Meeting Minutes 2021-08-04

Voting Members :

  • antmicro
  • google
  • ibm
  • oregonstateuniversity
  • vantosh
Total voting members : 5 - Quorum voting members : 3

Attendees :

  • toshaanbharvani - vantosh
  • timansell - google
  • michaelgielda - antmicro
  • antonblanchard - ibm
  • paulmackerras - ibm
  • toddrosedahl - ibm
  • lancealbertson - oregonstateuniversity
Voting member present : 5
This meeting has a voting member quorum.

LibreBMC SIG Meeting

Meeting date: 04 August 2021
Access link:
Meeting ID: 941 7298 309600

Call to Order

Anti-trust Reminder

This is a reminder that all OpenPOWER Foundation activities are subject to strict compliance with the OpenPOWER Foundation’s Antitrust Guidelines. Each individual participant and attendee at this meeting is responsible for knowing the contents of the Antitrust Guidelines, and for complying with the Antitrust Guidelines. Copies of the Antitrust Guidelines are available at: Antitrust Guidelines in Google Drive or Antitrust Guidelines OPF in OpenPOWER Foundation member area.


WG Chair Update

  • Nominations
  • Votes
    • Motion to vote: Karol and Todd to be co-chairs of the work group.
      • Google ( Yes
      • IBM (Todd): Yes
      • VanTosh (Toshaan) : Yes
      • Antmicro (Michael Gielda) : Yes
      • OSU (Lance Albertson) : Yes

Getting hardware to people

  • There are 3 components;

    • AC922
    • DC-SCM board
    • Interposer
      • 6 pieces
  • Want to have a “LibreBMC” setup for OCP Summit

    • Send to Rochester who will then bring them to the OCP summit.
  • Need to have complete set ups at;

    1. Antmicro*
    2. Australia* (Canberra - OzLab)
    3. Rochester*
    4. OSU for cloud access
    5. others if available (VanTosh, …)
  • Todd to get AC922 shipped to Rochester, add interposer and then ship to Antmicro (Poland, EU).

    • AI(mgielda): Send Todd shipping information.
  • Todd should ship 2 interposers to Canberra (AU).

    • AI(anton): Send Todd shipping information.
  • Antmicro will aim to ship the DC-SCM boards once they have been verified.

    • 1 x (working) Rochester
    • (potentially) 1 x “display model” to Rochester
    • 1 x (working) Canberra
  • Recommendation for IBM to provide Antmicro 4 x AC922

  • Google has decided to purchase some AC922 devices.

  • VanTosh will purchase AC922 based upon shipping

  • Looking to get CarlosDP who works for RedHat in Brazil a AC922.

  • IBM and Antmicro to coordinate around bring up.

  • Antmicro DC-SCM board design

Workgroup Collaboration Tools

LiteEth upstreaming

Improved SPI support


  • Have a proposal to build a soft CPU which is comparable VexRISCV

  • Also looking at having a “POWER-formal” -

  • Microwatt doesn’t fit!

    • Xilinx Arty 35T part
    • ECP5 25T part

    • In collaboration with the creators of LiteX and SpinalHDL, we implemented a test design on Digilent’s Arty A7 board. Taking only 70% of a 35 KLUT FPGA - the Artix A35T - VexRiscv runs at 100 MHz and boots Linux in about 4 seconds.

Changing to LiteX style

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