Linux 5.6 Crypto Code Brings The New AMD TEE Driver
This AMD TEE driver that is part of this crypto pull is for providing Trusted Execution / Secure Processor support on newer AMD platforms. The current AMD TEE support is focused on Raven Ridge APUs.
The AMD-TEE driver is focused on current APUs, supports sharing memory between the normal and secure worlds, and acts as a "Rich Execution Environment" bridge for submitting commands to the secure processor. Running on the AMD Secure Processor meanwhile is the "AMD-TEE Trusted OS" that is loaded via firmware. The TEE is designed for areas like content protection / digital rights management, identification / authentication purposes, and other access rights handling.
With Linux 5.6 there is that AMD-TEE driver and the Raven Ridge hardware support. Other crypto work for Linux 5.6 includes AVX poly1305 optimizations, various i.MX8M additions, BCM2711 support within iproc-rng200 (this is the SoC within the Raspberry Pi 4), and other additions.
The lengthy list of Linux 5.6 crypto changes can be found via this mailing list post.
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