[Qemu-devel] seabios does not support booting from usb-uas with nec-usb-xhci

[Qemu-devel] seabios does not support booting from usb-uas with nec-usb-xhci

[Tom Yan]

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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.

Btw, not sure if it's relevant, booting usb-uas is not at all
supported in ovmf: https://github.com/tianocore/edk2/issues/85

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Re: [Qemu-devel] seabios does not support booting from usb-uas with nec-usb-xhci

[Tom Yan]

On 6 May 2016 at 17:00, Tom Yan <tom.ty89@gmail.com> wrote:
>
> This makes me wonder if it is just a missing feature of a bug.
>

I meant "or" instead of "of".

Re: [Qemu-devel] seabios does not support booting from usb-uas with nec-usb-xhci

[Tom Yan]

Sorry, I forgot to mention that I am using qemu 2.5.1 and seabios 1.9.2.

On 6 May 2016 at 17:04, Tom Yan <tom.ty89@gmail.com> wrote:
> On 6 May 2016 at 17:00, Tom Yan <tom.ty89@gmail.com> wrote:
>>
>> This makes me wonder if it is just a missing feature of a bug.
>>
>
> I meant "or" instead of "of".

Re: [Qemu-devel] [SeaBIOS] seabios does not support booting from usb-uas with nec-usb-xhci

[Gerd Hoffmann]

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

Re: [Qemu-devel] seabios does not support booting from usb-uas with nec-usb-xhci

[Tom Yan]

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
>
>