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Merge pull request #475 from danh-arm/dh/v1.2-final 

Final v1.2 release changes
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danh-arm 2015-12-22 11:42:53 +00:00
parent 74d766742b 6791f52e82
commit d0c104e1e1
3 changed files with 227 additions and 59 deletions
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2
Makefile
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@ -32,7 +32,7 @@
# Trusted Firmware Version
#
VERSION_MAJOR := 1
VERSION_MINOR := 1
VERSION_MINOR := 2
# Default goal is build all images
.DEFAULT_GOAL := all

162
docs/change-log.md
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@ -1,3 +1,158 @@
ARM Trusted Firmware - version 1.2
==================================
New features
------------
* The Trusted Board Boot implementation on ARM platforms now conforms to the
mandatory requirements of the TBBR specification.
In particular, the boot process is now guarded by a Trusted Watchdog, which
will reset the system in case of an authentication or loading error. On ARM
platforms, a secure instance of ARM SP805 is used as the Trusted Watchdog.
Also, a firmware update process has been implemented. It enables
authenticated firmware to update firmware images from external interfaces to
SoC Non-Volatile memories. This feature functions even when the current
firmware in the system is corrupt or missing; it therefore may be used as
a recovery mode.
* Improvements have been made to the Certificate Generation Tool
(`cert_create`) as follows.
* Added support for the Firmware Update process by extending the Chain
of Trust definition in the tool to include the Firmware Update
certificate and the required extensions.
* Introduced a new API that allows one to specify command line options in
the Chain of Trust description. This makes the declaration of the tool's
arguments more flexible and easier to extend.
* The tool has been reworked to follow a data driven approach, which
makes it easier to maintain and extend.
* Extended the FIP tool (`fip_create`) to support the new set of images
involved in the Firmware Update process.
* Various memory footprint improvements. In particular:
* The bakery lock structure for coherent memory has been optimised.
* The mbed TLS SHA1 functions are not needed, as SHA256 is used to
generate the certificate signature. Therefore, they have been compiled
out, reducing the memory footprint of BL1 and BL2 by approximately
6 KB.
* On ARM development platforms, each BL stage now individually defines
the number of regions that it needs to map in the MMU.
* Added the following new design documents:
* [Authentication framework]
* [Firmware Update]
* [TF Reset Design]
* [Power Domain Topology Design]
* Applied the new image terminology to the code base and documentation, as
described on the [TF wiki on GitHub][TF Image Terminology].
* The build system has been reworked to improve readability and facilitate
adding future extensions.
* On ARM standard platforms, BL31 uses the boot console during cold boot
but switches to the runtime console for any later logs at runtime. The TSP
uses the runtime console for all output.
* Implemented a basic NOR flash driver for ARM platforms. It programs the
device using CFI (Common Flash Interface) standard commands.
* Implemented support for booting EL3 payloads on ARM platforms, which
reduces the complexity of developing EL3 baremetal code by doing essential
baremetal initialization.
* Provided separate drivers for GICv3 and GICv2. These expect the entire
software stack to use either GICv2 or GICv3; hybrid GIC software systems
are no longer supported and the legacy ARM GIC driver has been deprecated.
* Added support for Juno r1 and r2. A single set of Juno TF binaries can run
on Juno r0, r1 and r2 boards. Note that this TF version depends on a Linaro
release that does *not* contain Juno r2 support.
* Added support for MediaTek mt8173 platform.
* Implemented a generic driver for ARM CCN IP.
* Major rework of the PSCI implementation.
* Added framework to handle composite power states.
* Decoupled the notions of affinity instances (which describes the
hierarchical arrangement of cores) and of power domain topology, instead
of assuming a one-to-one mapping.
* Better alignment with version 1.0 of the PSCI specification.
* Added support for the SYSTEM_SUSPEND PSCI API on ARM platforms. When invoked
on the last running core on a supported platform, this puts the system
into a low power mode with memory retention.
* Unified the reset handling code as much as possible across BL stages.
Also introduced some build options to enable optimization of the reset path
on platforms that support it.
* Added a simple delay timer API, as well as an SP804 timer driver, which is
enabled on FVP.
* Added support for NVidia Tegra T210 and T132 SoCs.
* Reorganised ARM platforms ports to greatly improve code shareability and
facilitate the reuse of some of this code by other platforms.
* Added support for ARM Cortex-A72 processor in the CPU specific framework.
* Provided better error handling. Platform ports can now define their own
error handling, for example to perform platform specific bookkeeping or
post-error actions.
* Implemented a unified driver for ARM Cache Coherent Interconnects used for
both CCI-400 & CCI-500 IPs. ARM platforms ports have been migrated to this
common driver. The standalone CCI-400 driver has been deprecated.
Issues resolved since last release
----------------------------------
* The Trusted Board Boot implementation has been redesigned to provide greater
modularity and scalability. See the [Authentication Framework] document.
All missing mandatory features are now implemented.
* The FVP and Juno ports may now use the hash of the ROTPK stored in the
Trusted Key Storage registers to verify the ROTPK. Alternatively, a
development public key hash embedded in the BL1 and BL2 binaries might be
used instead. The location of the ROTPK is chosen at build-time using the
`ARM_ROTPK_LOCATION` build option.
* GICv3 is now fully supported and stable.
Known issues
------------
* The version of the AEMv8 Base FVP used in this release resets the model
instead of terminating its execution in response to a shutdown request using
the PSCI `SYSTEM_OFF` API. This issue will be fixed in a future version of
the model.
* While this version has low on-chip RAM requirements, there are further
RAM usage enhancements that could be made.
* The upstream documentation could be improved for structural consistency,
clarity and completeness. In particular, the design documentation is
incomplete for PSCI, the TSP(D) and the Juno platform.
* Building TF with compiler optimisations disabled (`-O0`) fails.
ARM Trusted Firmware - version 1.1
==================================
@ -707,4 +862,9 @@ releases of the ARM Trusted Firmware.
_Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved._
[OP-TEE Dispatcher]: ./optee-dispatcher.md
[OP-TEE Dispatcher]: optee-dispatcher.md
[Power Domain Topology Design]: psci-pd-tree.md
[TF Image Terminology]: https://github.com/ARM-software/arm-trusted-firmware/wiki/Trusted-Firmware-Image-Terminology
[Authentication Framework]: auth-framework.md
[Firmware Update]: firmware-update.md
[TF Reset Design]: reset-design.md

122
readme.md
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@ -1,17 +1,13 @@
ARM Trusted Firmware - version 1.1
ARM Trusted Firmware - version 1.2
==================================
ARM Trusted Firmware provides a reference implementation of secure world
software for [ARMv8-A], including Exception Level 3 (EL3) software. This release
provides complete support for version 0.2 of the [PSCI] specification, initial
support for the new version 1.0 of that specification, and prototype support for
the Trusted Board Boot Requirements specification.
The intent is to provide a reference implementation of various ARM interface
standards, such as the Power State Coordination Interface ([PSCI]), Trusted
Board Boot Requirements (TBBR) and [Secure Monitor] [TEE-SMC] code. As far as
possible the code is designed for reuse or porting to other ARMv8-A model and
hardware platforms.
software for [ARMv8-A], including a [Secure Monitor] [TEE-SMC] executing at
Exception Level 3 (EL3). It implements various ARM interface standards, such as
the Power State Coordination Interface ([PSCI]), Trusted Board Boot Requirements
(TBBR, ARM DEN0006C-1) and [SMC Calling Convention][SMCCC]. As far as possible
the code is designed for reuse or porting to other ARMv8-A model and hardware
platforms.
ARM will continue development in collaboration with interested parties to
provide a full reference implementation of PSCI, TBBR and Secure Monitor code
@ -29,51 +25,58 @@ source files.
This Release
------------
This release is a limited functionality implementation of the Trusted Firmware.
It provides a suitable starting point for productization. Future versions will
contain new features, optimizations and quality improvements.
This release provides a suitable starting point for productization of secure
world boot and runtime firmware. Future versions will contain new features,
optimizations and quality improvements.
Users are encouraged to do their own security validation, including penetration
testing, on any secure world code derived from ARM Trusted Firmware.
### Functionality
* Prototype implementation of a subset of the Trusted Board Boot Requirements
Platform Design Document (PDD). This includes packaging the various firmware
images into a Firmware Image Package (FIP) to be loaded from non-volatile
storage, and a prototype of authenticated boot using key certificates stored
in the FIP.
* Initialization of the secure world (for example, exception vectors, control
registers, interrupt controller and interrupts for the platform), before
transitioning into the normal world at the Exception Level and Register
Width specified by the platform.
* Initializes the secure world (for example, exception vectors, control
registers, GIC and interrupts for the platform), before transitioning into
the normal world.
* Library support for CPU specific reset and power down sequences. This
includes support for errata workarounds.
* Supports both GICv2 and GICv3 initialization for use by normal world
software.
* Drivers for both the version 2.0 and version 3.0 ARM Generic Interrupt
Controller specifications (GICv2 and GICv3). The latter also enables GICv3
hardware systems that do not contain legacy GICv2 support.
* Starts the normal world at the Exception Level and Register Width specified
by the platform port. Typically this is AArch64 EL2 if available.
* Drivers to enable standard initialization of ARM System IP, for example
Cache Coherent Interconnect (CCI), Cache Coherent Network (CCN), Network
Interconnect (NIC) and TrustZone Controller (TZC).
* Handles SMCs (Secure Monitor Calls) conforming to the [SMC Calling
Convention PDD] [SMCCC] using an EL3 runtime services framework.
* SMC (Secure Monitor Call) handling, conforming to the [SMC Calling
Convention][SMCCC] using an EL3 runtime services framework.
* Handles SMCs relating to the [Power State Coordination Interface PDD] [PSCI]
for the Secondary CPU Boot, CPU Hotplug, CPU Idle and System Shutdown/Reset
use-cases.
* SMC handling relating to [PSCI] for the Secondary CPU Boot, CPU Hotplug,
CPU Idle and System Shutdown/Reset/Suspend use-cases.
* Secure Monitor library code such as world switching, EL1 context management
and interrupt routing. This must be integrated with a Secure-EL1 Payload
Dispatcher (SPD) component to customize the interaction with a Secure-EL1
Payload (SP), for example a Secure OS.
* A Test Secure-EL1 Payload and Dispatcher to demonstrate Secure Monitor
functionality such as world switching, EL1 context management and interrupt
routing. This also demonstrates Secure-EL1 interaction with PSCI. Some of
this functionality is provided in library form for re-use by other
Secure-EL1 Payload Dispatchers.
functionality and Secure-EL1 interaction with PSCI.
* Support for alternative Trusted Boot Firmware. Some platforms have their own
Trusted Boot implementation and only require the Secure Monitor
functionality provided by ARM Trusted Firmware.
* SPDs for the [OP-TEE Secure OS] and [NVidia Trusted Little Kernel]
[NVidia TLK].
* Isolation of memory accessible by the secure world from the normal world
through programming of a TrustZone controller.
* A Trusted Board Boot implementation, conforming to all mandatory TBBR
requirements. This includes image authentication using certificates, a
Firmware Update (or recovery mode) boot flow, and packaging of the various
firmware images into a Firmware Image Package (FIP) to be loaded from
non-volatile storage.
* Support for CPU specific reset sequences, power down sequences and register
dumping during crash reporting. The CPU specific reset sequences include
support for errata workarounds.
* Support for alternative boot flows. Some platforms have their own boot
firmware and only require the ARM Trusted Firmware Secure Monitor
functionality. Other platforms require minimal initialization before
booting into an arbitrary EL3 payload.
For a full description of functionality and implementation details, please
see the [Firmware Design] and supporting documentation. The [Change Log]
@ -81,33 +84,36 @@ provides details of changes made since the last release.
### Platforms
This release of the Trusted Firmware has been tested on Revision B of the
[Juno ARM Development Platform] [Juno] with Version r0p0-00rel7 of the
[ARM SCP Firmware] [SCP download].
This release of the Trusted Firmware has been tested on variants r0 and r1 of
the [Juno ARM Development Platform] [Juno] with [Linaro Release 15.10]
[Linaro Release Notes].
The Trusted Firmware has also been tested on the 64-bit Linux versions of the
following ARM [FVP]s:
* `Foundation_Platform` (Version 9.1, Build 9.1.33)
* `FVP_Base_AEMv8A-AEMv8A` (Version 6.2, Build 0.8.6202)
* `FVP_Base_Cortex-A57x4-A53x4` (Version 6.2, Build 0.8.6202)
* `FVP_Base_Cortex-A57x1-A53x1` (Version 6.2, Build 0.8.6202)
* `FVP_Base_Cortex-A57x2-A53x4` (Version 6.2, Build 0.8.6202)
* `Foundation_Platform` (Version 9.4, Build 9.4.59)
* `FVP_Base_AEMv8A-AEMv8A` (Version 7.0, Build 0.8.7004)
* `FVP_Base_Cortex-A57x4-A53x4` (Version 7.0, Build 0.8.7004)
* `FVP_Base_Cortex-A57x1-A53x1` (Version 7.0, Build 0.8.7004)
* `FVP_Base_Cortex-A57x2-A53x4` (Version 7.0, Build 0.8.7004)
The Foundation FVP can be downloaded free of charge. The Base FVPs can be
licensed from ARM: see [www.arm.com/fvp] [FVP].
### Still to Come
This release also contains the following platform support:
* Complete and more flexible Trusted Board Boot implementation.
* NVidia T210 and T132 SoCs
* MediaTek MT8173 SoC
### Still to Come
* Complete implementation of the [PSCI] v1.0 specification.
* Support for alternative types of Secure-EL1 Payloads.
* Support for new CPUs and System IP.
* Extending the GICv3 support to the secure world.
* More platform support.
* Support for new System IP devices.
* Optimization and quality improvements.
For a full list of detailed issues in the current code, please see the [Change
Log] and the [GitHub issue tracker].
@ -155,8 +161,10 @@ _Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved._
[ARMv8-A]: http://www.arm.com/products/processors/armv8-architecture.php "ARMv8-A Architecture"
[FVP]: http://www.arm.com/fvp "ARM's Fixed Virtual Platforms"
[Juno]: http://www.arm.com/products/tools/development-boards/versatile-express/juno-arm-development-platform.php "Juno ARM Development Platform"
[SCP download]: https://silver.arm.com/download/download.tm?pv=1764630
[PSCI]: http://infocenter.arm.com/help/topic/com.arm.doc.den0022c/DEN0022C_Power_State_Coordination_Interface.pdf "Power State Coordination Interface PDD (ARM DEN 0022C)"
[SMCCC]: http://infocenter.arm.com/help/topic/com.arm.doc.den0028a/index.html "SMC Calling Convention PDD (ARM DEN 0028A)"
[TEE-SMC]: http://www.arm.com/products/processors/technologies/trustzone/tee-smc.php "Secure Monitor and TEEs"
[GitHub issue tracker]: https://github.com/ARM-software/tf-issues/issues
[OP-TEE Secure OS]: https://github.com/OP-TEE/optee_os
[NVidia TLK]: http://nv-tegra.nvidia.com/gitweb/?p=3rdparty/ote_partner/tlk.git;a=summary
[Linaro Release Notes]: https://community.arm.com/docs/DOC-10952#jive_content_id_Linaro_Release_1510