diff --git a/core/Makefile b/core/Makefile
index dfce50e..39bb5e6 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -3558,6 +3558,24 @@
 endef
 
 $(eval $(call write-partition-file-list,$(systemimage_intermediates)/file_list.txt,$(TARGET_OUT),$(FULL_SYSTEMIMAGE_DEPS)))
+
+ifneq ($(PRODUCT_SOONG_DEFINED_SYSTEM_IMAGE),)
+file_list_diff := $(HOST_OUT_EXECUTABLES)/file_list_diff$(HOST_EXECUTABLE_SUFFIX)
+system_file_diff_timestamp := $(systemimage_intermediates)/file_diff.timestamp
+
+$(system_file_diff_timestamp): \
+	    $(systemimage_intermediates)/file_list.txt \
+	    $(ALL_MODULES.$(PRODUCT_SOONG_DEFINED_SYSTEM_IMAGE).FILESYSTEM_FILELIST) \
+	    $(ALL_MODULES.system_image_diff_allowlist.INSTALLED) \
+	    $(file_list_diff)
+	$(file_list_diff) $(systemimage_intermediates)/file_list.txt \
+	  $(ALL_MODULES.$(PRODUCT_SOONG_DEFINED_SYSTEM_IMAGE).FILESYSTEM_FILELIST) \
+	  $(ALL_MODULES.system_image_diff_allowlist.INSTALLED) $(PRODUCT_SOONG_DEFINED_SYSTEM_IMAGE)
+	touch $@
+
+$(BUILT_SYSTEMIMAGE): $(system_file_diff_timestamp)
+endif
+
 # Used by soong sandwich to request the staging dir be built
 $(systemimage_intermediates)/staging_dir.stamp: $(filter $(TARGET_OUT)/%,$(FULL_SYSTEMIMAGE_DEPS))
 	touch $@
diff --git a/core/base_rules.mk b/core/base_rules.mk
index a8cf67e..a9d6494 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -1059,6 +1059,11 @@
       $(ALL_MODULES.$(my_register_name).ACONFIG_FILES) $(LOCAL_ACONFIG_FILES)
 endif
 
+ifdef LOCAL_FILESYSTEM_FILELIST
+  ALL_MODULES.$(my_register_name).FILESYSTEM_FILELIST := \
+      $(ALL_MODULES.$(my_register_name).FILESYSTEM_FILELIST) $(LOCAL_FILESYSTEM_FILELIST)
+endif
+
 ifndef LOCAL_SOONG_MODULE_INFO_JSON
   ALL_MAKE_MODULE_INFO_JSON_MODULES += $(my_register_name)
   ALL_MODULES.$(my_register_name).SHARED_LIBS := \
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 6192690..fed19e6 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -87,6 +87,7 @@
 LOCAL_EXTRA_FULL_TEST_CONFIGS:=
 LOCAL_EXTRACT_APK:=
 LOCAL_EXTRACT_DPI_APK:=
+LOCAL_FILESYSTEM_FILELIST:=
 LOCAL_FINDBUGS_FLAGS:=
 LOCAL_FORCE_STATIC_EXECUTABLE:=
 LOCAL_FULL_CLASSES_JACOCO_JAR:=
diff --git a/core/product.mk b/core/product.mk
index 5ceccbf..ad80ee4 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -492,6 +492,9 @@
 # by this flag.
 _product_single_value_vars += PRODUCT_NOT_DEBUGGABLE_IN_USERDEBUG
 
+# If set, build would generate system image from Soong-defined module.
+_product_single_value_vars += PRODUCT_SOONG_DEFINED_SYSTEM_IMAGE
+
 .KATI_READONLY := _product_single_value_vars _product_list_vars
 _product_var_list :=$= $(_product_single_value_vars) $(_product_list_vars)