diff --git a/drivers/char/decserial.c b/drivers/char/decserial.c
new file mode 100644
index 0000000..aa14409
--- /dev/null
+++ b/drivers/char/decserial.c
@@ -0,0 +1,100 @@
+/*
+ * sercons.c
+ *      choose the right serial device at boot time
+ *
+ * triemer 6-SEP-1998
+ *      sercons.c is designed to allow the three different kinds 
+ *      of serial devices under the decstation world to co-exist
+ *      in the same kernel.  The idea here is to abstract 
+ *      the pieces of the drivers that are common to this file
+ *      so that they do not clash at compile time and runtime.
+ *
+ * HK 16-SEP-1998 v0.002
+ *      removed the PROM console as this is not a real serial
+ *      device. Added support for PROM console in drivers/char/tty_io.c
+ *      instead. Although it may work to enable more than one 
+ *      console device I strongly recommend to use only one.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <asm/dec/machtype.h>
+
+#ifdef CONFIG_ZS
+extern int zs_init(void);
+#endif
+
+#ifdef CONFIG_DZ
+extern int dz_init(void);
+#endif
+
+#ifdef CONFIG_SERIAL_CONSOLE
+
+#ifdef CONFIG_ZS
+extern void zs_serial_console_init(void);
+#endif
+
+#ifdef CONFIG_DZ
+extern void dz_serial_console_init(void);
+#endif
+
+#endif
+
+/* rs_init - starts up the serial interface -
+   handle normal case of starting up the serial interface */
+
+#ifdef CONFIG_SERIAL
+
+int __init rs_init(void)
+{
+
+#if defined(CONFIG_ZS) && defined(CONFIG_DZ)
+    if (IOASIC)
+	return zs_init();
+    else
+	return dz_init();
+#else
+
+#ifdef CONFIG_ZS
+    return zs_init();
+#endif
+
+#ifdef CONFIG_DZ
+    return dz_init();
+#endif
+
+#endif
+}
+
+__initcall(rs_init);
+
+#endif
+
+#ifdef CONFIG_SERIAL_CONSOLE
+
+/* serial_console_init handles the special case of starting
+ *   up the console on the serial port
+ */
+static int __init decserial_console_init(void)
+{
+#if defined(CONFIG_ZS) && defined(CONFIG_DZ)
+    if (IOASIC)
+	zs_serial_console_init();
+    else
+	dz_serial_console_init();
+#else
+
+#ifdef CONFIG_ZS
+    zs_serial_console_init();
+#endif
+
+#ifdef CONFIG_DZ
+    dz_serial_console_init();
+#endif
+
+#endif
+    return 0;
+}
+console_initcall(decserial_console_init);
+
+#endif