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-rw-r--r--package/system/mtd/src/mtd.c761
1 files changed, 761 insertions, 0 deletions
diff --git a/package/system/mtd/src/mtd.c b/package/system/mtd/src/mtd.c
new file mode 100644
index 0000000..bdbaab5
--- /dev/null
+++ b/package/system/mtd/src/mtd.c
@@ -0,0 +1,761 @@
+/*
+ * mtd - simple memory technology device manipulation tool
+ *
+ * Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,
+ * Copyright (C) 2005-2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License v2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ *
+ * The code is based on the linux-mtd examples.
+ */
+
+#include <limits.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <sys/syscall.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <time.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/reboot.h>
+#include <linux/reboot.h>
+#include <mtd/mtd-user.h>
+#include "fis.h"
+#include "mtd.h"
+
+#ifndef MTDREFRESH
+#define MTDREFRESH _IO('M', 50)
+#endif
+
+#define MAX_ARGS 8
+#define JFFS2_DEFAULT_DIR "" /* directory name without /, empty means root dir */
+
+static char *buf = NULL;
+static char *imagefile = NULL;
+static char *jffs2file = NULL, *jffs2dir = JFFS2_DEFAULT_DIR;
+static int buflen = 0;
+int quiet;
+int no_erase;
+int mtdsize = 0;
+int erasesize = 0;
+
+int mtd_open(const char *mtd, bool block)
+{
+ FILE *fp;
+ char dev[PATH_MAX];
+ int i;
+ int ret;
+ int flags = O_RDWR | O_SYNC;
+
+ if ((fp = fopen("/proc/mtd", "r"))) {
+ while (fgets(dev, sizeof(dev), fp)) {
+ if (sscanf(dev, "mtd%d:", &i) && strstr(dev, mtd)) {
+ snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
+ if ((ret=open(dev, flags))<0) {
+ snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
+ ret=open(dev, flags);
+ }
+ fclose(fp);
+ return ret;
+ }
+ }
+ fclose(fp);
+ }
+
+ return open(mtd, flags);
+}
+
+int mtd_check_open(const char *mtd)
+{
+ struct mtd_info_user mtdInfo;
+ int fd;
+
+ fd = mtd_open(mtd, false);
+ if(fd < 0) {
+ fprintf(stderr, "Could not open mtd device: %s\n", mtd);
+ return -1;
+ }
+
+ if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
+ fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
+ close(fd);
+ return -1;
+ }
+ mtdsize = mtdInfo.size;
+ erasesize = mtdInfo.erasesize;
+
+ return fd;
+}
+
+int mtd_erase_block(int fd, int offset)
+{
+ struct erase_info_user mtdEraseInfo;
+
+ mtdEraseInfo.start = offset;
+ mtdEraseInfo.length = erasesize;
+ ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
+ if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0)
+ return -1;
+
+ return 0;
+}
+
+int mtd_write_buffer(int fd, const char *buf, int offset, int length)
+{
+ lseek(fd, offset, SEEK_SET);
+ write(fd, buf, length);
+ return 0;
+}
+
+
+static int
+image_check(int imagefd, const char *mtd)
+{
+ int ret = 1;
+ if (trx_check) {
+ ret = trx_check(imagefd, mtd, buf, &buflen);
+ }
+
+ return ret;
+}
+
+static int mtd_check(const char *mtd)
+{
+ char *next = NULL;
+ char *str = NULL;
+ int fd;
+
+ if (strchr(mtd, ':')) {
+ str = strdup(mtd);
+ mtd = str;
+ }
+
+ do {
+ next = strchr(mtd, ':');
+ if (next) {
+ *next = 0;
+ next++;
+ }
+
+ fd = mtd_check_open(mtd);
+ if (fd < 0)
+ return 0;
+
+ if (!buf)
+ buf = malloc(erasesize);
+
+ close(fd);
+ mtd = next;
+ } while (next);
+
+ if (str)
+ free(str);
+
+ return 1;
+}
+
+static int
+mtd_unlock(const char *mtd)
+{
+ struct erase_info_user mtdLockInfo;
+ char *next = NULL;
+ char *str = NULL;
+ int fd;
+
+ if (strchr(mtd, ':')) {
+ str = strdup(mtd);
+ mtd = str;
+ }
+
+ do {
+ next = strchr(mtd, ':');
+ if (next) {
+ *next = 0;
+ next++;
+ }
+
+ fd = mtd_check_open(mtd);
+ if(fd < 0) {
+ fprintf(stderr, "Could not open mtd device: %s\n", mtd);
+ exit(1);
+ }
+
+ if (quiet < 2)
+ fprintf(stderr, "Unlocking %s ...\n", mtd);
+
+ mtdLockInfo.start = 0;
+ mtdLockInfo.length = mtdsize;
+ ioctl(fd, MEMUNLOCK, &mtdLockInfo);
+ close(fd);
+ mtd = next;
+ } while (next);
+
+ if (str)
+ free(str);
+
+ return 0;
+}
+
+static int
+mtd_erase(const char *mtd)
+{
+ int fd;
+ struct erase_info_user mtdEraseInfo;
+
+ if (quiet < 2)
+ fprintf(stderr, "Erasing %s ...\n", mtd);
+
+ fd = mtd_check_open(mtd);
+ if(fd < 0) {
+ fprintf(stderr, "Could not open mtd device: %s\n", mtd);
+ exit(1);
+ }
+
+ mtdEraseInfo.length = erasesize;
+
+ for (mtdEraseInfo.start = 0;
+ mtdEraseInfo.start < mtdsize;
+ mtdEraseInfo.start += erasesize) {
+
+ ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
+ if(ioctl(fd, MEMERASE, &mtdEraseInfo))
+ fprintf(stderr, "Failed to erase block on %s at 0x%x\n", mtd, mtdEraseInfo.start);
+ }
+
+ close(fd);
+ return 0;
+
+}
+
+static int
+mtd_refresh(const char *mtd)
+{
+ int fd;
+
+ if (quiet < 2)
+ fprintf(stderr, "Refreshing mtd partition %s ... ", mtd);
+
+ fd = mtd_check_open(mtd);
+ if(fd < 0) {
+ fprintf(stderr, "Could not open mtd device: %s\n", mtd);
+ exit(1);
+ }
+
+ if (ioctl(fd, MTDREFRESH, NULL)) {
+ fprintf(stderr, "Failed to refresh the MTD device\n");
+ close(fd);
+ exit(1);
+ }
+ close(fd);
+
+ if (quiet < 2)
+ fprintf(stderr, "\n");
+
+ return 0;
+}
+
+static void
+indicate_writing(const char *mtd)
+{
+ if (quiet < 2)
+ fprintf(stderr, "\nWriting from %s to %s ... ", imagefile, mtd);
+
+ if (!quiet)
+ fprintf(stderr, " [ ]");
+}
+
+static int
+mtd_write(int imagefd, const char *mtd, char *fis_layout, size_t part_offset)
+{
+ char *next = NULL;
+ char *str = NULL;
+ int fd, result;
+ ssize_t r, w, e;
+ ssize_t skip = 0;
+ uint32_t offset = 0;
+ int jffs2_replaced = 0;
+
+#ifdef FIS_SUPPORT
+ static struct fis_part new_parts[MAX_ARGS];
+ static struct fis_part old_parts[MAX_ARGS];
+ int n_new = 0, n_old = 0;
+
+ if (fis_layout) {
+ const char *tmp = mtd;
+ char *word, *brkt;
+ int ret;
+
+ memset(&old_parts, 0, sizeof(old_parts));
+ memset(&new_parts, 0, sizeof(new_parts));
+
+ do {
+ next = strchr(tmp, ':');
+ if (!next)
+ next = (char *) tmp + strlen(tmp);
+
+ memcpy(old_parts[n_old].name, tmp, next - tmp);
+
+ n_old++;
+ tmp = next + 1;
+ } while(*next);
+
+ for (word = strtok_r(fis_layout, ",", &brkt);
+ word;
+ word = strtok_r(NULL, ",", &brkt)) {
+
+ tmp = strtok(word, ":");
+ strncpy((char *) new_parts[n_new].name, tmp, sizeof(new_parts[n_new].name) - 1);
+
+ tmp = strtok(NULL, ":");
+ if (!tmp)
+ goto next;
+
+ new_parts[n_new].size = strtoul(tmp, NULL, 0);
+
+ tmp = strtok(NULL, ":");
+ if (!tmp)
+ goto next;
+
+ new_parts[n_new].loadaddr = strtoul(tmp, NULL, 16);
+next:
+ n_new++;
+ }
+ ret = fis_validate(old_parts, n_old, new_parts, n_new);
+ if (ret < 0) {
+ fprintf(stderr, "Failed to validate the new FIS partition table\n");
+ exit(1);
+ }
+ if (ret == 0)
+ fis_layout = NULL;
+ }
+#endif
+
+ if (strchr(mtd, ':')) {
+ str = strdup(mtd);
+ mtd = str;
+ }
+
+ r = 0;
+
+resume:
+ next = strchr(mtd, ':');
+ if (next) {
+ *next = 0;
+ next++;
+ }
+
+ fd = mtd_check_open(mtd);
+ if(fd < 0) {
+ fprintf(stderr, "Could not open mtd device: %s\n", mtd);
+ exit(1);
+ }
+
+ if (part_offset > 0) {
+ fprintf(stderr, "Seeking on mtd device '%s' to: %u\n", mtd, part_offset);
+ lseek(fd, part_offset, SEEK_SET);
+ }
+
+ indicate_writing(mtd);
+
+ w = e = 0;
+ for (;;) {
+ /* buffer may contain data already (from trx check or last mtd partition write attempt) */
+ while (buflen < erasesize) {
+ r = read(imagefd, buf + buflen, erasesize - buflen);
+ if (r < 0) {
+ if ((errno == EINTR) || (errno == EAGAIN))
+ continue;
+ else {
+ perror("read");
+ break;
+ }
+ }
+
+ if (r == 0)
+ break;
+
+ buflen += r;
+ }
+
+ if (buflen == 0)
+ break;
+
+ if (skip > 0) {
+ skip -= buflen;
+ buflen = 0;
+ if (skip <= 0)
+ indicate_writing(mtd);
+
+ continue;
+ }
+
+ if (jffs2file) {
+ if (memcmp(buf, JFFS2_EOF, sizeof(JFFS2_EOF) - 1) == 0) {
+ if (!quiet)
+ fprintf(stderr, "\b\b\b ");
+ if (quiet < 2)
+ fprintf(stderr, "\nAppending jffs2 data from %s to %s...", jffs2file, mtd);
+ /* got an EOF marker - this is the place to add some jffs2 data */
+ skip = mtd_replace_jffs2(mtd, fd, e, jffs2file);
+ jffs2_replaced = 1;
+
+ /* don't add it again */
+ jffs2file = NULL;
+
+ w += skip;
+ e += skip;
+ skip -= buflen;
+ buflen = 0;
+ offset = 0;
+ continue;
+ }
+ /* no EOF marker, make sure we figure out the last inode number
+ * before appending some data */
+ mtd_parse_jffs2data(buf, jffs2dir);
+ }
+
+ /* need to erase the next block before writing data to it */
+ if(!no_erase)
+ {
+ while (w + buflen > e) {
+ if (!quiet)
+ fprintf(stderr, "\b\b\b[e]");
+
+
+ if (mtd_erase_block(fd, e) < 0) {
+ if (next) {
+ if (w < e) {
+ write(fd, buf + offset, e - w);
+ offset = e - w;
+ }
+ w = 0;
+ e = 0;
+ close(fd);
+ mtd = next;
+ fprintf(stderr, "\b\b\b \n");
+ goto resume;
+ } else {
+ fprintf(stderr, "Failed to erase block\n");
+ exit(1);
+ }
+ }
+
+ /* erase the chunk */
+ e += erasesize;
+ }
+ }
+
+ if (!quiet)
+ fprintf(stderr, "\b\b\b[w]");
+
+ if ((result = write(fd, buf + offset, buflen)) < buflen) {
+ if (result < 0) {
+ fprintf(stderr, "Error writing image.\n");
+ exit(1);
+ } else {
+ fprintf(stderr, "Insufficient space.\n");
+ exit(1);
+ }
+ }
+ w += buflen;
+
+ buflen = 0;
+ offset = 0;
+ }
+
+ if (jffs2_replaced && trx_fixup) {
+ trx_fixup(fd, mtd);
+ }
+
+ if (!quiet)
+ fprintf(stderr, "\b\b\b\b ");
+
+done:
+ if (quiet < 2)
+ fprintf(stderr, "\n");
+
+#ifdef FIS_SUPPORT
+ if (fis_layout) {
+ if (fis_remap(old_parts, n_old, new_parts, n_new) < 0)
+ fprintf(stderr, "Failed to update the FIS partition table\n");
+ }
+#endif
+
+ close(fd);
+ return 0;
+}
+
+static void usage(void)
+{
+ fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <device>[:<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"
+ " refresh refresh mtd partition\n"
+ " erase erase all data on device\n"
+ " write <imagefile>|- write <imagefile> (use - for stdin) to device\n"
+ " jffs2write <file> append <file> to the jffs2 partition on the device\n");
+ if (mtd_fixtrx) {
+ fprintf(stderr,
+ " fixtrx fix the checksum in a trx header on first boot\n");
+ }
+ if (mtd_fixseama) {
+ fprintf(stderr,
+ " fixseama fix the checksum in a seama header on first boot\n");
+ }
+ fprintf(stderr,
+ "Following options are available:\n"
+ " -q quiet mode (once: no [w] on writing,\n"
+ " twice: no status messages)\n"
+ " -n write without first erasing the blocks\n"
+ " -r reboot after successful command\n"
+ " -f force write without trx checks\n"
+ " -e <device> erase <device> before executing the command\n"
+ " -d <name> directory for jffs2write, defaults to \"tmp\"\n"
+ " -j <name> integrate <file> into jffs2 data when writing an image\n"
+ " -p write beginning at partition offset\n");
+ if (mtd_fixtrx) {
+ fprintf(stderr,
+ " -o offset offset of the image header in the partition(for fixtrx)\n");
+ }
+ fprintf(stderr,
+#ifdef FIS_SUPPORT
+ " -F <part>[:<size>[:<entrypoint>]][,<part>...]\n"
+ " alter the fis partition table to create new partitions replacing\n"
+ " the partitions provided as argument to the write command\n"
+ " (only valid together with the write command)\n"
+#endif
+ "\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);
+}
+
+static void do_reboot(void)
+{
+ fprintf(stderr, "Rebooting ...\n");
+ fflush(stderr);
+
+ /* try regular reboot method first */
+ system("/sbin/reboot");
+ sleep(2);
+
+ /* if we're still alive at this point, force the kernel to reboot */
+ syscall(SYS_reboot,LINUX_REBOOT_MAGIC1,LINUX_REBOOT_MAGIC2,LINUX_REBOOT_CMD_RESTART,NULL);
+}
+
+int main (int argc, char **argv)
+{
+ int ch, i, boot, imagefd = 0, force, unlocked;
+ char *erase[MAX_ARGS], *device = NULL;
+ char *fis_layout = NULL;
+ size_t offset = 0, part_offset = 0;
+ enum {
+ CMD_ERASE,
+ CMD_WRITE,
+ CMD_UNLOCK,
+ CMD_REFRESH,
+ CMD_JFFS2WRITE,
+ CMD_FIXTRX,
+ CMD_FIXSEAMA,
+ } cmd = -1;
+
+ erase[0] = NULL;
+ boot = 0;
+ force = 0;
+ buflen = 0;
+ quiet = 0;
+ no_erase = 0;
+
+ while ((ch = getopt(argc, argv,
+#ifdef FIS_SUPPORT
+ "F:"
+#endif
+ "frnqe:d:j:p:o:")) != -1)
+ switch (ch) {
+ case 'f':
+ force = 1;
+ break;
+ case 'r':
+ boot = 1;
+ break;
+ case 'n':
+ no_erase = 1;
+ break;
+ case 'j':
+ jffs2file = optarg;
+ break;
+ case 'q':
+ quiet++;
+ break;
+ case 'e':
+ i = 0;
+ while ((erase[i] != NULL) && ((i + 1) < MAX_ARGS))
+ i++;
+
+ erase[i++] = optarg;
+ erase[i] = NULL;
+ break;
+ case 'd':
+ jffs2dir = optarg;
+ break;
+ case 'p':
+ errno = 0;
+ part_offset = strtoul(optarg, 0, 0);
+ if (errno) {
+ fprintf(stderr, "-p: illegal numeric string\n");
+ usage();
+ }
+ break;
+ case 'o':
+ if (!mtd_fixtrx) {
+ fprintf(stderr, "-o: is not available on this platform\n");
+ usage();
+ }
+ errno = 0;
+ offset = strtoul(optarg, 0, 0);
+ if (errno) {
+ fprintf(stderr, "-o: illegal numeric string\n");
+ usage();
+ }
+ break;
+#ifdef FIS_SUPPORT
+ case 'F':
+ fis_layout = optarg;
+ break;
+#endif
+ 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], "refresh") == 0) && (argc == 2)) {
+ cmd = CMD_REFRESH;
+ device = argv[1];
+ } else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
+ cmd = CMD_ERASE;
+ device = argv[1];
+ } else if (((strcmp(argv[0], "fixtrx") == 0) && (argc == 2)) && mtd_fixtrx) {
+ cmd = CMD_FIXTRX;
+ device = argv[1];
+ } else if (((strcmp(argv[0], "fixseama") == 0) && (argc == 2)) && mtd_fixseama) {
+ cmd = CMD_FIXSEAMA;
+ device = argv[1];
+ } else if ((strcmp(argv[0], "write") == 0) && (argc == 3)) {
+ cmd = CMD_WRITE;
+ device = argv[2];
+
+ if (strcmp(argv[1], "-") == 0) {
+ imagefile = "<stdin>";
+ imagefd = 0;
+ } else {
+ imagefile = argv[1];
+ if ((imagefd = open(argv[1], O_RDONLY)) < 0) {
+ fprintf(stderr, "Couldn't open image file: %s!\n", imagefile);
+ exit(1);
+ }
+ }
+
+ if (!mtd_check(device)) {
+ fprintf(stderr, "Can't open device for writing!\n");
+ exit(1);
+ }
+ /* check trx file before erasing or writing anything */
+ if (!image_check(imagefd, device) && !force) {
+ fprintf(stderr, "Image check failed.\n");
+ exit(1);
+ }
+ } else if ((strcmp(argv[0], "jffs2write") == 0) && (argc == 3)) {
+ cmd = CMD_JFFS2WRITE;
+ device = argv[2];
+
+ imagefile = argv[1];
+ if (!mtd_check(device)) {
+ fprintf(stderr, "Can't open device for writing!\n");
+ exit(1);
+ }
+ } else {
+ usage();
+ }
+
+ sync();
+
+ i = 0;
+ unlocked = 0;
+ while (erase[i] != NULL) {
+ mtd_unlock(erase[i]);
+ mtd_erase(erase[i]);
+ if (strcmp(erase[i], device) == 0)
+ unlocked = 1;
+ i++;
+ }
+
+ switch (cmd) {
+ case CMD_UNLOCK:
+ if (!unlocked)
+ mtd_unlock(device);
+ break;
+ case CMD_ERASE:
+ if (!unlocked)
+ mtd_unlock(device);
+ mtd_erase(device);
+ break;
+ case CMD_WRITE:
+ if (!unlocked)
+ mtd_unlock(device);
+ mtd_write(imagefd, device, fis_layout, part_offset);
+ break;
+ case CMD_JFFS2WRITE:
+ if (!unlocked)
+ mtd_unlock(device);
+ mtd_write_jffs2(device, imagefile, jffs2dir);
+ break;
+ case CMD_REFRESH:
+ mtd_refresh(device);
+ break;
+ case CMD_FIXTRX:
+ if (mtd_fixtrx) {
+ mtd_fixtrx(device, offset);
+ }
+ case CMD_FIXSEAMA:
+ if (mtd_fixseama)
+ mtd_fixseama(device, 0);
+ break;
+ }
+
+ sync();
+
+ if (boot)
+ do_reboot();
+
+ return 0;
+}
generated by cgit v1.1 at 2024-11-16 20:16:54 +0000