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/*
* Copyright (c) 2014, STMicroelectronics International N.V.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TEE_COMMON_OTP_H
#define TEE_COMMON_OTP_H
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <utee_defines.h>
struct tee_hw_unique_key {
uint8_t data[HW_UNIQUE_KEY_LENGTH];
};
#if defined(CFG_OTP_SUPPORT)
void tee_otp_get_hw_unique_key(struct tee_hw_unique_key *hwkey);
int tee_otp_get_die_id(uint8_t *buffer, size_t len);
#else
static inline void tee_otp_get_hw_unique_key(struct tee_hw_unique_key *hwkey)
{
memset(&hwkey->data[0], 0, sizeof(hwkey->data));
}
static inline int tee_otp_get_die_id(uint8_t *buffer, size_t len)
{
size_t i;
char pattern[4] = { 'B', 'E', 'E', 'F' };
for (i = 0; i < len; i++)
buffer[i] = pattern[i % 4];
return 0;
}
#endif /* !defined(CFG_OTP_SUPPORT) */
#endif /* TEE_COMMON_OTP_H */
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