From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vitaly Andrianov <vitalya@ti.com>
Date: Wed, 22 Jul 2015 07:41:55 -0400
Subject: [U-Boot] [PATCH] keystone2: add high memory test
In-Reply-To: <20150721212845.GK25532@bill-the-cat>
References: <1436370699-4167-1-git-send-email-vitalya@ti.com>
 <20150721212845.GK25532@bill-the-cat>
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On 07/21/2015 05:28 PM, Tom Rini wrote:
> 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@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,

I added this code to test DDR3 configuration. Probably you are right. 
After configuration is done we don't need this code.

Thanks,
-Vitaly