diff options
Diffstat (limited to 'common/cmd_ximg.c')
| -rw-r--r-- | common/cmd_ximg.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/common/cmd_ximg.c b/common/cmd_ximg.c new file mode 100644 index 0000000..8359153 --- /dev/null +++ b/common/cmd_ximg.c @@ -0,0 +1,144 @@ +/* + * (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 */ |