Can not extract VBIOS and GOP about uefitool

[NikolajSchlej]

The file is not an UEFI image, but an AMI PFAT capsule that needs to be extracted first using @platomav's excellent BIOSUtilities toolset, namely AMI_PFAT_Extract.py script.

Once extracted, the resulting *_ALL.bin file can be opened in UEFITool as usual, and will have both VBIOS and GOP visible in the tree.

00 -- AN0027.CAP_ALL.bin.zip

[peter-held]

I still can not find them.

After opening the .bin file in UEFITool, I'm expecting to see something like here:

https://github.com/Kethen/edk2/blob/edk2-intel-gop/extract_vbt_gop.md

Which names should I look for ?

Thanks.

[NikolajSchlej]

Haven't found the GOP driver, but it's most likely implemented as a combination of an Intel Graphics PEI driver and OemGop driver that just republishes the protocol.

[peter-held]

Thanks for the hints.

I could find two versions of VBIOS inside:

• for ALDERLAKE-P from 27.03.2015
• for ICELAKE from 15.11.2018

Do you know why there are two of them (my processor is I5-1340P, so ALDERLAKE-P seems better) ?

Regarding the GOP driver, is it possible to build it from what's inside the BIOS file ?

I need both of them in order to build the Ovmf file for GPU passthrough, like here:
https://github.com/Kethen/edk2

[NikolajSchlej]

Take whatever is closer to your real configuration.

No, you can't build a GOP driver for OVMF with what you have there because OVMF lacks a PEI phase. However, it will likely work to grab a GOP driver from BIOS for a similar board that supports same CPU modules, but doesn't use FSP.

[peter-held]

Can you tell me how can I do that ?

Thanks.

[peter-held]

I found a Dell laptop with the same processor
https://www.dell.com/support/home/en-in/product-support/product/vostro-16-5630-laptop/drivers
extracted the BIOS and GOP Driver.

Can you confirm me, please, that this is what it needs (that doesn't use FSP) ?
gop.zip

Thanks.

[NikolajSchlej]

Yep, this is a traditional DXE GOP driver.

[peter-held]

Thanks.