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>
54 DECLARE_GLOBAL_DATA_PTR;
56 extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
57 extern ulong get_effective_memsize(void);
58 static ulong get_sp (void);
59 static void set_clocks_in_mhz (bd_t *kbd);
61 #ifndef CFG_LINUX_LOWMEM_MAX_SIZE
62 #define CFG_LINUX_LOWMEM_MAX_SIZE (768*1024*1024)
65 void __attribute__((noinline))
66 do_bootm_linux(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
67 bootm_headers_t *images)
71 ulong initrd_start, initrd_end;
72 ulong rd_data_start, rd_data_end, rd_len;
75 ulong cmd_start, cmd_end, bootmap_base;
78 void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
81 struct lmb *lmb = images->lmb;
83 #if defined(CONFIG_OF_LIBFDT)
84 char *of_flat_tree = NULL;
87 bootmap_base = getenv_bootm_low();
88 size = getenv_bootm_size();
91 if (((u64)bootmap_base + size) > (CFG_SDRAM_BASE + (u64)gd->ram_size))
92 puts("WARNING: bootm_low + bootm_size exceed total memory\n");
93 if ((bootmap_base + size) > get_effective_memsize())
94 puts("WARNING: bootm_low + bootm_size exceed eff. memory\n");
97 size = min(size, get_effective_memsize());
98 size = min(size, CFG_LINUX_LOWMEM_MAX_SIZE);
100 if (size < getenv_bootm_size()) {
101 ulong base = bootmap_base + size;
102 printf("WARNING: adjusting available memory to %x\n", size);
103 lmb_reserve(lmb, base, getenv_bootm_size() - size);
107 * Booting a (Linux) kernel image
109 * Allocate space for command line and board info - the
110 * address should be as high as possible within the reach of
111 * the kernel (see CFG_BOOTMAPSZ settings), but in unused
112 * memory, which means far enough below the current stack
116 debug ("## Current stack ends at 0x%08lx\n", sp);
118 /* adjust sp by 1K to be safe */
120 lmb_reserve(lmb, sp, (CFG_SDRAM_BASE + get_effective_memsize() - sp));
122 #if defined(CONFIG_OF_LIBFDT)
123 /* find flattened device tree */
124 ret = boot_get_fdt (cmdtp, flag, argc, argv, images, &of_flat_tree, &of_size);
131 /* allocate space and init command line */
132 ret = boot_get_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);
134 puts("ERROR with allocation of cmdline\n");
138 /* allocate space for kernel copy of board info */
139 ret = boot_get_kbd (lmb, &kbd, bootmap_base);
141 puts("ERROR with allocation of kernel bd\n");
144 set_clocks_in_mhz(kbd);
147 /* find kernel entry point */
148 if (images->legacy_hdr_valid) {
149 ep = image_get_ep (images->legacy_hdr_os);
150 #if defined(CONFIG_FIT)
151 } else if (images->fit_uname_os) {
152 ret = fit_image_get_entry (images->fit_hdr_os,
153 images->fit_noffset_os, &ep);
155 puts ("Can't get entry point property!\n");
160 puts ("Could not find kernel entry point!\n");
163 kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))ep;
166 ret = boot_get_ramdisk (argc, argv, images, IH_ARCH_PPC,
167 &rd_data_start, &rd_data_end);
171 rd_len = rd_data_end - rd_data_start;
173 #if defined(CONFIG_OF_LIBFDT)
174 ret = boot_relocate_fdt (lmb, bootmap_base,
175 cmdtp, flag, argc, argv, &of_flat_tree, &of_size);
178 * Add the chosen node if it doesn't exist, add the env and bd_t
179 * if the user wants it (the logic is in the subroutines).
182 /* pass in dummy initrd info, we'll fix up later */
183 if (fdt_chosen(of_flat_tree, rd_data_start, rd_data_end, 0) < 0) {
184 fdt_error ("/chosen node create failed");
187 #ifdef CONFIG_OF_HAS_UBOOT_ENV
188 if (fdt_env(of_flat_tree) < 0) {
189 fdt_error ("/u-boot-env node create failed");
193 #ifdef CONFIG_OF_HAS_BD_T
194 if (fdt_bd_t(of_flat_tree) < 0) {
195 fdt_error ("/bd_t node create failed");
199 #ifdef CONFIG_OF_BOARD_SETUP
200 /* Call the board-specific fixup routine */
201 ft_board_setup(of_flat_tree, gd->bd);
204 #endif /* CONFIG_OF_LIBFDT */
206 ret = boot_ramdisk_high (lmb, rd_data_start, rd_len, &initrd_start, &initrd_end);
210 #if defined(CONFIG_OF_LIBFDT)
211 /* fixup the initrd now that we know where it should be */
212 if ((of_flat_tree) && (initrd_start && initrd_end)) {
214 int total = fdt_num_mem_rsv(of_flat_tree);
217 /* Look for the dummy entry and delete it */
218 for (j = 0; j < total; j++) {
219 fdt_get_mem_rsv(of_flat_tree, j, &addr, &size);
220 if (addr == rd_data_start) {
221 fdt_del_mem_rsv(of_flat_tree, j);
226 ret = fdt_add_mem_rsv(of_flat_tree, initrd_start,
227 initrd_end - initrd_start + 1);
229 printf("fdt_chosen: %s\n", fdt_strerror(ret));
233 do_fixup_by_path_u32(of_flat_tree, "/chosen",
234 "linux,initrd-start", initrd_start, 0);
235 do_fixup_by_path_u32(of_flat_tree, "/chosen",
236 "linux,initrd-end", initrd_end, 0);
239 debug ("## Transferring control to Linux (at address %08lx) ...\n",
242 show_boot_progress (15);
244 #if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
245 unlock_ram_in_cache();
247 if (!images->autostart)
250 #if defined(CONFIG_OF_LIBFDT)
251 if (of_flat_tree) { /* device tree; boot new style */
253 * Linux Kernel Parameters (passing device tree):
254 * r3: pointer to the fdt, followed by the board info data
255 * r4: physical pointer to the kernel itself
260 debug (" Booting using OF flat tree...\n");
261 (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
262 /* does not return */
267 * Linux Kernel Parameters (passing board info data):
268 * r3: ptr to board info data
269 * r4: initrd_start or 0 if no initrd
270 * r5: initrd_end - unused if r4 is 0
271 * r6: Start of command line string
272 * r7: End of command line string
274 debug (" Booting using board info...\n");
275 (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
276 /* does not return */
281 if (images->autostart)
282 do_reset (cmdtp, flag, argc, argv);
286 static ulong get_sp (void)
290 asm( "mr %0,1": "=r"(sp) : );
294 static void set_clocks_in_mhz (bd_t *kbd)
298 if ((s = getenv ("clocks_in_mhz")) != NULL) {
299 /* convert all clock information to MHz */
300 kbd->bi_intfreq /= 1000000L;
301 kbd->bi_busfreq /= 1000000L;
302 #if defined(CONFIG_MPC8220)
303 kbd->bi_inpfreq /= 1000000L;
304 kbd->bi_pcifreq /= 1000000L;
305 kbd->bi_pevfreq /= 1000000L;
306 kbd->bi_flbfreq /= 1000000L;
307 kbd->bi_vcofreq /= 1000000L;
309 #if defined(CONFIG_CPM2)
310 kbd->bi_cpmfreq /= 1000000L;
311 kbd->bi_brgfreq /= 1000000L;
312 kbd->bi_sccfreq /= 1000000L;
313 kbd->bi_vco /= 1000000L;
315 #if defined(CONFIG_MPC5xxx)
316 kbd->bi_ipbfreq /= 1000000L;
317 kbd->bi_pcifreq /= 1000000L;
318 #endif /* CONFIG_MPC5xxx */
322 #if defined(CONFIG_OF_LIBFDT)
323 static void fdt_error (const char *msg)
327 puts (" - must RESET the board to recover.\n");
330 static image_header_t *image_get_fdt (ulong fdt_addr)
332 image_header_t *fdt_hdr = (image_header_t *)fdt_addr;
334 image_print_contents (fdt_hdr);
336 puts (" Verifying Checksum ... ");
337 if (!image_check_hcrc (fdt_hdr)) {
338 fdt_error ("fdt header checksum invalid");
342 if (!image_check_dcrc (fdt_hdr)) {
343 fdt_error ("fdt checksum invalid");
348 if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
349 fdt_error ("uImage is not a fdt");
352 if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
353 fdt_error ("uImage is compressed");
356 if (fdt_check_header ((char *)image_get_data (fdt_hdr)) != 0) {
357 fdt_error ("uImage data is not a fdt");
364 * fit_check_fdt - verify FIT format FDT subimage
365 * @fit_hdr: pointer to the FIT header
366 * fdt_noffset: FDT subimage node offset within FIT image
367 * @verify: data CRC verification flag
369 * fit_check_fdt() verifies integrity of the FDT subimage and from
370 * specified FIT image.
376 #if defined(CONFIG_FIT)
377 static int fit_check_fdt (const void *fit, int fdt_noffset, int verify)
379 fit_image_print (fit, fdt_noffset, " ");
382 puts (" Verifying Hash Integrity ... ");
383 if (!fit_image_check_hashes (fit, fdt_noffset)) {
384 fdt_error ("Bad Data Hash");
390 if (!fit_image_check_type (fit, fdt_noffset, IH_TYPE_FLATDT)) {
391 fdt_error ("Not a FDT image");
395 if (!fit_image_check_comp (fit, fdt_noffset, IH_COMP_NONE)) {
396 fdt_error ("FDT image is compressed");
402 #endif /* CONFIG_FIT */
404 static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
405 bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
408 image_header_t *fdt_hdr;
409 char *fdt_blob = NULL;
410 ulong image_start, image_end;
411 ulong load_start, load_end;
412 #if defined(CONFIG_FIT)
414 const char *fit_uname_config = NULL;
415 const char *fit_uname_fdt = NULL;
423 *of_flat_tree = NULL;
426 if (argc > 3 || genimg_has_config (images)) {
427 #if defined(CONFIG_FIT)
430 * If the FDT blob comes from the FIT image and the
431 * FIT image address is omitted in the command line
432 * argument, try to use ramdisk or os FIT image
433 * address or default load address.
435 if (images->fit_uname_rd)
436 default_addr = (ulong)images->fit_hdr_rd;
437 else if (images->fit_uname_os)
438 default_addr = (ulong)images->fit_hdr_os;
440 default_addr = load_addr;
442 if (fit_parse_conf (argv[3], default_addr,
443 &fdt_addr, &fit_uname_config)) {
444 debug ("* fdt: config '%s' from image at 0x%08lx\n",
445 fit_uname_config, fdt_addr);
446 } else if (fit_parse_subimage (argv[3], default_addr,
447 &fdt_addr, &fit_uname_fdt)) {
448 debug ("* fdt: subimage '%s' from image at 0x%08lx\n",
449 fit_uname_fdt, fdt_addr);
453 fdt_addr = simple_strtoul(argv[3], NULL, 16);
454 debug ("* fdt: cmdline image address = 0x%08lx\n",
457 #if defined(CONFIG_FIT)
459 /* use FIT configuration provided in first bootm
462 fdt_addr = (ulong)images->fit_hdr_os;
463 fit_uname_config = images->fit_uname_cfg;
464 debug ("* fdt: using config '%s' from image at 0x%08lx\n",
465 fit_uname_config, fdt_addr);
468 * Check whether configuration has FDT blob defined,
469 * if not quit silently.
471 fit_hdr = (void *)fdt_addr;
472 cfg_noffset = fit_conf_get_node (fit_hdr,
474 if (cfg_noffset < 0) {
475 debug ("* fdt: no such config\n");
479 fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
481 if (fdt_noffset < 0) {
482 debug ("* fdt: no fdt in config\n");
488 debug ("## Checking for 'FDT'/'FDT Image' at %08lx\n",
491 /* copy from dataflash if needed */
492 fdt_addr = genimg_get_image (fdt_addr);
495 * Check if there is an FDT image at the
496 * address provided in the second bootm argument
497 * check image type, for FIT images get a FIT node.
499 switch (genimg_get_format ((void *)fdt_addr)) {
500 case IMAGE_FORMAT_LEGACY:
501 /* verify fdt_addr points to a valid image header */
502 printf ("## Flattened Device Tree from Legacy Image at %08lx\n",
504 fdt_hdr = image_get_fdt (fdt_addr);
509 * move image data to the load address,
510 * make sure we don't overwrite initial image
512 image_start = (ulong)fdt_hdr;
513 image_end = image_get_image_end (fdt_hdr);
515 load_start = image_get_load (fdt_hdr);
516 load_end = load_start + image_get_data_size (fdt_hdr);
518 if ((load_start < image_end) && (load_end > image_start)) {
519 fdt_error ("fdt overwritten");
523 debug (" Loading FDT from 0x%08lx to 0x%08lx\n",
524 image_get_data (fdt_hdr), load_start);
526 memmove ((void *)load_start,
527 (void *)image_get_data (fdt_hdr),
528 image_get_data_size (fdt_hdr));
530 fdt_blob = (char *)load_start;
532 case IMAGE_FORMAT_FIT:
534 * This case will catch both: new uImage format
535 * (libfdt based) and raw FDT blob (also libfdt
538 #if defined(CONFIG_FIT)
539 /* check FDT blob vs FIT blob */
540 if (fit_check_format ((const void *)fdt_addr)) {
544 fit_hdr = (void *)fdt_addr;
545 printf ("## Flattened Device Tree from FIT Image at %08lx\n",
548 if (!fit_uname_fdt) {
550 * no FDT blob image node unit name,
551 * try to get config node first. If
552 * config unit node name is NULL
553 * fit_conf_get_node() will try to
554 * find default config node
556 cfg_noffset = fit_conf_get_node (fit_hdr,
559 if (cfg_noffset < 0) {
560 fdt_error ("Could not find configuration node\n");
564 fit_uname_config = fdt_get_name (fit_hdr,
566 printf (" Using '%s' configuration\n",
569 fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
571 fit_uname_fdt = fit_get_name (fit_hdr,
574 /* get FDT component image node offset */
575 fdt_noffset = fit_image_get_node (fit_hdr,
578 if (fdt_noffset < 0) {
579 fdt_error ("Could not find subimage node\n");
583 printf (" Trying '%s' FDT blob subimage\n",
586 if (!fit_check_fdt (fit_hdr, fdt_noffset,
590 /* get ramdisk image data address and length */
591 if (fit_image_get_data (fit_hdr, fdt_noffset,
593 fdt_error ("Could not find FDT subimage data");
597 /* verift that image data is a proper FDT blob */
598 if (fdt_check_header ((char *)data) != 0) {
599 fdt_error ("Subimage data is not a FTD");
604 * move image data to the load address,
605 * make sure we don't overwrite initial image
607 image_start = (ulong)fit_hdr;
608 image_end = fit_get_end (fit_hdr);
610 if (fit_image_get_load (fit_hdr, fdt_noffset,
612 load_end = load_start + size;
614 if ((load_start < image_end) &&
615 (load_end > image_start)) {
616 fdt_error ("FDT overwritten");
620 printf (" Loading FDT from 0x%08lx to 0x%08lx\n",
621 (ulong)data, load_start);
623 memmove ((void *)load_start,
626 fdt_blob = (char *)load_start;
628 fdt_blob = (char *)data;
631 images->fit_hdr_fdt = fit_hdr;
632 images->fit_uname_fdt = fit_uname_fdt;
633 images->fit_noffset_fdt = fdt_noffset;
641 debug ("* fdt: raw FDT blob\n");
642 printf ("## Flattened Device Tree blob at %08lx\n", fdt_blob);
643 fdt_blob = (char *)fdt_addr;
647 fdt_error ("Did not find a cmdline Flattened Device Tree");
651 printf (" Booting using the fdt blob at 0x%x\n", fdt_blob);
653 } else if (images->legacy_hdr_valid &&
654 image_check_type (images->legacy_hdr_os, IH_TYPE_MULTI)) {
656 ulong fdt_data, fdt_len;
659 * Now check if we have a legacy multi-component image,
660 * get second entry data start address and len.
662 printf ("## Flattened Device Tree from multi "
663 "component Image at %08lX\n",
664 (ulong)images->legacy_hdr_os);
666 image_multi_getimg (images->legacy_hdr_os, 2, &fdt_data, &fdt_len);
669 fdt_blob = (char *)fdt_data;
670 printf (" Booting using the fdt at 0x%x\n", fdt_blob);
672 if (fdt_check_header (fdt_blob) != 0) {
673 fdt_error ("image is not a fdt");
677 if (be32_to_cpu (fdt_totalsize (fdt_blob)) != fdt_len) {
678 fdt_error ("fdt size != image size");
682 fdt_error ("Did not find a Flattened Device Tree "
683 "in a legacy multi-component image");
687 debug ("## No Flattened Device Tree\n");
691 *of_flat_tree = fdt_blob;
692 *of_size = be32_to_cpu (fdt_totalsize (fdt_blob));
693 debug (" of_flat_tree at 0x%08lx size 0x%08lx\n",
694 *of_flat_tree, *of_size);
699 do_reset (cmdtp, flag, argc, argv);
703 static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
704 cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
705 char **of_flat_tree, ulong *of_size)
707 char *fdt_blob = *of_flat_tree;
715 if (fdt_check_header (fdt_blob) != 0) {
716 fdt_error ("image is not a fdt");
721 /* move the blob if it is in flash (set relocate) */
722 if (addr2info ((ulong)fdt_blob) != NULL)
727 * The blob must be within CFG_BOOTMAPSZ,
728 * so we flag it to be copied if it is not.
730 if (fdt_blob >= (char *)CFG_BOOTMAPSZ)
733 of_len = be32_to_cpu (fdt_totalsize (fdt_blob));
735 /* move flattend device tree if needed */
740 /* position on a 4K boundary before the alloc_current */
741 of_start = lmb_alloc_base(lmb, of_len, 0x1000,
742 (CFG_BOOTMAPSZ + bootmap_base));
745 puts("device tree - allocation error\n");
749 debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
750 (ulong)fdt_blob, (ulong)fdt_blob + of_len - 1,
753 printf (" Loading Device Tree to %08lx, end %08lx ... ",
754 of_start, of_start + of_len - 1);
756 err = fdt_open_into (fdt_blob, (void *)of_start, of_len);
758 fdt_error ("fdt move failed");
763 *of_flat_tree = (char *)of_start;
765 *of_flat_tree = fdt_blob;
766 lmb_reserve(lmb, (ulong)fdt, of_len);