[U-Boot] When to create a SoC directory for ARM

[Scott Wood]

On Wed, 2013-09-25 at 16:30 -0700, York Sun wrote:
> Dear Wolfgang,
> 
> I failed to find the guideline, here is my question. Pardon me if this
> is a dump question as I am still new to ARM.
> 
> As David Feng post his patch set to add ARMv8 support, I am trying to
> enable it for Freescale implementation. Let's name it as LS2 for this
> discussion. I am thinking to reuse as much as possible for existing
> codes, which include copying some header files from powerpc partially. I
> noticed the SoC field in boards.cfg file and I am wondering how to use
> it effectively. I want to put LS2 specific headers to
> arch/arm/include/asm/arch-ls2. Do I need to copy all files from
> arch/arm/include/asm/arch-armv8/? There aren't many but I see mmu.h is
> included in start.S. I have been searching case like this in ARMv7 but
> didn't see shared header file (maybe I missed it). Please advise.

LS2 is (or perhaps more accurately, contains) an implementation of
ARMv8, so you should be using arch-armv8 rather than copying it.

-Scott