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rt-thread-official/bsp/imxrt/libraries/MIMXRT1020/MIMXRT1021/drivers/fsl_dcp.h

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/*
* Copyright 2017-2020 NXP
* All rights reserved.
*
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef _FSL_DCP_H_
#define _FSL_DCP_H_
#include "fsl_common.h"
/*******************************************************************************
* Definitions
*******************************************************************************/
/*!
* @addtogroup dcp_driver
* @{
*/
/*! @name Driver version */
/*@{*/
/*! @brief DCP driver version. Version 2.1.6.
*
* Current version: 2.1.6
*
* Change log:
*
* - Version 2.1.6
* - Bug Fix
* - MISRA C-2012 issue fix.
*
* - Version 2.1.5
* - Improvements
* - Add support for DCACHE.
*
* - Version 2.1.4
* - Bug Fix
* - Fix CRC-32 computation issue on the code's block boundary size.
*
* - Version 2.1.3
* - Bug Fix
* - MISRA C-2012 issue fixed: rule 10.1, 10.3, 10.4, 11.9, 14.4, 16.4 and 17.7.
*
* - Version 2.1.2
* - Fix sign-compare warning in dcp_reverse_and_copy.
*
* - Version 2.1.1
* - Add DCP status clearing when channel operation is complete
*
* - 2.1.0
* - Add byte/word swap feature for key, input and output data
*
* - Version 2.0.0
* - Initial version
*/
#define FSL_DCP_DRIVER_VERSION (MAKE_VERSION(2, 1, 6))
/*@}*/
/*! @brief DCP status return codes. */
enum _dcp_status
{
kStatus_DCP_Again = MAKE_STATUS(kStatusGroup_DCP, 0), /*!< Non-blocking function shall be called again. */
};
/*! @brief DCP channel enable.
*
*/
typedef enum _dcp_ch_enable
{
kDCP_chDisable = 0U, /*!< DCP channel disable */
kDCP_ch0Enable = 1U, /*!< DCP channel 0 enable */
kDCP_ch1Enable = 2U, /*!< DCP channel 1 enable */
kDCP_ch2Enable = 4U, /*!< DCP channel 2 enable */
kDCP_ch3Enable = 8U, /*!< DCP channel 3 enable */
kDCP_chEnableAll = 15U, /*!< DCP channel enable all */
} _dcp_ch_enable_t;
/*! @brief DCP interrupt enable.
*
*/
typedef enum _dcp_ch_int_enable
{
kDCP_chIntDisable = 0U, /*!< DCP interrupts disable */
kDCP_ch0IntEnable = 1U, /*!< DCP channel 0 interrupt enable */
kDCP_ch1IntEnable = 2U, /*!< DCP channel 1 interrupt enable */
kDCP_ch2IntEnable = 4U, /*!< DCP channel 2 interrupt enable */
kDCP_ch3IntEnable = 8U, /*!< DCP channel 3 interrupt enable */
} _dcp_ch_int_enable_t;
/*! @brief DCP channel selection.
*
*/
typedef enum _dcp_channel
{
kDCP_Channel0 = (1u << 16), /*!< DCP channel 0. */
kDCP_Channel1 = (1u << 17), /*!< DCP channel 1. */
kDCP_Channel2 = (1u << 18), /*!< DCP channel 2. */
kDCP_Channel3 = (1u << 19), /*!< DCP channel 3. */
} dcp_channel_t;
/*! @brief DCP key slot selection.
*
*/
typedef enum _dcp_key_slot
{
kDCP_KeySlot0 = 0U, /*!< DCP key slot 0. */
kDCP_KeySlot1 = 1U, /*!< DCP key slot 1. */
kDCP_KeySlot2 = 2U, /*!< DCP key slot 2.*/
kDCP_KeySlot3 = 3U, /*!< DCP key slot 3. */
kDCP_OtpKey = 4U, /*!< DCP OTP key. */
kDCP_OtpUniqueKey = 5U, /*!< DCP unique OTP key. */
kDCP_PayloadKey = 6U, /*!< DCP payload key. */
} dcp_key_slot_t;
/*! @brief DCP key, input & output swap options
*
*/
typedef enum _dcp_swap
{
kDCP_NoSwap = 0x0U,
kDCP_KeyByteSwap = 0x40000U,
kDCP_KeyWordSwap = 0x80000U,
kDCP_InputByteSwap = 0x100000U,
kDCP_InputWordSwap = 0x200000U,
kDCP_OutputByteSwap = 0x400000U,
kDCP_OutputWordSwap = 0x800000U,
} dcp_swap_t;
/*! @brief DCP's work packet. */
typedef struct _dcp_work_packet
{
uint32_t nextCmdAddress;
uint32_t control0;
uint32_t control1;
uint32_t sourceBufferAddress;
uint32_t destinationBufferAddress;
uint32_t bufferSize;
uint32_t payloadPointer;
uint32_t status;
} dcp_work_packet_t;
/*! @brief Specify DCP's key resource and DCP channel. */
typedef struct _dcp_handle
{
dcp_channel_t channel; /*!< Specify DCP channel. */
dcp_key_slot_t keySlot; /*!< For operations with key (such as AES encryption/decryption), specify DCP key slot. */
uint32_t swapConfig; /*!< For configuration of key, input, output byte/word swap options */
uint32_t keyWord[4];
uint32_t iv[4];
} dcp_handle_t;
/*! @brief DCP's context buffer, used by DCP for context switching between channels. */
typedef struct _dcp_context
{
uint32_t x[208 / sizeof(uint32_t)];
} dcp_context_t;
/*! @brief DCP's configuration structure. */
typedef struct _dcp_config
{
bool gatherResidualWrites; /*!< Enable the ragged writes to the unaligned buffers. */
bool enableContextCaching; /*!< Enable the caching of contexts between the operations. */
bool enableContextSwitching; /*!< Enable automatic context switching for the channels. */
uint8_t enableChannel; /*!< DCP channel enable. */
uint8_t enableChannelInterrupt; /*!< Per-channel interrupt enable. */
} dcp_config_t;
/*! @} */
#ifndef DCP_USE_DCACHE
#define DCP_USE_DCACHE 1
#endif
/* 1 - driver supports DCACHE, 0 - drivers does not support DCACHE */
/* When enable (DCP_USE_DCACHE = 1) Input/output buffers and hash ctx should be in */
/* non-cached memory or handled properly (Clean & Invalidate DCACHE) */
/*******************************************************************************
* AES Definitions
*******************************************************************************/
/*!
* @addtogroup dcp_driver_aes
* @{
*/
/*! AES block size in bytes */
#define DCP_AES_BLOCK_SIZE 16
/*!
*@}
*/ /* end of dcp_driver_aes */
/*******************************************************************************
* HASH Definitions
******************************************************************************/
/*!
* @addtogroup dcp_driver_hash
* @{
*/
/* DCP cannot correctly compute hash for message with zero size. When enabled, driver bypases DCP and returns correct
* hash value. If you are sure, that the driver will never be called with zero sized message, you can disable this
* feature to reduce code size */
#define DCP_HASH_CAVP_COMPATIBLE
/*! @brief Supported cryptographic block cipher functions for HASH creation */
typedef enum _dcp_hash_algo_t
{
kDCP_Sha1, /*!< SHA_1 */
kDCP_Sha256, /*!< SHA_256 */
kDCP_Crc32, /*!< CRC_32 */
} dcp_hash_algo_t;
/*! @brief DCP HASH Context size. */
#define DCP_SHA_BLOCK_SIZE 128U /*!< internal buffer block size */
#define DCP_HASH_BLOCK_SIZE DCP_SHA_BLOCK_SIZE /*!< DCP hash block size */
/*! @brief DCP HASH Context size. */
#define DCP_HASH_CTX_SIZE 64
/*! @brief Storage type used to save hash context. */
typedef struct _dcp_hash_ctx_t
{
uint32_t x[DCP_HASH_CTX_SIZE];
} dcp_hash_ctx_t;
/*!
*@}
*/ /* end of dcp_driver_hash */
/*******************************************************************************
* API
******************************************************************************/
#if defined(__cplusplus)
extern "C" {
#endif
/*!
* @addtogroup dcp_driver
* @{
*/
/*!
* @brief Enables clock to and enables DCP
*
* Enable DCP clock and configure DCP.
*
* @param base DCP base address
* @param config Pointer to configuration structure.
*/
void DCP_Init(DCP_Type *base, const dcp_config_t *config);
/*!
* @brief Disable DCP clock
*
* Reset DCP and Disable DCP clock.
*
* @param base DCP base address
*/
void DCP_Deinit(DCP_Type *base);
/*!
* @brief Gets the default configuration structure.
*
* This function initializes the DCP configuration structure to a default value. The default
* values are as follows.
* dcpConfig->gatherResidualWrites = true;
* dcpConfig->enableContextCaching = true;
* dcpConfig->enableContextSwitching = true;
* dcpConfig->enableChannnel = kDCP_chEnableAll;
* dcpConfig->enableChannelInterrupt = kDCP_chIntDisable;
*
* @param[out] config Pointer to configuration structure.
*/
void DCP_GetDefaultConfig(dcp_config_t *config);
/*!
* @brief Poll and wait on DCP channel.
*
* Polls the specified DCP channel until current it completes activity.
*
* @param base DCP peripheral base address.
* @param handle Specifies DCP channel.
* @return kStatus_Success When data processing completes without error.
* @return kStatus_Fail When error occurs.
*/
status_t DCP_WaitForChannelComplete(DCP_Type *base, dcp_handle_t *handle);
/*!
*@}
*/ /* end of dcp_driver */
/*******************************************************************************
* AES API
******************************************************************************/
/*!
* @addtogroup dcp_driver_aes
* @{
*/
/*!
* @brief Set AES key to dcp_handle_t struct and optionally to DCP.
*
* Sets the AES key for encryption/decryption with the dcp_handle_t structure.
* The dcp_handle_t input argument specifies keySlot.
* If the keySlot is kDCP_OtpKey, the function will check the OTP_KEY_READY bit and will return it's ready to use
* status.
* For other keySlot selections, the function will copy and hold the key in dcp_handle_t struct.
* If the keySlot is one of the four DCP SRAM-based keys (one of kDCP_KeySlot0, kDCP_KeySlot1, kDCP_KeySlot2,
* kDCP_KeySlot3),
* this function will also load the supplied key to the specified keySlot in DCP.
*
* @param base DCP peripheral base address.
* @param handle Handle used for the request.
* @param key 0-mod-4 aligned pointer to AES key.
* @param keySize AES key size in bytes. Shall equal 16.
* @return status from set key operation
*/
status_t DCP_AES_SetKey(DCP_Type *base, dcp_handle_t *handle, const uint8_t *key, size_t keySize);
/*!
* @brief Encrypts AES on one or multiple 128-bit block(s).
*
* Encrypts AES.
* The source plaintext and destination ciphertext can overlap in system memory.
*
* @param base DCP peripheral base address
* @param handle Handle used for this request.
* @param plaintext Input plain text to encrypt
* @param[out] ciphertext Output cipher text
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
* @return Status from encrypt operation
*/
status_t DCP_AES_EncryptEcb(
DCP_Type *base, dcp_handle_t *handle, const uint8_t *plaintext, uint8_t *ciphertext, size_t size);
/*!
* @brief Decrypts AES on one or multiple 128-bit block(s).
*
* Decrypts AES.
* The source ciphertext and destination plaintext can overlap in system memory.
*
* @param base DCP peripheral base address
* @param handle Handle used for this request.
* @param ciphertext Input plain text to encrypt
* @param[out] plaintext Output cipher text
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
* @return Status from decrypt operation
*/
status_t DCP_AES_DecryptEcb(
DCP_Type *base, dcp_handle_t *handle, const uint8_t *ciphertext, uint8_t *plaintext, size_t size);
/*!
* @brief Encrypts AES using CBC block mode.
*
* Encrypts AES using CBC block mode.
* The source plaintext and destination ciphertext can overlap in system memory.
*
* @param base DCP peripheral base address
* @param handle Handle used for this request.
* @param plaintext Input plain text to encrypt
* @param[out] ciphertext Output cipher text
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
* @param iv Input initial vector to combine with the first input block.
* @return Status from encrypt operation
*/
status_t DCP_AES_EncryptCbc(DCP_Type *base,
dcp_handle_t *handle,
const uint8_t *plaintext,
uint8_t *ciphertext,
size_t size,
const uint8_t iv[16]);
/*!
* @brief Decrypts AES using CBC block mode.
*
* Decrypts AES using CBC block mode.
* The source ciphertext and destination plaintext can overlap in system memory.
*
* @param base DCP peripheral base address
* @param handle Handle used for this request.
* @param ciphertext Input cipher text to decrypt
* @param[out] plaintext Output plain text
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
* @param iv Input initial vector to combine with the first input block.
* @return Status from decrypt operation
*/
status_t DCP_AES_DecryptCbc(DCP_Type *base,
dcp_handle_t *handle,
const uint8_t *ciphertext,
uint8_t *plaintext,
size_t size,
const uint8_t iv[16]);
/*!
*@}
*/ /* end of dcp_driver_aes */
/*!
* @addtogroup dcp_nonblocking_driver_aes
* @{
*/
/*!
* @brief Encrypts AES using the ECB block mode.
*
* Puts AES ECB encrypt work packet to DCP channel.
*
* @param base DCP peripheral base address
* @param handle Handle used for this request.
* @param[out] dcpPacket Memory for the DCP work packet.
* @param plaintext Input plain text to encrypt.
* @param[out] ciphertext Output cipher text
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
* @return kStatus_Success The work packet has been scheduled at DCP channel.
* @return kStatus_DCP_Again The DCP channel is busy processing previous request.
*/
status_t DCP_AES_EncryptEcbNonBlocking(DCP_Type *base,
dcp_handle_t *handle,
dcp_work_packet_t *dcpPacket,
const uint8_t *plaintext,
uint8_t *ciphertext,
size_t size);
/*!
* @brief Decrypts AES using ECB block mode.
*
* Puts AES ECB decrypt dcpPacket to DCP input job ring.
*
* @param base DCP peripheral base address
* @param handle Handle used for this request.
* @param[out] dcpPacket Memory for the DCP work packet.
* @param ciphertext Input cipher text to decrypt
* @param[out] plaintext Output plain text
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
* @return kStatus_Success The work packet has been scheduled at DCP channel.
* @return kStatus_DCP_Again The DCP channel is busy processing previous request.
*/
status_t DCP_AES_DecryptEcbNonBlocking(DCP_Type *base,
dcp_handle_t *handle,
dcp_work_packet_t *dcpPacket,
const uint8_t *ciphertext,
uint8_t *plaintext,
size_t size);
/*!
* @brief Encrypts AES using CBC block mode.
*
* Puts AES CBC encrypt dcpPacket to DCP input job ring.
*
* @param base DCP peripheral base address
* @param handle Handle used for this request. Specifies jobRing.
* @param[out] dcpPacket Memory for the DCP work packet.
* @param plaintext Input plain text to encrypt
* @param[out] ciphertext Output cipher text
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
* @param iv Input initial vector to combine with the first input block.
* @return kStatus_Success The work packet has been scheduled at DCP channel.
* @return kStatus_DCP_Again The DCP channel is busy processing previous request.
*/
status_t DCP_AES_EncryptCbcNonBlocking(DCP_Type *base,
dcp_handle_t *handle,
dcp_work_packet_t *dcpPacket,
const uint8_t *plaintext,
uint8_t *ciphertext,
size_t size,
const uint8_t *iv);
/*!
* @brief Decrypts AES using CBC block mode.
*
* Puts AES CBC decrypt dcpPacket to DCP input job ring.
*
* @param base DCP peripheral base address
* @param handle Handle used for this request. Specifies jobRing.
* @param[out] dcpPacket Memory for the DCP work packet.
* @param ciphertext Input cipher text to decrypt
* @param[out] plaintext Output plain text
* @param size Size of input and output data in bytes. Must be multiple of 16 bytes.
* @param iv Input initial vector to combine with the first input block.
* @return kStatus_Success The work packet has been scheduled at DCP channel.
* @return kStatus_DCP_Again The DCP channel is busy processing previous request.
*/
status_t DCP_AES_DecryptCbcNonBlocking(DCP_Type *base,
dcp_handle_t *handle,
dcp_work_packet_t *dcpPacket,
const uint8_t *ciphertext,
uint8_t *plaintext,
size_t size,
const uint8_t *iv);
/*!
*@}
*/ /* end of dcp_nonblocking_driver_aes */
/*******************************************************************************
* HASH API
******************************************************************************/
/*!
* @addtogroup dcp_driver_hash
* @{
*/
/*!
* @brief Initialize HASH context
*
* This function initializes the HASH.
*
* @param base DCP peripheral base address
* @param handle Specifies the DCP channel used for hashing.
* @param[out] ctx Output hash context
* @param algo Underlaying algorithm to use for hash computation.
* @return Status of initialization
*/
status_t DCP_HASH_Init(DCP_Type *base, dcp_handle_t *handle, dcp_hash_ctx_t *ctx, dcp_hash_algo_t algo);
/*!
* @brief Add data to current HASH
*
* Add data to current HASH. This can be called repeatedly with an arbitrary amount of data to be
* hashed. The functions blocks. If it returns kStatus_Success, the running hash
* has been updated (DCP has processed the input data), so the memory at the input pointer
* can be released back to system. The DCP context buffer is updated with the running hash
* and with all necessary information to support possible context switch.
*
* @param base DCP peripheral base address
* @param[in,out] ctx HASH context
* @param input Input data
* @param inputSize Size of input data in bytes
* @return Status of the hash update operation
*/
status_t DCP_HASH_Update(DCP_Type *base, dcp_hash_ctx_t *ctx, const uint8_t *input, size_t inputSize);
/*!
* @brief Finalize hashing
*
* Outputs the final hash (computed by DCP_HASH_Update()) and erases the context.
*
* @param base DCP peripheral base address
* @param[in,out] ctx Input hash context
* @param[out] output Output hash data
* @param[in,out] outputSize Optional parameter (can be passed as NULL). On function entry, it specifies the size of
* output[] buffer. On function return, it stores the number of updated output bytes.
* @return Status of the hash finish operation
*/
status_t DCP_HASH_Finish(DCP_Type *base, dcp_hash_ctx_t *ctx, uint8_t *output, size_t *outputSize);
/*!
* @brief Create HASH on given data
*
* Perform the full SHA or CRC32 in one function call. The function is blocking.
*
* @param base DCP peripheral base address
* @param handle Handle used for the request.
* @param algo Underlaying algorithm to use for hash computation.
* @param input Input data
* @param inputSize Size of input data in bytes
* @param[out] output Output hash data
* @param[out] outputSize Output parameter storing the size of the output hash in bytes
* @return Status of the one call hash operation.
*/
status_t DCP_HASH(DCP_Type *base,
dcp_handle_t *handle,
dcp_hash_algo_t algo,
const uint8_t *input,
size_t inputSize,
uint8_t *output,
size_t *outputSize);
/*!
*@}
*/ /* end of dcp_driver_hash */
#if defined(__cplusplus)
}
#endif
#endif /* _FSL_DCP_H_ */
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