LXR linux/scripts/dtc/libfdt/libfdt

   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
  65int _fdt_check_node_offset(const void *fdt, int offset);
  66int _fdt_check_prop_offset(const void *fdt, int offset);
  67const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
  68int _fdt_node_end_offset(void *fdt, int nodeoffset);
  69
  70static 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
  75static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
  76{
  77        return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
  78}
  79
  80static 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}
  88static 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