[U-Boot] [PATCH][v3] driver/nand: Add support of 16K SRAM for IFC 2.0

[Prabhakar Kushwaha]

Internal SRAM has been incresed from 8KB to 16KB for IFC cotroller ver 2.0.

Update the page offset calculation logic to support the same.

Signed-off-by: Prabhakar Kushwaha <prabhakar at freescale.com>
---
 Changes for v2: rebased the patch
 Changes for v3: Incorporated Scott's comments
 	- removed switch case
	- modified fsl_ifc_spl.c file 

 drivers/mtd/nand/fsl_ifc_nand.c |    4 +++-
 drivers/mtd/nand/fsl_ifc_spl.c  |    6 +++++-
 include/fsl_ifc.h               |    2 ++
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
index 280e14e..8b453cb 100644
--- a/drivers/mtd/nand/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/fsl_ifc_nand.c
@@ -23,7 +23,6 @@
 #define CONFIG_SYS_FSL_IFC_BANK_COUNT	4
 #endif
 
-#define FSL_IFC_V1_1_0	0x01010000
 #define MAX_BANKS	CONFIG_SYS_FSL_IFC_BANK_COUNT
 #define ERR_BYTE	0xFF /* Value returned for read bytes
 				when read failed */
@@ -1040,6 +1039,9 @@ static int fsl_ifc_chip_init(int devnum, u8 *addr)
 	if (ret)
 		return ret;
 
+	if (ver >= FSL_IFC_V2_0_0)
+		priv->bufnum_mask = (priv->bufnum_mask * 2) + 1;
+
 	ret = nand_scan_ident(mtd, 1, NULL);
 	if (ret)
 		return ret;
diff --git a/drivers/mtd/nand/fsl_ifc_spl.c b/drivers/mtd/nand/fsl_ifc_spl.c
index 5100772..e336cb1 100644
--- a/drivers/mtd/nand/fsl_ifc_spl.c
+++ b/drivers/mtd/nand/fsl_ifc_spl.c
@@ -97,7 +97,7 @@ int nand_spl_load_image(uint32_t offs, unsigned int uboot_size, void *vdst)
 	int pages_per_blk;
 	int blk_size;
 	int bad_marker = 0;
-	int bufnum_mask, bufnum;
+	int bufnum_mask, bufnum, ver = 0;
 
 	int csor, cspr;
 	int pos = 0;
@@ -130,6 +130,10 @@ int nand_spl_load_image(uint32_t offs, unsigned int uboot_size, void *vdst)
 			bad_marker = 5;
 	}
 
+	ver = ifc_in32(&ifc->ifc_rev);
+	if (ver >= FSL_IFC_V2_0_0)
+		bufnum_mask = (bufnum_mask * 2) + 1;
+
 	pages_per_blk =
 		32 << ((csor & CSOR_NAND_PB_MASK) >> CSOR_NAND_PB_SHIFT);
 
diff --git a/include/fsl_ifc.h b/include/fsl_ifc.h
index b353b04..11474b7 100644
--- a/include/fsl_ifc.h
+++ b/include/fsl_ifc.h
@@ -12,6 +12,8 @@
 #include <config.h>
 #include <common.h>
 
+#define FSL_IFC_V1_1_0	0x01010000
+#define FSL_IFC_V2_0_0	0x02000000
 
 #ifdef CONFIG_SYS_FSL_IFC_LE
 #define ifc_in32(a)       in_le32(a)
-- 
1.7.9.5