errata: workaround for Cortex-A78 erratum 2132060
Cortex-A78 erratum 2132060 is a Cat B erratum that applies to
revisions r0p0, r1p0, r1p1, and r1p2 of CPU. It is still open.
The workaround is to write the value 2'b11 to the PF_MODE bits
in the CPUECTLR_EL1 register which will place the data prefetcher
in the most conservative mode instead of disabling it.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1401784/latest
Signed-off-by: nayanpatel-arm <nayankumar.patel@arm.com>
Change-Id: If7dec72578633d37d110d103099e406c3a970ff7
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index 9b2d546..94ba430 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -327,6 +327,10 @@
# to revision r0p0 of the A78 cpu and was fixed in the revision r1p0.
ERRATA_A78_1952683 ?=0
+# Flag to apply erratum 2132060 workaround during reset. This erratum applies
+# to revisions r0p0, r1p0, r1p1, and r1p2 of the A78 cpu. It is still open.
+ERRATA_A78_2132060 ?=0
+
# Flag to apply T32 CLREX workaround during reset. This erratum applies
# only to r0p0 and r1p0 of the Neoverse N1 cpu.
ERRATA_N1_1043202 ?=0
@@ -718,6 +722,10 @@
$(eval $(call assert_boolean,ERRATA_A78_1952683))
$(eval $(call add_define,ERRATA_A78_1952683))
+# Process ERRATA_A78_2132060 flag
+$(eval $(call assert_boolean,ERRATA_A78_2132060))
+$(eval $(call add_define,ERRATA_A78_2132060))
+
# Process ERRATA_N1_1043202 flag
$(eval $(call assert_boolean,ERRATA_N1_1043202))
$(eval $(call add_define,ERRATA_N1_1043202))