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Some of the reset causes are found in another register when resuming from a low-power state. We know we'll need to distinguish among them eventually, so we might as well decode them now. BUG=chrome-os-partner:49955 BRANCH=none TEST=make buildall; test on Cr50 I forced the system into deep sleep and observed that the reset cause is accurately recorded on resume. Doing that requires a fair amount of hacks and manual effort, and can't happen by accident. Future CLs will make use of this. The current, normal behavior is completely unaffected. Change-Id: I5a7b19dee8bff1ff1703fbbcc84cff4e374cf872 Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/336314 Reviewed-by: Randall Spangler <rspangler@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