On 17:59 Fri 16 Jan , Jacky Lam wrote:

Dear all,

Could anyone kindly tell me if u-boot supports itself as a mass storage device?

no, maybe MTP will be simplest to implement

Or if u-boot main stream support the a protocol so call USB DFU(Universal Serial Bus Device Firmware Upgrade)?

no

I have first seen this on openmoko.org and seems they use u-boot as well. However, when I look at the newest u-boot (1.3.4). It seems no code is about it. I don't know if I have overlooked something.

I've ssen it in the u-boot dev tree of openmoko but they never do the necessary to add it to the Mainline

feel free to send patch

Best Regards, J.