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Don't clean the minidata cache by default on XScale.

This commit is contained in:
matt 2001-09-05 16:14:49 +00:00
parent 4370f884b2
commit c9fd88afcf
1 changed files with 7 additions and 1 deletions
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8
sys/arch/arm/arm/cpufunc_asm.S
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@ -1,4 +1,4 @@
/* $NetBSD: cpufunc_asm.S,v 1.6 2001/08/30 01:15:39 matt Exp $ */ /* $NetBSD: cpufunc_asm.S,v 1.7 2001/09/05 16:14:49 matt Exp $ */
/* /*
* xscale support code Copyright (c) 2001 Matt Thomas * xscale support code Copyright (c) 2001 Matt Thomas
@ -771,6 +771,11 @@ Lxscale_cache_cleanD_loop:
subs r1, r1, #32 subs r1, r1, #32
bne Lxscale_cache_cleanD_loop bne Lxscale_cache_cleanD_loop
/*
* It's expected that we only use the minidata cache for kernel
* addresses, so there is no need to purge it on context switch
*/
#ifdef CACHE_CLEAN_MINIDATA
/* /*
* Clean mini-data-cache * Clean mini-data-cache
*/ */
@ -779,6 +784,7 @@ Lxscale_cache_cleanD_loop2:
ldr r3, [r0], #32 ldr r3, [r0], #32
subs r1, r1, #1 subs r1, r1, #1
bne Lxscale_cache_cleanD_loop2 bne Lxscale_cache_cleanD_loop2
#endif
mcr 15, 0, r0, c7, c10, 4 /* drain write buffer */ mcr 15, 0, r0, c7, c10, 4 /* drain write buffer */