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authorArmando Visconti <armando.visconti@st.com>2012-03-07 17:00:55 +0530
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-03-27 00:50:00 +0100
commit0c78e93b44f39d4e5dfd4ebfc529cd74ac2a9bbb (patch)
tree80c4373f5a8155be4ad16a5f3044a7156a6666ae /drivers/mtd
parent753e0139e5569946056a8d5960111665a7f8f6f1 (diff)
downloadop-kernel-dev-0c78e93b44f39d4e5dfd4ebfc529cd74ac2a9bbb.zip
op-kernel-dev-0c78e93b44f39d4e5dfd4ebfc529cd74ac2a9bbb.tar.gz
mtd: fsmc: Support of 224-bytes OOB area length
The current patch is required to support EVALSPEAR1340CPU Revision 2 where a new (ONFI compliant) MT29F16G08 NAND flash from Micron is present. This NAND flash device defines a OOB area which is 224 bytes long (oobsize). Signed-off-by: Armando Visconti <armando.visconti@st.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/fsmc_nand.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c
index 5b217f2..4a018d0 100644
--- a/drivers/mtd/nand/fsmc_nand.c
+++ b/drivers/mtd/nand/fsmc_nand.c
@@ -130,6 +130,42 @@ static struct nand_ecclayout fsmc_ecc4_256_layout = {
};
/*
+ * ECC4 layout for NAND of pagesize 4096 bytes & OOBsize 224 bytes. 13*8 bytes
+ * of OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block & 118
+ * bytes are free for use.
+ */
+static struct nand_ecclayout fsmc_ecc4_224_layout = {
+ .eccbytes = 104,
+ .eccpos = { 2, 3, 4, 5, 6, 7, 8,
+ 9, 10, 11, 12, 13, 14,
+ 18, 19, 20, 21, 22, 23, 24,
+ 25, 26, 27, 28, 29, 30,
+ 34, 35, 36, 37, 38, 39, 40,
+ 41, 42, 43, 44, 45, 46,
+ 50, 51, 52, 53, 54, 55, 56,
+ 57, 58, 59, 60, 61, 62,
+ 66, 67, 68, 69, 70, 71, 72,
+ 73, 74, 75, 76, 77, 78,
+ 82, 83, 84, 85, 86, 87, 88,
+ 89, 90, 91, 92, 93, 94,
+ 98, 99, 100, 101, 102, 103, 104,
+ 105, 106, 107, 108, 109, 110,
+ 114, 115, 116, 117, 118, 119, 120,
+ 121, 122, 123, 124, 125, 126
+ },
+ .oobfree = {
+ {.offset = 15, .length = 3},
+ {.offset = 31, .length = 3},
+ {.offset = 47, .length = 3},
+ {.offset = 63, .length = 3},
+ {.offset = 79, .length = 3},
+ {.offset = 95, .length = 3},
+ {.offset = 111, .length = 3},
+ {.offset = 127, .length = 97}
+ }
+};
+
+/*
* ECC4 layout for NAND of pagesize 4096 bytes & OOBsize 128 bytes. 13*8 bytes
* of OOB size is reserved for ECC, Byte no. 0 & 1 reserved for bad block & 22
* bytes are free for use.
@@ -856,6 +892,10 @@ static int __init fsmc_nand_probe(struct platform_device *pdev)
nand->ecc.layout = &fsmc_ecc4_128_layout;
host->ecc_place = &fsmc_ecc4_lp_place;
break;
+ case 224:
+ nand->ecc.layout = &fsmc_ecc4_224_layout;
+ host->ecc_place = &fsmc_ecc4_lp_place;
+ break;
case 256:
nand->ecc.layout = &fsmc_ecc4_256_layout;
host->ecc_place = &fsmc_ecc4_lp_place;
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