Add 'imgextract' command: extract one part of a multi file image.master
wdenk
20 years ago
parent
547b4cb25e
commit
48abe7bfab
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/*
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* (C) Copyright 2000-2004 |
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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* |
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* (C) Copyright 2003 |
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* Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de> |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#if (CONFIG_COMMANDS & CFG_CMD_XIMG) |
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/*
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* Multi Image extract |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <image.h> |
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#include <asm/byteorder.h> |
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int |
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do_imgextract(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) |
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{ |
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ulong addr = load_addr, dest = 0; |
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ulong data, len, checksum; |
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ulong *len_ptr; |
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int i, verify, part = 0; |
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char pbuf[10], *s; |
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image_header_t header; |
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s = getenv("verify"); |
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verify = (s && (*s == 'n')) ? 0 : 1; |
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if (argc > 1) { |
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addr = simple_strtoul(argv[1], NULL, 16); |
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} |
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if (argc > 2) { |
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part = simple_strtoul(argv[2], NULL, 16); |
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} |
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if (argc > 3) { |
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dest = simple_strtoul(argv[3], NULL, 16); |
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} |
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printf("## Copying from image at %08lx ...\n", addr); |
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/* Copy header so we can blank CRC field for re-calculation */ |
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memmove(&header, (char *) addr, sizeof (image_header_t)); |
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if (ntohl(header.ih_magic) != IH_MAGIC) { |
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printf("Bad Magic Number\n"); |
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return 1; |
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} |
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data = (ulong) & header; |
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len = sizeof (image_header_t); |
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checksum = ntohl(header.ih_hcrc); |
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header.ih_hcrc = 0; |
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if (crc32(0, (char *) data, len) != checksum) { |
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printf("Bad Header Checksum\n"); |
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return 1; |
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} |
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#ifdef DEBUG |
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print_image_hdr((image_header_t *) addr); |
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#endif |
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data = addr + sizeof (image_header_t); |
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len = ntohl(header.ih_size); |
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if (header.ih_type != IH_TYPE_MULTI) { |
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printf("Wrong Image Type for %s command\n", cmdtp->name); |
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return 1; |
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} |
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if (header.ih_comp != IH_COMP_NONE) { |
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printf("Wrong Compression Type for %s command\n", cmdtp->name); |
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return 1; |
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} |
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if (verify) { |
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printf(" Verifying Checksum ... "); |
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if (crc32(0, (char *) data, len) != ntohl(header.ih_dcrc)) { |
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printf("Bad Data CRC\n"); |
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return 1; |
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} |
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printf("OK\n"); |
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} |
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len_ptr = (ulong *) data; |
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data += 4; /* terminator */ |
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for (i = 0; len_ptr[i]; ++i) { |
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data += 4; |
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if (argc > 2 && part > i) { |
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u_long tail; |
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len = ntohl(len_ptr[i]); |
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tail = len % 4; |
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data += len; |
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if (tail) { |
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data += 4 - tail; |
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} |
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} |
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} |
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if (argc > 2 && part >= i) { |
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printf("Bad Image Part\n"); |
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return 1; |
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} |
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len = ntohl(len_ptr[part]); |
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if (argc > 3) { |
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memcpy((char *) dest, (char *) data, len); |
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} |
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sprintf(pbuf, "%8lx", data); |
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setenv("fileaddr", pbuf); |
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sprintf(pbuf, "%8lx", len); |
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setenv("filesize", pbuf); |
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return 0; |
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} |
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U_BOOT_CMD(imxtract, 4, 1, do_imgextract, |
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"imxtract- extract a part of a multi-image\n", |
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"addr part [dest]\n" |
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" - extract <part> from image at <addr> and copy to <dest>\n"); |
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#endif /* CONFIG_COMMANDS & CFG_CMD_XIMG */ |
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