Workaround for Neoverse N1 erratum 1130799
Neoverse N1 erratum 1130799 is a Cat B erratum [1],
present in older revisions of the Neoverse N1 processor core.
The workaround is to set a bit in the implementation defined
CPUACTLR2_EL1 system register.
[1] http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.pjdoc-466751330-10325/index.html
Change-Id: I252bc45f9733443ba0503fefe62f50fdea61da6d
Signed-off-by: Lauren Wehrmeister <lauren.wehrmeister@arm.com>
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 0d00d0a..676667b 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -242,6 +242,10 @@
# only to revision r0p0 and r1p0 of the Neoverse N1 cpu.
ERRATA_N1_1073348 ?=0
+# Flag to apply erratum 1130799 workaround during reset. This erratum applies
+# only to revision <= r2p0 of the Neoverse N1 cpu.
+ERRATA_N1_1130799 ?=0
+
# Flag to apply erratum 1315703 workaround during reset. This erratum applies
# to revisions before r3p1 of the Neoverse N1 cpu.
ERRATA_N1_1315703 ?=1
@@ -439,6 +443,10 @@
$(eval $(call assert_boolean,ERRATA_N1_1073348))
$(eval $(call add_define,ERRATA_N1_1073348))
+# Process ERRATA_N1_1130799 flag
+$(eval $(call assert_boolean,ERRATA_N1_1130799))
+$(eval $(call add_define,ERRATA_N1_1130799))
+
# Process ERRATA_N1_1315703 flag
$(eval $(call assert_boolean,ERRATA_N1_1315703))
$(eval $(call add_define,ERRATA_N1_1315703))