mx7dsabresd: enable DFU support

On the target board:

  => dfu 0 mmc 0

On the host PC:

  $ dfu-util -l

    Found DFU: [0525:a4a5] devnum=0, cfg=1, intf=0, alt=0, name="image"
    Found DFU: [0525:a4a5] devnum=0, cfg=1, intf=0, alt=1, name="u-boot"
    Found DFU: [0525:a4a5] devnum=0, cfg=1, intf=0, alt=2, name="bootimg"
    Found DFU: [0525:a4a5] devnum=0, cfg=1, intf=0, alt=3, name="rootfs"

  Update with a full SD image

  $ dfu-util -a image -D core-image-minimal-imx7dsabresd.sdcard

  Update u-boot only

  $ dfu-util -a u-boot -D u-boot.imx

Signed-off-by: Tzu-Jung Lee <roylee17@currantlabs.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>

include/configs/mx7dsabresd.h

@@ -69,8 +69,15 @@
 	"initrd_high=0xffffffff\0" \
 	"bootcmd_mfg=run mfgtool_args;bootz ${loadaddr} ${initrd_addr} ${fdt_addr};\0" \
 
+#define CONFIG_DFU_ENV_SETTINGS \
+	"dfu_alt_info=image raw 0 0x800000;"\
+		"u-boot raw 0 0x4000;"\
+		"bootimg part 0 1;"\
+		"rootfs part 0 2\0" \
+
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	CONFIG_MFG_ENV_SETTINGS \
+	CONFIG_DFU_ENV_SETTINGS \
 	"script=boot.scr\0" \
 	"image=zImage\0" \
 	"console=ttymxc0\0" \
@@ -192,4 +199,24 @@
 
 #define CONFIG_IMX_THERMAL
 
+#define CONFIG_CI_UDC
+#define CONFIG_USBD_HS
+#define CONFIG_USB_GADGET_DUALSPEED
+
+#define CONFIG_USB_GADGET
+#define CONFIG_CMD_USB_MASS_STORAGE
+#define CONFIG_USB_FUNCTION_MASS_STORAGE
+#define CONFIG_USB_GADGET_DOWNLOAD
+#define CONFIG_USB_GADGET_VBUS_DRAW	2
+
+#define CONFIG_G_DNL_VENDOR_NUM		0x0525
+#define CONFIG_G_DNL_PRODUCT_NUM	0xa4a5
+#define CONFIG_G_DNL_MANUFACTURER	"FSL"
+
+/* USB Device Firmware Update support */
+#define CONFIG_CMD_DFU
+#define CONFIG_USB_FUNCTION_DFU
+#define CONFIG_DFU_MMC
+#define CONFIG_DFU_RAM
+
 #endif	/* __CONFIG_H */