diff --git a/sys/dev/sio/sio_ebus.c b/sys/dev/sio/sio_ebus.c
new file mode 100644
index 000000000000..af6bc0b633b5
--- /dev/null
+++ b/sys/dev/sio/sio_ebus.c
@@ -0,0 +1,113 @@
+/*-
+ * Copyright (c) 2001 by Thomas Moestl <tmm@FreeBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID($FreeBSD$);
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/timepps.h>
+#include <sys/tty.h>
+
+#include <machine/bus.h>
+
+#include <dev/sio/siovar.h>
+
+#include <ofw/openfirm.h>
+#include <sparc64/ebus/ebusvar.h>
+
+int	sio_ofw_inlist __P((char *name, char *list[]));
+static	int	sio_ebus_attach __P((device_t dev));
+static	int	sio_ebus_probe __P((device_t dev));
+
+static device_method_t sio_ebus_methods[] = {
+	/* Device interface */
+	DEVMETHOD(device_probe,		sio_ebus_probe),
+	DEVMETHOD(device_attach,	sio_ebus_attach),
+
+	{ 0, 0 }
+};
+
+static driver_t sio_ebus_driver = {
+	sio_driver_name,
+	sio_ebus_methods,
+	0,
+};
+
+DRIVER_MODULE(sio, ebus, sio_ebus_driver, sio_devclass, 0, 0);
+
+/* Needed for EBus attach and sparc64 console support */
+char *sio_ofw_names[] = {
+	"serial",
+	"su",
+	"su_pnp",
+	NULL
+};
+
+char *sio_ofw_compat[] = {
+	"su",
+	"su16550",
+	NULL
+};
+
+int
+sio_ofw_inlist(name, list)
+	char	*name;
+	char	*list[];
+{
+	int	i;
+
+	if (name == NULL)
+		return (0);
+	for (i = 0; list[i] != NULL; i++) {
+		if (strcmp(name, list[i]) == 0)
+			return (1);
+	}
+	return (0);
+}
+
+static int
+sio_ebus_probe(dev)
+	device_t	dev;
+{
+	char	*n;
+
+	n = ebus_get_name(dev);
+	if (!sio_ofw_inlist(n, sio_ofw_names) && (strcmp(n, "serial") != 0 ||
+	    !sio_ofw_inlist(ebus_get_compat(dev), sio_ofw_compat)))
+		return (ENXIO);
+	/* Do not probe IRQ - isa_irq_pending() does not work for ebus. */
+	return (sioprobe(dev, 0, 0UL, 1));
+}
+
+static int
+sio_ebus_attach(dev)
+	device_t	dev;
+{
+
+	return (sioattach(dev, 0, 0UL));
+}