tree 412b5413ff2e88bfc036c57418fd36186c56bfc7
parent fc78be29352653e13e4c9ecdb75ad0a166b61ee7
author Iris Chang <iris.chang@mediatek.com> 1557127216 +0800
committer Bowgo Tsai <bowgotsai@google.com> 1557221209 +0000

Support booting a chained boot-debug.img

boot-debug.img is introduced to allow 'adb root' if the device is
unlocked, and it cannot be release signed. If /boot partition is chained
in AVB signing and boot-debug.img is used, avb_slot_verify() in
userspace will return AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED
and fs_mgr will refuse to boot. This CL treats the public key rejection
as non-fatal for chained vbmeta to continue booting, if the device is
unlocked.

Bug: 129508966
Test: can root with user load which /boot chained in AVB signing
Change-Id: Idfa8caffbb96f33702b1749afd2e2a59616ddba7