2006-10-02 22:14:04 -06:00
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/*
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2006-12-24 18:19:56 -07:00
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* arch/sh/kernel/setup.c
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2005-04-16 16:20:36 -06:00
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*
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* This file handles the architecture-dependent parts of initialization
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2006-12-24 18:19:56 -07:00
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*
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* Copyright (C) 1999 Niibe Yutaka
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2010-05-10 00:39:05 -06:00
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* Copyright (C) 2002 - 2010 Paul Mundt
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2005-04-16 16:20:36 -06:00
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*/
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2006-07-10 05:44:13 -06:00
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#include <linux/screen_info.h>
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2005-04-16 16:20:36 -06:00
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/initrd.h>
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#include <linux/bootmem.h>
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#include <linux/console.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/utsname.h>
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2007-03-28 01:38:13 -06:00
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#include <linux/nodemask.h>
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2005-04-16 16:20:36 -06:00
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#include <linux/cpu.h>
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2006-03-27 02:16:04 -07:00
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#include <linux/pfn.h>
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2006-10-02 22:14:04 -06:00
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#include <linux/fs.h>
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2007-03-28 01:38:13 -06:00
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#include <linux/mm.h>
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2007-04-26 20:25:57 -06:00
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#include <linux/kexec.h>
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2007-07-20 01:59:49 -06:00
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#include <linux/module.h>
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2007-09-21 03:39:49 -06:00
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#include <linux/smp.h>
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2008-03-07 01:19:58 -07:00
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#include <linux/err.h>
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#include <linux/debugfs.h>
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2008-07-29 18:29:39 -06:00
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#include <linux/crash_dump.h>
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2008-09-04 03:53:58 -06:00
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#include <linux/mmzone.h>
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2008-09-08 05:47:42 -06:00
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#include <linux/clk.h>
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#include <linux/delay.h>
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2009-04-15 04:50:21 -06:00
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#include <linux/platform_device.h>
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2009-07-03 01:16:54 -06:00
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#include <linux/lmb.h>
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2005-04-16 16:20:36 -06:00
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#include <asm/uaccess.h>
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#include <asm/io.h>
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2007-05-13 21:50:43 -06:00
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#include <asm/page.h>
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2007-12-09 23:50:28 -07:00
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#include <asm/elf.h>
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2005-04-16 16:20:36 -06:00
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#include <asm/sections.h>
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#include <asm/irq.h>
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#include <asm/setup.h>
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2006-02-01 04:06:02 -07:00
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#include <asm/clock.h>
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2010-04-26 03:35:44 -06:00
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#include <asm/smp.h>
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2007-03-28 01:38:13 -06:00
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#include <asm/mmu_context.h>
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2010-05-10 00:39:05 -06:00
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#include <asm/mmzone.h>
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2005-04-16 16:20:36 -06:00
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/*
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* Initialize loops_per_jiffy as 10000000 (1000MIPS).
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* This value will be used at the very early stage of serial setup.
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* The bigger value means no problem.
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*/
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2007-09-21 03:01:40 -06:00
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struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
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[0] = {
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.type = CPU_SH_NONE,
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2009-08-14 19:48:13 -06:00
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.family = CPU_FAMILY_UNKNOWN,
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2007-09-21 03:01:40 -06:00
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.loops_per_jiffy = 10000000,
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},
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};
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EXPORT_SYMBOL(cpu_data);
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2007-05-15 00:19:34 -06:00
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/*
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* The machine vector. First entry in .machvec.init, or clobbered by
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* sh_mv= on the command line, prior to .machvec.init teardown.
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*/
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2007-05-15 00:38:30 -06:00
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struct sh_machine_vector sh_mv = { .mv_name = "generic", };
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2008-04-25 01:01:38 -06:00
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EXPORT_SYMBOL(sh_mv);
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2007-05-15 00:19:34 -06:00
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2006-09-27 03:17:31 -06:00
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#ifdef CONFIG_VT
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2005-04-16 16:20:36 -06:00
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struct screen_info screen_info;
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2006-09-27 03:17:31 -06:00
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#endif
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2005-04-16 16:20:36 -06:00
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extern int root_mountflags;
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2005-11-07 01:58:24 -07:00
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#define RAMDISK_IMAGE_START_MASK 0x07FF
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2005-04-16 16:20:36 -06:00
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#define RAMDISK_PROMPT_FLAG 0x8000
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2005-11-07 01:58:24 -07:00
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#define RAMDISK_LOAD_FLAG 0x4000
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2005-04-16 16:20:36 -06:00
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2007-02-12 01:54:19 -07:00
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static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
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2005-04-16 16:20:36 -06:00
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2007-10-30 02:32:08 -06:00
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static struct resource code_resource = {
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.name = "Kernel code",
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.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
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};
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static struct resource data_resource = {
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.name = "Kernel data",
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.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
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};
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2005-04-16 16:20:36 -06:00
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2008-04-23 05:50:27 -06:00
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static struct resource bss_resource = {
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.name = "Kernel bss",
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.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
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};
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2007-07-20 01:59:49 -06:00
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unsigned long memory_start;
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EXPORT_SYMBOL(memory_start);
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2007-10-30 02:18:08 -06:00
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unsigned long memory_end = 0;
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2007-07-20 01:59:49 -06:00
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EXPORT_SYMBOL(memory_end);
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2010-05-10 05:17:25 -06:00
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unsigned long memory_limit = 0;
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2005-04-16 16:20:36 -06:00
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2008-04-23 05:56:44 -06:00
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static struct resource mem_resources[MAX_NUMNODES];
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2007-12-09 23:50:28 -07:00
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int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;
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2007-05-14 00:59:09 -06:00
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static int __init early_parse_mem(char *p)
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2005-04-16 16:20:36 -06:00
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{
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2010-05-10 05:17:25 -06:00
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if (!p)
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return 1;
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2005-04-16 16:20:36 -06:00
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2010-05-10 05:17:25 -06:00
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memory_limit = PAGE_ALIGN(memparse(p, &p));
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2007-11-26 05:16:09 -07:00
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2010-05-10 05:17:25 -06:00
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pr_notice("Memory limited to %ldMB\n", memory_limit >> 20);
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2006-09-27 03:17:31 -06:00
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2005-04-16 16:20:36 -06:00
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return 0;
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}
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2007-05-14 00:59:09 -06:00
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early_param("mem", early_parse_mem);
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2005-04-16 16:20:36 -06:00
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2007-03-28 01:38:13 -06:00
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/*
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* Register fully available low RAM pages with the bootmem allocator.
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*/
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static void __init register_bootmem_low_pages(void)
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2005-04-16 16:20:36 -06:00
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{
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2007-03-28 01:38:13 -06:00
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unsigned long curr_pfn, last_pfn, pages;
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2006-12-11 17:00:47 -07:00
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2005-04-16 16:20:36 -06:00
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/*
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2007-03-28 01:38:13 -06:00
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* We are rounding up the start address of usable memory:
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2005-04-16 16:20:36 -06:00
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*/
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2007-03-28 01:38:13 -06:00
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curr_pfn = PFN_UP(__MEMORY_START);
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2005-04-16 16:20:36 -06:00
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/*
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2007-03-28 01:38:13 -06:00
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* ... and at the end of the usable range downwards:
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2005-04-16 16:20:36 -06:00
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*/
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2007-03-28 01:38:13 -06:00
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last_pfn = PFN_DOWN(__pa(memory_end));
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2005-04-16 16:20:36 -06:00
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2007-03-28 01:38:13 -06:00
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if (last_pfn > max_low_pfn)
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last_pfn = max_low_pfn;
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pages = last_pfn - curr_pfn;
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free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
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}
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2010-05-06 00:09:45 -06:00
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static void __init check_for_initrd(void)
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{
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#ifdef CONFIG_BLK_DEV_INITRD
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unsigned long start, end;
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/*
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* Check for the rare cases where boot loaders adhere to the boot
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* ABI.
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*/
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if (!LOADER_TYPE || !INITRD_START || !INITRD_SIZE)
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goto disable;
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start = INITRD_START + __MEMORY_START;
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end = start + INITRD_SIZE;
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if (unlikely(end <= start))
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goto disable;
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if (unlikely(start & ~PAGE_MASK)) {
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pr_err("initrd must be page aligned\n");
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goto disable;
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}
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if (unlikely(start < PAGE_OFFSET)) {
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pr_err("initrd start < PAGE_OFFSET\n");
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goto disable;
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}
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if (unlikely(end > lmb_end_of_DRAM())) {
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pr_err("initrd extends beyond end of memory "
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"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
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end, (unsigned long)lmb_end_of_DRAM());
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goto disable;
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}
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/*
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* If we got this far inspite of the boot loader's best efforts
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* to the contrary, assume we actually have a valid initrd and
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* fix up the root dev.
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*/
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ROOT_DEV = Root_RAM0;
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/*
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* Address sanitization
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*/
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initrd_start = (unsigned long)__va(__pa(start));
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initrd_end = initrd_start + INITRD_SIZE;
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2010-05-07 00:10:07 -06:00
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lmb_reserve(__pa(initrd_start), INITRD_SIZE);
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2010-05-06 00:09:45 -06:00
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return;
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disable:
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pr_info("initrd disabled\n");
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initrd_start = initrd_end = 0;
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#endif
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}
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2008-09-08 05:47:42 -06:00
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void __cpuinit calibrate_delay(void)
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{
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struct clk *clk = clk_get(NULL, "cpu_clk");
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if (IS_ERR(clk))
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panic("Need a sane CPU clock definition!");
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loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ;
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printk(KERN_INFO "Calibrating delay loop (skipped)... "
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"%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n",
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loops_per_jiffy/(500000/HZ),
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(loops_per_jiffy/(5000/HZ)) % 100,
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loops_per_jiffy);
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}
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2008-04-23 05:56:44 -06:00
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void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
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unsigned long end_pfn)
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{
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struct resource *res = &mem_resources[nid];
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WARN_ON(res->name); /* max one active range per node for now */
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res->name = "System RAM";
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res->start = start_pfn << PAGE_SHIFT;
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res->end = (end_pfn << PAGE_SHIFT) - 1;
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res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
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if (request_resource(&iomem_resource, res)) {
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pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
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start_pfn, end_pfn);
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return;
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}
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/*
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* We don't know which RAM region contains kernel data,
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* so we try it repeatedly and let the resource manager
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* test it.
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*/
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request_resource(res, &code_resource);
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request_resource(res, &data_resource);
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request_resource(res, &bss_resource);
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add_active_range(nid, start_pfn, end_pfn);
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}
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2010-05-10 00:39:05 -06:00
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void __init do_init_bootmem(void)
|
2007-03-28 01:38:13 -06:00
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{
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unsigned long bootmap_size;
|
2009-07-03 01:16:54 -06:00
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unsigned long bootmap_pages, bootmem_paddr;
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2010-05-10 05:17:25 -06:00
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u64 total_pages = lmb_phys_mem_size() >> PAGE_SHIFT;
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2009-07-03 01:16:54 -06:00
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int i;
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bootmap_pages = bootmem_bootmap_pages(total_pages);
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bootmem_paddr = lmb_alloc(bootmap_pages << PAGE_SHIFT, PAGE_SIZE);
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2005-04-16 16:20:36 -06:00
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/*
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* Find a proper area for the bootmem bitmap. After this
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* bootstrap step all allocations (until the page allocator
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* is intact) must be done via bootmem_alloc().
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*/
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2009-07-03 01:16:54 -06:00
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bootmap_size = init_bootmem_node(NODE_DATA(0),
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bootmem_paddr >> PAGE_SHIFT,
|
2007-03-28 01:38:13 -06:00
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min_low_pfn, max_low_pfn);
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2005-04-16 16:20:36 -06:00
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2009-07-03 01:16:54 -06:00
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/* Add active regions with valid PFNs. */
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for (i = 0; i < lmb.memory.cnt; i++) {
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unsigned long start_pfn, end_pfn;
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start_pfn = lmb.memory.region[i].base >> PAGE_SHIFT;
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end_pfn = start_pfn + lmb_size_pages(&lmb.memory, i);
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__add_active_range(0, start_pfn, end_pfn);
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}
|
2006-12-11 17:00:47 -07:00
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2005-04-16 16:20:36 -06:00
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/*
|
2009-07-03 01:16:54 -06:00
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* Add all physical memory to the bootmem map and mark each
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* area as present.
|
2005-04-16 16:20:36 -06:00
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*/
|
2009-07-03 01:16:54 -06:00
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register_bootmem_low_pages();
|
2005-04-16 16:20:36 -06:00
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2009-07-03 01:16:54 -06:00
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/* Reserve the sections we're already using. */
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for (i = 0; i < lmb.reserved.cnt; i++)
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reserve_bootmem(lmb.reserved.region[i].base,
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lmb_size_bytes(&lmb.reserved, i),
|
2008-10-06 05:46:18 -06:00
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BOOTMEM_DEFAULT);
|
2005-04-16 16:20:36 -06:00
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2009-07-03 01:16:54 -06:00
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node_set_online(0);
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|
2007-06-01 02:04:36 -06:00
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sparse_memory_present_with_active_regions(0);
|
2007-03-28 01:38:13 -06:00
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}
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|
2010-05-10 05:17:25 -06:00
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static void __init early_reserve_mem(void)
|
2007-03-28 01:38:13 -06:00
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{
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unsigned long start_pfn;
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/*
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* Partially used pages are not usable - thus
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* we are rounding upwards:
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*/
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start_pfn = PFN_UP(__pa(_end));
|
2009-07-03 01:16:54 -06:00
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|
/*
|
|
|
|
* Reserve the kernel text and
|
|
|
|
* Reserve the bootmem bitmap. We do this in two steps (first step
|
|
|
|
* was init_bootmem()), because this catches the (definitely buggy)
|
|
|
|
* case of us accidentally initializing the bootmem allocator with
|
|
|
|
* an invalid RAM area.
|
|
|
|
*/
|
|
|
|
lmb_reserve(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET,
|
|
|
|
(PFN_PHYS(start_pfn) + PAGE_SIZE - 1) -
|
|
|
|
(__MEMORY_START + CONFIG_ZERO_PAGE_OFFSET));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reserve physical pages below CONFIG_ZERO_PAGE_OFFSET.
|
|
|
|
*/
|
|
|
|
if (CONFIG_ZERO_PAGE_OFFSET != 0)
|
|
|
|
lmb_reserve(__MEMORY_START, CONFIG_ZERO_PAGE_OFFSET);
|
|
|
|
|
2010-05-10 05:17:25 -06:00
|
|
|
/*
|
|
|
|
* Handle additional early reservations
|
|
|
|
*/
|
|
|
|
check_for_initrd();
|
|
|
|
reserve_crashkernel();
|
2007-03-28 01:38:13 -06:00
|
|
|
}
|
|
|
|
|
2008-07-29 18:29:39 -06:00
|
|
|
/*
|
|
|
|
* Note: elfcorehdr_addr is not just limited to vmcore. It is also used by
|
|
|
|
* is_kdump_kernel() to determine if we are booting after a panic. Hence
|
|
|
|
* ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE.
|
|
|
|
*/
|
|
|
|
#ifdef CONFIG_CRASH_DUMP
|
|
|
|
/* elfcorehdr= specifies the location of elf core header
|
|
|
|
* stored by the crashed kernel.
|
|
|
|
*/
|
|
|
|
static int __init parse_elfcorehdr(char *arg)
|
|
|
|
{
|
|
|
|
if (!arg)
|
|
|
|
return -EINVAL;
|
|
|
|
elfcorehdr_addr = memparse(arg, &arg);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
early_param("elfcorehdr", parse_elfcorehdr);
|
|
|
|
#endif
|
|
|
|
|
2010-05-10 00:39:05 -06:00
|
|
|
void __init __weak plat_early_device_setup(void)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
void __init __weak plat_mem_setup(void)
|
2009-04-15 04:50:21 -06:00
|
|
|
{
|
|
|
|
}
|
|
|
|
|
2007-03-28 01:38:13 -06:00
|
|
|
void __init setup_arch(char **cmdline_p)
|
|
|
|
{
|
|
|
|
enable_mmu();
|
|
|
|
|
|
|
|
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
|
|
|
|
|
2008-05-13 02:40:17 -06:00
|
|
|
printk(KERN_NOTICE "Boot params:\n"
|
|
|
|
"... MOUNT_ROOT_RDONLY - %08lx\n"
|
|
|
|
"... RAMDISK_FLAGS - %08lx\n"
|
|
|
|
"... ORIG_ROOT_DEV - %08lx\n"
|
|
|
|
"... LOADER_TYPE - %08lx\n"
|
|
|
|
"... INITRD_START - %08lx\n"
|
|
|
|
"... INITRD_SIZE - %08lx\n",
|
|
|
|
MOUNT_ROOT_RDONLY, RAMDISK_FLAGS,
|
|
|
|
ORIG_ROOT_DEV, LOADER_TYPE,
|
|
|
|
INITRD_START, INITRD_SIZE);
|
|
|
|
|
2007-03-28 01:38:13 -06:00
|
|
|
#ifdef CONFIG_BLK_DEV_RAM
|
|
|
|
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
|
|
|
|
rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
|
|
|
|
rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (!MOUNT_ROOT_RDONLY)
|
|
|
|
root_mountflags &= ~MS_RDONLY;
|
|
|
|
init_mm.start_code = (unsigned long) _text;
|
|
|
|
init_mm.end_code = (unsigned long) _etext;
|
|
|
|
init_mm.end_data = (unsigned long) _edata;
|
|
|
|
init_mm.brk = (unsigned long) _end;
|
|
|
|
|
|
|
|
code_resource.start = virt_to_phys(_text);
|
|
|
|
code_resource.end = virt_to_phys(_etext)-1;
|
|
|
|
data_resource.start = virt_to_phys(_etext);
|
|
|
|
data_resource.end = virt_to_phys(_edata)-1;
|
2008-04-23 05:50:27 -06:00
|
|
|
bss_resource.start = virt_to_phys(__bss_start);
|
|
|
|
bss_resource.end = virt_to_phys(_ebss)-1;
|
2007-03-28 01:38:13 -06:00
|
|
|
|
2009-08-24 01:25:38 -06:00
|
|
|
#ifdef CONFIG_CMDLINE_OVERWRITE
|
2007-05-14 02:48:00 -06:00
|
|
|
strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
|
|
|
|
#else
|
|
|
|
strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
|
2009-08-24 01:25:38 -06:00
|
|
|
#ifdef CONFIG_CMDLINE_EXTEND
|
|
|
|
strlcat(command_line, " ", sizeof(command_line));
|
|
|
|
strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
|
|
|
|
#endif
|
2007-05-14 02:48:00 -06:00
|
|
|
#endif
|
2007-05-14 00:59:09 -06:00
|
|
|
|
2007-05-14 02:48:00 -06:00
|
|
|
/* Save unparsed command line copy for /proc/cmdline */
|
|
|
|
memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
|
2007-05-14 00:59:09 -06:00
|
|
|
*cmdline_p = command_line;
|
|
|
|
|
2007-03-28 01:38:13 -06:00
|
|
|
parse_early_param();
|
|
|
|
|
2009-04-15 04:50:21 -06:00
|
|
|
plat_early_device_setup();
|
|
|
|
|
2009-12-14 03:24:42 -07:00
|
|
|
/* Let earlyprintk output early console messages */
|
|
|
|
early_platform_driver_probe("earlyprintk", 1, 1);
|
|
|
|
|
2010-05-10 00:39:05 -06:00
|
|
|
lmb_init();
|
|
|
|
|
2007-05-14 00:59:09 -06:00
|
|
|
sh_mv_setup();
|
2010-05-10 00:39:05 -06:00
|
|
|
sh_mv.mv_mem_init();
|
2007-03-28 01:38:13 -06:00
|
|
|
|
2010-05-10 05:17:25 -06:00
|
|
|
early_reserve_mem();
|
|
|
|
|
|
|
|
lmb_enforce_memory_limit(memory_limit);
|
|
|
|
lmb_analyze();
|
|
|
|
|
|
|
|
lmb_dump_all();
|
2007-03-28 01:38:13 -06:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Determine low and high memory ranges:
|
|
|
|
*/
|
2010-05-10 05:17:25 -06:00
|
|
|
max_low_pfn = max_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT;
|
2007-03-28 01:38:13 -06:00
|
|
|
min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
|
|
|
|
|
|
|
|
nodes_clear(node_online_map);
|
2007-05-23 02:48:36 -06:00
|
|
|
|
2010-05-10 05:17:25 -06:00
|
|
|
memory_start = (unsigned long)__va(__MEMORY_START);
|
|
|
|
memory_end = memory_start + (memory_limit ?: lmb_phys_mem_size());
|
|
|
|
|
|
|
|
uncached_init();
|
2010-03-02 21:16:31 -07:00
|
|
|
pmb_init();
|
2010-05-10 05:17:25 -06:00
|
|
|
do_init_bootmem();
|
|
|
|
plat_mem_setup();
|
2007-03-28 01:38:13 -06:00
|
|
|
sparse_init();
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
#ifdef CONFIG_DUMMY_CONSOLE
|
|
|
|
conswitchp = &dummy_con;
|
|
|
|
#endif
|
2009-11-05 00:54:17 -07:00
|
|
|
paging_init();
|
|
|
|
|
|
|
|
ioremap_fixed_init();
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
/* Perform the machine specific initialisation */
|
2006-09-27 03:17:31 -06:00
|
|
|
if (likely(sh_mv.mv_setup))
|
|
|
|
sh_mv.mv_setup(cmdline_p);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-09-21 03:39:49 -06:00
|
|
|
plat_smp_setup();
|
2007-05-23 02:48:36 -06:00
|
|
|
}
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2009-05-28 05:51:51 -06:00
|
|
|
/* processor boot mode configuration */
|
|
|
|
int generic_mode_pins(void)
|
|
|
|
{
|
|
|
|
pr_warning("generic_mode_pins(): missing mode pin configuration\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int test_mode_pin(int pin)
|
|
|
|
{
|
2009-06-02 03:22:02 -06:00
|
|
|
return sh_mv.mv_mode_pins() & pin;
|
2009-05-28 05:51:51 -06:00
|
|
|
}
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
static const char *cpu_name[] = {
|
2008-11-28 06:48:20 -07:00
|
|
|
[CPU_SH7201] = "SH7201",
|
2007-11-26 03:54:02 -07:00
|
|
|
[CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263",
|
2006-11-19 22:14:29 -07:00
|
|
|
[CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
|
2006-09-27 02:38:11 -06:00
|
|
|
[CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706",
|
|
|
|
[CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708",
|
|
|
|
[CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710",
|
2007-08-19 17:59:33 -06:00
|
|
|
[CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720",
|
2007-12-25 19:45:06 -07:00
|
|
|
[CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729",
|
|
|
|
[CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S",
|
|
|
|
[CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751",
|
|
|
|
[CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760",
|
2006-09-27 02:38:11 -06:00
|
|
|
[CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
|
2008-01-06 22:40:07 -07:00
|
|
|
[CPU_SH7763] = "SH7763", [CPU_SH7770] = "SH7770",
|
|
|
|
[CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781",
|
|
|
|
[CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785",
|
2009-08-21 01:30:28 -06:00
|
|
|
[CPU_SH7786] = "SH7786", [CPU_SH7757] = "SH7757",
|
2008-01-06 22:40:07 -07:00
|
|
|
[CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3",
|
2007-11-20 02:29:00 -07:00
|
|
|
[CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103",
|
2008-04-09 02:56:18 -06:00
|
|
|
[CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723",
|
2009-04-15 23:40:56 -06:00
|
|
|
[CPU_SH7366] = "SH7366", [CPU_SH7724] = "SH7724",
|
|
|
|
[CPU_SH_NONE] = "Unknown"
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
2006-12-24 18:19:56 -07:00
|
|
|
const char *get_cpu_subtype(struct sh_cpuinfo *c)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
2006-12-24 18:19:56 -07:00
|
|
|
return cpu_name[c->type];
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
2008-06-17 16:30:24 -06:00
|
|
|
EXPORT_SYMBOL(get_cpu_subtype);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
#ifdef CONFIG_PROC_FS
|
2006-09-27 03:24:28 -06:00
|
|
|
/* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
|
2005-04-16 16:20:36 -06:00
|
|
|
static const char *cpu_flags[] = {
|
2006-09-27 03:24:28 -06:00
|
|
|
"none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
|
2009-03-17 02:49:49 -06:00
|
|
|
"ptea", "llsc", "l2", "op32", "pteaex", NULL
|
2005-04-16 16:20:36 -06:00
|
|
|
};
|
|
|
|
|
2006-12-24 18:19:56 -07:00
|
|
|
static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
unsigned long i;
|
|
|
|
|
|
|
|
seq_printf(m, "cpu flags\t:");
|
|
|
|
|
2006-12-24 18:19:56 -07:00
|
|
|
if (!c->flags) {
|
2005-04-16 16:20:36 -06:00
|
|
|
seq_printf(m, " %s\n", cpu_flags[0]);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2006-02-01 04:06:02 -07:00
|
|
|
for (i = 0; cpu_flags[i]; i++)
|
2006-12-24 18:19:56 -07:00
|
|
|
if ((c->flags & (1 << i)))
|
2005-04-16 16:20:36 -06:00
|
|
|
seq_printf(m, " %s", cpu_flags[i+1]);
|
|
|
|
|
|
|
|
seq_printf(m, "\n");
|
|
|
|
}
|
|
|
|
|
2006-09-27 03:17:31 -06:00
|
|
|
static void show_cacheinfo(struct seq_file *m, const char *type,
|
|
|
|
struct cache_info info)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
unsigned int cache_size;
|
|
|
|
|
|
|
|
cache_size = info.ways * info.sets * info.linesz;
|
|
|
|
|
2006-02-01 04:06:02 -07:00
|
|
|
seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
|
|
|
|
type, cache_size >> 10, info.ways);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Get CPU information for use by the procfs.
|
|
|
|
*/
|
|
|
|
static int show_cpuinfo(struct seq_file *m, void *v)
|
|
|
|
{
|
2006-12-24 18:19:56 -07:00
|
|
|
struct sh_cpuinfo *c = v;
|
|
|
|
unsigned int cpu = c - cpu_data;
|
|
|
|
|
|
|
|
if (!cpu_online(cpu))
|
|
|
|
return 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-12-24 18:19:56 -07:00
|
|
|
if (cpu == 0)
|
2005-04-16 16:20:36 -06:00
|
|
|
seq_printf(m, "machine\t\t: %s\n", get_system_type());
|
2009-10-13 23:13:41 -06:00
|
|
|
else
|
|
|
|
seq_printf(m, "\n");
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
seq_printf(m, "processor\t: %d\n", cpu);
|
2006-10-02 03:18:13 -06:00
|
|
|
seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
|
2006-12-24 18:19:56 -07:00
|
|
|
seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
|
2008-07-02 00:15:09 -06:00
|
|
|
if (c->cut_major == -1)
|
|
|
|
seq_printf(m, "cut\t\t: unknown\n");
|
|
|
|
else if (c->cut_minor == -1)
|
|
|
|
seq_printf(m, "cut\t\t: %d.x\n", c->cut_major);
|
|
|
|
else
|
|
|
|
seq_printf(m, "cut\t\t: %d.%d\n", c->cut_major, c->cut_minor);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2006-12-24 18:19:56 -07:00
|
|
|
show_cpuflags(m, c);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
seq_printf(m, "cache type\t: ");
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Check for what type of cache we have, we support both the
|
|
|
|
* unified cache on the SH-2 and SH-3, as well as the harvard
|
|
|
|
* style cache on the SH-4.
|
|
|
|
*/
|
2006-12-24 18:19:56 -07:00
|
|
|
if (c->icache.flags & SH_CACHE_COMBINED) {
|
2005-04-16 16:20:36 -06:00
|
|
|
seq_printf(m, "unified\n");
|
2006-12-24 18:19:56 -07:00
|
|
|
show_cacheinfo(m, "cache", c->icache);
|
2005-04-16 16:20:36 -06:00
|
|
|
} else {
|
|
|
|
seq_printf(m, "split (harvard)\n");
|
2006-12-24 18:19:56 -07:00
|
|
|
show_cacheinfo(m, "icache", c->icache);
|
|
|
|
show_cacheinfo(m, "dcache", c->dcache);
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
2006-09-27 03:27:43 -06:00
|
|
|
/* Optional secondary cache */
|
2006-12-24 18:19:56 -07:00
|
|
|
if (c->flags & CPU_HAS_L2_CACHE)
|
|
|
|
show_cacheinfo(m, "scache", c->scache);
|
2006-09-27 03:27:43 -06:00
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
seq_printf(m, "bogomips\t: %lu.%02lu\n",
|
2006-12-24 18:19:56 -07:00
|
|
|
c->loops_per_jiffy/(500000/HZ),
|
|
|
|
(c->loops_per_jiffy/(5000/HZ)) % 100);
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-04-25 21:17:20 -06:00
|
|
|
return 0;
|
2005-04-16 16:20:36 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static void *c_start(struct seq_file *m, loff_t *pos)
|
|
|
|
{
|
|
|
|
return *pos < NR_CPUS ? cpu_data + *pos : 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)
|
|
|
|
{
|
|
|
|
}
|
2008-01-22 20:47:48 -07:00
|
|
|
const struct seq_operations cpuinfo_op = {
|
2005-04-16 16:20:36 -06:00
|
|
|
.start = c_start,
|
|
|
|
.next = c_next,
|
|
|
|
.stop = c_stop,
|
|
|
|
.show = show_cpuinfo,
|
|
|
|
};
|
|
|
|
#endif /* CONFIG_PROC_FS */
|
2008-03-07 01:19:58 -07:00
|
|
|
|
|
|
|
struct dentry *sh_debugfs_root;
|
|
|
|
|
|
|
|
static int __init sh_debugfs_init(void)
|
|
|
|
{
|
|
|
|
sh_debugfs_root = debugfs_create_dir("sh", NULL);
|
2008-10-17 05:25:03 -06:00
|
|
|
if (!sh_debugfs_root)
|
|
|
|
return -ENOMEM;
|
2008-03-07 01:19:58 -07:00
|
|
|
if (IS_ERR(sh_debugfs_root))
|
|
|
|
return PTR_ERR(sh_debugfs_root);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
arch_initcall(sh_debugfs_init);
|