/* * (C) Copyright 2000-2004 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * (C) Copyright 2003 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #if (CONFIG_COMMANDS & CFG_CMD_XIMG) /* * Multi Image extract */ #include <common.h> #include <command.h> #include <image.h> #include <asm/byteorder.h> int do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) { ulong addr = load_addr, dest = 0; ulong data, len, checksum; ulong *len_ptr; int i, verify, part = 0; char pbuf[10], *s; image_header_t header; s = getenv("verify"); verify = (s && (*s == 'n')) ? 0 : 1; if (argc > 1) { addr = simple_strtoul(argv[1], NULL, 16); } if (argc > 2) { part = simple_strtoul(argv[2], NULL, 16); } if (argc > 3) { dest = simple_strtoul(argv[3], NULL, 16); } printf("## Copying from image at %08lx ...\n", addr); /* Copy header so we can blank CRC field for re-calculation */ memmove(&header, (char *) addr, sizeof (image_header_t)); if (ntohl(header.ih_magic) != IH_MAGIC) { printf("Bad Magic Number\n"); return 1; } data = (ulong) & header; len = sizeof (image_header_t); checksum = ntohl(header.ih_hcrc); header.ih_hcrc = 0; if (crc32(0, (char *) data, len) != checksum) { printf("Bad Header Checksum\n"); return 1; } #ifdef DEBUG print_image_hdr((image_header_t *) addr); #endif data = addr + sizeof (image_header_t); len = ntohl(header.ih_size); if (header.ih_type != IH_TYPE_MULTI) { printf("Wrong Image Type for %s command\n", cmdtp->name); return 1; } if (header.ih_comp != IH_COMP_NONE) { printf("Wrong Compression Type for %s command\n", cmdtp->name); return 1; } if (verify) { printf(" Verifying Checksum ... "); if (crc32(0, (char *) data, len) != ntohl(header.ih_dcrc)) { printf("Bad Data CRC\n"); return 1; } printf("OK\n"); } len_ptr = (ulong *) data; data += 4; /* terminator */ for (i = 0; len_ptr[i]; ++i) { data += 4; if (argc > 2 && part > i) { u_long tail; len = ntohl(len_ptr[i]); tail = len % 4; data += len; if (tail) { data += 4 - tail; } } } if (argc > 2 && part >= i) { printf("Bad Image Part\n"); return 1; } len = ntohl(len_ptr[part]); if (argc > 3) { memcpy((char *) dest, (char *) data, len); } sprintf(pbuf, "%8lx", data); setenv("fileaddr", pbuf); sprintf(pbuf, "%8lx", len); setenv("filesize", pbuf); return 0; } U_BOOT_CMD(imxtract, 4, 1, do_imgextract, "imxtract- extract a part of a multi-image\n", "addr part [dest]\n" " - extract <part> from image at <addr> and copy to <dest>\n"); #endif /* CONFIG_COMMANDS & CFG_CMD_XIMG */