fix(errata): workaround for Cortex-A77 erratum 2356587
Cortex-A77 erratum 2356587 is a cat B erratum that applies to revisions
r0p0 - r1p1 and is still open. The workaround is to set bit[0] of
CPUACTLR2_EL1 to force PLDW/PFRM ST to behave like PLD/PRFM LD and not
cause invalidations to other PE caches.
SDEN can be found here:
https://developer.arm.com/documentation/SDEN1152370/latest
Signed-off-by: Bipin Ravi <bipin.ravi@arm.com>
Change-Id: I243cfd587bca06ffd2a7be5bce28f8d2c5e68230
diff --git a/lib/cpus/cpu-ops.mk b/lib/cpus/cpu-ops.mk
index e14bb24..7d0d93d 100644
--- a/lib/cpus/cpu-ops.mk
+++ b/lib/cpus/cpu-ops.mk
@@ -303,6 +303,10 @@
# to revisions r0p0, r1p0, and r1p1, it is still open.
ERRATA_A77_1791578 ?=0
+# Flag to apply erratum 2356587 workaround during reset. This erratum applies
+# to revisions r0p0, r1p0, and r1p1, it is still open.
+ERRATA_A77_2356587 ?=0
+
# Flag to apply erratum 1688305 workaround during reset. This erratum applies
# to revisions r0p0 - r1p0 of the A78 cpu.
ERRATA_A78_1688305 ?=0
@@ -843,6 +847,10 @@
$(eval $(call assert_boolean,ERRATA_A77_1791578))
$(eval $(call add_define,ERRATA_A77_1791578))
+# Process ERRATA_A77_2356587 flag
+$(eval $(call assert_boolean,ERRATA_A77_2356587))
+$(eval $(call add_define,ERRATA_A77_2356587))
+
# Process ERRATA_A78_1688305 flag
$(eval $(call assert_boolean,ERRATA_A78_1688305))
$(eval $(call add_define,ERRATA_A78_1688305))