[transpute]

Commercially-supportable open firmware enables vertical integration for cloud computing and edge hardware appliances. The 2023 OpenSIL announcement included vendors who contribute to open-source firmware and reference hardware in OpenCompute and other projects.

  AMD believes one of the ways to attain an improved security posture is to open Silicon Initialization Firmware architecture, development, and validation to the open-source community. AMD is committed to open-source software and is now expanding into the various firmware domains with the re-architecture of its x86 AGESA FW stack - designed with UEFI as the host firmware that prevented scaling, to other host firmware solutions such as coreboot, oreboot, FortiBIOS, Project µ and others. 

  AMD, in close collaboration with a few other organizations (9elements, AMI, AWS, 3mdeb, Datacom, Google, Meta, Oxide) from the open-source landscape, developed the first instance of AMD openSIL..

https://www.amd.com/en/blogs/2023/empowering-the-industry-wi...

Even if a binary blob requires silicon vendor signature, open-source code can be reviewed and built by customers, to reproduce the signed binary.

[pietrushnic]

This is precisely it. Also, maybe some regulatory requirements of cloud providers and organizations like OCP. Commoditizing their complement is probably another obvious goal.

We also have to note that AMD seems to be heading for being a market leader in the server market (some signals are active in OCP Caliptra and OSF). We can see their presence at the upcoming OCP Summit, where they (together with Intel) will push forward the agenda of a generic framework for bootstrapping firmware, which is called openSFI: https://youtu.be/1CE6olXT604