diff options
Diffstat (limited to 'bsps/sparc64/shared/helenos/kernel/sparc64/src/cache.S')
| -rw-r--r-- | bsps/sparc64/shared/helenos/kernel/sparc64/src/cache.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/bsps/sparc64/shared/helenos/kernel/sparc64/src/cache.S b/bsps/sparc64/shared/helenos/kernel/sparc64/src/cache.S new file mode 100644 index 0000000000..0aff799c50 --- /dev/null +++ b/bsps/sparc64/shared/helenos/kernel/sparc64/src/cache.S @@ -0,0 +1,49 @@ +/* + * Copyright (c) 2006 Jakub Jermar + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * - The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include <rtems/asm.h> +#include <arch/arch.h> +#include <arch/mm/cache_spec.h> + +#define DCACHE_TAG_SHIFT 2 + +.register %g2, #scratch +.register %g3, #scratch + +/** Flush the whole D-cache. */ +.global dcache_flush +dcache_flush: + set (DCACHE_SIZE - DCACHE_LINE_SIZE), %g1 + stxa %g0, [%g1] ASI_DCACHE_TAG +0: membar #Sync + subcc %g1, DCACHE_LINE_SIZE, %g1 + bnz,pt %xcc, 0b + stxa %g0, [%g1] ASI_DCACHE_TAG + membar #Sync + retl + ! beware SF Erratum #51, do not put the MEMBAR here + nop |