diff --git a/board/trab/rs485.h b/board/trab/rs485.h
new file mode 100644
index 0000000..d4a008a
--- /dev/null
+++ b/board/trab/rs485.h
@@ -0,0 +1,37 @@
+/*
+ * (C) Copyright 2003
+ * Martin Krause, TQ-Systems GmbH, <martin.krause@tqs.de>
+ *
+ * Based on cpu/arm920t/serial.c, by Gary Jennejohn
+ * (C) Copyright 2002 Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef _RS485_H_
+#define _RS485_H_
+
+#include <s3c2400.h>
+
+int rs485_init (void);
+int rs485_getc (void);
+void rs485_putc (const char c);
+int rs485_tstc (void);
+void rs485_puts (const char *s);
+void trab_rs485_enable_tx(void);
+void trab_rs485_enable_rx(void);
+
+#endif	/* _RS485_H_ */