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6395dbea0c
When waking up from sleep, the real CPU_CLOCK is a lie for a moment(since we cannot switch to the real clock during the first character) so the first character will be corrupted. The UART clock is now sourced from HSI(8MHz) which is available from the first moment after the cpu wakes up from sleep. BUG=None TEST=Console should work. When waking up(not implemented yet) it will also not lose a character BRANCH=None Change-Id: Ia12ed0634290f3edadfe3471b311759c3176260e Signed-off-by: Alexandru M Stan <amstan@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/218728 Reviewed-by: Alec Berg <alecaberg@chromium.org> Tested-by: Alec Berg <alecaberg@chromium.org> Commit-Queue: Alec Berg <alecaberg@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit