diff options
Diffstat (limited to 'common/cmd_bootm.c')
| -rw-r--r-- | common/cmd_bootm.c | 70 |
1 files changed, 65 insertions, 5 deletions
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index f1c0eb4d1..6eb258ec2 100644 --- a/common/cmd_bootm.c +++ b/common/cmd_bootm.c @@ -528,7 +528,7 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, void (*kernel)(bd_t *, ulong, ulong, ulong, ulong); image_header_t *hdr = &header; #ifdef CONFIG_OF_FLAT_TREE - char *of_flat_tree; + char *of_flat_tree = NULL; #endif if ((s = getenv ("initrd_high")) != NULL) { @@ -737,14 +737,73 @@ do_bootm_linux (cmd_tbl_t *cmdtp, int flag, } #ifdef CONFIG_OF_FLAT_TREE - if (argc >= 3) - { + if(argc >= 3) { of_flat_tree = (char *) simple_strtoul(argv[3], NULL, 16); - printf ("Booting using flat device tree at 0x%x\n", + hdr = (image_header_t *)of_flat_tree; + + if (*(ulong *)of_flat_tree == OF_DT_HEADER) { +#ifndef CFG_NO_FLASH + if (addr2info((ulong)of_flat_tree) != NULL) { + printf ("Cannot modify flat device tree stored in flash\n" \ + "Copy to memory before using the bootm command\n"); + return; + } +#endif + } else if (ntohl(hdr->ih_magic) == IH_MAGIC) { + printf("## Flat Device Tree Image at %08lX\n", hdr); + print_image_hdr(hdr); + + if ((ntohl(hdr->ih_load) < ((unsigned long)hdr + ntohl(hdr->ih_size) + sizeof(hdr))) && + ((ntohl(hdr->ih_load) + ntohl(hdr->ih_size)) > (unsigned long)hdr)) { + printf ("ERROR: Load address overwrites Flat Device Tree uImage\n"); + return; + } + + printf(" Verifying Checksum ... "); + memmove (&header, (char *)hdr, sizeof(image_header_t)); + checksum = ntohl(header.ih_hcrc); + header.ih_hcrc = 0; + + if(checksum != crc32(0, (uchar *)&header, sizeof(image_header_t))) { + printf("ERROR: Flat Device Tree header checksum is invalid\n"); + return; + } + + checksum = ntohl(hdr->ih_dcrc); + addr = (ulong)((uchar *)(hdr) + sizeof(image_header_t)); + len = ntohl(hdr->ih_size); + + if(checksum != crc32(0, (uchar *)addr, len)) { + printf("ERROR: Flat Device Tree checksum is invalid\n"); + return; + } + printf("OK\n"); + + if (ntohl(hdr->ih_type) != IH_TYPE_FLATDT) { + printf ("ERROR: uImage not Flat Device Tree type\n"); + return; + } + if (ntohl(hdr->ih_comp) != IH_COMP_NONE) { + printf("ERROR: uImage is not uncompressed\n"); + return; + } + if (*((ulong *)(of_flat_tree + sizeof(image_header_t))) != OF_DT_HEADER) { + printf ("ERROR: uImage data is not a flat device tree\n"); + return; + } + + memmove((void *)ntohl(hdr->ih_load), + (void *)(of_flat_tree + sizeof(image_header_t)), + ntohl(hdr->ih_size)); + of_flat_tree = (char *)ntohl(hdr->ih_load); + } else { + printf ("Did not find a flat flat device tree at address %08lX\n", of_flat_tree); + return; + } + printf (" Booting using flat device tree at 0x%x\n", of_flat_tree); } #endif - if (!data) { debug ("No initrd\n"); } @@ -1272,6 +1331,7 @@ print_type (image_header_t *hdr) case IH_TYPE_MULTI: type = "Multi-File Image"; break; case IH_TYPE_FIRMWARE: type = "Firmware"; break; case IH_TYPE_SCRIPT: type = "Script"; break; + case IH_TYPE_FLATDT: type = "Flat Device Tree"; break; default: type = "Unknown Image"; break; } |