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From: Thomas Petazzoni via buildroot <buildroot@buildroot.org>
To: Florian Fainelli <f.fainelli@gmail.com>
Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>, buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH] arch/mips: Allow building for MIPS IV
Date: Tue, 8 Aug 2023 23:54:33 +0200	[thread overview]
Message-ID: <20230808235433.671b0ca3@windsurf> (raw)
In-Reply-To: <20230808214153.1453666-1-f.fainelli@gmail.com>

Hello Florian,

On Tue,  8 Aug 2023 14:41:53 -0700
Florian Fainelli <f.fainelli@gmail.com> wrote:

> MIPS IV is an older ISA than R1 but is still useful to support older
> MIPS-based systems (e.g.: Cobalt Qube).
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Thanks for this patch. Support for MIPS IV was initially in Buildroot,
and got removed in 2014, as part of:

commit dd45fe0efb678a8a674330ad46b7641a3284dff9
Author: Gustavo Zacarias <gustavo@zacarias.com.ar>
Date:   Mon Dec 1 11:16:59 2014 -0300

    arch/mips: remove deprecated mips1/2/3/4 support
    
    Remove the support for generating mips1/2/3/4 code since it has been
    deprecated for more than a year now.
    Also remove the unnecessary kludges in packages for it.
    
    Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
    Acked-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
    Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

> -	  64bit capable: 64, 64r2, 64r3, 64r5, 64r6
> -	  non-64bit capable: 32, 32r2, 32r3, 32r5, 32r6
> +	  64bit capable: mips4, 64, 64r2, 64r3, 64r5, 64r6
> +	  non-64bit capable: mips4, 32, 32r2, 32r3, 32r5, 32r6

This list is quite odd, because it's not even an exhaustive list of the
MIPS cores that we support.

Is mips4 supported by glibc, uclibc-ng and musl?

Since IMG kind of gave up on MIPS, we have difficulties in getting some
help in Buildroot to maintain MIPS support and address issues, so I'm a
bit cautious about adding more MIPS stuff.

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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  reply	other threads:[~2023-08-08 21:54 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-08 21:41 [Buildroot] [PATCH] arch/mips: Allow building for MIPS IV Florian Fainelli
2023-08-08 21:54 ` Thomas Petazzoni via buildroot [this message]
2023-08-08 21:56   ` Florian Fainelli
2023-08-08 22:05     ` Thomas Petazzoni via buildroot
2023-08-10 20:41 ` Thomas Petazzoni via buildroot

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