[PATCH 0/6] x86: efi: Add a 64-bit coreboot payload

[Simon Glass]

Hi Bin,

On Thu, 23 Apr 2020 at 02:05, Bin Meng <bmeng.cn at gmail.com> wrote:
>
> Hi Simon,
>
> On Mon, Apr 6, 2020 at 7:22 AM Simon Glass <sjg at chromium.org> wrote:
> >
> > This series creates a new 64-bit 'coreboot64' build which can be launched
> > from coreboot. It uses SPL to effect the jump to 64-bit mode.
>
> Adding 64-bit U-Boot as a coreboot payload is nice.
>
> >
> > This was done in an attempt to get the Ubuntu FirmwareTestSuite[1]
>
> Yet I fail to understand why adding 64-bit U-Boot as the coreboot
> payload could help running the Ubuntu Firmware Test Suite. Does 32-bit
> U-Boot as the coreboot payload not work in this case?

That's right. They only provide a 64-bit EFI image.

We could presumably make 64-bit EFI images work on 32-bit U-Boot, but
it doesn't at present.

>
> > working. Unfortunately the latest version shows a splash screen and hangs,
> > perhaps due to some missing EFI support.
> >
> > [1] https://wiki.ubuntu.com/FirmwareTestSuite

Regards,
Simon