|
|
@@ -0,0 +1,1324 @@
|
|
|
+/*
|
|
|
+ *
|
|
|
+ * Common boot and setup code.
|
|
|
+ *
|
|
|
+ * Copyright (C) 2001 PPC64 Team, IBM Corp
|
|
|
+ *
|
|
|
+ * This program is free software; you can redistribute it and/or
|
|
|
+ * modify it under the terms of the GNU General Public License
|
|
|
+ * as published by the Free Software Foundation; either version
|
|
|
+ * 2 of the License, or (at your option) any later version.
|
|
|
+ */
|
|
|
+
|
|
|
+#undef DEBUG
|
|
|
+
|
|
|
+#include <linux/config.h>
|
|
|
+#include <linux/module.h>
|
|
|
+#include <linux/string.h>
|
|
|
+#include <linux/sched.h>
|
|
|
+#include <linux/init.h>
|
|
|
+#include <linux/kernel.h>
|
|
|
+#include <linux/reboot.h>
|
|
|
+#include <linux/delay.h>
|
|
|
+#include <linux/initrd.h>
|
|
|
+#include <linux/ide.h>
|
|
|
+#include <linux/seq_file.h>
|
|
|
+#include <linux/ioport.h>
|
|
|
+#include <linux/console.h>
|
|
|
+#include <linux/utsname.h>
|
|
|
+#include <linux/tty.h>
|
|
|
+#include <linux/root_dev.h>
|
|
|
+#include <linux/notifier.h>
|
|
|
+#include <linux/cpu.h>
|
|
|
+#include <linux/unistd.h>
|
|
|
+#include <linux/serial.h>
|
|
|
+#include <linux/serial_8250.h>
|
|
|
+#include <asm/io.h>
|
|
|
+#include <asm/prom.h>
|
|
|
+#include <asm/processor.h>
|
|
|
+#include <asm/pgtable.h>
|
|
|
+#include <asm/bootinfo.h>
|
|
|
+#include <asm/smp.h>
|
|
|
+#include <asm/elf.h>
|
|
|
+#include <asm/machdep.h>
|
|
|
+#include <asm/paca.h>
|
|
|
+#include <asm/ppcdebug.h>
|
|
|
+#include <asm/time.h>
|
|
|
+#include <asm/cputable.h>
|
|
|
+#include <asm/sections.h>
|
|
|
+#include <asm/btext.h>
|
|
|
+#include <asm/nvram.h>
|
|
|
+#include <asm/setup.h>
|
|
|
+#include <asm/system.h>
|
|
|
+#include <asm/rtas.h>
|
|
|
+#include <asm/iommu.h>
|
|
|
+#include <asm/serial.h>
|
|
|
+#include <asm/cache.h>
|
|
|
+#include <asm/page.h>
|
|
|
+#include <asm/mmu.h>
|
|
|
+#include <asm/lmb.h>
|
|
|
+#include <asm/iSeries/ItLpNaca.h>
|
|
|
+#include <asm/firmware.h>
|
|
|
+#include <asm/systemcfg.h>
|
|
|
+
|
|
|
+#ifdef DEBUG
|
|
|
+#define DBG(fmt...) udbg_printf(fmt)
|
|
|
+#else
|
|
|
+#define DBG(fmt...)
|
|
|
+#endif
|
|
|
+
|
|
|
+/*
|
|
|
+ * Here are some early debugging facilities. You can enable one
|
|
|
+ * but your kernel will not boot on anything else if you do so
|
|
|
+ */
|
|
|
+
|
|
|
+/* This one is for use on LPAR machines that support an HVC console
|
|
|
+ * on vterm 0
|
|
|
+ */
|
|
|
+extern void udbg_init_debug_lpar(void);
|
|
|
+/* This one is for use on Apple G5 machines
|
|
|
+ */
|
|
|
+extern void udbg_init_pmac_realmode(void);
|
|
|
+/* That's RTAS panel debug */
|
|
|
+extern void call_rtas_display_status_delay(unsigned char c);
|
|
|
+/* Here's maple real mode debug */
|
|
|
+extern void udbg_init_maple_realmode(void);
|
|
|
+
|
|
|
+#define EARLY_DEBUG_INIT() do {} while(0)
|
|
|
+
|
|
|
+#if 0
|
|
|
+#define EARLY_DEBUG_INIT() udbg_init_debug_lpar()
|
|
|
+#define EARLY_DEBUG_INIT() udbg_init_maple_realmode()
|
|
|
+#define EARLY_DEBUG_INIT() udbg_init_pmac_realmode()
|
|
|
+#define EARLY_DEBUG_INIT() \
|
|
|
+ do { udbg_putc = call_rtas_display_status_delay; } while(0)
|
|
|
+#endif
|
|
|
+
|
|
|
+/* extern void *stab; */
|
|
|
+extern unsigned long klimit;
|
|
|
+
|
|
|
+extern void mm_init_ppc64(void);
|
|
|
+extern void stab_initialize(unsigned long stab);
|
|
|
+extern void htab_initialize(void);
|
|
|
+extern void early_init_devtree(void *flat_dt);
|
|
|
+extern void unflatten_device_tree(void);
|
|
|
+
|
|
|
+extern void smp_release_cpus(void);
|
|
|
+
|
|
|
+int have_of = 1;
|
|
|
+int boot_cpuid = 0;
|
|
|
+int boot_cpuid_phys = 0;
|
|
|
+dev_t boot_dev;
|
|
|
+u64 ppc64_pft_size;
|
|
|
+
|
|
|
+struct ppc64_caches ppc64_caches;
|
|
|
+EXPORT_SYMBOL_GPL(ppc64_caches);
|
|
|
+
|
|
|
+/*
|
|
|
+ * These are used in binfmt_elf.c to put aux entries on the stack
|
|
|
+ * for each elf executable being started.
|
|
|
+ */
|
|
|
+int dcache_bsize;
|
|
|
+int icache_bsize;
|
|
|
+int ucache_bsize;
|
|
|
+
|
|
|
+/* The main machine-dep calls structure
|
|
|
+ */
|
|
|
+struct machdep_calls ppc_md;
|
|
|
+EXPORT_SYMBOL(ppc_md);
|
|
|
+
|
|
|
+#ifdef CONFIG_MAGIC_SYSRQ
|
|
|
+unsigned long SYSRQ_KEY;
|
|
|
+#endif /* CONFIG_MAGIC_SYSRQ */
|
|
|
+
|
|
|
+
|
|
|
+static int ppc64_panic_event(struct notifier_block *, unsigned long, void *);
|
|
|
+static struct notifier_block ppc64_panic_block = {
|
|
|
+ .notifier_call = ppc64_panic_event,
|
|
|
+ .priority = INT_MIN /* may not return; must be done last */
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+ * Perhaps we can put the pmac screen_info[] here
|
|
|
+ * on pmac as well so we don't need the ifdef's.
|
|
|
+ * Until we get multiple-console support in here
|
|
|
+ * that is. -- Cort
|
|
|
+ * Maybe tie it to serial consoles, since this is really what
|
|
|
+ * these processors use on existing boards. -- Dan
|
|
|
+ */
|
|
|
+struct screen_info screen_info = {
|
|
|
+ .orig_x = 0,
|
|
|
+ .orig_y = 25,
|
|
|
+ .orig_video_cols = 80,
|
|
|
+ .orig_video_lines = 25,
|
|
|
+ .orig_video_isVGA = 1,
|
|
|
+ .orig_video_points = 16
|
|
|
+};
|
|
|
+
|
|
|
+#ifdef CONFIG_SMP
|
|
|
+
|
|
|
+static int smt_enabled_cmdline;
|
|
|
+
|
|
|
+/* Look for ibm,smt-enabled OF option */
|
|
|
+static void check_smt_enabled(void)
|
|
|
+{
|
|
|
+ struct device_node *dn;
|
|
|
+ char *smt_option;
|
|
|
+
|
|
|
+ /* Allow the command line to overrule the OF option */
|
|
|
+ if (smt_enabled_cmdline)
|
|
|
+ return;
|
|
|
+
|
|
|
+ dn = of_find_node_by_path("/options");
|
|
|
+
|
|
|
+ if (dn) {
|
|
|
+ smt_option = (char *)get_property(dn, "ibm,smt-enabled", NULL);
|
|
|
+
|
|
|
+ if (smt_option) {
|
|
|
+ if (!strcmp(smt_option, "on"))
|
|
|
+ smt_enabled_at_boot = 1;
|
|
|
+ else if (!strcmp(smt_option, "off"))
|
|
|
+ smt_enabled_at_boot = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/* Look for smt-enabled= cmdline option */
|
|
|
+static int __init early_smt_enabled(char *p)
|
|
|
+{
|
|
|
+ smt_enabled_cmdline = 1;
|
|
|
+
|
|
|
+ if (!p)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ if (!strcmp(p, "on") || !strcmp(p, "1"))
|
|
|
+ smt_enabled_at_boot = 1;
|
|
|
+ else if (!strcmp(p, "off") || !strcmp(p, "0"))
|
|
|
+ smt_enabled_at_boot = 0;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+early_param("smt-enabled", early_smt_enabled);
|
|
|
+
|
|
|
+/**
|
|
|
+ * setup_cpu_maps - initialize the following cpu maps:
|
|
|
+ * cpu_possible_map
|
|
|
+ * cpu_present_map
|
|
|
+ * cpu_sibling_map
|
|
|
+ *
|
|
|
+ * Having the possible map set up early allows us to restrict allocations
|
|
|
+ * of things like irqstacks to num_possible_cpus() rather than NR_CPUS.
|
|
|
+ *
|
|
|
+ * We do not initialize the online map here; cpus set their own bits in
|
|
|
+ * cpu_online_map as they come up.
|
|
|
+ *
|
|
|
+ * This function is valid only for Open Firmware systems. finish_device_tree
|
|
|
+ * must be called before using this.
|
|
|
+ *
|
|
|
+ * While we're here, we may as well set the "physical" cpu ids in the paca.
|
|
|
+ */
|
|
|
+static void __init setup_cpu_maps(void)
|
|
|
+{
|
|
|
+ struct device_node *dn = NULL;
|
|
|
+ int cpu = 0;
|
|
|
+ int swap_cpuid = 0;
|
|
|
+
|
|
|
+ check_smt_enabled();
|
|
|
+
|
|
|
+ while ((dn = of_find_node_by_type(dn, "cpu")) && cpu < NR_CPUS) {
|
|
|
+ u32 *intserv;
|
|
|
+ int j, len = sizeof(u32), nthreads;
|
|
|
+
|
|
|
+ intserv = (u32 *)get_property(dn, "ibm,ppc-interrupt-server#s",
|
|
|
+ &len);
|
|
|
+ if (!intserv)
|
|
|
+ intserv = (u32 *)get_property(dn, "reg", NULL);
|
|
|
+
|
|
|
+ nthreads = len / sizeof(u32);
|
|
|
+
|
|
|
+ for (j = 0; j < nthreads && cpu < NR_CPUS; j++) {
|
|
|
+ cpu_set(cpu, cpu_present_map);
|
|
|
+ set_hard_smp_processor_id(cpu, intserv[j]);
|
|
|
+
|
|
|
+ if (intserv[j] == boot_cpuid_phys)
|
|
|
+ swap_cpuid = cpu;
|
|
|
+ cpu_set(cpu, cpu_possible_map);
|
|
|
+ cpu++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Swap CPU id 0 with boot_cpuid_phys, so we can always assume that
|
|
|
+ * boot cpu is logical 0.
|
|
|
+ */
|
|
|
+ if (boot_cpuid_phys != get_hard_smp_processor_id(0)) {
|
|
|
+ u32 tmp;
|
|
|
+ tmp = get_hard_smp_processor_id(0);
|
|
|
+ set_hard_smp_processor_id(0, boot_cpuid_phys);
|
|
|
+ set_hard_smp_processor_id(swap_cpuid, tmp);
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * On pSeries LPAR, we need to know how many cpus
|
|
|
+ * could possibly be added to this partition.
|
|
|
+ */
|
|
|
+ if (systemcfg->platform == PLATFORM_PSERIES_LPAR &&
|
|
|
+ (dn = of_find_node_by_path("/rtas"))) {
|
|
|
+ int num_addr_cell, num_size_cell, maxcpus;
|
|
|
+ unsigned int *ireg;
|
|
|
+
|
|
|
+ num_addr_cell = prom_n_addr_cells(dn);
|
|
|
+ num_size_cell = prom_n_size_cells(dn);
|
|
|
+
|
|
|
+ ireg = (unsigned int *)
|
|
|
+ get_property(dn, "ibm,lrdr-capacity", NULL);
|
|
|
+
|
|
|
+ if (!ireg)
|
|
|
+ goto out;
|
|
|
+
|
|
|
+ maxcpus = ireg[num_addr_cell + num_size_cell];
|
|
|
+
|
|
|
+ /* Double maxcpus for processors which have SMT capability */
|
|
|
+ if (cpu_has_feature(CPU_FTR_SMT))
|
|
|
+ maxcpus *= 2;
|
|
|
+
|
|
|
+ if (maxcpus > NR_CPUS) {
|
|
|
+ printk(KERN_WARNING
|
|
|
+ "Partition configured for %d cpus, "
|
|
|
+ "operating system maximum is %d.\n",
|
|
|
+ maxcpus, NR_CPUS);
|
|
|
+ maxcpus = NR_CPUS;
|
|
|
+ } else
|
|
|
+ printk(KERN_INFO "Partition configured for %d cpus.\n",
|
|
|
+ maxcpus);
|
|
|
+
|
|
|
+ for (cpu = 0; cpu < maxcpus; cpu++)
|
|
|
+ cpu_set(cpu, cpu_possible_map);
|
|
|
+ out:
|
|
|
+ of_node_put(dn);
|
|
|
+ }
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Do the sibling map; assume only two threads per processor.
|
|
|
+ */
|
|
|
+ for_each_cpu(cpu) {
|
|
|
+ cpu_set(cpu, cpu_sibling_map[cpu]);
|
|
|
+ if (cpu_has_feature(CPU_FTR_SMT))
|
|
|
+ cpu_set(cpu ^ 0x1, cpu_sibling_map[cpu]);
|
|
|
+ }
|
|
|
+
|
|
|
+ systemcfg->processorCount = num_present_cpus();
|
|
|
+}
|
|
|
+#endif /* CONFIG_SMP */
|
|
|
+
|
|
|
+extern struct machdep_calls pSeries_md;
|
|
|
+extern struct machdep_calls pmac_md;
|
|
|
+extern struct machdep_calls maple_md;
|
|
|
+extern struct machdep_calls bpa_md;
|
|
|
+extern struct machdep_calls iseries_md;
|
|
|
+
|
|
|
+/* Ultimately, stuff them in an elf section like initcalls... */
|
|
|
+static struct machdep_calls __initdata *machines[] = {
|
|
|
+#ifdef CONFIG_PPC_PSERIES
|
|
|
+ &pSeries_md,
|
|
|
+#endif /* CONFIG_PPC_PSERIES */
|
|
|
+#ifdef CONFIG_PPC_PMAC
|
|
|
+ &pmac_md,
|
|
|
+#endif /* CONFIG_PPC_PMAC */
|
|
|
+#ifdef CONFIG_PPC_MAPLE
|
|
|
+ &maple_md,
|
|
|
+#endif /* CONFIG_PPC_MAPLE */
|
|
|
+#ifdef CONFIG_PPC_BPA
|
|
|
+ &bpa_md,
|
|
|
+#endif
|
|
|
+#ifdef CONFIG_PPC_ISERIES
|
|
|
+ &iseries_md,
|
|
|
+#endif
|
|
|
+ NULL
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+ * Early initialization entry point. This is called by head.S
|
|
|
+ * with MMU translation disabled. We rely on the "feature" of
|
|
|
+ * the CPU that ignores the top 2 bits of the address in real
|
|
|
+ * mode so we can access kernel globals normally provided we
|
|
|
+ * only toy with things in the RMO region. From here, we do
|
|
|
+ * some early parsing of the device-tree to setup out LMB
|
|
|
+ * data structures, and allocate & initialize the hash table
|
|
|
+ * and segment tables so we can start running with translation
|
|
|
+ * enabled.
|
|
|
+ *
|
|
|
+ * It is this function which will call the probe() callback of
|
|
|
+ * the various platform types and copy the matching one to the
|
|
|
+ * global ppc_md structure. Your platform can eventually do
|
|
|
+ * some very early initializations from the probe() routine, but
|
|
|
+ * this is not recommended, be very careful as, for example, the
|
|
|
+ * device-tree is not accessible via normal means at this point.
|
|
|
+ */
|
|
|
+
|
|
|
+void __init early_setup(unsigned long dt_ptr)
|
|
|
+{
|
|
|
+ struct paca_struct *lpaca = get_paca();
|
|
|
+ static struct machdep_calls **mach;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Enable early debugging if any specified (see top of
|
|
|
+ * this file)
|
|
|
+ */
|
|
|
+ EARLY_DEBUG_INIT();
|
|
|
+
|
|
|
+ DBG(" -> early_setup()\n");
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Fill the default DBG level (do we want to keep
|
|
|
+ * that old mecanism around forever ?)
|
|
|
+ */
|
|
|
+ ppcdbg_initialize();
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Do early initializations using the flattened device
|
|
|
+ * tree, like retreiving the physical memory map or
|
|
|
+ * calculating/retreiving the hash table size
|
|
|
+ */
|
|
|
+ early_init_devtree(__va(dt_ptr));
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Iterate all ppc_md structures until we find the proper
|
|
|
+ * one for the current machine type
|
|
|
+ */
|
|
|
+ DBG("Probing machine type for platform %x...\n",
|
|
|
+ systemcfg->platform);
|
|
|
+
|
|
|
+ for (mach = machines; *mach; mach++) {
|
|
|
+ if ((*mach)->probe(systemcfg->platform))
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ /* What can we do if we didn't find ? */
|
|
|
+ if (*mach == NULL) {
|
|
|
+ DBG("No suitable machine found !\n");
|
|
|
+ for (;;);
|
|
|
+ }
|
|
|
+ ppc_md = **mach;
|
|
|
+
|
|
|
+ DBG("Found, Initializing memory management...\n");
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Initialize stab / SLB management
|
|
|
+ */
|
|
|
+ if (!firmware_has_feature(FW_FEATURE_ISERIES))
|
|
|
+ stab_initialize(lpaca->stab_real);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Initialize the MMU Hash table and create the linear mapping
|
|
|
+ * of memory
|
|
|
+ */
|
|
|
+ htab_initialize();
|
|
|
+
|
|
|
+ DBG(" <- early_setup()\n");
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+ * Initialize some remaining members of the ppc64_caches and systemcfg structures
|
|
|
+ * (at least until we get rid of them completely). This is mostly some
|
|
|
+ * cache informations about the CPU that will be used by cache flush
|
|
|
+ * routines and/or provided to userland
|
|
|
+ */
|
|
|
+static void __init initialize_cache_info(void)
|
|
|
+{
|
|
|
+ struct device_node *np;
|
|
|
+ unsigned long num_cpus = 0;
|
|
|
+
|
|
|
+ DBG(" -> initialize_cache_info()\n");
|
|
|
+
|
|
|
+ for (np = NULL; (np = of_find_node_by_type(np, "cpu"));) {
|
|
|
+ num_cpus += 1;
|
|
|
+
|
|
|
+ /* We're assuming *all* of the CPUs have the same
|
|
|
+ * d-cache and i-cache sizes... -Peter
|
|
|
+ */
|
|
|
+
|
|
|
+ if ( num_cpus == 1 ) {
|
|
|
+ u32 *sizep, *lsizep;
|
|
|
+ u32 size, lsize;
|
|
|
+ const char *dc, *ic;
|
|
|
+
|
|
|
+ /* Then read cache informations */
|
|
|
+ if (systemcfg->platform == PLATFORM_POWERMAC) {
|
|
|
+ dc = "d-cache-block-size";
|
|
|
+ ic = "i-cache-block-size";
|
|
|
+ } else {
|
|
|
+ dc = "d-cache-line-size";
|
|
|
+ ic = "i-cache-line-size";
|
|
|
+ }
|
|
|
+
|
|
|
+ size = 0;
|
|
|
+ lsize = cur_cpu_spec->dcache_bsize;
|
|
|
+ sizep = (u32 *)get_property(np, "d-cache-size", NULL);
|
|
|
+ if (sizep != NULL)
|
|
|
+ size = *sizep;
|
|
|
+ lsizep = (u32 *) get_property(np, dc, NULL);
|
|
|
+ if (lsizep != NULL)
|
|
|
+ lsize = *lsizep;
|
|
|
+ if (sizep == 0 || lsizep == 0)
|
|
|
+ DBG("Argh, can't find dcache properties ! "
|
|
|
+ "sizep: %p, lsizep: %p\n", sizep, lsizep);
|
|
|
+
|
|
|
+ systemcfg->dcache_size = ppc64_caches.dsize = size;
|
|
|
+ systemcfg->dcache_line_size =
|
|
|
+ ppc64_caches.dline_size = lsize;
|
|
|
+ ppc64_caches.log_dline_size = __ilog2(lsize);
|
|
|
+ ppc64_caches.dlines_per_page = PAGE_SIZE / lsize;
|
|
|
+
|
|
|
+ size = 0;
|
|
|
+ lsize = cur_cpu_spec->icache_bsize;
|
|
|
+ sizep = (u32 *)get_property(np, "i-cache-size", NULL);
|
|
|
+ if (sizep != NULL)
|
|
|
+ size = *sizep;
|
|
|
+ lsizep = (u32 *)get_property(np, ic, NULL);
|
|
|
+ if (lsizep != NULL)
|
|
|
+ lsize = *lsizep;
|
|
|
+ if (sizep == 0 || lsizep == 0)
|
|
|
+ DBG("Argh, can't find icache properties ! "
|
|
|
+ "sizep: %p, lsizep: %p\n", sizep, lsizep);
|
|
|
+
|
|
|
+ systemcfg->icache_size = ppc64_caches.isize = size;
|
|
|
+ systemcfg->icache_line_size =
|
|
|
+ ppc64_caches.iline_size = lsize;
|
|
|
+ ppc64_caches.log_iline_size = __ilog2(lsize);
|
|
|
+ ppc64_caches.ilines_per_page = PAGE_SIZE / lsize;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Add an eye catcher and the systemcfg layout version number */
|
|
|
+ strcpy(systemcfg->eye_catcher, "SYSTEMCFG:PPC64");
|
|
|
+ systemcfg->version.major = SYSTEMCFG_MAJOR;
|
|
|
+ systemcfg->version.minor = SYSTEMCFG_MINOR;
|
|
|
+ systemcfg->processor = mfspr(SPRN_PVR);
|
|
|
+
|
|
|
+ DBG(" <- initialize_cache_info()\n");
|
|
|
+}
|
|
|
+
|
|
|
+static void __init check_for_initrd(void)
|
|
|
+{
|
|
|
+#ifdef CONFIG_BLK_DEV_INITRD
|
|
|
+ u64 *prop;
|
|
|
+
|
|
|
+ DBG(" -> check_for_initrd()\n");
|
|
|
+
|
|
|
+ if (of_chosen) {
|
|
|
+ prop = (u64 *)get_property(of_chosen,
|
|
|
+ "linux,initrd-start", NULL);
|
|
|
+ if (prop != NULL) {
|
|
|
+ initrd_start = (unsigned long)__va(*prop);
|
|
|
+ prop = (u64 *)get_property(of_chosen,
|
|
|
+ "linux,initrd-end", NULL);
|
|
|
+ if (prop != NULL) {
|
|
|
+ initrd_end = (unsigned long)__va(*prop);
|
|
|
+ initrd_below_start_ok = 1;
|
|
|
+ } else
|
|
|
+ initrd_start = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ /* If we were passed an initrd, set the ROOT_DEV properly if the values
|
|
|
+ * look sensible. If not, clear initrd reference.
|
|
|
+ */
|
|
|
+ if (initrd_start >= KERNELBASE && initrd_end >= KERNELBASE &&
|
|
|
+ initrd_end > initrd_start)
|
|
|
+ ROOT_DEV = Root_RAM0;
|
|
|
+ else
|
|
|
+ initrd_start = initrd_end = 0;
|
|
|
+
|
|
|
+ if (initrd_start)
|
|
|
+ printk("Found initrd at 0x%lx:0x%lx\n", initrd_start, initrd_end);
|
|
|
+
|
|
|
+ DBG(" <- check_for_initrd()\n");
|
|
|
+#endif /* CONFIG_BLK_DEV_INITRD */
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Do some initial setup of the system. The parameters are those which
|
|
|
+ * were passed in from the bootloader.
|
|
|
+ */
|
|
|
+void __init setup_system(void)
|
|
|
+{
|
|
|
+ DBG(" -> setup_system()\n");
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Unflatten the device-tree passed by prom_init or kexec
|
|
|
+ */
|
|
|
+ unflatten_device_tree();
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Fill the ppc64_caches & systemcfg structures with informations
|
|
|
+ * retreived from the device-tree. Need to be called before
|
|
|
+ * finish_device_tree() since the later requires some of the
|
|
|
+ * informations filled up here to properly parse the interrupt
|
|
|
+ * tree.
|
|
|
+ * It also sets up the cache line sizes which allows to call
|
|
|
+ * routines like flush_icache_range (used by the hash init
|
|
|
+ * later on).
|
|
|
+ */
|
|
|
+ initialize_cache_info();
|
|
|
+
|
|
|
+#ifdef CONFIG_PPC_RTAS
|
|
|
+ /*
|
|
|
+ * Initialize RTAS if available
|
|
|
+ */
|
|
|
+ rtas_initialize();
|
|
|
+#endif /* CONFIG_PPC_RTAS */
|
|
|
+ printk("%s:%d rtas.dev=%p (@ %p)\n", __FILE__, __LINE__, rtas.dev,
|
|
|
+ &rtas.dev);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Check if we have an initrd provided via the device-tree
|
|
|
+ */
|
|
|
+ check_for_initrd();
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Do some platform specific early initializations, that includes
|
|
|
+ * setting up the hash table pointers. It also sets up some interrupt-mapping
|
|
|
+ * related options that will be used by finish_device_tree()
|
|
|
+ */
|
|
|
+ ppc_md.init_early();
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * "Finish" the device-tree, that is do the actual parsing of
|
|
|
+ * some of the properties like the interrupt map
|
|
|
+ */
|
|
|
+ finish_device_tree();
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Initialize xmon
|
|
|
+ */
|
|
|
+#ifdef CONFIG_XMON_DEFAULT
|
|
|
+ xmon_init(1);
|
|
|
+#endif
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+ /*
|
|
|
+ * Register early console
|
|
|
+ */
|
|
|
+ register_early_udbg_console();
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+ /* Save unparsed command line copy for /proc/cmdline */
|
|
|
+ strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
|
|
|
+
|
|
|
+ parse_early_param();
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+#ifdef CONFIG_SMP
|
|
|
+ /*
|
|
|
+ * iSeries has already initialized the cpu maps at this point.
|
|
|
+ */
|
|
|
+ setup_cpu_maps();
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+ /* Release secondary cpus out of their spinloops at 0x60 now that
|
|
|
+ * we can map physical -> logical CPU ids
|
|
|
+ */
|
|
|
+ smp_release_cpus();
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+#endif
|
|
|
+
|
|
|
+ printk("Starting Linux PPC64 %s\n", system_utsname.version);
|
|
|
+
|
|
|
+ printk("-----------------------------------------------------\n");
|
|
|
+ printk("ppc64_pft_size = 0x%lx\n", ppc64_pft_size);
|
|
|
+ printk("ppc64_debug_switch = 0x%lx\n", ppc64_debug_switch);
|
|
|
+ printk("ppc64_interrupt_controller = 0x%ld\n", ppc64_interrupt_controller);
|
|
|
+ printk("systemcfg = 0x%p\n", systemcfg);
|
|
|
+ printk("systemcfg->platform = 0x%x\n", systemcfg->platform);
|
|
|
+ printk("systemcfg->processorCount = 0x%lx\n", systemcfg->processorCount);
|
|
|
+ printk("systemcfg->physicalMemorySize = 0x%lx\n", systemcfg->physicalMemorySize);
|
|
|
+ printk("ppc64_caches.dcache_line_size = 0x%x\n",
|
|
|
+ ppc64_caches.dline_size);
|
|
|
+ printk("ppc64_caches.icache_line_size = 0x%x\n",
|
|
|
+ ppc64_caches.iline_size);
|
|
|
+ printk("htab_address = 0x%p\n", htab_address);
|
|
|
+ printk("htab_hash_mask = 0x%lx\n", htab_hash_mask);
|
|
|
+ printk("-----------------------------------------------------\n");
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+ mm_init_ppc64();
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+ DBG(" <- setup_system()\n");
|
|
|
+}
|
|
|
+
|
|
|
+/* also used by kexec */
|
|
|
+void machine_shutdown(void)
|
|
|
+{
|
|
|
+ if (ppc_md.nvram_sync)
|
|
|
+ ppc_md.nvram_sync();
|
|
|
+}
|
|
|
+
|
|
|
+void machine_restart(char *cmd)
|
|
|
+{
|
|
|
+ machine_shutdown();
|
|
|
+ ppc_md.restart(cmd);
|
|
|
+#ifdef CONFIG_SMP
|
|
|
+ smp_send_stop();
|
|
|
+#endif
|
|
|
+ printk(KERN_EMERG "System Halted, OK to turn off power\n");
|
|
|
+ local_irq_disable();
|
|
|
+ while (1) ;
|
|
|
+}
|
|
|
+
|
|
|
+void machine_power_off(void)
|
|
|
+{
|
|
|
+ machine_shutdown();
|
|
|
+ ppc_md.power_off();
|
|
|
+#ifdef CONFIG_SMP
|
|
|
+ smp_send_stop();
|
|
|
+#endif
|
|
|
+ printk(KERN_EMERG "System Halted, OK to turn off power\n");
|
|
|
+ local_irq_disable();
|
|
|
+ while (1) ;
|
|
|
+}
|
|
|
+/* Used by the G5 thermal driver */
|
|
|
+EXPORT_SYMBOL_GPL(machine_power_off);
|
|
|
+
|
|
|
+void machine_halt(void)
|
|
|
+{
|
|
|
+ machine_shutdown();
|
|
|
+ ppc_md.halt();
|
|
|
+#ifdef CONFIG_SMP
|
|
|
+ smp_send_stop();
|
|
|
+#endif
|
|
|
+ printk(KERN_EMERG "System Halted, OK to turn off power\n");
|
|
|
+ local_irq_disable();
|
|
|
+ while (1) ;
|
|
|
+}
|
|
|
+
|
|
|
+static int ppc64_panic_event(struct notifier_block *this,
|
|
|
+ unsigned long event, void *ptr)
|
|
|
+{
|
|
|
+ ppc_md.panic((char *)ptr); /* May not return */
|
|
|
+ return NOTIFY_DONE;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+#ifdef CONFIG_SMP
|
|
|
+DEFINE_PER_CPU(unsigned int, pvr);
|
|
|
+#endif
|
|
|
+
|
|
|
+static int show_cpuinfo(struct seq_file *m, void *v)
|
|
|
+{
|
|
|
+ unsigned long cpu_id = (unsigned long)v - 1;
|
|
|
+ unsigned int pvr;
|
|
|
+ unsigned short maj;
|
|
|
+ unsigned short min;
|
|
|
+
|
|
|
+ if (cpu_id == NR_CPUS) {
|
|
|
+ seq_printf(m, "timebase\t: %lu\n", ppc_tb_freq);
|
|
|
+
|
|
|
+ if (ppc_md.get_cpuinfo != NULL)
|
|
|
+ ppc_md.get_cpuinfo(m);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* We only show online cpus: disable preempt (overzealous, I
|
|
|
+ * knew) to prevent cpu going down. */
|
|
|
+ preempt_disable();
|
|
|
+ if (!cpu_online(cpu_id)) {
|
|
|
+ preempt_enable();
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+
|
|
|
+#ifdef CONFIG_SMP
|
|
|
+ pvr = per_cpu(pvr, cpu_id);
|
|
|
+#else
|
|
|
+ pvr = mfspr(SPRN_PVR);
|
|
|
+#endif
|
|
|
+ maj = (pvr >> 8) & 0xFF;
|
|
|
+ min = pvr & 0xFF;
|
|
|
+
|
|
|
+ seq_printf(m, "processor\t: %lu\n", cpu_id);
|
|
|
+ seq_printf(m, "cpu\t\t: ");
|
|
|
+
|
|
|
+ if (cur_cpu_spec->pvr_mask)
|
|
|
+ seq_printf(m, "%s", cur_cpu_spec->cpu_name);
|
|
|
+ else
|
|
|
+ seq_printf(m, "unknown (%08x)", pvr);
|
|
|
+
|
|
|
+#ifdef CONFIG_ALTIVEC
|
|
|
+ if (cpu_has_feature(CPU_FTR_ALTIVEC))
|
|
|
+ seq_printf(m, ", altivec supported");
|
|
|
+#endif /* CONFIG_ALTIVEC */
|
|
|
+
|
|
|
+ seq_printf(m, "\n");
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Assume here that all clock rates are the same in a
|
|
|
+ * smp system. -- Cort
|
|
|
+ */
|
|
|
+ seq_printf(m, "clock\t\t: %lu.%06luMHz\n", ppc_proc_freq / 1000000,
|
|
|
+ ppc_proc_freq % 1000000);
|
|
|
+
|
|
|
+ seq_printf(m, "revision\t: %hd.%hd\n\n", maj, min);
|
|
|
+
|
|
|
+ preempt_enable();
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static void *c_start(struct seq_file *m, loff_t *pos)
|
|
|
+{
|
|
|
+ return *pos <= NR_CPUS ? (void *)((*pos)+1) : NULL;
|
|
|
+}
|
|
|
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
|
|
|
+{
|
|
|
+ ++*pos;
|
|
|
+ return c_start(m, pos);
|
|
|
+}
|
|
|
+static void c_stop(struct seq_file *m, void *v)
|
|
|
+{
|
|
|
+}
|
|
|
+struct seq_operations cpuinfo_op = {
|
|
|
+ .start =c_start,
|
|
|
+ .next = c_next,
|
|
|
+ .stop = c_stop,
|
|
|
+ .show = show_cpuinfo,
|
|
|
+};
|
|
|
+
|
|
|
+/*
|
|
|
+ * These three variables are used to save values passed to us by prom_init()
|
|
|
+ * via the device tree. The TCE variables are needed because with a memory_limit
|
|
|
+ * in force we may need to explicitly map the TCE are at the top of RAM.
|
|
|
+ */
|
|
|
+unsigned long memory_limit;
|
|
|
+unsigned long tce_alloc_start;
|
|
|
+unsigned long tce_alloc_end;
|
|
|
+
|
|
|
+#ifdef CONFIG_PPC_ISERIES
|
|
|
+/*
|
|
|
+ * On iSeries we just parse the mem=X option from the command line.
|
|
|
+ * On pSeries it's a bit more complicated, see prom_init_mem()
|
|
|
+ */
|
|
|
+static int __init early_parsemem(char *p)
|
|
|
+{
|
|
|
+ if (!p)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ memory_limit = ALIGN(memparse(p, &p), PAGE_SIZE);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+early_param("mem", early_parsemem);
|
|
|
+#endif /* CONFIG_PPC_ISERIES */
|
|
|
+
|
|
|
+#ifdef CONFIG_PPC_MULTIPLATFORM
|
|
|
+static int __init set_preferred_console(void)
|
|
|
+{
|
|
|
+ struct device_node *prom_stdout = NULL;
|
|
|
+ char *name;
|
|
|
+ u32 *spd;
|
|
|
+ int offset = 0;
|
|
|
+
|
|
|
+ DBG(" -> set_preferred_console()\n");
|
|
|
+
|
|
|
+ /* The user has requested a console so this is already set up. */
|
|
|
+ if (strstr(saved_command_line, "console=")) {
|
|
|
+ DBG(" console was specified !\n");
|
|
|
+ return -EBUSY;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (!of_chosen) {
|
|
|
+ DBG(" of_chosen is NULL !\n");
|
|
|
+ return -ENODEV;
|
|
|
+ }
|
|
|
+ /* We are getting a weird phandle from OF ... */
|
|
|
+ /* ... So use the full path instead */
|
|
|
+ name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
|
|
|
+ if (name == NULL) {
|
|
|
+ DBG(" no linux,stdout-path !\n");
|
|
|
+ return -ENODEV;
|
|
|
+ }
|
|
|
+ prom_stdout = of_find_node_by_path(name);
|
|
|
+ if (!prom_stdout) {
|
|
|
+ DBG(" can't find stdout package %s !\n", name);
|
|
|
+ return -ENODEV;
|
|
|
+ }
|
|
|
+ DBG("stdout is %s\n", prom_stdout->full_name);
|
|
|
+
|
|
|
+ name = (char *)get_property(prom_stdout, "name", NULL);
|
|
|
+ if (!name) {
|
|
|
+ DBG(" stdout package has no name !\n");
|
|
|
+ goto not_found;
|
|
|
+ }
|
|
|
+ spd = (u32 *)get_property(prom_stdout, "current-speed", NULL);
|
|
|
+
|
|
|
+ if (0)
|
|
|
+ ;
|
|
|
+#ifdef CONFIG_SERIAL_8250_CONSOLE
|
|
|
+ else if (strcmp(name, "serial") == 0) {
|
|
|
+ int i;
|
|
|
+ u32 *reg = (u32 *)get_property(prom_stdout, "reg", &i);
|
|
|
+ if (i > 8) {
|
|
|
+ switch (reg[1]) {
|
|
|
+ case 0x3f8:
|
|
|
+ offset = 0;
|
|
|
+ break;
|
|
|
+ case 0x2f8:
|
|
|
+ offset = 1;
|
|
|
+ break;
|
|
|
+ case 0x898:
|
|
|
+ offset = 2;
|
|
|
+ break;
|
|
|
+ case 0x890:
|
|
|
+ offset = 3;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ /* We dont recognise the serial port */
|
|
|
+ goto not_found;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif /* CONFIG_SERIAL_8250_CONSOLE */
|
|
|
+#ifdef CONFIG_PPC_PSERIES
|
|
|
+ else if (strcmp(name, "vty") == 0) {
|
|
|
+ u32 *reg = (u32 *)get_property(prom_stdout, "reg", NULL);
|
|
|
+ char *compat = (char *)get_property(prom_stdout, "compatible", NULL);
|
|
|
+
|
|
|
+ if (reg && compat && (strcmp(compat, "hvterm-protocol") == 0)) {
|
|
|
+ /* Host Virtual Serial Interface */
|
|
|
+ int offset;
|
|
|
+ switch (reg[0]) {
|
|
|
+ case 0x30000000:
|
|
|
+ offset = 0;
|
|
|
+ break;
|
|
|
+ case 0x30000001:
|
|
|
+ offset = 1;
|
|
|
+ break;
|
|
|
+ default:
|
|
|
+ goto not_found;
|
|
|
+ }
|
|
|
+ of_node_put(prom_stdout);
|
|
|
+ DBG("Found hvsi console at offset %d\n", offset);
|
|
|
+ return add_preferred_console("hvsi", offset, NULL);
|
|
|
+ } else {
|
|
|
+ /* pSeries LPAR virtual console */
|
|
|
+ of_node_put(prom_stdout);
|
|
|
+ DBG("Found hvc console\n");
|
|
|
+ return add_preferred_console("hvc", 0, NULL);
|
|
|
+ }
|
|
|
+ }
|
|
|
+#endif /* CONFIG_PPC_PSERIES */
|
|
|
+#ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE
|
|
|
+ else if (strcmp(name, "ch-a") == 0)
|
|
|
+ offset = 0;
|
|
|
+ else if (strcmp(name, "ch-b") == 0)
|
|
|
+ offset = 1;
|
|
|
+#endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */
|
|
|
+ else
|
|
|
+ goto not_found;
|
|
|
+ of_node_put(prom_stdout);
|
|
|
+
|
|
|
+ DBG("Found serial console at ttyS%d\n", offset);
|
|
|
+
|
|
|
+ if (spd) {
|
|
|
+ static char __initdata opt[16];
|
|
|
+ sprintf(opt, "%d", *spd);
|
|
|
+ return add_preferred_console("ttyS", offset, opt);
|
|
|
+ } else
|
|
|
+ return add_preferred_console("ttyS", offset, NULL);
|
|
|
+
|
|
|
+ not_found:
|
|
|
+ DBG("No preferred console found !\n");
|
|
|
+ of_node_put(prom_stdout);
|
|
|
+ return -ENODEV;
|
|
|
+}
|
|
|
+console_initcall(set_preferred_console);
|
|
|
+#endif /* CONFIG_PPC_MULTIPLATFORM */
|
|
|
+
|
|
|
+#ifdef CONFIG_IRQSTACKS
|
|
|
+static void __init irqstack_early_init(void)
|
|
|
+{
|
|
|
+ unsigned int i;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * interrupt stacks must be under 256MB, we cannot afford to take
|
|
|
+ * SLB misses on them.
|
|
|
+ */
|
|
|
+ for_each_cpu(i) {
|
|
|
+ softirq_ctx[i] = (struct thread_info *)__va(lmb_alloc_base(THREAD_SIZE,
|
|
|
+ THREAD_SIZE, 0x10000000));
|
|
|
+ hardirq_ctx[i] = (struct thread_info *)__va(lmb_alloc_base(THREAD_SIZE,
|
|
|
+ THREAD_SIZE, 0x10000000));
|
|
|
+ }
|
|
|
+}
|
|
|
+#else
|
|
|
+#define irqstack_early_init()
|
|
|
+#endif
|
|
|
+
|
|
|
+/*
|
|
|
+ * Stack space used when we detect a bad kernel stack pointer, and
|
|
|
+ * early in SMP boots before relocation is enabled.
|
|
|
+ */
|
|
|
+static void __init emergency_stack_init(void)
|
|
|
+{
|
|
|
+ unsigned long limit;
|
|
|
+ unsigned int i;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Emergency stacks must be under 256MB, we cannot afford to take
|
|
|
+ * SLB misses on them. The ABI also requires them to be 128-byte
|
|
|
+ * aligned.
|
|
|
+ *
|
|
|
+ * Since we use these as temporary stacks during secondary CPU
|
|
|
+ * bringup, we need to get at them in real mode. This means they
|
|
|
+ * must also be within the RMO region.
|
|
|
+ */
|
|
|
+ limit = min(0x10000000UL, lmb.rmo_size);
|
|
|
+
|
|
|
+ for_each_cpu(i)
|
|
|
+ paca[i].emergency_sp = __va(lmb_alloc_base(PAGE_SIZE, 128,
|
|
|
+ limit)) + PAGE_SIZE;
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Called from setup_arch to initialize the bitmap of available
|
|
|
+ * syscalls in the systemcfg page
|
|
|
+ */
|
|
|
+void __init setup_syscall_map(void)
|
|
|
+{
|
|
|
+ unsigned int i, count64 = 0, count32 = 0;
|
|
|
+ extern unsigned long *sys_call_table;
|
|
|
+ extern unsigned long sys_ni_syscall;
|
|
|
+
|
|
|
+
|
|
|
+ for (i = 0; i < __NR_syscalls; i++) {
|
|
|
+ if (sys_call_table[i*2] != sys_ni_syscall) {
|
|
|
+ count64++;
|
|
|
+ systemcfg->syscall_map_64[i >> 5] |=
|
|
|
+ 0x80000000UL >> (i & 0x1f);
|
|
|
+ }
|
|
|
+ if (sys_call_table[i*2+1] != sys_ni_syscall) {
|
|
|
+ count32++;
|
|
|
+ systemcfg->syscall_map_32[i >> 5] |=
|
|
|
+ 0x80000000UL >> (i & 0x1f);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ printk(KERN_INFO "Syscall map setup, %d 32-bit and %d 64-bit syscalls\n",
|
|
|
+ count32, count64);
|
|
|
+}
|
|
|
+
|
|
|
+/*
|
|
|
+ * Called into from start_kernel, after lock_kernel has been called.
|
|
|
+ * Initializes bootmem, which is unsed to manage page allocation until
|
|
|
+ * mem_init is called.
|
|
|
+ */
|
|
|
+void __init setup_arch(char **cmdline_p)
|
|
|
+{
|
|
|
+ extern void do_init_bootmem(void);
|
|
|
+
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+ ppc64_boot_msg(0x12, "Setup Arch");
|
|
|
+
|
|
|
+ *cmdline_p = cmd_line;
|
|
|
+
|
|
|
+ /*
|
|
|
+ * Set cache line size based on type of cpu as a default.
|
|
|
+ * Systems with OF can look in the properties on the cpu node(s)
|
|
|
+ * for a possibly more accurate value.
|
|
|
+ */
|
|
|
+ dcache_bsize = ppc64_caches.dline_size;
|
|
|
+ icache_bsize = ppc64_caches.iline_size;
|
|
|
+
|
|
|
+ /* reboot on panic */
|
|
|
+ panic_timeout = 180;
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+
|
|
|
+ if (ppc_md.panic)
|
|
|
+ notifier_chain_register(&panic_notifier_list, &ppc64_panic_block);
|
|
|
+
|
|
|
+ init_mm.start_code = PAGE_OFFSET;
|
|
|
+ init_mm.end_code = (unsigned long) _etext;
|
|
|
+ init_mm.end_data = (unsigned long) _edata;
|
|
|
+ init_mm.brk = klimit;
|
|
|
+
|
|
|
+ irqstack_early_init();
|
|
|
+ emergency_stack_init();
|
|
|
+
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+ stabs_alloc();
|
|
|
+
|
|
|
+ /* set up the bootmem stuff with available memory */
|
|
|
+ do_init_bootmem();
|
|
|
+ sparse_init();
|
|
|
+
|
|
|
+ printk("%s:%d rtas.dev=%p\n", __FILE__, __LINE__, rtas.dev);
|
|
|
+ /* initialize the syscall map in systemcfg */
|
|
|
+ setup_syscall_map();
|
|
|
+
|
|
|
+ ppc_md.setup_arch();
|
|
|
+
|
|
|
+ /* Use the default idle loop if the platform hasn't provided one. */
|
|
|
+ if (NULL == ppc_md.idle_loop) {
|
|
|
+ ppc_md.idle_loop = default_idle;
|
|
|
+ printk(KERN_INFO "Using default idle loop\n");
|
|
|
+ }
|
|
|
+
|
|
|
+ paging_init();
|
|
|
+ ppc64_boot_msg(0x15, "Setup Done");
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+/* ToDo: do something useful if ppc_md is not yet setup. */
|
|
|
+#define PPC64_LINUX_FUNCTION 0x0f000000
|
|
|
+#define PPC64_IPL_MESSAGE 0xc0000000
|
|
|
+#define PPC64_TERM_MESSAGE 0xb0000000
|
|
|
+
|
|
|
+static void ppc64_do_msg(unsigned int src, const char *msg)
|
|
|
+{
|
|
|
+ if (ppc_md.progress) {
|
|
|
+ char buf[128];
|
|
|
+
|
|
|
+ sprintf(buf, "%08X\n", src);
|
|
|
+ ppc_md.progress(buf, 0);
|
|
|
+ snprintf(buf, 128, "%s", msg);
|
|
|
+ ppc_md.progress(buf, 0);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/* Print a boot progress message. */
|
|
|
+void ppc64_boot_msg(unsigned int src, const char *msg)
|
|
|
+{
|
|
|
+ ppc64_do_msg(PPC64_LINUX_FUNCTION|PPC64_IPL_MESSAGE|src, msg);
|
|
|
+ printk("[boot]%04x %s\n", src, msg);
|
|
|
+}
|
|
|
+
|
|
|
+/* Print a termination message (print only -- does not stop the kernel) */
|
|
|
+void ppc64_terminate_msg(unsigned int src, const char *msg)
|
|
|
+{
|
|
|
+ ppc64_do_msg(PPC64_LINUX_FUNCTION|PPC64_TERM_MESSAGE|src, msg);
|
|
|
+ printk("[terminate]%04x %s\n", src, msg);
|
|
|
+}
|
|
|
+
|
|
|
+/* This should only be called on processor 0 during calibrate decr */
|
|
|
+void __init setup_default_decr(void)
|
|
|
+{
|
|
|
+ struct paca_struct *lpaca = get_paca();
|
|
|
+
|
|
|
+ lpaca->default_decr = tb_ticks_per_jiffy;
|
|
|
+ lpaca->next_jiffy_update_tb = get_tb() + tb_ticks_per_jiffy;
|
|
|
+}
|
|
|
+
|
|
|
+#ifndef CONFIG_PPC_ISERIES
|
|
|
+/*
|
|
|
+ * This function can be used by platforms to "find" legacy serial ports.
|
|
|
+ * It works for "serial" nodes under an "isa" node, and will try to
|
|
|
+ * respect the "ibm,aix-loc" property if any. It works with up to 8
|
|
|
+ * ports.
|
|
|
+ */
|
|
|
+
|
|
|
+#define MAX_LEGACY_SERIAL_PORTS 8
|
|
|
+static struct plat_serial8250_port serial_ports[MAX_LEGACY_SERIAL_PORTS+1];
|
|
|
+static unsigned int old_serial_count;
|
|
|
+
|
|
|
+void __init generic_find_legacy_serial_ports(u64 *physport,
|
|
|
+ unsigned int *default_speed)
|
|
|
+{
|
|
|
+ struct device_node *np;
|
|
|
+ u32 *sizeprop;
|
|
|
+
|
|
|
+ struct isa_reg_property {
|
|
|
+ u32 space;
|
|
|
+ u32 address;
|
|
|
+ u32 size;
|
|
|
+ };
|
|
|
+ struct pci_reg_property {
|
|
|
+ struct pci_address addr;
|
|
|
+ u32 size_hi;
|
|
|
+ u32 size_lo;
|
|
|
+ };
|
|
|
+
|
|
|
+ DBG(" -> generic_find_legacy_serial_port()\n");
|
|
|
+
|
|
|
+ *physport = 0;
|
|
|
+ if (default_speed)
|
|
|
+ *default_speed = 0;
|
|
|
+
|
|
|
+ np = of_find_node_by_path("/");
|
|
|
+ if (!np)
|
|
|
+ return;
|
|
|
+
|
|
|
+ /* First fill our array */
|
|
|
+ for (np = NULL; (np = of_find_node_by_type(np, "serial"));) {
|
|
|
+ struct device_node *isa, *pci;
|
|
|
+ struct isa_reg_property *reg;
|
|
|
+ unsigned long phys_size, addr_size, io_base;
|
|
|
+ u32 *rangesp;
|
|
|
+ u32 *interrupts, *clk, *spd;
|
|
|
+ char *typep;
|
|
|
+ int index, rlen, rentsize;
|
|
|
+
|
|
|
+ /* Ok, first check if it's under an "isa" parent */
|
|
|
+ isa = of_get_parent(np);
|
|
|
+ if (!isa || strcmp(isa->name, "isa")) {
|
|
|
+ DBG("%s: no isa parent found\n", np->full_name);
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+
|
|
|
+ /* Now look for an "ibm,aix-loc" property that gives us ordering
|
|
|
+ * if any...
|
|
|
+ */
|
|
|
+ typep = (char *)get_property(np, "ibm,aix-loc", NULL);
|
|
|
+
|
|
|
+ /* Get the ISA port number */
|
|
|
+ reg = (struct isa_reg_property *)get_property(np, "reg", NULL);
|
|
|
+ if (reg == NULL)
|
|
|
+ goto next_port;
|
|
|
+ /* We assume the interrupt number isn't translated ... */
|
|
|
+ interrupts = (u32 *)get_property(np, "interrupts", NULL);
|
|
|
+ /* get clock freq. if present */
|
|
|
+ clk = (u32 *)get_property(np, "clock-frequency", NULL);
|
|
|
+ /* get default speed if present */
|
|
|
+ spd = (u32 *)get_property(np, "current-speed", NULL);
|
|
|
+ /* Default to locate at end of array */
|
|
|
+ index = old_serial_count; /* end of the array by default */
|
|
|
+
|
|
|
+ /* If we have a location index, then use it */
|
|
|
+ if (typep && *typep == 'S') {
|
|
|
+ index = simple_strtol(typep+1, NULL, 0) - 1;
|
|
|
+ /* if index is out of range, use end of array instead */
|
|
|
+ if (index >= MAX_LEGACY_SERIAL_PORTS)
|
|
|
+ index = old_serial_count;
|
|
|
+ /* if our index is still out of range, that mean that
|
|
|
+ * array is full, we could scan for a free slot but that
|
|
|
+ * make little sense to bother, just skip the port
|
|
|
+ */
|
|
|
+ if (index >= MAX_LEGACY_SERIAL_PORTS)
|
|
|
+ goto next_port;
|
|
|
+ if (index >= old_serial_count)
|
|
|
+ old_serial_count = index + 1;
|
|
|
+ /* Check if there is a port who already claimed our slot */
|
|
|
+ if (serial_ports[index].iobase != 0) {
|
|
|
+ /* if we still have some room, move it, else override */
|
|
|
+ if (old_serial_count < MAX_LEGACY_SERIAL_PORTS) {
|
|
|
+ DBG("Moved legacy port %d -> %d\n", index,
|
|
|
+ old_serial_count);
|
|
|
+ serial_ports[old_serial_count++] =
|
|
|
+ serial_ports[index];
|
|
|
+ } else {
|
|
|
+ DBG("Replacing legacy port %d\n", index);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (index >= MAX_LEGACY_SERIAL_PORTS)
|
|
|
+ goto next_port;
|
|
|
+ if (index >= old_serial_count)
|
|
|
+ old_serial_count = index + 1;
|
|
|
+
|
|
|
+ /* Now fill the entry */
|
|
|
+ memset(&serial_ports[index], 0, sizeof(struct plat_serial8250_port));
|
|
|
+ serial_ports[index].uartclk = clk ? *clk : BASE_BAUD * 16;
|
|
|
+ serial_ports[index].iobase = reg->address;
|
|
|
+ serial_ports[index].irq = interrupts ? interrupts[0] : 0;
|
|
|
+ serial_ports[index].flags = ASYNC_BOOT_AUTOCONF;
|
|
|
+
|
|
|
+ DBG("Added legacy port, index: %d, port: %x, irq: %d, clk: %d\n",
|
|
|
+ index,
|
|
|
+ serial_ports[index].iobase,
|
|
|
+ serial_ports[index].irq,
|
|
|
+ serial_ports[index].uartclk);
|
|
|
+
|
|
|
+ /* Get phys address of IO reg for port 1 */
|
|
|
+ if (index != 0)
|
|
|
+ goto next_port;
|
|
|
+
|
|
|
+ pci = of_get_parent(isa);
|
|
|
+ if (!pci) {
|
|
|
+ DBG("%s: no pci parent found\n", np->full_name);
|
|
|
+ goto next_port;
|
|
|
+ }
|
|
|
+
|
|
|
+ rangesp = (u32 *)get_property(pci, "ranges", &rlen);
|
|
|
+ if (rangesp == NULL) {
|
|
|
+ of_node_put(pci);
|
|
|
+ goto next_port;
|
|
|
+ }
|
|
|
+ rlen /= 4;
|
|
|
+
|
|
|
+ /* we need the #size-cells of the PCI bridge node itself */
|
|
|
+ phys_size = 1;
|
|
|
+ sizeprop = (u32 *)get_property(pci, "#size-cells", NULL);
|
|
|
+ if (sizeprop != NULL)
|
|
|
+ phys_size = *sizeprop;
|
|
|
+ /* we need the parent #addr-cells */
|
|
|
+ addr_size = prom_n_addr_cells(pci);
|
|
|
+ rentsize = 3 + addr_size + phys_size;
|
|
|
+ io_base = 0;
|
|
|
+ for (;rlen >= rentsize; rlen -= rentsize,rangesp += rentsize) {
|
|
|
+ if (((rangesp[0] >> 24) & 0x3) != 1)
|
|
|
+ continue; /* not IO space */
|
|
|
+ io_base = rangesp[3];
|
|
|
+ if (addr_size == 2)
|
|
|
+ io_base = (io_base << 32) | rangesp[4];
|
|
|
+ }
|
|
|
+ if (io_base != 0) {
|
|
|
+ *physport = io_base + reg->address;
|
|
|
+ if (default_speed && spd)
|
|
|
+ *default_speed = *spd;
|
|
|
+ }
|
|
|
+ of_node_put(pci);
|
|
|
+ next_port:
|
|
|
+ of_node_put(isa);
|
|
|
+ }
|
|
|
+
|
|
|
+ DBG(" <- generic_find_legacy_serial_port()\n");
|
|
|
+}
|
|
|
+
|
|
|
+static struct platform_device serial_device = {
|
|
|
+ .name = "serial8250",
|
|
|
+ .id = PLAT8250_DEV_PLATFORM,
|
|
|
+ .dev = {
|
|
|
+ .platform_data = serial_ports,
|
|
|
+ },
|
|
|
+};
|
|
|
+
|
|
|
+static int __init serial_dev_init(void)
|
|
|
+{
|
|
|
+ return platform_device_register(&serial_device);
|
|
|
+}
|
|
|
+arch_initcall(serial_dev_init);
|
|
|
+
|
|
|
+#endif /* CONFIG_PPC_ISERIES */
|
|
|
+
|
|
|
+int check_legacy_ioport(unsigned long base_port)
|
|
|
+{
|
|
|
+ if (ppc_md.check_legacy_ioport == NULL)
|
|
|
+ return 0;
|
|
|
+ return ppc_md.check_legacy_ioport(base_port);
|
|
|
+}
|
|
|
+EXPORT_SYMBOL(check_legacy_ioport);
|
|
|
+
|
|
|
+#ifdef CONFIG_XMON
|
|
|
+static int __init early_xmon(char *p)
|
|
|
+{
|
|
|
+ /* ensure xmon is enabled */
|
|
|
+ if (p) {
|
|
|
+ if (strncmp(p, "on", 2) == 0)
|
|
|
+ xmon_init(1);
|
|
|
+ if (strncmp(p, "off", 3) == 0)
|
|
|
+ xmon_init(0);
|
|
|
+ if (strncmp(p, "early", 5) != 0)
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ xmon_init(1);
|
|
|
+ debugger(NULL);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+early_param("xmon", early_xmon);
|
|
|
+#endif
|
|
|
+
|
|
|
+void cpu_die(void)
|
|
|
+{
|
|
|
+ if (ppc_md.cpu_die)
|
|
|
+ ppc_md.cpu_die();
|
|
|
+}
|
Paul Mackerras