diff --git a/include/fdt.h b/include/fdt.h
index 48ccfd910..3dd3aca3b 100644
--- a/include/fdt.h
+++ b/include/fdt.h
@@ -1,3 +1,22 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
 #ifndef _FDT_H
 #define _FDT_H
 
diff --git a/include/libfdt.h b/include/libfdt.h
index a0b4d5503..61f56ec0d 100644
--- a/include/libfdt.h
+++ b/include/libfdt.h
@@ -1,5 +1,3 @@
-#ifndef _LIBFDT_H
-#define _LIBFDT_H
 /*
  * libfdt - Flat Device Tree manipulation
  * Copyright (C) 2006 David Gibson, IBM Corporation.
@@ -19,6 +17,9 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#ifndef _LIBFDT_H
+#define _LIBFDT_H
+
 #include <fdt.h>
 #include <libfdt_env.h>
 
@@ -60,6 +61,8 @@
 #define fdt_set_header(fdt, field, val) \
 	((struct fdt_header *)(fdt))->field = cpu_to_fdt32(val)
 
+int fdt_check_header(const void *fdt);
+
 void *fdt_offset_ptr(const void *fdt, int offset, int checklen);
 
 #define fdt_offset_ptr_typed(fdt, offset, var) \
diff --git a/include/libfdt_env.h b/include/libfdt_env.h
index 6c7785254..e746314b1 100644
--- a/include/libfdt_env.h
+++ b/include/libfdt_env.h
@@ -1,3 +1,23 @@
+/*
+ * libfdt - Flat Device Tree manipulation (build/run environment adaptation)
+ * Copyright (C) 2007 Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
+ * Original version written by David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
 #ifndef _LIBFDT_ENV_H
 #define _LIBFDT_ENV_H
 
diff --git a/libfdt/fdt.c b/libfdt/fdt.c
index 4b1c8abf9..212b83838 100644
--- a/libfdt/fdt.c
+++ b/libfdt/fdt.c
@@ -23,7 +23,7 @@
 
 #include "libfdt_internal.h"
 
-int _fdt_check_header(const void *fdt)
+int fdt_check_header(const void *fdt)
 {
 	if (fdt_magic(fdt) == FDT_MAGIC) {
 		/* Complete tree */
@@ -72,7 +72,7 @@ const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
 
 int fdt_move(const void *fdt, void *buf, int bufsize)
 {
-	int err = _fdt_check_header(fdt);
+	int err = fdt_check_header(fdt);
 
 	if (err)
 		return err;
diff --git a/libfdt/fdt_ro.c b/libfdt/fdt_ro.c
index ce01dc700..271132487 100644
--- a/libfdt/fdt_ro.c
+++ b/libfdt/fdt_ro.c
@@ -25,7 +25,7 @@
 
 #define CHECK_HEADER(fdt)	{ \
 	int err; \
-	if ((err = _fdt_check_header(fdt)) != 0) \
+	if ((err = fdt_check_header(fdt)) != 0) \
 		return err; \
 }
 
@@ -188,7 +188,7 @@ struct fdt_property *fdt_get_property(const void *fdt,
 	int offset, nextoffset;
 	int err;
 
-	if ((err = _fdt_check_header(fdt)) != 0)
+	if ((err = fdt_check_header(fdt)) != 0)
 		goto fail;
 
 	err = -FDT_ERR_BADOFFSET;
diff --git a/libfdt/fdt_rw.c b/libfdt/fdt_rw.c
index b33fbf45d..aaafc5364 100644
--- a/libfdt/fdt_rw.c
+++ b/libfdt/fdt_rw.c
@@ -27,7 +27,7 @@ static int rw_check_header(void *fdt)
 {
 	int err;
 
-	if ((err = _fdt_check_header(fdt)))
+	if ((err = fdt_check_header(fdt)))
 		return err;
 	if (fdt_version(fdt) < 0x11)
 		return -FDT_ERR_BADVERSION;