/*
* mtd - simple memory technology device manipulation tool
*
- * Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,
- * Felix Fietkau <nbd@openwrt.org>
+ * 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
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * 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
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
- * $Id$
*
* The code is based on the linux-mtd examples.
*/
#include <sys/reboot.h>
#include <linux/reboot.h>
#include "mtd-api.h"
+#include "fis.h"
#include "mtd.h"
+#include "crc32.h"
-#define TRX_MAGIC 0x30524448 /* "HDR0" */
#define MAX_ARGS 8
-
-#define DEBUG
-
#define JFFS2_DEFAULT_DIR "" /* directory name without /, empty means root dir */
-#define SYSTYPE_UNKNOWN 0
-#define SYSTYPE_BROADCOM 1
-/* to be continued */
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define STORE32_LE(X) ((((X) & 0x000000FF) << 24) | (((X) & 0x0000FF00) << 8) | (((X) & 0x00FF0000) >> 8) | (((X) & 0xFF000000) >> 24))
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+#define STORE32_LE(X) (X)
+#else
+#error unkown endianness!
+#endif
+
+ssize_t pread(int fd, void *buf, size_t count, off_t offset);
+ssize_t pwrite(int fd, const void *buf, size_t count, off_t offset);
+#define TRX_MAGIC 0x30524448 /* "HDR0" */
struct trx_header {
uint32_t magic; /* "HDR0" */
uint32_t len; /* Length of file including header */
int mtdsize = 0;
int erasesize = 0;
-int mtd_open(const char *mtd)
+int mtd_open(const char *mtd, bool block)
{
FILE *fp;
char dev[PATH_MAX];
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/%d", i);
+ snprintf(dev, sizeof(dev), "/dev/mtd%s/%d", (block ? "block" : ""), i);
if ((ret=open(dev, flags))<0) {
- snprintf(dev, sizeof(dev), "/dev/mtd%d", i);
+ snprintf(dev, sizeof(dev), "/dev/mtd%s%d", (block ? "block" : ""), i);
ret=open(dev, flags);
}
fclose(fp);
struct mtd_info_user mtdInfo;
int fd;
- fd = mtd_open(mtd);
+ fd = mtd_open(mtd, false);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
- return 0;
+ return -1;
}
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
close(fd);
- return 0;
+ return -1;
}
mtdsize = mtdInfo.size;
erasesize = mtdInfo.erasesize;
mtdEraseInfo.start = offset;
mtdEraseInfo.length = erasesize;
ioctl(fd, MEMUNLOCK, &mtdEraseInfo);
- if (ioctl (fd, MEMERASE, &mtdEraseInfo) < 0) {
- fprintf(stderr, "Erasing mtd failed.\n");
- exit(1);
- }
+ 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;
}
-#ifdef target_brcm
-static int
-image_check_brcm(int imagefd, const char *mtd)
-{
- struct trx_header *trx = (struct trx_header *) buf;
- int fd;
-
- if (strcmp(mtd, "linux") != 0)
- return 1;
-
- buflen = read(imagefd, buf, 32);
- if (buflen < 32) {
- fprintf(stdout, "Could not get image header, file too small (%ld bytes)\n", buflen);
- return 0;
- }
-
- if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
- if (quiet < 2) {
- fprintf(stderr, "Bad trx header\n");
- fprintf(stderr, "This is not the correct file format; refusing to flash.\n"
- "Please specify the correct file or use -f to force.\n");
- }
- return 0;
- }
-
- /* check if image fits to mtd device */
- fd = mtd_check_open(mtd);
- if(fd < 0) {
- fprintf(stderr, "Could not open mtd device: %s\n", mtd);
- exit(1);
- }
-
- if(mtdsize < trx->len) {
- fprintf(stderr, "Image too big for partition: %s\n", mtd);
- close(fd);
- return 0;
- }
-
- close(fd);
- return 1;
-}
-#endif /* target_brcm */
-
static int
image_check(int imagefd, const char *mtd)
{
- int fd, systype;
- size_t count;
- char *c;
- FILE *f;
-
+ int ret = 1;
#ifdef target_brcm
- return image_check_brcm(imagefd, mtd);
+ ret = trx_check(imagefd, mtd, buf, &buflen);
#endif
+ return ret;
}
static int mtd_check(const char *mtd)
{
+ char *next = NULL;
+ char *str = NULL;
int fd;
- fd = mtd_check_open(mtd);
- if (!fd)
- return 0;
+ if (strchr(mtd, ':')) {
+ str = strdup(mtd);
+ mtd = str;
+ }
- if (!buf)
- buf = malloc(erasesize);
+ 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);
- close(fd);
return 1;
}
static int
mtd_unlock(const char *mtd)
{
- int fd;
struct erase_info_user mtdLockInfo;
+ char *next = NULL;
+ char *str = NULL;
+ int fd;
- fd = mtd_check_open(mtd);
- if(fd <= 0) {
- fprintf(stderr, "Could not open mtd device: %s\n", mtd);
- exit(1);
+ if (strchr(mtd, ':')) {
+ str = strdup(mtd);
+ mtd = str;
}
- if (quiet < 2)
- fprintf(stderr, "Unlocking %s ...\n", mtd);
+ 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;
- if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) {
+ mtdLockInfo.start = 0;
+ mtdLockInfo.length = mtdsize;
+ ioctl(fd, MEMUNLOCK, &mtdLockInfo);
close(fd);
- return 0;
- }
-
- close(fd);
+ mtd = next;
+ } while (next);
+
+ if (str)
+ free(str);
+
return 0;
}
fprintf(stderr, "Erasing %s ...\n", mtd);
fd = mtd_check_open(mtd);
- if(fd <= 0) {
+ if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
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_fixtrx(const char *mtd, size_t offset)
+{
+ int fd;
+ struct trx_header *trx;
+ char *buf;
+ ssize_t res;
+ size_t block_offset;
+
+ if (quiet < 2)
+ fprintf(stderr, "Trying to fix trx header in %s at 0x%x...\n", mtd, offset);
+
+ block_offset = offset & ~(erasesize - 1);
+ offset -= block_offset;
+
+ fd = mtd_check_open(mtd);
+ if(fd < 0) {
+ fprintf(stderr, "Could not open mtd device: %s\n", mtd);
+ exit(1);
+ }
+
+ if (block_offset + erasesize > mtdsize) {
+ fprintf(stderr, "Offset too large, device size 0x%x\n", mtdsize);
+ exit(1);
+ }
+
+ buf = malloc(erasesize);
+ if (!buf) {
+ perror("malloc");
+ exit(1);
+ }
+
+ res = pread(fd, buf, erasesize, block_offset);
+ if (res != erasesize) {
+ perror("pread");
+ exit(1);
+ }
+
+ trx = (struct trx_header *) (buf + offset);
+ if (trx->magic != STORE32_LE(0x30524448)) {
+ fprintf(stderr, "No trx magic found\n");
+ exit(1);
+ }
+
+ if (trx->len == STORE32_LE(erasesize - offset)) {
+ if (quiet < 2)
+ fprintf(stderr, "Header already fixed, exiting\n");
+ close(fd);
+ return 0;
+ }
+
+ trx->len = STORE32_LE(erasesize - offset);
+
+ trx->crc32 = STORE32_LE(crc32buf((char*) &trx->flag_version, erasesize - offset - 3*4));
+ if (mtd_erase_block(fd, block_offset)) {
+ fprintf(stderr, "Can't erease block at 0x%x (%s)\n", block_offset, strerror(errno));
+ exit(1);
+ }
+
+ if (quiet < 2)
+ fprintf(stderr, "New crc32: 0x%x, rewriting block\n", trx->crc32);
+
+ if (pwrite(fd, buf, erasesize, block_offset) != erasesize) {
+ fprintf(stderr, "Error writing block (%s)\n", strerror(errno));
+ exit(1);
+ }
+
+ if (quiet < 2)
+ fprintf(stderr, "Done.\n");
+
+ close (fd);
+ sync();
+ return 0;
+
+}
+
static int
mtd_refresh(const char *mtd)
{
fprintf(stderr, "Refreshing mtd partition %s ... ", mtd);
fd = mtd_check_open(mtd);
- if(fd <= 0) {
+ if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
exit(1);
}
}
static int
-mtd_write(int imagefd, const char *mtd)
+mtd_write(int imagefd, const char *mtd, char *fis_layout)
{
- int fd, i, result;
- size_t r, w, e;
- struct erase_info_user mtdEraseInfo;
- int ret = 0;
+ char *next = NULL;
+ char *str = NULL;
+ int fd, result;
+ ssize_t r, w, e;
+ uint32_t offset = 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 (quiet < 2)
fprintf(stderr, "Writing from %s to %s ... ", imagefile, mtd);
- r = w = e = 0;
+ w = e = 0;
if (!quiet)
fprintf(stderr, " [ ]");
for (;;) {
- /* buffer may contain data already (from trx check) */
- r = read(imagefd, buf + buflen, erasesize - buflen);
- if (r < 0)
- break;
+ /* 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;
+ }
- buflen += r;
+ if (buflen == 0)
+ break;
if (jffs2file) {
- if (memcmp(buf, JFFS2_EOF, sizeof(JFFS2_EOF)) == 0) {
+ 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 to from %s to %s...", jffs2file, mtd);
+ fprintf(stderr, "\nAppending jffs2 data from %s to %s...", jffs2file, mtd);
/* got an EOF marker - this is the place to add some jffs2 data */
- mtd_replace_jffs2(fd, e, jffs2file);
+ mtd_replace_jffs2(mtd, fd, e, jffs2file);
goto done;
}
/* no EOF marker, make sure we figure out the last inode number
if (!quiet)
fprintf(stderr, "\b\b\b[e]");
- mtd_erase_block(fd, 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, buflen)) < buflen) {
+
+ if ((result = write(fd, buf + offset, buflen)) < buflen) {
if (result < 0) {
fprintf(stderr, "Error writing image.\n");
exit(1);
}
w += buflen;
- /* not enough data - eof */
- if (buflen < erasesize)
- break;
-
buflen = 0;
+ offset = 0;
}
+
if (!quiet)
- fprintf(stderr, "\b\b\b\b");
+ 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>\n\n"
+ 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"
" 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"
+ " fixtrx fix the checksum in a trx header on first boot\n"
"Following options are available:\n"
" -q quiet mode (once: no [w] on writing,\n"
" twice: no status messages)\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"
+ " -o offset offset of the trx header in the partition (for fixtrx)\n"
+#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");
int main (int argc, char **argv)
{
- int ch, i, boot, unlock, imagefd, force, unlocked;
- char *erase[MAX_ARGS], *device;
+ int ch, i, boot, imagefd = 0, force, unlocked;
+ char *erase[MAX_ARGS], *device = NULL;
+ char *fis_layout = NULL;
+ size_t offset = 0;
enum {
CMD_ERASE,
CMD_WRITE,
CMD_UNLOCK,
CMD_REFRESH,
- CMD_JFFS2WRITE
- } cmd;
-
+ CMD_JFFS2WRITE,
+ CMD_FIXTRX,
+ } cmd = -1;
+
erase[0] = NULL;
boot = 0;
force = 0;
buflen = 0;
quiet = 0;
- while ((ch = getopt(argc, argv, "frqe:d:j:")) != -1)
+ while ((ch = getopt(argc, argv,
+#ifdef FIS_SUPPORT
+ "F:"
+#endif
+ "frqe:d:j:o:")) != -1)
switch (ch) {
case 'f':
force = 1;
i = 0;
while ((erase[i] != NULL) && ((i + 1) < MAX_ARGS))
i++;
-
+
erase[i++] = optarg;
erase[i] = NULL;
break;
case 'd':
jffs2dir = optarg;
break;
+ case 'o':
+ 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();
} else if ((strcmp(argv[0], "erase") == 0) && (argc == 2)) {
cmd = CMD_ERASE;
device = argv[1];
+ } else if ((strcmp(argv[0], "fixtrx") == 0) && (argc == 2)) {
+ cmd = CMD_FIXTRX;
+ 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;
exit(1);
}
}
-
+
if (!mtd_check(device)) {
fprintf(stderr, "Can't open device for writing!\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");
}
sync();
-
+
i = 0;
unlocked = 0;
while (erase[i] != NULL) {
unlocked = 1;
i++;
}
-
-
+
switch (cmd) {
case CMD_UNLOCK:
if (!unlocked)
case CMD_WRITE:
if (!unlocked)
mtd_unlock(device);
- mtd_write(imagefd, device);
+ mtd_write(imagefd, device, fis_layout);
break;
case CMD_JFFS2WRITE:
if (!unlocked)
case CMD_REFRESH:
mtd_refresh(device);
break;
+ case CMD_FIXTRX:
+ mtd_fixtrx(device, offset);
+ break;
}
sync();
-
+
if (boot)
do_reboot();
projects / openwrt.git / blobdiff