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authorHuang Shijie <b32955@freescale.com>2013-08-16 10:10:04 +0800
committerDavid Woodhouse <David.Woodhouse@intel.com>2013-08-30 21:37:01 +0100
commitc41a0582d59e3bc41978ac4a23e457d86ac7365f (patch)
tree57a4973fa6bf6539e0ebcbe852fc5de333c7097b
parentdaae74cad4bcd4566fcb82477e33c42bcdaa86e8 (diff)
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mtd: add a new ecc_step_size field to mtd_info{}
In order to implement the NAND boot for some Freescale's chips, such as imx23/imx28/imx50/imx6, we use a tool (called kobs-ng) to burn the uboot and some metadata to nand chip. And the ROM code will use the metadata to configrate the BCH, and to find the uboot. The ECC information(ecc step size, ecc strength) which is used to configrure the BCH is part of the metadata. The kobs-ng can get the ecc strength from the sys node /sys/*/ecc_strength now. But it can not get the ecc step size. This patch adds a new field to store the ecc step size in mtd_info{}, and it makes preparation for the next patches. Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
-rw-r--r--include/linux/mtd/mtd.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index a5cf4e8d6818..f9bfe526d310 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -173,6 +173,9 @@ struct mtd_info {
/* ECC layout structure pointer - read only! */
struct nand_ecclayout *ecclayout;
+ /* the ecc step size. */
+ unsigned int ecc_step_size;
+
/* max number of correctible bit errors per ecc step */
unsigned int ecc_strength;