b510ae3a33
This change implements the flash_gsi subcommand: 1. Erase userdata/cache partition 2. Erase metadata partition (optional) 3. Flash generic system image 4. Disable Android Verified Boot (optional) 5. Reboot the device Bug: 70253882 Test: make gsi_util Test: gsi_util flash_gsi Test: gsi_util --debug flash_gsi --image system.img Change-Id: I552c04aaf227c6fca2e5c3caab26d713e2f6f5d0
64 lines
2.2 KiB
Python
64 lines
2.2 KiB
Python
# Copyright 2017 - The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Implementation of gsi_util flash_gsi command."""
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from gsi_util.utils import cmd_utils
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from gsi_util.utils import fastboot_utils
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from gsi_util.utils import file_utils
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def do_flash_gsi(args):
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"""Flashes a GSI image (system.img).
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Also erases userdata/metadata partition and disables
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Android Verified Boot (AVB).
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Args:
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args: flash_gsi command arguments.
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"""
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fastboot_utils.erase() # erases userdata/cache partition
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# Not every device has metadata partition, so allow_error is True.
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fastboot_utils.erase('metadata', allow_error=True)
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# Flashes GSI.
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fastboot_utils.flash('system', args.image)
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# Disables AVB.
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with file_utils.UnopenedTemporaryFile() as vbmeta_image:
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# vbmeta flag 2 means disable entire AVB verification.
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cmd_utils.run_command(['avbtool', 'make_vbmeta_image',
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'--flag', '2',
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'--padding_size', '4096',
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'--output', vbmeta_image])
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# Not every device uses AVB, so allow_error is True.
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fastboot_utils.flash('vbmeta', vbmeta_image, allow_error=True)
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# Reboots the device.
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fastboot_utils.reboot()
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def setup_command_args(subparsers):
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"""Sets up command args for 'flash_gsi'."""
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parser = subparsers.add_parser(
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'flash_gsi', help='flash a GSI image',
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description=('Flash a GSI image - '
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'including erasing userdata, '
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'disabling AVB (if the device supports AVB) '
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'and erasing metadata partition (if the device has).'))
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parser.add_argument('-i', '--image',
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help='the GSI image to flash', type=str)
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parser.set_defaults(func=do_flash_gsi)
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