You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
Go to file
Joanna Farley c0d8ee3861 Merge "fix(zynqmp): handling of type el3 interrrupts" into integration 7 days ago
.husky
bl1 fix(pmu): unconditionally save PMCR_EL0 4 weeks ago
bl2
bl2u
bl31 Merge "fix(pmu): unconditionally save PMCR_EL0" into integration 3 weeks ago
bl32 fix(tsp): flush uart console 1 week ago
common refactor(cpufeat): enable FEAT_RAS for FEAT_STATE_CHECKED 3 weeks ago
docs Merge "feat(rme): save PAuth context when RME is enabled" into integration 1 week ago
drivers Merge changes I1bfa797e,I0ec7a70e into integration 3 weeks ago
fdts
include Merge changes I31ec0001,Ib06cd024,I7c11f15d,Ie0d5d4c8,I285f3b59, ... into integration 1 week ago
lib feat(libc): add %c to printf/snprintf 3 weeks ago
licenses
make_helpers Merge changes from topic "mp/feat_ras" into integration 3 weeks ago
plat Merge "fix(zynqmp): handling of type el3 interrrupts" into integration 7 days ago
services Merge changes I31ec0001,Ib06cd024,I7c11f15d,Ie0d5d4c8,I285f3b59, ... into integration 1 week ago
tools docs(changelog): changelog for v2.9 release 2 weeks ago
.checkpatch.conf
.commitlintrc.js
.cz.json
.editorconfig
.gitignore
.gitreview
.nvmrc
.readthedocs.yaml fix: pin poetry to version used in CI 2 weeks ago
.versionrc.js
Makefile Merge "feat(rme): save PAuth context when RME is enabled" into integration 1 week ago
changelog.yaml docs(changelog): changelog for v2.9 release 2 weeks ago
dco.txt
license.rst
package-lock.json docs(changelog): changelog for v2.9 release 2 weeks ago
package.json docs(changelog): changelog for v2.9 release 2 weeks ago
poetry.lock
pyproject.toml docs(changelog): changelog for v2.9 release 2 weeks ago
readme.rst

readme.rst

Trusted Firmware-A
==================

Trusted Firmware-A (TF-A) is a reference implementation of secure world software
for `Arm A-Profile architectures`_ (Armv8-A and Armv7-A), including an Exception
Level 3 (EL3) `Secure Monitor`_. It provides a suitable starting point for
productization of secure world boot and runtime firmware, in either the AArch32
or AArch64 execution states.

TF-A implements Arm interface standards, including:

-  `Power State Coordination Interface (PSCI)`_
-  `Trusted Board Boot Requirements CLIENT (TBBR-CLIENT)`_
-  `SMC Calling Convention`_
-  `System Control and Management Interface (SCMI)`_
-  `Software Delegated Exception Interface (SDEI)`_

The code is designed to be portable and reusable across hardware platforms and
software models that are based on the Armv8-A and Armv7-A architectures.

In collaboration with interested parties, we will continue to enhance TF-A
with reference implementations of Arm standards to benefit developers working
with Armv7-A and Armv8-A TrustZone technology.

Users are encouraged to do their own security validation, including penetration
testing, on any secure world code derived from TF-A.

More Info and Documentation
---------------------------

To find out more about Trusted Firmware-A, please `view the full documentation`_
that is available through `trustedfirmware.org`_.

--------------

*Copyright (c) 2013-2019, Arm Limited and Contributors. All rights reserved.*

.. _Armv7-A and Armv8-A: https://developer.arm.com/products/architecture/a-profile
.. _Secure Monitor: http://www.arm.com/products/processors/technologies/trustzone/tee-smc.php
.. _Power State Coordination Interface (PSCI): PSCI_
.. _PSCI: http://infocenter.arm.com/help/topic/com.arm.doc.den0022d/Power_State_Coordination_Interface_PDD_v1_1_DEN0022D.pdf
.. _Trusted Board Boot Requirements CLIENT (TBBR-CLIENT): https://developer.arm.com/docs/den0006/latest/trusted-board-boot-requirements-client-tbbr-client-armv8-a
.. _SMC Calling Convention: http://infocenter.arm.com/help/topic/com.arm.doc.den0028b/ARM_DEN0028B_SMC_Calling_Convention.pdf
.. _System Control and Management Interface (SCMI): SCMI_
.. _SCMI: http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/DEN0056A_System_Control_and_Management_Interface.pdf
.. _Software Delegated Exception Interface (SDEI): SDEI_
.. _SDEI: http://infocenter.arm.com/help/topic/com.arm.doc.den0054a/ARM_DEN0054A_Software_Delegated_Exception_Interface.pdf
.. _Arm A-Profile architectures: https://developer.arm.com/architectures/cpu-architecture/a-profile
.. _view the full documentation: https://www.trustedfirmware.org/docs/tf-a
.. _trustedfirmware.org: http://www.trustedfirmware.org