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

/*  $Id: setup.c,v 1.126 2001/11/13 00:49:27 davem Exp $
 *  linux/arch/sparc/kernel/setup.c
 *
 *  Copyright (C) 1995  David S. Miller (davem@caip.rutgers.edu)
 *  Copyright (C) 2000  Anton Blanchard (anton@samba.org)
 */

#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <linux/initrd.h>
#include <asm/smp.h>
#include <linux/user.h>
#include <linux/a.out.h>
#include <linux/screen_info.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/syscalls.h>
#include <linux/kdev_t.h>
#include <linux/major.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/console.h>
#include <linux/spinlock.h>
#include <linux/root_dev.h>
#include <linux/cpu.h>
#include <linux/kdebug.h>

#include <asm/system.h>
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/oplib.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/traps.h>
#include <asm/vaddrs.h>
#include <asm/mbus.h>
#include <asm/idprom.h>
#include <asm/machines.h>
#include <asm/cpudata.h>
#include <asm/setup.h>

struct screen_info screen_info = {
	0, 0,			/* orig-x, orig-y */
	0,			/* unused */
	0,			/* orig-video-page */
	0,			/* orig-video-mode */
	128,			/* orig-video-cols */
	0,0,0,			/* ega_ax, ega_bx, ega_cx */
	54,			/* orig-video-lines */
	0,                      /* orig-video-isVGA */
	16                      /* orig-video-points */
};

/* Typing sync at the prom prompt calls the function pointed to by
 * romvec->pv_synchook which I set to the following function.
 * This should sync all filesystems and return, for now it just
 * prints out pretty messages and returns.
 */

extern unsigned long trapbase;
void (*prom_palette)(int);

/* Pretty sick eh? */
void prom_sync_me(void)
{
	unsigned long prom_tbr, flags;

	/* XXX Badly broken. FIX! - Anton */
	local_irq_save(flags);
	__asm__ __volatile__("rd %%tbr, %0\n\t" : "=r" (prom_tbr));
	__asm__ __volatile__("wr %0, 0x0, %%tbr\n\t"
			     "nop\n\t"
			     "nop\n\t"
			     "nop\n\t" : : "r" (&trapbase));

	if (prom_palette)
		prom_palette(1);
	prom_printf("PROM SYNC COMMAND...\n");
	show_free_areas();
	if(current->pid != 0) {
		local_irq_enable();
		sys_sync();
		local_irq_disable();
	}
	prom_printf("Returning to prom\n");

	__asm__ __volatile__("wr %0, 0x0, %%tbr\n\t"
			     "nop\n\t"
			     "nop\n\t"
			     "nop\n\t" : : "r" (prom_tbr));
	local_irq_restore(flags);

	return;
}

unsigned int boot_flags __initdata = 0;
#define BOOTME_DEBUG  0x1

/* Exported for mm/init.c:paging_init. */
unsigned long cmdline_memory_size __initdata = 0;

static void
prom_console_write(struct console *con, const char *s, unsigned n)
{
	prom_write(s, n);
}

static struct console prom_debug_console = {
	.name =		"debug",
	.write =	prom_console_write,
	.flags =	CON_PRINTBUFFER,
	.index =	-1,
};

/* 
 * Process kernel command line switches that are specific to the
 * SPARC or that require special low-level processing.
 */
static void __init process_switch(char c)
{
	switch (c) {
	case 'd':
		boot_flags |= BOOTME_DEBUG;
		break;
	case 's':
		break;
	case 'h':
		prom_printf("boot_flags_init: Halt!\n");
		prom_halt();
		break;
	case 'p':
		/* Use PROM debug console. */
		register_console(&prom_debug_console);
		break;
	default:
		printk("Unknown boot switch (-%c)\n", c);
		break;
	}
}

static void __init boot_flags_init(char *commands)
{
	while (*commands) {
		/* Move to the start of the next "argument". */
		while (*commands && *commands == ' ')
			commands++;

		/* Process any command switches, otherwise skip it. */
		if (*commands == '\0')
			break;
		if (*commands == '-') {
			commands++;
			while (*commands && *commands != ' ')
				process_switch(*commands++);
			continue;
		}
		if (!strncmp(commands, "mem=", 4)) {
			/*
			 * "mem=XXX[kKmM] overrides the PROM-reported
			 * memory size.
			 */
			cmdline_memory_size = simple_strtoul(commands + 4,
						     &commands, 0);
			if (*commands == 'K' || *commands == 'k') {
				cmdline_memory_size <<= 10;
				commands++;
			} else if (*commands=='M' || *commands=='m') {
				cmdline_memory_size <<= 20;
				commands++;
			}
		}
		while (*commands && *commands != ' ')
			commands++;
	}
}

/* This routine will in the future do all the nasty prom stuff
 * to probe for the mmu type and its parameters, etc. This will
 * also be where SMP things happen plus the Sparc specific memory
 * physical memory probe as on the alpha.
 */

extern int prom_probe_memory(void);
extern void sun4c_probe_vac(void);
extern char cputypval;
extern unsigned long start, end;
extern void panic_setup(char *, int *);

extern unsigned short root_flags;
extern unsigned short root_dev;
extern unsigned short ram_flags;
#define RAMDISK_IMAGE_START_MASK	0x07FF
#define RAMDISK_PROMPT_FLAG		0x8000
#define RAMDISK_LOAD_FLAG		0x4000

extern int root_mountflags;

char reboot_command[COMMAND_LINE_SIZE];
enum sparc_cpu sparc_cpu_model;

struct tt_entry *sparc_ttable;

struct pt_regs fake_swapper_regs;

void __init setup_arch(char **cmdline_p)
{
	int i;
	unsigned long highest_paddr;

	sparc_ttable = (struct tt_entry *) &start;

	/* Initialize PROM console and command line. */
	*cmdline_p = prom_getbootargs();
	strcpy(boot_command_line, *cmdline_p);

	/* Set sparc_cpu_model */
	sparc_cpu_model = sun_unknown;
	if(!strcmp(&cputypval,"sun4 ")) { sparc_cpu_model=sun4; }
	if(!strcmp(&cputypval,"sun4c")) { sparc_cpu_model=sun4c; }
	if(!strcmp(&cputypval,"sun4m")) { sparc_cpu_model=sun4m; }
	if(!strcmp(&cputypval,"sun4s")) { sparc_cpu_model=sun4m; }  /* CP-1200 with PROM 2.30 -E */
	if(!strcmp(&cputypval,"sun4d")) { sparc_cpu_model=sun4d; }
	if(!strcmp(&cputypval,"sun4e")) { sparc_cpu_model=sun4e; }
	if(!strcmp(&cputypval,"sun4u")) { sparc_cpu_model=sun4u; }

#ifdef CONFIG_SUN4
	if (sparc_cpu_model != sun4) {
		prom_printf("This kernel is for Sun4 architecture only.\n");
		prom_halt();
	}
#endif
	printk("ARCH: ");
	switch(sparc_cpu_model) {
	case sun4:
		printk("SUN4\n");
		break;
	case sun4c:
		printk("SUN4C\n");
		break;
	case sun4m:
		printk("SUN4M\n");
		break;
	case sun4d:
		printk("SUN4D\n");
		break;
	case sun4e:
		printk("SUN4E\n");
		break;
	case sun4u:
		printk("SUN4U\n");
		break;
	default:
		printk("UNKNOWN!\n");
		break;
	};

#ifdef CONFIG_DUMMY_CONSOLE
	conswitchp = &dummy_con;
#elif defined(CONFIG_PROM_CONSOLE)
	conswitchp = &prom_con;
#endif
	boot_flags_init(*cmdline_p);

	idprom_init();
	if (ARCH_SUN4C_SUN4)
		sun4c_probe_vac();
	load_mmu();
	(void) prom_probe_memory();

	phys_base = 0xffffffffUL;
	highest_paddr = 0UL;
	for (i = 0; sp_banks[i].num_bytes != 0; i++) {
		unsigned long top;

		if (sp_banks[i].base_addr < phys_base)
			phys_base = sp_banks[i].base_addr;
		top = sp_banks[i].base_addr +
			sp_banks[i].num_bytes;
		if (highest_paddr < top)
			highest_paddr = top;
	}
	pfn_base = phys_base >> PAGE_SHIFT;

	if (!root_flags)
		root_mountflags &= ~MS_RDONLY;
	ROOT_DEV = old_decode_dev(root_dev);
#ifdef CONFIG_BLK_DEV_RAM
	rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
	rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
	rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);	
#endif

	prom_setsync(prom_sync_me);

	if((boot_flags&BOOTME_DEBUG) && (linux_dbvec!=0) && 
	   ((*(short *)linux_dbvec) != -1)) {
		printk("Booted under KADB. Syncing trap table.\n");
		(*(linux_dbvec->teach_debugger))();
	}

	init_mm.context = (unsigned long) NO_CONTEXT;
	init_task.thread.kregs = &fake_swapper_regs;

	paging_init();

	smp_setup_cpu_possible_map();
}

extern char *sparc_cpu_type;
extern char *sparc_fpu_type;

static int ncpus_probed;

static int show_cpuinfo(struct seq_file *m, void *__unused)
{
	seq_printf(m,
		   "cpu\t\t: %s\n"
		   "fpu\t\t: %s\n"
		   "promlib\t\t: Version %d Revision %d\n"
		   "prom\t\t: %d.%d\n"
		   "type\t\t: %s\n"
		   "ncpus probed\t: %d\n"
		   "ncpus active\t: %d\n"
#ifndef CONFIG_SMP
		   "CPU0Bogo\t: %lu.%02lu\n"
		   "CPU0ClkTck\t: %ld\n"
#endif
		   ,
		   sparc_cpu_type ? sparc_cpu_type : "undetermined",
		   sparc_fpu_type ? sparc_fpu_type : "undetermined",
		   romvec->pv_romvers,
		   prom_rev,
		   romvec->pv_printrev >> 16,
		   romvec->pv_printrev & 0xffff,
		   &cputypval,
		   ncpus_probed,
		   num_online_cpus()
#ifndef CONFIG_SMP
		   , cpu_data(0).udelay_val/(500000/HZ),
		   (cpu_data(0).udelay_val/(5000/HZ)) % 100,
		   cpu_data(0).clock_tick
#endif
		);

#ifdef CONFIG_SMP
	smp_bogo(m);
#endif
	mmu_info(m);
#ifdef CONFIG_SMP
	smp_info(m);
#endif
	return 0;
}

static void *c_start(struct seq_file *m, loff_t *pos)
{
	/* The pointer we are returning is arbitrary,
	 * it just has to be non-NULL and not IS_ERR
	 * in the success case.
	 */
	return *pos == 0 ? &c_start : 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,
};

extern int stop_a_enabled;

void sun_do_break(void)
{
	if (!stop_a_enabled)
		return;

	printk("\n");
	flush_user_windows();

	prom_cmdline();
}

int stop_a_enabled = 1;

static int __init topology_init(void)
{
	int i, ncpus, err;

	/* Count the number of physically present processors in
	 * the machine, even on uniprocessor, so that /proc/cpuinfo
	 * output is consistent with 2.4.x
	 */
	ncpus = 0;
	while (!cpu_find_by_instance(ncpus, NULL, NULL))
		ncpus++;
	ncpus_probed = ncpus;

	err = 0;
	for_each_online_cpu(i) {
		struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
		if (!p)
			err = -ENOMEM;
		else
			register_cpu(p, i);
	}

	return err;
}

subsys_initcall(topology_init);
Commit	Line	Data
1da177e4 LT	1	/* $Id: setup.c,v 1.126 2001/11/13 00:49:27 davem Exp $
	2	* linux/arch/sparc/kernel/setup.c
	3	*
	4	* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
	5	* Copyright (C) 2000 Anton Blanchard (anton@samba.org)
	6	*/
	7
	8	#include <linux/errno.h>
	9	#include <linux/sched.h>
	10	#include <linux/kernel.h>
	11	#include <linux/mm.h>
	12	#include <linux/stddef.h>
	13	#include <linux/unistd.h>
	14	#include <linux/ptrace.h>
	15	#include <linux/slab.h>
	16	#include <linux/initrd.h>
	17	#include <asm/smp.h>
	18	#include <linux/user.h>
	19	#include <linux/a.out.h>
894673ee	20	#include <linux/screen_info.h>
1da177e4	21	#include <linux/delay.h>
1da177e4 LT	22	#include <linux/fs.h>
	23	#include <linux/seq_file.h>
	24	#include <linux/syscalls.h>
	25	#include <linux/kdev_t.h>
	26	#include <linux/major.h>
	27	#include <linux/string.h>
	28	#include <linux/init.h>
	29	#include <linux/interrupt.h>
	30	#include <linux/console.h>
	31	#include <linux/spinlock.h>
	32	#include <linux/root_dev.h>
a8cbdcea	33	#include <linux/cpu.h>
1eeb66a1	34	#include <linux/kdebug.h>
1da177e4	35
1da177e4 LT	36	#include <asm/system.h>
	37	#include <asm/io.h>
	38	#include <asm/processor.h>
	39	#include <asm/oplib.h>
	40	#include <asm/page.h>
	41	#include <asm/pgtable.h>
	42	#include <asm/traps.h>
	43	#include <asm/vaddrs.h>
1da177e4 LT	44	#include <asm/mbus.h>
	45	#include <asm/idprom.h>
	46	#include <asm/machines.h>
	47	#include <asm/cpudata.h>
	48	#include <asm/setup.h>
	49
	50	struct screen_info screen_info = {
	51	0, 0, /* orig-x, orig-y */
	52	0, /* unused */
	53	0, /* orig-video-page */
	54	0, /* orig-video-mode */
	55	128, /* orig-video-cols */
	56	0,0,0, /* ega_ax, ega_bx, ega_cx */
	57	54, /* orig-video-lines */
	58	0, /* orig-video-isVGA */
	59	16 /* orig-video-points */
	60	};
	61
	62	/* Typing sync at the prom prompt calls the function pointed to by
	63	* romvec->pv_synchook which I set to the following function.
	64	* This should sync all filesystems and return, for now it just
	65	* prints out pretty messages and returns.
	66	*/
	67
	68	extern unsigned long trapbase;
	69	void (*prom_palette)(int);
	70
	71	/* Pretty sick eh? */
	72	void prom_sync_me(void)
	73	{
	74	unsigned long prom_tbr, flags;
	75
	76	/* XXX Badly broken. FIX! - Anton */
	77	local_irq_save(flags);
	78	__asm__ __volatile__("rd %%tbr, %0\n\t" : "=r" (prom_tbr));
	79	__asm__ __volatile__("wr %0, 0x0, %%tbr\n\t"
	80	"nop\n\t"
	81	"nop\n\t"
	82	"nop\n\t" : : "r" (&trapbase));
	83
	84	if (prom_palette)
	85	prom_palette(1);
	86	prom_printf("PROM SYNC COMMAND...\n");
	87	show_free_areas();
	88	if(current->pid != 0) {
	89	local_irq_enable();
	90	sys_sync();
	91	local_irq_disable();
	92	}
	93	prom_printf("Returning to prom\n");
	94
	95	__asm__ __volatile__("wr %0, 0x0, %%tbr\n\t"
	96	"nop\n\t"
	97	"nop\n\t"
	98	"nop\n\t" : : "r" (prom_tbr));
	99	local_irq_restore(flags);
	100
	101	return;
	102	}
	103
	104	unsigned int boot_flags __initdata = 0;
	105	#define BOOTME_DEBUG 0x1
1da177e4 LT	106
	107	/* Exported for mm/init.c:paging_init. */
	108	unsigned long cmdline_memory_size __initdata = 0;
	109
	110	static void
	111	prom_console_write(struct console con, const char s, unsigned n)
	112	{
	113	prom_write(s, n);
	114	}
	115
	116	static struct console prom_debug_console = {
	117	.name = "debug",
	118	.write = prom_console_write,
	119	.flags = CON_PRINTBUFFER,
	120	.index = -1,
	121	};
	122
1da177e4 LT	123	/*
	124	* Process kernel command line switches that are specific to the
	125	* SPARC or that require special low-level processing.
	126	*/
	127	static void __init process_switch(char c)
	128	{
	129	switch (c) {
	130	case 'd':
	131	boot_flags \|= BOOTME_DEBUG;
	132	break;
	133	case 's':
1da177e4 LT	134	break;
	135	case 'h':
	136	prom_printf("boot_flags_init: Halt!\n");
	137	prom_halt();
	138	break;
	139	case 'p':
	140	/* Use PROM debug console. */
	141	register_console(&prom_debug_console);
	142	break;
	143	default:
	144	printk("Unknown boot switch (-%c)\n", c);
	145	break;
	146	}
	147	}
	148
1da177e4 LT	149	static void __init boot_flags_init(char *commands)
	150	{
	151	while (*commands) {
	152	/* Move to the start of the next "argument". */
	153	while (commands && commands == ' ')
	154	commands++;
	155
	156	/* Process any command switches, otherwise skip it. */
	157	if (*commands == '\0')
	158	break;
	159	if (*commands == '-') {
	160	commands++;
	161	while (commands && commands != ' ')
	162	process_switch(*commands++);
	163	continue;
	164	}
c73fcc84	165	if (!strncmp(commands, "mem=", 4)) {
1da177e4 LT	166	/*
	167	* "mem=XXX[kKmM] overrides the PROM-reported
	168	* memory size.
	169	*/
	170	cmdline_memory_size = simple_strtoul(commands + 4,
	171	&commands, 0);
	172	if (commands == 'K' \|\| commands == 'k') {
	173	cmdline_memory_size <<= 10;
	174	commands++;
	175	} else if (commands=='M' \|\| commands=='m') {
	176	cmdline_memory_size <<= 20;
	177	commands++;
	178	}
	179	}
	180	while (commands && commands != ' ')
	181	commands++;
	182	}
	183	}
	184
	185	/* This routine will in the future do all the nasty prom stuff
	186	* to probe for the mmu type and its parameters, etc. This will
	187	* also be where SMP things happen plus the Sparc specific memory
	188	* physical memory probe as on the alpha.
	189	*/
	190
	191	extern int prom_probe_memory(void);
	192	extern void sun4c_probe_vac(void);
	193	extern char cputypval;
	194	extern unsigned long start, end;
	195	extern void panic_setup(char , int );
	196
	197	extern unsigned short root_flags;
	198	extern unsigned short root_dev;
	199	extern unsigned short ram_flags;
	200	#define RAMDISK_IMAGE_START_MASK 0x07FF
	201	#define RAMDISK_PROMPT_FLAG 0x8000
	202	#define RAMDISK_LOAD_FLAG 0x4000
	203
	204	extern int root_mountflags;
	205
	206	char reboot_command[COMMAND_LINE_SIZE];
	207	enum sparc_cpu sparc_cpu_model;
	208
	209	struct tt_entry *sparc_ttable;
	210
	211	struct pt_regs fake_swapper_regs;
	212
1da177e4 LT	213	void __init setup_arch(char **cmdline_p)
	214	{
	215	int i;
	216	unsigned long highest_paddr;
	217
	218	sparc_ttable = (struct tt_entry *) &start;
	219
	220	/* Initialize PROM console and command line. */
	221	*cmdline_p = prom_getbootargs();
08e7ca11	222	strcpy(boot_command_line, *cmdline_p);
1da177e4 LT	223
	224	/* Set sparc_cpu_model */
	225	sparc_cpu_model = sun_unknown;
	226	if(!strcmp(&cputypval,"sun4 ")) { sparc_cpu_model=sun4; }
	227	if(!strcmp(&cputypval,"sun4c")) { sparc_cpu_model=sun4c; }
	228	if(!strcmp(&cputypval,"sun4m")) { sparc_cpu_model=sun4m; }
	229	if(!strcmp(&cputypval,"sun4s")) { sparc_cpu_model=sun4m; } /* CP-1200 with PROM 2.30 -E */
	230	if(!strcmp(&cputypval,"sun4d")) { sparc_cpu_model=sun4d; }
	231	if(!strcmp(&cputypval,"sun4e")) { sparc_cpu_model=sun4e; }
	232	if(!strcmp(&cputypval,"sun4u")) { sparc_cpu_model=sun4u; }
	233
	234	#ifdef CONFIG_SUN4
	235	if (sparc_cpu_model != sun4) {
	236	prom_printf("This kernel is for Sun4 architecture only.\n");
	237	prom_halt();
	238	}
	239	#endif
	240	printk("ARCH: ");
	241	switch(sparc_cpu_model) {
	242	case sun4:
	243	printk("SUN4\n");
	244	break;
	245	case sun4c:
	246	printk("SUN4C\n");
	247	break;
	248	case sun4m:
	249	printk("SUN4M\n");
	250	break;
	251	case sun4d:
	252	printk("SUN4D\n");
	253	break;
	254	case sun4e:
	255	printk("SUN4E\n");
	256	break;
	257	case sun4u:
	258	printk("SUN4U\n");
	259	break;
	260	default:
	261	printk("UNKNOWN!\n");
	262	break;
	263	};
	264
	265	#ifdef CONFIG_DUMMY_CONSOLE
	266	conswitchp = &dummy_con;
	267	#elif defined(CONFIG_PROM_CONSOLE)
	268	conswitchp = &prom_con;
	269	#endif
	270	boot_flags_init(*cmdline_p);
	271
	272	idprom_init();
	273	if (ARCH_SUN4C_SUN4)
	274	sun4c_probe_vac();
	275	load_mmu();
	276	(void) prom_probe_memory();
	277
	278	phys_base = 0xffffffffUL;
	279	highest_paddr = 0UL;
	280	for (i = 0; sp_banks[i].num_bytes != 0; i++) {
	281	unsigned long top;
	282
	283	if (sp_banks[i].base_addr < phys_base)
	284	phys_base = sp_banks[i].base_addr;
	285	top = sp_banks[i].base_addr +
	286	sp_banks[i].num_bytes;
287	if (highest_paddr < top)
288	highest_paddr = top;
289	}
290	pfn_base = phys_base >> PAGE_SHIFT;
291
292	if (!root_flags)
293	root_mountflags &= ~MS_RDONLY;
294	ROOT_DEV = old_decode_dev(root_dev);
5d2170ad	295	#ifdef CONFIG_BLK_DEV_RAM
1da177e4 LT	296	rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
	297	rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
	298	rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
	299	#endif
	300
	301	prom_setsync(prom_sync_me);
	302
	303	if((boot_flags&BOOTME_DEBUG) && (linux_dbvec!=0) &&
	304	(((short )linux_dbvec) != -1)) {
	305	printk("Booted under KADB. Syncing trap table.\n");
	306	(*(linux_dbvec->teach_debugger))();
	307	}
	308
	309	init_mm.context = (unsigned long) NO_CONTEXT;
	310	init_task.thread.kregs = &fake_swapper_regs;
	311
	312	paging_init();
a23b423e KH	313
a23b423e KH	314	smp_setup_cpu_possible_map();
1da177e4 LT	315	}
1da177e4 LT	316
1da177e4 LT	317	extern char *sparc_cpu_type;
	318	extern char *sparc_fpu_type;
	319
a8cbdcea BB	320	static int ncpus_probed;
a8cbdcea BB	321
1da177e4 LT	322	static int show_cpuinfo(struct seq_file m, void __unused)
	323	{
	324	seq_printf(m,
	325	"cpu\t\t: %s\n"
	326	"fpu\t\t: %s\n"
	327	"promlib\t\t: Version %d Revision %d\n"
	328	"prom\t\t: %d.%d\n"
	329	"type\t\t: %s\n"
	330	"ncpus probed\t: %d\n"
	331	"ncpus active\t: %d\n"
	332	#ifndef CONFIG_SMP
	333	"CPU0Bogo\t: %lu.%02lu\n"
	334	"CPU0ClkTck\t: %ld\n"
	335	#endif
	336	,
	337	sparc_cpu_type ? sparc_cpu_type : "undetermined",
	338	sparc_fpu_type ? sparc_fpu_type : "undetermined",
	339	romvec->pv_romvers,
	340	prom_rev,
	341	romvec->pv_printrev >> 16,
	342	romvec->pv_printrev & 0xffff,
	343	&cputypval,
a8cbdcea	344	ncpus_probed,
1da177e4 LT	345	num_online_cpus()
	346	#ifndef CONFIG_SMP
	347	, cpu_data(0).udelay_val/(500000/HZ),
	348	(cpu_data(0).udelay_val/(5000/HZ)) % 100,
	349	cpu_data(0).clock_tick
	350	#endif
	351	);
	352
	353	#ifdef CONFIG_SMP
	354	smp_bogo(m);
	355	#endif
	356	mmu_info(m);
	357	#ifdef CONFIG_SMP
	358	smp_info(m);
	359	#endif
	360	return 0;
	361	}
	362
	363	static void c_start(struct seq_file m, loff_t *pos)
	364	{
	365	/* The pointer we are returning is arbitrary,
	366	* it just has to be non-NULL and not IS_ERR
	367	* in the success case.
	368	*/
	369	return *pos == 0 ? &c_start : NULL;
	370	}
	371
	372	static void c_next(struct seq_file m, void v, loff_t pos)
	373	{
	374	++*pos;
	375	return c_start(m, pos);
	376	}
	377
	378	static void c_stop(struct seq_file m, void v)
	379	{
	380	}
	381
872e2be7	382	const struct seq_operations cpuinfo_op = {
1da177e4 LT	383	.start =c_start,
	384	.next = c_next,
	385	.stop = c_stop,
	386	.show = show_cpuinfo,
	387	};
	388
	389	extern int stop_a_enabled;
	390
	391	void sun_do_break(void)
	392	{
	393	if (!stop_a_enabled)
	394	return;
	395
	396	printk("\n");
	397	flush_user_windows();
	398
	399	prom_cmdline();
	400	}
	401
1da177e4	402	int stop_a_enabled = 1;
a8cbdcea BB	403
	404	static int __init topology_init(void)
	405	{
	406	int i, ncpus, err;
	407
	408	/* Count the number of physically present processors in
	409	* the machine, even on uniprocessor, so that /proc/cpuinfo
	410	* output is consistent with 2.4.x
	411	*/
	412	ncpus = 0;
	413	while (!cpu_find_by_instance(ncpus, NULL, NULL))
	414	ncpus++;
	415	ncpus_probed = ncpus;
	416
	417	err = 0;
	418	for_each_online_cpu(i) {
	419	struct cpu p = kzalloc(sizeof(p), GFP_KERNEL);
	420	if (!p)
	421	err = -ENOMEM;
	422	else
94583779	423	register_cpu(p, i);
a8cbdcea BB	424	}
	425
	426	return err;
	427	}
	428
	429	subsys_initcall(topology_init);