* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Id$
+ *
+ * code is based on linux-mtd example code
*/
#include <limits.h>
#include <linux/mtd/mtd.h>
-/* trx header */
#define TRX_MAGIC 0x30524448 /* "HDR0" */
-#define TRX_VERSION 1
-#define TRX_MAX_LEN 0x3A0000
-#define TRX_NO_HEADER 1 /* Do not write TRX header */
-
+#define BUFSIZE (10 * 1024)
#define MAX_ARGS 8
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 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 */
};
-#define BUFSIZE (10 * 1024)
+int
+trx_check(const char *trxfile, const char *mtd)
+{
+ struct mtd_info_user mtdInfo;
+ int trxfd, fd;
+ size_t count;
+ struct trx_header trx;
+ struct stat trxstat;
+
+ trxfd = open(trxfile,O_RDONLY);
+ if(trxfd < 0) {
+ fprintf(stderr, "Could not open trx image: %s\n", trxfile);
+ exit(1);
+ }
+
+ if (fstat(trxfd,&trxstat) < 0) {
+ fprintf(stderr, "Could not get trx image file status: %s\n", trxfile);
+ close(trxfd);
+ exit(1);
+ }
+
+ count = read(trxfd, &trx, sizeof(struct trx_header));
+ if (count < sizeof(struct trx_header)) {
+ fprintf(stderr, "Could not 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);
+
+ /* 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);
+ exit(1);
+ }
+
+ 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) {
+ fprintf(stderr, "Image too big for partition: %s\n", mtd);
+ close(trxfd);
+ close(fd);
+ exit(1);
+ }
+
+ printf("Writing %s to %s ...\n", trxfile, mtd);
+ close(fd);
+
+ return(trxfd);
+}
int
mtd_unlock(const char *mtd)
mtdLockInfo.start = 0;
mtdLockInfo.length = mtdInfo.size;
if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) {
- fprintf(stderr, "Could not unlock MTD device: %s\n", mtd);
close(fd);
return 0;
}
}
int
-mtd_write(const char *trxfile, const char *mtd)
+mtd_write(int trxfd, const char *mtd)
{
- int fd;
- int trxfd;
- int i;
+ int fd,i;
size_t result,size,written;
struct mtd_info_user mtdInfo;
struct erase_info_user mtdEraseInfo;
- struct stat trxstat;
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) {
close(fd);
exit(1);
}
-
- trxfd = open(trxfile,O_RDONLY);
- if(trxfd < 0) {
- fprintf(stderr, "Could not open trx image: %s\n", trxfile);
- exit(1);
- }
-
- if (fstat (trxfd,&trxstat) < 0) {
- fprintf(stderr, "Could not get trx image file status: %s\n", trxfile);
- close(trxfd);
- exit(1);
- }
- if(mtdInfo.size < trxstat.st_size) {
- fprintf(stderr, "Image too big for partition: %s\n", mtd);
- close(trxfd);
- exit(1);
- }
-
- printf("Writing %s to %s ...\n", trxfile, mtd);
-
mtdEraseInfo.start = 0;
mtdEraseInfo.length = trxstat.st_size & ~(mtdInfo.erasesize -1);
if(trxstat.st_size % mtdInfo.erasesize) mtdEraseInfo.length += mtdInfo.erasesize;
" erase erase all data on device\n"
" write <imagefile> write imagefile to device\n"
"Following options are available:\n"
- " -u unlock device before accessing it\n"
" -r reboot after successful command\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"
int main (int argc, char **argv)
{
- int ch, i, boot, unlock;
+ int ch, i, boot, unlock, trxfd;
char *erase[MAX_ARGS], *device;
enum {
CMD_ERASE,
erase[0] = NULL;
boot = 0;
- unlock = 0;
- printf("mtd: Modify data within a Memory Technology Device.\n"
- "Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,\n"
- " Felix Fietkau <nbd@vd-s.ath.cx>\n"
- "Documented by Mike Strates [dumpedcore] <mike@dilaudid.net>\n"
- "mtd has ABSOLUTELY NO WARRANTY and is licensed under the GNU GPL.\n\n");
-
- while ((ch = getopt(argc, argv, "ure:")) != -1)
+ while ((ch = getopt(argc, argv, "re:")) != -1)
switch (ch) {
- case 'u':
- unlock = 1;
- break;
case 'r':
boot = 1;
break;
} 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);
} else {
usage();
}
i++;
}
- if (unlock)
- mtd_unlock(device);
+ mtd_unlock(device);
switch (cmd) {
case CMD_UNLOCK:
- mtd_unlock(device);
break;
case CMD_ERASE:
mtd_erase(device);
break;
case CMD_WRITE:
- mtd_write(argv[1], device);
+ mtd_write(trxfd, device);
break;
}
if (boot)
- reboot(0);
+ kill(1, 15); // send SIGTERM to init for reboot
return 0;
}
projects / openwrt.git / blobdiff