1 /* $NetBSD: libfdt_internal.h,v 1.1.1.2 2017/06/08 15:53:15 skrll Exp $ */ 2 3 #ifndef _LIBFDT_INTERNAL_H 4 #define _LIBFDT_INTERNAL_H 5 /* 6 * libfdt - Flat Device Tree manipulation 7 * Copyright (C) 2006 David Gibson, IBM Corporation. 8 * 9 * libfdt is dual licensed: you can use it either under the terms of 10 * the GPL, or the BSD license, at your option. 11 * 12 * a) This library is free software; you can redistribute it and/or 13 * modify it under the terms of the GNU General Public License as 14 * published by the Free Software Foundation; either version 2 of the 15 * License, or (at your option) any later version. 16 * 17 * This library is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public 23 * License along with this library; if not, write to the Free 24 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, 25 * MA 02110-1301 USA 26 * 27 * Alternatively, 28 * 29 * b) Redistribution and use in source and binary forms, with or 30 * without modification, are permitted provided that the following 31 * conditions are met: 32 * 33 * 1. Redistributions of source code must retain the above 34 * copyright notice, this list of conditions and the following 35 * disclaimer. 36 * 2. Redistributions in binary form must reproduce the above 37 * copyright notice, this list of conditions and the following 38 * disclaimer in the documentation and/or other materials 39 * provided with the distribution. 40 * 41 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 42 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 43 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 44 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 45 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 46 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 47 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 48 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 49 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 52 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 53 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 */ 55 #include <fdt.h> 56 57 #define FDT_ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1)) 58 #define FDT_TAGALIGN(x) (FDT_ALIGN((x), FDT_TAGSIZE)) 59 60 #define FDT_CHECK_HEADER(fdt) \ 61 { \ 62 int __err; \ 63 if ((__err = fdt_check_header(fdt)) != 0) \ 64 return __err; \ 65 } 66 67 int _fdt_check_node_offset(const void *fdt, int offset); 68 int _fdt_check_prop_offset(const void *fdt, int offset); 69 const char *_fdt_find_string(const char *strtab, int tabsize, const char *s); 70 int _fdt_node_end_offset(void *fdt, int nodeoffset); 71 72 static inline const void *_fdt_offset_ptr(const void *fdt, int offset) 73 { 74 return (const char *)fdt + fdt_off_dt_struct(fdt) + offset; 75 } 76 77 static inline void *_fdt_offset_ptr_w(void *fdt, int offset) 78 { 79 return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset); 80 } 81 82 static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n) 83 { 84 const struct fdt_reserve_entry *rsv_table = 85 (const struct fdt_reserve_entry *) 86 ((const char *)fdt + fdt_off_mem_rsvmap(fdt)); 87 88 return rsv_table + n; 89 } 90 static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n) 91 { 92 return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n); 93 } 94 95 #define FDT_SW_MAGIC (~FDT_MAGIC) 96 97 #endif /* _LIBFDT_INTERNAL_H */ 98