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;
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);
156 rd_len = images->rd_end - images->rd_start;
158 #if defined(CONFIG_OF_LIBFDT)
159 ret = boot_relocate_fdt (lmb, bootmap_base,
160 cmdtp, flag, argc, argv, &of_flat_tree, &of_size);
163 * Add the chosen node if it doesn't exist, add the env and bd_t
164 * if the user wants it (the logic is in the subroutines).
167 /* pass in dummy initrd info, we'll fix up later */
168 if (fdt_chosen(of_flat_tree, images->rd_start, images->rd_end, 0) < 0) {
169 fdt_error ("/chosen node create failed");
172 #ifdef CONFIG_OF_BOARD_SETUP
173 /* Call the board-specific fixup routine */
174 ft_board_setup(of_flat_tree, gd->bd);
178 /* Fixup the fdt memreserve now that we know how big it is */
182 int total = fdt_num_mem_rsv(of_flat_tree);
185 for (j = 0; j < total; j++) {
186 fdt_get_mem_rsv(of_flat_tree, j, &addr, &size);
187 if (addr == (uint64_t)(u32)of_flat_tree) {
188 fdt_del_mem_rsv(of_flat_tree, j);
193 /* Delete the old LMB reservation */
194 lmb_free(lmb, (phys_addr_t)(u32)of_flat_tree,
195 (phys_size_t)fdt_totalsize(of_flat_tree));
197 /* Calculate the actual size of the fdt */
198 actualsize = fdt_off_dt_strings(of_flat_tree) +
199 fdt_size_dt_strings(of_flat_tree);
201 /* Make it so the fdt ends on a page boundary */
202 actualsize = ALIGN(actualsize, 0x1000);
203 actualsize = actualsize - ((uint)of_flat_tree & 0xfff);
205 /* Change the fdt header to reflect the correct size */
206 fdt_set_totalsize(of_flat_tree, actualsize);
207 of_size = actualsize;
209 /* Add the new reservation */
210 ret = fdt_add_mem_rsv(of_flat_tree, (uint)of_flat_tree,
213 /* Create a new LMB reservation */
214 lmb_reserve(lmb, (ulong)of_flat_tree, of_size);
216 #endif /* CONFIG_OF_LIBFDT */
218 ret = boot_ramdisk_high (lmb, images->rd_start, rd_len, &initrd_start, &initrd_end);
222 #if defined(CONFIG_OF_LIBFDT)
223 /* fixup the initrd now that we know where it should be */
224 if ((of_flat_tree) && (initrd_start && initrd_end)) {
226 int total = fdt_num_mem_rsv(of_flat_tree);
229 /* Look for the dummy entry and delete it */
230 for (j = 0; j < total; j++) {
231 fdt_get_mem_rsv(of_flat_tree, j, &addr, &size);
232 if (addr == images->rd_start) {
233 fdt_del_mem_rsv(of_flat_tree, j);
238 ret = fdt_add_mem_rsv(of_flat_tree, initrd_start,
239 initrd_end - initrd_start + 1);
241 printf("fdt_chosen: %s\n", fdt_strerror(ret));
245 do_fixup_by_path_u32(of_flat_tree, "/chosen",
246 "linux,initrd-start", initrd_start, 0);
247 do_fixup_by_path_u32(of_flat_tree, "/chosen",
248 "linux,initrd-end", initrd_end, 0);
251 debug ("## Transferring control to Linux (at address %08lx) ...\n",
254 show_boot_progress (15);
256 #if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
257 unlock_ram_in_cache();
260 #if defined(CONFIG_OF_LIBFDT)
261 if (of_flat_tree) { /* device tree; boot new style */
263 * Linux Kernel Parameters (passing device tree):
264 * r3: pointer to the fdt
268 * r7: size of IMA in bytes
272 #if defined(CONFIG_85xx) || defined(CONFIG_440)
273 #define EPAPR_MAGIC (0x45504150)
275 #define EPAPR_MAGIC (0x65504150)
278 debug (" Booting using OF flat tree...\n");
279 (*kernel) ((bd_t *)of_flat_tree, 0, 0, EPAPR_MAGIC,
280 CFG_BOOTMAPSZ, 0, 0);
281 /* does not return */
286 * Linux Kernel Parameters (passing board info data):
287 * r3: ptr to board info data
288 * r4: initrd_start or 0 if no initrd
289 * r5: initrd_end - unused if r4 is 0
290 * r6: Start of command line string
291 * r7: End of command line string
295 debug (" Booting using board info...\n");
296 (*kernel) (kbd, initrd_start, initrd_end,
297 cmd_start, cmd_end, 0, 0);
298 /* does not return */
303 do_reset (cmdtp, flag, argc, argv);
307 static ulong get_sp (void)
311 asm( "mr %0,1": "=r"(sp) : );
315 static void set_clocks_in_mhz (bd_t *kbd)
319 if ((s = getenv ("clocks_in_mhz")) != NULL) {
320 /* convert all clock information to MHz */
321 kbd->bi_intfreq /= 1000000L;
322 kbd->bi_busfreq /= 1000000L;
323 #if defined(CONFIG_MPC8220)
324 kbd->bi_inpfreq /= 1000000L;
325 kbd->bi_pcifreq /= 1000000L;
326 kbd->bi_pevfreq /= 1000000L;
327 kbd->bi_flbfreq /= 1000000L;
328 kbd->bi_vcofreq /= 1000000L;
330 #if defined(CONFIG_CPM2)
331 kbd->bi_cpmfreq /= 1000000L;
332 kbd->bi_brgfreq /= 1000000L;
333 kbd->bi_sccfreq /= 1000000L;
334 kbd->bi_vco /= 1000000L;
336 #if defined(CONFIG_MPC5xxx)
337 kbd->bi_ipbfreq /= 1000000L;
338 kbd->bi_pcifreq /= 1000000L;
339 #endif /* CONFIG_MPC5xxx */
343 #if defined(CONFIG_OF_LIBFDT)
344 static void fdt_error (const char *msg)
348 puts (" - must RESET the board to recover.\n");
351 static image_header_t *image_get_fdt (ulong fdt_addr)
353 image_header_t *fdt_hdr = (image_header_t *)fdt_addr;
355 image_print_contents (fdt_hdr);
357 puts (" Verifying Checksum ... ");
358 if (!image_check_hcrc (fdt_hdr)) {
359 fdt_error ("fdt header checksum invalid");
363 if (!image_check_dcrc (fdt_hdr)) {
364 fdt_error ("fdt checksum invalid");
369 if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
370 fdt_error ("uImage is not a fdt");
373 if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
374 fdt_error ("uImage is compressed");
377 if (fdt_check_header ((char *)image_get_data (fdt_hdr)) != 0) {
378 fdt_error ("uImage data is not a fdt");
385 * fit_check_fdt - verify FIT format FDT subimage
386 * @fit_hdr: pointer to the FIT header
387 * fdt_noffset: FDT subimage node offset within FIT image
388 * @verify: data CRC verification flag
390 * fit_check_fdt() verifies integrity of the FDT subimage and from
391 * specified FIT image.
397 #if defined(CONFIG_FIT)
398 static int fit_check_fdt (const void *fit, int fdt_noffset, int verify)
400 fit_image_print (fit, fdt_noffset, " ");
403 puts (" Verifying Hash Integrity ... ");
404 if (!fit_image_check_hashes (fit, fdt_noffset)) {
405 fdt_error ("Bad Data Hash");
411 if (!fit_image_check_type (fit, fdt_noffset, IH_TYPE_FLATDT)) {
412 fdt_error ("Not a FDT image");
416 if (!fit_image_check_comp (fit, fdt_noffset, IH_COMP_NONE)) {
417 fdt_error ("FDT image is compressed");
423 #endif /* CONFIG_FIT */
425 static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
426 bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
429 image_header_t *fdt_hdr;
430 char *fdt_blob = NULL;
431 ulong image_start, image_end;
432 ulong load_start, load_end;
433 #if defined(CONFIG_FIT)
435 const char *fit_uname_config = NULL;
436 const char *fit_uname_fdt = NULL;
444 *of_flat_tree = NULL;
447 if (argc > 3 || genimg_has_config (images)) {
448 #if defined(CONFIG_FIT)
451 * If the FDT blob comes from the FIT image and the
452 * FIT image address is omitted in the command line
453 * argument, try to use ramdisk or os FIT image
454 * address or default load address.
456 if (images->fit_uname_rd)
457 default_addr = (ulong)images->fit_hdr_rd;
458 else if (images->fit_uname_os)
459 default_addr = (ulong)images->fit_hdr_os;
461 default_addr = load_addr;
463 if (fit_parse_conf (argv[3], default_addr,
464 &fdt_addr, &fit_uname_config)) {
465 debug ("* fdt: config '%s' from image at 0x%08lx\n",
466 fit_uname_config, fdt_addr);
467 } else if (fit_parse_subimage (argv[3], default_addr,
468 &fdt_addr, &fit_uname_fdt)) {
469 debug ("* fdt: subimage '%s' from image at 0x%08lx\n",
470 fit_uname_fdt, fdt_addr);
474 fdt_addr = simple_strtoul(argv[3], NULL, 16);
475 debug ("* fdt: cmdline image address = 0x%08lx\n",
478 #if defined(CONFIG_FIT)
480 /* use FIT configuration provided in first bootm
483 fdt_addr = (ulong)images->fit_hdr_os;
484 fit_uname_config = images->fit_uname_cfg;
485 debug ("* fdt: using config '%s' from image at 0x%08lx\n",
486 fit_uname_config, fdt_addr);
489 * Check whether configuration has FDT blob defined,
490 * if not quit silently.
492 fit_hdr = (void *)fdt_addr;
493 cfg_noffset = fit_conf_get_node (fit_hdr,
495 if (cfg_noffset < 0) {
496 debug ("* fdt: no such config\n");
500 fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
502 if (fdt_noffset < 0) {
503 debug ("* fdt: no fdt in config\n");
509 debug ("## Checking for 'FDT'/'FDT Image' at %08lx\n",
512 /* copy from dataflash if needed */
513 fdt_addr = genimg_get_image (fdt_addr);
516 * Check if there is an FDT image at the
517 * address provided in the second bootm argument
518 * check image type, for FIT images get a FIT node.
520 switch (genimg_get_format ((void *)fdt_addr)) {
521 case IMAGE_FORMAT_LEGACY:
522 /* verify fdt_addr points to a valid image header */
523 printf ("## Flattened Device Tree from Legacy Image at %08lx\n",
525 fdt_hdr = image_get_fdt (fdt_addr);
530 * move image data to the load address,
531 * make sure we don't overwrite initial image
533 image_start = (ulong)fdt_hdr;
534 image_end = image_get_image_end (fdt_hdr);
536 load_start = image_get_load (fdt_hdr);
537 load_end = load_start + image_get_data_size (fdt_hdr);
539 if ((load_start < image_end) && (load_end > image_start)) {
540 fdt_error ("fdt overwritten");
544 debug (" Loading FDT from 0x%08lx to 0x%08lx\n",
545 image_get_data (fdt_hdr), load_start);
547 memmove ((void *)load_start,
548 (void *)image_get_data (fdt_hdr),
549 image_get_data_size (fdt_hdr));
551 fdt_blob = (char *)load_start;
553 case IMAGE_FORMAT_FIT:
555 * This case will catch both: new uImage format
556 * (libfdt based) and raw FDT blob (also libfdt
559 #if defined(CONFIG_FIT)
560 /* check FDT blob vs FIT blob */
561 if (fit_check_format ((const void *)fdt_addr)) {
565 fit_hdr = (void *)fdt_addr;
566 printf ("## Flattened Device Tree from FIT Image at %08lx\n",
569 if (!fit_uname_fdt) {
571 * no FDT blob image node unit name,
572 * try to get config node first. If
573 * config unit node name is NULL
574 * fit_conf_get_node() will try to
575 * find default config node
577 cfg_noffset = fit_conf_get_node (fit_hdr,
580 if (cfg_noffset < 0) {
581 fdt_error ("Could not find configuration node\n");
585 fit_uname_config = fdt_get_name (fit_hdr,
587 printf (" Using '%s' configuration\n",
590 fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
592 fit_uname_fdt = fit_get_name (fit_hdr,
595 /* get FDT component image node offset */
596 fdt_noffset = fit_image_get_node (fit_hdr,
599 if (fdt_noffset < 0) {
600 fdt_error ("Could not find subimage node\n");
604 printf (" Trying '%s' FDT blob subimage\n",
607 if (!fit_check_fdt (fit_hdr, fdt_noffset,
611 /* get ramdisk image data address and length */
612 if (fit_image_get_data (fit_hdr, fdt_noffset,
614 fdt_error ("Could not find FDT subimage data");
618 /* verift that image data is a proper FDT blob */
619 if (fdt_check_header ((char *)data) != 0) {
620 fdt_error ("Subimage data is not a FTD");
625 * move image data to the load address,
626 * make sure we don't overwrite initial image
628 image_start = (ulong)fit_hdr;
629 image_end = fit_get_end (fit_hdr);
631 if (fit_image_get_load (fit_hdr, fdt_noffset,
633 load_end = load_start + size;
635 if ((load_start < image_end) &&
636 (load_end > image_start)) {
637 fdt_error ("FDT overwritten");
641 printf (" Loading FDT from 0x%08lx to 0x%08lx\n",
642 (ulong)data, load_start);
644 memmove ((void *)load_start,
647 fdt_blob = (char *)load_start;
649 fdt_blob = (char *)data;
652 images->fit_hdr_fdt = fit_hdr;
653 images->fit_uname_fdt = fit_uname_fdt;
654 images->fit_noffset_fdt = fdt_noffset;
662 fdt_blob = (char *)fdt_addr;
663 debug ("* fdt: raw FDT blob\n");
664 printf ("## Flattened Device Tree blob at %08lx\n", (long)fdt_blob);
668 fdt_error ("Did not find a cmdline Flattened Device Tree");
672 printf (" Booting using the fdt blob at 0x%x\n", (int)fdt_blob);
674 } else if (images->legacy_hdr_valid &&
675 image_check_type (&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
677 ulong fdt_data, fdt_len;
680 * Now check if we have a legacy multi-component image,
681 * get second entry data start address and len.
683 printf ("## Flattened Device Tree from multi "
684 "component Image at %08lX\n",
685 (ulong)images->legacy_hdr_os);
687 image_multi_getimg (images->legacy_hdr_os, 2, &fdt_data, &fdt_len);
690 fdt_blob = (char *)fdt_data;
691 printf (" Booting using the fdt at 0x%x\n", (int)fdt_blob);
693 if (fdt_check_header (fdt_blob) != 0) {
694 fdt_error ("image is not a fdt");
698 if (be32_to_cpu (fdt_totalsize (fdt_blob)) != fdt_len) {
699 fdt_error ("fdt size != image size");
703 debug ("## No Flattened Device Tree\n");
707 debug ("## No Flattened Device Tree\n");
711 *of_flat_tree = fdt_blob;
712 *of_size = be32_to_cpu (fdt_totalsize (fdt_blob));
713 debug (" of_flat_tree at 0x%08lx size 0x%08lx\n",
714 *of_flat_tree, *of_size);
719 do_reset (cmdtp, flag, argc, argv);
723 static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
724 cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
725 char **of_flat_tree, ulong *of_size)
727 char *fdt_blob = *of_flat_tree;
735 if (fdt_check_header (fdt_blob) != 0) {
736 fdt_error ("image is not a fdt");
741 /* move the blob if it is in flash (set relocate) */
742 if (addr2info ((ulong)fdt_blob) != NULL)
747 * The blob needs to be inside the boot mapping.
749 if (fdt_blob < (char *)bootmap_base)
752 if ((fdt_blob + *of_size + CFG_FDT_PAD) >=
753 ((char *)CFG_BOOTMAPSZ + bootmap_base))
756 /* move flattend device tree if needed */
761 /* position on a 4K boundary before the alloc_current */
762 /* Pad the FDT by a specified amount */
763 of_len = *of_size + CFG_FDT_PAD;
764 of_start = (unsigned long)lmb_alloc_base(lmb, of_len, 0x1000,
765 (CFG_BOOTMAPSZ + bootmap_base));
768 puts("device tree - allocation error\n");
772 debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
773 (ulong)fdt_blob, (ulong)fdt_blob + *of_size - 1,
776 printf (" Loading Device Tree to %08lx, end %08lx ... ",
777 of_start, of_start + of_len - 1);
779 err = fdt_open_into (fdt_blob, (void *)of_start, of_len);
781 fdt_error ("fdt move failed");
786 *of_flat_tree = (char *)of_start;
789 *of_flat_tree = fdt_blob;
790 of_len = (CFG_BOOTMAPSZ + bootmap_base) - (ulong)fdt_blob;
791 lmb_reserve(lmb, (ulong)fdt_blob, of_len);
792 fdt_set_totalsize(*of_flat_tree, of_len);