Attention is currently required from: Paul Menzel, Angel Pons.

Marx Wang uploaded patch set #12 to this change.

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soc/intel/apollolake: Provide the option to enable DDR 2x refresh rate

We need to enable 2x refresh rate in order to mitigate Row Hammer
vulnerability for the boards with specific DRAMs. To enable it, we
can select "ENABLE_DDR_2X_REFRESH" option.

BUG=b:152151369
TEST=select "ENABLE_DDR_2X_REFRESH", build the image and run
suspend_stress_test with memory check for 2500 cycles.

Signed-off-by: Marx Wang <marx.wang@intel.com>
Change-Id: I0235fc7906626f28f14367c283433e5b066cc89a
---
M src/soc/intel/apollolake/Kconfig
M src/soc/intel/apollolake/meminit.c
2 files changed, 7 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/10/48510/12

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