MXC: Add large page oob layout for i.MX31 NAND controller.
Import the large page oob layout from Linux mxc_nand.c driver.
The CONFIG_SYS_NAND_LARGEPAGE option is used to activate
the large page oob layout. Run time detection is not supported
as this moment.
This has been tested on the i.MX31 PDK board with a large
page NAND device.
Signed-off-by: Magnus Lilja <lilja.magnus@gmail.com>
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index fc111b5..b2b612e 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -149,6 +149,13 @@
};
#endif
+static struct nand_ecclayout nand_hw_eccoob_largepage = {
+ .eccbytes = 20,
+ .eccpos = {6, 7, 8, 9, 10, 22, 23, 24, 25, 26,
+ 38, 39, 40, 41, 42, 54, 55, 56, 57, 58},
+ .oobfree = {{2, 4}, {11, 10}, {27, 10}, {43, 10}, {59, 5}, }
+};
+
#ifdef CONFIG_MX27
static int is_16bit_nand(void)
{
@@ -902,7 +909,12 @@
if (is_16bit_nand())
this->options |= NAND_BUSWIDTH_16;
+#ifdef CONFIG_SYS_NAND_LARGEPAGE
+ host->pagesize_2k = 1;
+ this->ecc.layout = &nand_hw_eccoob_largepage;
+#else
host->pagesize_2k = 0;
+#endif
return err;
}