| /* |
| * 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 caching. |
| */ |
| 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) |
