CPU Families¶
This document tries to summarise some of the different cpu families that existand are supported by arch/powerpc.
Book3S (aka sPAPR)¶
Hash MMU (except 603 and e300)
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 |+--------------++---------------+| PA6T (64 bit) |+---------------+
IBM BookE¶
Software loaded TLB.
All 32 bit:
+--------------+| 401 |+--------------+ | | v+--------------+| 403 |+--------------+ | | v+--------------+| 405 |+--------------+ | | v+--------------+| 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 |+--------------+