parent
03fd14e9d9
commit
463acfb39c
@ -0,0 +1,6 @@ |
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config BR2_PACKAGE_MTD |
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tristate "mtd - update utility for trx firmware images" |
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default y |
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help |
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update utility for trx firmware images. |
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@ -0,0 +1,26 @@ |
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# $Id$
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include $(TOPDIR)/rules.mk |
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PKG_NAME := mtd
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PKG_RELEASE := 1
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PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
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include $(TOPDIR)/package/rules.mk |
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$(eval $(call PKG_template,MTD,$(PKG_NAME),$(PKG_RELEASE),$(ARCH))) |
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$(PKG_BUILD_DIR)/.prepared: |
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mkdir -p $@
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touch $@
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$(PKG_BUILD_DIR)/.built: |
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$(TARGET_CC) $(TARGET_CFLAGS) -o $(PKG_BUILD_DIR)/mtd mtd.c
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touch $@
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$(IPKG_MTD): |
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install -d -m0755 $(IDIR_MTD)/sbin
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install -m0755 $(PKG_BUILD_DIR)/mtd $(IDIR_MTD)/sbin
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$(RSTRIP) $(_IPK_DIR)/sbin/*
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$(IPKG_BUILD) $(IDIR_MTD) $(PACKAGE_DIR)
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@ -0,0 +1,6 @@ |
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Package: mtd |
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Priority: optional |
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Section: sys |
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Maintainer: Felix Fietkau <nbd@vd-s.ath.cx> |
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Source: buildroot internal |
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Description: Tool for modifying the flash chip |
@ -0,0 +1,370 @@ |
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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@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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* 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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* code is based on linux-mtd example code |
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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 (10 * 1024) |
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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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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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int |
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trx_check(const char *trxfile, 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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size_t count; |
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struct trx_header trx; |
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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 trx image: %s\n", trxfile); |
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exit(1); |
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} |
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if (fstat(trxfd,&trxstat) < 0) { |
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fprintf(stderr, "Could not get trx 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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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 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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/* 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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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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if(mtdInfo.size < trxstat.st_size) { |
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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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}
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printf("Writing %s to %s ...\n", trxfile, mtd); |
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close(fd); |
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return(trxfd); |
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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); |
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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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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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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); |
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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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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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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 trxfd, 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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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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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.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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/* 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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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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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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} |
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written += i; |
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size -= i; |
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} |
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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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"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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" -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, trxfd; |
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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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while ((ch = getopt(argc, argv, "re:")) != -1) |
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switch (ch) { |
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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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/* check trx file before erasing or writing anything */ |
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trxfd = trx_check(argv[1], device); |
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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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mtd_erase(erase[i]); |
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i++; |
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} |
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mtd_unlock(device); |
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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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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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break; |
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} |
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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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