xref: /OK3568_Linux_fs/kernel/scripts/dtc/libfdt/fdt_empty_tree.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun // SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun  * libfdt - Flat Device Tree manipulation
4*4882a593Smuzhiyun  * Copyright (C) 2012 David Gibson, IBM Corporation.
5*4882a593Smuzhiyun  */
6*4882a593Smuzhiyun #include "libfdt_env.h"
7*4882a593Smuzhiyun 
8*4882a593Smuzhiyun #include <fdt.h>
9*4882a593Smuzhiyun #include <libfdt.h>
10*4882a593Smuzhiyun 
11*4882a593Smuzhiyun #include "libfdt_internal.h"
12*4882a593Smuzhiyun 
fdt_create_empty_tree(void * buf,int bufsize)13*4882a593Smuzhiyun int fdt_create_empty_tree(void *buf, int bufsize)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun 	int err;
16*4882a593Smuzhiyun 
17*4882a593Smuzhiyun 	err = fdt_create(buf, bufsize);
18*4882a593Smuzhiyun 	if (err)
19*4882a593Smuzhiyun 		return err;
20*4882a593Smuzhiyun 
21*4882a593Smuzhiyun 	err = fdt_finish_reservemap(buf);
22*4882a593Smuzhiyun 	if (err)
23*4882a593Smuzhiyun 		return err;
24*4882a593Smuzhiyun 
25*4882a593Smuzhiyun 	err = fdt_begin_node(buf, "");
26*4882a593Smuzhiyun 	if (err)
27*4882a593Smuzhiyun 		return err;
28*4882a593Smuzhiyun 
29*4882a593Smuzhiyun 	err =  fdt_end_node(buf);
30*4882a593Smuzhiyun 	if (err)
31*4882a593Smuzhiyun 		return err;
32*4882a593Smuzhiyun 
33*4882a593Smuzhiyun 	err = fdt_finish(buf);
34*4882a593Smuzhiyun 	if (err)
35*4882a593Smuzhiyun 		return err;
36*4882a593Smuzhiyun 
37*4882a593Smuzhiyun 	return fdt_open_into(buf, buf, bufsize);
38*4882a593Smuzhiyun }
39