zynqmp: nand: Add Nand driver support for zynqmp

Add nand driver support for zynqmp. The Nand
controller used in ZynqMP is Arasan Nand Flash
controller.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com>
[scottwood: Fix checkpatch warning]
Signed-off-by: Scott Wood <oss@buserror.net>

arch/arm/include/asm/arch-zynqmp/hardware.h

@@ -19,6 +19,8 @@
 #define ZYNQ_I2C_BASEADDR0	0xFF020000
 #define ZYNQ_I2C_BASEADDR1	0xFF030000
 
+#define ARASAN_NAND_BASEADDR	0xFF100000
+
 #define ZYNQMP_SATA_BASEADDR	0xFD0C0000
 
 #define ZYNQMP_USB0_XHCI_BASEADDR	0xFE200000

configs/xilinx_zynqmp_ep_defconfig

@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_ZYNQMP=y
 CONFIG_ZYNQMP_USB=y
+CONFIG_NAND_ARASAN=y
 CONFIG_SYS_TEXT_BASE=0x8000000
 CONFIG_DEFAULT_DEVICE_TREE="zynqmp-ep108"
 CONFIG_FIT=y

drivers/mtd/nand/Kconfig

@@ -71,6 +71,13 @@ config NAND_SUNXI
 	Enable support for NAND. This option allows SPL to read from
 	sunxi NAND using DMA transfers.
 
+config NAND_ARASAN
+	bool "Configure Arasan Nand"
+	help
+	  This enables Nand driver support for Arasan nand flash
+	  controller. This uses the hardware ECC for read and
+	  write operations.
+
 comment "Generic NAND options"
 
 # Enhance depends when converting drivers to Kconfig which use this config

include/configs/xilinx_zynqmp.h

@@ -105,6 +105,15 @@
 # define CONFIG_CMD_EXT4_WRITE
 #endif
 
+#ifdef CONFIG_NAND_ARASAN
+# define CONFIG_CMD_NAND
+# define CONFIG_CMD_NAND_LOCK_UNLOCK
+# define CONFIG_SYS_MAX_NAND_DEVICE	1
+# define CONFIG_SYS_NAND_SELF_INIT
+# define CONFIG_SYS_NAND_ONFI_DETECTION
+# define CONFIG_MTD_DEVICE
+#endif
+
 /* Miscellaneous configurable options */
 #define CONFIG_SYS_LOAD_ADDR		0x8000000