diff --git a/vlsi/Makefile b/vlsi/Makefile
index 1f7f82bb..9eb726c9 100644
--- a/vlsi/Makefile
+++ b/vlsi/Makefile
@@ -101,6 +101,18 @@ $(SRAM_CONF): $(SRAM_GENERATOR_CONF)
 #########################################################################################
 include $(base_dir)/vcs.mk
 
+SIM_FILE_REQS += \
+	 	$(ROCKETCHIP_RSRCS_DIR)/vsrc/TestDriver.v
+
+# copy files but ignore *.h files in *.f since vcs has +incdir+$(build_dir)
+$(sim_files): $(SIM_FILE_REQS) | $(build_dir)
+	cp -f $^ $(build_dir)
+		$(foreach file,\
+	 			$^,\
+	 			$(if $(filter %.h,$(file)),\
+	 					,\
+	 					echo "$(addprefix $(build_dir)/, $(notdir $(file)))" >> $@;))
+
 SIM_CONF = $(OBJ_DIR)/sim-inputs.yml
 SIM_DEBUG_CONF = $(OBJ_DIR)/sim-debug-inputs.yml
 SIM_TIMING_CONF = $(OBJ_DIR)/sim-timing-inputs.yml
@@ -117,7 +129,7 @@ $(SIM_CONF): $(sim_common_files)
 	echo "  input_files_meta: 'append'" >> $@
 	echo "  timescale: '1ns/10ps'" >> $@
 	echo "  options:" >> $@
-	for x in $(VCS_NONCC_OPTS); do \
+	for x in $(filter-out -f $(sim_common_files),$(VCS_NONCC_OPTS)); do \
 		echo '    - "'$$x'"' >> $@; \
 	done
 	echo "  options_meta: 'append'" >> $@