AMD Announces openSIL Compatibility for Zen 6 Ryzen “Medusa” Processors in Early 2027, and EPYC “Venice” CPUs in 2026

AMD has officially announced its dedication to the openSIL project, which focuses on developing “Open Firmware”for its forthcoming Zen 6-based Ryzen “Medusa”and EPYC “Venice”processors.

AMD Confirms openSIL “Open Firmware”Support for Next-Gen Zen 6 Ryzen and EPYC CPUs

Designed as a replacement for conventional firmware solutions like AGESA, openSIL represents a significant shift in AMD’s approach to firmware management. First unveiled in 2023, this initiative has been set to cater to both client and server platforms. During the OCP Summit 2025, AMD renewed its commitment to openSIL, sharing detailed insights into its plans for upcoming Zen 6 CPUs.

AMD openSIL Firmware for Zen 6 CPUs — Image Source: OCP 2025

Developed using an Agnostic 3 Static Library in C-17 for Silicon, Platform, and Utilities
Enables straightforward and scalable integration with any x86 Host Firmware
Offers a flexible library customization to meet specific customer and x86 host firmware requirements
Features lightweight construction and reduced chirp density to bolster security
Fully open-source from its inception

In 2024, AMD elaborated on its plans to adopt openSIL for both Ryzen and EPYC CPU platforms powered by Zen 6 architecture. At the recent OCP 2025 event, Chief Firmware Architect Raj Kapoor provided updates regarding openSIL’s implementation, particularly emphasizing that the EPYC “Venice”series will be the first to benefit from a Post-launch Release (PoR) interception. Typically, users can expect an open-source firmware release roughly one quarter following the launch of a product.

Moreover, support for openSIL firmware is set to extend from server applications to client systems. Open-source firmware support for the Zen 4-based Ryzen “Phoenix”processors has already been established, with plans for Zen 6-based Ryzen “Medusa”CPUs following suit. The scheduled release for client PoR on Zen 6 CPUs is anticipated in the first half of 2027.

https://www.youtube.com/watch?v=JplSooSb30o

Building Open Firmware for Open Platforms openSIL & The Road to Full Silicon Transparency (https://www.youtube.com/watch?v=JplSooSb30o)

The move to open-source firmware via openSIL brings numerous advantages, including the potential for streamlined future firmware releases and enhanced security protocols. This shift not only boosts transparency and innovation for AMD’s next-generation CPUs but may also inspire other hardware manufacturers to consider adopting open-source firmware solutions.

Currently, AMD is actively pursuing open-source solutions across a variety of product lines, including Sound Open Firmware, secure Encrypted Virtualization firmware, and openBMC (Baseboard Management Controller software).

Source & Images