AMD Reportedly Allows Disabling PSP Secure Processor With Latest AGESA
Written by Michael Larabel in AMD on 7 December 2017 at 11:50 AM EST. 52 Comments
AMD --
With the latest AGESA update for Ryzen-based systems, AMD is reportedly allowing the Platform Security Processor (PSP) to be disabled. The AMD PSP akin to Intel's Management Engine.

This built-in AMD Secure Processor has been criticized by some as another possible attack vector, closed-source software running on the system and locking it down, etc. PSP makes use of ARM TrustZone.

In light of the recent Intel ME vulnerabilities, AMD appears to be exposing the support in their latest AGESA update to allow the PSP to be disabled by the user through their UEFI/BIOS area.

This was brought up today on Reddit with some users reporting to see a "BIOS PSP Support - Disabled" option when updating their BIOS.

Unfortunately, none of my Ryzen motherboards have seen vendor BIOS updates since September, so not yet able to confirm this feature on any of my motherboards.

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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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