Re: [RFC 3/7] ARM: vf610m4: add new machine and SoC for Vybrid on Cortex-M4

Am 2014-10-12 20:51, schrieb Arnd Bergmann:

On Sunday 12 October 2014 20:13:57 Stefan Agner wrote:

quoted

This patch adds a new machine ARCH_MXCM4 which requires !MMU and
!MULTIARCH and is meant as machine for the hetregenous multi-core
Vybrid/i.MX SoC's to run Linux on the Cortex-M4.

The first SoC supported is Vybrid on Cortex-M4 (SOC_VF610M4).

Signed-off-by: Stefan Agner <redacted>
---
Not sure whether we really need a new MACH, but since MACH_MXC needs
MULTIARCH, which in turn conflicts with !MMU, I guess there is no
easier way to do it... And then, this also needs a new SOC.

I've carried an experimental patch to enable !MMU in combination with
MULTIPLATFORM for a while, it's probably time to do this for real now,
especially since we now have two !MMU platforms that can be built
together. Independent of the question of whether such a combined kernel
could run on real hardware or anybody would want to run such a kernel
if it were possible, I think it's very useful to be able to build
allmodconfig with MMU disabled and get all drivers for the available
platforms for build testing.

Are these patches online somewhere?

That sounds interesting. I guess I can get rid of ARCH_MXCM4 then.
Still, SOC_VF610M4 will be needed. We just need to make ARCH_MXC also
available on !MMU and use if to distinguish !MMU/MMU SoC's.

--
Stefan
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