* mtd - simple memory technology device manipulation tool
*
* Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,
- * Felix Fietkau <nbd@vd-s.ath.cx>
+ * 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
*
* 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.
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id$
*
- * code is based on linux-mtd example code
+ * The code is based on the linux-mtd examples.
*/
#include <limits.h>
#include <linux/mtd/mtd.h>
#define TRX_MAGIC 0x30524448 /* "HDR0" */
-#define BUFSIZE (10 * 1024)
+#define BUFSIZE (16 * 1024)
#define MAX_ARGS 8
+#define DEBUG
+
struct trx_header {
uint32_t magic; /* "HDR0" */
uint32_t len; /* Length of file including header */
uint32_t offsets[3]; /* Offsets of partitions from start of header */
};
+char buf[BUFSIZE];
+int buflen;
+
int
-trx_check(const char *trxfile, const char *mtd, int force)
+trx_check(int imagefd, const char *mtd)
{
struct mtd_info_user mtdInfo;
- int trxfd, fd;
+ int fd;
size_t count;
- struct trx_header trx;
+ struct trx_header *trx = (struct trx_header *) buf;
struct stat trxstat;
- trxfd = open(trxfile,O_RDONLY);
- if(trxfd < 0) {
- fprintf(stderr, "Could not open image: %s\n", trxfile);
- exit(1);
- }
-
- if (fstat(trxfd,&trxstat) < 0) {
- fprintf(stderr, "Could not get image file status: %s\n", trxfile);
- close(trxfd);
- exit(1);
+ buflen = read(imagefd, buf, sizeof(struct trx_header));
+ if (buflen < sizeof(struct trx_header)) {
+ fprintf(stderr, "Could not get trx header, file too small (%ld bytes)\n", buflen);
+ return 0;
}
- if (force == 0) {
- count = read(trxfd, &trx, sizeof(struct trx_header));
- if (count < sizeof(struct trx_header)) {
- fprintf(stderr, "Could not get trx header, file too small (%ld bytes)\n", count);
- close(trxfd);
- exit(1);
- }
-
- if (trx.magic != TRX_MAGIC || trx.len < sizeof(struct trx_header)) {
- 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, use following command to convert to trx:\n"
- "dd if=firmware.bin of=firmware.trx bs=32 skip=1\n");
- close(trxfd);
- exit(1);
- }
-
- lseek(trxfd, 0, SEEK_SET);
+ if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
+ 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, use following command to convert to trx:\n"
+ "dd if=firmware.bin of=firmware.trx bs=32 skip=1\n");
+ return 0;
}
/* check if image fits to mtd device */
-
fd = mtd_open(mtd, O_RDWR);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
- close(fd);
exit(1);
}
- if(mtdInfo.size < trxstat.st_size) {
+ if(mtdInfo.size < trx->len) {
fprintf(stderr, "Image too big for partition: %s\n", mtd);
- close(trxfd);
close(fd);
- exit(1);
+ return 0;
}
- printf("Writing %s to %s ...\n", trxfile, mtd);
+ return 1;
+}
- close(fd);
+int mtd_check(char *mtd)
+{
+ struct mtd_info_user mtdInfo;
+ int fd;
+
+ fd = mtd_open(mtd, O_RDWR);
+ 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;
+ }
- return(trxfd);
+ close(fd);
+ return 1;
}
int
exit(1);
}
- printf("Unlocking %s ...\n", mtd);
+ fprintf(stderr, "Unlocking %s ...\n", mtd);
mtdLockInfo.start = 0;
mtdLockInfo.length = mtdInfo.size;
if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) {
exit(1);
}
- printf("Erasing %s ...\n", mtd);
+ fprintf(stderr, "Erasing %s ...\n", mtd);
mtdEraseInfo.length = mtdInfo.erasesize;
for (mtdEraseInfo.start = 0;
}
int
-mtd_write(int trxfd, const char *mtd)
+mtd_write(int imagefd, const char *mtd)
{
- int fd,i;
- size_t result,size,written;
+ int fd, i, result;
+ size_t r, w, e;
struct mtd_info_user mtdInfo;
struct erase_info_user mtdEraseInfo;
- unsigned char src[BUFSIZE],dest[BUFSIZE];
- struct stat trxstat;
-
- if (fstat(trxfd,&trxstat) < 0) {
- fprintf(stderr, "Could not get trx image file status\n");
- close(trxfd);
- exit(1);
- }
fd = mtd_open(mtd, O_RDWR);
if(fd < 0) {
exit(1);
}
- mtdEraseInfo.start = 0;
- mtdEraseInfo.length = trxstat.st_size & ~(mtdInfo.erasesize -1);
- if(trxstat.st_size % mtdInfo.erasesize) mtdEraseInfo.length += mtdInfo.erasesize;
-
- /* erase the chunk */
- if (ioctl (fd,MEMERASE,&mtdEraseInfo) < 0) {
- fprintf(stderr, "Erasing mtd failed: %s\n", mtd);
- exit(1);
- }
-
- size = trxstat.st_size;
- i = BUFSIZE;
- written = 0;
-
- while (size) {
- if (size < BUFSIZE) i = size;
- read(trxfd,src,i);
- result = write(fd,src,i);
- if (i != result) {
+ r = w = e = 0;
+ 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;
+
+ 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;
+ }
+
+ fprintf(stderr, "\b\b\b[w]");
+
+ if ((result = write(fd, buf, r)) < r) {
if (result < 0) {
- fprintf(stderr,"Error while writing image");
+ fprintf(stderr, "Error writing image.\n");
+ exit(1);
+ } else {
+ fprintf(stderr, "Insufficient space.\n");
exit(1);
}
- fprintf(stderr,"Error writing image");
- exit(1);
}
- written += i;
- size -= i;
+
+ buflen = 0;
}
+ fprintf(stderr, "\b\b\b\b");
return 0;
}
void usage(void)
{
-
printf("Usage: mtd [<options> ...] <command> [<arguments> ...] <device>\n\n"
+
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 to device\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"
- " -r reboot after successful command\n"
- " -f force write without trx checks\n"
- " -e <device> erase <device> before executing the command\n\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, trxfd, force;
- char *erase[MAX_ARGS], *device;
+ int ch, i, boot, unlock, imagefd, force;
+ char *erase[MAX_ARGS], *device, *imagefile;
enum {
CMD_ERASE,
CMD_WRITE,
erase[0] = NULL;
boot = 0;
force = 0;
+ buflen = 0;
while ((ch = getopt(argc, argv, "fre:")) != -1)
switch (ch) {
} else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
cmd = CMD_WRITE;
device = argv[2];
- /* check trx file before erasing or writing anything */
- trxfd = trx_check(argv[1], device, force);
+
+ 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);
+ }
+ }
+
+ if (system("grep Broadcom /proc/cpuinfo >&- >&-") != 0) {
+ /* check trx file before erasing or writing anything */
+ if (!trx_check(imagefd, device)) {
+ fprintf(stderr, "TRX check failed!\n");
+ if (!force)
+ exit(1);
+ }
+ } else {
+ if (!mtd_check(device)) {
+ fprintf(stderr, "Can't open device for writing!\n");
+ exit(1);
+ }
+ }
} else {
usage();
}
sync();
-
+
i = 0;
while (erase[i] != NULL) {
mtd_unlock(erase[i]);
mtd_erase(device);
break;
case CMD_WRITE:
- mtd_write(trxfd, device);
+ fprintf(stderr, "Writing from %s to %s ... ", imagefile, device);
+ mtd_write(imagefd, device);
+ fprintf(stderr, "\n");
break;
}
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