linux-kernel - Re: [RFC PATCH 01/10] powerpc/chrp: Remove CHRP support

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Message-ID: <CAMuHMdWBZJvVaKiWk_VaHY0ZQiaezn9Kqa0XpTXKzf0gh_rG+g@mail.gmail.com>
Date: Thu, 14 Nov 2024 15:31:50 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Michael Ellerman <mpe@...erman.id.au>
Cc: linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org, arnd@...db.de
Subject: Re: [RFC PATCH 01/10] powerpc/chrp: Remove CHRP support

On Thu, Nov 14, 2024 at 2:11 PM Michael Ellerman <mpe@...erman.id.au> wrote:
> CHRP (Common Hardware Reference Platform) was a standard developed by
> IBM & Apple for PowerPC-based systems.
>
> The standard was used in the development of some machines but never
> gained wide spread adoption.
>
> The Linux CHRP code only supports a handful of machines, all 32-bit, eg.
> IBM B50, bplan/Genesi Pegasos/Pegasos2, Total Impact briQ, and possibly
> some from Motorola? No Apple machines should be affected.
>
> All of those mentioned above are over or nearing 20 years old, and seem
> to have no active users.
>
> So remove the CHRP support. If there's interest in still supporting some
> of the machines that can be brought back from the git history.
>
> Note there are still some references to CHRP/chrp in various comments
> and some in the code, because later standards (eg. RPA, PAPR) used some
> elements of CHRP or copied the CHRP behaviour. These will need to be
> cleaned up on a case-by-case basis to either refer to newer standards or
> left as-is when that's correct.
>
> The CHRP code was copied from arch/ppc, and before that it mostly
> predates git, so the original authorship is largely lost. If anyone
> wrote any of this code and would like a CREDITS entry just let me know.
>
> Signed-off-by: Michael Ellerman <mpe@...erman.id.au>

Acked-by: Geert Uytterhoeven <geert@...ux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds