You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
470 lines
10 KiB
C
470 lines
10 KiB
C
/*
|
|
* mtd - simple memory technology device manipulation tool
|
|
*
|
|
* Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,
|
|
* Felix Fietkau <nbd@openwrt.org>
|
|
*
|
|
* 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.
|
|
*
|
|
* $Id$
|
|
*
|
|
* The code is based on the linux-mtd examples.
|
|
*/
|
|
|
|
#include <limits.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/syscall.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <error.h>
|
|
#include <time.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/reboot.h>
|
|
#include <linux/reboot.h>
|
|
|
|
#include "mtd.h"
|
|
|
|
#define TRX_MAGIC 0x30524448 /* "HDR0" */
|
|
#define BUFSIZE (16 * 1024)
|
|
#define MAX_ARGS 8
|
|
|
|
#define DEBUG
|
|
|
|
#define SYSTYPE_UNKNOWN 0
|
|
#define SYSTYPE_BROADCOM 1
|
|
/* to be continued */
|
|
|
|
struct trx_header {
|
|
uint32_t magic; /* "HDR0" */
|
|
uint32_t len; /* Length of file including header */
|
|
uint32_t crc32; /* 32-bit CRC from flag_version to end of file */
|
|
uint32_t flag_version; /* 0:15 flags, 16:31 version */
|
|
uint32_t offsets[3]; /* Offsets of partitions from start of header */
|
|
};
|
|
|
|
char buf[BUFSIZE];
|
|
int buflen;
|
|
int quiet;
|
|
|
|
#ifdef target_brcm
|
|
int
|
|
image_check_brcm(int imagefd, const char *mtd)
|
|
{
|
|
struct trx_header *trx = (struct trx_header *) buf;
|
|
struct mtd_info_user mtdInfo;
|
|
int fd;
|
|
|
|
if (strcmp(mtd, "linux") != 0)
|
|
return 1;
|
|
|
|
buflen = read(imagefd, buf, 32);
|
|
if (buflen < 32) {
|
|
fprintf(stdout, "Could not get image header, file too small (%ld bytes)\n", buflen);
|
|
return 0;
|
|
}
|
|
|
|
switch(trx->magic) {
|
|
case 0x47343557: /* W54G */
|
|
case 0x53343557: /* W54S */
|
|
case 0x73343557: /* W54s */
|
|
case 0x46343557: /* W54F */
|
|
case 0x55343557: /* W54U */
|
|
/* ignore the first 32 bytes */
|
|
buflen = read(imagefd, buf, sizeof(struct trx_header));
|
|
break;
|
|
}
|
|
|
|
if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
|
|
if (quiet < 2) {
|
|
fprintf(stderr, "Bad trx header\n");
|
|
fprintf(stderr, "If this is a firmware in bin format, like some of the\n"
|
|
"original firmware files are, you need to convert it to trx.\n");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* check if image fits to mtd device */
|
|
fd = mtd_open(mtd, O_RDWR | O_SYNC);
|
|
if(fd < 0) {
|
|
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
|
|
exit(1);
|
|
}
|
|
|
|
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
|
|
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
|
|
exit(1);
|
|
}
|
|
|
|
if(mtdInfo.size < trx->len) {
|
|
fprintf(stderr, "Image too big for partition: %s\n", mtd);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
#endif /* target_brcm */
|
|
|
|
int
|
|
image_check(int imagefd, const char *mtd)
|
|
{
|
|
int fd, systype;
|
|
size_t count;
|
|
char *c;
|
|
FILE *f;
|
|
|
|
#ifdef target_brcm
|
|
return image_check_brcm(imagefd, mtd);
|
|
#endif
|
|
}
|
|
|
|
int mtd_check(char *mtd)
|
|
{
|
|
struct mtd_info_user mtdInfo;
|
|
int fd;
|
|
|
|
fd = mtd_open(mtd, O_RDWR | O_SYNC);
|
|
if(fd < 0) {
|
|
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
|
|
return 0;
|
|
}
|
|
|
|
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
|
|
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
mtd_unlock(const char *mtd)
|
|
{
|
|
int fd;
|
|
struct mtd_info_user mtdInfo;
|
|
struct erase_info_user mtdLockInfo;
|
|
|
|
fd = mtd_open(mtd, O_RDWR | O_SYNC);
|
|
if(fd < 0) {
|
|
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
|
|
exit(1);
|
|
}
|
|
|
|
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
|
|
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
|
|
mtdLockInfo.start = 0;
|
|
mtdLockInfo.length = mtdInfo.size;
|
|
if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) {
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
mtd_open(const char *mtd, int flags)
|
|
{
|
|
FILE *fp;
|
|
char dev[PATH_MAX];
|
|
int i;
|
|
|
|
if ((fp = fopen("/proc/mtd", "r"))) {
|
|
while (fgets(dev, sizeof(dev), fp)) {
|
|
if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) {
|
|
snprintf(dev, sizeof(dev), "/dev/mtd/%d", i);
|
|
fclose(fp);
|
|
return open(dev, flags);
|
|
}
|
|
}
|
|
fclose(fp);
|
|
}
|
|
|
|
return open(mtd, flags);
|
|
}
|
|
|
|
int
|
|
mtd_erase(const char *mtd)
|
|
{
|
|
int fd;
|
|
struct mtd_info_user mtdInfo;
|
|
struct erase_info_user mtdEraseInfo;
|
|
|
|
fd = mtd_open(mtd, O_RDWR | O_SYNC);
|
|
if(fd < 0) {
|
|
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
|
|
exit(1);
|
|
}
|
|
|
|
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
|
|
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
|
|
mtdEraseInfo.length = mtdInfo.erasesize;
|
|
|
|
for (mtdEraseInfo.start = 0;
|
|
mtdEraseInfo.start < mtdInfo.size;
|
|
mtdEraseInfo.start += mtdInfo.erasesize) {
|
|
|
|
ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
|
|
if(ioctl(fd, MEMERASE, &mtdEraseInfo))
|
|
fprintf(stderr, "Failed to erase block on %s at 0x%x\n", mtd, mtdEraseInfo.start);
|
|
}
|
|
|
|
close(fd);
|
|
return 0;
|
|
|
|
}
|
|
|
|
int
|
|
mtd_write(int imagefd, const char *mtd)
|
|
{
|
|
int fd, i, result;
|
|
size_t r, w, e;
|
|
struct mtd_info_user mtdInfo;
|
|
struct erase_info_user mtdEraseInfo;
|
|
int ret = 0;
|
|
|
|
fd = mtd_open(mtd, O_RDWR | O_SYNC);
|
|
if(fd < 0) {
|
|
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
|
|
exit(1);
|
|
}
|
|
|
|
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
|
|
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
|
|
close(fd);
|
|
exit(1);
|
|
}
|
|
|
|
r = w = e = 0;
|
|
if (!quiet)
|
|
fprintf(stderr, " [ ]");
|
|
|
|
for (;;) {
|
|
/* buffer may contain data already (from trx check) */
|
|
r = buflen;
|
|
r += read(imagefd, buf + buflen, BUFSIZE - buflen);
|
|
w += r;
|
|
|
|
/* EOF */
|
|
if (r <= 0) break;
|
|
|
|
/* need to erase the next block before writing data to it */
|
|
while (w > e) {
|
|
mtdEraseInfo.start = e;
|
|
mtdEraseInfo.length = mtdInfo.erasesize;
|
|
|
|
if (!quiet)
|
|
fprintf(stderr, "\b\b\b[e]");
|
|
/* erase the chunk */
|
|
if (ioctl (fd,MEMERASE,&mtdEraseInfo) < 0) {
|
|
fprintf(stderr, "Erasing mtd failed: %s\n", mtd);
|
|
exit(1);
|
|
}
|
|
e += mtdInfo.erasesize;
|
|
}
|
|
|
|
if (!quiet)
|
|
fprintf(stderr, "\b\b\b[w]");
|
|
|
|
if ((result = write(fd, buf, r)) < r) {
|
|
if (result < 0) {
|
|
fprintf(stderr, "Error writing image.\n");
|
|
exit(1);
|
|
} else {
|
|
fprintf(stderr, "Insufficient space.\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
buflen = 0;
|
|
}
|
|
if (!quiet)
|
|
fprintf(stderr, "\b\b\b\b");
|
|
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
void usage(void)
|
|
{
|
|
fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>\n\n"
|
|
"The device is in the format of mtdX (eg: mtd4) or its label.\n"
|
|
"mtd recognizes these commands:\n"
|
|
" unlock unlock the device\n"
|
|
" erase erase all data on device\n"
|
|
" write <imagefile>|- write <imagefile> (use - for stdin) to device\n"
|
|
"Following options are available:\n"
|
|
" -q quiet mode (once: no [w] on writing,\n"
|
|
" twice: no status messages)\n"
|
|
" -r reboot after successful command\n"
|
|
" -f force write without trx checks\n"
|
|
" -e <device> erase <device> before executing the command\n\n"
|
|
"Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n"
|
|
" mtd -r write linux.trx linux\n\n");
|
|
exit(1);
|
|
}
|
|
|
|
int main (int argc, char **argv)
|
|
{
|
|
int ch, i, boot, unlock, imagefd, force, unlocked;
|
|
char *erase[MAX_ARGS], *device, *imagefile;
|
|
enum {
|
|
CMD_ERASE,
|
|
CMD_WRITE,
|
|
CMD_UNLOCK
|
|
} cmd;
|
|
|
|
erase[0] = NULL;
|
|
boot = 0;
|
|
force = 0;
|
|
buflen = 0;
|
|
quiet = 0;
|
|
|
|
while ((ch = getopt(argc, argv, "frqe:")) != -1)
|
|
switch (ch) {
|
|
case 'f':
|
|
force = 1;
|
|
break;
|
|
case 'r':
|
|
boot = 1;
|
|
break;
|
|
case 'q':
|
|
quiet++;
|
|
break;
|
|
case 'e':
|
|
i = 0;
|
|
while ((erase[i] != NULL) && ((i + 1) < MAX_ARGS))
|
|
i++;
|
|
|
|
erase[i++] = optarg;
|
|
erase[i] = NULL;
|
|
break;
|
|
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (argc < 2)
|
|
usage();
|
|
|
|
if ((strcmp(argv[0], "unlock") == 0) && (argc == 2)) {
|
|
cmd = CMD_UNLOCK;
|
|
device = argv[1];
|
|
} else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
|
|
cmd = CMD_ERASE;
|
|
device = argv[1];
|
|
} else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
|
|
cmd = CMD_WRITE;
|
|
device = argv[2];
|
|
|
|
if (strcmp(argv[1], "-") == 0) {
|
|
imagefile = "<stdin>";
|
|
imagefd = 0;
|
|
} else {
|
|
imagefile = argv[1];
|
|
if ((imagefd = open(argv[1], O_RDONLY)) < 0) {
|
|
fprintf(stderr, "Couldn't open image file: %s!\n", imagefile);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* check trx file before erasing or writing anything */
|
|
if (!image_check(imagefd, device)) {
|
|
if (!force) {
|
|
fprintf(stderr, "Image check failed.\n");
|
|
exit(1);
|
|
}
|
|
} else {
|
|
if (!mtd_check(device)) {
|
|
fprintf(stderr, "Can't open device for writing!\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
} else {
|
|
usage();
|
|
}
|
|
|
|
sync();
|
|
|
|
i = 0;
|
|
unlocked = 0;
|
|
while (erase[i] != NULL) {
|
|
if (quiet < 2)
|
|
fprintf(stderr, "Unlocking %s ...\n", erase[i]);
|
|
mtd_unlock(erase[i]);
|
|
if (quiet < 2)
|
|
fprintf(stderr, "Erasing %s ...\n", erase[i]);
|
|
mtd_erase(erase[i]);
|
|
if (strcmp(erase[i], device) == 0)
|
|
unlocked = 1;
|
|
i++;
|
|
}
|
|
|
|
if (!unlocked) {
|
|
if (quiet < 2)
|
|
fprintf(stderr, "Unlocking %s ...\n", device);
|
|
mtd_unlock(device);
|
|
}
|
|
|
|
switch (cmd) {
|
|
case CMD_UNLOCK:
|
|
break;
|
|
case CMD_ERASE:
|
|
if (quiet < 2)
|
|
fprintf(stderr, "Erasing %s ...\n", device);
|
|
mtd_erase(device);
|
|
break;
|
|
case CMD_WRITE:
|
|
if (quiet < 2)
|
|
fprintf(stderr, "Writing from %s to %s ... ", imagefile, device);
|
|
mtd_write(imagefd, device);
|
|
if (quiet < 2)
|
|
fprintf(stderr, "\n");
|
|
break;
|
|
}
|
|
|
|
sync();
|
|
|
|
if (boot) {
|
|
fflush(stdout);
|
|
syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL);
|
|
}
|
|
return 0;
|
|
}
|