f3ccf036ec
This patch fixes the bug when AMUv1 group1 counters was always assumed being implemented without checking for its presence which was causing exception otherwise. The AMU extension code was also modified as listed below: - Added detection of AMUv1 for ARMv8.6 - 'PLAT_AMU_GROUP1_NR_COUNTERS' build option is removed and number of group1 counters 'AMU_GROUP1_NR_COUNTERS' is now calculated based on 'AMU_GROUP1_COUNTERS_MASK' value - Added bit fields definitions and access functions for AMCFGR_EL0/AMCFGR and AMCGCR_EL0/AMCGCR registers - Unification of amu.c Aarch64 and Aarch32 source files - Bug fixes and TF-A coding style compliant changes. Change-Id: I14e407be62c3026ebc674ec7045e240ccb71e1fb Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com> |
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| drivers | ||
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| plat | ||
| services | ||
| tools | ||
| .checkpatch.conf | ||
| .editorconfig | ||
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| license.rst | ||
| 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.