
-/*
- * Fix up the uninitialized fields in a new device node:
- * name, type, n_addrs, addrs, n_intrs, intrs, and pci-specific fields
- *
- * A lot of boot-time code is duplicated here, because functions such
- * as finish_node_interrupts, interpret_pci_props, etc. cannot use the
- * slab allocator.
- *
- * This should probably be split up into smaller chunks.
- */
-
-static int of_finish_dynamic_node(struct device_node *node,
-				  unsigned long *unused1, int unused2,
-				  int unused3, int unused4)
-{
-	struct device_node *parent = of_get_parent(node);
-	int err = 0;
-	phandle *ibm_phandle;
-
-	node->name = get_property(node, "name", NULL);
-	node->type = get_property(node, "device_type", NULL);
-
-	if (!parent) {
-		err = -ENODEV;
-		goto out;
-	}
-
-	/* We don't support that function on PowerMac, at least
-	 * not yet
-	 */
-	if (_machine == PLATFORM_POWERMAC)
-		return -ENODEV;
-
-	/* fix up new node's linux_phandle field */
-	if ((ibm_phandle = (unsigned int *)get_property(node, "ibm,phandle", NULL)))
-		node->linux_phandle = *ibm_phandle;
-
-out:
-	of_node_put(parent);
-	return err;
-}
-
-/*
- * Plug a device node into the tree and global list.
- */
-void of_attach_node(struct device_node *np)
-{
-	write_lock(&devtree_lock);
-	np->sibling = np->parent->child;
-	np->allnext = allnodes;
-	np->parent->child = np;
-	allnodes = np;
-	write_unlock(&devtree_lock);
-}
-
-/*
- * "Unplug" a node from the device tree.  The caller must hold
- * a reference to the node.  The memory associated with the node
- * is not freed until its refcount goes to zero.
- */
-void of_detach_node(const struct device_node *np)
-{
-	struct device_node *parent;
-
-	write_lock(&devtree_lock);
-
-	parent = np->parent;
-
-	if (allnodes == np)
-		allnodes = np->allnext;
-	else {
-		struct device_node *prev;
-		for (prev = allnodes;
-		     prev->allnext != np;
-		     prev = prev->allnext)
-			;
-		prev->allnext = np->allnext;
-	}
-
-	if (parent->child == np)
-		parent->child = np->sibling;
-	else {
-		struct device_node *prevsib;
-		for (prevsib = np->parent->child;
-		     prevsib->sibling != np;
-		     prevsib = prevsib->sibling)
-			;
-		prevsib->sibling = np->sibling;
-	}
-
-	write_unlock(&devtree_lock);
-}
-
-static int prom_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
-{
-	int err;
-
-	switch (action) {
-	case PSERIES_RECONFIG_ADD:
-		err = finish_node(node, NULL, of_finish_dynamic_node, 0, 0, 0);
-		if (err < 0) {
-			printk(KERN_ERR "finish_node returned %d\n", err);
-			err = NOTIFY_BAD;
-		}
-		break;
-	default:
-		err = NOTIFY_DONE;
-		break;
-	}
-	return err;
-}
-
-static struct notifier_block prom_reconfig_nb = {
-	.notifier_call = prom_reconfig_notifier,
-	.priority = 10, /* This one needs to run first */
-};
-
-static int __init prom_reconfig_setup(void)
-{
-	return pSeries_reconfig_notifier_register(&prom_reconfig_nb);
-}
-__initcall(prom_reconfig_setup);
-
-/*
- * Find a property with a given name for a given node
- * and return the value.
- */
-unsigned char *
-get_property(struct device_node *np, const char *name, int *lenp)
-{
-	struct property *pp;
-
-	for (pp = np->properties; pp != 0; pp = pp->next)
-		if (strcmp(pp->name, name) == 0) {
-			if (lenp != 0)
-				*lenp = pp->length;
-			return pp->value;
-		}
-	return NULL;
-}
-EXPORT_SYMBOL(get_property);
-
-/*
- * Add a property to a node.
- */
-int
-prom_add_property(struct device_node* np, struct property* prop)
-{
-	struct property **next;
-
-	prop->next = NULL;	
-	write_lock(&devtree_lock);
-	next = &np->properties;
-	while (*next) {
-		if (strcmp(prop->name, (*next)->name) == 0) {
-			/* duplicate ! don't insert it */
-			write_unlock(&devtree_lock);
-			return -1;
-		}
-		next = &(*next)->next;
-	}
-	*next = prop;
-	write_unlock(&devtree_lock);
-
-	/* try to add to proc as well if it was initialized */
-	if (np->pde)
-		proc_device_tree_add_prop(np->pde, prop);
-
-	return 0;
-}
-
-#if 0
-void
-print_properties(struct device_node *np)
-{
-	struct property *pp;
-	char *cp;
-	int i, n;
-
-	for (pp = np->properties; pp != 0; pp = pp->next) {
-		printk(KERN_INFO "%s", pp->name);
-		for (i = strlen(pp->name); i < 16; ++i)
-			printk(" ");
-		cp = (char *) pp->value;
-		for (i = pp->length; i > 0; --i, ++cp)
-			if ((i > 1 && (*cp < 0x20 || *cp > 0x7e))
-			    || (i == 1 && *cp != 0))
-				break;
-		if (i == 0 && pp->length > 1) {
-			/* looks like a string */
-			printk(" %s\n", (char *) pp->value);
-		} else {
-			/* dump it in hex */
-			n = pp->length;
-			if (n > 64)
-				n = 64;
-			if (pp->length % 4 == 0) {
-				unsigned int *p = (unsigned int *) pp->value;
-
-				n /= 4;
-				for (i = 0; i < n; ++i) {
-					if (i != 0 && (i % 4) == 0)
-						printk("\n                ");
-					printk(" %08x", *p++);
-				}
-			} else {
-				unsigned char *bp = pp->value;
-
-				for (i = 0; i < n; ++i) {
-					if (i != 0 && (i % 16) == 0)
-						printk("\n                ");
-					printk(" %02x", *bp++);
-				}
-			}
-			printk("\n");
-			if (pp->length > 64)
-				printk("                 ... (length = %d)\n",
-				       pp->length);
-		}
-	}
-}
-#endif
-
-
-
-
-
-
-
-
-
-

arch/ppc64/kernel/prom_init.c

@@ -1,2051 +0,0 @@
-/*
- * 
- *
- * Procedures for interfacing to Open Firmware.
- *
- * Paul Mackerras	August 1996.
- * Copyright (C) 1996 Paul Mackerras.
- * 
- *  Adapted for 64bit PowerPC by Dave Engebretsen and Peter Bergner.
- *    {engebret|bergner}@us.ibm.com 
- *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- */
-
-#undef DEBUG_PROM
-
-#include <stdarg.h>
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/threads.h>
-#include <linux/spinlock.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/proc_fs.h>
-#include <linux/stringify.h>
-#include <linux/delay.h>
-#include <linux/initrd.h>
-#include <linux/bitops.h>
-#include <asm/prom.h>
-#include <asm/rtas.h>
-#include <asm/abs_addr.h>
-#include <asm/page.h>
-#include <asm/processor.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/system.h>
-#include <asm/mmu.h>
-#include <asm/pgtable.h>
-#include <asm/pci.h>
-#include <asm/iommu.h>
-#include <asm/btext.h>
-#include <asm/sections.h>
-#include <asm/machdep.h>
-
-#ifdef CONFIG_LOGO_LINUX_CLUT224
-#include <linux/linux_logo.h>
-extern const struct linux_logo logo_linux_clut224;
-#endif
-
-/*
- * Properties whose value is longer than this get excluded from our
- * copy of the device tree. This value does need to be big enough to
- * ensure that we don't lose things like the interrupt-map property
- * on a PCI-PCI bridge.
- */
-#define MAX_PROPERTY_LENGTH	(1UL * 1024 * 1024)
-
-/*
- * Eventually bump that one up
- */
-#define DEVTREE_CHUNK_SIZE	0x100000
-
-/*
- * This is the size of the local memory reserve map that gets copied
- * into the boot params passed to the kernel. That size is totally
- * flexible as the kernel just reads the list until it encounters an
- * entry with size 0, so it can be changed without breaking binary
- * compatibility
- */
-#define MEM_RESERVE_MAP_SIZE	8
-
-/*
- * prom_init() is called very early on, before the kernel text
- * and data have been mapped to KERNELBASE.  At this point the code
- * is running at whatever address it has been loaded at, so
- * references to extern and static variables must be relocated
- * explicitly.  The procedure reloc_offset() returns the address
- * we're currently running at minus the address we were linked at.
- * (Note that strings count as static variables.)
- *
- * Because OF may have mapped I/O devices into the area starting at
- * KERNELBASE, particularly on CHRP machines, we can't safely call
- * OF once the kernel has been mapped to KERNELBASE.  Therefore all
- * OF calls should be done within prom_init(), and prom_init()
- * and all routines called within it must be careful to relocate
- * references as necessary.
- *
- * Note that the bss is cleared *after* prom_init runs, so we have
- * to make sure that any static or extern variables it accesses
- * are put in the data segment.
- */
-
-
-#define PROM_BUG() do {						\
-        prom_printf("kernel BUG at %s line 0x%x!\n",		\
-		    RELOC(__FILE__), __LINE__);			\
-        __asm__ __volatile__(".long " BUG_ILLEGAL_INSTR);	\
-} while (0)
-
-#ifdef DEBUG_PROM
-#define prom_debug(x...)	prom_printf(x)
-#else
-#define prom_debug(x...)
-#endif
-
-
-typedef u32 prom_arg_t;
-
-struct prom_args {
-        u32 service;
-        u32 nargs;
-        u32 nret;
-        prom_arg_t args[10];
-        prom_arg_t *rets;     /* Pointer to return values in args[16]. */
-};
-
-struct prom_t {
-	unsigned long entry;
-	ihandle root;
-	ihandle chosen;
-	int cpu;
-	ihandle stdout;
-	ihandle disp_node;
-	struct prom_args args;
-	unsigned long version;
-	unsigned long root_size_cells;
-	unsigned long root_addr_cells;
-};
-
-struct pci_reg_property {
-	struct pci_address addr;
-	u32 size_hi;
-	u32 size_lo;
-};
-
-struct mem_map_entry {
-	u64	base;
-	u64	size;
-};
-
-typedef u32 cell_t;
-
-extern void __start(unsigned long r3, unsigned long r4, unsigned long r5);
-
-extern void enter_prom(struct prom_args *args, unsigned long entry);
-extern void copy_and_flush(unsigned long dest, unsigned long src,
-			   unsigned long size, unsigned long offset);
-
-extern unsigned long klimit;
-
-/* prom structure */
-static struct prom_t __initdata prom;
-
-#define PROM_SCRATCH_SIZE 256
-
-static char __initdata of_stdout_device[256];
-static char __initdata prom_scratch[PROM_SCRATCH_SIZE];
-
-static unsigned long __initdata dt_header_start;
-static unsigned long __initdata dt_struct_start, dt_struct_end;
-static unsigned long __initdata dt_string_start, dt_string_end;
-
-static unsigned long __initdata prom_initrd_start, prom_initrd_end;
-
-static int __initdata iommu_force_on;
-static int __initdata ppc64_iommu_off;
-static int __initdata of_platform;
-
-static char __initdata prom_cmd_line[COMMAND_LINE_SIZE];
-
-static unsigned long __initdata prom_memory_limit;
-static unsigned long __initdata prom_tce_alloc_start;
-static unsigned long __initdata prom_tce_alloc_end;
-
-static unsigned long __initdata alloc_top;
-static unsigned long __initdata alloc_top_high;
-static unsigned long __initdata alloc_bottom;
-static unsigned long __initdata rmo_top;
-static unsigned long __initdata ram_top;
-
-static struct mem_map_entry __initdata mem_reserve_map[MEM_RESERVE_MAP_SIZE];
-static int __initdata mem_reserve_cnt;
-
-static cell_t __initdata regbuf[1024];
-
-
-#define MAX_CPU_THREADS 2
-
-/* TO GO */
-#ifdef CONFIG_HMT
-struct {
-	unsigned int pir;
-	unsigned int threadid;
-} hmt_thread_data[NR_CPUS];
-#endif /* CONFIG_HMT */
-
-/*
- * This are used in calls to call_prom.  The 4th and following
- * arguments to call_prom should be 32-bit values.  64 bit values
- * are truncated to 32 bits (and fortunately don't get interpreted
- * as two arguments).
- */
-#define ADDR(x)		(u32) ((unsigned long)(x) - offset)
-
-/*
- * Error results ... some OF calls will return "-1" on error, some
- * will return 0, some will return either. To simplify, here are
- * macros to use with any ihandle or phandle return value to check if
- * it is valid
- */
-
-#define PROM_ERROR		(-1u)
-#define PHANDLE_VALID(p)	((p) != 0 && (p) != PROM_ERROR)
-#define IHANDLE_VALID(i)	((i) != 0 && (i) != PROM_ERROR)
-
-
-/* This is the one and *ONLY* place where we actually call open
- * firmware from, since we need to make sure we're running in 32b
- * mode when we do.  We switch back to 64b mode upon return.
- */
-
-static int __init call_prom(const char *service, int nargs, int nret, ...)
-{
-	int i;
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-	va_list list;
-
-	_prom->args.service = ADDR(service);
-	_prom->args.nargs = nargs;
-	_prom->args.nret = nret;
-	_prom->args.rets = (prom_arg_t *)&(_prom->args.args[nargs]);
-
-	va_start(list, nret);
-	for (i=0; i < nargs; i++)
-		_prom->args.args[i] = va_arg(list, prom_arg_t);
-	va_end(list);
-
-	for (i=0; i < nret ;i++)
-		_prom->args.rets[i] = 0;
-
-	enter_prom(&_prom->args, _prom->entry);
-
-	return (nret > 0) ? _prom->args.rets[0] : 0;
-}
-
-
-static unsigned int __init prom_claim(unsigned long virt, unsigned long size,
-				unsigned long align)
-{
-	return (unsigned int)call_prom("claim", 3, 1,
-				       (prom_arg_t)virt, (prom_arg_t)size,
-				       (prom_arg_t)align);
-}
-
-static void __init prom_print(const char *msg)
-{
-	const char *p, *q;
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-
-	if (_prom->stdout == 0)
-		return;
-
-	for (p = msg; *p != 0; p = q) {
-		for (q = p; *q != 0 && *q != '\n'; ++q)
-			;
-		if (q > p)
-			call_prom("write", 3, 1, _prom->stdout, p, q - p);
-		if (*q == 0)
-			break;
-		++q;
-		call_prom("write", 3, 1, _prom->stdout, ADDR("\r\n"), 2);
-	}
-}
-
-
-static void __init prom_print_hex(unsigned long val)
-{
-	unsigned long offset = reloc_offset();
-	int i, nibbles = sizeof(val)*2;
-	char buf[sizeof(val)*2+1];
-	struct prom_t *_prom = PTRRELOC(&prom);
-
-	for (i = nibbles-1;  i >= 0;  i--) {
-		buf[i] = (val & 0xf) + '0';
-		if (buf[i] > '9')
-			buf[i] += ('a'-'0'-10);
-		val >>= 4;
-	}
-	buf[nibbles] = '\0';
-	call_prom("write", 3, 1, _prom->stdout, buf, nibbles);
-}
-
-
-static void __init prom_printf(const char *format, ...)
-{
-	unsigned long offset = reloc_offset();
-	const char *p, *q, *s;
-	va_list args;
-	unsigned long v;
-	struct prom_t *_prom = PTRRELOC(&prom);
-
-	va_start(args, format);
-	for (p = PTRRELOC(format); *p != 0; p = q) {
-		for (q = p; *q != 0 && *q != '\n' && *q != '%'; ++q)
-			;
-		if (q > p)
-			call_prom("write", 3, 1, _prom->stdout, p, q - p);
-		if (*q == 0)
-			break;
-		if (*q == '\n') {
-			++q;
-			call_prom("write", 3, 1, _prom->stdout,
-				  ADDR("\r\n"), 2);
-			continue;
-		}
-		++q;
-		if (*q == 0)
-			break;
-		switch (*q) {
-		case 's':
-			++q;
-			s = va_arg(args, const char *);
-			prom_print(s);
-			break;
-		case 'x':
-			++q;
-			v = va_arg(args, unsigned long);
-			prom_print_hex(v);
-			break;
-		}
-	}
-}
-
-
-static void __init __attribute__((noreturn)) prom_panic(const char *reason)
-{
-	unsigned long offset = reloc_offset();
-
-	prom_print(PTRRELOC(reason));
-	/* ToDo: should put up an SRC here */
-	call_prom("exit", 0, 0);
-
-	for (;;)			/* should never get here */
-		;
-}
-
-
-static int __init prom_next_node(phandle *nodep)
-{
-	phandle node;
-
-	if ((node = *nodep) != 0
-	    && (*nodep = call_prom("child", 1, 1, node)) != 0)
-		return 1;
-	if ((*nodep = call_prom("peer", 1, 1, node)) != 0)
-		return 1;
-	for (;;) {
-		if ((node = call_prom("parent", 1, 1, node)) == 0)
-			return 0;
-		if ((*nodep = call_prom("peer", 1, 1, node)) != 0)
-			return 1;
-	}
-}
-
-static int __init prom_getprop(phandle node, const char *pname,
-			       void *value, size_t valuelen)
-{
-	unsigned long offset = reloc_offset();
-
-	return call_prom("getprop", 4, 1, node, ADDR(pname),
-			 (u32)(unsigned long) value, (u32) valuelen);
-}
-
-static int __init prom_getproplen(phandle node, const char *pname)
-{
-	unsigned long offset = reloc_offset();
-
-	return call_prom("getproplen", 2, 1, node, ADDR(pname));
-}
-
-static int __init prom_setprop(phandle node, const char *pname,
-			       void *value, size_t valuelen)
-{
-	unsigned long offset = reloc_offset();
-
-	return call_prom("setprop", 4, 1, node, ADDR(pname),
-			 (u32)(unsigned long) value, (u32) valuelen);
-}
-
-/* We can't use the standard versions because of RELOC headaches. */
-#define isxdigit(c)	(('0' <= (c) && (c) <= '9') \
-			 || ('a' <= (c) && (c) <= 'f') \
-			 || ('A' <= (c) && (c) <= 'F'))
-
-#define isdigit(c)	('0' <= (c) && (c) <= '9')
-#define islower(c)	('a' <= (c) && (c) <= 'z')
-#define toupper(c)	(islower(c) ? ((c) - 'a' + 'A') : (c))
-
-unsigned long prom_strtoul(const char *cp, const char **endp)
-{
-	unsigned long result = 0, base = 10, value;
-
-	if (*cp == '0') {
-		base = 8;
-		cp++;
-		if (toupper(*cp) == 'X') {
-			cp++;
-			base = 16;
-		}
-	}
-
-	while (isxdigit(*cp) &&
-	       (value = isdigit(*cp) ? *cp - '0' : toupper(*cp) - 'A' + 10) < base) {
-		result = result * base + value;
-		cp++;
-	}
-
-	if (endp)
-		*endp = cp;
-
-	return result;
-}
-
-unsigned long prom_memparse(const char *ptr, const char **retptr)
-{
-	unsigned long ret = prom_strtoul(ptr, retptr);
-	int shift = 0;
-
-	/*
-	 * We can't use a switch here because GCC *may* generate a
-	 * jump table which won't work, because we're not running at
-	 * the address we're linked at.
-	 */
-	if ('G' == **retptr || 'g' == **retptr)
-		shift = 30;
-
-	if ('M' == **retptr || 'm' == **retptr)
-		shift = 20;
-
-	if ('K' == **retptr || 'k' == **retptr)
-		shift = 10;
-
-	if (shift) {
-		ret <<= shift;
-		(*retptr)++;
-	}
-
-	return ret;
-}
-
-/*
- * Early parsing of the command line passed to the kernel, used for
- * "mem=x" and the options that affect the iommu
- */
-static void __init early_cmdline_parse(void)
-{
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-	char *opt, *p;
-	int l = 0;
-
-	RELOC(prom_cmd_line[0]) = 0;
-	p = RELOC(prom_cmd_line);
-	if ((long)_prom->chosen > 0)
-		l = prom_getprop(_prom->chosen, "bootargs", p, COMMAND_LINE_SIZE-1);
-#ifdef CONFIG_CMDLINE
-	if (l == 0) /* dbl check */
-		strlcpy(RELOC(prom_cmd_line),
-			RELOC(CONFIG_CMDLINE), sizeof(prom_cmd_line));
-#endif /* CONFIG_CMDLINE */
-	prom_printf("command line: %s\n", RELOC(prom_cmd_line));
-
-	opt = strstr(RELOC(prom_cmd_line), RELOC("iommu="));
-	if (opt) {
-		prom_printf("iommu opt is: %s\n", opt);
-		opt += 6;
-		while (*opt && *opt == ' ')
-			opt++;
-		if (!strncmp(opt, RELOC("off"), 3))
-			RELOC(ppc64_iommu_off) = 1;
-		else if (!strncmp(opt, RELOC("force"), 5))
-			RELOC(iommu_force_on) = 1;
-	}
-
-	opt = strstr(RELOC(prom_cmd_line), RELOC("mem="));
-	if (opt) {
-		opt += 4;
-		RELOC(prom_memory_limit) = prom_memparse(opt, (const char **)&opt);
-		/* Align to 16 MB == size of large page */
-		RELOC(prom_memory_limit) = ALIGN(RELOC(prom_memory_limit), 0x1000000);
-	}
-}
-
-/*
- * To tell the firmware what our capabilities are, we have to pass
- * it a fake 32-bit ELF header containing a couple of PT_NOTE sections
- * that contain structures that contain the actual values.
- */
-static struct fake_elf {
-	Elf32_Ehdr	elfhdr;
-	Elf32_Phdr	phdr[2];
-	struct chrpnote {
-		u32	namesz;
-		u32	descsz;
-		u32	type;
-		char	name[8];	/* "PowerPC" */
-		struct chrpdesc {
-			u32	real_mode;
-			u32	real_base;
-			u32	real_size;
-			u32	virt_base;
-			u32	virt_size;
-			u32	load_base;
-		} chrpdesc;
-	} chrpnote;
-	struct rpanote {
-		u32	namesz;
-		u32	descsz;
-		u32	type;
-		char	name[24];	/* "IBM,RPA-Client-Config" */
-		struct rpadesc {
-			u32	lpar_affinity;
-			u32	min_rmo_size;
-			u32	min_rmo_percent;
-			u32	max_pft_size;
-			u32	splpar;
-			u32	min_load;
-			u32	new_mem_def;
-			u32	ignore_me;
-		} rpadesc;
-	} rpanote;
-} fake_elf = {
-	.elfhdr = {
-		.e_ident = { 0x7f, 'E', 'L', 'F',
-			     ELFCLASS32, ELFDATA2MSB, EV_CURRENT },
-		.e_type = ET_EXEC,	/* yeah right */
-		.e_machine = EM_PPC,
-		.e_version = EV_CURRENT,
-		.e_phoff = offsetof(struct fake_elf, phdr),
-		.e_phentsize = sizeof(Elf32_Phdr),
-		.e_phnum = 2
-	},
-	.phdr = {
-		[0] = {
-			.p_type = PT_NOTE,
-			.p_offset = offsetof(struct fake_elf, chrpnote),
-			.p_filesz = sizeof(struct chrpnote)
-		}, [1] = {
-			.p_type = PT_NOTE,
-			.p_offset = offsetof(struct fake_elf, rpanote),
-			.p_filesz = sizeof(struct rpanote)
-		}
-	},
-	.chrpnote = {
-		.namesz = sizeof("PowerPC"),
-		.descsz = sizeof(struct chrpdesc),
-		.type = 0x1275,
-		.name = "PowerPC",
-		.chrpdesc = {
-			.real_mode = ~0U,	/* ~0 means "don't care" */
-			.real_base = ~0U,
-			.real_size = ~0U,
-			.virt_base = ~0U,
-			.virt_size = ~0U,
-			.load_base = ~0U
-		},
-	},
-	.rpanote = {
-		.namesz = sizeof("IBM,RPA-Client-Config"),
-		.descsz = sizeof(struct rpadesc),
-		.type = 0x12759999,
-		.name = "IBM,RPA-Client-Config",
-		.rpadesc = {
-			.lpar_affinity = 0,
-			.min_rmo_size = 64,	/* in megabytes */
-			.min_rmo_percent = 0,
-			.max_pft_size = 48,	/* 2^48 bytes max PFT size */
-			.splpar = 1,
-			.min_load = ~0U,
-			.new_mem_def = 0
-		}
-	}
-};
-
-static void __init prom_send_capabilities(void)
-{
-	unsigned long offset = reloc_offset();
-	ihandle elfloader;
-
-	elfloader = call_prom("open", 1, 1, ADDR("/packages/elf-loader"));
-	if (elfloader == 0) {
-		prom_printf("couldn't open /packages/elf-loader\n");
-		return;
-	}
-	call_prom("call-method", 3, 1, ADDR("process-elf-header"),
-			elfloader, ADDR(&fake_elf));
-	call_prom("close", 1, 0, elfloader);
-}
-
-/*
- * Memory allocation strategy... our layout is normally:
- *
- *  at 14Mb or more we vmlinux, then a gap and initrd. In some rare cases, initrd
- *  might end up beeing before the kernel though. We assume this won't override
- *  the final kernel at 0, we have no provision to handle that in this version,
- *  but it should hopefully never happen.
- *
- *  alloc_top is set to the top of RMO, eventually shrink down if the TCEs overlap
- *  alloc_bottom is set to the top of kernel/initrd
- *
- *  from there, allocations are done that way : rtas is allocated topmost, and
- *  the device-tree is allocated from the bottom. We try to grow the device-tree
- *  allocation as we progress. If we can't, then we fail, we don't currently have
- *  a facility to restart elsewhere, but that shouldn't be necessary neither
- *
- *  Note that calls to reserve_mem have to be done explicitely, memory allocated
- *  with either alloc_up or alloc_down isn't automatically reserved.
- */
-
-
-/*
- * Allocates memory in the RMO upward from the kernel/initrd
- *
- * When align is 0, this is a special case, it means to allocate in place
- * at the current location of alloc_bottom or fail (that is basically
- * extending the previous allocation). Used for the device-tree flattening
- */
-static unsigned long __init alloc_up(unsigned long size, unsigned long align)
-{
-	unsigned long offset = reloc_offset();
-	unsigned long base = _ALIGN_UP(RELOC(alloc_bottom), align);
-	unsigned long addr = 0;
-
-	prom_debug("alloc_up(%x, %x)\n", size, align);
-	if (RELOC(ram_top) == 0)
-		prom_panic("alloc_up() called with mem not initialized\n");
-
-	if (align)
-		base = _ALIGN_UP(RELOC(alloc_bottom), align);
-	else
-		base = RELOC(alloc_bottom);
-
-	for(; (base + size) <= RELOC(alloc_top); 
-	    base = _ALIGN_UP(base + 0x100000, align)) {
-		prom_debug("    trying: 0x%x\n\r", base);
-		addr = (unsigned long)prom_claim(base, size, 0);
-		if (addr != PROM_ERROR)
-			break;
-		addr = 0;
-		if (align == 0)
-			break;
-	}
-	if (addr == 0)
-		return 0;
-	RELOC(alloc_bottom) = addr;
-
-	prom_debug(" -> %x\n", addr);
-	prom_debug("  alloc_bottom : %x\n", RELOC(alloc_bottom));
-	prom_debug("  alloc_top    : %x\n", RELOC(alloc_top));
-	prom_debug("  alloc_top_hi : %x\n", RELOC(alloc_top_high));
-	prom_debug("  rmo_top      : %x\n", RELOC(rmo_top));
-	prom_debug("  ram_top      : %x\n", RELOC(ram_top));
-
-	return addr;
-}
-
-/*
- * Allocates memory downard, either from top of RMO, or if highmem
- * is set, from the top of RAM. Note that this one doesn't handle
- * failures. In does claim memory if highmem is not set.
- */
-static unsigned long __init alloc_down(unsigned long size, unsigned long align,
-				       int highmem)
-{
-	unsigned long offset = reloc_offset();
-	unsigned long base, addr = 0;
-
-	prom_debug("alloc_down(%x, %x, %s)\n", size, align,
-		   highmem ? RELOC("(high)") : RELOC("(low)"));
-	if (RELOC(ram_top) == 0)
-		prom_panic("alloc_down() called with mem not initialized\n");
-
-	if (highmem) {
-		/* Carve out storage for the TCE table. */
-		addr = _ALIGN_DOWN(RELOC(alloc_top_high) - size, align);
-		if (addr <= RELOC(alloc_bottom))
-			return 0;
-		else {
-			/* Will we bump into the RMO ? If yes, check out that we
-			 * didn't overlap existing allocations there, if we did,
-			 * we are dead, we must be the first in town !
-			 */
-			if (addr < RELOC(rmo_top)) {
-				/* Good, we are first */
-				if (RELOC(alloc_top) == RELOC(rmo_top))
-					RELOC(alloc_top) = RELOC(rmo_top) = addr;
-				else
-					return 0;
-			}
-			RELOC(alloc_top_high) = addr;
-		}
-		goto bail;
-	}
-
-	base = _ALIGN_DOWN(RELOC(alloc_top) - size, align);
-	for(; base > RELOC(alloc_bottom); base = _ALIGN_DOWN(base - 0x100000, align))  {
-		prom_debug("    trying: 0x%x\n\r", base);
-		addr = (unsigned long)prom_claim(base, size, 0);
-		if (addr != PROM_ERROR)
-			break;
-		addr = 0;
-	}
-	if (addr == 0)
-		return 0;
-	RELOC(alloc_top) = addr;
-
- bail:
-	prom_debug(" -> %x\n", addr);
-	prom_debug("  alloc_bottom : %x\n", RELOC(alloc_bottom));
-	prom_debug("  alloc_top    : %x\n", RELOC(alloc_top));
-	prom_debug("  alloc_top_hi : %x\n", RELOC(alloc_top_high));
-	prom_debug("  rmo_top      : %x\n", RELOC(rmo_top));
-	prom_debug("  ram_top      : %x\n", RELOC(ram_top));
-
-	return addr;
-}
-
-/*
- * Parse a "reg" cell
- */
-static unsigned long __init prom_next_cell(int s, cell_t **cellp)
-{
-	cell_t *p = *cellp;
-	unsigned long r = 0;
-
-	/* Ignore more than 2 cells */
-	while (s > 2) {
-		p++;
-		s--;
-	}
-	while (s) {
-		r <<= 32;
-		r |= *(p++);
-		s--;
-	}
-
-	*cellp = p;
-	return r;
-}
-
-/*
- * Very dumb function for adding to the memory reserve list, but
- * we don't need anything smarter at this point
- *
- * XXX Eventually check for collisions. They should NEVER happen
- * if problems seem to show up, it would be a good start to track
- * them down.
- */
-static void reserve_mem(unsigned long base, unsigned long size)
-{
-	unsigned long offset = reloc_offset();
-	unsigned long top = base + size;
-	unsigned long cnt = RELOC(mem_reserve_cnt);
-
-	if (size == 0)
-		return;
-
-	/* We need to always keep one empty entry so that we
-	 * have our terminator with "size" set to 0 since we are
-	 * dumb and just copy this entire array to the boot params
-	 */
-	base = _ALIGN_DOWN(base, PAGE_SIZE);
-	top = _ALIGN_UP(top, PAGE_SIZE);
-	size = top - base;
-
-	if (cnt >= (MEM_RESERVE_MAP_SIZE - 1))
-		prom_panic("Memory reserve map exhausted !\n");
-	RELOC(mem_reserve_map)[cnt].base = base;
-	RELOC(mem_reserve_map)[cnt].size = size;
-	RELOC(mem_reserve_cnt) = cnt + 1;
-}
-
-/*
- * Initialize memory allocation mecanism, parse "memory" nodes and
- * obtain that way the top of memory and RMO to setup out local allocator
- */
-static void __init prom_init_mem(void)
-{
-	phandle node;
-	char *path, type[64];
-	unsigned int plen;
-	cell_t *p, *endp;
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-
-	/*
-	 * We iterate the memory nodes to find
-	 * 1) top of RMO (first node)
-	 * 2) top of memory
-	 */
-	prom_debug("root_addr_cells: %x\n", (long)_prom->root_addr_cells);
-	prom_debug("root_size_cells: %x\n", (long)_prom->root_size_cells);
-
-	prom_debug("scanning memory:\n");
-	path = RELOC(prom_scratch);
-
-	for (node = 0; prom_next_node(&node); ) {
-		type[0] = 0;
-		prom_getprop(node, "device_type", type, sizeof(type));
-
-		if (strcmp(type, RELOC("memory")))
-			continue;
-	
-		plen = prom_getprop(node, "reg", RELOC(regbuf), sizeof(regbuf));
-		if (plen > sizeof(regbuf)) {
-			prom_printf("memory node too large for buffer !\n");
-			plen = sizeof(regbuf);
-		}
-		p = RELOC(regbuf);
-		endp = p + (plen / sizeof(cell_t));
-
-#ifdef DEBUG_PROM
-		memset(path, 0, PROM_SCRATCH_SIZE);
-		call_prom("package-to-path", 3, 1, node, path, PROM_SCRATCH_SIZE-1);
-		prom_debug("  node %s :\n", path);
-#endif /* DEBUG_PROM */
-
-		while ((endp - p) >= (_prom->root_addr_cells + _prom->root_size_cells)) {
-			unsigned long base, size;
-
-			base = prom_next_cell(_prom->root_addr_cells, &p);
-			size = prom_next_cell(_prom->root_size_cells, &p);
-
-			if (size == 0)
-				continue;
-			prom_debug("    %x %x\n", base, size);
-			if (base == 0)
-				RELOC(rmo_top) = size;
-			if ((base + size) > RELOC(ram_top))
-				RELOC(ram_top) = base + size;
-		}
-	}
-
-	RELOC(alloc_bottom) = PAGE_ALIGN(RELOC(klimit) - offset + 0x4000);
-
-	/* Check if we have an initrd after the kernel, if we do move our bottom
-	 * point to after it
-	 */
-	if (RELOC(prom_initrd_start)) {
-		if (RELOC(prom_initrd_end) > RELOC(alloc_bottom))
-			RELOC(alloc_bottom) = PAGE_ALIGN(RELOC(prom_initrd_end));
-	}
-
-	/*
-	 * If prom_memory_limit is set we reduce the upper limits *except* for
-	 * alloc_top_high. This must be the real top of RAM so we can put
-	 * TCE's up there.
-	 */
-
-	RELOC(alloc_top_high) = RELOC(ram_top);
-
-	if (RELOC(prom_memory_limit)) {
-		if (RELOC(prom_memory_limit) <= RELOC(alloc_bottom)) {
-			prom_printf("Ignoring mem=%x <= alloc_bottom.\n",
-				RELOC(prom_memory_limit));
-			RELOC(prom_memory_limit) = 0;
-		} else if (RELOC(prom_memory_limit) >= RELOC(ram_top)) {
-			prom_printf("Ignoring mem=%x >= ram_top.\n",
-				RELOC(prom_memory_limit));
-			RELOC(prom_memory_limit) = 0;
-		} else {
-			RELOC(ram_top) = RELOC(prom_memory_limit);
-			RELOC(rmo_top) = min(RELOC(rmo_top), RELOC(prom_memory_limit));
-		}
-	}
-
-	/*
-	 * Setup our top alloc point, that is top of RMO or top of
-	 * segment 0 when running non-LPAR.
-	 */
-	if ( RELOC(of_platform) == PLATFORM_PSERIES_LPAR )
-		RELOC(alloc_top) = RELOC(rmo_top);
-	else
-		/* Some RS64 machines have buggy firmware where claims up at 1GB
-		 * fails. Cap at 768MB as a workaround. Still plenty of room.
-		 */
-		RELOC(alloc_top) = RELOC(rmo_top) = min(0x30000000ul, RELOC(ram_top));
-
-	prom_printf("memory layout at init:\n");
-	prom_printf("  memory_limit : %x (16 MB aligned)\n", RELOC(prom_memory_limit));
-	prom_printf("  alloc_bottom : %x\n", RELOC(alloc_bottom));
-	prom_printf("  alloc_top    : %x\n", RELOC(alloc_top));
-	prom_printf("  alloc_top_hi : %x\n", RELOC(alloc_top_high));
-	prom_printf("  rmo_top      : %x\n", RELOC(rmo_top));
-	prom_printf("  ram_top      : %x\n", RELOC(ram_top));
-}
-
-
-/*
- * Allocate room for and instanciate RTAS
- */
-static void __init prom_instantiate_rtas(void)
-{
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-	phandle rtas_node;
-	ihandle rtas_inst;
-	u32 base, entry = 0;
-	u32 size = 0;
-
-	prom_debug("prom_instantiate_rtas: start...\n");
-
-	rtas_node = call_prom("finddevice", 1, 1, ADDR("/rtas"));
-	prom_debug("rtas_node: %x\n", rtas_node);
-	if (!PHANDLE_VALID(rtas_node))
-		return;
-
-	prom_getprop(rtas_node, "rtas-size", &size, sizeof(size));
-	if (size == 0)
-		return;
-
-	base = alloc_down(size, PAGE_SIZE, 0);
-	if (base == 0) {
-		prom_printf("RTAS allocation failed !\n");
-		return;
-	}
-
-	rtas_inst = call_prom("open", 1, 1, ADDR("/rtas"));
-	if (!IHANDLE_VALID(rtas_inst)) {
-		prom_printf("opening rtas package failed");
-		return;
-	}
-
-	prom_printf("instantiating rtas at 0x%x ...", base);
-
-	if (call_prom("call-method", 3, 2,
-		      ADDR("instantiate-rtas"),
-		      rtas_inst, base) != PROM_ERROR) {
-		entry = (long)_prom->args.rets[1];
-	}
-	if (entry == 0) {
-		prom_printf(" failed\n");
-		return;
-	}
-	prom_printf(" done\n");
-
-	reserve_mem(base, size);
-
-	prom_setprop(rtas_node, "linux,rtas-base", &base, sizeof(base));
-	prom_setprop(rtas_node, "linux,rtas-entry", &entry, sizeof(entry));
-
-	prom_debug("rtas base     = 0x%x\n", base);
-	prom_debug("rtas entry    = 0x%x\n", entry);
-	prom_debug("rtas size     = 0x%x\n", (long)size);
-
-	prom_debug("prom_instantiate_rtas: end...\n");
-}
-
-
-/*
- * Allocate room for and initialize TCE tables
- */
-static void __init prom_initialize_tce_table(void)
-{
-	phandle node;
-	ihandle phb_node;
-	unsigned long offset = reloc_offset();
-	char compatible[64], type[64], model[64];
-	char *path = RELOC(prom_scratch);
-	u64 base, align;
-	u32 minalign, minsize;
-	u64 tce_entry, *tce_entryp;
-	u64 local_alloc_top, local_alloc_bottom;
-	u64 i;
-
-	if (RELOC(ppc64_iommu_off))
-		return;
-
-	prom_debug("starting prom_initialize_tce_table\n");
-
-	/* Cache current top of allocs so we reserve a single block */
-	local_alloc_top = RELOC(alloc_top_high);
-	local_alloc_bottom = local_alloc_top;
-
-	/* Search all nodes looking for PHBs. */
-	for (node = 0; prom_next_node(&node); ) {
-		compatible[0] = 0;
-		type[0] = 0;
-		model[0] = 0;
-		prom_getprop(node, "compatible",
-			     compatible, sizeof(compatible));
-		prom_getprop(node, "device_type", type, sizeof(type));
-		prom_getprop(node, "model", model, sizeof(model));
-
-		if ((type[0] == 0) || (strstr(type, RELOC("pci")) == NULL))
-			continue;
-
-		/* Keep the old logic in tack to avoid regression. */
-		if (compatible[0] != 0) {
-			if ((strstr(compatible, RELOC("python")) == NULL) &&
-			    (strstr(compatible, RELOC("Speedwagon")) == NULL) &&
-			    (strstr(compatible, RELOC("Winnipeg")) == NULL))
-				continue;
-		} else if (model[0] != 0) {
-			if ((strstr(model, RELOC("ython")) == NULL) &&
-			    (strstr(model, RELOC("peedwagon")) == NULL) &&
-			    (strstr(model, RELOC("innipeg")) == NULL))
-				continue;
-		}
-
-		if (prom_getprop(node, "tce-table-minalign", &minalign,
-				 sizeof(minalign)) == PROM_ERROR)
-			minalign = 0;
-		if (prom_getprop(node, "tce-table-minsize", &minsize,
-				 sizeof(minsize)) == PROM_ERROR)
-			minsize = 4UL << 20;
-
-		/*
-		 * Even though we read what OF wants, we just set the table
-		 * size to 4 MB.  This is enough to map 2GB of PCI DMA space.
-		 * By doing this, we avoid the pitfalls of trying to DMA to
-		 * MMIO space and the DMA alias hole.
-		 *
-		 * On POWER4, firmware sets the TCE region by assuming
-		 * each TCE table is 8MB. Using this memory for anything
-		 * else will impact performance, so we always allocate 8MB.
-		 * Anton
-		 */
-		if (__is_processor(PV_POWER4) || __is_processor(PV_POWER4p))
-			minsize = 8UL << 20;
-		else
-			minsize = 4UL << 20;
-
-		/* Align to the greater of the align or size */
-		align = max(minalign, minsize);
-		base = alloc_down(minsize, align, 1);
-		if (base == 0)
-			prom_panic("ERROR, cannot find space for TCE table.\n");
-		if (base < local_alloc_bottom)
-			local_alloc_bottom = base;
-
-		/* Save away the TCE table attributes for later use. */
-		prom_setprop(node, "linux,tce-base", &base, sizeof(base));
-		prom_setprop(node, "linux,tce-size", &minsize, sizeof(minsize));
-
-		/* It seems OF doesn't null-terminate the path :-( */
-		memset(path, 0, sizeof(path));
-		/* Call OF to setup the TCE hardware */
-		if (call_prom("package-to-path", 3, 1, node,
-			      path, PROM_SCRATCH_SIZE-1) == PROM_ERROR) {
-			prom_printf("package-to-path failed\n");
-		}
-
-		prom_debug("TCE table: %s\n", path);
-		prom_debug("\tnode = 0x%x\n", node);
-		prom_debug("\tbase = 0x%x\n", base);
-		prom_debug("\tsize = 0x%x\n", minsize);
-
-		/* Initialize the table to have a one-to-one mapping
-		 * over the allocated size.
-		 */
-		tce_entryp = (unsigned long *)base;
-		for (i = 0; i < (minsize >> 3) ;tce_entryp++, i++) {
-			tce_entry = (i << PAGE_SHIFT);
-			tce_entry |= 0x3;
-			*tce_entryp = tce_entry;
-		}
-
-		prom_printf("opening PHB %s", path);
-		phb_node = call_prom("open", 1, 1, path);
-		if (phb_node == 0)
-			prom_printf("... failed\n");
-		else
-			prom_printf("... done\n");
-
-		call_prom("call-method", 6, 0, ADDR("set-64-bit-addressing"),
-			  phb_node, -1, minsize,
-			  (u32) base, (u32) (base >> 32));
-		call_prom("close", 1, 0, phb_node);
-	}
-
-	reserve_mem(local_alloc_bottom, local_alloc_top - local_alloc_bottom);
-
-	if (RELOC(prom_memory_limit)) {
-		/*
-		 * We align the start to a 16MB boundary so we can map the TCE area
-		 * using large pages if possible. The end should be the top of RAM
-		 * so no need to align it.
-		 */
-		RELOC(prom_tce_alloc_start) = _ALIGN_DOWN(local_alloc_bottom, 0x1000000);
-		RELOC(prom_tce_alloc_end) = local_alloc_top;
-	}
-
-	/* Flag the first invalid entry */
-	prom_debug("ending prom_initialize_tce_table\n");
-}
-
-/*
- * With CHRP SMP we need to use the OF to start the other
- * processors so we can't wait until smp_boot_cpus (the OF is
- * trashed by then) so we have to put the processors into
- * a holding pattern controlled by the kernel (not OF) before
- * we destroy the OF.
- *
- * This uses a chunk of low memory, puts some holding pattern
- * code there and sends the other processors off to there until
- * smp_boot_cpus tells them to do something.  The holding pattern
- * checks that address until its cpu # is there, when it is that
- * cpu jumps to __secondary_start().  smp_boot_cpus() takes care
- * of setting those values.
- *
- * We also use physical address 0x4 here to tell when a cpu
- * is in its holding pattern code.
- *
- * Fixup comment... DRENG / PPPBBB - Peter
- *
- * -- Cort
- */
-static void __init prom_hold_cpus(void)
-{
-	unsigned long i;
-	unsigned int reg;
-	phandle node;
-	unsigned long offset = reloc_offset();
-	char type[64];
-	int cpuid = 0;
-	unsigned int interrupt_server[MAX_CPU_THREADS];
-	unsigned int cpu_threads, hw_cpu_num;
-	int propsize;
-	extern void __secondary_hold(void);
-	extern unsigned long __secondary_hold_spinloop;
-	extern unsigned long __secondary_hold_acknowledge;
-	unsigned long *spinloop
-		= (void *)virt_to_abs(&__secondary_hold_spinloop);
-	unsigned long *acknowledge
-		= (void *)virt_to_abs(&__secondary_hold_acknowledge);
-	unsigned long secondary_hold
-		= virt_to_abs(*PTRRELOC((unsigned long *)__secondary_hold));
-	struct prom_t *_prom = PTRRELOC(&prom);
-
-	prom_debug("prom_hold_cpus: start...\n");
-	prom_debug("    1) spinloop       = 0x%x\n", (unsigned long)spinloop);
-	prom_debug("    1) *spinloop      = 0x%x\n", *spinloop);
-	prom_debug("    1) acknowledge    = 0x%x\n",
-		   (unsigned long)acknowledge);
-	prom_debug("    1) *acknowledge   = 0x%x\n", *acknowledge);
-	prom_debug("    1) secondary_hold = 0x%x\n", secondary_hold);
-
-	/* Set the common spinloop variable, so all of the secondary cpus
-	 * will block when they are awakened from their OF spinloop.
-	 * This must occur for both SMP and non SMP kernels, since OF will
-	 * be trashed when we move the kernel.
-	 */
-	*spinloop = 0;
-
-#ifdef CONFIG_HMT
-	for (i=0; i < NR_CPUS; i++) {
-		RELOC(hmt_thread_data)[i].pir = 0xdeadbeef;
-	}
-#endif
-	/* look for cpus */
-	for (node = 0; prom_next_node(&node); ) {
-		type[0] = 0;
-		prom_getprop(node, "device_type", type, sizeof(type));
-		if (strcmp(type, RELOC("cpu")) != 0)
-			continue;
-
-		/* Skip non-configured cpus. */
-		if (prom_getprop(node, "status", type, sizeof(type)) > 0)
-			if (strcmp(type, RELOC("okay")) != 0)
-				continue;
-
-		reg = -1;
-		prom_getprop(node, "reg", &reg, sizeof(reg));
-
-		prom_debug("\ncpuid        = 0x%x\n", cpuid);
-		prom_debug("cpu hw idx   = 0x%x\n", reg);
-
-		/* Init the acknowledge var which will be reset by
-		 * the secondary cpu when it awakens from its OF
-		 * spinloop.
-		 */
-		*acknowledge = (unsigned long)-1;
-
-		propsize = prom_getprop(node, "ibm,ppc-interrupt-server#s",
-					&interrupt_server,
-					sizeof(interrupt_server));
-		if (propsize < 0) {
-			/* no property.  old hardware has no SMT */
-			cpu_threads = 1;
-			interrupt_server[0] = reg; /* fake it with phys id */
-		} else {
-			/* We have a threaded processor */
-			cpu_threads = propsize / sizeof(u32);
-			if (cpu_threads > MAX_CPU_THREADS) {
-				prom_printf("SMT: too many threads!\n"
-					    "SMT: found %x, max is %x\n",
-					    cpu_threads, MAX_CPU_THREADS);
-				cpu_threads = 1; /* ToDo: panic? */
-			}
-		}
-
-		hw_cpu_num = interrupt_server[0];
-		if (hw_cpu_num != _prom->cpu) {
-			/* Primary Thread of non-boot cpu */
-			prom_printf("%x : starting cpu hw idx %x... ", cpuid, reg);
-			call_prom("start-cpu", 3, 0, node,
-				  secondary_hold, reg);
-
-			for ( i = 0 ; (i < 100000000) && 
-			      (*acknowledge == ((unsigned long)-1)); i++ )
-				mb();
-
-			if (*acknowledge == reg) {
-				prom_printf("done\n");
-				/* We have to get every CPU out of OF,
-				 * even if we never start it. */
-				if (cpuid >= NR_CPUS)
-					goto next;
-			} else {
-				prom_printf("failed: %x\n", *acknowledge);
-			}
-		}
-#ifdef CONFIG_SMP
-		else
-			prom_printf("%x : boot cpu     %x\n", cpuid, reg);
-#endif
-next:
-#ifdef CONFIG_SMP
-		/* Init paca for secondary threads.   They start later. */
-		for (i=1; i < cpu_threads; i++) {
-			cpuid++;
-			if (cpuid >= NR_CPUS)
-				continue;
-		}
-#endif /* CONFIG_SMP */
-		cpuid++;
-	}
-#ifdef CONFIG_HMT
-	/* Only enable HMT on processors that provide support. */
-	if (__is_processor(PV_PULSAR) || 
-	    __is_processor(PV_ICESTAR) ||
-	    __is_processor(PV_SSTAR)) {
-		prom_printf("    starting secondary threads\n");
-
-		for (i = 0; i < NR_CPUS; i += 2) {
-			if (!cpu_online(i))
-				continue;
-
-			if (i == 0) {
-				unsigned long pir = mfspr(SPRN_PIR);
-				if (__is_processor(PV_PULSAR)) {
-					RELOC(hmt_thread_data)[i].pir = 
-						pir & 0x1f;
-				} else {
-					RELOC(hmt_thread_data)[i].pir = 
-						pir & 0x3ff;
-				}
-			}
-		}
-	} else {
-		prom_printf("Processor is not HMT capable\n");
-	}
-#endif
-
-	if (cpuid > NR_CPUS)
-		prom_printf("WARNING: maximum CPUs (" __stringify(NR_CPUS)
-			    ") exceeded: ignoring extras\n");
-
-	prom_debug("prom_hold_cpus: end...\n");
-}
-
-
-static void __init prom_init_client_services(unsigned long pp)
-{
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-
-	/* Get a handle to the prom entry point before anything else */
-	_prom->entry = pp;
-
-	/* Init default value for phys size */
-	_prom->root_size_cells = 1;
-	_prom->root_addr_cells = 2;
-
-	/* get a handle for the stdout device */
-	_prom->chosen = call_prom("finddevice", 1, 1, ADDR("/chosen"));
-	if (!PHANDLE_VALID(_prom->chosen))
-		prom_panic("cannot find chosen"); /* msg won't be printed :( */
-
-	/* get device tree root */
-	_prom->root = call_prom("finddevice", 1, 1, ADDR("/"));
-	if (!PHANDLE_VALID(_prom->root))
-		prom_panic("cannot find device tree root"); /* msg won't be printed :( */
-}
-
-static void __init prom_init_stdout(void)
-{
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-	char *path = RELOC(of_stdout_device);
-	char type[16];
-	u32 val;
-
-	if (prom_getprop(_prom->chosen, "stdout", &val, sizeof(val)) <= 0)
-		prom_panic("cannot find stdout");
-
-	_prom->stdout = val;
-
-	/* Get the full OF pathname of the stdout device */
-	memset(path, 0, 256);
-	call_prom("instance-to-path", 3, 1, _prom->stdout, path, 255);
-	val = call_prom("instance-to-package", 1, 1, _prom->stdout);
-	prom_setprop(_prom->chosen, "linux,stdout-package", &val, sizeof(val));
-	prom_printf("OF stdout device is: %s\n", RELOC(of_stdout_device));
-	prom_setprop(_prom->chosen, "linux,stdout-path",
-		     RELOC(of_stdout_device), strlen(RELOC(of_stdout_device))+1);
-
-	/* If it's a display, note it */
-	memset(type, 0, sizeof(type));
-	prom_getprop(val, "device_type", type, sizeof(type));
-	if (strcmp(type, RELOC("display")) == 0) {
-		_prom->disp_node = val;
-		prom_setprop(val, "linux,boot-display", NULL, 0);
-	}
-}
-
-static void __init prom_close_stdin(void)
-{
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-	ihandle val;
-
-	if (prom_getprop(_prom->chosen, "stdin", &val, sizeof(val)) > 0)
-		call_prom("close", 1, 0, val);
-}
-
-static int __init prom_find_machine_type(void)
-{
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-	char compat[256];
-	int len, i = 0;
-	phandle rtas;
-
-	len = prom_getprop(_prom->root, "compatible",
-			   compat, sizeof(compat)-1);
-	if (len > 0) {
-		compat[len] = 0;
-		while (i < len) {
-			char *p = &compat[i];
-			int sl = strlen(p);
-			if (sl == 0)
-				break;
-			if (strstr(p, RELOC("Power Macintosh")) ||
-			    strstr(p, RELOC("MacRISC4")))
-				return PLATFORM_POWERMAC;
-			if (strstr(p, RELOC("Momentum,Maple")))
-				return PLATFORM_MAPLE;
-			i += sl + 1;
-		}
-	}
-	/* Default to pSeries. We need to know if we are running LPAR */
-	rtas = call_prom("finddevice", 1, 1, ADDR("/rtas"));
-	if (PHANDLE_VALID(rtas)) {
-		int x = prom_getproplen(rtas, "ibm,hypertas-functions");
-		if (x != PROM_ERROR) {
-			prom_printf("Hypertas detected, assuming LPAR !\n");
-			return PLATFORM_PSERIES_LPAR;
-		}
-	}
-	return PLATFORM_PSERIES;
-}
-
-static int __init prom_set_color(ihandle ih, int i, int r, int g, int b)
-{
-	unsigned long offset = reloc_offset();
-
-	return call_prom("call-method", 6, 1, ADDR("color!"), ih, i, b, g, r);
-}
-
-/*
- * If we have a display that we don't know how to drive,
- * we will want to try to execute OF's open method for it
- * later.  However, OF will probably fall over if we do that
- * we've taken over the MMU.
- * So we check whether we will need to open the display,
- * and if so, open it now.
- */
-static void __init prom_check_displays(void)
-{
-	unsigned long offset = reloc_offset();
-	struct prom_t *_prom = PTRRELOC(&prom);
-	char type[16], *path;
-	phandle node;
-	ihandle ih;
-	int i;
-
-	static unsigned char default_colors[] = {
-		0x00, 0x00, 0x00,
-		0x00, 0x00, 0xaa,
-		0x00, 0xaa, 0x00,
-		0x00, 0xaa, 0xaa,
-		0xaa, 0x00, 0x00,
-		0xaa, 0x00, 0xaa,
-		0xaa, 0xaa, 0x00,
-		0xaa, 0xaa, 0xaa,
-		0x55, 0x55, 0x55,
-		0x55, 0x55, 0xff,
-		0x55, 0xff, 0x55,
-		0x55, 0xff, 0xff,
-		0xff, 0x55, 0x55,
-		0xff, 0x55, 0xff,
-		0xff, 0xff, 0x55,
-		0xff, 0xff, 0xff
-	};
-	const unsigned char *clut;
-
-	prom_printf("Looking for displays\n");
-	for (node = 0; prom_next_node(&node); ) {
-		memset(type, 0, sizeof(type));
-		prom_getprop(node, "device_type", type, sizeof(type));
-		if (strcmp(type, RELOC("display")) != 0)
-			continue;
-
-		/* It seems OF doesn't null-terminate the path :-( */
-		path = RELOC(prom_scratch);
-		memset(path, 0, PROM_SCRATCH_SIZE);
-
-		/*
-		 * leave some room at the end of the path for appending extra
-		 * arguments
-		 */
-		if (call_prom("package-to-path", 3, 1, node, path,
-			      PROM_SCRATCH_SIZE-10) == PROM_ERROR)
-			continue;
-		prom_printf("found display   : %s, opening ... ", path);
-		
-		ih = call_prom("open", 1, 1, path);
-		if (ih == 0) {
-			prom_printf("failed\n");
-			continue;
-		}
-
-		/* Success */
-		prom_printf("done\n");
-		prom_setprop(node, "linux,opened", NULL, 0);
-
-		/*
-		 * stdout wasn't a display node, pick the first we can find
-		 * for btext
-		 */
-		if (_prom->disp_node == 0)
-			_prom->disp_node = node;
-
-		/* Setup a useable color table when the appropriate
-		 * method is available. Should update this to set-colors */
-		clut = RELOC(default_colors);
-		for (i = 0; i < 32; i++, clut += 3)
-			if (prom_set_color(ih, i, clut[0], clut[1],
-					   clut[2]) != 0)
-				break;
-
-#ifdef CONFIG_LOGO_LINUX_CLUT224
-		clut = PTRRELOC(RELOC(logo_linux_clut224.clut));
-		for (i = 0; i < RELOC(logo_linux_clut224.clutsize); i++, clut += 3)
-			if (prom_set_color(ih, i + 32, clut[0], clut[1],
-					   clut[2]) != 0)
-				break;
-#endif /* CONFIG_LOGO_LINUX_CLUT224 */
-	}
-}
-
-
-/* Return (relocated) pointer to this much memory: moves initrd if reqd. */
-static void __init *make_room(unsigned long *mem_start, unsigned long *mem_end,
-			      unsigned long needed, unsigned long align)
-{
-	unsigned long offset = reloc_offset();
-	void *ret;
-
-	*mem_start = _ALIGN(*mem_start, align);
-	while ((*mem_start + needed) > *mem_end) {
-		unsigned long room, chunk;
-
-		prom_debug("Chunk exhausted, claiming more at %x...\n",
-			   RELOC(alloc_bottom));
-		room = RELOC(alloc_top) - RELOC(alloc_bottom);
-		if (room > DEVTREE_CHUNK_SIZE)
-			room = DEVTREE_CHUNK_SIZE;
-		if (room < PAGE_SIZE)
-			prom_panic("No memory for flatten_device_tree (no room)");
-		chunk = alloc_up(room, 0);
-		if (chunk == 0)
-			prom_panic("No memory for flatten_device_tree (claim failed)");
-		*mem_end = RELOC(alloc_top);
-	}
-
-	ret = (void *)*mem_start;
-	*mem_start += needed;
-
-	return ret;
-}
-
-#define dt_push_token(token, mem_start, mem_end) \
-	do { *((u32 *)make_room(mem_start, mem_end, 4, 4)) = token; } while(0)
-
-static unsigned long __init dt_find_string(char *str)
-{
-	unsigned long offset = reloc_offset();
-	char *s, *os;
-
-	s = os = (char *)RELOC(dt_string_start);
-	s += 4;
-	while (s <  (char *)RELOC(dt_string_end)) {
-		if (strcmp(s, str) == 0)
-			return s - os;
-		s += strlen(s) + 1;
-	}
-	return 0;
-}
-
-/*
- * The Open Firmware 1275 specification states properties must be 31 bytes or
- * less, however not all firmwares obey this. Make it 64 bytes to be safe.
- */
-#define MAX_PROPERTY_NAME 64
-
-static void __init scan_dt_build_strings(phandle node,
-					 unsigned long *mem_start,
-					 unsigned long *mem_end)
-{
-	unsigned long offset = reloc_offset();
-	char *prev_name, *namep, *sstart;
-	unsigned long soff;
-	phandle child;
-
-	sstart =  (char *)RELOC(dt_string_start);
-
-	/* get and store all property names */
-	prev_name = RELOC("");
-	for (;;) {
-		/* 64 is max len of name including nul. */
-		namep = make_room(mem_start, mem_end, MAX_PROPERTY_NAME, 1);
-		if (call_prom("nextprop", 3, 1, node, prev_name, namep) != 1) {
-			/* No more nodes: unwind alloc */
-			*mem_start = (unsigned long)namep;
-			break;
-		}
-
- 		/* skip "name" */
- 		if (strcmp(namep, RELOC("name")) == 0) {
- 			*mem_start = (unsigned long)namep;
- 			prev_name = RELOC("name");
- 			continue;
- 		}
-		/* get/create string entry */
-		soff = dt_find_string(namep);
-		if (soff != 0) {
-			*mem_start = (unsigned long)namep;
-			namep = sstart + soff;
-		} else {
-			/* Trim off some if we can */
-			*mem_start = (unsigned long)namep + strlen(namep) + 1;
-			RELOC(dt_string_end) = *mem_start;
-		}
-		prev_name = namep;
-	}
-
-	/* do all our children */
-	child = call_prom("child", 1, 1, node);
-	while (child != 0) {
-		scan_dt_build_strings(child, mem_start, mem_end);
-		child = call_prom("peer", 1, 1, child);
-	}
-}
-
-static void __init scan_dt_build_struct(phandle node, unsigned long *mem_start,
-					unsigned long *mem_end)
-{
-	phandle child;
-	char *namep, *prev_name, *sstart, *p, *ep, *lp, *path;
-	unsigned long soff;
-	unsigned char *valp;
-	unsigned long offset = reloc_offset();
-	static char pname[MAX_PROPERTY_NAME];
-	int l;
-
-	dt_push_token(OF_DT_BEGIN_NODE, mem_start, mem_end);
-
-	/* get the node's full name */
-	namep = (char *)*mem_start;
-	l = call_prom("package-to-path", 3, 1, node,
-		      namep, *mem_end - *mem_start);
-	if (l >= 0) {
-		/* Didn't fit?  Get more room. */
-		if ((l+1) > (*mem_end - *mem_start)) {
-			namep = make_room(mem_start, mem_end, l+1, 1);
-			call_prom("package-to-path", 3, 1, node, namep, l);
-		}
-		namep[l] = '\0';
-
-		/* Fixup an Apple bug where they have bogus \0 chars in the
-		 * middle of the path in some properties
-		 */
-		for (p = namep, ep = namep + l; p < ep; p++)
-			if (*p == '\0') {
-				memmove(p, p+1, ep - p);
-				ep--; l--; p--;
-			}
-
-		/* now try to extract the unit name in that mess */
-		for (p = namep, lp = NULL; *p; p++)
-			if (*p == '/')
-				lp = p + 1;
-		if (lp != NULL)
-			memmove(namep, lp, strlen(lp) + 1);
-		*mem_start = _ALIGN(((unsigned long) namep) +
-				    strlen(namep) + 1, 4);
-	}
-
-	/* get it again for debugging */
-	path = RELOC(prom_scratch);
-	memset(path, 0, PROM_SCRATCH_SIZE);
-	call_prom("package-to-path", 3, 1, node, path, PROM_SCRATCH_SIZE-1);
-
-	/* get and store all properties */
-	prev_name = RELOC("");
-	sstart = (char *)RELOC(dt_string_start);
-	for (;;) {
-		if (call_prom("nextprop", 3, 1, node, prev_name,
-			      RELOC(pname)) != 1)
-			break;
-
- 		/* skip "name" */
- 		if (strcmp(RELOC(pname), RELOC("name")) == 0) {
- 			prev_name = RELOC("name");
- 			continue;
- 		}
-
-		/* find string offset */
-		soff = dt_find_string(RELOC(pname));
-		if (soff == 0) {
-			prom_printf("WARNING: Can't find string index for"
-				    " <%s>, node %s\n", RELOC(pname), path);
-			break;
-		}
-		prev_name = sstart + soff;
-
-		/* get length */
-		l = call_prom("getproplen", 2, 1, node, RELOC(pname));
-
-		/* sanity checks */
-		if (l == PROM_ERROR)
-			continue;
-		if (l > MAX_PROPERTY_LENGTH) {
-			prom_printf("WARNING: ignoring large property ");
-			/* It seems OF doesn't null-terminate the path :-( */
-			prom_printf("[%s] ", path);
-			prom_printf("%s length 0x%x\n", RELOC(pname), l);
-			continue;
-		}
-
-		/* push property head */
-		dt_push_token(OF_DT_PROP, mem_start, mem_end);
-		dt_push_token(l, mem_start, mem_end);
-		dt_push_token(soff, mem_start, mem_end);
-
-		/* push property content */
-		valp = make_room(mem_start, mem_end, l, 4);
-		call_prom("getprop", 4, 1, node, RELOC(pname), valp, l);
-		*mem_start = _ALIGN(*mem_start, 4);
-	}
-
-	/* Add a "linux,phandle" property. */
-	soff = dt_find_string(RELOC("linux,phandle"));
-	if (soff == 0)
-		prom_printf("WARNING: Can't find string index for"
-			    " <linux-phandle> node %s\n", path);
-	else {
-		dt_push_token(OF_DT_PROP, mem_start, mem_end);
-		dt_push_token(4, mem_start, mem_end);
-		dt_push_token(soff, mem_start, mem_end);
-		valp = make_room(mem_start, mem_end, 4, 4);
-		*(u32 *)valp = node;
-	}
-
-	/* do all our children */
-	child = call_prom("child", 1, 1, node);
-	while (child != 0) {
-		scan_dt_build_struct(child, mem_start, mem_end);
-		child = call_prom("peer", 1, 1, child);
-	}
-
-	dt_push_token(OF_DT_END_NODE, mem_start, mem_end);
-}
-
-static void __init flatten_device_tree(void)
-{
-	phandle root;
-	unsigned long offset = reloc_offset();
-	unsigned long mem_start, mem_end, room;
-	struct boot_param_header *hdr;
-	struct prom_t *_prom = PTRRELOC(&prom);
-	char *namep;
-	u64 *rsvmap;
-
-	/*
-	 * Check how much room we have between alloc top & bottom (+/- a
-	 * few pages), crop to 4Mb, as this is our "chuck" size
-	 */
-	room = RELOC(alloc_top) - RELOC(alloc_bottom) - 0x4000;
-	if (room > DEVTREE_CHUNK_SIZE)
-		room = DEVTREE_CHUNK_SIZE;
-	prom_debug("starting device tree allocs at %x\n", RELOC(alloc_bottom));
-
-	/* Now try to claim that */
-	mem_start = (unsigned long)alloc_up(room, PAGE_SIZE);
-	if (mem_start == 0)
-		prom_panic("Can't allocate initial device-tree chunk\n");
-	mem_end = RELOC(alloc_top);
-
-	/* Get root of tree */
-	root = call_prom("peer", 1, 1, (phandle)0);
-	if (root == (phandle)0)
-		prom_panic ("couldn't get device tree root\n");
-
-	/* Build header and make room for mem rsv map */ 
-	mem_start = _ALIGN(mem_start, 4);
-	hdr = make_room(&mem_start, &mem_end,
-			sizeof(struct boot_param_header), 4);
-	RELOC(dt_header_start) = (unsigned long)hdr;
-	rsvmap = make_room(&mem_start, &mem_end, sizeof(mem_reserve_map), 8);
-
-	/* Start of strings */
-	mem_start = PAGE_ALIGN(mem_start);
-	RELOC(dt_string_start) = mem_start;
-	mem_start += 4; /* hole */
-
-	/* Add "linux,phandle" in there, we'll need it */
-	namep = make_room(&mem_start, &mem_end, 16, 1);
-	strcpy(namep, RELOC("linux,phandle"));
-	mem_start = (unsigned long)namep + strlen(namep) + 1;
-
-	/* Build string array */
-	prom_printf("Building dt strings...\n"); 
-	scan_dt_build_strings(root, &mem_start, &mem_end);
-	RELOC(dt_string_end) = mem_start;
-
-	/* Build structure */
-	mem_start = PAGE_ALIGN(mem_start);
-	RELOC(dt_struct_start) = mem_start;
-	prom_printf("Building dt structure...\n"); 
-	scan_dt_build_struct(root, &mem_start, &mem_end);
-	dt_push_token(OF_DT_END, &mem_start, &mem_end);
-	RELOC(dt_struct_end) = PAGE_ALIGN(mem_start);
-
-	/* Finish header */
-	hdr->boot_cpuid_phys = _prom->cpu;
-	hdr->magic = OF_DT_HEADER;
-	hdr->totalsize = RELOC(dt_struct_end) - RELOC(dt_header_start);
-	hdr->off_dt_struct = RELOC(dt_struct_start) - RELOC(dt_header_start);
-	hdr->off_dt_strings = RELOC(dt_string_start) - RELOC(dt_header_start);
-	hdr->dt_strings_size = RELOC(dt_string_end) - RELOC(dt_string_start);
-	hdr->off_mem_rsvmap = ((unsigned long)rsvmap) - RELOC(dt_header_start);
-	hdr->version = OF_DT_VERSION;
-	/* Version 16 is not backward compatible */
-	hdr->last_comp_version = 0x10;
-
-	/* Reserve the whole thing and copy the reserve map in, we
-	 * also bump mem_reserve_cnt to cause further reservations to
-	 * fail since it's too late.
-	 */
-	reserve_mem(RELOC(dt_header_start), hdr->totalsize);
-	memcpy(rsvmap, RELOC(mem_reserve_map), sizeof(mem_reserve_map));
-
-#ifdef DEBUG_PROM
-	{
-		int i;
-		prom_printf("reserved memory map:\n");
-		for (i = 0; i < RELOC(mem_reserve_cnt); i++)
-			prom_printf("  %x - %x\n", RELOC(mem_reserve_map)[i].base,
-				    RELOC(mem_reserve_map)[i].size);
-	}
-#endif
-	RELOC(mem_reserve_cnt) = MEM_RESERVE_MAP_SIZE;
-
-	prom_printf("Device tree strings 0x%x -> 0x%x\n",
-		    RELOC(dt_string_start), RELOC(dt_string_end)); 
-	prom_printf("Device tree struct  0x%x -> 0x%x\n",
-		    RELOC(dt_struct_start), RELOC(dt_struct_end));
-
-}
-
-
-static void __init fixup_device_tree(void)
-{
-	unsigned long offset = reloc_offset();
-	phandle u3, i2c, mpic;
-	u32 u3_rev;
-	u32 interrupts[2];
-	u32 parent;
-
-	/* Some G5s have a missing interrupt definition, fix it up here */
-	u3 = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000"));
-	if (!PHANDLE_VALID(u3))
-		return;
-	i2c = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/i2c@f8001000"));
-	if (!PHANDLE_VALID(i2c))
-		return;
-	mpic = call_prom("finddevice", 1, 1, ADDR("/u3@0,f8000000/mpic@f8040000"));
-	if (!PHANDLE_VALID(mpic))
-		return;
-
-	/* check if proper rev of u3 */
-	if (prom_getprop(u3, "device-rev", &u3_rev, sizeof(u3_rev))
-	    == PROM_ERROR)
-		return;
-	if (u3_rev < 0x35 || u3_rev > 0x39)
-		return;
-	/* does it need fixup ? */
-	if (prom_getproplen(i2c, "interrupts") > 0)
-		return;
-
-	prom_printf("fixing up bogus interrupts for u3 i2c...\n");
-
-	/* interrupt on this revision of u3 is number 0 and level */
-	interrupts[0] = 0;
-	interrupts[1] = 1;
-	prom_setprop(i2c, "interrupts", &interrupts, sizeof(interrupts));
-	parent = (u32)mpic;
-	prom_setprop(i2c, "interrupt-parent", &parent, sizeof(parent));
-}
-
-
-static void __init prom_find_boot_cpu(void)
-{
-	unsigned long offset = reloc_offset();
-       	struct prom_t *_prom = PTRRELOC(&prom);
-	u32 getprop_rval;
-	ihandle prom_cpu;
-	phandle cpu_pkg;
-
-	if (prom_getprop(_prom->chosen, "cpu", &prom_cpu, sizeof(prom_cpu)) <= 0)
-		prom_panic("cannot find boot cpu");
-
-	cpu_pkg = call_prom("instance-to-package", 1, 1, prom_cpu);
-
-	prom_getprop(cpu_pkg, "reg", &getprop_rval, sizeof(getprop_rval));
-	_prom->cpu = getprop_rval;
-
-	prom_debug("Booting CPU hw index = 0x%x\n", _prom->cpu);
-}
-
-static void __init prom_check_initrd(unsigned long r3, unsigned long r4)
-{
-#ifdef CONFIG_BLK_DEV_INITRD
-	unsigned long offset = reloc_offset();
-       	struct prom_t *_prom = PTRRELOC(&prom);
-
-	if ( r3 && r4 && r4 != 0xdeadbeef) {
-		u64 val;
-
-		RELOC(prom_initrd_start) = (r3 >= KERNELBASE) ? __pa(r3) : r3;
-		RELOC(prom_initrd_end) = RELOC(prom_initrd_start) + r4;
-
-		val = (u64)RELOC(prom_initrd_start);
-		prom_setprop(_prom->chosen, "linux,initrd-start", &val, sizeof(val));
-		val = (u64)RELOC(prom_initrd_end);
-		prom_setprop(_prom->chosen, "linux,initrd-end", &val, sizeof(val));
-
-		reserve_mem(RELOC(prom_initrd_start),
-			    RELOC(prom_initrd_end) - RELOC(prom_initrd_start));
-
-		prom_debug("initrd_start=0x%x\n", RELOC(prom_initrd_start));
-		prom_debug("initrd_end=0x%x\n", RELOC(prom_initrd_end));
-	}
-#endif /* CONFIG_BLK_DEV_INITRD */
-}
-
-/*
- * We enter here early on, when the Open Firmware prom is still
- * handling exceptions and the MMU hash table for us.
- */
-
-unsigned long __init prom_init(unsigned long r3, unsigned long r4, unsigned long pp,
-			       unsigned long r6, unsigned long r7)
-{	
-	unsigned long offset = reloc_offset();
-       	struct prom_t *_prom = PTRRELOC(&prom);
-	unsigned long phys = KERNELBASE - offset;
-	u32 getprop_rval;
-	
-	/*
-	 * First zero the BSS
-	 */
-	memset(PTRRELOC(&__bss_start), 0, __bss_stop - __bss_start);
-
-	/*
-	 * Init interface to Open Firmware, get some node references,
-	 * like /chosen
-	 */
-	prom_init_client_services(pp);
-
-	/*
-	 * Init prom stdout device
-	 */
-	prom_init_stdout();
-	prom_debug("klimit=0x%x\n", RELOC(klimit));
-	prom_debug("offset=0x%x\n", offset);
-
-	/*
-	 * Check for an initrd
-	 */
-	prom_check_initrd(r3, r4);
-
-	/*
-	 * Get default machine type. At this point, we do not differenciate
-	 * between pSeries SMP and pSeries LPAR
-	 */
-	RELOC(of_platform) = prom_find_machine_type();
-	getprop_rval = RELOC(of_platform);
-	prom_setprop(_prom->chosen, "linux,platform",
-		     &getprop_rval, sizeof(getprop_rval));
-
-	/*
-	 * On pSeries, inform the firmware about our capabilities
-	 */
-	if (RELOC(of_platform) == PLATFORM_PSERIES ||
-	    RELOC(of_platform) == PLATFORM_PSERIES_LPAR)
-		prom_send_capabilities();
-
-	/*
-	 * On pSeries and Cell, copy the CPU hold code
-	 */
-       	if (RELOC(of_platform) & (PLATFORM_PSERIES | PLATFORM_CELL))
-       		copy_and_flush(0, KERNELBASE - offset, 0x100, 0);
-
-	/*
-	 * Get memory cells format
-	 */
-	getprop_rval = 1;
-	prom_getprop(_prom->root, "#size-cells",
-		     &getprop_rval, sizeof(getprop_rval));
-	_prom->root_size_cells = getprop_rval;
-	getprop_rval = 2;
-	prom_getprop(_prom->root, "#address-cells",
-		     &getprop_rval, sizeof(getprop_rval));
-	_prom->root_addr_cells = getprop_rval;
-
-	/*
-	 * Do early parsing of command line
-	 */
-	early_cmdline_parse();
-
-	/*
-	 * Initialize memory management within prom_init
-	 */
-	prom_init_mem();
-
-	/*
-	 * Determine which cpu is actually running right _now_
-	 */
-	prom_find_boot_cpu();
-
-	/* 
-	 * Initialize display devices
-	 */
-	prom_check_displays();
-
-	/*
-	 * Initialize IOMMU (TCE tables) on pSeries. Do that before anything else
-	 * that uses the allocator, we need to make sure we get the top of memory
-	 * available for us here...
-	 */
-	if (RELOC(of_platform) == PLATFORM_PSERIES)
-		prom_initialize_tce_table();
-
-	/*
-	 * On non-powermacs, try to instantiate RTAS and puts all CPUs
-	 * in spin-loops. PowerMacs don't have a working RTAS and use
-	 * a different way to spin CPUs
-	 */
-	if (RELOC(of_platform) != PLATFORM_POWERMAC) {
-		prom_instantiate_rtas();
-		prom_hold_cpus();
-	}
-
-	/*
-	 * Fill in some infos for use by the kernel later on
-	 */
-	if (RELOC(ppc64_iommu_off))
-		prom_setprop(_prom->chosen, "linux,iommu-off", NULL, 0);
-
-	if (RELOC(iommu_force_on))
-		prom_setprop(_prom->chosen, "linux,iommu-force-on", NULL, 0);
-
-	if (RELOC(prom_memory_limit))
-		prom_setprop(_prom->chosen, "linux,memory-limit",
-			PTRRELOC(&prom_memory_limit), sizeof(RELOC(prom_memory_limit)));
-
-	if (RELOC(prom_tce_alloc_start)) {
-		prom_setprop(_prom->chosen, "linux,tce-alloc-start",
-			PTRRELOC(&prom_tce_alloc_start), sizeof(RELOC(prom_tce_alloc_start)));
-		prom_setprop(_prom->chosen, "linux,tce-alloc-end",
-			PTRRELOC(&prom_tce_alloc_end), sizeof(RELOC(prom_tce_alloc_end)));
-	}
-
-	/*
-	 * Fixup any known bugs in the device-tree
-	 */
-	fixup_device_tree();
-
-	/*
-	 * Now finally create the flattened device-tree
-	 */
-       	prom_printf("copying OF device tree ...\n");
-       	flatten_device_tree();
-
-	/* in case stdin is USB and still active on IBM machines... */
-	prom_close_stdin();
-
-	/*
-	 * Call OF "quiesce" method to shut down pending DMA's from
-	 * devices etc...
-	 */
-	prom_printf("Calling quiesce ...\n");
-	call_prom("quiesce", 0, 0);
-
-	/*
-	 * And finally, call the kernel passing it the flattened device
-	 * tree and NULL as r5, thus triggering the new entry point which
-	 * is common to us and kexec
-	 */
-	prom_printf("returning from prom_init\n");
-	prom_debug("->dt_header_start=0x%x\n", RELOC(dt_header_start));
-	prom_debug("->phys=0x%x\n", phys);
-
-	__start(RELOC(dt_header_start), phys, 0);
-
-	return 0;
-}
-

arch/ppc64/kernel/semaphore.c

@@ -1,136 +0,0 @@
-/*
- * 
- *
- * PowerPC-specific semaphore code.
- *
- * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- * April 2001 - Reworked by Paul Mackerras <paulus@samba.org>
- * to eliminate the SMP races in the old version between the updates
- * of `count' and `waking'.  Now we use negative `count' values to
- * indicate that some process(es) are waiting for the semaphore.
- */
-
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <asm/atomic.h>
-#include <asm/semaphore.h>
-#include <asm/errno.h>
-
-/*
- * Atomically update sem->count.
- * This does the equivalent of the following:
- *
- *	old_count = sem->count;
- *	tmp = MAX(old_count, 0) + incr;
- *	sem->count = tmp;
- *	return old_count;
- */
-static inline int __sem_update_count(struct semaphore *sem, int incr)
-{
-	int old_count, tmp;
-
-	__asm__ __volatile__("\n"
-"1:	lwarx	%0,0,%3\n"
-"	srawi	%1,%0,31\n"
-"	andc	%1,%0,%1\n"
-"	add	%1,%1,%4\n"
-"	stwcx.	%1,0,%3\n"
-"	bne	1b"
-	: "=&r" (old_count), "=&r" (tmp), "=m" (sem->count)
-	: "r" (&sem->count), "r" (incr), "m" (sem->count)
-	: "cc");
-
-	return old_count;
-}
-
-void __up(struct semaphore *sem)
-{
-	/*
-	 * Note that we incremented count in up() before we came here,
-	 * but that was ineffective since the result was <= 0, and
-	 * any negative value of count is equivalent to 0.
-	 * This ends up setting count to 1, unless count is now > 0
-	 * (i.e. because some other cpu has called up() in the meantime),
-	 * in which case we just increment count.
-	 */
-	__sem_update_count(sem, 1);
-	wake_up(&sem->wait);
-}
-EXPORT_SYMBOL(__up);
-
-/*
- * Note that when we come in to __down or __down_interruptible,
- * we have already decremented count, but that decrement was
- * ineffective since the result was < 0, and any negative value
- * of count is equivalent to 0.
- * Thus it is only when we decrement count from some value > 0
- * that we have actually got the semaphore.
- */
-void __sched __down(struct semaphore *sem)
-{
-	struct task_struct *tsk = current;
-	DECLARE_WAITQUEUE(wait, tsk);
-
-	__set_task_state(tsk, TASK_UNINTERRUPTIBLE);
-	add_wait_queue_exclusive(&sem->wait, &wait);
-
-	/*
-	 * Try to get the semaphore.  If the count is > 0, then we've
-	 * got the semaphore; we decrement count and exit the loop.
-	 * If the count is 0 or negative, we set it to -1, indicating
-	 * that we are asleep, and then sleep.
-	 */
-	while (__sem_update_count(sem, -1) <= 0) {
-		schedule();
-		set_task_state(tsk, TASK_UNINTERRUPTIBLE);
-	}
-	remove_wait_queue(&sem->wait, &wait);
-	__set_task_state(tsk, TASK_RUNNING);
-
-	/*
-	 * If there are any more sleepers, wake one of them up so
-	 * that it can either get the semaphore, or set count to -1
-	 * indicating that there are still processes sleeping.
-	 */
-	wake_up(&sem->wait);
-}
-EXPORT_SYMBOL(__down);
-
-int __sched __down_interruptible(struct semaphore * sem)
-{
-	int retval = 0;
-	struct task_struct *tsk = current;
-	DECLARE_WAITQUEUE(wait, tsk);
-
-	__set_task_state(tsk, TASK_INTERRUPTIBLE);
-	add_wait_queue_exclusive(&sem->wait, &wait);
-
-	while (__sem_update_count(sem, -1) <= 0) {
-		if (signal_pending(current)) {
-			/*
-			 * A signal is pending - give up trying.
-			 * Set sem->count to 0 if it is negative,
-			 * since we are no longer sleeping.
-			 */
-			__sem_update_count(sem, 0);
-			retval = -EINTR;
-			break;
-		}
-		schedule();
-		set_task_state(tsk, TASK_INTERRUPTIBLE);
-	}
-	remove_wait_queue(&sem->wait, &wait);
-	__set_task_state(tsk, TASK_RUNNING);
-
-	wake_up(&sem->wait);
-	return retval;
-}
-EXPORT_SYMBOL(__down_interruptible);

arch/ppc64/kernel/vdso.c

@@ -1,625 +0,0 @@
-/*
- *  linux/arch/ppc64/kernel/vdso.c
- *
- *    Copyright (C) 2004 Benjamin Herrenschmidt, IBM Corp.
- *			 <benh@kernel.crashing.org>
- *
- *  This program is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU General Public License
- *  as published by the Free Software Foundation; either version
- *  2 of the License, or (at your option) any later version.
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/stddef.h>
-#include <linux/unistd.h>
-#include <linux/slab.h>
-#include <linux/user.h>
-#include <linux/elf.h>
-#include <linux/security.h>
-#include <linux/bootmem.h>
-
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/processor.h>
-#include <asm/mmu.h>
-#include <asm/mmu_context.h>
-#include <asm/machdep.h>
-#include <asm/cputable.h>
-#include <asm/sections.h>
-#include <asm/systemcfg.h>
-#include <asm/vdso.h>
-
-#undef DEBUG
-
-#ifdef DEBUG
-#define DBG(fmt...) printk(fmt)
-#else
-#define DBG(fmt...)
-#endif
-
-
-/*
- * The vDSOs themselves are here
- */
-extern char vdso64_start, vdso64_end;
-extern char vdso32_start, vdso32_end;
-
-static void *vdso64_kbase = &vdso64_start;
-static void *vdso32_kbase = &vdso32_start;
-
-unsigned int vdso64_pages;
-unsigned int vdso32_pages;
-
-/* Signal trampolines user addresses */
-
-unsigned long vdso64_rt_sigtramp;
-unsigned long vdso32_sigtramp;
-unsigned long vdso32_rt_sigtramp;
-
-/* Format of the patch table */
-struct vdso_patch_def
-{
-	u32		pvr_mask, pvr_value;
-	const char	*gen_name;
-	const char	*fix_name;
-};
-
-/* Table of functions to patch based on the CPU type/revision
- *
- * TODO: Improve by adding whole lists for each entry
- */
-static struct vdso_patch_def vdso_patches[] = {
-	{
-		0xffff0000, 0x003a0000,		/* POWER5 */
-		"__kernel_sync_dicache", "__kernel_sync_dicache_p5"
-	},
-	{
-		0xffff0000, 0x003b0000,		/* POWER5 */
-		"__kernel_sync_dicache", "__kernel_sync_dicache_p5"
-	},
-};
-
-/*
- * Some infos carried around for each of them during parsing at
- * boot time.
- */
-struct lib32_elfinfo
-{
-	Elf32_Ehdr	*hdr;		/* ptr to ELF */
-	Elf32_Sym	*dynsym;	/* ptr to .dynsym section */
-	unsigned long	dynsymsize;	/* size of .dynsym section */
-	char		*dynstr;	/* ptr to .dynstr section */
-	unsigned long	text;		/* offset of .text section in .so */
-};
-
-struct lib64_elfinfo
-{
-	Elf64_Ehdr	*hdr;
-	Elf64_Sym	*dynsym;
-	unsigned long	dynsymsize;
-	char		*dynstr;
-	unsigned long	text;
-};
-
-
-#ifdef __DEBUG
-static void dump_one_vdso_page(struct page *pg, struct page *upg)
-{
-	printk("kpg: %p (c:%d,f:%08lx)", __va(page_to_pfn(pg) << PAGE_SHIFT),
-	       page_count(pg),
-	       pg->flags);
-	if (upg/* && pg != upg*/) {
-		printk(" upg: %p (c:%d,f:%08lx)", __va(page_to_pfn(upg) << PAGE_SHIFT),
-		       page_count(upg),
-		       upg->flags);
-	}
-	printk("\n");
-}
-
-static void dump_vdso_pages(struct vm_area_struct * vma)
-{
-	int i;
-
-	if (!vma || test_thread_flag(TIF_32BIT)) {
-		printk("vDSO32 @ %016lx:\n", (unsigned long)vdso32_kbase);
-		for (i=0; i<vdso32_pages; i++) {
-			struct page *pg = virt_to_page(vdso32_kbase + i*PAGE_SIZE);
-			struct page *upg = (vma && vma->vm_mm) ?
-				follow_page(vma->vm_mm, vma->vm_start + i*PAGE_SIZE, 0)
-				: NULL;
-			dump_one_vdso_page(pg, upg);
-		}
-	}
-	if (!vma || !test_thread_flag(TIF_32BIT)) {
-		printk("vDSO64 @ %016lx:\n", (unsigned long)vdso64_kbase);
-		for (i=0; i<vdso64_pages; i++) {
-			struct page *pg = virt_to_page(vdso64_kbase + i*PAGE_SIZE);
-			struct page *upg = (vma && vma->vm_mm) ?
-				follow_page(vma->vm_mm, vma->vm_start + i*PAGE_SIZE, 0)
-				: NULL;
-			dump_one_vdso_page(pg, upg);
-		}
-	}
-}
-#endif /* DEBUG */
-
-/*
- * Keep a dummy vma_close for now, it will prevent VMA merging.
- */
-static void vdso_vma_close(struct vm_area_struct * vma)
-{
-}
-
-/*
- * Our nopage() function, maps in the actual vDSO kernel pages, they will
- * be mapped read-only by do_no_page(), and eventually COW'ed, either
- * right away for an initial write access, or by do_wp_page().
- */
-static struct page * vdso_vma_nopage(struct vm_area_struct * vma,
-				     unsigned long address, int *type)
-{
-	unsigned long offset = address - vma->vm_start;
-	struct page *pg;
-	void *vbase = test_thread_flag(TIF_32BIT) ? vdso32_kbase : vdso64_kbase;
-
-	DBG("vdso_vma_nopage(current: %s, address: %016lx, off: %lx)\n",
-	    current->comm, address, offset);
-
-	if (address < vma->vm_start || address > vma->vm_end)
-		return NOPAGE_SIGBUS;
-
-	/*
-	 * Last page is systemcfg.
-	 */
-	if ((vma->vm_end - address) <= PAGE_SIZE)
-		pg = virt_to_page(_systemcfg);
-	else
-		pg = virt_to_page(vbase + offset);
-
-	get_page(pg);
-	DBG(" ->page count: %d\n", page_count(pg));
-
-	return pg;
-}
-
-static struct vm_operations_struct vdso_vmops = {
-	.close	= vdso_vma_close,
-	.nopage	= vdso_vma_nopage,
-};
-
-/*
- * This is called from binfmt_elf, we create the special vma for the
- * vDSO and insert it into the mm struct tree
- */
-int arch_setup_additional_pages(struct linux_binprm *bprm, int executable_stack)
-{
-	struct mm_struct *mm = current->mm;
-	struct vm_area_struct *vma;
-	unsigned long vdso_pages;
-	unsigned long vdso_base;
-
-	if (test_thread_flag(TIF_32BIT)) {
-		vdso_pages = vdso32_pages;
-		vdso_base = VDSO32_MBASE;
-	} else {
-		vdso_pages = vdso64_pages;
-		vdso_base = VDSO64_MBASE;
-	}
-
-	current->thread.vdso_base = 0;
-
-	/* vDSO has a problem and was disabled, just don't "enable" it for the
-	 * process
-	 */
-	if (vdso_pages == 0)
-		return 0;
-
-	vma = kmem_cache_alloc(vm_area_cachep, SLAB_KERNEL);
-	if (vma == NULL)
-		return -ENOMEM;
-
-	memset(vma, 0, sizeof(*vma));
-
-	/*
-	 * pick a base address for the vDSO in process space. We try to put it
-	 * at vdso_base which is the "natural" base for it, but we might fail
-	 * and end up putting it elsewhere.
-	 */
-	vdso_base = get_unmapped_area(NULL, vdso_base,
-				      vdso_pages << PAGE_SHIFT, 0, 0);
-	if (vdso_base & ~PAGE_MASK) {
-		kmem_cache_free(vm_area_cachep, vma);
-		return (int)vdso_base;
-	}
-
-	current->thread.vdso_base = vdso_base;
-
-	vma->vm_mm = mm;
-	vma->vm_start = current->thread.vdso_base;
-
-	/*
-	 * the VMA size is one page more than the vDSO since systemcfg
-	 * is mapped in the last one
-	 */
-	vma->vm_end = vma->vm_start + ((vdso_pages + 1) << PAGE_SHIFT);
-
-	/*
-	 * our vma flags don't have VM_WRITE so by default, the process isn't allowed
-	 * to write those pages.
-	 * gdb can break that with ptrace interface, and thus trigger COW on those
-	 * pages but it's then your responsibility to never do that on the "data" page
-	 * of the vDSO or you'll stop getting kernel updates and your nice userland
-	 * gettimeofday will be totally dead. It's fine to use that for setting
-	 * breakpoints in the vDSO code pages though
-	 */
-	vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC | VM_RESERVED;
-	vma->vm_flags |= mm->def_flags;
-	vma->vm_page_prot = protection_map[vma->vm_flags & 0x7];
-	vma->vm_ops = &vdso_vmops;
-
-	down_write(&mm->mmap_sem);
-	if (insert_vm_struct(mm, vma)) {
-		up_write(&mm->mmap_sem);
-		kmem_cache_free(vm_area_cachep, vma);
-		return -ENOMEM;
-	}
-	mm->total_vm += (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
-	up_write(&mm->mmap_sem);
-
-	return 0;
-}
-
-static void * __init find_section32(Elf32_Ehdr *ehdr, const char *secname,
-				  unsigned long *size)
-{
-	Elf32_Shdr *sechdrs;
-	unsigned int i;
-	char *secnames;
-
-	/* Grab section headers and strings so we can tell who is who */
-	sechdrs = (void *)ehdr + ehdr->e_shoff;
-	secnames = (void *)ehdr + sechdrs[ehdr->e_shstrndx].sh_offset;
-
-	/* Find the section they want */
-	for (i = 1; i < ehdr->e_shnum; i++) {
-		if (strcmp(secnames+sechdrs[i].sh_name, secname) == 0) {
-			if (size)
-				*size = sechdrs[i].sh_size;
-			return (void *)ehdr + sechdrs[i].sh_offset;
-		}
-	}
-	*size = 0;
-	return NULL;
-}
-
-static void * __init find_section64(Elf64_Ehdr *ehdr, const char *secname,
-				  unsigned long *size)
-{
-	Elf64_Shdr *sechdrs;
-	unsigned int i;
-	char *secnames;
-
-	/* Grab section headers and strings so we can tell who is who */
-	sechdrs = (void *)ehdr + ehdr->e_shoff;
-	secnames = (void *)ehdr + sechdrs[ehdr->e_shstrndx].sh_offset;
-
-	/* Find the section they want */
-	for (i = 1; i < ehdr->e_shnum; i++) {
-		if (strcmp(secnames+sechdrs[i].sh_name, secname) == 0) {
-			if (size)
-				*size = sechdrs[i].sh_size;
-			return (void *)ehdr + sechdrs[i].sh_offset;
-		}
-	}
-	if (size)
-		*size = 0;
-	return NULL;
-}
-
-static Elf32_Sym * __init find_symbol32(struct lib32_elfinfo *lib, const char *symname)
-{
-	unsigned int i;
-	char name[32], *c;
-
-	for (i = 0; i < (lib->dynsymsize / sizeof(Elf32_Sym)); i++) {
-		if (lib->dynsym[i].st_name == 0)
-			continue;
-		strlcpy(name, lib->dynstr + lib->dynsym[i].st_name, 32);
-		c = strchr(name, '@');
-		if (c)
-			*c = 0;
-		if (strcmp(symname, name) == 0)
-			return &lib->dynsym[i];
-	}
-	return NULL;
-}
-
-static Elf64_Sym * __init find_symbol64(struct lib64_elfinfo *lib, const char *symname)
-{
-	unsigned int i;
-	char name[32], *c;
-
-	for (i = 0; i < (lib->dynsymsize / sizeof(Elf64_Sym)); i++) {
-		if (lib->dynsym[i].st_name == 0)
-			continue;
-		strlcpy(name, lib->dynstr + lib->dynsym[i].st_name, 32);
-		c = strchr(name, '@');
-		if (c)
-			*c = 0;
-		if (strcmp(symname, name) == 0)
-			return &lib->dynsym[i];
-	}
-	return NULL;
-}
-
-/* Note that we assume the section is .text and the symbol is relative to
- * the library base
- */
-static unsigned long __init find_function32(struct lib32_elfinfo *lib, const char *symname)
-{
-	Elf32_Sym *sym = find_symbol32(lib, symname);
-
-	if (sym == NULL) {
-		printk(KERN_WARNING "vDSO32: function %s not found !\n", symname);
-		return 0;
-	}
-	return sym->st_value - VDSO32_LBASE;
-}
-
-/* Note that we assume the section is .text and the symbol is relative to
- * the library base
- */
-static unsigned long __init find_function64(struct lib64_elfinfo *lib, const char *symname)
-{
-	Elf64_Sym *sym = find_symbol64(lib, symname);
-
-	if (sym == NULL) {
-		printk(KERN_WARNING "vDSO64: function %s not found !\n", symname);
-		return 0;
-	}
-#ifdef VDS64_HAS_DESCRIPTORS
-	return *((u64 *)(vdso64_kbase + sym->st_value - VDSO64_LBASE)) - VDSO64_LBASE;
-#else
-	return sym->st_value - VDSO64_LBASE;
-#endif
-}
-
-
-static __init int vdso_do_find_sections(struct lib32_elfinfo *v32,
-					struct lib64_elfinfo *v64)
-{
-	void *sect;
-
-	/*
-	 * Locate symbol tables & text section
-	 */
-
-	v32->dynsym = find_section32(v32->hdr, ".dynsym", &v32->dynsymsize);
-	v32->dynstr = find_section32(v32->hdr, ".dynstr", NULL);
-	if (v32->dynsym == NULL || v32->dynstr == NULL) {
-		printk(KERN_ERR "vDSO32: a required symbol section was not found\n");
-		return -1;
-	}
-	sect = find_section32(v32->hdr, ".text", NULL);
-	if (sect == NULL) {
-		printk(KERN_ERR "vDSO32: the .text section was not found\n");
-		return -1;
-	}
-	v32->text = sect - vdso32_kbase;
-
-	v64->dynsym = find_section64(v64->hdr, ".dynsym", &v64->dynsymsize);
-	v64->dynstr = find_section64(v64->hdr, ".dynstr", NULL);
-	if (v64->dynsym == NULL || v64->dynstr == NULL) {
-		printk(KERN_ERR "vDSO64: a required symbol section was not found\n");
-		return -1;
-	}
-	sect = find_section64(v64->hdr, ".text", NULL);
-	if (sect == NULL) {
-		printk(KERN_ERR "vDSO64: the .text section was not found\n");
-		return -1;
-	}
-	v64->text = sect - vdso64_kbase;
-
-	return 0;
-}
-
-static __init void vdso_setup_trampolines(struct lib32_elfinfo *v32,
-					  struct lib64_elfinfo *v64)
-{
-	/*
-	 * Find signal trampolines
-	 */
-
-	vdso64_rt_sigtramp	= find_function64(v64, "__kernel_sigtramp_rt64");
-	vdso32_sigtramp		= find_function32(v32, "__kernel_sigtramp32");
-	vdso32_rt_sigtramp	= find_function32(v32, "__kernel_sigtramp_rt32");
-}
-
-static __init int vdso_fixup_datapage(struct lib32_elfinfo *v32,
-				       struct lib64_elfinfo *v64)
-{
-	Elf32_Sym *sym32;
-	Elf64_Sym *sym64;
-
-	sym32 = find_symbol32(v32, "__kernel_datapage_offset");
-	if (sym32 == NULL) {
-		printk(KERN_ERR "vDSO32: Can't find symbol __kernel_datapage_offset !\n");
-		return -1;
-	}
-	*((int *)(vdso32_kbase + (sym32->st_value - VDSO32_LBASE))) =
-		(vdso32_pages << PAGE_SHIFT) - (sym32->st_value - VDSO32_LBASE);
-
-       	sym64 = find_symbol64(v64, "__kernel_datapage_offset");
-	if (sym64 == NULL) {
-		printk(KERN_ERR "vDSO64: Can't find symbol __kernel_datapage_offset !\n");
-		return -1;
-	}
-	*((int *)(vdso64_kbase + sym64->st_value - VDSO64_LBASE)) =
-		(vdso64_pages << PAGE_SHIFT) - (sym64->st_value - VDSO64_LBASE);
-
-	return 0;
-}
-
-static int vdso_do_func_patch32(struct lib32_elfinfo *v32,
-				struct lib64_elfinfo *v64,
-				const char *orig, const char *fix)
-{
-	Elf32_Sym *sym32_gen, *sym32_fix;
-
-	sym32_gen = find_symbol32(v32, orig);
-	if (sym32_gen == NULL) {
-		printk(KERN_ERR "vDSO32: Can't find symbol %s !\n", orig);
-		return -1;
-	}
-	sym32_fix = find_symbol32(v32, fix);
-	if (sym32_fix == NULL) {
-		printk(KERN_ERR "vDSO32: Can't find symbol %s !\n", fix);
-		return -1;
-	}
-	sym32_gen->st_value = sym32_fix->st_value;
-	sym32_gen->st_size = sym32_fix->st_size;
-	sym32_gen->st_info = sym32_fix->st_info;
-	sym32_gen->st_other = sym32_fix->st_other;
-	sym32_gen->st_shndx = sym32_fix->st_shndx;
-
-	return 0;
-}
-
-static int vdso_do_func_patch64(struct lib32_elfinfo *v32,
-				struct lib64_elfinfo *v64,
-				const char *orig, const char *fix)
-{
-	Elf64_Sym *sym64_gen, *sym64_fix;
-
-	sym64_gen = find_symbol64(v64, orig);
-	if (sym64_gen == NULL) {
-		printk(KERN_ERR "vDSO64: Can't find symbol %s !\n", orig);
-		return -1;
-	}
-	sym64_fix = find_symbol64(v64, fix);
-	if (sym64_fix == NULL) {
-		printk(KERN_ERR "vDSO64: Can't find symbol %s !\n", fix);
-		return -1;
-	}
-	sym64_gen->st_value = sym64_fix->st_value;
-	sym64_gen->st_size = sym64_fix->st_size;
-	sym64_gen->st_info = sym64_fix->st_info;
-	sym64_gen->st_other = sym64_fix->st_other;
-	sym64_gen->st_shndx = sym64_fix->st_shndx;
-
-	return 0;
-}
-
-static __init int vdso_fixup_alt_funcs(struct lib32_elfinfo *v32,
-				       struct lib64_elfinfo *v64)
-{
-	u32 pvr;
-	int i;
-
-	pvr = mfspr(SPRN_PVR);
-	for (i = 0; i < ARRAY_SIZE(vdso_patches); i++) {
-		struct vdso_patch_def *patch = &vdso_patches[i];
-		int match = (pvr & patch->pvr_mask) == patch->pvr_value;
-
-		DBG("patch %d (mask: %x, pvr: %x) : %s\n",
-		    i, patch->pvr_mask, patch->pvr_value, match ? "match" : "skip");
-
-		if (!match)
-			continue;
-
-		DBG("replacing %s with %s...\n", patch->gen_name, patch->fix_name);
-
-		/*
-		 * Patch the 32 bits and 64 bits symbols. Note that we do not patch
-		 * the "." symbol on 64 bits. It would be easy to do, but doesn't
-		 * seem to be necessary, patching the OPD symbol is enough.
-		 */
-		vdso_do_func_patch32(v32, v64, patch->gen_name, patch->fix_name);
-		vdso_do_func_patch64(v32, v64, patch->gen_name, patch->fix_name);
-	}
-
-	return 0;
-}
-
-
-static __init int vdso_setup(void)
-{
-	struct lib32_elfinfo	v32;
-	struct lib64_elfinfo	v64;
-
-	v32.hdr = vdso32_kbase;
-	v64.hdr = vdso64_kbase;
-
-	if (vdso_do_find_sections(&v32, &v64))
-		return -1;
-
-	if (vdso_fixup_datapage(&v32, &v64))
-		return -1;
-
-	if (vdso_fixup_alt_funcs(&v32, &v64))
-		return -1;
-
-	vdso_setup_trampolines(&v32, &v64);
-
-	return 0;
-}
-
-void __init vdso_init(void)
-{
-	int i;
-
-	vdso64_pages = (&vdso64_end - &vdso64_start) >> PAGE_SHIFT;
-	vdso32_pages = (&vdso32_end - &vdso32_start) >> PAGE_SHIFT;
-
-	DBG("vdso64_kbase: %p, 0x%x pages, vdso32_kbase: %p, 0x%x pages\n",
-	       vdso64_kbase, vdso64_pages, vdso32_kbase, vdso32_pages);
-
-	/*
-	 * Initialize the vDSO images in memory, that is do necessary
-	 * fixups of vDSO symbols, locate trampolines, etc...
-	 */
-	if (vdso_setup()) {
-		printk(KERN_ERR "vDSO setup failure, not enabled !\n");
-		/* XXX should free pages here ? */
-		vdso64_pages = vdso32_pages = 0;
-		return;
-	}
-
-	/* Make sure pages are in the correct state */
-	for (i = 0; i < vdso64_pages; i++) {
-		struct page *pg = virt_to_page(vdso64_kbase + i*PAGE_SIZE);
-		ClearPageReserved(pg);
-		get_page(pg);
-	}
-	for (i = 0; i < vdso32_pages; i++) {
-		struct page *pg = virt_to_page(vdso32_kbase + i*PAGE_SIZE);
-		ClearPageReserved(pg);
-		get_page(pg);
-	}
-
-	get_page(virt_to_page(_systemcfg));
-}
-
-int in_gate_area_no_task(unsigned long addr)
-{
-	return 0;
-}
-
-int in_gate_area(struct task_struct *task, unsigned long addr)
-{
-	return 0;
-}
-
-struct vm_area_struct *get_gate_vma(struct task_struct *tsk)
-{
-	return NULL;
-}
-

arch/ppc64/kernel/vmlinux.lds.S

@@ -1,151 +0,0 @@
-#include <asm/page.h>
-#include <asm-generic/vmlinux.lds.h>
-
-OUTPUT_ARCH(powerpc:common64)
-jiffies = jiffies_64;
-SECTIONS
-{
-  /* Sections to be discarded. */
-  /DISCARD/ : {
-	*(.exitcall.exit)
-	}
-
-
-  /* Read-only sections, merged into text segment: */
-  .text : {
-	*(.text .text.*)
-	SCHED_TEXT
-	LOCK_TEXT
-	KPROBES_TEXT
-	*(.fixup)
-	. = ALIGN(PAGE_SIZE);
-	_etext = .;
-	}
-
-  __ex_table : {
-	__start___ex_table = .;
-	*(__ex_table)
-	__stop___ex_table = .;
-	}
-
-  __bug_table : {
-	__start___bug_table = .;
-	*(__bug_table)
-	__stop___bug_table = .;
-	}
-
-  __ftr_fixup : {
-	__start___ftr_fixup = .;
-	*(__ftr_fixup)
-	__stop___ftr_fixup = .;
-	}
-
-  RODATA
-
-
-  /* will be freed after init */
-  . = ALIGN(PAGE_SIZE);
-  __init_begin = .;
-
-  .init.text : {
-	_sinittext = .;
-	*(.init.text)
-	_einittext = .;
-	}
-
-  .init.data : {
-	*(.init.data)
-	}
-
-  . = ALIGN(16);
-  .init.setup : {
-	__setup_start = .;
-	*(.init.setup)
-	__setup_end = .;
-	}
-
-  .initcall.init : {
-	__initcall_start = .;
-	*(.initcall1.init)
-	*(.initcall2.init)
-	*(.initcall3.init)
-	*(.initcall4.init)
-	*(.initcall5.init)
-	*(.initcall6.init)
-	*(.initcall7.init)
-	__initcall_end = .;
-	}
-
-  .con_initcall.init : {
-	__con_initcall_start = .;
-	*(.con_initcall.init)
-	__con_initcall_end = .;
-	}
-
-  SECURITY_INIT
-
-  . = ALIGN(PAGE_SIZE);
-  .init.ramfs : {
-	__initramfs_start = .;
-	*(.init.ramfs)
-	__initramfs_end = .;
-	}
-
-  .data.percpu : {
-	__per_cpu_start = .;
-	*(.data.percpu)
-	__per_cpu_end = .;
-	}
-
-  . = ALIGN(PAGE_SIZE);
-  . = ALIGN(16384);
-  __init_end = .;
-  /* freed after init ends here */
-
-
-  /* Read/write sections */
-  . = ALIGN(PAGE_SIZE);
-  . = ALIGN(16384);
-  _sdata = .;
-  /* The initial task and kernel stack */
-  .data.init_task : {
-	*(.data.init_task)
-	}
-
-  . = ALIGN(PAGE_SIZE);
-  .data.page_aligned : {
-	*(.data.page_aligned)
-	}
-
-  .data.cacheline_aligned : {
-	*(.data.cacheline_aligned)
-	}
-
-  .data : {
-	*(.data .data.rel* .toc1)
-	*(.branch_lt)
-	}
-
-  .opd : {
-	*(.opd)
-	}
-
-  .got : {
-	__toc_start = .;
-	*(.got)
-	*(.toc)
-	. = ALIGN(PAGE_SIZE);
-	_edata = .;
-	}
-
-
-  . = ALIGN(PAGE_SIZE);
-  .bss : {
-	__bss_start = .;
-	*(.bss)
-	__bss_stop = .;
-	}
-
-  . = ALIGN(PAGE_SIZE);
-  _end = . ;
-}

arch/ppc64/xmon/privinst.h

@@ -1,64 +0,0 @@
-/*
- * Copyright (C) 1996 Paul Mackerras.
- *
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- */
-
-#define GETREG(reg)		\
-    static inline unsigned long get_ ## reg (void)	\
-	{ unsigned long ret; asm volatile ("mf" #reg " %0" : "=r" (ret) :); return ret; }
-
-#define SETREG(reg)		\
-    static inline void set_ ## reg (unsigned long val)	\
-	{ asm volatile ("mt" #reg " %0" : : "r" (val)); }
-
-GETREG(msr)
-SETREG(msrd)
-GETREG(cr)
-
-#define GSETSPR(n, name)	\
-    static inline long get_ ## name (void) \
-	{ long ret; asm volatile ("mfspr %0," #n : "=r" (ret) : ); return ret; } \
-    static inline void set_ ## name (long val) \
-	{ asm volatile ("mtspr " #n ",%0" : : "r" (val)); }
-
-GSETSPR(0, mq)
-GSETSPR(1, xer)
-GSETSPR(4, rtcu)
-GSETSPR(5, rtcl)
-GSETSPR(8, lr)
-GSETSPR(9, ctr)
-GSETSPR(18, dsisr)
-GSETSPR(19, dar)
-GSETSPR(22, dec)
-GSETSPR(25, sdr1)
-GSETSPR(26, srr0)
-GSETSPR(27, srr1)
-GSETSPR(272, sprg0)
-GSETSPR(273, sprg1)
-GSETSPR(274, sprg2)
-GSETSPR(275, sprg3)
-GSETSPR(282, ear)
-GSETSPR(287, pvr)
-GSETSPR(1008, hid0)
-GSETSPR(1009, hid1)
-GSETSPR(1010, iabr)
-GSETSPR(1023, pir)
-
-static inline void store_inst(void *p)
-{
-	asm volatile ("dcbst 0,%0; sync; icbi 0,%0; isync" : : "r" (p));
-}
-
-static inline void cflush(void *p)
-{
-	asm volatile ("dcbf 0,%0; icbi 0,%0" : : "r" (p));
-}
-
-static inline void cinval(void *p)
-{
-	asm volatile ("dcbi 0,%0; icbi 0,%0" : : "r" (p));
-}

include/asm-ppc64/page.h

@@ -1,328 +0,0 @@
-#ifndef _PPC64_PAGE_H
-#define _PPC64_PAGE_H
-
-/*
- * Copyright (C) 2001 PPC64 Team, IBM Corp
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-
-#include <linux/config.h>
-#include <asm/asm-compat.h>
-
-/*
- * We support either 4k or 64k software page size. When using 64k pages
- * however, wether we are really supporting 64k pages in HW or not is
- * irrelevant to those definitions. We always define HW_PAGE_SHIFT to 12
- * as use of 64k pages remains a linux kernel specific, every notion of
- * page number shared with the firmware, TCEs, iommu, etc... still assumes
- * a page size of 4096.
- */
-#ifdef CONFIG_PPC_64K_PAGES
-#define PAGE_SHIFT		16
-#else
-#define PAGE_SHIFT		12
-#endif
-
-#define PAGE_SIZE		(ASM_CONST(1) << PAGE_SHIFT)
-#define PAGE_MASK		(~(PAGE_SIZE-1))
-
-/* HW_PAGE_SHIFT is always 4k pages */
-#define HW_PAGE_SHIFT		12
-#define HW_PAGE_SIZE		(ASM_CONST(1) << HW_PAGE_SHIFT)
-#define HW_PAGE_MASK		(~(HW_PAGE_SIZE-1))
-
-/* PAGE_FACTOR is the number of bits factor between PAGE_SHIFT and
- * HW_PAGE_SHIFT, that is 4k pages
- */
-#define PAGE_FACTOR		(PAGE_SHIFT - HW_PAGE_SHIFT)
-
-/* Segment size */
-#define SID_SHIFT       	28
-#define SID_MASK        	0xfffffffffUL
-#define ESID_MASK		0xfffffffff0000000UL
-#define GET_ESID(x)     	(((x) >> SID_SHIFT) & SID_MASK)
-
-/* Large pages size */
-
-#ifndef __ASSEMBLY__
-extern unsigned int HPAGE_SHIFT;
-#define HPAGE_SIZE		((1UL) << HPAGE_SHIFT)
-#define HPAGE_MASK		(~(HPAGE_SIZE - 1))
-#define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
-#endif /* __ASSEMBLY__ */
-
-#ifdef CONFIG_HUGETLB_PAGE
-
-
-#define HTLB_AREA_SHIFT		40
-#define HTLB_AREA_SIZE		(1UL << HTLB_AREA_SHIFT)
-#define GET_HTLB_AREA(x)	((x) >> HTLB_AREA_SHIFT)
-
-#define LOW_ESID_MASK(addr, len)    (((1U << (GET_ESID(addr+len-1)+1)) \
-	   	                      - (1U << GET_ESID(addr))) & 0xffff)
-#define HTLB_AREA_MASK(addr, len)   (((1U << (GET_HTLB_AREA(addr+len-1)+1)) \
-	   	                      - (1U << GET_HTLB_AREA(addr))) & 0xffff)
-
-#define ARCH_HAS_HUGEPAGE_ONLY_RANGE
-#define ARCH_HAS_PREPARE_HUGEPAGE_RANGE
-#define ARCH_HAS_SETCLEAR_HUGE_PTE
-
-#define touches_hugepage_low_range(mm, addr, len) \
-	(LOW_ESID_MASK((addr), (len)) & (mm)->context.low_htlb_areas)
-#define touches_hugepage_high_range(mm, addr, len) \
-	(HTLB_AREA_MASK((addr), (len)) & (mm)->context.high_htlb_areas)
-
-#define __within_hugepage_low_range(addr, len, segmask) \
-	((LOW_ESID_MASK((addr), (len)) | (segmask)) == (segmask))
-#define within_hugepage_low_range(addr, len) \
-	__within_hugepage_low_range((addr), (len), \
-				    current->mm->context.low_htlb_areas)
-#define __within_hugepage_high_range(addr, len, zonemask) \
-	((HTLB_AREA_MASK((addr), (len)) | (zonemask)) == (zonemask))
-#define within_hugepage_high_range(addr, len) \
-	__within_hugepage_high_range((addr), (len), \
-				    current->mm->context.high_htlb_areas)
-
-#define is_hugepage_only_range(mm, addr, len) \
-	(touches_hugepage_high_range((mm), (addr), (len)) || \
-	  touches_hugepage_low_range((mm), (addr), (len)))
-#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
-
-#define in_hugepage_area(context, addr) \
-	(cpu_has_feature(CPU_FTR_16M_PAGE) && \
-	 ( ((1 << GET_HTLB_AREA(addr)) & (context).high_htlb_areas) || \
-	   ( ((addr) < 0x100000000L) && \
-	     ((1 << GET_ESID(addr)) & (context).low_htlb_areas) ) ) )
-
-#else /* !CONFIG_HUGETLB_PAGE */
-
-#define in_hugepage_area(mm, addr)	0
-
-#endif /* !CONFIG_HUGETLB_PAGE */
-
-/* align addr on a size boundary - adjust address up/down if needed */
-#define _ALIGN_UP(addr,size)	(((addr)+((size)-1))&(~((size)-1)))
-#define _ALIGN_DOWN(addr,size)	((addr)&(~((size)-1)))
-
-/* align addr on a size boundary - adjust address up if needed */
-#define _ALIGN(addr,size)     _ALIGN_UP(addr,size)
-
-/* to align the pointer to the (next) page boundary */
-#define PAGE_ALIGN(addr)	_ALIGN(addr, PAGE_SIZE)
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-#include <asm/cache.h>
-
-#undef STRICT_MM_TYPECHECKS
-
-#define REGION_SIZE   4UL
-#define REGION_SHIFT  60UL
-#define REGION_MASK   (((1UL<<REGION_SIZE)-1UL)<<REGION_SHIFT)
-
-static __inline__ void clear_page(void *addr)
-{
-	unsigned long lines, line_size;
-
-	line_size = ppc64_caches.dline_size;
-	lines = ppc64_caches.dlines_per_page;
-
-	__asm__ __volatile__(
-	"mtctr  	%1	# clear_page\n\
-1:      dcbz  	0,%0\n\
-	add	%0,%0,%3\n\
-	bdnz+	1b"
-        : "=r" (addr)
-        : "r" (lines), "0" (addr), "r" (line_size)
-	: "ctr", "memory");
-}
-
-extern void copy_4K_page(void *to, void *from);
-
-#ifdef CONFIG_PPC_64K_PAGES
-static inline void copy_page(void *to, void *from)
-{
-	unsigned int i;
-	for (i=0; i < (1 << (PAGE_SHIFT - 12)); i++) {
-		copy_4K_page(to, from);
-		to += 4096;
-		from += 4096;
-	}
-}
-#else /* CONFIG_PPC_64K_PAGES */
-static inline void copy_page(void *to, void *from)
-{
-	copy_4K_page(to, from);
-}
-#endif /* CONFIG_PPC_64K_PAGES */
-
-struct page;
-extern void clear_user_page(void *page, unsigned long vaddr, struct page *pg);
-extern void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *p);
-
-#ifdef STRICT_MM_TYPECHECKS
-/*
- * These are used to make use of C type-checking.  
- * Entries in the pte table are 64b, while entries in the pgd & pmd are 32b.
- */
-
-/* PTE level */
-typedef struct { unsigned long pte; } pte_t;
-#define pte_val(x)	((x).pte)
-#define __pte(x)	((pte_t) { (x) })
-
-/* 64k pages additionally define a bigger "real PTE" type that gathers
- * the "second half" part of the PTE for pseudo 64k pages
- */
-#ifdef CONFIG_PPC_64K_PAGES
-typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
-#else
-typedef struct { pte_t pte; } real_pte_t;
-#endif
-
-/* PMD level */
-typedef struct { unsigned long pmd; } pmd_t;
-#define pmd_val(x)	((x).pmd)
-#define __pmd(x)	((pmd_t) { (x) })
-
-/* PUD level exusts only on 4k pages */
-#ifndef CONFIG_PPC_64K_PAGES
-typedef struct { unsigned long pud; } pud_t;
-#define pud_val(x)	((x).pud)
-#define __pud(x)	((pud_t) { (x) })
-#endif
-
-/* PGD level */
-typedef struct { unsigned long pgd; } pgd_t;
-#define pgd_val(x)	((x).pgd)
-#define __pgd(x)	((pgd_t) { (x) })
-
-/* Page protection bits */
-typedef struct { unsigned long pgprot; } pgprot_t;
-#define pgprot_val(x)	((x).pgprot)
-#define __pgprot(x)	((pgprot_t) { (x) })
-
-#else
-
-/*
- * .. while these make it easier on the compiler
- */
-
-typedef unsigned long pte_t;
-#define pte_val(x)	(x)
-#define __pte(x)	(x)
-
-#ifdef CONFIG_PPC_64K_PAGES
-typedef struct { pte_t pte; unsigned long hidx; } real_pte_t;
-#else
-typedef unsigned long real_pte_t;
-#endif
-
-
-typedef unsigned long pmd_t;
-#define pmd_val(x)	(x)
-#define __pmd(x)	(x)
-
-#ifndef CONFIG_PPC_64K_PAGES
-typedef unsigned long pud_t;
-#define pud_val(x)	(x)
-#define __pud(x)	(x)
-#endif
-
-typedef unsigned long pgd_t;
-#define pgd_val(x)	(x)
-#define pgprot_val(x)	(x)
-
-typedef unsigned long pgprot_t;
-#define __pgd(x)	(x)
-#define __pgprot(x)	(x)
-
-#endif
-
-#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
-
-extern int page_is_ram(unsigned long pfn);
-
-extern u64 ppc64_pft_size;		/* Log 2 of page table size */
-
-/* We do define AT_SYSINFO_EHDR but don't use the gate mecanism */
-#define __HAVE_ARCH_GATE_AREA		1
-
-#endif /* __ASSEMBLY__ */
-
-#ifdef MODULE
-#define __page_aligned __attribute__((__aligned__(PAGE_SIZE)))
-#else
-#define __page_aligned \
-	__attribute__((__aligned__(PAGE_SIZE), \
-		__section__(".data.page_aligned")))
-#endif
-
-
-/* This must match the -Ttext linker address            */
-/* Note: tophys & tovirt make assumptions about how     */
-/*       KERNELBASE is defined for performance reasons. */
-/*       When KERNELBASE moves, those macros may have   */
-/*             to change!                               */
-#define PAGE_OFFSET     ASM_CONST(0xC000000000000000)
-#define KERNELBASE      PAGE_OFFSET
-#define VMALLOCBASE     ASM_CONST(0xD000000000000000)
-
-#define VMALLOC_REGION_ID  (VMALLOCBASE >> REGION_SHIFT)
-#define KERNEL_REGION_ID   (KERNELBASE >> REGION_SHIFT)
-#define USER_REGION_ID     (0UL)
-#define REGION_ID(ea)	   (((unsigned long)(ea)) >> REGION_SHIFT)
-
-#define __va(x) ((void *)((unsigned long)(x) + KERNELBASE))
-
-#ifdef CONFIG_FLATMEM
-#define pfn_to_page(pfn)	(mem_map + (pfn))
-#define page_to_pfn(page)	((unsigned long)((page) - mem_map))
-#define pfn_valid(pfn)		((pfn) < max_mapnr)
-#endif
-
-#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define pfn_to_kaddr(pfn)	__va((pfn) << PAGE_SHIFT)
-
-#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
-
-/*
- * Unfortunately the PLT is in the BSS in the PPC32 ELF ABI,
- * and needs to be executable.  This means the whole heap ends
- * up being executable.
- */
-#define VM_DATA_DEFAULT_FLAGS32	(VM_READ | VM_WRITE | VM_EXEC | \
-				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define VM_DATA_DEFAULT_FLAGS64	(VM_READ | VM_WRITE | \
-				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define VM_DATA_DEFAULT_FLAGS \
-	(test_thread_flag(TIF_32BIT) ? \
-	 VM_DATA_DEFAULT_FLAGS32 : VM_DATA_DEFAULT_FLAGS64)
-
-/*
- * This is the default if a program doesn't have a PT_GNU_STACK
- * program header entry. The PPC64 ELF ABI has a non executable stack
- * stack by default, so in the absense of a PT_GNU_STACK program header
- * we turn execute permission off.
- */
-#define VM_STACK_DEFAULT_FLAGS32	(VM_READ | VM_WRITE | VM_EXEC | \
-					 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define VM_STACK_DEFAULT_FLAGS64	(VM_READ | VM_WRITE | \
-					 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define VM_STACK_DEFAULT_FLAGS \
-	(test_thread_flag(TIF_32BIT) ? \
-	 VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64)
-
-#endif /* __KERNEL__ */
-
-#include <asm-generic/page.h>
-
-#endif /* _PPC64_PAGE_H */