About

This project aims to implement and upstream the MM service group based on MPXY SBI extension and RPMI protocol in EDK2.  This project helps the PoC project EDK2_00_02 - StandaloneMmPkg (PoC) and let it use the spec defined SBI interface.

Project Scope and Timelines

The MM service group implementation includes.

• Leverage the SBI MPXY extension and RPMI protocol, which carries the RPMI message in EDK2
• Put MM inter-doman messaging payload in shared memory in EDK2
• Add an MM Service in RPMI with APIs:
  • MM_VERSION
  • MM_COMMUNICATE
  • MM_COMPLETE

Components and Repos.

Based on RPMI PoC

Repos:
 OpenSBI  : https://github.com/ventanamicro/opensbi/tree/dev-upstream
 edk2     : https://github.com/tianocore/edk2-staging/tree/RiscV64StandaloneMm

Stakeholders and Partners

• RISE
  • Intel: Yong Li <yong.li@intel.com>
• External
  • IPADS: Erhu Feng, Qingyu Shang
  • StarFive: Cheehong Ang <cheehong.ang@starfivetech.com>,John Chew <yuinyee.chew@starfivetech.com>

Dependencies

Here are the links to the draft specifications for RPMI and MPXY which were shared in the past on the riscv org mailing list for review.
RPMI: https://github.com/riscv-non-isa/riscv-rpmi
MPXY: https://lists.riscv.org/g/tech-prs/message/948

Measure of Success

Code upstream to EDK2

RISE Requirements

None,

Status

Updates

11 Jul 2024 

Rebased code with the latest RPMI PoC

https://github.com/yli147/edk2/tree/dev-standalonemm-mpxy-v3

06 Mar 2024 

Pending on RPMI spec ratification, will do the code rebase once spec has been ratified