a2f40ccd29
PowerPC 40x and Book-E processors support a watchdog timer at the processor core level. The timer has implementation dependent timeout frequencies that can be configured by software. One the first Watchdog timeout we get a critical exception. It is left to board specific code to determine what should happen at this point. If nothing is done and another timeout period expires the processor may attempt to reset the machine. Command line parameters: wdt=0 : disable watchdog (default) wdt=1 : enable watchdog wdt_period=N : N sets the value of the Watchdog Timer Period. The Watchdog Timer Period meaning is implementation specific. Check User Manual for the processor for more details. This patch is based off of work done by Takeharu Kato. Signed-off-by: Matt McClintock <msm@freescale.com> Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
791 lines
18 KiB
C
791 lines
18 KiB
C
/*
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* Common prep/pmac/chrp boot and setup code.
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/sched.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/reboot.h>
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#include <linux/delay.h>
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#include <linux/initrd.h>
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#include <linux/ide.h>
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#include <linux/tty.h>
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#include <linux/bootmem.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/cpu.h>
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#include <linux/console.h>
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#include <asm/residual.h>
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#include <asm/io.h>
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#include <asm/prom.h>
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#include <asm/processor.h>
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#include <asm/pgtable.h>
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#include <asm/bootinfo.h>
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#include <asm/setup.h>
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#include <asm/amigappc.h>
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#include <asm/smp.h>
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#include <asm/elf.h>
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#include <asm/cputable.h>
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#include <asm/bootx.h>
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#include <asm/btext.h>
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#include <asm/machdep.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#include <asm/pmac_feature.h>
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#include <asm/sections.h>
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#include <asm/nvram.h>
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#include <asm/xmon.h>
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#include <asm/ocp.h>
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#if defined(CONFIG_85xx) || defined(CONFIG_83xx) || defined(CONFIG_MPC10X_BRIDGE)
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#include <asm/ppc_sys.h>
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#endif
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#if defined CONFIG_KGDB
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#include <asm/kgdb.h>
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#endif
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extern void platform_init(unsigned long r3, unsigned long r4,
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unsigned long r5, unsigned long r6, unsigned long r7);
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extern void bootx_init(unsigned long r4, unsigned long phys);
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extern void identify_cpu(unsigned long offset, unsigned long cpu);
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extern void do_cpu_ftr_fixups(unsigned long offset);
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extern void reloc_got2(unsigned long offset);
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extern void ppc6xx_idle(void);
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extern void power4_idle(void);
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extern boot_infos_t *boot_infos;
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struct ide_machdep_calls ppc_ide_md;
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/* Used with the BI_MEMSIZE bootinfo parameter to store the memory
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size value reported by the boot loader. */
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unsigned long boot_mem_size;
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unsigned long ISA_DMA_THRESHOLD;
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unsigned long DMA_MODE_READ, DMA_MODE_WRITE;
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#ifdef CONFIG_PPC_MULTIPLATFORM
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int _machine = 0;
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extern void prep_init(unsigned long r3, unsigned long r4,
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unsigned long r5, unsigned long r6, unsigned long r7);
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extern void pmac_init(unsigned long r3, unsigned long r4,
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unsigned long r5, unsigned long r6, unsigned long r7);
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extern void chrp_init(unsigned long r3, unsigned long r4,
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unsigned long r5, unsigned long r6, unsigned long r7);
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#endif /* CONFIG_PPC_MULTIPLATFORM */
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#ifdef CONFIG_MAGIC_SYSRQ
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unsigned long SYSRQ_KEY = 0x54;
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#endif /* CONFIG_MAGIC_SYSRQ */
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#ifdef CONFIG_VGA_CONSOLE
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unsigned long vgacon_remap_base;
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#endif
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struct machdep_calls ppc_md;
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/*
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* These are used in binfmt_elf.c to put aux entries on the stack
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* for each elf executable being started.
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*/
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int dcache_bsize;
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int icache_bsize;
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int ucache_bsize;
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#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_FB_VGA16) || \
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defined(CONFIG_FB_VGA16_MODULE) || defined(CONFIG_FB_VESA)
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struct screen_info screen_info = {
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0, 25, /* orig-x, orig-y */
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0, /* unused */
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0, /* orig-video-page */
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0, /* orig-video-mode */
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80, /* orig-video-cols */
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0,0,0, /* ega_ax, ega_bx, ega_cx */
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25, /* orig-video-lines */
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1, /* orig-video-isVGA */
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16 /* orig-video-points */
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};
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#endif /* CONFIG_VGA_CONSOLE || CONFIG_FB_VGA16 || CONFIG_FB_VESA */
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void machine_restart(char *cmd)
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{
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#ifdef CONFIG_NVRAM
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nvram_sync();
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#endif
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ppc_md.restart(cmd);
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}
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void machine_power_off(void)
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{
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#ifdef CONFIG_NVRAM
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nvram_sync();
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#endif
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ppc_md.power_off();
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}
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void machine_halt(void)
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{
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#ifdef CONFIG_NVRAM
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nvram_sync();
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#endif
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ppc_md.halt();
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}
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void (*pm_power_off)(void) = machine_power_off;
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#ifdef CONFIG_TAU
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extern u32 cpu_temp(unsigned long cpu);
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extern u32 cpu_temp_both(unsigned long cpu);
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#endif /* CONFIG_TAU */
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int show_cpuinfo(struct seq_file *m, void *v)
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{
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int i = (int) v - 1;
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int err = 0;
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unsigned int pvr;
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unsigned short maj, min;
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unsigned long lpj;
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if (i >= NR_CPUS) {
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/* Show summary information */
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#ifdef CONFIG_SMP
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unsigned long bogosum = 0;
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for (i = 0; i < NR_CPUS; ++i)
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if (cpu_online(i))
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bogosum += cpu_data[i].loops_per_jiffy;
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seq_printf(m, "total bogomips\t: %lu.%02lu\n",
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bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
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#endif /* CONFIG_SMP */
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if (ppc_md.show_cpuinfo != NULL)
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err = ppc_md.show_cpuinfo(m);
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return err;
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}
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#ifdef CONFIG_SMP
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if (!cpu_online(i))
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return 0;
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pvr = cpu_data[i].pvr;
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lpj = cpu_data[i].loops_per_jiffy;
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#else
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pvr = mfspr(SPRN_PVR);
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lpj = loops_per_jiffy;
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#endif
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seq_printf(m, "processor\t: %d\n", i);
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seq_printf(m, "cpu\t\t: ");
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if (cur_cpu_spec[i]->pvr_mask)
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seq_printf(m, "%s", cur_cpu_spec[i]->cpu_name);
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else
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seq_printf(m, "unknown (%08x)", pvr);
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#ifdef CONFIG_ALTIVEC
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if (cur_cpu_spec[i]->cpu_features & CPU_FTR_ALTIVEC)
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seq_printf(m, ", altivec supported");
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#endif
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seq_printf(m, "\n");
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#ifdef CONFIG_TAU
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if (cur_cpu_spec[i]->cpu_features & CPU_FTR_TAU) {
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#ifdef CONFIG_TAU_AVERAGE
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/* more straightforward, but potentially misleading */
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seq_printf(m, "temperature \t: %u C (uncalibrated)\n",
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cpu_temp(i));
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#else
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/* show the actual temp sensor range */
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u32 temp;
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temp = cpu_temp_both(i);
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seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
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temp & 0xff, temp >> 16);
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#endif
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}
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#endif /* CONFIG_TAU */
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if (ppc_md.show_percpuinfo != NULL) {
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err = ppc_md.show_percpuinfo(m, i);
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if (err)
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return err;
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}
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/* If we are a Freescale core do a simple check so
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* we dont have to keep adding cases in the future */
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if ((PVR_VER(pvr) & 0x8000) == 0x8000) {
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maj = PVR_MAJ(pvr);
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min = PVR_MIN(pvr);
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} else {
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switch (PVR_VER(pvr)) {
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case 0x0020: /* 403 family */
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maj = PVR_MAJ(pvr) + 1;
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min = PVR_MIN(pvr);
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break;
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case 0x1008: /* 740P/750P ?? */
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maj = ((pvr >> 8) & 0xFF) - 1;
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min = pvr & 0xFF;
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break;
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default:
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maj = (pvr >> 8) & 0xFF;
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min = pvr & 0xFF;
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break;
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}
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}
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seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
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maj, min, PVR_VER(pvr), PVR_REV(pvr));
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seq_printf(m, "bogomips\t: %lu.%02lu\n",
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lpj / (500000/HZ), (lpj / (5000/HZ)) % 100);
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#if defined(CONFIG_85xx) || defined(CONFIG_83xx) || defined(CONFIG_MPC10X_BRIDGE)
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if (cur_ppc_sys_spec->ppc_sys_name)
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seq_printf(m, "chipset\t\t: %s\n",
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cur_ppc_sys_spec->ppc_sys_name);
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#endif
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#ifdef CONFIG_SMP
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seq_printf(m, "\n");
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#endif
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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int i = *pos;
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return i <= NR_CPUS? (void *) (i + 1): NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return c_start(m, pos);
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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struct seq_operations cpuinfo_op = {
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.start =c_start,
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.next = c_next,
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.stop = c_stop,
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.show = show_cpuinfo,
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};
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/*
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* We're called here very early in the boot. We determine the machine
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* type and call the appropriate low-level setup functions.
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* -- Cort <cort@fsmlabs.com>
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*
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* Note that the kernel may be running at an address which is different
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* from the address that it was linked at, so we must use RELOC/PTRRELOC
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* to access static data (including strings). -- paulus
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*/
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__init
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unsigned long
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early_init(int r3, int r4, int r5)
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{
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unsigned long phys;
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unsigned long offset = reloc_offset();
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/* Default */
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phys = offset + KERNELBASE;
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/* First zero the BSS -- use memset, some arches don't have
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* caches on yet */
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memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
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/*
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* Identify the CPU type and fix up code sections
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* that depend on which cpu we have.
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*/
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identify_cpu(offset, 0);
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do_cpu_ftr_fixups(offset);
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#if defined(CONFIG_PPC_MULTIPLATFORM)
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reloc_got2(offset);
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/* If we came here from BootX, clear the screen,
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* set up some pointers and return. */
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if ((r3 == 0x426f6f58) && (r5 == 0))
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bootx_init(r4, phys);
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/*
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* don't do anything on prep
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* for now, don't use bootinfo because it breaks yaboot 0.5
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* and assume that if we didn't find a magic number, we have OF
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*/
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else if (*(unsigned long *)(0) != 0xdeadc0de)
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phys = prom_init(r3, r4, (prom_entry)r5);
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reloc_got2(-offset);
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#endif
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return phys;
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}
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#ifdef CONFIG_PPC_OF
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/*
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* Assume here that all clock rates are the same in a
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* smp system. -- Cort
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*/
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int __openfirmware
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of_show_percpuinfo(struct seq_file *m, int i)
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{
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struct device_node *cpu_node;
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u32 *fp;
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int s;
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cpu_node = find_type_devices("cpu");
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if (!cpu_node)
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return 0;
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for (s = 0; s < i && cpu_node->next; s++)
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cpu_node = cpu_node->next;
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fp = (u32 *)get_property(cpu_node, "clock-frequency", NULL);
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if (fp)
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seq_printf(m, "clock\t\t: %dMHz\n", *fp / 1000000);
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return 0;
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}
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void __init
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intuit_machine_type(void)
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{
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char *model;
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struct device_node *root;
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/* ask the OF info if we're a chrp or pmac */
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root = find_path_device("/");
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if (root != 0) {
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/* assume pmac unless proven to be chrp -- Cort */
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_machine = _MACH_Pmac;
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model = get_property(root, "device_type", NULL);
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if (model && !strncmp("chrp", model, 4))
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_machine = _MACH_chrp;
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else {
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model = get_property(root, "model", NULL);
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if (model && !strncmp(model, "IBM", 3))
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_machine = _MACH_chrp;
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}
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}
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}
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#endif
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#ifdef CONFIG_PPC_MULTIPLATFORM
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/*
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* The PPC_MULTIPLATFORM version of platform_init...
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*/
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void __init
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platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
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unsigned long r6, unsigned long r7)
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{
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#ifdef CONFIG_BOOTX_TEXT
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if (boot_text_mapped) {
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btext_clearscreen();
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btext_welcome();
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}
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#endif
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parse_bootinfo(find_bootinfo());
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/* if we didn't get any bootinfo telling us what we are... */
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if (_machine == 0) {
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/* prep boot loader tells us if we're prep or not */
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if ( *(unsigned long *)(KERNELBASE) == (0xdeadc0de) )
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_machine = _MACH_prep;
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}
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/* not much more to do here, if prep */
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if (_machine == _MACH_prep) {
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prep_init(r3, r4, r5, r6, r7);
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return;
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}
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/* prom_init has already been called from __start */
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if (boot_infos)
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relocate_nodes();
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/* If we aren't PReP, we can find out if we're Pmac
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* or CHRP with this. */
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if (_machine == 0)
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intuit_machine_type();
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/* finish_device_tree may need _machine defined. */
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finish_device_tree();
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/*
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* If we were booted via quik, r3 points to the physical
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* address of the command-line parameters.
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* If we were booted from an xcoff image (i.e. netbooted or
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* booted from floppy), we get the command line from the
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* bootargs property of the /chosen node.
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* If an initial ramdisk is present, r3 and r4
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* are used for initrd_start and initrd_size,
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* otherwise they contain 0xdeadbeef.
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*/
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if (r3 >= 0x4000 && r3 < 0x800000 && r4 == 0) {
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strlcpy(cmd_line, (char *)r3 + KERNELBASE,
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sizeof(cmd_line));
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} else if (boot_infos != 0) {
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/* booted by BootX - check for ramdisk */
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if (boot_infos->kernelParamsOffset != 0)
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strlcpy(cmd_line, (char *) boot_infos
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+ boot_infos->kernelParamsOffset,
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sizeof(cmd_line));
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#ifdef CONFIG_BLK_DEV_INITRD
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if (boot_infos->ramDisk) {
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initrd_start = (unsigned long) boot_infos
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+ boot_infos->ramDisk;
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initrd_end = initrd_start + boot_infos->ramDiskSize;
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initrd_below_start_ok = 1;
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}
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#endif
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} else {
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struct device_node *chosen;
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char *p;
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#ifdef CONFIG_BLK_DEV_INITRD
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if (r3 && r4 && r4 != 0xdeadbeef) {
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if (r3 < KERNELBASE)
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r3 += KERNELBASE;
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initrd_start = r3;
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initrd_end = r3 + r4;
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ROOT_DEV = Root_RAM0;
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initrd_below_start_ok = 1;
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}
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#endif
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chosen = find_devices("chosen");
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if (chosen != NULL) {
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p = get_property(chosen, "bootargs", NULL);
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if (p && *p) {
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strlcpy(cmd_line, p, sizeof(cmd_line));
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}
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}
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}
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#ifdef CONFIG_ADB
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if (strstr(cmd_line, "adb_sync")) {
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extern int __adb_probe_sync;
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__adb_probe_sync = 1;
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}
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#endif /* CONFIG_ADB */
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switch (_machine) {
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case _MACH_Pmac:
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pmac_init(r3, r4, r5, r6, r7);
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break;
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case _MACH_chrp:
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chrp_init(r3, r4, r5, r6, r7);
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break;
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}
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}
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#ifdef CONFIG_SERIAL_CORE_CONSOLE
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extern char *of_stdout_device;
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static int __init set_preferred_console(void)
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{
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struct device_node *prom_stdout;
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char *name;
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int offset = 0;
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if (of_stdout_device == NULL)
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return -ENODEV;
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/* The user has requested a console so this is already set up. */
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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 = 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)
|
|
{
|
|
extern u32 wdt_enable;
|
|
|
|
if (p && strncmp(p, "0", 1) != 0)
|
|
wdt_enable = 1;
|
|
|
|
return 0;
|
|
}
|
|
early_param("wdt", early_parse_wdt);
|
|
|
|
int __init early_parse_wdt_period (char *p)
|
|
{
|
|
extern u32 wdt_period;
|
|
|
|
if (p)
|
|
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;
|
|
|
|
#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_map_scc();
|
|
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[0]->dcache_bsize;
|
|
icache_bsize = cur_cpu_spec[0]->icache_bsize;
|
|
ucache_bsize = 0;
|
|
} else
|
|
ucache_bsize = dcache_bsize = icache_bsize
|
|
= cur_cpu_spec[0]->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;
|
|
}
|