/*
|
* This file is subject to the terms and conditions of the GNU General Public
|
* License. See the file "COPYING" in the main directory of this archive
|
* for more details.
|
*
|
* Copyright (C) 1995 - 1999 Ralf Baechle
|
* Copyright (C) 1999 Silicon Graphics, Inc.
|
*
|
* Cache error handler
|
*/
|
#include <asm/asm.h>
|
#include <asm/regdef.h>
|
#include <asm/mipsregs.h>
|
#include <asm/stackframe.h>
|
|
/*
|
* Game over. Go to the button. Press gently. Swear where allowed by
|
* legislation.
|
*/
|
LEAF(except_vec2_generic)
|
.set noreorder
|
.set noat
|
.set mips0
|
/*
|
* This is a very bad place to be. Our cache error
|
* detection has triggered. If we have write-back data
|
* in the cache, we may not be able to recover. As a
|
* first-order desperate measure, turn off KSEG0 cacheing.
|
*/
|
mfc0 k0,CP0_CONFIG
|
li k1,~CONF_CM_CMASK
|
and k0,k0,k1
|
ori k0,k0,CONF_CM_UNCACHED
|
mtc0 k0,CP0_CONFIG
|
/* Give it a few cycles to sink in... */
|
nop
|
nop
|
nop
|
|
j cache_parity_error
|
nop
|
END(except_vec2_generic)
|
