[deliverable/linux.git] / arch / sparc / prom / misc_64.c

/*
 * misc.c:  Miscellaneous prom functions that don't belong
 *          anywhere else.
 *
 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
 * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/module.h>

#include <asm/openprom.h>
#include <asm/oplib.h>
#include <asm/ldc.h>

static int prom_service_exists(const char *service_name)
{
	unsigned long args[5];

	args[0] = (unsigned long) "test";
	args[1] = 1;
	args[2] = 1;
	args[3] = (unsigned long) service_name;
	args[4] = (unsigned long) -1;

	p1275_cmd_direct(args);

	if (args[4])
		return 0;
	return 1;
}

void prom_sun4v_guest_soft_state(void)
{
	const char *svc = "SUNW,soft-state-supported";
	unsigned long args[3];

	if (!prom_service_exists(svc))
		return;
	args[0] = (unsigned long) svc;
	args[1] = 0;
	args[2] = 0;
	p1275_cmd_direct(args);
}

/* Reset and reboot the machine with the command 'bcommand'. */
void prom_reboot(const char *bcommand)
{
	unsigned long args[4];

#ifdef CONFIG_SUN_LDOMS
	if (ldom_domaining_enabled)
		ldom_reboot(bcommand);
#endif
	args[0] = (unsigned long) "boot";
	args[1] = 1;
	args[2] = 0;
	args[3] = (unsigned long) bcommand;

	p1275_cmd_direct(args);
}

/* Forth evaluate the expression contained in 'fstring'. */
void prom_feval(const char *fstring)
{
	unsigned long args[5];

	if (!fstring || fstring[0] == 0)
		return;
	args[0] = (unsigned long) "interpret";
	args[1] = 1;
	args[2] = 1;
	args[3] = (unsigned long) fstring;
	args[4] = (unsigned long) -1;

	p1275_cmd_direct(args);
}
EXPORT_SYMBOL(prom_feval);

/* Drop into the prom, with the chance to continue with the 'go'
 * prom command.
 */
void prom_cmdline(void)
{
	unsigned long args[3];
	unsigned long flags;

	local_irq_save(flags);

#ifdef CONFIG_SMP
	smp_capture();
#endif

	args[0] = (unsigned long) "enter";
	args[1] = 0;
	args[2] = 0;

	p1275_cmd_direct(args);

#ifdef CONFIG_SMP
	smp_release();
#endif

	local_irq_restore(flags);
}

/* Drop into the prom, but completely terminate the program.
 * No chance of continuing.
 */
void notrace prom_halt(void)
{
	unsigned long args[3];

#ifdef CONFIG_SUN_LDOMS
	if (ldom_domaining_enabled)
		ldom_power_off();
#endif
again:
	args[0] = (unsigned long) "exit";
	args[1] = 0;
	args[2] = 0;
	p1275_cmd_direct(args);
	goto again; /* PROM is out to get me -DaveM */
}

void prom_halt_power_off(void)
{
	unsigned long args[3];

#ifdef CONFIG_SUN_LDOMS
	if (ldom_domaining_enabled)
		ldom_power_off();
#endif
	args[0] = (unsigned long) "SUNW,power-off";
	args[1] = 0;
	args[2] = 0;
	p1275_cmd_direct(args);

	/* if nothing else helps, we just halt */
	prom_halt();
}

/* Get the idprom and stuff it into buffer 'idbuf'.  Returns the
 * format type.  'num_bytes' is the number of bytes that your idbuf
 * has space for.  Returns 0xff on error.
 */
unsigned char prom_get_idprom(char *idbuf, int num_bytes)
{
	int len;

	len = prom_getproplen(prom_root_node, "idprom");
	if ((len >num_bytes) || (len == -1))
		return 0xff;
	if (!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
		return idbuf[0];

	return 0xff;
}

int prom_get_mmu_ihandle(void)
{
	phandle node;
	int ret;

	if (prom_mmu_ihandle_cache != 0)
		return prom_mmu_ihandle_cache;

	node = prom_finddevice(prom_chosen_path);
	ret = prom_getint(node, prom_mmu_name);
	if (ret == -1 || ret == 0)
		prom_mmu_ihandle_cache = -1;
	else
		prom_mmu_ihandle_cache = ret;

	return ret;
}

static int prom_get_memory_ihandle(void)
{
	static int memory_ihandle_cache;
	phandle node;
	int ret;

	if (memory_ihandle_cache != 0)
		return memory_ihandle_cache;

	node = prom_finddevice("/chosen");
	ret = prom_getint(node, "memory");
	if (ret == -1 || ret == 0)
		memory_ihandle_cache = -1;
	else
		memory_ihandle_cache = ret;

	return ret;
}

/* Load explicit I/D TLB entries. */
static long tlb_load(const char *type, unsigned long index,
		     unsigned long tte_data, unsigned long vaddr)
{
	unsigned long args[9];

	args[0] = (unsigned long) prom_callmethod_name;
	args[1] = 5;
	args[2] = 1;
	args[3] = (unsigned long) type;
	args[4] = (unsigned int) prom_get_mmu_ihandle();
	args[5] = vaddr;
	args[6] = tte_data;
	args[7] = index;
	args[8] = (unsigned long) -1;

	p1275_cmd_direct(args);

	return (long) args[8];
}

long prom_itlb_load(unsigned long index,
		    unsigned long tte_data,
		    unsigned long vaddr)
{
	return tlb_load("SUNW,itlb-load", index, tte_data, vaddr);
}

long prom_dtlb_load(unsigned long index,
		    unsigned long tte_data,
		    unsigned long vaddr)
{
	return tlb_load("SUNW,dtlb-load", index, tte_data, vaddr);
}

int prom_map(int mode, unsigned long size,
	     unsigned long vaddr, unsigned long paddr)
{
	unsigned long args[11];
	int ret;

	args[0] = (unsigned long) prom_callmethod_name;
	args[1] = 7;
	args[2] = 1;
	args[3] = (unsigned long) prom_map_name;
	args[4] = (unsigned int) prom_get_mmu_ihandle();
	args[5] = (unsigned int) mode;
	args[6] = size;
	args[7] = vaddr;
	args[8] = 0;
	args[9] = paddr;
	args[10] = (unsigned long) -1;

	p1275_cmd_direct(args);

	ret = (int) args[10];
	if (ret == 0)
		ret = -1;
	return ret;
}

void prom_unmap(unsigned long size, unsigned long vaddr)
{
	unsigned long args[7];

	args[0] = (unsigned long) prom_callmethod_name;
	args[1] = 4;
	args[2] = 0;
	args[3] = (unsigned long) prom_unmap_name;
	args[4] = (unsigned int) prom_get_mmu_ihandle();
	args[5] = size;
	args[6] = vaddr;

	p1275_cmd_direct(args);
}

/* Set aside physical memory which is not touched or modified
 * across soft resets.
 */
int prom_retain(const char *name, unsigned long size,
		unsigned long align, unsigned long *paddr)
{
	unsigned long args[11];

	args[0] = (unsigned long) prom_callmethod_name;
	args[1] = 5;
	args[2] = 3;
	args[3] = (unsigned long) "SUNW,retain";
	args[4] = (unsigned int) prom_get_memory_ihandle();
	args[5] = align;
	args[6] = size;
	args[7] = (unsigned long) name;
	args[8] = (unsigned long) -1;
	args[9] = (unsigned long) -1;
	args[10] = (unsigned long) -1;

	p1275_cmd_direct(args);

	if (args[8])
		return (int) args[8];

	/* Next we get "phys_high" then "phys_low".  On 64-bit
	 * the phys_high cell is don't care since the phys_low
	 * cell has the full value.
	 */
	*paddr = args[10];

	return 0;
}

/* Get "Unumber" string for the SIMM at the given
 * memory address.  Usually this will be of the form
 * "Uxxxx" where xxxx is a decimal number which is
 * etched into the motherboard next to the SIMM slot
 * in question.
 */
int prom_getunumber(int syndrome_code,
		    unsigned long phys_addr,
		    char *buf, int buflen)
{
	unsigned long args[12];

	args[0] = (unsigned long) prom_callmethod_name;
	args[1] = 7;
	args[2] = 2;
	args[3] = (unsigned long) "SUNW,get-unumber";
	args[4] = (unsigned int) prom_get_memory_ihandle();
	args[5] = buflen;
	args[6] = (unsigned long) buf;
	args[7] = 0;
	args[8] = phys_addr;
	args[9] = (unsigned int) syndrome_code;
	args[10] = (unsigned long) -1;
	args[11] = (unsigned long) -1;

	p1275_cmd_direct(args);

	return (int) args[10];
}

/* Power management extensions. */
void prom_sleepself(void)
{
	unsigned long args[3];

	args[0] = (unsigned long) "SUNW,sleep-self";
	args[1] = 0;
	args[2] = 0;
	p1275_cmd_direct(args);
}

int prom_sleepsystem(void)
{
	unsigned long args[4];

	args[0] = (unsigned long) "SUNW,sleep-system";
	args[1] = 0;
	args[2] = 1;
	args[3] = (unsigned long) -1;
	p1275_cmd_direct(args);

	return (int) args[3];
}

int prom_wakeupsystem(void)
{
	unsigned long args[4];

	args[0] = (unsigned long) "SUNW,wakeup-system";
	args[1] = 0;
	args[2] = 1;
	args[3] = (unsigned long) -1;
	p1275_cmd_direct(args);

	return (int) args[3];
}

#ifdef CONFIG_SMP
void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg)
{
	unsigned long args[6];

	args[0] = (unsigned long) "SUNW,start-cpu";
	args[1] = 3;
	args[2] = 0;
	args[3] = (unsigned int) cpunode;
	args[4] = pc;
	args[5] = arg;
	p1275_cmd_direct(args);
}

void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg)
{
	unsigned long args[6];

	args[0] = (unsigned long) "SUNW,start-cpu-by-cpuid";
	args[1] = 3;
	args[2] = 0;
	args[3] = (unsigned int) cpuid;
	args[4] = pc;
	args[5] = arg;
	p1275_cmd_direct(args);
}

void prom_stopcpu_cpuid(int cpuid)
{
	unsigned long args[4];

	args[0] = (unsigned long) "SUNW,stop-cpu-by-cpuid";
	args[1] = 1;
	args[2] = 0;
	args[3] = (unsigned int) cpuid;
	p1275_cmd_direct(args);
}

void prom_stopself(void)
{
	unsigned long args[3];

	args[0] = (unsigned long) "SUNW,stop-self";
	args[1] = 0;
	args[2] = 0;
	p1275_cmd_direct(args);
}

void prom_idleself(void)
{
	unsigned long args[3];

	args[0] = (unsigned long) "SUNW,idle-self";
	args[1] = 0;
	args[2] = 0;
	p1275_cmd_direct(args);
}

void prom_resumecpu(int cpunode)
{
	unsigned long args[4];

	args[0] = (unsigned long) "SUNW,resume-cpu";
	args[1] = 1;
	args[2] = 0;
	args[3] = (unsigned int) cpunode;
	p1275_cmd_direct(args);
}
#endif
Commit	Line	Data
b00dc837	1	/*
1da177e4 LT	2	* misc.c: Miscellaneous prom functions that don't belong
	3	* anywhere else.
	4	*
	5	* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
	6	* Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
	7	*/
	8
1da177e4 LT	9	#include <linux/types.h>
	10	#include <linux/kernel.h>
	11	#include <linux/sched.h>
	12	#include <linux/interrupt.h>
	13	#include <linux/delay.h>
917c3660 SR	14	#include <linux/module.h>
917c3660 SR	15
1da177e4 LT	16	#include <asm/openprom.h>
1da177e4 LT	17	#include <asm/oplib.h>
b3e13fbe	18	#include <asm/ldc.h>
1da177e4	19
f7b5f55a	20	static int prom_service_exists(const char *service_name)
22d6a1cb	21	{
25edd694	22	unsigned long args[5];
22d6a1cb	23
25edd694 DM	24	args[0] = (unsigned long) "test";
	25	args[1] = 1;
	26	args[2] = 1;
	27	args[3] = (unsigned long) service_name;
	28	args[4] = (unsigned long) -1;
	29
	30	p1275_cmd_direct(args);
	31
	32	if (args[4])
22d6a1cb DM	33	return 0;
	34	return 1;
	35	}
	36
	37	void prom_sun4v_guest_soft_state(void)
	38	{
	39	const char *svc = "SUNW,soft-state-supported";
25edd694	40	unsigned long args[3];
22d6a1cb DM	41
	42	if (!prom_service_exists(svc))
	43	return;
25edd694 DM	44	args[0] = (unsigned long) svc;
	45	args[1] = 0;
	46	args[2] = 0;
	47	p1275_cmd_direct(args);
22d6a1cb DM	48	}
22d6a1cb DM	49
1da177e4	50	/* Reset and reboot the machine with the command 'bcommand'. */
bff06d55	51	void prom_reboot(const char *bcommand)
1da177e4	52	{
25edd694 DM	53	unsigned long args[4];
25edd694 DM	54
b3e13fbe DM	55	#ifdef CONFIG_SUN_LDOMS
	56	if (ldom_domaining_enabled)
	57	ldom_reboot(bcommand);
	58	#endif
25edd694 DM	59	args[0] = (unsigned long) "boot";
	60	args[1] = 1;
	61	args[2] = 0;
	62	args[3] = (unsigned long) bcommand;
	63
	64	p1275_cmd_direct(args);
1da177e4 LT	65	}
	66
	67	/* Forth evaluate the expression contained in 'fstring'. */
bff06d55	68	void prom_feval(const char *fstring)
1da177e4	69	{
25edd694 DM	70	unsigned long args[5];
25edd694 DM	71
1da177e4 LT	72	if (!fstring \|\| fstring[0] == 0)
1da177e4 LT	73	return;
25edd694 DM	74	args[0] = (unsigned long) "interpret";
	75	args[1] = 1;
	76	args[2] = 1;
	77	args[3] = (unsigned long) fstring;
	78	args[4] = (unsigned long) -1;
	79
	80	p1275_cmd_direct(args);
1da177e4	81	}
917c3660	82	EXPORT_SYMBOL(prom_feval);
1da177e4	83
1da177e4 LT	84	/* Drop into the prom, with the chance to continue with the 'go'
	85	* prom command.
	86	*/
	87	void prom_cmdline(void)
	88	{
25edd694	89	unsigned long args[3];
1da177e4 LT	90	unsigned long flags;
	91
	92	local_irq_save(flags);
	93
1da177e4 LT	94	#ifdef CONFIG_SMP
	95	smp_capture();
	96	#endif
	97
25edd694 DM	98	args[0] = (unsigned long) "enter";
	99	args[1] = 0;
	100	args[2] = 0;
	101
	102	p1275_cmd_direct(args);
1da177e4 LT	103
	104	#ifdef CONFIG_SMP
	105	smp_release();
	106	#endif
	107
1da177e4 LT	108	local_irq_restore(flags);
	109	}
	110
1da177e4 LT	111	/* Drop into the prom, but completely terminate the program.
	112	* No chance of continuing.
	113	*/
bd4352ca	114	void notrace prom_halt(void)
1da177e4	115	{
25edd694 DM	116	unsigned long args[3];
25edd694 DM	117
4f0234f4 DM	118	#ifdef CONFIG_SUN_LDOMS
	119	if (ldom_domaining_enabled)
	120	ldom_power_off();
	121	#endif
1da177e4	122	again:
25edd694 DM	123	args[0] = (unsigned long) "exit";
	124	args[1] = 0;
	125	args[2] = 0;
	126	p1275_cmd_direct(args);
1da177e4 LT	127	goto again; /* PROM is out to get me -DaveM */
	128	}
	129
	130	void prom_halt_power_off(void)
	131	{
25edd694 DM	132	unsigned long args[3];
25edd694 DM	133
4f0234f4 DM	134	#ifdef CONFIG_SUN_LDOMS
	135	if (ldom_domaining_enabled)
	136	ldom_power_off();
	137	#endif
25edd694 DM	138	args[0] = (unsigned long) "SUNW,power-off";
	139	args[1] = 0;
	140	args[2] = 0;
	141	p1275_cmd_direct(args);
1da177e4 LT	142
	143	/* if nothing else helps, we just halt */
	144	prom_halt();
	145	}
	146
1da177e4 LT	147	/* Get the idprom and stuff it into buffer 'idbuf'. Returns the
	148	* format type. 'num_bytes' is the number of bytes that your idbuf
	149	* has space for. Returns 0xff on error.
	150	*/
	151	unsigned char prom_get_idprom(char *idbuf, int num_bytes)
	152	{
	153	int len;
	154
	155	len = prom_getproplen(prom_root_node, "idprom");
	156	if ((len >num_bytes) \|\| (len == -1))
	157	return 0xff;
	158	if (!prom_getproperty(prom_root_node, "idprom", idbuf, num_bytes))
	159	return idbuf[0];
	160
	161	return 0xff;
	162	}
	163
1da177e4 LT	164	int prom_get_mmu_ihandle(void)
1da177e4 LT	165	{
8d125562 AS	166	phandle node;
8d125562 AS	167	int ret;
1da177e4	168
bff06d55 DM	169	if (prom_mmu_ihandle_cache != 0)
bff06d55 DM	170	return prom_mmu_ihandle_cache;
1da177e4	171
bff06d55 DM	172	node = prom_finddevice(prom_chosen_path);
bff06d55 DM	173	ret = prom_getint(node, prom_mmu_name);
1da177e4	174	if (ret == -1 \|\| ret == 0)
bff06d55	175	prom_mmu_ihandle_cache = -1;
1da177e4	176	else
bff06d55	177	prom_mmu_ihandle_cache = ret;
1da177e4 LT	178
	179	return ret;
	180	}
	181
	182	static int prom_get_memory_ihandle(void)
	183	{
	184	static int memory_ihandle_cache;
8d125562 AS	185	phandle node;
8d125562 AS	186	int ret;
1da177e4 LT	187
	188	if (memory_ihandle_cache != 0)
	189	return memory_ihandle_cache;
	190
	191	node = prom_finddevice("/chosen");
	192	ret = prom_getint(node, "memory");
	193	if (ret == -1 \|\| ret == 0)
	194	memory_ihandle_cache = -1;
	195	else
	196	memory_ihandle_cache = ret;
	197
	198	return ret;
	199	}
	200
	201	/* Load explicit I/D TLB entries. */
25edd694 DM	202	static long tlb_load(const char *type, unsigned long index,
	203	unsigned long tte_data, unsigned long vaddr)
	204	{
	205	unsigned long args[9];
	206
	207	args[0] = (unsigned long) prom_callmethod_name;
	208	args[1] = 5;
	209	args[2] = 1;
	210	args[3] = (unsigned long) type;
	211	args[4] = (unsigned int) prom_get_mmu_ihandle();
	212	args[5] = vaddr;
	213	args[6] = tte_data;
	214	args[7] = index;
	215	args[8] = (unsigned long) -1;
	216
	217	p1275_cmd_direct(args);
	218
	219	return (long) args[8];
	220	}
	221
1da177e4 LT	222	long prom_itlb_load(unsigned long index,
	223	unsigned long tte_data,
	224	unsigned long vaddr)
	225	{
25edd694	226	return tlb_load("SUNW,itlb-load", index, tte_data, vaddr);
1da177e4 LT	227	}
	228
	229	long prom_dtlb_load(unsigned long index,
	230	unsigned long tte_data,
	231	unsigned long vaddr)
	232	{
25edd694	233	return tlb_load("SUNW,dtlb-load", index, tte_data, vaddr);
1da177e4 LT	234	}
	235
	236	int prom_map(int mode, unsigned long size,
	237	unsigned long vaddr, unsigned long paddr)
	238	{
25edd694 DM	239	unsigned long args[11];
	240	int ret;
	241
	242	args[0] = (unsigned long) prom_callmethod_name;
	243	args[1] = 7;
	244	args[2] = 1;
	245	args[3] = (unsigned long) prom_map_name;
	246	args[4] = (unsigned int) prom_get_mmu_ihandle();
	247	args[5] = (unsigned int) mode;
	248	args[6] = size;
	249	args[7] = vaddr;
	250	args[8] = 0;
	251	args[9] = paddr;
	252	args[10] = (unsigned long) -1;
	253
	254	p1275_cmd_direct(args);
	255
	256	ret = (int) args[10];
1da177e4 LT	257	if (ret == 0)
	258	ret = -1;
	259	return ret;
	260	}
	261
	262	void prom_unmap(unsigned long size, unsigned long vaddr)
	263	{
25edd694 DM	264	unsigned long args[7];
	265
	266	args[0] = (unsigned long) prom_callmethod_name;
	267	args[1] = 4;
	268	args[2] = 0;
	269	args[3] = (unsigned long) prom_unmap_name;
	270	args[4] = (unsigned int) prom_get_mmu_ihandle();
	271	args[5] = size;
	272	args[6] = vaddr;
	273
	274	p1275_cmd_direct(args);
1da177e4 LT	275	}
	276
	277	/* Set aside physical memory which is not touched or modified
	278	* across soft resets.
	279	*/
25edd694 DM	280	int prom_retain(const char *name, unsigned long size,
25edd694 DM	281	unsigned long align, unsigned long *paddr)
1da177e4	282	{
25edd694 DM	283	unsigned long args[11];
	284
	285	args[0] = (unsigned long) prom_callmethod_name;
	286	args[1] = 5;
	287	args[2] = 3;
	288	args[3] = (unsigned long) "SUNW,retain";
	289	args[4] = (unsigned int) prom_get_memory_ihandle();
	290	args[5] = align;
	291	args[6] = size;
	292	args[7] = (unsigned long) name;
	293	args[8] = (unsigned long) -1;
	294	args[9] = (unsigned long) -1;
	295	args[10] = (unsigned long) -1;
	296
	297	p1275_cmd_direct(args);
	298
	299	if (args[8])
	300	return (int) args[8];
	301
	302	/* Next we get "phys_high" then "phys_low". On 64-bit
	303	* the phys_high cell is don't care since the phys_low
	304	* cell has the full value.
1da177e4	305	*/
25edd694	306	*paddr = args[10];
1da177e4	307
25edd694	308	return 0;
1da177e4 LT	309	}
	310
	311	/* Get "Unumber" string for the SIMM at the given
	312	* memory address. Usually this will be of the form
	313	* "Uxxxx" where xxxx is a decimal number which is
	314	* etched into the motherboard next to the SIMM slot
	315	* in question.
	316	*/
	317	int prom_getunumber(int syndrome_code,
	318	unsigned long phys_addr,
	319	char *buf, int buflen)
	320	{
25edd694 DM	321	unsigned long args[12];
	322
	323	args[0] = (unsigned long) prom_callmethod_name;
	324	args[1] = 7;
	325	args[2] = 2;
	326	args[3] = (unsigned long) "SUNW,get-unumber";
	327	args[4] = (unsigned int) prom_get_memory_ihandle();
	328	args[5] = buflen;
	329	args[6] = (unsigned long) buf;
	330	args[7] = 0;
	331	args[8] = phys_addr;
	332	args[9] = (unsigned int) syndrome_code;
	333	args[10] = (unsigned long) -1;
	334	args[11] = (unsigned long) -1;
	335
	336	p1275_cmd_direct(args);
	337
	338	return (int) args[10];
1da177e4 LT	339	}
	340
	341	/* Power management extensions. */
	342	void prom_sleepself(void)
	343	{
25edd694 DM	344	unsigned long args[3];
	345
	346	args[0] = (unsigned long) "SUNW,sleep-self";
	347	args[1] = 0;
	348	args[2] = 0;
	349	p1275_cmd_direct(args);
1da177e4 LT	350	}
	351
	352	int prom_sleepsystem(void)
	353	{
25edd694 DM	354	unsigned long args[4];
	355
	356	args[0] = (unsigned long) "SUNW,sleep-system";
	357	args[1] = 0;
	358	args[2] = 1;
	359	args[3] = (unsigned long) -1;
	360	p1275_cmd_direct(args);
	361
	362	return (int) args[3];
1da177e4 LT	363	}
	364
	365	int prom_wakeupsystem(void)
	366	{
25edd694 DM	367	unsigned long args[4];
	368
	369	args[0] = (unsigned long) "SUNW,wakeup-system";
	370	args[1] = 0;
	371	args[2] = 1;
	372	args[3] = (unsigned long) -1;
	373	p1275_cmd_direct(args);
	374
	375	return (int) args[3];
1da177e4 LT	376	}
	377
	378	#ifdef CONFIG_SMP
7890f794	379	void prom_startcpu(int cpunode, unsigned long pc, unsigned long arg)
1da177e4	380	{
25edd694 DM	381	unsigned long args[6];
	382
	383	args[0] = (unsigned long) "SUNW,start-cpu";
	384	args[1] = 3;
	385	args[2] = 0;
	386	args[3] = (unsigned int) cpunode;
	387	args[4] = pc;
	388	args[5] = arg;
	389	p1275_cmd_direct(args);
7890f794 DM	390	}
	391
	392	void prom_startcpu_cpuid(int cpuid, unsigned long pc, unsigned long arg)
	393	{
25edd694 DM	394	unsigned long args[6];
	395
	396	args[0] = (unsigned long) "SUNW,start-cpu-by-cpuid";
	397	args[1] = 3;
	398	args[2] = 0;
	399	args[3] = (unsigned int) cpuid;
	400	args[4] = pc;
	401	args[5] = arg;
	402	p1275_cmd_direct(args);
7890f794 DM	403	}
	404
	405	void prom_stopcpu_cpuid(int cpuid)
	406	{
25edd694 DM	407	unsigned long args[4];
	408
	409	args[0] = (unsigned long) "SUNW,stop-cpu-by-cpuid";
	410	args[1] = 1;
	411	args[2] = 0;
	412	args[3] = (unsigned int) cpuid;
	413	p1275_cmd_direct(args);
1da177e4 LT	414	}
	415
	416	void prom_stopself(void)
	417	{
25edd694 DM	418	unsigned long args[3];
	419
	420	args[0] = (unsigned long) "SUNW,stop-self";
	421	args[1] = 0;
	422	args[2] = 0;
	423	p1275_cmd_direct(args);
1da177e4 LT	424	}
	425
	426	void prom_idleself(void)
	427	{
25edd694 DM	428	unsigned long args[3];
	429
	430	args[0] = (unsigned long) "SUNW,idle-self";
	431	args[1] = 0;
	432	args[2] = 0;
	433	p1275_cmd_direct(args);
1da177e4 LT	434	}
	435
	436	void prom_resumecpu(int cpunode)
	437	{
25edd694 DM	438	unsigned long args[4];
	439
	440	args[0] = (unsigned long) "SUNW,resume-cpu";
	441	args[1] = 1;
	442	args[2] = 0;
	443	args[3] = (unsigned int) cpunode;
	444	p1275_cmd_direct(args);
1da177e4 LT	445	}
1da177e4 LT	446	#endif