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)
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 |+--------------+