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Commit 0c78e93b authored by Armando Visconti's avatar Armando Visconti Committed by David Woodhouse
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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: default avatarArmando Visconti <armando.visconti@st.com>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 753e0139

drivers/mtd/nand/fsmc_nand.c

+40 −0
Original line number Diff line number Diff line
@@ -129,6 +129,42 @@ 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
@@ -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;