diff --git a/Changes.md b/Changes.md
index e356109..35b8944 100644
--- a/Changes.md
+++ b/Changes.md
@@ -1,5 +1,15 @@
 # Build System Changes for Android.mk Writers
 
+## `*.c.arm` / `*.cpp.arm` deprecation  {#file_arm}
+
+In Android.mk files, you used to be able to change LOCAL_ARM_MODE for each
+source file by appending `.arm` to the end of the filename in
+`LOCAL_SRC_FILES`.
+
+Soong does not support this uncommonly used behavior, instead expecting those
+files to be split out into a separate static library that chooses `arm` over
+`thumb` for the entire library. This must now also be done in Android.mk files.
+
 ## Windows cross-compiles no longer supported in Android.mk
 
 Modules that build for Windows (our only `HOST_CROSS` OS currently) must now be
diff --git a/CleanSpec.mk b/CleanSpec.mk
index f95f0a7..21034ad 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -599,6 +599,10 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/dex_bootjars)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/dex_bootjars_input)
 
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib*/libnpt.so)
+
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/lib*)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/Makefile b/core/Makefile
index 8cf038d..8a73f4e 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -181,10 +181,24 @@
 FINAL_VENDOR_DEFAULT_PROPERTIES += \
     $(call collapse-pairs, $(PRODUCT_DEFAULT_PROPERTY_OVERRIDES))
 
+# Add cpu properties for bionic and ART.
 FINAL_VENDOR_DEFAULT_PROPERTIES += ro.bionic.arch=$(TARGET_ARCH)
-FINAL_VENDOR_DEFAULT_PROPERTIES += ro.bionic.cpu_variant=$(TARGET_CPU_VARIANT)
+FINAL_VENDOR_DEFAULT_PROPERTIES += ro.bionic.cpu_variant=$(TARGET_CPU_VARIANT_RUNTIME)
 FINAL_VENDOR_DEFAULT_PROPERTIES += ro.bionic.2nd_arch=$(TARGET_2ND_ARCH)
-FINAL_VENDOR_DEFAULT_PROPERTIES += ro.bionic.2nd_cpu_variant=$(TARGET_2ND_CPU_VARIANT)
+FINAL_VENDOR_DEFAULT_PROPERTIES += ro.bionic.2nd_cpu_variant=$(TARGET_2ND_CPU_VARIANT_RUNTIME)
+
+FINAL_VENDOR_DEFAULT_PROPERTIES += persist.sys.dalvik.vm.lib.2=libart.so
+FINAL_VENDOR_DEFAULT_PROPERTIES += dalvik.vm.isa.$(TARGET_ARCH).variant=$(DEX2OAT_TARGET_CPU_VARIANT_RUNTIME)
+ifneq ($(DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES),)
+  FINAL_VENDOR_DEFAULT_PROPERTIES += dalvik.vm.isa.$(TARGET_ARCH).features=$(DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES)
+endif
+
+ifdef TARGET_2ND_ARCH
+  FINAL_VENDOR_DEFAULT_PROPERTIES += dalvik.vm.isa.$(TARGET_2ND_ARCH).variant=$($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_CPU_VARIANT_RUNTIME)
+  ifneq ($($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES),)
+    FINAL_VENDOR_DEFAULT_PROPERTIES += dalvik.vm.isa.$(TARGET_2ND_ARCH).features=$($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES)
+  endif
+endif
 
 # Although these variables are prefixed with TARGET_RECOVERY_, they are also needed under charger
 # mode (via libminui).
@@ -690,8 +704,10 @@
 
 ifneq (,$(TARGET_BUILD_APPS))
   $(call dist-for-goals, apps_only, $(APKCERTS_FILE):apkcerts.txt)
+  $(call dist-for-goals, apps_only, $(SOONG_APEX_KEYS_FILE):apexkeys.txt)
 endif
 
+
 # -----------------------------------------------------------------
 # build system stats
 BUILD_SYSTEM_STATS := $(PRODUCT_OUT)/build_system_stats.txt
@@ -914,7 +930,7 @@
 endif
 endif
 
-INTERNAL_KERNEL_CMDLINE := $(strip $(BOARD_KERNEL_CMDLINE) buildvariant=$(TARGET_BUILD_VARIANT) $(VERITY_KEYID))
+INTERNAL_KERNEL_CMDLINE := $(strip $(INTERNAL_KERNEL_CMDLINE) buildvariant=$(TARGET_BUILD_VARIANT) $(VERITY_KEYID))
 ifdef INTERNAL_KERNEL_CMDLINE
 INTERNAL_BOOTIMAGE_ARGS += --cmdline "$(INTERNAL_KERNEL_CMDLINE)"
 endif
@@ -1005,7 +1021,6 @@
 endif
 $(eval $(call copy-one-file,$(BOARD_PREBUILT_BOOTIMAGE),$(INSTALLED_BOOTIMAGE_TARGET)))
 else # BOARD_PREBUILT_BOOTIMAGE not defined
-INTERNAL_KERNEL_CMDLINE := $(strip $(BOARD_KERNEL_CMDLINE))
 INSTALLED_BOOTIMAGE_TARGET :=
 endif # BOARD_PREBUILT_BOOTIMAGE
 endif # TARGET_NO_KERNEL
@@ -2173,6 +2188,19 @@
 $(INSTALLED_SYSTEMIMAGE_TARGET): $(BUILT_SYSTEMIMAGE) $(RECOVERY_FROM_BOOT_PATCH)
 	@echo "Install system fs image: $@"
 	$(copy-file-to-target)
+ifdef RECOVERY_FROM_BOOT_PATCH
+ifeq ($(PRODUCT_USE_DYNAMIC_PARTITION_SIZE),true)
+ifeq ($(BOARD_SYSTEMIMAGE_PARTITION_SIZE),)
+	# system image size is dynamic, hence system_size in generated_system_image_info.txt does not
+	# have room for recovery from boot patch. Increase system_size so that check-all-partition-sizes
+	# accounts for the size of the patch.
+	sed -i'.bak' -e 's/^system_size=.*$$/system_size='"$$(( \
+	      $(call read-image-prop-dictionary,$(systemimage_intermediates)/generated_system_image_info.txt,system_size) + \
+	      $$($(call get-file-size,$(RECOVERY_FROM_BOOT_PATCH))) ))"'/' \
+	    $(systemimage_intermediates)/generated_system_image_info.txt
+endif
+endif
+endif
 	$(hide) $(call assert-max-image-size,$@ $(RECOVERY_FROM_BOOT_PATCH),\
 	    $(call read-image-prop-dictionary,\
 	        $(systemimage_intermediates)/generated_system_image_info.txt,system_size))
@@ -3413,6 +3441,8 @@
   $(HOST_OUT_EXECUTABLES)/lib/shflags/shflags \
   $(HOST_OUT_EXECUTABLES)/delta_generator \
   $(HOST_OUT_EXECUTABLES)/care_map_generator \
+  $(HOST_OUT_EXECUTABLES)/fc_sort \
+  $(HOST_OUT_EXECUTABLES)/sefcontext_compile \
   $(LPMAKE) \
   $(AVBTOOL) \
   $(BLK_ALLOC_TO_BASE_FS) \
@@ -3648,6 +3678,7 @@
 	    $(LPMAKE) \
 	    $(SELINUX_FC) \
 	    $(APKCERTS_FILE) \
+	    $(SOONG_APEX_KEYS_FILE) \
 	    $(SOONG_ZIP) \
 	    $(HOST_OUT_EXECUTABLES)/fs_config \
 	    $(HOST_OUT_EXECUTABLES)/imgdiff \
@@ -3781,6 +3812,7 @@
 	@# build them.
 	$(hide) mkdir -p $(zip_root)/META
 	$(hide) cp $(APKCERTS_FILE) $(zip_root)/META/apkcerts.txt
+	$(hide) cp $(SOONG_APEX_KEYS_FILE) $(zip_root)/META/apexkeys.txt
 ifneq ($(tool_extension),)
 	$(hide) cp $(PRIVATE_TOOL_EXTENSION) $(zip_root)/META/
 endif
@@ -4063,6 +4095,8 @@
 
 INTERNAL_OTA_PACKAGE_TARGET := $(PRODUCT_OUT)/$(name).zip
 
+INTERNAL_OTA_METADATA := $(PRODUCT_OUT)/ota_metadata
+
 $(INTERNAL_OTA_PACKAGE_TARGET): KEY_CERT_PAIR := $(DEFAULT_KEY_CERT_PAIR)
 
 ifeq ($(AB_OTA_UPDATER),true)
@@ -4071,10 +4105,12 @@
 $(INTERNAL_OTA_PACKAGE_TARGET): $(BROTLI)
 endif
 
+$(INTERNAL_OTA_PACKAGE_TARGET): .KATI_IMPLICIT_OUTPUTS := $(INTERNAL_OTA_METADATA)
+
 $(INTERNAL_OTA_PACKAGE_TARGET): $(BUILT_TARGET_FILES_PACKAGE) \
 	    build/make/tools/releasetools/ota_from_target_files
 	@echo "Package OTA: $@"
-	$(call build-ota-package-target,$@,-k $(KEY_CERT_PAIR))
+	$(call build-ota-package-target,$@,-k $(KEY_CERT_PAIR) --output_metadata_path $(INTERNAL_OTA_METADATA))
 
 .PHONY: otapackage
 otapackage: $(INTERNAL_OTA_PACKAGE_TARGET)
@@ -4585,9 +4621,3 @@
 ifneq ($(sdk_repo_goal),)
 include $(TOPDIR)development/build/tools/sdk_repo.mk
 endif
-
-#------------------------------------------------------------------
-# Find lsdump paths
-FIND_LSDUMPS_FILE := $(PRODUCT_OUT)/lsdump_paths.txt
-$(FIND_LSDUMPS_FILE) : $(LSDUMP_PATHS)
-	$(hide) rm -rf $@ && echo "$^" | sed -e 's/ /\n/g' > $@
diff --git a/core/android_manifest.mk b/core/android_manifest.mk
index efa6ae6..931b1b1 100644
--- a/core/android_manifest.mk
+++ b/core/android_manifest.mk
@@ -36,7 +36,7 @@
   fixed_android_manifest := $(intermediates.COMMON)/manifest/AndroidManifest.xml.fixed
 
   $(full_android_manifest): PRIVATE_LIBS_MANIFESTS := $(my_full_libs_manifest_files)
-  $(full_android_manifest): $(ANDROID_MANIFEST_MERGER_DEPS)
+  $(full_android_manifest): $(ANDROID_MANIFEST_MERGER)
   $(full_android_manifest) : $(fixed_android_manifest) $(my_full_libs_manifest_files)
 	@echo "Merge android manifest files: $@ <-- $< $(PRIVATE_LIBS_MANIFESTS)"
 	@mkdir -p $(dir $@)
diff --git a/core/android_vts_host_config.mk b/core/android_vts_host_config.mk
new file mode 100644
index 0000000..38ba19d
--- /dev/null
+++ b/core/android_vts_host_config.mk
@@ -0,0 +1,26 @@
+#
+# Copyright (C) 2016 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.
+#
+
+LOCAL_MODULE_CLASS := FAKE
+LOCAL_IS_HOST_MODULE := true
+LOCAL_COMPATIBILITY_SUITE := vts
+
+include $(BUILD_SYSTEM)/base_rules.mk
+
+$(LOCAL_BUILT_MODULE):
+	@echo "VTS host-driven test target: $(PRIVATE_MODULE)"
+	$(hide) touch $@
+
diff --git a/core/autogen_test_config.mk b/core/autogen_test_config.mk
index a01d80f..6d75132 100644
--- a/core/autogen_test_config.mk
+++ b/core/autogen_test_config.mk
@@ -36,7 +36,7 @@
 $(autogen_test_config_file): PRIVATE_MODULE_NAME := $(LOCAL_MODULE)
 $(autogen_test_config_file) : $(autogen_test_config_template)
 	@echo "Auto generating test config $(notdir $@)"
-	$(hide) sed 's&{MODULE}&$(PRIVATE_MODULE_NAME)&g' $< > $@
+	$(hide) sed 's&{MODULE}&$(PRIVATE_MODULE_NAME)&g;s&{EXTRA_OPTIONS}&&g' $< > $@
 my_auto_generate_config := true
 else
 # Auto generating test config file for instrumentation test
diff --git a/core/binary.mk b/core/binary.mk
index ccf5580..ad3d76b 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -440,9 +440,6 @@
 ifneq ($(foreach i,$(my_c_includes),$(filter %/..,$(i))$(findstring /../,$(i))),)
 my_soong_problems += dotdot_incs
 endif
-ifneq ($(filter %.arm,$(my_src_files)),)
-my_soong_problems += srcs_dotarm
-endif
 
 ####################################################
 ## Add FDO flags if FDO is turned on and supported
@@ -506,19 +503,15 @@
 ###########################################################
 LOCAL_ARM_MODE := $(strip $(LOCAL_ARM_MODE))
 ifeq ($($(my_prefix)$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH),arm)
-arm_objects_mode := $(if $(LOCAL_ARM_MODE),$(LOCAL_ARM_MODE),arm)
 normal_objects_mode := $(if $(LOCAL_ARM_MODE),$(LOCAL_ARM_MODE),thumb)
 
 # Read the values from something like TARGET_arm_CFLAGS or
 # TARGET_thumb_CFLAGS.  HOST_(arm|thumb)_CFLAGS values aren't
 # actually used (although they are usually empty).
-arm_objects_cflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)$(arm_objects_mode)_CFLAGS)
 normal_objects_cflags := $($(LOCAL_2ND_ARCH_VAR_PREFIX)$(my_prefix)$(normal_objects_mode)_CFLAGS)
 
 else
-arm_objects_mode :=
 normal_objects_mode :=
-arm_objects_cflags :=
 normal_objects_cflags :=
 endif
 
@@ -657,7 +650,7 @@
 proto_sources_fullpath := $(addprefix $(LOCAL_PATH)/, $(proto_sources))
 
 my_rename_cpp_ext :=
-ifneq (,$(filter nanopb-c nanopb-c-enable_malloc, $(LOCAL_PROTOC_OPTIMIZE_TYPE)))
+ifneq (,$(filter nanopb-c nanopb-c-enable_malloc nanopb-c-16bit nanopb-c-enable_malloc-16bit nanopb-c-32bit nanopb-c-enable_malloc-32bit, $(LOCAL_PROTOC_OPTIMIZE_TYPE)))
 my_proto_source_suffix := .c
 my_proto_c_includes := external/nanopb-c
 my_protoc_flags := --nanopb_out=$(proto_gen_dir) \
@@ -712,6 +705,14 @@
     my_static_libraries += libprotobuf-c-nano-enable_malloc
 else ifeq ($(LOCAL_PROTOC_OPTIMIZE_TYPE),nanopb-c)
     my_static_libraries += libprotobuf-c-nano
+else ifeq ($(LOCAL_PROTOC_OPTIMIZE_TYPE),nanopb-c-enable_malloc-16bit)
+    my_static_libraries += libprotobuf-c-nano-enable_malloc-16bit
+else ifeq ($(LOCAL_PROTOC_OPTIMIZE_TYPE),nanopb-c-16bit)
+    my_static_libraries += libprotobuf-c-nano-16bit
+else ifeq ($(LOCAL_PROTOC_OPTIMIZE_TYPE),nanopb-c-enable_malloc-32bit)
+    my_static_libraries += libprotobuf-c-nano-enable_malloc-32bit
+else ifeq ($(LOCAL_PROTOC_OPTIMIZE_TYPE),nanopb-c-32bit)
+    my_static_libraries += libprotobuf-c-nano-32bit
 else ifeq ($(LOCAL_PROTOC_OPTIMIZE_TYPE),full)
     ifdef LOCAL_SDK_VERSION
         my_static_libraries += libprotobuf-cpp-full-ndk
@@ -853,22 +854,9 @@
 ## C++: Compile .cpp files to .o.
 ###########################################################
 
-# we also do this on host modules, even though
-# it's not really arm, because there are files that are shared.
-cpp_arm_sources := $(patsubst %$(LOCAL_CPP_EXTENSION).arm,%$(LOCAL_CPP_EXTENSION),$(filter %$(LOCAL_CPP_EXTENSION).arm,$(my_src_files)))
-dotdot_arm_sources := $(filter ../%,$(cpp_arm_sources))
-cpp_arm_sources := $(filter-out ../%,$(cpp_arm_sources))
-cpp_arm_objects := $(addprefix $(intermediates)/,$(cpp_arm_sources:$(LOCAL_CPP_EXTENSION)=.o))
-$(call track-src-file-obj,$(patsubst %,%.arm,$(cpp_arm_sources)),$(cpp_arm_objects))
-
-# For source files starting with ../, we remove all the ../ in the object file path,
-# to avoid object file escaping the intermediate directory.
-dotdot_arm_objects :=
-$(foreach s,$(dotdot_arm_sources),\
-  $(eval $(call compile-dotdot-cpp-file,$(s),\
-  $(my_additional_dependencies),\
-  dotdot_arm_objects)))
-$(call track-src-file-obj,$(patsubst %,%.arm,$(dotdot_arm_sources)),$(dotdot_arm_objects))
+ifneq ($(filter %$(LOCAL_CPP_EXTENSION).arm,$(my_src_files)),)
+$(call pretty-error,Files ending in $(LOCAL_CPP_EXTENSION).arm are deprecated. See $(CHANGES_URL)#file_arm)
+endif
 
 dotdot_sources := $(filter ../%$(LOCAL_CPP_EXTENSION),$(my_src_files))
 dotdot_objects :=
@@ -879,15 +867,11 @@
 $(call track-src-file-obj,$(dotdot_sources),$(dotdot_objects))
 
 cpp_normal_sources := $(filter-out ../%,$(filter %$(LOCAL_CPP_EXTENSION),$(my_src_files)))
-cpp_normal_objects := $(addprefix $(intermediates)/,$(cpp_normal_sources:$(LOCAL_CPP_EXTENSION)=.o))
-$(call track-src-file-obj,$(cpp_normal_sources),$(cpp_normal_objects))
+cpp_objects := $(addprefix $(intermediates)/,$(cpp_normal_sources:$(LOCAL_CPP_EXTENSION)=.o))
+$(call track-src-file-obj,$(cpp_normal_sources),$(cpp_objects))
 
-$(dotdot_arm_objects) $(cpp_arm_objects): PRIVATE_ARM_MODE := $(arm_objects_mode)
-$(dotdot_arm_objects) $(cpp_arm_objects): PRIVATE_ARM_CFLAGS := $(arm_objects_cflags)
-$(dotdot_objects) $(cpp_normal_objects): PRIVATE_ARM_MODE := $(normal_objects_mode)
-$(dotdot_objects) $(cpp_normal_objects): PRIVATE_ARM_CFLAGS := $(normal_objects_cflags)
-
-cpp_objects        := $(cpp_arm_objects) $(cpp_normal_objects)
+$(dotdot_objects) $(cpp_objects): PRIVATE_ARM_MODE := $(normal_objects_mode)
+$(dotdot_objects) $(cpp_objects): PRIVATE_ARM_CFLAGS := $(normal_objects_cflags)
 
 ifneq ($(strip $(cpp_objects)),)
 $(cpp_objects): $(intermediates)/%.o: \
@@ -897,7 +881,7 @@
 $(call include-depfiles-for-objs, $(cpp_objects))
 endif
 
-cpp_objects += $(dotdot_arm_objects) $(dotdot_objects)
+cpp_objects += $(dotdot_objects)
 
 ###########################################################
 ## C++: Compile generated .cpp files to .o.
@@ -909,7 +893,6 @@
 
 ifneq ($(strip $(gen_cpp_objects)),)
 # Compile all generated files as thumb.
-# TODO: support compiling certain generated files as arm.
 $(gen_cpp_objects): PRIVATE_ARM_MODE := $(normal_objects_mode)
 $(gen_cpp_objects): PRIVATE_ARM_CFLAGS := $(normal_objects_cflags)
 $(gen_cpp_objects): $(intermediates)/%.o: \
@@ -957,20 +940,9 @@
 ## C: Compile .c files to .o.
 ###########################################################
 
-c_arm_sources := $(patsubst %.c.arm,%.c,$(filter %.c.arm,$(my_src_files)))
-dotdot_arm_sources := $(filter ../%,$(c_arm_sources))
-c_arm_sources := $(filter-out ../%,$(c_arm_sources))
-c_arm_objects := $(addprefix $(intermediates)/,$(c_arm_sources:.c=.o))
-$(call track-src-file-obj,$(patsubst %,%.arm,$(c_arm_sources)),$(c_arm_objects))
-
-# For source files starting with ../, we remove all the ../ in the object file path,
-# to avoid object file escaping the intermediate directory.
-dotdot_arm_objects :=
-$(foreach s,$(dotdot_arm_sources),\
-  $(eval $(call compile-dotdot-c-file,$(s),\
-    $(my_additional_dependencies),\
-    dotdot_arm_objects)))
-$(call track-src-file-obj,$(patsubst %,%.arm,$(dotdot_arm_sources)),$(dotdot_arm_objects))
+ifneq ($(filter %.c.arm,$(my_src_files)),)
+$(call pretty-error,Files ending in .c.arm are deprecated. See $(CHANGES_URL)#file_arm)
+endif
 
 dotdot_sources := $(filter ../%.c, $(my_src_files))
 dotdot_objects :=
@@ -981,15 +953,11 @@
 $(call track-src-file-obj,$(dotdot_sources),$(dotdot_objects))
 
 c_normal_sources := $(filter-out ../%,$(filter %.c,$(my_src_files)))
-c_normal_objects := $(addprefix $(intermediates)/,$(c_normal_sources:.c=.o))
-$(call track-src-file-obj,$(c_normal_sources),$(c_normal_objects))
+c_objects := $(addprefix $(intermediates)/,$(c_normal_sources:.c=.o))
+$(call track-src-file-obj,$(c_normal_sources),$(c_objects))
 
-$(dotdot_arm_objects) $(c_arm_objects): PRIVATE_ARM_MODE := $(arm_objects_mode)
-$(dotdot_arm_objects) $(c_arm_objects): PRIVATE_ARM_CFLAGS := $(arm_objects_cflags)
-$(dotdot_objects) $(c_normal_objects): PRIVATE_ARM_MODE := $(normal_objects_mode)
-$(dotdot_objects) $(c_normal_objects): PRIVATE_ARM_CFLAGS := $(normal_objects_cflags)
-
-c_objects        := $(c_arm_objects) $(c_normal_objects)
+$(dotdot_objects) $(c_objects): PRIVATE_ARM_MODE := $(normal_objects_mode)
+$(dotdot_objects) $(c_objects): PRIVATE_ARM_CFLAGS := $(normal_objects_cflags)
 
 ifneq ($(strip $(c_objects)),)
 $(c_objects): $(intermediates)/%.o: $(TOPDIR)$(LOCAL_PATH)/%.c \
@@ -998,7 +966,7 @@
 $(call include-depfiles-for-objs, $(c_objects))
 endif
 
-c_objects += $(dotdot_arm_objects) $(dotdot_objects)
+c_objects += $(dotdot_objects)
 
 ###########################################################
 ## C: Compile generated .c files to .o.
@@ -1010,7 +978,6 @@
 
 ifneq ($(strip $(gen_c_objects)),)
 # Compile all generated files as thumb.
-# TODO: support compiling certain generated files as arm.
 $(gen_c_objects): PRIVATE_ARM_MODE := $(normal_objects_mode)
 $(gen_c_objects): PRIVATE_ARM_CFLAGS := $(normal_objects_cflags)
 $(gen_c_objects): $(intermediates)/%.o: $(intermediates)/%.c \
diff --git a/core/board_config.mk b/core/board_config.mk
new file mode 100644
index 0000000..ed741c3
--- /dev/null
+++ b/core/board_config.mk
@@ -0,0 +1,508 @@
+#
+# Copyright (C) 2019 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.
+#
+
+# ###############################################################
+# This file includes BoardConfig.mk for the device being built,
+# and sanity-checks the variable defined therein.
+# ###############################################################
+
+_board_strip_readonly_list := \
+  BOARD_EGL_CFG \
+  BOARD_HAVE_BLUETOOTH \
+  BOARD_INSTALLER_CMDLINE \
+  BOARD_KERNEL_CMDLINE \
+  BOARD_KERNEL_BASE \
+  BOARD_USES_GENERIC_AUDIO \
+  BOARD_VENDOR_USE_AKMD \
+  BOARD_WPA_SUPPLICANT_DRIVER \
+  BOARD_WLAN_DEVICE \
+  TARGET_ARCH \
+  TARGET_ARCH_VARIANT \
+  TARGET_CPU_ABI \
+  TARGET_CPU_ABI2 \
+  TARGET_CPU_VARIANT \
+  TARGET_CPU_VARIANT_RUNTIME \
+  TARGET_2ND_ARCH \
+  TARGET_2ND_ARCH_VARIANT \
+  TARGET_2ND_CPU_ABI \
+  TARGET_2ND_CPU_ABI2 \
+  TARGET_2ND_CPU_VARIANT \
+  TARGET_2ND_CPU_VARIANT_RUNTIME \
+  TARGET_BOARD_PLATFORM \
+  TARGET_BOARD_PLATFORM_GPU \
+  TARGET_BOOTLOADER_BOARD_NAME \
+  TARGET_NO_BOOTLOADER \
+  TARGET_NO_KERNEL \
+  TARGET_NO_RECOVERY \
+  TARGET_NO_RADIOIMAGE \
+  TARGET_HARDWARE_3D \
+  WITH_DEXPREOPT \
+
+# File system variables
+_board_strip_readonly_list += \
+  BOARD_FLASH_BLOCK_SIZE \
+  BOARD_BOOTIMAGE_PARTITION_SIZE \
+  BOARD_RECOVERYIMAGE_PARTITION_SIZE \
+  BOARD_SYSTEMIMAGE_PARTITION_SIZE \
+  BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE \
+  BOARD_USERDATAIMAGE_FILE_SYSTEM_TYPE \
+  BOARD_USERDATAIMAGE_PARTITION_SIZE \
+  BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE \
+  BOARD_CACHEIMAGE_PARTITION_SIZE \
+  BOARD_VENDORIMAGE_PARTITION_SIZE \
+  BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE \
+  BOARD_PRODUCTIMAGE_PARTITION_SIZE \
+  BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE \
+  BOARD_PRODUCT_SERVICESIMAGE_PARTITION_SIZE \
+  BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE \
+  BOARD_ODMIMAGE_PARTITION_SIZE \
+  BOARD_ODMIMAGE_FILE_SYSTEM_TYPE \
+
+# Logical partitions related variables.
+_dynamic_partitions_var_list += \
+  BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE \
+  BOARD_VENDORIMAGE_PARTITION_RESERVED_SIZE \
+  BOARD_ODMIMAGE_PARTITION_RESERVED_SIZE \
+  BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE \
+  BOARD_PRODUCT_SERVICESIMAGE_PARTITION_RESERVED_SIZE \
+  BOARD_SUPER_PARTITION_SIZE \
+  BOARD_SUPER_PARTITION_GROUPS \
+
+_board_strip_readonly_list += $(_dynamic_partitions_var_list)
+
+_build_broken_var_list := \
+  BUILD_BROKEN_ANDROIDMK_EXPORTS \
+  BUILD_BROKEN_DUP_COPY_HEADERS \
+  BUILD_BROKEN_DUP_RULES \
+  BUILD_BROKEN_PHONY_TARGETS \
+  BUILD_BROKEN_ENG_DEBUG_TAGS \
+
+_board_true_false_vars := $(_build_broken_var_list)
+_board_strip_readonly_list += $(_build_broken_var_list)
+
+# Conditional to building on linux, as dex2oat currently does not work on darwin.
+ifeq ($(HOST_OS),linux)
+  WITH_DEXPREOPT := true
+endif
+
+# ###############################################################
+# Broken build defaults
+# ###############################################################
+BUILD_BROKEN_ANDROIDMK_EXPORTS :=
+BUILD_BROKEN_DUP_COPY_HEADERS :=
+BUILD_BROKEN_DUP_RULES :=
+BUILD_BROKEN_PHONY_TARGETS :=
+BUILD_BROKEN_ENG_DEBUG_TAGS :=
+
+# Boards may be defined under $(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)
+# or under vendor/*/$(TARGET_DEVICE).  Search in both places, but
+# make sure only one exists.
+# Real boards should always be associated with an OEM vendor.
+ifdef TARGET_DEVICE_DIR
+  ifneq ($(origin TARGET_DEVICE_DIR),command line)
+    $(error TARGET_DEVICE_DIR may not be set manually)
+  endif
+  board_config_mk := $(TARGET_DEVICE_DIR)/BoardConfig.mk
+else
+  board_config_mk := \
+    $(strip $(sort $(wildcard \
+      $(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)/BoardConfig.mk \
+      $(shell test -d device && find -L device -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
+      $(shell test -d vendor && find -L vendor -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
+    )))
+  ifeq ($(board_config_mk),)
+    $(error No config file found for TARGET_DEVICE $(TARGET_DEVICE))
+  endif
+  ifneq ($(words $(board_config_mk)),1)
+    $(error Multiple board config files for TARGET_DEVICE $(TARGET_DEVICE): $(board_config_mk))
+  endif
+  TARGET_DEVICE_DIR := $(patsubst %/,%,$(dir $(board_config_mk)))
+  .KATI_READONLY := TARGET_DEVICE_DIR
+endif
+include $(board_config_mk)
+ifeq ($(TARGET_ARCH),)
+  $(error TARGET_ARCH not defined by board config: $(board_config_mk))
+endif
+ifneq ($(MALLOC_IMPL),)
+  $(warning *** Unsupported option MALLOC_IMPL defined by board config: $(board_config_mk).)
+  $(error Use `MALLOC_SVELTE := true` to configure jemalloc for low-memory)
+endif
+board_config_mk :=
+
+# Clean up and verify BoardConfig variables
+$(foreach var,$(_board_strip_readonly_list),$(eval $(var) := $$(strip $$($(var)))))
+$(foreach var,$(_board_true_false_vars), \
+  $(if $(filter-out true false,$($(var))), \
+    $(error Valid values of $(var) are "true", "false", and "". Not "$($(var))")))
+
+# Default *_CPU_VARIANT_RUNTIME to CPU_VARIANT if unspecified.
+TARGET_CPU_VARIANT_RUNTIME := $(or $(TARGET_CPU_VARIANT_RUNTIME),$(TARGET_CPU_VARIANT))
+TARGET_2ND_CPU_VARIANT_RUNTIME := $(or $(TARGET_2ND_CPU_VARIANT_RUNTIME),$(TARGET_2ND_CPU_VARIANT))
+
+# The combo makefiles sanity-check and set defaults for various CPU configuration
+combo_target := TARGET_
+combo_2nd_arch_prefix :=
+include $(BUILD_SYSTEM)/combo/select.mk
+
+ifdef TARGET_2ND_ARCH
+  combo_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
+  include $(BUILD_SYSTEM)/combo/select.mk
+endif
+
+.KATI_READONLY := $(_board_strip_readonly_list)
+
+INTERNAL_KERNEL_CMDLINE := $(BOARD_KERNEL_CMDLINE)
+ifeq ($(TARGET_CPU_ABI),)
+  $(error No TARGET_CPU_ABI defined by board config: $(board_config_mk))
+endif
+ifneq ($(filter %64,$(TARGET_ARCH)),)
+  TARGET_IS_64_BIT := true
+endif
+
+ifeq (,$(filter true,$(TARGET_SUPPORTS_32_BIT_APPS) $(TARGET_SUPPORTS_64_BIT_APPS)))
+  TARGET_SUPPORTS_32_BIT_APPS := true
+endif
+
+# Sanity check to warn about likely cryptic errors later in the build.
+ifeq ($(TARGET_IS_64_BIT),true)
+  ifeq (,$(filter true false,$(TARGET_SUPPORTS_64_BIT_APPS)))
+    $(warning Building a 32-bit-app-only product on a 64-bit device. \
+      If this is intentional, set TARGET_SUPPORTS_64_BIT_APPS := false)
+  endif
+endif
+
+# "ro.product.cpu.abilist32" and "ro.product.cpu.abilist64" are
+# comma separated lists of the 32 and 64 bit ABIs (in order of
+# preference) that the target supports. If TARGET_CPU_ABI_LIST_{32,64}_BIT
+# are defined by the board config, we use them. Else, we construct
+# these lists based on whether TARGET_IS_64_BIT is set.
+#
+# Note that this assumes that the 2ND_CPU_ABI for a 64 bit target
+# is always 32 bits. If this isn't the case, these variables should
+# be overriden in the board configuration.
+ifeq (,$(TARGET_CPU_ABI_LIST_64_BIT))
+  ifeq (true|true,$(TARGET_IS_64_BIT)|$(TARGET_SUPPORTS_64_BIT_APPS))
+    TARGET_CPU_ABI_LIST_64_BIT := $(TARGET_CPU_ABI) $(TARGET_CPU_ABI2)
+  endif
+endif
+
+ifeq (,$(TARGET_CPU_ABI_LIST_32_BIT))
+  ifneq (true,$(TARGET_IS_64_BIT))
+    TARGET_CPU_ABI_LIST_32_BIT := $(TARGET_CPU_ABI) $(TARGET_CPU_ABI2)
+  else
+    ifeq (true,$(TARGET_SUPPORTS_32_BIT_APPS))
+      # For a 64 bit target, assume that the 2ND_CPU_ABI
+      # is a 32 bit ABI.
+      TARGET_CPU_ABI_LIST_32_BIT := $(TARGET_2ND_CPU_ABI) $(TARGET_2ND_CPU_ABI2)
+    endif
+  endif
+endif
+
+# "ro.product.cpu.abilist" is a comma separated list of ABIs (in order
+# of preference) that the target supports. If a TARGET_CPU_ABI_LIST
+# is specified by the board configuration, we use that. If not, we
+# build a list out of the TARGET_CPU_ABIs specified by the config.
+ifeq (,$(TARGET_CPU_ABI_LIST))
+  ifeq ($(TARGET_IS_64_BIT)|$(TARGET_PREFER_32_BIT_APPS),true|true)
+    TARGET_CPU_ABI_LIST := $(TARGET_CPU_ABI_LIST_32_BIT) $(TARGET_CPU_ABI_LIST_64_BIT)
+  else
+    TARGET_CPU_ABI_LIST := $(TARGET_CPU_ABI_LIST_64_BIT) $(TARGET_CPU_ABI_LIST_32_BIT)
+  endif
+endif
+
+# Strip whitespace from the ABI list string.
+TARGET_CPU_ABI_LIST := $(subst $(space),$(comma),$(strip $(TARGET_CPU_ABI_LIST)))
+TARGET_CPU_ABI_LIST_32_BIT := $(subst $(space),$(comma),$(strip $(TARGET_CPU_ABI_LIST_32_BIT)))
+TARGET_CPU_ABI_LIST_64_BIT := $(subst $(space),$(comma),$(strip $(TARGET_CPU_ABI_LIST_64_BIT)))
+
+ifneq ($(BUILD_BROKEN_ANDROIDMK_EXPORTS),true)
+$(KATI_obsolete_export It is a global setting. See $(CHANGES_URL)#export_keyword)
+endif
+
+###########################################
+# Now we can substitute with the real value of TARGET_COPY_OUT_RAMDISK
+ifeq ($(BOARD_BUILD_SYSTEM_ROOT_IMAGE),true)
+TARGET_COPY_OUT_RAMDISK := $(TARGET_COPY_OUT_ROOT)
+endif
+
+###########################################
+# Configure whether we're building the system image
+BUILDING_SYSTEM_IMAGE := true
+ifeq ($(PRODUCT_BUILD_SYSTEM_IMAGE),)
+  ifndef PRODUCT_USE_DYNAMIC_PARTITION_SIZE
+    ifndef BOARD_SYSTEMIMAGE_PARTITION_SIZE
+      BUILDING_SYSTEM_IMAGE :=
+    endif
+  endif
+else ifeq ($(PRODUCT_BUILD_SYSTEM_IMAGE),false)
+  BUILDING_SYSTEM_IMAGE :=
+endif
+.KATI_READONLY := BUILDING_SYSTEM_IMAGE
+
+# Are we building a system_other image
+BUILDING_SYSTEM_OTHER_IMAGE :=
+ifeq ($(PRODUCT_BUILD_SYSTEM_OTHER_IMAGE),)
+  ifdef BUILDING_SYSTEM_IMAGE
+    ifeq ($(BOARD_USES_SYSTEM_OTHER_ODEX),true)
+      BUILDING_SYSTEM_OTHER_IMAGE := true
+    endif
+  endif
+else ifeq ($(PRODUCT_BUILD_SYSTEM_OTHER_IMAGE),true)
+  BUILDING_SYSTEM_OTHER_IMAGE := true
+  ifndef BUILDING_SYSTEM_IMAGE
+    $(error PRODUCT_BUILD_SYSTEM_OTHER_IMAGE = true requires building the system image)
+  endif
+endif
+.KATI_READONLY := BUILDING_SYSTEM_OTHER_IMAGE
+
+# Are we building a cache image
+BUILDING_CACHE_IMAGE :=
+ifeq ($(PRODUCT_BUILD_CACHE_IMAGE),)
+  ifdef BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE
+    BUILDING_CACHE_IMAGE := true
+  endif
+else ifeq ($(PRODUCT_BUILD_CACHE_IMAGE),true)
+  BUILDING_CACHE_IMAGE := true
+  ifndef BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE
+    $(error PRODUCT_BUILD_CACHE_IMAGE set to true, but BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE not defined)
+  endif
+endif
+.KATI_READONLY := BUILDING_CACHE_IMAGE
+
+# TODO: Add BUILDING_BOOT_IMAGE / BUILDING_RECOVERY_IMAGE
+# This gets complicated with BOARD_USES_RECOVERY_AS_BOOT, so skipping for now.
+
+# Are we building a ramdisk image
+BUILDING_RAMDISK_IMAGE := true
+ifeq ($(PRODUCT_BUILD_RAMDISK_IMAGE),)
+  # TODO: Be smarter about this. This probably only needs to happen when one of the follow is true:
+  #  BUILDING_BOOT_IMAGE
+  #  BUILDING_RECOVERY_IMAGE
+else ifeq ($(PRODUCT_BUILD_RAMDISK_IMAGE),false)
+  BUILDING_RAMDISK_IMAGE :=
+endif
+.KATI_READONLY := BUILDING_RAMDISK_IMAGE
+
+# Are we building a userdata image
+BUILDING_USERDATA_IMAGE :=
+ifeq ($(PRODUCT_BUILD_USERDATA_IMAGE),)
+  ifdef BOARD_USERDATAIMAGE_PARTITION_SIZE
+    BUILDING_USERDATA_IMAGE := true
+  endif
+else ifeq ($(PRODUCT_BUILD_USERDATA_IMAGE),true)
+  BUILDING_USERDATA_IMAGE := true
+endif
+.KATI_READONLY := BUILDING_USERDATA_IMAGE
+
+###########################################
+# Now we can substitute with the real value of TARGET_COPY_OUT_VENDOR
+ifeq ($(TARGET_COPY_OUT_VENDOR),$(_vendor_path_placeholder))
+  TARGET_COPY_OUT_VENDOR := system/vendor
+else ifeq ($(filter vendor system/vendor,$(TARGET_COPY_OUT_VENDOR)),)
+  $(error TARGET_COPY_OUT_VENDOR must be either 'vendor' or 'system/vendor', seeing '$(TARGET_COPY_OUT_VENDOR)'.)
+endif
+PRODUCT_COPY_FILES := $(subst $(_vendor_path_placeholder),$(TARGET_COPY_OUT_VENDOR),$(PRODUCT_COPY_FILES))
+
+BOARD_USES_VENDORIMAGE :=
+ifdef BOARD_PREBUILT_VENDORIMAGE
+  BOARD_USES_VENDORIMAGE := true
+endif
+ifdef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
+  BOARD_USES_VENDORIMAGE := true
+endif
+ifeq ($(TARGET_COPY_OUT_VENDOR),vendor)
+  BOARD_USES_VENDORIMAGE := true
+else ifdef BOARD_USES_VENDORIMAGE
+  $(error TARGET_COPY_OUT_VENDOR must be set to 'vendor' to use a vendor image)
+endif
+.KATI_READONLY := BOARD_USES_VENDORIMAGE
+
+BUILDING_VENDOR_IMAGE :=
+ifeq ($(PRODUCT_BUILD_VENDOR_IMAGE),)
+  ifdef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
+    BUILDING_VENDOR_IMAGE := true
+  endif
+else ifeq ($(PRODUCT_BUILD_VENDOR_IMAGE),true)
+  BUILDING_VENDOR_IMAGE := true
+  ifndef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
+    $(error PRODUCT_BUILD_VENDOR_IMAGE set to true, but BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE not defined)
+  endif
+endif
+ifdef BOARD_PREBUILT_VENDORIMAGE
+  BUILDING_VENDOR_IMAGE :=
+endif
+.KATI_READONLY := BUILDING_VENDOR_IMAGE
+
+###########################################
+# Now we can substitute with the real value of TARGET_COPY_OUT_PRODUCT
+ifeq ($(TARGET_COPY_OUT_PRODUCT),$(_product_path_placeholder))
+TARGET_COPY_OUT_PRODUCT := system/product
+else ifeq ($(filter product system/product,$(TARGET_COPY_OUT_PRODUCT)),)
+$(error TARGET_COPY_OUT_PRODUCT must be either 'product' or 'system/product', seeing '$(TARGET_COPY_OUT_PRODUCT)'.)
+endif
+PRODUCT_COPY_FILES := $(subst $(_product_path_placeholder),$(TARGET_COPY_OUT_PRODUCT),$(PRODUCT_COPY_FILES))
+
+BOARD_USES_PRODUCTIMAGE :=
+ifdef BOARD_PREBUILT_PRODUCTIMAGE
+  BOARD_USES_PRODUCTIMAGE := true
+endif
+ifdef BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE
+  BOARD_USES_PRODUCTIMAGE := true
+endif
+ifeq ($(TARGET_COPY_OUT_PRODUCT),product)
+  BOARD_USES_PRODUCTIMAGE := true
+else ifdef BOARD_USES_PRODUCTIMAGE
+  $(error TARGET_COPY_OUT_PRODUCT must be set to 'product' to use a product image)
+endif
+.KATI_READONLY := BOARD_USES_PRODUCTIMAGE
+
+BUILDING_PRODUCT_IMAGE :=
+ifeq ($(PRODUCT_BUILD_PRODUCT_IMAGE),)
+  ifdef BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE
+    BUILDING_PRODUCT_IMAGE := true
+  endif
+else ifeq ($(PRODUCT_BUILD_PRODUCT_IMAGE),true)
+  BUILDING_PRODUCT_IMAGE := true
+  ifndef BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE
+    $(error PRODUCT_BUILD_PRODUCT_IMAGE set to true, but BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE not defined)
+  endif
+endif
+ifdef BOARD_PREBUILT_PRODUCTIMAGE
+  BUILDING_PRODUCT_IMAGE :=
+endif
+.KATI_READONLY := BUILDING_PRODUCT_IMAGE
+
+###########################################
+# Now we can substitute with the real value of TARGET_COPY_OUT_PRODUCT_SERVICES
+MERGE_PRODUCT_SERVICES_INTO_PRODUCT :=
+ifeq ($(TARGET_COPY_OUT_PRODUCT_SERVICES),$(_product_services_path_placeholder))
+  TARGET_COPY_OUT_PRODUCT_SERVICES := $(TARGET_COPY_OUT_PRODUCT)
+  MERGE_PRODUCT_SERVICES_INTO_PRODUCT := true
+else ifeq ($(TARGET_COPY_OUT_PRODUCT),$(TARGET_COPY_OUT_PRODUCT_SERVICES))
+  MERGE_PRODUCT_SERVICES_INTO_PRODUCT := true
+else ifeq ($(filter product_services system/product_services,$(TARGET_COPY_OUT_PRODUCT_SERVICES)),)
+  $(error TARGET_COPY_OUT_PRODUCT_SERVICES must be either 'product_services',\
+    '$(TARGET_COPY_OUT_PRODUCT)' or 'system/product_services', seeing '$(TARGET_COPY_OUT_PRODUCT_SERVICES)'.)
+endif
+.KATI_READONLY := MERGE_PRODUCT_SERVICES_INTO_PRODUCT
+PRODUCT_COPY_FILES := $(subst $(_product_services_path_placeholder),$(TARGET_COPY_OUT_PRODUCT_SERVICES),$(PRODUCT_COPY_FILES))
+
+BOARD_USES_PRODUCT_SERVICESIMAGE :=
+ifdef BOARD_PREBUILT_PRODUCT_SERVICESIMAGE
+  BOARD_USES_PRODUCT_SERVICESIMAGE := true
+endif
+ifdef BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE
+  BOARD_USES_PRODUCT_SERVICESIMAGE := true
+endif
+ifeq ($(TARGET_COPY_OUT_PRODUCT_SERVICES),product_services)
+  BOARD_USES_PRODUCT_SERVICESIMAGE := true
+else ifdef BOARD_USES_PRODUCT_SERVICESIMAGE
+  $(error TARGET_COPY_OUT_PRODUCT_SERVICES must be set to 'product_services' to use a product_services image)
+endif
+
+BUILDING_PRODUCT_SERVICES_IMAGE :=
+ifeq ($(PRODUCT_BUILD_PRODUCT_SERVICES_IMAGE),)
+  ifdef BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE
+    BUILDING_PRODUCT_SERVICES_IMAGE := true
+  endif
+else ifeq ($(PRODUCT_BUILD_PRODUCT_SERVICES_IMAGE),true)
+  BUILDING_PRODUCT_SERVICES_IMAGE := true
+  ifndef BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE
+    $(error PRODUCT_BUILD_PRODUCT_SERVICES_IMAGE set to true, but BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE not defined)
+  endif
+endif
+ifdef BOARD_PREBUILT_PRODUCT_SERVICESIMAGE
+  BUILDING_PRODUCT_SERVICES_IMAGE :=
+endif
+.KATI_READONLY := BUILDING_PRODUCT_SERVICES_IMAGE
+
+###########################################
+# Now we can substitute with the real value of TARGET_COPY_OUT_ODM
+ifeq ($(TARGET_COPY_OUT_ODM),$(_odm_path_placeholder))
+  TARGET_COPY_OUT_ODM := vendor/odm
+else ifeq ($(filter odm vendor/odm,$(TARGET_COPY_OUT_ODM)),)
+  $(error TARGET_COPY_OUT_ODM must be either 'odm' or 'vendor/odm', seeing '$(TARGET_COPY_OUT_ODM)'.)
+endif
+PRODUCT_COPY_FILES := $(subst $(_odm_path_placeholder),$(TARGET_COPY_OUT_ODM),$(PRODUCT_COPY_FILES))
+
+BOARD_USES_ODMIMAGE :=
+ifdef BOARD_PREBUILT_ODMIMAGE
+  BOARD_USES_ODMIMAGE := true
+endif
+ifdef BOARD_ODMIMAGE_FILE_SYSTEM_TYPE
+  BOARD_USES_ODMIMAGE := true
+endif
+ifeq ($(TARGET_COPY_OUT_ODM),odm)
+  BOARD_USES_ODMIMAGE := true
+else ifdef BOARD_USES_ODMIMAGE
+  $(error TARGET_COPY_OUT_ODM must be set to 'odm' to use an odm image)
+endif
+
+BUILDING_ODM_IMAGE :=
+ifeq ($(ODM_BUILD_ODM_IMAGE),)
+  ifdef BOARD_ODMIMAGE_FILE_SYSTEM_TYPE
+    BUILDING_ODM_IMAGE := true
+  endif
+else ifeq ($(PRODUCT_BUILD_ODM_IMAGE),true)
+  BUILDING_ODM_IMAGE := true
+  ifndef BOARD_ODMIMAGE_FILE_SYSTEM_TYPE
+    $(error PRODUCT_BUILD_ODM_IMAGE set to true, but BOARD_ODMIMAGE_FILE_SYSTEM_TYPE not defined)
+  endif
+endif
+ifdef BOARD_PREBUILT_ODMIMAGE
+  BUILDING_ODM_IMAGE :=
+endif
+.KATI_READONLY := BUILDING_ODM_IMAGE
+
+###########################################
+# Ensure that only TARGET_RECOVERY_UPDATER_LIBS *or* AB_OTA_UPDATER is set.
+TARGET_RECOVERY_UPDATER_LIBS ?=
+AB_OTA_UPDATER ?=
+.KATI_READONLY := TARGET_RECOVERY_UPDATER_LIBS AB_OTA_UPDATER
+ifeq ($(AB_OTA_UPDATER),true)
+  ifneq ($(strip $(TARGET_RECOVERY_UPDATER_LIBS)),)
+    $(error Do not use TARGET_RECOVERY_UPDATER_LIBS when using AB_OTA_UPDATER)
+  endif
+endif
+
+# Check BOARD_VNDK_VERSION
+define check_vndk_version
+  $(eval vndk_path := prebuilts/vndk/v$(1)) \
+  $(if $(wildcard $(vndk_path)/*/Android.bp),,$(error VNDK version $(1) not found))
+endef
+
+ifdef BOARD_VNDK_VERSION
+  ifneq ($(BOARD_VNDK_VERSION),current)
+    $(error BOARD_VNDK_VERSION: Only "current" is implemented)
+  endif
+
+  TARGET_VENDOR_TEST_SUFFIX := /vendor
+else
+  TARGET_VENDOR_TEST_SUFFIX :=
+endif
+
+ifeq (,$(TARGET_BUILD_APPS))
+ifdef PRODUCT_EXTRA_VNDK_VERSIONS
+  $(foreach v,$(PRODUCT_EXTRA_VNDK_VERSIONS),$(call check_vndk_version,$(v)))
+endif
+endif
+
+# Ensure that BOARD_SYSTEMSDK_VERSIONS are all within PLATFORM_SYSTEMSDK_VERSIONS
+_unsupported_systemsdk_versions := $(filter-out $(PLATFORM_SYSTEMSDK_VERSIONS),$(BOARD_SYSTEMSDK_VERSIONS))
+ifneq (,$(_unsupported_systemsdk_versions))
+  $(error System SDK versions '$(_unsupported_systemsdk_versions)' in BOARD_SYSTEMSDK_VERSIONS are not supported.\
+          Supported versions are $(PLATFORM_SYSTEMSDK_VERSIONS))
+endif
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index c20dbef..1e3f6ae 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -222,7 +222,7 @@
 LOCAL_PROGUARD_FLAGS:=
 LOCAL_PROPRIETARY_MODULE:=
 LOCAL_PROTOC_FLAGS:=
-# lite(default),micro,nano,stream,full,nanopb-c,nanopb-c-enable_malloc
+# lite(default),micro,nano,stream,full,nanopb-c,nanopb-c-enable_malloc,nanopb-c-16bit,nanopb-c-enable_malloc-16bit,nanopb-c-32bit,nanopb-c-enable_malloc-32bit
 LOCAL_PROTOC_OPTIMIZE_TYPE:=
 LOCAL_PROTO_JAVA_OUTPUT_PARAMS:=
 LOCAL_R8_FLAG_FILES:=
diff --git a/core/combo/TARGET_linux-arm.mk b/core/combo/TARGET_linux-arm.mk
index 9514edb..cbca1fb 100644
--- a/core/combo/TARGET_linux-arm.mk
+++ b/core/combo/TARGET_linux-arm.mk
@@ -29,45 +29,38 @@
 # include defines, and compiler settings for the given architecture
 # version.
 #
-ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT)),)
-TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT := generic
-endif
 
 KNOWN_ARMv8_CORES := cortex-a53 cortex-a53.a57 cortex-a55 cortex-a73 cortex-a75 cortex-a76
 KNOWN_ARMv8_CORES += kryo kryo385 exynos-m1 exynos-m2
 
 KNOWN_ARMv82a_CORES := cortex-a55 cortex-a75 kryo385
 
-# Check for cores that implement armv8-2a ISAs.
+ifeq (,$(strip $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT)))
+  TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT := generic
+endif
+
+# This sanity checks TARGET_2ND_ARCH_VARIANT against the lists above.
 ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv82a_CORES)))
-  ifneq ($(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT),armv8-2a)
-    $(warning $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT) is armv8-2a.)
-    ifneq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
-      $(warning TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT, $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT), ignored! Use armv8-2a instead.)
-    endif
-    # Overwrite TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT
+  ifeq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
     TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT := armv8-2a
+  else ifneq (armv8-2a,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
+    $(error Incorrect TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT, $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT). Use armv8-2a instead.)
   endif
-# Many devices (incorrectly) use armv7-a-neon as the 2nd architecture variant
-# for cores that implement armv8-a ISAs. The following sets it to armv8-a.
 else ifneq (,$(filter $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT), $(KNOWN_ARMv8_CORES)))
-  ifneq ($(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT),armv8-a)
-    $(warning $(TARGET_$(combo_2nd_arch_prefix)CPU_VARIANT) is armv8-a.)
-    ifneq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
-      $(warning TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT, $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT), ignored! Use armv8-a instead.)
-    endif
-    # Overwrite TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT
+  ifeq (,$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
     TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT := armv8-a
+  else ifneq ($(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT),armv8-a)
+    $(error Incorrect TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT, $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT). Use armv8-a instead.)
   endif
 endif
 
 ifeq ($(strip $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT)),)
-$(error TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT must be set)
+  $(error TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT must be set)
 endif
 
 TARGET_ARCH_SPECIFIC_MAKEFILE := $(BUILD_COMBOS)/arch/$(TARGET_$(combo_2nd_arch_prefix)ARCH)/$(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT).mk
 ifeq ($(strip $(wildcard $(TARGET_ARCH_SPECIFIC_MAKEFILE))),)
-$(error Unknown ARM architecture version: $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
+  $(error Unknown ARM architecture version: $(TARGET_$(combo_2nd_arch_prefix)ARCH_VARIANT))
 endif
 
 include $(TARGET_ARCH_SPECIFIC_MAKEFILE)
diff --git a/core/config.mk b/core/config.mk
index 518e138..242558e 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -208,15 +208,6 @@
 endif
 
 # ###############################################################
-# Broken build defaults
-# ###############################################################
-BUILD_BROKEN_ANDROIDMK_EXPORTS :=
-BUILD_BROKEN_DUP_COPY_HEADERS :=
-BUILD_BROKEN_DUP_RULES :=
-BUILD_BROKEN_PHONY_TARGETS :=
-BUILD_BROKEN_ENG_DEBUG_TAGS :=
-
-# ###############################################################
 # Include sub-configuration files
 # ###############################################################
 
@@ -296,17 +287,7 @@
 TARGET_PRODUCT_KERNEL_HEADERS := $(strip $(wildcard $(PRODUCT_VENDOR_KERNEL_HEADERS)))
 TARGET_PRODUCT_KERNEL_HEADERS := $(patsubst %/,%,$(TARGET_PRODUCT_KERNEL_HEADERS))
 $(call validate-kernel-headers,$(TARGET_PRODUCT_KERNEL_HEADERS))
-
-# Clean up/verify variables defined by the board config file.
-TARGET_BOOTLOADER_BOARD_NAME := $(strip $(TARGET_BOOTLOADER_BOARD_NAME))
-TARGET_CPU_ABI := $(strip $(TARGET_CPU_ABI))
-ifeq ($(TARGET_CPU_ABI),)
-  $(error No TARGET_CPU_ABI defined by board config: $(board_config_mk))
-endif
-TARGET_CPU_ABI2 := $(strip $(TARGET_CPU_ABI2))
-
-BOARD_KERNEL_BASE := $(strip $(BOARD_KERNEL_BASE))
-BOARD_KERNEL_PAGESIZE := $(strip $(BOARD_KERNEL_PAGESIZE))
+.KATI_READONLY := TARGET_DEVICE_KERNEL_HEADERS TARGET_BOARD_KERNEL_HEADERS TARGET_PRODUCT_KERNEL_HEADERS
 
 # Commands to generate .toc file common to ELF .so files.
 define _gen_toc_command_for_elf
@@ -320,44 +301,6 @@
 $(hide) $(HOST_NM) -gP $(1) | cut -f1-2 -d" " | (grep -v U$$ >> $(2) || true)
 endef
 
-combo_target := HOST_
-combo_2nd_arch_prefix :=
-include $(BUILD_SYSTEM)/combo/select.mk
-
-# Load the 2nd host arch if it's needed.
-ifdef HOST_2ND_ARCH
-combo_target := HOST_
-combo_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
-include $(BUILD_SYSTEM)/combo/select.mk
-endif
-
-# Load the windows cross compiler under Linux
-ifdef HOST_CROSS_OS
-combo_target := HOST_CROSS_
-combo_2nd_arch_prefix :=
-include $(BUILD_SYSTEM)/combo/select.mk
-
-ifdef HOST_CROSS_2ND_ARCH
-combo_target := HOST_CROSS_
-combo_2nd_arch_prefix := $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)
-include $(BUILD_SYSTEM)/combo/select.mk
-endif
-endif
-
-# on windows, the tools have .exe at the end, and we depend on the
-# host config stuff being done first
-
-combo_target := TARGET_
-combo_2nd_arch_prefix :=
-include $(BUILD_SYSTEM)/combo/select.mk
-
-# Load the 2nd target arch if it's needed.
-ifdef TARGET_2ND_ARCH
-combo_target := TARGET_
-combo_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
-include $(BUILD_SYSTEM)/combo/select.mk
-endif
-
 ifeq ($(CALLED_FROM_SETUP),true)
 include $(BUILD_SYSTEM)/ccache.mk
 include $(BUILD_SYSTEM)/goma.mk
@@ -368,62 +311,6 @@
 TARGET_PREFER_32_BIT_EXECUTABLES := true
 endif
 
-ifeq (,$(filter true,$(TARGET_SUPPORTS_32_BIT_APPS) $(TARGET_SUPPORTS_64_BIT_APPS)))
-  TARGET_SUPPORTS_32_BIT_APPS := true
-endif
-
-# Sanity check to warn about likely cryptic errors later in the build.
-ifeq ($(TARGET_IS_64_BIT),true)
-  ifeq (,$(filter true false,$(TARGET_SUPPORTS_64_BIT_APPS)))
-    $(warning Building a 32-bit-app-only product on a 64-bit device. \
-      If this is intentional, set TARGET_SUPPORTS_64_BIT_APPS := false)
-  endif
-endif
-
-# "ro.product.cpu.abilist32" and "ro.product.cpu.abilist64" are
-# comma separated lists of the 32 and 64 bit ABIs (in order of
-# preference) that the target supports. If TARGET_CPU_ABI_LIST_{32,64}_BIT
-# are defined by the board config, we use them. Else, we construct
-# these lists based on whether TARGET_IS_64_BIT is set.
-#
-# Note that this assumes that the 2ND_CPU_ABI for a 64 bit target
-# is always 32 bits. If this isn't the case, these variables should
-# be overriden in the board configuration.
-ifeq (,$(TARGET_CPU_ABI_LIST_64_BIT))
-  ifeq (true|true,$(TARGET_IS_64_BIT)|$(TARGET_SUPPORTS_64_BIT_APPS))
-    TARGET_CPU_ABI_LIST_64_BIT := $(TARGET_CPU_ABI) $(TARGET_CPU_ABI2)
-  endif
-endif
-
-ifeq (,$(TARGET_CPU_ABI_LIST_32_BIT))
-  ifneq (true,$(TARGET_IS_64_BIT))
-    TARGET_CPU_ABI_LIST_32_BIT := $(TARGET_CPU_ABI) $(TARGET_CPU_ABI2)
-  else
-    ifeq (true,$(TARGET_SUPPORTS_32_BIT_APPS))
-      # For a 64 bit target, assume that the 2ND_CPU_ABI
-      # is a 32 bit ABI.
-      TARGET_CPU_ABI_LIST_32_BIT := $(TARGET_2ND_CPU_ABI) $(TARGET_2ND_CPU_ABI2)
-    endif
-  endif
-endif
-
-# "ro.product.cpu.abilist" is a comma separated list of ABIs (in order
-# of preference) that the target supports. If a TARGET_CPU_ABI_LIST
-# is specified by the board configuration, we use that. If not, we
-# build a list out of the TARGET_CPU_ABIs specified by the config.
-ifeq (,$(TARGET_CPU_ABI_LIST))
-  ifeq ($(TARGET_IS_64_BIT)|$(TARGET_PREFER_32_BIT_APPS),true|true)
-    TARGET_CPU_ABI_LIST := $(TARGET_CPU_ABI_LIST_32_BIT) $(TARGET_CPU_ABI_LIST_64_BIT)
-  else
-    TARGET_CPU_ABI_LIST := $(TARGET_CPU_ABI_LIST_64_BIT) $(TARGET_CPU_ABI_LIST_32_BIT)
-  endif
-endif
-
-# Strip whitespace from the ABI list string.
-TARGET_CPU_ABI_LIST := $(subst $(space),$(comma),$(strip $(TARGET_CPU_ABI_LIST)))
-TARGET_CPU_ABI_LIST_32_BIT := $(subst $(space),$(comma),$(strip $(TARGET_CPU_ABI_LIST_32_BIT)))
-TARGET_CPU_ABI_LIST_64_BIT := $(subst $(space),$(comma),$(strip $(TARGET_CPU_ABI_LIST_64_BIT)))
-
 # GCC version selection
 TARGET_GCC_VERSION := 4.9
 ifdef TARGET_2ND_ARCH
@@ -879,6 +766,7 @@
 else
   DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/testkey
 endif
+.KATI_READONLY := DEFAULT_SYSTEM_DEV_CERTIFICATE
 
 BUILD_NUMBER_FROM_FILE := $$(cat $(OUT_DIR)/build_number.txt)
 BUILD_DATETIME_FROM_FILE := $$(cat $(BUILD_DATETIME_FILE))
@@ -1055,7 +943,7 @@
 endif
 
 # The metadata device must be supplied to init via the kernel command-line.
-BOARD_KERNEL_CMDLINE += androidboot.super_partition=$(BOARD_SUPER_PARTITION_METADATA_DEVICE)
+INTERNAL_KERNEL_CMDLINE += androidboot.super_partition=$(BOARD_SUPER_PARTITION_METADATA_DEVICE)
 
 BOARD_BUILD_RETROFIT_DYNAMIC_PARTITIONS_OTA_PACKAGE := true
 
@@ -1089,7 +977,7 @@
 endif
 
 ifneq ($(BOARD_SUPER_PARTITION_METADATA_DEVICE),super)
-BOARD_KERNEL_CMDLINE += androidboot.super_partition=$(BOARD_SUPER_PARTITION_METADATA_DEVICE)
+INTERNAL_KERNEL_CMDLINE += androidboot.super_partition=$(BOARD_SUPER_PARTITION_METADATA_DEVICE)
 endif
 BOARD_BUILD_RETROFIT_DYNAMIC_PARTITIONS_OTA_PACKAGE :=
 
@@ -1135,11 +1023,13 @@
 first_non_empty_of_three = $(if $(1),$(1),$(if $(2),$(2),$(3)))
 DEX2OAT_TARGET_ARCH := $(TARGET_ARCH)
 DEX2OAT_TARGET_CPU_VARIANT := $(call first_non_empty_of_three,$(TARGET_CPU_VARIANT),$(TARGET_ARCH_VARIANT),default)
+DEX2OAT_TARGET_CPU_VARIANT_RUNTIME := $(call first_non_empty_of_three,$(TARGET_CPU_VARIANT_RUNTIME),$(TARGET_ARCH_VARIANT),default)
 DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := default
 
 ifdef TARGET_2ND_ARCH
 $(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_ARCH := $(TARGET_2ND_ARCH)
 $(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_CPU_VARIANT := $(call first_non_empty_of_three,$(TARGET_2ND_CPU_VARIANT),$(TARGET_2ND_ARCH_VARIANT),default)
+$(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_CPU_VARIANT_RUNTIME := $(call first_non_empty_of_three,$(TARGET_2ND_CPU_VARIANT_RUNTIME),$(TARGET_2ND_ARCH_VARIANT),default)
 $(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES := default
 endif
 
diff --git a/core/definitions.mk b/core/definitions.mk
index c97f647..c46a873 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -2225,7 +2225,7 @@
 @mkdir -p $(dir $@)
 $(hide) rm -f $(dir $@)classes*.dex $(dir $@)d8_input.jar
 $(hide) $(ZIP2ZIP) -j -i $< -o $(dir $@)d8_input.jar "**/*.class"
-$(hide) $(DX_COMMAND) \
+$(hide) $(DX_COMMAND) $(DEX_FLAGS) \
     --output $(dir $@) \
     $(addprefix --lib ,$(PRIVATE_D8_LIBS)) \
     --min-api $(PRIVATE_MIN_SDK_VERSION) \
@@ -2388,7 +2388,7 @@
 define run-appcompat
 $(hide) \
   echo "appcompat.sh output:" >> $(PRODUCT_OUT)/appcompat/$(PRIVATE_MODULE).log && \
-  PACKAGING=$(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING ANDROID_LOG_TAGS="*:e" art/tools/veridex/appcompat.sh --dex-file=$@ 2>&1 >> $(PRODUCT_OUT)/appcompat/$(PRIVATE_MODULE).log
+  PACKAGING=$(TARGET_OUT_COMMON_INTERMEDIATES)/PACKAGING ANDROID_LOG_TAGS="*:e" art/tools/veridex/appcompat.sh --dex-file=$@ --api-flags=$(INTERNAL_PLATFORM_HIDDENAPI_FLAGS) 2>&1 >> $(PRODUCT_OUT)/appcompat/$(PRIVATE_MODULE).log
 endef
 appcompat-files = \
   art/tools/veridex/appcompat.sh \
@@ -2697,7 +2697,8 @@
 define transform-jar-to-dex-r8
 @echo R8: $@
 $(hide) rm -f $(PRIVATE_PROGUARD_DICTIONARY)
-$(hide) $(R8_COMPAT_PROGUARD) -injars '$<' \
+$(hide) $(R8_COMPAT_PROGUARD) $(DEX_FLAGS) \
+    -injars '$<' \
     --min-api $(PRIVATE_MIN_SDK_VERSION) \
     --no-data-resources \
     --force-proguard-compatibility --output $(subst classes.dex,,$@) \
diff --git a/core/dex_preopt.mk b/core/dex_preopt.mk
index 7471c47..d43158e 100644
--- a/core/dex_preopt.mk
+++ b/core/dex_preopt.mk
@@ -13,36 +13,24 @@
 install-on-system-other = $(filter-out $(PRODUCT_DEXPREOPT_SPEED_APPS) $(PRODUCT_SYSTEM_SERVER_APPS),$(basename $(notdir $(filter $(foreach f,$(SYSTEM_OTHER_ODEX_FILTER),$(TARGET_OUT)/$(f)),$(1)))))
 endif
 
-# Special rules for building stripped boot jars that override java_library.mk rules
+# Install boot images. Note that there can be multiple.
+DEFAULT_DEX_PREOPT_INSTALLED_IMAGE :=
+$(TARGET_2ND_ARCH_VAR_PREFIX)DEFAULT_DEX_PREOPT_INSTALLED_IMAGE :=
+$(foreach my_boot_image_name,$(DEXPREOPT_IMAGE_NAMES),$(eval include $(BUILD_SYSTEM)/dex_preopt_libart.mk))
 
-# $(1): boot jar module name
-define _dexpreopt-boot-jar-remove-classes.dex
-_dbj_jar_no_dex := $(DEXPREOPT_BOOT_JAR_DIR_FULL_PATH)/$(1)_nodex.jar
-_dbj_src_jar := $(call intermediates-dir-for,JAVA_LIBRARIES,$(1),,COMMON)/javalib.jar
+boot_profile_jars_zip := $(PRODUCT_OUT)/boot_profile_jars.zip
+bootclasspath_jars := $(DEXPREOPT_BOOTCLASSPATH_DEX_FILES)
+system_server_jars := $(foreach m,$(PRODUCT_SYSTEM_SERVER_JARS),$(PRODUCT_OUT)/system/framework/$(m).jar)
 
-$(call dexpreopt-copy-jar,$$(_dbj_src_jar),$$(_dbj_jar_no_dex),$(filter-out nostripping,$(DEX_PREOPT_DEFAULT)))
-
-_dbj_jar_no_dex :=
-_dbj_src_jar :=
-endef
-
-$(foreach b,$(DEXPREOPT_BOOT_JARS_MODULES),$(eval $(call _dexpreopt-boot-jar-remove-classes.dex,$(b))))
-
-include $(BUILD_SYSTEM)/dex_preopt_libart.mk
+$(boot_profile_jars_zip): PRIVATE_BOOTCLASSPATH_JARS := $(bootclasspath_jars)
+$(boot_profile_jars_zip): PRIVATE_SYSTEM_SERVER_JARS := $(system_server_jars)
+$(boot_profile_jars_zip): $(bootclasspath_jars) $(system_server_jars) $(SOONG_ZIP)
+	@echo "Create boot profiles package: $@"
+	rm -f $@
+	$(SOONG_ZIP) -o $@ \
+	  -C $(dir $(firstword $(PRIVATE_BOOTCLASSPATH_JARS)))/.. $(addprefix -f ,$(PRIVATE_BOOTCLASSPATH_JARS)) \
+	  -C $(PRODUCT_OUT) $(addprefix -f ,$(PRIVATE_SYSTEM_SERVER_JARS))
 
 ifeq ($(PRODUCT_DIST_BOOT_AND_SYSTEM_JARS),true)
-boot_profile_jars_zip := $(PRODUCT_OUT)/boot_profile_jars.zip
-all_boot_jars := \
-  $(DEXPREOPT_BOOTCLASSPATH_DEX_FILES) \
-  $(foreach m,$(PRODUCT_SYSTEM_SERVER_JARS),$(PRODUCT_OUT)/system/framework/$(m).jar)
-
-$(boot_profile_jars_zip): PRIVATE_JARS := $(all_boot_jars)
-$(boot_profile_jars_zip): $(all_boot_jars) $(SOONG_ZIP)
-	echo "Create boot profiles package: $@"
-	rm -f $@
-	$(SOONG_ZIP) -o $@ -C $(PRODUCT_OUT) $(addprefix -f ,$(PRIVATE_JARS))
-
-droidcore: $(boot_profile_jars_zip)
-
 $(call dist-for-goals, droidcore, $(boot_profile_jars_zip))
 endif
diff --git a/core/dex_preopt_config.mk b/core/dex_preopt_config.mk
index e3b720b..13e4634 100644
--- a/core/dex_preopt_config.mk
+++ b/core/dex_preopt_config.mk
@@ -20,7 +20,6 @@
 endif
 # Conditional to building on linux, as dex2oat currently does not work on darwin.
 ifeq ($(HOST_OS),linux)
-  WITH_DEXPREOPT ?= true
   ifeq (eng,$(TARGET_BUILD_VARIANT))
     # Don't strip for quick development turnarounds.
     DEX_PREOPT_DEFAULT := nostripping
@@ -47,9 +46,9 @@
 # Default to debug version to help find bugs.
 # Set USE_DEX2OAT_DEBUG to false for only building non-debug versions.
 ifeq ($(USE_DEX2OAT_DEBUG),false)
-DEX2OAT := $(HOST_OUT_EXECUTABLES)/dex2oat$(HOST_EXECUTABLE_SUFFIX)
+DEX2OAT := $(SOONG_HOST_OUT_EXECUTABLES)/dex2oat$(HOST_EXECUTABLE_SUFFIX)
 else
-DEX2OAT := $(HOST_OUT_EXECUTABLES)/dex2oatd$(HOST_EXECUTABLE_SUFFIX)
+DEX2OAT := $(SOONG_HOST_OUT_EXECUTABLES)/dex2oatd$(HOST_EXECUTABLE_SUFFIX)
 endif
 
 DEX2OAT_DEPENDENCY += $(DEX2OAT)
@@ -62,25 +61,6 @@
 DIRTY_IMAGE_OBJECTS := $(call word-colon,1,$(firstword \
     $(filter %system/etc/dirty-image-objects,$(PRODUCT_COPY_FILES))))
 
-# If we use a boot image profile.
-my_use_profile_for_boot_image := $(PRODUCT_USE_PROFILE_FOR_BOOT_IMAGE)
-ifeq (,$(my_use_profile_for_boot_image))
-  # If not set, set the default to true if we are not a PDK build. PDK builds
-  # can't build the profile since they don't have frameworks/base.
-  ifneq (true,$(TARGET_BUILD_PDK))
-    my_use_profile_for_boot_image := true
-  endif
-endif
-
-ifeq (true,$(my_use_profile_for_boot_image))
-  boot_image_profiles := $(PRODUCT_DEX_PREOPT_BOOT_IMAGE_PROFILE_LOCATION)
-
-  ifeq (,$(boot_image_profiles))
-  # If not set, use the default.
-  boot_image_profiles := frameworks/base/config/boot-image-profile.txt
-  endif
-endif
-
 define get-product-default-property
 $(strip \
   $(eval _prop := $(patsubst $(1)=%,%,$(filter $(1)=%,$(PRODUCT_DEFAULT_PROPERTY_OVERRIDES))))\
@@ -107,15 +87,18 @@
   $(call json_start)
 
   $(call add_json_bool, DefaultNoStripping,                 $(filter nostripping,$(DEX_PREOPT_DEFAULT)))
+  $(call add_json_bool, DisablePreopt,                      $(call invert_bool,$(filter true,$(WITH_DEXPREOPT))))
   $(call add_json_list, DisablePreoptModules,               $(DEXPREOPT_DISABLED_MODULES))
   $(call add_json_bool, OnlyPreoptBootImageAndSystemServer, $(filter true,$(WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY)))
+  $(call add_json_bool, GenerateApexImage,                  $(filter true,$(DEXPREOPT_GENERATE_APEX_IMAGE)))
   $(call add_json_bool, DontUncompressPrivAppsDex,          $(filter true,$(DONT_UNCOMPRESS_PRIV_APPS_DEXS)))
   $(call add_json_list, ModulesLoadedByPrivilegedModules,   $(PRODUCT_LOADED_BY_PRIVILEGED_MODULES))
   $(call add_json_bool, HasSystemOther,                     $(BOARD_USES_SYSTEM_OTHER_ODEX))
   $(call add_json_list, PatternsOnSystemOther,              $(SYSTEM_OTHER_ODEX_FILTER))
   $(call add_json_bool, DisableGenerateProfile,             $(filter false,$(WITH_DEX_PREOPT_GENERATE_PROFILE)))
+  $(call add_json_str,  ProfileDir,                         $(PRODUCT_DEX_PREOPT_PROFILE_DIR))
   $(call add_json_list, BootJars,                           $(PRODUCT_BOOT_JARS))
-  $(call add_json_list, TargetCoreJars,                     $(TARGET_CORE_JARS))
+  $(call add_json_list, RuntimeApexJars,                    $(RUNTIME_APEX_JARS))
   $(call add_json_list, ProductUpdatableBootModules,        $(PRODUCT_UPDATABLE_BOOT_MODULES))
   $(call add_json_list, ProductUpdatableBootLocations,      $(PRODUCT_UPDATABLE_BOOT_LOCATIONS))
   $(call add_json_list, SystemServerJars,                   $(PRODUCT_SYSTEM_SERVER_JARS))
@@ -155,15 +138,16 @@
 
   $(call add_json_str,  DirtyImageObjects,                  $(DIRTY_IMAGE_OBJECTS))
   $(call add_json_str,  PreloadedClasses,                   $(PRELOADED_CLASSES))
-  $(call add_json_list, BootImageProfiles,                  $(boot_image_profiles))
+  $(call add_json_list, BootImageProfiles,                  $(PRODUCT_DEX_PREOPT_BOOT_IMAGE_PROFILE_LOCATION))
+  $(call add_json_bool, UseProfileForBootImage,             $(call invert_bool,$(filter false,$(PRODUCT_USE_PROFILE_FOR_BOOT_IMAGE))))
   $(call add_json_str,  BootFlags,                          $(PRODUCT_DEX_PREOPT_BOOT_FLAGS))
   $(call add_json_str,  Dex2oatImageXmx,                    $(DEX2OAT_IMAGE_XMX))
   $(call add_json_str,  Dex2oatImageXms,                    $(DEX2OAT_IMAGE_XMS))
 
   $(call add_json_map,  Tools)
-  $(call add_json_str,  Profman,                            $(PROFMAN))
+  $(call add_json_str,  Profman,                            $(SOONG_HOST_OUT_EXECUTABLES)/profman)
   $(call add_json_str,  Dex2oat,                            $(DEX2OAT))
-  $(call add_json_str,  Aapt,                               $(AAPT))
+  $(call add_json_str,  Aapt,                               $(SOONG_HOST_OUT_EXECUTABLES)/aapt)
   $(call add_json_str,  SoongZip,                           $(SOONG_ZIP))
   $(call add_json_str,  Zip2zip,                            $(ZIP2ZIP))
   $(call add_json_str,  VerifyUsesLibraries,                $(BUILD_SYSTEM)/verify_uses_libraries.sh)
@@ -190,9 +174,9 @@
 	@#empty
 
 DEXPREOPT_GEN_DEPS := \
-  $(PROFMAN) \
+  $(SOONG_HOST_OUT_EXECUTABLES)/profman \
   $(DEX2OAT) \
-  $(AAPT) \
+  $(SOONG_HOST_OUT_EXECUTABLES)/aapt \
   $(SOONG_ZIP) \
   $(ZIP2ZIP) \
   $(BUILD_SYSTEM)/verify_uses_libraries.sh \
diff --git a/core/dex_preopt_libart.mk b/core/dex_preopt_libart.mk
index 2bfe881..edd82df 100644
--- a/core/dex_preopt_libart.mk
+++ b/core/dex_preopt_libart.mk
@@ -1,5 +1,7 @@
 ####################################
-# dexpreopt support for ART
+# ART boot image installation
+# Input variable:
+#   my_boot_image_name: the boot image to install
 #
 ####################################
 
@@ -10,7 +12,7 @@
 
 # Install primary arch vdex files into a shared location, and then symlink them to both the primary
 # and secondary arch directories.
-my_vdex_copy_pairs := $(DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_$(TARGET_ARCH))
+my_vdex_copy_pairs := $(DEXPREOPT_IMAGE_VDEX_BUILT_INSTALLED_$(my_boot_image_name)_$(TARGET_ARCH))
 my_installed := $(foreach v,$(my_vdex_copy_pairs),$(PRODUCT_OUT)$(call word-colon,2,$(v)))
 $(firstword $(my_installed)): $(wordlist 2,9999,$(my_installed))
 
diff --git a/core/dex_preopt_libart_boot.mk b/core/dex_preopt_libart_boot.mk
index ec9aad7..34b8526 100644
--- a/core/dex_preopt_libart_boot.mk
+++ b/core/dex_preopt_libart_boot.mk
@@ -1,19 +1,21 @@
-# Rules to install boot.art built by dexpreopt_bootjars.go
+# Rules to install a boot image built by dexpreopt_bootjars.go
 # Input variables:
+#   my_boot_image_name: the boot image to install
 #   my_2nd_arch_prefix: indicates if this is to build for the 2nd arch.
 #   my_dexpreopt_image_extra_deps: extra dependencies to add on the installed boot.art
 
 # Install the boot images compiled by Soong
 # The first file (generally boot.art) is saved as DEFAULT_DEX_PREOPT_INSTALLED_IMAGE,
 # and the rest are added as dependencies of the first.
-my_installed := $(call copy-many-files,$(DEXPREOPT_IMAGE_BUILT_INSTALLED_$(TARGET_$(my_2nd_arch_prefix)ARCH)),$(PRODUCT_OUT))
+
+my_installed := $(call copy-many-files,$(DEXPREOPT_IMAGE_BUILT_INSTALLED_$(my_boot_image_name)_$(TARGET_$(my_2nd_arch_prefix)ARCH)),$(PRODUCT_OUT))
 $(firstword $(my_installed)): $(wordlist 2,9999,$(my_installed))
-$(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_INSTALLED_IMAGE := $(firstword $(my_installed))
+$(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_INSTALLED_IMAGE += $(firstword $(my_installed))
 
 # Install the unstripped boot images compiled by Soong into the symbols directory
 # The first file (generally boot.art) made a dependency of DEFAULT_DEX_PREOPT_INSTALLED_IMAGE,
 # and the rest are added as dependencies of the first.
-my_installed := $(call copy-many-files,$(DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_$(TARGET_$(my_2nd_arch_prefix)ARCH)),$(TARGET_OUT_UNSTRIPPED))
+my_installed := $(call copy-many-files,$(DEXPREOPT_IMAGE_UNSTRIPPED_BUILT_INSTALLED_$(my_boot_image_name)_$(TARGET_$(my_2nd_arch_prefix)ARCH)),$(TARGET_OUT_UNSTRIPPED))
 $(firstword $(my_installed)): $(wordlist 2,9999,$(my_installed))
 $($(my_2nd_arch_prefix)DEFAULT_DEX_PREOPT_INSTALLED_IMAGE): $(firstword $(my_installed))
 
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index 0beead9..3d02cdc 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -150,13 +150,13 @@
     # #################################################
     # Odex for the 1st arch
     my_dexpreopt_archs += $(TARGET_ARCH)
-    my_dexpreopt_images += $(DEXPREOPT_IMAGE_$(TARGET_ARCH))
+    my_dexpreopt_images += $(DEXPREOPT_IMAGE_boot_$(TARGET_ARCH))
     # Odex for the 2nd arch
     ifdef TARGET_2ND_ARCH
       ifneq ($(TARGET_TRANSLATE_2ND_ARCH),true)
         ifneq (first,$(my_module_multilib))
           my_dexpreopt_archs += $(TARGET_2ND_ARCH)
-          my_dexpreopt_images += $(DEXPREOPT_IMAGE_$(TARGET_2ND_ARCH))
+          my_dexpreopt_images += $(DEXPREOPT_IMAGE_boot_$(TARGET_2ND_ARCH))
         endif  # my_module_multilib is not first.
       endif  # TARGET_TRANSLATE_2ND_ARCH not true
     endif  # TARGET_2ND_ARCH
@@ -166,13 +166,13 @@
     # Save the module multilib since setup_one_odex modifies it.
     my_2nd_arch_prefix := $(LOCAL_2ND_ARCH_VAR_PREFIX)
     my_dexpreopt_archs += $(TARGET_$(my_2nd_arch_prefix)ARCH)
-    my_dexpreopt_images += $(DEXPREOPT_IMAGE_$(TARGET_$(my_2nd_arch_prefix)ARCH))
+    my_dexpreopt_images += $(DEXPREOPT_IMAGE_boot_$(TARGET_$(my_2nd_arch_prefix)ARCH))
     ifdef TARGET_2ND_ARCH
       ifeq ($(my_module_multilib),both)
         # The non-preferred arch
         my_2nd_arch_prefix := $(if $(LOCAL_2ND_ARCH_VAR_PREFIX),,$(TARGET_2ND_ARCH_VAR_PREFIX))
         my_dexpreopt_archs += $(TARGET_$(my_2nd_arch_prefix)ARCH)
-        my_dexpreopt_images += $(DEXPREOPT_IMAGE_$(TARGET_$(my_2nd_arch_prefix)ARCH))
+        my_dexpreopt_images += $(DEXPREOPT_IMAGE_boot_$(TARGET_$(my_2nd_arch_prefix)ARCH))
       endif  # LOCAL_MULTILIB is both
     endif  # TARGET_2ND_ARCH
   endif  # LOCAL_MODULE_CLASS
@@ -190,10 +190,12 @@
 
   $(call json_start)
 
+  # DexPath, StripInputPath, and StripOutputPath are not set, they will
+  # be filled in by dexpreopt_gen.
+
   $(call add_json_str,  Name,                           $(LOCAL_MODULE))
   $(call add_json_str,  DexLocation,                    $(patsubst $(PRODUCT_OUT)%,%,$(LOCAL_INSTALLED_MODULE)))
   $(call add_json_str,  BuildPath,                      $(LOCAL_BUILT_MODULE))
-  $(call add_json_str,  DexPath,                        $$1)
   $(call add_json_str,  ExtrasOutputPath,               $$2)
   $(call add_json_bool, Privileged,                     $(filter true,$(LOCAL_PRIVILEGED_MODULE)))
   $(call add_json_bool, UncompressedDex,                $(filter true,$(LOCAL_UNCOMPRESS_DEX)))
@@ -218,8 +220,6 @@
   $(call add_json_bool, PresignedPrebuilt,              $(filter PRESIGNED,$(LOCAL_CERTIFICATE)))
 
   $(call add_json_bool, NoStripping,                    $(filter nostripping,$(LOCAL_DEX_PREOPT)))
-  $(call add_json_str,  StripInputPath,                 $$1)
-  $(call add_json_str,  StripOutputPath,                $$2)
 
   $(call json_end)
 
@@ -244,7 +244,8 @@
   $(my_dexpreopt_script): $(my_dexpreopt_config) $(PRODUCT_OUT)/dexpreopt.config
 	@echo "$(PRIVATE_MODULE) dexpreopt gen"
 	$(DEXPREOPT_GEN) -global $(PRIVATE_GLOBAL_CONFIG) -module $(PRIVATE_MODULE_CONFIG) \
-	-dexpreopt_script $@ -strip_script $(PRIVATE_STRIP_SCRIPT)
+	-dexpreopt_script $@ -strip_script $(PRIVATE_STRIP_SCRIPT) \
+	-out_dir $(OUT_DIR)
 
   my_dexpreopt_deps := $(my_dex_jar)
   my_dexpreopt_deps += $(if $(my_process_profile),$(LOCAL_DEX_PREOPT_PROFILE))
diff --git a/core/envsetup.mk b/core/envsetup.mk
index e62636e..506ec4d 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -152,6 +152,45 @@
   HOST_2ND_ARCH :=
 endif
 
+HOST_2ND_ARCH_VAR_PREFIX := 2ND_
+HOST_2ND_ARCH_MODULE_SUFFIX := _32
+HOST_CROSS_2ND_ARCH_VAR_PREFIX := 2ND_
+HOST_CROSS_2ND_ARCH_MODULE_SUFFIX := _64
+TARGET_2ND_ARCH_VAR_PREFIX := 2ND_
+.KATI_READONLY := \
+  HOST_ARCH \
+  HOST_2ND_ARCH \
+  HOST_IS_64_BIT \
+  HOST_2ND_ARCH_VAR_PREFIX \
+  HOST_2ND_ARCH_MODULE_SUFFIX \
+  HOST_CROSS_2ND_ARCH_VAR_PREFIX \
+  HOST_CROSS_2ND_ARCH_MODULE_SUFFIX \
+  TARGET_2ND_ARCH_VAR_PREFIX \
+
+combo_target := HOST_
+combo_2nd_arch_prefix :=
+include $(BUILD_COMBOS)/select.mk
+
+ifdef HOST_2ND_ARCH
+  combo_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
+  include $(BUILD_SYSTEM)/combo/select.mk
+endif
+
+# Load the windows cross compiler under Linux
+ifdef HOST_CROSS_OS
+  combo_target := HOST_CROSS_
+  combo_2nd_arch_prefix :=
+  include $(BUILD_SYSTEM)/combo/select.mk
+
+  ifdef HOST_CROSS_2ND_ARCH
+    combo_2nd_arch_prefix := $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)
+    include $(BUILD_SYSTEM)/combo/select.mk
+  endif
+endif
+
+# on windows, the tools have .exe at the end, and we depend on the
+# host config stuff being done first
+
 BUILD_ARCH := $(HOST_ARCH)
 BUILD_2ND_ARCH := $(HOST_2ND_ARCH)
 
@@ -206,7 +245,10 @@
 #################################################################
 # Set up minimal BOOTCLASSPATH list of jars to build/execute
 # java code with dalvikvm/art.
-TARGET_CORE_JARS := core-oj core-libart conscrypt okhttp bouncycastle apache-xml
+# Jars present in the runtime apex. These should match exactly the list of
+# Java libraries in the runtime apex build rule.
+RUNTIME_APEX_JARS := core-oj core-libart okhttp bouncycastle apache-xml
+TARGET_CORE_JARS := $(RUNTIME_APEX_JARS) conscrypt
 ifeq ($(EMMA_INSTRUMENT),true)
   ifneq ($(EMMA_INSTRUMENT_STATIC),true)
     # For instrumented build, if Jacoco is not being included statically
@@ -229,349 +271,9 @@
 endif
 
 SDK_HOST_ARCH := x86
-
-# Boards may be defined under $(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)
-# or under vendor/*/$(TARGET_DEVICE).  Search in both places, but
-# make sure only one exists.
-# Real boards should always be associated with an OEM vendor.
-ifdef TARGET_DEVICE_DIR
-  ifneq ($(origin TARGET_DEVICE_DIR),command line)
-    $(error TARGET_DEVICE_DIR may not be set manually)
-  endif
-  board_config_mk := $(TARGET_DEVICE_DIR)/BoardConfig.mk
-else
-  board_config_mk := \
-    $(strip $(sort $(wildcard \
-      $(SRC_TARGET_DIR)/board/$(TARGET_DEVICE)/BoardConfig.mk \
-      $(shell test -d device && find -L device -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
-      $(shell test -d vendor && find -L vendor -maxdepth 4 -path '*/$(TARGET_DEVICE)/BoardConfig.mk') \
-    )))
-  ifeq ($(board_config_mk),)
-    $(error No config file found for TARGET_DEVICE $(TARGET_DEVICE))
-  endif
-  ifneq ($(words $(board_config_mk)),1)
-    $(error Multiple board config files for TARGET_DEVICE $(TARGET_DEVICE): $(board_config_mk))
-  endif
-  TARGET_DEVICE_DIR := $(patsubst %/,%,$(dir $(board_config_mk)))
-  .KATI_READONLY := TARGET_DEVICE_DIR
-endif
-include $(board_config_mk)
-ifeq ($(TARGET_ARCH),)
-  $(error TARGET_ARCH not defined by board config: $(board_config_mk))
-endif
-ifneq ($(MALLOC_IMPL),)
-  $(warning *** Unsupported option MALLOC_IMPL defined by board config: $(board_config_mk).)
-  $(error Use `MALLOC_SVELTE := true` to configure jemalloc for low-memory)
-endif
-board_config_mk :=
-
-###########################################
-# Handle BUILD_BROKEN_* settings
-vars := \
-  BUILD_BROKEN_ANDROIDMK_EXPORTS \
-  BUILD_BROKEN_DUP_COPY_HEADERS \
-  BUILD_BROKEN_DUP_RULES \
-  BUILD_BROKEN_PHONY_TARGETS \
-  BUILD_BROKEN_ENG_DEBUG_TAGS
-
-$(foreach var,$(vars),$(eval $(var) := $$(strip $$($(var)))))
-
-$(foreach var,$(vars), \
-  $(if $(filter-out true false,$($(var))), \
-    $(error Valid values of $(var) are "true", "false", and "". Not "$($(var))")))
-
-.KATI_READONLY := $(vars)
-
-ifneq ($(BUILD_BROKEN_ANDROIDMK_EXPORTS),true)
-$(KATI_obsolete_export It is a global setting. See $(CHANGES_URL)#export_keyword)
-endif
-
-###########################################
-# Now we can substitute with the real value of TARGET_COPY_OUT_RAMDISK
-ifeq ($(BOARD_BUILD_SYSTEM_ROOT_IMAGE),true)
-TARGET_COPY_OUT_RAMDISK := $(TARGET_COPY_OUT_ROOT)
-endif
-
-###########################################
-# Configure whether we're building the system image
-BUILDING_SYSTEM_IMAGE := true
-ifeq ($(PRODUCT_BUILD_SYSTEM_IMAGE),)
-  ifndef PRODUCT_USE_DYNAMIC_PARTITION_SIZE
-    ifndef BOARD_SYSTEMIMAGE_PARTITION_SIZE
-      BUILDING_SYSTEM_IMAGE :=
-    endif
-  endif
-else ifeq ($(PRODUCT_BUILD_SYSTEM_IMAGE),false)
-  BUILDING_SYSTEM_IMAGE :=
-endif
-.KATI_READONLY := BUILDING_SYSTEM_IMAGE
-
-# Are we building a system_other image
-BUILDING_SYSTEM_OTHER_IMAGE :=
-ifeq ($(PRODUCT_BUILD_SYSTEM_OTHER_IMAGE),)
-  ifdef BUILDING_SYSTEM_IMAGE
-    ifeq ($(BOARD_USES_SYSTEM_OTHER_ODEX),true)
-      BUILDING_SYSTEM_OTHER_IMAGE := true
-    endif
-  endif
-else ifeq ($(PRODUCT_BUILD_SYSTEM_OTHER_IMAGE),true)
-  BUILDING_SYSTEM_OTHER_IMAGE := true
-  ifndef BUILDING_SYSTEM_IMAGE
-    $(error PRODUCT_BUILD_SYSTEM_OTHER_IMAGE = true requires building the system image)
-  endif
-endif
-.KATI_READONLY := BUILDING_SYSTEM_OTHER_IMAGE
-
-# Are we building a cache image
-BUILDING_CACHE_IMAGE :=
-ifeq ($(PRODUCT_BUILD_CACHE_IMAGE),)
-  ifdef BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE
-    BUILDING_CACHE_IMAGE := true
-  endif
-else ifeq ($(PRODUCT_BUILD_CACHE_IMAGE),true)
-  BUILDING_CACHE_IMAGE := true
-  ifndef BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE
-    $(error PRODUCT_BUILD_CACHE_IMAGE set to true, but BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE not defined)
-  endif
-endif
-.KATI_READONLY := BUILDING_CACHE_IMAGE
-
-# TODO: Add BUILDING_BOOT_IMAGE / BUILDING_RECOVERY_IMAGE
-# This gets complicated with BOARD_USES_RECOVERY_AS_BOOT, so skipping for now.
-
-# Are we building a ramdisk image
-BUILDING_RAMDISK_IMAGE := true
-ifeq ($(PRODUCT_BUILD_RAMDISK_IMAGE),)
-  # TODO: Be smarter about this. This probably only needs to happen when one of the follow is true:
-  #  BUILDING_BOOT_IMAGE
-  #  BUILDING_RECOVERY_IMAGE
-else ifeq ($(PRODUCT_BUILD_RAMDISK_IMAGE),false)
-  BUILDING_RAMDISK_IMAGE :=
-endif
-.KATI_READONLY := BUILDING_RAMDISK_IMAGE
-
-# Are we building a userdata image
-BUILDING_USERDATA_IMAGE :=
-ifeq ($(PRODUCT_BUILD_USERDATA_IMAGE),)
-  ifdef BOARD_USERDATAIMAGE_PARTITION_SIZE
-    BUILDING_USERDATA_IMAGE := true
-  endif
-else ifeq ($(PRODUCT_BUILD_USERDATA_IMAGE),true)
-  BUILDING_USERDATA_IMAGE := true
-endif
-.KATI_READONLY := BUILDING_USERDATA_IMAGE
-
-###########################################
-# Now we can substitute with the real value of TARGET_COPY_OUT_VENDOR
-ifeq ($(TARGET_COPY_OUT_VENDOR),$(_vendor_path_placeholder))
-  TARGET_COPY_OUT_VENDOR := system/vendor
-else ifeq ($(filter vendor system/vendor,$(TARGET_COPY_OUT_VENDOR)),)
-  $(error TARGET_COPY_OUT_VENDOR must be either 'vendor' or 'system/vendor', seeing '$(TARGET_COPY_OUT_VENDOR)'.)
-endif
-PRODUCT_COPY_FILES := $(subst $(_vendor_path_placeholder),$(TARGET_COPY_OUT_VENDOR),$(PRODUCT_COPY_FILES))
-
-BOARD_USES_VENDORIMAGE :=
-ifdef BOARD_PREBUILT_VENDORIMAGE
-  BOARD_USES_VENDORIMAGE := true
-endif
-ifdef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
-  BOARD_USES_VENDORIMAGE := true
-endif
-ifeq ($(TARGET_COPY_OUT_VENDOR),vendor)
-  BOARD_USES_VENDORIMAGE := true
-else ifdef BOARD_USES_VENDORIMAGE
-  $(error TARGET_COPY_OUT_VENDOR must be set to 'vendor' to use a vendor image)
-endif
-.KATI_READONLY := BOARD_USES_VENDORIMAGE
-
-BUILDING_VENDOR_IMAGE :=
-ifeq ($(PRODUCT_BUILD_VENDOR_IMAGE),)
-  ifdef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
-    BUILDING_VENDOR_IMAGE := true
-  endif
-else ifeq ($(PRODUCT_BUILD_VENDOR_IMAGE),true)
-  BUILDING_VENDOR_IMAGE := true
-  ifndef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
-    $(error PRODUCT_BUILD_VENDOR_IMAGE set to true, but BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE not defined)
-  endif
-endif
-ifdef BOARD_PREBUILT_VENDORIMAGE
-  BUILDING_VENDOR_IMAGE :=
-endif
-.KATI_READONLY := BUILDING_VENDOR_IMAGE
-
-###########################################
-# Now we can substitute with the real value of TARGET_COPY_OUT_PRODUCT
-ifeq ($(TARGET_COPY_OUT_PRODUCT),$(_product_path_placeholder))
-TARGET_COPY_OUT_PRODUCT := system/product
-else ifeq ($(filter product system/product,$(TARGET_COPY_OUT_PRODUCT)),)
-$(error TARGET_COPY_OUT_PRODUCT must be either 'product' or 'system/product', seeing '$(TARGET_COPY_OUT_PRODUCT)'.)
-endif
-PRODUCT_COPY_FILES := $(subst $(_product_path_placeholder),$(TARGET_COPY_OUT_PRODUCT),$(PRODUCT_COPY_FILES))
-
-BOARD_USES_PRODUCTIMAGE :=
-ifdef BOARD_PREBUILT_PRODUCTIMAGE
-  BOARD_USES_PRODUCTIMAGE := true
-endif
-ifdef BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE
-  BOARD_USES_PRODUCTIMAGE := true
-endif
-ifeq ($(TARGET_COPY_OUT_PRODUCT),product)
-  BOARD_USES_PRODUCTIMAGE := true
-else ifdef BOARD_USES_PRODUCTIMAGE
-  $(error TARGET_COPY_OUT_PRODUCT must be set to 'product' to use a product image)
-endif
-.KATI_READONLY := BOARD_USES_PRODUCTIMAGE
-
-BUILDING_PRODUCT_IMAGE :=
-ifeq ($(PRODUCT_BUILD_PRODUCT_IMAGE),)
-  ifdef BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE
-    BUILDING_PRODUCT_IMAGE := true
-  endif
-else ifeq ($(PRODUCT_BUILD_PRODUCT_IMAGE),true)
-  BUILDING_PRODUCT_IMAGE := true
-  ifndef BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE
-    $(error PRODUCT_BUILD_PRODUCT_IMAGE set to true, but BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE not defined)
-  endif
-endif
-ifdef BOARD_PREBUILT_PRODUCTIMAGE
-  BUILDING_PRODUCT_IMAGE :=
-endif
-.KATI_READONLY := BUILDING_PRODUCT_IMAGE
-
-###########################################
-# Now we can substitute with the real value of TARGET_COPY_OUT_PRODUCT_SERVICES
-MERGE_PRODUCT_SERVICES_INTO_PRODUCT :=
-ifeq ($(TARGET_COPY_OUT_PRODUCT_SERVICES),$(_product_services_path_placeholder))
-  TARGET_COPY_OUT_PRODUCT_SERVICES := $(TARGET_COPY_OUT_PRODUCT)
-  MERGE_PRODUCT_SERVICES_INTO_PRODUCT := true
-else ifeq ($(TARGET_COPY_OUT_PRODUCT),$(TARGET_COPY_OUT_PRODUCT_SERVICES))
-  MERGE_PRODUCT_SERVICES_INTO_PRODUCT := true
-else ifeq ($(filter product_services system/product_services,$(TARGET_COPY_OUT_PRODUCT_SERVICES)),)
-  $(error TARGET_COPY_OUT_PRODUCT_SERVICES must be either 'product_services',\
-    '$(TARGET_COPY_OUT_PRODUCT)' or 'system/product_services', seeing '$(TARGET_COPY_OUT_PRODUCT_SERVICES)'.)
-endif
-.KATI_READONLY := MERGE_PRODUCT_SERVICES_INTO_PRODUCT
-PRODUCT_COPY_FILES := $(subst $(_product_services_path_placeholder),$(TARGET_COPY_OUT_PRODUCT_SERVICES),$(PRODUCT_COPY_FILES))
-
-BOARD_USES_PRODUCT_SERVICESIMAGE :=
-ifdef BOARD_PREBUILT_PRODUCT_SERVICESIMAGE
-  BOARD_USES_PRODUCT_SERVICESIMAGE := true
-endif
-ifdef BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE
-  BOARD_USES_PRODUCT_SERVICESIMAGE := true
-endif
-ifeq ($(TARGET_COPY_OUT_PRODUCT_SERVICES),product_services)
-  BOARD_USES_PRODUCT_SERVICESIMAGE := true
-else ifdef BOARD_USES_PRODUCT_SERVICESIMAGE
-  $(error TARGET_COPY_OUT_PRODUCT_SERVICES must be set to 'product_services' to use a product_services image)
-endif
-
-BUILDING_PRODUCT_SERVICES_IMAGE :=
-ifeq ($(PRODUCT_BUILD_PRODUCT_SERVICES_IMAGE),)
-  ifdef BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE
-    BUILDING_PRODUCT_SERVICES_IMAGE := true
-  endif
-else ifeq ($(PRODUCT_BUILD_PRODUCT_SERVICES_IMAGE),true)
-  BUILDING_PRODUCT_SERVICES_IMAGE := true
-  ifndef BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE
-    $(error PRODUCT_BUILD_PRODUCT_SERVICES_IMAGE set to true, but BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE not defined)
-  endif
-endif
-ifdef BOARD_PREBUILT_PRODUCT_SERVICESIMAGE
-  BUILDING_PRODUCT_SERVICES_IMAGE :=
-endif
-.KATI_READONLY := BUILDING_PRODUCT_SERVICES_IMAGE
-
-###########################################
-# Now we can substitute with the real value of TARGET_COPY_OUT_ODM
-ifeq ($(TARGET_COPY_OUT_ODM),$(_odm_path_placeholder))
-  TARGET_COPY_OUT_ODM := vendor/odm
-else ifeq ($(filter odm vendor/odm,$(TARGET_COPY_OUT_ODM)),)
-  $(error TARGET_COPY_OUT_ODM must be either 'odm' or 'vendor/odm', seeing '$(TARGET_COPY_OUT_ODM)'.)
-endif
-PRODUCT_COPY_FILES := $(subst $(_odm_path_placeholder),$(TARGET_COPY_OUT_ODM),$(PRODUCT_COPY_FILES))
-
-BOARD_USES_ODMIMAGE :=
-ifdef BOARD_PREBUILT_ODMIMAGE
-  BOARD_USES_ODMIMAGE := true
-endif
-ifdef BOARD_ODMIMAGE_FILE_SYSTEM_TYPE
-  BOARD_USES_ODMIMAGE := true
-endif
-ifeq ($(TARGET_COPY_OUT_ODM),odm)
-  BOARD_USES_ODMIMAGE := true
-else ifdef BOARD_USES_ODMIMAGE
-  $(error TARGET_COPY_OUT_ODM must be set to 'odm' to use an odm image)
-endif
-
-BUILDING_ODM_IMAGE :=
-ifeq ($(ODM_BUILD_ODM_IMAGE),)
-  ifdef BOARD_ODMIMAGE_FILE_SYSTEM_TYPE
-    BUILDING_ODM_IMAGE := true
-  endif
-else ifeq ($(PRODUCT_BUILD_ODM_IMAGE),true)
-  BUILDING_ODM_IMAGE := true
-  ifndef BOARD_ODMIMAGE_FILE_SYSTEM_TYPE
-    $(error PRODUCT_BUILD_ODM_IMAGE set to true, but BOARD_ODMIMAGE_FILE_SYSTEM_TYPE not defined)
-  endif
-endif
-ifdef BOARD_PREBUILT_ODMIMAGE
-  BUILDING_ODM_IMAGE :=
-endif
-.KATI_READONLY := BUILDING_ODM_IMAGE
-
-###########################################
-# Ensure that only TARGET_RECOVERY_UPDATER_LIBS *or* AB_OTA_UPDATER is set.
-TARGET_RECOVERY_UPDATER_LIBS ?=
-AB_OTA_UPDATER ?=
-.KATI_READONLY := TARGET_RECOVERY_UPDATER_LIBS AB_OTA_UPDATER
-ifeq ($(AB_OTA_UPDATER),true)
-  ifneq ($(strip $(TARGET_RECOVERY_UPDATER_LIBS)),)
-    $(error Do not use TARGET_RECOVERY_UPDATER_LIBS when using AB_OTA_UPDATER)
-  endif
-endif
-
-# Check BOARD_VNDK_VERSION
-define check_vndk_version
-  $(eval vndk_path := prebuilts/vndk/v$(1)) \
-  $(if $(wildcard $(vndk_path)/*/Android.bp),,$(error VNDK version $(1) not found))
-endef
-
-ifdef BOARD_VNDK_VERSION
-  ifneq ($(BOARD_VNDK_VERSION),current)
-    $(error BOARD_VNDK_VERSION: Only "current" is implemented)
-  endif
-
-  TARGET_VENDOR_TEST_SUFFIX := /vendor
-else
-  TARGET_VENDOR_TEST_SUFFIX :=
-endif
-
-ifeq (,$(TARGET_BUILD_APPS))
-ifdef PRODUCT_EXTRA_VNDK_VERSIONS
-  $(foreach v,$(PRODUCT_EXTRA_VNDK_VERSIONS),$(call check_vndk_version,$(v)))
-endif
-endif
-
-# Ensure that BOARD_SYSTEMSDK_VERSIONS are all within PLATFORM_SYSTEMSDK_VERSIONS
-_unsupported_systemsdk_versions := $(filter-out $(PLATFORM_SYSTEMSDK_VERSIONS),$(BOARD_SYSTEMSDK_VERSIONS))
-ifneq (,$(_unsupported_systemsdk_versions))
-  $(error System SDK versions '$(_unsupported_systemsdk_versions)' in BOARD_SYSTEMSDK_VERSIONS are not supported.\
-          Supported versions are $(PLATFORM_SYSTEMSDK_VERSIONS))
-endif
-
-# ---------------------------------------------------------------
-# Set up configuration for target machine.
-# The following must be set:
-# 		TARGET_OS = { linux }
-# 		TARGET_ARCH = { arm | x86 | mips }
-
 TARGET_OS := linux
-# TARGET_ARCH should be set by BoardConfig.mk and will be checked later
-ifneq ($(filter %64,$(TARGET_ARCH)),)
-TARGET_IS_64_BIT := true
-endif
+
+include $(BUILD_SYSTEM)/board_config.mk
 
 # the target build type defaults to release
 ifneq ($(TARGET_BUILD_TYPE),debug)
@@ -678,8 +380,6 @@
 .KATI_READONLY := HOST_OUT_TEST_CONFIG
 
 # Out for HOST_2ND_ARCH
-HOST_2ND_ARCH_VAR_PREFIX := 2ND_
-HOST_2ND_ARCH_MODULE_SUFFIX := _32
 $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATES := $(HOST_OUT)/obj32
 $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_SHARED_LIBRARIES := $(HOST_OUT)/lib
 $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_EXECUTABLES := $(HOST_OUT_EXECUTABLES)
@@ -687,8 +387,6 @@
 $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_NATIVE_TESTS := $(HOST_OUT)/nativetest
 $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_TESTCASES := $(HOST_OUT_TESTCASES)
 .KATI_READONLY := \
-  HOST_2ND_ARCH_VAR_PREFIX \
-  HOST_2ND_ARCH_MODULE_SUFFIX \
   $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_INTERMEDIATES \
   $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_SHARED_LIBRARIES \
   $(HOST_2ND_ARCH_VAR_PREFIX)HOST_OUT_EXECUTABLES \
@@ -702,15 +400,11 @@
 .KATI_READONLY := HOST_LIBRARY_PATH
 
 # Out for HOST_CROSS_2ND_ARCH
-HOST_CROSS_2ND_ARCH_VAR_PREFIX := 2ND_
-HOST_CROSS_2ND_ARCH_MODULE_SUFFIX := _64
 $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_INTERMEDIATES := $(HOST_CROSS_OUT)/obj64
 $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_SHARED_LIBRARIES := $(HOST_CROSS_OUT)/lib64
 $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_EXECUTABLES := $(HOST_CROSS_OUT_EXECUTABLES)
 $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_NATIVE_TESTS := $(HOST_CROSS_OUT)/nativetest64
 .KATI_READONLY := \
-  HOST_CROSS_2ND_ARCH_VAR_PREFIX \
-  HOST_CROSS_2ND_ARCH_MODULE_SUFFIX \
   $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_INTERMEDIATES \
   $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_SHARED_LIBRARIES \
   $(HOST_CROSS_2ND_ARCH_VAR_PREFIX)HOST_CROSS_OUT_EXECUTABLES \
@@ -797,14 +491,13 @@
 .KATI_READONLY := TARGET_OUT_SYSTEM_OTHER
 
 # Out for TARGET_2ND_ARCH
-TARGET_2ND_ARCH_VAR_PREFIX := $(HOST_2ND_ARCH_VAR_PREFIX)
 ifeq ($(TARGET_TRANSLATE_2ND_ARCH),true)
 # With this you can reference the arm binary translation library with libfoo_arm in PRODUCT_PACKAGES.
 TARGET_2ND_ARCH_MODULE_SUFFIX := _$(TARGET_2ND_ARCH)
 else
 TARGET_2ND_ARCH_MODULE_SUFFIX := $(HOST_2ND_ARCH_MODULE_SUFFIX)
 endif
-.KATI_READONLY := TARGET_2ND_ARCH_VAR_PREFIX TARGET_2ND_ARCH_MODULE_SUFFIX
+.KATI_READONLY := TARGET_2ND_ARCH_MODULE_SUFFIX
 
 ifneq ($(filter address,$(SANITIZE_TARGET)),)
   $(TARGET_2ND_ARCH_VAR_PREFIX)TARGET_OUT_INTERMEDIATES := $(PRODUCT_OUT)/obj_$(TARGET_2ND_ARCH)_asan
diff --git a/core/main.mk b/core/main.mk
index 610ab28..8b43867 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -252,6 +252,11 @@
 ADDITIONAL_PRODUCT_PROPERTIES += ro.boot.dynamic_partitions_retrofit=true
 endif
 
+# Add the system server compiler filter if they are specified for the product.
+ifneq (,$(PRODUCT_SYSTEM_SERVER_COMPILER_FILTER))
+ADDITIONAL_PRODUCT_PROPERTIES += dalvik.vm.systemservercompilerfilter=$(PRODUCT_SYSTEM_SERVER_COMPILER_FILTER)
+endif
+
 # -----------------------------------------------------------------
 ###
 ### In this section we set up the things that are different
@@ -264,26 +269,6 @@
 is_sdk_build := true
 endif
 
-# Add build properties for ART. These define system properties used by installd
-# to pass flags to dex2oat.
-ADDITIONAL_BUILD_PROPERTIES += persist.sys.dalvik.vm.lib.2=libart.so
-ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.isa.$(TARGET_ARCH).variant=$(DEX2OAT_TARGET_CPU_VARIANT)
-ifneq ($(DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES),)
-  ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.isa.$(TARGET_ARCH).features=$(DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES)
-endif
-
-ifdef TARGET_2ND_ARCH
-  ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.isa.$(TARGET_2ND_ARCH).variant=$($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_CPU_VARIANT)
-  ifneq ($($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES),)
-    ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.isa.$(TARGET_2ND_ARCH).features=$($(TARGET_2ND_ARCH_VAR_PREFIX)DEX2OAT_TARGET_INSTRUCTION_SET_FEATURES)
-  endif
-endif
-
-# Add the system server compiler filter if they are specified for the product.
-ifneq (,$(PRODUCT_SYSTEM_SERVER_COMPILER_FILTER))
-ADDITIONAL_BUILD_PROPERTIES += dalvik.vm.systemservercompilerfilter=$(PRODUCT_SYSTEM_SERVER_COMPILER_FILTER)
-endif
-
 ## user/userdebug ##
 
 user_variant := $(filter user userdebug,$(TARGET_BUILD_VARIANT))
@@ -1046,6 +1031,8 @@
 define auto-included-modules
   $(if $(BOARD_VNDK_VERSION),vndk_package) \
   $(if $(DEVICE_MANIFEST_FILE),device_manifest.xml) \
+  $(if $(ODM_MANIFEST_FILES),odm_manifest.xml) \
+  $(if $(ODM_MANIFEST_SKUS),$(foreach sku, $(ODM_MANIFEST_SKUS),odm_manifest_$(sku).xml)) \
 
 endef
 
@@ -1454,6 +1441,7 @@
   $(call dist-for-goals, droidcore, \
     $(INTERNAL_UPDATE_PACKAGE_TARGET) \
     $(INTERNAL_OTA_PACKAGE_TARGET) \
+    $(INTERNAL_OTA_METADATA) \
     $(INTERNAL_OTA_RETROFIT_DYNAMIC_PARTITIONS_PACKAGE_TARGET) \
     $(BUILT_OTATOOLS_PACKAGE) \
     $(SYMBOLS_ZIP) \
@@ -1581,8 +1569,15 @@
 .PHONY: findbugs
 findbugs: $(INTERNAL_FINDBUGS_HTML_TARGET) $(INTERNAL_FINDBUGS_XML_TARGET)
 
+LSDUMP_PATHS_FILE := $(PRODUCT_OUT)/lsdump_paths.txt
+
 .PHONY: findlsdumps
-findlsdumps: $(FIND_LSDUMPS_FILE)
+findlsdumps: $(LSDUMP_PATHS_FILE) $(LSDUMP_PATHS)
+
+$(LSDUMP_PATHS_FILE): PRIVATE_LSDUMP_PATHS := $(LSDUMP_PATHS)
+$(LSDUMP_PATHS_FILE):
+	@echo "Generate $@"
+	@rm -rf $@ && echo "$(PRIVATE_LSDUMP_PATHS)" | sed -e 's/ /\n/g' > $@
 
 .PHONY: check-elf-files
 check-elf-files:
diff --git a/core/native_test_config_template.xml b/core/native_test_config_template.xml
index a88d57c..f3d3231 100644
--- a/core/native_test_config_template.xml
+++ b/core/native_test_config_template.xml
@@ -17,6 +17,9 @@
 <configuration description="Runs {MODULE}.">
     <option name="test-suite-tag" value="apct" />
     <option name="test-suite-tag" value="apct-native" />
+
+    {EXTRA_OPTIONS}
+
     <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
         <option name="cleanup" value="true" />
         <option name="push" value="{MODULE}->/data/local/tmp/{MODULE}" />
diff --git a/core/pdk_config.mk b/core/pdk_config.mk
index 383c11a..ce78ece 100644
--- a/core/pdk_config.mk
+++ b/core/pdk_config.mk
@@ -20,8 +20,6 @@
   target/common/obj/JAVA_LIBRARIES/conscrypt_intermediates \
   target/common/obj/JAVA_LIBRARIES/core-oj_intermediates \
   target/common/obj/JAVA_LIBRARIES/core-libart_intermediates \
-  target/common/obj/JAVA_LIBRARIES/legacy-test_intermediates \
-  target/common/obj/JAVA_LIBRARIES/legacy-android-test_intermediates \
   target/common/obj/JAVA_LIBRARIES/ext_intermediates \
   target/common/obj/JAVA_LIBRARIES/framework_intermediates \
   target/common/obj/JAVA_LIBRARIES/hwbinder_intermediates \
diff --git a/core/product.mk b/core/product.mk
index 2ddbeaf..fba2ed3 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -366,82 +366,18 @@
 $(strip $(call _resolve-short-product-name,$(1)))
 endef
 
-
-_product_stash_var_list := $(_product_var_list) \
-	PRODUCT_BOOTCLASSPATH \
-	PRODUCT_SYSTEM_SERVER_CLASSPATH \
-	TARGET_ARCH \
-	TARGET_ARCH_VARIANT \
-	TARGET_CPU_VARIANT \
-	TARGET_BOARD_PLATFORM \
-	TARGET_BOARD_PLATFORM_GPU \
-	TARGET_BOARD_KERNEL_HEADERS \
-	TARGET_DEVICE_KERNEL_HEADERS \
-	TARGET_PRODUCT_KERNEL_HEADERS \
-	TARGET_BOOTLOADER_BOARD_NAME \
-	TARGET_NO_BOOTLOADER \
-	TARGET_NO_KERNEL \
-	TARGET_NO_RECOVERY \
-	TARGET_NO_RADIOIMAGE \
-	TARGET_HARDWARE_3D \
-	TARGET_CPU_ABI \
-	TARGET_CPU_ABI2 \
-
-
-_product_stash_var_list += \
-	BOARD_WPA_SUPPLICANT_DRIVER \
-	BOARD_WLAN_DEVICE \
-	BOARD_USES_GENERIC_AUDIO \
-	BOARD_KERNEL_CMDLINE \
-	BOARD_KERNEL_BASE \
-	BOARD_HAVE_BLUETOOTH \
-	BOARD_VENDOR_USE_AKMD \
-	BOARD_EGL_CFG \
-	BOARD_BOOTIMAGE_PARTITION_SIZE \
-	BOARD_RECOVERYIMAGE_PARTITION_SIZE \
-	BOARD_SYSTEMIMAGE_PARTITION_SIZE \
-	BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE \
-	BOARD_USERDATAIMAGE_FILE_SYSTEM_TYPE \
-	BOARD_USERDATAIMAGE_PARTITION_SIZE \
-	BOARD_CACHEIMAGE_FILE_SYSTEM_TYPE \
-	BOARD_CACHEIMAGE_PARTITION_SIZE \
-	BOARD_FLASH_BLOCK_SIZE \
-	BOARD_VENDORIMAGE_PARTITION_SIZE \
-	BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE \
-	BOARD_PRODUCTIMAGE_PARTITION_SIZE \
-	BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE \
-	BOARD_PRODUCT_SERVICESIMAGE_PARTITION_SIZE \
-	BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE \
-	BOARD_ODMIMAGE_PARTITION_SIZE \
-	BOARD_ODMIMAGE_FILE_SYSTEM_TYPE \
-	BOARD_INSTALLER_CMDLINE \
-
-
-_product_stash_var_list += \
-	DEFAULT_SYSTEM_DEV_CERTIFICATE \
-	WITH_DEXPREOPT \
-	WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY
-
-# Logical partitions related variables.
-_dynamic_partitions_var_list += \
-	BOARD_SYSTEMIMAGE_PARTITION_RESERVED_SIZE \
-	BOARD_VENDORIMAGE_PARTITION_RESERVED_SIZE \
-	BOARD_ODMIMAGE_PARTITION_RESERVED_SIZE \
-	BOARD_PRODUCTIMAGE_PARTITION_RESERVED_SIZE \
-	BOARD_PRODUCT_SERVICESIMAGE_PARTITION_RESERVED_SIZE \
-	BOARD_SUPER_PARTITION_SIZE \
-	BOARD_SUPER_PARTITION_GROUPS \
-
-_product_stash_var_list += $(_dynamic_partitions_var_list)
-_product_strip_var_list := $(_dynamic_partitions_var_list)
+_product_stash_var_list := $(_product_var_list)
+# TODO: Move this to board_config.mk when no longer set in product makefiles
+_product_stash_var_list += WITH_DEXPREOPT_BOOT_IMG_AND_SYSTEM_SERVER_ONLY
+_product_strip_var_list :=
 
 #
 # Mark the variables in _product_stash_var_list as readonly
 #
 define readonly-product-vars
 $(foreach v,$(_product_stash_var_list), \
-	$(eval $(v) ?=) \
-	$(eval .KATI_READONLY := $(v)) \
+  $(eval $(v) ?=) \
+  $(eval .KATI_READONLY := $(v)) \
  )
 endef
 
diff --git a/core/soong_config.mk b/core/soong_config.mk
index 1fb0c29..3c82e88 100644
--- a/core/soong_config.mk
+++ b/core/soong_config.mk
@@ -114,11 +114,6 @@
 $(call add_json_list, ModulesLoadedByPrivilegedModules,  $(PRODUCT_LOADED_BY_PRIVILEGED_MODULES))
 
 $(call add_json_list, BootJars,                          $(PRODUCT_BOOT_JARS))
-$(call add_json_list, PreoptBootJars,                    $(DEXPREOPT_BOOT_JARS_MODULES))
-
-$(call add_json_bool, DisableDexPreopt,                  $(call invert_bool,$(filter true,$(WITH_DEXPREOPT))))
-$(call add_json_list, DisableDexPreoptModules,           $(DEXPREOPT_DISABLED_MODULES))
-$(call add_json_str,  DexPreoptProfileDir,               $(PRODUCT_DEX_PREOPT_PROFILE_DIR))
 
 $(call add_json_bool, Product_is_iot,                    $(filter true,$(PRODUCT_IOT)))
 
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index a3cd3ac..835d9fe 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -252,7 +252,7 @@
     #  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 := 2019-01-05
+      PLATFORM_SECURITY_PATCH := 2019-02-05
 endif
 .KATI_READONLY := PLATFORM_SECURITY_PATCH
 
diff --git a/envsetup.sh b/envsetup.sh
index 0953487..9e381a2 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -267,6 +267,13 @@
         export ANDROID_EMULATOR_PREBUILTS
     fi
 
+    # Append asuite prebuilts path to ANDROID_BUILD_PATHS.
+    local os_arch=$(get_build_var HOST_PREBUILT_TAG)
+    local ACLOUD_PATH="$T/prebuilts/asuite/acloud/$os_arch:"
+    local AIDEGEN_PATH="$T/prebuilts/asuite/aidegen/$os_arch:"
+    local ATEST_PATH="$T/prebuilts/asuite/atest/$os_arch:"
+    export ANDROID_BUILD_PATHS=$ANDROID_BUILD_PATHS$ACLOUD_PATH$AIDEGEN_PATH$ATEST_PATH
+
     export PATH=$ANDROID_BUILD_PATHS$PATH
 
     # out with the duplicate old
@@ -355,7 +362,7 @@
     local completion_files=(
       system/core/adb/adb.bash
       system/core/fastboot/fastboot.bash
-      tools/tradefederation/core/atest/atest_completion.sh
+      tools/asuite/asuite.sh
     )
     # Completion can be disabled selectively to allow users to use non-standard completion.
     # e.g.
@@ -1689,23 +1696,6 @@
     "$ANDROID_PRODUCT_OUT/provision-device" "$@"
 }
 
-function atest()
-{
-    # Let's use the built version over the prebuilt, then source code.
-    local os_arch=$(get_build_var HOST_PREBUILT_TAG)
-    local built_atest=${ANDROID_HOST_OUT}/bin/atest
-    local prebuilt_atest="$(gettop)"/prebuilts/asuite/atest/$os_arch/atest
-    if [[ -x $built_atest ]]; then
-        $built_atest "$@"
-    elif [[ -x $prebuilt_atest ]]; then
-        $prebuilt_atest "$@"
-    else
-        # TODO: once prebuilt atest released, remove the source code section
-        # and change the location of atest_completion.sh in addcompletions().
-        "$(gettop)"/tools/tradefederation/core/atest/atest.py "$@"
-    fi
-}
-
 # Zsh needs bashcompinit called to support bash-style completion.
 function enable_zsh_completion() {
     # Don't override user's options if bash-style completion is already enabled.
@@ -1730,40 +1720,6 @@
     esac
 }
 
-function acloud()
-{
-    # Let's use the built version over the prebuilt.
-    local built_acloud=${ANDROID_HOST_OUT}/bin/acloud
-    if [ -f $built_acloud ]; then
-        $built_acloud "$@"
-        return $?
-    fi
-
-    local host_os_arch=$(get_build_var HOST_PREBUILT_TAG)
-    case $host_os_arch in
-        linux-x86) "$(gettop)"/prebuilts/asuite/acloud/linux-x86/acloud "$@"
-        ;;
-        darwin-x86) "$(gettop)"/prebuilts/asuite/acloud/darwin-x86/acloud "$@"
-        ;;
-    *)
-        echo "acloud is not supported on your host arch: $host_os_arch"
-        ;;
-    esac
-}
-
-function aidegen()
-{
-    # Always use the prebuilt version.
-    local host_os_arch=$(get_build_var HOST_PREBUILT_TAG)
-    case $host_os_arch in
-        linux-x86) "$(gettop)"/prebuilts/asuite/aidegen/linux-x86/aidegen "$@"
-        ;;
-    *)
-        echo "aidegen is not supported on your host arch: $host_os_arch"
-        ;;
-    esac
-}
-
 # Execute the contents of any vendorsetup.sh files we can find.
 # Unless we find an allowed-vendorsetup_sh-files file, in which case we'll only
 # load those.
diff --git a/target/board/Android.mk b/target/board/Android.mk
index 7fe45eb..971a7b2 100644
--- a/target/board/Android.mk
+++ b/target/board/Android.mk
@@ -52,3 +52,59 @@
 include $(BUILD_PREBUILT)
 BUILT_VENDOR_MANIFEST := $(LOCAL_BUILT_MODULE)
 endif
+
+# ODM manifest
+ifdef ODM_MANIFEST_FILES
+# ODM_MANIFEST_FILES is a list of files that is combined and installed as the default ODM manifest.
+include $(CLEAR_VARS)
+LOCAL_MODULE := odm_manifest.xml
+LOCAL_MODULE_STEM := manifest.xml
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_RELATIVE_PATH := vintf
+LOCAL_ODM_MODULE := true
+
+GEN := $(local-generated-sources-dir)/manifest.xml
+$(GEN): PRIVATE_SRC_FILES := $(ODM_MANIFEST_FILES)
+$(GEN): $(ODM_MANIFEST_FILES) $(HOST_OUT_EXECUTABLES)/assemble_vintf
+	# Set VINTF_IGNORE_TARGET_FCM_VERSION to true because it should only be in device manifest.
+	VINTF_IGNORE_TARGET_FCM_VERSION=true \
+	$(HOST_OUT_EXECUTABLES)/assemble_vintf -o $@ \
+		-i $(call normalize-path-list,$(PRIVATE_SRC_FILES))
+
+LOCAL_PREBUILT_MODULE_FILE := $(GEN)
+include $(BUILD_PREBUILT)
+endif # ODM_MANIFEST_FILES
+
+# ODM_MANIFEST_SKUS: a list of SKUS where ODM_MANIFEST_<sku>_FILES are defined.
+ifdef ODM_MANIFEST_SKUS
+
+# Install /odm/etc/vintf/manifest_$(sku).xml
+# $(1): sku
+define _add_odm_sku_manifest
+my_fragment_files_var := ODM_MANIFEST_$$(call to-upper,$(1))_FILES
+ifndef $$(my_fragment_files_var)
+$$(error $(1) is in ODM_MANIFEST_SKUS but $$(my_fragment_files_var) is not defined)
+endif
+my_fragment_files := $$($$(my_fragment_files_var))
+include $$(CLEAR_VARS)
+LOCAL_MODULE := odm_manifest_$(1).xml
+LOCAL_MODULE_STEM := manifest_$(1).xml
+LOCAL_MODULE_CLASS := ETC
+LOCAL_MODULE_RELATIVE_PATH := vintf
+LOCAL_ODM_MODULE := true
+GEN := $$(local-generated-sources-dir)/manifest_$(1).xml
+$$(GEN): PRIVATE_SRC_FILES := $$(my_fragment_files)
+$$(GEN): $$(my_fragment_files) $$(HOST_OUT_EXECUTABLES)/assemble_vintf
+	VINTF_IGNORE_TARGET_FCM_VERSION=true \
+	$$(HOST_OUT_EXECUTABLES)/assemble_vintf -o $$@ \
+		-i $$(call normalize-path-list,$$(PRIVATE_SRC_FILES))
+LOCAL_PREBUILT_MODULE_FILE := $$(GEN)
+include $$(BUILD_PREBUILT)
+my_fragment_files_var :=
+my_fragment_files :=
+endef
+
+$(foreach sku, $(ODM_MANIFEST_SKUS), $(eval $(call _add_odm_sku_manifest,$(sku))))
+_add_odm_sku_manifest :=
+
+endif # ODM_MANIFEST_SKUS
diff --git a/target/board/BoardConfigEmuCommon.mk b/target/board/BoardConfigEmuCommon.mk
index 1e325b9..3e8d342 100644
--- a/target/board/BoardConfigEmuCommon.mk
+++ b/target/board/BoardConfigEmuCommon.mk
@@ -20,10 +20,10 @@
 # the GLES renderer disables itself if host GL acceleration isn't available.
 USE_OPENGL_RENDERER := true
 
-# ~100 MB vendor image. Please adjust system image / vendor image sizes
+# ~140 MB vendor image. Please adjust system image / vendor image sizes
 # when finalizing them. The partition size needs to be a multiple of image
 # block size: 4096.
-BOARD_VENDORIMAGE_PARTITION_SIZE := 100003840
+BOARD_VENDORIMAGE_PARTITION_SIZE := 140963840
 BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE := ext4
 BOARD_FLASH_BLOCK_SIZE := 512
 DEVICE_MATRIX_FILE   := device/generic/goldfish/compatibility_matrix.xml
diff --git a/target/board/BoardConfigGsiCommon.mk b/target/board/BoardConfigGsiCommon.mk
index 88bc7da..68d29c8 100644
--- a/target/board/BoardConfigGsiCommon.mk
+++ b/target/board/BoardConfigGsiCommon.mk
@@ -34,11 +34,14 @@
 
 # Android Verified Boot (AVB):
 #   Set AVB_VBMETA_IMAGE_FLAGS_VERIFICATION_DISABLED (--flags 2) in
-#   vbmeta.img to disable AVB verification.
+#   vbmeta.img to disable AVB verification. Also set the rollback index
+#   to zero, to prevent the device bootloader from updating the last seen
+#   rollback index in the tamper-evident storage.
 #
 # To disable AVB for GSI, use the vbmeta.img and the GSI together.
 # To enable AVB for GSI, include the GSI public key into the device-specific
 # vbmeta.img.
+BOARD_AVB_ROLLBACK_INDEX := 0
 BOARD_AVB_MAKE_VBMETA_IMAGE_ARGS += --flags 2
 
 # Enable chain partition for system.
diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index fe1954e..f8ff22f 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -114,6 +114,7 @@
     libandroidfw \
     libandroid_runtime \
     libandroid_servers \
+    libartpalette-system \
     libashmemd_client \
     libaudioeffect_jni \
     libaudioflinger \
diff --git a/target/product/runtime_libart.mk b/target/product/runtime_libart.mk
index c337e91..fa35d43 100644
--- a/target/product/runtime_libart.mk
+++ b/target/product/runtime_libart.mk
@@ -38,11 +38,6 @@
     libicui18n \
     libicuuc \
 
-# TODO(b/124498388): This currently needs to be in /system/lib for the debugger
-# transport to work.
-PRODUCT_PACKAGES += \
-    libnpt
-
 # Android Runtime APEX module.
 PRODUCT_PACKAGES += com.android.runtime
 
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 8a60f7d..cfa81e1 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -191,7 +191,7 @@
 
 
 def RunAndWait(args, verbose=None, **kwargs):
-  """Runs the given command and returns the exit code.
+  """Runs the given command waiting for it to complete.
 
   Args:
     args: The command represented as a list of strings.
@@ -201,12 +201,16 @@
         stdin, etc. stdout and stderr will default to subprocess.PIPE and
         subprocess.STDOUT respectively unless caller specifies any of them.
 
-  Returns:
-    The process return code.
+  Raises:
+    ExternalError: On non-zero exit from the command.
   """
   proc = Run(args, verbose=verbose, **kwargs)
   proc.wait()
-  return proc.returncode
+
+  if proc.returncode != 0:
+    raise ExternalError(
+        "Failed to run command '{}' (exit code {})".format(
+            args, proc.returncode))
 
 
 def RunAndCheckOutput(args, verbose=None, **kwargs):
@@ -764,30 +768,46 @@
     shutil.copyfileobj(in_file, out_file)
 
 
+def UnzipToDir(filename, dirname, pattern=None):
+  """Unzips the archive to the given directory.
+
+  Args:
+    filename: The name of the zip file to unzip.
+
+    dirname: Where the unziped files will land.
+
+    pattern: Files to unzip from the archive. If omitted, will unzip the entire
+    archvie.
+  """
+
+  cmd = ["unzip", "-o", "-q", filename, "-d", dirname]
+  if pattern is not None:
+    cmd.extend(pattern)
+  RunAndCheckOutput(cmd)
+
+
 def UnzipTemp(filename, pattern=None):
   """Unzips the given archive into a temporary directory and returns the name.
 
-  If filename is of the form "foo.zip+bar.zip", unzip foo.zip into a temp dir,
-  then unzip bar.zip into that_dir/BOOTABLE_IMAGES.
+  Args:
+    filename: If filename is of the form "foo.zip+bar.zip", unzip foo.zip into
+    a temp dir, then unzip bar.zip into that_dir/BOOTABLE_IMAGES.
+
+    pattern: Files to unzip from the archive. If omitted, will unzip the entire
+    archvie.
 
   Returns:
     The name of the temporary directory.
   """
 
-  def unzip_to_dir(filename, dirname):
-    cmd = ["unzip", "-o", "-q", filename, "-d", dirname]
-    if pattern is not None:
-      cmd.extend(pattern)
-    RunAndCheckOutput(cmd)
-
   tmp = MakeTempDir(prefix="targetfiles-")
   m = re.match(r"^(.*[.]zip)\+(.*[.]zip)$", filename, re.IGNORECASE)
   if m:
-    unzip_to_dir(m.group(1), tmp)
-    unzip_to_dir(m.group(2), os.path.join(tmp, "BOOTABLE_IMAGES"))
+    UnzipToDir(m.group(1), tmp, pattern)
+    UnzipToDir(m.group(2), os.path.join(tmp, "BOOTABLE_IMAGES"), pattern)
     filename = m.group(1)
   else:
-    unzip_to_dir(filename, tmp)
+    UnzipToDir(filename, tmp, pattern)
 
   return tmp
 
diff --git a/tools/releasetools/merge_target_files.py b/tools/releasetools/merge_target_files.py
index b02363c..2645829 100755
--- a/tools/releasetools/merge_target_files.py
+++ b/tools/releasetools/merge_target_files.py
@@ -35,7 +35,6 @@
 
 from __future__ import print_function
 
-import argparse
 import fnmatch
 import logging
 import os
@@ -48,6 +47,10 @@
 logger = logging.getLogger(__name__)
 OPTIONS = common.OPTIONS
 OPTIONS.verbose = True
+OPTIONS.system_target_files = None
+OPTIONS.other_target_files = None
+OPTIONS.output_target_files = None
+OPTIONS.keep_tmp = False
 
 # system_extract_as_is_item_list is a list of items to extract from the partial
 # system target files package as is, meaning these items will land in the
@@ -139,9 +142,6 @@
     will land.
 
     extract_item_list: A list of items to extract.
-
-  Returns:
-    On success, 0. Otherwise, a non-zero exit code from unzip.
   """
 
   logger.info('extracting from %s', target_files)
@@ -163,25 +163,13 @@
     else:
       filtered_extract_item_list.append(pattern)
 
-  # Extract the filtered_extract_item_list from target_files into
-  # target_files_temp_dir.
+  # Extract from target_files into target_files_temp_dir the
+  # filtered_extract_item_list.
 
-  # TODO(b/124464492): Extend common.UnzipTemp() to handle this use case.
-  command = [
-      'unzip',
-      '-n',
-      '-q',
-      '-d', target_files_temp_dir,
-      target_files
-  ] + filtered_extract_item_list
-
-  result = common.RunAndWait(command, verbose=True)
-
-  if result != 0:
-    logger.error('extract_items command %s failed %d', str(command), result)
-    return result
-
-  return 0
+  common.UnzipToDir(
+      target_files,
+      target_files_temp_dir,
+      filtered_extract_item_list)
 
 
 def process_ab_partitions_txt(
@@ -302,9 +290,6 @@
     already contain plat_file_contexts and vendor_file_contexts (in the
     appropriate sub directories), and to which META/file_contexts.bin will be
     written.
-
-  Returns:
-    On success, 0. Otherwise, a non-zero exit code.
   """
 
   # To create a merged file_contexts.bin file, we use the system and vendor
@@ -349,12 +334,7 @@
 
   sorted_file_contexts_txt = os.path.join(temp_dir, 'sorted_file_contexts.txt')
   command = ['fc_sort', merged_file_contexts_txt, sorted_file_contexts_txt]
-
-  # TODO(b/124521133): Refector RunAndWait to raise exception on failure.
-  result = common.RunAndWait(command, verbose=True)
-
-  if result != 0:
-    return result
+  common.RunAndWait(command, verbose=True)
 
   # Finally, the compile step creates the final META/file_contexts.bin.
 
@@ -368,12 +348,7 @@
       sorted_file_contexts_txt,
   ]
 
-  result = common.RunAndWait(command, verbose=True)
-
-  if result != 0:
-    return result
-
-  return 0
+  common.RunAndWait(command, verbose=True)
 
 
 def process_special_cases(
@@ -399,9 +374,6 @@
     output_target_files_temp_dir: The name of a directory that will be used
     to create the output target files package after all the special cases
     are processed.
-
-  Returns:
-    On success, 0. Otherwise, a non-zero exit code.
   """
 
   process_ab_partitions_txt(
@@ -414,15 +386,10 @@
       other_target_files_temp_dir=other_target_files_temp_dir,
       output_target_files_temp_dir=output_target_files_temp_dir)
 
-  result = process_file_contexts_bin(
+  process_file_contexts_bin(
       temp_dir=temp_dir,
       output_target_files_temp_dir=output_target_files_temp_dir)
 
-  if result != 0:
-    return result
-
-  return 0
-
 
 def merge_target_files(
     temp_dir,
@@ -448,9 +415,6 @@
 
     output_target_files: The name of the output zip archive target files
     package created by merging system and other.
-
-  Returns:
-    On success, 0. Otherwise, a non-zero exit code.
   """
 
   # Create directory names that we'll use when we extract files from system,
@@ -464,64 +428,49 @@
   # We extract them directly into the output temporary directory since the
   # items do not need special case processing.
 
-  result = extract_items(
+  extract_items(
       target_files=system_target_files,
       target_files_temp_dir=output_target_files_temp_dir,
       extract_item_list=system_extract_as_is_item_list)
 
-  if result != 0:
-    return result
-
   # Extract "as is" items from the input other partial target files package. We
   # extract them directly into the output temporary directory since the items
   # do not need special case processing.
 
-  result = extract_items(
+  extract_items(
       target_files=other_target_files,
       target_files_temp_dir=output_target_files_temp_dir,
       extract_item_list=other_extract_as_is_item_list)
 
-  if result != 0:
-    return result
-
   # Extract "special" items from the input system partial target files package.
   # We extract these items to different directory since they require special
   # processing before they will end up in the output directory.
 
-  result = extract_items(
+  extract_items(
       target_files=system_target_files,
       target_files_temp_dir=system_target_files_temp_dir,
       extract_item_list=system_extract_special_item_list)
 
-  if result != 0:
-    return result
-
   # Extract "special" items from the input other partial target files package.
   # We extract these items to different directory since they require special
   # processing before they will end up in the output directory.
 
-  result = extract_items(
+  extract_items(
       target_files=other_target_files,
       target_files_temp_dir=other_target_files_temp_dir,
       extract_item_list=other_extract_special_item_list)
 
-  if result != 0:
-    return result
-
   # Now that the temporary directories contain all the extracted files, perform
   # special case processing on any items that need it. After this function
   # completes successfully, all the files we need to create the output target
   # files package are in place.
 
-  result = process_special_cases(
+  process_special_cases(
       temp_dir=temp_dir,
       system_target_files_temp_dir=system_target_files_temp_dir,
       other_target_files_temp_dir=other_target_files_temp_dir,
       output_target_files_temp_dir=output_target_files_temp_dir)
 
-  if result != 0:
-    return result
-
   # Regenerate IMAGES in the temporary directory.
 
   add_img_args = [
@@ -561,21 +510,14 @@
     f.write(other_content)
 
   command = [
-      # TODO(124468071): Use soong_zip from otatools.zip
-      'prebuilts/build-tools/linux-x86/bin/soong_zip',
+      'soong_zip',
       '-d',
       '-o', output_zip,
       '-C', output_target_files_temp_dir,
       '-l', output_target_files_list,
   ]
   logger.info('creating %s', output_target_files)
-  result = common.RunAndWait(command, verbose=True)
-
-  if result != 0:
-    logger.error('zip command %s failed %d', str(command), result)
-    return result
-
-  return 0
+  common.RunAndWait(command, verbose=True)
 
 
 def merge_target_files_with_temp_dir(
@@ -599,9 +541,6 @@
     package created by merging system and other.
 
     keep_tmp: Keep the temporary directory after processing is complete.
-
-  Returns:
-    On success, 0. Otherwise, a non-zero exit code.
   """
 
   # Create a temporary directory. This will serve as the parent of directories
@@ -617,7 +556,7 @@
   temp_dir = common.MakeTempDir(prefix='merge_target_files_')
 
   try:
-    return merge_target_files(
+    merge_target_files(
         temp_dir=temp_dir,
         system_target_files=system_target_files,
         other_target_files=other_target_files,
@@ -636,44 +575,46 @@
 
   Process command line arguments, then call merge_target_files_with_temp_dir to
   perform the heavy lifting.
-
-  Returns:
-    On success, 0. Otherwise, a non-zero exit code.
   """
 
   common.InitLogging()
 
-  parser = argparse.ArgumentParser()
+  def option_handler(o, a):
+    if o == '--system-target-files':
+      OPTIONS.system_target_files = a
+    elif o == '--other-target-files':
+      OPTIONS.other_target_files = a
+    elif o == '--output-target-files':
+      OPTIONS.output_target_files = a
+    elif o == '--keep_tmp':
+      OPTIONS.keep_tmp = True
+    else:
+      return False
+    return True
 
-  parser.add_argument(
-      '--system-target-files',
-      required=True,
-      help='The input target files package containing system bits.')
+  args = common.ParseOptions(
+      sys.argv[1:], __doc__,
+      extra_long_opts=[
+          'system-target-files=',
+          'other-target-files=',
+          'output-target-files=',
+          "keep_tmp",
+      ],
+      extra_option_handler=option_handler)
 
-  parser.add_argument(
-      '--other-target-files',
-      required=True,
-      help='The input target files package containing other bits.')
+  if (len(args) != 0 or
+      OPTIONS.system_target_files is None or
+      OPTIONS.other_target_files is None or
+      OPTIONS.output_target_files is None):
+    common.Usage(__doc__)
+    sys.exit(1)
 
-  parser.add_argument(
-      '--output-target-files',
-      required=True,
-      help='The output merged target files package.')
-
-  parser.add_argument(
-      '--keep-tmp',
-      required=False,
-      action='store_true',
-      help='Keep the temporary directories after execution.')
-
-  args = parser.parse_args()
-
-  return merge_target_files_with_temp_dir(
-      system_target_files=args.system_target_files,
-      other_target_files=args.other_target_files,
-      output_target_files=args.output_target_files,
-      keep_tmp=args.keep_tmp)
+  merge_target_files_with_temp_dir(
+      system_target_files=OPTIONS.system_target_files,
+      other_target_files=OPTIONS.other_target_files,
+      output_target_files=OPTIONS.output_target_files,
+      keep_tmp=OPTIONS.keep_tmp)
 
 
 if __name__ == '__main__':
-  sys.exit(main())
+  main()
diff --git a/tools/releasetools/ota_from_target_files.py b/tools/releasetools/ota_from_target_files.py
index 4336cb3..fe40936 100755
--- a/tools/releasetools/ota_from_target_files.py
+++ b/tools/releasetools/ota_from_target_files.py
@@ -71,6 +71,13 @@
       partitions but the target build does. For A/B, when this flag is set,
       --skip_postinstall is implied.
 
+  --skip_compatibility_check
+      Skip adding the compatibility package to the generated OTA package.
+
+  --output_metadata_path
+      Write a copy of the metadata to a separate file. Therefore, users can
+      read the post build fingerprint without extracting the OTA package.
+
 Non-A/B OTA specific options
 
   -b  (--binary) <file>
@@ -221,13 +228,16 @@
 OPTIONS.key_passwords = []
 OPTIONS.skip_postinstall = False
 OPTIONS.retrofit_dynamic_partitions = False
+OPTIONS.skip_compatibility_check = False
+OPTIONS.output_metadata_path = None
 
 
 METADATA_NAME = 'META-INF/com/android/metadata'
 POSTINSTALL_CONFIG = 'META/postinstall_config.txt'
 DYNAMIC_PARTITION_INFO = 'META/dynamic_partitions_info.txt'
+AB_PARTITIONS = 'META/ab_partitions.txt'
 UNZIP_PATTERN = ['IMAGES/*', 'META/*']
-SUPER_SPLIT_PATTERN = ['OTA/super_*.img']
+RETROFIT_DAP_UNZIP_PATTERN = ['OTA/super_*.img', AB_PARTITIONS]
 
 
 class BuildInfo(object):
@@ -750,6 +760,11 @@
   if not HasTrebleEnabled(target_zip, target_info):
     return
 
+  # Skip adding the compatibility package as a workaround for b/114240221. The
+  # compatibility will always fail on devices without qualified kernels.
+  if OPTIONS.skip_compatibility_check:
+    return
+
   # Full OTA carries the info for system/vendor both.
   if source_info is None:
     AddCompatibilityArchive(True, True)
@@ -969,10 +984,22 @@
   FinalizeMetadata(metadata, staging_file, output_file, needed_property_files)
 
 
-def WriteMetadata(metadata, output_zip):
+def WriteMetadata(metadata, output):
+  """Writes the metadata to the zip archive or a file.
+
+  Args:
+    metadata: The metadata dict for the package.
+    output: A ZipFile object or a string of the output file path.
+  """
+
   value = "".join(["%s=%s\n" % kv for kv in sorted(metadata.iteritems())])
-  common.ZipWriteStr(output_zip, METADATA_NAME, value,
-                     compress_type=zipfile.ZIP_STORED)
+  if isinstance(output, zipfile.ZipFile):
+    common.ZipWriteStr(output, METADATA_NAME, value,
+                       compress_type=zipfile.ZIP_STORED)
+    return
+
+  with open(output, 'w') as f:
+    f.write(value)
 
 
 def HandleDowngradeMetadata(metadata, target_info, source_info):
@@ -1034,6 +1061,9 @@
   if OPTIONS.wipe_user_data:
     metadata['ota-wipe'] = 'yes'
 
+  if OPTIONS.retrofit_dynamic_partitions:
+    metadata['ota-retrofit-dynamic-partitions'] = 'yes'
+
   is_incremental = source_info is not None
   if is_incremental:
     metadata['pre-build'] = source_info.fingerprint
@@ -1416,6 +1446,11 @@
     for property_files in needed_property_files:
       property_files.Verify(output_zip, metadata[property_files.name].strip())
 
+  # If requested, dump the metadata to a separate file.
+  output_metadata_path = OPTIONS.output_metadata_path
+  if output_metadata_path:
+    WriteMetadata(metadata, output_metadata_path)
+
 
 def WriteBlockIncrementalOTAPackage(target_zip, source_zip, output_file):
   target_info = BuildInfo(OPTIONS.target_info_dict, OPTIONS.oem_dicts)
@@ -1821,7 +1856,8 @@
 
 
 def GetTargetFilesZipForRetrofitDynamicPartitions(input_file,
-                                                  super_block_devices):
+                                                  super_block_devices,
+                                                  dynamic_partition_list):
   """Returns a target-files.zip for retrofitting dynamic partitions.
 
   This allows brillo_update_payload to generate an OTA based on the exact
@@ -1830,6 +1866,7 @@
   Args:
     input_file: The input target-files.zip filename.
     super_block_devices: The list of super block devices
+    dynamic_partition_list: The list of dynamic partitions
 
   Returns:
     The filename of target-files.zip with *.img replaced with super_*.img for
@@ -1846,8 +1883,34 @@
   with zipfile.ZipFile(input_file, 'r') as input_zip:
     namelist = input_zip.namelist()
 
+  input_tmp = common.UnzipTemp(input_file, RETROFIT_DAP_UNZIP_PATTERN)
+
+  # Remove partitions from META/ab_partitions.txt that is in
+  # dynamic_partition_list but not in super_block_devices so that
+  # brillo_update_payload won't generate update for those logical partitions.
+  ab_partitions_file = os.path.join(input_tmp, *AB_PARTITIONS.split('/'))
+  with open(ab_partitions_file) as f:
+    ab_partitions_lines = f.readlines()
+    ab_partitions = [line.strip() for line in ab_partitions_lines]
+  # Assert that all super_block_devices are in ab_partitions
+  super_device_not_updated = [partition for partition in super_block_devices
+                              if partition not in ab_partitions]
+  assert not super_device_not_updated, \
+      "{} is in super_block_devices but not in {}".format(
+          super_device_not_updated, AB_PARTITIONS)
+  # ab_partitions -= (dynamic_partition_list - super_block_devices)
+  new_ab_partitions = common.MakeTempFile(prefix="ab_partitions", suffix=".txt")
+  with open(new_ab_partitions, 'w') as f:
+    for partition in ab_partitions:
+      if (partition in dynamic_partition_list and
+          partition not in super_block_devices):
+          logger.info("Dropping %s from ab_partitions.txt", partition)
+          continue
+      f.write(partition + "\n")
+  to_delete = [AB_PARTITIONS]
+
   # Always skip postinstall for a retrofit update.
-  to_delete = [POSTINSTALL_CONFIG]
+  to_delete += [POSTINSTALL_CONFIG]
 
   # Delete dynamic_partitions_info.txt so that brillo_update_payload thinks this
   # is a regular update on devices without dynamic partitions support.
@@ -1859,7 +1922,6 @@
 
   common.ZipDelete(target_file, to_delete)
 
-  input_tmp = common.UnzipTemp(input_file, SUPER_SPLIT_PATTERN)
   target_zip = zipfile.ZipFile(target_file, 'a', allowZip64=True)
 
   # Write super_{foo}.img as {foo}.img.
@@ -1869,6 +1931,9 @@
     unzipped_file = os.path.join(input_tmp, *src.split('/'))
     common.ZipWrite(target_zip, unzipped_file, arcname=dst)
 
+  # Write new ab_partitions.txt file
+  common.ZipWrite(target_zip, new_ab_partitions, arcname=AB_PARTITIONS)
+
   common.ZipClose(target_zip)
 
   return target_file
@@ -1897,7 +1962,8 @@
 
   if OPTIONS.retrofit_dynamic_partitions:
     target_file = GetTargetFilesZipForRetrofitDynamicPartitions(
-        target_file, target_info.get("super_block_devices").strip().split())
+        target_file, target_info.get("super_block_devices").strip().split(),
+        target_info.get("dynamic_partition_list").strip().split())
   elif OPTIONS.skip_postinstall:
     target_file = GetTargetFilesZipWithoutPostinstallConfig(target_file)
 
@@ -2032,6 +2098,10 @@
       OPTIONS.skip_postinstall = True
     elif o == "--retrofit_dynamic_partitions":
       OPTIONS.retrofit_dynamic_partitions = True
+    elif o == "--skip_compatibility_check":
+      OPTIONS.skip_compatibility_check = True
+    elif o == "--output_metadata_path":
+      OPTIONS.output_metadata_path = a
     else:
       return False
     return True
@@ -2063,6 +2133,8 @@
                                  "extracted_input_target_files=",
                                  "skip_postinstall",
                                  "retrofit_dynamic_partitions",
+                                 "skip_compatibility_check",
+                                 "output_metadata_path=",
                              ], extra_option_handler=option_handler)
 
   if len(args) != 2:
diff --git a/tools/releasetools/test_ota_from_target_files.py b/tools/releasetools/test_ota_from_target_files.py
index 44703db..c2da907 100644
--- a/tools/releasetools/test_ota_from_target_files.py
+++ b/tools/releasetools/test_ota_from_target_files.py
@@ -415,6 +415,7 @@
     # Reset the global options as in ota_from_target_files.py.
     common.OPTIONS.incremental_source = None
     common.OPTIONS.downgrade = False
+    common.OPTIONS.retrofit_dynamic_partitions = False
     common.OPTIONS.timestamp = False
     common.OPTIONS.wipe_user_data = False
     common.OPTIONS.no_signing = False
@@ -517,6 +518,23 @@
         },
         metadata)
 
+  def test_GetPackageMetadata_retrofitDynamicPartitions(self):
+    target_info = BuildInfo(self.TEST_TARGET_INFO_DICT, None)
+    common.OPTIONS.retrofit_dynamic_partitions = True
+    metadata = GetPackageMetadata(target_info)
+    self.assertDictEqual(
+        {
+            'ota-retrofit-dynamic-partitions' : 'yes',
+            'ota-type' : 'BLOCK',
+            'post-build' : 'build-fingerprint-target',
+            'post-build-incremental' : 'build-version-incremental-target',
+            'post-sdk-level' : '27',
+            'post-security-patch-level' : '2017-12-01',
+            'post-timestamp' : '1500000000',
+            'pre-device' : 'product-device',
+        },
+        metadata)
+
   @staticmethod
   def _test_GetPackageMetadata_swapBuildTimestamps(target_info, source_info):
     (target_info['build.prop']['ro.build.date.utc'],
diff --git a/tools/releasetools/test_validate_target_files.py b/tools/releasetools/test_validate_target_files.py
index a6a8876..5f619ec 100644
--- a/tools/releasetools/test_validate_target_files.py
+++ b/tools/releasetools/test_validate_target_files.py
@@ -19,11 +19,13 @@
 import os
 import os.path
 import shutil
+import zipfile
 
 import common
 import test_utils
-import verity_utils
-from validate_target_files import ValidateVerifiedBootImages
+from rangelib import RangeSet
+from validate_target_files import (ValidateVerifiedBootImages,
+                                   ValidateFileConsistency)
 from verity_utils import CreateVerityImageBuilder
 
 
@@ -107,7 +109,8 @@
         AssertionError, ValidateVerifiedBootImages, input_tmp, info_dict,
         options)
 
-  def _generate_system_image(self, output_file):
+  def _generate_system_image(self, output_file, system_root=None,
+                             file_map=None):
     prop_dict = {
         'partition_size': str(1024 * 1024),
         'verity': 'true',
@@ -120,9 +123,12 @@
     image_size = verity_image_builder.CalculateMaxImageSize()
 
     # Use an empty root directory.
-    system_root = common.MakeTempDir()
+    if not system_root:
+      system_root = common.MakeTempDir()
     cmd = ['mkuserimg_mke2fs', '-s', system_root, output_file, 'ext4',
            '/system', str(image_size), '-j', '0']
+    if file_map:
+      cmd.extend(['-B', file_map])
     proc = common.Run(cmd)
     stdoutdata, _ = proc.communicate()
     self.assertEqual(
@@ -155,3 +161,56 @@
         'verity_key_mincrypt' : verity_key_mincrypt,
     }
     ValidateVerifiedBootImages(input_tmp, info_dict, options)
+
+  def test_ValidateFileConsistency_incompleteRange(self):
+    input_tmp = common.MakeTempDir()
+    os.mkdir(os.path.join(input_tmp, 'IMAGES'))
+    system_image = os.path.join(input_tmp, 'IMAGES', 'system.img')
+    system_root = os.path.join(input_tmp, "SYSTEM")
+    os.mkdir(system_root)
+
+    # Write the test file that contain multiple blocks of zeros, and these
+    # zero blocks will be omitted by kernel. And the test files will occupy one
+    # block range each in the final system image.
+    with open(os.path.join(system_root, 'a'), 'w') as f:
+      f.write("aaa")
+      f.write('\0' * 4096 * 3)
+    with open(os.path.join(system_root, 'b'), 'w') as f:
+      f.write("bbb")
+      f.write('\0' * 4096 * 3)
+
+    raw_file_map = os.path.join(input_tmp, 'IMAGES', 'raw_system.map')
+    self._generate_system_image(system_image, system_root, raw_file_map)
+
+    # Parse the generated file map and update the block ranges for each file.
+    file_map_list = {}
+    image_ranges = RangeSet()
+    with open(raw_file_map, 'r') as f:
+      for line in f.readlines():
+        info = line.split()
+        self.assertEqual(2, len(info))
+        image_ranges = image_ranges.union(RangeSet(info[1]))
+        file_map_list[info[0]] = RangeSet(info[1])
+
+    # Add one unoccupied block as the shared block for all test files.
+    mock_shared_block = RangeSet("10-20").subtract(image_ranges).first(1)
+    with open(os.path.join(input_tmp, 'IMAGES', 'system.map'), 'w') as f:
+      for key in sorted(file_map_list.keys()):
+        line = "{} {}\n".format(
+            key, file_map_list[key].union(mock_shared_block))
+        f.write(line)
+
+    # Prepare for the target zip file
+    input_file = common.MakeTempFile()
+    all_entries = ['SYSTEM/', 'SYSTEM/b', 'SYSTEM/a', 'IMAGES/',
+                   'IMAGES/system.map', 'IMAGES/system.img']
+    with zipfile.ZipFile(input_file, 'w') as input_zip:
+      for name in all_entries:
+        input_zip.write(os.path.join(input_tmp, name), arcname=name)
+
+    input_zip = zipfile.ZipFile(input_file, 'r')
+    info_dict = {'extfs_sparse_flag': '-s'}
+
+    # Expect the validation to pass and both files are skipped due to
+    # 'incomplete' block range.
+    ValidateFileConsistency(input_zip, input_tmp, info_dict)
diff --git a/tools/releasetools/validate_target_files.py b/tools/releasetools/validate_target_files.py
index eeb802b..275939c 100755
--- a/tools/releasetools/validate_target_files.py
+++ b/tools/releasetools/validate_target_files.py
@@ -84,11 +84,6 @@
       # bytes past the file length, which is expected to be padded with '\0's.
       ranges = image.file_map[entry]
 
-      incomplete = ranges.extra.get('incomplete', False)
-      if incomplete:
-        logging.warning('Skipping %s that has incomplete block list', entry)
-        continue
-
       # Use the original RangeSet if applicable, which includes the shared
       # blocks. And this needs to happen before checking the monotonicity flag.
       if ranges.extra.get('uses_shared_blocks'):
@@ -96,6 +91,11 @@
       else:
         file_ranges = ranges
 
+      incomplete = file_ranges.extra.get('incomplete', False)
+      if incomplete:
+        logging.warning('Skipping %s that has incomplete block list', entry)
+        continue
+
       # TODO(b/79951650): Handle files with non-monotonic ranges.
       if not file_ranges.monotonic:
         logging.warning(