diff options
| author | Bipin Ravi <bipin.ravi@arm.com> | 2023-10-17 06:21:15 -0500 |
|---|---|---|
| committer | laurenw-arm <lauren.wehrmeister@arm.com> | 2023-11-02 10:12:36 -0500 |
| commit | 68085ad4827ac7daa39767d479d0565daa32cb47 (patch) | |
| tree | 814d4dede917f9275b7e1aa010b6930b21b37af1 /lib/cpus | |
| parent | 6cb8be17a53f4e11880ba13b78fca15895281cfe (diff) | |
fix(cpus): workaround for Neoverse N2 erratum 2340933
Neoverse N2 erratum 2340933 is a Cat B erratum that applies to
revision r0p0 and is fixed in r0p1. The workaround is to set
CPUACTLR5_EL1[61] to 1.
SDEN documentation:
https://developer.arm.com/documentation/SDEN-1982442/latest
Change-Id: I121add0dd35072c53392d33f049d893a5ff6354f
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Diffstat (limited to 'lib/cpus')
| -rw-r--r-- | lib/cpus/aarch64/neoverse_n2.S | 7 | ||||
| -rw-r--r-- | lib/cpus/cpu-ops.mk | 6 |
2 files changed, 12 insertions, 1 deletions
diff --git a/lib/cpus/aarch64/neoverse_n2.S b/lib/cpus/aarch64/neoverse_n2.S index f80115177..477522fed 100644 --- a/lib/cpus/aarch64/neoverse_n2.S +++ b/lib/cpus/aarch64/neoverse_n2.S @@ -165,6 +165,13 @@ workaround_runtime_end neoverse_n2, ERRATUM(2326639) check_erratum_ls neoverse_n2, ERRATUM(2326639), CPU_REV(0, 0) +workaround_runtime_start neoverse_n2, ERRATUM(2340933), ERRATA_N2_2340933 + /* Set bit 61 in CPUACTLR5_EL1 */ + sysreg_bit_set NEOVERSE_N2_CPUACTLR5_EL1, BIT(61) +workaround_runtime_end neoverse_n2, ERRATUM(2340933) + +check_erratum_ls neoverse_n2, ERRATUM(2340933), CPU_REV(0, 0) + workaround_runtime_start neoverse_n2, ERRATUM(2346952), ERRATA_N2_2346952 /* Set TXREQ to STATIC and full L2 TQ size */ mrs x1, NEOVERSE_N2_CPUECTLR2_EL1 diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk index 92c6aa491..39e90cae5 100644 --- a/lib/cpus/cpu-ops.mk +++ b/lib/cpus/cpu-ops.mk @@ -656,10 +656,14 @@ CPU_FLAG_LIST += ERRATA_N2_2242400 # to revision r0p0 of the Neoverse N2 cpu and is fixed in r0p1. CPU_FLAG_LIST += ERRATA_N2_2280757 -# Flag to apply erraturm 2326639 workaroud during powerdown. This erratum +# Flag to apply erratum 2326639 workaroud during powerdown. This erratum # applies to revision r0p0 of the Neoverse N2 cpu and is fixed in r0p1. CPU_FLAG_LIST += ERRATA_N2_2326639 +# Flag to apply erratum 2340933 workaroud during reset. This erratum +# applies to revision r0p0 of the Neoverse N2 cpu and is fixed in r0p1. +CPU_FLAG_LIST += ERRATA_N2_2340933 + # Flag to apply erratum 2346952 workaround during reset. This erratum applies # to r0p0, r0p1, r0p2 of the Neoverse N2 cpu, it is fixed in r0p3. CPU_FLAG_LIST += ERRATA_N2_2346952 |