[PATCH v2] powerpc: Add cpu family documentation
Michael Ellerman
mpe at ellerman.id.au
Wed Apr 30 16:45:08 EST 2014
On Tue, 2014-02-04 at 16:43 -0600, Scott Wood wrote:
> On Sat, 2014-02-01 at 15:35 +1100, Michael Ellerman wrote:
> > This patch adds some documentation on the different cpu families
> > supported by arch/powerpc.
> >
> > Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> > ---
> > v2: Reworked formatting to avoid wrapping.
> > Fixed up Freescale details.
> >
> >
> > Documentation/powerpc/cpu_families.txt | 227 +++++++++++++++++++++++++++++++++
> > 1 file changed, 227 insertions(+)
> > create mode 100644 Documentation/powerpc/cpu_families.txt
> >
> > diff --git a/Documentation/powerpc/cpu_families.txt b/Documentation/powerpc/cpu_families.txt
> > new file mode 100644
> > index 0000000..fa4f159
> > --- /dev/null
> > +++ b/Documentation/powerpc/cpu_families.txt
> > @@ -0,0 +1,227 @@
> > +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
> > + - Mix of 32 & 64 bit
> > +
> > + +--------------+ +----------------+
> > + | Old POWER | ---------------------------> | RS64 (threads) |
> > + +--------------+ +----------------+
> > + |
> > + |
> > + v
> > + +--------------+ +----------------+ +-------+
> > + | 601 | ---------------------------> | 603 | -> | 740 |
> > + +--------------+ +----------------+ +-------+
> > + | |
> > + | |
> > + v v
> > + +--------------+ +----------------+ +-------+
> > + | 604 | | 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 | --> | Cell | | 970FX | | 7448 |
> > + +--------------+ +-------+ +-------+ +----------------+
> > + | |
> > + | |
> > + v v
> > + +--------------+ +-------+
> > + | POWER5+ | | 970MP |
> > + +--------------+ +-------+
> > + |
> > + |
> > + v
> > + +--------------+
> > + | POWER5++ |
> > + +--------------+
> > + |
> > + |
> > + v
> > + +--------------+
> > + | POWER6 |
> > + +--------------+
> > + |
> > + |
> > + v
> > + +--------------+
> > + | POWER7 |
> > + +--------------+
> > + |
> > + |
> > + v
> > + +--------------+
> > + | POWER7+ |
> > + +--------------+
> > + |
> > + |
> > + v
> > + +--------------+
> > + | POWER8 |
> > + +--------------+
> > +
> > +
> > + +---------------+
> > + | PA6T (64 bit) |
> > + +---------------+
>
> Missing e300 (603 derivative) and e600 (7448 derivative).
Happy to add them, where do they hang off?
> > +IBM BookE
> > +---------
> > +
> > + - Software loaded TLB.
> > + - All 32 bit
> > +
> > + +--------------+
> > + | 401 |
> > + +--------------+
> > + |
> > + |
> > + v
> > + +--------------+
> > + | 403 |
> > + +--------------+
> > + |
> > + |
> > + v
> > + +--------------+
> > + | 405 |
> > + +--------------+
> > + |
> > + |
> > + v
>
> Are 40x considered booke?
You tell me.
> > +Motorola/Freescale 8xx
> > +----------------------
> > +
> > + - Software loaded with hardware assist.
> > + - All 32 bit
> > +
> > + +--------------+
> > + | 8xx |
> > + +--------------+
> > + |
> > + |
> > + v
> > + +--------------+
> > + | 850 |
> > + +--------------+
>
> Is the core of MPC850 different from other MPC8xx?
Dunno, maybe someone who works at Freescale knows ;)
> > +Freescale BookE
> > +---------------
> > +
> > + - Software loaded TLB.
> > + - e6500 adds HW loaded indirect TLB entries.
> > + - Mix of 32 & 64 bit
> > +
> > + +--------------+
> > + | e200 |
> > + +--------------+
> > +
> > +
> > + +--------------------------------+
> > + | e500 |
> > + +--------------------------------+
> > + |
> > + |
> > + v
> > + +--------------------------------+
> > + | e500v2 |
> > + +--------------------------------+
> > + |
> > + |
> > + v
> > + +--------------------------------+
> > + | e500mc |
> > + +--------------------------------+
> > + |
> > + |
> > + v
> > + +--------------------------------+
> > + | e5500 (Book3e) (64 bit) |
> > + +--------------------------------+
> > + |
> > + |
> > + v
> > + +--------------------------------+
> > + | e6500 (HW TLB) (Multithreaded) |
> > + +--------------------------------+
>
> Why (Book3e) on e5500? e500mc is also an ISA 2.06 book3e core.
OK. I'll move Book3e to e500mc. It's implied that it continues to apply to the
derivatives.
cheers
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