-
-#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 ulong get_fdt (ulong alloc_current,
- cmd_tbl_t *cmdtp, int flag,
- int argc, char *argv[],
- image_header_t *hdr, char **of_flat_tree)
-{
- image_header_t *fdt_hdr;
- ulong fdt_relocate = 0;
- char *fdt = NULL;
- ulong new_alloc_current;
-
- if(argc > 3) {
- fdt = (char *)simple_strtoul (argv[3], NULL, 16);
-
- debug ("## Checking for 'FDT'/'FDT image' at %08lx\n", fdt);
-
- /* copy from dataflash if needed */
- fdt = (char *)gen_get_image ((ulong)fdt);
- fdt_hdr = (image_header_t *)fdt;
-
- if (fdt_check_header (fdt) == 0) {
- printf ("## Flattened Device Tree blob at %08lx\n", fdt);
-#ifndef CFG_NO_FLASH
- if (addr2info ((ulong)fdt) != NULL)
- fdt_relocate = 1;
-#endif
- } else if (image_check_magic (fdt_hdr)) {
- ulong image_start, image_end;
- ulong load_start, load_end;
-
- printf ("## Flattened Device Tree Image at %08lx\n",
- fdt_hdr);
-
- print_image_hdr (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 = (char *)image_get_load (fdt_hdr);
- } else {
- fdt_error ("Did not find a Flattened Device Tree");
- do_reset (cmdtp, flag, argc, argv);
- }
- printf (" Booting using the fdt at 0x%x\n",
- fdt);
- } else if (image_check_type (hdr, IH_TYPE_MULTI)) {
- ulong fdt_data, fdt_len;
-
- printf ("## Flattened Device Tree from multi "
- "component Image at %08lX\n", (ulong)hdr);
-
- image_multi_getimg (hdr, 2, &fdt_data, &fdt_len);
- if (fdt_len) {
-
- fdt = (char *)fdt_data;
- printf (" Booting using the fdt at 0x%x\n", fdt);
-
-#ifndef CFG_NO_FLASH
- /* move the blob if it is in flash (set of_relocte) */
- if (addr2info ((ulong)fdt) != NULL)
- fdt_relocate = 1;
-#endif
-
- if (fdt_check_header (fdt) != 0) {
- fdt_error ("image is not a fdt");
- do_reset (cmdtp, flag, argc, argv);
- }
-
- if (be32_to_cpu (fdt_totalsize (fdt)) != fdt_len) {
- fdt_error ("fdt size != image size");
- do_reset (cmdtp, flag, argc, argv);
- }
- } else {
- debug (" Did not find a Flattened Device Tree");
- }
- }
-
-#ifdef CFG_BOOTMAPSZ
- /*
- * The blob must be within CFG_BOOTMAPSZ,
- * so we flag it to be copied if it is not.
- */
- if (fdt >= (char *)CFG_BOOTMAPSZ)
- fdt_relocate = 1;
-#endif
-
- /* move flattend device tree if needed */
- if (fdt_relocate) {
- int err;
- ulong of_start, of_len;
-
- of_len = be32_to_cpu (fdt_totalsize (fdt));
-
- /* 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, (ulong)fdt + 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, (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;
- new_alloc_current = alloc_current;
- }
-
- return new_alloc_current;
-}
-#endif