[PATCH 4/4] ARM: versatile: support configuring versatile machine for no-MMU

[Russell King - ARM Linux]

On Wed, Dec 07, 2016 at 02:33:53PM +0000, Vladimir Murzin wrote:
> Hi Linus,
> 
> On 07/12/16 14:11, Linus Walleij wrote:
> > Another target I had in mind was the Integrator which
> > incidentally supports a bunch of the old noMMU core
> > tiles where we can swap in an ARM946, which I guess
> > could work with this?
> 
> Do you mind trying my "Allow NOMMU for MULTIPLATFORM" series [1]? Greg just
> reported it did a trick for Versatile, there is a good chance it would work
> for Integrator too ;)

My views on gluing multiplatform and nommu together have already been
stated several times, and remain unchanged.

Greg's patch looks almost sane, but what I'd like to see is instead of
directly doing this:

 config ARCH_VERSATILE
        bool "ARM Ltd. Versatile family"
-       depends on ARCH_MULTI_V5
+       depends on ARCH_MULTI_V5 || ARM_SINGLE_ARMV5

we could do:

 config ARCH_VERSATILE
        bool "ARM Ltd. Versatile family" if ARCH_MULTI_V5
-       depends on ARCH_MULTI_V5
+       depends on ARCH_MULTI_V5 || ARM_SINGLE_ARMV5
	default y if ARM_SINGLE_ARCH_VERSATILE

adding the versatile entry in the upper level choice (where it always used
to be) but with "ARM_SINGLE_ARCH_VERSATILE" instead.

This would have the effect of allowing the multiplatform-converted stuff
to start being used on nommu (again) but without running into the problems
I've highlighted.

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