diff --git a/sys/powerpc/aim/machdep.c b/sys/powerpc/aim/machdep.c
index 5dbb5ee17043..e009b181e43b 100644
--- a/sys/powerpc/aim/machdep.c
+++ b/sys/powerpc/aim/machdep.c
@@ -162,8 +162,9 @@ static void
 powerpc_ofw_shutdown(void *junk, int howto)
 {
 	if (howto & RB_HALT) {
-		OF_exit();
+		OF_halt();
 	}
+	OF_reboot();
 }
 
 static void
diff --git a/sys/powerpc/aim/ofw_machdep.c b/sys/powerpc/aim/ofw_machdep.c
index b7027df27ad7..6216045455d5 100644
--- a/sys/powerpc/aim/ofw_machdep.c
+++ b/sys/powerpc/aim/ofw_machdep.c
@@ -173,6 +173,24 @@ ppc_boot(str)
 	OF_boot(str);
 }
 
+void
+OF_halt()
+{
+	int retval;	/* dummy, this may not be needed */
+
+	OF_interpret("shut-down", 1, &retval);
+	for (;;);	/* just in case */
+}
+
+void
+OF_reboot()
+{
+	int retval;	/* dummy, this may not be needed */
+
+	OF_interpret("reset-all", 1, &retval);
+	for (;;);	/* just in case */
+}
+
 void
 OF_getetheraddr(device_t dev, u_char *addr)
 {
diff --git a/sys/powerpc/include/powerpc.h b/sys/powerpc/include/powerpc.h
index aa27c6f1ffd1..1f7992c9e107 100644
--- a/sys/powerpc/include/powerpc.h
+++ b/sys/powerpc/include/powerpc.h
@@ -48,6 +48,8 @@ void	mem_regions(struct mem_region **, int *, struct mem_region **, int *);
  * Not sure whether boot itself should be implementation dependent instead.	XXX
  */
 void	ppc_exit(void);
+void	OF_halt(void);
+void	OF_reboot(void);
 void	ppc_boot(char *bootspec);
 
 int	dk_match(char *name);
diff --git a/sys/powerpc/powerpc/machdep.c b/sys/powerpc/powerpc/machdep.c
index 5dbb5ee17043..e009b181e43b 100644
--- a/sys/powerpc/powerpc/machdep.c
+++ b/sys/powerpc/powerpc/machdep.c
@@ -162,8 +162,9 @@ static void
 powerpc_ofw_shutdown(void *junk, int howto)
 {
 	if (howto & RB_HALT) {
-		OF_exit();
+		OF_halt();
 	}
+	OF_reboot();
 }
 
 static void
diff --git a/sys/powerpc/powerpc/ofw_machdep.c b/sys/powerpc/powerpc/ofw_machdep.c
index b7027df27ad7..6216045455d5 100644
--- a/sys/powerpc/powerpc/ofw_machdep.c
+++ b/sys/powerpc/powerpc/ofw_machdep.c
@@ -173,6 +173,24 @@ ppc_boot(str)
 	OF_boot(str);
 }
 
+void
+OF_halt()
+{
+	int retval;	/* dummy, this may not be needed */
+
+	OF_interpret("shut-down", 1, &retval);
+	for (;;);	/* just in case */
+}
+
+void
+OF_reboot()
+{
+	int retval;	/* dummy, this may not be needed */
+
+	OF_interpret("reset-all", 1, &retval);
+	for (;;);	/* just in case */
+}
+
 void
 OF_getetheraddr(device_t dev, u_char *addr)
 {