diff --git a/core/Makefile b/core/Makefile
index af3c4cb..d6d4bf2 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -579,6 +579,8 @@
 	@echo "make $@: ignoring dependencies"
 	$(hide) $(MKBOOTFS) -d $(TARGET_OUT) $(TARGET_ROOT_OUT) | $(MINIGZIP) > $(INSTALLED_RAMDISK_TARGET)
 
+INSTALLED_BOOTIMAGE_TARGET := $(PRODUCT_OUT)/boot.img
+
 ifneq ($(strip $(TARGET_NO_KERNEL)),true)
 
 # -----------------------------------------------------------------
@@ -617,8 +619,6 @@
     --os_version $(PLATFORM_VERSION) \
     --os_patch_level $(PLATFORM_SECURITY_PATCH)
 
-INSTALLED_BOOTIMAGE_TARGET := $(PRODUCT_OUT)/boot.img
-
 # BOARD_USES_RECOVERY_AS_BOOT = true must have BOARD_BUILD_SYSTEM_ROOT_IMAGE = true.
 ifeq ($(BOARD_USES_RECOVERY_AS_BOOT),true)
 ifneq ($(BOARD_BUILD_SYSTEM_ROOT_IMAGE),true)
@@ -701,6 +701,13 @@
 endif # BOARD_USES_RECOVERY_AS_BOOT
 
 else	# TARGET_NO_KERNEL
+ifdef BOARD_PREBUILT_BOOTIMAGE
+ifneq ($(BOARD_BUILD_SYSTEM_ROOT_IMAGE),true)
+# Remove when b/63676296 is resolved.
+$(error Prebuilt bootimage is only supported for AB targets)
+endif
+$(eval $(call copy-one-file,$(BOARD_PREBUILT_BOOTIMAGE),$(INSTALLED_BOOTIMAGE_TARGET)))
+else
 INTERNAL_KERNEL_CMDLINE := $(strip $(BOARD_KERNEL_CMDLINE))
 # HACK: The top-level targets depend on the bootimage.  Not all targets
 # can produce a bootimage, though, and emulator targets need the ramdisk
@@ -709,6 +716,7 @@
 #       kernel-less inputs.
 INSTALLED_BOOTIMAGE_TARGET := $(INSTALLED_RAMDISK_TARGET)
 endif
+endif
 
 # -----------------------------------------------------------------
 # NOTICE files
@@ -2482,6 +2490,10 @@
 	$(hide) mkdir -p $(zip_root)/IMAGES
 	$(hide) cp $(INSTALLED_VENDORIMAGE_TARGET) $(zip_root)/IMAGES/
 endif
+ifdef BOARD_PREBUILT_BOOTIMAGE
+	$(hide) mkdir -p $(zip_root)/IMAGES
+	$(hide) cp $(INSTALLED_BOOTIMAGE_TARGET) $(zip_root)/IMAGES/
+endif
 ifdef BOARD_PREBUILT_DTBOIMAGE
 	$(hide) mkdir -p $(zip_root)/PREBUILT_IMAGES
 	$(hide) cp $(INSTALLED_DTBOIMAGE_TARGET) $(zip_root)/PREBUILT_IMAGES/
diff --git a/core/build_id.mk b/core/build_id.mk
index ff4d013..0e8e2cf 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,4 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-export BUILD_ID=OC-MR1
+export BUILD_ID=MASTER
diff --git a/target/board/generic_arm64_a/BoardConfig.mk b/target/board/generic_arm64_a/BoardConfig.mk
index 4ecfee6..e92f84d 100644
--- a/target/board/generic_arm64_a/BoardConfig.mk
+++ b/target/board/generic_arm64_a/BoardConfig.mk
@@ -17,6 +17,9 @@
 # Common boardconfig settings for generic AOSP products targetting mobile
 # (phone/table) devices.
 
+# System properties
+TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
+
 # Bootloader is not part of generic AOSP image
 TARGET_NO_BOOTLOADER := true
 
diff --git a/target/board/generic_arm64_a/system.prop b/target/board/generic_arm64_a/system.prop
deleted file mode 100644
index e69de29..0000000
--- a/target/board/generic_arm64_a/system.prop
+++ /dev/null
diff --git a/target/board/generic_arm64_ab/BoardConfig.mk b/target/board/generic_arm64_ab/BoardConfig.mk
index d1bba39..83e44a5 100644
--- a/target/board/generic_arm64_ab/BoardConfig.mk
+++ b/target/board/generic_arm64_ab/BoardConfig.mk
@@ -17,6 +17,9 @@
 # Common boardconfig settings for generic AOSP products targetting mobile
 # (phone/table) devices.
 
+# System properties
+TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
+
 # Bootloader is not part of generic AOSP image
 TARGET_NO_BOOTLOADER := true
 
diff --git a/target/board/generic_arm64_ab/system.prop b/target/board/generic_arm64_ab/system.prop
deleted file mode 100644
index e69de29..0000000
--- a/target/board/generic_arm64_ab/system.prop
+++ /dev/null
diff --git a/target/board/generic_arm_a/BoardConfig.mk b/target/board/generic_arm_a/BoardConfig.mk
index db3e394..0391248 100644
--- a/target/board/generic_arm_a/BoardConfig.mk
+++ b/target/board/generic_arm_a/BoardConfig.mk
@@ -17,6 +17,9 @@
 # Common boardconfig settings for generic AOSP products targetting mobile
 # (phone/table) devices.
 
+# System properties
+TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
+
 # Bootloader is not part of generic AOSP image
 TARGET_NO_BOOTLOADER := true
 
diff --git a/target/board/generic_arm_a/system.prop b/target/board/generic_arm_a/system.prop
deleted file mode 100644
index e69de29..0000000
--- a/target/board/generic_arm_a/system.prop
+++ /dev/null
diff --git a/target/board/generic_arm_ab/BoardConfig.mk b/target/board/generic_arm_ab/BoardConfig.mk
new file mode 100644
index 0000000..58d597b
--- /dev/null
+++ b/target/board/generic_arm_ab/BoardConfig.mk
@@ -0,0 +1,68 @@
+#
+# 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.
+
+# System properties
+TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
+
+# 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
+TARGET_COPY_OUT_VENDOR := vendor
+
+# Generic AOSP image does NOT support HWC1
+TARGET_USES_HWC2 := true
+
+TARGET_ARCH := arm
+TARGET_ARCH_VARIANT := armv7-a-neon
+TARGET_CPU_ABI := armeabi-v7a
+TARGET_CPU_ABI2 := armeabi
+TARGET_CPU_VARIANT := generic
+
+# Enable A/B update
+TARGET_NO_RECOVERY := true
+BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
+
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1610612736
+
+# TODO(b/35790399): remove when b/35790399 is fixed.
+BOARD_NAND_SPARE_SIZE := 0
+BOARD_FLASH_BLOCK_SIZE := 512
+
+BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED := true
diff --git a/target/board/generic_x86_64_a/BoardConfig.mk b/target/board/generic_x86_64_a/BoardConfig.mk
new file mode 100644
index 0000000..bd1f750
--- /dev/null
+++ b/target/board/generic_x86_64_a/BoardConfig.mk
@@ -0,0 +1,68 @@
+#
+# 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.
+
+# System properties
+TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
+
+# 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
+TARGET_COPY_OUT_VENDOR := vendor
+
+# Generic AOSP image does NOT support HWC1
+TARGET_USES_HWC2 := true
+
+TARGET_CPU_ABI := x86_64
+TARGET_ARCH := x86_64
+TARGET_ARCH_VARIANT := x86_64
+
+TARGET_2ND_CPU_ABI := x86
+TARGET_2ND_ARCH := x86
+TARGET_2ND_ARCH_VARIANT := x86_64
+
+TARGET_USES_64_BIT_BINDER := true
+
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1610612736	# 1.5 GB
+
+# TODO(b/35790399): remove when b/35790399 is fixed.
+BOARD_NAND_SPARE_SIZE := 0
+BOARD_FLASH_BLOCK_SIZE := 512
+
+BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED := true
diff --git a/target/board/generic_x86_64_ab/BoardConfig.mk b/target/board/generic_x86_64_ab/BoardConfig.mk
new file mode 100644
index 0000000..41bd7b7
--- /dev/null
+++ b/target/board/generic_x86_64_ab/BoardConfig.mk
@@ -0,0 +1,71 @@
+#
+# 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.
+
+# System properties
+TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
+
+# 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
+TARGET_COPY_OUT_VENDOR := vendor
+
+# Generic AOSP image does NOT support HWC1
+TARGET_USES_HWC2 := true
+
+TARGET_CPU_ABI := x86_64
+TARGET_ARCH := x86_64
+TARGET_ARCH_VARIANT := x86_64
+
+TARGET_2ND_CPU_ABI := x86
+TARGET_2ND_ARCH := x86
+TARGET_2ND_ARCH_VARIANT := x86_64
+
+TARGET_USES_64_BIT_BINDER := true
+
+# Enable A/B update
+BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
+
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1610612736	# 1.5 GB
+
+# TODO(b/35790399): remove when b/35790399 is fixed.
+BOARD_NAND_SPARE_SIZE := 0
+BOARD_FLASH_BLOCK_SIZE := 512
+
+BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED := true
diff --git a/target/board/generic_x86_a/BoardConfig.mk b/target/board/generic_x86_a/BoardConfig.mk
new file mode 100644
index 0000000..4ca6ebe
--- /dev/null
+++ b/target/board/generic_x86_a/BoardConfig.mk
@@ -0,0 +1,62 @@
+#
+# 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.
+
+# System properties
+TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
+
+# 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
+TARGET_COPY_OUT_VENDOR := vendor
+
+# Generic AOSP image does NOT support HWC1
+TARGET_USES_HWC2 := true
+
+TARGET_CPU_ABI := x86
+TARGET_ARCH := x86
+TARGET_ARCH_VARIANT := x86
+
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1610612736	# 1.5 GB
+
+# TODO(b/35790399): remove when b/35790399 is fixed.
+BOARD_NAND_SPARE_SIZE := 0
+BOARD_FLASH_BLOCK_SIZE := 512
+
+BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED := true
diff --git a/target/board/generic_x86_ab/BoardConfig.mk b/target/board/generic_x86_ab/BoardConfig.mk
new file mode 100644
index 0000000..6a28667
--- /dev/null
+++ b/target/board/generic_x86_ab/BoardConfig.mk
@@ -0,0 +1,65 @@
+#
+# 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.
+
+# System properties
+TARGET_SYSTEM_PROP := build/make/target/board/treble_system.prop
+
+# 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
+TARGET_COPY_OUT_VENDOR := vendor
+
+# Generic AOSP image does NOT support HWC1
+TARGET_USES_HWC2 := true
+
+TARGET_CPU_ABI := x86
+TARGET_ARCH := x86
+TARGET_ARCH_VARIANT := x86
+
+# Enable A/B update
+BOARD_BUILD_SYSTEM_ROOT_IMAGE := true
+
+BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1610612736	# 1.5 GB
+
+# TODO(b/35790399): remove when b/35790399 is fixed.
+BOARD_NAND_SPARE_SIZE := 0
+BOARD_FLASH_BLOCK_SIZE := 512
+
+BOARD_PROPERTY_OVERRIDES_SPLIT_ENABLED := true
diff --git a/target/board/treble_system.prop b/target/board/treble_system.prop
new file mode 100644
index 0000000..bedf10c
--- /dev/null
+++ b/target/board/treble_system.prop
@@ -0,0 +1,2 @@
+# GSI always generate dex pre-opt in system image
+ro.cp_system_other_odex=0
diff --git a/target/product/AndroidProducts.mk b/target/product/AndroidProducts.mk
index 285fc39..9e2adee 100644
--- a/target/product/AndroidProducts.mk
+++ b/target/product/AndroidProducts.mk
@@ -52,8 +52,11 @@
     $(LOCAL_DIR)/generic_mips.mk \
     $(LOCAL_DIR)/aosp_arm.mk \
     $(LOCAL_DIR)/aosp_arm_a.mk \
+    $(LOCAL_DIR)/aosp_arm_ab.mk \
     $(LOCAL_DIR)/full.mk \
     $(LOCAL_DIR)/aosp_x86.mk \
+    $(LOCAL_DIR)/aosp_x86_a.mk \
+    $(LOCAL_DIR)/aosp_x86_ab.mk \
     $(LOCAL_DIR)/aosp_x86_arm.mk \
     $(LOCAL_DIR)/full_x86.mk \
     $(LOCAL_DIR)/aosp_mips.mk \
@@ -63,6 +66,8 @@
     $(LOCAL_DIR)/aosp_arm64_ab.mk \
     $(LOCAL_DIR)/aosp_mips64.mk \
     $(LOCAL_DIR)/aosp_x86_64.mk \
+    $(LOCAL_DIR)/aosp_x86_64_a.mk \
+    $(LOCAL_DIR)/aosp_x86_64_ab.mk \
     $(LOCAL_DIR)/sdk_phone_armv7.mk \
     $(LOCAL_DIR)/sdk_phone_x86.mk \
     $(LOCAL_DIR)/sdk_phone_mips.mk \
diff --git a/target/product/aosp_arm_ab.mk b/target/product/aosp_arm_ab.mk
new file mode 100644
index 0000000..423d38f
--- /dev/null
+++ b/target/product/aosp_arm_ab.mk
@@ -0,0 +1,35 @@
+#
+# Copyright (C) 2017 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# PRODUCT_PROPERTY_OVERRIDES cannot be used here because sysprops will be at
+# /vendor/[build|default].prop when build split is on. In order to have sysprops
+# on the generic system image, place them in build/make/target/board/generic_arm_a/
+# system.prop.
+
+include build/make/target/product/treble_common.mk
+
+AB_OTA_UPDATER := true
+AB_OTA_PARTITIONS := system
+PRODUCT_PACKAGES += \
+    update_engine \
+    update_verifier
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
+
+PRODUCT_NAME := aosp_arm_ab
+PRODUCT_DEVICE := generic_arm_ab
+PRODUCT_BRAND := Android
+PRODUCT_MODEL := AOSP on ARM32
diff --git a/target/product/aosp_x86_64_a.mk b/target/product/aosp_x86_64_a.mk
new file mode 100644
index 0000000..eab8b4a
--- /dev/null
+++ b/target/product/aosp_x86_64_a.mk
@@ -0,0 +1,30 @@
+#
+# Copyright (C) 2017 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# PRODUCT_PROPERTY_OVERRIDES cannot be used here because sysprops will be at
+# /vendor/[build|default].prop when build split is on. In order to have sysprops
+# on the generic system image, place them in build/make/target/board/generic_arm64_a/
+# system.prop.
+
+include build/make/target/product/treble_common.mk
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
+
+PRODUCT_NAME := aosp_x86_64_a
+PRODUCT_DEVICE := generic_x86_64_a
+PRODUCT_BRAND := Android
+PRODUCT_MODEL := AOSP on x86_64
diff --git a/target/product/aosp_x86_64_ab.mk b/target/product/aosp_x86_64_ab.mk
new file mode 100644
index 0000000..4fb2acf
--- /dev/null
+++ b/target/product/aosp_x86_64_ab.mk
@@ -0,0 +1,36 @@
+#
+# Copyright (C) 2017 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# PRODUCT_PROPERTY_OVERRIDES cannot be used here because sysprops will be at
+# /vendor/[build|default].prop when build split is on. In order to have sysprops
+# on the generic system image, place them in build/make/target/board/generic_arm64_a/
+# system.prop.
+
+include build/make/target/product/treble_common.mk
+
+AB_OTA_UPDATER := true
+AB_OTA_PARTITIONS := system
+PRODUCT_PACKAGES += \
+    update_engine \
+    update_verifier
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
+
+PRODUCT_NAME := aosp_x86_64_ab
+PRODUCT_DEVICE := generic_x86_64_ab
+PRODUCT_BRAND := Android
+PRODUCT_MODEL := AOSP on x86_64
diff --git a/target/product/aosp_x86_a.mk b/target/product/aosp_x86_a.mk
new file mode 100644
index 0000000..df84107
--- /dev/null
+++ b/target/product/aosp_x86_a.mk
@@ -0,0 +1,29 @@
+#
+# Copyright (C) 2017 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# PRODUCT_PROPERTY_OVERRIDES cannot be used here because sysprops will be at
+# /vendor/[build|default].prop when build split is on. In order to have sysprops
+# on the generic system image, place them in build/make/target/board/generic_arm64_a/
+# system.prop.
+
+include build/make/target/product/treble_common.mk
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
+
+PRODUCT_NAME := aosp_x86_a
+PRODUCT_DEVICE := generic_x86_a
+PRODUCT_BRAND := Android
+PRODUCT_MODEL := AOSP on x86
diff --git a/target/product/aosp_x86_ab.mk b/target/product/aosp_x86_ab.mk
new file mode 100644
index 0000000..4bd63ab
--- /dev/null
+++ b/target/product/aosp_x86_ab.mk
@@ -0,0 +1,35 @@
+#
+# Copyright (C) 2017 The Android Open-Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# PRODUCT_PROPERTY_OVERRIDES cannot be used here because sysprops will be at
+# /vendor/[build|default].prop when build split is on. In order to have sysprops
+# on the generic system image, place them in build/make/target/board/generic_arm64_a/
+# system.prop.
+
+include build/make/target/product/treble_common.mk
+
+AB_OTA_UPDATER := true
+AB_OTA_PARTITIONS := system
+PRODUCT_PACKAGES += \
+    update_engine \
+    update_verifier
+
+$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
+
+PRODUCT_NAME := aosp_x86_ab
+PRODUCT_DEVICE := generic_x86_ab
+PRODUCT_BRAND := Android
+PRODUCT_MODEL := AOSP on x86