fix(cpus): workaround for Neoverse V2 erratum 2662553
Neoverse V2 erratum 2662553 is a Cat B erratum that applies to all
revisions <= r0p1 and is fixed in r0p2.
The workaround is to set L2 TQ size statically to it's full size.
SDEN documentation:
https://developer.arm.com/documentation/SDEN-2332927/latest
Change-Id: I3bc43e7299c17db8a6771a547515ffb2a172fa0f
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
diff --git a/lib/cpus/aarch64/neoverse_v2.S b/lib/cpus/aarch64/neoverse_v2.S
index bfd088d..aeb3b6d 100644
--- a/lib/cpus/aarch64/neoverse_v2.S
+++ b/lib/cpus/aarch64/neoverse_v2.S
@@ -29,6 +29,13 @@
check_erratum_ls neoverse_v2, ERRATUM(2331132), CPU_REV(0, 2)
+workaround_reset_start neoverse_v2, ERRATUM(2662553), ERRATA_V2_2662553
+ sysreg_bitfield_insert NEOVERSE_V2_CPUECTLR2_EL1, NEOVERSE_V2_CPUECTLR2_EL1_TXREQ_STATIC_FULL, \
+ NEOVERSE_V2_CPUECTLR2_EL1_TXREQ_LSB, NEOVERSE_V2_CPUECTLR2_EL1_TXREQ_WIDTH
+workaround_reset_end neoverse_v2, ERRATUM(2662553)
+
+check_erratum_ls neoverse_v2, ERRATUM(2662553), CPU_REV(0, 1)
+
workaround_reset_start neoverse_v2, ERRATUM(2719105), ERRATA_V2_2719105
sysreg_bit_set NEOVERSE_V2_CPUACTLR2_EL1, NEOVERSE_V2_CPUACTLR2_EL1_BIT_0
workaround_reset_end neoverse_v2, ERRATUM(2719105)
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 434ee08..aa57d09 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -826,6 +826,10 @@
# to revisions r0p0, r0p1 and r0p2. It is still open.
CPU_FLAG_LIST += ERRATA_V2_2331132
+# Flag to apply erratum 2662553 workaround during reset. This erratum applies
+# to revisions r0p0 and r0p1. It is fixed in r0p2.
+CPU_FLAG_LIST += ERRATA_V2_2662553
+
# Flag to apply erratum 2719103 workaround for non-arm interconnect ip. This
# erratum applies to revisions r0p0, rop1. Fixed in r0p2.
CPU_FLAG_LIST += ERRATA_V2_2719103