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fstab: allow unlocked devices to boot with AVB test key

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Set `avb_keys=no_such_key` for dynamic kernel partitions to allow booting
unlocked devices with a custom kernel. This allows a few things:

1) Dogfooders can flash a custom kernel without wiping their device.
   This can help developers track down hard-to-reproduce bugs without
   rolling out a patch to the whole dogfooder population.
2) Developers can uprev their device's kernel without wiping their
   device or packaging the kernel with an Android platform build.

Note: we are using "no_such_key" to ensure an AVB keys file doesn't
accidentally get created.

Test: Flash CI build. Then flash custom kernel on top.
Bug: 274825778
Change-Id: Ibf3cee491404b9efc18c49936edf64c2e3084adf
This commit is contained in:
Will McVicker 2023-10-18 13:31:23 -07:00
parent e3b6f24baa
commit b832cc86c7
1 changed files with 2 additions and 2 deletions
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4
conf/fstab.zuma.in
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@ -7,11 +7,11 @@
system /system ext4 ro wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128
# During compliance testing, the previous line would fail (because GSI is ext4), and the next line would be used to mount GSI.
system /system ext4 ro,barrier=1 wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128
system_dlkm /system_dlkm ext4 ro wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128
system_dlkm /system_dlkm ext4 ro wait,slotselect,avb=vbmeta_system,avb_keys=no_such_key,logical,first_stage_mount,readahead_size_kb=128
system_ext /system_ext ext4 ro wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128
product /product ext4 ro wait,slotselect,avb=vbmeta_system,logical,first_stage_mount,readahead_size_kb=128
vendor /vendor ext4 ro wait,slotselect,avb=vbmeta_vendor,logical,first_stage_mount,readahead_size_kb=128
vendor_dlkm /vendor_dlkm ext4 ro wait,slotselect,avb=vbmeta,logical,first_stage_mount
vendor_dlkm /vendor_dlkm ext4 ro wait,slotselect,avb=vbmeta,avb_keys=no_such_key,logical,first_stage_mount
/dev/block/platform/13200000.ufs/by-name/boot /boot emmc defaults slotselect,avb=boot,first_stage_mount
/dev/block/platform/13200000.ufs/by-name/init_boot /init_boot emmc defaults slotselect,avb=init_boot,first_stage_mount
/dev/block/platform/13200000.ufs/by-name/efs /mnt/vendor/efs f2fs noatime,sync wait,check,formattable