[U-Boot] [PATCH 06/13] mxc nand: Access all ecc_status_result fields

Benoît Thébaudeau
2012-08-13T20:49:42Z

On the NFC IP 1.1, the 32-bit ecc_status_result value comes from 2
consecutive 16-bit registers. This patch reads all the fields of this value,
which makes a difference for 4-kiB NF pages.

Signed-off-by: Beno?t Th?baudeau <benoit.thebaudeau@advansee.com>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
---
.../drivers/mtd/nand/mxc_nand.c | 2 +-
.../include/fsl_nfc.h | 3 +--
.../nand_spl/nand_boot_fsl_nfc.c | 4 ++++
3 files changed, 6 insertions(+), 3 deletions(-)

diff --git u-boot-4d3c95f.orig/drivers/mtd/nand/mxc_nand.c u-boot-4d3c95f/drivers/mtd/nand/mxc_nand.c
index 62d8c6b..4564b25 100644
--- u-boot-4d3c95f.orig/drivers/mtd/nand/mxc_nand.c
+++ u-boot-4d3c95f/drivers/mtd/nand/mxc_nand.c
@@ -653,7 +653,7 @@ static int mxc_nand_correct_data(struct mtd_info *mtd, u_char *dat,
{
struct nand_chip *nand_chip = mtd->priv;
struct mxc_nand_host *host = nand_chip->priv;
- uint16_t ecc_status = readw(&host->regs->ecc_status_result);
+ uint32_t ecc_status = readl(&host->regs->ecc_status_result);
int subpages = mtd->writesize / nand_chip->subpagesize;
int pg2blk_shift = nand_chip->phys_erase_shift -
nand_chip->page_shift;
diff --git u-boot-4d3c95f.orig/include/fsl_nfc.h u-boot-4d3c95f/include/fsl_nfc.h
index 1c16c71..c248cef 100644
--- u-boot-4d3c95f.orig/include/fsl_nfc.h
+++ u-boot-4d3c95f/include/fsl_nfc.h
@@ -94,8 +94,7 @@ struct fsl_nfc_regs {
u16 flash_addr;
u16 flash_cmd;
u16 config;
- u16 ecc_status_result;
- u16 ecc_status_result2;
+ u32 ecc_status_result;
u16 spare_area_size;
u16 wrprot;
u16 reserved3[2];
diff --git u-boot-4d3c95f.orig/nand_spl/nand_boot_fsl_nfc.c u-boot-4d3c95f/nand_spl/nand_boot_fsl_nfc.c
index 842943c..4c5a7fe 100644
--- u-boot-4d3c95f.orig/nand_spl/nand_boot_fsl_nfc.c
+++ u-boot-4d3c95f/nand_spl/nand_boot_fsl_nfc.c
@@ -139,7 +139,11 @@ static void nfc_nand_data_output(void)

static int nfc_nand_check_ecc(void)
{
+#if defined(MXC_NFC_V1)
return readw(&nfc->ecc_status_result);
+#elif defined(MXC_NFC_V1_1)
+ return readl(&nfc->ecc_status_result);
+#endif
}

static void nfc_nand_read_page(unsigned int page_address)