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add mtd cleanup, fix #17

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SVN-Revision: 2419
This commit is contained in:
Felix Fietkau 2005-11-11 15:28:42 +00:00
parent 77f30d9fb6
commit 2cba595a92
1 changed files with 123 additions and 92 deletions
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177
openwrt/package/mtd/mtd.c
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@ -2,7 +2,7 @@
* mtd - simple memory technology device manipulation tool
*
* Copyright (C) 2005 Waldemar Brodkorb <wbx@dass-it.de>,
* Felix Fietkau <nbd@vd-s.ath.cx>
* 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
@ -20,7 +20,7 @@
*
* $Id$
*
* code is based on linux-mtd example code
* The code is based on the linux-mtd examples.
*/
#include <limits.h>
@ -43,9 +43,11 @@
#include <linux/mtd/mtd.h>
#define TRX_MAGIC 0x30524448 /* "HDR0" */
#define BUFSIZE (10 * 1024)
#define BUFSIZE (16 * 1024)
#define MAX_ARGS 8
#define DEBUG
struct trx_header {
uint32_t magic; /* "HDR0" */
uint32_t len; /* Length of file including header */
@ -54,49 +56,33 @@ struct trx_header {
uint32_t offsets[3]; /* Offsets of partitions from start of header */
};
char buf[BUFSIZE];
int buflen;
int
trx_check(const char *trxfile, const char *mtd, int force)
trx_check(int imagefd, const char *mtd)
{
struct mtd_info_user mtdInfo;
int trxfd, fd;
int fd;
size_t count;
struct trx_header trx;
struct trx_header *trx = (struct trx_header *) buf;
struct stat trxstat;
trxfd = open(trxfile,O_RDONLY);
if(trxfd < 0) {
fprintf(stderr, "Could not open image: %s\n", trxfile);
exit(1);
buflen = read(imagefd, buf, sizeof(struct trx_header));
if (buflen < sizeof(struct trx_header)) {
fprintf(stderr, "Could not get trx header, file too small (%ld bytes)\n", buflen);
return 0;
}
if (fstat(trxfd,&trxstat) < 0) {
fprintf(stderr, "Could not get image file status: %s\n", trxfile);
close(trxfd);
exit(1);
}
if (force == 0) {
count = read(trxfd, &trx, sizeof(struct trx_header));
if (count < sizeof(struct trx_header)) {
fprintf(stderr, "Could not get trx header, file too small (%ld bytes)\n", count);
close(trxfd);
exit(1);
}
if (trx.magic != TRX_MAGIC || trx.len < sizeof(struct trx_header)) {
if (trx->magic != TRX_MAGIC || trx->len < sizeof(struct trx_header)) {
fprintf(stderr, "Bad trx header\n");
fprintf(stderr, "If this is a firmware in bin format, like some of the\n"
"original firmware files are, use following command to convert to trx:\n"
"dd if=firmware.bin of=firmware.trx bs=32 skip=1\n");
close(trxfd);
exit(1);
}
lseek(trxfd, 0, SEEK_SET);
return 0;
}
/* check if image fits to mtd device */
fd = mtd_open(mtd, O_RDWR);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
@ -105,22 +91,37 @@ trx_check(const char *trxfile, const char *mtd, int force)
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
close(fd);
exit(1);
}
if(mtdInfo.size < trxstat.st_size) {
if(mtdInfo.size < trx->len) {
fprintf(stderr, "Image too big for partition: %s\n", mtd);
close(trxfd);
close(fd);
exit(1);
return 0;
}
printf("Writing %s to %s ...\n", trxfile, mtd);
return 1;
}
int mtd_check(char *mtd)
{
struct mtd_info_user mtdInfo;
int fd;
fd = mtd_open(mtd, O_RDWR);
if(fd < 0) {
fprintf(stderr, "Could not open mtd device: %s\n", mtd);
return 0;
}
if(ioctl(fd, MEMGETINFO, &mtdInfo)) {
fprintf(stderr, "Could not get MTD device info from %s\n", mtd);
close(fd);
return 0;
}
close(fd);
return(trxfd);
return 1;
}
int
@ -142,7 +143,7 @@ mtd_unlock(const char *mtd)
exit(1);
}
printf("Unlocking %s ...\n", mtd);
fprintf(stderr, "Unlocking %s ...\n", mtd);
mtdLockInfo.start = 0;
mtdLockInfo.length = mtdInfo.size;
if(ioctl(fd, MEMUNLOCK, &mtdLockInfo)) {
@ -194,7 +195,7 @@ mtd_erase(const char *mtd)
exit(1);
}
printf("Erasing %s ...\n", mtd);
fprintf(stderr, "Erasing %s ...\n", mtd);
mtdEraseInfo.length = mtdInfo.erasesize;
for (mtdEraseInfo.start = 0;
@ -215,20 +216,12 @@ mtd_erase(const char *mtd)
}
int
mtd_write(int trxfd, const char *mtd)
mtd_write(int imagefd, const char *mtd)
{
int fd,i;
size_t result,size,written;
int fd, i, result;
size_t r, w, e;
struct mtd_info_user mtdInfo;
struct erase_info_user mtdEraseInfo;
unsigned char src[BUFSIZE],dest[BUFSIZE];
struct stat trxstat;
if (fstat(trxfd,&trxstat) < 0) {
fprintf(stderr, "Could not get trx image file status\n");
close(trxfd);
exit(1);
}
fd = mtd_open(mtd, O_RDWR);
if(fd < 0) {
@ -242,47 +235,59 @@ mtd_write(int trxfd, const char *mtd)
exit(1);
}
mtdEraseInfo.start = 0;
mtdEraseInfo.length = trxstat.st_size & ~(mtdInfo.erasesize -1);
if(trxstat.st_size % mtdInfo.erasesize) mtdEraseInfo.length += mtdInfo.erasesize;
r = w = e = 0;
fprintf(stderr, " [ ]");
for (;;) {
/* buffer may contain data already (from trx check) */
r = buflen;
r += read(imagefd, buf + buflen, BUFSIZE - buflen);
w += r;
/* EOF */
if (r <= 0) break;
/* need to erase the next block before writing data to it */
while (w > e) {
mtdEraseInfo.start = e;
mtdEraseInfo.length = mtdInfo.erasesize;
fprintf(stderr, "\b\b\b[e]");
/* erase the chunk */
if (ioctl (fd,MEMERASE,&mtdEraseInfo) < 0) {
fprintf(stderr, "Erasing mtd failed: %s\n", mtd);
exit(1);
}
e += mtdInfo.erasesize;
}
size = trxstat.st_size;
i = BUFSIZE;
written = 0;
fprintf(stderr, "\b\b\b[w]");
while (size) {
if (size < BUFSIZE) i = size;
read(trxfd,src,i);
result = write(fd,src,i);
if (i != result) {
if ((result = write(fd, buf, r)) < r) {
if (result < 0) {
fprintf(stderr,"Error while writing image");
fprintf(stderr, "Error writing image.\n");
exit(1);
} else {
fprintf(stderr, "Insufficient space.\n");
exit(1);
}
fprintf(stderr,"Error writing image");
exit(1);
}
written += i;
size -= i;
buflen = 0;
}
fprintf(stderr, "\b\b\b\b");
return 0;
}
void usage(void)
{
printf("Usage: mtd [<options> ...] <command> [<arguments> ...] <device>\n\n"
fprintf(stderr, "Usage: mtd [<options> ...] <command> [<arguments> ...] <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 to device\n"
" write <imagefile>|- write <imagefile> (use - for stdin) to device\n"
"Following options are available:\n"
" -r reboot after successful command\n"
" -f force write without trx checks\n"
@ -294,8 +299,8 @@ void usage(void)
int main (int argc, char **argv)
{
int ch, i, boot, unlock, trxfd, force;
char *erase[MAX_ARGS], *device;
int ch, i, boot, unlock, imagefd, force;
char *erase[MAX_ARGS], *device, *imagefile;
enum {
CMD_ERASE,
CMD_WRITE,
@ -305,6 +310,7 @@ int main (int argc, char **argv)
erase[0] = NULL;
boot = 0;
force = 0;
buflen = 0;
while ((ch = getopt(argc, argv, "fre:")) != -1)
switch (ch) {
@ -342,8 +348,31 @@ int main (int argc, char **argv)
} 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 (system("grep Broadcom /proc/cpuinfo >&- >&-") != 0) {
/* check trx file before erasing or writing anything */
trxfd = trx_check(argv[1], device, force);
if (!trx_check(imagefd, device)) {
fprintf(stderr, "TRX check failed!\n");
if (!force)
exit(1);
}
} else {
if (!mtd_check(device)) {
fprintf(stderr, "Can't open device for writing!\n");
exit(1);
}
}
} else {
usage();
}
@ -366,7 +395,9 @@ int main (int argc, char **argv)
mtd_erase(device);
break;
case CMD_WRITE:
mtd_write(trxfd, device);
fprintf(stderr, "Writing from %s to %s ... ", imagefile, device);
mtd_write(imagefd, device);
fprintf(stderr, "\n");
break;
}