That's what I guessed too. Is there any plan to add it or is it out of consideration?
On Monday, 9 May 2016, Gerd Hoffmann <kraxel@redhat.com> wrote:
On Fr, 2016-05-06 at 17:00 +0800, Tom Yan wrote:
> Strangely, seabios supports booting from usb-uas with usb-ehci:
>
> https://drive.google.com/open?id=0B50PCxfm5KU1dUFTUG9HU0pEcXc
>
> and usb-bot with nec-usb-xhci:
>
> https://drive.google.com/open?id=0B50PCxfm5KU1QnVzdTBIdEFzZW8
>
> but not usb-uas with nec-usb-xhci:
>
> https://drive.google.com/open?id=0B50PCxfm5KU1Z0t1akNXaVZZLTQ
>
> This makes me wonder if it is just a missing feature of a bug.
missing support for usb3 streams in seabios.
cheers,
Gerd