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diff --git a/core/include/kernel/tee_common_otp.h b/core/include/kernel/tee_common_otp.h
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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 */