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