mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-08-14 09:28:59 +00:00
117dc4e5e3
Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
/*
|
|
* 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;
|
|
}
|
|
|
|
/** @} */
|