193 lines
6.7 KiB
Python
193 lines
6.7 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2019 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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#
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"""Merges two non-dist partial builds together.
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Given two partial builds, a framework build and a vendor build, merge the builds
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together so that the images can be flashed using 'fastboot flashall'.
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To support both DAP and non-DAP vendor builds with a single framework partial
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build, the framework partial build should always be built with DAP enabled. The
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vendor partial build determines whether the merged result supports DAP.
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This script does not require builds to be built with 'make dist'.
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This script regenerates super_empty.img and vbmeta.img if necessary. Other
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images are assumed to not require regeneration.
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Usage: merge_builds.py [args]
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--framework_images comma_separated_image_list
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Comma-separated list of image names that should come from the framework
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build.
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--product_out_framework product_out_framework_path
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Path to out/target/product/<framework build>.
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--product_out_vendor product_out_vendor_path
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Path to out/target/product/<vendor build>.
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--build_vbmeta
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If provided, vbmeta.img will be regenerated in out/target/product/<vendor
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build>.
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--framework_misc_info_keys
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The optional path to a newline-separated config file containing keys to
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obtain from the framework instance of misc_info.txt, used for creating
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vbmeta.img. The remaining keys come from the vendor instance.
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"""
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from __future__ import print_function
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import logging
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import os
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import sys
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import build_super_image
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import common
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logger = logging.getLogger(__name__)
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OPTIONS = common.OPTIONS
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OPTIONS.framework_images = ("system",)
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OPTIONS.product_out_framework = None
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OPTIONS.product_out_vendor = None
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OPTIONS.build_vbmeta = False
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OPTIONS.framework_misc_info_keys = None
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def CreateImageSymlinks():
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for image in OPTIONS.framework_images:
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image_path = os.path.join(OPTIONS.product_out_framework, "%s.img" % image)
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symlink_path = os.path.join(OPTIONS.product_out_vendor, "%s.img" % image)
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if os.path.exists(symlink_path):
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if os.path.islink(symlink_path):
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os.remove(symlink_path)
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else:
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raise ValueError("Attempting to overwrite built image: %s" %
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symlink_path)
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os.symlink(image_path, symlink_path)
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def BuildSuperEmpty():
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framework_dict = common.LoadDictionaryFromFile(
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os.path.join(OPTIONS.product_out_framework, "misc_info.txt"))
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vendor_dict = common.LoadDictionaryFromFile(
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os.path.join(OPTIONS.product_out_vendor, "misc_info.txt"))
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# Regenerate super_empty.img if both partial builds enable DAP. If only the
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# the vendor build enables DAP, the vendor build's existing super_empty.img
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# will be reused. If only the framework build should enable DAP, super_empty
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# should be included in the --framework_images flag to copy the existing
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# super_empty.img from the framework build.
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if (framework_dict.get("use_dynamic_partitions") == "true") and (
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vendor_dict.get("use_dynamic_partitions") == "true"):
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logger.info("Building super_empty.img.")
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merged_dict = dict(vendor_dict)
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merged_dict.update(
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common.MergeDynamicPartitionInfoDicts(
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framework_dict=framework_dict, vendor_dict=vendor_dict))
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output_super_empty_path = os.path.join(OPTIONS.product_out_vendor,
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"super_empty.img")
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build_super_image.BuildSuperImage(merged_dict, output_super_empty_path)
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def BuildVBMeta():
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logger.info("Building vbmeta.img.")
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framework_dict = common.LoadDictionaryFromFile(
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os.path.join(OPTIONS.product_out_framework, "misc_info.txt"))
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vendor_dict = common.LoadDictionaryFromFile(
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os.path.join(OPTIONS.product_out_vendor, "misc_info.txt"))
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merged_dict = dict(vendor_dict)
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if OPTIONS.framework_misc_info_keys:
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for key in common.LoadListFromFile(OPTIONS.framework_misc_info_keys):
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merged_dict[key] = framework_dict[key]
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# Build vbmeta.img using partitions in product_out_vendor.
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partitions = {}
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for partition in common.AVB_PARTITIONS:
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partition_path = os.path.join(OPTIONS.product_out_vendor,
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"%s.img" % partition)
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if os.path.exists(partition_path):
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partitions[partition] = partition_path
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# vbmeta_partitions includes the partitions that should be included into
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# top-level vbmeta.img, which are the ones that are not included in any
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# chained VBMeta image plus the chained VBMeta images themselves.
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vbmeta_partitions = common.AVB_PARTITIONS[:]
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for partition in common.AVB_VBMETA_PARTITIONS:
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chained_partitions = merged_dict.get("avb_%s" % partition, "").strip()
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if chained_partitions:
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partitions[partition] = os.path.join(OPTIONS.product_out_vendor,
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"%s.img" % partition)
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vbmeta_partitions = [
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item for item in vbmeta_partitions
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if item not in chained_partitions.split()
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]
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vbmeta_partitions.append(partition)
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output_vbmeta_path = os.path.join(OPTIONS.product_out_vendor, "vbmeta.img")
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OPTIONS.info_dict = merged_dict
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common.BuildVBMeta(output_vbmeta_path, partitions, "vbmeta",
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vbmeta_partitions)
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def MergeBuilds():
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CreateImageSymlinks()
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BuildSuperEmpty()
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if OPTIONS.build_vbmeta:
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BuildVBMeta()
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def main():
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common.InitLogging()
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def option_handler(o, a):
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if o == "--framework_images":
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OPTIONS.framework_images = [i.strip() for i in a.split(",")]
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elif o == "--product_out_framework":
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OPTIONS.product_out_framework = a
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elif o == "--product_out_vendor":
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OPTIONS.product_out_vendor = a
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elif o == "--build_vbmeta":
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OPTIONS.build_vbmeta = True
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elif o == "--framework_misc_info_keys":
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OPTIONS.framework_misc_info_keys = a
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else:
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return False
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return True
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args = common.ParseOptions(
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sys.argv[1:],
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__doc__,
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extra_long_opts=[
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"framework_images=",
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"product_out_framework=",
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"product_out_vendor=",
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"build_vbmeta",
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"framework_misc_info_keys=",
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],
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extra_option_handler=option_handler)
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if (args or OPTIONS.product_out_framework is None or
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OPTIONS.product_out_vendor is None):
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common.Usage(__doc__)
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sys.exit(1)
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MergeBuilds()
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if __name__ == "__main__":
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main()
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