_oob_read returns number of bitflips on success while
bbt_nand_read should return 0.
Fixes: 2d49e49b18 ("mediatek: bmt: use generic mtd api")
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
(cherry picked from commit f183ce35b8ea2fd991ac489fb223b09a1ecb4db0)
kernel spi-nand driver leaves this field empty and let mtd set it later.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
(cherry-picked from commit 6fa50e26e7c1221085d8e71cde7e9148c540c752)
This can be used for sectors that are not physically damaged
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit 2a8a333ee96fb0c8d9875abf9fcd5c412f4b19ae)
This NAND flash remapping method is used on newer MediaTek devices with NAND
flash.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit 06382d1af7b2c5afcde605db436522326fbf5467)
Copy from the previously mapped block (in case it was remapped already)
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit 7d1e2be1605eda85e1a607a3d3ddefed1b961d3d)
Used by the mapping implementation to indicate that no backing block is
available
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit b4c7f8c5f7a2dab76fe90849e112c6bd8f80ab19)
Keep a separate source file per variant
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry-picked from commit 601c7b4adb0f91005a8755bf9575c68ac623cc33)
This does not have spare blocks for remapping, and it is also not suitable
for random write access. It only skips over bad blocks on linear writes of an
image to a partition. As such, it is really only suitable for the kernel
partition, or other partitions with mostly static data
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This can be used to support ubi on top of mtk_bmt without reflashing the
boot loader. The boot loader + factory + kernel area is covered, while the
rest is passed through as-is
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Add support for showing remapped blocks and garbage collecting old
remapped blocks triggered by using the mark_good/mark_bad files
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Preparation for supporting BMT on MT7621. Move source files to the files/
subdirectory in order to simplify maintenance
Signed-off-by: Felix Fietkau <nbd@nbd.name>
