[RFC PATCH] ARM: Make a compile trustzone conditionally

[arnd@arndb.de (Arnd Bergmann)]

On Monday 18 June 2012, Kyungmin Park wrote:
> > I would prefer to see this handled by using the smp_ops patchset that
> > Marc Zyngier has been posting instead, replacing the boot_secondary
> > function pointer during early boot depending on whether trustzone is
> > enabled or not.
> I understand your request, but it's not only boot_secondary but also
> exynos pm common code and so on.even more it's used at devfreq to
> adjust the RAM bus timings.
> 
> Now these files are covered.
> 

Would it help to have a trustzone_ops structure with pointers to
functions if needed, similar to but separate from smp_ops?

Instead of checking for trustzone_enabled() in each place where
we call into smc, we can have a generic implementation that
we call for the disabled case, and provide a vendor specific
version of that struct with functions that call into smp 
where necessary.

	Arnd