1 /* 2 * Copyright (c) 2018-2021, Arm Limited. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 */ 7 8 #ifndef __PS_NV_COUNTERS_H__ 9 #define __PS_NV_COUNTERS_H__ 10 11 /* NOTE: This API abstracts PS NV counters operations. This API detaches the 12 * use of NV counters from the TF-M NV counters implementation, provided 13 * by the platform, and provides a mechanism to compile in a different 14 * API implementation for test purposes. A PS test suite may provide 15 * its own custom implementation to be able to test different PS service 16 * use cases. 17 */ 18 19 #include <stdint.h> 20 #include "psa/protected_storage.h" 21 #include "tfm_plat_nv_counters.h" 22 23 #define TFM_PS_NV_COUNTER_1 PLAT_NV_COUNTER_PS_0 24 #define TFM_PS_NV_COUNTER_2 PLAT_NV_COUNTER_PS_1 25 #define TFM_PS_NV_COUNTER_3 PLAT_NV_COUNTER_PS_2 26 27 #define PS_NV_COUNTER_SIZE 4 /* In bytes */ 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 /** 34 * \brief Reads the given non-volatile (NV) counter. 35 * 36 * \param[in] counter_id NV counter ID. 37 * \param[out] val Pointer to store the current NV counter value. 38 * 39 * \return PSA_SUCCESS if the value is read correctly, otherwise 40 * PSA_ERROR_GENERIC_ERROR 41 */ 42 psa_status_t ps_read_nv_counter(enum tfm_nv_counter_t counter_id, 43 uint32_t *val); 44 45 /** 46 * \brief Increments the given non-volatile (NV) counter. 47 * 48 * \param[in] counter_id NV counter ID. 49 * 50 * \return If the counter is incremented correctly, it returns 51 * PSA_SUCCESS. Otherwise, PSA_ERROR_GENERIC_ERROR. 52 */ 53 psa_status_t ps_increment_nv_counter(enum tfm_nv_counter_t counter_id); 54 55 #ifdef __cplusplus 56 } 57 #endif 58 59 #endif /* __PS_NV_COUNTERS_H__ */ 60
