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Diffstat (limited to 'core/include/kernel/tee_common_otp.h')
-rw-r--r-- | core/include/kernel/tee_common_otp.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/core/include/kernel/tee_common_otp.h b/core/include/kernel/tee_common_otp.h new file mode 100644 index 0000000..c04b7be --- /dev/null +++ b/core/include/kernel/tee_common_otp.h @@ -0,0 +1,64 @@ +/* + * 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 */ |