From df08f747749b15b72a8dc953b006ace806c4b2d1 Mon Sep 17 00:00:00 2001 From: Johan Jonker Date: Mon, 13 Mar 2023 01:29:05 +0100 Subject: [PATCH] mtd: nand: raw: rockchip_nfc: fix oobfree offset and description The MTD framework reserves 1 or 2 bytes for the bad block marker depending on the bus size. The rockchip_nfc driver currently only supports a 8 bit bus, but reserves standard 2 bytes for the BBM. The first free OOB byte is therefore OOB2 at offset 2. Page address(PA) bytes are moved to the last 4 positions before ECC. Update the description for U-boot. Signed-off-by: Johan Jonker Reviewed-by: Kever Yang --- drivers/mtd/nand/raw/rockchip_nfc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/nand/raw/rockchip_nfc.c b/drivers/mtd/nand/raw/rockchip_nfc.c index 25e0497..5fcf6a6 100644 --- a/drivers/mtd/nand/raw/rockchip_nfc.c +++ b/drivers/mtd/nand/raw/rockchip_nfc.c @@ -487,10 +487,10 @@ static int rk_nfc_write_page_raw(struct mtd_info *mtd, * * BBM OOB1 OOB2 OOB3 |......| PA0 PA1 PA2 PA3 * - * The rk_nfc_ooblayout_free() function already has reserved - * these 4 bytes with: + * The oobfree structure already has reserved these 4 bytes + * together with 2 bytes for BBM by reducing it's length: * - * oob_region->offset = NFC_SYS_DATA_SIZE + 2; + * oobfree[0].length = rknand->metadata_size - NFC_SYS_DATA_SIZE - 2; */ if (!i) memcpy(rk_nfc_oob_ptr(chip, i), @@ -867,7 +867,7 @@ static int rk_nfc_ecc_init(struct rk_nfc *nfc, struct nand_chip *chip) ecc->layout->eccpos[i] = rknand->metadata_size + i; ecc->layout->oobfree[0].length = rknand->metadata_size - NFC_SYS_DATA_SIZE - 2; - ecc->layout->oobfree[0].offset = NFC_SYS_DATA_SIZE + 2; + ecc->layout->oobfree[0].offset = 2; return 0; } -- 2.7.4