+config USB_FUNCTION_MASS_STORAGE
+ bool "Enable USB mass storage gadget"
+ help
+ Enable mass storage protocol support in U-Boot. It allows exporting
+ the eMMC/SD card content to HOST PC so it can be mounted.
+
+config USB_FUNCTION_ROCKUSB
+ bool "Enable USB rockusb gadget"
+ help
+ Rockusb protocol is widely used by Rockchip SoC based devices. It can
+ read/write info, image to/from devices. This enables the USB part of
+ the rockusb gadget.for more detail about Rockusb protocol, please see
+ doc/README.rockusb
+
+config USB_FUNCTION_SDP
+ bool "Enable USB SDP (Serial Download Protocol)"
+ help
+ Enable Serial Download Protocol (SDP) device support in U-Boot. This
+ allows to download images into memory and execute (jump to) them
+ using the same protocol as implemented by the i.MX family's boot ROM.
+
+config USB_FUNCTION_THOR
+ bool "Enable USB THOR gadget"
+ help
+ Enable Tizen's THOR download protocol support in U-Boot. It
+ allows downloading images into memory and flash them to target device.
+
+endif # USB_GADGET_DOWNLOAD
+
+config USB_ETHER
+ bool "USB Ethernet Gadget"
+ depends on NET
+ default y if ARCH_SUNXI && USB_MUSB_GADGET
+ help
+ Creates an Ethernet network device through a USB peripheral
+ controller. This will create a network interface on both the device
+ (U-Boot) and the host (remote device) that can be used just like any
+ other nework interface.
+ It will bind on the peripheral USB controller, ignoring the USB hosts
+ controllers in the system.
+
+if USB_ETHER
+
+choice
+ prompt "USB Ethernet Gadget Model"
+ default USB_ETH_RNDIS
+ help
+ There is several models (protocols) to implement Ethernet over USB
+ devices. The main ones are Microsoft's RNDIS and USB's CDC-Ethernet
+ (also called CDC-ECM). RNDIS is obviously compatible with Windows,
+ while CDC-ECM is not. Most other operating systems support both, so
+ if inter-operability is a concern, RNDIS is to be preferred.
+
+config USB_ETH_CDC
+ bool "CDC-ECM Protocol"
+ help
+ CDC (Communications Device Class) is the standard for Ethernet over
+ USB devices. While there's several alternatives, the most widely used
+ protocol is ECM (Ethernet Control Model). However, compatibility with
+ Windows is not that great.