225 lines
7.4 KiB
C
225 lines
7.4 KiB
C
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/*
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* Copyright 2017 NXP
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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 modification,
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* are permitted provided that the following conditions are met:
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*
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* o Redistributions of source code must retain the above copyright notice, this list
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* of conditions and the following disclaimer.
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*
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* o Redistributions in binary form must reproduce the above copyright notice, this
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* list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* o 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" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _FSL_BEE_H_
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#define _FSL_BEE_H_
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#include "fsl_common.h"
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/*******************************************************************************
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* Definitions
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*******************************************************************************/
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/*! @name Driver version */
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/*@{*/
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/*! @brief BEE driver version. Version 2.0.0.
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*
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* Current version: 2.0.0
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*
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* Change log:
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* - Version 2.0.0
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* - Initial version
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*/
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#define FSL_BEE_DRIVER_VERSION (MAKE_VERSION(2, 0, 0))
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/*@}*/
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typedef enum _bee_aes_mode
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{
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kBEE_AesEcbMode = 0U, /*!< AES ECB Mode */
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kBEE_AesCtrMode = 1U /*!< AES CTR Mode */
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} bee_aes_mode_t;
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typedef enum _bee_region
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{
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kBEE_Region0 = 0U, /*!< BEE region 0 */
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kBEE_Region1 = 1U /*!< BEE region 1 */
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} bee_region_t;
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typedef enum _bee_region_enable
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{
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kBEE_RegionDisabled = 0U, /*!< BEE region disabled */
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kBEE_RegionEnabled = 1U /*!< BEE region enabled */
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} bee_region_enable_t;
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typedef enum _bee_status_flags
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{
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kBEE_DisableAbortFlag = 1U, /*!< Disable abort flag. */
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kBEE_Reg0ReadSecViolation = 2U, /*!< Region-0 read channel security violation */
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kBEE_ReadIllegalAccess = 4U, /*!< Read channel illegal access detected */
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kBEE_Reg1ReadSecViolation = 8U, /*!< Region-1 read channel security violation */
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kBEE_Reg0AccessViolation = 16U, /*!< Protected region-0 access violation */
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kBEE_Reg1AccessViolation = 32U, /*!< Protected region-1 access violation */
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kBEE_IdleFlag = BEE_STATUS_BEE_IDLE_MASK /*!< Idle flag */
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} bee_status_flags_t;
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/*! @brief BEE region configuration structure. */
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typedef struct _bee_region_config
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{
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bee_aes_mode_t mode; /*!< AES mode used for encryption/decryption */
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uint32_t regionBot; /*!< Region bottom address */
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uint32_t regionTop; /*!< Region top address */
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uint32_t addrOffset; /*!< Region address offset */
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bee_region_enable_t regionEn; /*!< Region enable/disable */
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} bee_region_config_t;
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/*******************************************************************************
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* API
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******************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/*!
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* @brief Resets BEE module to factory default values.
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*
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* This function performs hardware reset of BEE module. Attributes and keys from software for both regions are cleared.
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*
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* @param base BEE peripheral address.
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*/
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void BEE_Init(BEE_Type *base);
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/*!
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* @brief Resets BEE module, clears keys for both regions and disables clock to the BEE.
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*
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* This function performs hardware reset of BEE module and disables clocks. Attributes and keys from software for both
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* regions are cleared.
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*
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* @param base BEE peripheral address.
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*/
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void BEE_Deinit(BEE_Type *base);
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/*!
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* @brief Enables BEE decryption.
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*
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* This function enables decryption using BEE.
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*
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* @param base BEE peripheral address.
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*/
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static inline void BEE_Enable(BEE_Type *base)
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{
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base->CTRL |= BEE_CTRL_BEE_ENABLE_MASK | BEE_CTRL_KEY_VALID_MASK;
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}
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/*!
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* @brief Disables BEE decryption.
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*
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* This function disables decryption using BEE.
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*
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* @param base BEE peripheral address.
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*/
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static inline void BEE_Disable(BEE_Type *base)
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{
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base->CTRL &= ~BEE_CTRL_BEE_ENABLE_MASK | BEE_CTRL_KEY_VALID_MASK;
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}
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/*!
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* @brief Loads default values to the BEE region configuration structure.
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*
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* Loads default values to the BEE region configuration structure. The default values are as follows:
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* @code
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* config->mode = kBEE_AesCbcMode;
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* config->regionBot = 0U;
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* config->regionTop = 0U;
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* config->addrOffset = 0xF0000000U;
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* config->regionEn = kBEE_RegionDisabled;
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* @endcode
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*
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* @param config Configuration structure for BEE region.
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*/
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void BEE_GetDefaultConfig(bee_region_config_t *config);
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/*!
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* @brief Sets BEE region configuration.
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*
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* This function sets BEE region settings accorging to given configuration structure.
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*
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* @param base BEE peripheral address.
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* @param region Selection of the BEE region to be configured.
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* @param config Configuration structure for BEE region.
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*/
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status_t BEE_SetRegionConfig(BEE_Type *base, bee_region_t region, const bee_region_config_t *config);
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/*!
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* @brief Loads the AES key and nonce for selected region into BEE key registers.
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*
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* This function loads given AES key and nonce(only AES CTR mode) to BEE register for the given region.
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*
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* Please note, that eFuse BEE_KEYx_SEL must be set accordingly to be able to load and use key loaded in BEE registers.
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* Otherwise, key cannot loaded and BEE will use key from OTPMK or SW_GP2.
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*
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* @param base BEE peripheral address.
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* @param region Selection of the BEE region to be configured.
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* @param key AES key.
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* @param keySize Size of AES key.
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* @param nonce AES nonce.
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* @param nonceSize Size of AES nonce.
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*/
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status_t BEE_SetRegionKey(
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BEE_Type *base, bee_region_t region, const uint8_t *key, size_t keySize, const uint8_t *nonce, size_t nonceSize);
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/*!
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* @brief Gets the BEE status flags.
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*
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* This function returns status of BEE peripheral.
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*
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* @param base BEE peripheral address.
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*
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* @return The status flags. This is the logical OR of members of the
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* enumeration ::bee_status_flags_t
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*/
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uint32_t BEE_GetStatusFlags(BEE_Type *base);
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/*!
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* @brief Clears the BEE status flags.
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*
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* @param base BEE peripheral base address.
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* @param mask The status flags to clear. This is a logical OR of members of the
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* enumeration ::bee_status_flags_t
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*/
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void BEE_ClearStatusFlags(BEE_Type *base, uint32_t mask);
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/*!
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* @brief Computes offset to be set for specifed memory location.
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*
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* This function calculates offset that must be set for BEE region to access physical memory location.
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*
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* @param addressMemory Address of physical memory location.
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*/
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static inline uint32_t BEE_GetOffset(uint32_t addressMemory)
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{
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return (addressMemory >> 16);
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}
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#if defined(__cplusplus)
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}
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#endif
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#endif /* _FSL_BEE_H_ */
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