1 /* $NetBSD: fdt.h,v 1.1.1.2 2017/06/08 15:53:11 skrll Exp $ */ 2 3 #ifndef _FDT_H 4 #define _FDT_H 5 /* 6 * libfdt - Flat Device Tree manipulation 7 * Copyright (C) 2006 David Gibson, IBM Corporation. 8 * Copyright 2012 Kim Phillips, Freescale Semiconductor. 9 * 10 * libfdt is dual licensed: you can use it either under the terms of 11 * the GPL, or the BSD license, at your option. 12 * 13 * a) This library is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU General Public License as 15 * published by the Free Software Foundation; either version 2 of the 16 * License, or (at your option) any later version. 17 * 18 * This library is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 * 23 * You should have received a copy of the GNU General Public 24 * License along with this library; if not, write to the Free 25 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, 26 * MA 02110-1301 USA 27 * 28 * Alternatively, 29 * 30 * b) Redistribution and use in source and binary forms, with or 31 * without modification, are permitted provided that the following 32 * conditions are met: 33 * 34 * 1. Redistributions of source code must retain the above 35 * copyright notice, this list of conditions and the following 36 * disclaimer. 37 * 2. Redistributions in binary form must reproduce the above 38 * copyright notice, this list of conditions and the following 39 * disclaimer in the documentation and/or other materials 40 * provided with the distribution. 41 * 42 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 43 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 44 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 45 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 46 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 47 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 49 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 50 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 52 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 53 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 54 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 #ifndef __ASSEMBLY__ 58 59 struct fdt_header { 60 fdt32_t magic; /* magic word FDT_MAGIC */ 61 fdt32_t totalsize; /* total size of DT block */ 62 fdt32_t off_dt_struct; /* offset to structure */ 63 fdt32_t off_dt_strings; /* offset to strings */ 64 fdt32_t off_mem_rsvmap; /* offset to memory reserve map */ 65 fdt32_t version; /* format version */ 66 fdt32_t last_comp_version; /* last compatible version */ 67 68 /* version 2 fields below */ 69 fdt32_t boot_cpuid_phys; /* Which physical CPU id we're 70 booting on */ 71 /* version 3 fields below */ 72 fdt32_t size_dt_strings; /* size of the strings block */ 73 74 /* version 17 fields below */ 75 fdt32_t size_dt_struct; /* size of the structure block */ 76 }; 77 78 struct fdt_reserve_entry { 79 fdt64_t address; 80 fdt64_t size; 81 }; 82 83 struct fdt_node_header { 84 fdt32_t tag; 85 char name[0]; 86 }; 87 88 struct fdt_property { 89 fdt32_t tag; 90 fdt32_t len; 91 fdt32_t nameoff; 92 char data[0]; 93 }; 94 95 #endif /* !__ASSEMBLY */ 96 97 #define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */ 98 #define FDT_TAGSIZE sizeof(fdt32_t) 99 100 #define FDT_BEGIN_NODE 0x1 /* Start node: full name */ 101 #define FDT_END_NODE 0x2 /* End node */ 102 #define FDT_PROP 0x3 /* Property: name off, 103 size, content */ 104 #define FDT_NOP 0x4 /* nop */ 105 #define FDT_END 0x9 106 107 #define FDT_V1_SIZE (7*sizeof(fdt32_t)) 108 #define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t)) 109 #define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t)) 110 #define FDT_V16_SIZE FDT_V3_SIZE 111 #define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t)) 112 113 #endif /* _FDT_H */ 114