From: Tom Rini <trini@konsulko.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] keystone2: add high memory test
Date: Tue, 21 Jul 2015 17:28:45 -0400 [thread overview]
Message-ID: <20150721212845.GK25532@bill-the-cat> (raw)
In-Reply-To: <1436370699-4167-1-git-send-email-vitalya@ti.com>
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
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next prev parent reply other threads:[~2015-07-21 21:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-08 15:51 [U-Boot] [PATCH] keystone2: add high memory test Vitaly Andrianov
2015-07-21 21:28 ` Tom Rini [this message]
2015-07-22 11:41 ` Vitaly Andrianov
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