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/*
* (C) Copyright 2007 Michal Simek
*
* Michal SIMEK <monstr@monstr.eu>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/asm.h>
int dcache_status (void)
{
int i = 0;
int mask = 0x80;
__asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory");
/* i&=0x80 */
__asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory");
return i;
}
int icache_status (void)
{
int i = 0;
int mask = 0x20;
__asm__ __volatile__ ("mfs %0,rmsr"::"r" (i):"memory");
/* i&=0x20 */
__asm__ __volatile__ ("and %0,%0,%1"::"r" (i), "r" (mask):"memory");
return i;
}
void icache_enable (void) {
MSRSET(0x20);
}
void icache_disable(void) {
/* we are not generate ICACHE size -> flush whole cache */
flush_cache(0, 32768);
MSRCLR(0x20);
}
void dcache_enable (void) {
MSRSET(0x80);
}
void dcache_disable(void) {
#ifdef XILINX_USE_DCACHE
#ifdef XILINX_DCACHE_BYTE_SIZE
flush_cache(0, XILINX_DCACHE_BYTE_SIZE);
#else
#warning please rebuild BSPs and update configuration
flush_cache(0, 32768);
#endif
#endif
MSRCLR(0x80);
}
void flush_cache (ulong addr, ulong size)
{
int i;
for (i = 0; i < size; i += 4)
asm volatile (
#ifdef CONFIG_ICACHE
"wic %0, r0;"
#endif
"nop;"
#ifdef CONFIG_DCACHE
"wdc.flush %0, r0;"
#endif
"nop;"
:
: "r" (addr + i)
: "memory");
}
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