[U-Boot] [PATCH] dfu: initial implementation

[Wolfgang Denk]

Dear Stefan Schmidt,

In message <20111102200717.GP17069 at excalibur.local> you wrote:
>
> While I think a dfu command is usefull I don't like the need to
> execute it before any DFU interaction can happen. That may be an
> option during development but for field upgrades or receovery it is
> not.

Yes, a command is the natural way in U-Boot to start any activities.

> I already wrote a bit about my approach here. At OpenMoko we used a
> button to enter u-boot during startup when pressed. This offered a

This is just another way to start a command.

> usbtty interface as usb gadget as well as the runtime descripto for
> DFU. With dfu-util it was possible to iniate the DFU download or
> upload procedure while being in the mode. Another option would be to
> directly jump into DFU mode when a button is pressed.

NAK.  Let's stick to standard interfaces.

Best regards,

Wolfgang Denk

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