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When EC receives many flash write requests from host and PDCMD, CHARGE and USB_CHG_P0 tasks are all ready to run, the HOOK task may not get scheduled in time to pet the watchdog resulting in an EC reset. BUG=chrome-os-partner:51438 BRANCH=None TEST=Manual on lars, determine two EC versions that have enough differences so that replacing one image with the other will require all or most of the flash pages to be updated. Alternate between flashing the two images with flashrom using a script. Atleast 1000 iterations should pass. Change-Id: I8b5c8b680a2935b945f3740e371dee2d218ec4c5 Signed-off-by: Shamile Khan <shamile.khan@intel.com> Reviewed-on: https://chromium-review.googlesource.com/334457 Reviewed-by: Stefan Reinauer <reinauer@google.com> Reviewed-by: Aseda Aboagye <aaboagye@chromium.org> (cherry picked from commit a537d1ac44c40e7f6e1131e8cc852b030ccdba52) Reviewed-on: https://chromium-review.googlesource.com/334903 Commit-Ready: Aseda Aboagye <aaboagye@chromium.org> Tested-by: Aseda Aboagye <aaboagye@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