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 | +--------------+