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This commit enables the use of the nvmem vars module. The console lock state is migrated from using the long life scratch register, to nvmem vars instead which will persist across power on reboots. BUG=b:35586145 BRANCH=None TEST=Flash a dev image. Lock the console. Remove all power from the system. Power on system and verify that console is still locked. Unlock the console, remove power from the system, power on the system, verify that the console is now unlocked. TEST=Repeat the above test, but using the nvtestvar console command instead. Change-Id: I03a2098bb0017cfca59889457a332eafb0e95db6 Signed-off-by: Aseda Aboagye <aaboagye@google.com> Reviewed-on: https://chromium-review.googlesource.com/445804 Commit-Ready: Aseda Aboagye <aaboagye@chromium.org> Tested-by: Aseda Aboagye <aaboagye@chromium.org> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly