After originally hoping to publish the open-source code last year, today AMD published the initial openSIL code for enabling Phoenix SoCs to make use of this in-development CPU silicon initialization alternative to AGESA.

AMD's [1]openSIL has been one of their exciting open-source ambitions in recent years to ultimately replace AGESA. [2]AMD openSIL hope to reach a production phase in 2026 with Zen 6 platforms.

Last year AMD communicated [3]plans for open-sourcing Phoenix SoC code in 2024 to go alongside their Genoa PoC code and since-published Turin PoC too.

They were [4]running behind in their Phoenix code publishing due to internal processes/review but today that code is now available.

The [5]"phoenix_poc" branch on openSIL GitHub has all the initial code for open-source CPU silicon initialization with Phoenix SoCs. This is now their first client platform with proof-of-concept code to complement the EPYC Genoa and Turin platforms.

This Phoenix support thoughh has only been tested with their Mayan and Birman reference boards. The code is available under an MIT license.



[1] https://www.phoronix.com/search/openSIL

[2] https://www.phoronix.com/news/AMD-openSIL-2026

[3] https://www.phoronix.com/news/AMD-openSIL-September-2024

[4] https://www.phoronix.com/news/AMD-openSIL-Phoenix-Turin-2025

[5] https://github.com/openSIL/openSIL/tree/phoenix_poc