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Temporary hack for making T->S downgrade work

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Downgrade OTA was broken because generic_ramdisk was removed from boot
partition in android T. Neither does O6 have init_boot. O6 also doesn't
include generic ramdisk in vendor boot, so no way for otatools to locate
contents of generic ramdisk. As a hack, omit boot partition timestamp if
we can't find ramdisk.

Test: generate T->S downgrade OTA for O6
Bug: 231656318
Merged-In: I9f5359462332aadadc324348873a3a4b2b126068
Change-Id: I9f5359462332aadadc324348873a3a4b2b126068
This commit is contained in:
Kelvin Zhang
2022-05-09 10:20:52 -07:00
committed by Baligh Uddin
parent 5e3cd45b5c
commit 25d69c8bf5
1 changed files with 4 additions and 3 deletions
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7
tools/releasetools/ota_from_target_files.py
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@@ -1068,10 +1068,11 @@ def GeneratePartitionTimestampFlagsDowngrade(
pre_partition_state, post_partition_state):
assert pre_partition_state is not None
partition_timestamps = {}
for part in pre_partition_state:
partition_timestamps[part.partition_name] = part.version
for part in post_partition_state:
partition_timestamps[part.partition_name] = \
partition_timestamps[part.partition_name] = part.version
for part in pre_partition_state:
if part.partition_name in partition_timestamps:
partition_timestamps[part.partition_name] = \
max(part.version, partition_timestamps[part.partition_name])
return [
"--partition_timestamps",