[mirror_ubuntu-artful-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/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

/* 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)
{
}

/* 
 * 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;
	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)
{
	extern void sun4v_hvapi_init(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++;
	}

	sun4v_hvapi_init();
}

#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(boot_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;
1da177e4 LT	76	#define BOOTME_DEBUG 0x1
1da177e4 LT	77
	78	/* Exported for mm/init.c:paging_init. */
	79	unsigned long cmdline_memory_size = 0;
	80
	81	static struct console prom_debug_console = {
	82	.name = "debug",
	83	.write = prom_console_write,
	84	.flags = CON_PRINTBUFFER,
	85	.index = -1,
	86	};
	87
	88	/* XXX Implement this at some point... */
	89	void kernel_enter_debugger(void)
	90	{
	91	}
	92
1da177e4 LT	93	/*
	94	* Process kernel command line switches that are specific to the
	95	* SPARC or that require special low-level processing.
	96	*/
	97	static void __init process_switch(char c)
	98	{
	99	switch (c) {
	100	case 'd':
	101	boot_flags \|= BOOTME_DEBUG;
	102	break;
	103	case 's':
1da177e4 LT	104	break;
	105	case 'h':
	106	prom_printf("boot_flags_init: Halt!\n");
	107	prom_halt();
	108	break;
	109	case 'p':
	110	/* Use PROM debug console. */
	111	register_console(&prom_debug_console);
	112	break;
816242da DM	113	case 'P':
	114	/* Force UltraSPARC-III P-Cache on. */
	115	if (tlb_type != cheetah) {
	116	printk("BOOT: Ignoring P-Cache force option.\n");
	117	break;
	118	}
	119	cheetah_pcache_forced_on = 1;
	120	add_taint(TAINT_MACHINE_CHECK);
	121	cheetah_enable_pcache();
	122	break;
	123
1da177e4 LT	124	default:
	125	printk("Unknown boot switch (-%c)\n", c);
	126	break;
	127	}
	128	}
	129
	130	static void __init process_console(char *commands)
	131	{
	132	serial_console = 0;
	133	commands += 8;
	134	/* Linux-style serial */
	135	if (!strncmp(commands, "ttyS", 4))
	136	serial_console = simple_strtoul(commands + 4, NULL, 10) + 1;
	137	else if (!strncmp(commands, "tty", 3)) {
	138	char c = *(commands + 3);
	139	/* Solaris-style serial */
	140	if (c == 'a' \|\| c == 'b') {
	141	serial_console = c - 'a' + 1;
	142	prom_printf ("Using /dev/tty%c as console.\n", c);
	143	}
	144	/* else Linux-style fbcon, not serial */
	145	}
	146	#if defined(CONFIG_PROM_CONSOLE)
	147	if (!strncmp(commands, "prom", 4)) {
	148	char *p;
	149
	150	for (p = commands - 8; p && p != ' '; p++)
	151	*p = ' ';
	152	conswitchp = &prom_con;
	153	}
	154	#endif
	155	}
	156
	157	static void __init boot_flags_init(char *commands)
	158	{
	159	while (*commands) {
	160	/* Move to the start of the next "argument". */
	161	while (commands && commands == ' ')
	162	commands++;
	163
	164	/* Process any command switches, otherwise skip it. */
	165	if (*commands == '\0')
	166	break;
	167	if (*commands == '-') {
	168	commands++;
	169	while (commands && commands != ' ')
	170	process_switch(*commands++);
	171	continue;
	172	}
	173	if (!strncmp(commands, "console=", 8)) {
	174	process_console(commands);
	175	} else if (!strncmp(commands, "mem=", 4)) {
	176	/*
	177	* "mem=XXX[kKmM]" overrides the PROM-reported
	178	* memory size.
	179	*/
	180	cmdline_memory_size = simple_strtoul(commands + 4,
	181	&commands, 0);
	182	if (commands == 'K' \|\| commands == 'k') {
	183	cmdline_memory_size <<= 10;
	184	commands++;
	185	} else if (commands=='M' \|\| commands=='m') {
	186	cmdline_memory_size <<= 20;
	187	commands++;
188	}
189	}
190	while (commands && commands != ' ')
191	commands++;
192	}
193	}
194
1da177e4 LT	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
	208	static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };
	209
951bc82c	210	void __init per_cpu_patch(void)
92704a1c	211	{
92704a1c DM	212	struct cpuid_patch_entry *p;
	213	unsigned long ver;
	214	int is_jbus;
	215
	216	if (tlb_type == spitfire && !this_is_starfire)
	217	return;
	218
d82ace7d DM	219	is_jbus = 0;
	220	if (tlb_type != hypervisor) {
	221	__asm__ ("rdpr %%ver, %0" : "=r" (ver));
ebd8c56c DM	222	is_jbus = ((ver >> 32UL) == __JALAPENO_ID \|\|
ebd8c56c DM	223	(ver >> 32UL) == __SERRANO_ID);
d82ace7d	224	}
92704a1c DM	225
	226	p = &__cpuid_patch;
	227	while (p < &__cpuid_patch_end) {
	228	unsigned long addr = p->addr;
	229	unsigned int *insns;
	230
	231	switch (tlb_type) {
	232	case spitfire:
	233	insns = &p->starfire[0];
	234	break;
	235	case cheetah:
	236	case cheetah_plus:
	237	if (is_jbus)
	238	insns = &p->cheetah_jbus[0];
	239	else
	240	insns = &p->cheetah_safari[0];
	241	break;
d96b8153 DM	242	case hypervisor:
	243	insns = &p->sun4v[0];
	244	break;
92704a1c DM	245	default:
	246	prom_printf("Unknown cpu type, halting.\n");
	247	prom_halt();
	248	};
	249
	250	(unsigned int ) (addr + 0) = insns[0];
840aaef8	251	wmb();
92704a1c DM	252	__asm__ __volatile__("flush %0" : : "r" (addr + 0));
	253
	254	(unsigned int ) (addr + 4) = insns[1];
840aaef8	255	wmb();
92704a1c DM	256	__asm__ __volatile__("flush %0" : : "r" (addr + 4));
	257
	258	(unsigned int ) (addr + 8) = insns[2];
840aaef8	259	wmb();
92704a1c DM	260	__asm__ __volatile__("flush %0" : : "r" (addr + 8));
	261
	262	(unsigned int ) (addr + 12) = insns[3];
840aaef8	263	wmb();
92704a1c DM	264	__asm__ __volatile__("flush %0" : : "r" (addr + 12));
	265
	266	p++;
	267	}
92704a1c DM	268	}
92704a1c DM	269
951bc82c	270	void __init sun4v_patch(void)
936f482a	271	{
c7754d46	272	extern void sun4v_hvapi_init(void);
df7d6aec DM	273	struct sun4v_1insn_patch_entry *p1;
df7d6aec DM	274	struct sun4v_2insn_patch_entry *p2;
936f482a DM	275
	276	if (tlb_type != hypervisor)
	277	return;
	278
df7d6aec DM	279	p1 = &__sun4v_1insn_patch;
df7d6aec DM	280	while (p1 < &__sun4v_1insn_patch_end) {
45fec05f	281	unsigned long addr = p1->addr;
936f482a	282
45fec05f	283	(unsigned int ) (addr + 0) = p1->insn;
840aaef8	284	wmb();
936f482a DM	285	__asm__ __volatile__("flush %0" : : "r" (addr + 0));
936f482a DM	286
45fec05f DM	287	p1++;
	288	}
	289
df7d6aec DM	290	p2 = &__sun4v_2insn_patch;
df7d6aec DM	291	while (p2 < &__sun4v_2insn_patch_end) {
45fec05f DM	292	unsigned long addr = p2->addr;
	293
	294	(unsigned int ) (addr + 0) = p2->insns[0];
840aaef8	295	wmb();
45fec05f DM	296	__asm__ __volatile__("flush %0" : : "r" (addr + 0));
45fec05f DM	297
fd05068d	298	(unsigned int ) (addr + 4) = p2->insns[1];
840aaef8	299	wmb();
45fec05f DM	300	__asm__ __volatile__("flush %0" : : "r" (addr + 4));
	301
	302	p2++;
936f482a	303	}
c7754d46 DM	304
c7754d46 DM	305	sun4v_hvapi_init();
936f482a DM	306	}
936f482a DM	307
951bc82c DM	308	#ifdef CONFIG_SMP
	309	void __init boot_cpu_id_too_large(int cpu)
	310	{
	311	prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n",
	312	cpu, NR_CPUS);
	313	prom_halt();
	314	}
	315	#endif
	316
1da177e4 LT	317	void __init setup_arch(char **cmdline_p)
1da177e4 LT	318	{
1da177e4 LT	319	/* Initialize PROM console and command line. */
1da177e4 LT	320	*cmdline_p = prom_getbootargs();
383464c0	321	strcpy(boot_command_line, *cmdline_p);
1da177e4	322
3a8c069d DM	323	if (tlb_type == hypervisor)
	324	printk("ARCH: SUN4V\n");
	325	else
	326	printk("ARCH: SUN4U\n");
1da177e4 LT	327
	328	#ifdef CONFIG_DUMMY_CONSOLE
	329	conswitchp = &dummy_con;
	330	#elif defined(CONFIG_PROM_CONSOLE)
	331	conswitchp = &prom_con;
	332	#endif
	333
1da177e4 LT	334	boot_flags_init(*cmdline_p);
	335
	336	idprom_init();
1da177e4 LT	337
	338	if (!root_flags)
	339	root_mountflags &= ~MS_RDONLY;
	340	ROOT_DEV = old_decode_dev(root_dev);
467418f3	341	#ifdef CONFIG_BLK_DEV_RAM
1da177e4 LT	342	rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;
	343	rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0);
	344	rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0);
	345	#endif
	346
f3169641	347	task_thread_info(&init_task)->kregs = &fake_swapper_regs;
1da177e4 LT	348
	349	#ifdef CONFIG_IP_PNP
	350	if (!ic_set_manually) {
	351	int chosen = prom_finddevice ("/chosen");
	352	u32 cl, sv, gw;
	353
	354	cl = prom_getintdefault (chosen, "client-ip", 0);
	355	sv = prom_getintdefault (chosen, "server-ip", 0);
	356	gw = prom_getintdefault (chosen, "gateway-ip", 0);
	357	if (cl && sv) {
	358	ic_myaddr = cl;
	359	ic_servaddr = sv;
	360	if (gw)
	361	ic_gateway = gw;
	362	#if defined(CONFIG_IP_PNP_BOOTP) \|\| defined(CONFIG_IP_PNP_RARP)
	363	ic_proto_enabled = 0;
	364	#endif
	365	}
	366	}
	367	#endif
	368
56fb4df6	369	/* Get boot processor trap_block[] setup. */
72aff53f	370	init_cur_cpu_trap(current_thread_info());
52845cdb DM	371
52845cdb DM	372	paging_init();
765b5f32 DM	373
765b5f32 DM	374	smp_setup_cpu_possible_map();
1da177e4 LT	375	}
	376
	377	static int __init set_preferred_console(void)
	378	{
	379	int idev, odev;
	380
	381	/* The user has requested a console so this is already set up. */
	382	if (serial_console >= 0)
	383	return -EBUSY;
	384
	385	idev = prom_query_input_device();
	386	odev = prom_query_output_device();
	387	if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) {
	388	serial_console = 0;
	389	} else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) {
	390	serial_console = 1;
	391	} else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) {
	392	serial_console = 2;
c126cf80 ED	393	} else if (idev == PROMDEV_IRSC && odev == PROMDEV_ORSC) {
c126cf80 ED	394	serial_console = 3;
1a7a242c DM	395	} else if (idev == PROMDEV_IVCONS && odev == PROMDEV_OVCONS) {
	396	/* sunhv_console_init() doesn't check the serial_console
	397	* value anyways...
	398	*/
	399	serial_console = 4;
d5a2aa24	400	return add_preferred_console("ttyHV", 0, NULL);
1da177e4 LT	401	} else {
	402	prom_printf("Inconsistent console: "
	403	"input %d, output %d\n",
	404	idev, odev);
	405	prom_halt();
	406	}
	407
	408	if (serial_console)
	409	return add_preferred_console("ttyS", serial_console - 1, NULL);
	410
	411	return -ENODEV;
	412	}
	413	console_initcall(set_preferred_console);
	414
	415	/* BUFFER is PAGE_SIZE bytes long. */
	416
	417	extern char *sparc_cpu_type;
	418	extern char *sparc_fpu_type;
	419
	420	extern void smp_info(struct seq_file *);
	421	extern void smp_bogo(struct seq_file *);
	422	extern void mmu_info(struct seq_file *);
	423
80dc0d6b DM	424	unsigned int dcache_parity_tl1_occurred;
	425	unsigned int icache_parity_tl1_occurred;
	426
4d45cbac DM	427	static int ncpus_probed;
4d45cbac DM	428
1da177e4 LT	429	static int show_cpuinfo(struct seq_file m, void __unused)
	430	{
	431	seq_printf(m,
	432	"cpu\t\t: %s\n"
	433	"fpu\t\t: %s\n"
90a6646b DM	434	"prom\t\t: %s\n"
90a6646b DM	435	"type\t\t: %s\n"
4d45cbac DM	436	"ncpus probed\t: %d\n"
4d45cbac DM	437	"ncpus active\t: %d\n"
80dc0d6b DM	438	"D$ parity tl1\t: %u\n"
80dc0d6b DM	439	"I$ parity tl1\t: %u\n"
1da177e4 LT	440	#ifndef CONFIG_SMP
	441	"Cpu0Bogo\t: %lu.%02lu\n"
	442	"Cpu0ClkTck\t: %016lx\n"
	443	#endif
	444	,
	445	sparc_cpu_type,
	446	sparc_fpu_type,
90a6646b DM	447	prom_version,
	448	((tlb_type == hypervisor) ?
	449	"sun4v" :
	450	"sun4u"),
4d45cbac DM	451	ncpus_probed,
4d45cbac DM	452	num_online_cpus(),
80dc0d6b DM	453	dcache_parity_tl1_occurred,
80dc0d6b DM	454	icache_parity_tl1_occurred
1da177e4 LT	455	#ifndef CONFIG_SMP
	456	, cpu_data(0).udelay_val/(500000/HZ),
	457	(cpu_data(0).udelay_val/(5000/HZ)) % 100,
	458	cpu_data(0).clock_tick
	459	#endif
	460	);
	461	#ifdef CONFIG_SMP
	462	smp_bogo(m);
	463	#endif
	464	mmu_info(m);
	465	#ifdef CONFIG_SMP
	466	smp_info(m);
	467	#endif
	468	return 0;
	469	}
	470
	471	static void c_start(struct seq_file m, loff_t *pos)
	472	{
	473	/* The pointer we are returning is arbitrary,
	474	* it just has to be non-NULL and not IS_ERR
	475	* in the success case.
	476	*/
	477	return *pos == 0 ? &c_start : NULL;
	478	}
	479
	480	static void c_next(struct seq_file m, void v, loff_t pos)
	481	{
	482	++*pos;
	483	return c_start(m, pos);
	484	}
	485
	486	static void c_stop(struct seq_file m, void v)
	487	{
	488	}
	489
	490	struct seq_operations cpuinfo_op = {
	491	.start =c_start,
	492	.next = c_next,
	493	.stop = c_stop,
	494	.show = show_cpuinfo,
	495	};
	496
	497	extern int stop_a_enabled;
	498
	499	void sun_do_break(void)
	500	{
	501	if (!stop_a_enabled)
	502	return;
	503
	504	prom_printf("\n");
	505	flush_user_windows();
	506
	507	prom_cmdline();
	508	}
	509
	510	int serial_console = -1;
	511	int stop_a_enabled = 1;
	512
	513	static int __init topology_init(void)
	514	{
	515	int i, err;
	516
	517	err = -ENOMEM;
4d45cbac DM	518
	519	/* Count the number of physically present processors in
	520	* the machine, even on uniprocessor, so that /proc/cpuinfo
	521	* output is consistent with 2.4.x
	522	*/
	523	ncpus_probed = 0;
	524	while (!cpu_find_by_instance(ncpus_probed, NULL, NULL))
	525	ncpus_probed++;
	526
a283a525	527	for_each_possible_cpu(i) {
9132983a ES	528	struct cpu p = kzalloc(sizeof(p), GFP_KERNEL);
9132983a ES	529	if (p) {
76b67ed9	530	register_cpu(p, i);
9132983a	531	err = 0;
1da177e4 LT	532	}
	533	}
	534
	535	return err;
	536	}
	537
	538	subsys_initcall(topology_init);