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+/************************************************************************************
+ * arch/arm/src/lpc43xx/chip/lpc43_aes.h
+ *
+ * Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ * Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ * used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * 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 OWNER 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 __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_OTP_H
+#define __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_OTP_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+/* The AES is controlled through a set of simple API calls located in the LPC43xx
+ * ROM. This value holds the pointer to the AES driver table.
+ */
+
+#define LPC43_ROM_AES_DRIVER_TABLE LPC43_ROM_DRIVER_TABLE2
+
+/************************************************************************************
+ * Public Types
+ ************************************************************************************/
+
+enum lpc43_aescmd_e
+{
+ AES_API_CMD_ENCODE_ECB = 0,
+ AES_API_CMD_DECODE_ECB = 1,
+ AES_API_CMD_ENCODE_CBC = 2,
+ AES_API_CMD_DECODE_CBC = 3
+};
+
+struct lpc43_aes_s
+{
+ /* Initialize the AES engine */
+
+ void (*aes_Init)(void);
+
+ /* Offset 0x04 -- Defines AES engine operation mode. See enum lpc43_aescmd_e */
+
+ unsigned int (*aes_SetMode)(unsigned int cmd);
+
+ /* Load 128-bit AES user keys */
+
+ void (*aes_LoadKey1)(void);
+ void (*aes_LoadKey2)(void);
+
+ /* Loads randomly generated key in AES engine. To update the RNG and load a new
+ * random number, use the API call otp_GenRand before aes_LoadKeyRNG.
+ */
+
+ void (*aes_LoadKeyRNG)(void);
+
+ /* Loads 128-bit AES software defined user key (16 bytes) */
+
+ void (*aes_LoadKeySW)(unsigned char *key);
+
+ /* Loads 128-bit AES initialization vector (16 bytes) */
+
+ void (*aes_LoadIV_SW)(unsigned char *iv);
+
+ /* Loads 128-bit AES IC specific initialization vector, which is used to decrypt
+ * a boot image.
+ */
+
+ void (*aes_LoadIV_IC)(void);
+};
+
+/************************************************************************************
+ * Public Data
+ ************************************************************************************/
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#endif /* __ARCH_ARM_SRC_LPC43XX_CHIP_LPC43_OTP_H */