[U-Boot] [PATCH 2/5] arm: Add support for HYP mode and LPAE page tables

[Tom Rini]

On Wed, Mar 16, 2016 at 09:33:12AM +0100, Alexander Graf wrote:
> 
> 
> On 15.03.16 18:35, Tom Rini wrote:
> > On Tue, Mar 15, 2016 at 06:21:45PM +0100, Alexander Graf wrote:
> > 
> >> Signed-off-by: Alexander Graf <agraf at suse.de>
> >> ---
> >>  arch/arm/include/asm/system.h | 99 ++++++++++++++++++++++++++++++++++++++++---
> >>  arch/arm/lib/cache-cp15.c     | 66 ++++++++++++++++++++++++++---
> >>  2 files changed, 153 insertions(+), 12 deletions(-)
> > 
> > I think in this patch we need to add SYS_ARM_LPAE to arch/arm/Kconfig
> > and then later select it under ARCH_BCM283X or TARGET_RPI_2 (I don't
> > know the SoC well enough to say which side is forcing this on us).
> 
> So you'd prefer to go via kconfig rather than a board #define?

Yes.

> The reason we need this is that U-Boot gets entered in HYP mode. This is
> not specific to the SoC, it's specific to the way it boots, so it
> belongs in the rpi2 configuration. The only other system I'm aware of
> that supposedly works like this is the Calxeda Midway.

Right, OK, so selected by TARGET_RPI_2 it is :)

-- 
Tom
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