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  • /*
     * libfdt - Flat Device Tree manipulation
     * Copyright (C) 2012 David Gibson, IBM Corporation.
     *
     * libfdt is dual licensed: you can use it either under the terms of
     * the GPL, or the BSD license, at your option.
     *
     *  a) This library is free software; you can redistribute it and/or
     *     modify it under the terms of the GNU General Public License as
     *     published by the Free Software Foundation; either version 2 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 General Public License for more details.
     *
     *     You should have received a copy of the GNU 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
     *
     * Alternatively,
     *
     *  b) Redistribution and use in source and binary forms, with or
     *     without modification, are permitted provided that the following
     *     conditions are met:
     *
     *     1. Redistributions of source code must retain the above
     *        copyright notice, this list of conditions and the following
     *        disclaimer.
     *     2. Redistributions in binary form must reproduce the above
     *        copyright notice, this list of conditions and the following
     *        disclaimer in the documentation and/or other materials
     *        provided with the distribution.
     *
     *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     */
    #include "libfdt_env.h"
    
    #include <fdt.h>
    #include <libfdt.h>
    
    #include "libfdt_internal.h"
    
    int fdt_create_empty_tree(void *buf, int bufsize)
    {
    	int err;
    
    	err = fdt_create(buf, bufsize);
    	if (err)
    		return err;
    
    	err = fdt_finish_reservemap(buf);
    	if (err)
    		return err;
    
    	err = fdt_begin_node(buf, "");
    	if (err)
    		return err;
    
    	err =  fdt_end_node(buf);
    	if (err)
    		return err;
    
    	err = fdt_finish(buf);
    	if (err)
    		return err;
    
    	return fdt_open_into(buf, buf, bufsize);
    }