mirror of
https://github.com/AsahiLinux/u-boot
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144 lines
3.4 KiB
C
144 lines
3.4 KiB
C
/*
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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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