diff --git a/common/strings.mk b/common/strings.mk
index ce6d6fb..ba20e27 100644
--- a/common/strings.mk
+++ b/common/strings.mk
@@ -88,7 +88,7 @@
 endef
 
 ###########################################################
-## Convert "a=b c= d e = f" into "a=b c=d e=f"
+## Convert "a=b c= d e = f = g h=" into "a=b c=d e= f=g h="
 ##
 ## $(1): list to collapse
 ## $(2): if set, separator word; usually "=", ":", or ":="
@@ -96,11 +96,29 @@
 ###########################################################
 
 define collapse-pairs
+$(strip \
 $(eval _cpSEP := $(strip $(if $(2),$(2),=)))\
-$(strip $(subst $(space)$(_cpSEP)$(space),$(_cpSEP),$(strip \
-    $(subst $(_cpSEP), $(_cpSEP) ,$(1)))$(space)))
+$(eval _cpLHS :=)\
+$(eval _cpRET :=)\
+$(foreach w,$(subst $(space)$(_cpSEP),$(_cpSEP),$(strip \
+            $(subst $(_cpSEP),$(space)$(_cpSEP)$(space),$(1)))),\
+  $(if $(findstring $(_cpSEP),$(w)),\
+    $(eval _cpRET += $(_cpLHS))$(eval _cpLHS := $(w)),\
+    $(eval _cpRET += $(_cpLHS)$(w))$(eval _cpLHS :=)))\
+$(if $(_cpLHS),$(_cpRET)$(space)$(_cpLHS),$(_cpRET))\
+$(eval _cpSEP :=)\
+$(eval _cpLHS :=)\
+$(eval _cpRET :=))
 endef
 
+# Sanity check for collapse-pairs.
+ifneq (a=b c=d e= f=g h=,$(call collapse-pairs,a=b c= d e = f = g h=))
+  $(error collapse-pairs sanity check failure)
+endif
+ifneq (a:=b c:=d e:=f g:=h,$(call collapse-pairs,a:=b c:= d e :=f g := h,:=))
+  $(error collapse-pairs sanity check failure)
+endif
+
 ###########################################################
 ## Given a list of pairs, if multiple pairs have the same
 ## first components, keep only the first pair.
diff --git a/core/Makefile b/core/Makefile
index 15f7681..6809d24 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -2080,8 +2080,7 @@
 	$(call append-recovery-ui-properties,$(PRIVATE_RECOVERY_UI_PROPERTIES),$@)
 
 ifeq (truetrue,$(strip $(BUILDING_VENDOR_BOOT_IMAGE))$(strip $(AB_OTA_UPDATER)))
-  INTERNAL_RECOVERYIMAGE_ARGS := \
-      --kernel $(recovery_kernel) --ramdisk $(recovery_ramdisk)
+  INTERNAL_RECOVERYIMAGE_ARGS := --ramdisk $(recovery_ramdisk)
 ifdef GENERIC_KERNEL_CMDLINE
   INTERNAL_RECOVERYIMAGE_ARGS += --cmdline "$(GENERIC_KERNEL_CMDLINE)"
 endif
@@ -2158,10 +2157,10 @@
 # $(2): kernel file
 define build-recoveryimage-target
   $(if $(filter true,$(PRODUCT_SUPPORTS_VBOOT)), \
-    $(MKBOOTIMG) --kernel $(2) $(MKBOOTIMG_KERNEL_ARG) $(INTERNAL_RECOVERYIMAGE_ARGS) \
+    $(MKBOOTIMG) --kernel $(2) $(INTERNAL_RECOVERYIMAGE_ARGS) \
                  $(INTERNAL_MKBOOTIMG_VERSION_ARGS) $(BOARD_RECOVERY_MKBOOTIMG_ARGS) \
                  --output $(1).unsigned, \
-    $(MKBOOTIMG) --kernel $(2) $(MKBOOTIMG_KERNEL_ARG) $(INTERNAL_RECOVERYIMAGE_ARGS) \
+    $(MKBOOTIMG) --kernel $(2) $(INTERNAL_RECOVERYIMAGE_ARGS) \
                  $(INTERNAL_MKBOOTIMG_VERSION_ARGS) $(BOARD_RECOVERY_MKBOOTIMG_ARGS) \
                  --output $(1))
   $(if $(filter true,$(PRODUCT_SUPPORTS_BOOT_SIGNER)),\
@@ -3472,8 +3471,12 @@
 endef
 
 ifdef INSTALLED_BOOTIMAGE_TARGET
+# multiple hashes for an image are not yet supported, fortunately this
+# only arises for GKI where the boot descriptor can be left out
+ifeq ($(strip $(BOARD_KERNEL_BINARIES)),)
 $(eval $(call check-and-set-avb-args,boot))
 endif
+endif
 
 ifdef INSTALLED_VENDOR_BOOTIMAGE_TARGET
 $(eval $(call check-and-set-avb-args,vendor_boot))
@@ -4128,6 +4131,8 @@
 endif
 ifeq ($(INSTALLED_BOOTIMAGE_TARGET),)
 	$(hide) echo "no_boot=true" >> $@
+else
+	echo "boot_images=$(foreach b,$(INSTALLED_BOOTIMAGE_TARGET),$(notdir $(b)))" >> $@
 endif
 ifneq ($(INSTALLED_VENDOR_BOOTIMAGE_TARGET),)
 	echo "vendor_boot=true" >> $@
@@ -4887,6 +4892,19 @@
 	$(hide) find $(TARGET_OUT_COVERAGE) | sort >$(PRIVATE_LIST_FILE)
 	$(hide) $(SOONG_ZIP) -d -o $@ -C $(TARGET_OUT_COVERAGE) -l $(PRIVATE_LIST_FILE)
 
+#------------------------------------------------------------------
+# Export the LLVM profile data tool and dependencies for Clang coverage processing
+#
+ifeq (true,$(CLANG_COVERAGE))
+  LLVM_PROFDATA := $(LLVM_PREBUILTS_BASE)/linux-x86/$(LLVM_PREBUILTS_VERSION)/bin/llvm-profdata
+  LIBCXX := $(LLVM_PREBUILTS_BASE)/linux-x86/$(LLVM_PREBUILTS_VERSION)/lib64/libc++.so.1
+  PROFDATA_ZIP := $(PRODUCT_OUT)/llvm-profdata.zip
+  $(PROFDATA_ZIP): $(SOONG_ZIP)
+	$(hide) $(SOONG_ZIP) -d -o $@ -C $(LLVM_PREBUILTS_BASE)/linux-x86/$(LLVM_PREBUILTS_VERSION) -f $(LLVM_PROFDATA) -f $(LIBCXX)
+
+  $(call dist-for-goals,droidcore,$(PROFDATA_ZIP))
+endif
+
 # -----------------------------------------------------------------
 # A zip of the Android Apps. Not keeping full path so that we don't
 # include product names when distributing
diff --git a/core/config.mk b/core/config.mk
index ba77990..d184708 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -1149,19 +1149,6 @@
 TARGET_SDK_VERSIONS_WITHOUT_JAVA_18_SUPPORT := $(call numbers_less_than,24,$(TARGET_AVAILABLE_SDK_VERSIONS))
 TARGET_SDK_VERSIONS_WITHOUT_JAVA_19_SUPPORT := $(call numbers_less_than,30,$(TARGET_AVAILABLE_SDK_VERSIONS))
 
-ifndef INTERNAL_PLATFORM_PRIVATE_API_FILE
-INTERNAL_PLATFORM_PRIVATE_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/private.txt
-endif
-ifndef INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE
-INTERNAL_PLATFORM_PRIVATE_DEX_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/private-dex.txt
-endif
-ifndef INTERNAL_PLATFORM_SYSTEM_PRIVATE_API_FILE
-INTERNAL_PLATFORM_SYSTEM_PRIVATE_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/system-private.txt
-endif
-ifndef INTERNAL_PLATFORM_SYSTEM_PRIVATE_DEX_API_FILE
-INTERNAL_PLATFORM_SYSTEM_PRIVATE_DEX_API_FILE := $(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING/system-private-dex.txt
-endif
-
 # Missing optional uses-libraries so that the platform doesn't create build rules that depend on
 # them.
 INTERNAL_PLATFORM_MISSING_USES_LIBRARIES := \
diff --git a/core/package_internal.mk b/core/package_internal.mk
index c0aa2a7..59e0701 100644
--- a/core/package_internal.mk
+++ b/core/package_internal.mk
@@ -100,19 +100,19 @@
 # Determine whether auto-RRO is enabled for this package.
 enforce_rro_enabled :=
 ifneq (,$(filter *, $(PRODUCT_ENFORCE_RRO_TARGETS)))
-  # * means all system APKs, so enable conditionally based on module path.
+  # * means all system and system_ext APKs, so enable conditionally based on module path.
+  # Note that modules in PRODUCT_ENFORCE_RRO_EXEMPTED_TARGETS are excluded even if it is '*'
 
   # Note that base_rules.mk has not yet been included, so it's likely that only
   # one of LOCAL_MODULE_PATH and the LOCAL_X_MODULE flags has been set.
   ifeq (,$(LOCAL_MODULE_PATH))
-    non_system_module := $(filter true,\
+    non_rro_target_module := $(filter true,\
         $(LOCAL_ODM_MODULE) \
         $(LOCAL_OEM_MODULE) \
         $(LOCAL_PRODUCT_MODULE) \
-        $(LOCAL_SYSTEM_EXT_MODULE) \
         $(LOCAL_PROPRIETARY_MODULE) \
         $(LOCAL_VENDOR_MODULE))
-    enforce_rro_enabled := $(if $(non_system_module),,true)
+    enforce_rro_enabled := $(if $(non_rro_target_module),,true)
   else ifneq ($(filter $(TARGET_OUT)/%,$(LOCAL_MODULE_PATH)),)
     enforce_rro_enabled := true
   endif
@@ -120,6 +120,12 @@
   enforce_rro_enabled := true
 endif
 
+# TODO(b/150820813) Some modules depend on static overlay, remove this after eliminating the dependency.
+ifneq (,$(filter $(LOCAL_PACKAGE_NAME), $(PRODUCT_ENFORCE_RRO_EXEMPTED_TARGETS)))
+  enforce_rro_enabled :=
+endif
+
+
 product_package_overlays := $(strip \
     $(wildcard $(foreach dir, $(PRODUCT_PACKAGE_OVERLAYS), \
       $(addprefix $(dir)/, $(LOCAL_RESOURCE_DIR)))))
diff --git a/core/product.mk b/core/product.mk
index 8e82f71..ea9be72 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -193,6 +193,9 @@
 # Package list to apply enforcing RRO.
 _product_list_vars += PRODUCT_ENFORCE_RRO_TARGETS
 
+# Packages to skip auto-generating RROs for when PRODUCT_ENFORCE_RRO_TARGETS is set to *.
+_product_list_vars += PRODUCT_ENFORCE_RRO_EXEMPTED_TARGETS
+
 _product_list_vars += PRODUCT_SDK_ATREE_FILES
 _product_list_vars += PRODUCT_SDK_ADDON_NAME
 _product_list_vars += PRODUCT_SDK_ADDON_COPY_FILES
@@ -237,6 +240,10 @@
 # List of system_server jars delivered via apex. Format = <apex name>:<jar name>.
 _product_list_vars += PRODUCT_UPDATABLE_SYSTEM_SERVER_JARS
 
+# Additional system server jars to be appended at the end of the common list.
+# This is necessary to avoid jars reordering due to makefile inheritance order.
+_product_list_vars += PRODUCT_SYSTEM_SERVER_JARS_EXTRA
+
 # All of the apps that we force preopt, this overrides WITH_DEXPREOPT.
 _product_list_vars += PRODUCT_ALWAYS_PREOPT_EXTRACTED_APK
 _product_list_vars += PRODUCT_DEXPREOPT_SPEED_APPS
diff --git a/core/product_config.mk b/core/product_config.mk
index aabd472..699d62a 100644
--- a/core/product_config.mk
+++ b/core/product_config.mk
@@ -231,6 +231,9 @@
 # Extra boot jars must be appended at the end after common boot jars.
 PRODUCT_BOOT_JARS += $(PRODUCT_BOOT_JARS_EXTRA)
 
+# The extra system server jars must be appended at the end after common system server jars.
+PRODUCT_SYSTEM_SERVER_JARS += $(PRODUCT_SYSTEM_SERVER_JARS_EXTRA)
+
 ifndef PRODUCT_SYSTEM_NAME
   PRODUCT_SYSTEM_NAME := $(PRODUCT_NAME)
 endif
diff --git a/core/soong_config.mk b/core/soong_config.mk
index abf3888..cbc2dd1 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -80,6 +80,7 @@
 $(call add_json_list, DeviceResourceOverlays,            $(DEVICE_PACKAGE_OVERLAYS))
 $(call add_json_list, ProductResourceOverlays,           $(PRODUCT_PACKAGE_OVERLAYS))
 $(call add_json_list, EnforceRROTargets,                 $(PRODUCT_ENFORCE_RRO_TARGETS))
+$(call add_json_list, EnforceRROExemptedTargets,         $(PRODUCT_ENFORCE_RRO_EXEMPTED_TARGETS))
 $(call add_json_list, EnforceRROExcludedOverlays,        $(PRODUCT_ENFORCE_RRO_EXCLUDED_OVERLAYS))
 
 $(call add_json_str,  AAPTCharacteristics,               $(TARGET_AAPT_CHARACTERISTICS))
diff --git a/core/tasks/device-tests.mk b/core/tasks/device-tests.mk
index f071c7c..73fad7c 100644
--- a/core/tasks/device-tests.mk
+++ b/core/tasks/device-tests.mk
@@ -21,30 +21,38 @@
 # Create an artifact to include all test config files in device-tests.
 device-tests-configs-zip := $(PRODUCT_OUT)/device-tests_configs.zip
 my_host_shared_lib_for_device_tests := $(call copy-many-files,$(COMPATIBILITY.device-tests.HOST_SHARED_LIBRARY.FILES))
-$(device-tests-zip) : .KATI_IMPLICIT_OUTPUTS := $(device-tests-list-zip) $(device-tests-configs-zip)
+device_tests_host_shared_libs_zip := $(PRODUCT_OUT)/device-tests_host-shared-libs.zip
+
+$(device-tests-zip) : .KATI_IMPLICIT_OUTPUTS := $(device-tests-list-zip) $(device-tests-configs-zip) $(device_tests_host_shared_libs_zip)
 $(device-tests-zip) : PRIVATE_device_tests_list := $(PRODUCT_OUT)/device-tests_list
 $(device-tests-zip) : PRIVATE_HOST_SHARED_LIBS := $(my_host_shared_lib_for_device_tests)
+$(device-tests-zip) : PRIVATE_device_host_shared_libs_zip := $(device_tests_host_shared_libs_zip)
 $(device-tests-zip) : $(COMPATIBILITY.device-tests.FILES) $(my_host_shared_lib_for_device_tests) $(SOONG_ZIP)
+	rm -f $@-shared-libs.list
 	echo $(sort $(COMPATIBILITY.device-tests.FILES)) | tr " " "\n" > $@.list
 	grep $(HOST_OUT_TESTCASES) $@.list > $@-host.list || true
 	grep -e .*\\.config$$ $@-host.list > $@-host-test-configs.list || true
 	$(hide) for shared_lib in $(PRIVATE_HOST_SHARED_LIBS); do \
 	  echo $$shared_lib >> $@-host.list; \
+	  echo $$shared_lib >> $@-shared-libs.list; \
 	done
+	grep $(HOST_OUT_TESTCASES) $@-shared-libs.list > $@-host-shared-libs.list || true
 	grep $(TARGET_OUT_TESTCASES) $@.list > $@-target.list || true
 	grep -e .*\\.config$$ $@-target.list > $@-target-test-configs.list || true
 	$(hide) $(SOONG_ZIP) -d -o $@ -P host -C $(HOST_OUT) -l $@-host.list -P target -C $(PRODUCT_OUT) -l $@-target.list
 	$(hide) $(SOONG_ZIP) -d -o $(device-tests-configs-zip) \
 	  -P host -C $(HOST_OUT) -l $@-host-test-configs.list \
 	  -P target -C $(PRODUCT_OUT) -l $@-target-test-configs.list
+	$(SOONG_ZIP) -d -o $(PRIVATE_device_host_shared_libs_zip) \
+	  -P host -C $(HOST_OUT) -l $@-host-shared-libs.list
 	rm -f $(PRIVATE_device_tests_list)
 	$(hide) grep -e .*\\.config$$ $@-host.list | sed s%$(HOST_OUT)%host%g > $(PRIVATE_device_tests_list)
 	$(hide) grep -e .*\\.config$$ $@-target.list | sed s%$(PRODUCT_OUT)%target%g >> $(PRIVATE_device_tests_list)
 	$(hide) $(SOONG_ZIP) -d -o $(device-tests-list-zip) -C $(dir $@) -f $(PRIVATE_device_tests_list)
 	rm -f $@.list $@-host.list $@-target.list $@-host-test-configs.list $@-target-test-configs.list \
-	  $(PRIVATE_device_tests_list)
+	  $@-shared-libs.list $@-host-shared-libs.list $(PRIVATE_device_tests_list)
 
 device-tests: $(device-tests-zip)
-$(call dist-for-goals, device-tests, $(device-tests-zip) $(device-tests-list-zip) $(device-tests-configs-zip))
+$(call dist-for-goals, device-tests, $(device-tests-zip) $(device-tests-list-zip) $(device-tests-configs-zip) $(device_tests_host_shared_libs_zip))
 
 tests: device-tests
diff --git a/core/tasks/vts-core-tests.mk b/core/tasks/vts-core-tests.mk
index 33da020..4e83de5 100644
--- a/core/tasks/vts-core-tests.mk
+++ b/core/tasks/vts-core-tests.mk
@@ -21,16 +21,31 @@
 # Some repo may not include vts project.
 -include test/vts/tools/build/tasks/framework/vts_for_core_suite.mk
 
+# Copy kernel test modules to testcases directories
+kernel_test_host_out := $(HOST_OUT_TESTCASES)/vts_kernel_tests
+kernel_test_vts_out := $(HOST_OUT)/$(test_suite_name)/android-$(test_suite_name)/testcases/vts_kernel_tests
+kernel_test_modules := \
+    $(kselftest_modules) \
+    ltp \
+    $(ltp_packages)
+
+kernel_test_copy_pairs := \
+  $(call target-native-copy-pairs,$(kernel_test_modules),$(kernel_test_vts_out)) \
+  $(call target-native-copy-pairs,$(kernel_test_modules),$(kernel_test_host_out))
+
+copy_kernel_tests := $(call copy-many-files,$(kernel_test_copy_pairs))
+
+# PHONY target to be used to build and test `vts_kernel_tests` without building full vts
+.PHONY: vts_kernel_tests
+vts_kernel_tests: $(copy_kernel_tests)
+
 include $(BUILD_SYSTEM)/tasks/tools/compatibility.mk
 
+$(compatibility_zip): $(copy_kernel_tests)
+
 .PHONY: vts
 $(compatibility_zip): $(vts_test_artifact_paths)
 vts: $(compatibility_zip)
 $(call dist-for-goals, vts, $(compatibility_zip))
 
-# TODO(b/149249068): Remove vts-core phony target after it's removed from all
-# builders.
-.PHONY: vts-core
-vts-core: vts
-
 tests: vts
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 9227677..fd0edef 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -240,7 +240,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-      PLATFORM_SECURITY_PATCH := 2020-06-01
+      PLATFORM_SECURITY_PATCH := 2020-06-05
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH
 
diff --git a/target/board/emulator_arm64/BoardConfig.mk b/target/board/emulator_arm64/BoardConfig.mk
new file mode 100644
index 0000000..b34ccb4
--- /dev/null
+++ b/target/board/emulator_arm64/BoardConfig.mk
@@ -0,0 +1,77 @@
+# 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.
+#
+
+# arm64 emulator specific definitions
+TARGET_ARCH := arm64
+TARGET_ARCH_VARIANT := armv8-a
+TARGET_CPU_VARIANT := generic
+TARGET_CPU_ABI := arm64-v8a
+
+TARGET_2ND_ARCH := arm
+TARGET_2ND_CPU_ABI := armeabi-v7a
+TARGET_2ND_CPU_ABI2 := armeabi
+
+ifneq ($(TARGET_BUILD_APPS)$(filter cts sdk vts10,$(MAKECMDGOALS)),)
+# DO NOT USE
+# DO NOT USE
+#
+# This architecture / CPU variant must NOT be used for any 64 bit
+# platform builds. It is the lowest common denominator required
+# to build an unbundled application or cts for all supported 32 and 64 bit
+# platforms.
+#
+# If you're building a 64 bit platform (and not an application) the
+# ARM-v8 specification allows you to assume all the features available in an
+# armv7-a-neon CPU. You should set the following as 2nd arch/cpu variant:
+#
+# TARGET_2ND_ARCH_VARIANT := armv8-a
+# TARGET_2ND_CPU_VARIANT := generic
+#
+# DO NOT USE
+# DO NOT USE
+TARGET_2ND_ARCH_VARIANT := armv7-a-neon
+# DO NOT USE
+# DO NOT USE
+TARGET_2ND_CPU_VARIANT := generic
+# DO NOT USE
+# DO NOT USE
+else
+TARGET_2ND_ARCH_VARIANT := armv8-a
+TARGET_2ND_CPU_VARIANT := generic
+endif
+
+include build/make/target/board/BoardConfigGsiCommon.mk
+include build/make/target/board/BoardConfigEmuCommon.mk
+
+TARGET_NO_KERNEL := false
+TARGET_NO_VENDOR_BOOT := false
+BOARD_USES_RECOVERY_AS_BOOT := true
+
+BOARD_BOOTIMAGE_PARTITION_SIZE := 0x02000000
+BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800
+
+BOARD_BOOT_HEADER_VERSION := 3
+BOARD_MKBOOTIMG_ARGS += --header_version $(BOARD_BOOT_HEADER_VERSION)
+
+# Wifi.
+BOARD_WLAN_DEVICE           := emulator
+BOARD_HOSTAPD_DRIVER        := NL80211
+BOARD_WPA_SUPPLICANT_DRIVER := NL80211
+BOARD_HOSTAPD_PRIVATE_LIB   := lib_driver_cmd_simulated
+BOARD_WPA_SUPPLICANT_PRIVATE_LIB := lib_driver_cmd_simulated
+WPA_SUPPLICANT_VERSION      := VER_0_8_X
+WIFI_DRIVER_FW_PATH_PARAM   := "/dev/null"
+WIFI_DRIVER_FW_PATH_STA     := "/dev/null"
+WIFI_DRIVER_FW_PATH_AP      := "/dev/null"
diff --git a/target/board/emulator_arm64/device.mk b/target/board/emulator_arm64/device.mk
new file mode 100644
index 0000000..6753c11
--- /dev/null
+++ b/target/board/emulator_arm64/device.mk
@@ -0,0 +1,29 @@
+#
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Cuttlefish has GKI kernel prebuilts, so use those for the GKI boot.img.
+ifeq ($(TARGET_PREBUILT_KERNEL),)
+    LOCAL_KERNEL := device/google/cuttlefish_kernel/5.4-arm64/kernel
+else
+    LOCAL_KERNEL := $(TARGET_PREBUILT_KERNEL)
+endif
+
+PRODUCT_COPY_FILES += \
+    $(LOCAL_KERNEL):kernel
+
+# Adjust the Dalvik heap to be appropriate for a tablet.
+$(call inherit-product-if-exists, frameworks/base/build/tablet-dalvik-heap.mk)
+$(call inherit-product-if-exists, frameworks/native/build/tablet-dalvik-heap.mk)
diff --git a/target/board/emulator_arm64/system_ext.prop b/target/board/emulator_arm64/system_ext.prop
new file mode 100644
index 0000000..2f8f803
--- /dev/null
+++ b/target/board/emulator_arm64/system_ext.prop
@@ -0,0 +1,5 @@
+#
+# system.prop for emulator arm64 sdk
+#
+
+rild.libpath=/vendor/lib64/libreference-ril.so
diff --git a/target/board/generic_arm64/BoardConfig.mk b/target/board/generic_arm64/BoardConfig.mk
index a5264e4..d793c38 100644
--- a/target/board/generic_arm64/BoardConfig.mk
+++ b/target/board/generic_arm64/BoardConfig.mk
@@ -53,20 +53,23 @@
 endif
 
 include build/make/target/board/BoardConfigGsiCommon.mk
-include build/make/target/board/BoardConfigEmuCommon.mk
+
+BOARD_EXT4_SHARE_DUP_BLOCKS := true
 
 TARGET_NO_KERNEL := false
 TARGET_NO_VENDOR_BOOT := true
 BOARD_USES_RECOVERY_AS_BOOT := true
 
-BOARD_BOOTIMAGE_PARTITION_SIZE := 0x02000000
+BOARD_BOOTIMAGE_PARTITION_SIZE := 0x04000000
 BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800
 
 BOARD_BOOT_HEADER_VERSION := 3
 BOARD_MKBOOTIMG_ARGS += --header_version $(BOARD_BOOT_HEADER_VERSION)
 
-# Emulator system image is going to be used as GSI and some vendor still hasn't
-# cleaned up all device specific directories under root!
+BOARD_KERNEL_BINARIES := kernel-5.4 kernel-5.4-gz kernel-5.4-lz4
+
+# Some vendors still haven't cleaned up all device specific directories under
+# root!
 
 # TODO(b/111434759, b/111287060) SoC specific hacks
 BOARD_ROOT_EXTRA_SYMLINKS += /vendor/lib/dsp:/dsp
@@ -76,14 +79,3 @@
 # TODO(b/36764215): remove this setting when the generic system image
 # no longer has QCOM-specific directories under /.
 BOARD_SEPOLICY_DIRS += build/make/target/board/generic_arm64/sepolicy
-
-# 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/generic_arm64/device.mk b/target/board/generic_arm64/device.mk
index 4fcae46..3b7cd44 100644
--- a/target/board/generic_arm64/device.mk
+++ b/target/board/generic_arm64/device.mk
@@ -14,15 +14,10 @@
 # limitations under the License.
 #
 
-# Cuttlefish has GKI kernel prebuilts, so use those for the GKI boot.img.
-ifeq ($(TARGET_PREBUILT_KERNEL),)
-    LOCAL_KERNEL := device/google/cuttlefish_kernel/5.4-arm64/kernel
-else
-    LOCAL_KERNEL := $(TARGET_PREBUILT_KERNEL)
-endif
-
 PRODUCT_COPY_FILES += \
-    $(LOCAL_KERNEL):kernel
+    device/google/cuttlefish_kernel/5.4-arm64/kernel-5.4:kernel-5.4 \
+    device/google/cuttlefish_kernel/5.4-arm64/kernel-5.4-gz:kernel-5.4-gz \
+    device/google/cuttlefish_kernel/5.4-arm64/kernel-5.4-lz4:kernel-5.4-lz4
 
 # Adjust the Dalvik heap to be appropriate for a tablet.
 $(call inherit-product-if-exists, frameworks/base/build/tablet-dalvik-heap.mk)
diff --git a/target/product/aosp_arm64.mk b/target/product/aosp_arm64.mk
index 491397f..e88a366 100644
--- a/target/product/aosp_arm64.mk
+++ b/target/product/aosp_arm64.mk
@@ -14,8 +14,6 @@
 # limitations under the License.
 #
 
-PRODUCT_USE_DYNAMIC_PARTITIONS := true
-
 # The system image of aosp_arm64-userdebug is a GSI for the devices with:
 # - ARM 64 bits user space
 # - 64 bits binder interface
diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index a01133b..4f1c185 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -86,6 +86,7 @@
     framework-res \
     framework-sysconfig.xml \
     fsck_msdos \
+    fsverity-release-cert-der \
     fs_config_files_system \
     fs_config_dirs_system \
     group_system \
@@ -111,7 +112,6 @@
     installd \
     iorapd \
     ip \
-    ip6tables \
     iptables \
     ip-up-vpn \
     javax.obex \
diff --git a/target/product/emulated_storage.mk b/target/product/emulated_storage.mk
index 89de192..d7cc9ce 100644
--- a/target/product/emulated_storage.mk
+++ b/target/product/emulated_storage.mk
@@ -15,7 +15,7 @@
 #
 
 PRODUCT_QUOTA_PROJID := 1
-PRODUCT_PRODUCT_PROPERTIES += ro.emulated_storage.projid=1
+PRODUCT_PROPERTY_OVERRIDES += external_storage.projid.enabled=1
 
 PRODUCT_FS_CASEFOLD := 1
-PRODUCT_PRODUCT_PROPERTIES += ro.emulated_storage.casefold=1
+PRODUCT_PROPERTY_OVERRIDES += external_storage.casefold.enabled=1
diff --git a/target/product/mainline_system.mk b/target/product/mainline_system.mk
index f8d85bf..814cb64 100644
--- a/target/product/mainline_system.mk
+++ b/target/product/mainline_system.mk
@@ -120,6 +120,9 @@
 
 PRODUCT_ENFORCE_RRO_TARGETS := *
 
+# TODO(b/150820813) Settings depends on static overlay, remove this after eliminating the dependency.
+PRODUCT_ENFORCE_RRO_EXEMPTED_TARGETS := Settings
+
 PRODUCT_NAME := mainline_system
 PRODUCT_BRAND := generic
 
diff --git a/target/product/sdk_phone_arm64.mk b/target/product/sdk_phone_arm64.mk
index 9024890..3ab0c57 100644
--- a/target/product/sdk_phone_arm64.mk
+++ b/target/product/sdk_phone_arm64.mk
@@ -15,8 +15,36 @@
 #
 QEMU_USE_SYSTEM_EXT_PARTITIONS := true
 
-$(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_arm64.mk)
+PRODUCT_USE_DYNAMIC_PARTITIONS := true
+
+# This is a build configuration for a full-featured build of the
+# Open-Source part of the tree. It's geared toward a US-centric
+# build quite specifically for the emulator, and might not be
+# entirely appropriate to inherit from for on-device configurations.
+
+#
+# All components inherited here go to system image
+#
+$(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/mainline_system.mk)
+
+#
+# All components inherited here go to system_ext image
+#
+$(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 or vendor_boot image
+#
 $(call inherit-product-if-exists, device/generic/goldfish/arm64-vendor.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/product/emulator_vendor.mk)
+$(call inherit-product, $(SRC_TARGET_DIR)/board/emulator_arm64/device.mk)
 
 # Define the host tools and libs that are parts of the SDK.
 $(call inherit-product, sdk/build/product_sdk.mk)
@@ -29,7 +57,7 @@
 # Overrides
 PRODUCT_BRAND := Android
 PRODUCT_NAME := sdk_phone_arm64
-PRODUCT_DEVICE := generic_arm64
+PRODUCT_DEVICE := emulator_arm64
 PRODUCT_MODEL := Android SDK built for arm64
 
 
diff --git a/target/product/security/Android.bp b/target/product/security/Android.bp
index 080706b..5f4f82b 100644
--- a/target/product/security/Android.bp
+++ b/target/product/security/Android.bp
@@ -3,3 +3,11 @@
     name: "aosp-testkey",
     certificate: "testkey",
 }
+
+// Google-owned certificate for CTS testing, since we can't trust arbitrary keys on release devices.
+prebuilt_etc {
+    name: "fsverity-release-cert-der",
+    src: "fsverity-release.x509.der",
+    sub_dir: "security/fsverity",
+    filename_from_src: true,
+}
diff --git a/target/product/security/fsverity-release.x509.der b/target/product/security/fsverity-release.x509.der
new file mode 100644
index 0000000..cd8cd79
--- /dev/null
+++ b/target/product/security/fsverity-release.x509.der
Binary files differ
diff --git a/tools/releasetools/add_img_to_target_files.py b/tools/releasetools/add_img_to_target_files.py
index cc05c64..7db506c 100755
--- a/tools/releasetools/add_img_to_target_files.py
+++ b/tools/releasetools/add_img_to_target_files.py
@@ -731,16 +731,24 @@
   boot_image = None
   if has_boot:
     banner("boot")
-    # common.GetBootableImage() returns the image directly if present.
-    boot_image = common.GetBootableImage(
-        "IMAGES/boot.img", "boot.img", OPTIONS.input_tmp, "BOOT")
-    # boot.img may be unavailable in some targets (e.g. aosp_arm64).
-    if boot_image:
-      partitions['boot'] = os.path.join(OPTIONS.input_tmp, "IMAGES", "boot.img")
-      if not os.path.exists(partitions['boot']):
-        boot_image.WriteToDir(OPTIONS.input_tmp)
-        if output_zip:
-          boot_image.AddToZip(output_zip)
+    boot_images = OPTIONS.info_dict.get("boot_images")
+    if boot_images is None:
+      boot_images = "boot.img"
+    for b in boot_images.split():
+      # common.GetBootableImage() returns the image directly if present.
+      boot_image = common.GetBootableImage(
+          "IMAGES/" + b, b, OPTIONS.input_tmp, "BOOT")
+      # boot.img may be unavailable in some targets (e.g. aosp_arm64).
+      if boot_image:
+        boot_image_path = os.path.join(OPTIONS.input_tmp, "IMAGES", b)
+        # vbmeta does not need to include boot.img with multiple boot.img files,
+        # which is only used for aosp_arm64 for GKI
+        if len(boot_images.split()) == 1:
+          partitions['boot'] = boot_image_path
+        if not os.path.exists(boot_image_path):
+          boot_image.WriteToDir(OPTIONS.input_tmp)
+          if output_zip:
+            boot_image.AddToZip(output_zip)
 
   if has_vendor_boot:
     banner("vendor_boot")
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index ffcd38b..536d47f 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -1015,7 +1015,7 @@
   return ramdisk_img
 
 
-def _BuildBootableImage(sourcedir, fs_config_file, info_dict=None,
+def _BuildBootableImage(image_name, sourcedir, fs_config_file, info_dict=None,
                         has_ramdisk=False, two_step_image=False):
   """Build a bootable image from the specified sourcedir.
 
@@ -1028,7 +1028,15 @@
   for building the requested image.
   """
 
-  if not os.access(os.path.join(sourcedir, "kernel"), os.F_OK):
+  # "boot" or "recovery", without extension.
+  partition_name = os.path.basename(sourcedir).lower()
+
+  if partition_name == "recovery":
+    kernel = "kernel"
+  else:
+    kernel = image_name.replace("boot", "kernel")
+    kernel = kernel.replace(".img","")
+  if not os.access(os.path.join(sourcedir, kernel), os.F_OK):
     return None
 
   if has_ramdisk and not os.access(os.path.join(sourcedir, "RAMDISK"), os.F_OK):
@@ -1045,7 +1053,7 @@
   # use MKBOOTIMG from environ, or "mkbootimg" if empty or not set
   mkbootimg = os.getenv('MKBOOTIMG') or "mkbootimg"
 
-  cmd = [mkbootimg, "--kernel", os.path.join(sourcedir, "kernel")]
+  cmd = [mkbootimg, "--kernel", os.path.join(sourcedir, kernel)]
 
   fn = os.path.join(sourcedir, "second")
   if os.access(fn, os.F_OK):
@@ -1072,9 +1080,6 @@
     cmd.append("--pagesize")
     cmd.append(open(fn).read().rstrip("\n"))
 
-  # "boot" or "recovery", without extension.
-  partition_name = os.path.basename(sourcedir).lower()
-
   if partition_name == "recovery":
     args = info_dict.get("recovery_mkbootimg_args")
   else:
@@ -1197,7 +1202,7 @@
                  info_dict.get("recovery_as_boot") == "true")
 
   fs_config = "META/" + tree_subdir.lower() + "_filesystem_config.txt"
-  data = _BuildBootableImage(os.path.join(unpack_dir, tree_subdir),
+  data = _BuildBootableImage(prebuilt_name, os.path.join(unpack_dir, tree_subdir),
                              os.path.join(unpack_dir, fs_config),
                              info_dict, has_ramdisk, two_step_image)
   if data:
diff --git a/tools/releasetools/sign_apex.py b/tools/releasetools/sign_apex.py
index b0128dc..fb947f4 100755
--- a/tools/releasetools/sign_apex.py
+++ b/tools/releasetools/sign_apex.py
@@ -35,6 +35,10 @@
   -e  (--extra_apks)  <name,name,...=key>
       Add extra APK name/key pairs. This is useful to sign the apk files in the
       apex payload image.
+
+  --codename_to_api_level_map Q:29,R:30,...
+      A Mapping of codename to api level.  This is useful to provide sdk targeting
+      information to APK Signer.
 """
 
 import logging
@@ -48,7 +52,7 @@
 
 
 def SignApexFile(avbtool, apex_file, payload_key, container_key, no_hashtree,
-                 apk_keys=None, signing_args=None):
+                 apk_keys=None, signing_args=None, codename_to_api_level_map=None):
   """Signs the given apex file."""
   with open(apex_file, 'rb') as input_fp:
     apex_data = input_fp.read()
@@ -59,7 +63,7 @@
       payload_key=payload_key,
       container_key=container_key,
       container_pw=None,
-      codename_to_api_level_map=None,
+      codename_to_api_level_map=codename_to_api_level_map,
       no_hashtree=no_hashtree,
       apk_keys=apk_keys,
       signing_args=signing_args)
@@ -82,6 +86,13 @@
       options['payload_key'] = a
     elif o == '--payload_extra_args':
       options['payload_extra_args'] = a
+    elif o == '--codename_to_api_level_map':
+      versions = a.split(",")
+      for v in versions:
+        key, value = v.split(":")
+        if 'codename_to_api_level_map' not in options:
+          options['codename_to_api_level_map'] = {}
+        options['codename_to_api_level_map'].update({key: value})
     elif o in ("-e", "--extra_apks"):
       names, key = a.split("=")
       names = names.split(",")
@@ -98,6 +109,7 @@
       extra_opts='e:',
       extra_long_opts=[
           'avbtool=',
+          'codename_to_api_level_map=',
           'container_key=',
           'payload_extra_args=',
           'payload_key=',
@@ -119,7 +131,9 @@
       options['container_key'],
       no_hashtree=False,
       apk_keys=options.get('extra_apks', {}),
-      signing_args=options.get('payload_extra_args'))
+      signing_args=options.get('payload_extra_args'),
+      codename_to_api_level_map=options.get(
+          'codename_to_api_level_map', {}))
   shutil.copyfile(signed_apex, args[1])
   logger.info("done.")