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add mtd cleanup, fix #17
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2419 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -2,7 +2,7 @@
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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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* Felix Fietkau <nbd@vd-s.ath.cx>
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* Felix Fietkau <nbd@openwrt.org>
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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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@ -16,11 +16,11 @@
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*
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* You should have received a copy of the GNU General Public License
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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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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Id$
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*
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* code is based on linux-mtd example code
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* The code is based on the linux-mtd examples.
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*/
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#include <limits.h>
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@ -43,9 +43,11 @@
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#include <linux/mtd/mtd.h>
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#define TRX_MAGIC 0x30524448 /* "HDR0" */
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#define BUFSIZE (10 * 1024)
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#define BUFSIZE (16 * 1024)
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#define MAX_ARGS 8
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#define DEBUG
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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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@ -54,49 +56,33 @@ struct trx_header {
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uint32_t offsets[3]; /* Offsets of partitions from start of header */
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};
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char buf[BUFSIZE];
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int buflen;
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int
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trx_check(const char *trxfile, const char *mtd, int force)
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trx_check(int imagefd, const char *mtd)
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{
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struct mtd_info_user mtdInfo;
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int trxfd, fd;
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int fd;
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size_t count;
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struct trx_header trx;
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struct trx_header *trx = (struct trx_header *) buf;
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struct stat trxstat;
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trxfd = open(trxfile,O_RDONLY);
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if(trxfd < 0) {
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fprintf(stderr, "Could not open image: %s\n", trxfile);
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exit(1);
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buflen = read(imagefd, buf, sizeof(struct trx_header));
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if (buflen < sizeof(struct trx_header)) {
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fprintf(stderr, "Could not get trx header, file too small (%ld bytes)\n", buflen);
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return 0;
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}
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if (fstat(trxfd,&trxstat) < 0) {
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fprintf(stderr, "Could not get image file status: %s\n", trxfile);
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close(trxfd);
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exit(1);
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}
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if (force == 0) {
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count = read(trxfd, &trx, sizeof(struct trx_header));
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if (count < sizeof(struct trx_header)) {
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fprintf(stderr, "Could not get trx header, file too small (%ld bytes)\n", count);
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close(trxfd);
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exit(1);
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}
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if (trx.magic != TRX_MAGIC || trx.len < sizeof(struct trx_header)) {
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fprintf(stderr, "Bad trx header\n");
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fprintf(stderr, "If this is a firmware in bin format, like some of the\n"
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"original firmware files are, use following command to convert to trx:\n"
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"dd if=firmware.bin of=firmware.trx bs=32 skip=1\n");
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close(trxfd);
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exit(1);
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}
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lseek(trxfd, 0, SEEK_SET);
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if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
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fprintf(stderr, "Bad trx header\n");
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fprintf(stderr, "If this is a firmware in bin format, like some of the\n"
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"original firmware files are, use following command to convert to trx:\n"
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"dd if=firmware.bin of=firmware.trx bs=32 skip=1\n");
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return 0;
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}
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/* check if image fits to mtd device */
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fd = mtd_open(mtd, O_RDWR);
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if(fd < 0) {
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fprintf(stderr, "Could not open mtd device: %s\n", mtd);
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@ -105,22 +91,37 @@ trx_check(const char *trxfile, const char *mtd, int force)
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if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
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fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
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close(fd);
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exit(1);
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}
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if(mtdInfo.size < trxstat.st_size) {
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if(mtdInfo.size < trx->len) {
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fprintf(stderr, "Image too big for partition: %s\n", mtd);
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close(trxfd);
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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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printf("Writing %s to %s ...\n", trxfile, mtd);
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return 1;
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}
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int mtd_check(char *mtd)
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{
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struct mtd_info_user mtdInfo;
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int fd;
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fd = mtd_open(mtd, O_RDWR);
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if(fd < 0) {
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fprintf(stderr, "Could not open mtd device: %s\n", mtd);
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return 0;
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}
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if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
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fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
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close(fd);
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return 0;
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}
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close(fd);
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return(trxfd);
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return 1;
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}
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int
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@ -142,7 +143,7 @@ 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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fprintf(stderr, "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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@ -194,7 +195,7 @@ 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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fprintf(stderr, "Erasing %s ...\n", mtd);
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mtdEraseInfo.length = mtdInfo.erasesize;
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for (mtdEraseInfo.start = 0;
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@ -215,20 +216,12 @@ mtd_erase(const char *mtd)
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}
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int
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mtd_write(int trxfd, const char *mtd)
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mtd_write(int imagefd, const char *mtd)
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{
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int fd,i;
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size_t result,size,written;
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int fd, i, result;
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size_t r, w, e;
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struct mtd_info_user mtdInfo;
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struct erase_info_user mtdEraseInfo;
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unsigned char src[BUFSIZE],dest[BUFSIZE];
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struct stat trxstat;
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if (fstat(trxfd,&trxstat) < 0) {
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fprintf(stderr, "Could not get trx image file status\n");
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close(trxfd);
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exit(1);
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}
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fd = mtd_open(mtd, O_RDWR);
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if(fd < 0) {
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@ -242,51 +235,63 @@ mtd_write(int trxfd, const char *mtd)
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exit(1);
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}
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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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r = w = e = 0;
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fprintf(stderr, " [ ]");
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/* erase the chunk */
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if (ioctl (fd,MEMERASE,&mtdEraseInfo) < 0) {
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fprintf(stderr, "Erasing mtd failed: %s\n", mtd);
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exit(1);
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}
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size = trxstat.st_size;
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i = BUFSIZE;
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written = 0;
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for (;;) {
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/* buffer may contain data already (from trx check) */
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r = buflen;
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r += read(imagefd, buf + buflen, BUFSIZE - buflen);
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w += r;
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while (size) {
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if (size < BUFSIZE) i = size;
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read(trxfd,src,i);
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result = write(fd,src,i);
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if (i != result) {
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if (result < 0) {
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fprintf(stderr,"Error while writing image");
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/* EOF */
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if (r <= 0) break;
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/* need to erase the next block before writing data to it */
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while (w > e) {
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mtdEraseInfo.start = e;
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mtdEraseInfo.length = mtdInfo.erasesize;
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fprintf(stderr, "\b\b\b[e]");
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/* erase the chunk */
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if (ioctl (fd,MEMERASE,&mtdEraseInfo) < 0) {
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fprintf(stderr, "Erasing mtd failed: %s\n", mtd);
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exit(1);
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}
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fprintf(stderr,"Error writing image");
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exit(1);
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e += mtdInfo.erasesize;
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}
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written += i;
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size -= i;
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fprintf(stderr, "\b\b\b[w]");
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if ((result = write(fd, buf, r)) < r) {
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if (result < 0) {
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fprintf(stderr, "Error writing image.\n");
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exit(1);
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} else {
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fprintf(stderr, "Insufficient space.\n");
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exit(1);
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}
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}
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buflen = 0;
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}
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fprintf(stderr, "\b\b\b\b");
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return 0;
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}
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void usage(void)
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{
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printf("Usage: mtd [<options> ...] <command> [<arguments> ...] <device>\n\n"
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fprintf(stderr, "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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" unlock unlock the device\n"
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" erase erase all data on device\n"
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" write <imagefile>|- write <imagefile> (use - for stdin) to device\n"
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"Following options are available:\n"
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" -r reboot after successful command\n"
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" -f force write without trx checks\n"
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" -e <device> erase <device> before executing the command\n\n"
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" -r reboot after successful command\n"
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" -f force write without trx checks\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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@ -294,8 +299,8 @@ void usage(void)
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int main (int argc, char **argv)
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{
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int ch, i, boot, unlock, trxfd, force;
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char *erase[MAX_ARGS], *device;
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int ch, i, boot, unlock, imagefd, force;
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char *erase[MAX_ARGS], *device, *imagefile;
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enum {
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CMD_ERASE,
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CMD_WRITE,
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@ -305,6 +310,7 @@ int main (int argc, char **argv)
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erase[0] = NULL;
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boot = 0;
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force = 0;
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buflen = 0;
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while ((ch = getopt(argc, argv, "fre:")) != -1)
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switch (ch) {
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@ -342,14 +348,37 @@ int main (int argc, char **argv)
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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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/* check trx file before erasing or writing anything */
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trxfd = trx_check(argv[1], device, force);
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if (strcmp(argv[1], "-") == 0) {
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imagefile = "<stdin>";
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imagefd = 0;
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} else {
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imagefile = argv[1];
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if ((imagefd = open(argv[1], O_RDONLY)) < 0) {
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fprintf(stderr, "Couldn't open image file: %s!\n", imagefile);
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exit(1);
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}
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}
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if (system("grep Broadcom /proc/cpuinfo >&- >&-") != 0) {
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/* check trx file before erasing or writing anything */
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if (!trx_check(imagefd, device)) {
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fprintf(stderr, "TRX check failed!\n");
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if (!force)
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exit(1);
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}
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} else {
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if (!mtd_check(device)) {
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fprintf(stderr, "Can't open device for writing!\n");
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exit(1);
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}
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}
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} else {
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usage();
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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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@ -366,7 +395,9 @@ int main (int argc, char **argv)
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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(trxfd, device);
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fprintf(stderr, "Writing from %s to %s ... ", imagefile, device);
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mtd_write(imagefd, device);
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fprintf(stderr, "\n");
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break;
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}
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