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-rw-r--r--package/system/mtd/src/mtd.c51
1 files changed, 46 insertions, 5 deletions
diff --git a/package/system/mtd/src/mtd.c b/package/system/mtd/src/mtd.c
index 73335f3fbe..604ca28ae2 100644
--- a/package/system/mtd/src/mtd.c
+++ b/package/system/mtd/src/mtd.c
@@ -58,6 +58,7 @@ int no_erase;
int mtdsize = 0;
int erasesize = 0;
int jffs2_skip_bytes=0;
+int mtdtype = 0;
int mtd_open(const char *mtd, bool block)
{
@@ -103,10 +104,28 @@ int mtd_check_open(const char *mtd)
}
mtdsize = mtdInfo.size;
erasesize = mtdInfo.erasesize;
+ mtdtype = mtdInfo.type;
return fd;
}
+int mtd_block_is_bad(int fd, int offset)
+{
+ int r = 0;
+ loff_t o = offset;
+
+ if (mtdtype == MTD_NANDFLASH)
+ {
+ r = ioctl(fd, MEMGETBADBLOCK, &o);
+ if (r < 0)
+ {
+ fprintf(stderr, "Failed to get erase block status\n");
+ exit(1);
+ }
+ }
+ return r;
+}
+
int mtd_erase_block(int fd, int offset)
{
struct erase_info_user mtdEraseInfo;
@@ -236,10 +255,14 @@ mtd_erase(const char *mtd)
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);
+ if (mtd_block_is_bad(fd, mtdEraseInfo.start)) {
+ if (!quiet)
+ fprintf(stderr, "\nSkipping bad block at 0x%x ", mtdEraseInfo.start);
+ } else {
+ 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);
@@ -324,6 +347,7 @@ mtd_write(int imagefd, const char *mtd, char *fis_layout, size_t part_offset)
ssize_t skip = 0;
uint32_t offset = 0;
int jffs2_replaced = 0;
+ int skip_bad_blocks = 0;
#ifdef FIS_SUPPORT
static struct fis_part new_parts[MAX_ARGS];
@@ -429,6 +453,12 @@ resume:
if (buflen == 0)
break;
+ if (buflen < erasesize) {
+ /* Pad block to eraseblock size */
+ memset(&buf[buflen], 0xff, erasesize - buflen);
+ buflen = erasesize;
+ }
+
if (skip > 0) {
skip -= buflen;
buflen = 0;
@@ -466,10 +496,21 @@ resume:
/* need to erase the next block before writing data to it */
if(!no_erase)
{
- while (w + buflen > e) {
+ while (w + buflen > e - skip_bad_blocks) {
if (!quiet)
fprintf(stderr, "\b\b\b[e]");
+ if (mtd_block_is_bad(fd, e)) {
+ if (!quiet)
+ fprintf(stderr, "\nSkipping bad block at 0x%08x ", e);
+
+ skip_bad_blocks += erasesize;
+ e += erasesize;
+
+ // Move the file pointer along over the bad block.
+ lseek(fd, erasesize, SEEK_CUR);
+ continue;
+ }
if (mtd_erase_block(fd, e) < 0) {
if (next) {