/* ---------------------------------------------------------------------------- | |
* SAM Software Package License | |
* ---------------------------------------------------------------------------- | |
* Copyright (c) 2015, Atmel Corporation | |
* | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* - Redistributions of source code must retain the above copyright notice, | |
* this list of conditions and the disclaimer below. | |
* | |
* Atmel's name may not be used to endorse or promote products derived from | |
* this software without specific prior written permission. | |
* | |
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR | |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE | |
* DISCLAIMED. IN NO EVENT SHALL ATMEL 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. | |
* ---------------------------------------------------------------------------- | |
*/ | |
#include "peripherals/matrix.h" | |
#include <assert.h> | |
void matrix_configure_slave_sec(Matrix* mtx, uint8_t slave_id, | |
uint8_t sel_mask, uint8_t read_mask, | |
uint8_t write_mask) | |
{ | |
mtx->MATRIX_SSR[slave_id] = sel_mask | (read_mask << 8) | | |
(write_mask << 16); | |
} | |
void matrix_set_slave_split_addr(Matrix* mtx, uint8_t slave_id, | |
uint8_t area_size, uint8_t mask) | |
{ | |
uint8_t i = mask, j = 0; | |
uint32_t value = 0; | |
for (i = 1; (i <= mask) && (j < 32); i <<= 1, j += 4) { | |
if (i & mask) | |
value |= area_size << j; | |
} | |
mtx->MATRIX_SASSR[slave_id] = value; | |
} | |
void matrix_set_slave_region_size(Matrix* mtx, uint8_t slave_id, | |
uint8_t area_size, uint8_t mask) | |
{ | |
assert(slave_id != 0); | |
uint8_t i = mask, j = 0; | |
uint32_t value = 0; | |
for (i = 1; (i <= mask) && (j < 32 ); i <<= 1, j += 4) { | |
if (i & mask) | |
value |= area_size << j; | |
} | |
mtx->MATRIX_SRTSR[slave_id] = value; | |
} | |
uint8_t matrix_is_peripheral_secured(Matrix* mtx, uint32_t periph_id) | |
{ | |
if (mtx->MATRIX_SPSELR[periph_id / 32] & (1 << (periph_id % 32))) { | |
return 0; | |
} else { | |
return 1; | |
} | |
} | |
void matrix_remove_write_protection(Matrix* mtx) | |
{ | |
mtx->MATRIX_WPMR = MATRIX_WPMR_WPKEY_PASSWD; | |
} | |
/** | |
* \brief Changes the mapping of the chip so that the remap area mirrors the | |
* internal ROM or the EBI CS0. | |
*/ | |
void matrix_remap_rom(void) | |
{ | |
AXIMX->AXIMX_REMAP = 0; | |
} | |
/** | |
* \brief Changes the mapping of the chip so that the remap area mirrors the | |
* internal RAM. | |
*/ | |
void matrix_remap_ram(void) | |
{ | |
volatile uint32_t i; | |
AXIMX->AXIMX_REMAP = AXIMX_REMAP_REMAP0; | |
for(i=1000;--i;); | |
} |