diff options
Diffstat (limited to 'lib_nios2/cache.S')
| -rw-r--r-- | lib_nios2/cache.S | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/lib_nios2/cache.S b/lib_nios2/cache.S new file mode 100644 index 0000000..eb7735a --- /dev/null +++ b/lib_nios2/cache.S @@ -0,0 +1,74 @@ +/* + * (C) Copyright 2004, Psyent Corporation <www.psyent.com> + * Scott McNutt <smcnutt@psyent.com> + * + * 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 <config.h> + + .text + + .global flush_dcache + +flush_dcache: + add r5, r5, r4 + movhi r8, %hi(CFG_DCACHELINE_SIZE) + ori r8, r8, %lo(CFG_DCACHELINE_SIZE) +0: flushd 0(r4) + add r4, r4, r8 + bltu r4, r5, 0b + ret + + + .global flush_icache + +flush_icache: + add r5, r5, r4 + movhi r8, %hi(CFG_ICACHELINE_SIZE) + ori r8, r8, %lo(CFG_ICACHELINE_SIZE) +1: flushi r4 + add r4, r4, r8 + bltu r4, r5, 1b + ret + + .global flush_cache + +flush_cache: + add r5, r5, r4 + mov r9, r4 + mov r10, r5 + + movhi r8, %hi(CFG_DCACHELINE_SIZE) + ori r8, r8, %lo(CFG_DCACHELINE_SIZE) +0: flushd 0(r4) + add r4, r4, r8 + bltu r4, r5, 0b + + mov r4, r9 + mov r5, r10 + movhi r8, %hi(CFG_ICACHELINE_SIZE) + ori r8, r8, %lo(CFG_ICACHELINE_SIZE) +1: flushi r4 + add r4, r4, r8 + bltu r4, r5, 1b + + sync + flushp + ret |