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-rw-r--r--include/drivers/arm/cryptocell/712/cc_crypto_boot_defs.h34
-rw-r--r--include/drivers/arm/cryptocell/712/cc_pal_sb_plat.h33
-rw-r--r--include/drivers/arm/cryptocell/712/cc_pal_types.h40
-rw-r--r--include/drivers/arm/cryptocell/712/cc_pal_types_plat.h25
-rw-r--r--include/drivers/arm/cryptocell/712/cc_sec_defs.h34
-rw-r--r--include/drivers/arm/cryptocell/712/crypto_driver.h35
-rw-r--r--include/drivers/arm/cryptocell/712/nvm.h55
-rw-r--r--include/drivers/arm/cryptocell/712/nvm_otp.h59
-rw-r--r--include/drivers/arm/cryptocell/712/rsa.h55
-rw-r--r--include/drivers/arm/cryptocell/712/sbrom_bsv_api.h72
-rw-r--r--include/drivers/arm/cryptocell/712/secureboot_base_func.h49
-rw-r--r--include/drivers/arm/cryptocell/712/secureboot_gen_defs.h56
-rw-r--r--include/drivers/arm/cryptocell/712/util.h72
13 files changed, 619 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 0000000000..2cb8938d2b
--- /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 0000000000..212a710be0
--- /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 0000000000..8c09b23cc7
--- /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 0000000000..84100245b2
--- /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 0000000000..d41921855b
--- /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 0000000000..18104dd7d4
--- /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 0000000000..a70289fb89
--- /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 0000000000..390d62bc1d
--- /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 0000000000..cd9925b325
--- /dev/null
+++ b/include/drivers/arm/cryptocell/712/rsa.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2017, 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 ion bits */
+#define RSA_MOD_SIZE_IN_BITS 2048UL
+#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))
+
+/* size of buffer for Barrett modulus tag NP, used in PKA algorithms */
+#define RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_BITS 132
+#define RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_BYTES (CALC_FULL_BYTES(RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_BITS))
+#define RSA_HW_PKI_PKA_BARRETT_MOD_TAG_SIZE_IN_WORDS (CALC_FULL_32BIT_WORDS(RSA_HW_PKI_PKA_BARRETT_MOD_TAG_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 0000000000..de835461fd
--- /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 0000000000..6db596e0d7
--- /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 0000000000..68b9ef8aec
--- /dev/null
+++ b/include/drivers/arm/cryptocell/712/secureboot_gen_defs.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2017, 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*/
+#define SB_RSA_MOD_SIZE_IN_WORDS 64
+#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 */
+typedef enum {
+ RSA_PSS_2048 = 0x01, /*!< RSA PSS 2048 after hash SHA 256 */
+ RSA_PKCS15_2048 = 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 0000000000..18fb5999dc
--- /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