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path: root/target/linux/generic/files/drivers/mtd/nand/mtk_bmt.c
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* kernel: mtk_bmt: skip bitflip check if threshold isn't setChuanhong Guo2022-04-09
| | | | | | kernel spi-nand driver leaves this field empty and let mtd set it later. Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
* kernel: mtk_bmt: add debugfs file to attempt repair of remapped sectorsFelix Fietkau2022-03-25
| | | | | | This can be used for sectors that are not physically damaged Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: add support for mediatek NMBM flash mapping supportFelix Fietkau2022-03-25
| | | | | | | This NAND flash remapping method is used on newer MediaTek devices with NAND flash. Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: mtk_bmt: on error, do not attempt to remap out-of-range blocksFelix Fietkau2022-03-25
| | | | | | Pass errors to caller instead Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: mtk_bmt: allow get_mapping_block to return an errorFelix Fietkau2022-03-25
| | | | | | | Used by the mapping implementation to indicate that no backing block is available Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: split up mtk_bmt driver codeFelix Fietkau2022-03-25
| | | | | | Keep a separate source file per variant Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: mtk_bmt: add support for the bbt format used on mt7621Felix Fietkau2022-01-13
| | | | | | | | | 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>
* kernel: mtk_bmt: add abstraction for supporting other formatsFelix Fietkau2022-01-13
| | | | | | Preparation for supporting remapping on MT7621 Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: mtk_bmt: remap blocks after reaching bitflip thresholdFelix Fietkau2022-01-13
| | | | | | This ensures that blocks are remapped before data becomes corrupt Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: mtk_bmt: pass number of bitflips on read to the callerFelix Fietkau2022-01-13
| | | | Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: mtk_bmt: add support for limiting range of remappingFelix Fietkau2022-01-13
| | | | | | | | 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>
* kernel: mtk_bmt: extend debug interfaceFelix Fietkau2022-01-13
| | | | | | | 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>
* kernel: mtk_bmt: fix remapping after read/write failureFelix Fietkau2022-01-13
| | | | | | Copy from the previous block in order to preserve existing data Signed-off-by: Felix Fietkau <nbd@nbd.name>
* kernel: move mediatek BMT support patch to generic patchesFelix Fietkau2022-01-13
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>
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