Home | History | Annotate | Line # | Download | only in dist
fdt_empty_tree.c revision 1.1.1.2.4.2 
      1 /*	$NetBSD: fdt_empty_tree.c,v 1.1.1.2.4.2 2017/12/03 11:38:02 jdolecek Exp $	*/
      2 
      3 /*
      4  * libfdt - Flat Device Tree manipulation
      5  * Copyright (C) 2012 David Gibson, IBM Corporation.
      6  *
      7  * libfdt is dual licensed: you can use it either under the terms of
      8  * the GPL, or the BSD license, at your option.
      9  *
     10  *  a) This library is free software; you can redistribute it and/or
     11  *     modify it under the terms of the GNU General Public License as
     12  *     published by the Free Software Foundation; either version 2 of the
     13  *     License, or (at your option) any later version.
     14  *
     15  *     This library is distributed in the hope that it will be useful,
     16  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
     17  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     18  *     GNU General Public License for more details.
     19  *
     20  *     You should have received a copy of the GNU General Public
     21  *     License along with this library; if not, write to the Free
     22  *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
     23  *     MA 02110-1301 USA
     24  *
     25  * Alternatively,
     26  *
     27  *  b) Redistribution and use in source and binary forms, with or
     28  *     without modification, are permitted provided that the following
     29  *     conditions are met:
     30  *
     31  *     1. Redistributions of source code must retain the above
     32  *        copyright notice, this list of conditions and the following
     33  *        disclaimer.
     34  *     2. Redistributions in binary form must reproduce the above
     35  *        copyright notice, this list of conditions and the following
     36  *        disclaimer in the documentation and/or other materials
     37  *        provided with the distribution.
     38  *
     39  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     40  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     41  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     42  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     43  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     44  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     45  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     46  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     47  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     48  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     49  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     50  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     51  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     52  */
     53 #include "libfdt_env.h"
     54 
     55 #include <fdt.h>
     56 #include <libfdt.h>
     57 
     58 #include "libfdt_internal.h"
     59 
     60 int fdt_create_empty_tree(void *buf, int bufsize)
     61 {
     62 	int err;
     63 
     64 	err = fdt_create(buf, bufsize);
     65 	if (err)
     66 		return err;
     67 
     68 	err = fdt_finish_reservemap(buf);
     69 	if (err)
     70 		return err;
     71 
     72 	err = fdt_begin_node(buf, "");
     73 	if (err)
     74 		return err;
     75 
     76 	err =  fdt_end_node(buf);
     77 	if (err)
     78 		return err;
     79 
     80 	err = fdt_finish(buf);
     81 	if (err)
     82 		return err;
     83 
     84 	return fdt_open_into(buf, buf, bufsize);
     85 }
     86 
     87