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kernel: add support for mediatek NMBM flash mapping support

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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 06382d1af7)
This commit is contained in:
Felix Fietkau
2022-03-10 15:31:25 +01:00
parent 737ee934d2
commit bb5d415b19
4 changed files with 2361 additions and 4 deletions
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9
target/linux/generic/files/drivers/mtd/nand/mtk_bmt.h
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@@ -23,6 +23,9 @@ struct mtk_bmt_ops {
int (*debug)(void *data, u64 val);
};
struct bbbt;
struct nmbm_instance;
struct bmt_desc {
struct mtd_info *mtd;
unsigned char *bbt_buf;
@@ -38,7 +41,10 @@ struct bmt_desc {
const struct mtk_bmt_ops *ops;
struct bbbt *bbt;
union {
struct bbbt *bbt;
struct nmbm_instance *ni;
};
struct dentry *debugfs_dir;
@@ -70,6 +76,7 @@ struct bmt_desc {
extern struct bmt_desc bmtd;
extern const struct mtk_bmt_ops mtk_bmt_v2_ops;
extern const struct mtk_bmt_ops mtk_bmt_bbt_ops;
extern const struct mtk_bmt_ops mtk_bmt_nmbm_ops;
static inline u32 blk_pg(u16 block)
{