[PATCH 1/3] irqchip: gic/realview: support more RealView DCC variants

Arnd Bergmann arnd at arndb.de
Thu Feb 18 06:40:34 PST 2016


On Thursday 18 February 2016 14:19:48 Marc Zyngier wrote:
> On 18/02/16 13:46, Linus Walleij wrote:
> > In the add-on file for the GIC dealing with the RealView family
> > we currently only handle the PB11MPCore, let's extend this to
> > manage the RealView EB ARM11MPCore as well. The Revision B of the
> > ARM11MPCore core tile is a bit special and needs special handling
> > as it moves a system control register around at random.
> 
> Ah, 11MPCore RevB. That thing. Tried to locate one in the magic
> cupboard, and failed. Oh well...

What surprised me though is that it's enabled by default:

$ grep REVB arch/arm/configs/realview*
arch/arm/configs/realview_defconfig:CONFIG_REALVIEW_EB_ARM11MP_REVB=y
arch/arm/configs/realview-smp_defconfig:CONFIG_REALVIEW_EB_ARM11MP_REVB=y

With that option set, the defconfig kernel should not be able
to boot on RevC machines. Do you have a RevC machine that works
with the defconfig?

	Arnd



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