[linux-2.6-block.git] / arch / mips / sibyte / cfe / setup.c

/*
 * Copyright (C) 2000, 2001, 2002, 2003 Broadcom Corporation
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/linkage.h>
#include <linux/mm.h>
#include <linux/blkdev.h>
#include <linux/bootmem.h>
#include <linux/pm.h>
#include <linux/smp.h>

#include <asm/bootinfo.h>
#include <asm/reboot.h>
#include <asm/sibyte/board.h>
#include <asm/smp-ops.h>

#include <asm/fw/cfe/cfe_api.h>
#include <asm/fw/cfe/cfe_error.h>

/* Max ram addressable in 32-bit segments */
#ifdef CONFIG_64BIT
#define MAX_RAM_SIZE (~0ULL)
#else
#ifdef CONFIG_HIGHMEM
#ifdef CONFIG_64BIT_PHYS_ADDR
#define MAX_RAM_SIZE (~0ULL)
#else
#define MAX_RAM_SIZE (0xffffffffULL)
#endif
#else
#define MAX_RAM_SIZE (0x1fffffffULL)
#endif
#endif

#define SIBYTE_MAX_MEM_REGIONS 8
phys_t board_mem_region_addrs[SIBYTE_MAX_MEM_REGIONS];
phys_t board_mem_region_sizes[SIBYTE_MAX_MEM_REGIONS];
unsigned int board_mem_region_count;

int cfe_cons_handle;

#ifdef CONFIG_BLK_DEV_INITRD
extern unsigned long initrd_start, initrd_end;
#endif

#ifdef CONFIG_KGDB
extern int kgdb_port;
#endif

static void __noreturn cfe_linux_exit(void *arg)
{
	int warm = *(int *)arg;

	if (smp_processor_id()) {
		static int reboot_smp;

		/* Don't repeat the process from another CPU */
		if (!reboot_smp) {
			/* Get CPU 0 to do the cfe_exit */
			reboot_smp = 1;
			smp_call_function(cfe_linux_exit, arg, 1, 0);
		}
	} else {
		printk("Passing control back to CFE...\n");
		cfe_exit(warm, 0);
		printk("cfe_exit returned??\n");
	}
	while (1);
}

static void __noreturn cfe_linux_restart(char *command)
{
	static const int zero;

	cfe_linux_exit((void *)&zero);
}

static void __noreturn cfe_linux_halt(void)
{
	static const int one = 1;

	cfe_linux_exit((void *)&one);
}

static __init void prom_meminit(void)
{
	u64 addr, size, type; /* regardless of 64BIT_PHYS_ADDR */
	int mem_flags = 0;
	unsigned int idx;
	int rd_flag;
#ifdef CONFIG_BLK_DEV_INITRD
	unsigned long initrd_pstart;
	unsigned long initrd_pend;

	initrd_pstart = CPHYSADDR(initrd_start);
	initrd_pend = CPHYSADDR(initrd_end);
	if (initrd_start &&
	    ((initrd_pstart > MAX_RAM_SIZE)
	     || (initrd_pend > MAX_RAM_SIZE))) {
		panic("initrd out of addressable memory");
	}

#endif /* INITRD */

	for (idx = 0; cfe_enummem(idx, mem_flags, &addr, &size, &type) != CFE_ERR_NOMORE;
	     idx++) {
		rd_flag = 0;
		if (type == CFE_MI_AVAILABLE) {
			/*
			 * See if this block contains (any portion of) the
			 * ramdisk
			 */
#ifdef CONFIG_BLK_DEV_INITRD
			if (initrd_start) {
				if ((initrd_pstart > addr) &&
				    (initrd_pstart < (addr + size))) {
					add_memory_region(addr,
					                  initrd_pstart - addr,
					                  BOOT_MEM_RAM);
					rd_flag = 1;
				}
				if ((initrd_pend > addr) &&
				    (initrd_pend < (addr + size))) {
					add_memory_region(initrd_pend,
						(addr + size) - initrd_pend,
						 BOOT_MEM_RAM);
					rd_flag = 1;
				}
			}
#endif
			if (!rd_flag) {
				if (addr > MAX_RAM_SIZE)
					continue;
				if (addr+size > MAX_RAM_SIZE)
					size = MAX_RAM_SIZE - (addr+size) + 1;
				/*
				 * memcpy/__copy_user prefetch, which
				 * will cause a bus error for
				 * KSEG/KUSEG addrs not backed by RAM.
				 * Hence, reserve some padding for the
				 * prefetch distance.
				 */
				if (size > 512)
					size -= 512;
				add_memory_region(addr, size, BOOT_MEM_RAM);
			}
			board_mem_region_addrs[board_mem_region_count] = addr;
			board_mem_region_sizes[board_mem_region_count] = size;
			board_mem_region_count++;
			if (board_mem_region_count ==
			    SIBYTE_MAX_MEM_REGIONS) {
				/*
				 * Too many regions.  Need to configure more
				 */
				while(1);
			}
		}
	}
#ifdef CONFIG_BLK_DEV_INITRD
	if (initrd_start) {
		add_memory_region(initrd_pstart, initrd_pend - initrd_pstart,
				  BOOT_MEM_RESERVED);
	}
#endif
}

#ifdef CONFIG_BLK_DEV_INITRD
static int __init initrd_setup(char *str)
{
	char rdarg[64];
	int idx;
	char *tmp, *endptr;
	unsigned long initrd_size;

	/* Make a copy of the initrd argument so we can smash it up here */
	for (idx = 0; idx < sizeof(rdarg)-1; idx++) {
		if (!str[idx] || (str[idx] == ' ')) break;
		rdarg[idx] = str[idx];
	}

	rdarg[idx] = 0;
	str = rdarg;

	/*
	 *Initrd location comes in the form "<hex size of ramdisk in bytes>@<location in memory>"
	 *  e.g. initrd=3abfd@80010000.  This is set up by the loader.
	 */
	for (tmp = str; *tmp != '@'; tmp++) {
		if (!*tmp) {
			goto fail;
		}
	}
	*tmp = 0;
	tmp++;
	if (!*tmp) {
		goto fail;
	}
	initrd_size = simple_strtoul(str, &endptr, 16);
	if (*endptr) {
		*(tmp-1) = '@';
		goto fail;
	}
	*(tmp-1) = '@';
	initrd_start = simple_strtoul(tmp, &endptr, 16);
	if (*endptr) {
		goto fail;
	}
	initrd_end = initrd_start + initrd_size;
	printk("Found initrd of %lx@%lx\n", initrd_size, initrd_start);
	return 1;
 fail:
	printk("Bad initrd argument.  Disabling initrd\n");
	initrd_start = 0;
	initrd_end = 0;
	return 1;
}

#endif

extern struct plat_smp_ops sb_smp_ops;
extern struct plat_smp_ops bcm1480_smp_ops;

/*
 * prom_init is called just after the cpu type is determined, from setup_arch()
 */
void __init prom_init(void)
{
	uint64_t cfe_ept, cfe_handle;
	unsigned int cfe_eptseal;
	int argc = fw_arg0;
	char **envp = (char **) fw_arg2;
	int *prom_vec = (int *) fw_arg3;
#ifdef CONFIG_KGDB
	char *arg;
#endif

	_machine_restart   = cfe_linux_restart;
	_machine_halt      = cfe_linux_halt;
	pm_power_off = cfe_linux_halt;

	/*
	 * Check if a loader was used; if NOT, the 4 arguments are
	 * what CFE gives us (handle, 0, EPT and EPTSEAL)
	 */
	if (argc < 0) {
		cfe_handle = (uint64_t)(long)argc;
		cfe_ept = (long)envp;
		cfe_eptseal = (uint32_t)(unsigned long)prom_vec;
	} else {
		if ((int32_t)(long)prom_vec < 0) {
			/*
			 * Old loader; all it gives us is the handle,
			 * so use the "known" entrypoint and assume
			 * the seal.
			 */
			cfe_handle = (uint64_t)(long)prom_vec;
			cfe_ept = (uint64_t)((int32_t)0x9fc00500);
			cfe_eptseal = CFE_EPTSEAL;
		} else {
			/*
			 * Newer loaders bundle the handle/ept/eptseal
			 * Note: prom_vec is in the loader's useg
			 * which is still alive in the TLB.
			 */
			cfe_handle = (uint64_t)((int32_t *)prom_vec)[0];
			cfe_ept = (uint64_t)((int32_t *)prom_vec)[2];
			cfe_eptseal = (unsigned int)((uint32_t *)prom_vec)[3];
		}
	}
	if (cfe_eptseal != CFE_EPTSEAL) {
		/* too early for panic to do any good */
		printk("CFE's entrypoint seal doesn't match. Spinning.");
		while (1) ;
	}
	cfe_init(cfe_handle, cfe_ept);
	/*
	 * Get the handle for (at least) prom_putchar, possibly for
	 * boot console
	 */
	cfe_cons_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
	if (cfe_getenv("LINUX_CMDLINE", arcs_cmdline, CL_SIZE) < 0) {
		if (argc < 0) {
			/*
			 * It's OK for direct boot to not provide a
			 *  command line
			 */
			strcpy(arcs_cmdline, "root=/dev/ram0 ");
#ifdef CONFIG_SIBYTE_PTSWARM
			strcat(arcs_cmdline, "console=ttyS0,115200 ");
#endif
		} else {
			/* The loader should have set the command line */
			/* too early for panic to do any good */
			printk("LINUX_CMDLINE not defined in cfe.");
			while (1) ;
		}
	}

#ifdef CONFIG_KGDB
	if ((arg = strstr(arcs_cmdline, "kgdb=duart")) != NULL)
		kgdb_port = (arg[10] == '0') ? 0 : 1;
	else
		kgdb_port = 1;
#endif

#ifdef CONFIG_BLK_DEV_INITRD
	{
		char *ptr;
		/* Need to find out early whether we've got an initrd.  So scan
		   the list looking now */
		for (ptr = arcs_cmdline; *ptr; ptr++) {
			while (*ptr == ' ') {
				ptr++;
			}
			if (!strncmp(ptr, "initrd=", 7)) {
				initrd_setup(ptr+7);
				break;
			} else {
				while (*ptr && (*ptr != ' ')) {
					ptr++;
				}
			}
		}
	}
#endif /* CONFIG_BLK_DEV_INITRD */

	/* Not sure this is needed, but it's the safe way. */
	arcs_cmdline[CL_SIZE-1] = 0;

	prom_meminit();

#if defined(CONFIG_SIBYTE_BCM112X) || defined(CONFIG_SIBYTE_SB1250)
	register_smp_ops(&sb_smp_ops);
#endif
#if defined(CONFIG_SIBYTE_BCM1x55) || defined(CONFIG_SIBYTE_BCM1x80)
	register_smp_ops(&bcm1480_smp_ops);
#endif
}

void __init prom_free_prom_memory(void)
{
	/* Not sure what I'm supposed to do here.  Nothing, I think */
}

void prom_putchar(char c)
{
	int ret;

	while ((ret = cfe_write(cfe_cons_handle, &c, 1)) == 0)
		;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Copyright (C) 2000, 2001, 2002, 2003 Broadcom Corporation
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation; either version 2
	7	* of the License, or (at your option) any later version.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	17	*/
	18
1da177e4 LT	19	#include <linux/init.h>
	20	#include <linux/kernel.h>
	21	#include <linux/linkage.h>
	22	#include <linux/mm.h>
	23	#include <linux/blkdev.h>
	24	#include <linux/bootmem.h>
fcdb27ad	25	#include <linux/pm.h>
1da177e4 LT	26	#include <linux/smp.h>
	27
	28	#include <asm/bootinfo.h>
	29	#include <asm/reboot.h>
	30	#include <asm/sibyte/board.h>
87353d8a	31	#include <asm/smp-ops.h>
1da177e4	32
df78b5c8 AJ	33	#include <asm/fw/cfe/cfe_api.h>
df78b5c8 AJ	34	#include <asm/fw/cfe/cfe_error.h>
1da177e4 LT	35
1da177e4 LT	36	/* Max ram addressable in 32-bit segments */
875d43e7	37	#ifdef CONFIG_64BIT
1da177e4 LT	38	#define MAX_RAM_SIZE (~0ULL)
	39	#else
	40	#ifdef CONFIG_HIGHMEM
	41	#ifdef CONFIG_64BIT_PHYS_ADDR
	42	#define MAX_RAM_SIZE (~0ULL)
	43	#else
	44	#define MAX_RAM_SIZE (0xffffffffULL)
	45	#endif
	46	#else
	47	#define MAX_RAM_SIZE (0x1fffffffULL)
	48	#endif
	49	#endif
	50
	51	#define SIBYTE_MAX_MEM_REGIONS 8
	52	phys_t board_mem_region_addrs[SIBYTE_MAX_MEM_REGIONS];
	53	phys_t board_mem_region_sizes[SIBYTE_MAX_MEM_REGIONS];
	54	unsigned int board_mem_region_count;
	55
	56	int cfe_cons_handle;
	57
	58	#ifdef CONFIG_BLK_DEV_INITRD
	59	extern unsigned long initrd_start, initrd_end;
	60	#endif
	61
	62	#ifdef CONFIG_KGDB
	63	extern int kgdb_port;
	64	#endif
	65
b3f6df9f	66	static void __noreturn cfe_linux_exit(void *arg)
1da177e4 LT	67	{
	68	int warm = (int )arg;
	69
	70	if (smp_processor_id()) {
	71	static int reboot_smp;
	72
	73	/* Don't repeat the process from another CPU */
	74	if (!reboot_smp) {
	75	/* Get CPU 0 to do the cfe_exit */
	76	reboot_smp = 1;
	77	smp_call_function(cfe_linux_exit, arg, 1, 0);
	78	}
	79	} else {
	80	printk("Passing control back to CFE...\n");
	81	cfe_exit(warm, 0);
	82	printk("cfe_exit returned??\n");
	83	}
	84	while (1);
	85	}
	86
b3f6df9f	87	static void __noreturn cfe_linux_restart(char *command)
1da177e4 LT	88	{
	89	static const int zero;
	90
	91	cfe_linux_exit((void *)&zero);
	92	}
	93
b3f6df9f	94	static void __noreturn cfe_linux_halt(void)
1da177e4 LT	95	{
	96	static const int one = 1;
	97
	98	cfe_linux_exit((void *)&one);
	99	}
	100
	101	static __init void prom_meminit(void)
	102	{
	103	u64 addr, size, type; /* regardless of 64BIT_PHYS_ADDR */
	104	int mem_flags = 0;
	105	unsigned int idx;
	106	int rd_flag;
	107	#ifdef CONFIG_BLK_DEV_INITRD
	108	unsigned long initrd_pstart;
	109	unsigned long initrd_pend;
	110
	111	initrd_pstart = CPHYSADDR(initrd_start);
	112	initrd_pend = CPHYSADDR(initrd_end);
	113	if (initrd_start &&
	114	((initrd_pstart > MAX_RAM_SIZE)
	115	\|\| (initrd_pend > MAX_RAM_SIZE))) {
	116	panic("initrd out of addressable memory");
	117	}
	118
	119	#endif /* INITRD */
	120
	121	for (idx = 0; cfe_enummem(idx, mem_flags, &addr, &size, &type) != CFE_ERR_NOMORE;
	122	idx++) {
	123	rd_flag = 0;
	124	if (type == CFE_MI_AVAILABLE) {
	125	/*
	126	* See if this block contains (any portion of) the
	127	* ramdisk
	128	*/
	129	#ifdef CONFIG_BLK_DEV_INITRD
	130	if (initrd_start) {
	131	if ((initrd_pstart > addr) &&
	132	(initrd_pstart < (addr + size))) {
	133	add_memory_region(addr,
	134	initrd_pstart - addr,
	135	BOOT_MEM_RAM);
	136	rd_flag = 1;
	137	}
	138	if ((initrd_pend > addr) &&
	139	(initrd_pend < (addr + size))) {
	140	add_memory_region(initrd_pend,
	141	(addr + size) - initrd_pend,
	142	BOOT_MEM_RAM);
	143	rd_flag = 1;
	144	}
	145	}
	146	#endif
	147	if (!rd_flag) {
	148	if (addr > MAX_RAM_SIZE)
	149	continue;
	150	if (addr+size > MAX_RAM_SIZE)
	151	size = MAX_RAM_SIZE - (addr+size) + 1;
	152	/*
	153	* memcpy/__copy_user prefetch, which
	154	* will cause a bus error for
	155	* KSEG/KUSEG addrs not backed by RAM.
	156	* Hence, reserve some padding for the
	157	* prefetch distance.
	158	*/
159	if (size > 512)
160	size -= 512;
161	add_memory_region(addr, size, BOOT_MEM_RAM);
162	}
163	board_mem_region_addrs[board_mem_region_count] = addr;
164	board_mem_region_sizes[board_mem_region_count] = size;
165	board_mem_region_count++;
166	if (board_mem_region_count ==
167	SIBYTE_MAX_MEM_REGIONS) {
168	/*
169	* Too many regions. Need to configure more
170	*/
171	while(1);
172	}
173	}
174	}
175	#ifdef CONFIG_BLK_DEV_INITRD
176	if (initrd_start) {
177	add_memory_region(initrd_pstart, initrd_pend - initrd_pstart,
178	BOOT_MEM_RESERVED);
179	}
180	#endif
181	}
182
183	#ifdef CONFIG_BLK_DEV_INITRD
184	static int __init initrd_setup(char *str)
185	{
186	char rdarg[64];
187	int idx;
188	char tmp, endptr;
189	unsigned long initrd_size;
190
191	/* Make a copy of the initrd argument so we can smash it up here */
192	for (idx = 0; idx < sizeof(rdarg)-1; idx++) {
193	if (!str[idx] \|\| (str[idx] == ' ')) break;
194	rdarg[idx] = str[idx];
195	}
196
197	rdarg[idx] = 0;
198	str = rdarg;
199
200	/*
201	*Initrd location comes in the form "<hex size of ramdisk in bytes>@<location in memory>"
202	* e.g. initrd=3abfd@80010000. This is set up by the loader.
203	*/
204	for (tmp = str; *tmp != '@'; tmp++) {
205	if (!*tmp) {
206	goto fail;
207	}
208	}
209	*tmp = 0;
210	tmp++;
211	if (!*tmp) {
212	goto fail;
213	}
214	initrd_size = simple_strtoul(str, &endptr, 16);
215	if (*endptr) {
216	*(tmp-1) = '@';
217	goto fail;
218	}
219	*(tmp-1) = '@';
220	initrd_start = simple_strtoul(tmp, &endptr, 16);
221	if (*endptr) {
222	goto fail;
223	}
224	initrd_end = initrd_start + initrd_size;
36a88530	225	printk("Found initrd of %lx@%lx\n", initrd_size, initrd_start);
1da177e4 LT	226	return 1;
1da177e4 LT	227	fail:
36a88530	228	printk("Bad initrd argument. Disabling initrd\n");
1da177e4 LT	229	initrd_start = 0;
	230	initrd_end = 0;
	231	return 1;
	232	}
	233
	234	#endif
	235
87353d8a RB	236	extern struct plat_smp_ops sb_smp_ops;
	237	extern struct plat_smp_ops bcm1480_smp_ops;
	238
1da177e4 LT	239	/*
	240	* prom_init is called just after the cpu type is determined, from setup_arch()
	241	*/
	242	void __init prom_init(void)
	243	{
	244	uint64_t cfe_ept, cfe_handle;
	245	unsigned int cfe_eptseal;
	246	int argc = fw_arg0;
	247	char envp = (char ) fw_arg2;
	248	int prom_vec = (int ) fw_arg3;
	249	#ifdef CONFIG_KGDB
	250	char *arg;
	251	#endif
	252
	253	_machine_restart = cfe_linux_restart;
	254	_machine_halt = cfe_linux_halt;
fcdb27ad	255	pm_power_off = cfe_linux_halt;
1da177e4 LT	256
	257	/*
	258	* Check if a loader was used; if NOT, the 4 arguments are
	259	* what CFE gives us (handle, 0, EPT and EPTSEAL)
	260	*/
	261	if (argc < 0) {
	262	cfe_handle = (uint64_t)(long)argc;
	263	cfe_ept = (long)envp;
	264	cfe_eptseal = (uint32_t)(unsigned long)prom_vec;
	265	} else {
	266	if ((int32_t)(long)prom_vec < 0) {
	267	/*
	268	* Old loader; all it gives us is the handle,
	269	* so use the "known" entrypoint and assume
	270	* the seal.
	271	*/
	272	cfe_handle = (uint64_t)(long)prom_vec;
	273	cfe_ept = (uint64_t)((int32_t)0x9fc00500);
	274	cfe_eptseal = CFE_EPTSEAL;
	275	} else {
	276	/*
	277	* Newer loaders bundle the handle/ept/eptseal
	278	* Note: prom_vec is in the loader's useg
	279	* which is still alive in the TLB.
	280	*/
	281	cfe_handle = (uint64_t)((int32_t *)prom_vec)[0];
	282	cfe_ept = (uint64_t)((int32_t *)prom_vec)[2];
	283	cfe_eptseal = (unsigned int)((uint32_t *)prom_vec)[3];
	284	}
	285	}
	286	if (cfe_eptseal != CFE_EPTSEAL) {
	287	/* too early for panic to do any good */
36a88530	288	printk("CFE's entrypoint seal doesn't match. Spinning.");
1da177e4 LT	289	while (1) ;
	290	}
	291	cfe_init(cfe_handle, cfe_ept);
42a3b4f2	292	/*
1da177e4 LT	293	* Get the handle for (at least) prom_putchar, possibly for
	294	* boot console
	295	*/
	296	cfe_cons_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
	297	if (cfe_getenv("LINUX_CMDLINE", arcs_cmdline, CL_SIZE) < 0) {
	298	if (argc < 0) {
	299	/*
	300	* It's OK for direct boot to not provide a
	301	* command line
	302	*/
	303	strcpy(arcs_cmdline, "root=/dev/ram0 ");
	304	#ifdef CONFIG_SIBYTE_PTSWARM
	305	strcat(arcs_cmdline, "console=ttyS0,115200 ");
	306	#endif
	307	} else {
	308	/* The loader should have set the command line */
	309	/* too early for panic to do any good */
36a88530	310	printk("LINUX_CMDLINE not defined in cfe.");
1da177e4 LT	311	while (1) ;
	312	}
	313	}
	314
	315	#ifdef CONFIG_KGDB
21a151d8	316	if ((arg = strstr(arcs_cmdline, "kgdb=duart")) != NULL)
1da177e4 LT	317	kgdb_port = (arg[10] == '0') ? 0 : 1;
	318	else
	319	kgdb_port = 1;
	320	#endif
	321
	322	#ifdef CONFIG_BLK_DEV_INITRD
	323	{
	324	char *ptr;
	325	/* Need to find out early whether we've got an initrd. So scan
	326	the list looking now */
	327	for (ptr = arcs_cmdline; *ptr; ptr++) {
	328	while (*ptr == ' ') {
	329	ptr++;
	330	}
	331	if (!strncmp(ptr, "initrd=", 7)) {
	332	initrd_setup(ptr+7);
	333	break;
	334	} else {
	335	while (ptr && (ptr != ' ')) {
	336	ptr++;
	337	}
	338	}
	339	}
	340	}
	341	#endif /* CONFIG_BLK_DEV_INITRD */
	342
	343	/* Not sure this is needed, but it's the safe way. */
	344	arcs_cmdline[CL_SIZE-1] = 0;
	345
1da177e4	346	prom_meminit();
87353d8a RB	347
	348	#if defined(CONFIG_SIBYTE_BCM112X) \|\| defined(CONFIG_SIBYTE_SB1250)
	349	register_smp_ops(&sb_smp_ops);
	350	#endif
	351	#if defined(CONFIG_SIBYTE_BCM1x55) \|\| defined(CONFIG_SIBYTE_BCM1x80)
	352	register_smp_ops(&bcm1480_smp_ops);
	353	#endif
1da177e4 LT	354	}
1da177e4 LT	355
c44e8d5e	356	void __init prom_free_prom_memory(void)
1da177e4 LT	357	{
1da177e4 LT	358	/* Not sure what I'm supposed to do here. Nothing, I think */
1da177e4 LT	359	}
	360
	361	void prom_putchar(char c)
	362	{
	363	int ret;
	364
	365	while ((ret = cfe_write(cfe_cons_handle, &c, 1)) == 0)
	366	;
	367	}