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Foundation Chiplet System Architecture

Workstream Call

27th July 2026

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Connect. Collaborate. Accelerate.

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FCSA Development Timeline

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Q1 2026

Q2 2026

Q3 2026

Q4 2026

Q1 2027

Future

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Last Update: July 2026

Release

Milestone

Contribution Period

Workstream proposals and discussion

Implementation and review

V1.1.0 Release Candidate

28/08/2026

V1.1.0�Final Release

12/10/2026

Version Scope Complete

26/06/2026

Contribution Period

Workstream proposals and discussion

Implementation and review

v(+1) Beta Release

v(+1) Final Release

Version Scope Complete

Contribution Period

Contribution

Deadline

27/03/2026

Contribution

Deadline

Contribution

Deadline

OCP Global Summit 2026

v(+1)

v1.1.0

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FCSA v1.1 Alpha 0

The complete v1.1 Alpha 0 is now available for review.

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It contains:

  • The new security chapter. The draft of this was made available for the previous call.
  • The addition of rules for boot sequencing.
  • The addition of rules on implementation requirements.
  • Various minor fixes and improvements.

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FCSA v1.1 Alpha 0

The contribution on FuSa, earlier proposed for this version, will be made in a later version of the FCSA.

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Boot Sequencing

The concept was previously presented to the workstream in the call of 9th March 2026.

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The changes for v1.1 include:

  • The specification of an interface for boot sequencing.
  • Detail of boot sequencing between trusted security agents and system controllers.
  • Rules as appropriate for chiplet types and their interfaces that specify this interface.

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Boot Sequence Control Interface

  • Used by Trusted Security Agent and System Controller components.
  • Ready, Proceed and Error signals between components in chiplets.

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Primary

Secondary

Init

Init

Next stage

Ready

Proceed

Error

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Implementation Requirements

A small new chapter that captures interoperability and scalability.

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  • Adapt memory traffic across differing chiplet interfaces.
  • Size snoop filters for total system demand.

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  • This chapter creates a place to add more requirements of this kind.

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FCSA v1.1 Alpha 0

The Alpha 0 is available here.

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Please review.

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Comment and discussion is welcome on the mailing list and in this call.

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We are aiming to deliver to release candidate at the end of August.

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https://drive.google.com/file/d/1AtQF1KovNFulIGcrIMhTwIY0MfEhXNex/view?usp=drive_link

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