diff --git a/core/Makefile b/core/Makefile
index 453a013..e666dec 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1060,9 +1060,16 @@
 BUILT_RAMDISK_16K_TARGET := $(PRODUCT_OUT)/ramdisk_16k.img
 RAMDISK_16K_STAGING_DIR := $(call intermediates-dir-for,PACKAGING,depmod_ramdisk_16k)
 
+ifneq ($(BOARD_SYSTEM_KERNEL_MODULES),)
+SYSTEM_DLKM_MODULE_PATTERNS := $(foreach path,$(BOARD_SYSTEM_KERNEL_MODULES),%/$(notdir $(path)))
+
+endif
+
+# For non-GKI modules, strip them before install. As debug symbols take up
+# significant space.
 $(foreach \
   file,\
-  $(BOARD_KERNEL_MODULES_16K),\
+  $(filter-out $(SYSTEM_DLKM_MODULE_PATTERNS),$(BOARD_KERNEL_MODULES_16K)),\
   $(eval \
     $(call copy-and-strip-kernel-module,\
       $(file),\
@@ -1071,6 +1078,20 @@
   ) \
 )
 
+# For GKI modules, copy as-is without stripping, because stripping would
+# remove the signature of kernel modules, and GKI modules must be signed
+# for kernel to load them.
+$(foreach \
+  file,\
+  $(filter $(SYSTEM_DLKM_MODULE_PATTERNS),$(BOARD_KERNEL_MODULES_16K)),\
+  $(eval \
+    $(call copy-one-file,\
+      $(file),\
+      $(RAMDISK_16K_STAGING_DIR)/lib/modules/0.0/$(notdir $(file)) \
+    ) \
+  ) \
+)
+
 BOARD_VENDOR_RAMDISK_FRAGMENT.16K.PREBUILT := $(BUILT_RAMDISK_16K_TARGET)
 
 $(BUILT_RAMDISK_16K_TARGET): $(DEPMOD) $(MKBOOTFS) $(EXTRACT_KERNEL) $(COMPRESSION_COMMAND_DEPS)
@@ -5049,8 +5070,11 @@
 APEX_INFO_FILE := $(APEX_OUT)/apex-info-list.xml
 
 # apexd_host scans/activates APEX files and writes /apex/apex-info-list.xml
+# Note that `@echo $(PRIVATE_APEX_FILES)` line is added to trigger the rule when the APEX list is changed.
+$(APEX_INFO_FILE): PRIVATE_APEX_FILES := $(apex_files)
 $(APEX_INFO_FILE): $(HOST_OUT_EXECUTABLES)/apexd_host $(apex_files)
 	@echo "Extracting apexes..."
+	@echo $(PRIVATE_APEX_FILES) > /dev/null
 	@rm -rf $(APEX_OUT)
 	@mkdir -p $(APEX_OUT)
 	$< --vendor_path $(TARGET_OUT_VENDOR) \
diff --git a/core/definitions.mk b/core/definitions.mk
index b6b0d69..ebc6c6e 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2955,7 +2955,7 @@
 ifeq ($(HOST_OS),linux)
 # Runs appcompat and store logs in $(PRODUCT_OUT)/appcompat
 define extract-package
-$(AAPT2) dump resources $@ | awk -F ' |=' '/^Package/{print $$3}' >> $(PRODUCT_OUT)/appcompat/$(PRIVATE_MODULE).log &&
+$(AAPT2) dump resources $@ | awk -F ' |=' '/^Package/{print $$3; exit}' >> $(PRODUCT_OUT)/appcompat/$(PRIVATE_MODULE).log &&
 endef
 define appcompat-header
 $(hide) \
diff --git a/core/packaging/flags.mk b/core/packaging/flags.mk
index ca319ce..a7e8d35 100644
--- a/core/packaging/flags.mk
+++ b/core/packaging/flags.mk
@@ -72,42 +72,28 @@
 # $(1): built aconfig flags file (out)
 # $(2): installed aconfig flags file (out)
 # $(3): input aconfig files for the partition (in)
-# $(4): file format, passed to `aconfig dump` (in)
-# $(5): text placed in aconfig file when no flags present (out)
 define generate-partition-aconfig-flag-file
 $(eval $(strip $(1)): PRIVATE_OUT := $(strip $(1)))
 $(eval $(strip $(1)): PRIVATE_IN := $(strip $(3)))
 $(strip $(1)): $(ACONFIG) $(strip $(3))
 	mkdir -p $$(dir $$(PRIVATE_OUT))
 	$$(if $$(PRIVATE_IN), \
-		$$(ACONFIG) dump --format $(4) --out $$(PRIVATE_OUT) \
+		$$(ACONFIG) dump --format protobuf --out $$(PRIVATE_OUT) \
 			$$(addprefix --cache ,$$(PRIVATE_IN)), \
-		echo $(5) > $$(PRIVATE_OUT) \
+		echo -n > $$(PRIVATE_OUT) \
 	)
 $(call copy-one-file, $(1), $(2))
 endef
 
 
 $(foreach partition, $(_FLAG_PARTITIONS), \
-	$(eval aconfig_flag_summaries_textproto.$(partition) := $(PRODUCT_OUT)/$(partition)/etc/aconfig_flags.textproto) \
 	$(eval aconfig_flag_summaries_protobuf.$(partition) := $(PRODUCT_OUT)/$(partition)/etc/aconfig_flags.pb) \
 	$(eval $(call generate-partition-aconfig-flag-file, \
-				$(TARGET_OUT_FLAGS)/$(partition)/aconfig_flags.textproto, \
-				$(aconfig_flag_summaries_textproto.$(partition)), \
-				$(sort $(foreach m,$(call register-names-for-partition, $(partition)), \
-					$(ALL_MODULES.$(m).ACONFIG_FILES) \
-				)), \
-				textproto, \
-				"# No aconfig flags" \
-	)) \
-	$(eval $(call generate-partition-aconfig-flag-file, \
 				$(TARGET_OUT_FLAGS)/$(partition)/aconfig_flags.pb, \
 				$(aconfig_flag_summaries_protobuf.$(partition)), \
 				$(sort $(foreach m,$(call register-names-for-partition, $(partition)), \
 					$(ALL_MODULES.$(m).ACONFIG_FILES) \
 				)), \
-				protobuf, \
-				"" \
 	)) \
 )
 
@@ -117,7 +103,6 @@
 required_flags_files := \
 		$(sort $(foreach partition, $(filter $(IMAGES_TO_BUILD), $(_FLAG_PARTITIONS)), \
 			$(build_flag_summaries.$(partition)) \
-			$(aconfig_flag_summaries_textproto.$(partition)) \
 			$(aconfig_flag_summaries_protobuf.$(partition)) \
 		))
 
@@ -133,7 +118,6 @@
 required_flags_files:=
 $(foreach partition, $(_FLAG_PARTITIONS), \
 	$(eval build_flag_summaries.$(partition):=) \
-	$(eval aconfig_flag_summaries_textproto.$(partition):=) \
 	$(eval aconfig_flag_summaries_protobuf.$(partition):=) \
 )
 
diff --git a/core/release_config.bzl b/core/release_config.bzl
index a2f59e6..0c08858 100644
--- a/core/release_config.bzl
+++ b/core/release_config.bzl
@@ -11,6 +11,9 @@
 # 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.
+"""
+Export build flags (with values) to make.
+"""
 
 load("//build/bazel/utils:schema_validation.bzl", "validate")
 
@@ -73,7 +76,16 @@
 }
 
 def flag(name, partitions, default):
-    "Declare a flag."
+    """Declare a flag.
+
+    Args:
+      name: name of the flag
+      partitions: the partitions where this should be recorded.
+      default: the default value of the flag.
+
+    Returns:
+      A dictionary containing the flag declaration.
+    """
     if not partitions:
         fail("At least 1 partition is required")
     if not name.startswith("RELEASE_"):
@@ -96,14 +108,29 @@
     }
 
 def value(name, value):
-    "Define the flag value for a particular configuration."
+    """Define the flag value for a particular configuration.
+
+    Args:
+      name: The name of the flag.
+      value: The value for the flag.
+
+    Returns:
+      A dictionary containing the name and value to be used.
+    """
     return {
         "name": name,
         "value": value,
     }
 
 def _format_value(val):
-    "Format the starlark type correctly for make"
+    """Format the starlark type correctly for make.
+
+    Args:
+      val: The value to format
+
+    Returns:
+      The value, formatted correctly for make.
+    """
     if type(val) == "NoneType":
         return ""
     elif type(val) == "bool":
@@ -112,7 +139,15 @@
         return val
 
 def release_config(all_flags, all_values):
-    "Return the make variables that should be set for this release config."
+    """Return the make variables that should be set for this release config.
+
+    Args:
+      all_flags: A list of flag objects (from flag() calls).
+      all_values: A list of value objects (from value() calls).
+
+    Returns:
+      A dictionary of {name: value} variables for make.
+    """
     validate(all_flags, _all_flags_schema)
     validate(all_values, _all_values_schema)
 
diff --git a/core/soong_config.mk b/core/soong_config.mk
index 5bf06dc..23e017e 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -8,6 +8,7 @@
 ifndef AFDO_PROFILES
 # Set AFDO_PROFILES
 -include vendor/google_data/pgo_profile/sampling/afdo_profiles.mk
+include toolchain/pgo-profiles/sampling/afdo_profiles.mk
 else
 $(error AFDO_PROFILES can only be set from soong_config.mk. For product-specific fdo_profiles, please use PRODUCT_AFDO_PROFILES)
 endif
@@ -318,7 +319,7 @@
 $(call add_json_list, BuildVersionTags,    $(BUILD_VERSION_TAGS))
 
 $(call add_json_str, ReleaseVersion,    $(_RELEASE_VERSION))
-$(call add_json_str, ReleaseAconfigValueSets,    $(RELEASE_ACONFIG_VALUE_SETS))
+$(call add_json_list, ReleaseAconfigValueSets,    $(RELEASE_ACONFIG_VALUE_SETS))
 $(call add_json_str, ReleaseAconfigFlagDefaultPermission,    $(RELEASE_ACONFIG_FLAG_DEFAULT_PERMISSION))
 
 $(call add_json_bool, ReleaseDefaultModuleBuildFromSource,   $(RELEASE_DEFAULT_MODULE_BUILD_FROM_SOURCE))
diff --git a/target/board/emulator_arm/AndroidBoard.mk b/target/board/emulator_arm/AndroidBoard.mk
deleted file mode 100644
index 7911f61..0000000
--- a/target/board/emulator_arm/AndroidBoard.mk
+++ /dev/null
@@ -1 +0,0 @@
-LOCAL_PATH := $(call my-dir)
diff --git a/target/board/emulator_arm/BoardConfig.mk b/target/board/emulator_arm/BoardConfig.mk
deleted file mode 100644
index 287824f..0000000
--- a/target/board/emulator_arm/BoardConfig.mk
+++ /dev/null
@@ -1,37 +0,0 @@
-# Copyright (C) 2020 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.
-#
-
-# arm emulator specific definitions
-TARGET_ARCH := arm
-TARGET_ARCH_VARIANT := armv7-a-neon
-TARGET_CPU_VARIANT := generic
-TARGET_CPU_ABI := armeabi-v7a
-TARGET_CPU_ABI2 := armeabi
-
-include build/make/target/board/BoardConfigGsiCommon.mk
-include build/make/target/board/BoardConfigEmuCommon.mk
-
-BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800
-
-# Wifi.
-BOARD_WLAN_DEVICE           := emulator
-BOARD_HOSTAPD_DRIVER        := NL80211
-BOARD_WPA_SUPPLICANT_DRIVER := NL80211
-BOARD_HOSTAPD_PRIVATE_LIB   := lib_driver_cmd_simulated
-BOARD_WPA_SUPPLICANT_PRIVATE_LIB := lib_driver_cmd_simulated
-WPA_SUPPLICANT_VERSION      := VER_0_8_X
-WIFI_DRIVER_FW_PATH_PARAM   := "/dev/null"
-WIFI_DRIVER_FW_PATH_STA     := "/dev/null"
-WIFI_DRIVER_FW_PATH_AP      := "/dev/null"
diff --git a/target/board/emulator_arm/device.mk b/target/board/emulator_arm/device.mk
deleted file mode 100644
index af023eb..0000000
--- a/target/board/emulator_arm/device.mk
+++ /dev/null
@@ -1,18 +0,0 @@
-#
-# Copyright (C) 2020 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_SOONG_NAMESPACES += device/generic/goldfish # for libwifi-hal-emu
-PRODUCT_SOONG_NAMESPACES += device/generic/goldfish-opengl # for goldfish deps.
diff --git a/target/board/emulator_arm/system_ext.prop b/target/board/emulator_arm/system_ext.prop
deleted file mode 100644
index 64829f3..0000000
--- a/target/board/emulator_arm/system_ext.prop
+++ /dev/null
@@ -1,5 +0,0 @@
-#
-# system.prop for generic sdk
-#
-
-rild.libpath=/vendor/lib/libreference-ril.so
diff --git a/target/board/emulator_x86/BoardConfig.mk b/target/board/emulator_x86/BoardConfig.mk
deleted file mode 100644
index 8f79166..0000000
--- a/target/board/emulator_x86/BoardConfig.mk
+++ /dev/null
@@ -1,40 +0,0 @@
-# Copyright (C) 2020 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.
-#
-
-# x86 emulator specific definitions
-TARGET_CPU_ABI := x86
-TARGET_ARCH := x86
-TARGET_ARCH_VARIANT := x86
-
-TARGET_PRELINK_MODULE := false
-
-include build/make/target/board/BoardConfigGsiCommon.mk
-include build/make/target/board/BoardConfigEmuCommon.mk
-
-# Resize to 4G to accommodate ASAN and CTS
-BOARD_USERDATAIMAGE_PARTITION_SIZE := 4294967296
-
-BOARD_SEPOLICY_DIRS += device/generic/goldfish/sepolicy/x86
-
-# Wifi.
-BOARD_WLAN_DEVICE           := emulator
-BOARD_HOSTAPD_DRIVER        := NL80211
-BOARD_WPA_SUPPLICANT_DRIVER := NL80211
-BOARD_HOSTAPD_PRIVATE_LIB   := lib_driver_cmd_simulated
-BOARD_WPA_SUPPLICANT_PRIVATE_LIB := lib_driver_cmd_simulated
-WPA_SUPPLICANT_VERSION      := VER_0_8_X
-WIFI_DRIVER_FW_PATH_PARAM   := "/dev/null"
-WIFI_DRIVER_FW_PATH_STA     := "/dev/null"
-WIFI_DRIVER_FW_PATH_AP      := "/dev/null"
diff --git a/target/board/emulator_x86/device.mk b/target/board/emulator_x86/device.mk
deleted file mode 100644
index 8a9d8da..0000000
--- a/target/board/emulator_x86/device.mk
+++ /dev/null
@@ -1,27 +0,0 @@
-#
-# Copyright (C) 2020 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_SOONG_NAMESPACES += device/generic/goldfish # for libwifi-hal-emu
-PRODUCT_SOONG_NAMESPACES += device/generic/goldfish-opengl # for goldfish deps.
-
-ifdef NET_ETH0_STARTONBOOT
-  PRODUCT_VENDOR_PROPERTIES += net.eth0.startonboot=1
-endif
-
-# Ensure we package the BIOS files too.
-PRODUCT_HOST_PACKAGES += \
-	bios.bin \
-	vgabios-cirrus.bin \
diff --git a/target/board/emulator_x86/system_ext.prop b/target/board/emulator_x86/system_ext.prop
deleted file mode 100644
index 64829f3..0000000
--- a/target/board/emulator_x86/system_ext.prop
+++ /dev/null
@@ -1,5 +0,0 @@
-#
-# system.prop for generic sdk
-#
-
-rild.libpath=/vendor/lib/libreference-ril.so
diff --git a/target/board/emulator_x86_arm/BoardConfig.mk b/target/board/emulator_x86_arm/BoardConfig.mk
deleted file mode 100644
index 21fdbc8..0000000
--- a/target/board/emulator_x86_arm/BoardConfig.mk
+++ /dev/null
@@ -1,52 +0,0 @@
-# Copyright (C) 2020 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.
-#
-
-# x86 emulator specific definitions
-TARGET_CPU_ABI := x86
-TARGET_ARCH := x86
-TARGET_ARCH_VARIANT := x86
-
-TARGET_NATIVE_BRIDGE_ARCH := arm
-TARGET_NATIVE_BRIDGE_ARCH_VARIANT := armv7-a-neon
-TARGET_NATIVE_BRIDGE_CPU_VARIANT := generic
-TARGET_NATIVE_BRIDGE_ABI := armeabi-v7a armeabi
-
-BUILD_BROKEN_DUP_RULES := true
-
-#
-# The inclusion order below is important.
-# The settings in latter makefiles overwrite those in the former.
-#
-include build/make/target/board/BoardConfigMainlineCommon.mk
-include build/make/target/board/BoardConfigEmuCommon.mk
-
-# the settings differ from BoardConfigMainlineCommon.mk
-BOARD_USES_SYSTEM_OTHER_ODEX :=
-
-# Resize to 4G to accommodate ASAN and CTS
-BOARD_USERDATAIMAGE_PARTITION_SIZE := 4294967296
-
-BOARD_SEPOLICY_DIRS += device/generic/goldfish/sepolicy/x86
-
-# Wifi.
-BOARD_WLAN_DEVICE           := emulator
-BOARD_HOSTAPD_DRIVER        := NL80211
-BOARD_WPA_SUPPLICANT_DRIVER := NL80211
-BOARD_HOSTAPD_PRIVATE_LIB   := lib_driver_cmd_simulated
-BOARD_WPA_SUPPLICANT_PRIVATE_LIB := lib_driver_cmd_simulated
-WPA_SUPPLICANT_VERSION      := VER_0_8_X
-WIFI_DRIVER_FW_PATH_PARAM   := "/dev/null"
-WIFI_DRIVER_FW_PATH_STA     := "/dev/null"
-WIFI_DRIVER_FW_PATH_AP      := "/dev/null"
diff --git a/target/board/emulator_x86_arm/device.mk b/target/board/emulator_x86_arm/device.mk
deleted file mode 100644
index af023eb..0000000
--- a/target/board/emulator_x86_arm/device.mk
+++ /dev/null
@@ -1,18 +0,0 @@
-#
-# Copyright (C) 2020 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_SOONG_NAMESPACES += device/generic/goldfish # for libwifi-hal-emu
-PRODUCT_SOONG_NAMESPACES += device/generic/goldfish-opengl # for goldfish deps.
diff --git a/target/board/emulator_x86_arm/system_ext.prop b/target/board/emulator_x86_arm/system_ext.prop
deleted file mode 100644
index 64829f3..0000000
--- a/target/board/emulator_x86_arm/system_ext.prop
+++ /dev/null
@@ -1,5 +0,0 @@
-#
-# system.prop for generic sdk
-#
-
-rild.libpath=/vendor/lib/libreference-ril.so
diff --git a/target/product/AndroidProducts.mk b/target/product/AndroidProducts.mk
index 8787c59..c3bc14b 100644
--- a/target/product/AndroidProducts.mk
+++ b/target/product/AndroidProducts.mk
@@ -68,9 +68,7 @@
     $(LOCAL_DIR)/ndk.mk \
     $(LOCAL_DIR)/sdk.mk \
     $(LOCAL_DIR)/sdk_phone_arm64.mk \
-    $(LOCAL_DIR)/sdk_phone_armv7.mk \
     $(LOCAL_DIR)/sdk_phone_x86_64.mk \
-    $(LOCAL_DIR)/sdk_phone_x86.mk \
 
 endif
 
diff --git a/target/product/handheld_system.mk b/target/product/handheld_system.mk
index 6c93dd7..00b62bc 100644
--- a/target/product/handheld_system.mk
+++ b/target/product/handheld_system.mk
@@ -40,6 +40,7 @@
     BuiltInPrintService \
     CalendarProvider \
     cameraserver \
+    com.android.nfcservices \
     CameraExtensionsProxy \
     CaptivePortalLogin \
     CertInstaller \
@@ -56,7 +57,6 @@
     MmsService \
     MtpService \
     MusicFX \
-    NfcNci \
     PacProcessor \
     preinstalled-packages-platform-handheld-system.xml \
     PrintRecommendationService \
diff --git a/target/product/sdk_phone_armv7.mk b/target/product/sdk_phone_armv7.mk
deleted file mode 100644
index 293b1ea..0000000
--- a/target/product/sdk_phone_armv7.mk
+++ /dev/null
@@ -1,66 +0,0 @@
-#
-# Copyright (C) 2007 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_USE_DYNAMIC_PARTITIONS := true
-
-# This is a build configuration for a full-featured build of the
-# Open-Source part of the tree. It's geared toward a US-centric
-# build quite specifically for the emulator, and might not be
-# entirely appropriate to inherit from for on-device configurations.
-
-# Enable mainline checking for exact this product name
-ifeq (sdk_phone_armv7,$(TARGET_PRODUCT))
-PRODUCT_ENFORCE_ARTIFACT_PATH_REQUIREMENTS := relaxed
-endif
-
-#
-# All components inherited here go to system image
-#
-$(call inherit-product, $(SRC_TARGET_DIR)/product/generic_system.mk)
-
-#
-# All components inherited here go to system_ext image
-#
-$(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_system_ext.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_system_ext.mk)
-
-#
-# All components inherited here go to product image
-#
-$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_product.mk)
-
-#
-# All components inherited here go to vendor image
-#
-$(call inherit-product-if-exists, build/make/target/product/ramdisk_stub.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/emulator_vendor.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/board/emulator_arm/device.mk)
-
-# keep this apk for sdk targets for now
-PRODUCT_PACKAGES += \
-    EmulatorSmokeTests
-
-
-# Overrides
-PRODUCT_BRAND := Android
-PRODUCT_NAME := sdk_phone_armv7
-PRODUCT_DEVICE := emulator_arm
-PRODUCT_MODEL := Android SDK built for arm
-# Disable <uses-library> checks for SDK product. It lacks some libraries (e.g.
-# RadioConfigLib), which makes it impossible to translate their module names to
-# library name, so the check fails.
-PRODUCT_BROKEN_VERIFY_USES_LIBRARIES := true
-
-PRODUCT_NEXT_RELEASE_HIDE_FLAGGED_API := true
diff --git a/target/product/sdk_phone_x86.mk b/target/product/sdk_phone_x86.mk
deleted file mode 100644
index 90cd8d5..0000000
--- a/target/product/sdk_phone_x86.mk
+++ /dev/null
@@ -1,61 +0,0 @@
-#
-# Copyright (C) 2009 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-PRODUCT_USE_DYNAMIC_PARTITIONS := true
-
-# This is a build configuration for a full-featured build of the
-# Open-Source part of the tree. It's geared toward a US-centric
-# build quite specifically for the emulator, and might not be
-# entirely appropriate to inherit from for on-device configurations.
-
-#
-# All components inherited here go to system image
-#
-$(call inherit-product, $(SRC_TARGET_DIR)/product/generic_system.mk)
-
-# Enable mainline checking for exact this product name
-ifeq (sdk_phone_x86,$(TARGET_PRODUCT))
-PRODUCT_ENFORCE_ARTIFACT_PATH_REQUIREMENTS := relaxed
-endif
-
-#
-# All components inherited here go to system_ext image
-#
-$(call inherit-product, $(SRC_TARGET_DIR)/product/handheld_system_ext.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/telephony_system_ext.mk)
-
-#
-# All components inherited here go to product image
-#
-$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_product.mk)
-
-#
-# All components inherited here go to vendor image
-#
-$(call inherit-product-if-exists, device/generic/goldfish/x86-vendor.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/emulator_vendor.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/board/emulator_x86/device.mk)
-
-# Overrides
-PRODUCT_BRAND := Android
-PRODUCT_NAME := sdk_phone_x86
-PRODUCT_DEVICE := emulator_x86
-PRODUCT_MODEL := Android SDK built for x86
-# Disable <uses-library> checks for SDK product. It lacks some libraries (e.g.
-# RadioConfigLib), which makes it impossible to translate their module names to
-# library name, so the check fails.
-PRODUCT_BROKEN_VERIFY_USES_LIBRARIES := true
-
-PRODUCT_NEXT_RELEASE_HIDE_FLAGGED_API := true
diff --git a/tools/aconfig/fake_device_config/Android.bp b/tools/aconfig/fake_device_config/Android.bp
index 5f62ae9..7420aa8 100644
--- a/tools/aconfig/fake_device_config/Android.bp
+++ b/tools/aconfig/fake_device_config/Android.bp
@@ -15,7 +15,7 @@
 java_library {
 	name: "fake_device_config",
 	srcs: ["src/**/*.java"],
-	sdk_version: "core_platform",
-    host_supported: true,
+	sdk_version: "core_current",
+	host_supported: true,
 }
 
diff --git a/tools/releasetools/img_from_target_files.py b/tools/releasetools/img_from_target_files.py
index a3e3681..b7a5ad8 100755
--- a/tools/releasetools/img_from_target_files.py
+++ b/tools/releasetools/img_from_target_files.py
@@ -67,6 +67,7 @@
 OPTIONS.use_fastboot_info = True
 OPTIONS.build_super_image = None
 
+
 def LoadOptions(input_file):
   """Loads information from input_file to OPTIONS.
 
@@ -105,6 +106,13 @@
   common.RunAndCheckOutput(cmd)
 
 
+def LocatePartitionEntry(partition_name, namelist):
+  for subdir in ["IMAGES", "PREBUILT_IMAGES", "RADIO"]:
+    entry_name = os.path.join(subdir, partition_name + ".img")
+    if entry_name in namelist:
+      return entry_name
+
+
 def EntriesForUserImages(input_file):
   """Returns the user images entries to be copied.
 
@@ -122,13 +130,18 @@
   ]
   if OPTIONS.use_fastboot_info:
     entries.append('META/fastboot-info.txt:fastboot-info.txt')
+  ab_partitions = []
   with zipfile.ZipFile(input_file) as input_zip:
     namelist = input_zip.namelist()
+    if "META/ab_partitions.txt" in namelist:
+      ab_partitions = input_zip.read(
+          "META/ab_partitions.txt").decode().strip().split()
   if 'PREBUILT_IMAGES/kernel_16k' in namelist:
     entries.append('PREBUILT_IMAGES/kernel_16k:kernel_16k')
   if 'PREBUILT_IMAGES/ramdisk_16k.img' in namelist:
     entries.append('PREBUILT_IMAGES/ramdisk_16k.img:ramdisk_16k.img')
 
+  visited_partitions = set(OPTIONS.dynamic_partition_list)
   for image_path in [name for name in namelist if name.startswith('IMAGES/')]:
     image = os.path.basename(image_path)
     if OPTIONS.bootable_only and image not in ('boot.img', 'recovery.img', 'bootloader', 'init_boot.img'):
@@ -143,7 +156,14 @@
         continue
       if image in dynamic_images:
         continue
+    partition_name = image.rstrip(".img")
+    visited_partitions.add(partition_name)
     entries.append('{}:{}'.format(image_path, image))
+  for part in [part for part in ab_partitions if part not in visited_partitions]:
+    entry = LocatePartitionEntry(part, namelist)
+    image = os.path.basename(entry)
+    if entry is not None:
+      entries.append('{}:{}'.format(entry, image))
   return entries