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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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/immap.h>
#include <asm/cache.h>
volatile int *cf_icache_status = (int *)ICACHE_STATUS;
volatile int *cf_dcache_status = (int *)DCACHE_STATUS;
void flush_cache(ulong start_addr, ulong size)
/* Must be implemented for all M68k processors with copy-back data cache */
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int icache_status(void)
{
return *cf_icache_status;
}
int dcache_status(void)
{
return *cf_dcache_status;
}
void icache_enable(void)
{
icache_invalid();
*cf_icache_status = 1;
#ifdef CONFIG_CF_V4
__asm__ __volatile__("movec %0, %%acr2"::"r"(CONFIG_SYS_CACHE_ACR2));
__asm__ __volatile__("movec %0, %%acr3"::"r"(CONFIG_SYS_CACHE_ACR3));
#elif defined(CONFIG_CF_V4e)
__asm__ __volatile__("movec %0, %%acr6"::"r"(CONFIG_SYS_CACHE_ACR6));
__asm__ __volatile__("movec %0, %%acr7"::"r"(CONFIG_SYS_CACHE_ACR7));
#else
__asm__ __volatile__("movec %0, %%acr0"::"r"(CONFIG_SYS_CACHE_ACR0));
__asm__ __volatile__("movec %0, %%acr1"::"r"(CONFIG_SYS_CACHE_ACR1));
#endif
__asm__ __volatile__("movec %0, %%cacr"::"r"(CONFIG_SYS_CACHE_ICACR));
}
void icache_disable(void)
{
u32 temp = 0;
*cf_icache_status = 0;
icache_invalid();
#ifdef CONFIG_CF_V4
__asm__ __volatile__("movec %0, %%acr2"::"r"(temp));
__asm__ __volatile__("movec %0, %%acr3"::"r"(temp));
#elif defined(CONFIG_CF_V4e)
__asm__ __volatile__("movec %0, %%acr6"::"r"(temp));
__asm__ __volatile__("movec %0, %%acr7"::"r"(temp));
#else
__asm__ __volatile__("movec %0, %%acr0"::"r"(temp));
__asm__ __volatile__("movec %0, %%acr1"::"r"(temp));
#endif
}
void icache_invalid(void)
{
u32 temp;
temp = CONFIG_SYS_ICACHE_INV;
if (*cf_icache_status)
temp |= CONFIG_SYS_CACHE_ICACR;
__asm__ __volatile__("movec %0, %%cacr"::"r"(temp));
}
/*
* data cache only for ColdFire V4 such as MCF547x_8x, MCF5445x
* the dcache will be dummy in ColdFire V2 and V3
*/
void dcache_enable(void)
{
dcache_invalid();
*cf_dcache_status = 1;
#ifdef CONFIG_CF_V4
__asm__ __volatile__("movec %0, %%acr0"::"r"(CONFIG_SYS_CACHE_ACR0));
__asm__ __volatile__("movec %0, %%acr1"::"r"(CONFIG_SYS_CACHE_ACR1));
#elif defined(CONFIG_CF_V4e)
__asm__ __volatile__("movec %0, %%acr4"::"r"(CONFIG_SYS_CACHE_ACR4));
__asm__ __volatile__("movec %0, %%acr5"::"r"(CONFIG_SYS_CACHE_ACR5));
#endif
__asm__ __volatile__("movec %0, %%cacr"::"r"(CONFIG_SYS_CACHE_DCACR));
}
void dcache_disable(void)
{
u32 temp = 0;
*cf_dcache_status = 0;
dcache_invalid();
__asm__ __volatile__("movec %0, %%cacr"::"r"(temp));
#ifdef CONFIG_CF_V4
__asm__ __volatile__("movec %0, %%acr0"::"r"(temp));
__asm__ __volatile__("movec %0, %%acr1"::"r"(temp));
#elif defined(CONFIG_CF_V4e)
__asm__ __volatile__("movec %0, %%acr4"::"r"(temp));
__asm__ __volatile__("movec %0, %%acr5"::"r"(temp));
#endif
}
void dcache_invalid(void)
{
#ifdef CONFIG_CF_V4
u32 temp;
temp = CONFIG_SYS_DCACHE_INV;
if (*cf_dcache_status)
temp |= CONFIG_SYS_CACHE_DCACR;
if (*cf_icache_status)
temp |= CONFIG_SYS_CACHE_ICACR;
__asm__ __volatile__("movec %0, %%cacr"::"r"(temp));
#endif
}