[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 <asm/uaccess.h>
#include <asm/io.h>
#include <asm/sections.h>
#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/clock.h>
#include <asm/mmu_context.h>

extern void * __rd_start, * __rd_end;

/*
 * Machine setup..
 */

/*
 * 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 boot_cpu_data = { CPU_SH_NONE, 10000000, };
#ifdef CONFIG_VT
struct screen_info screen_info;
#endif

#if defined(CONFIG_SH_UNKNOWN)
struct sh_machine_vector sh_mv;
#endif

extern int root_mountflags;

#define MV_NAME_SIZE 32

static struct sh_machine_vector* __init get_mv_byname(const char* name);

/*
 * This is set up by the setup-routine at boot-time
 */
#define PARAM	((unsigned char *)empty_zero_page)

#define MOUNT_ROOT_RDONLY (*(unsigned long *) (PARAM+0x000))
#define RAMDISK_FLAGS (*(unsigned long *) (PARAM+0x004))
#define ORIG_ROOT_DEV (*(unsigned long *) (PARAM+0x008))
#define LOADER_TYPE (*(unsigned long *) (PARAM+0x00c))
#define INITRD_START (*(unsigned long *) (PARAM+0x010))
#define INITRD_SIZE (*(unsigned long *) (PARAM+0x014))
/* ... */
#define COMMAND_LINE ((char *) (PARAM+0x100))

#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", };
static struct resource data_resource = { .name = "Kernel data", };

unsigned long memory_start, memory_end;

static inline void parse_cmdline (char ** cmdline_p, char mv_name[MV_NAME_SIZE],
				  struct sh_machine_vector** mvp,
				  unsigned long *mv_io_base)
{
	char c = ' ', *to = command_line, *from = COMMAND_LINE;
	int len = 0;

	/* Save unparsed command line copy for /proc/cmdline */
	memcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
	boot_command_line[COMMAND_LINE_SIZE-1] = '\0';

	memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
	memory_end = memory_start + __MEMORY_SIZE;

	for (;;) {
		/*
		 * "mem=XXX[kKmM]" defines a size of memory.
		 */
		if (c == ' ' && !memcmp(from, "mem=", 4)) {
			if (to != command_line)
				to--;
			{
				unsigned long mem_size;

				mem_size = memparse(from+4, &from);
				memory_end = memory_start + mem_size;
			}
		}

		if (c == ' ' && !memcmp(from, "sh_mv=", 6)) {
			char* mv_end;
			char* mv_comma;
			int mv_len;
			if (to != command_line)
				to--;
			from += 6;
			mv_end = strchr(from, ' ');
			if (mv_end == NULL)
				mv_end = from + strlen(from);

			mv_comma = strchr(from, ',');
			if ((mv_comma != NULL) && (mv_comma < mv_end)) {
				int ints[3];
				get_options(mv_comma+1, ARRAY_SIZE(ints), ints);
				*mv_io_base = ints[1];
				mv_len = mv_comma - from;
			} else {
				mv_len = mv_end - from;
			}
			if (mv_len > (MV_NAME_SIZE-1))
				mv_len = MV_NAME_SIZE-1;
			memcpy(mv_name, from, mv_len);
			mv_name[mv_len] = '\0';
			from = mv_end;

			*mvp = get_mv_byname(mv_name);
		}

		c = *(from++);
		if (!c)
			break;
		if (COMMAND_LINE_SIZE <= ++len)
			break;
		*(to++) = c;
	}
	*to = '\0';
	*cmdline_p = command_line;
}

static int __init sh_mv_setup(char **cmdline_p)
{
#ifdef CONFIG_SH_UNKNOWN
	extern struct sh_machine_vector mv_unknown;
#endif
	struct sh_machine_vector *mv = NULL;
	char mv_name[MV_NAME_SIZE] = "";
	unsigned long mv_io_base = 0;

	parse_cmdline(cmdline_p, mv_name, &mv, &mv_io_base);

#ifdef CONFIG_SH_UNKNOWN
	if (mv == NULL) {
		mv = &mv_unknown;
		if (*mv_name != '\0') {
			printk("Warning: Unsupported machine %s, using unknown\n",
			       mv_name);
		}
	}
	sh_mv = *mv;
#endif

	/*
	 * Manually walk the vec, fill in anything that the board hasn't yet
	 * by hand, wrapping to the generic implementation.
	 */
#define mv_set(elem) do { \
	if (!sh_mv.mv_##elem) \
		sh_mv.mv_##elem = generic_##elem; \
} while (0)

	mv_set(inb);	mv_set(inw);	mv_set(inl);
	mv_set(outb);	mv_set(outw);	mv_set(outl);

	mv_set(inb_p);	mv_set(inw_p);	mv_set(inl_p);
	mv_set(outb_p);	mv_set(outw_p);	mv_set(outl_p);

	mv_set(insb);	mv_set(insw);	mv_set(insl);
	mv_set(outsb);	mv_set(outsw);	mv_set(outsl);

	mv_set(readb);	mv_set(readw);	mv_set(readl);
	mv_set(writeb);	mv_set(writew);	mv_set(writel);

	mv_set(ioport_map);
	mv_set(ioport_unmap);
	mv_set(irq_demux);

#ifdef CONFIG_SH_UNKNOWN
	__set_io_port_base(mv_io_base);
#endif

	if (!sh_mv.mv_nr_irqs)
		sh_mv.mv_nr_irqs = NR_IRQS;

	return 0;
}

/*
 * 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));
}

void __init setup_bootmem_allocator(unsigned long start_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), start_pfn,
					 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(start_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);

#ifdef CONFIG_BLK_DEV_INITRD
	ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
	if (&__rd_start != &__rd_end) {
		LOADER_TYPE = 1;
		INITRD_START = PHYSADDR((unsigned long)&__rd_start) -
					__MEMORY_START;
		INITRD_SIZE = (unsigned long)&__rd_end -
			      (unsigned long)&__rd_start;
	}

	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
}

#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();

#ifdef CONFIG_CMDLINE_BOOL
	strcpy(COMMAND_LINE, CONFIG_CMDLINE);
#endif

	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;

	parse_early_param();

	sh_mv_setup(cmdline_p);

	/*
	 * 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_memory();
	paging_init();
	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);
}

struct sh_machine_vector* __init get_mv_byname(const char* name)
{
	extern long __machvec_start, __machvec_end;
	struct sh_machine_vector *all_vecs =
		(struct sh_machine_vector *)&__machvec_start;

	int i, n = ((unsigned long)&__machvec_end
		    - (unsigned long)&__machvec_start)/
		sizeof(struct sh_machine_vector);

	for (i = 0; i < n; ++i) {
		struct sh_machine_vector *mv = &all_vecs[i];
		if (mv == NULL)
			continue;
		if (strcasecmp(name, get_system_type()) == 0) {
			return mv;
		}
	}
	return NULL;
}

static struct cpu cpu[NR_CPUS];

static int __init topology_init(void)
{
	int cpu_id;

	for_each_possible_cpu(cpu_id)
		register_cpu(&cpu[cpu_id], cpu_id);

	return 0;
}

subsys_initcall(topology_init);

static const char *cpu_name[] = {
	[CPU_SH7206]	= "SH7206",	[CPU_SH7619]	= "SH7619",
	[CPU_SH7604]	= "SH7604",	[CPU_SH7300]	= "SH7300",
	[CPU_SH7705]	= "SH7705",	[CPU_SH7706]	= "SH7706",
	[CPU_SH7707]	= "SH7707",	[CPU_SH7708]	= "SH7708",
	[CPU_SH7709]	= "SH7709",	[CPU_SH7710]	= "SH7710",
	[CPU_SH7712]	= "SH7712",
	[CPU_SH7729]	= "SH7729",	[CPU_SH7750]	= "SH7750",
	[CPU_SH7750S]	= "SH7750S",	[CPU_SH7750R]	= "SH7750R",
	[CPU_SH7751]	= "SH7751",	[CPU_SH7751R]	= "SH7751R",
	[CPU_SH7760]	= "SH7760",	[CPU_SH73180]	= "SH73180",
	[CPU_ST40RA]	= "ST40RA",	[CPU_ST40GX1]	= "ST40GX1",
	[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_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", 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 show_clocks(m);
}

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>
1da177e4 LT	23	#include <asm/uaccess.h>
1da177e4 LT	24	#include <asm/io.h>
1da177e4 LT	25	#include <asm/sections.h>
	26	#include <asm/irq.h>
	27	#include <asm/setup.h>
de02797a	28	#include <asm/clock.h>
01066625	29	#include <asm/mmu_context.h>
1da177e4	30
1da177e4	31	extern void * __rd_start, * __rd_end;
fa5da2f7	32
1da177e4 LT	33	/*
	34	* Machine setup..
	35	*/
	36
	37	/*
	38	* Initialize loops_per_jiffy as 10000000 (1000MIPS).
	39	* This value will be used at the very early stage of serial setup.
	40	* The bigger value means no problem.
	41	*/
de02797a	42	struct sh_cpuinfo boot_cpu_data = { CPU_SH_NONE, 10000000, };
2c7834a6	43	#ifdef CONFIG_VT
1da177e4	44	struct screen_info screen_info;
2c7834a6	45	#endif
1da177e4 LT	46
	47	#if defined(CONFIG_SH_UNKNOWN)
	48	struct sh_machine_vector sh_mv;
	49	#endif
	50
1da177e4 LT	51	extern int root_mountflags;
	52
	53	#define MV_NAME_SIZE 32
	54
	55	static struct sh_machine_vector* __init get_mv_byname(const char* name);
	56
	57	/*
	58	* This is set up by the setup-routine at boot-time
	59	*/
	60	#define PARAM ((unsigned char *)empty_zero_page)
	61
	62	#define MOUNT_ROOT_RDONLY ((unsigned long ) (PARAM+0x000))
	63	#define RAMDISK_FLAGS ((unsigned long ) (PARAM+0x004))
	64	#define ORIG_ROOT_DEV ((unsigned long ) (PARAM+0x008))
	65	#define LOADER_TYPE ((unsigned long ) (PARAM+0x00c))
	66	#define INITRD_START ((unsigned long ) (PARAM+0x010))
	67	#define INITRD_SIZE ((unsigned long ) (PARAM+0x014))
	68	/* ... */
	69	#define COMMAND_LINE ((char *) (PARAM+0x100))
	70
65463b73	71	#define RAMDISK_IMAGE_START_MASK 0x07FF
1da177e4	72	#define RAMDISK_PROMPT_FLAG 0x8000
65463b73	73	#define RAMDISK_LOAD_FLAG 0x4000
1da177e4	74
53c82622	75	static char __initdata command_line[COMMAND_LINE_SIZE] = { 0, };
1da177e4	76
2c7834a6 PM	77	static struct resource code_resource = { .name = "Kernel code", };
2c7834a6 PM	78	static struct resource data_resource = { .name = "Kernel data", };
1da177e4 LT	79
	80	unsigned long memory_start, memory_end;
	81
	82	static inline void parse_cmdline (char ** cmdline_p, char mv_name[MV_NAME_SIZE],
	83	struct sh_machine_vector** mvp,
b641fe01	84	unsigned long *mv_io_base)
1da177e4 LT	85	{
	86	char c = ' ', to = command_line, from = COMMAND_LINE;
	87	int len = 0;
	88
	89	/* Save unparsed command line copy for /proc/cmdline */
53c82622 ABL	90	memcpy(boot_command_line, COMMAND_LINE, COMMAND_LINE_SIZE);
53c82622 ABL	91	boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
1da177e4 LT	92
	93	memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
	94	memory_end = memory_start + __MEMORY_SIZE;
	95
	96	for (;;) {
	97	/*
	98	* "mem=XXX[kKmM]" defines a size of memory.
	99	*/
	100	if (c == ' ' && !memcmp(from, "mem=", 4)) {
	101	if (to != command_line)
	102	to--;
	103	{
	104	unsigned long mem_size;
	105
	106	mem_size = memparse(from+4, &from);
	107	memory_end = memory_start + mem_size;
	108	}
	109	}
a80fd21e	110
1da177e4 LT	111	if (c == ' ' && !memcmp(from, "sh_mv=", 6)) {
	112	char* mv_end;
	113	char* mv_comma;
	114	int mv_len;
	115	if (to != command_line)
	116	to--;
	117	from += 6;
	118	mv_end = strchr(from, ' ');
	119	if (mv_end == NULL)
	120	mv_end = from + strlen(from);
	121
	122	mv_comma = strchr(from, ',');
	123	if ((mv_comma != NULL) && (mv_comma < mv_end)) {
	124	int ints[3];
	125	get_options(mv_comma+1, ARRAY_SIZE(ints), ints);
	126	*mv_io_base = ints[1];
1da177e4 LT	127	mv_len = mv_comma - from;
	128	} else {
	129	mv_len = mv_end - from;
	130	}
	131	if (mv_len > (MV_NAME_SIZE-1))
	132	mv_len = MV_NAME_SIZE-1;
	133	memcpy(mv_name, from, mv_len);
	134	mv_name[mv_len] = '\0';
	135	from = mv_end;
	136
	137	*mvp = get_mv_byname(mv_name);
	138	}
b641fe01	139
1da177e4 LT	140	c = *(from++);
	141	if (!c)
	142	break;
	143	if (COMMAND_LINE_SIZE <= ++len)
	144	break;
	145	*(to++) = c;
	146	}
	147	*to = '\0';
	148	*cmdline_p = command_line;
	149	}
	150
	151	static int __init sh_mv_setup(char **cmdline_p)
	152	{
50373c1b	153	#ifdef CONFIG_SH_UNKNOWN
1da177e4 LT	154	extern struct sh_machine_vector mv_unknown;
	155	#endif
	156	struct sh_machine_vector *mv = NULL;
	157	char mv_name[MV_NAME_SIZE] = "";
	158	unsigned long mv_io_base = 0;
1da177e4	159
b641fe01	160	parse_cmdline(cmdline_p, mv_name, &mv, &mv_io_base);
1da177e4	161
50373c1b	162	#ifdef CONFIG_SH_UNKNOWN
1da177e4 LT	163	if (mv == NULL) {
	164	mv = &mv_unknown;
	165	if (*mv_name != '\0') {
	166	printk("Warning: Unsupported machine %s, using unknown\n",
	167	mv_name);
	168	}
	169	}
	170	sh_mv = *mv;
	171	#endif
1da177e4 LT	172
	173	/*
	174	* Manually walk the vec, fill in anything that the board hasn't yet
	175	* by hand, wrapping to the generic implementation.
	176	*/
	177	#define mv_set(elem) do { \
	178	if (!sh_mv.mv_##elem) \
	179	sh_mv.mv_##elem = generic_##elem; \
	180	} while (0)
	181
	182	mv_set(inb); mv_set(inw); mv_set(inl);
	183	mv_set(outb); mv_set(outw); mv_set(outl);
	184
	185	mv_set(inb_p); mv_set(inw_p); mv_set(inl_p);
	186	mv_set(outb_p); mv_set(outw_p); mv_set(outl_p);
	187
	188	mv_set(insb); mv_set(insw); mv_set(insl);
	189	mv_set(outsb); mv_set(outsw); mv_set(outsl);
	190
	191	mv_set(readb); mv_set(readw); mv_set(readl);
	192	mv_set(writeb); mv_set(writew); mv_set(writel);
	193
50373c1b PM	194	mv_set(ioport_map);
50373c1b PM	195	mv_set(ioport_unmap);
1da177e4 LT	196	mv_set(irq_demux);
	197
	198	#ifdef CONFIG_SH_UNKNOWN
	199	__set_io_port_base(mv_io_base);
	200	#endif
	201
2c7834a6 PM	202	if (!sh_mv.mv_nr_irqs)
	203	sh_mv.mv_nr_irqs = NR_IRQS;
	204
1da177e4 LT	205	return 0;
	206	}
	207
01066625 PM	208	/*
	209	* Register fully available low RAM pages with the bootmem allocator.
	210	*/
	211	static void __init register_bootmem_low_pages(void)
1da177e4	212	{
01066625	213	unsigned long curr_pfn, last_pfn, pages;
b641fe01	214
1da177e4	215	/*
01066625	216	* We are rounding up the start address of usable memory:
1da177e4	217	*/
01066625	218	curr_pfn = PFN_UP(__MEMORY_START);
1da177e4 LT	219
1da177e4 LT	220	/*
01066625	221	* ... and at the end of the usable range downwards:
1da177e4	222	*/
01066625	223	last_pfn = PFN_DOWN(__pa(memory_end));
1da177e4	224
01066625 PM	225	if (last_pfn > max_low_pfn)
	226	last_pfn = max_low_pfn;
	227
	228	pages = last_pfn - curr_pfn;
	229	free_bootmem(PFN_PHYS(curr_pfn), PFN_PHYS(pages));
	230	}
	231
	232	void __init setup_bootmem_allocator(unsigned long start_pfn)
	233	{
	234	unsigned long bootmap_size;
1da177e4 LT	235
	236	/*
	237	* Find a proper area for the bootmem bitmap. After this
	238	* bootstrap step all allocations (until the page allocator
	239	* is intact) must be done via bootmem_alloc().
	240	*/
	241	bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
01066625	242	min_low_pfn, max_low_pfn);
1da177e4	243
01066625	244	register_bootmem_low_pages();
1da177e4	245
01066625	246	node_set_online(0);
b641fe01	247
1da177e4 LT	248	/*
	249	* Reserve the kernel text and
	250	* Reserve the bootmem bitmap. We do this in two steps (first step
	251	* was init_bootmem()), because this catches the (definitely buggy)
	252	* case of us accidentally initializing the bootmem allocator with
	253	* an invalid RAM area.
	254	*/
01066625	255	reserve_bootmem(__MEMORY_START+PAGE_SIZE,
1da177e4 LT	256	(PFN_PHYS(start_pfn)+bootmap_size+PAGE_SIZE-1)-__MEMORY_START);
	257
	258	/*
	259	* reserve physical page 0 - it's a special BIOS page on many boxes,
	260	* enabling clean reboots, SMP operation, laptop functions.
	261	*/
01066625	262	reserve_bootmem(__MEMORY_START, PAGE_SIZE);
1da177e4 LT	263
1da177e4 LT	264	#ifdef CONFIG_BLK_DEV_INITRD
65463b73 PM	265	ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
65463b73 PM	266	if (&__rd_start != &__rd_end) {
1da177e4	267	LOADER_TYPE = 1;
41504c39 PM	268	INITRD_START = PHYSADDR((unsigned long)&__rd_start) -
	269	__MEMORY_START;
	270	INITRD_SIZE = (unsigned long)&__rd_end -
	271	(unsigned long)&__rd_start;
65463b73	272	}
1da177e4 LT	273
	274	if (LOADER_TYPE && INITRD_START) {
	275	if (INITRD_START + INITRD_SIZE <= (max_low_pfn << PAGE_SHIFT)) {
01066625 PM	276	reserve_bootmem(INITRD_START + __MEMORY_START,
01066625 PM	277	INITRD_SIZE);
41504c39 PM	278	initrd_start = INITRD_START + PAGE_OFFSET +
41504c39 PM	279	__MEMORY_START;
1da177e4 LT	280	initrd_end = initrd_start + INITRD_SIZE;
	281	} else {
	282	printk("initrd extends beyond end of memory "
	283	"(0x%08lx > 0x%08lx)\ndisabling initrd\n",
	284	INITRD_START + INITRD_SIZE,
	285	max_low_pfn << PAGE_SHIFT);
	286	initrd_start = 0;
	287	}
	288	}
	289	#endif
01066625 PM	290	}
	291
	292	#ifndef CONFIG_NEED_MULTIPLE_NODES
	293	static void __init setup_memory(void)
	294	{
	295	unsigned long start_pfn;
	296
	297	/*
	298	* Partially used pages are not usable - thus
	299	* we are rounding upwards:
	300	*/
	301	start_pfn = PFN_UP(__pa(_end));
	302	setup_bootmem_allocator(start_pfn);
	303	}
	304	#else
	305	extern void __init setup_memory(void);
	306	#endif
	307
	308	void __init setup_arch(char **cmdline_p)
	309	{
	310	enable_mmu();
	311
	312	#ifdef CONFIG_CMDLINE_BOOL
	313	strcpy(COMMAND_LINE, CONFIG_CMDLINE);
	314	#endif
	315
	316	ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
	317
	318	#ifdef CONFIG_BLK_DEV_RAM
	319	rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
	320	rd_prompt = ((RAMDISK_FLAGS & RAMDISK_PROMPT_FLAG) != 0);
	321	rd_doload = ((RAMDISK_FLAGS & RAMDISK_LOAD_FLAG) != 0);
	322	#endif
	323
	324	if (!MOUNT_ROOT_RDONLY)
	325	root_mountflags &= ~MS_RDONLY;
	326	init_mm.start_code = (unsigned long) _text;
	327	init_mm.end_code = (unsigned long) _etext;
	328	init_mm.end_data = (unsigned long) _edata;
	329	init_mm.brk = (unsigned long) _end;
	330
	331	code_resource.start = virt_to_phys(_text);
	332	code_resource.end = virt_to_phys(_etext)-1;
	333	data_resource.start = virt_to_phys(_etext);
	334	data_resource.end = virt_to_phys(_edata)-1;
	335
	336	parse_early_param();
	337
	338	sh_mv_setup(cmdline_p);
	339
	340	/*
	341	* Find the highest page frame number we have available
	342	*/
	343	max_pfn = PFN_DOWN(__pa(memory_end));
	344
	345	/*
	346	* Determine low and high memory ranges:
	347	*/
	348	max_low_pfn = max_pfn;
	349	min_low_pfn = __MEMORY_START >> PAGE_SHIFT;
	350
	351	nodes_clear(node_online_map);
	352	setup_memory();
	353	paging_init();
354	sparse_init();
1da177e4 LT	355
	356	#ifdef CONFIG_DUMMY_CONSOLE
	357	conswitchp = &dummy_con;
	358	#endif
	359
	360	/* Perform the machine specific initialisation */
2c7834a6 PM	361	if (likely(sh_mv.mv_setup))
2c7834a6 PM	362	sh_mv.mv_setup(cmdline_p);
1da177e4 LT	363	}
	364
	365	struct sh_machine_vector* __init get_mv_byname(const char* name)
	366	{
1da177e4 LT	367	extern long __machvec_start, __machvec_end;
	368	struct sh_machine_vector *all_vecs =
	369	(struct sh_machine_vector *)&__machvec_start;
	370
	371	int i, n = ((unsigned long)&__machvec_end
	372	- (unsigned long)&__machvec_start)/
	373	sizeof(struct sh_machine_vector);
	374
	375	for (i = 0; i < n; ++i) {
	376	struct sh_machine_vector *mv = &all_vecs[i];
	377	if (mv == NULL)
	378	continue;
	379	if (strcasecmp(name, get_system_type()) == 0) {
	380	return mv;
	381	}
	382	}
	383	return NULL;
	384	}
	385
	386	static struct cpu cpu[NR_CPUS];
	387
	388	static int __init topology_init(void)
	389	{
	390	int cpu_id;
	391
bc83db4f	392	for_each_possible_cpu(cpu_id)
76b67ed9	393	register_cpu(&cpu[cpu_id], cpu_id);
1da177e4 LT	394
	395	return 0;
	396	}
	397
	398	subsys_initcall(topology_init);
	399
	400	static const char *cpu_name[] = {
b552c7e8	401	[CPU_SH7206] = "SH7206", [CPU_SH7619] = "SH7619",
e5723e0e PM	402	[CPU_SH7604] = "SH7604", [CPU_SH7300] = "SH7300",
	403	[CPU_SH7705] = "SH7705", [CPU_SH7706] = "SH7706",
	404	[CPU_SH7707] = "SH7707", [CPU_SH7708] = "SH7708",
	405	[CPU_SH7709] = "SH7709", [CPU_SH7710] = "SH7710",
9465a54f	406	[CPU_SH7712] = "SH7712",
e5723e0e PM	407	[CPU_SH7729] = "SH7729", [CPU_SH7750] = "SH7750",
	408	[CPU_SH7750S] = "SH7750S", [CPU_SH7750R] = "SH7750R",
	409	[CPU_SH7751] = "SH7751", [CPU_SH7751R] = "SH7751R",
	410	[CPU_SH7760] = "SH7760", [CPU_SH73180] = "SH73180",
	411	[CPU_ST40RA] = "ST40RA", [CPU_ST40GX1] = "ST40GX1",
	412	[CPU_SH4_202] = "SH4-202", [CPU_SH4_501] = "SH4-501",
	413	[CPU_SH7770] = "SH7770", [CPU_SH7780] = "SH7780",
	414	[CPU_SH7781] = "SH7781", [CPU_SH7343] = "SH7343",
41504c39	415	[CPU_SH7785] = "SH7785", [CPU_SH7722] = "SH7722",
1da177e4 LT	416	[CPU_SH_NONE] = "Unknown"
	417	};
	418
11c19656	419	const char get_cpu_subtype(struct sh_cpuinfo c)
1da177e4	420	{
11c19656	421	return cpu_name[c->type];
1da177e4 LT	422	}
	423
	424	#ifdef CONFIG_PROC_FS
2220d164	425	/* Symbolic CPU flags, keep in sync with asm/cpu-features.h */
1da177e4	426	static const char *cpu_flags[] = {
2220d164	427	"none", "fpu", "p2flush", "mmuassoc", "dsp", "perfctr",
72c35543	428	"ptea", "llsc", "l2", NULL
1da177e4 LT	429	};
1da177e4 LT	430
11c19656	431	static void show_cpuflags(struct seq_file m, struct sh_cpuinfo c)
1da177e4 LT	432	{
	433	unsigned long i;
	434
	435	seq_printf(m, "cpu flags\t:");
	436
11c19656	437	if (!c->flags) {
1da177e4 LT	438	seq_printf(m, " %s\n", cpu_flags[0]);
	439	return;
	440	}
	441
de02797a	442	for (i = 0; cpu_flags[i]; i++)
11c19656	443	if ((c->flags & (1 << i)))
1da177e4 LT	444	seq_printf(m, " %s", cpu_flags[i+1]);
	445
	446	seq_printf(m, "\n");
	447	}
	448
2c7834a6 PM	449	static void show_cacheinfo(struct seq_file m, const char type,
2c7834a6 PM	450	struct cache_info info)
1da177e4 LT	451	{
	452	unsigned int cache_size;
	453
	454	cache_size = info.ways * info.sets * info.linesz;
	455
de02797a PM	456	seq_printf(m, "%s size\t: %2dKiB (%d-way)\n",
de02797a PM	457	type, cache_size >> 10, info.ways);
1da177e4 LT	458	}
	459
	460	/*
	461	* Get CPU information for use by the procfs.
	462	*/
	463	static int show_cpuinfo(struct seq_file m, void v)
	464	{
11c19656 PM	465	struct sh_cpuinfo *c = v;
	466	unsigned int cpu = c - cpu_data;
	467
	468	if (!cpu_online(cpu))
	469	return 0;
1da177e4	470
11c19656	471	if (cpu == 0)
1da177e4 LT	472	seq_printf(m, "machine\t\t: %s\n", get_system_type());
	473
	474	seq_printf(m, "processor\t: %d\n", cpu);
96b644bd	475	seq_printf(m, "cpu family\t: %s\n", init_utsname()->machine);
11c19656	476	seq_printf(m, "cpu type\t: %s\n", get_cpu_subtype(c));
1da177e4	477
11c19656	478	show_cpuflags(m, c);
1da177e4 LT	479
	480	seq_printf(m, "cache type\t: ");
	481
	482	/*
	483	* Check for what type of cache we have, we support both the
	484	* unified cache on the SH-2 and SH-3, as well as the harvard
	485	* style cache on the SH-4.
	486	*/
11c19656	487	if (c->icache.flags & SH_CACHE_COMBINED) {
1da177e4	488	seq_printf(m, "unified\n");
11c19656	489	show_cacheinfo(m, "cache", c->icache);
1da177e4 LT	490	} else {
1da177e4 LT	491	seq_printf(m, "split (harvard)\n");
11c19656 PM	492	show_cacheinfo(m, "icache", c->icache);
11c19656 PM	493	show_cacheinfo(m, "dcache", c->dcache);
1da177e4 LT	494	}
1da177e4 LT	495
72c35543	496	/* Optional secondary cache */
11c19656 PM	497	if (c->flags & CPU_HAS_L2_CACHE)
11c19656 PM	498	show_cacheinfo(m, "scache", c->scache);
72c35543	499
1da177e4	500	seq_printf(m, "bogomips\t: %lu.%02lu\n",
11c19656 PM	501	c->loops_per_jiffy/(500000/HZ),
11c19656 PM	502	(c->loops_per_jiffy/(5000/HZ)) % 100);
1da177e4	503
de02797a	504	return show_clocks(m);
1da177e4 LT	505	}
1da177e4 LT	506
1da177e4 LT	507	static void c_start(struct seq_file m, loff_t *pos)
	508	{
	509	return pos < NR_CPUS ? cpu_data + pos : NULL;
	510	}
	511	static void c_next(struct seq_file m, void v, loff_t pos)
	512	{
	513	++*pos;
	514	return c_start(m, pos);
	515	}
	516	static void c_stop(struct seq_file m, void v)
	517	{
	518	}
	519	struct seq_operations cpuinfo_op = {
	520	.start = c_start,
	521	.next = c_next,
	522	.stop = c_stop,
	523	.show = show_cpuinfo,
	524	};
	525	#endif /* CONFIG_PROC_FS */