openwrt/target/linux/s3c24xx/patches-2.6.24/1009-s3c2410-bbt.patch.patch

From 8e01740813dc6a1d804e61d303549b04e160d153 Mon Sep 17 00:00:00 2001
From: mokopatches <mokopatches@openmoko.org>
Date: Fri, 4 Apr 2008 11:30:37 +0100
Subject: [PATCH] s3c2410-bbt.patch
 [PATCH] Add Kconfig option to enable NAND bad-block-table support for s3c2410

This patch adds a new CONFIG_MTD_NAND_S3C2410_BBT which, if enabled,
asks the mtd NAND core to use a bad-block table.

Signed-off-by: Harald Welte <laforge@openmoko.org>
---
 drivers/mtd/nand/s3c2410.c      |    6 +++++-
 include/asm-arm/plat-s3c/nand.h |    3 +++
 2 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index 355de78..770306c 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -612,9 +612,13 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
 	chip->select_chip  = s3c2410_nand_select_chip;
 	chip->chip_delay   = 50;
 	chip->priv	   = nmtd;
-	chip->options	   = 0;
 	chip->controller   = &info->controller;
 
+	if (set->flags & S3C2410_NAND_BBT)
+		chip->options	   = NAND_USE_FLASH_BBT;
+	else
+		chip->options	   = 0;
+
 	switch (info->cpu_type) {
 	case TYPE_S3C2410:
 		chip->IO_ADDR_W = regs + S3C2410_NFDATA;
diff --git a/include/asm-arm/plat-s3c/nand.h b/include/asm-arm/plat-s3c/nand.h
index 8816f7f..cb87f9e 100644
--- a/include/asm-arm/plat-s3c/nand.h
+++ b/include/asm-arm/plat-s3c/nand.h
@@ -21,9 +21,12 @@
  * partitions	 = mtd partition list
 */
 
+#define S3C2410_NAND_BBT	0x0001
+
 struct s3c2410_nand_set {
 	int			nr_chips;
 	int			nr_partitions;
+	unsigned int		flags;
 	char			*name;
 	int			*nr_map;
 	struct mtd_partition	*partitions;
-- 
1.5.6.5