Power Architecture Platform Reference

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The Power Architecture Platform Reference shortly PAPR, is a specification for a hardware platform based on processors of the power - and PowerPC - instruction set architecture , which dates back to an initiative by Power.org. Power.org was founded at the end of 2004 as a merger of several companies. The specification replaces the PowerPC platform of the 1990s.

history

As early as 2005, the internal design of the PowerPC 450 processor core was made available to interested researchers and universities via Power.org, and in 2006 all the design documents for the PowerPC-based Pegasos mainboard were published on the website . The Pegasus was developed according to the Common Hardware Reference Platform specification (CHRP, renamed PowerPC Platform in 1995), the forerunner of the PAPR.

With the aim of advancing the Power and PowerPC processor architecture , companies such as Freescale and IBM worked together under the auspices of Power.org. IBM's Power5 and Power6 served as the starting point for joint further development.

In August 2013, an alliance for the joint production of power-based products was established with the OpenPOWER Foundation between IBM, Google, Nvidia, Mellanox and Tyan, which Samsung also joined a year later.

Specifications

  • PAPR - Power Architecture Platform Reference
  • ePAPR - Embedded Power Architecture Platform Requirements
  • LoPAPR - Linux on Power Architecture Platform Reference

The full specification is only available to OpenPOWER members, but the Embedded Power Architecture Platform Requirements and the Linux on Power Architecture Platform Reference , the latter an abbreviated version of the specification, are freely available.

Individual evidence

  1. ↑ Oliver Lau: Power.org community hoists power flag. In: Heise online . June 8, 2005 . Retrieved July 1, 2019 .; Quote: "While big names like Apple are turning away from the PowerPC, the Power.org community will be holding the Power (PC) flag in the air for the first European Power.org Community Conference in Barcelona tomorrow."
  2. ↑ Torge Löding: New open standards community for chip manufacturers. In: Heise online . December 2, 2004 . Retrieved July 1, 2019.
  3. ↑ Mattias Hermannstorfer: Researchers gain insight into PowerPC specifications. In: Heise online . December 15, 2005 . Retrieved July 1, 2019.
  4. ↑ Mattias Hermannstorfer: Design of the PowerPC mainboard Pegasos published. In: Heise online . January 12, 2006 . Retrieved July 1, 2019 .; Quote: "The complete design documents for the PowerPC-based mainboard Pegasos can now be downloaded from the website of the PowerPC community Power.org."
  5. ↑ Erich Bonnert: ISSCC: IBM and Freescale cooperate in power development. In: Heise online . February 7, 2006 . Retrieved July 1, 2019.
  6. ↑ Christof Windeck: IBM is looking for new customers for power processors. In: Heise online . August 6, 2013 . Retrieved July 1, 2019.
  7. ↑ Christof Windeck: Samsung joins the OpenPOWER Foundation. In: Heise online . February 13, 2014 . Retrieved July 1, 2019.
  8. ↑ Power.org ™ Standard for Embedded Power Architecture ™ Platform Requirements (ePAPR). (PDF; 674 KB) Power.org, April 8, 2011, accessed on February 18, 2020 (English, Version 1.1).
  9. ↑ Linux on Power Architecture Platform Reference. (PDF; 4.9 MB) IBM (OpenPOWER Foundation), March 24, 2016, accessed on July 1, 2019 (English, draft (DRAFT), version 1.1).
  10. ↑ Michael Ellerman: Re: [resend] [PATCH 0/3] powerpc / pseries: use H_BLOCK_REMOVE. ( Mailing list ) In: LKML. August 3, 2018, accessed on July 1, 2019 (English): "The only public document is LoPAPR, which is a stripped down version of the 2012 PAPR."