diff --git a/sys/sparc64/include/bus_common.h b/sys/sparc64/include/bus_common.h
index 851cb72eb6f..8d74eadc7a5 100644
--- a/sys/sparc64/include/bus_common.h
+++ b/sys/sparc64/include/bus_common.h
@@ -66,4 +66,8 @@
 #define	INTPRI(x)	((x) & 0x7)
 #define	INTINO(x)	((x) & INTMAP_INO)
 
+/* counter-timer support. */
+void sparc64_counter_init(bus_space_tag_t tag, bus_space_handle_t handle,
+    bus_addr_t offset);
+
 #endif	/* !_MACHINE_BUS_COMMON_H_ */
diff --git a/sys/sparc64/sparc64/counter.c b/sys/sparc64/sparc64/counter.c
new file mode 100644
index 00000000000..19bffef94f4
--- /dev/null
+++ b/sys/sparc64/sparc64/counter.c
@@ -0,0 +1,109 @@
+/*-
+ * Copyright (c) 2002 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/malloc.h>
+#include <sys/systm.h>
+#include <sys/time.h>
+#include <sys/timetc.h>
+
+#include <machine/bus.h>
+#include <machine/bus_common.h>
+
+#define	COUNTER_MASK	((1 << 29) - 1)
+#define	COUNTER_FREQ	1000000
+
+/* Bits in the limit register. */
+#define	CTLR_INTEN	(1U << 31)	/* Enable timer interrupts */
+#define	CTLR_RELOAD	(1U << 30)	/* Zero counter on write to limit reg */
+#define	CTLR_PERIODIC	(1U << 29)	/* Wrap to 0 if limit is reached */
+
+/* Offsets of the registers for the two counters. */
+#define	CTR_CT0		0x00
+#define	CTR_CT1		0x10
+
+/* Register offsets from the base address. */
+#define	CTR_COUNT	0x00
+#define	CTR_LIMIT	0x08
+
+
+static unsigned counter_get_timecount(struct timecounter *tc);
+
+struct ct_softc {
+	bus_space_tag_t		sc_tag;
+	bus_space_handle_t	sc_handle;
+	bus_addr_t		sc_offset;
+};
+
+
+/*
+ * This is called from the psycho and sbus drivers. It does not directly attach
+ * to the nexus because it shares register space with the bridge in question.
+ */
+void
+sparc64_counter_init(bus_space_tag_t tag, bus_space_handle_t handle,
+    bus_addr_t offset)
+{
+	struct timecounter *tc;
+	struct ct_softc *sc;
+
+	printf("initialializing counter-timer\n");
+	/*
+	 * Turn off interrupts from both counters. Set the limit to the maximum
+	 * value (although that should not change anything with CTLR_INTEN and
+	 * CTLR_PERIODIC off).
+	 */
+	bus_space_write_8(tag, handle, offset + CTR_CT0 + CTR_LIMIT
+	    , COUNTER_MASK);
+	bus_space_write_8(tag, handle, offset + CTR_CT1 + CTR_LIMIT,
+	    COUNTER_MASK);
+	/* Register as a time counter. */
+	tc = malloc(sizeof(*tc), M_DEVBUF, M_WAITOK);
+	sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK);
+	sc->sc_tag = tag;
+	sc->sc_handle = handle;
+	sc->sc_offset = offset + CTR_CT0;
+	tc->tc_get_timecount = counter_get_timecount;
+	tc->tc_poll_pps = NULL;
+	tc->tc_counter_mask = COUNTER_MASK;
+	tc->tc_frequency = COUNTER_FREQ;
+	tc->tc_name = "counter-timer";
+	tc->tc_priv = sc;
+	tc_init(tc);
+}
+
+static unsigned
+counter_get_timecount(struct timecounter *tc)
+{
+	struct ct_softc *sc;
+
+	sc = tc->tc_priv;
+	return (bus_space_read_8(sc->sc_tag, sc->sc_handle, sc->sc_offset) &
+	    COUNTER_MASK);
+}
+