cc310_bl_backend_init.c 3.7 KB

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  1. /**
  2. * Copyright (c) 2018 - 2020, Nordic Semiconductor ASA
  3. *
  4. * All rights reserved.
  5. *
  6. * Redistribution and use in source and binary forms, with or without modification,
  7. * are permitted provided that the following conditions are met:
  8. *
  9. * 1. Redistributions of source code must retain the above copyright notice, this
  10. * list of conditions and the following disclaimer.
  11. *
  12. * 2. Redistributions in binary form, except as embedded into a Nordic
  13. * Semiconductor ASA integrated circuit in a product or a software update for
  14. * such product, must reproduce the above copyright notice, this list of
  15. * conditions and the following disclaimer in the documentation and/or other
  16. * materials provided with the distribution.
  17. *
  18. * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
  19. * contributors may be used to endorse or promote products derived from this
  20. * software without specific prior written permission.
  21. *
  22. * 4. This software, with or without modification, must only be used with a
  23. * Nordic Semiconductor ASA integrated circuit.
  24. *
  25. * 5. Any software provided in binary form under this license must not be reverse
  26. * engineered, decompiled, modified and/or disassembled.
  27. *
  28. * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
  29. * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  30. * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
  31. * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
  32. * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  33. * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  34. * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  37. * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  38. *
  39. */
  40. #include "sdk_common.h"
  41. #if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL)
  42. #include "nrf.h"
  43. #include "nrf_crypto_init.h"
  44. #include "nrf_crypto_error.h"
  45. #include "cc310_bl_backend_shared.h"
  46. #include "cc310_backend_mutex.h"
  47. #include "sns_silib.h"
  48. #include "nrf_cc310_bl_init.h"
  49. /**@brief Mutex to ensure single access to nrf_cc310_bl resources */
  50. nrf_mtx_t g_cc310_mutex;
  51. static uint32_t init_result_get(uint32_t crys_error)
  52. {
  53. uint32_t ret_val = NRF_ERROR_INTERNAL;
  54. switch (crys_error)
  55. {
  56. case SA_SILIB_RET_OK:
  57. ret_val = NRF_SUCCESS;
  58. break;
  59. case SA_SILIB_RET_EINVAL_HW_VERSION:
  60. ret_val = NRF_ERROR_CRYPTO_FEATURE_UNAVAILABLE;
  61. break;
  62. default:
  63. ret_val = NRF_ERROR_INTERNAL;
  64. break;
  65. }
  66. return ret_val;
  67. }
  68. static ret_code_t cc310_bl_backend_init(void)
  69. {
  70. uint32_t ret_val;
  71. CRYSError_t crys_error;
  72. cc310_backend_mutex_init();
  73. // Enable the CC310 HW.
  74. NRF_CRYPTOCELL->ENABLE = 1;
  75. // Initialize the CC310_BL run-time library
  76. crys_error = nrf_cc310_bl_init();
  77. // Disable the CC310 HW after initialization.
  78. NRF_CRYPTOCELL->ENABLE = 0;
  79. ret_val = init_result_get(crys_error);
  80. return ret_val;
  81. }
  82. static ret_code_t cc310_bl_backend_uninit(void)
  83. {
  84. // Disable the CC310 HW.
  85. NRF_CRYPTOCELL->ENABLE = 0;
  86. return NRF_SUCCESS;
  87. }
  88. CRYPTO_BACKEND_REGISTER(nrf_crypto_backend_info_t const cc310_bl_backend) =
  89. {
  90. .init_fn = cc310_bl_backend_init,
  91. .uninit_fn = cc310_bl_backend_uninit
  92. };
  93. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310_BL)