jacking/bsp/cache.c

34 lines
1.4 KiB
C

/*
* Copyright (C) 2018 Marcus Comstedt
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <bsp/cache.h>
void Fx3CacheEnableCaches(void)
{
Fx3CacheInvalidateICacheAndDCache();
/* Set I and C bit in Control register */
uint32_t creg;
__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 0" : "=r"(creg));
creg |= (1UL << 12) | (1UL << 2);
__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 0" : : "r"(creg));
}