[Sound-open-firmware] Linux build for arm64

[Daniel Baluta]

On Thu, Jul 18, 2019 at 10:57 PM Pierre-Louis Bossart
<pierre-louis.bossart at linux.intel.com> wrote:
>
>
>
> On 7/18/19 2:27 PM, Daniel Baluta wrote:
> > Hi Liam  / Pierre,
> >
> > Could we add a build for arm64 too in CI? With recent patches that
> > add support for i.MX8 SOF Linux driver it would be handy to also
> > have the build for arm64.
> >
> > I can help you with the cross-compilers and build instructions.
> >
> > Currently we are only building for x86_64.
> >
> > https://travis-ci.org/thesofproject/linux/builds/560509972
>
> Sure, I see no issue, as long as it's just compilation it's almost free.
> hardware-tests are probably out-of-scope as discussed some time back.
>
> the main point will be to agree on which kernel config you want to use.
> To speed things up, we use a minimal kernel based on defconfig and
> Kconfig fragments, so that changes are automatically applied. see
> https://github.com/thesofproject/kconfig. if we have a imx-defconfig
> fragment file then we can add support very quickly.
>
> I use this for my own 'maintainer' tests where I compile locally with
> make.cross for multiple architectures, see script attached.

That's great! I will have a look at your scripts and provide some info
tomorrow. In the arm64 world there are no separate board defconfigs.

There is one huge defconfig with everything enabled in
linux/arch/arm64/configs/defconfig.
So, I will trim this down to speed up compilation.

thanks,
Daniel.