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Commit 440b1d73 authored by Mike Dunn's avatar Mike Dunn Committed by Artem Bityutskiy
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mtd: nand/docg4: reserve bb marker area in ecclayout 



Modify the nand_ecclayout to place the two bb marker bytes in the oob region
off-limits to the user.

Signed-off-by: default avatarMike Dunn <mikedunn@newsguy.com>
Acked-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: default avatarArtem Bityutskiy <artem.bityutskiy@linux.intel.com>
parent 5a90d41b

drivers/mtd/nand/docg4.c

+6 −4
Original line number Original line Diff line number Diff line
@@ -214,15 +214,17 @@ struct docg4_priv { 
#define DOCG4_FACTORY_BBT_PAGE 16 /* page where read-only factory bbt lives */

#define DOCG4_FACTORY_BBT_PAGE 16 /* page where read-only factory bbt lives */





/*

/*

 * Oob bytes 0 - 6 are available to the user.

 * Bytes 0, 1 are used as badblock marker.

 * Byte 7 is hamming ecc for first 7 bytes.  Bytes 8 - 14 are hw-generated ecc.

 * Bytes 2 - 6 are available to the user.

 * Byte 7 is hamming ecc for first 7 oob bytes only.

 * Bytes 8 - 14 are hw-generated ecc covering entire page + oob bytes 0 - 14.

 * Byte 15 (the last) is used by the driver as a "page written" flag.

 * Byte 15 (the last) is used by the driver as a "page written" flag.

 */

 */

static struct nand_ecclayout docg4_oobinfo = {

static struct nand_ecclayout docg4_oobinfo = {

	.eccbytes = 9,

	.eccbytes = 9,

	.eccpos = {7, 8, 9, 10, 11, 12, 13, 14, 15},

	.eccpos = {7, 8, 9, 10, 11, 12, 13, 14, 15},

	.oobavail = 7,

	.oobavail = 5,

	.oobfree = { {0, 7} }

	.oobfree = { {.offset = 2, .length = 5} }

};

};





/*

/*