target/board/treble_common.mk

#
# Copyright (C) 2017 The Android Open-Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

# Common boardconfig settings for generic AOSP products targetting mobile
# (phone/table) devices.

# VNDK
BOARD_VNDK_VERSION := current

# Properties
TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED := true

# Bootloader, kernel and recovery are not part of generic AOSP image
TARGET_NO_BOOTLOADER := true
TARGET_NO_KERNEL := true

# system.img is always ext4 with sparse option
# GSI also includes make_f2fs to support userdata parition in f2fs
# for some devices
TARGET_USERIMAGES_USE_EXT4 := true
TARGET_USERIMAGES_USE_F2FS := true
TARGET_USERIMAGES_SPARSE_EXT_DISABLED := false

# Enable dynamic system image size and reserved 64MB in it.
BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE := 67108864

# Generic AOSP image always requires separate vendor.img
TARGET_COPY_OUT_VENDOR := vendor

# Android generic system image always create metadata partition
BOARD_USES_METADATA_PARTITION := true

# Set emulator framebuffer display device buffer count to 3
NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3

# Audio
USE_XML_AUDIO_POLICY_CONF := 1

# Android Verified Boot (AVB):
#   1) Sets BOARD_AVB_ENABLE to sign the GSI image.
#   2) Sets AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED (--flag 2) in
#      vbmeta.img to disable AVB verification.
#
# To disable AVB for GSI, use the vbmeta.img and the GSI together.
# To enable AVB for GSI, include the GSI public key into the device-specific
# vbmeta.img.
BOARD_AVB_ENABLE := true
BOARD_AVB_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
BOARD_AVB_MAKE_VBMETA_IMAGE_ARGS += --flag 2

# Enable chain partition for system.
BOARD_AVB_SYSTEM_KEY_PATH := external/avb/test/data/testkey_rsa2048.pem
BOARD_AVB_SYSTEM_ALGORITHM := SHA256_RSA2048
BOARD_AVB_SYSTEM_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
BOARD_AVB_SYSTEM_ROLLBACK_INDEX_LOCATION := 1