[Buildroot] [git commit] arch/Config.in.arm: add Cortex-A57 and Cortex-A72

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Tue Dec 6 14:04:44 UTC 2016


Hello,

On Tue, 06 Dec 2016 14:20:29 +0100, Peter Korsgaard wrote:

>  > commit: https://git.buildroot.net/buildroot/commit/?id=2131f1b3817d594ce24ac9ba263f104077cf7c49
>  > branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master  
> 
>  > Add two popular ARM64 cores to the list of supported cores: Cortex-A57
>  > and Cortex-A72.  
> 
> Hmm, do old toolchains know about these cores?
> 
> Looking around in gcc.git, it seems like they were added:
> 
> a53/a57 in 4.8 for aarch64 / 4.9 for arm
> a72 in 5.1 for aarch64/arm

Correct.

> So we need to ensure the older gcc versions cannot be selected when
> these variants are selected. We possibly also need to do something for
> external toolchains.

Indeed.

I won't have a look tonight, but can have a look tomorrow, unless
someone beats me at it.

Thanks,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com


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