dra7x: boot: add dfu bootmode support

This patch enables the DFU boot mode support
for dra7x platform.

Signed-off-by: Ravi Babu <ravibabu@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>

arch/arm/cpu/armv7/omap-common/boot-common.c

@@ -90,6 +90,11 @@ void save_omap_boot_params(void)
 		case BOOT_DEVICE_CPGMAC:
 			sys_boot_device = 1;
 			break;
+#endif
+#if defined(BOOT_DEVICE_DFU) && !defined(CONFIG_SPL_DFU_SUPPORT)
+		case BOOT_DEVICE_DFU:
+			sys_boot_device = 1;
+			break;
 #endif
 	}
 

arch/arm/include/asm/arch-omap5/spl.h

@@ -20,7 +20,7 @@
 #define BOOT_DEVICE_QSPI_1	0x0A
 #define BOOT_DEVICE_QSPI_4	0x0B
 #define BOOT_DEVICE_UART	0x43
-#define BOOT_DEVICE_USB		0x45
+#define BOOT_DEVICE_DFU		0x45
 
 #define MMC_BOOT_DEVICES_START	BOOT_DEVICE_MMC1
 #define MMC_BOOT_DEVICES_END	BOOT_DEVICE_MMC2_2

common/spl/spl.c

@@ -174,7 +174,7 @@ __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
 # define CONFIG_SPL_LOAD_FIT_ADDRESS	0
 #endif
 
-#ifdef CONFIG_SPL_RAM_DEVICE
+#if defined(CONFIG_SPL_RAM_DEVICE) || defined(CONFIG_SPL_DFU_SUPPORT)
 static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
 			       ulong count, void *buf)
 {
@@ -312,6 +312,9 @@ struct boot_device_name boot_name_table[] = {
 #ifdef CONFIG_SPL_USB_SUPPORT
 	{ BOOT_DEVICE_USB, "USB" },
 #endif
+#ifdef CONFIG_SPL_DFU_SUPPORT
+	{ BOOT_DEVICE_DFU, "USB DFU" },
+#endif
 #ifdef CONFIG_SPL_SATA_SUPPORT
 	{ BOOT_DEVICE_SATA, "SATA" },
 #endif
@@ -398,6 +401,11 @@ static int spl_load_image(u32 boot_device)
 	case BOOT_DEVICE_USB:
 		return spl_usb_load_image();
 #endif
+#ifdef CONFIG_SPL_DFU_SUPPORT
+	case BOOT_DEVICE_DFU:
+		spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
+		return spl_ram_load_image();
+#endif
 #ifdef CONFIG_SPL_SATA_SUPPORT
 	case BOOT_DEVICE_SATA:
 		return spl_sata_load_image();