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Diffstat (limited to 'arch/mips/include/asm/war.h')
-rw-r--r-- | arch/mips/include/asm/war.h | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/arch/mips/include/asm/war.h b/arch/mips/include/asm/war.h deleted file mode 100644 index 21443f096238..000000000000 --- a/arch/mips/include/asm/war.h +++ /dev/null @@ -1,73 +0,0 @@ -/* - * 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) 2002, 2004, 2007 by Ralf Baechle - * Copyright (C) 2007 Maciej W. Rozycki - */ -#ifndef _ASM_WAR_H -#define _ASM_WAR_H - -/* - * Work around certain R4000 CPU errata (as implemented by GCC): - * - * - A double-word or a variable shift may give an incorrect result - * if executed immediately after starting an integer division: - * "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", - * erratum #28 - * "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum - * #19 - * - * - A double-word or a variable shift may give an incorrect result - * if executed while an integer multiplication is in progress: - * "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", - * errata #16 & #28 - * - * - An integer division may give an incorrect result if started in - * a delay slot of a taken branch or a jump: - * "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", - * erratum #52 - */ -#ifdef CONFIG_CPU_R4000_WORKAROUNDS -#define R4000_WAR 1 -#else -#define R4000_WAR 0 -#endif - -/* - * Work around certain R4400 CPU errata (as implemented by GCC): - * - * - A double-word or a variable shift may give an incorrect result - * if executed immediately after starting an integer division: - * "MIPS R4400MC Errata, Processor Revision 1.0", erratum #10 - * "MIPS R4400MC Errata, Processor Revision 2.0 & 3.0", erratum #4 - */ -#ifdef CONFIG_CPU_R4400_WORKAROUNDS -#define R4400_WAR 1 -#else -#define R4400_WAR 0 -#endif - -/* - * Work around the "daddi" and "daddiu" CPU errata: - * - * - The `daddi' instruction fails to trap on overflow. - * "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", - * erratum #23 - * - * - The `daddiu' instruction can produce an incorrect result. - * "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", - * erratum #41 - * "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum - * #15 - * "MIPS R4400PC/SC Errata, Processor Revision 1.0", erratum #7 - * "MIPS R4400MC Errata, Processor Revision 1.0", erratum #5 - */ -#ifdef CONFIG_CPU_DADDI_WORKAROUNDS -#define DADDI_WAR 1 -#else -#define DADDI_WAR 0 -#endif - -#endif /* _ASM_WAR_H */ |