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libfdt_internal.h 3.6 KB

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  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. #define FDT_ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
  55. #define FDT_TAGALIGN(x) (FDT_ALIGN((x), FDT_TAGSIZE))
  56. #define FDT_CHECK_HEADER(fdt) \
  57. { \
  58. int err; \
  59. if ((err = fdt_check_header(fdt)) != 0) \
  60. return err; \
  61. }
  62. int _fdt_check_node_offset(const void *fdt, int offset);
  63. int _fdt_check_prop_offset(const void *fdt, int offset);
  64. const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
  65. int _fdt_node_end_offset(void *fdt, int nodeoffset);
  66. static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
  67. {
  68. return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
  69. }
  70. static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
  71. {
  72. return (void *)(uintptr_t)_fdt_offset_ptr(fdt, offset);
  73. }
  74. static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
  75. {
  76. const struct fdt_reserve_entry *rsv_table =
  77. (const struct fdt_reserve_entry *)
  78. ((const char *)fdt + fdt_off_mem_rsvmap(fdt));
  79. return rsv_table + n;
  80. }
  81. static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
  82. {
  83. return (void *)(uintptr_t)_fdt_mem_rsv(fdt, n);
  84. }
  85. #define FDT_SW_MAGIC (~FDT_MAGIC)
  86. #endif /* _LIBFDT_INTERNAL_H */