Re: No framebuffer available until amdgpu driver is loaded

[Jorge Fernandez Monteagudo]

Hi Nico!
> but it is. It's part of 0xd0000000-0xffffffff.
>
> Beside little SMM and some ACPI, coreboot is no resident firmware like
> a BIOS that leaves some code to call into. Hence, if you run the VBIOS
> inside coreboot, it will also leave nothing for the OS to query the
> framebuffer info.
>
> You have to make use of the framebuffer info coreboot leaves in it's
> own tables. With the current payload loading (I assume the kernel is
> wrapped into a SELF binary), this information is not handed over to
> the kernel (it could, though). So you need a driver that can fetch it.
>
> Have a look into drivers/firmware/google/ in the kernel. GOOGLE_
> FRAMEBUFFER_COREBOOT=y should do the trick.

Yes! That's makes sense! I didn't understand how the info was received by the kernel.
Now I've patched my kernel with the https://lore.kernel.org/patchwork/cover/875704/
patches and I have framebuffer.

Thanks a lot!
Jorge