lib/cpus: Report AT speculative erratum workaround
Reported the status (applies, missing) of AT speculative workaround
which is applicable for below CPUs.
+---------+--------------+
| Errata | CPU |
+=========+==============+
| 1165522 | Cortex-A76 |
+---------+--------------+
| 1319367 | Cortex-A72 |
+---------+--------------+
| 1319537 | Cortex-A57 |
+---------+--------------+
| 1530923 | Cortex-A55 |
+---------+--------------+
| 1530924 | Cortex-A53 |
+---------+--------------+
Also, changes are done to enable common macro 'ERRATA_SPECULATIVE_AT'
if AT speculative errata workaround is enabled for any of the above
CPUs using 'ERRATA_*' CPU specific build macro.
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Change-Id: I3e6a5316a2564071f3920c3ce9ae9a29adbe435b
diff --git a/lib/cpus/aarch64/cortex_a55.S b/lib/cpus/aarch64/cortex_a55.S
index 8e13824..7838304 100644
--- a/lib/cpus/aarch64/cortex_a55.S
+++ b/lib/cpus/aarch64/cortex_a55.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2017-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2017-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -222,6 +222,20 @@
b cpu_rev_var_ls
endfunc check_errata_1221012
+ /* --------------------------------------------------
+ * Errata workaround for Cortex A55 Errata #1530923.
+ * This applies to all revisions of Cortex A55.
+ * --------------------------------------------------
+ */
+func check_errata_1530923
+#if ERRATA_A55_1530923
+ mov x0, #ERRATA_APPLIES
+#else
+ mov x0, #ERRATA_MISSING
+#endif
+ ret
+endfunc check_errata_1530923
+
func cortex_a55_reset_func
mov x19, x30
@@ -306,6 +320,7 @@
report_errata ERRATA_A55_846532, cortex_a55, 846532
report_errata ERRATA_A55_903758, cortex_a55, 903758
report_errata ERRATA_A55_1221012, cortex_a55, 1221012
+ report_errata ERRATA_A55_1530923, cortex_a55, 1530923
ldp x8, x30, [sp], #16
ret