arch/sh/kernel/setup.c - arm/linux-arm64-legacy - Git at Google

 /*
  * arch/sh/kernel/setup.c
  *
  * This file handles the architecture-dependent parts of initialization
  *
  *  Copyright (C) 1999  Niibe Yutaka
  *  Copyright (C) 2002 - 2010 Paul Mundt
  */
 #include <linux/screen_info.h>
 #include <linux/ioport.h>
 #include <linux/init.h>
 #include <linux/initrd.h>
 #include <linux/bootmem.h>
 #include <linux/console.h>
 #include <linux/seq_file.h>
 #include <linux/root_dev.h>
 #include <linux/utsname.h>
 #include <linux/nodemask.h>
 #include <linux/cpu.h>
 #include <linux/pfn.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/kexec.h>
 #include <linux/module.h>
 #include <linux/smp.h>
 #include <linux/err.h>
 #include <linux/crash_dump.h>
 #include <linux/mmzone.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/platform_device.h>
 #include <linux/memblock.h>
 #include <asm/uaccess.h>
 #include <asm/io.h>
 #include <asm/page.h>
 #include <asm/elf.h>
 #include <asm/sections.h>
 #include <asm/irq.h>
 #include <asm/setup.h>
 #include <asm/clock.h>
 #include <asm/smp.h>
 #include <asm/mmu_context.h>
 #include <asm/mmzone.h>
 #include <asm/sparsemem.h>

 /*
  * Initialize loops_per_jiffy as 10000000 (1000MIPS).
  * This value will be used at the very early stage of serial setup.
  * The bigger value means no problem.
  */
 struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
 	[0] = {
 		.type			= CPU_SH_NONE,
 		.family			= CPU_FAMILY_UNKNOWN,
 		.loops_per_jiffy	= 10000000,
 		.phys_bits		= MAX_PHYSMEM_BITS,
 	},
 };
 EXPORT_SYMBOL(cpu_data);

 /*
  * The machine vector. First entry in .machvec.init, or clobbered by
  * sh_mv= on the command line, prior to .machvec.init teardown.
  */
 struct sh_machine_vector sh_mv = { .mv_name = "generic", };
 EXPORT_SYMBOL(sh_mv);

 #ifdef CONFIG_VT
 struct screen_info screen_info;
 #endif

 extern int root_mountflags;

 #define RAMDISK_IMAGE_START_MASK	0x07FF
 #define RAMDISK_PROMPT_FLAG		0x8000
 #define RAMDISK_LOAD_FLAG		0x4000

 static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };

 static struct resource code_resource = {
 	.name = "Kernel code",
 	.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
 };

 static struct resource data_resource = {
 	.name = "Kernel data",
 	.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
 };

 static struct resource bss_resource = {
 	.name	= "Kernel bss",
 	.flags	= IORESOURCE_BUSY | IORESOURCE_MEM,
 };

 unsigned long memory_start;
 EXPORT_SYMBOL(memory_start);
 unsigned long memory_end = 0;
 EXPORT_SYMBOL(memory_end);
 unsigned long memory_limit = 0;

 static struct resource mem_resources[MAX_NUMNODES];

 int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;

 static int __init early_parse_mem(char *p)
 {
 	if (!p)
 		return 1;

 	memory_limit = PAGE_ALIGN(memparse(p, &p));

 	pr_notice("Memory limited to %ldMB\n", memory_limit >> 20);

 	return 0;
 }
 early_param("mem", early_parse_mem);

 void __init check_for_initrd(void)
 {
 #ifdef CONFIG_BLK_DEV_INITRD
 	unsigned long start, end;

 	/*
 	 * Check for the rare cases where boot loaders adhere to the boot
 	 * ABI.
 	 */
 	if (!LOADER_TYPE || !INITRD_START || !INITRD_SIZE)
 		goto disable;

 	start = INITRD_START + __MEMORY_START;
 	end = start + INITRD_SIZE;

 	if (unlikely(end <= start))
 		goto disable;
 	if (unlikely(start & ~PAGE_MASK)) {
 		pr_err("initrd must be page aligned\n");
 		goto disable;
 	}

 	if (unlikely(start < __MEMORY_START)) {
 		pr_err("initrd start (%08lx) < __MEMORY_START(%x)\n",
 			start, __MEMORY_START);
 		goto disable;
 	}

 	if (unlikely(end > memblock_end_of_DRAM())) {
 		pr_err("initrd extends beyond end of memory "
 		       "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
 		       end, (unsigned long)memblock_end_of_DRAM());
 		goto disable;
 	}

 	/*
 	 * If we got this far inspite of the boot loader's best efforts
 	 * to the contrary, assume we actually have a valid initrd and
 	 * fix up the root dev.
 	 */
 	ROOT_DEV = Root_RAM0;

 	/*
 	 * Address sanitization
 	 */
 	initrd_start = (unsigned long)__va(start);
 	initrd_end = initrd_start + INITRD_SIZE;

 	memblock_reserve(__pa(initrd_start), INITRD_SIZE);

 	return;

 disable:
 	pr_info("initrd disabled\n");
 	initrd_start = initrd_end = 0;
 #endif
 }

 void __cpuinit calibrate_delay(void)
 {
 	struct clk *clk = clk_get(NULL, "cpu_clk");

 	if (IS_ERR(clk))
 		panic("Need a sane CPU clock definition!");

 	loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ;

 	printk(KERN_INFO "Calibrating delay loop (skipped)... "
 			 "%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n",
 			 loops_per_jiffy/(500000/HZ),
 			 (loops_per_jiffy/(5000/HZ)) % 100,
 			 loops_per_jiffy);
 }

 void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
 						unsigned long end_pfn)
 {
 	struct resource *res = &mem_resources[nid];
 	unsigned long start, end;

 	WARN_ON(res->name); /* max one active range per node for now */

 	start = start_pfn << PAGE_SHIFT;
 	end = end_pfn << PAGE_SHIFT;

 	res->name = "System RAM";
 	res->start = start;
 	res->end = end - 1;
 	res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;

 	if (request_resource(&iomem_resource, res)) {
 		pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
 		       start_pfn, end_pfn);
 		return;
 	}

 	/*
 	 *  We don't know which RAM region contains kernel data,
 	 *  so we try it repeatedly and let the resource manager
 	 *  test it.
 	 */
 	request_resource(res, &code_resource);
 	request_resource(res, &data_resource);
 	request_resource(res, &bss_resource);

 	/*
 	 * Also make sure that there is a PMB mapping that covers this
 	 * range before we attempt to activate it, to avoid reset by MMU.
 	 * We can hit this path with NUMA or memory hot-add.
 	 */
 	pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
 			 PAGE_KERNEL);

 	add_active_range(nid, start_pfn, end_pfn);
 }

 void __init __weak plat_early_device_setup(void)
 {
 }

 void __init setup_arch(char **cmdline_p)
 {
 	enable_mmu();

 	ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);

 	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);

 #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;
 	bss_resource.start = virt_to_phys(__bss_start);
 	bss_resource.end = virt_to_phys(_ebss)-1;

 #ifdef CONFIG_CMDLINE_OVERWRITE
 	strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
 #else
 	strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
 #ifdef CONFIG_CMDLINE_EXTEND
 	strlcat(command_line, " ", sizeof(command_line));
 	strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
 #endif
 #endif

 	/* Save unparsed command line copy for /proc/cmdline */
 	memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = command_line;

 	parse_early_param();

 	plat_early_device_setup();

 	sh_mv_setup();

 	/* Let earlyprintk output early console messages */
 	early_platform_driver_probe("earlyprintk", 1, 1);

 	paging_init();

 #ifdef CONFIG_DUMMY_CONSOLE
 	conswitchp = &dummy_con;
 #endif

 	/* Perform the machine specific initialisation */
 	if (likely(sh_mv.mv_setup))
 		sh_mv.mv_setup(cmdline_p);

 	plat_smp_setup();
 }

 /* 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)
 {
 	return sh_mv.mv_mode_pins() & pin;
 }

 static const char *cpu_name[] = {
 	[CPU_SH7201]	= "SH7201",
 	[CPU_SH7203]	= "SH7203",	[CPU_SH7263]	= "SH7263",
 	[CPU_SH7206]	= "SH7206",	[CPU_SH7619]	= "SH7619",
 	[CPU_SH7705]	= "SH7705",	[CPU_SH7706]	= "SH7706",
 	[CPU_SH7707]	= "SH7707",	[CPU_SH7708]	= "SH7708",
 	[CPU_SH7709]	= "SH7709",	[CPU_SH7710]	= "SH7710",
 	[CPU_SH7712]	= "SH7712",	[CPU_SH7720]	= "SH7720",
 	[CPU_SH7721]	= "SH7721",	[CPU_SH7729]	= "SH7729",
 	[CPU_SH7750]	= "SH7750",	[CPU_SH7750S]	= "SH7750S",
 	[CPU_SH7750R]	= "SH7750R",	[CPU_SH7751]	= "SH7751",
 	[CPU_SH7751R]	= "SH7751R",	[CPU_SH7760]	= "SH7760",
 	[CPU_SH4_202]	= "SH4-202",	[CPU_SH4_501]	= "SH4-501",
 	[CPU_SH7763]	= "SH7763",	[CPU_SH7770]	= "SH7770",
 	[CPU_SH7780]	= "SH7780",	[CPU_SH7781]	= "SH7781",
 	[CPU_SH7343]	= "SH7343",	[CPU_SH7785]	= "SH7785",
 	[CPU_SH7786]	= "SH7786",	[CPU_SH7757]	= "SH7757",
 	[CPU_SH7722]	= "SH7722",	[CPU_SHX3]	= "SH-X3",
 	[CPU_SH5_101]	= "SH5-101",	[CPU_SH5_103]	= "SH5-103",
 	[CPU_MXG]	= "MX-G",	[CPU_SH7723]	= "SH7723",
 	[CPU_SH7366]	= "SH7366",	[CPU_SH7724]	= "SH7724",
 	[CPU_SH_NONE]	= "Unknown"
 };

 const char *get_cpu_subtype(struct sh_cpuinfo *c)
 {
 	return cpu_name[c->type];
 }
 EXPORT_SYMBOL(get_cpu_subtype);

 #ifdef CONFIG_PROC_FS
 /* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
 static const char *cpu_flags[] = {
 	"none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
 	"ptea", "llsc", "l2", "op32", "pteaex", NULL
 };

 static void show_cpuflags(struct seq_file *m, struct sh_cpuinfo *c)
 {
 	unsigned long i;

 	seq_printf(m, "cpu flags\t:");

 	if (!c->flags) {
 		seq_printf(m, " %s\n", cpu_flags[0]);
 		return;
 	}

 	for (i = 0; cpu_flags[i]; i++)
 		if ((c->flags & (1 << i)))
 			seq_printf(m, " %s", cpu_flags[i+1]);

 	seq_printf(m, "\n");
 }

 static void show_cacheinfo(struct seq_file *m, const char *type,
 			   struct cache_info info)
 {
 	unsigned int cache_size;

 	cache_size = info.ways * info.sets * info.linesz;

 	seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
 		   type, cache_size >> 10, info.ways);
 }

 /*
  *	Get CPU information for use by the procfs.
  */
 static int show_cpuinfo(struct seq_file *m, void *v)
 {
 	struct sh_cpuinfo *c = v;
 	unsigned int cpu = c - cpu_data;

 	if (!cpu_online(cpu))
 		return 0;

 	if (cpu == 0)
 		seq_printf(m, "machine\t\t: %s\n", get_system_type());
 	else
 		seq_printf(m, "\n");

 	seq_printf(m, "processor\t: %d\n", cpu);
 	seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
 	seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
 	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);

 	show_cpuflags(m, c);

 	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.
 	 */
 	if (c->icache.flags & SH_CACHE_COMBINED) {
 		seq_printf(m, "unified\n");
 		show_cacheinfo(m, "cache", c->icache);
 	} else {
 		seq_printf(m, "split (harvard)\n");
 		show_cacheinfo(m, "icache", c->icache);
 		show_cacheinfo(m, "dcache", c->dcache);
 	}

 	/* Optional secondary cache */
 	if (c->flags & CPU_HAS_L2_CACHE)
 		show_cacheinfo(m, "scache", c->scache);

 	seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits);

 	seq_printf(m, "bogomips\t: %lu.%02lu\n",
 		     c->loops_per_jiffy/(500000/HZ),
 		     (c->loops_per_jiffy/(5000/HZ)) % 100);

 	return 0;
 }

 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)
 {
 }
 const struct seq_operations cpuinfo_op = {
 	.start	= c_start,
 	.next	= c_next,
 	.stop	= c_stop,
 	.show	= show_cpuinfo,
 };
 #endif /* CONFIG_PROC_FS */
	/*
	* arch/sh/kernel/setup.c
	*
	* This file handles the architecture-dependent parts of initialization
	*
	* Copyright (C) 1999 Niibe Yutaka
	* Copyright (C) 2002 - 2010 Paul Mundt
	*/
	#include <linux/screen_info.h>
	#include <linux/ioport.h>
	#include <linux/init.h>
	#include <linux/initrd.h>
	#include <linux/bootmem.h>
	#include <linux/console.h>
	#include <linux/seq_file.h>
	#include <linux/root_dev.h>
	#include <linux/utsname.h>
	#include <linux/nodemask.h>
	#include <linux/cpu.h>
	#include <linux/pfn.h>
	#include <linux/fs.h>
	#include <linux/mm.h>
	#include <linux/kexec.h>
	#include <linux/module.h>
	#include <linux/smp.h>
	#include <linux/err.h>
	#include <linux/crash_dump.h>
	#include <linux/mmzone.h>
	#include <linux/clk.h>
	#include <linux/delay.h>
	#include <linux/platform_device.h>
	#include <linux/memblock.h>
	#include <asm/uaccess.h>
	#include <asm/io.h>
	#include <asm/page.h>
	#include <asm/elf.h>
	#include <asm/sections.h>
	#include <asm/irq.h>
	#include <asm/setup.h>
	#include <asm/clock.h>
	#include <asm/smp.h>
	#include <asm/mmu_context.h>
	#include <asm/mmzone.h>
	#include <asm/sparsemem.h>

	/*
	* Initialize loops_per_jiffy as 10000000 (1000MIPS).
	* This value will be used at the very early stage of serial setup.
	* The bigger value means no problem.
	*/
	struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
	[0] = {
	.type = CPU_SH_NONE,
	.family = CPU_FAMILY_UNKNOWN,
	.loops_per_jiffy = 10000000,
	.phys_bits = MAX_PHYSMEM_BITS,
	},
	};
	EXPORT_SYMBOL(cpu_data);

	/*
	* The machine vector. First entry in .machvec.init, or clobbered by
	* sh_mv= on the command line, prior to .machvec.init teardown.
	*/
	struct sh_machine_vector sh_mv = { .mv_name = "generic", };
	EXPORT_SYMBOL(sh_mv);

	#ifdef CONFIG_VT
	struct screen_info screen_info;
	#endif

	extern int root_mountflags;

	#define RAMDISK_IMAGE_START_MASK 0x07FF
	#define RAMDISK_PROMPT_FLAG 0x8000
	#define RAMDISK_LOAD_FLAG 0x4000

	static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };

	static struct resource code_resource = {
	.name = "Kernel code",
	.flags = IORESOURCE_BUSY \| IORESOURCE_MEM,
	};

	static struct resource data_resource = {
	.name = "Kernel data",
	.flags = IORESOURCE_BUSY \| IORESOURCE_MEM,
	};

	static struct resource bss_resource = {
	.name = "Kernel bss",
	.flags = IORESOURCE_BUSY \| IORESOURCE_MEM,
	};

	unsigned long memory_start;
	EXPORT_SYMBOL(memory_start);
	unsigned long memory_end = 0;
	EXPORT_SYMBOL(memory_end);
	unsigned long memory_limit = 0;

	static struct resource mem_resources[MAX_NUMNODES];

	int l1i_cache_shape, l1d_cache_shape, l2_cache_shape;

	static int __init early_parse_mem(char *p)
	{
	if (!p)
	return 1;

	memory_limit = PAGE_ALIGN(memparse(p, &p));

	pr_notice("Memory limited to %ldMB\n", memory_limit >> 20);

	return 0;
	}
	early_param("mem", early_parse_mem);

	void __init check_for_initrd(void)
	{
	#ifdef CONFIG_BLK_DEV_INITRD
	unsigned long start, end;

	/*
	* Check for the rare cases where boot loaders adhere to the boot
	* ABI.
	*/
	if (!LOADER_TYPE \|\| !INITRD_START \|\| !INITRD_SIZE)
	goto disable;

	start = INITRD_START + __MEMORY_START;
	end = start + INITRD_SIZE;

	if (unlikely(end <= start))
	goto disable;
	if (unlikely(start & ~PAGE_MASK)) {
	pr_err("initrd must be page aligned\n");
	goto disable;
	}

	if (unlikely(start < __MEMORY_START)) {
	pr_err("initrd start (%08lx) < __MEMORY_START(%x)\n",
	start, __MEMORY_START);
	goto disable;
	}

	if (unlikely(end > memblock_end_of_DRAM())) {
	pr_err("initrd extends beyond end of memory "
	"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
	end, (unsigned long)memblock_end_of_DRAM());
	goto disable;
	}

	/*
	* If we got this far inspite of the boot loader's best efforts
	* to the contrary, assume we actually have a valid initrd and
	* fix up the root dev.
	*/
	ROOT_DEV = Root_RAM0;

	/*
	* Address sanitization
	*/
	initrd_start = (unsigned long)__va(start);
	initrd_end = initrd_start + INITRD_SIZE;

	memblock_reserve(__pa(initrd_start), INITRD_SIZE);

	return;

	disable:
	pr_info("initrd disabled\n");
	initrd_start = initrd_end = 0;
	#endif
	}

	void __cpuinit calibrate_delay(void)
	{
	struct clk *clk = clk_get(NULL, "cpu_clk");

	if (IS_ERR(clk))
	panic("Need a sane CPU clock definition!");

	loops_per_jiffy = (clk_get_rate(clk) >> 1) / HZ;

	printk(KERN_INFO "Calibrating delay loop (skipped)... "
	"%lu.%02lu BogoMIPS PRESET (lpj=%lu)\n",
	loops_per_jiffy/(500000/HZ),
	(loops_per_jiffy/(5000/HZ)) % 100,
	loops_per_jiffy);
	}

	void __init __add_active_range(unsigned int nid, unsigned long start_pfn,
	unsigned long end_pfn)
	{
	struct resource *res = &mem_resources[nid];
	unsigned long start, end;

	WARN_ON(res->name); /* max one active range per node for now */

	start = start_pfn << PAGE_SHIFT;
	end = end_pfn << PAGE_SHIFT;

	res->name = "System RAM";
	res->start = start;
	res->end = end - 1;
	res->flags = IORESOURCE_MEM \| IORESOURCE_BUSY;

	if (request_resource(&iomem_resource, res)) {
	pr_err("unable to request memory_resource 0x%lx 0x%lx\n",
	start_pfn, end_pfn);
	return;
	}

	/*
	* We don't know which RAM region contains kernel data,
	* so we try it repeatedly and let the resource manager
	* test it.
	*/
	request_resource(res, &code_resource);
	request_resource(res, &data_resource);
	request_resource(res, &bss_resource);

	/*
	* Also make sure that there is a PMB mapping that covers this
	* range before we attempt to activate it, to avoid reset by MMU.
	* We can hit this path with NUMA or memory hot-add.
	*/
	pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
	PAGE_KERNEL);

	add_active_range(nid, start_pfn, end_pfn);
	}

	void __init __weak plat_early_device_setup(void)
	{
	}

	void __init setup_arch(char **cmdline_p)
	{
	enable_mmu();

	ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);

	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);

	#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;
	bss_resource.start = virt_to_phys(__bss_start);
	bss_resource.end = virt_to_phys(_ebss)-1;

	#ifdef CONFIG_CMDLINE_OVERWRITE
	strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
	#else
	strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
	#ifdef CONFIG_CMDLINE_EXTEND
	strlcat(command_line, " ", sizeof(command_line));
	strlcat(command_line, CONFIG_CMDLINE, sizeof(command_line));
	#endif
	#endif

	/* Save unparsed command line copy for /proc/cmdline */
	memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
	*cmdline_p = command_line;

	parse_early_param();

	plat_early_device_setup();

	sh_mv_setup();

	/* Let earlyprintk output early console messages */
	early_platform_driver_probe("earlyprintk", 1, 1);

	paging_init();

	#ifdef CONFIG_DUMMY_CONSOLE
	conswitchp = &dummy_con;
	#endif

	/* Perform the machine specific initialisation */
	if (likely(sh_mv.mv_setup))
	sh_mv.mv_setup(cmdline_p);

	plat_smp_setup();
	}

	/* 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)
	{
	return sh_mv.mv_mode_pins() & pin;
	}

	static const char *cpu_name[] = {
	[CPU_SH7201] = "SH7201",
	[CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263",
	[CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
	[CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706",
	[CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708",
	[CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710",
	[CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720",
	[CPU_SH7721] = "SH7721", [CPU_SH7729] = "SH7729",
	[CPU_SH7750] = "SH7750", [CPU_SH7750S] = "SH7750S",
	[CPU_SH7750R] = "SH7750R", [CPU_SH7751] = "SH7751",
	[CPU_SH7751R] = "SH7751R", [CPU_SH7760] = "SH7760",
	[CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
	[CPU_SH7763] = "SH7763", [CPU_SH7770] = "SH7770",
	[CPU_SH7780] = "SH7780", [CPU_SH7781] = "SH7781",
	[CPU_SH7343] = "SH7343", [CPU_SH7785] = "SH7785",
	[CPU_SH7786] = "SH7786", [CPU_SH7757] = "SH7757",
	[CPU_SH7722] = "SH7722", [CPU_SHX3] = "SH-X3",
	[CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103",
	[CPU_MXG] = "MX-G", [CPU_SH7723] = "SH7723",
	[CPU_SH7366] = "SH7366", [CPU_SH7724] = "SH7724",
	[CPU_SH_NONE] = "Unknown"
	};

	const char get_cpu_subtype(struct sh_cpuinfo c)
	{
	return cpu_name[c->type];
	}
	EXPORT_SYMBOL(get_cpu_subtype);

	#ifdef CONFIG_PROC_FS
	/* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
	static const char *cpu_flags[] = {
	"none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
	"ptea", "llsc", "l2", "op32", "pteaex", NULL
	};

	static void show_cpuflags(struct seq_file m, struct sh_cpuinfo c)
	{
	unsigned long i;

	seq_printf(m, "cpu flags\t:");

	if (!c->flags) {
	seq_printf(m, " %s\n", cpu_flags[0]);
	return;
	}

	for (i = 0; cpu_flags[i]; i++)
	if ((c->flags & (1 << i)))
	seq_printf(m, " %s", cpu_flags[i+1]);

	seq_printf(m, "\n");
	}

	static void show_cacheinfo(struct seq_file m, const char type,
	struct cache_info info)
	{
	unsigned int cache_size;

	cache_size = info.ways * info.sets * info.linesz;

	seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
	type, cache_size >> 10, info.ways);
	}

	/*
	* Get CPU information for use by the procfs.
	*/
	static int show_cpuinfo(struct seq_file m, void v)
	{
	struct sh_cpuinfo *c = v;
	unsigned int cpu = c - cpu_data;

	if (!cpu_online(cpu))
	return 0;

	if (cpu == 0)
	seq_printf(m, "machine\t\t: %s\n", get_system_type());
	else
	seq_printf(m, "\n");

	seq_printf(m, "processor\t: %d\n", cpu);
	seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
	seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
	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);

	show_cpuflags(m, c);

	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.
	*/
	if (c->icache.flags & SH_CACHE_COMBINED) {
	seq_printf(m, "unified\n");
	show_cacheinfo(m, "cache", c->icache);
	} else {
	seq_printf(m, "split (harvard)\n");
	show_cacheinfo(m, "icache", c->icache);
	show_cacheinfo(m, "dcache", c->dcache);
	}

	/* Optional secondary cache */
	if (c->flags & CPU_HAS_L2_CACHE)
	show_cacheinfo(m, "scache", c->scache);

	seq_printf(m, "address sizes\t: %u bits physical\n", c->phys_bits);

	seq_printf(m, "bogomips\t: %lu.%02lu\n",
	c->loops_per_jiffy/(500000/HZ),
	(c->loops_per_jiffy/(5000/HZ)) % 100);

	return 0;
	}

	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)
	{
	}
	const struct seq_operations cpuinfo_op = {
	.start = c_start,
	.next = c_next,
	.stop = c_stop,
	.show = show_cpuinfo,
	};
	#endif /* CONFIG_PROC_FS */