arm64: add Cortex-A53 cache errata workaround

[deliverable/linux.git] / arch / arm64 / include / asm / cputype.h

diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h
index 379d0b874328caa7f59dae03f7f08659b81eebdf..8adb986a3086a3ee75e83aa165fe7273cf3575f0 100644 (file)
--- a/arch/arm64/include/asm/cputype.h
+++ b/arch/arm64/include/asm/cputype.h
@@ -57,6 +57,11 @@
 #define MIDR_IMPLEMENTOR(midr) \
        (((midr) & MIDR_IMPLEMENTOR_MASK) >> MIDR_IMPLEMENTOR_SHIFT)
 
+#define MIDR_CPU_PART(imp, partnum) \
+       (((imp)                 << MIDR_IMPLEMENTOR_SHIFT) | \
+       (0xf                    << MIDR_ARCHITECTURE_SHIFT) | \
+       ((partnum)              << MIDR_PARTNUM_SHIFT))
+
 #define ARM_CPU_IMP_ARM                0x41
 #define ARM_CPU_IMP_APM                0x50