[v4,1/6] mtd: add a new field to mtd_info{}

Message ID 1376619009-8622-2-git-send-email-b32955@freescale.com
State Accepted
Commit c41a0582d59e3bc41978ac4a23e457d86ac7365f
Headers show

Commit Message

Huang Shijie Aug. 16, 2013, 2:10 a.m.
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 configrate
the BCH is part of the metadata. The kobs-ng can gets the ecc strength from
the sys node /sys/*/ecc_strength now. But it can not gets 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>
 include/linux/mtd/mtd.h |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)


diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index a5cf4e8..f9bfe52 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;