Index: sys/kern/bus_if.m
===================================================================
--- sys/kern/bus_if.m
+++ sys/kern/bus_if.m
@@ -955,3 +955,22 @@
 	void *_propvalue;
 	size_t _size;
 } DEFAULT null_get_property;
+
+/**
+ * @brief Gets a child's full path to the device
+ *
+ * The get_device_path method retrieves a device's
+ * full path to the device using one of several
+ * locators present in the system.
+ *
+ * @param _bus			the bus device
+ * @param _child		the child device
+ * @param _locator		locator name
+ * @param _sb			buffer loaction string
+ */
+METHOD int get_device_path {
+	device_t _bus;
+	device_t _child;
+	const char *_locator;
+	struct sbuf *_sb;
+} DEFAULT bus_generic_get_device_path;
Index: sys/kern/subr_bus.c
===================================================================
--- sys/kern/subr_bus.c
+++ sys/kern/subr_bus.c
@@ -4585,6 +4585,41 @@
 	return (ENOENT);
 }
 
+/**
+ * @brief Helper function to implement normal BUS_GET_DEVICE_PATH()
+ *
+ * This function knows how to (a) pass the request up the tree if there's
+ * a parent and (b) Knows how to supply a FreeBSD locator.
+ *
+ * @param bus		bus in the walk up the tree
+ * @param child		leaf node to print information about
+ * @param locator	BUS_LOCATOR_xxx string for locator
+ * @param sb		Buffer to print information into
+ */
+int
+bus_generic_get_device_path(device_t bus, device_t child, const char *locator,
+    struct sbuf *sb)
+{
+	int rv = 0;
+	device_t parent;
+
+	parent = device_get_parent(bus);
+	if (parent != NULL)
+		rv = BUS_GET_DEVICE_PATH(parent, bus, locator, sb);
+	if (strcmp(locator, BUS_LOCATOR_FREEBSD) == 0) {
+		if (rv == 0) {
+			sbuf_printf(sb, "/%s", device_get_nameunit(child));
+		}
+		return (rv);
+	}
+	/*
+	 * Don't know what to do. So assume we do nothing. Not sure that's
+	 * the right thing, but keeps us from having a big list here.
+	 */
+	return (0);
+}
+
+
 /**
  * @brief Helper function for implementing BUS_RESCAN().
  *
Index: sys/sys/bus.h
===================================================================
--- sys/sys/bus.h
+++ sys/sys/bus.h
@@ -492,6 +492,8 @@
 				   struct resource_map *map);
 int	bus_generic_write_ivar(device_t dev, device_t child, int which,
 			       uintptr_t value);
+int	bus_generic_get_device_path(device_t bus, device_t child, const char *locator,
+				    struct sbuf *sb);
 int	bus_helper_reset_post(device_t dev, int flags);
 int	bus_helper_reset_prepare(device_t dev, int flags);
 int	bus_null_rescan(device_t dev);
@@ -733,6 +735,9 @@
 #define	BUS_PASS_ORDER_LATE	7
 #define	BUS_PASS_ORDER_LAST	9
 
+#define BUS_LOCATOR_UEFI	"UEFI"
+#define BUS_LOCATOR_FREEBSD	"FreeBSD"
+
 extern int bus_current_pass;
 
 void	bus_set_pass(int pass);