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 <vita...@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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