fix(errata): workaround for Cortex-A710 erratum 2267065
Cortex-A710 erratum 2267065 is a Cat B erratum that applies to
revisions r0p0, r1p0 and r2p0 of the CPU. It is fixed in r2p1.
The workaround is to set CPUACTLR_EL1[22] to 1'b1. Setting
CPUACTLR_EL1[22] will cause the CFP instruction to invalidate
all branch predictor resources regardless of context.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775101/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: Ia9085aaf9b2b6a2b25d03ab36bd3774839fac9aa
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index f1c4c90..118b00d 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -495,6 +495,10 @@
# to revision r0p0, r1p0 and r2p0 of the Cortex-A710 cpu and is still open.
ERRATA_A710_2017096 ?=0
+# Flag to apply erratum 2267065 workaround during reset. This erratum applies
+# to revision r0p0, r1p0 and r2p0 of the Cortex-A710 cpu and is fixed in r2p1.
+ERRATA_A710_2267065 ?=0
+
# Flag to apply erratum 2002765 workaround during reset. This erratum applies
# to revisions r0p0, r1p0, and r2p0 of the Cortex-X2 cpu and is still open.
ERRATA_X2_2002765 ?=0
@@ -947,6 +951,10 @@
$(eval $(call assert_boolean,ERRATA_A710_2017096))
$(eval $(call add_define,ERRATA_A710_2017096))
+# Process ERRATA_A710_2267065 flag
+$(eval $(call assert_boolean,ERRATA_A710_2267065))
+$(eval $(call add_define,ERRATA_A710_2267065))
+
# Process ERRATA_X2_2002765 flag
$(eval $(call assert_boolean,ERRATA_X2_2002765))
$(eval $(call add_define,ERRATA_X2_2002765))