1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright (c) 2017 Google, Inc
4  * Written by Simon Glass <sjg@chromium.org>
5  *
6  * Support for a 'live' (as opposed to flat) device tree
7  */
8 
9 #ifndef _OF_LIVE_H
10 #define _OF_LIVE_H
11 
12 struct device_node;
13 
14 /**
15  * of_live_build() - build a live (hierarchical) tree from a flat DT
16  *
17  * @fdt_blob: Input tree to convert
18  * @rootp: Returns live tree that was created
19  * Return: 0 if OK, -ve on error
20  */
21 int of_live_build(const void *fdt_blob, struct device_node **rootp);
22 
23 /**
24  * unflatten_device_tree() - create tree of device_nodes from flat blob
25  *
26  * Note that this allocates a single block of memory, pointed to by *mynodes.
27  * To free the tree, use free(*mynodes)
28  *
29  * unflattens a device-tree, creating the
30  * tree of struct device_node. It also fills the "name" and "type"
31  * pointers of the nodes so the normal device-tree walking functions
32  * can be used.
33  * @blob: The blob to expand
34  * @mynodes: The device_node tree created by the call
35  * Return: 0 if OK, -ve on error
36  */
37 int unflatten_device_tree(const void *blob, struct device_node **mynodes);
38 
39 #endif
40