[U-Boot] Mainlining android fastboot support to upstream u-boot

[Wolfgang Denk]

Dear Zach Pfeffer,

In message <BANLkTinddBZbb3yaaoiqM-QZLf9GJen9tw at mail.gmail.com> you wrote:
>
> So, "Google uses it aside", it seems that being able to boot via USB
> is a useful thing and fastboot is a particular solution; I'm not
> entirely sure what other USB u-boot extensions exist apart from those

Well, DFU support is a standard solution, and the LF / CELF has just
recently assigned resources to adapt the existingout-of-tree port for
mainline U-boot.

> already mentioned. I find u-boot great and think being able to use USB
> instead of a serial port would help adoption. Perhaps we can do away
> with fastboot if u-boot had USB support?

U-Boot has this.  We have serial console over USB. We even have
netconsole over Ethernet over USB.

OK, not on all boards and architectures, butthe gound has been laid
and there is something to build on.

> Of course part of RERO is "listen to your customers." With the end of
> native serial port inclusion on most systems and the proliferation of
> USB, it seems that something could be done to the benefit of all.
> Actually, it would be kind of cool to have some low level USB config
> in u-boot.

I cannot really follow this argument.  A plain simple USB serial
adapter will do the job as well.

Best regards,

Wolfgang Denk

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