arm: atmel: sama5d3: add spi spl boot support

Add SPI SPL boot support for sama5d3xek board.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

arch/arm/cpu/at91-common/spl.c

@@ -52,6 +52,8 @@ u32 spl_boot_device(void)
 {
 #ifdef CONFIG_SYS_USE_MMC
 	return BOOT_DEVICE_MMC1;
+#elif CONFIG_SYS_USE_SERIALFLASH
+	return BOOT_DEVICE_SPI;
 #endif
 	return BOOT_DEVICE_NONE;
 }

arch/arm/include/asm/arch-at91/spl.h

@@ -14,6 +14,8 @@ enum {
 	BOOT_DEVICE_MMC1,
 	BOOT_DEVICE_MMC2,
 	BOOT_DEVICE_MMC2_2,
+#elif CONFIG_SYS_USE_SERIALFLASH
+	BOOT_DEVICE_SPI,
 #endif
 };
 

board/atmel/sama5d3xek/sama5d3xek.c

@@ -307,6 +307,8 @@ void spl_board_init(void)
 {
 #ifdef CONFIG_SYS_USE_MMC
 	sama5d3xek_mci_hw_init();
+#elif CONFIG_SYS_USE_SERIALFLASH
+	at91_spi0_hw_init(1 << 0);
 #endif
 }
 

include/configs/sama5d3xek.h

@@ -258,6 +258,8 @@
 #define CONFIG_SPL_SERIAL_SUPPORT
 
 #define CONFIG_SPL_BOARD_INIT
+#define CONFIG_SYS_MONITOR_LEN		(512 << 10)
+
 #ifdef CONFIG_SYS_USE_MMC
 #define CONFIG_SPL_LDSCRIPT		arch/arm/cpu/at91-common/u-boot-spl.lds
 #define CONFIG_SPL_MMC_SUPPORT
@@ -267,6 +269,15 @@
 #define CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME	"u-boot.img"
 #define CONFIG_SPL_FAT_SUPPORT
 #define CONFIG_SPL_LIBDISK_SUPPORT
+
+#elif CONFIG_SYS_USE_SERIALFLASH
+#define CONFIG_SPL_SPI_SUPPORT
+#define CONFIG_SPL_SPI_FLASH_SUPPORT
+#define CONFIG_SPL_SPI_LOAD
+#define CONFIG_SPL_SPI_BUS		0
+#define CONFIG_SPL_SPI_CS		0
+#define CONFIG_SYS_SPI_U_BOOT_OFFS	0x8400
+
 #endif
 
 #endif