-
-#if defined(CONFIG_OF_LIBFDT)
-static void fdt_error (const char *msg)
-{
- puts ("ERROR: ");
- puts (msg);
- puts (" - must RESET the board to recover.\n");
-}
-
-static void get_fdt (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
- bootm_headers_t *images, char **of_flat_tree, ulong *of_size)
-{
- ulong fdt_addr;
- image_header_t *fdt_hdr;
- char *fdt_blob = NULL;
- ulong image_start, image_end;
- ulong load_start, load_end;
-#if defined(CONFIG_FIT)
- void *fit_hdr;
- const char *fit_uname_config = NULL;
- const char *fit_uname_fdt = NULL;
- ulong default_addr;
-#endif
-
- if (argc > 3) {
-#if defined(CONFIG_FIT)
- /*
- * If the FDT blob comes from the FIT image and the FIT image
- * address is omitted in the command line argument, try to use
- * ramdisk or os FIT image address or default load address.
- */
- if (images->fit_uname_rd)
- default_addr = (ulong)images->fit_hdr_rd;
- else if (images->fit_uname_os)
- default_addr = (ulong)images->fit_hdr_os;
- else
- default_addr = load_addr;
-
- if (fit_parse_conf (argv[3], default_addr,
- &fdt_addr, &fit_uname_config)) {
- debug ("* fdt: config '%s' from image at 0x%08lx\n",
- fit_uname_config, fdt_addr);
- } else if (fit_parse_subimage (argv[3], default_addr,
- &fdt_addr, &fit_uname_fdt)) {
- debug ("* fdt: subimage '%s' from image at 0x%08lx\n",
- fit_uname_fdt, fdt_addr);
- } else
-#endif
- {
- fdt_addr = simple_strtoul(argv[3], NULL, 16);
- debug ("* fdt: cmdline image address = 0x%08lx\n",
- fdt_addr);
- }
-
- debug ("## Checking for 'FDT'/'FDT image' at %08lx\n",
- fdt_addr);
-
- /* copy from dataflash if needed */
- fdt_addr = gen_get_image (fdt_addr);
-
- /*
- * Check if there is an FDT image at the
- * address provided in the second bootm argument
- * check image type, for FIT images get a FIT node.
- */
- switch (gen_image_get_format ((void *)fdt_addr)) {
- case IMAGE_FORMAT_LEGACY:
- debug ("* fdt: legacy format image\n");
-
- fdt_hdr = (image_header_t *)fdt_addr;
- printf ("## Flattened Device Tree Legacy Image at %08lx\n",
- fdt_hdr);
-
- image_print_contents (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 ((char *)image_get_data (fdt_hdr)) != 0) {
- fdt_error ("uImage data is not a fdt");
- do_reset (cmdtp, flag, argc, argv);
- }
-
- memmove ((void *)image_get_load (fdt_hdr),
- (void *)image_get_data (fdt_hdr),
- image_get_data_size (fdt_hdr));
-
- fdt_blob = (char *)image_get_load (fdt_hdr);
- break;
-#if defined(CONFIG_FIT)
- case IMAGE_FORMAT_FIT:
-
- /* check FDT blob vs FIT hdr */
- if (fit_uname_config || fit_uname_fdt) {
- /*
- * FIT image
- */
- fit_hdr = (void *)fdt_addr;
- debug ("* fdt: FIT format image\n");
- fit_unsupported_reset ("PPC fdt");
- do_reset (cmdtp, flag, argc, argv);
- } else {
- /*
- * FDT blob
- */
- printf ("## Flattened Device Tree blob at %08lx\n", fdt_blob);
- fdt_blob = (char *)fdt_addr;
- }
- break;
-#endif
- default:
- fdt_error ("Did not find a cmdline Flattened Device Tree");
- do_reset (cmdtp, flag, argc, argv);
- }
-
- printf (" Booting using the fdt blob at 0x%x\n", fdt_blob);
-
- } else if (images->legacy_hdr_valid &&
- image_check_type (images->legacy_hdr_os, IH_TYPE_MULTI)) {
-
- ulong fdt_data, fdt_len;
-
- /*
- * Now check if we have a legacy multi-component image,
- * get second entry data start address and len.
- */
- printf ("## Flattened Device Tree from multi "
- "component Image at %08lX\n",
- (ulong)images->legacy_hdr_os);
-
- image_multi_getimg (images->legacy_hdr_os, 2, &fdt_data, &fdt_len);
- if (fdt_len) {
-
- fdt_blob = (char *)fdt_data;
- printf (" Booting using the fdt at 0x%x\n", fdt_blob);
-
- if (fdt_check_header (fdt_blob) != 0) {
- fdt_error ("image is not a fdt");
- do_reset (cmdtp, flag, argc, argv);
- }
-
- if (be32_to_cpu (fdt_totalsize (fdt_blob)) != fdt_len) {
- fdt_error ("fdt size != image size");
- do_reset (cmdtp, flag, argc, argv);
- }
- } else {
- fdt_error ("Did not find a Flattened Device Tree "
- "in a legacy multi-component image");
- do_reset (cmdtp, flag, argc, argv);
- }
- } else {
- debug ("## No Flattened Device Tree\n");
- *of_flat_tree = NULL;
- *of_size = 0;
- return;
- }
-
- *of_flat_tree = fdt_blob;
- *of_size = be32_to_cpu (fdt_totalsize (fdt_blob));
- debug (" of_flat_tree at 0x%08lx size 0x%08lx\n",
- *of_flat_tree, *of_size);
-}
-
-static ulong fdt_relocate (ulong alloc_current,
- cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
- char **of_flat_tree, ulong *of_size)
-{
- char *fdt_blob = *of_flat_tree;
- ulong relocate = 0;
- ulong new_alloc_current;
-
- /* nothing to do */
- if (*of_size == 0)
- return alloc_current;
-
- if (fdt_check_header (fdt_blob) != 0) {
- fdt_error ("image is not a fdt");
- do_reset (cmdtp, flag, argc, argv);
- }
-
-#ifndef CFG_NO_FLASH
- /* move the blob if it is in flash (set relocate) */
- if (addr2info ((ulong)fdt_blob) != NULL)
- relocate = 1;
-#endif
-
-#ifdef CFG_BOOTMAPSZ
- /*
- * The blob must be within CFG_BOOTMAPSZ,
- * so we flag it to be copied if it is not.
- */
- if (fdt_blob >= (char *)CFG_BOOTMAPSZ)
- relocate = 1;
-#endif
-
- /* move flattend device tree if needed */
- if (relocate) {
- int err;
- ulong of_start, of_len;
-
- of_len = *of_size;
-
- /* position on a 4K boundary before the alloc_current */
- of_start = alloc_current - of_len;
- of_start &= ~(4096 - 1); /* align on page */
-
- debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
- (ulong)fdt_blob, (ulong)fdt_blob + of_len - 1,
- of_len, of_len);
-
- printf (" Loading Device Tree to %08lx, end %08lx ... ",
- of_start, of_start + of_len - 1);
-
- err = fdt_open_into (fdt_blob, (void *)of_start, of_len);
- if (err != 0) {
- fdt_error ("fdt move failed");
- do_reset (cmdtp, flag, argc, argv);
- }
- puts ("OK\n");
-
- *of_flat_tree = (char *)of_start;
- new_alloc_current = of_start;
- } else {
- *of_flat_tree = fdt_blob;
- new_alloc_current = alloc_current;
- }
-
- return new_alloc_current;
-}
-#endif