Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (56 commits)
  m68k: allow ColdFire 547x and 548x CPUs to be built with MMU enabled
  m68k/Kconfig: Separate classic m68k and coldfire early
  m68k: add ColdFire with MMU enabled support to the m68k mem init code
  m68k: do not use m68k startup or interrupt code for ColdFire CPUs
  m68k: add ColdFire FPU support for the V4e ColdFire CPUs
  m68k: adjustments to stack frame for ColdFire with MMU enabled
  m68k: use non-MMU linker script for ColdFire MMU builds
  m68k: ColdFire with MMU enabled uses same clocking code as non-MMU
  m68k: add code to setup a ColdFire 54xx platform when MMU enabled
  m68k: use non-MMU entry.S code when compiling for ColdFire CPU
  m68k: create ColdFire MMU pgalloc code
  m68k: compile appropriate mm arch files for ColdFire MMU support
  m68k: ColdFire V4e MMU paging init code and miss handler
  m68k: use ColdFire MMU read/write bit flags when ioremapping
  m68k: modify cache push and clear code for ColdFire with MMU enable
  m68k: use tracehook_report_syscall_entry/exit for ColdFire MMU ptrace path
  m68k: ColdFire V4e MMU context support code
  m68k: MMU enabled ColdFire needs 8k ELF alignment
  m68k: set ColdFire MMU page size
  m68k: define PAGE_OFFSET_RAW for ColdFire CPU with MMU enabled
  ...

arch/m68k/Kconfig

@@ -3,7 +3,6 @@ config M68K
 	default y
 	select HAVE_IDE
 	select HAVE_AOUT if MMU
-	select GENERIC_ATOMIC64 if MMU
 	select HAVE_GENERIC_HARDIRQS
 	select GENERIC_IRQ_SHOW
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS
@@ -41,12 +40,15 @@ config GENERIC_CALIBRATE_DELAY
 config GENERIC_IOMAP
 	def_bool MMU
 
+config GENERIC_CSUM
+	bool
+
 config TIME_LOW_RES
 	bool
 	default y
 
 config ARCH_USES_GETTIMEOFFSET
-	def_bool MMU
+	def_bool MMU && !COLDFIRE
 
 config NO_IOPORT
 	def_bool y
@@ -61,6 +63,12 @@ config ZONE_DMA
 config CPU_HAS_NO_BITFIELDS
 	bool
 
+config CPU_HAS_NO_MULDIV64
+	bool
+
+config CPU_HAS_ADDRESS_SPACES
+	bool
+
 config HZ
 	int
 	default 1000 if CLEOPATRA
@@ -80,9 +88,12 @@ config MMU
 config MMU_MOTOROLA
 	bool
 
+config MMU_COLDFIRE
+	bool
+
 config MMU_SUN3
 	bool
-	depends on MMU && !MMU_MOTOROLA
+	depends on MMU && !MMU_MOTOROLA && !MMU_COLDFIRE
 
 menu "Platform setup"
 

arch/m68k/Kconfig.cpu

@@ -1,8 +1,42 @@
 comment "Processor Type"
 
+choice
+	prompt "CPU family support"
+	default M68KCLASSIC if MMU
+	default COLDFIRE if !MMU
+	help
+	  The Freescale (was Motorola) M68K family of processors implements
+	  the full 68000 processor instruction set.
+	  The Freescale ColdFire family of processors is a modern derivitive
+	  of the 68000 processor family. They are mainly targeted at embedded
+	  applications, and are all System-On-Chip (SOC) devices, as opposed
+	  to stand alone CPUs. They implement a subset of the original 68000
+	  processor instruction set.
+	  If you anticipate running this kernel on a computer with a classic
+	  MC68xxx processor, select M68KCLASSIC.
+	  If you anticipate running this kernel on a computer with a ColdFire
+	  processor, select COLDFIRE.
+
+config M68KCLASSIC
+	bool "Classic M68K CPU family support"
+
+config COLDFIRE
+	bool "Coldfire CPU family support"
+	select GENERIC_GPIO
+	select ARCH_REQUIRE_GPIOLIB
+	select CPU_HAS_NO_BITFIELDS
+	select CPU_HAS_NO_MULDIV64
+	select GENERIC_CSUM
+
+endchoice
+
+if M68KCLASSIC
+
 config M68000
 	bool
 	select CPU_HAS_NO_BITFIELDS
+	select CPU_HAS_NO_MULDIV64
+	select GENERIC_CSUM
 	help
 	  The Freescale (was Motorola) 68000 CPU is the first generation of
 	  the well known M68K family of processors. The CPU core as well as
@@ -18,21 +52,11 @@ config MCPU32
 	  based on the 68020 processor. For the most part it is used in
 	  System-On-Chip parts, and does not contain a paging MMU.
 
-config COLDFIRE
-	bool
-	select GENERIC_GPIO
-	select ARCH_REQUIRE_GPIOLIB
-	select CPU_HAS_NO_BITFIELDS
-	help
-	  The Freescale ColdFire family of processors is a modern derivitive
-	  of the 68000 processor family. They are mainly targeted at embedded
-	  applications, and are all System-On-Chip (SOC) devices, as opposed
-	  to stand alone CPUs. They implement a subset of the original 68000
-	  processor instruction set.
-
 config M68020
 	bool "68020 support"
 	depends on MMU
+	select GENERIC_ATOMIC64
+	select CPU_HAS_ADDRESS_SPACES
 	help
 	  If you anticipate running this kernel on a computer with a MC68020
 	  processor, say Y. Otherwise, say N. Note that the 68020 requires a
@@ -42,6 +66,8 @@ config M68020
 config M68030
 	bool "68030 support"
 	depends on MMU && !MMU_SUN3
+	select GENERIC_ATOMIC64
+	select CPU_HAS_ADDRESS_SPACES
 	help
 	  If you anticipate running this kernel on a computer with a MC68030
 	  processor, say Y. Otherwise, say N. Note that a MC68EC030 will not
@@ -50,6 +76,8 @@ config M68030
 config M68040
 	bool "68040 support"
 	depends on MMU && !MMU_SUN3
+	select GENERIC_ATOMIC64
+	select CPU_HAS_ADDRESS_SPACES
 	help
 	  If you anticipate running this kernel on a computer with a MC68LC040
 	  or MC68040 processor, say Y. Otherwise, say N. Note that an
@@ -59,6 +87,8 @@ config M68040
 config M68060
 	bool "68060 support"
 	depends on MMU && !MMU_SUN3
+	select GENERIC_ATOMIC64
+	select CPU_HAS_ADDRESS_SPACES
 	help
 	  If you anticipate running this kernel on a computer with a MC68060
 	  processor, say Y. Otherwise, say N.
@@ -91,10 +121,13 @@ config M68360
 	help
 	  Motorola 68360 processor support.
 
+endif # M68KCLASSIC
+
+if COLDFIRE
+
 config M5206
 	bool "MCF5206"
 	depends on !MMU
-	select COLDFIRE
 	select COLDFIRE_SW_A7
 	select HAVE_MBAR
 	help
@@ -103,7 +136,6 @@ config M5206
 config M5206e
 	bool "MCF5206e"
 	depends on !MMU
-	select COLDFIRE
 	select COLDFIRE_SW_A7
 	select HAVE_MBAR
 	help
@@ -112,7 +144,6 @@ config M5206e
 config M520x
 	bool "MCF520x"
 	depends on !MMU
-	select COLDFIRE
 	select GENERIC_CLOCKEVENTS
 	select HAVE_CACHE_SPLIT
 	help
@@ -121,7 +152,6 @@ config M520x
 config M523x
 	bool "MCF523x"
 	depends on !MMU
-	select COLDFIRE
 	select GENERIC_CLOCKEVENTS
 	select HAVE_CACHE_SPLIT
 	select HAVE_IPSBAR
@@ -131,7 +161,6 @@ config M523x
 config M5249
 	bool "MCF5249"
 	depends on !MMU
-	select COLDFIRE
 	select COLDFIRE_SW_A7
 	select HAVE_MBAR
 	help
@@ -143,7 +172,6 @@ config M527x
 config M5271
 	bool "MCF5271"
 	depends on !MMU
-	select COLDFIRE
 	select M527x
 	select HAVE_CACHE_SPLIT
 	select HAVE_IPSBAR
@@ -154,7 +182,6 @@ config M5271
 config M5272
 	bool "MCF5272"
 	depends on !MMU
-	select COLDFIRE
 	select COLDFIRE_SW_A7
 	select HAVE_MBAR
 	help
@@ -163,7 +190,6 @@ config M5272
 config M5275
 	bool "MCF5275"
 	depends on !MMU
-	select COLDFIRE
 	select M527x
 	select HAVE_CACHE_SPLIT
 	select HAVE_IPSBAR
@@ -174,7 +200,6 @@ config M5275
 config M528x
 	bool "MCF528x"
 	depends on !MMU
-	select COLDFIRE
 	select GENERIC_CLOCKEVENTS
 	select HAVE_CACHE_SPLIT
 	select HAVE_IPSBAR
@@ -184,7 +209,6 @@ config M528x
 config M5307
 	bool "MCF5307"
 	depends on !MMU
-	select COLDFIRE
 	select COLDFIRE_SW_A7
 	select HAVE_CACHE_CB
 	select HAVE_MBAR
@@ -194,7 +218,6 @@ config M5307
 config M532x
 	bool "MCF532x"
 	depends on !MMU
-	select COLDFIRE
 	select HAVE_CACHE_CB
 	help
 	  Freescale (Motorola) ColdFire 532x processor support.
@@ -202,7 +225,6 @@ config M532x
 config M5407
 	bool "MCF5407"
 	depends on !MMU
-	select COLDFIRE
 	select COLDFIRE_SW_A7
 	select HAVE_CACHE_CB
 	select HAVE_MBAR
@@ -214,9 +236,8 @@ config M54xx
 
 config M547x
 	bool "MCF547x"
-	depends on !MMU
-	select COLDFIRE
 	select M54xx
+	select MMU_COLDFIRE if MMU
 	select HAVE_CACHE_CB
 	select HAVE_MBAR
 	help
@@ -224,14 +245,15 @@ config M547x
 
 config M548x
 	bool "MCF548x"
-	depends on !MMU
-	select COLDFIRE
+	select MMU_COLDFIRE if MMU
 	select M54xx
 	select HAVE_CACHE_CB
 	select HAVE_MBAR
 	help
 	  Freescale ColdFire 5480/5481/5482/5483/5484/5485 processor support.
 
+endif # COLDFIRE
+
 
 comment "Processor Specific Options"
 

arch/m68k/Kconfig.debug

@@ -2,6 +2,14 @@ menu "Kernel hacking"
 
 source "lib/Kconfig.debug"
 
+config BOOTPARAM
+	bool 'Compiled-in Kernel Boot Parameter'
+
+config BOOTPARAM_STRING
+	string 'Kernel Boot Parameter'
+	default 'console=ttyS0,19200'
+	depends on BOOTPARAM
+
 if !MMU
 
 config FULLDEBUG
@@ -15,14 +23,6 @@ config HIGHPROFILE
 	help
 	  Use a fast secondary clock to produce profiling information.
 
-config BOOTPARAM
-	bool 'Compiled-in Kernel Boot Parameter'
-
-config BOOTPARAM_STRING
-	string 'Kernel Boot Parameter'
-	default 'console=ttyS0,19200'
-	depends on BOOTPARAM
-
 config NO_KERNEL_MSG
 	bool "Suppress Kernel BUG Messages"
 	help

arch/m68k/Kconfig.machine

@@ -1,5 +1,7 @@
 comment "Machine Types"
 
+if M68KCLASSIC
+
 config AMIGA
 	bool "Amiga support"
 	depends on MMU
@@ -130,6 +132,8 @@ config SUN3
 
 	  If you don't want to compile a kernel exclusively for a Sun 3, say N.
 
+endif # M68KCLASSIC
+
 config PILOT
 	bool
 

arch/m68k/include/asm/anchor.h

@@ -1,112 +0,0 @@
-/****************************************************************************/
-
-/*
- *	anchor.h -- Anchor CO-MEM Lite PCI host bridge part.
- *
- *	(C) Copyright 2000, Moreton Bay (www.moreton.com.au)
- */
-
-/****************************************************************************/
-#ifndef	anchor_h
-#define	anchor_h
-/****************************************************************************/
-
-/*
- *	Define basic addressing info.
- */
-#if defined(CONFIG_M5407C3)
-#define	COMEM_BASE	0xFFFF0000	/* Base of CO-MEM address space */
-#define	COMEM_IRQ	25		/* IRQ of anchor part */
-#else
-#define	COMEM_BASE	0x80000000	/* Base of CO-MEM address space */
-#define	COMEM_IRQ	25		/* IRQ of anchor part */
-#endif
-
-/****************************************************************************/
-
-/*
- *	4-byte registers of CO-MEM, so adjust register addresses for
- *	easy access. Handy macro for word access too.
- */
-#define	LREG(a)		((a) >> 2)
-#define	WREG(a)		((a) >> 1)
-
-
-/*
- *	Define base addresses within CO-MEM Lite register address space.
- */
-#define	COMEM_I2O	0x0000		/* I2O registers */
-#define	COMEM_OPREGS	0x0400		/* Operation registers */
-#define	COMEM_PCIBUS	0x2000		/* Direct access to PCI bus */
-#define	COMEM_SHMEM	0x4000		/* Shared memory region */
-
-#define	COMEM_SHMEMSIZE	0x4000		/* Size of shared memory */
-
-
-/*
- *	Define CO-MEM Registers.
- */
-#define	COMEM_I2OHISR	0x0030		/* I2O host interrupt status */
-#define	COMEM_I2OHIMR	0x0034		/* I2O host interrupt mask */
-#define	COMEM_I2OLISR	0x0038		/* I2O local interrupt status */
-#define	COMEM_I2OLIMR	0x003c		/* I2O local interrupt mask */
-#define	COMEM_IBFPFIFO	0x0040		/* I2O inbound free/post FIFO */
-#define	COMEM_OBPFFIFO	0x0044		/* I2O outbound post/free FIFO */
-#define	COMEM_IBPFFIFO	0x0048		/* I2O inbound post/free FIFO */
-#define	COMEM_OBFPFIFO	0x004c		/* I2O outbound free/post FIFO */
-
-#define	COMEM_DAHBASE	0x0460		/* Direct access base address */
-
-#define	COMEM_NVCMD	0x04a0		/* I2C serial command */
-#define	COMEM_NVREAD	0x04a4		/* I2C serial read */
-#define	COMEM_NVSTAT	0x04a8		/* I2C status */
-
-#define	COMEM_DMALBASE	0x04b0		/* DMA local base address */
-#define	COMEM_DMAHBASE	0x04b4		/* DMA host base address */
-#define	COMEM_DMASIZE	0x04b8		/* DMA size */
-#define	COMEM_DMACTL	0x04bc		/* DMA control */
-
-#define	COMEM_HCTL	0x04e0		/* Host control */
-#define	COMEM_HINT	0x04e4		/* Host interrupt control/status */
-#define	COMEM_HLDATA	0x04e8		/* Host to local data mailbox */
-#define	COMEM_LINT	0x04f4		/* Local interrupt contole status */
-#define	COMEM_LHDATA	0x04f8		/* Local to host data mailbox */
-
-#define	COMEM_LBUSCFG	0x04fc		/* Local bus configuration */
-
-
-/*
- *	Commands and flags for use with Direct Access Register.
- */
-#define	COMEM_DA_IACK	0x00000000	/* Interrupt acknowledge (read) */
-#define	COMEM_DA_SPCL	0x00000010	/* Special cycle (write) */
-#define	COMEM_DA_MEMRD	0x00000004	/* Memory read cycle */
-#define	COMEM_DA_MEMWR	0x00000004	/* Memory write cycle */
-#define	COMEM_DA_IORD	0x00000002	/* I/O read cycle */
-#define	COMEM_DA_IOWR	0x00000002	/* I/O write cycle */
-#define	COMEM_DA_CFGRD	0x00000006	/* Configuration read cycle */
-#define	COMEM_DA_CFGWR	0x00000006	/* Configuration write cycle */
-
-#define	COMEM_DA_ADDR(a)	((a) & 0xffffe000)
-
-#define	COMEM_DA_OFFSET(a)	((a) & 0x00001fff)
-
-
-/*
- *	The PCI bus will be limited in what slots will actually be used.
- *	Define valid device numbers for different boards.
- */
-#if defined(CONFIG_M5407C3)
-#define	COMEM_MINDEV	14		/* Minimum valid DEVICE */
-#define	COMEM_MAXDEV	14		/* Maximum valid DEVICE */
-#define	COMEM_BRIDGEDEV	15		/* Slot bridge is in */
-#else
-#define	COMEM_MINDEV	0		/* Minimum valid DEVICE */
-#define	COMEM_MAXDEV	3		/* Maximum valid DEVICE */
-#endif
-
-#define	COMEM_MAXPCI	(COMEM_MAXDEV+1)	/* Maximum PCI devices */
-
-
-/****************************************************************************/
-#endif	/* anchor_h */

arch/m68k/include/asm/atomic.h

@@ -55,6 +55,16 @@ static inline int atomic_dec_and_test(atomic_t *v)
 	return c != 0;
 }
 
+static inline int atomic_dec_and_test_lt(atomic_t *v)
+{
+	char c;
+	__asm__ __volatile__(
+		"subql #1,%1; slt %0"
+		: "=d" (c), "=m" (*v)
+		: "m" (*v));
+	return c != 0;
+}
+
 static inline int atomic_inc_and_test(atomic_t *v)
 {
 	char c;

arch/m68k/include/asm/cacheflush_mm.h

@@ -2,23 +2,89 @@
 #define _M68K_CACHEFLUSH_H
 
 #include <linux/mm.h>
+#ifdef CONFIG_COLDFIRE
+#include <asm/mcfsim.h>
+#endif
 
 /* cache code */
 #define FLUSH_I_AND_D	(0x00000808)
 #define FLUSH_I		(0x00000008)
 
+#ifndef ICACHE_MAX_ADDR
+#define ICACHE_MAX_ADDR	0
+#define ICACHE_SET_MASK	0
+#define DCACHE_MAX_ADDR	0
+#define DCACHE_SETMASK	0
+#endif
+
+static inline void flush_cf_icache(unsigned long start, unsigned long end)
+{
+	unsigned long set;
+
+	for (set = start; set <= end; set += (0x10 - 3)) {
+		__asm__ __volatile__ (
+			"cpushl %%ic,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%ic,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%ic,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%ic,(%0)"
+			: "=a" (set)
+			: "a" (set));
+	}
+}
+
+static inline void flush_cf_dcache(unsigned long start, unsigned long end)
+{
+	unsigned long set;
+
+	for (set = start; set <= end; set += (0x10 - 3)) {
+		__asm__ __volatile__ (
+			"cpushl %%dc,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%dc,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%dc,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%dc,(%0)"
+			: "=a" (set)
+			: "a" (set));
+	}
+}
+
+static inline void flush_cf_bcache(unsigned long start, unsigned long end)
+{
+	unsigned long set;
+
+	for (set = start; set <= end; set += (0x10 - 3)) {
+		__asm__ __volatile__ (
+			"cpushl %%bc,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%bc,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%bc,(%0)\n\t"
+			"addq%.l #1,%0\n\t"
+			"cpushl %%bc,(%0)"
+			: "=a" (set)
+			: "a" (set));
+	}
+}
+
 /*
  * Cache handling functions
  */
 
 static inline void flush_icache(void)
 {
-	if (CPU_IS_040_OR_060)
+	if (CPU_IS_COLDFIRE) {
+		flush_cf_icache(0, ICACHE_MAX_ADDR);
+	} else if (CPU_IS_040_OR_060) {
 		asm volatile (	"nop\n"
 			"	.chip	68040\n"
 			"	cpusha	%bc\n"
 			"	.chip	68k");
-	else {
+	} else {
 		unsigned long tmp;
 		asm volatile (	"movec	%%cacr,%0\n"
 			"	or.w	%1,%0\n"
@@ -51,12 +117,14 @@ extern void cache_push_v(unsigned long vaddr, int len);
    process changes.  */
 #define __flush_cache_all()					\
 ({								\
-	if (CPU_IS_040_OR_060)					\
+	if (CPU_IS_COLDFIRE) {					\
+		flush_cf_dcache(0, DCACHE_MAX_ADDR);		\
+	} else if (CPU_IS_040_OR_060) {				\
 		__asm__ __volatile__("nop\n\t"			\
 				     ".chip 68040\n\t"		\
 				     "cpusha %dc\n\t"		\
 				     ".chip 68k");		\
-	else {							\
+	} else {						\
 		unsigned long _tmp;				\
 		__asm__ __volatile__("movec %%cacr,%0\n\t"	\
 				     "orw %1,%0\n\t"		\
@@ -112,7 +180,17 @@ static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vm
 /* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
 static inline void __flush_page_to_ram(void *vaddr)
 {
-	if (CPU_IS_040_OR_060) {
+	if (CPU_IS_COLDFIRE) {
+		unsigned long addr, start, end;
+		addr = ((unsigned long) vaddr) & ~(PAGE_SIZE - 1);
+		start = addr & ICACHE_SET_MASK;
+		end = (addr + PAGE_SIZE - 1) & ICACHE_SET_MASK;
+		if (start > end) {
+			flush_cf_bcache(0, end);
+			end = ICACHE_MAX_ADDR;
+		}
+		flush_cf_bcache(start, end);
+	} else if (CPU_IS_040_OR_060) {
 		__asm__ __volatile__("nop\n\t"
 				     ".chip 68040\n\t"
 				     "cpushp %%bc,(%0)\n\t"

arch/m68k/include/asm/checksum.h

@@ -3,6 +3,10 @@
 
 #include <linux/in6.h>
 
+#ifdef CONFIG_GENERIC_CSUM
+#include <asm-generic/checksum.h>
+#else
+
 /*
  * computes the checksum of a memory block at buff, length len,
  * and adds in "sum" (32-bit)
@@ -34,30 +38,6 @@ extern __wsum csum_partial_copy_nocheck(const void *src,
 					      void *dst, int len,
 					      __wsum sum);
 
-
-#ifdef CONFIG_COLDFIRE
-
-/*
- *	The ColdFire cores don't support all the 68k instructions used
- *	in the optimized checksum code below. So it reverts back to using
- *	more standard C coded checksums. The fast checksum code is
- *	significantly larger than the optimized version, so it is not
- *	inlined here.
- */
-__sum16 ip_fast_csum(const void *iph, unsigned int ihl);
-
-static inline __sum16 csum_fold(__wsum sum)
-{
-	unsigned int tmp = (__force u32)sum;
-
-	tmp = (tmp & 0xffff) + (tmp >> 16);
-	tmp = (tmp & 0xffff) + (tmp >> 16);
-
-	return (__force __sum16)~tmp;
-}
-
-#else
-
 /*
  *	This is a version of ip_fast_csum() optimized for IP headers,
  *	which always checksum on 4 octet boundaries.
@@ -97,8 +77,6 @@ static inline __sum16 csum_fold(__wsum sum)
 	return (__force __sum16)~sum;
 }
 
-#endif /* CONFIG_COLDFIRE */
-
 static inline __wsum
 csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
 		  unsigned short proto, __wsum sum)
@@ -167,4 +145,5 @@ csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
 	return csum_fold(sum);
 }
 
+#endif /* CONFIG_GENERIC_CSUM */
 #endif /* _M68K_CHECKSUM_H */

arch/m68k/include/asm/div64.h

@@ -1,7 +1,9 @@
 #ifndef _M68K_DIV64_H
 #define _M68K_DIV64_H
 
-#ifdef CONFIG_MMU
+#ifdef CONFIG_CPU_HAS_NO_MULDIV64
+#include <asm-generic/div64.h>
+#else
 
 #include <linux/types.h>
 
@@ -27,8 +29,6 @@
 	__rem;							\
 })
 
-#else
-#include <asm-generic/div64.h>
-#endif /* CONFIG_MMU */
+#endif /* CONFIG_CPU_HAS_NO_MULDIV64 */
 
 #endif /* _M68K_DIV64_H */

arch/m68k/include/asm/elf.h

@@ -59,10 +59,10 @@ typedef struct user_m68kfp_struct elf_fpregset_t;
    is actually used on ASV.  */
 #define ELF_PLAT_INIT(_r, load_addr)	_r->a1 = 0
 
-#ifndef CONFIG_SUN3
-#define ELF_EXEC_PAGESIZE	4096
-#else
+#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
 #define ELF_EXEC_PAGESIZE	8192
+#else
+#define ELF_EXEC_PAGESIZE	4096
 #endif
 
 /* This is the location that an ET_DYN program is loaded if exec'ed.  Typical

arch/m68k/include/asm/entry.h

@@ -222,16 +222,24 @@
  * Non-MMU systems do not reserve %a2 in this way, and this definition is
  * not used for them.
  */
+#ifdef CONFIG_MMU
+
 #define curptr a2
 
 #define GET_CURRENT(tmp) get_current tmp
 .macro get_current reg=%d0
 	movel	%sp,\reg
-	andw	#-THREAD_SIZE,\reg
+	andl	#-THREAD_SIZE,\reg
 	movel	\reg,%curptr
 	movel	%curptr@,%curptr
 .endm
 
+#else
+
+#define GET_CURRENT(tmp)
+
+#endif /* CONFIG_MMU */
+
 #else /* C source */
 
 #define STR(X) STR1(X)

arch/m68k/include/asm/fpu.h

@@ -12,6 +12,8 @@
 #define FPSTATESIZE (96)
 #elif defined(CONFIG_M68KFPU_EMU)
 #define FPSTATESIZE (28)
+#elif defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU)
+#define FPSTATESIZE (16)
 #elif defined(CONFIG_M68060)
 #define FPSTATESIZE (12)
 #else

arch/m68k/include/asm/gpio.h

@@ -225,7 +225,8 @@ static inline void gpio_set_value(unsigned gpio, int value)
 
 static inline int gpio_to_irq(unsigned gpio)
 {
-	return (gpio < MCFGPIO_IRQ_MAX) ? gpio + MCFGPIO_IRQ_VECBASE : -EINVAL;
+	return (gpio < MCFGPIO_IRQ_MAX) ? gpio + MCFGPIO_IRQ_VECBASE
+		: __gpio_to_irq(gpio);
 }
 
 static inline int irq_to_gpio(unsigned irq)

arch/m68k/include/asm/irq.h

@@ -25,7 +25,8 @@
 #define NR_IRQS	0
 #endif
 
-#ifdef CONFIG_MMU
+#if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \
+    defined(CONFIG_M68040) || defined(CONFIG_M68060)
 
 /*
  * Interrupt source definitions
@@ -80,7 +81,7 @@ extern unsigned int irq_canonicalize(unsigned int irq);
 
 #else
 #define irq_canonicalize(irq)  (irq)
-#endif /* CONFIG_MMU */
+#endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */
 
 asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
 extern atomic_t irq_err_count;

arch/m68k/include/asm/m54xxacr.h

@@ -39,8 +39,12 @@
 #define ACR_CM_OFF_PRE	0x00000040	/* No cache, precise */
 #define ACR_CM_OFF_IMP	0x00000060	/* No cache, imprecise */
 #define ACR_CM		0x00000060	/* Cache mode mask */
+#define ACR_SP		0x00000008	/* Supervisor protect */
 #define ACR_WPROTECT	0x00000004	/* Write protect */
 
+#define ACR_BA(x)	((x) & 0xff000000)
+#define ACR_ADMSK(x)	((((x) - 1) & 0xff000000) >> 8)
+
 #if defined(CONFIG_M5407)
 
 #define ICACHE_SIZE 0x4000	/* instruction - 16k */
@@ -56,6 +60,11 @@
 #define CACHE_LINE_SIZE 0x0010	/* 16 bytes */
 #define CACHE_WAYS 4		/* 4 ways */
 
+#define ICACHE_SET_MASK	((ICACHE_SIZE / 64 - 1) << CACHE_WAYS)
+#define DCACHE_SET_MASK	((DCACHE_SIZE / 64 - 1) << CACHE_WAYS)
+#define ICACHE_MAX_ADDR	ICACHE_SET_MASK
+#define DCACHE_MAX_ADDR	DCACHE_SET_MASK
+
 /*
  *	Version 4 cores have a true harvard style separate instruction
  *	and data cache. Enable data and instruction caches, also enable write
@@ -73,6 +82,27 @@
 #else
 #define CACHE_MODE (CACR_DEC+CACR_DESB+CACR_DDCM_P+CACR_BEC+CACR_IEC+CACR_EUSP)
 #endif
+#define CACHE_INIT (CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
+
+#if defined(CONFIG_MMU)
+/*
+ *	If running with the MMU enabled then we need to map the internal
+ *	register region as non-cacheable. And then we map all our RAM as
+ *	cacheable and supervisor access only.
+ */
+#define ACR0_MODE	(ACR_BA(CONFIG_MBAR)+ACR_ADMSK(0x1000000)+ \
+			 ACR_ENABLE+ACR_SUPER+ACR_CM_OFF_PRE+ACR_SP)
+#define ACR1_MODE	(ACR_BA(CONFIG_RAMBASE)+ACR_ADMSK(CONFIG_RAMSIZE)+ \
+			 ACR_ENABLE+ACR_SUPER+ACR_SP)
+#define ACR2_MODE	0
+#define ACR3_MODE	(ACR_BA(CONFIG_RAMBASE)+ACR_ADMSK(CONFIG_RAMSIZE)+ \
+			 ACR_ENABLE+ACR_SUPER+ACR_SP)
+
+#else
+
+/*
+ *	For the non-MMU enabled case we map all of RAM as cacheable.
+ */
 #if defined(CONFIG_CACHE_COPYBACK)
 #define DATA_CACHE_MODE (ACR_ENABLE+ACR_ANY+ACR_CM_CP)
 #else
@@ -80,7 +110,6 @@
 #endif
 #define INSN_CACHE_MODE (ACR_ENABLE+ACR_ANY)
 
-#define CACHE_INIT	(CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
 #define CACHE_INVALIDATE  (CACHE_MODE+CACR_DCINVA+CACR_BCINVA+CACR_ICINVA)
 #define CACHE_INVALIDATEI (CACHE_MODE+CACR_BCINVA+CACR_ICINVA)
 #define CACHE_INVALIDATED (CACHE_MODE+CACR_DCINVA)
@@ -94,4 +123,5 @@
 #define	CACHE_PUSH
 #endif
 
+#endif /* CONFIG_MMU */
 #endif	/* m54xxacr_h */

arch/m68k/include/asm/mcf_pgalloc.h

@@ -0,0 +1,102 @@
+#ifndef M68K_MCF_PGALLOC_H
+#define M68K_MCF_PGALLOC_H
+
+#include <asm/tlb.h>
+#include <asm/tlbflush.h>
+
+extern inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+	free_page((unsigned long) pte);
+}
+
+extern const char bad_pmd_string[];
+
+extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+	unsigned long address)
+{
+	unsigned long page = __get_free_page(GFP_DMA|__GFP_REPEAT);
+
+	if (!page)
+		return NULL;
+
+	memset((void *)page, 0, PAGE_SIZE);
+	return (pte_t *) (page);
+}
+
+extern inline pmd_t *pmd_alloc_kernel(pgd_t *pgd, unsigned long address)
+{
+	return (pmd_t *) pgd;
+}
+
+#define pmd_alloc_one_fast(mm, address) ({ BUG(); ((pmd_t *)1); })
+#define pmd_alloc_one(mm, address)      ({ BUG(); ((pmd_t *)2); })
+
+#define pte_alloc_one_fast(mm, addr) pte_alloc_one(mm, addr)
+
+#define pmd_populate(mm, pmd, page) (pmd_val(*pmd) = \
+	(unsigned long)(page_address(page)))
+
+#define pmd_populate_kernel(mm, pmd, pte) (pmd_val(*pmd) = (unsigned long)(pte))
+
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t page,
+				  unsigned long address)
+{
+	__free_page(page);
+}
+
+#define __pmd_free_tlb(tlb, pmd, address) do { } while (0)
+
+static inline struct page *pte_alloc_one(struct mm_struct *mm,
+	unsigned long address)
+{
+	struct page *page = alloc_pages(GFP_DMA|__GFP_REPEAT, 0);
+	pte_t *pte;
+
+	if (!page)
+		return NULL;
+
+	pte = kmap(page);
+	if (pte) {
+		clear_page(pte);
+		__flush_page_to_ram(pte);
+		flush_tlb_kernel_page(pte);
+		nocache_page(pte);
+	}
+	kunmap(page);
+
+	return page;
+}
+
+extern inline void pte_free(struct mm_struct *mm, struct page *page)
+{
+	__free_page(page);
+}
+
+/*
+ * In our implementation, each pgd entry contains 1 pmd that is never allocated
+ * or freed.  pgd_present is always 1, so this should never be called. -NL
+ */
+#define pmd_free(mm, pmd) BUG()
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+	free_page((unsigned long) pgd);
+}
+
+static inline pgd_t *pgd_alloc(struct mm_struct *mm)
+{
+	pgd_t *new_pgd;
+
+	new_pgd = (pgd_t *)__get_free_page(GFP_DMA | __GFP_NOWARN);
+	if (!new_pgd)
+		return NULL;
+	memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE);
+	memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);
+	return new_pgd;
+}
+
+#define pgd_populate(mm, pmd, pte) BUG()
+
+#endif /* M68K_MCF_PGALLOC_H */

arch/m68k/include/asm/mcf_pgtable.h

@@ -0,0 +1,425 @@
+#ifndef _MCF_PGTABLE_H
+#define _MCF_PGTABLE_H
+
+#include <asm/mcfmmu.h>
+#include <asm/page.h>
+
+/*
+ * MMUDR bits, in proper place. We write these directly into the MMUDR
+ * after masking from the pte.
+ */
+#define CF_PAGE_LOCKED		MMUDR_LK	/* 0x00000002 */
+#define CF_PAGE_EXEC		MMUDR_X		/* 0x00000004 */
+#define CF_PAGE_WRITABLE	MMUDR_W		/* 0x00000008 */
+#define CF_PAGE_READABLE	MMUDR_R		/* 0x00000010 */
+#define CF_PAGE_SYSTEM		MMUDR_SP	/* 0x00000020 */
+#define CF_PAGE_COPYBACK	MMUDR_CM_CCB	/* 0x00000040 */
+#define CF_PAGE_NOCACHE		MMUDR_CM_NCP	/* 0x00000080 */
+
+#define CF_CACHEMASK		(~MMUDR_CM_CCB)
+#define CF_PAGE_MMUDR_MASK	0x000000fe
+
+#define _PAGE_NOCACHE030	CF_PAGE_NOCACHE
+
+/*
+ * MMUTR bits, need shifting down.
+ */
+#define CF_PAGE_MMUTR_MASK	0x00000c00
+#define CF_PAGE_MMUTR_SHIFT	10
+
+#define CF_PAGE_VALID		(MMUTR_V << CF_PAGE_MMUTR_SHIFT)
+#define CF_PAGE_SHARED		(MMUTR_SG << CF_PAGE_MMUTR_SHIFT)
+
+/*
+ * Fake bits, not implemented in CF, will get masked out before
+ * hitting hardware.
+ */
+#define CF_PAGE_DIRTY		0x00000001
+#define CF_PAGE_FILE		0x00000200
+#define CF_PAGE_ACCESSED	0x00001000
+
+#define _PAGE_CACHE040		0x020   /* 68040 cache mode, cachable, copyback */
+#define _PAGE_NOCACHE_S		0x040   /* 68040 no-cache mode, serialized */
+#define _PAGE_NOCACHE		0x060   /* 68040 cache mode, non-serialized */
+#define _PAGE_CACHE040W		0x000   /* 68040 cache mode, cachable, write-through */
+#define _DESCTYPE_MASK		0x003
+#define _CACHEMASK040		(~0x060)
+#define _PAGE_GLOBAL040		0x400   /* 68040 global bit, used for kva descs */
+
+/*
+ * Externally used page protection values.
+ */
+#define _PAGE_PRESENT	(CF_PAGE_VALID)
+#define _PAGE_ACCESSED	(CF_PAGE_ACCESSED)
+#define _PAGE_DIRTY	(CF_PAGE_DIRTY)
+#define _PAGE_READWRITE (CF_PAGE_READABLE \
+				| CF_PAGE_WRITABLE \
+				| CF_PAGE_SYSTEM \
+				| CF_PAGE_SHARED)
+
+/*
+ * Compound page protection values.
+ */
+#define PAGE_NONE	__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED)
+
+#define PAGE_SHARED     __pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_SHARED)
+
+#define PAGE_INIT	__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_READABLE \
+				 | CF_PAGE_WRITABLE \
+				 | CF_PAGE_EXEC \
+				 | CF_PAGE_SYSTEM)
+
+#define PAGE_KERNEL	__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_READABLE \
+				 | CF_PAGE_WRITABLE \
+				 | CF_PAGE_EXEC \
+				 | CF_PAGE_SYSTEM)
+
+#define PAGE_COPY	__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_READABLE \
+				 | CF_PAGE_DIRTY)
+
+/*
+ * Page protections for initialising protection_map. See mm/mmap.c
+ * for use. In general, the bit positions are xwr, and P-items are
+ * private, the S-items are shared.
+ */
+#define __P000		PAGE_NONE
+#define __P001		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_READABLE)
+#define __P010		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_WRITABLE)
+#define __P011		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_READABLE \
+				 | CF_PAGE_WRITABLE)
+#define __P100		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_EXEC)
+#define __P101		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_READABLE \
+				 | CF_PAGE_EXEC)
+#define __P110		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_WRITABLE \
+				 | CF_PAGE_EXEC)
+#define __P111		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_READABLE \
+				 | CF_PAGE_WRITABLE \
+				 | CF_PAGE_EXEC)
+
+#define __S000		PAGE_NONE
+#define __S001		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_READABLE)
+#define __S010		PAGE_SHARED
+#define __S011		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_SHARED \
+				 | CF_PAGE_READABLE)
+#define __S100		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_EXEC)
+#define __S101		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_READABLE \
+				 | CF_PAGE_EXEC)
+#define __S110		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_SHARED \
+				 | CF_PAGE_EXEC)
+#define __S111		__pgprot(CF_PAGE_VALID \
+				 | CF_PAGE_ACCESSED \
+				 | CF_PAGE_SHARED \
+				 | CF_PAGE_READABLE \
+				 | CF_PAGE_EXEC)
+
+#define PTE_MASK	PAGE_MASK
+#define CF_PAGE_CHG_MASK (PTE_MASK | CF_PAGE_ACCESSED | CF_PAGE_DIRTY)
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Conversion functions: convert a page and protection to a page entry,
+ * and a page entry and page directory to the page they refer to.
+ */
+#define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot))
+
+static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+{
+	pte_val(pte) = (pte_val(pte) & CF_PAGE_CHG_MASK) | pgprot_val(newprot);
+	return pte;
+}
+
+#define pmd_set(pmdp, ptep) do {} while (0)
+
+static inline void pgd_set(pgd_t *pgdp, pmd_t *pmdp)
+{
+	pgd_val(*pgdp) = virt_to_phys(pmdp);
+}
+
+#define __pte_page(pte)	((unsigned long) (pte_val(pte) & PAGE_MASK))
+#define __pmd_page(pmd)	((unsigned long) (pmd_val(pmd)))
+
+static inline int pte_none(pte_t pte)
+{
+	return !pte_val(pte);
+}
+
+static inline int pte_present(pte_t pte)
+{
+	return pte_val(pte) & CF_PAGE_VALID;
+}
+
+static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
+	pte_t *ptep)
+{
+	pte_val(*ptep) = 0;
+}
+
+#define pte_pagenr(pte)	((__pte_page(pte) - PAGE_OFFSET) >> PAGE_SHIFT)
+#define pte_page(pte)	virt_to_page(__pte_page(pte))
+
+static inline int pmd_none2(pmd_t *pmd) { return !pmd_val(*pmd); }
+#define pmd_none(pmd) pmd_none2(&(pmd))
+static inline int pmd_bad2(pmd_t *pmd) { return 0; }
+#define pmd_bad(pmd) pmd_bad2(&(pmd))
+#define pmd_present(pmd) (!pmd_none2(&(pmd)))
+static inline void pmd_clear(pmd_t *pmdp) { pmd_val(*pmdp) = 0; }
+
+static inline int pgd_none(pgd_t pgd) { return 0; }
+static inline int pgd_bad(pgd_t pgd) { return 0; }
+static inline int pgd_present(pgd_t pgd) { return 1; }
+static inline void pgd_clear(pgd_t *pgdp) {}
+
+#define pte_ERROR(e) \
+	printk(KERN_ERR "%s:%d: bad pte %08lx.\n",	\
+	__FILE__, __LINE__, pte_val(e))
+#define pmd_ERROR(e) \
+	printk(KERN_ERR "%s:%d: bad pmd %08lx.\n",	\
+	__FILE__, __LINE__, pmd_val(e))
+#define pgd_ERROR(e) \
+	printk(KERN_ERR "%s:%d: bad pgd %08lx.\n",	\
+	__FILE__, __LINE__, pgd_val(e))
+
+/*
+ * The following only work if pte_present() is true.
+ * Undefined behaviour if not...
+ * [we have the full set here even if they don't change from m68k]
+ */
+static inline int pte_read(pte_t pte)
+{
+	return pte_val(pte) & CF_PAGE_READABLE;
+}
+
+static inline int pte_write(pte_t pte)
+{
+	return pte_val(pte) & CF_PAGE_WRITABLE;
+}
+
+static inline int pte_exec(pte_t pte)
+{
+	return pte_val(pte) & CF_PAGE_EXEC;
+}
+
+static inline int pte_dirty(pte_t pte)
+{
+	return pte_val(pte) & CF_PAGE_DIRTY;
+}
+
+static inline int pte_young(pte_t pte)
+{
+	return pte_val(pte) & CF_PAGE_ACCESSED;
+}
+
+static inline int pte_file(pte_t pte)
+{
+	return pte_val(pte) & CF_PAGE_FILE;
+}
+
+static inline int pte_special(pte_t pte)
+{
+	return 0;
+}
+
+static inline pte_t pte_wrprotect(pte_t pte)
+{
+	pte_val(pte) &= ~CF_PAGE_WRITABLE;
+	return pte;
+}
+
+static inline pte_t pte_rdprotect(pte_t pte)
+{
+	pte_val(pte) &= ~CF_PAGE_READABLE;
+	return pte;
+}
+
+static inline pte_t pte_exprotect(pte_t pte)
+{
+	pte_val(pte) &= ~CF_PAGE_EXEC;
+	return pte;
+}
+
+static inline pte_t pte_mkclean(pte_t pte)
+{
+	pte_val(pte) &= ~CF_PAGE_DIRTY;
+	return pte;
+}
+
+static inline pte_t pte_mkold(pte_t pte)
+{
+	pte_val(pte) &= ~CF_PAGE_ACCESSED;
+	return pte;
+}
+
+static inline pte_t pte_mkwrite(pte_t pte)
+{
+	pte_val(pte) |= CF_PAGE_WRITABLE;
+	return pte;
+}
+
+static inline pte_t pte_mkread(pte_t pte)
+{
+	pte_val(pte) |= CF_PAGE_READABLE;
+	return pte;
+}
+
+static inline pte_t pte_mkexec(pte_t pte)
+{
+	pte_val(pte) |= CF_PAGE_EXEC;
+	return pte;
+}
+
+static inline pte_t pte_mkdirty(pte_t pte)
+{
+	pte_val(pte) |= CF_PAGE_DIRTY;
+	return pte;
+}
+
+static inline pte_t pte_mkyoung(pte_t pte)
+{
+	pte_val(pte) |= CF_PAGE_ACCESSED;
+	return pte;
+}
+
+static inline pte_t pte_mknocache(pte_t pte)
+{
+	pte_val(pte) |= 0x80 | (pte_val(pte) & ~0x40);
+	return pte;
+}
+
+static inline pte_t pte_mkcache(pte_t pte)
+{
+	pte_val(pte) &= ~CF_PAGE_NOCACHE;
+	return pte;
+}
+
+static inline pte_t pte_mkspecial(pte_t pte)
+{
+	return pte;
+}
+
+#define swapper_pg_dir kernel_pg_dir
+extern pgd_t kernel_pg_dir[PTRS_PER_PGD];
+
+/*
+ * Find an entry in a pagetable directory.
+ */
+#define pgd_index(address)	((address) >> PGDIR_SHIFT)
+#define pgd_offset(mm, address)	((mm)->pgd + pgd_index(address))
+
+/*
+ * Find an entry in a kernel pagetable directory.
+ */
+#define pgd_offset_k(address)	pgd_offset(&init_mm, address)
+
+/*
+ * Find an entry in the second-level pagetable.
+ */
+static inline pmd_t *pmd_offset(pgd_t *pgd, unsigned long address)
+{
+	return (pmd_t *) pgd;
+}
+
+/*
+ * Find an entry in the third-level pagetable.
+ */
+#define __pte_offset(address)	((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define pte_offset_kernel(dir, address) \
+	((pte_t *) __pmd_page(*(dir)) + __pte_offset(address))
+
+/*
+ * Disable caching for page at given kernel virtual address.
+ */
+static inline void nocache_page(void *vaddr)
+{
+	pgd_t *dir;
+	pmd_t *pmdp;
+	pte_t *ptep;
+	unsigned long addr = (unsigned long) vaddr;
+
+	dir = pgd_offset_k(addr);
+	pmdp = pmd_offset(dir, addr);
+	ptep = pte_offset_kernel(pmdp, addr);
+	*ptep = pte_mknocache(*ptep);
+}
+
+/*
+ * Enable caching for page at given kernel virtual address.
+ */
+static inline void cache_page(void *vaddr)
+{
+	pgd_t *dir;
+	pmd_t *pmdp;
+	pte_t *ptep;
+	unsigned long addr = (unsigned long) vaddr;
+
+	dir = pgd_offset_k(addr);
+	pmdp = pmd_offset(dir, addr);
+	ptep = pte_offset_kernel(pmdp, addr);
+	*ptep = pte_mkcache(*ptep);
+}
+
+#define PTE_FILE_MAX_BITS	21
+#define PTE_FILE_SHIFT		11
+
+static inline unsigned long pte_to_pgoff(pte_t pte)
+{
+	return pte_val(pte) >> PTE_FILE_SHIFT;
+}
+
+static inline pte_t pgoff_to_pte(unsigned pgoff)
+{
+	return __pte((pgoff << PTE_FILE_SHIFT) + CF_PAGE_FILE);
+}
+
+/*
+ * Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e))
+ */
+#define __swp_type(x)		((x).val & 0xFF)
+#define __swp_offset(x)		((x).val >> PTE_FILE_SHIFT)
+#define __swp_entry(typ, off)	((swp_entry_t) { (typ) | \
+					(off << PTE_FILE_SHIFT) })
+#define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
+#define __swp_entry_to_pte(x)	(__pte((x).val))
+
+#define pmd_page(pmd)		(pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT))
+
+#define pte_offset_map(pmdp, addr) ((pte_t *)__pmd_page(*pmdp) + \
+				       __pte_offset(addr))
+#define pte_unmap(pte)		((void) 0)
+#define pfn_pte(pfn, prot)	__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
+#define pte_pfn(pte)		(pte_val(pte) >> PAGE_SHIFT)
+
+#endif	/* !__ASSEMBLY__ */
+#endif	/* _MCF_PGTABLE_H */

arch/m68k/include/asm/mcfmmu.h

@@ -0,0 +1,112 @@
+/*
+ *	mcfmmu.h -- definitions for the ColdFire v4e MMU
+ *
+ *	(C) Copyright 2011,  Greg Ungerer <gerg@uclinux.org>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef	MCFMMU_H
+#define	MCFMMU_H
+
+/*
+ *	The MMU support registers are mapped into the address space using
+ *	the processor MMUBASE register. We used a fixed address for mapping,
+ *	there doesn't seem any need to make this configurable yet.
+ */
+#define	MMUBASE		0xfe000000
+
+/*
+ *	The support registers of the MMU. Names are the sames as those
+ *	used in the Freescale v4e documentation.
+ */
+#define	MMUCR		(MMUBASE + 0x00)	/* Control register */
+#define	MMUOR		(MMUBASE + 0x04)	/* Operation register */
+#define	MMUSR		(MMUBASE + 0x08)	/* Status register */
+#define	MMUAR		(MMUBASE + 0x10)	/* TLB Address register */
+#define	MMUTR		(MMUBASE + 0x14)	/* TLB Tag register */
+#define	MMUDR		(MMUBASE + 0x18)	/* TLB Data register */
+
+/*
+ *	MMU Control register bit flags
+ */
+#define	MMUCR_EN	0x00000001		/* Virtual mode enable */
+#define	MMUCR_ASM	0x00000002		/* Address space mode */
+
+/*
+ *	MMU Operation register.
+ */
+#define	MMUOR_UAA	0x00000001		/* Update allocatiom address */
+#define	MMUOR_ACC	0x00000002		/* TLB access */
+#define	MMUOR_RD	0x00000004		/* TLB access read */
+#define	MMUOR_WR	0x00000000		/* TLB access write */
+#define	MMUOR_ADR	0x00000008		/* TLB address select */
+#define	MMUOR_ITLB	0x00000010		/* ITLB operation */
+#define	MMUOR_CAS	0x00000020		/* Clear non-locked ASID TLBs */
+#define	MMUOR_CNL	0x00000040		/* Clear non-locked TLBs */
+#define	MMUOR_CA	0x00000080		/* Clear all TLBs */
+#define	MMUOR_STLB	0x00000100		/* Search TLBs */
+#define	MMUOR_AAN	16			/* TLB allocation address */
+#define	MMUOR_AAMASK	0xffff0000		/* AA mask */
+
+/*
+ *	MMU Status register.
+ */
+#define	MMUSR_HIT	0x00000002		/* Search TLB hit */
+#define	MMUSR_WF	0x00000008		/* Write access fault */
+#define	MMUSR_RF	0x00000010		/* Read access fault */
+#define	MMUSR_SPF	0x00000020		/* Supervisor protect fault */
+
+/*
+ *	MMU Read/Write Tag register.
+ */
+#define	MMUTR_V		0x00000001		/* Valid */
+#define	MMUTR_SG	0x00000002		/* Shared global */
+#define	MMUTR_IDN	2			/* Address Space ID */
+#define	MMUTR_IDMASK	0x000003fc		/* ASID mask */
+#define	MMUTR_VAN	10			/* Virtual Address */
+#define	MMUTR_VAMASK	0xfffffc00		/* VA mask */
+
+/*
+ *	MMU Read/Write Data register.
+ */
+#define	MMUDR_LK	0x00000002		/* Lock entry */
+#define	MMUDR_X		0x00000004		/* Execute access enable */
+#define	MMUDR_W		0x00000008		/* Write access enable */
+#define	MMUDR_R		0x00000010		/* Read access enable */
+#define	MMUDR_SP	0x00000020		/* Supervisor access enable */
+#define	MMUDR_CM_CWT	0x00000000		/* Cachable write thru */
+#define	MMUDR_CM_CCB	0x00000040		/* Cachable copy back */
+#define	MMUDR_CM_NCP	0x00000080		/* Non-cachable precise */
+#define	MMUDR_CM_NCI	0x000000c0		/* Non-cachable imprecise */
+#define	MMUDR_SZ_1MB	0x00000000		/* 1MB page size */
+#define	MMUDR_SZ_4KB	0x00000100		/* 4kB page size */
+#define	MMUDR_SZ_8KB	0x00000200		/* 8kB page size */
+#define	MMUDR_SZ_1KB	0x00000300		/* 1kB page size */
+#define	MMUDR_PAN	10			/* Physical address */
+#define	MMUDR_PAMASK	0xfffffc00		/* PA mask */
+
+#ifndef __ASSEMBLY__
+
+/*
+ *	Simple access functions for the MMU registers. Nothing fancy
+ *	currently required, just simple 32bit access.
+ */
+static inline u32 mmu_read(u32 a)
+{
+	return *((volatile u32 *) a);
+}
+
+static inline void mmu_write(u32 a, u32 v)
+{
+	*((volatile u32 *) a) = v;
+	__asm__ __volatile__ ("nop");
+}
+
+int cf_tlb_miss(struct pt_regs *regs, int write, int dtlb, int extension_word);
+
+#endif
+
+#endif	/* MCFMMU_H */

arch/m68k/include/asm/mmu_context.h

@@ -8,7 +8,206 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 }
 
 #ifdef CONFIG_MMU
-#ifndef CONFIG_SUN3
+
+#if defined(CONFIG_COLDFIRE)
+
+#include <asm/atomic.h>
+#include <asm/bitops.h>
+#include <asm/mcfmmu.h>
+#include <asm/mmu.h>
+
+#define NO_CONTEXT		256
+#define LAST_CONTEXT		255
+#define FIRST_CONTEXT		1
+
+extern unsigned long context_map[];
+extern mm_context_t next_mmu_context;
+
+extern atomic_t nr_free_contexts;
+extern struct mm_struct *context_mm[LAST_CONTEXT+1];
+extern void steal_context(void);
+
+static inline void get_mmu_context(struct mm_struct *mm)
+{
+	mm_context_t ctx;
+
+	if (mm->context != NO_CONTEXT)
+		return;
+	while (atomic_dec_and_test_lt(&nr_free_contexts)) {
+		atomic_inc(&nr_free_contexts);
+		steal_context();
+	}
+	ctx = next_mmu_context;
+	while (test_and_set_bit(ctx, context_map)) {
+		ctx = find_next_zero_bit(context_map, LAST_CONTEXT+1, ctx);
+		if (ctx > LAST_CONTEXT)
+			ctx = 0;
+	}
+	next_mmu_context = (ctx + 1) & LAST_CONTEXT;
+	mm->context = ctx;
+	context_mm[ctx] = mm;
+}
+
+/*
+ * Set up the context for a new address space.
+ */
+#define init_new_context(tsk, mm)	(((mm)->context = NO_CONTEXT), 0)
+
+/*
+ * We're finished using the context for an address space.
+ */
+static inline void destroy_context(struct mm_struct *mm)
+{
+	if (mm->context != NO_CONTEXT) {
+		clear_bit(mm->context, context_map);
+		mm->context = NO_CONTEXT;
+		atomic_inc(&nr_free_contexts);
+	}
+}
+
+static inline void set_context(mm_context_t context, pgd_t *pgd)
+{
+	__asm__ __volatile__ ("movec %0,%%asid" : : "d" (context));
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+	struct task_struct *tsk)
+{
+	get_mmu_context(tsk->mm);
+	set_context(tsk->mm->context, next->pgd);
+}
+
+/*
+ * After we have set current->mm to a new value, this activates
+ * the context for the new mm so we see the new mappings.
+ */
+static inline void activate_mm(struct mm_struct *active_mm,
+	struct mm_struct *mm)
+{
+	get_mmu_context(mm);
+	set_context(mm->context, mm->pgd);
+}
+
+#define deactivate_mm(tsk, mm) do { } while (0)
+
+extern void mmu_context_init(void);
+#define prepare_arch_switch(next) load_ksp_mmu(next)
+
+static inline void load_ksp_mmu(struct task_struct *task)
+{
+	unsigned long flags;
+	struct mm_struct *mm;
+	int asid;
+	pgd_t *pgd;
+	pmd_t *pmd;
+	pte_t *pte;
+	unsigned long mmuar;
+
+	local_irq_save(flags);
+	mmuar = task->thread.ksp;
+
+	/* Search for a valid TLB entry, if one is found, don't remap */
+	mmu_write(MMUAR, mmuar);
+	mmu_write(MMUOR, MMUOR_STLB | MMUOR_ADR);
+	if (mmu_read(MMUSR) & MMUSR_HIT)
+		goto end;
+
+	if (mmuar >= PAGE_OFFSET) {
+		mm = &init_mm;
+	} else {
+		pr_info("load_ksp_mmu: non-kernel mm found: 0x%p\n", task->mm);
+		mm = task->mm;
+	}
+
+	if (!mm)
+		goto bug;
+
+	pgd = pgd_offset(mm, mmuar);
+	if (pgd_none(*pgd))
+		goto bug;
+
+	pmd = pmd_offset(pgd, mmuar);
+	if (pmd_none(*pmd))
+		goto bug;
+
+	pte = (mmuar >= PAGE_OFFSET) ? pte_offset_kernel(pmd, mmuar)
+				     : pte_offset_map(pmd, mmuar);
+	if (pte_none(*pte) || !pte_present(*pte))
+		goto bug;
+
+	set_pte(pte, pte_mkyoung(*pte));
+	asid = mm->context & 0xff;
+	if (!pte_dirty(*pte) && mmuar <= PAGE_OFFSET)
+		set_pte(pte, pte_wrprotect(*pte));
+
+	mmu_write(MMUTR, (mmuar & PAGE_MASK) | (asid << MMUTR_IDN) |
+		(((int)(pte->pte) & (int)CF_PAGE_MMUTR_MASK)
+		>> CF_PAGE_MMUTR_SHIFT) | MMUTR_V);
+
+	mmu_write(MMUDR, (pte_val(*pte) & PAGE_MASK) |
+		((pte->pte) & CF_PAGE_MMUDR_MASK) | MMUDR_SZ_8KB | MMUDR_X);
+
+	mmu_write(MMUOR, MMUOR_ACC | MMUOR_UAA);
+
+	goto end;
+
+bug:
+	pr_info("ksp load failed: mm=0x%p ksp=0x08%lx\n", mm, mmuar);
+end:
+	local_irq_restore(flags);
+}
+
+#elif defined(CONFIG_SUN3)
+#include <asm/sun3mmu.h>
+#include <linux/sched.h>
+
+extern unsigned long get_free_context(struct mm_struct *mm);
+extern void clear_context(unsigned long context);
+
+/* set the context for a new task to unmapped */
+static inline int init_new_context(struct task_struct *tsk,
+				   struct mm_struct *mm)
+{
+	mm->context = SUN3_INVALID_CONTEXT;
+	return 0;
+}
+
+/* find the context given to this process, and if it hasn't already
+   got one, go get one for it. */
+static inline void get_mmu_context(struct mm_struct *mm)
+{
+	if (mm->context == SUN3_INVALID_CONTEXT)
+		mm->context = get_free_context(mm);
+}
+
+/* flush context if allocated... */
+static inline void destroy_context(struct mm_struct *mm)
+{
+	if (mm->context != SUN3_INVALID_CONTEXT)
+		clear_context(mm->context);
+}
+
+static inline void activate_context(struct mm_struct *mm)
+{
+	get_mmu_context(mm);
+	sun3_put_context(mm->context);
+}
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+			     struct task_struct *tsk)
+{
+	activate_context(tsk->mm);
+}
+
+#define deactivate_mm(tsk, mm)	do { } while (0)
+
+static inline void activate_mm(struct mm_struct *prev_mm,
+			       struct mm_struct *next_mm)
+{
+	activate_context(next_mm);
+}
+
+#else
 
 #include <asm/setup.h>
 #include <asm/page.h>
@@ -103,55 +302,8 @@ static inline void activate_mm(struct mm_struct *prev_mm,
 		switch_mm_0460(next_mm);
 }
 
-#else  /* CONFIG_SUN3 */
-#include <asm/sun3mmu.h>
-#include <linux/sched.h>
-
-extern unsigned long get_free_context(struct mm_struct *mm);
-extern void clear_context(unsigned long context);
-
-/* set the context for a new task to unmapped */
-static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
-	mm->context = SUN3_INVALID_CONTEXT;
-	return 0;
-}
-
-/* find the context given to this process, and if it hasn't already
-   got one, go get one for it. */
-static inline void get_mmu_context(struct mm_struct *mm)
-{
-	if(mm->context == SUN3_INVALID_CONTEXT)
-		mm->context = get_free_context(mm);
-}
-
-/* flush context if allocated... */
-static inline void destroy_context(struct mm_struct *mm)
-{
-	if(mm->context != SUN3_INVALID_CONTEXT)
-		clear_context(mm->context);
-}
-
-static inline void activate_context(struct mm_struct *mm)
-{
-	get_mmu_context(mm);
-	sun3_put_context(mm->context);
-}
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk)
-{
-	activate_context(tsk->mm);
-}
-
-#define deactivate_mm(tsk,mm)	do { } while (0)
-
-static inline void activate_mm(struct mm_struct *prev_mm,
-			       struct mm_struct *next_mm)
-{
-	activate_context(next_mm);
-}
-
 #endif
+
 #else /* !CONFIG_MMU */
 
 static inline int init_new_context(struct task_struct *tsk, struct mm_struct *mm)

arch/m68k/include/asm/motorola_pgtable.h

@@ -8,6 +8,7 @@
 #define _PAGE_PRESENT	0x001
 #define _PAGE_SHORT	0x002
 #define _PAGE_RONLY	0x004
+#define _PAGE_READWRITE	0x000
 #define _PAGE_ACCESSED	0x008
 #define _PAGE_DIRTY	0x010
 #define _PAGE_SUPER	0x080	/* 68040 supervisor only */

arch/m68k/include/asm/page.h

@@ -6,10 +6,10 @@
 #include <asm/page_offset.h>
 
 /* PAGE_SHIFT determines the page size */
-#ifndef CONFIG_SUN3
-#define PAGE_SHIFT	(12)
+#if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE)
+#define PAGE_SHIFT	13
 #else
-#define PAGE_SHIFT	(13)
+#define PAGE_SHIFT	12
 #endif
 #define PAGE_SIZE	(_AC(1, UL) << PAGE_SHIFT)
 #define PAGE_MASK	(~(PAGE_SIZE-1))
@@ -36,6 +36,10 @@ typedef struct page *pgtable_t;
 #define __pgd(x)	((pgd_t) { (x) } )
 #define __pgprot(x)	((pgprot_t) { (x) } )
 
+extern unsigned long _rambase;
+extern unsigned long _ramstart;
+extern unsigned long _ramend;
+
 #endif /* !__ASSEMBLY__ */
 
 #ifdef CONFIG_MMU

arch/m68k/include/asm/page_no.h

@@ -5,9 +5,6 @@
  
 extern unsigned long memory_start;
 extern unsigned long memory_end;
-extern unsigned long _rambase;
-extern unsigned long _ramstart;
-extern unsigned long _ramend;
 
 #define get_user_page(vaddr)		__get_free_page(GFP_KERNEL)
 #define free_user_page(page, addr)	free_page(addr)

arch/m68k/include/asm/page_offset.h

@@ -1,11 +1,9 @@
 /* This handles the memory map.. */
 
-#ifdef CONFIG_MMU
-#ifndef CONFIG_SUN3
-#define PAGE_OFFSET_RAW		0x00000000
-#else
+#if defined(CONFIG_RAMBASE)
+#define PAGE_OFFSET_RAW		CONFIG_RAMBASE
+#elif defined(CONFIG_SUN3)
 #define PAGE_OFFSET_RAW		0x0E000000
-#endif
 #else
-#define	PAGE_OFFSET_RAW		CONFIG_RAMBASE
+#define PAGE_OFFSET_RAW		0x00000000
 #endif

arch/m68k/include/asm/pgalloc.h

@@ -7,7 +7,9 @@
 
 #ifdef CONFIG_MMU
 #include <asm/virtconvert.h>
-#ifdef CONFIG_SUN3
+#if defined(CONFIG_COLDFIRE)
+#include <asm/mcf_pgalloc.h>
+#elif defined(CONFIG_SUN3)
 #include <asm/sun3_pgalloc.h>
 #else
 #include <asm/motorola_pgalloc.h>

arch/m68k/include/asm/pgtable_mm.h

@@ -40,6 +40,8 @@
 /* PGDIR_SHIFT determines what a third-level page table entry can map */
 #ifdef CONFIG_SUN3
 #define PGDIR_SHIFT     17
+#elif defined(CONFIG_COLDFIRE)
+#define PGDIR_SHIFT     22
 #else
 #define PGDIR_SHIFT	25
 #endif
@@ -54,6 +56,10 @@
 #define PTRS_PER_PTE   16
 #define PTRS_PER_PMD   1
 #define PTRS_PER_PGD   2048
+#elif defined(CONFIG_COLDFIRE)
+#define PTRS_PER_PTE	512
+#define PTRS_PER_PMD	1
+#define PTRS_PER_PGD	1024
 #else
 #define PTRS_PER_PTE	1024
 #define PTRS_PER_PMD	8
@@ -66,12 +72,22 @@
 #ifdef CONFIG_SUN3
 #define KMAP_START     0x0DC00000
 #define KMAP_END       0x0E000000
+#elif defined(CONFIG_COLDFIRE)
+#define KMAP_START	0xe0000000
+#define KMAP_END	0xf0000000
 #else
 #define	KMAP_START	0xd0000000
 #define	KMAP_END	0xf0000000
 #endif
 
-#ifndef CONFIG_SUN3
+#ifdef CONFIG_SUN3
+extern unsigned long m68k_vmalloc_end;
+#define VMALLOC_START 0x0f800000
+#define VMALLOC_END m68k_vmalloc_end
+#elif defined(CONFIG_COLDFIRE)
+#define VMALLOC_START	0xd0000000
+#define VMALLOC_END	0xe0000000
+#else
 /* Just any arbitrary offset to the start of the vmalloc VM area: the
  * current 8MB value just means that there will be a 8MB "hole" after the
  * physical memory until the kernel virtual memory starts.  That means that
@@ -82,11 +98,7 @@
 #define VMALLOC_OFFSET	(8*1024*1024)
 #define VMALLOC_START (((unsigned long) high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
 #define VMALLOC_END KMAP_START
-#else
-extern unsigned long m68k_vmalloc_end;
-#define VMALLOC_START 0x0f800000
-#define VMALLOC_END m68k_vmalloc_end
-#endif /* CONFIG_SUN3 */
+#endif
 
 /* zero page used for uninitialized stuff */
 extern void *empty_zero_page;
@@ -130,6 +142,8 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 
 #ifdef CONFIG_SUN3
 #include <asm/sun3_pgtable.h>
+#elif defined(CONFIG_COLDFIRE)
+#include <asm/mcf_pgtable.h>
 #else
 #include <asm/motorola_pgtable.h>
 #endif
@@ -138,6 +152,9 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 /*
  * Macro to mark a page protection value as "uncacheable".
  */
+#ifdef CONFIG_COLDFIRE
+# define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) | CF_PAGE_NOCACHE))
+#else
 #ifdef SUN3_PAGE_NOCACHE
 # define __SUN3_PAGE_NOCACHE	SUN3_PAGE_NOCACHE
 #else
@@ -152,6 +169,7 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 	    ? (__pgprot((pgprot_val(prot) & _CACHEMASK040) | _PAGE_NOCACHE_S))	\
 	    : (prot)))
 
+#endif /* CONFIG_COLDFIRE */
 #include <asm-generic/pgtable.h>
 #endif /* !__ASSEMBLY__ */
 

arch/m68k/include/asm/processor.h

@@ -48,10 +48,12 @@ static inline void wrusp(unsigned long usp)
  * so don't change it unless you know what you are doing.
  */
 #ifdef CONFIG_MMU
-#ifndef CONFIG_SUN3
-#define TASK_SIZE	(0xF0000000UL)
-#else
+#if defined(CONFIG_COLDFIRE)
+#define TASK_SIZE	(0xC0000000UL)
+#elif defined(CONFIG_SUN3)
 #define TASK_SIZE	(0x0E000000UL)
+#else
+#define TASK_SIZE	(0xF0000000UL)
 #endif
 #else
 #define TASK_SIZE	(0xFFFFFFFFUL)
@@ -66,10 +68,12 @@ static inline void wrusp(unsigned long usp)
  * space during mmap's.
  */
 #ifdef CONFIG_MMU
-#ifndef CONFIG_SUN3
-#define TASK_UNMAPPED_BASE	0xC0000000UL
-#else
+#if defined(CONFIG_COLDFIRE)
+#define TASK_UNMAPPED_BASE	0x60000000UL
+#elif defined(CONFIG_SUN3)
 #define TASK_UNMAPPED_BASE	0x0A000000UL
+#else
+#define TASK_UNMAPPED_BASE	0xC0000000UL
 #endif
 #define TASK_UNMAPPED_ALIGN(addr, off)	PAGE_ALIGN(addr)
 #else
@@ -88,14 +92,12 @@ struct thread_struct {
 	unsigned long  fp[8*3];
 	unsigned long  fpcntl[3];	/* fp control regs */
 	unsigned char  fpstate[FPSTATESIZE];  /* floating point state */
-	struct thread_info info;
 };
 
 #define INIT_THREAD  {							\
 	.ksp	= sizeof(init_stack) + (unsigned long) init_stack,	\
 	.sr	= PS_S,							\
 	.fs	= __KERNEL_DS,						\
-	.info	= INIT_THREAD_INFO(init_task),				\
 }
 
 #ifdef CONFIG_MMU

arch/m68k/include/asm/segment.h

@@ -22,23 +22,26 @@ typedef struct {
 } mm_segment_t;
 
 #define MAKE_MM_SEG(s)	((mm_segment_t) { (s) })
-#define USER_DS		MAKE_MM_SEG(__USER_DS)
-#define KERNEL_DS	MAKE_MM_SEG(__KERNEL_DS)
 
+#ifdef CONFIG_CPU_HAS_ADDRESS_SPACES
 /*
  * Get/set the SFC/DFC registers for MOVES instructions
  */
+#define USER_DS		MAKE_MM_SEG(__USER_DS)
+#define KERNEL_DS	MAKE_MM_SEG(__KERNEL_DS)
 
 static inline mm_segment_t get_fs(void)
 {
-#ifdef CONFIG_MMU
 	mm_segment_t _v;
 	__asm__ ("movec %/dfc,%0":"=r" (_v.seg):);
-
 	return _v;
-#else
-	return USER_DS;
-#endif
+}
+
+static inline void set_fs(mm_segment_t val)
+{
+	__asm__ __volatile__ ("movec %0,%/sfc\n\t"
+			      "movec %0,%/dfc\n\t"
+			      : /* no outputs */ : "r" (val.seg) : "memory");
 }
 
 static inline mm_segment_t get_ds(void)
@@ -47,14 +50,13 @@ static inline mm_segment_t get_ds(void)
     return KERNEL_DS;
 }
 
-static inline void set_fs(mm_segment_t val)
-{
-#ifdef CONFIG_MMU
-	__asm__ __volatile__ ("movec %0,%/sfc\n\t"
-			      "movec %0,%/dfc\n\t"
-			      : /* no outputs */ : "r" (val.seg) : "memory");
+#else
+#define USER_DS		MAKE_MM_SEG(TASK_SIZE)
+#define KERNEL_DS	MAKE_MM_SEG(0xFFFFFFFF)
+#define get_ds()	(KERNEL_DS)
+#define get_fs()	(current_thread_info()->addr_limit)
+#define set_fs(x)	(current_thread_info()->addr_limit = (x))
 #endif
-}
 
 #define segment_eq(a,b)	((a).seg == (b).seg)
 

arch/m68k/include/asm/setup.h

@@ -40,6 +40,7 @@
 #define MACH_HP300    9
 #define MACH_Q40     10
 #define MACH_SUN3X   11
+#define MACH_M54XX   12
 
 #define COMMAND_LINE_SIZE 256
 
@@ -211,23 +212,27 @@ extern unsigned long m68k_machtype;
 #define CPUB_68030     1
 #define CPUB_68040     2
 #define CPUB_68060     3
+#define CPUB_COLDFIRE  4
 
 #define CPU_68020      (1<<CPUB_68020)
 #define CPU_68030      (1<<CPUB_68030)
 #define CPU_68040      (1<<CPUB_68040)
 #define CPU_68060      (1<<CPUB_68060)
+#define CPU_COLDFIRE   (1<<CPUB_COLDFIRE)
 
 #define FPUB_68881     0
 #define FPUB_68882     1
 #define FPUB_68040     2                       /* Internal FPU */
 #define FPUB_68060     3                       /* Internal FPU */
 #define FPUB_SUNFPA    4                       /* Sun-3 FPA */
+#define FPUB_COLDFIRE  5                       /* ColdFire FPU */
 
 #define FPU_68881      (1<<FPUB_68881)
 #define FPU_68882      (1<<FPUB_68882)
 #define FPU_68040      (1<<FPUB_68040)
 #define FPU_68060      (1<<FPUB_68060)
 #define FPU_SUNFPA     (1<<FPUB_SUNFPA)
+#define FPU_COLDFIRE   (1<<FPUB_COLDFIRE)
 
 #define MMUB_68851     0
 #define MMUB_68030     1                       /* Internal MMU */
@@ -235,6 +240,7 @@ extern unsigned long m68k_machtype;
 #define MMUB_68060     3                       /* Internal MMU */
 #define MMUB_APOLLO    4                       /* Custom Apollo */
 #define MMUB_SUN3      5                       /* Custom Sun-3 */
+#define MMUB_COLDFIRE  6                       /* Internal MMU */
 
 #define MMU_68851      (1<<MMUB_68851)
 #define MMU_68030      (1<<MMUB_68030)
@@ -242,6 +248,7 @@ extern unsigned long m68k_machtype;
 #define MMU_68060      (1<<MMUB_68060)
 #define MMU_SUN3       (1<<MMUB_SUN3)
 #define MMU_APOLLO     (1<<MMUB_APOLLO)
+#define MMU_COLDFIRE   (1<<MMUB_COLDFIRE)
 
 #ifdef __KERNEL__
 
@@ -341,6 +348,13 @@ extern int m68k_is040or060;
 #  endif
 #endif
 
+#if !defined(CONFIG_COLDFIRE)
+#  define CPU_IS_COLDFIRE (0)
+#else
+#  define CPU_IS_COLDFIRE (1)
+#  define MMU_IS_COLDFIRE (1)
+#endif
+
 #define CPU_TYPE (m68k_cputype)
 
 #ifdef CONFIG_M68KFPU_EMU

arch/m68k/include/asm/sigcontext.h

@@ -15,11 +15,7 @@ struct sigcontext {
 	unsigned long  sc_pc;
 	unsigned short sc_formatvec;
 #ifndef __uClinux__
-# ifdef __mcoldfire__
-	unsigned long  sc_fpregs[2][2];	/* room for two fp registers */
-# else
 	unsigned long  sc_fpregs[2*3];  /* room for two fp registers */
-# endif
 	unsigned long  sc_fpcntl[3];
 	unsigned char  sc_fpstate[216];
 #endif

arch/m68k/include/asm/thread_info.h

@@ -3,6 +3,7 @@
 
 #include <asm/types.h>
 #include <asm/page.h>
+#include <asm/segment.h>
 
 /*
  * On machines with 4k pages we default to an 8k thread size, though we
@@ -26,6 +27,7 @@ struct thread_info {
 	struct task_struct	*task;		/* main task structure */
 	unsigned long		flags;
 	struct exec_domain	*exec_domain;	/* execution domain */
+	mm_segment_t		addr_limit;	/* thread address space */
 	int			preempt_count;	/* 0 => preemptable, <0 => BUG */
 	__u32			cpu;		/* should always be 0 on m68k */
 	unsigned long		tp_value;	/* thread pointer */
@@ -39,6 +41,7 @@ struct thread_info {
 {						\
 	.task		= &tsk,			\
 	.exec_domain	= &default_exec_domain,	\
+	.addr_limit	= KERNEL_DS,		\
 	.preempt_count	= INIT_PREEMPT_COUNT,	\
 	.restart_block = {			\
 		.fn = do_no_restart_syscall,	\
@@ -47,34 +50,6 @@ struct thread_info {
 
 #define init_stack		(init_thread_union.stack)
 
-#ifdef CONFIG_MMU
-
-#ifndef __ASSEMBLY__
-#include <asm/current.h>
-#endif
-
-#ifdef ASM_OFFSETS_C
-#define task_thread_info(tsk)	((struct thread_info *) NULL)
-#else
-#include <asm/asm-offsets.h>
-#define task_thread_info(tsk)	((struct thread_info *)((char *)tsk+TASK_TINFO))
-#endif
-
-#define init_thread_info	(init_task.thread.info)
-#define task_stack_page(tsk)	((tsk)->stack)
-#define current_thread_info()	task_thread_info(current)
-
-#define __HAVE_THREAD_FUNCTIONS
-
-#define setup_thread_stack(p, org) ({			\
-	*(struct task_struct **)(p)->stack = (p);	\
-	task_thread_info(p)->task = (p);		\
-})
-
-#define end_of_stack(p)		((unsigned long *)(p)->stack + 1)
-
-#else /* !CONFIG_MMU */
-
 #ifndef __ASSEMBLY__
 /* how to get the thread information struct from C */
 static inline struct thread_info *current_thread_info(void)
@@ -92,8 +67,6 @@ static inline struct thread_info *current_thread_info(void)
 
 #define init_thread_info	(init_thread_union.thread_info)
 
-#endif /* CONFIG_MMU */
-
 /* entry.S relies on these definitions!
  * bits 0-7 are tested at every exception exit
  * bits 8-15 are also tested at syscall exit

arch/m68k/include/asm/tlbflush.h

@@ -5,10 +5,13 @@
 #ifndef CONFIG_SUN3
 
 #include <asm/current.h>
+#include <asm/mcfmmu.h>
 
 static inline void flush_tlb_kernel_page(void *addr)
 {
-	if (CPU_IS_040_OR_060) {
+	if (CPU_IS_COLDFIRE) {
+		mmu_write(MMUOR, MMUOR_CNL);
+	} else if (CPU_IS_040_OR_060) {
 		mm_segment_t old_fs = get_fs();
 		set_fs(KERNEL_DS);
 		__asm__ __volatile__(".chip 68040\n\t"
@@ -25,12 +28,15 @@ static inline void flush_tlb_kernel_page(void *addr)
  */
 static inline void __flush_tlb(void)
 {
-	if (CPU_IS_040_OR_060)
+	if (CPU_IS_COLDFIRE) {
+		mmu_write(MMUOR, MMUOR_CNL);
+	} else if (CPU_IS_040_OR_060) {
 		__asm__ __volatile__(".chip 68040\n\t"
 				     "pflushan\n\t"
 				     ".chip 68k");
-	else if (CPU_IS_020_OR_030)
+	} else if (CPU_IS_020_OR_030) {
 		__asm__ __volatile__("pflush #0,#4");
+	}
 }
 
 static inline void __flush_tlb040_one(unsigned long addr)
@@ -43,7 +49,9 @@ static inline void __flush_tlb040_one(unsigned long addr)
 
 static inline void __flush_tlb_one(unsigned long addr)
 {
-	if (CPU_IS_040_OR_060)
+	if (CPU_IS_COLDFIRE)
+		mmu_write(MMUOR, MMUOR_CNL);
+	else if (CPU_IS_040_OR_060)
 		__flush_tlb040_one(addr);
 	else if (CPU_IS_020_OR_030)
 		__asm__ __volatile__("pflush #0,#4,(%0)" : : "a" (addr));
@@ -56,12 +64,15 @@ static inline void __flush_tlb_one(unsigned long addr)
  */
 static inline void flush_tlb_all(void)
 {
-	if (CPU_IS_040_OR_060)
+	if (CPU_IS_COLDFIRE) {
+		mmu_write(MMUOR, MMUOR_CNL);
+	} else if (CPU_IS_040_OR_060) {
 		__asm__ __volatile__(".chip 68040\n\t"
 				     "pflusha\n\t"
 				     ".chip 68k");
-	else if (CPU_IS_020_OR_030)
+	} else if (CPU_IS_020_OR_030) {
 		__asm__ __volatile__("pflusha");
+	}
 }
 
 static inline void flush_tlb_mm(struct mm_struct *mm)

arch/m68k/include/asm/traps.h

@@ -18,6 +18,7 @@
 
 typedef void (*e_vector)(void);
 extern e_vector vectors[];
+extern e_vector *_ramvec;
 
 asmlinkage void auto_inthandler(void);
 asmlinkage void user_inthandler(void);

arch/m68k/include/asm/uaccess_mm.h

@@ -20,6 +20,22 @@ static inline int access_ok(int type, const void __user *addr,
 	return 1;
 }
 
+/*
+ * Not all varients of the 68k family support the notion of address spaces.
+ * The traditional 680x0 parts do, and they use the sfc/dfc registers and
+ * the "moves" instruction to access user space from kernel space. Other
+ * family members like ColdFire don't support this, and only have a single
+ * address space, and use the usual "move" instruction for user space access.
+ *
+ * Outside of this difference the user space access functions are the same.
+ * So lets keep the code simple and just define in what we need to use.
+ */
+#ifdef CONFIG_CPU_HAS_ADDRESS_SPACES
+#define	MOVES	"moves"
+#else
+#define	MOVES	"move"
+#endif
+
 /*
  * The exception table consists of pairs of addresses: the first is the
  * address of an instruction that is allowed to fault, and the second is
@@ -43,7 +59,7 @@ extern int __get_user_bad(void);
 
 #define __put_user_asm(res, x, ptr, bwl, reg, err)	\
 asm volatile ("\n"					\
-	"1:	moves."#bwl"	%2,%1\n"		\
+	"1:	"MOVES"."#bwl"	%2,%1\n"		\
 	"2:\n"						\
 	"	.section .fixup,\"ax\"\n"		\
 	"	.even\n"				\
@@ -83,8 +99,8 @@ asm volatile ("\n"					\
  	    {								\
  		const void __user *__pu_ptr = (ptr);			\
 		asm volatile ("\n"					\
-			"1:	moves.l	%2,(%1)+\n"			\
-			"2:	moves.l	%R2,(%1)\n"			\
+			"1:	"MOVES".l	%2,(%1)+\n"		\
+			"2:	"MOVES".l	%R2,(%1)\n"		\
 			"3:\n"						\
 			"	.section .fixup,\"ax\"\n"		\
 			"	.even\n"				\
@@ -115,12 +131,12 @@ asm volatile ("\n"					\
 #define __get_user_asm(res, x, ptr, type, bwl, reg, err) ({	\
 	type __gu_val;						\
 	asm volatile ("\n"					\
-		"1:	moves."#bwl"	%2,%1\n"		\
+		"1:	"MOVES"."#bwl"	%2,%1\n"		\
 		"2:\n"						\
 		"	.section .fixup,\"ax\"\n"		\
 		"	.even\n"				\
 		"10:	move.l	%3,%0\n"			\
-		"	sub."#bwl"	%1,%1\n"		\
+		"	sub.l	%1,%1\n"			\
 		"	jra	2b\n"				\
 		"	.previous\n"				\
 		"\n"						\
@@ -152,8 +168,8 @@ asm volatile ("\n"					\
  		const void *__gu_ptr = (ptr);				\
  		u64 __gu_val;						\
 		asm volatile ("\n"					\
-			"1:	moves.l	(%2)+,%1\n"			\
-			"2:	moves.l	(%2),%R1\n"			\
+			"1:	"MOVES".l	(%2)+,%1\n"		\
+			"2:	"MOVES".l	(%2),%R1\n"		\
 			"3:\n"						\
 			"	.section .fixup,\"ax\"\n"		\
 			"	.even\n"				\
@@ -188,12 +204,12 @@ unsigned long __generic_copy_to_user(void __user *to, const void *from, unsigned
 
 #define __constant_copy_from_user_asm(res, to, from, tmp, n, s1, s2, s3)\
 	asm volatile ("\n"						\
-		"1:	moves."#s1"	(%2)+,%3\n"			\
+		"1:	"MOVES"."#s1"	(%2)+,%3\n"			\
 		"	move."#s1"	%3,(%1)+\n"			\
-		"2:	moves."#s2"	(%2)+,%3\n"			\
+		"2:	"MOVES"."#s2"	(%2)+,%3\n"			\
 		"	move."#s2"	%3,(%1)+\n"			\
 		"	.ifnc	\""#s3"\",\"\"\n"			\
-		"3:	moves."#s3"	(%2)+,%3\n"			\
+		"3:	"MOVES"."#s3"	(%2)+,%3\n"			\
 		"	move."#s3"	%3,(%1)+\n"			\
 		"	.endif\n"					\
 		"4:\n"							\
@@ -269,13 +285,13 @@ __constant_copy_from_user(void *to, const void __user *from, unsigned long n)
 #define __constant_copy_to_user_asm(res, to, from, tmp, n, s1, s2, s3)	\
 	asm volatile ("\n"						\
 		"	move."#s1"	(%2)+,%3\n"			\
-		"11:	moves."#s1"	%3,(%1)+\n"			\
+		"11:	"MOVES"."#s1"	%3,(%1)+\n"			\
 		"12:	move."#s2"	(%2)+,%3\n"			\
-		"21:	moves."#s2"	%3,(%1)+\n"			\
+		"21:	"MOVES"."#s2"	%3,(%1)+\n"			\
 		"22:\n"							\
 		"	.ifnc	\""#s3"\",\"\"\n"			\
 		"	move."#s3"	(%2)+,%3\n"			\
-		"31:	moves."#s3"	%3,(%1)+\n"			\
+		"31:	"MOVES"."#s3"	%3,(%1)+\n"			\
 		"32:\n"							\
 		"	.endif\n"					\
 		"4:\n"							\

arch/m68k/include/asm/ucontext.h

@@ -7,11 +7,7 @@ typedef greg_t gregset_t[NGREG];
 
 typedef struct fpregset {
 	int f_fpcntl[3];
-#ifdef __mcoldfire__
-	int f_fpregs[8][2];
-#else
 	int f_fpregs[8*3];
-#endif
 } fpregset_t;
 
 struct mcontext {

arch/m68k/kernel/Makefile

@@ -2,19 +2,24 @@
 # Makefile for the linux kernel.
 #
 
-extra-$(CONFIG_MMU)	:= head.o
+extra-$(CONFIG_AMIGA)	:= head.o
+extra-$(CONFIG_ATARI)	:= head.o
+extra-$(CONFIG_MAC)	:= head.o
+extra-$(CONFIG_APOLLO)	:= head.o
+extra-$(CONFIG_VME)	:= head.o
+extra-$(CONFIG_HP300)	:= head.o
+extra-$(CONFIG_Q40)	:= head.o
+extra-$(CONFIG_SUN3X)	:= head.o
 extra-$(CONFIG_SUN3)	:= sun3-head.o
 extra-y			+= vmlinux.lds
 
-obj-y	:= entry.o irq.o m68k_ksyms.o module.o process.o ptrace.o setup.o \
-	   signal.o sys_m68k.o syscalltable.o time.o traps.o
+obj-y	:= entry.o init_task.o irq.o m68k_ksyms.o module.o process.o ptrace.o
+obj-y	+= setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o
 
-obj-$(CONFIG_MMU)	+= ints.o vectors.o
+obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o
+obj-$(CONFIG_MMU_SUN3) += ints.o vectors.o
 
 ifndef CONFIG_MMU_SUN3
-obj-y			+= dma.o
-endif
-ifndef CONFIG_MMU
-obj-y			+= init_task.o
+obj-y	+= dma.o
 endif
 

arch/m68k/kernel/asm-offsets.c

@@ -24,8 +24,7 @@ int main(void)
 	/* offsets into the task struct */
 	DEFINE(TASK_THREAD, offsetof(struct task_struct, thread));
 	DEFINE(TASK_MM, offsetof(struct task_struct, mm));
-	DEFINE(TASK_INFO, offsetof(struct task_struct, thread.info));
-	DEFINE(TASK_TINFO, offsetof(struct task_struct, thread.info));
+	DEFINE(TASK_STACK, offsetof(struct task_struct, stack));
 
 	/* offsets into the thread struct */
 	DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));

arch/m68k/kernel/entry.S

@@ -1,4 +1,4 @@
-#ifdef CONFIG_MMU
+#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
 #include "entry_mm.S"
 #else
 #include "entry_no.S"

arch/m68k/kernel/entry_mm.S

@@ -99,7 +99,8 @@ do_trace_exit:
 	jra	.Lret_from_exception
 
 ENTRY(ret_from_signal)
-	tstb	%curptr@(TASK_INFO+TINFO_FLAGS+2)
+	movel	%curptr@(TASK_STACK),%a1
+	tstb	%a1@(TINFO_FLAGS+2)
 	jge	1f
 	jbsr	syscall_trace
 1:	RESTORE_SWITCH_STACK
@@ -120,11 +121,13 @@ ENTRY(system_call)
 	SAVE_ALL_SYS
 
 	GET_CURRENT(%d1)
+	movel	%d1,%a1
+
 	| save top of frame
 	movel	%sp,%curptr@(TASK_THREAD+THREAD_ESP0)
 
 	| syscall trace?
-	tstb	%curptr@(TASK_INFO+TINFO_FLAGS+2)
+	tstb	%a1@(TINFO_FLAGS+2)
 	jmi	do_trace_entry
 	cmpl	#NR_syscalls,%d0
 	jcc	badsys
@@ -133,7 +136,8 @@ syscall:
 	movel	%d0,%sp@(PT_OFF_D0)	| save the return value
 ret_from_syscall:
 	|oriw	#0x0700,%sr
-	movew	%curptr@(TASK_INFO+TINFO_FLAGS+2),%d0
+	movel	%curptr@(TASK_STACK),%a1
+	movew	%a1@(TINFO_FLAGS+2),%d0
 	jne	syscall_exit_work
 1:	RESTORE_ALL
 
@@ -159,7 +163,8 @@ ENTRY(ret_from_exception)
 	andw	#ALLOWINT,%sr
 
 resume_userspace:
-	moveb	%curptr@(TASK_INFO+TINFO_FLAGS+3),%d0
+	movel	%curptr@(TASK_STACK),%a1
+	moveb	%a1@(TINFO_FLAGS+3),%d0
 	jne	exit_work
 1:	RESTORE_ALL
 
@@ -199,7 +204,8 @@ do_delayed_trace:
 ENTRY(auto_inthandler)
 	SAVE_ALL_INT
 	GET_CURRENT(%d0)
-	addqb	#1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+	movel	%d0,%a1
+	addqb	#1,%a1@(TINFO_PREEMPT+1)
 					|  put exception # in d0
 	bfextu	%sp@(PT_OFF_FORMATVEC){#4,#10},%d0
 	subw	#VEC_SPUR,%d0
@@ -211,7 +217,8 @@ auto_irqhandler_fixup = . + 2
 	addql	#8,%sp			|  pop parameters off stack
 
 ret_from_interrupt:
-	subqb	#1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+	movel	%curptr@(TASK_STACK),%a1
+	subqb	#1,%a1@(TINFO_PREEMPT+1)
 	jeq	ret_from_last_interrupt
 2:	RESTORE_ALL
 
@@ -232,7 +239,8 @@ ret_from_last_interrupt:
 ENTRY(user_inthandler)
 	SAVE_ALL_INT
 	GET_CURRENT(%d0)
-	addqb	#1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+	movel	%d0,%a1
+	addqb	#1,%a1@(TINFO_PREEMPT+1)
 					|  put exception # in d0
 	bfextu	%sp@(PT_OFF_FORMATVEC){#4,#10},%d0
 user_irqvec_fixup = . + 2
@@ -243,7 +251,8 @@ user_irqvec_fixup = . + 2
 	jsr	do_IRQ			|  process the IRQ
 	addql	#8,%sp			|  pop parameters off stack
 
-	subqb	#1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+	movel	%curptr@(TASK_STACK),%a1
+	subqb	#1,%a1@(TINFO_PREEMPT+1)
 	jeq	ret_from_last_interrupt
 	RESTORE_ALL
 
@@ -252,13 +261,15 @@ user_irqvec_fixup = . + 2
 ENTRY(bad_inthandler)
 	SAVE_ALL_INT
 	GET_CURRENT(%d0)
-	addqb	#1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+	movel	%d0,%a1
+	addqb	#1,%a1@(TINFO_PREEMPT+1)
 
 	movel	%sp,%sp@-
 	jsr	handle_badint
 	addql	#4,%sp
 
-	subqb	#1,%curptr@(TASK_INFO+TINFO_PREEMPT+1)
+	movel	%curptr@(TASK_STACK),%a1
+	subqb	#1,%a1@(TINFO_PREEMPT+1)
 	jeq	ret_from_last_interrupt
 	RESTORE_ALL
 

arch/m68k/kernel/entry_no.S

@@ -44,8 +44,7 @@
 
 ENTRY(buserr)
 	SAVE_ALL_INT
-	moveq	#-1,%d0
-	movel	%d0,%sp@(PT_OFF_ORIG_D0)
+	GET_CURRENT(%d0)
 	movel	%sp,%sp@- 		/* stack frame pointer argument */
 	jsr	buserr_c
 	addql	#4,%sp
@@ -53,8 +52,7 @@ ENTRY(buserr)
 
 ENTRY(trap)
 	SAVE_ALL_INT
-	moveq	#-1,%d0
-	movel	%d0,%sp@(PT_OFF_ORIG_D0)
+	GET_CURRENT(%d0)
 	movel	%sp,%sp@- 		/* stack frame pointer argument */
 	jsr	trap_c
 	addql	#4,%sp
@@ -65,8 +63,7 @@ ENTRY(trap)
 .globl dbginterrupt
 ENTRY(dbginterrupt)
 	SAVE_ALL_INT
-	moveq	#-1,%d0
-	movel	%d0,%sp@(PT_OFF_ORIG_D0)
+	GET_CURRENT(%d0)
 	movel	%sp,%sp@- 		/* stack frame pointer argument */
 	jsr	dbginterrupt_c
 	addql	#4,%sp

arch/m68k/kernel/init_task.c

@@ -19,7 +19,6 @@ static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
  *
  * All other task structs will be allocated on slabs in fork.c
  */
-__asm__(".align 4");
 struct task_struct init_task = INIT_TASK(init_task);
 
 EXPORT_SYMBOL(init_task);
@@ -27,7 +26,7 @@ EXPORT_SYMBOL(init_task);
 /*
  * Initial thread structure.
  *
- * We need to make sure that this is 8192-byte aligned due to the
+ * We need to make sure that this is THREAD size aligned due to the
  * way process stacks are handled. This is done by having a special
  * "init_task" linker map entry..
  */

arch/m68k/kernel/m68k_ksyms.c

@@ -14,7 +14,7 @@ EXPORT_SYMBOL(__ashrdi3);
 EXPORT_SYMBOL(__lshrdi3);
 EXPORT_SYMBOL(__muldi3);
 
-#if defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)
+#if defined(CONFIG_CPU_HAS_NO_MULDIV64)
 /*
  * Simpler 68k and ColdFire parts also need a few other gcc functions.
  */

arch/m68k/kernel/process_mm.c

@@ -33,22 +33,6 @@
 #include <asm/setup.h>
 #include <asm/pgtable.h>
 
-/*
- * Initial task/thread structure. Make this a per-architecture thing,
- * because different architectures tend to have different
- * alignment requirements and potentially different initial
- * setup.
- */
-static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
-static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
-union thread_union init_thread_union __init_task_data
-	__attribute__((aligned(THREAD_SIZE))) =
-		{ INIT_THREAD_INFO(init_task) };
-
-/* initial task structure */
-struct task_struct init_task = INIT_TASK(init_task);
-
-EXPORT_SYMBOL(init_task);
 
 asmlinkage void ret_from_fork(void);
 
@@ -188,9 +172,7 @@ void flush_thread(void)
 
 	current->thread.fs = __USER_DS;
 	if (!FPU_IS_EMU)
-		asm volatile (".chip 68k/68881\n\t"
-			      "frestore %0@\n\t"
-			      ".chip 68k" : : "a" (&zero));
+		asm volatile ("frestore %0@" : : "a" (&zero) : "memory");
 }
 
 /*
@@ -264,11 +246,28 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
 		/* Copy the current fpu state */
 		asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory");
 
-		if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2])
-		  asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t"
-				"fmoveml %/fpiar/%/fpcr/%/fpsr,%1"
-				: : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0])
-				: "memory");
+		if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) {
+			if (CPU_IS_COLDFIRE) {
+				asm volatile ("fmovemd %/fp0-%/fp7,%0\n\t"
+					      "fmovel %/fpiar,%1\n\t"
+					      "fmovel %/fpcr,%2\n\t"
+					      "fmovel %/fpsr,%3"
+					      :
+					      : "m" (p->thread.fp[0]),
+						"m" (p->thread.fpcntl[0]),
+						"m" (p->thread.fpcntl[1]),
+						"m" (p->thread.fpcntl[2])
+					      : "memory");
+			} else {
+				asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t"
+					      "fmoveml %/fpiar/%/fpcr/%/fpsr,%1"
+					      :
+					      : "m" (p->thread.fp[0]),
+						"m" (p->thread.fpcntl[0])
+					      : "memory");
+			}
+		}
+
 		/* Restore the state in case the fpu was busy */
 		asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0]));
 	}
@@ -301,12 +300,28 @@ int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu)
 	if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2])
 		return 0;
 
-	asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0"
-		:: "m" (fpu->fpcntl[0])
-		: "memory");
-	asm volatile ("fmovemx %/fp0-%/fp7,%0"
-		:: "m" (fpu->fpregs[0])
-		: "memory");
+	if (CPU_IS_COLDFIRE) {
+		asm volatile ("fmovel %/fpiar,%0\n\t"
+			      "fmovel %/fpcr,%1\n\t"
+			      "fmovel %/fpsr,%2\n\t"
+			      "fmovemd %/fp0-%/fp7,%3"
+			      :
+			      : "m" (fpu->fpcntl[0]),
+				"m" (fpu->fpcntl[1]),
+				"m" (fpu->fpcntl[2]),
+				"m" (fpu->fpregs[0])
+			      : "memory");
+	} else {
+		asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0"
+			      :
+			      : "m" (fpu->fpcntl[0])
+			      : "memory");
+		asm volatile ("fmovemx %/fp0-%/fp7,%0"
+			      :
+			      : "m" (fpu->fpregs[0])
+			      : "memory");
+	}
+
 	return 1;
 }
 EXPORT_SYMBOL(dump_fpu);

arch/m68k/kernel/ptrace_mm.c

@@ -18,6 +18,7 @@
 #include <linux/ptrace.h>
 #include <linux/user.h>
 #include <linux/signal.h>
+#include <linux/tracehook.h>
 
 #include <asm/uaccess.h>
 #include <asm/page.h>
@@ -275,3 +276,20 @@ asmlinkage void syscall_trace(void)
 		current->exit_code = 0;
 	}
 }
+
+#ifdef CONFIG_COLDFIRE
+asmlinkage int syscall_trace_enter(void)
+{
+	int ret = 0;
+
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
+		ret = tracehook_report_syscall_entry(task_pt_regs(current));
+	return ret;
+}
+
+asmlinkage void syscall_trace_leave(void)
+{
+	if (test_thread_flag(TIF_SYSCALL_TRACE))
+		tracehook_report_syscall_exit(task_pt_regs(current), 0);
+}
+#endif /* CONFIG_COLDFIRE */

arch/m68k/kernel/setup_mm.c

@@ -221,7 +221,8 @@ void __init setup_arch(char **cmdline_p)
 #endif
 
 	/* The bootinfo is located right after the kernel bss */
-	m68k_parse_bootinfo((const struct bi_record *)_end);
+	if (!CPU_IS_COLDFIRE)
+		m68k_parse_bootinfo((const struct bi_record *)_end);
 
 	if (CPU_IS_040)
 		m68k_is040or060 = 4;
@@ -235,7 +236,7 @@ void __init setup_arch(char **cmdline_p)
 	 *  with them, we should add a test to check_bugs() below] */
 #ifndef CONFIG_M68KFPU_EMU_ONLY
 	/* clear the fpu if we have one */
-	if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
+	if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) {
 		volatile int zero = 0;
 		asm volatile ("frestore %0" : : "m" (zero));
 	}
@@ -258,6 +259,10 @@ void __init setup_arch(char **cmdline_p)
 	init_mm.end_data = (unsigned long)_edata;
 	init_mm.brk = (unsigned long)_end;
 
+#if defined(CONFIG_BOOTPARAM)
+	strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
+	m68k_command_line[CL_SIZE - 1] = 0;
+#endif /* CONFIG_BOOTPARAM */
 	*cmdline_p = m68k_command_line;
 	memcpy(boot_command_line, *cmdline_p, CL_SIZE);
 
@@ -322,6 +327,11 @@ void __init setup_arch(char **cmdline_p)
 	case MACH_SUN3X:
 		config_sun3x();
 		break;
+#endif
+#ifdef CONFIG_COLDFIRE
+	case MACH_M54XX:
+		config_BSP(NULL, 0);
+		break;
 #endif
 	default:
 		panic("No configuration setup");
@@ -384,6 +394,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 #define LOOP_CYCLES_68030	(8)
 #define LOOP_CYCLES_68040	(3)
 #define LOOP_CYCLES_68060	(1)
+#define LOOP_CYCLES_COLDFIRE	(2)
 
 	if (CPU_IS_020) {
 		cpu = "68020";
@@ -397,6 +408,9 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 	} else if (CPU_IS_060) {
 		cpu = "68060";
 		clockfactor = LOOP_CYCLES_68060;
+	} else if (CPU_IS_COLDFIRE) {
+		cpu = "ColdFire";
+		clockfactor = LOOP_CYCLES_COLDFIRE;
 	} else {
 		cpu = "680x0";
 		clockfactor = 0;
@@ -415,6 +429,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		fpu = "68060";
 	else if (m68k_fputype & FPU_SUNFPA)
 		fpu = "Sun FPA";
+	else if (m68k_fputype & FPU_COLDFIRE)
+		fpu = "ColdFire";
 	else
 		fpu = "none";
 #endif
@@ -431,6 +447,8 @@ static int show_cpuinfo(struct seq_file *m, void *v)
 		mmu = "Sun-3";
 	else if (m68k_mmutype & MMU_APOLLO)
 		mmu = "Apollo";
+	else if (m68k_mmutype & MMU_COLDFIRE)
+		mmu = "ColdFire";
 	else
 		mmu = "unknown";
 

arch/m68k/kernel/setup_no.c

@@ -47,7 +47,6 @@ EXPORT_SYMBOL(memory_end);
 char __initdata command_line[COMMAND_LINE_SIZE];
 
 /* machine dependent timer functions */
-void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
 int (*mach_set_clock_mmss)(unsigned long);
 
 /* machine dependent reboot functions */

arch/m68k/kernel/signal_mm.c

@@ -56,7 +56,11 @@ static const int frame_extra_sizes[16] = {
   [1]	= -1, /* sizeof(((struct frame *)0)->un.fmt1), */
   [2]	= sizeof(((struct frame *)0)->un.fmt2),
   [3]	= sizeof(((struct frame *)0)->un.fmt3),
+#ifdef CONFIG_COLDFIRE
+  [4]	= 0,
+#else
   [4]	= sizeof(((struct frame *)0)->un.fmt4),
+#endif
   [5]	= -1, /* sizeof(((struct frame *)0)->un.fmt5), */
   [6]	= -1, /* sizeof(((struct frame *)0)->un.fmt6), */
   [7]	= sizeof(((struct frame *)0)->un.fmt7),
@@ -84,7 +88,11 @@ int handle_kernel_fault(struct pt_regs *regs)
 	regs->stkadj = frame_extra_sizes[regs->format];
 	tregs =	(struct pt_regs *)((long)regs + regs->stkadj);
 	tregs->vector = regs->vector;
+#ifdef CONFIG_COLDFIRE
+	tregs->format = 4;
+#else
 	tregs->format = 0;
+#endif
 	tregs->pc = fixup->fixup;
 	tregs->sr = regs->sr;
 
@@ -195,7 +203,8 @@ static inline int restore_fpu_state(struct sigcontext *sc)
 
 	if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
 	    /* Verify the frame format.  */
-	    if (!CPU_IS_060 && (sc->sc_fpstate[0] != fpu_version))
+	    if (!(CPU_IS_060 || CPU_IS_COLDFIRE) &&
+		 (sc->sc_fpstate[0] != fpu_version))
 		goto out;
 	    if (CPU_IS_020_OR_030) {
 		if (m68k_fputype & FPU_68881 &&
@@ -214,19 +223,43 @@ static inline int restore_fpu_state(struct sigcontext *sc)
                       sc->sc_fpstate[3] == 0x60 ||
 		      sc->sc_fpstate[3] == 0xe0))
 		    goto out;
+	    } else if (CPU_IS_COLDFIRE) {
+		if (!(sc->sc_fpstate[0] == 0x00 ||
+		      sc->sc_fpstate[0] == 0x05 ||
+		      sc->sc_fpstate[0] == 0xe5))
+		    goto out;
 	    } else
 		goto out;
 
-	    __asm__ volatile (".chip 68k/68881\n\t"
-			      "fmovemx %0,%%fp0-%%fp1\n\t"
-			      "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
-			      ".chip 68k"
-			      : /* no outputs */
-			      : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl));
+	    if (CPU_IS_COLDFIRE) {
+		__asm__ volatile ("fmovemd %0,%%fp0-%%fp1\n\t"
+				  "fmovel %1,%%fpcr\n\t"
+				  "fmovel %2,%%fpsr\n\t"
+				  "fmovel %3,%%fpiar"
+				  : /* no outputs */
+				  : "m" (sc->sc_fpregs[0]),
+				    "m" (sc->sc_fpcntl[0]),
+				    "m" (sc->sc_fpcntl[1]),
+				    "m" (sc->sc_fpcntl[2]));
+	    } else {
+		__asm__ volatile (".chip 68k/68881\n\t"
+				  "fmovemx %0,%%fp0-%%fp1\n\t"
+				  "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
+				  ".chip 68k"
+				  : /* no outputs */
+				  : "m" (*sc->sc_fpregs),
+				    "m" (*sc->sc_fpcntl));
+	    }
+	}
+
+	if (CPU_IS_COLDFIRE) {
+		__asm__ volatile ("frestore %0" : : "m" (*sc->sc_fpstate));
+	} else {
+		__asm__ volatile (".chip 68k/68881\n\t"
+				  "frestore %0\n\t"
+				  ".chip 68k"
+				  : : "m" (*sc->sc_fpstate));
 	}
-	__asm__ volatile (".chip 68k/68881\n\t"
-			  "frestore %0\n\t"
-			  ".chip 68k" : : "m" (*sc->sc_fpstate));
 	err = 0;
 
 out:
@@ -241,7 +274,7 @@ out:
 static inline int rt_restore_fpu_state(struct ucontext __user *uc)
 {
 	unsigned char fpstate[FPCONTEXT_SIZE];
-	int context_size = CPU_IS_060 ? 8 : 0;
+	int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0);
 	fpregset_t fpregs;
 	int err = 1;
 
@@ -260,10 +293,11 @@ static inline int rt_restore_fpu_state(struct ucontext __user *uc)
 	if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate))
 		goto out;
 	if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
-		if (!CPU_IS_060)
+		if (!(CPU_IS_060 || CPU_IS_COLDFIRE))
 			context_size = fpstate[1];
 		/* Verify the frame format.  */
-		if (!CPU_IS_060 && (fpstate[0] != fpu_version))
+		if (!(CPU_IS_060 || CPU_IS_COLDFIRE) &&
+		     (fpstate[0] != fpu_version))
 			goto out;
 		if (CPU_IS_020_OR_030) {
 			if (m68k_fputype & FPU_68881 &&
@@ -282,26 +316,50 @@ static inline int rt_restore_fpu_state(struct ucontext __user *uc)
 			      fpstate[3] == 0x60 ||
 			      fpstate[3] == 0xe0))
 				goto out;
+		} else if (CPU_IS_COLDFIRE) {
+			if (!(fpstate[3] == 0x00 ||
+			      fpstate[3] == 0x05 ||
+			      fpstate[3] == 0xe5))
+				goto out;
 		} else
 			goto out;
 		if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs,
 				     sizeof(fpregs)))
 			goto out;
-		__asm__ volatile (".chip 68k/68881\n\t"
-				  "fmovemx %0,%%fp0-%%fp7\n\t"
-				  "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
-				  ".chip 68k"
-				  : /* no outputs */
-				  : "m" (*fpregs.f_fpregs),
-				    "m" (*fpregs.f_fpcntl));
+
+		if (CPU_IS_COLDFIRE) {
+			__asm__ volatile ("fmovemd %0,%%fp0-%%fp7\n\t"
+					  "fmovel %1,%%fpcr\n\t"
+					  "fmovel %2,%%fpsr\n\t"
+					  "fmovel %3,%%fpiar"
+					  : /* no outputs */
+					  : "m" (fpregs.f_fpregs[0]),
+					    "m" (fpregs.f_fpcntl[0]),
+					    "m" (fpregs.f_fpcntl[1]),
+					    "m" (fpregs.f_fpcntl[2]));
+		} else {
+			__asm__ volatile (".chip 68k/68881\n\t"
+					  "fmovemx %0,%%fp0-%%fp7\n\t"
+					  "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t"
+					  ".chip 68k"
+					  : /* no outputs */
+					  : "m" (*fpregs.f_fpregs),
+					    "m" (*fpregs.f_fpcntl));
+		}
 	}
 	if (context_size &&
 	    __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1,
 			     context_size))
 		goto out;
-	__asm__ volatile (".chip 68k/68881\n\t"
-			  "frestore %0\n\t"
-			  ".chip 68k" : : "m" (*fpstate));
+
+	if (CPU_IS_COLDFIRE) {
+		__asm__ volatile ("frestore %0" : : "m" (*fpstate));
+	} else {
+		__asm__ volatile (".chip 68k/68881\n\t"
+				  "frestore %0\n\t"
+				  ".chip 68k"
+				  : : "m" (*fpstate));
+	}
 	err = 0;
 
 out:
@@ -336,8 +394,12 @@ static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,
 		regs->format = formatvec >> 12;
 		regs->vector = formatvec & 0xfff;
 #define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack))
-		__asm__ __volatile__
-			("   movel %0,%/a0\n\t"
+		__asm__ __volatile__ (
+#ifdef CONFIG_COLDFIRE
+			 "   movel %0,%/sp\n\t"
+			 "   bra ret_from_signal\n"
+#else
+			 "   movel %0,%/a0\n\t"
 			 "   subl %1,%/a0\n\t"     /* make room on stack */
 			 "   movel %/a0,%/sp\n\t"  /* set stack pointer */
 			 /* move switch_stack and pt_regs */
@@ -350,6 +412,7 @@ static int mangle_kernel_stack(struct pt_regs *regs, int formatvec,
 			 "2: movel %4@+,%/a0@+\n\t"
 			 "   dbra %1,2b\n\t"
 			 "   bral ret_from_signal\n"
+#endif
 			 : /* no outputs, it doesn't ever return */
 			 : "a" (sw), "d" (fsize), "d" (frame_offset/4-1),
 			   "n" (frame_offset), "a" (buf + fsize/4)
@@ -516,10 +579,15 @@ static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
 		return;
 	}
 
-	__asm__ volatile (".chip 68k/68881\n\t"
-			  "fsave %0\n\t"
-			  ".chip 68k"
-			  : : "m" (*sc->sc_fpstate) : "memory");
+	if (CPU_IS_COLDFIRE) {
+		__asm__ volatile ("fsave %0"
+				  : : "m" (*sc->sc_fpstate) : "memory");
+	} else {
+		__asm__ volatile (".chip 68k/68881\n\t"
+				  "fsave %0\n\t"
+				  ".chip 68k"
+				  : : "m" (*sc->sc_fpstate) : "memory");
+	}
 
 	if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) {
 		fpu_version = sc->sc_fpstate[0];
@@ -530,21 +598,35 @@ static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs)
 			if (*(unsigned short *) sc->sc_fpstate == 0x1f38)
 				sc->sc_fpstate[0x38] |= 1 << 3;
 		}
-		__asm__ volatile (".chip 68k/68881\n\t"
-				  "fmovemx %%fp0-%%fp1,%0\n\t"
-				  "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
-				  ".chip 68k"
-				  : "=m" (*sc->sc_fpregs),
-				    "=m" (*sc->sc_fpcntl)
-				  : /* no inputs */
-				  : "memory");
+
+		if (CPU_IS_COLDFIRE) {
+			__asm__ volatile ("fmovemd %%fp0-%%fp1,%0\n\t"
+					  "fmovel %%fpcr,%1\n\t"
+					  "fmovel %%fpsr,%2\n\t"
+					  "fmovel %%fpiar,%3"
+					  : "=m" (sc->sc_fpregs[0]),
+					    "=m" (sc->sc_fpcntl[0]),
+					    "=m" (sc->sc_fpcntl[1]),
+					    "=m" (sc->sc_fpcntl[2])
+					  : /* no inputs */
+					  : "memory");
+		} else {
+			__asm__ volatile (".chip 68k/68881\n\t"
+					  "fmovemx %%fp0-%%fp1,%0\n\t"
+					  "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
+					  ".chip 68k"
+					  : "=m" (*sc->sc_fpregs),
+					    "=m" (*sc->sc_fpcntl)
+					  : /* no inputs */
+					  : "memory");
+		}
 	}
 }
 
 static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs)
 {
 	unsigned char fpstate[FPCONTEXT_SIZE];
-	int context_size = CPU_IS_060 ? 8 : 0;
+	int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0);
 	int err = 0;
 
 	if (FPU_IS_EMU) {
@@ -557,15 +639,19 @@ static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *
 		return err;
 	}
 
-	__asm__ volatile (".chip 68k/68881\n\t"
-			  "fsave %0\n\t"
-			  ".chip 68k"
-			  : : "m" (*fpstate) : "memory");
+	if (CPU_IS_COLDFIRE) {
+		__asm__ volatile ("fsave %0" : : "m" (*fpstate) : "memory");
+	} else {
+		__asm__ volatile (".chip 68k/68881\n\t"
+				  "fsave %0\n\t"
+				  ".chip 68k"
+				  : : "m" (*fpstate) : "memory");
+	}
 
 	err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate);
 	if (CPU_IS_060 ? fpstate[2] : fpstate[0]) {
 		fpregset_t fpregs;
-		if (!CPU_IS_060)
+		if (!(CPU_IS_060 || CPU_IS_COLDFIRE))
 			context_size = fpstate[1];
 		fpu_version = fpstate[0];
 		if (CPU_IS_020_OR_030 &&
@@ -575,14 +661,27 @@ static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *
 			if (*(unsigned short *) fpstate == 0x1f38)
 				fpstate[0x38] |= 1 << 3;
 		}
-		__asm__ volatile (".chip 68k/68881\n\t"
-				  "fmovemx %%fp0-%%fp7,%0\n\t"
-				  "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
-				  ".chip 68k"
-				  : "=m" (*fpregs.f_fpregs),
-				    "=m" (*fpregs.f_fpcntl)
-				  : /* no inputs */
-				  : "memory");
+		if (CPU_IS_COLDFIRE) {
+			__asm__ volatile ("fmovemd %%fp0-%%fp7,%0\n\t"
+					  "fmovel %%fpcr,%1\n\t"
+					  "fmovel %%fpsr,%2\n\t"
+					  "fmovel %%fpiar,%3"
+					  : "=m" (fpregs.f_fpregs[0]),
+					    "=m" (fpregs.f_fpcntl[0]),
+					    "=m" (fpregs.f_fpcntl[1]),
+					    "=m" (fpregs.f_fpcntl[2])
+					  : /* no inputs */
+					  : "memory");
+		} else {
+			__asm__ volatile (".chip 68k/68881\n\t"
+					  "fmovemx %%fp0-%%fp7,%0\n\t"
+					  "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t"
+					  ".chip 68k"
+					  : "=m" (*fpregs.f_fpregs),
+					    "=m" (*fpregs.f_fpcntl)
+					  : /* no inputs */
+					  : "memory");
+		}
 		err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs,
 				    sizeof(fpregs));
 	}
@@ -679,8 +778,7 @@ static inline void push_cache (unsigned long vaddr)
 				      "cpushl %%bc,(%0)\n\t"
 				      ".chip 68k"
 				      : : "a" (temp));
-	}
-	else {
+	} else if (!CPU_IS_COLDFIRE) {
 		/*
 		 * 68030/68020 have no writeback cache;
 		 * still need to clear icache.

arch/m68k/kernel/time.c

@@ -1,4 +1,4 @@
-#ifdef CONFIG_MMU
+#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
 #include "time_mm.c"
 #else
 #include "time_no.c"

arch/m68k/kernel/time_no.c

@@ -26,6 +26,9 @@
 
 #define	TICK_SIZE (tick_nsec / 1000)
 
+/* machine dependent timer functions */
+void (*mach_gettod)(int*, int*, int*, int*, int*, int*);
+
 static inline int set_rtc_mmss(unsigned long nowtime)
 {
 	if (mach_set_clock_mmss)

arch/m68k/kernel/traps.c

@@ -706,6 +706,88 @@ create_atc_entry:
 #endif /* CPU_M68020_OR_M68030 */
 #endif /* !CONFIG_SUN3 */
 
+#if defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU)
+#include <asm/mcfmmu.h>
+
+/*
+ *	The following table converts the FS encoding of a ColdFire
+ *	exception stack frame into the error_code value needed by
+ *	do_fault.
+*/
+static const unsigned char fs_err_code[] = {
+	0,  /* 0000 */
+	0,  /* 0001 */
+	0,  /* 0010 */
+	0,  /* 0011 */
+	1,  /* 0100 */
+	0,  /* 0101 */
+	0,  /* 0110 */
+	0,  /* 0111 */
+	2,  /* 1000 */
+	3,  /* 1001 */
+	2,  /* 1010 */
+	0,  /* 1011 */
+	1,  /* 1100 */
+	1,  /* 1101 */
+	0,  /* 1110 */
+	0   /* 1111 */
+};
+
+static inline void access_errorcf(unsigned int fs, struct frame *fp)
+{
+	unsigned long mmusr, addr;
+	unsigned int err_code;
+	int need_page_fault;
+
+	mmusr = mmu_read(MMUSR);
+	addr = mmu_read(MMUAR);
+
+	/*
+	 * error_code:
+	 *	bit 0 == 0 means no page found, 1 means protection fault
+	 *	bit 1 == 0 means read, 1 means write
+	 */
+	switch (fs) {
+	case  5:  /* 0101 TLB opword X miss */
+		need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 0, 0);
+		addr = fp->ptregs.pc;
+		break;
+	case  6:  /* 0110 TLB extension word X miss */
+		need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 0, 1);
+		addr = fp->ptregs.pc + sizeof(long);
+		break;
+	case 10:  /* 1010 TLB W miss */
+		need_page_fault = cf_tlb_miss(&fp->ptregs, 1, 1, 0);
+		break;
+	case 14: /* 1110 TLB R miss */
+		need_page_fault = cf_tlb_miss(&fp->ptregs, 0, 1, 0);
+		break;
+	default:
+		/* 0000 Normal  */
+		/* 0001 Reserved */
+		/* 0010 Interrupt during debug service routine */
+		/* 0011 Reserved */
+		/* 0100 X Protection */
+		/* 0111 IFP in emulator mode */
+		/* 1000 W Protection*/
+		/* 1001 Write error*/
+		/* 1011 Reserved*/
+		/* 1100 R Protection*/
+		/* 1101 R Protection*/
+		/* 1111 OEP in emulator mode*/
+		need_page_fault = 1;
+		break;
+	}
+
+	if (need_page_fault) {
+		err_code = fs_err_code[fs];
+		if ((fs == 13) && (mmusr & MMUSR_WF)) /* rd-mod-wr access */
+			err_code |= 2; /* bit1 - write, bit0 - protection */
+		do_page_fault(&fp->ptregs, addr, err_code);
+	}
+}
+#endif /* CONFIG_COLDFIRE CONFIG_MMU */
+
 asmlinkage void buserr_c(struct frame *fp)
 {
 	/* Only set esp0 if coming from user mode */
@@ -716,6 +798,28 @@ asmlinkage void buserr_c(struct frame *fp)
 	printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format);
 #endif
 
+#if defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU)
+	if (CPU_IS_COLDFIRE) {
+		unsigned int fs;
+		fs = (fp->ptregs.vector & 0x3) |
+			((fp->ptregs.vector & 0xc00) >> 8);
+		switch (fs) {
+		case 0x5:
+		case 0x6:
+		case 0x7:
+		case 0x9:
+		case 0xa:
+		case 0xd:
+		case 0xe:
+		case 0xf:
+			access_errorcf(fs, fp);
+			return;
+		default:
+			break;
+		}
+	}
+#endif /* CONFIG_COLDFIRE && CONFIG_MMU */
+
 	switch (fp->ptregs.format) {
 #if defined (CONFIG_M68060)
 	case 4:				/* 68060 access error */

arch/m68k/kernel/vmlinux.lds_no.S → arch/m68k/kernel/vmlinux-nommu.lds

@@ -69,6 +69,7 @@ SECTIONS {
 		SCHED_TEXT
 		LOCK_TEXT
 		*(.text..lock)
+		*(.fixup)
 
 		. = ALIGN(16);          /* Exception table              */
 		__start___ex_table = .;
@@ -161,6 +162,13 @@ SECTIONS {
 		_edata = . ;
 	} > DATA
 
+	.m68k_fixup : {
+		__start_fixup = .;
+		*(.m68k_fixup)
+		__stop_fixup = .;
+	} > DATA
+	NOTES > DATA
+
 	.init.text : {
 		. = ALIGN(PAGE_SIZE);
 		__init_begin = .;

arch/m68k/kernel/vmlinux-std.lds

@@ -31,7 +31,9 @@ SECTIONS
 
   RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE)
 
+  _sbss = .;
   BSS_SECTION(0, 0, 0)
+  _ebss = .;
 
   _edata = .;			/* End of data section */
 

arch/m68k/kernel/vmlinux-sun3.lds

@@ -44,7 +44,9 @@ __init_begin = .;
 	. = ALIGN(PAGE_SIZE);
 	__init_end = .;
 
+  _sbss = .;
   BSS_SECTION(0, 0, 0)
+  _ebss = .;
 
   _end = . ;
 

arch/m68k/kernel/vmlinux.lds.S

@@ -1,5 +1,14 @@
-#ifdef CONFIG_MMU
-#include "vmlinux.lds_mm.S"
+#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
+PHDRS
+{
+  text PT_LOAD FILEHDR PHDRS FLAGS (7);
+  data PT_LOAD FLAGS (7);
+}
+#ifdef CONFIG_SUN3
+#include "vmlinux-sun3.lds"
 #else
-#include "vmlinux.lds_no.S"
+#include "vmlinux-std.lds"
+#endif
+#else
+#include "vmlinux-nommu.lds"
 #endif

arch/m68k/kernel/vmlinux.lds_mm.S

@@ -1,10 +0,0 @@
-PHDRS
-{
-  text PT_LOAD FILEHDR PHDRS FLAGS (7);
-  data PT_LOAD FLAGS (7);
-}
-#ifdef CONFIG_SUN3
-#include "vmlinux-sun3.lds"
-#else
-#include "vmlinux-std.lds"
-#endif

arch/m68k/lib/Makefile

@@ -6,9 +6,11 @@
 lib-y	:= ashldi3.o ashrdi3.o lshrdi3.o muldi3.o \
 	   memcpy.o memset.o memmove.o
 
-ifdef CONFIG_MMU
-lib-y	+= string.o uaccess.o checksum_mm.o
-else
-lib-y	+= mulsi3.o divsi3.o udivsi3.o modsi3.o umodsi3.o checksum_no.o
+lib-$(CONFIG_MMU) += string.o uaccess.o
+lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += mulsi3.o divsi3.o udivsi3.o
+lib-$(CONFIG_CPU_HAS_NO_MULDIV64) += modsi3.o umodsi3.o
+
+ifndef CONFIG_GENERIC_CSUM
+lib-y	+= checksum.o
 endif
 

arch/m68k/lib/checksum_no.c

@@ -1,156 +0,0 @@
-/*
- * INET		An implementation of the TCP/IP protocol suite for the LINUX
- *		operating system.  INET is implemented using the  BSD Socket
- *		interface as the means of communication with the user level.
- *
- *		IP/TCP/UDP checksumming routines
- *
- * Authors:	Jorge Cwik, <jorge@laser.satlink.net>
- *		Arnt Gulbrandsen, <agulbra@nvg.unit.no>
- *		Tom May, <ftom@netcom.com>
- *		Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de>
- *		Lots of code moved from tcp.c and ip.c; see those files
- *		for more names.
- *
- * 03/02/96	Jes Sorensen, Andreas Schwab, Roman Hodek:
- *		Fixed some nasty bugs, causing some horrible crashes.
- *		A: At some points, the sum (%0) was used as
- *		length-counter instead of the length counter
- *		(%1). Thanks to Roman Hodek for pointing this out.
- *		B: GCC seems to mess up if one uses too many
- *		data-registers to hold input values and one tries to
- *		specify d0 and d1 as scratch registers. Letting gcc choose these
- *      registers itself solves the problem.
- *
- *		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.
- */
- 
-/* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access kills, so most
-   of the assembly has to go. */
-
-#include <linux/module.h>
-#include <net/checksum.h>
-
-static inline unsigned short from32to16(unsigned long x)
-{
-	/* add up 16-bit and 16-bit for 16+c bit */
-	x = (x & 0xffff) + (x >> 16);
-	/* add up carry.. */
-	x = (x & 0xffff) + (x >> 16);
-	return x;
-}
-
-static unsigned long do_csum(const unsigned char * buff, int len)
-{
-	int odd, count;
-	unsigned long result = 0;
-
-	if (len <= 0)
-		goto out;
-	odd = 1 & (unsigned long) buff;
-	if (odd) {
-		result = *buff;
-		len--;
-		buff++;
-	}
-	count = len >> 1;		/* nr of 16-bit words.. */
-	if (count) {
-		if (2 & (unsigned long) buff) {
-			result += *(unsigned short *) buff;
-			count--;
-			len -= 2;
-			buff += 2;
-		}
-		count >>= 1;		/* nr of 32-bit words.. */
-		if (count) {
-		        unsigned long carry = 0;
-			do {
-				unsigned long w = *(unsigned long *) buff;
-				count--;
-				buff += 4;
-				result += carry;
-				result += w;
-				carry = (w > result);
-			} while (count);
-			result += carry;
-			result = (result & 0xffff) + (result >> 16);
-		}
-		if (len & 2) {
-			result += *(unsigned short *) buff;
-			buff += 2;
-		}
-	}
-	if (len & 1)
-		result += (*buff << 8);
-	result = from32to16(result);
-	if (odd)
-		result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
-out:
-	return result;
-}
-
-#ifdef CONFIG_COLDFIRE
-/*
- *	This is a version of ip_compute_csum() optimized for IP headers,
- *	which always checksum on 4 octet boundaries.
- */
-__sum16 ip_fast_csum(const void *iph, unsigned int ihl)
-{
-	return (__force __sum16)~do_csum(iph,ihl*4);
-}
-EXPORT_SYMBOL(ip_fast_csum);
-#endif
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-__wsum csum_partial(const void *buff, int len, __wsum sum)
-{
-	unsigned int result = do_csum(buff, len);
-
-	/* add in old sum, and carry.. */
-	result += (__force u32)sum;
-	if ((__force u32)sum > result)
-		result += 1;
-	return (__force __wsum)result;
-}
-
-EXPORT_SYMBOL(csum_partial);
-
-/*
- * copy from fs while checksumming, otherwise like csum_partial
- */
-
-__wsum
-csum_partial_copy_from_user(const void __user *src, void *dst,
-			    int len, __wsum sum, int *csum_err)
-{
-	if (csum_err) *csum_err = 0;
-	memcpy(dst, (__force const void *)src, len);
-	return csum_partial(dst, len, sum);
-}
-EXPORT_SYMBOL(csum_partial_copy_from_user);
-
-/*
- * copy from ds while checksumming, otherwise like csum_partial
- */
-
-__wsum
-csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
-{
-	memcpy(dst, src, len);
-	return csum_partial(dst, len, sum);
-}
-EXPORT_SYMBOL(csum_partial_copy_nocheck);

arch/m68k/lib/uaccess.c

@@ -15,17 +15,17 @@ unsigned long __generic_copy_from_user(void *to, const void __user *from,
 	asm volatile ("\n"
 		"	tst.l	%0\n"
 		"	jeq	2f\n"
-		"1:	moves.l	(%1)+,%3\n"
+		"1:	"MOVES".l	(%1)+,%3\n"
 		"	move.l	%3,(%2)+\n"
 		"	subq.l	#1,%0\n"
 		"	jne	1b\n"
 		"2:	btst	#1,%5\n"
 		"	jeq	4f\n"
-		"3:	moves.w	(%1)+,%3\n"
+		"3:	"MOVES".w	(%1)+,%3\n"
 		"	move.w	%3,(%2)+\n"
 		"4:	btst	#0,%5\n"
 		"	jeq	6f\n"
-		"5:	moves.b	(%1)+,%3\n"
+		"5:	"MOVES".b	(%1)+,%3\n"
 		"	move.b  %3,(%2)+\n"
 		"6:\n"
 		"	.section .fixup,\"ax\"\n"
@@ -68,17 +68,17 @@ unsigned long __generic_copy_to_user(void __user *to, const void *from,
 		"	tst.l	%0\n"
 		"	jeq	4f\n"
 		"1:	move.l	(%1)+,%3\n"
-		"2:	moves.l	%3,(%2)+\n"
+		"2:	"MOVES".l	%3,(%2)+\n"
 		"3:	subq.l	#1,%0\n"
 		"	jne	1b\n"
 		"4:	btst	#1,%5\n"
 		"	jeq	6f\n"
 		"	move.w	(%1)+,%3\n"
-		"5:	moves.w	%3,(%2)+\n"
+		"5:	"MOVES".w	%3,(%2)+\n"
 		"6:	btst	#0,%5\n"
 		"	jeq	8f\n"
 		"	move.b	(%1)+,%3\n"
-		"7:	moves.b  %3,(%2)+\n"
+		"7:	"MOVES".b  %3,(%2)+\n"
 		"8:\n"
 		"	.section .fixup,\"ax\"\n"
 		"	.even\n"
@@ -115,7 +115,7 @@ long strncpy_from_user(char *dst, const char __user *src, long count)
 		return count;
 
 	asm volatile ("\n"
-		"1:	moves.b	(%2)+,%4\n"
+		"1:	"MOVES".b	(%2)+,%4\n"
 		"	move.b	%4,(%1)+\n"
 		"	jeq	2f\n"
 		"	subq.l	#1,%3\n"
@@ -152,7 +152,7 @@ long strnlen_user(const char __user *src, long n)
 	asm volatile ("\n"
 		"1:	subq.l	#1,%1\n"
 		"	jmi	3f\n"
-		"2:	moves.b	(%0)+,%2\n"
+		"2:	"MOVES".b	(%0)+,%2\n"
 		"	tst.b	%2\n"
 		"	jne	1b\n"
 		"	jra	4f\n"
@@ -188,15 +188,15 @@ unsigned long __clear_user(void __user *to, unsigned long n)
 	asm volatile ("\n"
 		"	tst.l	%0\n"
 		"	jeq	3f\n"
-		"1:	moves.l	%2,(%1)+\n"
+		"1:	"MOVES".l	%2,(%1)+\n"
 		"2:	subq.l	#1,%0\n"
 		"	jne	1b\n"
 		"3:	btst	#1,%4\n"
 		"	jeq	5f\n"
-		"4:	moves.w	%2,(%1)+\n"
+		"4:	"MOVES".w	%2,(%1)+\n"
 		"5:	btst	#0,%4\n"
 		"	jeq	7f\n"
-		"6:	moves.b	%2,(%1)\n"
+		"6:	"MOVES".b	%2,(%1)\n"
 		"7:\n"
 		"	.section .fixup,\"ax\"\n"
 		"	.even\n"

arch/m68k/mm/Makefile

@@ -4,6 +4,8 @@
 
 obj-y	:= init.o
 
-obj-$(CONFIG_MMU)		+= cache.o fault.o hwtest.o
-obj-$(CONFIG_MMU_MOTOROLA)	+= kmap.o memory.o motorola.o
-obj-$(CONFIG_MMU_SUN3)		+= sun3kmap.o sun3mmu.o
+obj-$(CONFIG_MMU)		+= cache.o fault.o
+obj-$(CONFIG_MMU_MOTOROLA)	+= kmap.o memory.o motorola.o hwtest.o
+obj-$(CONFIG_MMU_SUN3)		+= sun3kmap.o sun3mmu.o hwtest.o
+obj-$(CONFIG_MMU_COLDFIRE)	+= kmap.o memory.o mcfmmu.o
+

arch/m68k/mm/cache.c

@@ -74,8 +74,16 @@ static unsigned long virt_to_phys_slow(unsigned long vaddr)
 /* RZ: use cpush %bc instead of cpush %dc, cinv %ic */
 void flush_icache_range(unsigned long address, unsigned long endaddr)
 {
-
-	if (CPU_IS_040_OR_060) {
+	if (CPU_IS_COLDFIRE) {
+		unsigned long start, end;
+		start = address & ICACHE_SET_MASK;
+		end = endaddr & ICACHE_SET_MASK;
+		if (start > end) {
+			flush_cf_icache(0, end);
+			end = ICACHE_MAX_ADDR;
+		}
+		flush_cf_icache(start, end);
+	} else if (CPU_IS_040_OR_060) {
 		address &= PAGE_MASK;
 
 		do {
@@ -100,7 +108,17 @@ EXPORT_SYMBOL(flush_icache_range);
 void flush_icache_user_range(struct vm_area_struct *vma, struct page *page,
 			     unsigned long addr, int len)
 {
-	if (CPU_IS_040_OR_060) {
+	if (CPU_IS_COLDFIRE) {
+		unsigned long start, end;
+		start = addr & ICACHE_SET_MASK;
+		end = (addr + len) & ICACHE_SET_MASK;
+		if (start > end) {
+			flush_cf_icache(0, end);
+			end = ICACHE_MAX_ADDR;
+		}
+		flush_cf_icache(start, end);
+
+	} else if (CPU_IS_040_OR_060) {
 		asm volatile ("nop\n\t"
 			      ".chip 68040\n\t"
 			      "cpushp %%bc,(%0)\n\t"

arch/m68k/mm/init_mm.c

@@ -24,6 +24,7 @@
 #include <asm/page.h>
 #include <asm/pgalloc.h>
 #include <asm/system.h>
+#include <asm/traps.h>
 #include <asm/machdep.h>
 #include <asm/io.h>
 #ifdef CONFIG_ATARI
@@ -75,6 +76,38 @@ extern void init_pointer_table(unsigned long ptable);
 
 extern pmd_t *zero_pgtable;
 
+#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE)
+#define VECTORS	&vectors[0]
+#else
+#define VECTORS	_ramvec
+#endif
+
+void __init print_memmap(void)
+{
+#define UL(x) ((unsigned long) (x))
+#define MLK(b, t) UL(b), UL(t), (UL(t) - UL(b)) >> 10
+#define MLM(b, t) UL(b), UL(t), (UL(t) - UL(b)) >> 20
+#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), 1024)
+
+	pr_notice("Virtual kernel memory layout:\n"
+		"    vector  : 0x%08lx - 0x%08lx   (%4ld KiB)\n"
+		"    kmap    : 0x%08lx - 0x%08lx   (%4ld MiB)\n"
+		"    vmalloc : 0x%08lx - 0x%08lx   (%4ld MiB)\n"
+		"    lowmem  : 0x%08lx - 0x%08lx   (%4ld MiB)\n"
+		"      .init : 0x%p" " - 0x%p" "   (%4d KiB)\n"
+		"      .text : 0x%p" " - 0x%p" "   (%4d KiB)\n"
+		"      .data : 0x%p" " - 0x%p" "   (%4d KiB)\n"
+		"      .bss  : 0x%p" " - 0x%p" "   (%4d KiB)\n",
+		MLK(VECTORS, VECTORS + 256),
+		MLM(KMAP_START, KMAP_END),
+		MLM(VMALLOC_START, VMALLOC_END),
+		MLM(PAGE_OFFSET, (unsigned long)high_memory),
+		MLK_ROUNDUP(__init_begin, __init_end),
+		MLK_ROUNDUP(_stext, _etext),
+		MLK_ROUNDUP(_sdata, _edata),
+		MLK_ROUNDUP(_sbss, _ebss));
+}
+
 void __init mem_init(void)
 {
 	pg_data_t *pgdat;
@@ -106,7 +139,7 @@ void __init mem_init(void)
 		}
 	}
 
-#ifndef CONFIG_SUN3
+#if !defined(CONFIG_SUN3) && !defined(CONFIG_COLDFIRE)
 	/* insert pointer tables allocated so far into the tablelist */
 	init_pointer_table((unsigned long)kernel_pg_dir);
 	for (i = 0; i < PTRS_PER_PGD; i++) {
@@ -125,6 +158,7 @@ void __init mem_init(void)
 	       codepages << (PAGE_SHIFT-10),
 	       datapages << (PAGE_SHIFT-10),
 	       initpages << (PAGE_SHIFT-10));
+	print_memmap();
 }
 
 #ifdef CONFIG_BLK_DEV_INITRD

arch/m68k/mm/kmap.c

@@ -171,7 +171,8 @@ void __iomem *__ioremap(unsigned long physaddr, unsigned long size, int cachefla
 			break;
 		}
 	} else {
-		physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY);
+		physaddr |= (_PAGE_PRESENT | _PAGE_ACCESSED |
+			     _PAGE_DIRTY | _PAGE_READWRITE);
 		switch (cacheflag) {
 		case IOMAP_NOCACHE_SER:
 		case IOMAP_NOCACHE_NONSER:

arch/m68k/mm/mcfmmu.c

@@ -0,0 +1,198 @@
+/*
+ * Based upon linux/arch/m68k/mm/sun3mmu.c
+ * Based upon linux/arch/ppc/mm/mmu_context.c
+ *
+ * Implementations of mm routines specific to the Coldfire MMU.
+ *
+ * Copyright (c) 2008 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/bootmem.h>
+
+#include <asm/setup.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/mmu_context.h>
+#include <asm/mcf_pgalloc.h>
+#include <asm/tlbflush.h>
+
+#define KMAPAREA(x)	((x >= VMALLOC_START) && (x < KMAP_END))
+
+mm_context_t next_mmu_context;
+unsigned long context_map[LAST_CONTEXT / BITS_PER_LONG + 1];
+atomic_t nr_free_contexts;
+struct mm_struct *context_mm[LAST_CONTEXT+1];
+extern unsigned long num_pages;
+
+void free_initmem(void)
+{
+}
+
+/*
+ * ColdFire paging_init derived from sun3.
+ */
+void __init paging_init(void)
+{
+	pgd_t *pg_dir;
+	pte_t *pg_table;
+	unsigned long address, size;
+	unsigned long next_pgtable, bootmem_end;
+	unsigned long zones_size[MAX_NR_ZONES];
+	enum zone_type zone;
+	int i;
+
+	empty_zero_page = (void *) alloc_bootmem_pages(PAGE_SIZE);
+	memset((void *) empty_zero_page, 0, PAGE_SIZE);
+
+	pg_dir = swapper_pg_dir;
+	memset(swapper_pg_dir, 0, sizeof(swapper_pg_dir));
+
+	size = num_pages * sizeof(pte_t);
+	size = (size + PAGE_SIZE) & ~(PAGE_SIZE-1);
+	next_pgtable = (unsigned long) alloc_bootmem_pages(size);
+
+	bootmem_end = (next_pgtable + size + PAGE_SIZE) & PAGE_MASK;
+	pg_dir += PAGE_OFFSET >> PGDIR_SHIFT;
+
+	address = PAGE_OFFSET;
+	while (address < (unsigned long)high_memory) {
+		pg_table = (pte_t *) next_pgtable;
+		next_pgtable += PTRS_PER_PTE * sizeof(pte_t);
+		pgd_val(*pg_dir) = (unsigned long) pg_table;
+		pg_dir++;
+
+		/* now change pg_table to kernel virtual addresses */
+		for (i = 0; i < PTRS_PER_PTE; ++i, ++pg_table) {
+			pte_t pte = pfn_pte(virt_to_pfn(address), PAGE_INIT);
+			if (address >= (unsigned long) high_memory)
+				pte_val(pte) = 0;
+
+			set_pte(pg_table, pte);
+			address += PAGE_SIZE;
+		}
+	}
+
+	current->mm = NULL;
+
+	for (zone = 0; zone < MAX_NR_ZONES; zone++)
+		zones_size[zone] = 0x0;
+	zones_size[ZONE_DMA] = num_pages;
+	free_area_init(zones_size);
+}
+
+int cf_tlb_miss(struct pt_regs *regs, int write, int dtlb, int extension_word)
+{
+	unsigned long flags, mmuar;
+	struct mm_struct *mm;
+	pgd_t *pgd;
+	pmd_t *pmd;
+	pte_t *pte;
+	int asid;
+
+	local_irq_save(flags);
+
+	mmuar = (dtlb) ? mmu_read(MMUAR) :
+		regs->pc + (extension_word * sizeof(long));
+
+	mm = (!user_mode(regs) && KMAPAREA(mmuar)) ? &init_mm : current->mm;
+	if (!mm) {
+		local_irq_restore(flags);
+		return -1;
+	}
+
+	pgd = pgd_offset(mm, mmuar);
+	if (pgd_none(*pgd))  {
+		local_irq_restore(flags);
+		return -1;
+	}
+
+	pmd = pmd_offset(pgd, mmuar);
+	if (pmd_none(*pmd)) {
+		local_irq_restore(flags);
+		return -1;
+	}
+
+	pte = (KMAPAREA(mmuar)) ? pte_offset_kernel(pmd, mmuar)
+				: pte_offset_map(pmd, mmuar);
+	if (pte_none(*pte) || !pte_present(*pte)) {
+		local_irq_restore(flags);
+		return -1;
+	}
+
+	if (write) {
+		if (!pte_write(*pte)) {
+			local_irq_restore(flags);
+			return -1;
+		}
+		set_pte(pte, pte_mkdirty(*pte));
+	}
+
+	set_pte(pte, pte_mkyoung(*pte));
+	asid = mm->context & 0xff;
+	if (!pte_dirty(*pte) && !KMAPAREA(mmuar))
+		set_pte(pte, pte_wrprotect(*pte));
+
+	mmu_write(MMUTR, (mmuar & PAGE_MASK) | (asid << MMUTR_IDN) |
+		(((int)(pte->pte) & (int)CF_PAGE_MMUTR_MASK)
+		>> CF_PAGE_MMUTR_SHIFT) | MMUTR_V);
+
+	mmu_write(MMUDR, (pte_val(*pte) & PAGE_MASK) |
+		((pte->pte) & CF_PAGE_MMUDR_MASK) | MMUDR_SZ_8KB | MMUDR_X);
+
+	if (dtlb)
+		mmu_write(MMUOR, MMUOR_ACC | MMUOR_UAA);
+	else
+		mmu_write(MMUOR, MMUOR_ITLB | MMUOR_ACC | MMUOR_UAA);
+
+	local_irq_restore(flags);
+	return 0;
+}
+
+/*
+ * Initialize the context management stuff.
+ * The following was taken from arch/ppc/mmu_context.c
+ */
+void __init mmu_context_init(void)
+{
+	/*
+	 * Some processors have too few contexts to reserve one for
+	 * init_mm, and require using context 0 for a normal task.
+	 * Other processors reserve the use of context zero for the kernel.
+	 * This code assumes FIRST_CONTEXT < 32.
+	 */
+	context_map[0] = (1 << FIRST_CONTEXT) - 1;
+	next_mmu_context = FIRST_CONTEXT;
+	atomic_set(&nr_free_contexts, LAST_CONTEXT - FIRST_CONTEXT + 1);
+}
+
+/*
+ * Steal a context from a task that has one at the moment.
+ * This is only used on 8xx and 4xx and we presently assume that
+ * they don't do SMP.  If they do then thicfpgalloc.hs will have to check
+ * whether the MM we steal is in use.
+ * We also assume that this is only used on systems that don't
+ * use an MMU hash table - this is true for 8xx and 4xx.
+ * This isn't an LRU system, it just frees up each context in
+ * turn (sort-of pseudo-random replacement :).  This would be the
+ * place to implement an LRU scheme if anyone was motivated to do it.
+ *  -- paulus
+ */
+void steal_context(void)
+{
+	struct mm_struct *mm;
+	/*
+	 * free up context `next_mmu_context'
+	 * if we shouldn't free context 0, don't...
+	 */
+	if (next_mmu_context < FIRST_CONTEXT)
+		next_mmu_context = FIRST_CONTEXT;
+	mm = context_mm[next_mmu_context];
+	flush_tlb_mm(mm);
+	destroy_context(mm);
+}
+

arch/m68k/mm/memory.c

@@ -203,7 +203,9 @@ static inline void pushcl040(unsigned long paddr)
 
 void cache_clear (unsigned long paddr, int len)
 {
-    if (CPU_IS_040_OR_060) {
+    if (CPU_IS_COLDFIRE) {
+	flush_cf_bcache(0, DCACHE_MAX_ADDR);
+    } else if (CPU_IS_040_OR_060) {
 	int tmp;
 
 	/*
@@ -250,7 +252,9 @@ EXPORT_SYMBOL(cache_clear);
 
 void cache_push (unsigned long paddr, int len)
 {
-    if (CPU_IS_040_OR_060) {
+    if (CPU_IS_COLDFIRE) {
+	flush_cf_bcache(0, DCACHE_MAX_ADDR);
+    } else if (CPU_IS_040_OR_060) {
 	int tmp = PAGE_SIZE;
 
 	/*

arch/m68k/platform/54xx/config.c

@@ -13,11 +13,17 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <asm/pgalloc.h>
 #include <asm/machdep.h>
 #include <asm/coldfire.h>
 #include <asm/m54xxsim.h>
 #include <asm/mcfuart.h>
 #include <asm/m54xxgpt.h>
+#ifdef CONFIG_MMU
+#include <asm/mmu_context.h>
+#endif
 
 /***************************************************************************/
 
@@ -95,8 +101,49 @@ static void mcf54xx_reset(void)
 
 /***************************************************************************/
 
+#ifdef CONFIG_MMU
+
+unsigned long num_pages;
+
+static void __init mcf54xx_bootmem_alloc(void)
+{
+	unsigned long start_pfn;
+	unsigned long memstart;
+
+	/* _rambase and _ramend will be naturally page aligned */
+	m68k_memory[0].addr = _rambase;
+	m68k_memory[0].size = _ramend - _rambase;
+
+	/* compute total pages in system */
+	num_pages = (_ramend - _rambase) >> PAGE_SHIFT;
+
+	/* page numbers */
+	memstart = PAGE_ALIGN(_ramstart);
+	min_low_pfn = _rambase >> PAGE_SHIFT;
+	start_pfn = memstart >> PAGE_SHIFT;
+	max_low_pfn = _ramend >> PAGE_SHIFT;
+	high_memory = (void *)_ramend;
+
+	m68k_virt_to_node_shift = fls(_ramend - _rambase - 1) - 6;
+	module_fixup(NULL, __start_fixup, __stop_fixup);
+
+	/* setup bootmem data */
+	m68k_setup_node(0);
+	memstart += init_bootmem_node(NODE_DATA(0), start_pfn,
+		min_low_pfn, max_low_pfn);
+	free_bootmem_node(NODE_DATA(0), memstart, _ramend - memstart);
+}
+
+#endif /* CONFIG_MMU */
+
+/***************************************************************************/
+
 void __init config_BSP(char *commandp, int size)
 {
+#ifdef CONFIG_MMU
+	mcf54xx_bootmem_alloc();
+	mmu_context_init();
+#endif
 	mach_reset = mcf54xx_reset;
 	m54xx_uarts_init();
 }

arch/m68k/platform/68328/Makefile

@@ -14,12 +14,8 @@ obj-$(CONFIG_M68328)	+= config.o
 obj-$(CONFIG_ROM)	+= romvec.o
 
 extra-y			:= head.o
-extra-$(CONFIG_M68328)	+= bootlogo.rh head.o
-
-$(obj)/bootlogo.rh: $(src)/bootlogo.h
-	perl $(src)/bootlogo.pl < $(src)/bootlogo.h > $(obj)/bootlogo.rh
 
 $(obj)/head.o: $(obj)/$(head-y)
 	ln -sf $(head-y) $(obj)/head.o
 
-clean-files := $(obj)/bootlogo.rh $(obj)/head.o $(head-y)
+clean-files := $(obj)/head.o $(head-y)

arch/m68k/platform/68328/bootlogo.h

@@ -1,6 +1,6 @@
 #define bootlogo_width 160
 #define bootlogo_height 160
-static unsigned char bootlogo_bits[] = {
+unsigned char __attribute__ ((aligned(16))) bootlogo_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55, 0x01, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x40, 0x55, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

arch/m68k/platform/68328/bootlogo.pl

@@ -1,10 +0,0 @@
-
-$_ = join("", <>);
-
-s/(0x[0-9a-f]{2})/sprintf("0x%.2x",ord(pack("b8",unpack("B8",chr(hex($1))))))/gei;
-
-s/^ /	.byte /gm;
-s/[,};]+$//gm;
-s/^static.*//gm;
-
-print $_;

arch/m68k/platform/68328/config.c

@@ -20,6 +20,9 @@
 #include <asm/system.h>
 #include <asm/machdep.h>
 #include <asm/MC68328.h>
+#if defined(CONFIG_PILOT) || defined(CONFIG_INIT_LCD)
+#include "bootlogo.h"
+#endif
 
 /***************************************************************************/
 

arch/m68k/platform/68328/head-pilot.S

@@ -24,19 +24,7 @@
 .global _ramstart
 .global _ramend
 
-.global penguin_bits
-
-#ifdef CONFIG_PILOT
-
-#define IMR 0xFFFFF304
-
-	.data
-	.align 16
-
-penguin_bits:	
-#include "bootlogo.rh"
-
-#endif
+.global bootlogo_bits
 
 /*****************************************************************************/
 
@@ -185,9 +173,6 @@ L3:
 	moveq	#79, %d7
 	movel	%d0, _ramend
 
-	movel	%a3, %d0
-	movel	%d0, rom_length
-
 	pea	0
 	pea	env
 	pea	%sp@(4)
@@ -196,7 +181,7 @@ L3:
 	DBG_PUTC('H')
 
 #ifdef CONFIG_PILOT
-	movel	#penguin_bits, 0xFFFFFA00
+	movel	#bootlogo_bits, 0xFFFFFA00
 	moveb	#10, 0xFFFFFA05
 	movew	#160, 0xFFFFFA08
 	movew	#160, 0xFFFFFA0A

arch/m68k/platform/68328/head-rom.S

@@ -8,7 +8,7 @@
 	.global _ramend
 
 #ifdef CONFIG_INIT_LCD
-	.global splash_bits
+	.global bootlogo_bits
 #endif
 
 	.data
@@ -29,16 +29,11 @@ _ramend:
 
 #define	RAMEND	(CONFIG_RAMBASE + CONFIG_RAMSIZE)
 
-#ifdef CONFIG_INIT_LCD
-splash_bits:
-#include "bootlogo.rh"
-#endif
-	
 	.text
 _start:
 _stext:	movew	#0x2700,%sr
 #ifdef CONFIG_INIT_LCD
-	movel	#splash_bits, 0xfffffA00 /* LSSA */
+	movel	#bootlogo_bits, 0xfffffA00 /* LSSA */
 	moveb	#0x28,   0xfffffA05	/* LVPW */
 	movew	#0x280,  0xFFFFFa08	/* LXMAX */
 	movew	#0x1df,  0xFFFFFa0a	/* LYMAX */

arch/m68k/platform/coldfire/entry.S

@@ -54,7 +54,6 @@ sw_usp:
 .globl ret_from_signal
 .globl sys_call_table
 .globl inthandler
-.globl fasthandler
 
 enosys:
 	mov.l	#sys_ni_syscall,%d3
@@ -63,6 +62,7 @@ enosys:
 ENTRY(system_call)
 	SAVE_ALL_SYS
 	move	#0x2000,%sr		/* enable intrs again */
+	GET_CURRENT(%d2)
 
 	cmpl	#NR_syscalls,%d0
 	jcc	enosys
@@ -166,6 +166,7 @@ Lsignal_return:
  */
 ENTRY(inthandler)
 	SAVE_ALL_INT
+	GET_CURRENT(%d2)
 
 	movew	%sp@(PT_OFF_FORMATVEC),%d0 /* put exception # in d0 */
 	andl	#0x03fc,%d0		/* mask out vector only */
@@ -191,7 +192,9 @@ ENTRY(resume)
 	movel	%sp,%a0@(TASK_THREAD+THREAD_KSP) /* save kernel stack pointer */
 	RDUSP					 /* movel %usp,%a3 */
 	movel	%a3,%a0@(TASK_THREAD+THREAD_USP) /* save thread user stack */
-
+#ifdef CONFIG_MMU
+	movel	%a1,%a2				 /* set new current */
+#endif
 	movel	%a1@(TASK_THREAD+THREAD_USP),%a3 /* restore thread user stack */
 	WRUSP					 /* movel %a3,%usp */
 	movel	%a1@(TASK_THREAD+THREAD_KSP),%sp /* restore new kernel stack */

arch/m68k/platform/coldfire/head.S

@@ -3,7 +3,7 @@
 /*
  *	head.S -- common startup code for ColdFire CPUs.
  *
- *	(C) Copyright 1999-2010, Greg Ungerer <gerg@snapgear.com>.
+ *	(C) Copyright 1999-2011, Greg Ungerer <gerg@snapgear.com>.
  */
 
 /*****************************************************************************/
@@ -13,6 +13,7 @@
 #include <asm/asm-offsets.h>
 #include <asm/coldfire.h>
 #include <asm/mcfsim.h>
+#include <asm/mcfmmu.h>
 #include <asm/thread_info.h>
 
 /*****************************************************************************/
@@ -135,6 +136,14 @@ _init_sp:
 
 __HEAD
 
+#ifdef CONFIG_MMU
+_start0:
+	jmp	_start
+.global kernel_pg_dir
+.equ	kernel_pg_dir,_start0
+.equ	.,_start0+0x1000
+#endif
+
 /*
  *	This is the codes first entry point. This is where it all
  *	begins...
@@ -143,6 +152,9 @@ __HEAD
 _start:
 	nop					/* filler */
 	movew	#0x2700, %sr			/* no interrupts */
+	movel	#CACHE_INIT,%d0			/* disable cache */
+	movec	%d0,%CACR
+	nop
 #if defined(CONFIG_UBOOT)
 	movel	%sp,_init_sp			/* save initial stack pointer */
 #endif
@@ -176,9 +188,6 @@ _start:
 	 *	it is very similar. Define the exact settings in the headers
 	 *	then the code here is the same for all.
 	 */
-	movel	#CACHE_INIT,%d0			/* invalidate whole cache */
-	movec	%d0,%CACR
-	nop
 	movel	#ACR0_MODE,%d0			/* set RAM region for caching */
 	movec	%d0,%ACR0
 	movel	#ACR1_MODE,%d0			/* anything else to cache? */
@@ -193,6 +202,26 @@ _start:
 	movec	%d0,%CACR
 	nop
 
+#ifdef CONFIG_MMU
+	/*
+	 *	Identity mapping for the kernel region.
+	 */
+	movel	#(MMUBASE+1),%d0		/* enable MMUBAR registers */
+	movec	%d0,%MMUBAR
+	movel	#MMUOR_CA,%d0			/* clear TLB entries */
+	movel	%d0,MMUOR
+	movel	#0,%d0				/* set ASID to 0 */
+	movec	%d0,%asid
+
+	movel	#MMUCR_EN,%d0			/* Enable the identity map */
+	movel	%d0,MMUCR
+	nop					/* sync i-pipeline */
+
+	movel	#_vstart,%a0			/* jump to "virtual" space */
+	jmp	%a0@
+_vstart:
+#endif /* CONFIG_MMU */
+
 #ifdef CONFIG_ROMFS_FS
 	/*
 	 *	Move ROM filesystem above bss :-)
@@ -238,6 +267,22 @@ _clear_bss:
 	lea	init_thread_union,%a0
 	lea	THREAD_SIZE(%a0),%sp
 
+#ifdef CONFIG_MMU
+.global m68k_cputype
+.global m68k_mmutype
+.global m68k_fputype
+.global m68k_machtype
+	movel	#CPU_COLDFIRE,%d0
+	movel	%d0,m68k_cputype		/* Mark us as a ColdFire */
+	movel	#MMU_COLDFIRE,%d0
+	movel	%d0,m68k_mmutype
+	movel	#FPU_COLDFIRE,%d0
+	movel	%d0,m68k_fputype
+	movel	#MACH_M54XX,%d0
+	movel	%d0,m68k_machtype		/* Mark us as a 54xx machine */
+	lea	init_task,%a2			/* Set "current" init task */
+#endif
+
 	/*
 	 *	Assember start up done, start code proper.
 	 */

arch/m68k/platform/coldfire/sltimers.c

@@ -98,16 +98,19 @@ static struct irqaction mcfslt_timer_irq = {
 static cycle_t mcfslt_read_clk(struct clocksource *cs)
 {
 	unsigned long flags;
-	u32 cycles;
-	u16 scnt;
+	u32 cycles, scnt;
 
 	local_irq_save(flags);
 	scnt = __raw_readl(TA(MCFSLT_SCNT));
 	cycles = mcfslt_cnt;
+	if (__raw_readl(TA(MCFSLT_SSR)) & MCFSLT_SSR_TE) {
+		cycles += mcfslt_cycles_per_jiffy;
+		scnt = __raw_readl(TA(MCFSLT_SCNT));
+	}
 	local_irq_restore(flags);
 
 	/* subtract because slice timers count down */
-	return cycles - scnt;
+	return cycles + ((mcfslt_cycles_per_jiffy - 1) - scnt);
 }
 
 static struct clocksource mcfslt_clk = {