[POWERPC] bootwrapper: Add ft_find_device_rel().

Add a function to look up a relative, rather than absolute, path name.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/arch/powerpc/boot/flatdevtree.c b/arch/powerpc/boot/flatdevtree.c
index e319a650291..bd006f75e5e 100644
--- a/arch/powerpc/boot/flatdevtree.c
+++ b/arch/powerpc/boot/flatdevtree.c
@@ -654,6 +654,19 @@ void *ft_find_device(struct ft_cxt *cxt, const char *srch_path)
 	return ft_get_phandle(cxt, node);
 }
 
+void *ft_find_device_rel(struct ft_cxt *cxt, const void *top,
+                         const char *srch_path)
+{
+	char *node;
+
+	node = ft_node_ph2node(cxt, top);
+	if (node == NULL)
+		return NULL;
+
+	node = ft_find_descendent(cxt, node, srch_path);
+	return ft_get_phandle(cxt, node);
+}
+
 void *ft_find_descendent(struct ft_cxt *cxt, void *top, const char *srch_path)
 {
 	struct ft_atom atom;