Cortex-A53: Workarounds for 819472, 824069 and 827319
The workarounds for these errata are so closely related that it is
better to only have one patch to make it easier to understand.
Change-Id: I0287fa69aefa8b72f884833f6ed0e7775ca834e9
Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
diff --git a/lib/cpus/aarch64/cortex_a53.S b/lib/cpus/aarch64/cortex_a53.S
index 332bad7..f20082d 100644
--- a/lib/cpus/aarch64/cortex_a53.S
+++ b/lib/cpus/aarch64/cortex_a53.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -42,6 +42,36 @@
ret
endfunc cortex_a53_disable_smp
+ /* ---------------------------------------------------
+ * Errata Workaround for Cortex A53 Errata #819472.
+ * This applies only to revision <= r0p1 of Cortex A53.
+ * ---------------------------------------------------
+ */
+func check_errata_819472
+ /*
+ * Even though this is only needed for revision <= r0p1, it
+ * is always applied due to limitations of the current
+ * errata framework.
+ */
+ mov x0, #ERRATA_APPLIES
+ ret
+endfunc check_errata_819472
+
+ /* ---------------------------------------------------
+ * Errata Workaround for Cortex A53 Errata #824069.
+ * This applies only to revision <= r0p2 of Cortex A53.
+ * ---------------------------------------------------
+ */
+func check_errata_824069
+ /*
+ * Even though this is only needed for revision <= r0p2, it
+ * is always applied due to limitations of the current
+ * errata framework.
+ */
+ mov x0, #ERRATA_APPLIES
+ ret
+endfunc check_errata_824069
+
/* --------------------------------------------------
* Errata Workaround for Cortex A53 Errata #826319.
* This applies only to revision <= r0p2 of Cortex A53.
@@ -70,6 +100,21 @@
b cpu_rev_var_ls
endfunc check_errata_826319
+ /* ---------------------------------------------------
+ * Errata Workaround for Cortex A53 Errata #827319.
+ * This applies only to revision <= r0p2 of Cortex A53.
+ * ---------------------------------------------------
+ */
+func check_errata_827319
+ /*
+ * Even though this is only needed for revision <= r0p2, it
+ * is always applied due to limitations of the current
+ * errata framework.
+ */
+ mov x0, #ERRATA_APPLIES
+ ret
+endfunc check_errata_827319
+
/* ---------------------------------------------------------------------
* Disable the cache non-temporal hint.
*
@@ -304,7 +349,10 @@
* Report all errata. The revision-variant information is passed to
* checking functions of each errata.
*/
+ report_errata ERRATA_A53_819472, cortex_a53, 819472
+ report_errata ERRATA_A53_824069, cortex_a53, 824069
report_errata ERRATA_A53_826319, cortex_a53, 826319
+ report_errata ERRATA_A53_827319, cortex_a53, 827319
report_errata ERRATA_A53_835769, cortex_a53, 835769
report_errata ERRATA_A53_836870, cortex_a53, disable_non_temporal_hint
report_errata ERRATA_A53_843419, cortex_a53, 843419