Hello All,
I'm personally interested in your USB-CDC implenmentation. And currently I'm trying to add DFU support for Beagleboard (TI OMAP3) which is also base on U-boot usb gadget. May quite similar to your work.
Have you all noticed the CDC branch of U-boot-usb ? It is derived from linux-2.6.27 usb gadget layer, and fully operational for Atmel at91sam9261-ek, other processors could be added relatively easily. http://git.denx.de/?p=u-boot/u-boot-usb.git;a=shortlog;h=refs/heads/cdc
card driver over it , we can realize TFTP download with USB. Now we have test successfully in our project, if necessary I’m very glad to contribute
I am still very interested on your solution, and were it differentiates from the CDC branch. Patches to make this branch more mature are very welcome.
Kind Regards,
Remy