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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* Copyright (c) 2011 embedded brains GmbH. 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 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/nios2-utility.h>
void _Nios2_MPU_Reset( const Nios2_MPU_Configuration *config )
{
uint32_t data_mpubase = (1U << config->data_region_size_log2)
| NIOS2_MPUBASE_D;
uint32_t inst_mpubase = 1U << config->instruction_region_size_log2;
uint32_t mpuacc = NIOS2_MPUACC_WR;
int data_count = config->data_region_count;
int inst_count = config->instruction_region_count;
int i = 0;
_Nios2_MPU_Disable();
for ( i = 0; i < data_count; ++i ) {
uint32_t index = ((uint32_t) i) << NIOS2_MPUBASE_INDEX_OFFSET;
_Nios2_Set_ctlreg_mpubase( data_mpubase | index );
_Nios2_Set_ctlreg_mpuacc( mpuacc );
}
for ( i = 0; i < inst_count; ++i ) {
uint32_t index = ((uint32_t) i) << NIOS2_MPUBASE_INDEX_OFFSET;
_Nios2_Set_ctlreg_mpubase( inst_mpubase | index );
_Nios2_Set_ctlreg_mpuacc( mpuacc );
}
}
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