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CPU Families

Documentation/arch/powerpc/cpu_families.rst

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============ CPU Families

This document tries to summarise some of the different cpu families that exist and are supported by arch/powerpc.

Book3S (aka sPAPR)

  • Hash MMU (except 603 and e300)

  • Radix MMU (POWER9 and later)

  • Software loaded TLB (603 and e300)

  • Selectable Software loaded TLB in addition to hash MMU (755, 7450, e600)

  • Mix of 32 & 64 bit::

    +--------------+ +----------------+ | Old POWER | --------------> | RS64 (threads) | +--------------+ +----------------+ | | v +--------------+ +----------------+ +------+ | 601 | --------------> | 603 | ---> | e300 | +--------------+ +----------------+ +------+ | | | | v v +--------------+ +-----+ +----------------+ +-------+ | 604 | | 755 | <--- | 750 (G3) | ---> | 750CX | +--------------+ +-----+ +----------------+ +-------+ | | | | | | v v v +--------------+ +----------------+ +-------+ | 620 (64 bit) | | 7400 | | 750CL | +--------------+ +----------------+ +-------+ | | | | | | v v v +--------------+ +----------------+ +-------+ | POWER3/630 | | 7410 | | 750FX | +--------------+ +----------------+ +-------+ | | | | v v +--------------+ +----------------+ | POWER3+ | | 7450 | +--------------+ +----------------+ | | | | v v +--------------+ +----------------+ | POWER4 | | 7455 | +--------------+ +----------------+ | | | | v v +--------------+ +-------+ +----------------+ | POWER4+ | --> | 970 | | 7447 | +--------------+ +-------+ +----------------+ | | | | | | v v v +--------------+ +-------+ +----------------+ | POWER5 | | 970FX | | 7448 | +--------------+ +-------+ +----------------+ | | | | | | v v v +--------------+ +-------+ +----------------+ | POWER5+ | | 970MP | | e600 | +--------------+ +-------+ +----------------+ | | v +--------------+ | POWER5++ | +--------------+ | | v +--------------+ +-------+ | POWER6 | <-?-> | Cell | +--------------+ +-------+ | | v +--------------+ | POWER7 | +--------------+ | | v +--------------+ | POWER7+ | +--------------+ | | v +--------------+ | POWER8 | +--------------+ | | v +--------------+ | POWER9 | +--------------+ | | v +--------------+ | POWER10 | +--------------+

    +---------------+ | PA6T (64 bit) | +---------------+

IBM BookE

  • Software loaded TLB.

  • All 32 bit::

    +--------------+ | 440 | +--------------+ | | v +--------------+ +----------------+ | 450 | --> | BG/P | +--------------+ +----------------+ | | v +--------------+ | 460 | +--------------+ | | v +--------------+ | 476 | +--------------+

Motorola/Freescale 8xx

  • Software loaded with hardware assist.

  • All 32 bit::

    +-------------+ | MPC8xx Core | +-------------+

Freescale BookE

  • Software loaded TLB.

  • e6500 adds HW loaded indirect TLB entries.

  • Mix of 32 & 64 bit::

    +--------------+ | e200 | +--------------+

    +--------------------------------+ | e500 | +--------------------------------+ | | v +--------------------------------+ | e500v2 | +--------------------------------+ | | v +--------------------------------+ | e500mc (Book3e) | +--------------------------------+ | | v +--------------------------------+ | e5500 (64 bit) | +--------------------------------+ | | v +--------------------------------+ | e6500 (HW TLB) (Multithreaded) | +--------------------------------+

IBM A2 core

  • Book3E, software loaded TLB + HW loaded indirect TLB entries.

  • 64 bit::

    +--------------+ +----------------+ | A2 core | --> | WSP | +--------------+ +----------------+ | | v +--------------+ | BG/Q | +--------------+