diff options
author | wdenk <wdenk> | 2002-08-17 09:36:01 +0000 |
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committer | wdenk <wdenk> | 2002-08-17 09:36:01 +0000 |
commit | affae2bff825c1a8d2cfeaf7b270188d251d39d2 (patch) | |
tree | e025ca5a84cdcd70cff986e09f89e1aaa360499c /lib_ppc/cache.c | |
parent | cf356ef708390102d493c53d18fd19a5963c6aa9 (diff) |
Initial revision
Diffstat (limited to 'lib_ppc/cache.c')
-rw-r--r-- | lib_ppc/cache.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/lib_ppc/cache.c b/lib_ppc/cache.c new file mode 100644 index 00000000000..bec092e4ceb --- /dev/null +++ b/lib_ppc/cache.c @@ -0,0 +1,47 @@ +/* + * (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> + +void flush_cache (ulong start_addr, ulong size) +{ + ulong addr, end_addr = start_addr + size; + + if (CFG_CACHELINE_SIZE) { + addr = start_addr & (CFG_CACHELINE_SIZE - 1); + for (addr = start_addr; + addr < end_addr; + addr += CFG_CACHELINE_SIZE) { + asm ("dcbst 0,%0": :"r" (addr)); + } + asm ("sync"); /* Wait for all dcbst to complete on bus */ + + for (addr = start_addr; + addr < end_addr; + addr += CFG_CACHELINE_SIZE) { + asm ("icbi 0,%0": :"r" (addr)); + } + } + asm ("sync"); /* Always flush prefetch queue in any case */ + asm ("isync"); +} |