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42 lines
1006 B
42 lines
1006 B
/* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file "COPYING" in the main directory of this archive |
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* for more details. |
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* |
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* Copyright (C) 1995 - 1999 Ralf Baechle |
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* Copyright (C) 1999 Silicon Graphics, Inc. |
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* |
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* Cache error handler |
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*/ |
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#include <asm/asm.h> |
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#include <asm/regdef.h> |
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#include <asm/mipsregs.h> |
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#include <asm/stackframe.h> |
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/* |
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* Game over. Go to the button. Press gently. Swear where allowed by |
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* legislation. |
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*/ |
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LEAF(except_vec2_generic) |
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.set noreorder |
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.set noat |
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.set mips0 |
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/* |
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* This is a very bad place to be. Our cache error |
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* detection has triggered. If we have write-back data |
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* in the cache, we may not be able to recover. As a |
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* first-order desperate measure, turn off KSEG0 cacheing. |
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*/ |
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mfc0 k0,CP0_CONFIG |
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li k1,~CONF_CM_CMASK |
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and k0,k0,k1 |
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ori k0,k0,CONF_CM_UNCACHED |
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mtc0 k0,CP0_CONFIG |
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/* Give it a few cycles to sink in... */ |
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nop |
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nop |
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nop |
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j cache_parity_error |
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nop |
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END(except_vec2_generic)
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