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e806e20c03
This CL adds: 1. Fixed the incorrect address of BKUP_STS register. 2. Cleared the IBBR bit of BKUP_STS register at initial because its default value is 1(means the content of BBRAM is invalid) whenever VBAT is powered up. 3. Add debug msg when IBBR bit is set to indicate the BBRAM's corruption. 4. Modified the valid BBRAM offset from 1 to 0 and size from 63 to 64. BRANCH=none BUG=b:38187362 TEST=No build error for make buildall; Check IBBR is cleared at initial. Check IBBR is set by changing the VBAT voltage below VBAT MIN. Test console command "reboot ap-off" on poppy. Change-Id: I69d98b50d4e0aec17b55a4a9b5e8f1a412a3fe45 Signed-off-by: CHLin <CHLIN56@nuvoton.com> Reviewed-on: https://chromium-review.googlesource.com/505861 Commit-Ready: CH Lin <chlin56@nuvoton.com> Tested-by: CH Lin <chlin56@nuvoton.com> Reviewed-by: Furquan Shaikh <furquan@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