AMD Zen 6 Adds RISC-V Trusted Execution Environment
A linux-firmware commit shows AMD's upcoming Zen 6 client processors will run platform security firmware on a RISC-V based TEE.
Updated on Nov. 6, 2026 in Semiconductors
A Git commit to linux-firmware.git adds Platform Management Framework Trusted Application firmware v4 for AMD's 1AH_M80H platform, identified as the upcoming Zen 6 client processors. The firmware runs on a RISC-V based Trusted Execution Environment, a change from the Arm-based secure processor AMD used previously.
Why it matters
The shift from an Arm Cortex-A5 core with TrustZone to a RISC-V based TEE marks a change in the architecture underlying platform security on AMD client chips. The updated firmware also expands shared memory and policy support, which affects how system firmware configures security controls.
The updated PMF TA v4 firmware supports up to 20 custom BIOS inputs and a larger shared memory layout than prior versions. The commit does not disclose the RISC-V core's clock speed or whether the change is final for shipping silicon.
The players
AMD
Advanced Micro Devices is a semiconductor company that designs CPUs, GPUs and related platform security hardware, including the Platform Security Processor used in its client chips.
The details
The change appears in a linux-firmware.git commit that adds PMF TA v4 for the 1AH_M80H platform, which the commit ties to upcoming AMD Ryzen Zen 6 client processors. The firmware also extends the set of policy conditions it supports, which AMD's Platform Security Processor previously handled on Arm hardware.
Timeline
November 6, 2026: Linux-firmware commit adding PMF TA v4 for the 1AH_M80H platform is published.
The Tech Race
AMD's earlier Platform Security Processor relied on an Arm Cortex-A5 core with TrustZone, so the move to a RISC-V based TEE in Zen 6 client chips represents a change of core architecture for this security function. The shift places AMD's platform security alongside other chip designers exploring RISC-V for embedded control logic.
For users of AMD Zen 6 client systems, the change affects how platform security firmware is loaded and configured at the BIOS level rather than any visible feature. Buyers will see the effect only through the firmware and security policies their systems ship with.
The takeaway
Hardware security is increasingly built on multiple core architectures, so firmware updates like this one show how chip vendors are reworking the controllers beneath the operating system. Readers tracking AMD platforms should watch linux-firmware releases for the firmware details behind each new generation.
Further reading
For more on chip design trends, see the Semiconductors section.
Source note: This article includes information reported by Phoronix.
