static bool valid_bmt_data(phys_bmt_struct * phys_table)
{
int i;
u8 checksum = cal_bmt_checksum(phys_table, bmt_block_count);
// checksum correct?
if (phys_table->header.checksum != checksum)
{
MSG(INIT, "BMT Data checksum error: %x %x\n", phys_table->header.checksum, checksum);
return false;
}
MSG(INIT, "BMT Checksum is: 0x%x\n", phys_table->header.checksum);
// block index correct?
for (i = 0; i < phys_table->header.mapped_count; i++)
{
if (phys_table->table[i].bad_index >= total_block_count || phys_table->table[i].mapped_index >= total_block_count || phys_table->table[i].mapped_index < system_block_count)
{
MSG(INIT, "index error: bad_index: %d, mapped_index: %d\n", phys_table->table[i].bad_index, phys_table->table[i].mapped_index);
return false;
}
}
// pass check, valid bmt.
MSG(INIT, "Valid BMT, version v%d\n", phys_table->header.version);
return true;
}
static void fill_nand_bmt_buffer(bmt_struct *bmt, u8 *dat, u8 *oob)
{
dump_bmt_info(bmt);
// fill phys_bmt_struct structure with bmt_struct
memset(&fnbb_phys_bmt, 0xFF, sizeof(fnbb_phys_bmt));
memcpy(fnbb_phys_bmt.header.signature, MAIN_SIGNATURE, SIGNATURE_SIZE);
fnbb_phys_bmt.header.version = BMT_VERSION;
fnbb_phys_bmt.header.mapped_count = bmt->mapped_count;
memcpy(fnbb_phys_bmt.table, bmt->table, sizeof(bmt_entry) * bmt_block_count);
fnbb_phys_bmt.header.checksum = cal_bmt_checksum(&fnbb_phys_bmt, bmt_block_count);
memcpy(dat + MAIN_SIGNATURE_OFFSET, &fnbb_phys_bmt, sizeof(fnbb_phys_bmt));
return;
}
