tree 264913b12395a404601a9f5a4ceed069643d47b1
parent f68339b02500c9a22afe6eec9e1185cfc7f3a7c1
author Tao Bao <tbao@google.com> 1456256319 -0800
committer Tao Bao <tbao@google.com> 1456447182 -0800

releasetools: Support generating downgrade incremental OTAs.

Add --downgrade flag to ota_from_target_files.py script. It allows
generating an incremental OTA that updates from a newer build to an
older one (based on timestamp comparison). "post-timestamp" line in the
metadata file will be replaced by "ota-downgrade=yes". A data wipe will
always be enforced, so "ota-wipe=yes" will also be included in the
metadata file.

Bug: 26883782
Change-Id: Iaa05f662d948b7ab632a9fbb7051cc3f8bf68c21
(cherry picked from commit 5d1825664a0fec256fa28d62aadcac96f59a41b2)