| /* |
| * Common prep/pmac/chrp boot and setup code. |
| */ |
| |
| #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/tty.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/amigappc.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/pmac_feature.h> |
| #include <asm/sections.h> |
| #include <asm/nvram.h> |
| #include <asm/xmon.h> |
| #include <asm/ocp.h> |
| |
| #define USES_PPC_SYS (defined(CONFIG_85xx) || defined(CONFIG_83xx) || \ |
| 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 bootx_init(unsigned long r4, unsigned long phys); |
| extern void identify_cpu(unsigned long offset, unsigned long cpu); |
| extern void do_cpu_ftr_fixups(unsigned long offset); |
| extern void reloc_got2(unsigned long offset); |
| |
| extern void ppc6xx_idle(void); |
| extern void power4_idle(void); |
| |
| extern boot_infos_t *boot_infos; |
| struct ide_machdep_calls ppc_ide_md; |
| |
| /* 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_MULTIPLATFORM |
| int _machine = 0; |
| EXPORT_SYMBOL(_machine); |
| |
| extern void prep_init(unsigned long r3, unsigned long r4, |
| unsigned long r5, unsigned long r6, unsigned long r7); |
| extern void pmac_init(unsigned long r3, unsigned long r4, |
| unsigned long r5, unsigned long r6, unsigned long r7); |
| extern void chrp_init(unsigned long r3, unsigned long r4, |
| unsigned long r5, unsigned long r6, unsigned long r7); |
| |
| dev_t boot_dev; |
| #endif /* CONFIG_PPC_MULTIPLATFORM */ |
| |
| 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_MAGIC_SYSRQ |
| unsigned long SYSRQ_KEY = 0x54; |
| #endif /* CONFIG_MAGIC_SYSRQ */ |
| |
| #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); |
| } |
| |
| void machine_power_off(void) |
| { |
| #ifdef CONFIG_NVRAM |
| nvram_sync(); |
| #endif |
| ppc_md.power_off(); |
| } |
| |
| void machine_halt(void) |
| { |
| #ifdef CONFIG_NVRAM |
| nvram_sync(); |
| #endif |
| ppc_md.halt(); |
| } |
| |
| void (*pm_power_off)(void) = machine_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 (i = 0; i < NR_CPUS; ++i) |
| if (cpu_online(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) |
| { |
| } |
| |
| 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(); |
| |
| /* 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. |
| */ |
| identify_cpu(offset, 0); |
| do_cpu_ftr_fixups(offset); |
| |
| #if defined(CONFIG_PPC_MULTIPLATFORM) |
| reloc_got2(offset); |
| |
| /* If we came here from BootX, clear the screen, |
| * set up some pointers and return. */ |
| if ((r3 == 0x426f6f58) && (r5 == 0)) |
| bootx_init(r4, phys); |
| |
| /* |
| * don't do anything on prep |
| * for now, don't use bootinfo because it breaks yaboot 0.5 |
| * and assume that if we didn't find a magic number, we have OF |
| */ |
| else if (*(unsigned long *)(0) != 0xdeadc0de) |
| phys = prom_init(r3, r4, (prom_entry)r5); |
| |
| reloc_got2(-offset); |
| #endif |
| |
| return phys; |
| } |
| |
| #ifdef CONFIG_PPC_OF |
| /* |
| * Assume here that all clock rates are the same in a |
| * smp system. -- Cort |
| */ |
| int |
| of_show_percpuinfo(struct seq_file *m, int i) |
| { |
| struct device_node *cpu_node; |
| u32 *fp; |
| int s; |
| |
| cpu_node = find_type_devices("cpu"); |
| if (!cpu_node) |
| return 0; |
| for (s = 0; s < i && cpu_node->next; s++) |
| cpu_node = cpu_node->next; |
| fp = (u32 *)get_property(cpu_node, "clock-frequency", NULL); |
| if (fp) |
| seq_printf(m, "clock\t\t: %dMHz\n", *fp / 1000000); |
| return 0; |
| } |
| |
| void __init |
| intuit_machine_type(void) |
| { |
| char *model; |
| struct device_node *root; |
| |
| /* ask the OF info if we're a chrp or pmac */ |
| root = find_path_device("/"); |
| if (root != 0) { |
| /* assume pmac unless proven to be chrp -- Cort */ |
| _machine = _MACH_Pmac; |
| model = get_property(root, "device_type", NULL); |
| if (model && !strncmp("chrp", model, 4)) |
| _machine = _MACH_chrp; |
| else { |
| model = get_property(root, "model", NULL); |
| if (model && !strncmp(model, "IBM", 3)) |
| _machine = _MACH_chrp; |
| } |
| } |
| } |
| #endif |
| |
| #ifdef CONFIG_PPC_MULTIPLATFORM |
| /* |
| * The PPC_MULTIPLATFORM 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()); |
| |
| /* if we didn't get any bootinfo telling us what we are... */ |
| if (_machine == 0) { |
| /* prep boot loader tells us if we're prep or not */ |
| if ( *(unsigned long *)(KERNELBASE) == (0xdeadc0de) ) |
| _machine = _MACH_prep; |
| } |
| |
| #ifdef CONFIG_PPC_PREP |
| /* not much more to do here, if prep */ |
| if (_machine == _MACH_prep) { |
| prep_init(r3, r4, r5, r6, r7); |
| return; |
| } |
| #endif |
| |
| have_of = 1; |
| |
| /* prom_init has already been called from __start */ |
| if (boot_infos) |
| relocate_nodes(); |
| |
| /* If we aren't PReP, we can find out if we're Pmac |
| * or CHRP with this. */ |
| if (_machine == 0) |
| intuit_machine_type(); |
| |
| /* finish_device_tree may need _machine defined. */ |
| finish_device_tree(); |
| |
| /* |
| * If we were booted via quik, r3 points to the physical |
| * address of the command-line parameters. |
| * If we were booted from an xcoff image (i.e. netbooted or |
| * booted from floppy), we get the command line from the |
| * bootargs property of the /chosen node. |
| * If an initial ramdisk is present, r3 and r4 |
| * are used for initrd_start and initrd_size, |
| * otherwise they contain 0xdeadbeef. |
| */ |
| if (r3 >= 0x4000 && r3 < 0x800000 && r4 == 0) { |
| strlcpy(cmd_line, (char *)r3 + KERNELBASE, |
| sizeof(cmd_line)); |
| } else if (boot_infos != 0) { |
| /* booted by BootX - check for ramdisk */ |
| if (boot_infos->kernelParamsOffset != 0) |
| strlcpy(cmd_line, (char *) boot_infos |
| + boot_infos->kernelParamsOffset, |
| sizeof(cmd_line)); |
| #ifdef CONFIG_BLK_DEV_INITRD |
| if (boot_infos->ramDisk) { |
| initrd_start = (unsigned long) boot_infos |
| + boot_infos->ramDisk; |
| initrd_end = initrd_start + boot_infos->ramDiskSize; |
| initrd_below_start_ok = 1; |
| } |
| #endif |
| } else { |
| struct device_node *chosen; |
| char *p; |
| |
| #ifdef CONFIG_BLK_DEV_INITRD |
| if (r3 && r4 && r4 != 0xdeadbeef) { |
| if (r3 < KERNELBASE) |
| r3 += KERNELBASE; |
| initrd_start = r3; |
| initrd_end = r3 + r4; |
| ROOT_DEV = Root_RAM0; |
| initrd_below_start_ok = 1; |
| } |
| #endif |
| chosen = find_devices("chosen"); |
| if (chosen != NULL) { |
| p = get_property(chosen, "bootargs", NULL); |
| if (p && *p) { |
| strlcpy(cmd_line, p, sizeof(cmd_line)); |
| } |
| } |
| } |
| #ifdef CONFIG_ADB |
| if (strstr(cmd_line, "adb_sync")) { |
| extern int __adb_probe_sync; |
| __adb_probe_sync = 1; |
| } |
| #endif /* CONFIG_ADB */ |
| |
| switch (_machine) { |
| #ifdef CONFIG_PPC_PMAC |
| case _MACH_Pmac: |
| pmac_init(r3, r4, r5, r6, r7); |
| break; |
| #endif |
| #ifdef CONFIG_PPC_CHRP |
| case _MACH_chrp: |
| chrp_init(r3, r4, r5, r6, r7); |
| break; |
| #endif |
| } |
| } |
| |
| #ifdef CONFIG_SERIAL_CORE_CONSOLE |
| extern char *of_stdout_device; |
| |
| static int __init set_preferred_console(void) |
| { |
| struct device_node *prom_stdout; |
| char *name; |
| int offset = 0; |
| |
| if (of_stdout_device == NULL) |
| return -ENODEV; |
| |
| /* The user has requested a console so this is already set up. */ |
| if (strstr(saved_command_line, "console=")) |
| return -EBUSY; |
| |
| prom_stdout = find_path_device(of_stdout_device); |
| if (!prom_stdout) |
| return -ENODEV; |
| |
| name = (char *)get_property(prom_stdout, "name", NULL); |
| if (!name) |
| return -ENODEV; |
| |
| 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 */ |
| return -ENODEV; |
| } |
| } |
| } else if (strcmp(name, "ch-a") == 0) |
| offset = 0; |
| else if (strcmp(name, "ch-b") == 0) |
| offset = 1; |
| else |
| return -ENODEV; |
| return add_preferred_console("ttyS", offset, NULL); |
| } |
| console_initcall(set_preferred_console); |
| #endif /* CONFIG_SERIAL_CORE_CONSOLE */ |
| #endif /* CONFIG_PPC_MULTIPLATFORM */ |
| |
| 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 */ |
| #ifdef CONFIG_PPC_MULTIPLATFORM |
| case BI_MACHTYPE: |
| /* Machine types changed with the merge. Since the |
| * bootinfo are now deprecated, we can just hard code |
| * the appropriate conversion here for when we are |
| * called with yaboot which passes us a machine type |
| * this way. |
| */ |
| switch(data[0]) { |
| case 1: _machine = _MACH_prep; break; |
| case 2: _machine = _MACH_Pmac; break; |
| case 4: _machine = _MACH_chrp; break; |
| default: |
| _machine = data[0]; |
| } |
| break; |
| #endif |
| 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 |
| #ifdef CONFIG_POWER4 |
| ppc_md.power_save = power4_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 (i = 0; i < NR_CPUS; i++) |
| if (cpu_possible(i)) |
| register_cpu(&cpu_devices[i], i, NULL); |
| |
| /* 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_PPC_MULTIPLATFORM |
| /* This could be called "early setup arch", it must be done |
| * now because xmon need it |
| */ |
| if (_machine == _MACH_Pmac) |
| pmac_feature_init(); /* New cool way */ |
| #endif |
| |
| #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_SPLIT_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(saved_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(); |
| |
| /* this is for modules since _machine can be a define -- Cort */ |
| ppc_md.ppc_machine = _machine; |
| } |