[deliverable/linux.git] / arch / sh / kernel / setup.c

/*
 * arch/sh/kernel/setup.c
 *
 * This file handles the architecture-dependent parts of initialization
 *
 *  Copyright (C) 1999  Niibe Yutaka
 *  Copyright (C) 2002 - 2007 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 <asm/uaccess.h>
#include <asm/io.h>
#include <asm/page.h>
#include <asm/sections.h>
#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/clock.h>
#include <asm/mmu_context.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,
		.loops_per_jiffy	= 10000000,
	},
};
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", };

#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,
};

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

static int __init early_parse_mem(char *p)
{
	unsigned long size;

	memory_start = (unsigned long)__va(__MEMORY_START);
	size = memparse(p, &p);

	if (size > __MEMORY_SIZE) {
		static char msg[] __initdata = KERN_ERR
			"Using mem= to increase the size of kernel memory "
			"is not allowed.\n"
			"  Recompile the kernel with the correct value for "
			"CONFIG_MEMORY_SIZE.\n";
		printk(msg);
		return 0;
	}

	memory_end = memory_start + size;

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

/*
 * Register fully available low RAM pages with the bootmem allocator.
 */
static void __init register_bootmem_low_pages(void)
{
	unsigned long curr_pfn, last_pfn, pages;

	/*
	 * We are rounding up the start address of usable memory:
	 */
	curr_pfn = PFN_UP(__MEMORY_START);

	/*
	 * ... and at the end of the usable range downwards:
	 */
	last_pfn = PFN_DOWN(__pa(memory_end));

	if (last_pfn > max_low_pfn)
		last_pfn = max_low_pfn;

	pages = last_pfn - curr_pfn;
	free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
}

#ifdef CONFIG_KEXEC
static void __init reserve_crashkernel(void)
{
	unsigned long long free_mem;
	unsigned long long crash_size, crash_base;
	int ret;

	free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT;

	ret = parse_crashkernel(boot_command_line, free_mem,
			&crash_size, &crash_base);
	if (ret == 0 && crash_size) {
		if (crash_base > 0) {
			printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
					"for crashkernel (System RAM: %ldMB)\n",
					(unsigned long)(crash_size >> 20),
					(unsigned long)(crash_base >> 20),
					(unsigned long)(free_mem >> 20));
			crashk_res.start = crash_base;
			crashk_res.end   = crash_base + crash_size - 1;
			reserve_bootmem(crash_base, crash_size);
		} else
			printk(KERN_INFO "crashkernel reservation failed - "
					"you have to specify a base address\n");
	}
}
#else
static inline void __init reserve_crashkernel(void)
{}
#endif

void __init setup_bootmem_allocator(unsigned long free_pfn)
{
	unsigned long bootmap_size;

	/*
	 * Find a proper area for the bootmem bitmap. After this
	 * bootstrap step all allocations (until the page allocator
	 * is intact) must be done via bootmem_alloc().
	 */
	bootmap_size = init_bootmem_node(NODE_DATA(0), free_pfn,
					 min_low_pfn, max_low_pfn);

	add_active_range(0, min_low_pfn, max_low_pfn);
	register_bootmem_low_pages();

	node_set_online(0);

	/*
	 * 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.
	 */
	reserve_bootmem(__MEMORY_START+PAGE_SIZE,
		(PFN_PHYS(free_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START);

	/*
	 * reserve physical page 0 - it's a special BIOS page on many boxes,
	 * enabling clean reboots, SMP operation, laptop functions.
	 */
	reserve_bootmem(__MEMORY_START, PAGE_SIZE);

	sparse_memory_present_with_active_regions(0);

#ifdef CONFIG_BLK_DEV_INITRD
	ROOT_DEV = Root_RAM0;

	if (LOADER_TYPE && INITRD_START) {
		if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
			reserve_bootmem(INITRD_START + __MEMORY_START,
					INITRD_SIZE);
			initrd_start = INITRD_START + PAGE_OFFSET +
					__MEMORY_START;
			initrd_end = initrd_start + INITRD_SIZE;
		} else {
			printk("initrd extends beyond end of memory "
			    "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
				    INITRD_START + INITRD_SIZE,
				    max_low_pfn << PAGE_SHIFT);
			initrd_start = 0;
		}
	}
#endif

	reserve_crashkernel();
}

#ifndef CONFIG_NEED_MULTIPLE_NODES
static void __init setup_memory(void)
{
	unsigned long start_pfn;

	/*
	 * Partially used pages are not usable - thus
	 * we are rounding upwards:
	 */
	start_pfn = PFN_UP(__pa(_end));
	setup_bootmem_allocator(start_pfn);
}
#else
extern void __init setup_memory(void);
#endif

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

	ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);

#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;

	memory_start = (unsigned long)__va(__MEMORY_START);
	if (!memory_end)
		memory_end = memory_start + __MEMORY_SIZE;

#ifdef CONFIG_CMDLINE_BOOL
	strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
#else
	strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
#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();

	sh_mv_setup();

	/*
	 * Find the highest page frame number we have available
	 */
	max_pfn = PFN_DOWN(__pa(memory_end));

	/*
	 * Determine low and high memory ranges:
	 */
	max_low_pfn = max_pfn;
	min_low_pfn = __MEMORY_START >> PAGE_SHIFT;

	nodes_clear(node_online_map);

	/* Setup bootmem with available RAM */
	setup_memory();
	sparse_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);

	paging_init();

#ifdef CONFIG_SMP
	plat_smp_setup();
#endif
}

static const char *cpu_name[] = {
	[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_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_SH7770]	= "SH7770",	[CPU_SH7780]	= "SH7780",
	[CPU_SH7781]	= "SH7781",	[CPU_SH7343]	= "SH7343",
	[CPU_SH7785]	= "SH7785",	[CPU_SH7722]	= "SH7722",
	[CPU_SHX3]	= "SH-X3",
	[CPU_SH5_101]	= "SH5-101",	[CPU_SH5_103]	= "SH5-103",
	[CPU_SH_NONE]	= "Unknown"
};

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

#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", 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());

	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));

	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, "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)
{
}
struct seq_operations cpuinfo_op = {
	.start	= c_start,
	.next	= c_next,
	.stop	= c_stop,
	.show	= show_cpuinfo,
};
#endif /* CONFIG_PROC_FS */
Commit	Line	Data
711fa809	1	/*
11c19656	2	* arch/sh/kernel/setup.c
1da177e4	3	*
1da177e4	4	* This file handles the architecture-dependent parts of initialization
11c19656 PM	5	*
11c19656 PM	6	* Copyright (C) 1999 Niibe Yutaka
01066625	7	* Copyright (C) 2002 - 2007 Paul Mundt
1da177e4	8	*/
894673ee	9	#include <linux/screen_info.h>
1da177e4 LT	10	#include <linux/ioport.h>
	11	#include <linux/init.h>
	12	#include <linux/initrd.h>
	13	#include <linux/bootmem.h>
	14	#include <linux/console.h>
	15	#include <linux/seq_file.h>
	16	#include <linux/root_dev.h>
	17	#include <linux/utsname.h>
01066625	18	#include <linux/nodemask.h>
1da177e4	19	#include <linux/cpu.h>
22a9835c	20	#include <linux/pfn.h>
711fa809	21	#include <linux/fs.h>
01066625	22	#include <linux/mm.h>
4d5ade5b	23	#include <linux/kexec.h>
98d877c4	24	#include <linux/module.h>
0016a126	25	#include <linux/smp.h>
1da177e4 LT	26	#include <asm/uaccess.h>
1da177e4 LT	27	#include <asm/io.h>
7a302a96	28	#include <asm/page.h>
1da177e4 LT	29	#include <asm/sections.h>
	30	#include <asm/irq.h>
	31	#include <asm/setup.h>
de02797a	32	#include <asm/clock.h>
01066625	33	#include <asm/mmu_context.h>
1da177e4	34
1da177e4 LT	35	/*
	36	* Initialize loops_per_jiffy as 10000000 (1000MIPS).
	37	* This value will be used at the very early stage of serial setup.
	38	* The bigger value means no problem.
	39	*/
2d4a73d5 PM	40	struct sh_cpuinfo cpu_data[NR_CPUS] __read_mostly = {
	41	[0] = {
	42	.type = CPU_SH_NONE,
	43	.loops_per_jiffy = 10000000,
	44	},
	45	};
	46	EXPORT_SYMBOL(cpu_data);
82f81f47 PM	47
	48	/*
	49	* The machine vector. First entry in .machvec.init, or clobbered by
	50	* sh_mv= on the command line, prior to .machvec.init teardown.
	51	*/
fd8f20e8	52	struct sh_machine_vector sh_mv = { .mv_name = "generic", };
82f81f47	53
2c7834a6	54	#ifdef CONFIG_VT
1da177e4	55	struct screen_info screen_info;
2c7834a6	56	#endif
1da177e4	57
1da177e4 LT	58	extern int root_mountflags;
1da177e4 LT	59
65463b73	60	#define RAMDISK_IMAGE_START_MASK 0x07FF
1da177e4	61	#define RAMDISK_PROMPT_FLAG 0x8000
65463b73	62	#define RAMDISK_LOAD_FLAG 0x4000
1da177e4	63
53c82622	64	static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
1da177e4	65
69d1ef4c PM	66	static struct resource code_resource = {
	67	.name = "Kernel code",
	68	.flags = IORESOURCE_BUSY \| IORESOURCE_MEM,
	69	};
	70
	71	static struct resource data_resource = {
	72	.name = "Kernel data",
	73	.flags = IORESOURCE_BUSY \| IORESOURCE_MEM,
	74	};
1da177e4	75
98d877c4 PM	76	unsigned long memory_start;
98d877c4 PM	77	EXPORT_SYMBOL(memory_start);
7e5186ea	78	unsigned long memory_end = 0;
98d877c4	79	EXPORT_SYMBOL(memory_end);
1da177e4	80
9655ad03	81	static int __init early_parse_mem(char *p)
1da177e4	82	{
9655ad03	83	unsigned long size;
1da177e4	84
d02b08f6	85	memory_start = (unsigned long)__va(__MEMORY_START);
9655ad03	86	size = memparse(p, &p);
80a68a43 SM	87
	88	if (size > __MEMORY_SIZE) {
	89	static char msg[] __initdata = KERN_ERR
	90	"Using mem= to increase the size of kernel memory "
	91	"is not allowed.\n"
	92	" Recompile the kernel with the correct value for "
	93	"CONFIG_MEMORY_SIZE.\n";
	94	printk(msg);
	95	return 0;
	96	}
	97
9655ad03	98	memory_end = memory_start + size;
2c7834a6	99
1da177e4 LT	100	return 0;
1da177e4 LT	101	}
9655ad03	102	early_param("mem", early_parse_mem);
1da177e4	103
01066625 PM	104	/*
	105	* Register fully available low RAM pages with the bootmem allocator.
	106	*/
	107	static void __init register_bootmem_low_pages(void)
1da177e4	108	{
01066625	109	unsigned long curr_pfn, last_pfn, pages;
b641fe01	110
1da177e4	111	/*
01066625	112	* We are rounding up the start address of usable memory:
1da177e4	113	*/
01066625	114	curr_pfn = PFN_UP(__MEMORY_START);
1da177e4 LT	115
1da177e4 LT	116	/*
01066625	117	* ... and at the end of the usable range downwards:
1da177e4	118	*/
01066625	119	last_pfn = PFN_DOWN(__pa(memory_end));
1da177e4	120
01066625 PM	121	if (last_pfn > max_low_pfn)
	122	last_pfn = max_low_pfn;
	123
	124	pages = last_pfn - curr_pfn;
	125	free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
	126	}
	127
7d7712a3 BW	128	#ifdef CONFIG_KEXEC
	129	static void __init reserve_crashkernel(void)
	130	{
	131	unsigned long long free_mem;
	132	unsigned long long crash_size, crash_base;
	133	int ret;
	134
	135	free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT;
	136
	137	ret = parse_crashkernel(boot_command_line, free_mem,
	138	&crash_size, &crash_base);
	139	if (ret == 0 && crash_size) {
	140	if (crash_base > 0) {
	141	printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
	142	"for crashkernel (System RAM: %ldMB)\n",
	143	(unsigned long)(crash_size >> 20),
	144	(unsigned long)(crash_base >> 20),
	145	(unsigned long)(free_mem >> 20));
	146	crashk_res.start = crash_base;
	147	crashk_res.end = crash_base + crash_size - 1;
	148	reserve_bootmem(crash_base, crash_size);
	149	} else
	150	printk(KERN_INFO "crashkernel reservation failed - "
	151	"you have to specify a base address\n");
	152	}
	153	}
	154	#else
	155	static inline void __init reserve_crashkernel(void)
	156	{}
	157	#endif
	158
2826fa61	159	void __init setup_bootmem_allocator(unsigned long free_pfn)
01066625 PM	160	{
01066625 PM	161	unsigned long bootmap_size;
1da177e4 LT	162
	163	/*
	164	* Find a proper area for the bootmem bitmap. After this
	165	* bootstrap step all allocations (until the page allocator
	166	* is intact) must be done via bootmem_alloc().
	167	*/
2826fa61	168	bootmap_size = init_bootmem_node(NODE_DATA(0), free_pfn,
01066625	169	min_low_pfn, max_low_pfn);
1da177e4	170
dfbb9042	171	add_active_range(0, min_low_pfn, max_low_pfn);
01066625	172	register_bootmem_low_pages();
1da177e4	173
01066625	174	node_set_online(0);
b641fe01	175
1da177e4 LT	176	/*
	177	* Reserve the kernel text and
	178	* Reserve the bootmem bitmap. We do this in two steps (first step
	179	* was init_bootmem()), because this catches the (definitely buggy)
	180	* case of us accidentally initializing the bootmem allocator with
	181	* an invalid RAM area.
	182	*/
01066625	183	reserve_bootmem(__MEMORY_START+PAGE_SIZE,
2826fa61	184	(PFN_PHYS(free_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START);
1da177e4 LT	185
	186	/*
	187	* reserve physical page 0 - it's a special BIOS page on many boxes,
	188	* enabling clean reboots, SMP operation, laptop functions.
	189	*/
01066625	190	reserve_bootmem(__MEMORY_START, PAGE_SIZE);
1da177e4	191
2826fa61 PM	192	sparse_memory_present_with_active_regions(0);
2826fa61 PM	193
1da177e4	194	#ifdef CONFIG_BLK_DEV_INITRD
3f9654f0	195	ROOT_DEV = Root_RAM0;
1da177e4 LT	196
	197	if (LOADER_TYPE && INITRD_START) {
	198	if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
01066625 PM	199	reserve_bootmem(INITRD_START + __MEMORY_START,
01066625 PM	200	INITRD_SIZE);
41504c39 PM	201	initrd_start = INITRD_START + PAGE_OFFSET +
41504c39 PM	202	__MEMORY_START;
1da177e4 LT	203	initrd_end = initrd_start + INITRD_SIZE;
	204	} else {
	205	printk("initrd extends beyond end of memory "
	206	"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
	207	INITRD_START + INITRD_SIZE,
	208	max_low_pfn << PAGE_SHIFT);
	209	initrd_start = 0;
	210	}
	211	}
	212	#endif
7d7712a3 BW	213
7d7712a3 BW	214	reserve_crashkernel();
01066625 PM	215	}
	216
	217	#ifndef CONFIG_NEED_MULTIPLE_NODES
	218	static void __init setup_memory(void)
	219	{
	220	unsigned long start_pfn;
	221
	222	/*
	223	* Partially used pages are not usable - thus
	224	* we are rounding upwards:
	225	*/
	226	start_pfn = PFN_UP(__pa(_end));
	227	setup_bootmem_allocator(start_pfn);
	228	}
	229	#else
	230	extern void __init setup_memory(void);
	231	#endif
	232
	233	void __init setup_arch(char **cmdline_p)
	234	{
	235	enable_mmu();
	236
01066625 PM	237	ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
	238
	239	#ifdef CONFIG_BLK_DEV_RAM
	240	rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
	241	rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
	242	rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
	243	#endif
	244
	245	if (!MOUNT_ROOT_RDONLY)
	246	root_mountflags &= ~MS_RDONLY;
	247	init_mm.start_code = (unsigned long) _text;
	248	init_mm.end_code = (unsigned long) _etext;
	249	init_mm.end_data = (unsigned long) _edata;
	250	init_mm.brk = (unsigned long) _end;
	251
	252	code_resource.start = virt_to_phys(_text);
	253	code_resource.end = virt_to_phys(_etext)-1;
	254	data_resource.start = virt_to_phys(_etext);
	255	data_resource.end = virt_to_phys(_edata)-1;
	256
d02b08f6	257	memory_start = (unsigned long)__va(__MEMORY_START);
7e5186ea PM	258	if (!memory_end)
7e5186ea PM	259	memory_end = memory_start + __MEMORY_SIZE;
9655ad03	260
ba36197c PM	261	#ifdef CONFIG_CMDLINE_BOOL
	262	strlcpy(command_line, CONFIG_CMDLINE, sizeof(command_line));
	263	#else
	264	strlcpy(command_line, COMMAND_LINE, sizeof(command_line));
	265	#endif
9655ad03	266
ba36197c PM	267	/* Save unparsed command line copy for /proc/cmdline */
ba36197c PM	268	memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
9655ad03 PM	269	*cmdline_p = command_line;
9655ad03 PM	270
01066625 PM	271	parse_early_param();
01066625 PM	272
9655ad03	273	sh_mv_setup();
01066625 PM	274
	275	/*
	276	* Find the highest page frame number we have available
	277	*/
	278	max_pfn = PFN_DOWN(__pa(memory_end));
	279
	280	/*
	281	* Determine low and high memory ranges:
	282	*/
	283	max_low_pfn = max_pfn;
	284	min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
	285
	286	nodes_clear(node_online_map);
dfbb9042 PM	287
dfbb9042 PM	288	/* Setup bootmem with available RAM */
01066625	289	setup_memory();
01066625	290	sparse_init();
1da177e4 LT	291
	292	#ifdef CONFIG_DUMMY_CONSOLE
	293	conswitchp = &dummy_con;
	294	#endif
	295
	296	/* Perform the machine specific initialisation */
2c7834a6 PM	297	if (likely(sh_mv.mv_setup))
2c7834a6 PM	298	sh_mv.mv_setup(cmdline_p);
1da177e4	299
dfbb9042	300	paging_init();
0016a126 PM	301
	302	#ifdef CONFIG_SMP
	303	plat_smp_setup();
	304	#endif
dfbb9042	305	}
1da177e4	306
1da177e4	307	static const char *cpu_name[] = {
a8f67f4b	308	[CPU_SH7203] = "SH7203", [CPU_SH7263] = "SH7263",
b552c7e8	309	[CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
e5723e0e PM	310	[CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706",
	311	[CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708",
	312	[CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710",
3ea6bc3d	313	[CPU_SH7712] = "SH7712", [CPU_SH7720] = "SH7720",
e5723e0e PM	314	[CPU_SH7729] = "SH7729", [CPU_SH7750] = "SH7750",
	315	[CPU_SH7750S] = "SH7750S", [CPU_SH7750R] = "SH7750R",
	316	[CPU_SH7751] = "SH7751", [CPU_SH7751R] = "SH7751R",
870e8a24	317	[CPU_SH7760] = "SH7760",
e5723e0e PM	318	[CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
	319	[CPU_SH7770] = "SH7770", [CPU_SH7780] = "SH7780",
	320	[CPU_SH7781] = "SH7781", [CPU_SH7343] = "SH7343",
41504c39	321	[CPU_SH7785] = "SH7785", [CPU_SH7722] = "SH7722",
c2672f62 PM	322	[CPU_SHX3] = "SH-X3",
	323	[CPU_SH5_101] = "SH5-101", [CPU_SH5_103] = "SH5-103",
	324	[CPU_SH_NONE] = "Unknown"
1da177e4 LT	325	};
1da177e4 LT	326
11c19656	327	const char get_cpu_subtype(struct sh_cpuinfo c)
1da177e4	328	{
11c19656	329	return cpu_name[c->type];
1da177e4 LT	330	}
	331
	332	#ifdef CONFIG_PROC_FS
2220d164	333	/* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
1da177e4	334	static const char *cpu_flags[] = {
2220d164	335	"none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
074f98df	336	"ptea", "llsc", "l2", "op32", NULL
1da177e4 LT	337	};
1da177e4 LT	338
11c19656	339	static void show_cpuflags(struct seq_file m, struct sh_cpuinfo c)
1da177e4 LT	340	{
	341	unsigned long i;
	342
	343	seq_printf(m, "cpu flags\t:");
	344
11c19656	345	if (!c->flags) {
1da177e4 LT	346	seq_printf(m, " %s\n", cpu_flags[0]);
	347	return;
	348	}
	349
de02797a	350	for (i = 0; cpu_flags[i]; i++)
11c19656	351	if ((c->flags & (1 << i)))
1da177e4 LT	352	seq_printf(m, " %s", cpu_flags[i+1]);
	353
	354	seq_printf(m, "\n");
	355	}
	356
2c7834a6 PM	357	static void show_cacheinfo(struct seq_file m, const char type,
2c7834a6 PM	358	struct cache_info info)
1da177e4 LT	359	{
	360	unsigned int cache_size;
	361
	362	cache_size = info.ways * info.sets * info.linesz;
	363
de02797a PM	364	seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
de02797a PM	365	type, cache_size >> 10, info.ways);
1da177e4 LT	366	}
	367
	368	/*
	369	* Get CPU information for use by the procfs.
	370	*/
	371	static int show_cpuinfo(struct seq_file m, void v)
	372	{
11c19656 PM	373	struct sh_cpuinfo *c = v;
	374	unsigned int cpu = c - cpu_data;
	375
	376	if (!cpu_online(cpu))
	377	return 0;
1da177e4	378
11c19656	379	if (cpu == 0)
1da177e4 LT	380	seq_printf(m, "machine\t\t: %s\n", get_system_type());
	381
	382	seq_printf(m, "processor\t: %d\n", cpu);
96b644bd	383	seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
11c19656	384	seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
1da177e4	385
11c19656	386	show_cpuflags(m, c);
1da177e4 LT	387
	388	seq_printf(m, "cache type\t: ");
	389
	390	/*
	391	* Check for what type of cache we have, we support both the
	392	* unified cache on the SH-2 and SH-3, as well as the harvard
	393	* style cache on the SH-4.
	394	*/
11c19656	395	if (c->icache.flags & SH_CACHE_COMBINED) {
1da177e4	396	seq_printf(m, "unified\n");
11c19656	397	show_cacheinfo(m, "cache", c->icache);
1da177e4 LT	398	} else {
1da177e4 LT	399	seq_printf(m, "split (harvard)\n");
11c19656 PM	400	show_cacheinfo(m, "icache", c->icache);
11c19656 PM	401	show_cacheinfo(m, "dcache", c->dcache);
1da177e4 LT	402	}
1da177e4 LT	403
72c35543	404	/* Optional secondary cache */
11c19656 PM	405	if (c->flags & CPU_HAS_L2_CACHE)
11c19656 PM	406	show_cacheinfo(m, "scache", c->scache);
72c35543	407
1da177e4	408	seq_printf(m, "bogomips\t: %lu.%02lu\n",
11c19656 PM	409	c->loops_per_jiffy/(500000/HZ),
11c19656 PM	410	(c->loops_per_jiffy/(5000/HZ)) % 100);
1da177e4	411
db62e5bd	412	return 0;
1da177e4 LT	413	}
1da177e4 LT	414
1da177e4 LT	415	static void c_start(struct seq_file m, loff_t *pos)
	416	{
	417	return pos < NR_CPUS ? cpu_data + pos : NULL;
	418	}
	419	static void c_next(struct seq_file m, void v, loff_t pos)
	420	{
	421	++*pos;
	422	return c_start(m, pos);
	423	}
	424	static void c_stop(struct seq_file m, void v)
	425	{
	426	}
	427	struct seq_operations cpuinfo_op = {
	428	.start = c_start,
	429	.next = c_next,
	430	.stop = c_stop,
	431	.show = show_cpuinfo,
	432	};
	433	#endif /* CONFIG_PROC_FS */