fix(cpus): workaround for Neoverse V2 erratum 2779510
Neoverse V2 erratum 2779510 is a Cat B erratum that applies to
all revisions <= r0p1 and is fixed in r0p2. The workaround is to
set bit[47] of CPUACTLR3_EL1 which might have a small impact on
power and negligible impact on performance.
SDEN documentation:
https://developer.arm.com/documentation/SDEN2332927/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: I6d937747bdcbf2913a64c4037f99918cbc466e80
diff --git a/include/lib/cpus/aarch64/neoverse_v2.h b/include/lib/cpus/aarch64/neoverse_v2.h
index 2adddb6..5b06c06 100644
--- a/include/lib/cpus/aarch64/neoverse_v2.h
+++ b/include/lib/cpus/aarch64/neoverse_v2.h
@@ -37,4 +37,10 @@
#define NEOVERSE_V2_CPUACTLR2_EL1 S3_0_C15_C1_1
#define NEOVERSE_V2_CPUACTLR2_EL1_BIT_0 (ULL(1) << 0)
+/*******************************************************************************
+ * CPU Auxiliary Control register 3 specific definitions.
+ ******************************************************************************/
+#define NEOVERSE_V2_CPUACTLR3_EL1 S3_0_C15_C1_2
+#define NEOVERSE_V2_CPUACTLR3_EL1_BIT_47 (ULL(1) << 47)
+
#endif /* NEOVERSE_V2_H */