TOMOYO Linux Cross Reference
Linux/Documentation/arch/powerpc/cpu_families.rst

   ============
   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::
 
    +--------------+
    |     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     |
    +--------------+

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