diff options
Diffstat (limited to 'include/drivers/arm/cryptocell/712')
| -rw-r--r-- | include/drivers/arm/cryptocell/712/cc_crypto_boot_defs.h | 34 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/cc_pal_sb_plat.h | 33 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/cc_pal_types.h | 40 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/cc_pal_types_plat.h | 25 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/cc_sec_defs.h | 34 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/crypto_driver.h | 35 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/nvm.h | 55 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/nvm_otp.h | 59 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/rsa.h | 57 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/sbrom_bsv_api.h | 72 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/secureboot_base_func.h | 49 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/secureboot_gen_defs.h | 66 | ||||
| -rw-r--r-- | include/drivers/arm/cryptocell/712/util.h | 72 |
13 files changed, 631 insertions, 0 deletions
diff --git a/include/drivers/arm/cryptocell/712/cc_crypto_boot_defs.h b/include/drivers/arm/cryptocell/712/cc_crypto_boot_defs.h new file mode 100644 index 0000000..2cb8938 --- /dev/null +++ b/include/drivers/arm/cryptocell/712/cc_crypto_boot_defs.h @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _CC_CRYPTO_BOOT_DEFS_H +#define _CC_CRYPTO_BOOT_DEFS_H + +/*! @file +@brief This file contains SBROM definitions +*/ + +/*! Version counters value. */ +typedef enum { + + CC_SW_VERSION_COUNTER1 = 1, /*!< Counter 1 - trusted version. */ + CC_SW_VERSION_COUNTER2, /*!< Counter 2 - non trusted version. */ + + CC_SW_VERSION_MAX = 0x7FFFFFFF + +} CCSbSwVersionId_t; + +/* HASH boot key definition */ +typedef enum { + CC_SB_HASH_BOOT_KEY_0_128B = 0, /*!< 128-bit truncated SHA256 digest of public key 0. */ + CC_SB_HASH_BOOT_KEY_1_128B = 1, /*!< 128-bit truncated SHA256 digest of public key 1. */ + CC_SB_HASH_BOOT_KEY_256B = 2, /*!< 256-bit SHA256 digest of public key. */ + CC_SB_HASH_BOOT_NOT_USED = 0xFF, + CC_SB_HASH_MAX_NUM = 0x7FFFFFFF, /*!\internal use external 128-bit truncated SHA256 digest */ +} CCSbPubKeyIndexType_t; + + +#endif diff --git a/include/drivers/arm/cryptocell/712/cc_pal_sb_plat.h b/include/drivers/arm/cryptocell/712/cc_pal_sb_plat.h new file mode 100644 index 0000000..212a710 --- /dev/null +++ b/include/drivers/arm/cryptocell/712/cc_pal_sb_plat.h @@ -0,0 +1,33 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/*! +@file +@brief This file contains the platform-dependent definitions that are used in the SBROM code. +*/ + +#ifndef _CC_PAL_SB_PLAT_H +#define _CC_PAL_SB_PLAT_H + +#include "cc_pal_types.h" + + +#ifdef __cplusplus +extern "C" +{ +#endif + +/*! Definition of DMA address type, can be 32 bits or 64 bits according to CryptoCell's HW. */ +typedef uint64_t CCDmaAddr_t; +/*! Definition of CryptoCell address type, can be 32 bits or 64 bits according to platform. */ +typedef uintptr_t CCAddr_t; + + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/cc_pal_types.h b/include/drivers/arm/cryptocell/712/cc_pal_types.h new file mode 100644 index 0000000..8c09b23 --- /dev/null +++ b/include/drivers/arm/cryptocell/712/cc_pal_types.h @@ -0,0 +1,40 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef CC_PAL_TYPES_H +#define CC_PAL_TYPES_H + +/*! +@file +@brief This file contains platform-dependent definitions and types. +*/ + +#include "cc_pal_types_plat.h" + +typedef enum { + CC_FALSE = 0, + CC_TRUE = 1 +} CCBool; + +#define CC_SUCCESS 0UL +#define CC_FAIL 1UL + +#define CC_1K_SIZE_IN_BYTES 1024 +#define CC_BITS_IN_BYTE 8 +#define CC_BITS_IN_32BIT_WORD 32 +#define CC_32BIT_WORD_SIZE (sizeof(uint32_t)) + +#define CC_OK CC_SUCCESS + +#define CC_UNUSED_PARAM(prm) ((void)prm) + +#define CC_MAX_UINT32_VAL (0xFFFFFFFF) + +#define CALC_FULL_BYTES(numBits) (((numBits) + (CC_BITS_IN_BYTE - 1))/CC_BITS_IN_BYTE) +#define CALC_FULL_32BIT_WORDS(numBits) (((numBits) + (CC_BITS_IN_32BIT_WORD - 1))/CC_BITS_IN_32BIT_WRD) +#define CALC_32BIT_WORDS_FROM_BYTES(sizeBytes) (((sizeBytes) + CC_32BIT_WORD_SIZE - 1)/CC_32BIT_WORD_SIZE) + +#endif diff --git a/include/drivers/arm/cryptocell/712/cc_pal_types_plat.h b/include/drivers/arm/cryptocell/712/cc_pal_types_plat.h new file mode 100644 index 0000000..8410024 --- /dev/null +++ b/include/drivers/arm/cryptocell/712/cc_pal_types_plat.h @@ -0,0 +1,25 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/*! @file +@brief This file contains basic type definitions that are platform-dependent. +*/ +#ifndef _CC_PAL_TYPES_PLAT_H +#define _CC_PAL_TYPES_PLAT_H +/* Host specific types for standard (ISO-C99) compilant platforms */ + +#include <stddef.h> +#include <stdint.h> + +typedef uint32_t CCStatus; + +#define CCError_t CCStatus +#define CC_INFINITE 0xFFFFFFFF + +#define CEXPORT_C +#define CIMPORT_C + +#endif /*_CC_PAL_TYPES_PLAT_H*/ diff --git a/include/drivers/arm/cryptocell/712/cc_sec_defs.h b/include/drivers/arm/cryptocell/712/cc_sec_defs.h new file mode 100644 index 0000000..d419218 --- /dev/null +++ b/include/drivers/arm/cryptocell/712/cc_sec_defs.h @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _CC_SEC_DEFS_H +#define _CC_SEC_DEFS_H + +/*! +@file +@brief This file contains general hash definitions and types. +*/ + + +#ifdef __cplusplus +extern "C" +{ +#endif + +/*! The hashblock size in words. */ +#define HASH_BLOCK_SIZE_IN_WORDS 16 +/*! The hash - SHA2 results in words. */ +#define HASH_RESULT_SIZE_IN_WORDS 8 +#define HASH_RESULT_SIZE_IN_BYTES 32 + +/*! Definition for hash result array. */ +typedef uint32_t CCHashResult_t[HASH_RESULT_SIZE_IN_WORDS]; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/crypto_driver.h b/include/drivers/arm/cryptocell/712/crypto_driver.h new file mode 100644 index 0000000..18104dd --- /dev/null +++ b/include/drivers/arm/cryptocell/712/crypto_driver.h @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _CRYPTO_DRIVER_H +#define _CRYPTO_DRIVER_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include "cc_pal_sb_plat.h" +#include "cc_sec_defs.h" + +/*---------------------------- + PUBLIC FUNCTIONS +-----------------------------------*/ +/*! + * @brief This function gives the functionality of integrated hash + * + * @param[in] hwBaseAddress - CryptoCell base address + * @param[out] hashResult - the HASH result. + * + */ +CCError_t SBROM_CryptoHash(unsigned long hwBaseAddress, CCDmaAddr_t inputDataAddr, uint32_t BlockSize, + CCHashResult_t hashResult); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/nvm.h b/include/drivers/arm/cryptocell/712/nvm.h new file mode 100644 index 0000000..a70289f --- /dev/null +++ b/include/drivers/arm/cryptocell/712/nvm.h @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _NVM__H +#define _NVM__H + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include "cc_crypto_boot_defs.h" +#include "cc_pal_types.h" +#include "cc_sec_defs.h" + +/*------------------------------------ + DEFINES +-------------------------------------*/ + +/** + * @brief This function reads the LCS from the SRAM/NVM + * + * @param[in] hwBaseAddress - CryptoCell base address + * + * @param[in/out] lcs_ptr - pointer to memory to store the LCS + * + * @return CCError_t - On success the value CC_OK is returned, and on failure -a value from NVM_error.h + */ +CCError_t NVM_GetLCS(unsigned long hwBaseAddress, uint32_t *lcs_ptr); + +/** + * @brief The NVM_ReadHASHPubKey function is a NVM interface function - + * The function retrieves the HASH of the device Public key from the SRAM/NVM + * + * @param[in] hwBaseAddress - CryptoCell base address + * + * @param[in] pubKeyIndex - Index of HASH in the OTP + * + * @param[out] PubKeyHASH - the public key HASH. + * + * @param[in] hashSizeInWords - hash size (valid values: 4W, 8W) + * + * @return CCError_t - On success the value CC_OK is returned, and on failure -a value from NVM_error.h + */ + +CCError_t NVM_ReadHASHPubKey(unsigned long hwBaseAddress, CCSbPubKeyIndexType_t pubKeyIndex, CCHashResult_t PubKeyHASH, uint32_t hashSizeInWords); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/nvm_otp.h b/include/drivers/arm/cryptocell/712/nvm_otp.h new file mode 100644 index 0000000..390d62b --- /dev/null +++ b/include/drivers/arm/cryptocell/712/nvm_otp.h @@ -0,0 +1,59 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _NVM_OTP_H +#define _NVM_OTP_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include "cc_crypto_boot_defs.h" +#include "cc_pal_types.h" + +/*------------------------------------ + DEFINES +-------------------------------------*/ + + + +/** + * @brief The NVM_GetSwVersion function is a NVM interface function - + * The function retrieves the SW version from the SRAM/NVM. + * In case of OTP, we support up to 16 anti-rollback counters (taken from the certificate) + * + * @param[in] hwBaseAddress - CryptoCell base address + * + * @param[in] counterId - relevant only for OTP (valid values: 1,2) + * + * @param[out] swVersion - the minimum SW version + * + * @return CCError_t - On success the value CC_OK is returned, and on failure -a value from NVM_error.h + */ +CCError_t NVM_GetSwVersion(unsigned long hwBaseAddress, CCSbSwVersionId_t counterId, uint32_t *swVersion); + + +/** + * @brief The NVM_SetSwVersion function is a NVM interface function - + * The function writes the SW version into the SRAM/NVM. + * In case of OTP, we support up to 16 anti-rollback counters (taken from the certificate) + * + * @param[in] hwBaseAddress - CryptoCell base address + * + * @param[in] counterId - relevant only for OTP (valid values: 1,2) + * + * @param[in] swVersion - the minimum SW version + * + * @return CCError_t - On success the value CC_OK is returned, and on failure -a value from NVM_error.h + */ +CCError_t NVM_SetSwVersion(unsigned long hwBaseAddress, CCSbSwVersionId_t counterId, uint32_t swVersion); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/rsa.h b/include/drivers/arm/cryptocell/712/rsa.h new file mode 100644 index 0000000..825214d --- /dev/null +++ b/include/drivers/arm/cryptocell/712/rsa.h @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef RSA_H +#define RSA_H + +/* + * All the includes that are needed for code using this module to + * compile correctly should be #included here. + */ + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include "cc_pal_types.h" + +/************************ Defines ******************************/ + +/* the modulus size in bits */ +#if (KEY_SIZE == 2048) +#define RSA_MOD_SIZE_IN_BITS 2048UL +#elif (KEY_SIZE == 3072) +#define RSA_MOD_SIZE_IN_BITS 3072UL +#else +#error Unsupported CryptoCell key size requested +#endif + +#define RSA_MOD_SIZE_IN_BYTES (CALC_FULL_BYTES(RSA_MOD_SIZE_IN_BITS)) +#define RSA_MOD_SIZE_IN_WORDS (CALC_FULL_32BIT_WORDS(RSA_MOD_SIZE_IN_BITS)) +#define RSA_MOD_SIZE_IN_256BITS (RSA_MOD_SIZE_IN_WORDS/8) +#define RSA_EXP_SIZE_IN_BITS 17UL +#define RSA_EXP_SIZE_IN_BYTES (CALC_FULL_BYTES(RSA_EXP_SIZE_IN_BITS)) + +/* + * @brief The RSA_CalcNp calculates Np value and saves it into Np_ptr: + * + * + + * @param[in] hwBaseAddress - HW base address. Relevant for HW + * implementation, for SW it is ignored. + * @N_ptr[in] - The pointer to the modulus buffer. + * @Np_ptr[out] - pointer to Np vector buffer. Its size must be >= 160. + */ +void RSA_CalcNp(unsigned long hwBaseAddress, + uint32_t *N_ptr, + uint32_t *Np_ptr); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/sbrom_bsv_api.h b/include/drivers/arm/cryptocell/712/sbrom_bsv_api.h new file mode 100644 index 0000000..de83546 --- /dev/null +++ b/include/drivers/arm/cryptocell/712/sbrom_bsv_api.h @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _SBROM_BSV_API_H +#define _SBROM_BSV_API_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +/*! @file +@brief This file contains all SBROM library APIs and definitions. +*/ +#include "cc_pal_types.h" + +/* Life cycle state definitions */ +#define CC_BSV_CHIP_MANUFACTURE_LCS 0x0 /*!< CM lifecycle value. */ +#define CC_BSV_DEVICE_MANUFACTURE_LCS 0x1 /*!< DM lifecycle value. */ +#define CC_BSV_SECURITY_DISABLED_LCS 0x3 /*!< SD lifecycle value. */ +#define CC_BSV_SECURE_LCS 0x5 /*!< Secure lifecycle value. */ +#define CC_BSV_RMA_LCS 0x7 /*!< RMA lifecycle value. */ + +/*---------------------------- + PUBLIC FUNCTIONS +-----------------------------------*/ + +/*! +@brief This function should be the first ARM TrustZone CryptoCell TEE SBROM library API called. +It verifies the HW product and version numbers. + +@return CC_OK On success. +@return A non-zero value from sbrom_bsv_error.h on failure. +*/ +CCError_t CC_BsvSbromInit( + unsigned long hwBaseAddress /*!< [in] HW registers base address. */ + ); + + +/*! +@brief This function can be used for checking the LCS value, after CC_BsvLcsGetAndInit was called by the Boot ROM. + +@return CC_OK On success. +@return A non-zero value from sbrom_bsv_error.h on failure. +*/ +CCError_t CC_BsvLcsGet( + unsigned long hwBaseAddress, /*!< [in] HW registers base address. */ + uint32_t *pLcs /*!< [out] Returned lifecycle state. */ + ); + +/*! +@brief This function retrieves the HW security lifecycle state, performs validity checks, +and additional initializations in case the LCS is RMA (sets the Kce to fixed value). +\note Invalid LCS results in an error returned. +In this case, the customer's code must completely disable the device. + +@return CC_OK On success. +@return A non-zero value from sbrom_bsv_error.h on failure. +*/ +CCError_t CC_BsvLcsGetAndInit( + unsigned long hwBaseAddress, /*!< [in] HW registers base address. */ + uint32_t *pLcs /*!< [out] Returned lifecycle state. */ + ); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/secureboot_base_func.h b/include/drivers/arm/cryptocell/712/secureboot_base_func.h new file mode 100644 index 0000000..6db596e --- /dev/null +++ b/include/drivers/arm/cryptocell/712/secureboot_base_func.h @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _SECURE_BOOT_BASE_FUNC_H +#define _SECURE_BOOT_BASE_FUNC_H + + +#ifdef __cplusplus +extern "C" +{ +#endif + +#include "cc_pal_types.h" +#include "secureboot_gen_defs.h" + + +/*---------------------------- + PUBLIC FUNCTIONS +-----------------------------------*/ + +/** + * @brief This function calculates the HASH over the given data and than verify + * RSA signature on that hashed data + * + * @param[in] hwBaseAddr - CryptoCell base address + * @param[in] pData - pointer to the data to be verified + * @param[in] pNParams - a pointer to the public key parameters + * @param[in] pSignature - a pointer to the signature structure + * @param[in] sizeOfData - size of the data to calculate the HASH on (in bytes) + * @param[in] RSAAlg - RSA algorithm to use + * + * @return CCError_t - On success the value CC_OK is returned, + * on failure - a value from BootImagesVerifier_error.h + */ +CCError_t CCSbVerifySignature(unsigned long hwBaseAddress, + uint32_t *pData, + CCSbNParams_t *pNParams, + CCSbSignature_t *pSignature, + uint32_t sizeOfData, + CCSbRsaAlg_t RSAAlg); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/secureboot_gen_defs.h b/include/drivers/arm/cryptocell/712/secureboot_gen_defs.h new file mode 100644 index 0000000..ed1f283 --- /dev/null +++ b/include/drivers/arm/cryptocell/712/secureboot_gen_defs.h @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef _SECURE_BOOT_GEN_DEFS_H +#define _SECURE_BOOT_GEN_DEFS_H + +#ifdef __cplusplus +extern "C" +{ +#endif + +/*! @file +@brief This file contains all of the definitions and structures that are used for the secure boot. +*/ + +#include "cc_pal_sb_plat.h" +#include "cc_sec_defs.h" + + +/* General definitions */ +/***********************/ + +/*RSA definitions*/ +#if (KEY_SIZE == 2048) +#define SB_RSA_MOD_SIZE_IN_WORDS 64 +#elif (KEY_SIZE == 3072) +#define SB_RSA_MOD_SIZE_IN_WORDS 96 +#else +#error Unsupported CryptoCell key size requested +#endif + +#define SB_RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_WORDS 5 + + +/*! Public key data structure. */ +typedef struct { + uint32_t N[SB_RSA_MOD_SIZE_IN_WORDS]; /*!< N public key, big endian representation. */ + uint32_t Np[SB_RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_WORDS]; /*!< Np (Barrett n' value). */ +} CCSbNParams_t; + +/*! Signature structure. */ +typedef struct { + uint32_t sig[SB_RSA_MOD_SIZE_IN_WORDS]; /*!< RSA PSS signature. */ +} CCSbSignature_t; + + +/********* Supported algorithms definitions ***********/ + +/*! RSA supported algorithms */ +/* Note: this applies to either 2k or 3k based on CryptoCell SBROM library + * version - it means 2k in version 1 and 3k in version 2 (yes, really). + */ +typedef enum { + RSA_PSS = 0x01, /*!< RSA PSS after hash SHA 256 */ + RSA_PKCS15 = 0x02, /*!< RSA PKX15 */ + RSA_Last = 0x7FFFFFFF +} CCSbRsaAlg_t; + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/include/drivers/arm/cryptocell/712/util.h b/include/drivers/arm/cryptocell/712/util.h new file mode 100644 index 0000000..18fb599 --- /dev/null +++ b/include/drivers/arm/cryptocell/712/util.h @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef UTIL_H +#define UTIL_H + +/* + * All the includes that are needed for code using this module to + * compile correctly should be #included here. + */ + +#ifdef __cplusplus +extern "C" +{ +#endif + +/************************ Defines ******************************/ + +/* invers the bytes on a word- used for output from HASH */ +#ifdef BIG__ENDIAN +#define UTIL_INVERSE_UINT32_BYTES(val) (val) +#else +#define UTIL_INVERSE_UINT32_BYTES(val) \ + (((val) >> 24) | (((val) & 0x00FF0000) >> 8) | (((val) & 0x0000FF00) << 8) | (((val) & 0x000000FF) << 24)) +#endif + +/* invers the bytes on a word - used for input data for HASH */ +#ifdef BIG__ENDIAN +#define UTIL_REVERT_UINT32_BYTES(val) \ + (((val) >> 24) | (((val) & 0x00FF0000) >> 8) | (((val) & 0x0000FF00) << 8) | (((val) & 0x000000FF) << 24)) +#else +#define UTIL_REVERT_UINT32_BYTES(val) (val) +#endif + + /* ------------------------------------------------------------ + ** + * @brief This function executes a reverse bytes copying from one buffer to another buffer. + * + * @param[in] dst_ptr - The pointer to destination buffer. + * @param[in] src_ptr - The pointer to source buffer. + * @param[in] size - The size in bytes. + * + */ + +void UTIL_ReverseMemCopy(uint8_t *dst_ptr, uint8_t *src_ptr, uint32_t size); + + + /* ------------------------------------------------------------ + ** + * @brief This function executes a reversed byte copy on a specified buffer. + * + * on a 6 byte byffer: + * + * buff[5] <---> buff[0] + * buff[4] <---> buff[1] + * buff[3] <---> buff[2] + * + * @param[in] dst_ptr - The counter buffer. + * @param[in] src_ptr - The counter size in bytes. + * + */ +void UTIL_ReverseBuff(uint8_t *buff_ptr, uint32_t size); + + +#ifdef __cplusplus +} +#endif + +#endif |