commit 7a8d8fd176dace4a3a8f99d7a51d251e9e1a58d2
author Yi-Yo Chiang <yochiang@google.com> Wed Jan 19 23:22:45 2022 +0800
committer Yi-yo Chiang <yochiang@google.com> Thu Jan 20 11:11:32 2022 +0000
tree c250346a6bae06705f5853f42972e28fdd441760
parent 87afd3983154c857098aa697f12628bb738887ef

Better heuristics for discovering boot sig for retrofitted image

For retrofitted images, DEFINE the last 16K bytes to be the boot
signature.
For boot v2, the new heuristic doesn't assume the internal structure of
the boot image, thus we don't need to calculate the boot signature
offset, making the boot signature excavation more deterministic and
robust.

Bug: 211741246
Test: Mock out boot image with a retrofitted image
Test: atest vts_gki_compliance_test
Change-Id: I1236d499a5987c6f1e0b814547afd8279ffa3280