[XS] Change in coreboot[main]: device/Kconfig: Make option to allocate above 4G appear in Kconfig

[Alicja Michalska (Code Review)]

Attention is currently required from: Arthur Heymans, Christian Walter, David Hendricks, Intel coreboot Reviewers, Johnny Lin, Jonathan Zhang, Patrick Rudolph, Paul Menzel, Shuo Liu, Tim Chu, Vasiliy Khoruzhick, [e-mail].

Alicja Michalska has posted comments on this change by Alicja Michalska. ( https://review.coreboot.org/c/coreboot/+/86131?usp=email )

Change subject: device/Kconfig: Make option to allocate above 4G appear in Kconfig
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Patch Set 11:

(4 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/86131/comment/32e46098_76be02d1?usp... :
PS9, Line 26: TigerLake-H
> Tiger Lake-H

Done

https://review.coreboot.org/c/coreboot/+/86131/comment/d880e4e5_56fef81d?usp... :
PS9, Line 28:
> Should you respin the patch, I’d love to see also the Linux messages pasted before and after the cha […]

I don't have access to test hardware right now, but it essentially boils down to:
`[drm] Using a reduced BAR size of 256MiB. Consider enabling 'Resizable BAR' or similar, if available in the BIOS.`

After applying the patch, BAR gets resized to 8192MB

File src/device/Kconfig:

https://review.coreboot.org/c/coreboot/+/86131/comment/9ac843ee_bc49a446?usp... :
PS9, Line 1019: Required for modern graphics cards, such as Intel Arc.
> Maybe give some more background for a user building coreboot.

Not sure what else to add, any suggestions?

https://review.coreboot.org/c/coreboot/+/86131/comment/031d3081_722d476f?usp... :
PS9, Line 1021: GRUB doesn't
> Interesting. […]

I meant using GRUB as a payload of course, GRUB used as bootloader (loaded from MBR or BOOTX64.EFI) doesn't cause issues since framebuffer is already initialized by the payload (i.e EDK2)