/*
- * mtd.c
+ * mtd - simple memory technology device manipulation tool
*
- * Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>
- *
- * $Id$
+ * 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>
#define TRX_MAX_LEN 0x3A0000
#define TRX_NO_HEADER 1 /* Do not write TRX header */
+#define MAX_ARGS 8
+
struct trx_header {
uint32_t magic; /* "HDR0" */
uint32_t len; /* Length of file including header */
#define BUFSIZE (10 * 1024)
-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);
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;
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;
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;
+ 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];
+ } 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(argv[1], device);
+ break;
}
- printf("no valid command given\n");
- printf("\nmtd: modify data within a Memory Technology Device.\n");
- printf("Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>\n");
- printf("Documented by Mike Strates [dumpedcore] <mike@dilaudid.net>\n");
- printf("mtd has ABSOLUTELY NO WARRANTY and is licensed under the GNU GPL.\n");
- printf("\nUsage: mtd [unlock|erase] device\n");
- printf(" mtd write imagefile device\n");
- printf("\n .. where device is in the format of mtdX (eg: mtd4) or its label.\n");
- printf("\nunlock enable modification to device\n");
- printf("erase erase all data on device\n");
- printf("write write imagefile to device\n");
- printf("\nExample: To write linux.trx to mtd4 labeled as linux\n");
- printf("\n mtd unlock linux && mtd write linux.trx linux\n\n");
- return -1;
-}
+ if (boot)
+ kill(1, 15); // send SIGTERM to init for reboot
+ return 0;
+}
projects / openwrt.git / blobdiff