diff options
Diffstat (limited to 'recipes/linux/linux-2.6.29/micro2440/0006-S3C-Allow-the-machine-code-to-get-the-BBT-table-fro.patch')
| -rw-r--r-- | recipes/linux/linux-2.6.29/micro2440/0006-S3C-Allow-the-machine-code-to-get-the-BBT-table-fro.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/recipes/linux/linux-2.6.29/micro2440/0006-S3C-Allow-the-machine-code-to-get-the-BBT-table-fro.patch b/recipes/linux/linux-2.6.29/micro2440/0006-S3C-Allow-the-machine-code-to-get-the-BBT-table-fro.patch new file mode 100644 index 0000000000..f5064622a5 --- /dev/null +++ b/recipes/linux/linux-2.6.29/micro2440/0006-S3C-Allow-the-machine-code-to-get-the-BBT-table-fro.patch @@ -0,0 +1,49 @@ +From be7844e174757ecc8aae7eb0411a7a8801da3aa8 Mon Sep 17 00:00:00 2001 +From: Michel Pollet <buserror@gmail.com> +Date: Fri, 13 Mar 2009 18:16:48 +0000 +Subject: [PATCH] S3C: Allow the machine code to get the BBT table from NAND + +Added a flag to allow the machine code to tell the NAND +subsystem that it should try to pickup a BBT from the flash, +and also skip the NAND full scan at startup. +--- + arch/arm/plat-s3c/include/plat/nand.h | 4 +++- + drivers/mtd/nand/s3c2410.c | 7 +++++++ + 2 files changed, 10 insertions(+), 1 deletions(-) + +diff --git a/arch/arm/plat-s3c/include/plat/nand.h b/arch/arm/plat-s3c/include/plat/nand.h +index f4dcd14..0bcd5d0 100644 +--- a/arch/arm/plat-s3c/include/plat/nand.h ++++ b/arch/arm/plat-s3c/include/plat/nand.h +@@ -22,7 +22,9 @@ + */ + + struct s3c2410_nand_set { +- unsigned int disable_ecc : 1; ++ unsigned int disable_ecc : 1, ++ /* openmoko u-boot can create BBT */ ++ flash_bbt : 1; + + int nr_chips; + int nr_partitions; +diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c +index 8e375d5..f813ca9 100644 +--- a/drivers/mtd/nand/s3c2410.c ++++ b/drivers/mtd/nand/s3c2410.c +@@ -757,6 +757,13 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, + + if (set->disable_ecc) + chip->ecc.mode = NAND_ECC_NONE; ++ ++ /* If you use u-boot BBT creation code, specifying this flag will ++ * let the kernel fish out the BBT from the NAND, and also skip the ++ * full NAND scan that can take 1/2s or so. Little things... */ ++ if (set->flash_bbt) ++ chip->options |= NAND_USE_FLASH_BBT|NAND_SKIP_BBTSCAN; ++ + } + + /* s3c2410_nand_update_chip +-- +1.5.6.3 + |