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diff --git a/readme.rst b/readme.rst new file mode 100644 index 0000000..148d477 --- /dev/null +++ b/readme.rst @@ -0,0 +1,51 @@ +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 + |