Cortex-A57: Implement workaround for erratum 859972
Erratum 855972 applies to revision r1p3 or earlier Cortex-A57 CPUs. The
recommended workaround is to disable instruction prefetch.
Change-Id: I56eeac0b753eb1432bd940083372ad6f7e93b16a
Signed-off-by: Eleanor Bonnici <Eleanor.bonnici@arm.com>
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/docs/cpu-specific-build-macros.rst b/docs/cpu-specific-build-macros.rst
index 5738927..6b154f0 100644
--- a/docs/cpu-specific-build-macros.rst
+++ b/docs/cpu-specific-build-macros.rst
@@ -30,7 +30,8 @@
is for example ``A57`` for the ``Cortex_A57`` CPU.
Refer to the section *CPU errata status reporting* in
-`Firmware Design guide`_ for information on to write errata workaround functions.
+`Firmware Design guide`_ for information on how to write errata workaround
+functions.
All workarounds are disabled by default. The platform is responsible for
enabling these workarounds according to its requirement by defining the
@@ -98,6 +99,9 @@
- ``ERRATA_A57_833471``: This applies errata 833471 workaround to Cortex-A57
CPU. This needs to be enabled only for revision <= r1p2 of the CPU.
+- ``ERRATA_A57_859972``: This applies errata 859972 workaround to Cortex-A57
+ CPU. This needs to be enabled only for revision <= r1p3 of the CPU.
+
CPU Specific optimizations
--------------------------
@@ -131,7 +135,7 @@
*Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.*
-.. _Cortex-A53 MPCore Software Developers Errata Notice: http://infocenter.arm.com/help/topic/com.arm.doc.epm048406/index.html
+.. _Cortex-A53 MPCore Software Developers Errata Notice: http://infocenter.arm.com/help/topic/com.arm.doc.epm048406/Cortex_A53_MPCore_Software_Developers_Errata_Notice.pdf
.. _Cortex-A57 MPCore Software Developers Errata Notice: http://infocenter.arm.com/help/topic/com.arm.doc.epm049219/cortex_a57_mpcore_software_developers_errata_notice.pdf
.. _Firmware Design guide: firmware-design.rst
.. _Cortex-A57 Software Optimization Guide: http://infocenter.arm.com/help/topic/com.arm.doc.uan0015b/Cortex_A57_Software_Optimization_Guide_external.pdf