[U-Boot] [PATCH 2/4] sunxi: nand: Add board configuration options

[Piotr Zierhoffer]

From: Piotr Zierhoffer <piotr.zierhoffer at cs.put.poznan.pl>

When SUNXI_NAND option is selected in config, set some configuration
options for sunxi NAND.

This commit also introduces the configurable options in Kconfig.

Signed-off-by: Peter Gielda <pgielda at antmicro.com>
Signed-off-by: Tomasz Gorochowik <tgorochowik at antmicro.com>
Signed-off-by: Mateusz Holenko <mholenko at antmicro.com>
Signed-off-by: Piotr Zierhoffer <pzierhoffer at antmicro.com>
---

 board/sunxi/Kconfig            | 10 ++++++++++
 include/configs/sunxi-common.h | 11 +++++++++++
 2 files changed, 21 insertions(+)

diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 2a1cd3c..3b76d64 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -227,6 +227,16 @@ config OLD_SUNXI_KERNEL_COMPAT
 	Set this to enable various workarounds for old kernels, this results in
 	sub-optimal settings for newer kernels, only enable if needed.
 
+config SUNXI_NAND
+	bool "Support for NAND on Allwinner A20"
+	depends on MACH_SUN7I
+	---help---
+	Enable support for internal NAND. This option allows U-Boot to read from
+	sunxi NAND using DMA transfers. It also adds the a20_nandread command
+	that allows user to transfer a specified amount of data from NAND to
+	memory. Both SPL and full U-Boot driver are enabled. Writing is not
+	supported.
+
 config MMC0_CD_PIN
 	string "Card detect pin for mmc0"
 	default ""
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index 9576bc1..83922ab 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -139,6 +139,17 @@
 #define CONFIG_INITRD_TAG
 #define CONFIG_SERIAL_TAG
 
+#if defined(CONFIG_SUNXI_NAND)
+#define CONFIG_SPL_NAND_DRIVERS
+#define CONFIG_SPL_NAND_SUPPORT
+#define CONFIG_CMD_SPL_WRITE_SIZE 0x000400 /* 1024 byte */
+
+#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS 0x280000
+#define CONFIG_SYS_NAND_U_BOOT_OFFS 0x008000
+#define CONFIG_SYS_NAND_PAGE_SIZE 0x002000 /* 8kb*/
+#define CONFIG_SUNXI_ECC_STRENGTH 40
+#endif
+
 /* mmc config */
 #if !defined(CONFIG_UART0_PORT_F)
 #define CONFIG_MMC
-- 
2.3.6