diff options
| author | Rob Herring <rob.herring@calxeda.com> | 2013-10-09 17:26:44 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-29 11:06:13 +0000 |
| commit | 92871b94a5f9892e324c31960678387922c75049 (patch) | |
| tree | 8c47f2a0af3c2d21c71eeba12c843fb0eb7a4795 /arch/arm/include/asm/cputype.h | |
| parent | 0cbad9c9dfe0c38e8ec7385b39087c005a6dee3e (diff) | |
ARM: 7855/1: Add check for Cortex-A15 errata 798181 ECO
The work-around for A15 errata 798181 is not needed if appropriate ECO
fixes have been applied to r3p2 and earlier core revisions. This can be
checked by reading REVIDR register bits 4 and 9. If only bit 4 is set,
then the IPI broadcast can be skipped.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/cputype.h')
| -rw-r--r-- | arch/arm/include/asm/cputype.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h index 9672e978d50d..acdde76b39bb 100644 --- a/arch/arm/include/asm/cputype.h +++ b/arch/arm/include/asm/cputype.h @@ -10,6 +10,7 @@ #define CPUID_TLBTYPE 3 #define CPUID_MPUIR 4 #define CPUID_MPIDR 5 +#define CPUID_REVIDR 6 #ifdef CONFIG_CPU_V7M #define CPUID_EXT_PFR0 0x40 |