utils/mtd-utils/patches/100-mtd-debug-add-bad-block-counter.patch

   1 --- a/mtd_debug.c
   2 +++ b/mtd_debug.c
   3 @@ -238,6 +238,7 @@ int showinfo (int fd)
   4         int i,err,n;
   5         struct mtd_info_user mtd;
   6         static struct region_info_user region[1024];
   7 +       int iNumOfBadBlocks = 0;
   8
   9         err = getmeminfo (fd,&mtd);
  10         if (err < 0)
  11 @@ -330,6 +331,11 @@ int showinfo (int fd)
  12         printf ("\nmtd.oobsize = ");
  13         printsize (mtd.oobsize);
  14
  15 +       printf ("\nmtd.badblockscount = ");
  16 +       iNumOfBadBlocks = get_bb_number(fd, &mtd);
  17 +       if (iNumOfBadBlocks > -1)
  18 +               printf ("%d", iNumOfBadBlocks);
  19 +
  20         printf ("\n"
  21                         "regions = %d\n"
  22                         "\n",
  23 @@ -349,6 +355,50 @@ int showinfo (int fd)
  24         return (0);
  25  }
  26
  27 +int get_bb_number(int fd, struct mtd_info_user *meminfo)
  28 +{
  29 +       int isNAND = (meminfo->type == MTD_NANDFLASH);
  30 +       int ibbCounter = 0;
  31 +       /* Last 4 blocks of any MTD device are protected and
  32 +          MTD reports them as badblocks. */
  33 +       int usablesize = meminfo->size - (4 * meminfo->erasesize);
  34 +       erase_info_t erase;
  35 +       erase.length = meminfo->erasesize;
  36 +
  37 +       for (erase.start = 0;
  38 +            erase.start < usablesize;
  39 +            erase.start += meminfo->erasesize)
  40 +       {
  41 +               loff_t offset = erase.start;
  42 +               int ret = ioctl(fd, MEMGETBADBLOCK, &offset);
  43 +
  44 +               if (ret > 0)
  45 +               {
  46 +                       ibbCounter++;
  47 +                       continue;
  48 +               }
  49 +               else if (ret < 0)
  50 +               {
  51 +                       if (errno == EOPNOTSUPP)
  52 +                       {
  53 +                               if (isNAND)
  54 +                               {
  55 +                                       printf("Bad block check not available");
  56 +                                       return -1;
  57 +                               }
  58 +                       }
  59 +                       else
  60 +                       {
  61 +                               printf("MTD get bad block failed: %s",
  62 +                                       strerror(errno));
  63 +                               return -1;
  64 +                       }
  65 +               }
  66 +       }
  67 +
  68 +       return ibbCounter;
  69 +}
  70 +
  71  void showusage(void)
  72  {
  73         fprintf (stderr,