diff --git a/include/fdt_support.h b/include/fdt_support.h
index aa0fc58..424c3c6 100644
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -29,6 +29,7 @@
 #include <fdt.h>
 
 int fdt_chosen(void *fdt, ulong initrd_start, ulong initrd_end, int force);
+int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end, int force);
 void do_fixup_by_path(void *fdt, const char *path, const char *prop,
 		      const void *val, int len, int create);
 void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop,