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OpenCloudOS-Kernel
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[MTD] [NAND] Add support for 4KiB pages. 

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Thomas Gleixner 2007-12-12 17:27:03 +01:00 committed by David Woodhouse
parent 45b0907614
commit 81ec5364a5
2 changed files with 20 additions and 2 deletions
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18
drivers/mtd/nand/nand_base.c
View File

@ -82,6 +82,20 @@ static struct nand_ecclayout nand_oob_64 = {
.length = 38}}
};
static struct nand_ecclayout nand_oob_128 = {
.eccbytes = 48,
.eccpos = {
80, 81, 82, 83, 84, 85, 86, 87,
88, 89, 90, 91, 92, 93, 94, 95,
96, 97, 98, 99, 100, 101, 102, 103,
104, 105, 106, 107, 108, 109, 110, 111,
112, 113, 114, 115, 116, 117, 118, 119,
120, 121, 122, 123, 124, 125, 126, 127},
.oobfree = {
{.offset = 2,
.length = 78}}
};
static int nand_get_device(struct nand_chip *chip, struct mtd_info *mtd,
int new_state);
@ -2638,6 +2652,9 @@ int nand_scan_tail(struct mtd_info *mtd)
case 64:
chip->ecc.layout = &nand_oob_64;
break;
case 128:
chip->ecc.layout = &nand_oob_128;
break;
default:
printk(KERN_WARNING "No oob scheme defined for "
"oobsize %d\n", mtd->oobsize);
@ -2767,6 +2784,7 @@ int nand_scan_tail(struct mtd_info *mtd)
break;
case 4:
case 8:
case 16:
mtd->subpage_sft = 2;
break;
}

4
include/linux/mtd/nand.h
View File

@ -43,8 +43,8 @@ extern void nand_wait_ready(struct mtd_info *mtd);
* is supported now. If you add a chip with bigger oobsize/page
* adjust this accordingly.
*/
#define NAND_MAX_OOBSIZE 64
#define NAND_MAX_PAGESIZE 2048
#define NAND_MAX_OOBSIZE 128
#define NAND_MAX_PAGESIZE 4096
/*
* Constants for hardware specific CLE/ALE/NCE function