/* * Copyright (c) 2016, Freescale Semiconductor, Inc. * Copyright 2017-2021, NXP * All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #ifndef _FSL_SNVS_LP_H_ #define _FSL_SNVS_LP_H_ #include "fsl_common.h" /*! * @addtogroup snvs_lp * @{ */ /******************************************************************************* * Definitions ******************************************************************************/ /*! @name Driver version */ /*@{*/ #define FSL_SNVS_LP_DRIVER_VERSION (MAKE_VERSION(2, 4, 3)) /*!< Version 2.4.3 */ /*@}*/ /*! @brief Define of SNVS_LP Zeroizable Master Key registers */ #define SNVS_ZMK_REG_COUNT 8U /* 8 Zeroizable Master Key registers. */ /*! @brief List of SNVS_LP interrupts */ typedef enum _snvs_lp_srtc_interrupts { kSNVS_SRTC_AlarmInterrupt = SNVS_LPCR_LPTA_EN_MASK, /*!< SRTC time alarm.*/ } snvs_lp_srtc_interrupts_t; /*! @brief List of SNVS_LP flags */ typedef enum _snvs_lp_srtc_status_flags { kSNVS_SRTC_AlarmInterruptFlag = SNVS_LPSR_LPTA_MASK, /*!< SRTC time alarm flag */ } snvs_lp_srtc_status_flags_t; #if defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 0) /*! @brief List of SNVS_LP external tampers */ typedef enum _snvs_lp_external_tamper { kSNVS_ExternalTamper1 = 1U, #if defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 1) kSNVS_ExternalTamper2 = 2U, kSNVS_ExternalTamper3 = 3U, kSNVS_ExternalTamper4 = 4U, kSNVS_ExternalTamper5 = 5U, kSNVS_ExternalTamper6 = 6U, kSNVS_ExternalTamper7 = 7U, kSNVS_ExternalTamper8 = 8U, kSNVS_ExternalTamper9 = 9U, kSNVS_ExternalTamper10 = 10U #endif /* defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 1) */ } snvs_lp_external_tamper_t; #endif /* defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 0) */ #if defined(FSL_FEATURE_SNVS_HAS_ACTIVE_TAMPERS) && (FSL_FEATURE_SNVS_HAS_ACTIVE_TAMPERS > 0) /*! @brief List of SNVS_LP active tampers */ typedef enum _snvs_lp_active_tamper { kSNVS_ActiveTamper1 = 1U, kSNVS_ActiveTamper2 = 2U, kSNVS_ActiveTamper3 = 3U, kSNVS_ActiveTamper4 = 4U, kSNVS_ActiveTamper5 = 5U, } snvs_lp_active_tx_tamper_t; /*! @brief List of SNVS_LP external tampers */ typedef enum _snvs_lp_active_clock { kSNVS_ActiveTamper16HZ = 0U, kSNVS_ActiveTamper8HZ = 1U, kSNVS_ActiveTamper4HZ = 2U, kSNVS_ActiveTamper2HZ = 3U } snvs_lp_active_clock_t; /*! @brief Structure is used to configure SNVS LP active TX tamper pins */ typedef struct { uint16_t polynomial; uint16_t seed; snvs_lp_active_clock_t clock; } tamper_active_tx_config_t; /*! @brief Structure is used to configure SNVS LP active RX tamper pins */ typedef struct { uint16_t filterenable; uint8_t filter; snvs_lp_active_tx_tamper_t activeTamper; } tamper_active_rx_config_t; #endif /* FSL_FEATURE_SNVS_HAS_ACTIVE_TAMPERS */ /*! @brief Structure is used to configure SNVS LP passive tamper pins */ typedef struct { uint8_t polarity; #if defined(FSL_FEATURE_SNVS_PASSIVE_TAMPER_FILTER) && (FSL_FEATURE_SNVS_PASSIVE_TAMPER_FILTER > 0) uint8_t filterenable; uint8_t filter; #endif /* FSL_FEATURE_SNVS_PASSIVE_TAMPER_FILTER */ } snvs_lp_passive_tamper_t; /* define max possible tamper present */ /*! @brief Define of SNVS_LP Max possible tamper */ #if defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 1) #define SNVS_LP_MAX_TAMPER kSNVS_ExternalTamper10 #else #define SNVS_LP_MAX_TAMPER kSNVS_ExternalTamper1 #endif /*! @brief List of SNVS_LP external tampers status */ typedef enum _snvs_lp_external_tamper_status { kSNVS_TamperNotDetected = 0U, kSNVS_TamperDetected = 1U } snvs_lp_external_tamper_status_t; /*! @brief SNVS_LP external tamper polarity */ typedef enum _snvs_lp_external_tamper_polarity { kSNVS_ExternalTamperActiveLow = 0U, kSNVS_ExternalTamperActiveHigh = 1U } snvs_lp_external_tamper_polarity_t; /*! @brief Structure is used to hold the date and time */ typedef struct _snvs_lp_srtc_datetime { uint16_t year; /*!< Range from 1970 to 2099.*/ uint8_t month; /*!< Range from 1 to 12.*/ uint8_t day; /*!< Range from 1 to 31 (depending on month).*/ uint8_t hour; /*!< Range from 0 to 23.*/ uint8_t minute; /*!< Range from 0 to 59.*/ uint8_t second; /*!< Range from 0 to 59.*/ } snvs_lp_srtc_datetime_t; /*! * @brief SNVS_LP config structure * * This structure holds the configuration settings for the SNVS_LP peripheral. To initialize this * structure to reasonable defaults, call the SNVS_LP_GetDefaultConfig() function and pass a * pointer to your config structure instance. * * The config struct can be made const so it resides in flash */ typedef struct _snvs_lp_srtc_config { bool srtcCalEnable; /*!< true: SRTC calibration mechanism is enabled; false: No calibration is used */ uint32_t srtcCalValue; /*!< Defines signed calibration value for SRTC; This is a 5-bit 2's complement value, range from -16 to +15 */ } snvs_lp_srtc_config_t; /*! * @brief SNVS_LP Zeroizable Master Key programming mode. */ typedef enum _snvs_lp_zmk_program_mode { kSNVS_ZMKSoftwareProgram, /*!< Software programming mode. */ kSNVS_ZMKHardwareProgram, /*!< Hardware programming mode. */ } snvs_lp_zmk_program_mode_t; /*! * @brief SNVS_LP Master Key mode. */ typedef enum _snvs_lp_master_key_mode { kSNVS_OTPMK = 0, /*!< One Time Programmable Master Key. */ kSNVS_ZMK = 2, /*!< Zeroizable Master Key. */ kSNVS_CMK = 3, /*!< Combined Master Key, it is XOR of OPTMK and ZMK. */ } snvs_lp_master_key_mode_t; /******************************************************************************* * API ******************************************************************************/ #if defined(__cplusplus) extern "C" { #endif /*! * @name Initialization and deinitialization * @{ */ /*! * @brief Ungates the SNVS clock and configures the peripheral for basic operation. * * @note This API should be called at the beginning of the application using the SNVS driver. * * @param base SNVS peripheral base address */ void SNVS_LP_Init(SNVS_Type *base); /*! * @brief Deinit the SNVS LP section. * * @param base SNVS peripheral base address */ void SNVS_LP_Deinit(SNVS_Type *base); /*! @}*/ /*! * @brief Ungates the SNVS clock and configures the peripheral for basic operation. * * @note This API should be called at the beginning of the application using the SNVS driver. * * @param base SNVS peripheral base address * @param config Pointer to the user's SNVS configuration structure. */ void SNVS_LP_SRTC_Init(SNVS_Type *base, const snvs_lp_srtc_config_t *config); /*! * @brief Stops the SRTC timer. * * @param base SNVS peripheral base address */ void SNVS_LP_SRTC_Deinit(SNVS_Type *base); /*! * @brief Fills in the SNVS_LP config struct with the default settings. * * The default values are as follows. * @code * config->srtccalenable = false; * config->srtccalvalue = 0U; * @endcode * @param config Pointer to the user's SNVS configuration structure. */ void SNVS_LP_SRTC_GetDefaultConfig(snvs_lp_srtc_config_t *config); /*! * @name Secure RTC (SRTC) current Time & Alarm * @{ */ /*! * @brief Sets the SNVS SRTC date and time according to the given time structure. * * @param base SNVS peripheral base address * @param datetime Pointer to the structure where the date and time details are stored. * * @return kStatus_Success: Success in setting the time and starting the SNVS SRTC * kStatus_InvalidArgument: Error because the datetime format is incorrect */ status_t SNVS_LP_SRTC_SetDatetime(SNVS_Type *base, const snvs_lp_srtc_datetime_t *datetime); /*! * @brief Gets the SNVS SRTC time and stores it in the given time structure. * * @param base SNVS peripheral base address * @param datetime Pointer to the structure where the date and time details are stored. */ void SNVS_LP_SRTC_GetDatetime(SNVS_Type *base, snvs_lp_srtc_datetime_t *datetime); /*! * @brief Sets the SNVS SRTC alarm time. * * The function sets the SRTC alarm. It also checks whether the specified alarm * time is greater than the present time. If not, the function does not set the alarm * and returns an error. * Please note, that SRTC alarm has limited resolution because only 32 most * significant bits of SRTC counter are compared to SRTC Alarm register. * If the alarm time is beyond SRTC resolution, the function does not set the alarm * and returns an error. * * @param base SNVS peripheral base address * @param alarmTime Pointer to the structure where the alarm time is stored. * * @return kStatus_Success: success in setting the SNVS SRTC alarm * kStatus_InvalidArgument: Error because the alarm datetime format is incorrect * kStatus_Fail: Error because the alarm time has already passed or is beyond resolution */ status_t SNVS_LP_SRTC_SetAlarm(SNVS_Type *base, const snvs_lp_srtc_datetime_t *alarmTime); /*! * @brief Returns the SNVS SRTC alarm time. * * @param base SNVS peripheral base address * @param datetime Pointer to the structure where the alarm date and time details are stored. */ void SNVS_LP_SRTC_GetAlarm(SNVS_Type *base, snvs_lp_srtc_datetime_t *datetime); /*! @}*/ /*! * @name Interrupt Interface * @{ */ /*! * @brief Enables the selected SNVS interrupts. * * @param base SNVS peripheral base address * @param mask The interrupts to enable. This is a logical OR of members of the * enumeration :: _snvs_lp_srtc_interrupts */ static inline void SNVS_LP_SRTC_EnableInterrupts(SNVS_Type *base, uint32_t mask) { base->LPCR |= mask; } /*! * @brief Disables the selected SNVS interrupts. * * @param base SNVS peripheral base address * @param mask The interrupts to enable. This is a logical OR of members of the * enumeration :: _snvs_lp_srtc_interrupts */ static inline void SNVS_LP_SRTC_DisableInterrupts(SNVS_Type *base, uint32_t mask) { base->LPCR &= ~mask; } /*! * @brief Gets the enabled SNVS interrupts. * * @param base SNVS peripheral base address * * @return The enabled interrupts. This is the logical OR of members of the * enumeration :: _snvs_lp_srtc_interrupts */ uint32_t SNVS_LP_SRTC_GetEnabledInterrupts(SNVS_Type *base); /*! @}*/ /*! * @name Status Interface * @{ */ /*! * @brief Gets the SNVS status flags. * * @param base SNVS peripheral base address * * @return The status flags. This is the logical OR of members of the * enumeration :: _snvs_lp_srtc_status_flags */ uint32_t SNVS_LP_SRTC_GetStatusFlags(SNVS_Type *base); /*! * @brief Clears the SNVS status flags. * * @param base SNVS peripheral base address * @param mask The status flags to clear. This is a logical OR of members of the * enumeration :: _snvs_lp_srtc_status_flags */ static inline void SNVS_LP_SRTC_ClearStatusFlags(SNVS_Type *base, uint32_t mask) { base->LPSR |= mask; } /*! @}*/ /*! * @name Timer Start and Stop * @{ */ /*! * @brief Starts the SNVS SRTC time counter. * * @param base SNVS peripheral base address */ static inline void SNVS_LP_SRTC_StartTimer(SNVS_Type *base) { base->LPCR |= SNVS_LPCR_SRTC_ENV_MASK; while ((0U == (base->LPCR & SNVS_LPCR_SRTC_ENV_MASK))) { } } /*! * @brief Stops the SNVS SRTC time counter. * * @param base SNVS peripheral base address */ static inline void SNVS_LP_SRTC_StopTimer(SNVS_Type *base) { base->LPCR &= ~SNVS_LPCR_SRTC_ENV_MASK; while ((base->LPCR & SNVS_LPCR_SRTC_ENV_MASK) != 0U) { } } /*! @}*/ /*! * @name External tampering * @{ */ #if defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 0) /*! * @brief Enables the specified SNVS external tamper. * * @param base SNVS peripheral base address * @param pin SNVS external tamper pin * @param config Configuration structure of external passive tamper */ void SNVS_LP_EnablePassiveTamper(SNVS_Type *base, snvs_lp_external_tamper_t pin, snvs_lp_passive_tamper_t config); #endif /* defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 0) */ #if defined(FSL_FEATURE_SNVS_HAS_ACTIVE_TAMPERS) && (FSL_FEATURE_SNVS_HAS_ACTIVE_TAMPERS > 0) /*! * @brief Enable active tamper tx external pad * * @param base SNVS peripheral base address * @param pin SNVS active tamper pin * @param config Configuration structure of external active tamper */ status_t SNVS_LP_EnableTxActiveTamper(SNVS_Type *base, snvs_lp_active_tx_tamper_t pin, tamper_active_tx_config_t config); /*! * @brief Enable active tamper rx external pad * * @param base SNVS peripheral base address * @param rx SNVS external RX tamper pin * @param config SNVS RX tamper config structure */ status_t SNVS_LP_EnableRxActiveTamper(SNVS_Type *base, snvs_lp_external_tamper_t rx, tamper_active_rx_config_t config); /*! * @brief Sets voltage tamper detect * * @param base SNVS peripheral base address * @param enable True if enable false if disable */ status_t SNVS_LP_SetVoltageTamper(SNVS_Type *base, bool enable); /*! * @brief Sets temperature tamper detect * * @param base SNVS peripheral base address * @param enable True if enable false if disable */ status_t SNVS_LP_SetTemperatureTamper(SNVS_Type *base, bool enable); /*! * @brief Sets clock tamper detect * * @param base SNVS peripheral base address * @param enable True if enable false if disable */ status_t SNVS_LP_SetClockTamper(SNVS_Type *base, bool enable); /*! * brief Check voltage tamper * * param base SNVS peripheral base address */ snvs_lp_external_tamper_status_t SNVS_LP_CheckVoltageTamper(SNVS_Type *base); /*! * @brief Check temperature tamper * * @param base SNVS peripheral base address */ snvs_lp_external_tamper_status_t SNVS_LP_CheckTemperatureTamper(SNVS_Type *base); /*! * brief Check clock tamper * * param base SNVS peripheral base address */ snvs_lp_external_tamper_status_t SNVS_LP_CheckClockTamper(SNVS_Type *base); /*! * @brief Fills in the SNVS tamper pin config struct with the default settings. * * The default values are as follows. * code * config->clock = kSNVS_ActiveTamper16HZ; * config->seed = 0U; * config->polynomial = 0U; * endcode * @param config Pointer to the user's SNVS configuration structure. */ void SNVS_LP_TamperPinTx_GetDefaultConfig(tamper_active_tx_config_t *config); /*! * brief Fills in the SNVS tamper pin config struct with the default settings. * * The default values are as follows. * code * config->filterenable = 0U; * config->filter = 0U; * config->tx = kSNVS_ActiveTamper1; * endcode * param config Pointer to the user's SNVS configuration structure. */ void SNVS_LP_TamperPinRx_GetDefaultConfig(tamper_active_rx_config_t *config); #endif /* defined(FSL_FEATURE_SNVS_HAS_ACTIVE_TAMPERS) && (FSL_FEATURE_SNVS_HAS_ACTIVE_TAMPERS > 0) */ /*! * @brief Fills in the SNVS tamper pin config struct with the default settings. * * The default values are as follows. * code * config->polarity = 0U; * config->filterenable = 0U; if available on SoC * config->filter = 0U; if available on SoC * endcode * @param config Pointer to the user's SNVS configuration structure. */ void SNVS_LP_PassiveTamperPin_GetDefaultConfig(snvs_lp_passive_tamper_t *config); #if defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 0) /*! * @brief Disables the specified SNVS external tamper. * * @param base SNVS peripheral base address * @param pin SNVS external tamper pin */ void SNVS_LP_DisableExternalTamper(SNVS_Type *base, snvs_lp_external_tamper_t pin); /*! * @brief Disable all external tamper. * * @param base SNVS peripheral base address */ void SNVS_LP_DisableAllExternalTamper(SNVS_Type *base); /*! * @brief Returns status of the specified external tamper. * * @param base SNVS peripheral base address * @param pin SNVS external tamper pin * * @return The status flag. This is the enumeration :: _snvs_lp_external_tamper_status */ snvs_lp_external_tamper_status_t SNVS_LP_GetExternalTamperStatus(SNVS_Type *base, snvs_lp_external_tamper_t pin); /*! * @brief Clears status of the specified external tamper. * * @param base SNVS peripheral base address * @param pin SNVS external tamper pin */ void SNVS_LP_ClearExternalTamperStatus(SNVS_Type *base, snvs_lp_external_tamper_t pin); /*! * @brief Clears status of the all external tamper. * * @param base SNVS peripheral base address */ void SNVS_LP_ClearAllExternalTamperStatus(SNVS_Type *base); #endif /* defined(FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER) && (FSL_FEATURE_SNVS_HAS_MULTIPLE_TAMPER > 0) */ /*! @}*/ /*! * @name Monotonic Counter (MC) * @{ */ /*! * @brief Enable or disable the Monotonic Counter. * * @param base SNVS peripheral base address * @param enable Pass true to enable, false to disable. */ static inline void SNVS_LP_EnableMonotonicCounter(SNVS_Type *base, bool enable) { if (enable) { base->LPCR |= SNVS_LPCR_MC_ENV_MASK; } else { base->LPCR &= (~SNVS_LPCR_MC_ENV_MASK); } } /*! * @brief Get the current Monotonic Counter. * * @param base SNVS peripheral base address * @return Current Monotonic Counter value. */ uint64_t SNVS_LP_GetMonotonicCounter(SNVS_Type *base); /*! * @brief Increase the Monotonic Counter. * * Increase the Monotonic Counter by 1. * * @param base SNVS peripheral base address */ static inline void SNVS_LP_IncreaseMonotonicCounter(SNVS_Type *base) { /* Write to the LPSMCLR or LPSMCLR, the counter increases. */ *((volatile uint32_t *)(uint32_t)(&(base->LPSMCLR))) = 0xFFFFFFFFU; } /*! @}*/ /*! * @name Zeroizable Master Key (ZMK) * @{ */ /*! * @brief Write Zeroizable Master Key (ZMK) to the SNVS registers. * * @param base SNVS peripheral base address * @param ZMKey The ZMK write to the SNVS register. */ void SNVS_LP_WriteZeroizableMasterKey(SNVS_Type *base, uint32_t ZMKey[SNVS_ZMK_REG_COUNT]); /*! * @brief Set Zeroizable Master Key valid. * * This API could only be called when using software programming mode. After writing * ZMK using @ref SNVS_LP_WriteZeroizableMasterKey, call this API to make the ZMK * valid. * * @param base SNVS peripheral base address * @param valid Pass true to set valid, false to set invalid. */ static inline void SNVS_LP_SetZeroizableMasterKeyValid(SNVS_Type *base, bool valid) { if (valid) { base->LPMKCR |= SNVS_LPMKCR_ZMK_VAL_MASK; } else { base->LPMKCR &= (~SNVS_LPMKCR_ZMK_VAL_MASK); } } /*! * @brief Get Zeroizable Master Key valid status. * * In hardware programming mode, call this API to check whether the ZMK is valid. * * @param base SNVS peripheral base address * @return true if valid, false if invalid. */ static inline bool SNVS_LP_GetZeroizableMasterKeyValid(SNVS_Type *base) { return (SNVS_LPMKCR_ZMK_VAL_MASK == (base->LPMKCR & SNVS_LPMKCR_ZMK_VAL_MASK)); } /*! * @brief Set Zeroizable Master Key programming mode. * * @param base SNVS peripheral base address * @param mode ZMK programming mode. */ static inline void SNVS_LP_SetZeroizableMasterKeyProgramMode(SNVS_Type *base, snvs_lp_zmk_program_mode_t mode) { if (kSNVS_ZMKSoftwareProgram == mode) { base->LPMKCR &= (~SNVS_LPMKCR_ZMK_HWP_MASK); } else { base->LPMKCR |= SNVS_LPMKCR_ZMK_HWP_MASK; } } /*! * @brief Enable or disable Zeroizable Master Key ECC. * * @param base SNVS peripheral base address * @param enable Pass true to enable, false to disable. */ static inline void SNVS_LP_EnableZeroizableMasterKeyECC(SNVS_Type *base, bool enable) { if (enable) { base->LPMKCR |= SNVS_LPMKCR_ZMK_ECC_EN_MASK; } else { base->LPMKCR &= (~SNVS_LPMKCR_ZMK_ECC_EN_MASK); } } /*! * @brief Set SNVS Master Key mode. * * @param base SNVS peripheral base address * @param mode Master Key mode. * @note When @ref kSNVS_ZMK or @ref kSNVS_CMK used, the SNVS_HP must be configured * to enable the master key selection. */ static inline void SNVS_LP_SetMasterKeyMode(SNVS_Type *base, snvs_lp_master_key_mode_t mode) { uint32_t lpmkcr = base->LPMKCR; lpmkcr = (lpmkcr & (~SNVS_LPMKCR_MASTER_KEY_SEL_MASK)) | SNVS_LPMKCR_MASTER_KEY_SEL(mode); base->LPMKCR = lpmkcr; } #if defined(FSL_FEATURE_SNVS_HAS_STATE_TRANSITION) && (FSL_FEATURE_SNVS_HAS_STATE_TRANSITION > 0) /*! * brief Transition SNVS SSM state to Trusted/Non-secure from Check state * * param base SNVS peripheral base address * * return kStatus_Success: Success in transitioning SSM State * kStatus_Fail: SSM State transition failed */ status_t SNVS_LP_SSM_State_Transition(SNVS_Type *base); #endif /* FSL_FEATURE_SNVS_HAS_STATE_TRANSITION */ /*! @}*/ #if defined(__cplusplus) } #endif /*! @}*/ #endif /* _FSL_SNVS_LP_H_ */