1 /* SPDX-License-Identifier: (GPL-2.0-or-later <<
2 #ifndef FDT_H 1 #ifndef FDT_H
3 #define FDT_H 2 #define FDT_H
4 /* 3 /*
5 * libfdt - Flat Device Tree manipulation 4 * libfdt - Flat Device Tree manipulation
6 * Copyright (C) 2006 David Gibson, IBM Corpor 5 * Copyright (C) 2006 David Gibson, IBM Corporation.
7 * Copyright 2012 Kim Phillips, Freescale Semi 6 * Copyright 2012 Kim Phillips, Freescale Semiconductor.
>> 7 *
>> 8 * libfdt is dual licensed: you can use it either under the terms of
>> 9 * the GPL, or the BSD license, at your option.
>> 10 *
>> 11 * a) This library is free software; you can redistribute it and/or
>> 12 * modify it under the terms of the GNU General Public License as
>> 13 * published by the Free Software Foundation; either version 2 of the
>> 14 * License, or (at your option) any later version.
>> 15 *
>> 16 * This library is distributed in the hope that it will be useful,
>> 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
>> 19 * GNU General Public License for more details.
>> 20 *
>> 21 * You should have received a copy of the GNU General Public
>> 22 * License along with this library; if not, write to the Free
>> 23 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
>> 24 * MA 02110-1301 USA
>> 25 *
>> 26 * Alternatively,
>> 27 *
>> 28 * b) Redistribution and use in source and binary forms, with or
>> 29 * without modification, are permitted provided that the following
>> 30 * conditions are met:
>> 31 *
>> 32 * 1. Redistributions of source code must retain the above
>> 33 * copyright notice, this list of conditions and the following
>> 34 * disclaimer.
>> 35 * 2. Redistributions in binary form must reproduce the above
>> 36 * copyright notice, this list of conditions and the following
>> 37 * disclaimer in the documentation and/or other materials
>> 38 * provided with the distribution.
>> 39 *
>> 40 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
>> 41 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
>> 42 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
>> 43 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
>> 44 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
>> 45 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
>> 46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
>> 47 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
>> 48 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
>> 49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
>> 50 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
>> 51 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
>> 52 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
8 */ 53 */
9 54
10 #ifndef __ASSEMBLY__ 55 #ifndef __ASSEMBLY__
11 56
12 struct fdt_header { 57 struct fdt_header {
13 fdt32_t magic; /* ma 58 fdt32_t magic; /* magic word FDT_MAGIC */
14 fdt32_t totalsize; /* to 59 fdt32_t totalsize; /* total size of DT block */
15 fdt32_t off_dt_struct; /* of 60 fdt32_t off_dt_struct; /* offset to structure */
16 fdt32_t off_dt_strings; /* of 61 fdt32_t off_dt_strings; /* offset to strings */
17 fdt32_t off_mem_rsvmap; /* of 62 fdt32_t off_mem_rsvmap; /* offset to memory reserve map */
18 fdt32_t version; /* fo 63 fdt32_t version; /* format version */
19 fdt32_t last_comp_version; /* la 64 fdt32_t last_comp_version; /* last compatible version */
20 65
21 /* version 2 fields below */ 66 /* version 2 fields below */
22 fdt32_t boot_cpuid_phys; /* Wh 67 fdt32_t boot_cpuid_phys; /* Which physical CPU id we're
23 bo 68 booting on */
24 /* version 3 fields below */ 69 /* version 3 fields below */
25 fdt32_t size_dt_strings; /* si 70 fdt32_t size_dt_strings; /* size of the strings block */
26 71
27 /* version 17 fields below */ 72 /* version 17 fields below */
28 fdt32_t size_dt_struct; /* si 73 fdt32_t size_dt_struct; /* size of the structure block */
29 }; 74 };
30 75
31 struct fdt_reserve_entry { 76 struct fdt_reserve_entry {
32 fdt64_t address; 77 fdt64_t address;
33 fdt64_t size; 78 fdt64_t size;
34 }; 79 };
35 80
36 struct fdt_node_header { 81 struct fdt_node_header {
37 fdt32_t tag; 82 fdt32_t tag;
38 char name[]; !! 83 char name[0];
39 }; 84 };
40 85
41 struct fdt_property { 86 struct fdt_property {
42 fdt32_t tag; 87 fdt32_t tag;
43 fdt32_t len; 88 fdt32_t len;
44 fdt32_t nameoff; 89 fdt32_t nameoff;
45 char data[]; !! 90 char data[0];
46 }; 91 };
47 92
48 #endif /* !__ASSEMBLY */ 93 #endif /* !__ASSEMBLY */
49 94
50 #define FDT_MAGIC 0xd00dfeed /* 4: 95 #define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */
51 #define FDT_TAGSIZE sizeof(fdt32_t) 96 #define FDT_TAGSIZE sizeof(fdt32_t)
52 97
53 #define FDT_BEGIN_NODE 0x1 /* Sta 98 #define FDT_BEGIN_NODE 0x1 /* Start node: full name */
54 #define FDT_END_NODE 0x2 /* End 99 #define FDT_END_NODE 0x2 /* End node */
55 #define FDT_PROP 0x3 /* Pro 100 #define FDT_PROP 0x3 /* Property: name off,
56 siz 101 size, content */
57 #define FDT_NOP 0x4 /* nop 102 #define FDT_NOP 0x4 /* nop */
58 #define FDT_END 0x9 103 #define FDT_END 0x9
59 104
60 #define FDT_V1_SIZE (7*sizeof(fdt32_t)) 105 #define FDT_V1_SIZE (7*sizeof(fdt32_t))
61 #define FDT_V2_SIZE (FDT_V1_SIZE + sizeof( 106 #define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t))
62 #define FDT_V3_SIZE (FDT_V2_SIZE + sizeof( 107 #define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t))
63 #define FDT_V16_SIZE FDT_V3_SIZE 108 #define FDT_V16_SIZE FDT_V3_SIZE
64 #define FDT_V17_SIZE (FDT_V16_SIZE + sizeof 109 #define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t))
65 110
66 #endif /* FDT_H */ 111 #endif /* FDT_H */
67 112
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