diff --git a/CleanSpec.mk b/CleanSpec.mk
index 3c8d6ce..a97c71a 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -374,6 +374,10 @@
 # $(PRODUCT_OUT)/recovery/root/sdcard goes from symlink to folder.
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/recovery/root/sdcard)
 
+# Add BOARD_USES_SYSTEM_OTHER_ODEX
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/app/*)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/system/priv-app/*)
+
 # ************************************************
 # NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
 # ************************************************
diff --git a/core/Makefile b/core/Makefile
index b69d9d9..a3bdc3a 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -1416,6 +1416,59 @@
 
 
 # -----------------------------------------------------------------
+# system_other partition image
+ifeq ($(BOARD_USES_SYSTEM_OTHER_ODEX),true)
+BOARD_USES_SYSTEM_OTHER := true
+
+# Marker file to identify that odex files are installed
+INSTALLED_SYSTEM_OTHER_ODEX_MARKER := $(TARGET_OUT_SYSTEM_OTHER)/system-other-odex-marker
+ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_SYSTEM_OTHER_ODEX_MARKER)
+$(INSTALLED_SYSTEM_OTHER_ODEX_MARKER):
+	$(hide) touch $@
+endif
+
+ifdef BOARD_USES_SYSTEM_OTHER
+INTERNAL_SYSTEMOTHERIMAGE_FILES := \
+    $(filter $(TARGET_OUT_SYSTEM_OTHER)/%,\
+      $(ALL_DEFAULT_INSTALLED_MODULES)\
+      $(ALL_PDK_FUSION_FILES))
+
+INSTALLED_FILES_FILE_SYSTEMOTHER := $(PRODUCT_OUT)/installed-files-system-other.txt
+$(INSTALLED_FILES_FILE_SYSTEMOTHER) : $(INTERNAL_SYSTEMOTHERIMAGE_FILES)
+	@echo Installed file list: $@
+	@mkdir -p $(dir $@)
+	@rm -f $@
+	$(hide) build/tools/fileslist.py $(TARGET_OUT_SYSTEM_OTHER) > $@
+
+systemotherimage_intermediates := \
+    $(call intermediates-dir-for,PACKAGING,system_other)
+BUILT_SYSTEMOTHERIMAGE_TARGET := $(PRODUCT_OUT)/system_other.img
+
+# Note that we assert the size is SYSTEMIMAGE_PARTITION_SIZE since this is the 'b' system image.
+define build-systemotherimage-target
+  $(call pretty,"Target system_other fs image: $(INSTALLED_SYSTEMOTHERIMAGE_TARGET)")
+  @mkdir -p $(TARGET_OUT_SYSTEM_OTHER)
+  @mkdir -p $(systemotherimage_intermediates) && rm -rf $(systemotherimage_intermediates)/system_other_image_info.txt
+  $(call generate-userimage-prop-dictionary, $(systemotherimage_intermediates)/system_other_image_info.txt, skip_fsck=true)
+  $(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH \
+      ./build/tools/releasetools/build_image.py \
+      $(TARGET_OUT_SYSTEM_OTHER) $(systemotherimage_intermediates)/system_other_image_info.txt $(INSTALLED_SYSTEMOTHERIMAGE_TARGET) $(TARGET_OUT)
+  $(hide) $(call assert-max-image-size,$(INSTALLED_SYSTEMOTHERIMAGE_TARGET),$(BOARD_SYSTEMIMAGE_PARTITION_SIZE))
+endef
+
+# We just build this directly to the install location.
+INSTALLED_SYSTEMOTHERIMAGE_TARGET := $(BUILT_SYSTEMOTHERIMAGE_TARGET)
+$(INSTALLED_SYSTEMOTHERIMAGE_TARGET): $(INTERNAL_USERIMAGES_DEPS) $(INTERNAL_SYSTEMOTHERIMAGE_FILES) $(INSTALLED_FILES_FILE_SYSTEMOTHER)
+	$(build-systemotherimage-target)
+
+.PHONY: systemotherimage-nodeps
+systemotherimage-nodeps: | $(INTERNAL_USERIMAGES_DEPS)
+	$(build-systemotherimage-target)
+
+endif # BOARD_USES_SYSTEM_OTHER
+
+
+# -----------------------------------------------------------------
 # vendor partition image
 ifdef BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE
 INTERNAL_VENDORIMAGE_FILES := \
@@ -1646,6 +1699,7 @@
 		$(INSTALLED_USERDATAIMAGE_TARGET) \
 		$(INSTALLED_CACHEIMAGE_TARGET) \
 		$(INSTALLED_VENDORIMAGE_TARGET) \
+		$(INSTALLED_SYSTEMOTHERIMAGE_TARGET) \
 		$(INSTALLED_ANDROID_INFO_TXT_TARGET) \
 		$(SELINUX_FC) \
 		$(APKCERTS_FILE) \
@@ -1719,6 +1773,11 @@
 	$(hide) $(call package_files-copy-root, \
 		$(TARGET_OUT_VENDOR),$(zip_root)/VENDOR)
 endif
+ifdef INSTALLED_SYSTEMOTHERIMAGE_TARGET
+	@# Contents of the system_other image
+	$(hide) $(call package_files-copy-root, \
+		$(TARGET_OUT_SYSTEM_OTHER),$(zip_root)/SYSTEM_OTHER)
+endif
 	@# Extra contents of the OTA package
 	$(hide) mkdir -p $(zip_root)/OTA
 	$(hide) $(ACP) $(INSTALLED_ANDROID_INFO_TXT_TARGET) $(zip_root)/OTA/
@@ -1833,6 +1892,9 @@
 ifneq ($(INSTALLED_RECOVERYIMAGE_TARGET),)
 	$(hide) zipinfo -1 $@ | awk 'BEGIN { FS="RECOVERY/RAMDISK/" } /^RECOVERY\/RAMDISK\// {print $$2}' | $(HOST_OUT_EXECUTABLES)/fs_config -C -D $(TARGET_OUT) -S $(SELINUX_FC) > $(zip_root)/META/recovery_filesystem_config.txt
 endif
+ifdef INSTALLED_SYSTEMOTHERIMAGE_TARGET
+	$(hide) zipinfo -1 $@ | awk 'BEGIN { FS="SYSTEM_OTHER/" } /^SYSTEM_OTHER\// { print "system/" $$2}' | $(HOST_OUT_EXECUTABLES)/fs_config -C -D $(TARGET_OUT) -S $(SELINUX_FC) > $(zip_root)/META/system_other_filesystem_config.txt
+endif
 	$(hide) (cd $(zip_root) && zip -qX ../$(notdir $@) META/*filesystem_config.txt)
 	$(hide) PATH=$(foreach p,$(INTERNAL_USERIMAGES_BINARY_PATHS),$(p):)$$PATH MKBOOTIMG=$(MKBOOTIMG) \
 	    ./build/tools/releasetools/add_img_to_target_files -v -p $(HOST_OUT) $@
diff --git a/core/cleanbuild.mk b/core/cleanbuild.mk
index 0d6a406..e46d934 100644
--- a/core/cleanbuild.mk
+++ b/core/cleanbuild.mk
@@ -242,6 +242,7 @@
 	$(PRODUCT_OUT)/recovery \
 	$(PRODUCT_OUT)/root \
 	$(PRODUCT_OUT)/system \
+	$(PRODUCT_OUT)/system_other \
 	$(PRODUCT_OUT)/vendor \
 	$(PRODUCT_OUT)/oem \
 	$(PRODUCT_OUT)/dex_bootjars \
diff --git a/core/dex_preopt.mk b/core/dex_preopt.mk
index d182dc0..5df9dc3 100644
--- a/core/dex_preopt.mk
+++ b/core/dex_preopt.mk
@@ -19,6 +19,10 @@
 # The default value for LOCAL_DEX_PREOPT
 DEX_PREOPT_DEFAULT ?= true
 
+# The default filter for which files go into the system_other image (if it is
+# being used). To bundle everything one should set this to '%'
+SYSTEM_OTHER_ODEX_FILTER ?= app/% priv-app/%
+
 # The default values for pre-opting: always preopt PIC.
 # Conditional to building on linux, as dex2oat currently does not work on darwin.
 ifeq ($(HOST_OS),linux)
diff --git a/core/dex_preopt_libart.mk b/core/dex_preopt_libart.mk
index 9410c3c..acd4a02 100644
--- a/core/dex_preopt_libart.mk
+++ b/core/dex_preopt_libart.mk
@@ -59,6 +59,21 @@
 $(dir $(2))oat/$(1)/$(basename $(notdir $(2))).odex
 endef
 
+# Returns the full path to the installed .odex file.
+# This handles BOARD_USES_SYSTEM_OTHER_ODEX to install odex files into another
+# partition.
+# $(1): the arch name.
+# $(2): the full install path (including file name) of the corresponding .apk.
+ifeq ($(BOARD_USES_SYSTEM_OTHER_ODEX),true)
+define get-odex-installed-file-path
+$(if $(filter $(foreach f,$(SYSTEM_OTHER_ODEX_FILTER),$(TARGET_OUT)/$(f)),$(2)),
+  $(call get-odex-file-path,$(1),$(patsubst $(TARGET_OUT)/%,$(TARGET_OUT_SYSTEM_OTHER)/%,$(2))),
+  $(call get-odex-file-path,$(1),$(2)))
+endef
+else
+get-odex-installed-file-path = $(get-odex-file-path)
+endif
+
 # Returns the path to the image file (such as "/system/framework/<arch>/boot.art"
 # $(1): the arch name (such as "arm")
 # $(2): the image location (such as "/system/framework/boot.art")
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index 4e486d5..b05d4da 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -39,6 +39,14 @@
 LOCAL_DEX_PREOPT :=
 endif
 endif
+# if installing into system, and odex are being installed into system_other, don't strip
+ifeq ($(BOARD_USES_SYSTEM_OTHER_ODEX),true)
+ifeq ($(LOCAL_DEX_PREOPT),true)
+ifneq ($(filter $(foreach f,$(SYSTEM_OTHER_ODEX_FILTER),$(TARGET_OUT)/$(f)),$(my_module_path)),)
+LOCAL_DEX_PREOPT := nostripping
+endif
+endif
+endif
 
 built_odex :=
 installed_odex :=
@@ -100,14 +108,6 @@
 endif
 
 $(built_odex): PRIVATE_DEX_PREOPT_FLAGS := $(LOCAL_DEX_PREOPT_FLAGS)
-
-# Use pattern rule - we may have multiple installed odex files.
-# Ugly syntax - See the definition get-odex-file-path.
-$(installed_odex) : $(dir $(LOCAL_INSTALLED_MODULE))%$(notdir $(word 1,$(installed_odex))) \
-                  : $(dir $(LOCAL_BUILT_MODULE))%$(notdir $(word 1,$(built_odex))) \
-    | $(ACP)
-	@echo "Install: $@"
-	$(copy-file-to-target)
 endif
 
 # Add the installed_odex to the list of installed files for this module.
diff --git a/core/envsetup.mk b/core/envsetup.mk
index 0a72603..ce31ddb 100644
--- a/core/envsetup.mk
+++ b/core/envsetup.mk
@@ -109,6 +109,7 @@
 # TARGET_COPY_OUT_* are all relative to the staging directory, ie PRODUCT_OUT.
 # Define them here so they can be used in product config files.
 TARGET_COPY_OUT_SYSTEM := system
+TARGET_COPY_OUT_SYSTEM_OTHER := system_other
 TARGET_COPY_OUT_DATA := data
 TARGET_COPY_OUT_OEM := oem
 TARGET_COPY_OUT_ODM := odm
@@ -322,6 +323,8 @@
 TARGET_OUT_NOTICE_FILES := $(TARGET_OUT_INTERMEDIATES)/NOTICE_FILES
 TARGET_OUT_FAKE := $(PRODUCT_OUT)/fake_packages
 
+TARGET_OUT_SYSTEM_OTHER := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_SYSTEM_OTHER)
+
 # Out for TARGET_2ND_ARCH
 TARGET_2ND_ARCH_VAR_PREFIX := $(HOST_2ND_ARCH_VAR_PREFIX)
 TARGET_2ND_ARCH_MODULE_SUFFIX := $(HOST_2ND_ARCH_MODULE_SUFFIX)
diff --git a/core/main.mk b/core/main.mk
index 651ba98..a612f83 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -81,6 +81,7 @@
     userdataimage-nodeps userdatatarball-nodeps \
     cacheimage-nodeps \
     vendorimage-nodeps \
+    systemotherimage-nodeps \
     ramdisk-nodeps \
     bootimage-nodeps \
     recoveryimage-nodeps \
@@ -928,6 +929,9 @@
 .PHONY: vendorimage
 vendorimage: $(INSTALLED_VENDORIMAGE_TARGET)
 
+.PHONY: systemotherimage
+systemotherimage: $(INSTALLED_SYSTEMOTHERIMAGE_TARGET)
+
 .PHONY: bootimage
 bootimage: $(INSTALLED_BOOTIMAGE_TARGET)
 
@@ -955,8 +959,10 @@
 	$(INSTALLED_USERDATAIMAGE_TARGET) \
 	$(INSTALLED_CACHEIMAGE_TARGET) \
 	$(INSTALLED_VENDORIMAGE_TARGET) \
+	$(INSTALLED_SYSTEMOTHERIMAGE_TARGET) \
 	$(INSTALLED_FILES_FILE) \
-	$(INSTALLED_FILES_FILE_VENDOR)
+	$(INSTALLED_FILES_FILE_VENDOR) \
+	$(INSTALLED_FILES_FILE_SYSTEMOTHER)
 
 # dist_files only for putting your library into the dist directory with a full build.
 .PHONY: dist_files
@@ -1017,6 +1023,7 @@
     $(SYMBOLS_ZIP) \
     $(INSTALLED_FILES_FILE) \
     $(INSTALLED_FILES_FILE_VENDOR) \
+    $(INSTALLED_FILES_FILE_SYSTEMOTHER) \
     $(INSTALLED_BUILD_PROP_TARGET) \
     $(BUILT_TARGET_FILES_PACKAGE) \
     $(INSTALLED_ANDROID_INFO_TXT_TARGET) \
diff --git a/core/setup_one_odex.mk b/core/setup_one_odex.mk
index ec8a28a..36b6817 100644
--- a/core/setup_one_odex.mk
+++ b/core/setup_one_odex.mk
@@ -32,7 +32,9 @@
     $(DEXPREOPT_ONE_FILE_DEPENDENCY_TOOLS) \
     $(my_dex_preopt_image_filename)
 
-my_installed_odex := $(call get-odex-file-path,$($(my_2nd_arch_prefix)DEX2OAT_TARGET_ARCH),$(LOCAL_INSTALLED_MODULE))
+my_installed_odex := $(call get-odex-installed-file-path,$($(my_2nd_arch_prefix)DEX2OAT_TARGET_ARCH),$(LOCAL_INSTALLED_MODULE))
+
+$(eval $(call copy-one-file,$(my_built_odex),$(my_installed_odex)))
 
 built_odex += $(my_built_odex)
 installed_odex += $(my_installed_odex)
diff --git a/tools/releasetools/add_img_to_target_files.py b/tools/releasetools/add_img_to_target_files.py
index 7cb9072..ddc0d0b 100755
--- a/tools/releasetools/add_img_to_target_files.py
+++ b/tools/releasetools/add_img_to_target_files.py
@@ -78,6 +78,24 @@
   return CreateImage(input_dir, info_dict, "system", block_list=block_list)
 
 
+def AddSystemOther(output_zip, prefix="IMAGES/"):
+  """Turn the contents of SYSTEM_OTHER into a system_other image
+  and store it in output_zip."""
+
+  prebuilt_path = os.path.join(OPTIONS.input_tmp, prefix, "system_other.img")
+  if os.path.exists(prebuilt_path):
+    print "system_other.img already exists in %s, no need to rebuild..." % (prefix,)
+    return
+
+  imgname = BuildSystemOther(OPTIONS.input_tmp, OPTIONS.info_dict)
+  common.ZipWrite(output_zip, imgname, prefix + "system_other.img")
+
+def BuildSystemOther(input_dir, info_dict):
+  """Build the (sparse) system_other image and return the name of a temp
+  file containing it."""
+  return CreateImage(input_dir, info_dict, "system_other", block_list=None)
+
+
 def AddVendor(output_zip, prefix="IMAGES/"):
   """Turn the contents of VENDOR into a vendor image and store in it
   output_zip."""
@@ -268,6 +286,8 @@
   except KeyError:
     has_vendor = False
 
+  has_system_other = "SYSTEM_OTHER/" in input_zip.namelist()
+
   OPTIONS.info_dict = common.LoadInfoDict(input_zip, OPTIONS.input_tmp)
 
   common.ZipClose(input_zip)
@@ -314,6 +334,9 @@
   if has_vendor:
     banner("vendor")
     AddVendor(output_zip)
+  if has_system_other:
+    banner("system_other")
+    AddSystemOther(output_zip)
   banner("userdata")
   AddUserdata(output_zip)
   banner("cache")
diff --git a/tools/releasetools/build_image.py b/tools/releasetools/build_image.py
index 3d41e83..a9217ee 100755
--- a/tools/releasetools/build_image.py
+++ b/tools/releasetools/build_image.py
@@ -556,6 +556,19 @@
     copy_prop("system_squashfs_block_size", "squashfs_block_size")
     copy_prop("system_squashfs_disable_4k_align", "squashfs_disable_4k_align")
     copy_prop("system_base_fs_file", "base_fs_file")
+  elif mount_point == "system_other":
+    # We inherit the selinux policies of /system since we contain some of its files.
+    d["mount_point"] = "system"
+    copy_prop("fs_type", "fs_type")
+    copy_prop("system_fs_type", "fs_type")
+    copy_prop("system_size", "partition_size")
+    copy_prop("system_journal_size", "journal_size")
+    copy_prop("system_verity_block_device", "verity_block_device")
+    copy_prop("has_ext4_reserved_blocks", "has_ext4_reserved_blocks")
+    copy_prop("system_squashfs_compressor", "squashfs_compressor")
+    copy_prop("system_squashfs_compressor_opt", "squashfs_compressor_opt")
+    copy_prop("system_squashfs_block_size", "squashfs_block_size")
+    copy_prop("system_base_fs_file", "base_fs_file")
   elif mount_point == "data":
     # Copy the generic fs type first, override with specific one if available.
     copy_prop("fs_type", "fs_type")
@@ -618,6 +631,8 @@
     mount_point = ""
     if image_filename == "system.img":
       mount_point = "system"
+    elif image_filename == "system_other.img":
+      mount_point = "system_other"
     elif image_filename == "userdata.img":
       mount_point = "data"
     elif image_filename == "cache.img":