diff options
| author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 00:20:36 +0200 |
| commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
| tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/mm/cex-gen.S | |
| download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip | |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/mips/mm/cex-gen.S')
| -rw-r--r-- | arch/mips/mm/cex-gen.S | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/mips/mm/cex-gen.S b/arch/mips/mm/cex-gen.S new file mode 100644 index 000000000000..e743622fd24d --- /dev/null +++ b/arch/mips/mm/cex-gen.S @@ -0,0 +1,42 @@ +/* + * 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) |