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