armv8/ls2085ardb: Enable NAND SPL support

Enable NAND boot support using SPL framework. To boot from
NAND, either use DIP switches on board, or "qixis_reset nand"
command. Details of forming NAND image can be found in README.

Signed-off-by: Scott Wood <scottwood@freescale.com>
[York Sun: Remove +S from defconfig after commit 252ed872]
Signed-off-by: York Sun <yorksun@freescale.com>

arch/arm/Kconfig

@@ -726,6 +726,7 @@ config TARGET_LS2085ARDB
 	bool "Support ls2085ardb"
 	select ARM64
 	select ARMV8_MULTIENTRY
+	select SUPPORT_SPL
 	help
 	  Support for Freescale LS2085ARDB platform.
 	  The LS2085A Reference design board (RDB) is a high-performance

arch/arm/cpu/armv8/fsl-lsch3/README

@@ -133,3 +133,16 @@ The u-boot image should be written to match SRC_ADDR, in above example 0x20000.
 nand write <u-boot image in memory> 200000 <size of u-boot image>
 
 With these two images in NAND device, the board can boot from NAND.
+
+Another example for RDB boards,
+
+1) CCSR 4-byte write to 0x00e00404, data=0x00000000
+2) CCSR 4-byte write to 0x00e00400, data=0x1800a000
+3) Block Copy: SRC=0x0119, SRC_ADDR=0x00080000, DEST_ADDR=0x1800a000,
+BLOCK_SIZE=0x00014000
+
+nand write <rcw image in memory> 0 <size of rcw image>
+nand write <u-boot image in memory> 80000 <size of u-boot image>
+
+Notice the difference from QDS is SRC, SRC_ADDR and the offset of u-boot image
+to match board NAND device with 4KB/page, block size 512KB.

board/freescale/ls2085ardb/MAINTAINERS

@@ -5,3 +5,4 @@ F:	board/freescale/ls2085ardb/
 F:	board/freescale/ls2085a/ls2085ardb.c
 F:	include/configs/ls2085ardb.h
 F:	configs/ls2085ardb_defconfig
+F:	configs/ls2085ardb_nand_defconfig

board/freescale/ls2085ardb/ddr.c

@@ -147,9 +147,13 @@ phys_size_t initdram(int board_type)
 {
 	phys_size_t dram_size;
 
+#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+	return fsl_ddr_sdram_size();
+#else
 	puts("Initializing DDR....using SPD\n");
 
 	dram_size = fsl_ddr_sdram();
+#endif
 
 	return dram_size;
 }

configs/ls2085ardb_nand_defconfig

@@ -0,0 +1,4 @@
+CONFIG_SYS_EXTRA_OPTIONS="SYS_FSL_DDR4,NAND"
+CONFIG_SPL=y
+CONFIG_ARM=y
+CONFIG_TARGET_LS2085ARDB=y

include/configs/ls2085ardb.h

@@ -139,11 +139,13 @@ unsigned long get_board_sys_clk(void);
 #define QIXIS_LBMAP_SHIFT		0
 #define QIXIS_LBMAP_DFLTBANK		0x00
 #define QIXIS_LBMAP_ALTBANK		0x04
+#define QIXIS_LBMAP_NAND		0x09
 #define QIXIS_RST_CTL_RESET		0x31
 #define QIXIS_RST_CTL_RESET_EN		0x30
 #define QIXIS_RCFG_CTL_RECONFIG_IDLE	0x20
 #define QIXIS_RCFG_CTL_RECONFIG_START	0x21
 #define QIXIS_RCFG_CTL_WATCHDOG_ENBLE	0x08
+#define QIXIS_RCW_SRC_NAND		0x119
 #define	QIXIS_RST_FORCE_MEM		0x01
 
 #define CONFIG_SYS_CSPR3_EXT	(0x0)
@@ -169,6 +171,33 @@ unsigned long get_board_sys_clk(void);
 					FTIM2_GPCM_TWP(0x3E))
 #define CONFIG_SYS_CS3_FTIM3		0x0
 
+#if defined(CONFIG_SPL) && defined(CONFIG_NAND)
+#define CONFIG_SYS_CSPR2_EXT		CONFIG_SYS_NOR0_CSPR_EXT
+#define CONFIG_SYS_CSPR2		CONFIG_SYS_NOR0_CSPR_EARLY
+#define CONFIG_SYS_CSPR2_FINAL		CONFIG_SYS_NOR0_CSPR
+#define CONFIG_SYS_AMASK2		CONFIG_SYS_NOR_AMASK
+#define CONFIG_SYS_CSOR2		CONFIG_SYS_NOR_CSOR
+#define CONFIG_SYS_CS2_FTIM0		CONFIG_SYS_NOR_FTIM0
+#define CONFIG_SYS_CS2_FTIM1		CONFIG_SYS_NOR_FTIM1
+#define CONFIG_SYS_CS2_FTIM2		CONFIG_SYS_NOR_FTIM2
+#define CONFIG_SYS_CS2_FTIM3		CONFIG_SYS_NOR_FTIM3
+#define CONFIG_SYS_CSPR0_EXT		CONFIG_SYS_NAND_CSPR_EXT
+#define CONFIG_SYS_CSPR0		CONFIG_SYS_NAND_CSPR
+#define CONFIG_SYS_AMASK0		CONFIG_SYS_NAND_AMASK
+#define CONFIG_SYS_CSOR0		CONFIG_SYS_NAND_CSOR
+#define CONFIG_SYS_CS0_FTIM0		CONFIG_SYS_NAND_FTIM0
+#define CONFIG_SYS_CS0_FTIM1		CONFIG_SYS_NAND_FTIM1
+#define CONFIG_SYS_CS0_FTIM2		CONFIG_SYS_NAND_FTIM2
+#define CONFIG_SYS_CS0_FTIM3		CONFIG_SYS_NAND_FTIM3
+
+#define CONFIG_ENV_IS_IN_NAND
+#define CONFIG_ENV_OFFSET		(2048 * 1024)
+#define CONFIG_ENV_SECT_SIZE		0x20000
+#define CONFIG_ENV_SIZE			0x2000
+#define CONFIG_SPL_PAD_TO		0x80000
+#define CONFIG_SYS_NAND_U_BOOT_OFFS	(1024 * 1024)
+#define CONFIG_SYS_NAND_U_BOOT_SIZE	(512 * 1024)
+#else
 #define CONFIG_SYS_CSPR0_EXT		CONFIG_SYS_NOR0_CSPR_EXT
 #define CONFIG_SYS_CSPR0		CONFIG_SYS_NOR0_CSPR_EARLY
 #define CONFIG_SYS_CSPR0_FINAL		CONFIG_SYS_NOR0_CSPR
@@ -187,6 +216,12 @@ unsigned long get_board_sys_clk(void);
 #define CONFIG_SYS_CS2_FTIM2		CONFIG_SYS_NAND_FTIM2
 #define CONFIG_SYS_CS2_FTIM3		CONFIG_SYS_NAND_FTIM3
 
+#define CONFIG_ENV_IS_IN_FLASH
+#define CONFIG_ENV_ADDR			(CONFIG_SYS_FLASH_BASE + 0x200000)
+#define CONFIG_ENV_SECT_SIZE		0x20000
+#define CONFIG_ENV_SIZE			0x2000
+#endif
+
 /* Debug Server firmware */
 #define CONFIG_SYS_DEBUG_SERVER_FW_IN_NOR
 #define CONFIG_SYS_DEBUG_SERVER_FW_ADDR	0x580D00000ULL
@@ -229,11 +264,6 @@ unsigned long get_board_sys_clk(void);
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS 3
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS 5
 
-#define CONFIG_ENV_IS_IN_FLASH
-#define CONFIG_ENV_ADDR			(CONFIG_SYS_FLASH_BASE + 0x200000)
-#define CONFIG_ENV_SECT_SIZE		0x20000
-#define CONFIG_ENV_SIZE			0x2000
-
 #define CONFIG_FSL_MEMAC
 #define CONFIG_PCI		/* Enable PCIE */
 #define CONFIG_PCIE_LAYERSCAPE	/* Use common FSL Layerscape PCIe code */