| Jean-Christophe PLAGNIOL-VILLARD | 281dfb0 | 2009-03-29 23:01:36 +0200 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| 4 | * Marius Groeger <mgroeger@sysgo.de> |
| 5 | * |
| 6 | * (C) Copyright 2002 |
| 7 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| 8 | * Alex Zuepke <azu@sysgo.de> |
| 9 | * |
| 10 | * See file CREDITS for list of people who contributed to this |
| 11 | * project. |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or |
| 14 | * modify it under the terms of the GNU General Public License as |
| 15 | * published by the Free Software Foundation; either version 2 of |
| 16 | * the License, or (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 26 | * MA 02111-1307 USA |
| 27 | */ |
| 28 | |
| 29 | #include <common.h> |
| 30 | #include <asm/hardware.h> |
| 31 | |
| 32 | void icache_enable (void) |
| 33 | { |
| 34 | s32 i; |
| 35 | |
| 36 | /* disable all cache bits */ |
| 37 | CLR_REG( REG_SYSCFG, 0x3F); |
| 38 | |
| 39 | /* 8KB cache, write enable */ |
| 40 | SET_REG( REG_SYSCFG, CACHE_WRITE_BUFF | CACHE_MODE_01); |
| 41 | |
| 42 | /* clear TAG RAM bits */ |
| 43 | for ( i = 0; i < 256; i++) |
| 44 | PUT_REG( CACHE_TAG_RAM + 4*i, 0x00000000); |
| 45 | |
| 46 | /* clear SET0 RAM */ |
| 47 | for(i=0; i < 1024; i++) |
| 48 | PUT_REG( CACHE_SET0_RAM + 4*i, 0x00000000); |
| 49 | |
| 50 | /* clear SET1 RAM */ |
| 51 | for(i=0; i < 1024; i++) |
| 52 | PUT_REG( CACHE_SET1_RAM + 4*i, 0x00000000); |
| 53 | |
| 54 | /* enable cache */ |
| 55 | SET_REG( REG_SYSCFG, CACHE_ENABLE); |
| 56 | |
| 57 | } |
| 58 | |
| 59 | void icache_disable (void) |
| 60 | { |
| 61 | /* disable all cache bits */ |
| 62 | CLR_REG( REG_SYSCFG, 0x3F); |
| 63 | } |
| 64 | |
| 65 | int icache_status (void) |
| 66 | { |
| 67 | return GET_REG( REG_SYSCFG) & CACHE_ENABLE; |
| 68 | } |
| 69 | |
| 70 | void dcache_enable (void) |
| 71 | { |
| 72 | /* we don't have seperate instruction/data caches */ |
| 73 | icache_enable(); |
| 74 | } |
| 75 | |
| 76 | void dcache_disable (void) |
| 77 | { |
| 78 | /* we don't have seperate instruction/data caches */ |
| 79 | icache_disable(); |
| 80 | } |
| 81 | |
| 82 | int dcache_status (void) |
| 83 | { |
| 84 | /* we don't have seperate instruction/data caches */ |
| 85 | return icache_status(); |
| 86 | } |