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If we have requested the host to go to recovery mode, the host will usually not need an RW hash because it won't do EC SW sync. Therefore, do not auto-start calculation of our hash if we've requested recovery. This may avoid past recovery-breaking bugs due to unexpected RW contents. If the host does need the hash after all, it will manually request that the computation start. BUG=chromium:612966 BRANCH=None TEST=Boot to recovery mode on kevin, verify that "hash start" print is not seen on UART. Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org> Change-Id: I66d2d74398357dfe30e39882feec8cfba4cc945c Reviewed-on: https://chromium-review.googlesource.com/540695 Commit-Ready: Shawn N <shawnn@chromium.org> Tested-by: Shawn N <shawnn@chromium.org> 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