arm: mvebu: enable boot from NAND

Check if we are booting from NAND and let the bootrom
continue to load the rest of the bootloader

Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk>
Signed-off-by: Stefan Roese <sr@denx.de>

arch/arm/mach-mvebu/include/mach/soc.h

@@ -147,6 +147,7 @@
 #define BOOT_DEV_SEL_OFFS	4
 #define BOOT_DEV_SEL_MASK	(0x3f << BOOT_DEV_SEL_OFFS)
 
+#define BOOT_FROM_NAND		0x0A
 #define BOOT_FROM_UART		0x28
 #define BOOT_FROM_UART_ALT	0x3f
 #define BOOT_FROM_SPI		0x32

arch/arm/mach-mvebu/spl.c

@@ -45,6 +45,10 @@ static u32 get_boot_device(void)
 	boot_device = (val & BOOT_DEV_SEL_MASK) >> BOOT_DEV_SEL_OFFS;
 	debug("SAR_REG=0x%08x boot_device=0x%x\n", val, boot_device);
 	switch (boot_device) {
+#if defined(CONFIG_ARMADA_38X)
+	case BOOT_FROM_NAND:
+		return BOOT_DEVICE_NAND;
+#endif
 #ifdef CONFIG_SPL_MMC_SUPPORT
 	case BOOT_FROM_MMC:
 	case BOOT_FROM_MMC_ALT:
@@ -128,7 +132,15 @@ void board_init_f(ulong dummy)
 	 * SPL has no chance to receive this information. So we
 	 * need to return to the BootROM to enable this xmodem
 	 * UART download.
+	 *
+	 * If booting from NAND lets let the BootROM load the
+	 * rest of the bootloader.
 	 */
-	if (get_boot_device() == BOOT_DEVICE_UART)
-		return_to_bootrom();
+	switch (get_boot_device()) {
+		case BOOT_DEVICE_UART:
+#if defined(CONFIG_ARMADA_38X)
+		case BOOT_DEVICE_NAND:
+#endif
+			return_to_bootrom();
+	}
 }