In message 40F4D16F.30607@magellan-technology.com you wrote:
Can I use the USB *device* port to load a binary image (uImage) into my development board?
Not without adding such driver support.
i.e. does u-boot support the USB DFU (Device Firmware Upgrade) protocol?
No.
I know that the AT91RM9200 has support for USB DFU in its internal boot ROM, but I'd like to use uboot to load the image via image from a file server - similar to the way I would do it with tftp.
On the SX1 board we used the USB port to implement a serial console interface; this allows for fast downloads using the standard serial "loadb" and "loads" commands (the "baudrate" parameter does not apply on such a port).
If I make a product that has a USB device interface, I'd like to be able to upgrade the firmware via that same USB link.
IMHO the probably easiest and most useful way is to implement a USB - serial console interface.
Best regards,
Wolfgang Denk