[U-Boot] [PATCH] keystone2: add high memory test

[Tom Rini]

On Wed, Jul 08, 2015 at 11:51:39AM -0400, Vitaly Andrianov wrote:

> Keystone2 SOC physical DDR3 address range is outside the first 4GB and
> cannot be entirely accessible without MMU enabled. Only first 2GB of
> the physical memory have 32-bits aliased addresses. This patch adds u-boot
> shell command that allows to enable/disable MMU and map the 1GB of
> 36bits physical memory to the first 4GB address range.
> 
> Signed-off-by: Vitaly Andrianov <vitalya at ti.com>
> ---
>  arch/arm/mach-keystone/Makefile  |   3 +-
>  arch/arm/mach-keystone/highmem.c | 162 +++++++++++++++++++++++++++++++++++++++
>  2 files changed, 164 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/mach-keystone/highmem.c

The code looks reasonable.  But why do we need this?  Thanks.

-- 
Tom
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