diff --git a/runtime/include/smc-handler.h b/runtime/include/smc-handler.h
index 5965078..c24099b 100644
--- a/runtime/include/smc-handler.h
+++ b/runtime/include/smc-handler.h
@@ -96,4 +96,14 @@
 			unsigned long top,
 			struct smc_result *res);
 
+unsigned long smc_dev_mem_map(unsigned long rd_addr,
+				unsigned long map_addr,
+				unsigned long ulevel,
+				unsigned long dev_mem_addr);
+
+void smc_dev_mem_unmap(unsigned long rd_addr,
+			unsigned long map_addr,
+			unsigned long ulevel,
+			struct smc_result *res);
+
 #endif /* SMC_HANDLER_H */