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cc2538: Add crypto drivers and examples for AES-CCM and SHA-256

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Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
This commit is contained in:
Benoît Thébaudeau 2015-05-15 19:52:08 +02:00
parent c03536f04e
commit 117dc4e5e3
16 changed files with 2363 additions and 0 deletions
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cpu/cc2538/dev/crypto.c Normal file
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/*
* Copyright (c) 2013, ADVANSEE - http://www.advansee.com/
* 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.
*
* 3. Neither the name of the copyright holder 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 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.
*/
/**
* \addtogroup cc2538-crypto
* @{
*
* \file
* Implementation of the cc2538 AES/SHA cryptoprocessor driver
*/
#include "contiki.h"
#include "dev/sys-ctrl.h"
#include "dev/crypto.h"
#include "reg.h"
/*---------------------------------------------------------------------------*/
void
crypto_init(void)
{
volatile int i;
crypto_enable();
/* Reset the AES/SHA cryptoprocessor */
REG(SYS_CTRL_SRSEC) |= SYS_CTRL_SRSEC_AES;
for(i = 0; i < 16; i++);
REG(SYS_CTRL_SRSEC) &= ~SYS_CTRL_SRSEC_AES;
}
/*---------------------------------------------------------------------------*/
void
crypto_enable(void)
{
/* Enable the clock for the AES/SHA cryptoprocessor */
REG(SYS_CTRL_RCGCSEC) |= SYS_CTRL_RCGCSEC_AES;
REG(SYS_CTRL_SCGCSEC) |= SYS_CTRL_SCGCSEC_AES;
REG(SYS_CTRL_DCGCSEC) |= SYS_CTRL_DCGCSEC_AES;
}
/*---------------------------------------------------------------------------*/
void
crypto_disable(void)
{
/* Gate the clock for the AES/SHA cryptoprocessor */
REG(SYS_CTRL_RCGCSEC) &= ~SYS_CTRL_RCGCSEC_AES;
REG(SYS_CTRL_SCGCSEC) &= ~SYS_CTRL_SCGCSEC_AES;
REG(SYS_CTRL_DCGCSEC) &= ~SYS_CTRL_DCGCSEC_AES;
}
/** @} */