[people/ms/u-boot.git] / arch / powerpc / lib / bootm.c

/*
 * (C) Copyright 2008 Semihalf
 *
 * (C) Copyright 2000-2006
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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 <common.h>
#include <watchdog.h>
#include <command.h>
#include <image.h>
#include <malloc.h>
#include <u-boot/zlib.h>
#include <bzlib.h>
#include <environment.h>
#include <asm/byteorder.h>

#if defined(CONFIG_OF_LIBFDT)
#include <fdt.h>
#include <libfdt.h>
#include <fdt_support.h>

#endif

#ifdef CONFIG_SYS_INIT_RAM_LOCK
#include <asm/cache.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
extern ulong get_effective_memsize(void);
static ulong get_sp (void);
static void set_clocks_in_mhz (bd_t *kbd);

#ifndef CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE
#define CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE	(768*1024*1024)
#endif

static void boot_jump_linux(bootm_headers_t *images)
{
	void	(*kernel)(bd_t *, ulong r4, ulong r5, ulong r6,
			  ulong r7, ulong r8, ulong r9);
#ifdef CONFIG_OF_LIBFDT
	char *of_flat_tree = images->ft_addr;
#endif

	kernel = (void (*)(bd_t *, ulong, ulong, ulong,
			   ulong, ulong, ulong))images->ep;
	debug ("## Transferring control to Linux (at address %08lx) ...\n",
		(ulong)kernel);

	show_boot_progress (15);

#if defined(CONFIG_SYS_INIT_RAM_LOCK) && !defined(CONFIG_E500)
	unlock_ram_in_cache();
#endif

#if defined(CONFIG_OF_LIBFDT)
	if (of_flat_tree) {	/* device tree; boot new style */
		/*
		 * Linux Kernel Parameters (passing device tree):
		 *   r3: pointer to the fdt
		 *   r4: 0
		 *   r5: 0
		 *   r6: epapr magic
		 *   r7: size of IMA in bytes
		 *   r8: 0
		 *   r9: 0
		 */
#if defined(CONFIG_85xx) || defined(CONFIG_440)
 #define EPAPR_MAGIC	(0x45504150)
#else
 #define EPAPR_MAGIC	(0x65504150)
#endif

		debug ("   Booting using OF flat tree...\n");
		WATCHDOG_RESET ();
		(*kernel) ((bd_t *)of_flat_tree, 0, 0, EPAPR_MAGIC,
			   CONFIG_SYS_BOOTMAPSZ, 0, 0);
		/* does not return */
	} else
#endif
	{
		/*
		 * Linux Kernel Parameters (passing board info data):
		 *   r3: ptr to board info data
		 *   r4: initrd_start or 0 if no initrd
		 *   r5: initrd_end - unused if r4 is 0
		 *   r6: Start of command line string
		 *   r7: End   of command line string
		 *   r8: 0
		 *   r9: 0
		 */
		ulong cmd_start = images->cmdline_start;
		ulong cmd_end = images->cmdline_end;
		ulong initrd_start = images->initrd_start;
		ulong initrd_end = images->initrd_end;
		bd_t *kbd = images->kbd;

		debug ("   Booting using board info...\n");
		WATCHDOG_RESET ();
		(*kernel) (kbd, initrd_start, initrd_end,
			   cmd_start, cmd_end, 0, 0);
		/* does not return */
	}
	return ;
}

void arch_lmb_reserve(struct lmb *lmb)
{
	phys_size_t bootm_size;
	ulong size, sp, bootmap_base;

	bootmap_base = getenv_bootm_low();
	bootm_size = getenv_bootm_size();

#ifdef DEBUG
	if (((u64)bootmap_base + bootm_size) >
	    (CONFIG_SYS_SDRAM_BASE + (u64)gd->ram_size))
		puts("WARNING: bootm_low + bootm_size exceed total memory\n");
	if ((bootmap_base + bootm_size) > get_effective_memsize())
		puts("WARNING: bootm_low + bootm_size exceed eff. memory\n");
#endif

	size = min(bootm_size, get_effective_memsize());
	size = min(size, CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE);

	if (size < bootm_size) {
		ulong base = bootmap_base + size;
		printf("WARNING: adjusting available memory to %lx\n", size);
		lmb_reserve(lmb, base, bootm_size - size);
	}

	/*
	 * Booting a (Linux) kernel image
	 *
	 * Allocate space for command line and board info - the
	 * address should be as high as possible within the reach of
	 * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
	 * memory, which means far enough below the current stack
	 * pointer.
	 */
	sp = get_sp();
	debug ("## Current stack ends at 0x%08lx\n", sp);

	/* adjust sp by 1K to be safe */
	sp -= 1024;
	lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + get_effective_memsize() - sp));

	return ;
}

static void boot_prep_linux(void)
{
#ifdef CONFIG_MP
	/* if we are MP make sure to flush the dcache() to any changes are made
	 * visibile to all other cores */
	flush_dcache();
#endif
	return ;
}

static int boot_cmdline_linux(bootm_headers_t *images)
{
	ulong bootmap_base = getenv_bootm_low();
	ulong of_size = images->ft_len;
	struct lmb *lmb = &images->lmb;
	ulong *cmd_start = &images->cmdline_start;
	ulong *cmd_end = &images->cmdline_end;

	int ret = 0;

	if (!of_size) {
		/* allocate space and init command line */
		ret = boot_get_cmdline (lmb, cmd_start, cmd_end, bootmap_base);
		if (ret) {
			puts("ERROR with allocation of cmdline\n");
			return ret;
		}
	}

	return ret;
}

static int boot_bd_t_linux(bootm_headers_t *images)
{
	ulong bootmap_base = getenv_bootm_low();
	ulong of_size = images->ft_len;
	struct lmb *lmb = &images->lmb;
	bd_t **kbd = &images->kbd;

	int ret = 0;

	if (!of_size) {
		/* allocate space for kernel copy of board info */
		ret = boot_get_kbd (lmb, kbd, bootmap_base);
		if (ret) {
			puts("ERROR with allocation of kernel bd\n");
			return ret;
		}
		set_clocks_in_mhz(*kbd);
	}

	return ret;
}

static int boot_body_linux(bootm_headers_t *images)
{
	ulong rd_len;
	struct lmb *lmb = &images->lmb;
	ulong *initrd_start = &images->initrd_start;
	ulong *initrd_end = &images->initrd_end;
#if defined(CONFIG_OF_LIBFDT)
	ulong bootmap_base = getenv_bootm_low();
	ulong of_size = images->ft_len;
	char **of_flat_tree = &images->ft_addr;
#endif

	int ret;

	/* allocate space and init command line */
	ret = boot_cmdline_linux(images);
	if (ret)
		return ret;

	/* allocate space for kernel copy of board info */
	ret = boot_bd_t_linux(images);
	if (ret)
		return ret;

	rd_len = images->rd_end - images->rd_start;
	ret = boot_ramdisk_high (lmb, images->rd_start, rd_len, initrd_start, initrd_end);
	if (ret)
		return ret;

#if defined(CONFIG_OF_LIBFDT)
	ret = boot_relocate_fdt(lmb, bootmap_base, of_flat_tree, &of_size);
	if (ret)
		return ret;

	/*
	 * Add the chosen node if it doesn't exist, add the env and bd_t
	 * if the user wants it (the logic is in the subroutines).
	 */
	if (of_size) {
		if (fdt_chosen(*of_flat_tree, 1) < 0) {
			puts ("ERROR: ");
			puts ("/chosen node create failed");
			puts (" - must RESET the board to recover.\n");
			return -1;
		}
#ifdef CONFIG_OF_BOARD_SETUP
		/* Call the board-specific fixup routine */
		ft_board_setup(*of_flat_tree, gd->bd);
#endif

		/* Delete the old LMB reservation */
		lmb_free(lmb, (phys_addr_t)(u32)*of_flat_tree,
				(phys_size_t)fdt_totalsize(*of_flat_tree));

		ret = fdt_resize(*of_flat_tree);
		if (ret < 0)
			return ret;
		of_size = ret;

		if (*initrd_start && *initrd_end)
			of_size += FDT_RAMDISK_OVERHEAD;
		/* Create a new LMB reservation */
		lmb_reserve(lmb, (ulong)*of_flat_tree, of_size);

		/* fixup the initrd now that we know where it should be */
		if (*initrd_start && *initrd_end)
			fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1);
	}
#endif	/* CONFIG_OF_LIBFDT */
	return 0;
}

__attribute__((noinline))
int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
{
	int	ret;

	if (flag & BOOTM_STATE_OS_CMDLINE) {
		boot_cmdline_linux(images);
		return 0;
	}

	if (flag & BOOTM_STATE_OS_BD_T) {
		boot_bd_t_linux(images);
		return 0;
	}

	if (flag & BOOTM_STATE_OS_PREP) {
		boot_prep_linux();
		return 0;
	}

	if (flag & BOOTM_STATE_OS_GO) {
		boot_jump_linux(images);
		return 0;
	}

	boot_prep_linux();
	ret = boot_body_linux(images);
	if (ret)
		return ret;
	boot_jump_linux(images);

	return 0;
}

static ulong get_sp (void)
{
	ulong sp;

	asm( "mr %0,1": "=r"(sp) : );
	return sp;
}

static void set_clocks_in_mhz (bd_t *kbd)
{
	char	*s;

	if ((s = getenv ("clocks_in_mhz")) != NULL) {
		/* convert all clock information to MHz */
		kbd->bi_intfreq /= 1000000L;
		kbd->bi_busfreq /= 1000000L;
#if defined(CONFIG_MPC8220)
		kbd->bi_inpfreq /= 1000000L;
		kbd->bi_pcifreq /= 1000000L;
		kbd->bi_pevfreq /= 1000000L;
		kbd->bi_flbfreq /= 1000000L;
		kbd->bi_vcofreq /= 1000000L;
#endif
#if defined(CONFIG_CPM2)
		kbd->bi_cpmfreq /= 1000000L;
		kbd->bi_brgfreq /= 1000000L;
		kbd->bi_sccfreq /= 1000000L;
		kbd->bi_vco	/= 1000000L;
#endif
#if defined(CONFIG_MPC5xxx)
		kbd->bi_ipbfreq /= 1000000L;
		kbd->bi_pcifreq /= 1000000L;
#endif /* CONFIG_MPC5xxx */
	}
}
Commit	Line	Data
5d3cc55e MB	1	/*
	2	* (C) Copyright 2008 Semihalf
	3	*
	4	* (C) Copyright 2000-2006
	5	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	6	*
	7	* See file CREDITS for list of people who contributed to this
	8	* project.
	9	*
	10	* This program is free software; you can redistribute it and/or
	11	* modify it under the terms of the GNU General Public License as
	12	* published by the Free Software Foundation; either version 2 of
	13	* the License, or (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	23	* MA 02111-1307 USA
	24	*/
	25
7582438c	26
5d3cc55e MB	27	#include <common.h>
	28	#include <watchdog.h>
	29	#include <command.h>
	30	#include <image.h>
	31	#include <malloc.h>
a31e091a	32	#include <u-boot/zlib.h>
5d3cc55e MB	33	#include <bzlib.h>
	34	#include <environment.h>
	35	#include <asm/byteorder.h>
	36
	37	#if defined(CONFIG_OF_LIBFDT)
	38	#include <fdt.h>
	39	#include <libfdt.h>
	40	#include <fdt_support.h>
9c67352f WD	41
	42	#endif
	43
	44	#ifdef CONFIG_SYS_INIT_RAM_LOCK
	45	#include <asm/cache.h>
5d3cc55e MB	46	#endif
5d3cc55e MB	47
5d3cc55e	48	DECLARE_GLOBAL_DATA_PTR;
5d3cc55e	49
5a98127d	50	extern int do_reset (cmd_tbl_t cmdtp, int flag, int argc, char argv[]);
e822d7fc	51	extern ulong get_effective_memsize(void);
ceaed2b1	52	static ulong get_sp (void);
b6b0fe64	53	static void set_clocks_in_mhz (bd_t *kbd);
5d3cc55e	54
6d0f6bcf JCPV	55	#ifndef CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE
6d0f6bcf JCPV	56	#define CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE (76810241024)
d3f2fa0d KG	57	#endif
d3f2fa0d KG	58
5a98127d KG	59	static void boot_jump_linux(bootm_headers_t *images)
	60	{
	61	void (kernel)(bd_t , ulong r4, ulong r5, ulong r6,
	62	ulong r7, ulong r8, ulong r9);
	63	#ifdef CONFIG_OF_LIBFDT
	64	char *of_flat_tree = images->ft_addr;
	65	#endif
	66
	67	kernel = (void ()(bd_t , ulong, ulong, ulong,
	68	ulong, ulong, ulong))images->ep;
	69	debug ("## Transferring control to Linux (at address %08lx) ...\n",
	70	(ulong)kernel);
	71
	72	show_boot_progress (15);
	73
9c67352f WD	74	#if defined(CONFIG_SYS_INIT_RAM_LOCK) && !defined(CONFIG_E500)
	75	unlock_ram_in_cache();
	76	#endif
	77
5a98127d KG	78	#if defined(CONFIG_OF_LIBFDT)
	79	if (of_flat_tree) { /* device tree; boot new style */
	80	/*
	81	* Linux Kernel Parameters (passing device tree):
	82	* r3: pointer to the fdt
	83	* r4: 0
	84	* r5: 0
	85	* r6: epapr magic
	86	* r7: size of IMA in bytes
	87	* r8: 0
	88	* r9: 0
	89	*/
	90	#if defined(CONFIG_85xx) \|\| defined(CONFIG_440)
	91	#define EPAPR_MAGIC (0x45504150)
	92	#else
	93	#define EPAPR_MAGIC (0x65504150)
	94	#endif
	95
	96	debug (" Booting using OF flat tree...\n");
7ff66bb0	97	WATCHDOG_RESET ();
5a98127d KG	98	(kernel) ((bd_t )of_flat_tree, 0, 0, EPAPR_MAGIC,
	99	CONFIG_SYS_BOOTMAPSZ, 0, 0);
	100	/* does not return */
	101	} else
	102	#endif
	103	{
	104	/*
	105	* Linux Kernel Parameters (passing board info data):
	106	* r3: ptr to board info data
	107	* r4: initrd_start or 0 if no initrd
	108	* r5: initrd_end - unused if r4 is 0
	109	* r6: Start of command line string
	110	* r7: End of command line string
	111	* r8: 0
	112	* r9: 0
	113	*/
	114	ulong cmd_start = images->cmdline_start;
	115	ulong cmd_end = images->cmdline_end;
	116	ulong initrd_start = images->initrd_start;
	117	ulong initrd_end = images->initrd_end;
	118	bd_t *kbd = images->kbd;
	119
	120	debug (" Booting using board info...\n");
7ff66bb0	121	WATCHDOG_RESET ();
5a98127d KG	122	(*kernel) (kbd, initrd_start, initrd_end,
	123	cmd_start, cmd_end, 0, 0);
	124	/* does not return */
	125	}
	126	return ;
	127	}
	128
76da19df	129	void arch_lmb_reserve(struct lmb *lmb)
5d3cc55e	130	{
391fd93a	131	phys_size_t bootm_size;
76da19df	132	ulong size, sp, bootmap_base;
c160a954	133
d3f2fa0d	134	bootmap_base = getenv_bootm_low();
391fd93a	135	bootm_size = getenv_bootm_size();
d3f2fa0d KG	136
d3f2fa0d KG	137	#ifdef DEBUG
391fd93a	138	if (((u64)bootmap_base + bootm_size) >
6d0f6bcf	139	(CONFIG_SYS_SDRAM_BASE + (u64)gd->ram_size))
d3f2fa0d	140	puts("WARNING: bootm_low + bootm_size exceed total memory\n");
391fd93a	141	if ((bootmap_base + bootm_size) > get_effective_memsize())
d3f2fa0d KG	142	puts("WARNING: bootm_low + bootm_size exceed eff. memory\n");
	143	#endif
	144
391fd93a	145	size = min(bootm_size, get_effective_memsize());
6d0f6bcf	146	size = min(size, CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE);
d3f2fa0d	147
391fd93a	148	if (size < bootm_size) {
d3f2fa0d	149	ulong base = bootmap_base + size;
dc4b0b38	150	printf("WARNING: adjusting available memory to %lx\n", size);
391fd93a	151	lmb_reserve(lmb, base, bootm_size - size);
d3f2fa0d	152	}
e822d7fc	153
5d3cc55e MB	154	/*
	155	* Booting a (Linux) kernel image
	156	*
	157	* Allocate space for command line and board info - the
	158	* address should be as high as possible within the reach of
6d0f6bcf	159	* the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
5d3cc55e MB	160	* memory, which means far enough below the current stack
	161	* pointer.
	162	*/
b6b0fe64	163	sp = get_sp();
d3f2fa0d	164	debug ("## Current stack ends at 0x%08lx\n", sp);
5d3cc55e	165
e822d7fc KG	166	/* adjust sp by 1K to be safe */
e822d7fc KG	167	sp -= 1024;
6d0f6bcf	168	lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + get_effective_memsize() - sp));
5d3cc55e	169
76da19df KG	170	return ;
	171	}
	172
5a98127d	173	static void boot_prep_linux(void)
76da19df	174	{
0e870980	175	#ifdef CONFIG_MP
5a98127d KG	176	/* if we are MP make sure to flush the dcache() to any changes are made
5a98127d KG	177	* visibile to all other cores */
3cbd8231	178	flush_dcache();
76da19df	179	#endif
5a98127d KG	180	return ;
5a98127d KG	181	}
76da19df	182
5a98127d KG	183	static int boot_cmdline_linux(bootm_headers_t *images)
	184	{
	185	ulong bootmap_base = getenv_bootm_low();
	186	ulong of_size = images->ft_len;
	187	struct lmb *lmb = &images->lmb;
	188	ulong *cmd_start = &images->cmdline_start;
	189	ulong *cmd_end = &images->cmdline_end;
76da19df	190
5a98127d	191	int ret = 0;
76da19df	192
27953493 KG	193	if (!of_size) {
27953493 KG	194	/* allocate space and init command line */
5a98127d	195	ret = boot_get_cmdline (lmb, cmd_start, cmd_end, bootmap_base);
e822d7fc KG	196	if (ret) {
e822d7fc KG	197	puts("ERROR with allocation of cmdline\n");
5a98127d	198	return ret;
e822d7fc	199	}
5a98127d KG	200	}
	201
	202	return ret;
	203	}
	204
	205	static int boot_bd_t_linux(bootm_headers_t *images)
	206	{
	207	ulong bootmap_base = getenv_bootm_low();
	208	ulong of_size = images->ft_len;
	209	struct lmb *lmb = &images->lmb;
	210	bd_t **kbd = &images->kbd;
	211
	212	int ret = 0;
27953493	213
5a98127d	214	if (!of_size) {
27953493	215	/* allocate space for kernel copy of board info */
5a98127d	216	ret = boot_get_kbd (lmb, kbd, bootmap_base);
e822d7fc KG	217	if (ret) {
e822d7fc KG	218	puts("ERROR with allocation of kernel bd\n");
5a98127d	219	return ret;
e822d7fc	220	}
5a98127d	221	set_clocks_in_mhz(*kbd);
27953493	222	}
5d3cc55e	223
5a98127d KG	224	return ret;
	225	}
	226
	227	static int boot_body_linux(bootm_headers_t *images)
	228	{
08293230	229	ulong rd_len;
5a98127d KG	230	struct lmb *lmb = &images->lmb;
	231	ulong *initrd_start = &images->initrd_start;
	232	ulong *initrd_end = &images->initrd_end;
	233	#if defined(CONFIG_OF_LIBFDT)
08293230 PT	234	ulong bootmap_base = getenv_bootm_low();
08293230 PT	235	ulong of_size = images->ft_len;
5a98127d KG	236	char **of_flat_tree = &images->ft_addr;
	237	#endif
	238
	239	int ret;
	240
	241	/* allocate space and init command line */
	242	ret = boot_cmdline_linux(images);
	243	if (ret)
	244	return ret;
	245
	246	/* allocate space for kernel copy of board info */
	247	ret = boot_bd_t_linux(images);
	248	if (ret)
	249	return ret;
	250
c4f9419c	251	rd_len = images->rd_end - images->rd_start;
5a98127d KG	252	ret = boot_ramdisk_high (lmb, images->rd_start, rd_len, initrd_start, initrd_end);
	253	if (ret)
	254	return ret;
5d3cc55e	255
4a2ad5ff	256	#if defined(CONFIG_OF_LIBFDT)
5a98127d	257	ret = boot_relocate_fdt(lmb, bootmap_base, of_flat_tree, &of_size);
06a09918	258	if (ret)
5a98127d	259	return ret;
5d3cc55e	260
5d3cc55e MB	261	/*
	262	* Add the chosen node if it doesn't exist, add the env and bd_t
	263	* if the user wants it (the logic is in the subroutines).
	264	*/
d2ced9eb	265	if (of_size) {
5a98127d	266	if (fdt_chosen(*of_flat_tree, 1) < 0) {
06a09918 KG	267	puts ("ERROR: ");
	268	puts ("/chosen node create failed");
	269	puts (" - must RESET the board to recover.\n");
5a98127d	270	return -1;
5d3cc55e	271	}
5d3cc55e MB	272	#ifdef CONFIG_OF_BOARD_SETUP
5d3cc55e MB	273	/* Call the board-specific fixup routine */
5a98127d	274	ft_board_setup(*of_flat_tree, gd->bd);
5d3cc55e	275	#endif
41c5eaa7	276
41c5eaa7	277	/* Delete the old LMB reservation */
5a98127d KG	278	lmb_free(lmb, (phys_addr_t)(u32)*of_flat_tree,
5a98127d KG	279	(phys_size_t)fdt_totalsize(*of_flat_tree));
41c5eaa7	280
5a98127d	281	ret = fdt_resize(*of_flat_tree);
3082d234	282	if (ret < 0)
5a98127d	283	return ret;
3082d234	284	of_size = ret;
41c5eaa7	285
5a98127d	286	if (initrd_start && initrd_end)
56844a22	287	of_size += FDT_RAMDISK_OVERHEAD;
41c5eaa7	288	/* Create a new LMB reservation */
5a98127d KG	289	lmb_reserve(lmb, (ulong)*of_flat_tree, of_size);
	290
	291	/* fixup the initrd now that we know where it should be */
	292	if (initrd_start && initrd_end)
	293	fdt_initrd(of_flat_tree, initrd_start, *initrd_end, 1);
41c5eaa7	294	}
4a2ad5ff	295	#endif /* CONFIG_OF_LIBFDT */
5a98127d KG	296	return 0;
5a98127d KG	297	}
d45d5a18	298
5a98127d KG	299	__attribute__((noinline))
	300	int do_bootm_linux(int flag, int argc, char argv[], bootm_headers_t images)
	301	{
	302	int ret;
5d3cc55e	303
5a98127d KG	304	if (flag & BOOTM_STATE_OS_CMDLINE) {
	305	boot_cmdline_linux(images);
	306	return 0;
	307	}
5d3cc55e	308
5a98127d KG	309	if (flag & BOOTM_STATE_OS_BD_T) {
	310	boot_bd_t_linux(images);
	311	return 0;
	312	}
5d3cc55e	313
5a98127d KG	314	if (flag & BOOTM_STATE_OS_PREP) {
	315	boot_prep_linux();
	316	return 0;
	317	}
a15b0710	318
5a98127d KG	319	if (flag & BOOTM_STATE_OS_GO) {
	320	boot_jump_linux(images);
	321	return 0;
bc8ed486	322	}
274cea2b	323
5a98127d KG	324	boot_prep_linux();
	325	ret = boot_body_linux(images);
	326	if (ret)
	327	return ret;
	328	boot_jump_linux(images);
	329
	330	return 0;
5d3cc55e	331	}
d3c5eb6d	332
ceaed2b1 MB	333	static ulong get_sp (void)
	334	{
	335	ulong sp;
	336
	337	asm( "mr %0,1": "=r"(sp) : );
	338	return sp;
	339	}
	340
b6b0fe64 MB	341	static void set_clocks_in_mhz (bd_t *kbd)
	342	{
	343	char *s;
	344
	345	if ((s = getenv ("clocks_in_mhz")) != NULL) {
	346	/* convert all clock information to MHz */
	347	kbd->bi_intfreq /= 1000000L;
	348	kbd->bi_busfreq /= 1000000L;
	349	#if defined(CONFIG_MPC8220)
	350	kbd->bi_inpfreq /= 1000000L;
	351	kbd->bi_pcifreq /= 1000000L;
	352	kbd->bi_pevfreq /= 1000000L;
	353	kbd->bi_flbfreq /= 1000000L;
	354	kbd->bi_vcofreq /= 1000000L;
	355	#endif
	356	#if defined(CONFIG_CPM2)
	357	kbd->bi_cpmfreq /= 1000000L;
	358	kbd->bi_brgfreq /= 1000000L;
	359	kbd->bi_sccfreq /= 1000000L;
438a4c11	360	kbd->bi_vco /= 1000000L;
b6b0fe64 MB	361	#endif
	362	#if defined(CONFIG_MPC5xxx)
	363	kbd->bi_ipbfreq /= 1000000L;
	364	kbd->bi_pcifreq /= 1000000L;
	365	#endif /* CONFIG_MPC5xxx */
	366	}
	367	}