Add aosp_arm64_ab for generic system image for A/B-ready devices

aosp_arm64_ab is added as a product to build a generic system image for
all devices with ARM64 and A/B ready partitions. For now, it only
supports sailfish/marlin devices because following items are not yet
split.

- fstab
- overlays
- sepolicy

Bug: 35653062
Test: build and flash it to sailfish (or marlin)

$ source build/envsetup.sh; choosecombo 1 sailfish userdebug
$ ENABLE_EARLY_MOUNT=true ENABLE_TREBLE=true m -j 80
$ fastboot flashall
(For now, the two ENABLE_* are required to install  *.rc and *.prop
files into vendor partition. This restriction will be removed in the
future.)

$ source build/envsetup.sh; choosecombo 1 aosp_arm64_ab userdebug
$ m -j 80 systemimage
$ fastboot flash system out/target/product/generic_arm64_ab/system.img
$ fastboot -w reboot

Change-Id: Ia91163f2d51e90a488c9451cba23242887ea82ba

target/board/generic_arm64_ab/BoardConfig.mk

@@ -0,0 +1,90 @@
+#
+# 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.
+
+# Bootloader is not part of generic AOSP image
+TARGET_NO_BOOTLOADER := true
+
+# Kernel is also not part of generic AOSP image
+TARGET_NO_KERNEL := true
+
+# system.img is always ext4 with sparse option
+TARGET_USERIMAGES_USE_EXT4 := true
+TARGET_USERIMAGES_SPARSE_EXT_DISABLED := false
+TARGET_USES_MKE2FS := true
+
+# Enable dex pre-opt to speed up initial boot
+ifeq ($(HOST_OS),linux)
+  ifeq ($(WITH_DEXPREOPT),)
+    WITH_DEXPREOPT := true
+    WITH_DEXPREOPT_PIC := true
+    ifneq ($(TARGET_BUILD_VARIANT),user)
+      # Retain classes.dex in APK's for non-user builds
+      DEX_PREOPT_DEFAULT := nostripping
+    endif
+  endif
+endif
+
+# Generic AOSP image always requires separate vendor.img
+BOARD_USES_VENDORIMAGE := true
+TARGET_COPY_OUT_VENDOR := vendor
+
+# Generic AOSP image does NOT support HWC1
+TARGET_USES_HWC2 := true
+
+BOARD_SEPOLICY_DIRS += build/target/board/generic/sepolicy
+
+# TODO(jiyong): Remove these two. These are required in order to remove
+# board-specific sysprops from system.img. This should be replaced with
+# a more meaningful build flags such as BOARD_SYSPROP_SPLIT.
+ENABLE_TREBLE := true
+BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4
+
+TARGET_ARCH := arm64
+TARGET_ARCH_VARIANT := armv8-a
+TARGET_CPU_ABI := arm64-v8a
+TARGET_CPU_ABI2 :=
+TARGET_CPU_VARIANT := generic
+
+TARGET_2ND_ARCH := arm
+TARGET_2ND_ARCH_VARIANT := armv7-a-neon
+TARGET_2ND_CPU_ABI := armeabi-v7a
+TARGET_2ND_CPU_ABI2 := armeabi
+# TODO(jiyong) can we set krait here?
+TARGET_2ND_CPU_VARIANT := cortex-a15
+
+TARGET_USES_64_BIT_BINDER := true
+
+# Enable A/B update
+TARGET_NO_RECOVERY := true
+BOARD_USES_RECOVERY_AS_BOOT := true
+BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
+
+# TODO(b/35603549): this is currently set to 2.5GB to support sailfish/marlin
+# Fix this!
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 2147483648
+
+# TODO(b/35790399): remove when b/35790399 is fixed.
+BOARD_NAND_SPARE_SIZE := 0
+BOARD_FLASH_BLOCK_SIZE := 512
+
+###############################################################################
+# Below are sailfish/marlin specific configs.
+# Must be moved after early-mount is supported.
+###############################################################################
+BOARD_SEPOLICY_DIRS += device/google/marlin/sepolicy

target/product/AndroidProducts.mk

@@ -42,6 +42,7 @@ PRODUCT_MAKEFILES := \
     $(LOCAL_DIR)/aosp_mips.mk \
     $(LOCAL_DIR)/full_mips.mk \
     $(LOCAL_DIR)/aosp_arm64.mk \
+    $(LOCAL_DIR)/aosp_arm64_ab.mk \
     $(LOCAL_DIR)/aosp_mips64.mk \
     $(LOCAL_DIR)/aosp_x86_64.mk
 else
@@ -58,6 +59,7 @@ PRODUCT_MAKEFILES := \
     $(LOCAL_DIR)/aosp_mips.mk \
     $(LOCAL_DIR)/full_mips.mk \
     $(LOCAL_DIR)/aosp_arm64.mk \
+    $(LOCAL_DIR)/aosp_arm64_ab.mk \
     $(LOCAL_DIR)/aosp_mips64.mk \
     $(LOCAL_DIR)/aosp_x86_64.mk \
     $(LOCAL_DIR)/sdk_phone_armv7.mk \

target/product/aosp_arm64_ab.mk

@@ -0,0 +1,121 @@
+#
+# 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.
+#
+
+# PRODUCT_PROPERTY_OVERRIDES cannot be used here because sysprops will be at
+# /vendor/[build|default].prop when build split is on. In order to have sysprops
+# on the generic system image, place them in build/make/target/board/generic_arm64_ab/
+# system.prop.
+
+PRODUCT_COPY_FILES := \
+    device/generic/goldfish/data/etc/apns-conf.xml:system/etc/apns-conf.xml \
+    device/generic/goldfish/camera/media_profiles.xml:system/etc/media_profiles.xml \
+    frameworks/av/media/libstagefright/data/media_codecs_google_audio.xml:system/etc/media_codecs_google_audio.xml \
+    frameworks/av/media/libstagefright/data/media_codecs_google_telephony.xml:system/etc/media_codecs_google_telephony.xml \
+    frameworks/av/media/libstagefright/data/media_codecs_google_video.xml:system/etc/media_codecs_google_video.xml \
+    device/generic/goldfish/camera/media_codecs.xml:system/etc/media_codecs.xml \
+
+# TODO(jiyong): remove sailfish/marlin rc and fstab files. They should be in
+# /vendor/etc/init after b/35269867
+PRODUCT_COPY_FILES += \
+    device/google/marlin/fstab.common:root/fstab.sailfish \
+    device/google/marlin/init.recovery.common.rc:root/init.recovery.sailfish.rc \
+
+PRODUCT_COPY_FILES += \
+    device/google/marlin/fstab.common:root/fstab.marlin \
+    device/google/marlin/init.recovery.common.rc:root/init.recovery.marlin.rc \
+
+# For now, let's use marlin bootanimation as the default boot animation
+PRODUCT_COPY_FILES += \
+    vendor/google/products/marlin/bootanimation-1440-256col.zip:system/media/bootanimation.zip
+
+# TODO(jiyong): remove this marlin-specific overlay when b/35742444 is fixed.
+PRODUCT_PACKAGE_OVERLAYS := \
+    device/google/marlin/overlay
+
+# Some of HAL interface libraries are automatically added by the dependencies from
+# the framework. However, we list them all here to make it explicit and prevent
+# possible mistake.
+PRODUCT_PACKAGES := \
+    android.dvr.composer@1.0 \
+    android.hardware.audio@2.0 \
+    android.hardware.audio.common@2.0 \
+    android.hardware.audio.common@2.0-util \
+    android.hardware.audio.effect@2.0 \
+    android.hardware.biometrics.fingerprint@2.1 \
+    android.hardware.bluetooth@1.0 \
+    android.hardware.boot@1.0 \
+    android.hardware.broadcastradio@1.0 \
+    android.hardware.broadcastradio@1.1 \
+    android.hardware.camera.common@1.0 \
+    android.hardware.camera.device@1.0 \
+    android.hardware.camera.device@3.2 \
+    android.hardware.camera.provider@2.4 \
+    android.hardware.configstore@1.0 \
+    android.hardware.contexthub@1.0 \
+    android.hardware.drm@1.0 \
+    android.hardware.gatekeeper@1.0 \
+    android.hardware.gnss@1.0 \
+    android.hardware.graphics.allocator@2.0 \
+    android.hardware.graphics.common@1.0 \
+    android.hardware.graphics.composer@2.1 \
+    android.hardware.graphics.mapper@2.0 \
+    android.hardware.ir@1.0 \
+    android.hardware.keymaster@3.0 \
+    android.hardware.light@2.0 \
+    android.hardware.media@1.0 \
+    android.hardware.media.omx@1.0 \
+    android.hardware.media.omx@1.0-utils \
+    android.hardware.memtrack@1.0 \
+    android.hardware.nfc@1.0 \
+    android.hardware.power@1.0 \
+    android.hardware.radio@1.0 \
+    android.hardware.radio.deprecated@1.0 \
+    android.hardware.sensors@1.0 \
+    android.hardware.soundtrigger@2.0 \
+    android.hardware.thermal@1.0 \
+    android.hardware.tv.cec@1.0 \
+    android.hardware.tv.input@1.0 \
+    android.hardware.usb@1.0 \
+    android.hardware.vibrator@1.0 \
+    android.hardware.vr@1.0 \
+    android.hardware.wifi@1.0 \
+    android.hidl.allocator@1.0 \
+    android.hidl.base@1.0 \
+    android.hidl.manager@1.0 \
+    android.hidl.memory@1.0 \
+
+PRODUCT_PACKAGES += \
+    libxml2 \
+    libtinyalsa \
+    libtinycompress \
+    cplay
+
+PRODUCT_SYSTEM_VERITY_PARTITION := /dev/block/bootdevice/by-name/system
+
+AB_OTA_UPDATER := true
+AB_OTA_PARTITIONS := system
+PRODUCT_PACKAGES += \
+    update_engine \
+    update_verifier
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/verity.mk)
+
+PRODUCT_NAME := aosp_arm64_ab
+PRODUCT_DEVICE := generic_arm64_ab
+PRODUCT_BRAND := Android
+PRODUCT_MODEL := AOSP on ARM64