When USB3 is on lane 2 and indirect register access is used, the polling at the end of the mvebu_a3700_comphy_usb3_power_on function is incorrect. The LOOPBACK_REG0 register should not be used at all. Instead we have to write the LANE_STATUS1 register address (with offset USB3PHY_LANE2_REG_BASE_OFFSET) into the indirect address register and then we should poll indirect data register. This fixes problems on Turris Mox, which uses lane 2 for USB3. Signed-off-by: Marek Behún <marek.behun@nic.cz> Change-Id: I968b0cccee5ddbe10a2b5614e52e52d87682aacd |
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common | ||
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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.