fix(cpus): workaround for Cortex-A710 2216384
Cortex-A710 erratum 2216384 is a Cat B erratum that applies to revisions
r0p0, r1p0, and r2p0, and is fixed in r2p1. The workaround is to set
CPUACTLR5_EL1[17] to 1 and applying an instruction patching sequence.
Setting this bit, along with these instructions will prevent the
deadlock, and thereby avoids the reset of the processor.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1775101/latest
Change-Id: I2821591c23f854c12111288ad1fd1aef45db6add
Signed-off-by: Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com>
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 9f1064a..840bb4c 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -532,6 +532,10 @@
# to revision r2p0 of the Cortex-A710 CPU and is fixed in revision r2p1.
ERRATA_A710_2147715 ?=0
+# Flag to apply erratum 2216384 workaround during reset. This erratum applies
+# to revision r0p0, r1p0 and r2p0 of the Cortex-A710 cpu and is fixed in r2p1.
+ERRATA_A710_2216384 ?=0
+
# Flag to apply erratum 2282622 workaround during reset. This erratum applies
# to revision r0p0, r1p0 and r2p0 of the Cortex-A710 cpu and is fixed in r2p1.
ERRATA_A710_2282622 ?=0
@@ -1119,6 +1123,10 @@
$(eval $(call assert_boolean,ERRATA_A710_2147715))
$(eval $(call add_define,ERRATA_A710_2147715))
+# Process ERRATA_A710_2216384 flag
+$(eval $(call assert_boolean,ERRATA_A710_2216384))
+$(eval $(call add_define,ERRATA_A710_2216384))
+
# Process ERRATA_A710_2282622 flag
$(eval $(call assert_boolean,ERRATA_A710_2282622))
$(eval $(call add_define,ERRATA_A710_2282622))