/*
- * mtd.c
+ * mtd - simple memory technology device manipulation tool
*
- * Copyright (C) 2005 Waldemar Brodkorb
- *
- * $Id$
+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,
+ * Felix Fietkau <nbd@vd-s.ath.cx>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms 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.
*
- * mtd utility for the openwrt project
- * it is mainly code from the linux-mtd project, which accepts the same
- * command line arguments as the broadcom utility
- *
+ * $Id$
+ *
+ * code is based on linux-mtd example code
*/
#include <limits.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/stat.h>
+#include <sys/reboot.h>
#include <string.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);
+ }
-extern int mtd_open(const char *mtd, int flags);
-extern int mtd_erase(const char *mtd);
-extern int mtd_write(const char *trxfile, const char *mtd);
+ 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)
exit(1);
}
+ printf("Unlocking %s ...\n", 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);
- exit(1);
+ return 0;
}
close(fd);
exit(1);
}
+ printf("Erasing %s ...\n", mtd);
mtdEraseInfo.length = mtdInfo.erasesize;
for (mtdEraseInfo.start = 0;
mtdEraseInfo.start < mtdInfo.size;
mtdEraseInfo.start += mtdInfo.erasesize) {
- if(ioctl(fd, MEMUNLOCK, &mtdEraseInfo)) {
- fprintf(stderr, "Could not unlock MTD device: %s\n", mtd);
- close(fd);
- exit(1);
- }
+ ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
if(ioctl(fd, MEMERASE, &mtdEraseInfo)) {
fprintf(stderr, "Could not erase MTD device: %s\n", mtd);
close(fd);
}
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 to big for mtd partition: %s\n", mtd);
- close(trxfd);
- 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);
+ fprintf(stderr, "Erasing mtd failed: %s\n", mtd);
exit(1);
}
result = write(fd,src,i);
if (i != result) {
if (result < 0) {
- fprintf(stderr,"error while writing image");
+ fprintf(stderr,"Error while writing image");
exit(1);
}
- fprintf(stderr,"error writing image");
+ fprintf(stderr,"Error writing image");
exit(1);
}
written += i;
return 0;
}
-int main(int argc, char **argv) {
- if(argc == 3 && strcasecmp(argv[1],"unlock")==0) {
- printf("Unlocking %s\n",argv[2]);
- return mtd_unlock(argv[2]);
+void usage(void)
+{
+ printf("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"
+ "Following options are available:\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"
+ " mtd -r write linux.trx linux\n\n");
+ exit(1);
+}
+
+int main (int argc, char **argv)
+{
+ int ch, i, boot, unlock, trxfd;
+ char *erase[MAX_ARGS], *device;
+ enum {
+ CMD_ERASE,
+ CMD_WRITE,
+ CMD_UNLOCK
+ } cmd;
+
+ erase[0] = NULL;
+ boot = 0;
+
+ while ((ch = getopt(argc, argv, "re:")) != -1)
+ switch (ch) {
+ case 'r':
+ boot = 1;
+ 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];
+ /* check trx file before erasing or writing anything */
+ trxfd = trx_check(argv[1], device);
+ } else {
+ usage();
}
- if(argc == 3 && strcasecmp(argv[1],"erase")==0) {
- printf("Erasing %s\n",argv[2]);
- return mtd_erase(argv[2]);
+
+ sync();
+
+ i = 0;
+ while (erase[i] != NULL) {
+ mtd_unlock(erase[i]);
+ mtd_erase(erase[i]);
+ i++;
}
- if(argc == 4 && strcasecmp(argv[1],"write")==0) {
- printf("Writing %s to %s\n",argv[2],argv[3]);
- return mtd_write(argv[2],argv[3]);
+
+ mtd_unlock(device);
+
+ switch (cmd) {
+ case CMD_UNLOCK:
+ break;
+ case CMD_ERASE:
+ mtd_erase(device);
+ break;
+ case CMD_WRITE:
+ mtd_write(trxfd, device);
+ break;
}
- printf("no valid command given\n");
- return -1;
-}
+ if (boot)
+ kill(1, 15); // send SIGTERM to init for reboot
+ return 0;
+}
projects / openwrt.git / blobdiff