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cypress_cache_enable: clear bits explicitly before setting.

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pk 1997-03-21 15:35:51 +00:00
parent d584dba41d
commit 1bc742e6dd
1 changed files with 4 additions and 2 deletions
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6
sys/arch/sparc/sparc/cache.c
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@ -1,4 +1,4 @@
/* $NetBSD: cache.c,v 1.20 1997/03/21 14:30:19 pk Exp $ */
/* $NetBSD: cache.c,v 1.21 1997/03/21 15:35:51 pk Exp $ */
/*
* Copyright (c) 1996
@ -214,17 +214,19 @@ void
cypress_cache_enable()
{
u_int scr;
cache_alias_dist = CACHEINFO.c_totalsize;
cache_alias_bits = (cache_alias_dist - 1) & ~PGOFSET;
scr = lda(SRMMU_PCR, ASI_SRMMU);
scr &= ~(SRMMU_PCR_CE | SRMMU_PCR_CM);
scr |= SRMMU_PCR_CE;
/* If put in write-back mode, turn it on */
if (CACHEINFO.c_vactype == VAC_WRITEBACK)
scr |= SRMMU_PCR_CM;
sta(SRMMU_PCR, ASI_SRMMU, scr);
CACHEINFO.c_enabled = 1;
printf("cache WRITE-THRU enabled\n");
printf("cache enabled\n");
}
/*