Thomas Zimmermann <tzimmermann@xxxxxxx> writes:
> On ARM PCI systems, the PCI hierarchy might be reconfigured during
> boot and the firmware framebuffer might move as a result of that.
> The values in screen_info will then be invalid.
>
> Work around this problem by tracking the framebuffer's initial
> location before it get relocated; then fix the screen_info state
> between reloaction and creating the firmware framebuffer's device.
>
> This functionality has been lifted from efifb. See the commit message
> of commit 55d728a40d36 ("efi/fb: Avoid reconfiguration of BAR that
> covers the framebuffer") for more information.
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
> ---
[...]
> #if defined(CONFIG_PCI)
Shouldn't this be && !defined(CONFIG_X86) ? Or maybe &&
defined(CONFIG_ARM64), although I don't know if the same
also applies to other EFI platforms (e.g: CONFIG_RISCV).
Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx>
--
Best regards,
Javier Martinez Canillas
Core Platforms
Red Hat
