[deliverable/linux.git] / arch / sparc64 / kernel / setup.c

/*  $Id: setup.c,v 1.72 2002/02/09 19:49:30 davem Exp $
 *  linux/arch/sparc64/kernel/setup.c
 *
 *  Copyright (C) 1995,1996  David S. Miller (davem@caip.rutgers.edu)
 *  Copyright (C) 1997       Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 */

#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 <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/inet.h>
#include <linux/console.h>
#include <linux/root_dev.h>
#include <linux/interrupt.h>
#include <linux/cpu.h>
#include <linux/initrd.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/idprom.h>
#include <asm/head.h>
#include <asm/starfire.h>
#include <asm/mmu_context.h>
#include <asm/timer.h>
#include <asm/sections.h>
#include <asm/setup.h>
#include <asm/mmu.h>

#ifdef CONFIG_IP_PNP
#include <net/ipconfig.h>
#endif

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,		/* unused, ega_bx, unused */
	54,			/* orig-video-lines */
	0,                      /* orig-video-isVGA */
	16                      /* orig-video-points */
};

void (*prom_palette)(int);
void (*prom_keyboard)(void);

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

unsigned int boot_flags = 0;
#define BOOTME_DEBUG  0x1
#define BOOTME_SINGLE 0x2

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

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

/* XXX Implement this at some point... */
void kernel_enter_debugger(void)
{
}

int obp_system_intr(void)
{
	if (boot_flags & BOOTME_DEBUG) {
		printk("OBP: system interrupted\n");
		prom_halt();
		return 1;
	}
	return 0;
}

/* 
 * 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':
		boot_flags |= BOOTME_SINGLE;
		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;
	case 'P':
		/* Force UltraSPARC-III P-Cache on. */
		if (tlb_type != cheetah) {
			printk("BOOT: Ignoring P-Cache force option.\n");
			break;
		}
		cheetah_pcache_forced_on = 1;
		add_taint(TAINT_MACHINE_CHECK);
		cheetah_enable_pcache();
		break;

	default:
		printk("Unknown boot switch (-%c)\n", c);
		break;
	}
}

static void __init process_console(char *commands)
{
	serial_console = 0;
	commands += 8;
	/* Linux-style serial */
	if (!strncmp(commands, "ttyS", 4))
		serial_console = simple_strtoul(commands + 4, NULL, 10) + 1;
	else if (!strncmp(commands, "tty", 3)) {
		char c = *(commands + 3);
		/* Solaris-style serial */
		if (c == 'a' || c == 'b') {
			serial_console = c - 'a' + 1;
			prom_printf ("Using /dev/tty%c as console.\n", c);
		}
		/* else Linux-style fbcon, not serial */
	}
#if defined(CONFIG_PROM_CONSOLE)
	if (!strncmp(commands, "prom", 4)) {
		char *p;

		for (p = commands - 8; *p && *p != ' '; p++)
			*p = ' ';
		conswitchp = &prom_con;
	}
#endif
}

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, "console=", 8)) {
			process_console(commands);
		} else 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++;
	}
}

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];

static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };

void __init per_cpu_patch(void)
{
	struct cpuid_patch_entry *p;
	unsigned long ver;
	int is_jbus;

	if (tlb_type == spitfire && !this_is_starfire)
		return;

	is_jbus = 0;
	if (tlb_type != hypervisor) {
		__asm__ ("rdpr %%ver, %0" : "=r" (ver));
		is_jbus = ((ver >> 32UL) == __JALAPENO_ID ||
			   (ver >> 32UL) == __SERRANO_ID);
	}

	p = &__cpuid_patch;
	while (p < &__cpuid_patch_end) {
		unsigned long addr = p->addr;
		unsigned int *insns;

		switch (tlb_type) {
		case spitfire:
			insns = &p->starfire[0];
			break;
		case cheetah:
		case cheetah_plus:
			if (is_jbus)
				insns = &p->cheetah_jbus[0];
			else
				insns = &p->cheetah_safari[0];
			break;
		case hypervisor:
			insns = &p->sun4v[0];
			break;
		default:
			prom_printf("Unknown cpu type, halting.\n");
			prom_halt();
		};

		*(unsigned int *) (addr +  0) = insns[0];
		wmb();
		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));

		*(unsigned int *) (addr +  4) = insns[1];
		wmb();
		__asm__ __volatile__("flush	%0" : : "r" (addr +  4));

		*(unsigned int *) (addr +  8) = insns[2];
		wmb();
		__asm__ __volatile__("flush	%0" : : "r" (addr +  8));

		*(unsigned int *) (addr + 12) = insns[3];
		wmb();
		__asm__ __volatile__("flush	%0" : : "r" (addr + 12));

		p++;
	}
}

void __init sun4v_patch(void)
{
	struct sun4v_1insn_patch_entry *p1;
	struct sun4v_2insn_patch_entry *p2;

	if (tlb_type != hypervisor)
		return;

	p1 = &__sun4v_1insn_patch;
	while (p1 < &__sun4v_1insn_patch_end) {
		unsigned long addr = p1->addr;

		*(unsigned int *) (addr +  0) = p1->insn;
		wmb();
		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));

		p1++;
	}

	p2 = &__sun4v_2insn_patch;
	while (p2 < &__sun4v_2insn_patch_end) {
		unsigned long addr = p2->addr;

		*(unsigned int *) (addr +  0) = p2->insns[0];
		wmb();
		__asm__ __volatile__("flush	%0" : : "r" (addr +  0));

		*(unsigned int *) (addr +  4) = p2->insns[1];
		wmb();
		__asm__ __volatile__("flush	%0" : : "r" (addr +  4));

		p2++;
	}
}

#ifdef CONFIG_SMP
void __init boot_cpu_id_too_large(int cpu)
{
	prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
		    cpu, NR_CPUS);
	prom_halt();
}
#endif

void __init setup_arch(char **cmdline_p)
{
	/* Initialize PROM console and command line. */
	*cmdline_p = prom_getbootargs();
	strcpy(saved_command_line, *cmdline_p);

	if (tlb_type == hypervisor)
		printk("ARCH: SUN4V\n");
	else
		printk("ARCH: SUN4U\n");

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

	boot_flags_init(*cmdline_p);

	idprom_init();

	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

	task_thread_info(&init_task)->kregs = &fake_swapper_regs;

#ifdef CONFIG_IP_PNP
	if (!ic_set_manually) {
		int chosen = prom_finddevice ("/chosen");
		u32 cl, sv, gw;
		
		cl = prom_getintdefault (chosen, "client-ip", 0);
		sv = prom_getintdefault (chosen, "server-ip", 0);
		gw = prom_getintdefault (chosen, "gateway-ip", 0);
		if (cl && sv) {
			ic_myaddr = cl;
			ic_servaddr = sv;
			if (gw)
				ic_gateway = gw;
#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP)
			ic_proto_enabled = 0;
#endif
		}
	}
#endif

	/* Get boot processor trap_block[] setup.  */
	init_cur_cpu_trap(current_thread_info());

	paging_init();

	smp_setup_cpu_possible_map();
}

static int __init set_preferred_console(void)
{
	int idev, odev;

	/* The user has requested a console so this is already set up. */
	if (serial_console >= 0)
		return -EBUSY;

	idev = prom_query_input_device();
	odev = prom_query_output_device();
	if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) {
		serial_console = 0;
	} else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) {
		serial_console = 1;
	} else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) {
		serial_console = 2;
	} else if (idev == PROMDEV_IRSC && odev == PROMDEV_ORSC) {
		serial_console = 3;
	} else if (idev == PROMDEV_IVCONS && odev == PROMDEV_OVCONS) {
		/* sunhv_console_init() doesn't check the serial_console
		 * value anyways...
		 */
		serial_console = 4;
		return add_preferred_console("ttyHV", 0, NULL);
	} else {
		prom_printf("Inconsistent console: "
			    "input %d, output %d\n",
			    idev, odev);
		prom_halt();
	}

	if (serial_console)
		return add_preferred_console("ttyS", serial_console - 1, NULL);

	return -ENODEV;
}
console_initcall(set_preferred_console);

/* BUFFER is PAGE_SIZE bytes long. */

extern char *sparc_cpu_type;
extern char *sparc_fpu_type;

extern void smp_info(struct seq_file *);
extern void smp_bogo(struct seq_file *);
extern void mmu_info(struct seq_file *);

unsigned int dcache_parity_tl1_occurred;
unsigned int icache_parity_tl1_occurred;

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"
		   "prom\t\t: %s\n"
		   "type\t\t: %s\n"
		   "ncpus probed\t: %d\n"
		   "ncpus active\t: %d\n"
		   "D$ parity tl1\t: %u\n"
		   "I$ parity tl1\t: %u\n"
#ifndef CONFIG_SMP
		   "Cpu0Bogo\t: %lu.%02lu\n"
		   "Cpu0ClkTck\t: %016lx\n"
#endif
		   ,
		   sparc_cpu_type,
		   sparc_fpu_type,
		   prom_version,
		   ((tlb_type == hypervisor) ?
		    "sun4v" :
		    "sun4u"),
		   ncpus_probed,
		   num_online_cpus(),
		   dcache_parity_tl1_occurred,
		   icache_parity_tl1_occurred
#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)
{
}

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;

	prom_printf("\n");
	flush_user_windows();

	prom_cmdline();
}

int serial_console = -1;
int stop_a_enabled = 1;

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

	err = -ENOMEM;

	/* 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_probed = 0;
	while (!cpu_find_by_instance(ncpus_probed, NULL, NULL))
		ncpus_probed++;

	for_each_possible_cpu(i) {
		struct cpu *p = kzalloc(sizeof(*p), GFP_KERNEL);
		if (p) {
			register_cpu(p, i);
			err = 0;
		}
	}

	return err;
}

subsys_initcall(topology_init);
Commit	Line	Data
1da177e4 LT	1	/* $Id: setup.c,v 1.72 2002/02/09 19:49:30 davem Exp $
	2	* linux/arch/sparc64/kernel/setup.c
	3	*
	4	* Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu)
	5	* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
	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 <asm/smp.h>
	17	#include <linux/user.h>
	18	#include <linux/a.out.h>
894673ee	19	#include <linux/screen_info.h>
1da177e4	20	#include <linux/delay.h>
1da177e4 LT	21	#include <linux/fs.h>
	22	#include <linux/seq_file.h>
	23	#include <linux/syscalls.h>
	24	#include <linux/kdev_t.h>
	25	#include <linux/major.h>
	26	#include <linux/string.h>
	27	#include <linux/init.h>
	28	#include <linux/inet.h>
	29	#include <linux/console.h>
	30	#include <linux/root_dev.h>
	31	#include <linux/interrupt.h>
	32	#include <linux/cpu.h>
	33	#include <linux/initrd.h>
	34
1da177e4 LT	35	#include <asm/system.h>
	36	#include <asm/io.h>
	37	#include <asm/processor.h>
	38	#include <asm/oplib.h>
	39	#include <asm/page.h>
	40	#include <asm/pgtable.h>
	41	#include <asm/idprom.h>
	42	#include <asm/head.h>
	43	#include <asm/starfire.h>
	44	#include <asm/mmu_context.h>
	45	#include <asm/timer.h>
	46	#include <asm/sections.h>
	47	#include <asm/setup.h>
	48	#include <asm/mmu.h>
	49
	50	#ifdef CONFIG_IP_PNP
	51	#include <net/ipconfig.h>
	52	#endif
	53
	54	struct screen_info screen_info = {
	55	0, 0, /* orig-x, orig-y */
	56	0, /* unused */
	57	0, /* orig-video-page */
	58	0, /* orig-video-mode */
	59	128, /* orig-video-cols */
	60	0, 0, 0, /* unused, ega_bx, unused */
	61	54, /* orig-video-lines */
	62	0, /* orig-video-isVGA */
	63	16 /* orig-video-points */
	64	};
	65
1da177e4 LT	66	void (*prom_palette)(int);
	67	void (*prom_keyboard)(void);
	68
	69	static void
	70	prom_console_write(struct console con, const char s, unsigned n)
	71	{
	72	prom_write(s, n);
	73	}
	74
1da177e4 LT	75	unsigned int boot_flags = 0;
	76	#define BOOTME_DEBUG 0x1
	77	#define BOOTME_SINGLE 0x2
	78
	79	/* Exported for mm/init.c:paging_init. */
	80	unsigned long cmdline_memory_size = 0;
	81
	82	static struct console prom_debug_console = {
	83	.name = "debug",
	84	.write = prom_console_write,
	85	.flags = CON_PRINTBUFFER,
	86	.index = -1,
	87	};
	88
	89	/* XXX Implement this at some point... */
	90	void kernel_enter_debugger(void)
	91	{
	92	}
	93
	94	int obp_system_intr(void)
	95	{
	96	if (boot_flags & BOOTME_DEBUG) {
	97	printk("OBP: system interrupted\n");
	98	prom_halt();
	99	return 1;
	100	}
	101	return 0;
	102	}
	103
	104	/*
	105	* Process kernel command line switches that are specific to the
	106	* SPARC or that require special low-level processing.
	107	*/
	108	static void __init process_switch(char c)
	109	{
	110	switch (c) {
	111	case 'd':
	112	boot_flags \|= BOOTME_DEBUG;
	113	break;
	114	case 's':
	115	boot_flags \|= BOOTME_SINGLE;
	116	break;
	117	case 'h':
	118	prom_printf("boot_flags_init: Halt!\n");
	119	prom_halt();
	120	break;
	121	case 'p':
	122	/* Use PROM debug console. */
	123	register_console(&prom_debug_console);
	124	break;
816242da DM	125	case 'P':
	126	/* Force UltraSPARC-III P-Cache on. */
	127	if (tlb_type != cheetah) {
	128	printk("BOOT: Ignoring P-Cache force option.\n");
	129	break;
	130	}
	131	cheetah_pcache_forced_on = 1;
	132	add_taint(TAINT_MACHINE_CHECK);
	133	cheetah_enable_pcache();
	134	break;
	135
1da177e4 LT	136	default:
	137	printk("Unknown boot switch (-%c)\n", c);
	138	break;
	139	}
	140	}
	141
	142	static void __init process_console(char *commands)
	143	{
	144	serial_console = 0;
	145	commands += 8;
	146	/* Linux-style serial */
	147	if (!strncmp(commands, "ttyS", 4))
	148	serial_console = simple_strtoul(commands + 4, NULL, 10) + 1;
	149	else if (!strncmp(commands, "tty", 3)) {
	150	char c = *(commands + 3);
	151	/* Solaris-style serial */
	152	if (c == 'a' \|\| c == 'b') {
	153	serial_console = c - 'a' + 1;
	154	prom_printf ("Using /dev/tty%c as console.\n", c);
	155	}
	156	/* else Linux-style fbcon, not serial */
	157	}
	158	#if defined(CONFIG_PROM_CONSOLE)
	159	if (!strncmp(commands, "prom", 4)) {
	160	char *p;
	161
	162	for (p = commands - 8; p && p != ' '; p++)
	163	*p = ' ';
	164	conswitchp = &prom_con;
	165	}
	166	#endif
	167	}
	168
	169	static void __init boot_flags_init(char *commands)
	170	{
	171	while (*commands) {
	172	/* Move to the start of the next "argument". */
	173	while (commands && commands == ' ')
	174	commands++;
	175
	176	/* Process any command switches, otherwise skip it. */
	177	if (*commands == '\0')
	178	break;
	179	if (*commands == '-') {
	180	commands++;
	181	while (commands && commands != ' ')
	182	process_switch(*commands++);
	183	continue;
	184	}
	185	if (!strncmp(commands, "console=", 8)) {
	186	process_console(commands);
	187	} else if (!strncmp(commands, "mem=", 4)) {
	188	/*
	189	* "mem=XXX[kKmM]" overrides the PROM-reported
	190	* memory size.
	191	*/
	192	cmdline_memory_size = simple_strtoul(commands + 4,
	193	&commands, 0);
	194	if (commands == 'K' \|\| commands == 'k') {
	195	cmdline_memory_size <<= 10;
	196	commands++;
	197	} else if (commands=='M' \|\| commands=='m') {
	198	cmdline_memory_size <<= 20;
	199	commands++;
200	}
201	}
202	while (commands && commands != ' ')
203	commands++;
204	}
205	}
206
1da177e4 LT	207	extern void panic_setup(char , int );
	208
	209	extern unsigned short root_flags;
	210	extern unsigned short root_dev;
	211	extern unsigned short ram_flags;
	212	#define RAMDISK_IMAGE_START_MASK 0x07FF
	213	#define RAMDISK_PROMPT_FLAG 0x8000
	214	#define RAMDISK_LOAD_FLAG 0x4000
	215
	216	extern int root_mountflags;
	217
	218	char reboot_command[COMMAND_LINE_SIZE];
	219
	220	static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
	221
951bc82c	222	void __init per_cpu_patch(void)
92704a1c	223	{
92704a1c DM	224	struct cpuid_patch_entry *p;
	225	unsigned long ver;
	226	int is_jbus;
	227
	228	if (tlb_type == spitfire && !this_is_starfire)
	229	return;
	230
d82ace7d DM	231	is_jbus = 0;
	232	if (tlb_type != hypervisor) {
	233	__asm__ ("rdpr %%ver, %0" : "=r" (ver));
ebd8c56c DM	234	is_jbus = ((ver >> 32UL) == __JALAPENO_ID \|\|
ebd8c56c DM	235	(ver >> 32UL) == __SERRANO_ID);
d82ace7d	236	}
92704a1c DM	237
	238	p = &__cpuid_patch;
	239	while (p < &__cpuid_patch_end) {
	240	unsigned long addr = p->addr;
	241	unsigned int *insns;
	242
	243	switch (tlb_type) {
	244	case spitfire:
	245	insns = &p->starfire[0];
	246	break;
	247	case cheetah:
	248	case cheetah_plus:
	249	if (is_jbus)
	250	insns = &p->cheetah_jbus[0];
	251	else
	252	insns = &p->cheetah_safari[0];
	253	break;
d96b8153 DM	254	case hypervisor:
	255	insns = &p->sun4v[0];
	256	break;
92704a1c DM	257	default:
	258	prom_printf("Unknown cpu type, halting.\n");
	259	prom_halt();
	260	};
	261
	262	(unsigned int ) (addr + 0) = insns[0];
840aaef8	263	wmb();
92704a1c DM	264	__asm__ __volatile__("flush %0" : : "r" (addr + 0));
	265
	266	(unsigned int ) (addr + 4) = insns[1];
840aaef8	267	wmb();
92704a1c DM	268	__asm__ __volatile__("flush %0" : : "r" (addr + 4));
	269
	270	(unsigned int ) (addr + 8) = insns[2];
840aaef8	271	wmb();
92704a1c DM	272	__asm__ __volatile__("flush %0" : : "r" (addr + 8));
	273
	274	(unsigned int ) (addr + 12) = insns[3];
840aaef8	275	wmb();
92704a1c DM	276	__asm__ __volatile__("flush %0" : : "r" (addr + 12));
	277
	278	p++;
	279	}
92704a1c DM	280	}
92704a1c DM	281
951bc82c	282	void __init sun4v_patch(void)
936f482a	283	{
df7d6aec DM	284	struct sun4v_1insn_patch_entry *p1;
df7d6aec DM	285	struct sun4v_2insn_patch_entry *p2;
936f482a DM	286
	287	if (tlb_type != hypervisor)
	288	return;
	289
df7d6aec DM	290	p1 = &__sun4v_1insn_patch;
df7d6aec DM	291	while (p1 < &__sun4v_1insn_patch_end) {
45fec05f	292	unsigned long addr = p1->addr;
936f482a	293
45fec05f	294	(unsigned int ) (addr + 0) = p1->insn;
840aaef8	295	wmb();
936f482a DM	296	__asm__ __volatile__("flush %0" : : "r" (addr + 0));
936f482a DM	297
45fec05f DM	298	p1++;
	299	}
	300
df7d6aec DM	301	p2 = &__sun4v_2insn_patch;
df7d6aec DM	302	while (p2 < &__sun4v_2insn_patch_end) {
45fec05f DM	303	unsigned long addr = p2->addr;
	304
	305	(unsigned int ) (addr + 0) = p2->insns[0];
840aaef8	306	wmb();
45fec05f DM	307	__asm__ __volatile__("flush %0" : : "r" (addr + 0));
45fec05f DM	308
fd05068d	309	(unsigned int ) (addr + 4) = p2->insns[1];
840aaef8	310	wmb();
45fec05f DM	311	__asm__ __volatile__("flush %0" : : "r" (addr + 4));
	312
	313	p2++;
936f482a DM	314	}
	315	}
	316
951bc82c DM	317	#ifdef CONFIG_SMP
	318	void __init boot_cpu_id_too_large(int cpu)
	319	{
	320	prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
	321	cpu, NR_CPUS);
	322	prom_halt();
	323	}
	324	#endif
	325
1da177e4 LT	326	void __init setup_arch(char **cmdline_p)
1da177e4 LT	327	{
1da177e4 LT	328	/* Initialize PROM console and command line. */
	329	*cmdline_p = prom_getbootargs();
	330	strcpy(saved_command_line, *cmdline_p);
	331
3a8c069d DM	332	if (tlb_type == hypervisor)
	333	printk("ARCH: SUN4V\n");
	334	else
	335	printk("ARCH: SUN4U\n");
1da177e4 LT	336
	337	#ifdef CONFIG_DUMMY_CONSOLE
	338	conswitchp = &dummy_con;
	339	#elif defined(CONFIG_PROM_CONSOLE)
	340	conswitchp = &prom_con;
	341	#endif
	342
1da177e4 LT	343	boot_flags_init(*cmdline_p);
	344
	345	idprom_init();
1da177e4 LT	346
	347	if (!root_flags)
	348	root_mountflags &= ~MS_RDONLY;
	349	ROOT_DEV = old_decode_dev(root_dev);
467418f3	350	#ifdef CONFIG_BLK_DEV_RAM
1da177e4 LT	351	rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
	352	rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
	353	rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
	354	#endif
	355
f3169641	356	task_thread_info(&init_task)->kregs = &fake_swapper_regs;
1da177e4 LT	357
	358	#ifdef CONFIG_IP_PNP
	359	if (!ic_set_manually) {
	360	int chosen = prom_finddevice ("/chosen");
	361	u32 cl, sv, gw;
	362
	363	cl = prom_getintdefault (chosen, "client-ip", 0);
	364	sv = prom_getintdefault (chosen, "server-ip", 0);
	365	gw = prom_getintdefault (chosen, "gateway-ip", 0);
	366	if (cl && sv) {
	367	ic_myaddr = cl;
	368	ic_servaddr = sv;
	369	if (gw)
	370	ic_gateway = gw;
	371	#if defined(CONFIG_IP_PNP_BOOTP) \|\| defined(CONFIG_IP_PNP_RARP)
	372	ic_proto_enabled = 0;
	373	#endif
	374	}
	375	}
	376	#endif
	377
56fb4df6	378	/* Get boot processor trap_block[] setup. */
72aff53f	379	init_cur_cpu_trap(current_thread_info());
52845cdb DM	380
52845cdb DM	381	paging_init();
765b5f32 DM	382
765b5f32 DM	383	smp_setup_cpu_possible_map();
1da177e4 LT	384	}
	385
	386	static int __init set_preferred_console(void)
	387	{
	388	int idev, odev;
	389
	390	/* The user has requested a console so this is already set up. */
	391	if (serial_console >= 0)
	392	return -EBUSY;
	393
	394	idev = prom_query_input_device();
	395	odev = prom_query_output_device();
	396	if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) {
	397	serial_console = 0;
	398	} else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) {
	399	serial_console = 1;
	400	} else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) {
	401	serial_console = 2;
c126cf80 ED	402	} else if (idev == PROMDEV_IRSC && odev == PROMDEV_ORSC) {
c126cf80 ED	403	serial_console = 3;
1a7a242c DM	404	} else if (idev == PROMDEV_IVCONS && odev == PROMDEV_OVCONS) {
	405	/* sunhv_console_init() doesn't check the serial_console
	406	* value anyways...
	407	*/
	408	serial_console = 4;
d5a2aa24	409	return add_preferred_console("ttyHV", 0, NULL);
1da177e4 LT	410	} else {
	411	prom_printf("Inconsistent console: "
	412	"input %d, output %d\n",
	413	idev, odev);
	414	prom_halt();
	415	}
	416
	417	if (serial_console)
	418	return add_preferred_console("ttyS", serial_console - 1, NULL);
	419
	420	return -ENODEV;
	421	}
	422	console_initcall(set_preferred_console);
	423
	424	/* BUFFER is PAGE_SIZE bytes long. */
	425
	426	extern char *sparc_cpu_type;
	427	extern char *sparc_fpu_type;
	428
	429	extern void smp_info(struct seq_file *);
	430	extern void smp_bogo(struct seq_file *);
	431	extern void mmu_info(struct seq_file *);
	432
80dc0d6b DM	433	unsigned int dcache_parity_tl1_occurred;
	434	unsigned int icache_parity_tl1_occurred;
	435
4d45cbac DM	436	static int ncpus_probed;
4d45cbac DM	437
1da177e4 LT	438	static int show_cpuinfo(struct seq_file m, void __unused)
	439	{
	440	seq_printf(m,
	441	"cpu\t\t: %s\n"
	442	"fpu\t\t: %s\n"
90a6646b DM	443	"prom\t\t: %s\n"
90a6646b DM	444	"type\t\t: %s\n"
4d45cbac DM	445	"ncpus probed\t: %d\n"
4d45cbac DM	446	"ncpus active\t: %d\n"
80dc0d6b DM	447	"D$ parity tl1\t: %u\n"
80dc0d6b DM	448	"I$ parity tl1\t: %u\n"
1da177e4 LT	449	#ifndef CONFIG_SMP
	450	"Cpu0Bogo\t: %lu.%02lu\n"
	451	"Cpu0ClkTck\t: %016lx\n"
	452	#endif
	453	,
	454	sparc_cpu_type,
	455	sparc_fpu_type,
90a6646b DM	456	prom_version,
	457	((tlb_type == hypervisor) ?
	458	"sun4v" :
	459	"sun4u"),
4d45cbac DM	460	ncpus_probed,
4d45cbac DM	461	num_online_cpus(),
80dc0d6b DM	462	dcache_parity_tl1_occurred,
80dc0d6b DM	463	icache_parity_tl1_occurred
1da177e4 LT	464	#ifndef CONFIG_SMP
	465	, cpu_data(0).udelay_val/(500000/HZ),
	466	(cpu_data(0).udelay_val/(5000/HZ)) % 100,
	467	cpu_data(0).clock_tick
	468	#endif
	469	);
	470	#ifdef CONFIG_SMP
	471	smp_bogo(m);
	472	#endif
	473	mmu_info(m);
	474	#ifdef CONFIG_SMP
	475	smp_info(m);
	476	#endif
	477	return 0;
	478	}
	479
	480	static void c_start(struct seq_file m, loff_t *pos)
	481	{
	482	/* The pointer we are returning is arbitrary,
	483	* it just has to be non-NULL and not IS_ERR
	484	* in the success case.
	485	*/
	486	return *pos == 0 ? &c_start : NULL;
	487	}
	488
	489	static void c_next(struct seq_file m, void v, loff_t pos)
	490	{
	491	++*pos;
	492	return c_start(m, pos);
	493	}
	494
	495	static void c_stop(struct seq_file m, void v)
	496	{
	497	}
	498
	499	struct seq_operations cpuinfo_op = {
	500	.start =c_start,
	501	.next = c_next,
	502	.stop = c_stop,
	503	.show = show_cpuinfo,
	504	};
	505
	506	extern int stop_a_enabled;
	507
	508	void sun_do_break(void)
	509	{
	510	if (!stop_a_enabled)
	511	return;
	512
	513	prom_printf("\n");
	514	flush_user_windows();
	515
	516	prom_cmdline();
	517	}
	518
	519	int serial_console = -1;
	520	int stop_a_enabled = 1;
	521
	522	static int __init topology_init(void)
	523	{
	524	int i, err;
	525
	526	err = -ENOMEM;
4d45cbac DM	527
	528	/* Count the number of physically present processors in
	529	* the machine, even on uniprocessor, so that /proc/cpuinfo
	530	* output is consistent with 2.4.x
	531	*/
	532	ncpus_probed = 0;
	533	while (!cpu_find_by_instance(ncpus_probed, NULL, NULL))
	534	ncpus_probed++;
	535
a283a525	536	for_each_possible_cpu(i) {
9132983a ES	537	struct cpu p = kzalloc(sizeof(p), GFP_KERNEL);
9132983a ES	538	if (p) {
76b67ed9	539	register_cpu(p, i);
9132983a	540	err = 0;
1da177e4 LT	541	}
	542	}
	543
	544	return err;
	545	}
	546
	547	subsys_initcall(topology_init);