2 * (C) Copyright 2008 Semihalf
4 * (C) Copyright 2000-2006
5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * See file CREDITS for list of people who contributed to this
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.
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.
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,
34 #include <environment.h>
35 #include <asm/byteorder.h>
37 #if defined(CONFIG_OF_LIBFDT)
40 #include <fdt_support.h>
42 static void fdt_error (const char *msg);
43 static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
44 bootm_headers_t *images, char **of_flat_tree, ulong *of_size);
45 static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
46 cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
47 char **of_flat_tree, ulong *of_size);
50 #ifdef CFG_INIT_RAM_LOCK
51 #include <asm/cache.h>
55 #define CFG_FDT_PAD 0x3000
58 DECLARE_GLOBAL_DATA_PTR;
60 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
61 extern ulong get_effective_memsize(void);
62 static ulong get_sp (void);
63 static void set_clocks_in_mhz (bd_t *kbd);
65 #ifndef CFG_LINUX_LOWMEM_MAX_SIZE
66 #define CFG_LINUX_LOWMEM_MAX_SIZE (768*1024*1024)
69 void __attribute__((noinline))
70 do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
71 bootm_headers_t *images)
75 ulong initrd_start, initrd_end;
76 ulong rd_data_start, rd_data_end, rd_len;
78 phys_size_t bootm_size;
80 ulong cmd_start, cmd_end, bootmap_base;
82 void (*kernel)(bd_t *, ulong r4, ulong r5, ulong r6,
83 ulong r7, ulong r8, ulong r9);
86 struct lmb *lmb = images->lmb;
88 #if defined(CONFIG_OF_LIBFDT)
89 char *of_flat_tree = NULL;
92 kernel = (void (*)(bd_t *, ulong, ulong, ulong,
93 ulong, ulong, ulong))images->ep;
95 bootmap_base = getenv_bootm_low();
96 bootm_size = getenv_bootm_size();
99 if (((u64)bootmap_base + bootm_size) >
100 (CFG_SDRAM_BASE + (u64)gd->ram_size))
101 puts("WARNING: bootm_low + bootm_size exceed total memory\n");
102 if ((bootmap_base + bootm_size) > get_effective_memsize())
103 puts("WARNING: bootm_low + bootm_size exceed eff. memory\n");
106 size = min(bootm_size, get_effective_memsize());
107 size = min(size, CFG_LINUX_LOWMEM_MAX_SIZE);
109 if (size < bootm_size) {
110 ulong base = bootmap_base + size;
111 printf("WARNING: adjusting available memory to %lx\n", size);
112 lmb_reserve(lmb, base, bootm_size - size);
116 * Booting a (Linux) kernel image
118 * Allocate space for command line and board info - the
119 * address should be as high as possible within the reach of
120 * the kernel (see CFG_BOOTMAPSZ settings), but in unused
121 * memory, which means far enough below the current stack
125 debug ("## Current stack ends at 0x%08lx\n", sp);
127 /* adjust sp by 1K to be safe */
129 lmb_reserve(lmb, sp, (CFG_SDRAM_BASE + get_effective_memsize() - sp));
131 #if defined(CONFIG_OF_LIBFDT)
132 /* find flattened device tree */
133 ret = boot_get_fdt (cmdtp, flag, argc, argv, images, &of_flat_tree, &of_size);
140 /* allocate space and init command line */
141 ret = boot_get_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);
143 puts("ERROR with allocation of cmdline\n");
147 /* allocate space for kernel copy of board info */
148 ret = boot_get_kbd (lmb, &kbd, bootmap_base);
150 puts("ERROR with allocation of kernel bd\n");
153 set_clocks_in_mhz(kbd);
157 ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_PPC,
158 &rd_data_start, &rd_data_end);
162 rd_len = rd_data_end - rd_data_start;
164 #if defined(CONFIG_OF_LIBFDT)
165 ret = boot_relocate_fdt (lmb, bootmap_base,
166 cmdtp, flag, argc, argv, &of_flat_tree, &of_size);
169 * Add the chosen node if it doesn't exist, add the env and bd_t
170 * if the user wants it (the logic is in the subroutines).
173 /* pass in dummy initrd info, we'll fix up later */
174 if (fdt_chosen(of_flat_tree, rd_data_start, rd_data_end, 0) < 0) {
175 fdt_error ("/chosen node create failed");
178 #ifdef CONFIG_OF_BOARD_SETUP
179 /* Call the board-specific fixup routine */
180 ft_board_setup(of_flat_tree, gd->bd);
184 /* Fixup the fdt memreserve now that we know how big it is */
188 int total = fdt_num_mem_rsv(of_flat_tree);
191 for (j = 0; j < total; j++) {
192 fdt_get_mem_rsv(of_flat_tree, j, &addr, &size);
193 if (addr == (uint64_t)(u32)of_flat_tree) {
194 fdt_del_mem_rsv(of_flat_tree, j);
199 /* Delete the old LMB reservation */
200 lmb_free(lmb, (phys_addr_t)(u32)of_flat_tree,
201 (phys_size_t)fdt_totalsize(of_flat_tree));
203 /* Calculate the actual size of the fdt */
204 actualsize = fdt_off_dt_strings(of_flat_tree) +
205 fdt_size_dt_strings(of_flat_tree);
207 /* Make it so the fdt ends on a page boundary */
208 actualsize = ALIGN(actualsize, 0x1000);
209 actualsize = actualsize - ((uint)of_flat_tree & 0xfff);
211 /* Change the fdt header to reflect the correct size */
212 fdt_set_totalsize(of_flat_tree, actualsize);
213 of_size = actualsize;
215 /* Add the new reservation */
216 ret = fdt_add_mem_rsv(of_flat_tree, (uint)of_flat_tree,
219 /* Create a new LMB reservation */
220 lmb_reserve(lmb, (ulong)of_flat_tree, of_size);
222 #endif /* CONFIG_OF_LIBFDT */
224 ret = boot_ramdisk_high (lmb, rd_data_start, rd_len, &initrd_start, &initrd_end);
228 #if defined(CONFIG_OF_LIBFDT)
229 /* fixup the initrd now that we know where it should be */
230 if ((of_flat_tree) && (initrd_start && initrd_end)) {
232 int total = fdt_num_mem_rsv(of_flat_tree);
235 /* Look for the dummy entry and delete it */
236 for (j = 0; j < total; j++) {
237 fdt_get_mem_rsv(of_flat_tree, j, &addr, &size);
238 if (addr == rd_data_start) {
239 fdt_del_mem_rsv(of_flat_tree, j);
244 ret = fdt_add_mem_rsv(of_flat_tree, initrd_start,
245 initrd_end - initrd_start + 1);
247 printf("fdt_chosen: %s\n", fdt_strerror(ret));
251 do_fixup_by_path_u32(of_flat_tree, "/chosen",
252 "linux,initrd-start", initrd_start, 0);
253 do_fixup_by_path_u32(of_flat_tree, "/chosen",
254 "linux,initrd-end", initrd_end, 0);
257 debug ("## Transferring control to Linux (at address %08lx) ...\n",
260 show_boot_progress (15);
262 #if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
263 unlock_ram_in_cache();
266 #if defined(CONFIG_OF_LIBFDT)
267 if (of_flat_tree) { /* device tree; boot new style */
269 * Linux Kernel Parameters (passing device tree):
270 * r3: pointer to the fdt
274 * r7: size of IMA in bytes
278 #if defined(CONFIG_85xx) || defined(CONFIG_440)
279 #define EPAPR_MAGIC (0x45504150)
281 #define EPAPR_MAGIC (0x65504150)
284 debug (" Booting using OF flat tree...\n");
285 (*kernel) ((bd_t *)of_flat_tree, 0, 0, EPAPR_MAGIC,
286 CFG_BOOTMAPSZ, 0, 0);
287 /* does not return */
292 * Linux Kernel Parameters (passing board info data):
293 * r3: ptr to board info data
294 * r4: initrd_start or 0 if no initrd
295 * r5: initrd_end - unused if r4 is 0
296 * r6: Start of command line string
297 * r7: End of command line string
301 debug (" Booting using board info...\n");
302 (*kernel) (kbd, initrd_start, initrd_end,
303 cmd_start, cmd_end, 0, 0);
304 /* does not return */
309 do_reset (cmdtp, flag, argc, argv);
313 static ulong get_sp (void)
317 asm( "mr %0,1": "=r"(sp) : );
321 static void set_clocks_in_mhz (bd_t *kbd)
325 if ((s = getenv ("clocks_in_mhz")) != NULL) {
326 /* convert all clock information to MHz */
327 kbd->bi_intfreq /= 1000000L;
328 kbd->bi_busfreq /= 1000000L;
329 #if defined(CONFIG_MPC8220)
330 kbd->bi_inpfreq /= 1000000L;
331 kbd->bi_pcifreq /= 1000000L;
332 kbd->bi_pevfreq /= 1000000L;
333 kbd->bi_flbfreq /= 1000000L;
334 kbd->bi_vcofreq /= 1000000L;
336 #if defined(CONFIG_CPM2)
337 kbd->bi_cpmfreq /= 1000000L;
338 kbd->bi_brgfreq /= 1000000L;
339 kbd->bi_sccfreq /= 1000000L;
340 kbd->bi_vco /= 1000000L;
342 #if defined(CONFIG_MPC5xxx)
343 kbd->bi_ipbfreq /= 1000000L;
344 kbd->bi_pcifreq /= 1000000L;
345 #endif /* CONFIG_MPC5xxx */
349 #if defined(CONFIG_OF_LIBFDT)
350 static void fdt_error (const char *msg)
354 puts (" - must RESET the board to recover.\n");
357 static image_header_t *image_get_fdt (ulong fdt_addr)
359 image_header_t *fdt_hdr = (image_header_t *)fdt_addr;
361 image_print_contents (fdt_hdr);
363 puts (" Verifying Checksum ... ");
364 if (!image_check_hcrc (fdt_hdr)) {
365 fdt_error ("fdt header checksum invalid");
369 if (!image_check_dcrc (fdt_hdr)) {
370 fdt_error ("fdt checksum invalid");
375 if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
376 fdt_error ("uImage is not a fdt");
379 if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
380 fdt_error ("uImage is compressed");
383 if (fdt_check_header ((char *)image_get_data (fdt_hdr)) != 0) {
384 fdt_error ("uImage data is not a fdt");
391 * fit_check_fdt - verify FIT format FDT subimage
392 * @fit_hdr: pointer to the FIT header
393 * fdt_noffset: FDT subimage node offset within FIT image
394 * @verify: data CRC verification flag
396 * fit_check_fdt() verifies integrity of the FDT subimage and from
397 * specified FIT image.
403 #if defined(CONFIG_FIT)
404 static int fit_check_fdt (const void *fit, int fdt_noffset, int verify)
406 fit_image_print (fit, fdt_noffset, " ");
409 puts (" Verifying Hash Integrity ... ");
410 if (!fit_image_check_hashes (fit, fdt_noffset)) {
411 fdt_error ("Bad Data Hash");
417 if (!fit_image_check_type (fit, fdt_noffset, IH_TYPE_FLATDT)) {
418 fdt_error ("Not a FDT image");
422 if (!fit_image_check_comp (fit, fdt_noffset, IH_COMP_NONE)) {
423 fdt_error ("FDT image is compressed");
429 #endif /* CONFIG_FIT */
431 static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
432 bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
435 image_header_t *fdt_hdr;
436 char *fdt_blob = NULL;
437 ulong image_start, image_end;
438 ulong load_start, load_end;
439 #if defined(CONFIG_FIT)
441 const char *fit_uname_config = NULL;
442 const char *fit_uname_fdt = NULL;
450 *of_flat_tree = NULL;
453 if (argc > 3 || genimg_has_config (images)) {
454 #if defined(CONFIG_FIT)
457 * If the FDT blob comes from the FIT image and the
458 * FIT image address is omitted in the command line
459 * argument, try to use ramdisk or os FIT image
460 * address or default load address.
462 if (images->fit_uname_rd)
463 default_addr = (ulong)images->fit_hdr_rd;
464 else if (images->fit_uname_os)
465 default_addr = (ulong)images->fit_hdr_os;
467 default_addr = load_addr;
469 if (fit_parse_conf (argv[3], default_addr,
470 &fdt_addr, &fit_uname_config)) {
471 debug ("* fdt: config '%s' from image at 0x%08lx\n",
472 fit_uname_config, fdt_addr);
473 } else if (fit_parse_subimage (argv[3], default_addr,
474 &fdt_addr, &fit_uname_fdt)) {
475 debug ("* fdt: subimage '%s' from image at 0x%08lx\n",
476 fit_uname_fdt, fdt_addr);
480 fdt_addr = simple_strtoul(argv[3], NULL, 16);
481 debug ("* fdt: cmdline image address = 0x%08lx\n",
484 #if defined(CONFIG_FIT)
486 /* use FIT configuration provided in first bootm
489 fdt_addr = (ulong)images->fit_hdr_os;
490 fit_uname_config = images->fit_uname_cfg;
491 debug ("* fdt: using config '%s' from image at 0x%08lx\n",
492 fit_uname_config, fdt_addr);
495 * Check whether configuration has FDT blob defined,
496 * if not quit silently.
498 fit_hdr = (void *)fdt_addr;
499 cfg_noffset = fit_conf_get_node (fit_hdr,
501 if (cfg_noffset < 0) {
502 debug ("* fdt: no such config\n");
506 fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
508 if (fdt_noffset < 0) {
509 debug ("* fdt: no fdt in config\n");
515 debug ("## Checking for 'FDT'/'FDT Image' at %08lx\n",
518 /* copy from dataflash if needed */
519 fdt_addr = genimg_get_image (fdt_addr);
522 * Check if there is an FDT image at the
523 * address provided in the second bootm argument
524 * check image type, for FIT images get a FIT node.
526 switch (genimg_get_format ((void *)fdt_addr)) {
527 case IMAGE_FORMAT_LEGACY:
528 /* verify fdt_addr points to a valid image header */
529 printf ("## Flattened Device Tree from Legacy Image at %08lx\n",
531 fdt_hdr = image_get_fdt (fdt_addr);
536 * move image data to the load address,
537 * make sure we don't overwrite initial image
539 image_start = (ulong)fdt_hdr;
540 image_end = image_get_image_end (fdt_hdr);
542 load_start = image_get_load (fdt_hdr);
543 load_end = load_start + image_get_data_size (fdt_hdr);
545 if ((load_start < image_end) && (load_end > image_start)) {
546 fdt_error ("fdt overwritten");
550 debug (" Loading FDT from 0x%08lx to 0x%08lx\n",
551 image_get_data (fdt_hdr), load_start);
553 memmove ((void *)load_start,
554 (void *)image_get_data (fdt_hdr),
555 image_get_data_size (fdt_hdr));
557 fdt_blob = (char *)load_start;
559 case IMAGE_FORMAT_FIT:
561 * This case will catch both: new uImage format
562 * (libfdt based) and raw FDT blob (also libfdt
565 #if defined(CONFIG_FIT)
566 /* check FDT blob vs FIT blob */
567 if (fit_check_format ((const void *)fdt_addr)) {
571 fit_hdr = (void *)fdt_addr;
572 printf ("## Flattened Device Tree from FIT Image at %08lx\n",
575 if (!fit_uname_fdt) {
577 * no FDT blob image node unit name,
578 * try to get config node first. If
579 * config unit node name is NULL
580 * fit_conf_get_node() will try to
581 * find default config node
583 cfg_noffset = fit_conf_get_node (fit_hdr,
586 if (cfg_noffset < 0) {
587 fdt_error ("Could not find configuration node\n");
591 fit_uname_config = fdt_get_name (fit_hdr,
593 printf (" Using '%s' configuration\n",
596 fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
598 fit_uname_fdt = fit_get_name (fit_hdr,
601 /* get FDT component image node offset */
602 fdt_noffset = fit_image_get_node (fit_hdr,
605 if (fdt_noffset < 0) {
606 fdt_error ("Could not find subimage node\n");
610 printf (" Trying '%s' FDT blob subimage\n",
613 if (!fit_check_fdt (fit_hdr, fdt_noffset,
617 /* get ramdisk image data address and length */
618 if (fit_image_get_data (fit_hdr, fdt_noffset,
620 fdt_error ("Could not find FDT subimage data");
624 /* verift that image data is a proper FDT blob */
625 if (fdt_check_header ((char *)data) != 0) {
626 fdt_error ("Subimage data is not a FTD");
631 * move image data to the load address,
632 * make sure we don't overwrite initial image
634 image_start = (ulong)fit_hdr;
635 image_end = fit_get_end (fit_hdr);
637 if (fit_image_get_load (fit_hdr, fdt_noffset,
639 load_end = load_start + size;
641 if ((load_start < image_end) &&
642 (load_end > image_start)) {
643 fdt_error ("FDT overwritten");
647 printf (" Loading FDT from 0x%08lx to 0x%08lx\n",
648 (ulong)data, load_start);
650 memmove ((void *)load_start,
653 fdt_blob = (char *)load_start;
655 fdt_blob = (char *)data;
658 images->fit_hdr_fdt = fit_hdr;
659 images->fit_uname_fdt = fit_uname_fdt;
660 images->fit_noffset_fdt = fdt_noffset;
668 fdt_blob = (char *)fdt_addr;
669 debug ("* fdt: raw FDT blob\n");
670 printf ("## Flattened Device Tree blob at %08lx\n", (long)fdt_blob);
674 fdt_error ("Did not find a cmdline Flattened Device Tree");
678 printf (" Booting using the fdt blob at 0x%x\n", (int)fdt_blob);
680 } else if (images->legacy_hdr_valid &&
681 image_check_type (&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
683 ulong fdt_data, fdt_len;
686 * Now check if we have a legacy multi-component image,
687 * get second entry data start address and len.
689 printf ("## Flattened Device Tree from multi "
690 "component Image at %08lX\n",
691 (ulong)images->legacy_hdr_os);
693 image_multi_getimg (images->legacy_hdr_os, 2, &fdt_data, &fdt_len);
696 fdt_blob = (char *)fdt_data;
697 printf (" Booting using the fdt at 0x%x\n", (int)fdt_blob);
699 if (fdt_check_header (fdt_blob) != 0) {
700 fdt_error ("image is not a fdt");
704 if (be32_to_cpu (fdt_totalsize (fdt_blob)) != fdt_len) {
705 fdt_error ("fdt size != image size");
709 debug ("## No Flattened Device Tree\n");
713 debug ("## No Flattened Device Tree\n");
717 *of_flat_tree = fdt_blob;
718 *of_size = be32_to_cpu (fdt_totalsize (fdt_blob));
719 debug (" of_flat_tree at 0x%08lx size 0x%08lx\n",
720 *of_flat_tree, *of_size);
725 do_reset (cmdtp, flag, argc, argv);
729 static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
730 cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
731 char **of_flat_tree, ulong *of_size)
733 char *fdt_blob = *of_flat_tree;
741 if (fdt_check_header (fdt_blob) != 0) {
742 fdt_error ("image is not a fdt");
747 /* move the blob if it is in flash (set relocate) */
748 if (addr2info ((ulong)fdt_blob) != NULL)
753 * The blob needs to be inside the boot mapping.
755 if (fdt_blob < (char *)bootmap_base)
758 if ((fdt_blob + *of_size + CFG_FDT_PAD) >=
759 ((char *)CFG_BOOTMAPSZ + bootmap_base))
762 /* move flattend device tree if needed */
767 /* position on a 4K boundary before the alloc_current */
768 /* Pad the FDT by a specified amount */
769 of_len = *of_size + CFG_FDT_PAD;
770 of_start = (unsigned long)lmb_alloc_base(lmb, of_len, 0x1000,
771 (CFG_BOOTMAPSZ + bootmap_base));
774 puts("device tree - allocation error\n");
778 debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
779 (ulong)fdt_blob, (ulong)fdt_blob + *of_size - 1,
782 printf (" Loading Device Tree to %08lx, end %08lx ... ",
783 of_start, of_start + of_len - 1);
785 err = fdt_open_into (fdt_blob, (void *)of_start, of_len);
787 fdt_error ("fdt move failed");
792 *of_flat_tree = (char *)of_start;
795 *of_flat_tree = fdt_blob;
796 of_len = (CFG_BOOTMAPSZ + bootmap_base) - (ulong)fdt_blob;
797 lmb_reserve(lmb, (ulong)fdt_blob, of_len);
798 fdt_set_totalsize(*of_flat_tree, of_len);