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When EFS finds the active slot is invalid, it tries the other slot. This patch makes the other slot active so that the following boots will try the other slot first. This patch also replaces enum flash_rw_slot with system_image_copy_t. The new APIs are therefore renamed from *_slot to *_copy. Basically, this makes vboot see slots as a conceptual place instead of physical spaces bound to flash storage. BUG=b:65028930 BRANCH=none TEST=On Fizz, verify: 1. RW_B is old and updated by soft sync. RW_B is activated and executed after reboot. System continues to boot to OS. 2. RW_A is old and updated by soft sync. RW_A is activated and executed after reboot. System continues to boot to OS. Change-Id: Icf97da13e651e7a931b9d507052b9422566eb16c Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/648449
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