fix(cpus): workaround for Neoverse V2 erratum 2719105
Neoverse V2 erratum 2719105 is a Cat B erratum that applies to all
revisions <= r0p1 and is fixed in r0p2.
The erratum is avoided by setting CPUACTLR2_EL1[0] to 1 to force
PLDW/PFRM ST to behave like PLD/PRFM LD and not cause invalidations
to other PE caches. There might be a small performance degradation
to this workaround for certain workloads that share data.
SDEN documentation:
https://developer.arm.com/documentation/SDEN2332927/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Id026edcb7ee1ca93371ce0001d18f5a8282c49ba
diff --git a/services/std_svc/errata_abi/errata_abi_main.c b/services/std_svc/errata_abi/errata_abi_main.c
index 1bf0a73..7d2c404 100644
--- a/services/std_svc/errata_abi/errata_abi_main.c
+++ b/services/std_svc/errata_abi/errata_abi_main.c
@@ -402,8 +402,9 @@
[0] = {2331132, 0x00, 0x02, ERRATA_V2_2331132},
[1] = {2719103, 0x00, 0x01, ERRATA_V2_2719103, \
ERRATA_NON_ARM_INTERCONNECT},
- [2] = {2801372, 0x00, 0x01, ERRATA_V2_2801372},
- [3 ... ERRATA_LIST_END] = UNDEF_ERRATA,
+ [2] = {2719105, 0x00, 0x01, ERRATA_V2_2719105},
+ [3] = {2801372, 0x00, 0x01, ERRATA_V2_2801372},
+ [4 ... ERRATA_LIST_END] = UNDEF_ERRATA,
}
},
#endif /* NEOVERSE_V2_H_INC */