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_BOARD_SETUP
188 /* Call the board-specific fixup routine */
189 ft_board_setup(of_flat_tree, gd->bd);
192 #endif /* CONFIG_OF_LIBFDT */
194 ret = boot_ramdisk_high (lmb, rd_data_start, rd_len, &initrd_start, &initrd_end);
198 #if defined(CONFIG_OF_LIBFDT)
199 /* fixup the initrd now that we know where it should be */
200 if ((of_flat_tree) && (initrd_start && initrd_end)) {
202 int total = fdt_num_mem_rsv(of_flat_tree);
205 /* Look for the dummy entry and delete it */
206 for (j = 0; j < total; j++) {
207 fdt_get_mem_rsv(of_flat_tree, j, &addr, &size);
208 if (addr == rd_data_start) {
209 fdt_del_mem_rsv(of_flat_tree, j);
214 ret = fdt_add_mem_rsv(of_flat_tree, initrd_start,
215 initrd_end - initrd_start + 1);
217 printf("fdt_chosen: %s\n", fdt_strerror(ret));
221 do_fixup_by_path_u32(of_flat_tree, "/chosen",
222 "linux,initrd-start", initrd_start, 0);
223 do_fixup_by_path_u32(of_flat_tree, "/chosen",
224 "linux,initrd-end", initrd_end, 0);
227 debug ("## Transferring control to Linux (at address %08lx) ...\n",
230 show_boot_progress (15);
232 #if defined(CFG_INIT_RAM_LOCK) && !defined(CONFIG_E500)
233 unlock_ram_in_cache();
235 if (!images->autostart)
238 #if defined(CONFIG_OF_LIBFDT)
239 if (of_flat_tree) { /* device tree; boot new style */
241 * Linux Kernel Parameters (passing device tree):
242 * r3: pointer to the fdt, followed by the board info data
243 * r4: physical pointer to the kernel itself
248 debug (" Booting using OF flat tree...\n");
249 (*kernel) ((bd_t *)of_flat_tree, (ulong)kernel, 0, 0, 0);
250 /* does not return */
255 * Linux Kernel Parameters (passing board info data):
256 * r3: ptr to board info data
257 * r4: initrd_start or 0 if no initrd
258 * r5: initrd_end - unused if r4 is 0
259 * r6: Start of command line string
260 * r7: End of command line string
262 debug (" Booting using board info...\n");
263 (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end);
264 /* does not return */
269 if (images->autostart)
270 do_reset (cmdtp, flag, argc, argv);
274 static ulong get_sp (void)
278 asm( "mr %0,1": "=r"(sp) : );
282 static void set_clocks_in_mhz (bd_t *kbd)
286 if ((s = getenv ("clocks_in_mhz")) != NULL) {
287 /* convert all clock information to MHz */
288 kbd->bi_intfreq /= 1000000L;
289 kbd->bi_busfreq /= 1000000L;
290 #if defined(CONFIG_MPC8220)
291 kbd->bi_inpfreq /= 1000000L;
292 kbd->bi_pcifreq /= 1000000L;
293 kbd->bi_pevfreq /= 1000000L;
294 kbd->bi_flbfreq /= 1000000L;
295 kbd->bi_vcofreq /= 1000000L;
297 #if defined(CONFIG_CPM2)
298 kbd->bi_cpmfreq /= 1000000L;
299 kbd->bi_brgfreq /= 1000000L;
300 kbd->bi_sccfreq /= 1000000L;
301 kbd->bi_vco /= 1000000L;
303 #if defined(CONFIG_MPC5xxx)
304 kbd->bi_ipbfreq /= 1000000L;
305 kbd->bi_pcifreq /= 1000000L;
306 #endif /* CONFIG_MPC5xxx */
310 #if defined(CONFIG_OF_LIBFDT)
311 static void fdt_error (const char *msg)
315 puts (" - must RESET the board to recover.\n");
318 static image_header_t *image_get_fdt (ulong fdt_addr)
320 image_header_t *fdt_hdr = (image_header_t *)fdt_addr;
322 image_print_contents (fdt_hdr);
324 puts (" Verifying Checksum ... ");
325 if (!image_check_hcrc (fdt_hdr)) {
326 fdt_error ("fdt header checksum invalid");
330 if (!image_check_dcrc (fdt_hdr)) {
331 fdt_error ("fdt checksum invalid");
336 if (!image_check_type (fdt_hdr, IH_TYPE_FLATDT)) {
337 fdt_error ("uImage is not a fdt");
340 if (image_get_comp (fdt_hdr) != IH_COMP_NONE) {
341 fdt_error ("uImage is compressed");
344 if (fdt_check_header ((char *)image_get_data (fdt_hdr)) != 0) {
345 fdt_error ("uImage data is not a fdt");
352 * fit_check_fdt - verify FIT format FDT subimage
353 * @fit_hdr: pointer to the FIT header
354 * fdt_noffset: FDT subimage node offset within FIT image
355 * @verify: data CRC verification flag
357 * fit_check_fdt() verifies integrity of the FDT subimage and from
358 * specified FIT image.
364 #if defined(CONFIG_FIT)
365 static int fit_check_fdt (const void *fit, int fdt_noffset, int verify)
367 fit_image_print (fit, fdt_noffset, " ");
370 puts (" Verifying Hash Integrity ... ");
371 if (!fit_image_check_hashes (fit, fdt_noffset)) {
372 fdt_error ("Bad Data Hash");
378 if (!fit_image_check_type (fit, fdt_noffset, IH_TYPE_FLATDT)) {
379 fdt_error ("Not a FDT image");
383 if (!fit_image_check_comp (fit, fdt_noffset, IH_COMP_NONE)) {
384 fdt_error ("FDT image is compressed");
390 #endif /* CONFIG_FIT */
392 static int boot_get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
393 bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
396 image_header_t *fdt_hdr;
397 char *fdt_blob = NULL;
398 ulong image_start, image_end;
399 ulong load_start, load_end;
400 #if defined(CONFIG_FIT)
402 const char *fit_uname_config = NULL;
403 const char *fit_uname_fdt = NULL;
411 *of_flat_tree = NULL;
414 if (argc > 3 || genimg_has_config (images)) {
415 #if defined(CONFIG_FIT)
418 * If the FDT blob comes from the FIT image and the
419 * FIT image address is omitted in the command line
420 * argument, try to use ramdisk or os FIT image
421 * address or default load address.
423 if (images->fit_uname_rd)
424 default_addr = (ulong)images->fit_hdr_rd;
425 else if (images->fit_uname_os)
426 default_addr = (ulong)images->fit_hdr_os;
428 default_addr = load_addr;
430 if (fit_parse_conf (argv[3], default_addr,
431 &fdt_addr, &fit_uname_config)) {
432 debug ("* fdt: config '%s' from image at 0x%08lx\n",
433 fit_uname_config, fdt_addr);
434 } else if (fit_parse_subimage (argv[3], default_addr,
435 &fdt_addr, &fit_uname_fdt)) {
436 debug ("* fdt: subimage '%s' from image at 0x%08lx\n",
437 fit_uname_fdt, fdt_addr);
441 fdt_addr = simple_strtoul(argv[3], NULL, 16);
442 debug ("* fdt: cmdline image address = 0x%08lx\n",
445 #if defined(CONFIG_FIT)
447 /* use FIT configuration provided in first bootm
450 fdt_addr = (ulong)images->fit_hdr_os;
451 fit_uname_config = images->fit_uname_cfg;
452 debug ("* fdt: using config '%s' from image at 0x%08lx\n",
453 fit_uname_config, fdt_addr);
456 * Check whether configuration has FDT blob defined,
457 * if not quit silently.
459 fit_hdr = (void *)fdt_addr;
460 cfg_noffset = fit_conf_get_node (fit_hdr,
462 if (cfg_noffset < 0) {
463 debug ("* fdt: no such config\n");
467 fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
469 if (fdt_noffset < 0) {
470 debug ("* fdt: no fdt in config\n");
476 debug ("## Checking for 'FDT'/'FDT Image' at %08lx\n",
479 /* copy from dataflash if needed */
480 fdt_addr = genimg_get_image (fdt_addr);
483 * Check if there is an FDT image at the
484 * address provided in the second bootm argument
485 * check image type, for FIT images get a FIT node.
487 switch (genimg_get_format ((void *)fdt_addr)) {
488 case IMAGE_FORMAT_LEGACY:
489 /* verify fdt_addr points to a valid image header */
490 printf ("## Flattened Device Tree from Legacy Image at %08lx\n",
492 fdt_hdr = image_get_fdt (fdt_addr);
497 * move image data to the load address,
498 * make sure we don't overwrite initial image
500 image_start = (ulong)fdt_hdr;
501 image_end = image_get_image_end (fdt_hdr);
503 load_start = image_get_load (fdt_hdr);
504 load_end = load_start + image_get_data_size (fdt_hdr);
506 if ((load_start < image_end) && (load_end > image_start)) {
507 fdt_error ("fdt overwritten");
511 debug (" Loading FDT from 0x%08lx to 0x%08lx\n",
512 image_get_data (fdt_hdr), load_start);
514 memmove ((void *)load_start,
515 (void *)image_get_data (fdt_hdr),
516 image_get_data_size (fdt_hdr));
518 fdt_blob = (char *)load_start;
520 case IMAGE_FORMAT_FIT:
522 * This case will catch both: new uImage format
523 * (libfdt based) and raw FDT blob (also libfdt
526 #if defined(CONFIG_FIT)
527 /* check FDT blob vs FIT blob */
528 if (fit_check_format ((const void *)fdt_addr)) {
532 fit_hdr = (void *)fdt_addr;
533 printf ("## Flattened Device Tree from FIT Image at %08lx\n",
536 if (!fit_uname_fdt) {
538 * no FDT blob image node unit name,
539 * try to get config node first. If
540 * config unit node name is NULL
541 * fit_conf_get_node() will try to
542 * find default config node
544 cfg_noffset = fit_conf_get_node (fit_hdr,
547 if (cfg_noffset < 0) {
548 fdt_error ("Could not find configuration node\n");
552 fit_uname_config = fdt_get_name (fit_hdr,
554 printf (" Using '%s' configuration\n",
557 fdt_noffset = fit_conf_get_fdt_node (fit_hdr,
559 fit_uname_fdt = fit_get_name (fit_hdr,
562 /* get FDT component image node offset */
563 fdt_noffset = fit_image_get_node (fit_hdr,
566 if (fdt_noffset < 0) {
567 fdt_error ("Could not find subimage node\n");
571 printf (" Trying '%s' FDT blob subimage\n",
574 if (!fit_check_fdt (fit_hdr, fdt_noffset,
578 /* get ramdisk image data address and length */
579 if (fit_image_get_data (fit_hdr, fdt_noffset,
581 fdt_error ("Could not find FDT subimage data");
585 /* verift that image data is a proper FDT blob */
586 if (fdt_check_header ((char *)data) != 0) {
587 fdt_error ("Subimage data is not a FTD");
592 * move image data to the load address,
593 * make sure we don't overwrite initial image
595 image_start = (ulong)fit_hdr;
596 image_end = fit_get_end (fit_hdr);
598 if (fit_image_get_load (fit_hdr, fdt_noffset,
600 load_end = load_start + size;
602 if ((load_start < image_end) &&
603 (load_end > image_start)) {
604 fdt_error ("FDT overwritten");
608 printf (" Loading FDT from 0x%08lx to 0x%08lx\n",
609 (ulong)data, load_start);
611 memmove ((void *)load_start,
614 fdt_blob = (char *)load_start;
616 fdt_blob = (char *)data;
619 images->fit_hdr_fdt = fit_hdr;
620 images->fit_uname_fdt = fit_uname_fdt;
621 images->fit_noffset_fdt = fdt_noffset;
629 debug ("* fdt: raw FDT blob\n");
630 printf ("## Flattened Device Tree blob at %08lx\n", fdt_blob);
631 fdt_blob = (char *)fdt_addr;
635 fdt_error ("Did not find a cmdline Flattened Device Tree");
639 printf (" Booting using the fdt blob at 0x%x\n", fdt_blob);
641 } else if (images->legacy_hdr_valid &&
642 image_check_type (images->legacy_hdr_os, IH_TYPE_MULTI)) {
644 ulong fdt_data, fdt_len;
647 * Now check if we have a legacy multi-component image,
648 * get second entry data start address and len.
650 printf ("## Flattened Device Tree from multi "
651 "component Image at %08lX\n",
652 (ulong)images->legacy_hdr_os);
654 image_multi_getimg (images->legacy_hdr_os, 2, &fdt_data, &fdt_len);
657 fdt_blob = (char *)fdt_data;
658 printf (" Booting using the fdt at 0x%x\n", fdt_blob);
660 if (fdt_check_header (fdt_blob) != 0) {
661 fdt_error ("image is not a fdt");
665 if (be32_to_cpu (fdt_totalsize (fdt_blob)) != fdt_len) {
666 fdt_error ("fdt size != image size");
670 fdt_error ("Did not find a Flattened Device Tree "
671 "in a legacy multi-component image");
675 debug ("## No Flattened Device Tree\n");
679 *of_flat_tree = fdt_blob;
680 *of_size = be32_to_cpu (fdt_totalsize (fdt_blob));
681 debug (" of_flat_tree at 0x%08lx size 0x%08lx\n",
682 *of_flat_tree, *of_size);
687 do_reset (cmdtp, flag, argc, argv);
691 static int boot_relocate_fdt (struct lmb *lmb, ulong bootmap_base,
692 cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
693 char **of_flat_tree, ulong *of_size)
695 char *fdt_blob = *of_flat_tree;
703 if (fdt_check_header (fdt_blob) != 0) {
704 fdt_error ("image is not a fdt");
709 /* move the blob if it is in flash (set relocate) */
710 if (addr2info ((ulong)fdt_blob) != NULL)
715 * The blob must be within CFG_BOOTMAPSZ,
716 * so we flag it to be copied if it is not.
718 if (fdt_blob >= (char *)CFG_BOOTMAPSZ)
721 of_len = be32_to_cpu (fdt_totalsize (fdt_blob));
723 /* move flattend device tree if needed */
728 /* position on a 4K boundary before the alloc_current */
729 of_start = lmb_alloc_base(lmb, of_len, 0x1000,
730 (CFG_BOOTMAPSZ + bootmap_base));
733 puts("device tree - allocation error\n");
737 debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
738 (ulong)fdt_blob, (ulong)fdt_blob + of_len - 1,
741 printf (" Loading Device Tree to %08lx, end %08lx ... ",
742 of_start, of_start + of_len - 1);
744 err = fdt_open_into (fdt_blob, (void *)of_start, of_len);
746 fdt_error ("fdt move failed");
751 *of_flat_tree = (char *)of_start;
753 *of_flat_tree = fdt_blob;
754 lmb_reserve(lmb, (ulong)fdt, of_len);