/*******************************************************************
* [BMT Interface]
*
* Description:
* Update BMT.
*
* Parameter:
* offset: update block/page offset.
* reason: update reason, see update_reason_t for reason.
* dat/oob: data and oob buffer for write fail.
*
* Return:
* Return true for success, and false for failure.
*******************************************************************/
bool update_bmt(u64 offset, update_reason_t reason, u8 * dat, u8 * oob)
{
int map_index;
int orig_bad_block = -1;
// int bmt_update_index;
int i;
u32 bad_index = (u32)(offset >> nand_chip_bmt->phys_erase_shift);
//return false;
if (reason == UPDATE_WRITE_FAIL)
{
MSG(INIT, "Write fail, need to migrate\n");
if (!(map_index = migrate_from_bad(offset, dat, oob)))
{
MSG(INIT, "migrate fail\n");
return false;
}
} else
{
if (!(map_index = find_available_block(false)))
{
MSG(INIT, "Cannot find block in pool\n");
return false;
}
}
// now let's update BMT
if (bad_index >= system_block_count) // mapped block become bad, find original bad block
{
for (i = 0; i < bmt_block_count; i++)
{
if (bmt.table[i].mapped_index == bad_index)
{
orig_bad_block = bmt.table[i].bad_index;
break;
}
}
// bmt.bad_count++;
MSG(INIT, "Mapped block becomes bad, orig bad block is 0x%x\n", orig_bad_block);
bmt.table[i].mapped_index = map_index;
} else
{
bmt.table[bmt.mapped_count].mapped_index = map_index;
bmt.table[bmt.mapped_count].bad_index = bad_index;
bmt.mapped_count++;
}
memset(oob_buf, 0xFF, sizeof(oob_buf));
fill_nand_bmt_buffer(&bmt, dat_buf, oob_buf);
if (!write_bmt_to_flash(dat_buf, oob_buf))
return false;
mark_block_bad_bmt(offset);
return true;
}
/*******************************************************************
* [BMT Interface]
*
* Description:
* Update BMT.
*
* Parameter:
* offset: update block/page offset.
* reason: update reason, see update_reason_t for reason.
* dat/oob: data and oob buffer for write fail.
*
* Return:
* Return true for success, and false for failure.
*******************************************************************/
bool update_bmt(u32 offset, update_reason_t reason, u8 * dat, u8 * oob)
{
int map_index;
int orig_bad_block = -1;
int i;
int bad_index = offset / BLOCK_SIZE_BMT;
if (reason == UPDATE_WRITE_FAIL)
{
MSG(INIT, "Write fail, need to migrate\n");
if (!(map_index = migrate_from_bad(offset, dat, oob)))
{
MSG(INIT, "migrate fail\n");
return false;
}
} else
{
if (!(map_index = find_available_block(false)))
{
MSG(INIT, "Cannot find block in pool\n");
return false;
}
}
if (bad_index >= system_block_count)
{
for (i = 0; i < bmt_block_count; i++)
{
if (bmt.table[i].mapped_index == bad_index)
{
orig_bad_block = bmt.table[i].bad_index;
break;
}
}
MSG(INIT, "Mapped block becomes bad, orig bad block is 0x%x\n", orig_bad_block);
bmt.table[i].mapped_index = map_index;
} else
{
bmt.table[bmt.mapped_count].mapped_index = map_index;
bmt.table[bmt.mapped_count].bad_index = bad_index;
bmt.mapped_count++;
}
memset(oob_buf, 0xFF, sizeof(oob_buf));
fill_nand_bmt_buffer(&bmt, dat_buf, oob_buf);
if (!write_bmt_to_flash(dat_buf, oob_buf))
return false;
mark_block_bad_bmt(offset);
return true;
}
static int migrate_from_bad(int offset, u8 * write_dat, u8 * write_oob)
{
int page;
int error_block = offset / BLOCK_SIZE_BMT;
int error_page = (offset / PAGE_SIZE_BMT) % page_per_block;
int to_index;
memcpy(oob_buf, write_oob, MAX_OOB_SIZE);
to_index = find_available_block(false);
if (!to_index)
{
MSG(INIT, "Cannot find an available block for BMT\n");
return 0;
}
{ // migrate error page first
MSG(INIT, "Write error page: 0x%x\n", error_page);
if (!write_dat)
{
nand_read_page_bmt(PAGE_ADDR(error_block) + error_page, dat_buf, NULL);
write_dat = dat_buf;
}
// memcpy(oob_buf, write_oob, MAX_OOB_SIZE);
if (error_block < system_block_count)
set_bad_index_to_oob(oob_buf, error_block); // if error_block is already a mapped block, original mapping index is in OOB.
if (!nand_write_page_bmt(PAGE_ADDR(to_index) + error_page, write_dat, oob_buf))
{
MSG(INIT, "Write to page 0x%x fail\n", PAGE_ADDR(to_index) + error_page);
mark_block_bad_bmt(OFFSET(to_index));
return migrate_from_bad(offset, write_dat, write_oob);
}
}
for (page = 0; page < page_per_block; page++)
{
if (page != error_page)
{
nand_read_page_bmt(PAGE_ADDR(error_block) + page, dat_buf, oob_buf);
if (is_page_used(dat_buf, oob_buf))
{
if (error_block < system_block_count)
{
set_bad_index_to_oob(oob_buf, error_block);
}
MSG(INIT, "\tmigrate page 0x%x to page 0x%x\n", PAGE_ADDR(error_block) + page, PAGE_ADDR(to_index) + page);
if (!nand_write_page_bmt(PAGE_ADDR(to_index) + page, dat_buf, oob_buf))
{
MSG(INIT, "Write to page 0x%x fail\n", PAGE_ADDR(to_index) + page);
mark_block_bad_bmt(OFFSET(to_index));
return migrate_from_bad(offset, write_dat, write_oob);
}
}
}
}
MSG(INIT, "Migrate from 0x%x to 0x%x done!\n", error_block, to_index);
return to_index;
}
/*******************************************************************
* [BMT Interface]
*
* Description:
* Update BMT.
*
* Parameter:
* offset: update block/page offset.
* reason: update reason, see update_reason_t for reason.
* dat/oob: data and oob buffer for write fail.
*
* Return:
* Return true for success, and false for failure.
*******************************************************************/
bool update_bmt(u32 offset, update_reason_t reason, u8 *dat, u8 *oob)
{
int map_index;
int orig_bad_block = -1;
// int bmt_update_index;
int i;
int bad_index = offset / BLOCK_SIZE_BMT;
if (bad_index < reserve_block)
{
// MSG(INIT, "Update in reserve region\n");
if (reason == UPDATE_UNMAPPED_BLOCK)
{
return false;
}
else if (reason == UPDATE_WRITE_FAIL)
{
// MSG(INIT, "Write preloader/DSP_BL fail, SD update??\n");
if (!(map_index = migrate_from_bad(offset, dat, oob)))
{
MSG(INIT, "migrate fail\n");
return false;
}
}
else if (reason == UPDATE_ERASE_FAIL)
{
// MSG(INIT, "Erase preloader/DSP_BL fail, SD update??\n");
if (!(map_index = find_available_block_reserve(bad_index)))
return false;
}
mark_block_bad_bmt(offset);
return map_reserve_region(reserve_block);
}
if (reason == UPDATE_WRITE_FAIL)
{
MSG(INIT, "Write fail, need to migrate\n");
if ( !(map_index = migrate_from_bad(offset, dat, oob)) )
{
MSG(INIT, "migrate fail\n");
return false;
}
}
else
{
if ( !(map_index = find_available_block(false)) )
{
MSG(INIT, "Cannot find block in pool\n");
return false;
}
}
// now let's update BMT
if (bad_index >= system_block_count) // mapped block become bad, find original bad block
{
for (i = 0; i < bmt_block_count; i++)
{
if (bmt.table[i].mapped_index == bad_index)
{
orig_bad_block = bmt.table[i].bad_index;
break;
}
}
// bmt.bad_count++;
MSG(INIT, "Mapped block becomes bad, orig bad block is 0x%x\n", orig_bad_block);
bmt.table[i].mapped_index = map_index;
}
else
{
bmt.table[bmt.mapped_count].mapped_index = map_index;
bmt.table[bmt.mapped_count].bad_index = bad_index;
bmt.mapped_count++;
}
memset(oob_buf, 0xFF, sizeof(oob_buf));
fill_nand_bmt_buffer(&bmt, dat_buf, oob_buf);
if (!write_bmt_to_flash(dat_buf, oob_buf))
return false;
mark_block_bad_bmt(offset);
return true;
}