finally move buildroot-ng to trunk
This commit is contained in:
Felix Fietkau
475
package/mtd/src/mtd.c
Normal file
475
package/mtd/src/mtd.c
Normal file
@@ -0,0 +1,475 @@
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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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* 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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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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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*
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* $Id$
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*
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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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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <error.h>
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#include <time.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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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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#define TRX_MAGIC 0x30524448 /* "HDR0" */
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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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#define SYSTYPE_UNKNOWN 0
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#define SYSTYPE_BROADCOM 1
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/* to be continued */
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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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uint32_t crc32; /* 32-bit CRC from flag_version to end of file */
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uint32_t flag_version; /* 0:15 flags, 16:31 version */
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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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image_check_bcom(int imagefd, const char *mtd)
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{
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struct trx_header *trx = (struct trx_header *) buf;
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struct mtd_info_user mtdInfo;
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int fd;
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buflen = read(imagefd, buf, 32);
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if (buflen < 32) {
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fprintf(stdout, "Could not get image header, file too small (%ld bytes)\n", buflen);
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return 0;
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}
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switch(trx->magic) {
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case 0x47343557: /* W54G */
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case 0x53343557: /* W54S */
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case 0x73343557: /* W54s */
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case 0x46343557: /* W54F */
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case 0x55343557: /* W54U */
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/* ignore the first 32 bytes */
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buflen = read(imagefd, buf, sizeof(struct trx_header));
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break;
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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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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 | O_SYNC);
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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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exit(1);
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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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exit(1);
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}
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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(fd);
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return 0;
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}
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close(fd);
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return 1;
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}
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int
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image_check(int imagefd, const char *mtd)
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{
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int fd, systype;
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size_t count;
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char *c;
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FILE *f;
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systype = SYSTYPE_UNKNOWN;
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f = fopen("/proc/cpuinfo", "r");
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while (!feof(f) && (fgets(buf, BUFSIZE - 1, f) != NULL)) {
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if ((strncmp(buf, "system type", 11) == 0) && (c = strchr(buf, ':'))) {
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c += 2;
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if (strncmp(c, "Broadcom BCM947XX", 17) == 0)
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systype = SYSTYPE_BROADCOM;
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}
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}
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fclose(f);
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switch(systype) {
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case SYSTYPE_BROADCOM:
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return image_check_bcom(imagefd, mtd);
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default:
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return 1;
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}
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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 | O_SYNC);
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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 1;
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}
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int
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mtd_unlock(const char *mtd)
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{
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int fd;
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struct mtd_info_user mtdInfo;
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struct erase_info_user mtdLockInfo;
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fd = mtd_open(mtd, O_RDWR | O_SYNC);
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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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exit(1);
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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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exit(1);
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}
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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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close(fd);
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return 0;
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}
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close(fd);
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return 0;
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}
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int
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mtd_open(const char *mtd, int flags)
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{
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FILE *fp;
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char dev[PATH_MAX];
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int i;
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if ((fp = fopen("/proc/mtd", "r"))) {
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while (fgets(dev, sizeof(dev), fp)) {
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if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) {
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snprintf(dev, sizeof(dev), "/dev/mtd/%d", i);
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fclose(fp);
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return open(dev, flags);
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}
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}
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fclose(fp);
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}
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return open(mtd, flags);
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}
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int
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mtd_erase(const char *mtd)
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{
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int fd;
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struct mtd_info_user mtdInfo;
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struct erase_info_user mtdEraseInfo;
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fd = mtd_open(mtd, O_RDWR | O_SYNC);
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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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exit(1);
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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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exit(1);
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}
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mtdEraseInfo.length = mtdInfo.erasesize;
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for (mtdEraseInfo.start = 0;
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mtdEraseInfo.start < mtdInfo.size;
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mtdEraseInfo.start += mtdInfo.erasesize) {
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ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
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if(ioctl(fd, MEMERASE, &mtdEraseInfo)) {
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fprintf(stderr, "Could not erase MTD device: %s\n", mtd);
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close(fd);
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exit(1);
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}
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}
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close(fd);
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return 0;
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}
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int
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mtd_write(int imagefd, const char *mtd, int quiet)
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{
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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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int ret = 0;
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fd = mtd_open(mtd, O_RDWR | O_SYNC);
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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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exit(1);
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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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exit(1);
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}
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r = w = e = 0;
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if (!quiet)
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fprintf(stderr, " [ ]");
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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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/* 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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if (!quiet)
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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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e += mtdInfo.erasesize;
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}
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if (!quiet)
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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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if (!quiet)
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fprintf(stderr, "\b\b\b\b");
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close(fd);
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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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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> (use - for stdin) to device\n"
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"Following options are available:\n"
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" -q quiet mode (once: no [w] on writing,\n"
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" twice: no status messages)\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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}
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int main (int argc, char **argv)
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{
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int ch, i, boot, unlock, imagefd, force, quiet, unlocked;
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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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CMD_UNLOCK
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} cmd;
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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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quiet = 0;
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while ((ch = getopt(argc, argv, "frqe:")) != -1)
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switch (ch) {
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case 'f':
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force = 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 'q':
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quiet++;
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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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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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/* check trx file before erasing or writing anything */
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if (!image_check(imagefd, device)) {
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if ((quiet < 2) || !force)
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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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} 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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unlocked = 0;
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while (erase[i] != NULL) {
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if (quiet < 2)
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fprintf(stderr, "Unlocking %s ...\n", erase[i]);
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mtd_unlock(erase[i]);
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if (quiet < 2)
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fprintf(stderr, "Erasing %s ...\n", erase[i]);
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mtd_erase(erase[i]);
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if (strcmp(erase[i], device) == 0)
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unlocked = 1;
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i++;
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}
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if (!unlocked) {
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if (quiet < 2)
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fprintf(stderr, "Unlocking %s ...\n", device);
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mtd_unlock(device);
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}
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switch (cmd) {
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case CMD_UNLOCK:
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break;
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case CMD_ERASE:
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if (quiet < 2)
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fprintf(stderr, "Erasing %s ...\n", device);
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mtd_erase(device);
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break;
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case CMD_WRITE:
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if (quiet < 2)
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fprintf(stderr, "Writing from %s to %s ... ", imagefile, device);
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mtd_write(imagefd, device, quiet);
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if (quiet < 2)
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fprintf(stderr, "\n");
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break;
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}
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sync();
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if (boot)
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kill(1, 15); // send SIGTERM to init for reboot
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return 0;
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}
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