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269 lines
9.0 KiB
269 lines
9.0 KiB
/*
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* Copyright (c) 2018 - 2019, Nordic Semiconductor ASA
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef NRF_KMU_H__
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#define NRF_KMU_H__
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#include <nrfx.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @defgroup nrf_kmu_hal KMU HAL
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* @{
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* @ingroup nrf_kmu
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* @brief Hardware access layer for managing the Key Management Unit (KMU) peripheral.
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*/
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/** @brief KMU tasks. */
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typedef enum
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{
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NRF_KMU_TASK_PUSH_KEYSLOT = offsetof(NRF_KMU_Type, TASKS_PUSH_KEYSLOT), ///< Push a key slot over secure APB.
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} nrf_kmu_task_t;
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/** @brief KMU events. */
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typedef enum
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{
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NRF_KMU_EVENT_KEYSLOT_PUSHED = offsetof(NRF_KMU_Type, EVENTS_KEYSLOT_PUSHED), ///< Key successfully pushed over secure APB.
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NRF_KMU_EVENT_KEYSLOT_REVOKED = offsetof(NRF_KMU_Type, EVENTS_KEYSLOT_REVOKED), ///< Key has been revoked and cannot be tasked for selection.
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NRF_KMU_EVENT_KEYSLOT_ERROR = offsetof(NRF_KMU_Type, EVENTS_KEYSLOT_ERROR) ///< No key slot selected or no destination address defined or error during push mechanism.
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} nrf_kmu_event_t;
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/** @brief KMU interrupts. */
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typedef enum
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{
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NRF_KMU_INT_PUSHED_MASK = KMU_INTEN_KEYSLOT_PUSHED_Msk, ///< Interrupt on KEYSLOT_PUSHED event.
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NRF_KMU_INT_REVOKED_MASK = KMU_INTEN_KEYSLOT_REVOKED_Msk, ///< Interrupt on KEYSLOT_REVOKED event.
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NRF_KMU_INT_ERROR_MASK = KMU_INTEN_KEYSLOT_ERROR_Msk ///< Interrupt on KEYSLOT_ERROR event.
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} nrf_kmu_int_mask_t;
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/** @brief KMU operation status. */
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typedef enum
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{
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NRF_KMU_STATUS_BLOCKED_MASK = KMU_STATUS_BLOCKED_Msk, ///< Access violation detected and blocked.
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NRF_KMU_STATUS_SELECTED_MASK = KMU_STATUS_SELECTED_Msk, ///< Key slot ID successfully selected by KMU
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} nrf_kmu_status_t;
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/**
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* @brief Function for activating a specific KMU task.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] task Task to be activated.
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*/
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__STATIC_INLINE void nrf_kmu_task_trigger(NRF_KMU_Type * p_reg, nrf_kmu_task_t task);
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/**
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* @brief Function for getting the address of a specific KMU task register.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] task Requested task.
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*
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* @return Address of the specified task register.
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*/
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__STATIC_INLINE uint32_t nrf_kmu_task_address_get(NRF_KMU_Type const * p_reg, nrf_kmu_task_t task);
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/**
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* @brief Function for clearing a specific KMU event.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] event Event to clear.
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*/
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__STATIC_INLINE void nrf_kmu_event_clear(NRF_KMU_Type * p_reg, nrf_kmu_event_t event);
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/**
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* @brief Function for retrieving the state of the KMU event.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] event Event to be checked.
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*
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* @retval true The event has been generated.
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* @retval false The event has not been generated.
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*/
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__STATIC_INLINE bool nrf_kmu_event_check(NRF_KMU_Type const * p_reg, nrf_kmu_event_t event);
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/**
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* @brief Function for getting the address of a specific KMU event register.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] event Requested event.
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*
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* @return Address of the specified event register.
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*/
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__STATIC_INLINE uint32_t nrf_kmu_event_address_get(NRF_KMU_Type const * p_reg,
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nrf_kmu_event_t event);
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/**
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* @brief Function for enabling specified interrupts.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] mask Interrupts to be enabled.
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*/
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__STATIC_INLINE void nrf_kmu_int_enable(NRF_KMU_Type * p_reg, uint32_t mask);
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/**
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* @brief Function for disabling specified interrupts.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] mask Interrupts to be disabled.
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*/
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__STATIC_INLINE void nrf_kmu_int_disable(NRF_KMU_Type * p_reg, uint32_t mask);
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/**
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* @brief Function for retrieving the state of a given interrupt.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] kmu_int Interrupt to be checked.
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*
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* @retval true The interrupt is enabled.
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* @retval false The interrupt is not enabled.
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*/
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__STATIC_INLINE bool nrf_kmu_int_enable_check(NRF_KMU_Type const * p_reg,
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nrf_kmu_int_mask_t kmu_int);
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/**
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* @brief Function for retrieving the state of interrupts.
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*
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* Function returns bitmask. Please use @ref nrf_kmu_int_mask_t to check interrupts status.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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*
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* @return Bitmask with pending interrupts bits.
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*/
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__STATIC_INLINE uint32_t nrf_kmu_intpend_get(NRF_KMU_Type const * p_reg);
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/**
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* @brief Function for getting status bits of the KMU operation.
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*
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* Function returns bitmask. Please use @ref nrf_kmu_status_t to check operations status.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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*
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* @return Bitmask with operation status bits.
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*/
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__STATIC_INLINE uint32_t nrf_kmu_status_get(NRF_KMU_Type const * p_reg);
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/**
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* @brief Function for selecting the key slot ID.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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* @param[in] keyslot_id Key slot ID to be read over AHB or pushed over
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* secure APB when TASKS_PUSH_KEYSLOT is started.
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*/
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__STATIC_INLINE void nrf_kmu_keyslot_set(NRF_KMU_Type * p_reg, uint8_t keyslot_id);
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/**
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* @brief Function for getting the key slot ID.
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*
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* @param[in] p_reg Pointer to the structure of registers of the peripheral.
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*
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* @return Key slot ID.
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*/
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__STATIC_INLINE uint8_t nrf_kmu_keyslot_get(NRF_KMU_Type const * p_reg);
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#ifndef SUPPRESS_INLINE_IMPLEMENTATION
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__STATIC_INLINE void nrf_kmu_task_trigger(NRF_KMU_Type * p_reg, nrf_kmu_task_t task)
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{
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*((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)task)) = 0x1UL;
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}
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__STATIC_INLINE uint32_t nrf_kmu_task_address_get(NRF_KMU_Type const * p_reg, nrf_kmu_task_t task)
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{
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return ((uint32_t)p_reg + (uint32_t)task);
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}
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__STATIC_INLINE void nrf_kmu_event_clear(NRF_KMU_Type * p_reg, nrf_kmu_event_t event)
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{
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*((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event)) = 0x0UL;
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volatile uint32_t dummy = *((volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event));
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(void)dummy;
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}
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__STATIC_INLINE bool nrf_kmu_event_check(NRF_KMU_Type const * p_reg, nrf_kmu_event_t event)
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{
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return (bool)*(volatile uint32_t *)((uint8_t *)p_reg + (uint32_t)event);
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}
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__STATIC_INLINE uint32_t nrf_kmu_event_address_get(NRF_KMU_Type const * p_reg,
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nrf_kmu_event_t event)
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{
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return ((uint32_t)p_reg + (uint32_t)event);
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}
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__STATIC_INLINE void nrf_kmu_int_enable(NRF_KMU_Type * p_reg, uint32_t mask)
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{
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p_reg->INTENSET = mask;
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}
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__STATIC_INLINE void nrf_kmu_int_disable(NRF_KMU_Type * p_reg, uint32_t mask)
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{
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p_reg->INTENCLR = mask;
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}
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__STATIC_INLINE bool nrf_kmu_int_enable_check(NRF_KMU_Type const * p_reg,
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nrf_kmu_int_mask_t kmu_int)
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{
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return (bool)(p_reg->INTENSET & kmu_int);
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}
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__STATIC_INLINE uint32_t nrf_kmu_intpend_get(NRF_KMU_Type const * p_reg)
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{
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return p_reg->INTPEND;
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}
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__STATIC_INLINE uint32_t nrf_kmu_status_get(NRF_KMU_Type const * p_reg)
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{
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return p_reg->STATUS;
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}
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__STATIC_INLINE void nrf_kmu_keyslot_set(NRF_KMU_Type * p_reg, uint8_t keyslot_id)
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{
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p_reg->SELECTKEYSLOT = (uint32_t) keyslot_id;
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}
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__STATIC_INLINE uint8_t nrf_kmu_keyslot_get(NRF_KMU_Type const * p_reg)
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{
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return (uint8_t) p_reg->SELECTKEYSLOT;
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}
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#endif // SUPPRESS_INLINE_IMPLEMENTATION
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif // NRF_KMU_H__
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