diff options
Diffstat (limited to 'nuttx/arch/arm/src/lpc43xx/chip/lpc43_aes.h')
-rw-r--r-- | nuttx/arch/arm/src/lpc43xx/chip/lpc43_aes.h | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/lpc43xx/chip/lpc43_aes.h b/nuttx/arch/arm/src/lpc43xx/chip/lpc43_aes.h new file mode 100644 index 000000000..43b623c87 --- /dev/null +++ b/nuttx/arch/arm/src/lpc43xx/chip/lpc43_aes.h @@ -0,0 +1,110 @@ +/************************************************************************************ + * 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 */ |