diff options
| author | Bipin Ravi <bipin.ravi@arm.com> | 2023-09-18 17:27:29 -0500 |
|---|---|---|
| committer | Bipin Ravi <bipin.ravi@arm.com> | 2023-09-18 17:43:51 -0500 |
| commit | b01140256b5c0620cbde8e98c0df0e95343a3c71 (patch) | |
| tree | 5429297d689ee04b06add987d8c17f6d0ae76fc1 /lib/cpus/cpu-ops.mk | |
| parent | 8852fb5b7d94229475446c81cfa58851bc2204ff (diff) | |
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
Diffstat (limited to 'lib/cpus/cpu-ops.mk')
| -rw-r--r-- | lib/cpus/cpu-ops.mk | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk index 183c178fc..977e3aaef 100644 --- a/lib/cpus/cpu-ops.mk +++ b/lib/cpus/cpu-ops.mk @@ -794,6 +794,10 @@ CPU_FLAG_LIST += ERRATA_V2_2331132 # erratum applies to revisions r0p0, rop1. Fixed in r0p2. CPU_FLAG_LIST += ERRATA_V2_2719103 +# Flag to apply erratum 2719105 workaround during reset. This erratum applies +# to revisions r0p0 and r0p1. It is fixed in r0p2. +CPU_FLAG_LIST += ERRATA_V2_2719105 + # Flag to apply erratum 2801372 workaround for all configurations. # This erratum applies to revisions r0p0, r0p1. Fixed in r0p2. CPU_FLAG_LIST += ERRATA_V2_2801372 |