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armv7: s5pc1xx: improve cache handling 

Move cache handling code to C file, and add enable_caches() and
disable_caches() functions.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Robert Baldyga 2014-09-19 12:17:55 +02:00 committed by Minkyu Kang
parent 2ecd779742
commit dab067c323
2 changed files with 47 additions and 30 deletions
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30
arch/arm/cpu/armv7/s5pc1xx/cache.S
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@ -1,30 +0,0 @@
/*
* Copyright (C) 2009 Samsung Electronics
* Minkyu Kang <mk7.kang@samsung.com>
*
* based on arch/arm/cpu/armv7/omap3/cache.S
*
* SPDX-License-Identifier: GPL-2.0+
*/
.align 5
#include <linux/linkage.h>
#ifndef CONFIG_SYS_L2CACHE_OFF
ENTRY(v7_outer_cache_enable)
push {r0, r1, r2, lr}
mrc 15, 0, r3, cr1, cr0, 1
orr r3, r3, #2
mcr 15, 0, r3, cr1, cr0, 1
pop {r1, r2, r3, pc}
ENDPROC(v7_outer_cache_enable)
ENTRY(v7_outer_cache_disable)
push {r0, r1, r2, lr}
mrc 15, 0, r3, cr1, cr0, 1
bic r3, r3, #2
mcr 15, 0, r3, cr1, cr0, 1
pop {r1, r2, r3, pc}
ENDPROC(v7_outer_cache_disable)
#endif

47
arch/arm/cpu/armv7/s5pc1xx/cache.c Normal file
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@ -0,0 +1,47 @@
/*
* Copyright (C) 2014 Samsung Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Robert Baldyga <r.baldyga@samsung.com>
*
* based on arch/arm/cpu/armv7/omap3/cache.S
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
dcache_enable();
}
void disable_caches(void)
{
dcache_disable();
}
#endif
#ifndef CONFIG_SYS_L2CACHE_OFF
void v7_outer_cache_enable(void)
{
__asm(
"push {r0, r1, r2, lr}\n\t"
"mrc 15, 0, r3, cr1, cr0, 1\n\t"
"orr r3, r3, #2\n\t"
"mcr 15, 0, r3, cr1, cr0, 1\n\t"
"pop {r1, r2, r3, pc}"
);
}
void v7_outer_cache_disable(void)
{
__asm(
"push {r0, r1, r2, lr}\n\t"
"mrc 15, 0, r3, cr1, cr0, 1\n\t"
"bic r3, r3, #2\n\t"
"mcr 15, 0, r3, cr1, cr0, 1\n\t"
"pop {r1, r2, r3, pc}"
);
}
#endif