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rewrite of command line parsing in mtd

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SVN-Revision: 536
This commit is contained in:
Felix Fietkau 2005-04-03 00:23:01 +00:00
parent f7b8c69ccf
commit 4bd5b26a90
1 changed files with 112 additions and 56 deletions
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168
openwrt/package/openwrt/mtd.c
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@ -1,7 +1,8 @@
/*
* mtd - simple memory technology device manipulation tool
*
* Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>
* 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
@ -17,12 +18,7 @@
* 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
*
* $Id$
*
*/
#include <limits.h>
@ -39,6 +35,7 @@
#include <sys/param.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/reboot.h>
#include <string.h>
#include <linux/mtd/mtd.h>
@ -49,6 +46,8 @@
#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 */
@ -59,10 +58,6 @@ struct trx_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);
extern int mtd_update(const char *trxfile, const char *mtd);
int
mtd_unlock(const char *mtd)
@ -83,12 +78,13 @@ 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);
@ -135,6 +131,7 @@ mtd_erase(const char *mtd)
exit(1);
}
printf("Erasing %s ...\n", mtd);
mtdEraseInfo.length = mtdInfo.erasesize;
for (mtdEraseInfo.start = 0;
@ -196,6 +193,8 @@ mtd_write(const char *trxfile, const char *mtd)
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;
@ -229,52 +228,109 @@ mtd_write(const char *trxfile, const char *mtd)
return 0;
}
int
mtd_update(const char *trxfile, const char *mtd)
void usage(void)
{
if (mtd_erase("rootfs") != 0) {
fprintf(stderr, "Could not erase rootfs\n");
exit(1);
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"
" -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"
" 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;
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)
switch (ch) {
case 'u':
unlock = 1;
break;
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 (mtd_write(trxfile, mtd) != 0) {
fprintf(stderr, "Could not update %s with %s\n", mtd, trxfile);
exit(1);
}
sync();
i = 0;
while (erase[i] != NULL) {
mtd_unlock(erase[i]);
mtd_erase(erase[i]);
i++;
}
if (unlock)
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);
break;
}
if (boot)
reboot(0);
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]);
}
if(argc == 3 && strcasecmp(argv[1],"erase")==0) {
printf("Erasing %s ...\n",argv[2]);
return mtd_erase(argv[2]);
}
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]);
}
if(argc == 4 && strcasecmp(argv[1],"update")==0) {
printf("Updating %s on %s ...\n",argv[2],argv[3]);
return mtd_update(argv[2],argv[3]);
}
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|update] imagefile device\n");
printf("\n.. where device is in the format of mtdX (eg: mtd4) or its label.\n\n");
printf("unlock enable modification to device\n");
printf("erase erase all data on device\n");
printf("write write imagefile to device\n");
printf("update remove rootfs and update imagefile on 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;
}