Daisuke Nojiri 729a4ba2bd EFS: Switch active slot when current slot is invalid ...

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

2017-09-21 01:07:55 -07:00

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