/**
* \brief process bad block: erase bad block, mark it as 'bad' and put the node to bad block list.
* \param[in] dev uffs device
* \param[in] node bad block tree node (before the block turn 'bad', it must belong to something ...)
*/
void uffs_BadBlockProcess(uffs_Device *dev, TreeNode *node)
{
if (HAVE_BADBLOCK(dev)) {
// mark the bad block
uffs_FlashMarkBadBlock(dev, dev->bad.block);
// and put it into bad block list
if (node != NULL)
uffs_TreeInsertToBadBlockList(dev, node);
//clear bad block mark.
dev->bad.block = UFFS_INVALID_BLOCK;
}
}
static void _ForceFormatAndCheckBlock(uffs_Device *dev, int block)
{
int i, j;
uffs_Buf *buf = NULL;
UBOOL bad = U_TRUE;
URET ret;
struct uffs_FlashOpsSt *ops = dev->ops;
struct uffs_TagStoreSt ts;
u8 *spare = NULL;
buf = uffs_BufClone(dev, NULL);
if (buf == NULL) {
uffs_Perror(UFFS_MSG_SERIOUS,
"Alloc page buffer fail ! Format stoped.");
goto ext;
}
spare = (u8 *)uffs_PoolGet(SPOOL(dev));
if (spare == NULL)
goto ext;
//step 1: Erase, fully fill with 0x0, and check
ret = uffs_FlashEraseBlock(dev, block);
if (UFFS_FLASH_IS_BAD_BLOCK(ret))
goto bad_out;
memset(buf->header, 0, dev->com.pg_size);
memset(&ts, 0, sizeof(ts));
memset(spare, 0, dev->attr->spare_size);
for (i = 0; i < dev->attr->pages_per_block; i++) {
if (ops->WritePageWithLayout)
ret = ops->WritePageWithLayout(dev, block, i, buf->header, dev->com.pg_size, NULL, &ts);
else
ret = ops->WritePage(dev, block, i, buf->header, dev->com.pg_size, spare, dev->attr->spare_size);
if (UFFS_FLASH_IS_BAD_BLOCK(ret))
goto bad_out;
}
for (i = 0; i < dev->attr->pages_per_block; i++) {
memset(buf->header, 0xFF, dev->com.pg_size);
memset(&ts, 0xFF, sizeof(ts));
memset(spare, 0xFF, dev->attr->spare_size);
if (ops->ReadPageWithLayout) {
ret = ops->ReadPageWithLayout(dev, block, i, buf->header, dev->com.pg_size, NULL, &ts, NULL);
if (UFFS_FLASH_IS_BAD_BLOCK(ret))
goto bad_out;
for (j = 0; j < dev->com.pg_size; j++)
if (buf->header[j] != 0)
goto bad_out;
for (j = 0; j < sizeof(ts); j++)
if (((u8 *)&ts)[j] != 0)
goto bad_out;
}
else {
ret = ops->ReadPage(dev, block, i, buf->header, dev->com.pg_size, NULL, spare, dev->attr->spare_size);
if (UFFS_FLASH_IS_BAD_BLOCK(ret))
goto bad_out;
for (j = 0; j < dev->com.pg_size; j++)
if (buf->header[j] != 0)
goto bad_out;
for (j = 0; j < dev->attr->spare_size; j++)
if (spare[j] != 0)
goto bad_out;
}
}
//step 2: Erase, and check
ret = uffs_FlashEraseBlock(dev, block);
if (UFFS_FLASH_IS_BAD_BLOCK(ret))
goto bad_out;
for (i = 0; i < dev->attr->pages_per_block; i++) {
memset(buf->header, 0, dev->com.pg_size);
memset(&ts, 0, sizeof(ts));
memset(spare, 0, dev->attr->spare_size);
if (ops->ReadPageWithLayout) {
ret = ops->ReadPageWithLayout(dev, block, i, buf->header, dev->com.pg_size, NULL, &ts, NULL);
if (UFFS_FLASH_IS_BAD_BLOCK(ret))
goto bad_out;
for (j = 0; j < dev->com.pg_size; j++)
if (buf->header[j] != 0xFF)
goto bad_out;
for (j = 0; j < sizeof(ts); j++)
if (((u8 *)&ts)[j] != 0xFF)
goto bad_out;
}
else {
ret = ops->ReadPage(dev, block, i, buf->header, dev->com.pg_size, NULL, spare, dev->attr->spare_size);
if (UFFS_FLASH_IS_BAD_BLOCK(ret))
goto bad_out;
for (j = 0; j < dev->com.pg_size; j++)
if (buf->header[j] != 0xFF)
goto bad_out;
for (j = 0; j < dev->attr->spare_size; j++)
if (spare[j] != 0xFF)
goto bad_out;
}
}
// format succ
bad = U_FALSE;
bad_out:
if (bad == U_TRUE)
uffs_FlashMarkBadBlock(dev, block);
ext:
if (buf)
uffs_BufFreeClone(dev, buf);
if (spare)
uffs_PoolPut(SPOOL(dev), spare);
return;
}
