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git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-10 11:21:52 +02:00
rewrite of command line parsing in mtd
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@536 3c298f89-4303-0410-b956-a3cf2f4a3e73
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070af9ede8
@ -1,7 +1,8 @@
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/*
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* mtd - simple memory technology device manipulation tool
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*
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* Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>
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* Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,
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* Felix Fietkau <nbd@vd-s.ath.cx>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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@ -17,12 +18,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* mtd utility for the openwrt project
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* it is mainly code from the linux-mtd project, which accepts the same
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* command line arguments as the broadcom utility
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*
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* $Id$
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*
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*/
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#include <limits.h>
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@ -39,6 +35,7 @@
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/reboot.h>
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#include <string.h>
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#include <linux/mtd/mtd.h>
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@ -49,6 +46,8 @@
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#define TRX_MAX_LEN 0x3A0000
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#define TRX_NO_HEADER 1 /* Do not write TRX header */
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#define MAX_ARGS 8
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struct trx_header {
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uint32_t magic; /* "HDR0" */
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uint32_t len; /* Length of file including header */
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@ -59,10 +58,6 @@ struct trx_header {
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#define BUFSIZE (10 * 1024)
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extern int mtd_open(const char *mtd, int flags);
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extern int mtd_erase(const char *mtd);
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extern int mtd_write(const char *trxfile, const char *mtd);
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extern int mtd_update(const char *trxfile, const char *mtd);
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int
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mtd_unlock(const char *mtd)
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@ -83,12 +78,13 @@ mtd_unlock(const char *mtd)
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exit(1);
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}
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printf("Unlocking %s ...\n", mtd);
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mtdLockInfo.start = 0;
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mtdLockInfo.length = mtdInfo.size;
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if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) {
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fprintf(stderr, "Could not unlock MTD device: %s\n", mtd);
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close(fd);
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exit(1);
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return 0;
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}
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close(fd);
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@ -135,6 +131,7 @@ mtd_erase(const char *mtd)
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exit(1);
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}
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printf("Erasing %s ...\n", mtd);
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mtdEraseInfo.length = mtdInfo.erasesize;
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for (mtdEraseInfo.start = 0;
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@ -196,6 +193,8 @@ mtd_write(const char *trxfile, const char *mtd)
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exit(1);
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}
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printf("Writing %s to %s ...\n", trxfile, mtd);
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mtdEraseInfo.start = 0;
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mtdEraseInfo.length = trxstat.st_size & ~(mtdInfo.erasesize -1);
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if(trxstat.st_size % mtdInfo.erasesize) mtdEraseInfo.length += mtdInfo.erasesize;
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@ -229,52 +228,109 @@ mtd_write(const char *trxfile, const char *mtd)
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return 0;
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}
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int
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mtd_update(const char *trxfile, const char *mtd)
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void usage(void)
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{
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if (mtd_erase("rootfs") != 0) {
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fprintf(stderr, "Could not erase rootfs\n");
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exit(1);
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printf("Usage: mtd [<options> ...] <command> [<arguments> ...] <device>\n\n"
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"The device is in the format of mtdX (eg: mtd4) or its label.\n"
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"mtd recognizes these commands:\n"
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" unlock unlock the device\n"
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" erase erase all data on device\n"
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" write <imagefile> write imagefile to device\n"
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"Following options are available:\n"
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" -u unlock device before accessing it\n"
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" -r reboot after successful command\n"
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" -e <device> erase <device> before executing the command\n\n"
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"Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards\n"
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" mtd -r write linux.trx linux\n\n");
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exit(1);
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}
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int main (int argc, char **argv)
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{
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int ch, i, boot, unlock;
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char *erase[MAX_ARGS], *device;
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enum {
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CMD_ERASE,
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CMD_WRITE,
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CMD_UNLOCK
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} cmd;
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erase[0] = NULL;
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boot = 0;
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unlock = 0;
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printf("mtd: Modify data within a Memory Technology Device.\n"
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"Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,\n"
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" Felix Fietkau <nbd@vd-s.ath.cx>\n"
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"Documented by Mike Strates [dumpedcore] <mike@dilaudid.net>\n"
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"mtd has ABSOLUTELY NO WARRANTY and is licensed under the GNU GPL.\n\n");
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while ((ch = getopt(argc, argv, "ure:")) != -1)
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switch (ch) {
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case 'u':
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unlock = 1;
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break;
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case 'r':
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boot = 1;
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break;
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case 'e':
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i = 0;
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while ((erase[i] != NULL) && ((i + 1) < MAX_ARGS))
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i++;
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erase[i++] = optarg;
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erase[i] = NULL;
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break;
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case '?':
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default:
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usage();
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}
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argc -= optind;
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argv += optind;
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if (argc < 2)
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usage();
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if ((strcmp(argv[0], "unlock") == 0) && (argc == 2)) {
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cmd = CMD_UNLOCK;
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device = argv[1];
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} else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
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cmd = CMD_ERASE;
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device = argv[1];
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} else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
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cmd = CMD_WRITE;
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device = argv[2];
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} else {
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usage();
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}
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if (mtd_write(trxfile, mtd) != 0) {
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fprintf(stderr, "Could not update %s with %s\n", mtd, trxfile);
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exit(1);
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}
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sync();
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i = 0;
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while (erase[i] != NULL) {
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mtd_unlock(erase[i]);
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mtd_erase(erase[i]);
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i++;
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}
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if (unlock)
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mtd_unlock(device);
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switch (cmd) {
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case CMD_UNLOCK:
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mtd_unlock(device);
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break;
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case CMD_ERASE:
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mtd_erase(device);
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break;
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case CMD_WRITE:
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mtd_write(argv[1], device);
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break;
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}
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if (boot)
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reboot(0);
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return 0;
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}
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int main(int argc, char **argv) {
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if(argc == 3 && strcasecmp(argv[1],"unlock")==0) {
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printf("Unlocking %s ...\n",argv[2]);
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return mtd_unlock(argv[2]);
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}
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if(argc == 3 && strcasecmp(argv[1],"erase")==0) {
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printf("Erasing %s ...\n",argv[2]);
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return mtd_erase(argv[2]);
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}
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if(argc == 4 && strcasecmp(argv[1],"write")==0) {
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printf("Writing %s to %s ...\n",argv[2],argv[3]);
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return mtd_write(argv[2],argv[3]);
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}
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if(argc == 4 && strcasecmp(argv[1],"update")==0) {
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printf("Updating %s on %s ...\n",argv[2],argv[3]);
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return mtd_update(argv[2],argv[3]);
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}
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printf("no valid command given\n");
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printf("\nmtd: modify data within a Memory Technology Device.\n");
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printf("Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>\n");
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printf("Documented by Mike Strates [dumpedcore] <mike@dilaudid.net>\n");
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printf("mtd has ABSOLUTELY NO WARRANTY and is licensed under the GNU GPL.\n");
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printf("\nUsage: mtd [unlock|erase] device\n");
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printf(" mtd [write|update] imagefile device\n");
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printf("\n.. where device is in the format of mtdX (eg: mtd4) or its label.\n\n");
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printf("unlock enable modification to device\n");
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printf("erase erase all data on device\n");
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printf("write write imagefile to device\n");
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printf("update remove rootfs and update imagefile on device\n");
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printf("\nExample: To write linux.trx to mtd4 labeled as linux\n");
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printf("\n mtd unlock linux && mtd write linux.trx linux\n\n");
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return -1;
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}
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