Re: [External] Re: [PATCH] firmware: added a firmware information passing method FFI

[运辉崔]

Hi Ard,

On Wed, Apr 26, 2023 at 3:09 PM Ard Biesheuvel <ardb@xxxxxxxxxx> wrote:
>
> Hello Yunhui,
>
> I am not sure this is a good idea: this is clearly intended for arm64,
> which cannot use ACPI without the EFI memory map, which it uses to
> cross reference memory opregion accesses, to determine the correct
> memory type attributes.
>
Not only for arm64, but also other arches, such as riscv.
For memory-related nodes, it will be done in the early scan of the device tree.


> What is the use case you are trying to accommodate here?
>
Some bootloaders do not support uefi, such as coreboot,
but need to support acpi, smbios.


Thanks,
Yunhui