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platform_system_core
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Merge "toolbox: nandread: Add options to extract raw images, partial images, and fix bad block check."

This commit is contained in:
Arve Hjønnevåg 2010-03-08 14:51:01 -08:00 committed by Android (Google) Code Review
parent 3e1aac6c4d b6b8793b8b
commit b51cb880c0
1 changed files with 50 additions and 20 deletions
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70
toolbox/nandread.c
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@ -8,7 +8,7 @@
#include <mtd/mtd-user.h>
#include <sys/ioctl.h>
int test_empty(const char *buf, size_t size)
static int test_empty(const char *buf, size_t size)
{
while(size--) {
if (*buf++ != 0xff)
@ -29,12 +29,14 @@ int nandread_main(int argc, char **argv)
int ret;
int verbose = 0;
void *buffer;
loff_t pos, opos;
loff_t pos, opos, end, bpos;
loff_t start = 0, len = 0;
int c;
int i;
int empty_pages = 0;
int page_count = 0;
int bad_block;
int rawmode = 0;
uint32_t *oob_data;
uint8_t *oob_fixed;
size_t spare_size = 64;
@ -44,7 +46,7 @@ int nandread_main(int argc, char **argv)
struct nand_ecclayout ecclayout;
do {
c = getopt(argc, argv, "d:f:s:hv");
c = getopt(argc, argv, "d:f:s:S:L:Rhv");
if (c == EOF)
break;
switch (c) {
@ -57,6 +59,15 @@ int nandread_main(int argc, char **argv)
case 's':
spare_size = atoi(optarg);
break;
case 'S':
start = strtoll(optarg, NULL, 0);
break;
case 'L':
len = strtoll(optarg, NULL, 0);
break;
case 'R':
rawmode = 1;
break;
case 'v':
verbose++;
break;
@ -65,6 +76,9 @@ int nandread_main(int argc, char **argv)
" -d <dev> Read from <dev>\n"
" -f <file> Write to <file>\n"
" -s <size> Number of spare bytes in file (default 64)\n"
" -R Raw mode\n"
" -S <start> Start offset (default 0)\n"
" -L <len> Length (default 0)\n"
" -v Print info\n"
" -h Print help\n", argv[0]);
return -1;
@ -129,7 +143,7 @@ int nandread_main(int argc, char **argv)
oobbuf.length = mtdinfo.oobsize;
oob_data = (uint32_t *)((uint8_t *)buffer + mtdinfo.writesize);
memset(oob_data, 0xff, spare_size);
memset(oob_data, 0xff, mtdinfo.oobsize + spare_size);
oobbuf.ptr = (uint8_t *)oob_data + spare_size;
ret = ioctl(fd, ECCGETLAYOUT, &ecclayout);
@ -160,21 +174,34 @@ int nandread_main(int argc, char **argv)
printf("initial ecc bbtblocks: %u\n", initial_ecc.bbtblocks);
}
for (pos = 0, opos = 0; pos < mtdinfo.size; pos += mtdinfo.writesize) {
if (rawmode) {
rawmode = mtdinfo.oobsize;
ret = ioctl(fd, MTDFILEMODE, MTD_MODE_RAW);
if (ret) {
fprintf(stderr, "failed set raw mode for %s, %s\n",
devname, strerror(errno));
return 1;
}
}
end = len ? (start + len) : mtdinfo.size;
for (pos = start, opos = 0; pos < end; pos += mtdinfo.writesize) {
bad_block = 0;
if (verbose > 3)
printf("reading at %llx\n", pos);
lseek64(fd, pos, SEEK_SET);
ret = read(fd, buffer, mtdinfo.writesize);
ret = read(fd, buffer, mtdinfo.writesize + rawmode);
if (ret < (int)mtdinfo.writesize) {
fprintf(stderr, "short read at %llx, %d\n", pos, ret);
bad_block = 2;
}
oobbuf.start = pos;
ret = ioctl(fd, MEMREADOOB, &oobbuf);
if (ret) {
fprintf(stderr, "failed to read oob data at %llx, %d\n", pos, ret);
bad_block = 2;
if (!rawmode) {
oobbuf.start = pos;
ret = ioctl(fd, MEMREADOOB, &oobbuf);
if (ret) {
fprintf(stderr, "failed to read oob data at %llx, %d\n", pos, ret);
bad_block = 2;
}
}
ret = ioctl(fd, ECCGETSTATS, &ecc);
if (ret) {
@ -182,7 +209,8 @@ int nandread_main(int argc, char **argv)
devname, strerror(errno));
return 1;
}
ret = ioctl(fd, MEMGETBADBLOCK, &pos);
bpos = pos / mtdinfo.erasesize * mtdinfo.erasesize;
ret = ioctl(fd, MEMGETBADBLOCK, &bpos);
if (ret && errno != EOPNOTSUPP) {
printf("badblock at %llx\n", pos);
bad_block = 1;
@ -196,14 +224,16 @@ int nandread_main(int argc, char **argv)
if (ecc.bbtblocks != last_ecc.bbtblocks)
printf("ecc bbtblocks, %u, at %llx\n", ecc.bbtblocks - last_ecc.bbtblocks, pos);
oob_fixed = (uint8_t *)oob_data;
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES; i++) {
int len = ecclayout.oobfree[i].length;
if (oob_fixed + len > oobbuf.ptr)
len = oobbuf.ptr - oob_fixed;
if (len) {
memcpy(oob_fixed, oobbuf.ptr + ecclayout.oobfree[i].offset, len);
oob_fixed += len;
if (!rawmode) {
oob_fixed = (uint8_t *)oob_data;
for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES; i++) {
int len = ecclayout.oobfree[i].length;
if (oob_fixed + len > oobbuf.ptr)
len = oobbuf.ptr - oob_fixed;
if (len) {
memcpy(oob_fixed, oobbuf.ptr + ecclayout.oobfree[i].offset, len);
oob_fixed += len;
}
}
}