+++ /dev/null
-/*
- * Common prep boot and setup code.
- */
-
-#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/screen_info.h>
-#include <linux/bootmem.h>
-#include <linux/seq_file.h>
-#include <linux/root_dev.h>
-#include <linux/cpu.h>
-#include <linux/console.h>
-
-#include <asm/residual.h>
-#include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/processor.h>
-#include <asm/pgtable.h>
-#include <asm/bootinfo.h>
-#include <asm/setup.h>
-#include <asm/smp.h>
-#include <asm/elf.h>
-#include <asm/cputable.h>
-#include <asm/bootx.h>
-#include <asm/btext.h>
-#include <asm/machdep.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/sections.h>
-#include <asm/nvram.h>
-#include <asm/xmon.h>
-#include <asm/ocp.h>
-#include <asm/irq.h>
-
-#define USES_PPC_SYS (defined(CONFIG_MPC10X_BRIDGE) || defined(CONFIG_8260) || \
- defined(CONFIG_PPC_MPC52xx))
-
-#if USES_PPC_SYS
-#include <asm/ppc_sys.h>
-#endif
-
-#if defined CONFIG_KGDB
-#include <asm/kgdb.h>
-#endif
-
-extern void platform_init(unsigned long r3, unsigned long r4,
- unsigned long r5, unsigned long r6, unsigned long r7);
-extern void reloc_got2(unsigned long offset);
-
-extern void ppc6xx_idle(void);
-extern void power4_idle(void);
-
-extern boot_infos_t *boot_infos;
-
-/* Used with the BI_MEMSIZE bootinfo parameter to store the memory
- size value reported by the boot loader. */
-unsigned long boot_mem_size;
-
-unsigned long ISA_DMA_THRESHOLD;
-unsigned int DMA_MODE_READ;
-unsigned int DMA_MODE_WRITE;
-
-#ifdef CONFIG_PPC_PREP
-extern void prep_init(unsigned long r3, unsigned long r4,
- unsigned long r5, unsigned long r6, unsigned long r7);
-
-dev_t boot_dev;
-#endif /* CONFIG_PPC_PREP */
-
-int have_of;
-EXPORT_SYMBOL(have_of);
-
-#ifdef __DO_IRQ_CANON
-int ppc_do_canonicalize_irqs;
-EXPORT_SYMBOL(ppc_do_canonicalize_irqs);
-#endif
-
-#ifdef CONFIG_VGA_CONSOLE
-unsigned long vgacon_remap_base;
-#endif
-
-struct machdep_calls ppc_md;
-
-/*
- * 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;
-
-#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_FB_VGA16) || \
- defined(CONFIG_FB_VGA16_MODULE) || defined(CONFIG_FB_VESA)
-struct screen_info screen_info = {
- 0, 25, /* orig-x, orig-y */
- 0, /* unused */
- 0, /* orig-video-page */
- 0, /* orig-video-mode */
- 80, /* orig-video-cols */
- 0,0,0, /* ega_ax, ega_bx, ega_cx */
- 25, /* orig-video-lines */
- 1, /* orig-video-isVGA */
- 16 /* orig-video-points */
-};
-#endif /* CONFIG_VGA_CONSOLE || CONFIG_FB_VGA16 || CONFIG_FB_VESA */
-
-void machine_restart(char *cmd)
-{
-#ifdef CONFIG_NVRAM
- nvram_sync();
-#endif
- ppc_md.restart(cmd);
-}
-
-static void ppc_generic_power_off(void)
-{
- ppc_md.power_off();
-}
-
-void machine_halt(void)
-{
-#ifdef CONFIG_NVRAM
- nvram_sync();
-#endif
- ppc_md.halt();
-}
-
-void (*pm_power_off)(void) = ppc_generic_power_off;
-
-void machine_power_off(void)
-{
-#ifdef CONFIG_NVRAM
- nvram_sync();
-#endif
- if (pm_power_off)
- pm_power_off();
- ppc_generic_power_off();
-}
-
-#ifdef CONFIG_TAU
-extern u32 cpu_temp(unsigned long cpu);
-extern u32 cpu_temp_both(unsigned long cpu);
-#endif /* CONFIG_TAU */
-
-int show_cpuinfo(struct seq_file *m, void *v)
-{
- int i = (int) v - 1;
- int err = 0;
- unsigned int pvr;
- unsigned short maj, min;
- unsigned long lpj;
-
- if (i >= NR_CPUS) {
- /* Show summary information */
-#ifdef CONFIG_SMP
- unsigned long bogosum = 0;
- for_each_online_cpu(i)
- bogosum += cpu_data[i].loops_per_jiffy;
- seq_printf(m, "total bogomips\t: %lu.%02lu\n",
- bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
-#endif /* CONFIG_SMP */
-
- if (ppc_md.show_cpuinfo != NULL)
- err = ppc_md.show_cpuinfo(m);
- return err;
- }
-
-#ifdef CONFIG_SMP
- if (!cpu_online(i))
- return 0;
- pvr = cpu_data[i].pvr;
- lpj = cpu_data[i].loops_per_jiffy;
-#else
- pvr = mfspr(SPRN_PVR);
- lpj = loops_per_jiffy;
-#endif
-
- seq_printf(m, "processor\t: %d\n", i);
- 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 (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
- seq_printf(m, ", altivec supported");
-#endif
- seq_printf(m, "\n");
-
-#ifdef CONFIG_TAU
- if (cur_cpu_spec->cpu_features & CPU_FTR_TAU) {
-#ifdef CONFIG_TAU_AVERAGE
- /* more straightforward, but potentially misleading */
- seq_printf(m, "temperature \t: %u C (uncalibrated)\n",
- cpu_temp(i));
-#else
- /* show the actual temp sensor range */
- u32 temp;
- temp = cpu_temp_both(i);
- seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
- temp & 0xff, temp >> 16);
-#endif
- }
-#endif /* CONFIG_TAU */
-
- if (ppc_md.show_percpuinfo != NULL) {
- err = ppc_md.show_percpuinfo(m, i);
- if (err)
- return err;
- }
-
- /* If we are a Freescale core do a simple check so
- * we dont have to keep adding cases in the future */
- if ((PVR_VER(pvr) & 0x8000) == 0x8000) {
- maj = PVR_MAJ(pvr);
- min = PVR_MIN(pvr);
- } else {
- switch (PVR_VER(pvr)) {
- case 0x0020: /* 403 family */
- maj = PVR_MAJ(pvr) + 1;
- min = PVR_MIN(pvr);
- break;
- case 0x1008: /* 740P/750P ?? */
- maj = ((pvr >> 8) & 0xFF) - 1;
- min = pvr & 0xFF;
- break;
- default:
- maj = (pvr >> 8) & 0xFF;
- min = pvr & 0xFF;
- break;
- }
- }
-
- seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
- maj, min, PVR_VER(pvr), PVR_REV(pvr));
-
- seq_printf(m, "bogomips\t: %lu.%02lu\n",
- lpj / (500000/HZ), (lpj / (5000/HZ)) % 100);
-
-#if USES_PPC_SYS
- if (cur_ppc_sys_spec->ppc_sys_name)
- seq_printf(m, "chipset\t\t: %s\n",
- cur_ppc_sys_spec->ppc_sys_name);
-#endif
-
-#ifdef CONFIG_SMP
- seq_printf(m, "\n");
-#endif
-
- return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- int i = *pos;
-
- return i <= NR_CPUS? (void *) (i + 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)
-{
-}
-
-const struct seq_operations cpuinfo_op = {
- .start =c_start,
- .next = c_next,
- .stop = c_stop,
- .show = show_cpuinfo,
-};
-
-/*
- * We're called here very early in the boot. We determine the machine
- * type and call the appropriate low-level setup functions.
- * -- Cort <cort@fsmlabs.com>
- *
- * Note that the kernel may be running at an address which is different
- * from the address that it was linked at, so we must use RELOC/PTRRELOC
- * to access static data (including strings). -- paulus
- */
-__init
-unsigned long
-early_init(int r3, int r4, int r5)
-{
- unsigned long phys;
- unsigned long offset = reloc_offset();
- struct cpu_spec *spec;
-
- /* Default */
- phys = offset + KERNELBASE;
-
- /* First zero the BSS -- use memset, some arches don't have
- * caches on yet */
- memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
-
- /*
- * Identify the CPU type and fix up code sections
- * that depend on which cpu we have.
- */
-#if defined(CONFIG_440EP) && defined(CONFIG_PPC_FPU)
- /* We pass the virtual PVR here for 440EP as 440EP and 440GR have
- * identical PVRs and there is no reliable way to check for the FPU
- */
- spec = identify_cpu(offset, (mfspr(SPRN_PVR) | 0x8));
-#else
- spec = identify_cpu(offset, mfspr(SPRN_PVR));
-#endif
- do_feature_fixups(spec->cpu_features,
- PTRRELOC(&__start___ftr_fixup),
- PTRRELOC(&__stop___ftr_fixup));
-
- return phys;
-}
-
-#ifdef CONFIG_PPC_PREP
-/*
- * The PPC_PREP version of platform_init...
- */
-void __init
-platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
-{
-#ifdef CONFIG_BOOTX_TEXT
- if (boot_text_mapped) {
- btext_clearscreen();
- btext_welcome();
- }
-#endif
-
- parse_bootinfo(find_bootinfo());
-
- prep_init(r3, r4, r5, r6, r7);
-}
-#endif /* CONFIG_PPC_PREP */
-
-struct bi_record *find_bootinfo(void)
-{
- struct bi_record *rec;
-
- rec = (struct bi_record *)_ALIGN((ulong)__bss_start+(1<<20)-1,(1<<20));
- if ( rec->tag != BI_FIRST ) {
- /*
- * This 0x10000 offset is a terrible hack but it will go away when
- * we have the bootloader handle all the relocation and
- * prom calls -- Cort
- */
- rec = (struct bi_record *)_ALIGN((ulong)__bss_start+0x10000+(1<<20)-1,(1<<20));
- if ( rec->tag != BI_FIRST )
- return NULL;
- }
- return rec;
-}
-
-void parse_bootinfo(struct bi_record *rec)
-{
- if (rec == NULL || rec->tag != BI_FIRST)
- return;
- while (rec->tag != BI_LAST) {
- ulong *data = rec->data;
- switch (rec->tag) {
- case BI_CMD_LINE:
- strlcpy(cmd_line, (void *)data, sizeof(cmd_line));
- break;
-#ifdef CONFIG_BLK_DEV_INITRD
- case BI_INITRD:
- initrd_start = data[0] + KERNELBASE;
- initrd_end = data[0] + data[1] + KERNELBASE;
- break;
-#endif /* CONFIG_BLK_DEV_INITRD */
- case BI_MEMSIZE:
- boot_mem_size = data[0];
- break;
- }
- rec = (struct bi_record *)((ulong)rec + rec->size);
- }
-}
-
-/*
- * Find out what kind of machine we're on and save any data we need
- * from the early boot process (devtree is copied on pmac by prom_init()).
- * This is called very early on the boot process, after a minimal
- * MMU environment has been set up but before MMU_init is called.
- */
-void __init
-machine_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
-{
-#ifdef CONFIG_CMDLINE
- strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
-#endif /* CONFIG_CMDLINE */
-
-#ifdef CONFIG_6xx
- ppc_md.power_save = ppc6xx_idle;
-#endif
-
- platform_init(r3, r4, r5, r6, r7);
-
- if (ppc_md.progress)
- ppc_md.progress("id mach(): done", 0x200);
-}
-#ifdef CONFIG_BOOKE_WDT
-/* Checks wdt=x and wdt_period=xx command-line option */
-int __init early_parse_wdt(char *p)
-{
- if (p && strncmp(p, "0", 1) != 0)
- booke_wdt_enabled = 1;
-
- return 0;
-}
-early_param("wdt", early_parse_wdt);
-
-int __init early_parse_wdt_period (char *p)
-{
- if (p)
- booke_wdt_period = simple_strtoul(p, NULL, 0);
-
- return 0;
-}
-early_param("wdt_period", early_parse_wdt_period);
-#endif /* CONFIG_BOOKE_WDT */
-
-/* Checks "l2cr=xxxx" command-line option */
-int __init ppc_setup_l2cr(char *str)
-{
- if (cpu_has_feature(CPU_FTR_L2CR)) {
- unsigned long val = simple_strtoul(str, NULL, 0);
- printk(KERN_INFO "l2cr set to %lx\n", val);
- _set_L2CR(0); /* force invalidate by disable cache */
- _set_L2CR(val); /* and enable it */
- }
- return 1;
-}
-__setup("l2cr=", ppc_setup_l2cr);
-
-#ifdef CONFIG_GENERIC_NVRAM
-
-/* Generic nvram hooks used by drivers/char/gen_nvram.c */
-unsigned char nvram_read_byte(int addr)
-{
- if (ppc_md.nvram_read_val)
- return ppc_md.nvram_read_val(addr);
- return 0xff;
-}
-EXPORT_SYMBOL(nvram_read_byte);
-
-void nvram_write_byte(unsigned char val, int addr)
-{
- if (ppc_md.nvram_write_val)
- ppc_md.nvram_write_val(addr, val);
-}
-EXPORT_SYMBOL(nvram_write_byte);
-
-void nvram_sync(void)
-{
- if (ppc_md.nvram_sync)
- ppc_md.nvram_sync();
-}
-EXPORT_SYMBOL(nvram_sync);
-
-#endif /* CONFIG_NVRAM */
-
-static struct cpu cpu_devices[NR_CPUS];
-
-int __init ppc_init(void)
-{
- int i;
-
- /* clear the progress line */
- if ( ppc_md.progress ) ppc_md.progress(" ", 0xffff);
-
- /* register CPU devices */
- for_each_possible_cpu(i)
- register_cpu(&cpu_devices[i], i);
-
- /* call platform init */
- if (ppc_md.init != NULL) {
- ppc_md.init();
- }
- return 0;
-}
-
-arch_initcall(ppc_init);
-
-/* Warning, IO base is not yet inited */
-void __init setup_arch(char **cmdline_p)
-{
- extern char *klimit;
- extern void do_init_bootmem(void);
-
- /* so udelay does something sensible, assume <= 1000 bogomips */
- loops_per_jiffy = 500000000 / HZ;
-
- if (ppc_md.init_early)
- ppc_md.init_early();
-
-#ifdef CONFIG_XMON
- xmon_init(1);
- if (strstr(cmd_line, "xmon"))
- xmon(NULL);
-#endif /* CONFIG_XMON */
- if ( ppc_md.progress ) ppc_md.progress("setup_arch: enter", 0x3eab);
-
-#if defined(CONFIG_KGDB)
- if (ppc_md.kgdb_map_scc)
- ppc_md.kgdb_map_scc();
- set_debug_traps();
- if (strstr(cmd_line, "gdb")) {
- if (ppc_md.progress)
- ppc_md.progress("setup_arch: kgdb breakpoint", 0x4000);
- printk("kgdb breakpoint activated\n");
- breakpoint();
- }
-#endif
-
- /*
- * 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.
- */
- if (! cpu_has_feature(CPU_FTR_UNIFIED_ID_CACHE)) {
- dcache_bsize = cur_cpu_spec->dcache_bsize;
- icache_bsize = cur_cpu_spec->icache_bsize;
- ucache_bsize = 0;
- } else
- ucache_bsize = dcache_bsize = icache_bsize
- = cur_cpu_spec->dcache_bsize;
-
- /* reboot on panic */
- panic_timeout = 180;
-
- init_mm.start_code = PAGE_OFFSET;
- init_mm.end_code = (unsigned long) _etext;
- init_mm.end_data = (unsigned long) _edata;
- init_mm.brk = (unsigned long) klimit;
-
- /* Save unparsed command line copy for /proc/cmdline */
- strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
- *cmdline_p = cmd_line;
-
- parse_early_param();
-
- /* set up the bootmem stuff with available memory */
- do_init_bootmem();
- if ( ppc_md.progress ) ppc_md.progress("setup_arch: bootmem", 0x3eab);
-
-#ifdef CONFIG_PPC_OCP
- /* Initialize OCP device list */
- ocp_early_init();
- if ( ppc_md.progress ) ppc_md.progress("ocp: exit", 0x3eab);
-#endif
-
-#ifdef CONFIG_DUMMY_CONSOLE
- conswitchp = &dummy_con;
-#endif
-
- ppc_md.setup_arch();
- if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
-
- paging_init();
-}
git.openpandora.org / pandora-kernel.git / blobdiff