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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-13 03:28:11 (GMT) |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 07:13:24 (GMT) |
commit | 84ad688473bec2875e171b71040eb9e033c6c206 (patch) | |
tree | cf181129cbdf5d833d55262f759ea2cd9cafaff7 /arch/arm/cpu/arm720t/s3c4510b/cache.c | |
parent | 8f0fec74ac6d0f3a7134ccebafa1ed9bd8c712ba (diff) | |
download | u-boot-84ad688473bec2875e171b71040eb9e033c6c206.tar.xz |
arm: Move cpu/$CPU to arch/arm/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'arch/arm/cpu/arm720t/s3c4510b/cache.c')
-rw-r--r-- | arch/arm/cpu/arm720t/s3c4510b/cache.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm720t/s3c4510b/cache.c b/arch/arm/cpu/arm720t/s3c4510b/cache.c new file mode 100644 index 0000000..104d287 --- /dev/null +++ b/arch/arm/cpu/arm720t/s3c4510b/cache.c @@ -0,0 +1,86 @@ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Alex Zuepke <azu@sysgo.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/hardware.h> + +void icache_enable (void) +{ + s32 i; + + /* disable all cache bits */ + CLR_REG( REG_SYSCFG, 0x3F); + + /* 8KB cache, write enable */ + SET_REG( REG_SYSCFG, CACHE_WRITE_BUFF | CACHE_MODE_01); + + /* clear TAG RAM bits */ + for ( i = 0; i < 256; i++) + PUT_REG( CACHE_TAG_RAM + 4*i, 0x00000000); + + /* clear SET0 RAM */ + for(i=0; i < 1024; i++) + PUT_REG( CACHE_SET0_RAM + 4*i, 0x00000000); + + /* clear SET1 RAM */ + for(i=0; i < 1024; i++) + PUT_REG( CACHE_SET1_RAM + 4*i, 0x00000000); + + /* enable cache */ + SET_REG( REG_SYSCFG, CACHE_ENABLE); + +} + +void icache_disable (void) +{ + /* disable all cache bits */ + CLR_REG( REG_SYSCFG, 0x3F); +} + +int icache_status (void) +{ + return GET_REG( REG_SYSCFG) & CACHE_ENABLE; +} + +void dcache_enable (void) +{ + /* we don't have seperate instruction/data caches */ + icache_enable(); +} + +void dcache_disable (void) +{ + /* we don't have seperate instruction/data caches */ + icache_disable(); +} + +int dcache_status (void) +{ + /* we don't have seperate instruction/data caches */ + return icache_status(); +} |