[J-u-boot.git] / lib_ppc / bootm.c

/*
 * (C) Copyright 2008 Semihalf
 *
 * (C) Copyright 2000-2006
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * 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
 */

#define DEBUG

#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <image.h>
#include <malloc.h>
#include <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>

static void fdt_error (const char *msg);
#endif

#ifdef CFG_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[]);
static ulong get_sp (void);

#if defined(CONFIG_CMD_BDI)
extern int do_bdinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#endif

void  __attribute__((noinline))
do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
		int	argc, char *argv[],
		image_header_t *hdr,
		int	verify)
{
	ulong	initrd_start, initrd_end;
	ulong	rd_data_start, rd_data_end, rd_len;

	ulong	cmd_start, cmd_end;
	char    *cmdline;

	ulong	sp_limit;
	char	*s;
	bd_t	*kbd;
	void	(*kernel)(bd_t *, ulong, ulong, ulong, ulong);

#if defined(CONFIG_OF_LIBFDT)
	image_header_t *fdt_hdr;
	char	*of_flat_tree = NULL;
	ulong	of_data = 0;
#endif

	/*
	 * 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 CFG_BOOTMAPSZ settings), but in unused
	 * memory, which means far enough below the current stack
	 * pointer.
	 */

	sp_limit = get_sp();
	debug ("## Current stack ends at 0x%08lX ", sp_limit);

	sp_limit -= 2048;		/* just to be sure */
	if (sp_limit > CFG_BOOTMAPSZ)
		sp_limit = CFG_BOOTMAPSZ;
	sp_limit &= ~0xF;

	debug ("=> set upper limit to 0x%08lX\n", sp_limit);

	cmdline = (char *)((sp_limit - CFG_BARGSIZE) & ~0xF);
	kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF);

	if ((s = getenv("bootargs")) == NULL)
		s = "";

	strcpy (cmdline, s);

	cmd_start    = (ulong)&cmdline[0];
	cmd_end      = cmd_start + strlen(cmdline);

	*kbd = *(gd->bd);

#ifdef	DEBUG
	printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);

#if defined(CONFIG_CMD_BDI)
	do_bdinfo (NULL, 0, 0, NULL);
#endif
#endif

	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 */
	}

	/* find kernel */
	kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr);

	/* find ramdisk */
	get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
			IH_ARCH_PPC, &rd_data_start, &rd_data_end);

	rd_len = rd_data_end - rd_data_start;

	ramdisk_high (rd_data_start, rd_len, kbd, sp_limit, get_sp (),
			&initrd_start, &initrd_end);

#if defined(CONFIG_OF_LIBFDT)
	/* find flattened device tree */
	if(argc > 3) {
		of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
		fdt_hdr = (image_header_t *)of_flat_tree;

		if (fdt_check_header (of_flat_tree) == 0) {
#ifndef CFG_NO_FLASH
			if (addr2info((ulong)of_flat_tree) != NULL)
				of_data = (ulong)of_flat_tree;
#endif
		} else if (image_check_magic (fdt_hdr)) {
			ulong image_start, image_end;
			ulong load_start, load_end;

			printf ("## Flat Device Tree at %08lX\n", fdt_hdr);
			print_image_hdr (fdt_hdr);

			image_start = (ulong)fdt_hdr;
			image_end = image_get_image_end (fdt_hdr);

			load_start = image_get_load (fdt_hdr);
			load_end = load_start + image_get_data_size (fdt_hdr);

			if ((load_start < image_end) && (load_end > image_start)) {
				fdt_error ("fdt overwritten");
				do_reset (cmdtp, flag, argc, argv);
			}

			puts ("   Verifying Checksum ... ");
			if (!image_check_hcrc (fdt_hdr)) {
				fdt_error ("fdt header checksum invalid");
				do_reset (cmdtp, flag, argc, argv);
			}

			if (!image_check_dcrc (fdt_hdr)) {
				fdt_error ("fdt checksum invalid");
				do_reset (cmdtp, flag, argc, argv);
			}
			puts ("OK\n");

			if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
				fdt_error ("uImage is not a fdt");
				do_reset (cmdtp, flag, argc, argv);
			}
			if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
				fdt_error ("uImage is compressed");
				do_reset (cmdtp, flag, argc, argv);
			}
			if (fdt_check_header (of_flat_tree + image_get_header_size ()) != 0) {
				fdt_error ("uImage data is not a fdt");
				do_reset (cmdtp, flag, argc, argv);
			}

			memmove ((void *)image_get_load (fdt_hdr),
				(void *)(of_flat_tree + image_get_header_size ()),
				image_get_data_size (fdt_hdr));

			of_flat_tree = (char *)image_get_load (fdt_hdr);
		} else {
			fdt_error ("Did not find a Flattened Device Tree");
			do_reset (cmdtp, flag, argc, argv);
		}
		printf ("   Booting using the fdt at 0x%x\n",
				of_flat_tree);
	} else if (image_check_type (hdr, IH_TYPE_MULTI)) {
		ulong fdt_data, fdt_len;

		image_multi_getimg (hdr, 2, &fdt_data, &fdt_len);
		if (fdt_len) {

			of_flat_tree = (char *)fdt_data;

#ifndef CFG_NO_FLASH
			/* move the blob if it is in flash (set of_data to !null) */
			if (addr2info ((ulong)of_flat_tree) != NULL)
				of_data = (ulong)of_flat_tree;
#endif

			if (fdt_check_header (of_flat_tree) != 0) {
				fdt_error ("image is not a fdt");
				do_reset (cmdtp, flag, argc, argv);
			}

			if (be32_to_cpu (fdt_totalsize (of_flat_tree)) != fdt_len) {
				fdt_error ("fdt size != image size");
				do_reset (cmdtp, flag, argc, argv);
			}
		}
	}
#endif


#if defined(CONFIG_OF_LIBFDT)

#ifdef CFG_BOOTMAPSZ
	/*
	 * The blob must be within CFG_BOOTMAPSZ,
	 * so we flag it to be copied if it is not.
	 */
	if (of_flat_tree >= (char *)CFG_BOOTMAPSZ)
		of_data = (ulong)of_flat_tree;
#endif

	/* move of_flat_tree if needed */
	if (of_data) {
		int err;
		ulong of_start, of_len;

		of_len = be32_to_cpu(fdt_totalsize(of_data));

		/* position on a 4K boundary before the kbd */
		of_start  = (ulong)kbd - of_len;
		of_start &= ~(4096 - 1);	/* align on page */
		debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
			of_data, of_data + of_len - 1, of_len, of_len);

		of_flat_tree = (char *)of_start;
		printf ("   Loading Device Tree to %08lx, end %08lx ... ",
			of_start, of_start + of_len - 1);
		err = fdt_open_into((void *)of_data, (void *)of_start, of_len);
		if (err != 0) {
			fdt_error ("fdt move failed");
			do_reset (cmdtp, flag, argc, argv);
		}
		puts ("OK\n");
	}
	/*
	 * 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_flat_tree) {
		if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
			fdt_error ("/chosen node create failed");
			do_reset (cmdtp, flag, argc, argv);
		}
#ifdef CONFIG_OF_HAS_UBOOT_ENV
		if (fdt_env(of_flat_tree) < 0) {
			fdt_error ("/u-boot-env node create failed");
			do_reset (cmdtp, flag, argc, argv);
		}
#endif
#ifdef CONFIG_OF_HAS_BD_T
		if (fdt_bd_t(of_flat_tree) < 0) {
			fdt_error ("/bd_t node create failed");
			do_reset (cmdtp, flag, argc, argv);
		}
#endif
#ifdef CONFIG_OF_BOARD_SETUP
		/* Call the board-specific fixup routine */
		ft_board_setup(of_flat_tree, gd->bd);
#endif
	}
#endif	/* CONFIG_OF_LIBFDT */

	debug ("## Transferring control to Linux (at address %08lx) ...\n",
		(ulong)kernel);

	show_boot_progress (15);

#if defined(CFG_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, followed by the board info data
		 *   r4: physical pointer to the kernel itself
		 *   r5: NULL
		 *   r6: NULL
		 *   r7: NULL
		 */
		(*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
		/* does not return */
	}
#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
	 */
	(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
	/* does not return */
}

static ulong get_sp (void)
{
	ulong sp;

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

#if defined(CONFIG_OF_LIBFDT)
static void fdt_error (const char *msg)
{
	puts ("ERROR: ");
	puts (msg);
	puts (" - must RESET the board to recover.\n");
}
#endif
Commit	Line	Data
5d3cc55e MB	1	/*
	2	* (C) Copyright 2008 Semihalf
	3	*
	4	* (C) Copyright 2000-2006
	5	* Wolfgang Denk, DENX Software Engineering, [email protected].
	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 MB	26	#define DEBUG
7582438c MB	27
5d3cc55e MB	28	#include <common.h>
	29	#include <watchdog.h>
	30	#include <command.h>
	31	#include <image.h>
	32	#include <malloc.h>
	33	#include <zlib.h>
	34	#include <bzlib.h>
	35	#include <environment.h>
	36	#include <asm/byteorder.h>
	37
	38	#if defined(CONFIG_OF_LIBFDT)
	39	#include <fdt.h>
	40	#include <libfdt.h>
	41	#include <fdt_support.h>
d3c5eb6d MB	42
d3c5eb6d MB	43	static void fdt_error (const char *msg);
5d3cc55e MB	44	#endif
5d3cc55e MB	45
5d3cc55e MB	46	#ifdef CFG_INIT_RAM_LOCK
	47	#include <asm/cache.h>
	48	#endif
	49
5d3cc55e	50	DECLARE_GLOBAL_DATA_PTR;
5d3cc55e	51
5d3cc55e	52	extern int do_reset (cmd_tbl_t cmdtp, int flag, int argc, char argv[]);
ceaed2b1	53	static ulong get_sp (void);
5d3cc55e MB	54
5d3cc55e MB	55	#if defined(CONFIG_CMD_BDI)
ceaed2b1	56	extern int do_bdinfo (cmd_tbl_t cmdtp, int flag, int argc, char argv[]);
5d3cc55e MB	57	#endif
	58
	59	void __attribute__((noinline))
f13e7b2e	60	do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
5d3cc55e	61	int argc, char *argv[],
f13e7b2e	62	image_header_t *hdr,
5d3cc55e MB	63	int verify)
5d3cc55e MB	64	{
f13e7b2e	65	ulong initrd_start, initrd_end;
5ad03eb3	66	ulong rd_data_start, rd_data_end, rd_len;
f13e7b2e MB	67
f13e7b2e MB	68	ulong cmd_start, cmd_end;
5d3cc55e	69	char *cmdline;
f13e7b2e	70
ceaed2b1	71	ulong sp_limit;
5d3cc55e MB	72	char *s;
	73	bd_t *kbd;
	74	void (kernel)(bd_t , ulong, ulong, ulong, ulong);
f13e7b2e	75
4a2ad5ff	76	#if defined(CONFIG_OF_LIBFDT)
f13e7b2e	77	image_header_t *fdt_hdr;
5d3cc55e MB	78	char *of_flat_tree = NULL;
	79	ulong of_data = 0;
	80	#endif
	81
5d3cc55e MB	82	/*
	83	* Booting a (Linux) kernel image
	84	*
	85	* Allocate space for command line and board info - the
	86	* address should be as high as possible within the reach of
	87	* the kernel (see CFG_BOOTMAPSZ settings), but in unused
	88	* memory, which means far enough below the current stack
	89	* pointer.
	90	*/
	91
ceaed2b1 MB	92	sp_limit = get_sp();
ceaed2b1 MB	93	debug ("## Current stack ends at 0x%08lX ", sp_limit);
5d3cc55e	94
ceaed2b1 MB	95	sp_limit -= 2048; /* just to be sure */
	96	if (sp_limit > CFG_BOOTMAPSZ)
	97	sp_limit = CFG_BOOTMAPSZ;
	98	sp_limit &= ~0xF;
5d3cc55e	99
ceaed2b1	100	debug ("=> set upper limit to 0x%08lX\n", sp_limit);
5d3cc55e	101
ceaed2b1	102	cmdline = (char *)((sp_limit - CFG_BARGSIZE) & ~0xF);
5d3cc55e MB	103	kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF);
	104
	105	if ((s = getenv("bootargs")) == NULL)
	106	s = "";
	107
	108	strcpy (cmdline, s);
	109
	110	cmd_start = (ulong)&cmdline[0];
	111	cmd_end = cmd_start + strlen(cmdline);
	112
	113	kbd = (gd->bd);
	114
	115	#ifdef DEBUG
	116	printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);
	117
	118	#if defined(CONFIG_CMD_BDI)
	119	do_bdinfo (NULL, 0, 0, NULL);
	120	#endif
	121	#endif
	122
	123	if ((s = getenv ("clocks_in_mhz")) != NULL) {
	124	/* convert all clock information to MHz */
	125	kbd->bi_intfreq /= 1000000L;
	126	kbd->bi_busfreq /= 1000000L;
	127	#if defined(CONFIG_MPC8220)
	128	kbd->bi_inpfreq /= 1000000L;
	129	kbd->bi_pcifreq /= 1000000L;
	130	kbd->bi_pevfreq /= 1000000L;
	131	kbd->bi_flbfreq /= 1000000L;
	132	kbd->bi_vcofreq /= 1000000L;
	133	#endif
	134	#if defined(CONFIG_CPM2)
	135	kbd->bi_cpmfreq /= 1000000L;
	136	kbd->bi_brgfreq /= 1000000L;
	137	kbd->bi_sccfreq /= 1000000L;
	138	kbd->bi_vco /= 1000000L;
	139	#endif
	140	#if defined(CONFIG_MPC5xxx)
	141	kbd->bi_ipbfreq /= 1000000L;
	142	kbd->bi_pcifreq /= 1000000L;
	143	#endif /* CONFIG_MPC5xxx */
	144	}
	145
ceaed2b1	146	/* find kernel */
5d3cc55e MB	147	kernel = (void ()(bd_t , ulong, ulong, ulong, ulong))image_get_ep (hdr);
5d3cc55e MB	148
ceaed2b1	149	/* find ramdisk */
5ad03eb3 MB	150	get_ramdisk (cmdtp, flag, argc, argv, hdr, verify,
5ad03eb3 MB	151	IH_ARCH_PPC, &rd_data_start, &rd_data_end);
ceaed2b1	152
5ad03eb3	153	rd_len = rd_data_end - rd_data_start;
5d3cc55e	154
ceaed2b1 MB	155	ramdisk_high (rd_data_start, rd_len, kbd, sp_limit, get_sp (),
	156	&initrd_start, &initrd_end);
	157
4a2ad5ff	158	#if defined(CONFIG_OF_LIBFDT)
ceaed2b1	159	/* find flattened device tree */
5d3cc55e MB	160	if(argc > 3) {
5d3cc55e MB	161	of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16);
f13e7b2e	162	fdt_hdr = (image_header_t *)of_flat_tree;
4a2ad5ff	163
958fc48a	164	if (fdt_check_header (of_flat_tree) == 0) {
5d3cc55e MB	165	#ifndef CFG_NO_FLASH
	166	if (addr2info((ulong)of_flat_tree) != NULL)
	167	of_data = (ulong)of_flat_tree;
	168	#endif
f13e7b2e	169	} else if (image_check_magic (fdt_hdr)) {
7582438c MB	170	ulong image_start, image_end;
	171	ulong load_start, load_end;
	172
f13e7b2e MB	173	printf ("## Flat Device Tree at %08lX\n", fdt_hdr);
f13e7b2e MB	174	print_image_hdr (fdt_hdr);
5d3cc55e	175
7582438c MB	176	image_start = (ulong)fdt_hdr;
	177	image_end = image_get_image_end (fdt_hdr);
	178
	179	load_start = image_get_load (fdt_hdr);
	180	load_end = load_start + image_get_data_size (fdt_hdr);
	181
	182	if ((load_start < image_end) && (load_end > image_start)) {
d3c5eb6d	183	fdt_error ("fdt overwritten");
5d3cc55e MB	184	do_reset (cmdtp, flag, argc, argv);
	185	}
	186
	187	puts (" Verifying Checksum ... ");
f13e7b2e	188	if (!image_check_hcrc (fdt_hdr)) {
d3c5eb6d	189	fdt_error ("fdt header checksum invalid");
5d3cc55e MB	190	do_reset (cmdtp, flag, argc, argv);
	191	}
	192
f13e7b2e	193	if (!image_check_dcrc (fdt_hdr)) {
d3c5eb6d	194	fdt_error ("fdt checksum invalid");
5d3cc55e MB	195	do_reset (cmdtp, flag, argc, argv);
	196	}
	197	puts ("OK\n");
	198
f13e7b2e	199	if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
d3c5eb6d	200	fdt_error ("uImage is not a fdt");
5d3cc55e MB	201	do_reset (cmdtp, flag, argc, argv);
5d3cc55e MB	202	}
f13e7b2e	203	if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
d3c5eb6d	204	fdt_error ("uImage is compressed");
5d3cc55e MB	205	do_reset (cmdtp, flag, argc, argv);
5d3cc55e MB	206	}
5d3cc55e	207	if (fdt_check_header (of_flat_tree + image_get_header_size ()) != 0) {
d3c5eb6d	208	fdt_error ("uImage data is not a fdt");
5d3cc55e MB	209	do_reset (cmdtp, flag, argc, argv);
	210	}
	211
f13e7b2e	212	memmove ((void *)image_get_load (fdt_hdr),
5d3cc55e	213	(void *)(of_flat_tree + image_get_header_size ()),
f13e7b2e	214	image_get_data_size (fdt_hdr));
5d3cc55e	215
f13e7b2e	216	of_flat_tree = (char *)image_get_load (fdt_hdr);
5d3cc55e	217	} else {
d3c5eb6d	218	fdt_error ("Did not find a Flattened Device Tree");
5d3cc55e MB	219	do_reset (cmdtp, flag, argc, argv);
	220	}
	221	printf (" Booting using the fdt at 0x%x\n",
	222	of_flat_tree);
f13e7b2e MB	223	} else if (image_check_type (hdr, IH_TYPE_MULTI)) {
f13e7b2e MB	224	ulong fdt_data, fdt_len;
5d3cc55e	225
f13e7b2e MB	226	image_multi_getimg (hdr, 2, &fdt_data, &fdt_len);
	227	if (fdt_len) {
	228
	229	of_flat_tree = (char *)fdt_data;
5d3cc55e MB	230
5d3cc55e MB	231	#ifndef CFG_NO_FLASH
f13e7b2e MB	232	/* move the blob if it is in flash (set of_data to !null) */
	233	if (addr2info ((ulong)of_flat_tree) != NULL)
	234	of_data = (ulong)of_flat_tree;
5d3cc55e MB	235	#endif
5d3cc55e MB	236
f13e7b2e	237	if (fdt_check_header (of_flat_tree) != 0) {
d3c5eb6d	238	fdt_error ("image is not a fdt");
f13e7b2e MB	239	do_reset (cmdtp, flag, argc, argv);
f13e7b2e MB	240	}
5d3cc55e	241
f13e7b2e	242	if (be32_to_cpu (fdt_totalsize (of_flat_tree)) != fdt_len) {
d3c5eb6d	243	fdt_error ("fdt size != image size");
f13e7b2e MB	244	do_reset (cmdtp, flag, argc, argv);
f13e7b2e MB	245	}
5d3cc55e MB	246	}
	247	}
	248	#endif
5d3cc55e	249
5d3cc55e MB	250
	251	#if defined(CONFIG_OF_LIBFDT)
	252
	253	#ifdef CFG_BOOTMAPSZ
	254	/*
	255	* The blob must be within CFG_BOOTMAPSZ,
	256	* so we flag it to be copied if it is not.
	257	*/
	258	if (of_flat_tree >= (char *)CFG_BOOTMAPSZ)
	259	of_data = (ulong)of_flat_tree;
	260	#endif
	261
	262	/* move of_flat_tree if needed */
	263	if (of_data) {
	264	int err;
	265	ulong of_start, of_len;
	266
	267	of_len = be32_to_cpu(fdt_totalsize(of_data));
	268
	269	/* position on a 4K boundary before the kbd */
	270	of_start = (ulong)kbd - of_len;
	271	of_start &= ~(4096 - 1); /* align on page */
	272	debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
	273	of_data, of_data + of_len - 1, of_len, of_len);
	274
	275	of_flat_tree = (char *)of_start;
	276	printf (" Loading Device Tree to %08lx, end %08lx ... ",
	277	of_start, of_start + of_len - 1);
	278	err = fdt_open_into((void )of_data, (void )of_start, of_len);
	279	if (err != 0) {
d3c5eb6d	280	fdt_error ("fdt move failed");
5d3cc55e MB	281	do_reset (cmdtp, flag, argc, argv);
	282	}
	283	puts ("OK\n");
	284	}
	285	/*
	286	* Add the chosen node if it doesn't exist, add the env and bd_t
	287	* if the user wants it (the logic is in the subroutines).
	288	*/
	289	if (of_flat_tree) {
	290	if (fdt_chosen(of_flat_tree, initrd_start, initrd_end, 0) < 0) {
d3c5eb6d	291	fdt_error ("/chosen node create failed");
5d3cc55e MB	292	do_reset (cmdtp, flag, argc, argv);
	293	}
	294	#ifdef CONFIG_OF_HAS_UBOOT_ENV
	295	if (fdt_env(of_flat_tree) < 0) {
d3c5eb6d	296	fdt_error ("/u-boot-env node create failed");
5d3cc55e MB	297	do_reset (cmdtp, flag, argc, argv);
	298	}
	299	#endif
	300	#ifdef CONFIG_OF_HAS_BD_T
	301	if (fdt_bd_t(of_flat_tree) < 0) {
d3c5eb6d	302	fdt_error ("/bd_t node create failed");
5d3cc55e MB	303	do_reset (cmdtp, flag, argc, argv);
	304	}
	305	#endif
	306	#ifdef CONFIG_OF_BOARD_SETUP
	307	/* Call the board-specific fixup routine */
	308	ft_board_setup(of_flat_tree, gd->bd);
	309	#endif
	310	}
4a2ad5ff	311	#endif /* CONFIG_OF_LIBFDT */
d45d5a18	312
5d3cc55e MB	313	debug ("## Transferring control to Linux (at address %08lx) ...\n",
	314	(ulong)kernel);
	315
	316	show_boot_progress (15);
	317
	318	#if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
	319	unlock_ram_in_cache();
	320	#endif
	321
4a2ad5ff	322	#if defined(CONFIG_OF_LIBFDT)
5d3cc55e MB	323	if (of_flat_tree) { /* device tree; boot new style */
	324	/*
	325	* Linux Kernel Parameters (passing device tree):
	326	* r3: pointer to the fdt, followed by the board info data
	327	* r4: physical pointer to the kernel itself
	328	* r5: NULL
	329	* r6: NULL
	330	* r7: NULL
	331	*/
	332	(kernel) ((bd_t )of_flat_tree, (ulong)kernel, 0, 0, 0);
	333	/* does not return */
	334	}
	335	#endif
	336	/*
	337	* Linux Kernel Parameters (passing board info data):
	338	* r3: ptr to board info data
	339	* r4: initrd_start or 0 if no initrd
	340	* r5: initrd_end - unused if r4 is 0
	341	* r6: Start of command line string
	342	* r7: End of command line string
	343	*/
	344	(*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
	345	/* does not return */
	346	}
d3c5eb6d	347
ceaed2b1 MB	348	static ulong get_sp (void)
	349	{
	350	ulong sp;
	351
	352	asm( "mr %0,1": "=r"(sp) : );
	353	return sp;
	354	}
	355
d3c5eb6d MB	356	#if defined(CONFIG_OF_LIBFDT)
	357	static void fdt_error (const char *msg)
	358	{
	359	puts ("ERROR: ");
	360	puts (msg);
	361	puts (" - must RESET the board to recover.\n");
	362	}
	363	#endif