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/*
* (C) Copyright 2008-2010 Freescale Semiconductor, Inc.
*
* (C) Copyright 2002
* 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/system.h>
#if !(defined(CONFIG_SYS_NO_ICACHE) && defined(CONFIG_SYS_NO_DCACHE))
#define cp_delay() \
{ \
volatile int i; \
/* copro seems to need some delay between reading and writing */ \
for (i = 0; i < 100; i++) \
nop(); \
}
/* cache_bit must be either CR_I or CR_C */
#define cache_enable(cache_bit) \
{ \
uint32_t reg; \
reg = get_cr(); /* get control reg. */ \
set_cr(reg | cache_bit); \
cp_delay(); \
}
/* cache_bit must be either CR_I or CR_C */
#define cache_disable(cache_bit) \
{ \
uint32_t reg; \
reg = get_cr(); \
set_cr(reg & ~cache_bit); \
cp_delay(); \
}
#endif
#ifdef CONFIG_SYS_NO_ICACHE
#define icache_enable()
#define icache_disable()
#define icache_status()
#else
#define icache_enable() (cache_enable(CR_I))
#define icache_disable() (cache_disable(CR_I))
#define icache_status() ((get_cr() & CR_I) != 0)
#endif
#ifdef CONFIG_SYS_NO_DCACHE
#define dcache_enable()
#define dcache_disable()
#define dcache_status()
#else
#define dcache_enable() (cache_enable(CR_C))
#define dcache_disable() \
{ \
cache_disable(CR_C); \
}
#define dcache_status() ((get_cr() & CR_C) != 0)
#endif
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