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
diff --git a/target/board/generic_arm64_ab/BoardConfig.mk b/target/board/generic_arm64_ab/BoardConfig.mk
new file mode 100644
index 0000000..6da54dc
--- /dev/null
+++ b/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