From 99b17c08bca2810f5910b3027f1b9d82edf7a576 Mon Sep 17 00:00:00 2001 From: Roman Tereshonkov Date: Mon, 11 Apr 2011 12:52:01 +0300 Subject: mtd: onenand: add ecclayout and subpage_sft for non-flex 4KiB page onenand So as the ecclayout and suppage size for 4KiB page Flex- and none-Flex OneNAND are different the new values for none-Flex 4KiB page OneNAND memory are added. The introduced ecclayout and suppage size are based on specification 4Gib M-die OneNAND Flash (KFM4G16Q4M, KFN8G16Q4M). Rev. 1.3, Apr. 2010 For eccpos we expose only 64 bytes out of 72, for oobfree the spare area fields marked as "Managed by internal ECC logic for Logical Sector Number area" are used. Signed-off-by: Roman Tereshonkov Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse --- drivers/mtd/onenand/onenand_base.c | 46 +++++++++++++++++++++++++++++++++----- 1 file changed, 40 insertions(+), 6 deletions(-) (limited to 'drivers/mtd/onenand/onenand_base.c') diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 56a8b20..d27f93b 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -65,11 +65,11 @@ MODULE_PARM_DESC(otp, "Corresponding behaviour of OneNAND in OTP" " : 2 -> 1st Block lock" " : 3 -> BOTH OTP Block and 1st Block lock"); -/** - * onenand_oob_128 - oob info for Flex-Onenand with 4KB page - * For now, we expose only 64 out of 80 ecc bytes +/* + * flexonenand_oob_128 - oob info for Flex-Onenand with 4KB page + * For now, we expose only 64 out of 80 ecc bytes */ -static struct nand_ecclayout onenand_oob_128 = { +static struct nand_ecclayout flexonenand_oob_128 = { .eccbytes = 64, .eccpos = { 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, @@ -86,6 +86,35 @@ static struct nand_ecclayout onenand_oob_128 = { } }; +/* + * onenand_oob_128 - oob info for OneNAND with 4KB page + * + * Based on specification: + * 4Gb M-die OneNAND Flash (KFM4G16Q4M, KFN8G16Q4M). Rev. 1.3, Apr. 2010 + * + * For eccpos we expose only 64 bytes out of 72 (see struct nand_ecclayout) + * + * oobfree uses the spare area fields marked as + * "Managed by internal ECC logic for Logical Sector Number area" + */ +static struct nand_ecclayout onenand_oob_128 = { + .eccbytes = 64, + .eccpos = { + 7, 8, 9, 10, 11, 12, 13, 14, 15, + 23, 24, 25, 26, 27, 28, 29, 30, 31, + 39, 40, 41, 42, 43, 44, 45, 46, 47, + 55, 56, 57, 58, 59, 60, 61, 62, 63, + 71, 72, 73, 74, 75, 76, 77, 78, 79, + 87, 88, 89, 90, 91, 92, 93, 94, 95, + 103, 104, 105, 106, 107, 108, 109, 110, 111, + 119 + }, + .oobfree = { + {2, 3}, {18, 3}, {34, 3}, {50, 3}, + {66, 3}, {82, 3}, {98, 3}, {114, 3} + } +}; + /** * onenand_oob_64 - oob info for large (2KB) page */ @@ -4018,8 +4047,13 @@ int onenand_scan(struct mtd_info *mtd, int maxchips) */ switch (mtd->oobsize) { case 128: - this->ecclayout = &onenand_oob_128; - mtd->subpage_sft = 0; + if (FLEXONENAND(this)) { + this->ecclayout = &flexonenand_oob_128; + mtd->subpage_sft = 0; + } else { + this->ecclayout = &onenand_oob_128; + mtd->subpage_sft = 2; + } break; case 64: this->ecclayout = &onenand_oob_64; -- cgit v1.1