[PATCH 1/3] ARM: CSR: Adding CSR SiRFprimaII board support

[Nicolas Pitre]

On Wed, 6 Jul 2011, Russell King - ARM Linux wrote:

> On Wed, Jul 06, 2011 at 02:11:29PM -0400, Nicolas Pitre wrote:
> > On Wed, 6 Jul 2011, Arnd Bergmann wrote:
> > > If the problem is only with a few platforms, my preference would be
> > > to hardcode this to 64k or 0, and leave the platforms that require
> > > something else out of the common zImage for now.
> > > 
> > > For all platforms that only need the 64k window and don't have any
> > > of other special needs, I would also like to hardcode the virtual
> > > address window eventually, so that inb/outb can still be a single
> > > instruction.
> > 
> > I would say that hardcoding the virtual mapping is probably the first 
> > thing to do.  That would certainly simplify the rest of the kernel.
> 
> We _used_ to hard-code that mapping, but it became painful to supply
> that information into soc_common, which isn't supposed to be ARM
> specific.
> 
> So going back to hard-coded mappings is a backwards step - essentially
> reintroducing one problem which was already solved to resolve a different
> problem.
> 
> That isn't progress, that's merely changing one resolution for another.

Let's simply let the problematic cases RIP then.  Maybe those
PCMCIA equipped ARM board will get out of commission eventually.


Nicolas