diff --git a/aos/atom_code/init.h b/aos/atom_code/init.h
new file mode 100644
index 0000000..ffb7afc
--- /dev/null
+++ b/aos/atom_code/init.h
@@ -0,0 +1,19 @@
+#ifndef AOS_ATOM_CODE_INIT_H_
+#define AOS_ATOM_CODE_INIT_H_
+
+namespace aos {
+
+// Does the non-realtime parts of the initialization process.
+void InitNRT();
+// Initializes everything, including the realtime stuff.
+void Init();
+// Same as InitNRT, except will remove an existing shared memory file and create
+// a new one.
+void InitCreate();
+// Cleans up (probably not going to get called very often because few things can
+// exit gracefully).
+void Cleanup();
+
+}  // namespace aos
+
+#endif  // AOS_ATOM_CODE_INIT_H_