1 /* $NetBSD: libfdt_env.h,v 1.3 2017/06/08 15:54:32 skrll Exp $ */ 2 3 #ifndef _LIBFDT_ENV_H 4 #define _LIBFDT_ENV_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 #if defined(_KERNEL) 58 #include <sys/param.h> 59 #include <sys/types.h> 60 #else 61 #include <stddef.h> 62 #include <stdint.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #endif 66 67 #ifdef __CHECKER__ 68 #define FDT_FORCE __attribute__((force)) 69 #define FDT_BITWISE __attribute__((bitwise)) 70 #else 71 #define FDT_FORCE 72 #define FDT_BITWISE 73 #endif 74 75 typedef uint16_t FDT_BITWISE fdt16_t; 76 typedef uint32_t FDT_BITWISE fdt32_t; 77 typedef uint64_t FDT_BITWISE fdt64_t; 78 79 #define EXTRACT_BYTE(x, n) ((unsigned long long)((uint8_t *)&x)[n]) 80 #define CPU_TO_FDT16(x) ((EXTRACT_BYTE(x, 0) << 8) | EXTRACT_BYTE(x, 1)) 81 #define CPU_TO_FDT32(x) ((EXTRACT_BYTE(x, 0) << 24) | (EXTRACT_BYTE(x, 1) << 16) | \ 82 (EXTRACT_BYTE(x, 2) << 8) | EXTRACT_BYTE(x, 3)) 83 #define CPU_TO_FDT64(x) ((EXTRACT_BYTE(x, 0) << 56) | (EXTRACT_BYTE(x, 1) << 48) | \ 84 (EXTRACT_BYTE(x, 2) << 40) | (EXTRACT_BYTE(x, 3) << 32) | \ 85 (EXTRACT_BYTE(x, 4) << 24) | (EXTRACT_BYTE(x, 5) << 16) | \ 86 (EXTRACT_BYTE(x, 6) << 8) | EXTRACT_BYTE(x, 7)) 87 88 static inline uint16_t fdt16_to_cpu(fdt16_t x) 89 { 90 return (FDT_FORCE uint16_t)CPU_TO_FDT16(x); 91 } 92 static inline fdt16_t cpu_to_fdt16(uint16_t x) 93 { 94 return (FDT_FORCE fdt16_t)CPU_TO_FDT16(x); 95 } 96 97 static inline uint32_t fdt32_to_cpu(fdt32_t x) 98 { 99 return (FDT_FORCE uint32_t)CPU_TO_FDT32(x); 100 } 101 static inline fdt32_t cpu_to_fdt32(uint32_t x) 102 { 103 return (FDT_FORCE fdt32_t)CPU_TO_FDT32(x); 104 } 105 106 static inline uint64_t fdt64_to_cpu(fdt64_t x) 107 { 108 return (FDT_FORCE uint64_t)CPU_TO_FDT64(x); 109 } 110 static inline fdt64_t cpu_to_fdt64(uint64_t x) 111 { 112 return (FDT_FORCE fdt64_t)CPU_TO_FDT64(x); 113 } 114 #undef CPU_TO_FDT64 115 #undef CPU_TO_FDT32 116 #undef CPU_TO_FDT16 117 #undef EXTRACT_BYTE 118 119 #endif /* _LIBFDT_ENV_H */ 120