wdenk | affae2b | 2002-08-17 09:36:01 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | |
| 26 | void flush_cache (ulong start_addr, ulong size) |
| 27 | { |
| 28 | ulong addr, end_addr = start_addr + size; |
| 29 | |
| 30 | if (CFG_CACHELINE_SIZE) { |
| 31 | addr = start_addr & (CFG_CACHELINE_SIZE - 1); |
| 32 | for (addr = start_addr; |
| 33 | addr < end_addr; |
| 34 | addr += CFG_CACHELINE_SIZE) { |
| 35 | asm ("dcbst 0,%0": :"r" (addr)); |
| 36 | } |
| 37 | asm ("sync"); /* Wait for all dcbst to complete on bus */ |
| 38 | |
| 39 | for (addr = start_addr; |
| 40 | addr < end_addr; |
| 41 | addr += CFG_CACHELINE_SIZE) { |
| 42 | asm ("icbi 0,%0": :"r" (addr)); |
| 43 | } |
| 44 | } |
| 45 | asm ("sync"); /* Always flush prefetch queue in any case */ |
| 46 | asm ("isync"); |
| 47 | } |