#include "mtd-api.h"
#include "fis.h"
#include "mtd.h"
+#include "crc32.h"
#define MAX_ARGS 8
#define JFFS2_DEFAULT_DIR "" /* directory name without /, empty means root dir */
+#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 */
}
+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)
{
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)
{
char *str = NULL;
int fd, result;
ssize_t r, w, e;
+ ssize_t skip = 0;
uint32_t offset = 0;
#ifdef FIS_SUPPORT
exit(1);
}
- if (quiet < 2)
- fprintf(stderr, "Writing from %s to %s ... ", imagefile, mtd);
+ indicate_writing(mtd);
w = e = 0;
- if (!quiet)
- fprintf(stderr, " [ ]");
-
for (;;) {
/* buffer may contain data already (from trx check or last mtd partition write attempt) */
while (buflen < erasesize) {
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 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(mtd, fd, e, jffs2file);
- goto done;
+ skip = mtd_replace_jffs2(mtd, fd, e, jffs2file);
+
+ 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 */
" 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"
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_JFFS2WRITE,
+ CMD_FIXTRX,
} cmd = -1;
erase[0] = NULL;
#ifdef FIS_SUPPORT
"F:"
#endif
- "frqe:d:j:")) != -1)
+ "frqe:d:j:o:")) != -1)
switch (ch) {
case 'f':
force = 1;
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;
} 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];
case CMD_REFRESH:
mtd_refresh(device);
break;
+ case CMD_FIXTRX:
+ mtd_fixtrx(device, offset);
+ break;
}
sync();
projects / openwrt.git / blobdiff