This patch adds some documentation on the different cpu families
supported by arch/powerpc.
Signed-off-by: Michael Ellerman <m...@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) |
+ +---------------+
+
+
+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
+
+ +--------------+
+ | 8xx |
+ +--------------+
+ |
+ |
+ v
+ +--------------+
+ | 850 |
+ +--------------+
+
+
+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) |
+ +--------------------------------+
+
+
+IBM A2 core
+-----------
+
+ - Book3E, software loaded TLB + HW loaded indirect TLB entries.
+ - 64 bit
+
+ +--------------+ +----------------+
+ | A2 core | --> | WSP |
+ +--------------+ +----------------+
+ |
+ |
+ v
+ +--------------+
+ | BG/Q |
+ +--------------+
--
1.8.3.2
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
