libfdt_env.h 2.5 KB

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  1. /* SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause) */
  2. #ifndef LIBFDT_ENV_H
  3. #define LIBFDT_ENV_H
  4. /*
  5. * libfdt - Flat Device Tree manipulation
  6. * Copyright (C) 2006 David Gibson, IBM Corporation.
  7. * Copyright 2012 Kim Phillips, Freescale Semiconductor.
  8. */
  9. #include <sbi/sbi_string.h>
  10. #include <sbi/sbi_types.h>
  11. #include <sbi/sbi_byteorder.h>
  12. #define INT_MAX ((int)(~0U >> 1))
  13. #define UINT_MAX ((unsigned int)~0U)
  14. #define INT32_MAX INT_MAX
  15. #define UINT32_MAX UINT_MAX
  16. #ifdef __CHECKER__
  17. #define FDT_FORCE __attribute__((force))
  18. #define FDT_BITWISE __attribute__((bitwise))
  19. #else
  20. #define FDT_FORCE
  21. #define FDT_BITWISE
  22. #endif
  23. #define memmove sbi_memmove
  24. #define memcpy sbi_memcpy
  25. #define memcmp sbi_memcmp
  26. #define memchr sbi_memchr
  27. #define memset sbi_memset
  28. #define strchr sbi_strchr
  29. #define strrchr sbi_strrchr
  30. #define strcpy sbi_strcpy
  31. #define strncpy sbi_strncpy
  32. #define strcmp sbi_strcmp
  33. #define strncmp sbi_strncmp
  34. #define strlen sbi_strlen
  35. #define strnlen sbi_strnlen
  36. typedef be16_t FDT_BITWISE fdt16_t;
  37. typedef be32_t FDT_BITWISE fdt32_t;
  38. typedef be64_t FDT_BITWISE fdt64_t;
  39. static inline uint16_t fdt16_to_cpu(fdt16_t x)
  40. {
  41. return (FDT_FORCE uint16_t)be16_to_cpu(x);
  42. }
  43. static inline fdt16_t cpu_to_fdt16(uint16_t x)
  44. {
  45. return (FDT_FORCE fdt16_t)cpu_to_be16(x);
  46. }
  47. static inline uint32_t fdt32_to_cpu(fdt32_t x)
  48. {
  49. return (FDT_FORCE uint32_t)be32_to_cpu(x);
  50. }
  51. static inline fdt32_t cpu_to_fdt32(uint32_t x)
  52. {
  53. return (FDT_FORCE fdt32_t)cpu_to_be32(x);
  54. }
  55. static inline uint64_t fdt64_to_cpu(fdt64_t x)
  56. {
  57. return (FDT_FORCE uint64_t)be64_to_cpu(x);
  58. }
  59. static inline fdt64_t cpu_to_fdt64(uint64_t x)
  60. {
  61. return (FDT_FORCE fdt64_t)cpu_to_be64(x);
  62. }
  63. #ifdef __APPLE__
  64. #include <AvailabilityMacros.h>
  65. /* strnlen() is not available on Mac OS < 10.7 */
  66. # if !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED < \
  67. MAC_OS_X_VERSION_10_7)
  68. #define strnlen fdt_strnlen
  69. /*
  70. * fdt_strnlen: returns the length of a string or max_count - which ever is
  71. * smallest.
  72. * Input 1 string: the string whose size is to be determined
  73. * Input 2 max_count: the maximum value returned by this function
  74. * Output: length of the string or max_count (the smallest of the two)
  75. */
  76. static inline size_t fdt_strnlen(const char *string, size_t max_count)
  77. {
  78. const char *p = memchr(string, 0, max_count);
  79. return p ? p - string : max_count;
  80. }
  81. #endif /* !defined(MAC_OS_X_VERSION_10_7) || (MAC_OS_X_VERSION_MAX_ALLOWED <
  82. MAC_OS_X_VERSION_10_7) */
  83. #endif /* __APPLE__ */
  84. #endif /* LIBFDT_ENV_H */