Two Payloads

[Lukas Jungbauer]

Hi,

is it possible to run two Payloads on Coreboot at the same Time, like Heads and TianoCore?

Payloads can only be installed by building a new Image and Software-Flashing it, correct?

Best Regards,
Lukas

[Matt DeVillier]

there are two ways to handle multiple payloads in coreboot:

1) have a single primary payload, which provides the mechanism to
execute secondary payloads. Grub and SeaBIOS can do this; Heads and
Tianocore cannot

2) have two primary payloads, and use the normal/fallback mechanism to
select between them using nvramtool

Either way you'd need to read/modify/write your existing coreboot
image, and in many cases simply rebuilding is easier.

For the example you gave, you'd want to use option #2 for
Heads+Tianocore, since launching one of those from the other is not
(currently) doable

On Thu, Apr 21, 2022 at 4:54 AM Lukas Jungbauer  wrote:
> Hi,
>
> is it possible to run two Payloads on Coreboot at the same Time, like Heads and TianoCore?
>
> Payloads can only be installed by building a new Image and Software-Flashing it, correct?
>
> Best Regards,
> Lukas
> _______________________________________________
> coreboot mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]

[ron minnich]

for a good example of matt's (1) above, see the pc engines apu2
coreboot image. It's very nice.

On Thu, Apr 21, 2022 at 7:05 AM Matt DeVillier  wrote:
> there are two ways to handle multiple payloads in coreboot:
> have a single primary payload, which provides the mechanism to
>
> execute secondary payloads. Grub and SeaBIOS can do this; Heads and
> Tianocore cannot
> have two primary payloads, and use the normal/fallback mechanism to
>
> select between them using nvramtool
>
> Either way you'd need to read/modify/write your existing coreboot
> image, and in many cases simply rebuilding is easier.
>
> For the example you gave, you'd want to use option #2 for
> Heads+Tianocore, since launching one of those from the other is not
> (currently) doable
>
> On Thu, Apr 21, 2022 at 4:54 AM Lukas Jungbauer  wrote:
> > Hi,
> >
> > is it possible to run two Payloads on Coreboot at the same Time, like Heads and TianoCore?
> >
> > Payloads can only be installed by building a new Image and Software-Flashing it, correct?
> >
> > Best Regards,
> > Lukas
> > _______________________________________________
> > coreboot mailing list -- [e-mail]
> > To unsubscribe send an email to [e-mail]
>
> coreboot mailing list -- [e-mail]
> To unsubscribe send an email to [e-mail]