1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright (c) 2018-2025, STMicroelectronics 4 */ 5 6 #ifndef __DRIVERS_STM32_RTC_H__ 7 #define __DRIVERS_STM32_RTC_H__ 8 9 #include <drivers/rtc.h> 10 #include <stdbool.h> 11 #include <tee_api_types.h> 12 13 #if defined(CFG_STM32_RTC) 14 /** 15 * stm32_rtc_set_tamper_timestamp() - Enable tamper and secure timestamp access 16 * in RTC 17 */ 18 TEE_Result stm32_rtc_set_tamper_timestamp(void); 19 20 /** 21 * stm32_rtc_is_timestamp_enabled() - Indicates if RTC timestamping is enabled 22 * 23 * @ret: [Out] True if and only if RTC timestamp is enabled 24 */ 25 TEE_Result stm32_rtc_is_timestamp_enabled(bool *ret); 26 27 /** 28 * stm32_rtc_get_timestamp() - Get RTC timestamp for current time. This function 29 * can be called from an interruption context 30 * 31 * @tm: [Out] RTC timestamp value 32 */ 33 TEE_Result stm32_rtc_get_timestamp(struct optee_rtc_time *tm); 34 35 /** 36 * stm32_rtc_driver_is_initialized() - Indicates if RTC driver is initialized 37 * 38 * Returns TEE_ERROR_DEFER_DRIVER_INIT if it's not the case, TEE_SUCCESS 39 * otherwise 40 */ 41 TEE_Result stm32_rtc_driver_is_initialized(void); 42 #else /* CFG_STM32_RTC */ 43 static inline TEE_Result stm32_rtc_set_tamper_timestamp(void) 44 { 45 return TEE_ERROR_NOT_IMPLEMENTED; 46 } 47 48 static inline TEE_Result stm32_rtc_is_timestamp_enabled(bool *ret __unused) 49 { 50 return TEE_ERROR_NOT_IMPLEMENTED; 51 } 52 53 static inline TEE_Result 54 stm32_rtc_get_timestamp(struct optee_rtc_time *tm __unused) 55 { 56 return TEE_ERROR_NOT_IMPLEMENTED; 57 } 58 59 static inline TEE_Result stm32_rtc_driver_is_initialized(void) 60 { 61 return TEE_ERROR_NOT_IMPLEMENTED; 62 } 63 #endif /* CFG_STM32_RTC */ 64 #endif /* __DRIVERS_STM32_RTC_H__ */ 65