diff --git a/src/arch/i386/include/gateA20.h b/src/arch/i386/include/gateA20.h
new file mode 100644
index 00000000..297ad6f2
--- /dev/null
+++ b/src/arch/i386/include/gateA20.h
@@ -0,0 +1,7 @@
+#ifndef GATEA20_H
+#define GATEA20_H
+
+extern void gateA20_set ( void );
+extern void gateA20_unset ( void );
+
+#endif /* GATEA20_H */
diff --git a/src/include/osloader.h b/src/include/osloader.h
new file mode 100644
index 00000000..12439568
--- /dev/null
+++ b/src/include/osloader.h
@@ -0,0 +1,6 @@
+#ifndef OSLOADER_H
+#define OSLOADER_H
+
+extern int prep_segment ( physaddr_t start, physaddr_t mid, physaddr_t end );
+
+#endif /* OSLOADER_H */