vbnv: check alignment of nvram in advance

Currently, erase operation only works if the region is sector-aligned.
These asserts ensure we can erase the region when it's all used up.

Erase operation can be updated to handle unaligned erases by read,
update, write-back cycle. However, these asserts will still remain useful
in case the adjacent region contains critical data and mis-updating it
can cause a critical failure.

Additionaly we should write a FAFT test but it's more reliable to catch
it here since FAFT can fail in many ways.

BUG=none
BRANCH=master
TEST=tested on samus using misaligned nvram region

Change-Id: I3add4671ed354d9763e21bf96616c8aeca0cb777
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: fc001a4d3446cf96b76367dde492c3453aa948c6
Original-Change-Id: Ib4df8f620bf7531b345364fa4c3e274aba09f677
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/297801
Reviewed-on: http://review.coreboot.org/11654
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

0 files changed, 0 insertions, 0 deletions