1/* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) */
2#ifndef FDT_H
3#define FDT_H
4/*
5 * libfdt - Flat Device Tree manipulation
6 * Copyright (C) 2006 David Gibson, IBM Corporation.
7 * Copyright 2012 Kim Phillips, Freescale Semiconductor.
8 */
9
10#ifndef __ASSEMBLY__
11
12struct fdt_header {
13	fdt32_t magic;			 /* magic word FDT_MAGIC */
14	fdt32_t totalsize;		 /* total size of DT block */
15	fdt32_t off_dt_struct;		 /* offset to structure */
16	fdt32_t off_dt_strings;		 /* offset to strings */
17	fdt32_t off_mem_rsvmap;		 /* offset to memory reserve map */
18	fdt32_t version;		 /* format version */
19	fdt32_t last_comp_version;	 /* last compatible version */
20
21	/* version 2 fields below */
22	fdt32_t boot_cpuid_phys;	 /* Which physical CPU id we're
23					    booting on */
24	/* version 3 fields below */
25	fdt32_t size_dt_strings;	 /* size of the strings block */
26
27	/* version 17 fields below */
28	fdt32_t size_dt_struct;		 /* size of the structure block */
29};
30
31struct fdt_reserve_entry {
32	fdt64_t address;
33	fdt64_t size;
34};
35
36struct fdt_node_header {
37	fdt32_t tag;
38	char name[];
39};
40
41struct fdt_property {
42	fdt32_t tag;
43	fdt32_t len;
44	fdt32_t nameoff;
45	char data[];
46};
47
48#endif /* !__ASSEMBLY */
49
50#define FDT_MAGIC	0xd00dfeed	/* 4: version, 4: total size */
51#define FDT_TAGSIZE	sizeof(fdt32_t)
52
53#define FDT_BEGIN_NODE	0x1		/* Start node: full name */
54#define FDT_END_NODE	0x2		/* End node */
55#define FDT_PROP	0x3		/* Property: name off,
56					   size, content */
57#define FDT_NOP		0x4		/* nop */
58#define FDT_END		0x9
59
60#define FDT_V1_SIZE	(7*sizeof(fdt32_t))
61#define FDT_V2_SIZE	(FDT_V1_SIZE + sizeof(fdt32_t))
62#define FDT_V3_SIZE	(FDT_V2_SIZE + sizeof(fdt32_t))
63#define FDT_V16_SIZE	FDT_V3_SIZE
64#define FDT_V17_SIZE	(FDT_V16_SIZE + sizeof(fdt32_t))
65
66#endif /* FDT_H */
67