fix(errata): workaround for Cortex-A510 erratum 2371937
Cortex-A510 erratum 2371937 is a Cat B erratum that applies
to revisions r0p0, r0p1, r0p2, r0p3, r1p0, and r1p1. It is
fixed in r1p2. The workaround is to set the ATOM field of
CPUECTLR_EL1 (bits [40:38]) to 0b010, which will force all
cacheable atomic operations to be executed near.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1873351/latest
https://developer.arm.com/documentation/SDEN1873361/latest
Signed-off-by: Akram Ahmad <Akram.Ahmad@arm.com>
Change-Id: Ia219a609a3397e39631de65831ecff8a3cd1227e
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 3e5e92a..8964b41 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -645,6 +645,10 @@
# to revisions r0p0, r0p1, r0p2, r0p3 and r1p0, and is fixed in r1p1.
ERRATA_A510_2172148 ?=0
+# Flag to apply erratum 2371937 workaround during reset. This erratum applies
+# to revisions r0p0, r0p1, r0p2, r0p3, r1p0, and r1p1. It is fixed in r1p2.
+ERRATA_A510_2371937 ?=0
+
# Flag to apply DSU erratum 798953. This erratum applies to DSUs revision r0p0.
# Applying the workaround results in higher DSU power consumption on idle.
ERRATA_DSU_798953 ?=0
@@ -1215,6 +1219,10 @@
$(eval $(call assert_boolean,ERRATA_A510_2172148))
$(eval $(call add_define,ERRATA_A510_2172148))
+# Process ERRATA_A510_2371937 flag
+$(eval $(call assert_boolean,ERRATA_A510_2371937))
+$(eval $(call add_define,ERRATA_A510_2371937))
+
# Process ERRATA_DSU_798953 flag
$(eval $(call assert_boolean,ERRATA_DSU_798953))
$(eval $(call add_define,ERRATA_DSU_798953))