optiga_backend_init.c 4.2 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. #include "sdk_config.h"
  42. #if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OPTIGA)
  43. #include "nrf_crypto_init.h"
  44. #include "nrf_crypto_rng.h"
  45. #include "nrf_log.h"
  46. /*lint -save -e????*/
  47. #include "optiga/optiga_util.h"
  48. #include "optiga/ifx_i2c/ifx_i2c.h"
  49. /*lint -restore*/
  50. optiga_comms_t optiga_comms = {(void*)&ifx_i2c_context_0, NULL, NULL};
  51. // need to forward declare these, because they are not exported through the PAL API
  52. void pal_gpio_init(void);
  53. void pal_os_event_init(void);
  54. /*************************************************************************
  55. * functions
  56. *************************************************************************/
  57. static int32_t optiga_init(void)
  58. {
  59. int32_t status = (int32_t) OPTIGA_LIB_ERROR;
  60. // Initialize PAL
  61. pal_gpio_init();
  62. pal_os_event_init();
  63. status = optiga_util_open_application(&optiga_comms);
  64. if (OPTIGA_LIB_SUCCESS != status)
  65. {
  66. NRF_LOG_INFO("Failure: CmdLib_OpenApplication(): 0x%04X", status);
  67. return status;
  68. }
  69. NRF_LOG_INFO("Success: CmdLib_OpenApplication(): 0x%04X", status);
  70. return OPTIGA_LIB_SUCCESS;
  71. }
  72. /** @internal @brief Function to initialize OPTIGA backend - open the application.
  73. */
  74. static ret_code_t optiga_backend_init(void)
  75. {
  76. if(optiga_init() != OPTIGA_LIB_SUCCESS)
  77. {
  78. return NRF_ERROR_INTERNAL;
  79. }
  80. #if defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 1)
  81. ret_code_t ret_val;
  82. ret_val = nrf_crypto_rng_init(NULL, NULL);
  83. return ret_val;
  84. #elif defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 0)
  85. return NRF_SUCCESS;
  86. #else
  87. #warning NRF_CRYPTO_RNG_AUTO_INIT_ENABLED define not found in sdk_config.h (Is the sdk_config.h valid?).
  88. #endif // NRF_CRYPTO_RNG_AUTO_INIT_ENABLED
  89. }
  90. /** @internal @brief Function to uninitialize OPTIGA backend - currently no implementation is required.
  91. */
  92. static ret_code_t optiga_backend_uninit(void)
  93. {
  94. // Empty implementation
  95. return NRF_SUCCESS;
  96. }
  97. CRYPTO_BACKEND_REGISTER(nrf_crypto_backend_info_t const optiga_backend) =
  98. {
  99. .init_fn = optiga_backend_init,
  100. .uninit_fn = optiga_backend_uninit,
  101. };
  102. #endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_OPTIGA)