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