diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/cpu-specific-build-macros.rst | 10 | ||||
| -rw-r--r-- | docs/porting-guide.rst | 16 |
2 files changed, 26 insertions, 0 deletions
diff --git a/docs/cpu-specific-build-macros.rst b/docs/cpu-specific-build-macros.rst index f74b4593..014817d3 100644 --- a/docs/cpu-specific-build-macros.rst +++ b/docs/cpu-specific-build-macros.rst @@ -11,6 +11,15 @@ This document describes the various build options present in the CPU specific operations framework to enable errata workarounds and to enable optimizations for a specific CPU on a platform. +Security Vulnerability Workarounds +---------------------------------- + +ARM Trusted Firmware exports a series of build flags which control which +security vulnerability workarounds should be applied at runtime. + +- ``WORKAROUND_CVE_2017_5715``: Enables the security workaround for + `CVE-2017-5715`_. Defaults to 1. + CPU Errata Workarounds ---------------------- @@ -142,6 +151,7 @@ architecture that can be enabled by the platform as desired. *Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.* +.. _CVE-2017-5715: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2017-5715 .. _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 .. _Cortex-A72 MPCore Software Developers Errata Notice: http://infocenter.arm.com/help/topic/com.arm.doc.epm012079/index.html diff --git a/docs/porting-guide.rst b/docs/porting-guide.rst index 402cc5d3..2e2cc4f7 100644 --- a/docs/porting-guide.rst +++ b/docs/porting-guide.rst @@ -549,6 +549,22 @@ behaviour of the ``assert()`` function (for example, to save memory). doesn't print anything to the console. If ``PLAT_LOG_LEVEL_ASSERT`` isn't defined, it defaults to ``LOG_LEVEL``. +If the platform port uses the Activity Monitor Unit, the following constants +may be defined: + +- **PLAT\_AMU\_GROUP1\_COUNTERS\_MASK** + This mask reflects the set of group counters that should be enabled. The + maximum number of group 1 counters supported by AMUv1 is 16 so the mask + can be at most 0xffff. If the platform does not define this mask, no group 1 + counters are enabled. If the platform defines this mask, the following + constant needs to also be defined. + +- **PLAT\_AMU\_GROUP1\_NR\_COUNTERS** + This value is used to allocate an array to save and restore the counters + specified by ``PLAT_AMU_GROUP1_COUNTERS_MASK`` on CPU suspend. + This value should be equal to the highest bit position set in the + mask, plus 1. The maximum number of group 1 counters in AMUv1 is 16. + File : plat\_macros.S [mandatory] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |