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[packages] mtd-utils: add a bad block counter to mtd_debug, based on patch from http://dev.laptop.org/~martin/mtd_debug.patch

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git-svn-id: svn://svn.openwrt.org/openwrt/packages@28520 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
jow 2011-10-22 14:16:45 +00:00
parent 7d726fc07d
commit 1287858c11
1 changed files with 73 additions and 0 deletions
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73
utils/mtd-utils/patches/100-mtd-debug-add-bad-block-counter.patch Normal file
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@ -0,0 +1,73 @@
--- a/mtd_debug.c
+++ b/mtd_debug.c
@@ -236,6 +236,7 @@ int showinfo (int fd)
int i,err,n;
struct mtd_info_user mtd;
static struct region_info_user region[1024];
+ int iNumOfBadBlocks = 0;
err = getmeminfo (fd,&mtd);
if (err < 0)
@@ -328,6 +329,11 @@ int showinfo (int fd)
printf ("\nmtd.oobsize = ");
printsize (mtd.oobsize);
+ printf ("\nmtd.badblockscount = ");
+ iNumOfBadBlocks = get_bb_number(fd, &mtd);
+ if (iNumOfBadBlocks > -1)
+ printf ("%d", iNumOfBadBlocks);
+
printf ("\n"
"regions = %d\n"
"\n",
@@ -347,6 +353,50 @@ int showinfo (int fd)
return (0);
}
+int get_bb_number(int fd, struct mtd_info_user *meminfo)
+{
+ int isNAND = (meminfo->type == MTD_NANDFLASH);
+ int ibbCounter = 0;
+ /* Last 4 blocks of any MTD device are protected and
+ MTD reports them as badblocks. */
+ int usablesize = meminfo->size - (4 * meminfo->erasesize);
+ erase_info_t erase;
+ erase.length = meminfo->erasesize;
+
+ for (erase.start = 0;
+ erase.start < usablesize;
+ erase.start += meminfo->erasesize)
+ {
+ loff_t offset = erase.start;
+ int ret = ioctl(fd, MEMGETBADBLOCK, &offset);
+
+ if (ret > 0)
+ {
+ ibbCounter++;
+ continue;
+ }
+ else if (ret < 0)
+ {
+ if (errno == EOPNOTSUPP)
+ {
+ if (isNAND)
+ {
+ printf("Bad block check not available");
+ return -1;
+ }
+ }
+ else
+ {
+ printf("MTD get bad block failed: %s",
+ strerror(errno));
+ return -1;
+ }
+ }
+ }
+
+ return ibbCounter;
+}
+
void showusage (const char *progname)
{
fprintf (stderr,