1/*	$OpenBSD: fdt.h,v 1.3 2017/08/23 18:03:54 kettenis Exp $	*/
2
3/*
4 * Copyright (c) 2009 Dariusz Swiderski <sfires@sfires.net>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19struct fdt_head {
20	uint32_t fh_magic;
21	uint32_t fh_size;
22	uint32_t fh_struct_off;
23	uint32_t fh_strings_off;
24	uint32_t fh_reserve_off;
25	uint32_t fh_version;
26	uint32_t fh_comp_ver;	  /* last compatible version */
27	uint32_t fh_boot_cpu_id;  /* fh_version >=2 */
28	uint32_t fh_strings_size; /* fh_version >=3 */
29	uint32_t fh_struct_size;  /* fh_version >=17 */
30};
31
32struct fdt {
33	struct fdt_head *header;
34	char		*tree;
35	char		*strings;
36	char		*memory;
37	char		*end;
38	int		version;
39	int		strings_size;
40	int		struct_size;
41};
42
43#define FDT_MAGIC	0xd00dfeed
44#define FDT_NODE_BEGIN	0x01
45#define FDT_NODE_END	0x02
46#define FDT_PROPERTY	0x03
47#define FDT_NOP		0x04
48#define FDT_END		0x09
49
50#define FDT_CODE_VERSION 0x11
51
52int	 fdt_init(void *);
53void	 fdt_finalize(void);
54size_t	 fdt_get_size(void *);
55void	*fdt_next_node(void *);
56void	*fdt_child_node(void *);
57char	*fdt_node_name(void *);
58void	*fdt_find_node(char *);
59int	 fdt_node_property(void *, char *, char **);
60int	 fdt_node_property_int(void *, char *, int *);
61int	 fdt_node_property_ints(void *, char *, int *, int);
62int	 fdt_node_set_property(void *, char *, void *, int);
63int	 fdt_node_add_property(void *, char *, void *, int);
64int	 fdt_node_add_node(void *, char *, void **);
65void	*fdt_parent_node(void *);
66int	 fdt_node_is_compatible(void *, const char *);
67#ifdef DEBUG
68void	*fdt_print_property(void *, int);
69void 	 fdt_print_node(void *, int);
70void	 fdt_print_tree(void);
71#endif
72