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| author | Costa Shulyupin <costa.shul@redhat.com> | 2023-08-26 19:56:08 +0300 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2023-10-10 22:35:55 +0300 |
| commit | 17e02586ed18501c11115b8dea9055a5973f45a4 (patch) | |
| tree | aabd2f7273060d14ea90bdcb0fa1bf28972f90ef /Documentation/arch/powerpc/cpu_families.rst | |
| parent | 2087f270bebb78adc5059fd040e2691cd7f9bb5c (diff) | |
| download | linux-17e02586ed18501c11115b8dea9055a5973f45a4.tar.xz | |
docs: move powerpc under arch
and fix all in-tree references.
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy.
Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20230826165737.2101199-1-costa.shul@redhat.com
Diffstat (limited to 'Documentation/arch/powerpc/cpu_families.rst')
| -rw-r--r-- | Documentation/arch/powerpc/cpu_families.rst | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/Documentation/arch/powerpc/cpu_families.rst b/Documentation/arch/powerpc/cpu_families.rst new file mode 100644 index 000000000000..eb7e60649b43 --- /dev/null +++ b/Documentation/arch/powerpc/cpu_families.rst @@ -0,0 +1,237 @@ +============ +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:: + + +--------------+ + | 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 | + +--------------+ |