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powerpc: Add cpu family documentation
This patch adds some documentation on the different cpu families supported by arch/powerpc. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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CPU Families | ||
============ | ||
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This document tries to summarise some of the different cpu families that exist | ||
and are supported by arch/powerpc. | ||
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Book3S (aka sPAPR) | ||
------------------ | ||
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- Hash MMU | ||
- Mix of 32 & 64 bit | ||
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+--------------+ +----------------+ | ||
| Old POWER | --------------> | RS64 (threads) | | ||
+--------------+ +----------------+ | ||
| | ||
| | ||
v | ||
+--------------+ +----------------+ +------+ | ||
| 601 | --------------> | 603 | ---> | e300 | | ||
+--------------+ +----------------+ +------+ | ||
| | | ||
| | | ||
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 | | 970FX | | 7448 | | ||
+--------------+ +-------+ +----------------+ | ||
| | | | ||
| | | | ||
v v v | ||
+--------------+ +-------+ +----------------+ | ||
| POWER5+ | | 970MP | | e600 | | ||
+--------------+ +-------+ +----------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| POWER5++ | | ||
+--------------+ | ||
| | ||
| | ||
v | ||
+--------------+ +-------+ | ||
| POWER6 | <-?-> | Cell | | ||
+--------------+ +-------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| POWER7 | | ||
+--------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| POWER7+ | | ||
+--------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| POWER8 | | ||
+--------------+ | ||
|
||
|
||
+---------------+ | ||
| PA6T (64 bit) | | ||
+---------------+ | ||
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||
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IBM BookE | ||
--------- | ||
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||
- Software loaded TLB. | ||
- All 32 bit | ||
|
||
+--------------+ | ||
| 401 | | ||
+--------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| 403 | | ||
+--------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| 405 | | ||
+--------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| 440 | | ||
+--------------+ | ||
| | ||
| | ||
v | ||
+--------------+ +----------------+ | ||
| 450 | --> | BG/P | | ||
+--------------+ +----------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| 460 | | ||
+--------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| 476 | | ||
+--------------+ | ||
|
||
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Motorola/Freescale 8xx | ||
---------------------- | ||
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- Software loaded with hardware assist. | ||
- All 32 bit | ||
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+-------------+ | ||
| MPC8xx Core | | ||
+-------------+ | ||
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||
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Freescale BookE | ||
--------------- | ||
|
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- Software loaded TLB. | ||
- e6500 adds HW loaded indirect TLB entries. | ||
- Mix of 32 & 64 bit | ||
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+--------------+ | ||
| e200 | | ||
+--------------+ | ||
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||
|
||
+--------------------------------+ | ||
| e500 | | ||
+--------------------------------+ | ||
| | ||
| | ||
v | ||
+--------------------------------+ | ||
| e500v2 | | ||
+--------------------------------+ | ||
| | ||
| | ||
v | ||
+--------------------------------+ | ||
| e500mc (Book3e) | | ||
+--------------------------------+ | ||
| | ||
| | ||
v | ||
+--------------------------------+ | ||
| e5500 (64 bit) | | ||
+--------------------------------+ | ||
| | ||
| | ||
v | ||
+--------------------------------+ | ||
| e6500 (HW TLB) (Multithreaded) | | ||
+--------------------------------+ | ||
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||
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IBM A2 core | ||
----------- | ||
|
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- Book3E, software loaded TLB + HW loaded indirect TLB entries. | ||
- 64 bit | ||
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+--------------+ +----------------+ | ||
| A2 core | --> | WSP | | ||
+--------------+ +----------------+ | ||
| | ||
| | ||
v | ||
+--------------+ | ||
| BG/Q | | ||
+--------------+ |