LXR linux/Documentation/powerpc/cpu

   1============
   2CPU Families
   3============
   4
   5This document tries to summarise some of the different cpu families that exist
   6and are supported by arch/powerpc.
   7
   8
   9Book3S (aka sPAPR)
  10------------------
  11
  12- Hash MMU (except 603 and e300)
  13- Software loaded TLB (603 and e300)
  14- Selectable Software loaded TLB in addition to hash MMU (755, 7450, e600)
  15- Mix of 32 & 64 bit::
  16
  17   +--------------+                 +----------------+
  18   |  Old POWER   | --------------> | RS64 (threads) |
  19   +--------------+                 +----------------+
  20          |
  21          |
  22          v
  23   +--------------+                 +----------------+      +------+
  24   |     601      | --------------> |      603       | ---> | e300 |
  25   +--------------+                 +----------------+      +------+
  26          |                                 |
  27          |                                 |
  28          v                                 v
  29   +--------------+    +-----+      +----------------+      +-------+
  30   |     604      |    | 755 | <--- |    750 (G3)    | ---> | 750CX |
  31   +--------------+    +-----+      +----------------+      +-------+
  32          |                                 |                   |
  33          |                                 |                   |
  34          v                                 v                   v
  35   +--------------+                 +----------------+      +-------+
  36   | 620 (64 bit) |                 |      7400      |      | 750CL |
  37   +--------------+                 +----------------+      +-------+
  38          |                                 |                   |
  39          |                                 |                   |
  40          v                                 v                   v
  41   +--------------+                 +----------------+      +-------+
  42   |  POWER3/630  |                 |      7410      |      | 750FX |
  43   +--------------+                 +----------------+      +-------+
  44          |                                 |
  45          |                                 |
  46          v                                 v
  47   +--------------+                 +----------------+
  48   |   POWER3+    |                 |      7450      |
  49   +--------------+                 +----------------+
  50          |                                 |
  51          |                                 |
  52          v                                 v
  53   +--------------+                 +----------------+
  54   |    POWER4    |                 |      7455      |
  55   +--------------+                 +----------------+
  56          |                                 |
  57          |                                 |
  58          v                                 v
  59   +--------------+     +-------+   +----------------+
  60   |   POWER4+    | --> |  970  |   |      7447      |
  61   +--------------+     +-------+   +----------------+
  62          |                 |               |
  63          |                 |               |
  64          v                 v               v
  65   +--------------+     +-------+   +----------------+
  66   |    POWER5    |     | 970FX |   |      7448      |
  67   +--------------+     +-------+   +----------------+
  68          |                 |               |
  69          |                 |               |
  70          v                 v               v
  71   +--------------+     +-------+   +----------------+
  72   |   POWER5+    |     | 970MP |   |      e600      |
  73   +--------------+     +-------+   +----------------+
  74          |
  75          |
  76          v
  77   +--------------+
  78   |   POWER5++   |
  79   +--------------+
  80          |
  81          |
  82          v
  83   +--------------+       +-------+
  84   |    POWER6    | <-?-> | Cell  |
  85   +--------------+       +-------+
  86          |
  87          |
  88          v
  89   +--------------+
  90   |    POWER7    |
  91   +--------------+
  92          |
  93          |
  94          v
  95   +--------------+
  96   |   POWER7+    |
  97   +--------------+
  98          |
  99          |
 100          v
 101   +--------------+
 102   |    POWER8    |
 103   +--------------+
 104
 105
 106   +---------------+
 107   | PA6T (64 bit) |
 108   +---------------+
 109
 110
 111IBM BookE
 112---------
 113
 114- Software loaded TLB.
 115- All 32 bit::
 116
 117   +--------------+
 118   |     401      |
 119   +--------------+
 120          |
 121          |
 122          v
 123   +--------------+
 124   |     403      |
 125   +--------------+
 126          |
 127          |
 128          v
 129   +--------------+
 130   |     405      |
 131   +--------------+
 132          |
 133          |
 134          v
 135   +--------------+
 136   |     440      |
 137   +--------------+
 138          |
 139          |
 140          v
 141   +--------------+     +----------------+
 142   |     450      | --> |      BG/P      |
 143   +--------------+     +----------------+
 144          |
 145          |
 146          v
 147   +--------------+
 148   |     460      |
 149   +--------------+
 150          |
 151          |
 152          v
 153   +--------------+
 154   |     476      |
 155   +--------------+
 156
 157
 158Motorola/Freescale 8xx
 159----------------------
 160
 161- Software loaded with hardware assist.
 162- All 32 bit::
 163
 164   +-------------+
 165   | MPC8xx Core |
 166   +-------------+
 167
 168
 169Freescale BookE
 170---------------
 171
 172- Software loaded TLB.
 173- e6500 adds HW loaded indirect TLB entries.
 174- Mix of 32 & 64 bit::
 175
 176   +--------------+
 177   |     e200     |
 178   +--------------+
 179
 180
 181   +--------------------------------+
 182   |              e500              |
 183   +--------------------------------+
 184                   |
 185                   |
 186                   v
 187   +--------------------------------+
 188   |             e500v2             |
 189   +--------------------------------+
 190                   |
 191                   |
 192                   v
 193   +--------------------------------+
 194   |        e500mc (Book3e)         |
 195   +--------------------------------+
 196                   |
 197                   |
 198                   v
 199   +--------------------------------+
 200   |          e5500 (64 bit)        |
 201   +--------------------------------+
 202                   |
 203                   |
 204                   v
 205   +--------------------------------+
 206   | e6500 (HW TLB) (Multithreaded) |
 207   +--------------------------------+
 208
 209
 210IBM A2 core
 211-----------
 212
 213- Book3E, software loaded TLB + HW loaded indirect TLB entries.
 214- 64 bit::
 215
 216   +--------------+     +----------------+
 217   |   A2 core    | --> |      WSP       |
 218   +--------------+     +----------------+
 219           |
 220           |
 221           v
 222   +--------------+
 223   |     BG/Q     |
 224   +--------------+
 225