[PATCH V2] ARM: mvebu: fix RAM size for Armada XP board DB-MV784MP-GP

[Jason Cooper]

On Thu, Mar 14, 2013 at 10:22:36AM -0600, Jason Gunthorpe wrote:
> On Thu, Mar 14, 2013 at 03:57:54PM +0000, Jason Cooper wrote:
> > The board is supplied with a 4GB RAM module.  This value can be
> > overridden by the bootloader based on probed memory size.  We set it to
> > a reasonable value here.
> > 
> > Signed-off-by: Jason Cooper <jason at lakedaemon.net>
> > Changes from v1:
> >  - grammatical fix suggested by Sergei Shtylyov
> >  - correct size suggested by several folks (within 32bit, 1 dword)
> > 
> > As promised, catching this fix in the -rc cycle.
> > 
> > For those not familiar, earlier versions of the patch adding this board listed
> > 3GB because that is all that was visible.  I mistaken applied v3 of the patch
> > instead of v4 which properly listed 4GB.  This patch cleans up my error.
> 
> What happens when the kernel tries to treat 0xD0000000 and above as
> memory? Lots of internal register blocks overlap 0 -> 4GB - won't this
> cause resource conflicts on boot? I'm actually very surprised it boots
> at all - what does /proc/iomem say?

We'll have to wait to hear from Gregory or Florian on that.  They are
the only two I know of who have this board.  I can only compile-test.

thx,

Jason.