1*4882a593Smuzhiyun #ifndef _FDT_H 2*4882a593Smuzhiyun #define _FDT_H 3*4882a593Smuzhiyun /* 4*4882a593Smuzhiyun * libfdt - Flat Device Tree manipulation 5*4882a593Smuzhiyun * Copyright (C) 2006 David Gibson, IBM Corporation. 6*4882a593Smuzhiyun * Copyright 2012 Kim Phillips, Freescale Semiconductor. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * libfdt is dual licensed: you can use it either under the terms of 9*4882a593Smuzhiyun * the GPL, or the BSD license, at your option. 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * a) This library is free software; you can redistribute it and/or 12*4882a593Smuzhiyun * modify it under the terms of the GNU General Public License as 13*4882a593Smuzhiyun * published by the Free Software Foundation; either version 2 of the 14*4882a593Smuzhiyun * License, or (at your option) any later version. 15*4882a593Smuzhiyun * 16*4882a593Smuzhiyun * This library is distributed in the hope that it will be useful, 17*4882a593Smuzhiyun * but WITHOUT ANY WARRANTY; without even the implied warranty of 18*4882a593Smuzhiyun * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19*4882a593Smuzhiyun * GNU General Public License for more details. 20*4882a593Smuzhiyun * 21*4882a593Smuzhiyun * You should have received a copy of the GNU General Public 22*4882a593Smuzhiyun * License along with this library; if not, write to the Free 23*4882a593Smuzhiyun * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, 24*4882a593Smuzhiyun * MA 02110-1301 USA 25*4882a593Smuzhiyun * 26*4882a593Smuzhiyun * Alternatively, 27*4882a593Smuzhiyun * 28*4882a593Smuzhiyun * b) Redistribution and use in source and binary forms, with or 29*4882a593Smuzhiyun * without modification, are permitted provided that the following 30*4882a593Smuzhiyun * conditions are met: 31*4882a593Smuzhiyun * 32*4882a593Smuzhiyun * 1. Redistributions of source code must retain the above 33*4882a593Smuzhiyun * copyright notice, this list of conditions and the following 34*4882a593Smuzhiyun * disclaimer. 35*4882a593Smuzhiyun * 2. Redistributions in binary form must reproduce the above 36*4882a593Smuzhiyun * copyright notice, this list of conditions and the following 37*4882a593Smuzhiyun * disclaimer in the documentation and/or other materials 38*4882a593Smuzhiyun * provided with the distribution. 39*4882a593Smuzhiyun * 40*4882a593Smuzhiyun * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 41*4882a593Smuzhiyun * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 42*4882a593Smuzhiyun * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 43*4882a593Smuzhiyun * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 44*4882a593Smuzhiyun * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 45*4882a593Smuzhiyun * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46*4882a593Smuzhiyun * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 47*4882a593Smuzhiyun * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 48*4882a593Smuzhiyun * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 49*4882a593Smuzhiyun * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 50*4882a593Smuzhiyun * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 51*4882a593Smuzhiyun * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 52*4882a593Smuzhiyun * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53*4882a593Smuzhiyun */ 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun #ifndef __ASSEMBLY__ 56*4882a593Smuzhiyun 57*4882a593Smuzhiyun struct fdt_header { 58*4882a593Smuzhiyun fdt32_t magic; /* magic word FDT_MAGIC */ 59*4882a593Smuzhiyun fdt32_t totalsize; /* total size of DT block */ 60*4882a593Smuzhiyun fdt32_t off_dt_struct; /* offset to structure */ 61*4882a593Smuzhiyun fdt32_t off_dt_strings; /* offset to strings */ 62*4882a593Smuzhiyun fdt32_t off_mem_rsvmap; /* offset to memory reserve map */ 63*4882a593Smuzhiyun fdt32_t version; /* format version */ 64*4882a593Smuzhiyun fdt32_t last_comp_version; /* last compatible version */ 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun /* version 2 fields below */ 67*4882a593Smuzhiyun fdt32_t boot_cpuid_phys; /* Which physical CPU id we're 68*4882a593Smuzhiyun booting on */ 69*4882a593Smuzhiyun /* version 3 fields below */ 70*4882a593Smuzhiyun fdt32_t size_dt_strings; /* size of the strings block */ 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun /* version 17 fields below */ 73*4882a593Smuzhiyun fdt32_t size_dt_struct; /* size of the structure block */ 74*4882a593Smuzhiyun }; 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun struct fdt_reserve_entry { 77*4882a593Smuzhiyun fdt64_t address; 78*4882a593Smuzhiyun fdt64_t size; 79*4882a593Smuzhiyun }; 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun struct fdt_node_header { 82*4882a593Smuzhiyun fdt32_t tag; 83*4882a593Smuzhiyun char name[0]; 84*4882a593Smuzhiyun }; 85*4882a593Smuzhiyun 86*4882a593Smuzhiyun struct fdt_property { 87*4882a593Smuzhiyun fdt32_t tag; 88*4882a593Smuzhiyun fdt32_t len; 89*4882a593Smuzhiyun fdt32_t nameoff; 90*4882a593Smuzhiyun char data[0]; 91*4882a593Smuzhiyun }; 92*4882a593Smuzhiyun 93*4882a593Smuzhiyun #endif /* !__ASSEMBLY */ 94*4882a593Smuzhiyun 95*4882a593Smuzhiyun #define FDT_MAGIC 0xd00dfeed /* 4: version, 4: total size */ 96*4882a593Smuzhiyun #define FDT_TAGSIZE sizeof(fdt32_t) 97*4882a593Smuzhiyun 98*4882a593Smuzhiyun #define FDT_BEGIN_NODE 0x1 /* Start node: full name */ 99*4882a593Smuzhiyun #define FDT_END_NODE 0x2 /* End node */ 100*4882a593Smuzhiyun #define FDT_PROP 0x3 /* Property: name off, 101*4882a593Smuzhiyun size, content */ 102*4882a593Smuzhiyun #define FDT_NOP 0x4 /* nop */ 103*4882a593Smuzhiyun #define FDT_END 0x9 104*4882a593Smuzhiyun 105*4882a593Smuzhiyun #define FDT_V1_SIZE (7*sizeof(fdt32_t)) 106*4882a593Smuzhiyun #define FDT_V2_SIZE (FDT_V1_SIZE + sizeof(fdt32_t)) 107*4882a593Smuzhiyun #define FDT_V3_SIZE (FDT_V2_SIZE + sizeof(fdt32_t)) 108*4882a593Smuzhiyun #define FDT_V16_SIZE FDT_V3_SIZE 109*4882a593Smuzhiyun #define FDT_V17_SIZE (FDT_V16_SIZE + sizeof(fdt32_t)) 110*4882a593Smuzhiyun 111*4882a593Smuzhiyun #endif /* _FDT_H */ 112