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| author | Stefan Riedmueller <s.riedmueller@phytec.de> | 2021-03-30 08:50:39 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2021-04-01 10:24:14 +0200 |
| commit | 0e18518c1548f22602a9a9e1a2a3d2ee1cb47724 (patch) | |
| tree | 2dba4f0423419b440e2b76412740ee62be4c93e2 | |
| parent | 60d0fbde61ee5a19eb443a057027a004d07a3a29 (diff) | |
| download | barebox-0e18518c1548f22602a9a9e1a2a3d2ee1cb47724.tar.gz barebox-0e18518c1548f22602a9a9e1a2a3d2ee1cb47724.tar.xz | |
mtd: nand_msx: Implement ooblayout ops
The default ooblayout ops do not work on nand_mxs devices and can lead
to an unresponsible system when doing a 'nand -i' on that device.
Thus implement the ooblayout ops for the nand_mxs driver separately.
Since writing the oob area is not supported simply return the whole oob
area as ecc.
Signed-off-by: Stefan Riedmueller <s.riedmueller@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | drivers/mtd/nand/nand_mxs.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_mxs.c b/drivers/mtd/nand/nand_mxs.c index 96ae71364e..285ae3c121 100644 --- a/drivers/mtd/nand/nand_mxs.c +++ b/drivers/mtd/nand/nand_mxs.c @@ -269,6 +269,33 @@ static void mxs_nand_return_dma_descs(struct mxs_nand_info *info) info->desc_index = 0; } +/* + * We don't support writing the oob area so simply return the whole oob + * as ECC. + */ +static int mxs_nand_ooblayout_ecc(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + if (section) + return -ERANGE; + + oobregion->offset = 0; + oobregion->length = mtd->oobsize; + + return 0; +} + +static int mxs_nand_ooblayout_free(struct mtd_info *mtd, int section, + struct mtd_oob_region *oobregion) +{ + return -ERANGE; +} + +static const struct mtd_ooblayout_ops mxs_nand_ooblayout_ops = { + .ecc = mxs_nand_ooblayout_ecc, + .free = mxs_nand_ooblayout_free, +}; + static uint32_t mxs_nand_ecc_chunk_cnt(uint32_t page_data_size) { return page_data_size / MXS_NAND_CHUNK_DATA_CHUNK_SIZE; @@ -2218,6 +2245,8 @@ static int mxs_nand_probe(struct device_d *dev) if (err) goto err2; + mtd_set_ooblayout(mtd, &mxs_nand_ooblayout_ops); + mxs_nand_scan_bbt(chip); err = add_mtd_nand_device(mtd, "nand"); |