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

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Message-ID: <CAEEQ3wmDBJkfOeKCQfcnuE+1=1K0D2pzu+Sn+zPEWk+RHs0NFQ@mail.gmail.com>
Date:   Thu, 27 Apr 2023 11:37:46 +0800
From:   运辉崔 <cuiyunhui@...edance.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     Ard Biesheuvel <ardb@...nel.org>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>, rafael@...nel.org,
        lenb@...nel.org, jdelvare@...e.com, yc.hung@...iatek.com,
        angelogioacchino.delregno@...labora.com,
        allen-kh.cheng@...iatek.com, pierre-louis.bossart@...ux.intel.com,
        tinghan.shen@...iatek.com, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org, rminnich@...il.com
Subject: Re: [External] Re: [PATCH] firmware: added a firmware information
 passing method FFI

Hi Mark,

On Wed, Apr 26, 2023 at 6:07 PM Mark Rutland <mark.rutland@....com> wrote:
>
> Ard's point is that the device tree doesn't have all the same information (e.g.
> nothing in DT describes the memory type attributes), and so this isn't
> sufficient.

The device tree only needs to complete the parse of the memory type attributes,
it should not be very complicated.

>
> We'd have to create entirely new ways to pass that information, which is not
> very desirable.
>

>
> Can you extend coreboot to provide EFI services, or to chain-load an EFI
> payload?

Currently, coreboot does not support UEFI, and it may not support it
in the future.
Hi rminnich, what do you think?

Thanks,
Yunhui