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/*
* (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 */
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