arch/powerpc/platforms/Kconfig.cputype

   1 config PPC64
   2         bool "64-bit kernel"
   3         default n
   4         help
   5           This option selects whether a 32-bit or a 64-bit kernel
   6           will be built.
   7
   8 menu "Processor support"
   9 choice
  10         prompt "Processor Type"
  11         depends on PPC32
  12         default 6xx
  13         help
  14           There are five families of 32 bit PowerPC chips supported.
  15           The most common ones are the desktop and server CPUs (601, 603,
  16           604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
  17           embedded 52xx/82xx/83xx/86xx counterparts.
  18           The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
  19           (85xx) each form a family of their own that is not compatible
  20           with the others.
  21
  22           If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
  23
  24 config 6xx
  25         bool "52xx/6xx/7xx/74xx/82xx/83xx/86xx"
  26         select PPC_FPU
  27
  28 config PPC_85xx
  29         bool "Freescale 85xx"
  30         select E500
  31         select FSL_SOC
  32         select 85xx
  33         select WANT_DEVICE_TREE
  34
  35 config PPC_8xx
  36         bool "Freescale 8xx"
  37         select FSL_SOC
  38         select 8xx
  39
  40 config 40x
  41         bool "AMCC 40x"
  42         select PPC_DCR_NATIVE
  43
  44 config 44x
  45         bool "AMCC 44x"
  46         select PPC_DCR_NATIVE
  47         select WANT_DEVICE_TREE
  48
  49 config E200
  50         bool "Freescale e200"
  51
  52 endchoice
  53
  54 config POWER4_ONLY
  55         bool "Optimize for POWER4"
  56         depends on PPC64
  57         default n
  58         ---help---
  59           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  60           The resulting binary will not work on POWER3 or RS64 processors
  61           when compiled with binutils 2.15 or later.
  62
  63 config POWER3
  64         bool
  65         depends on PPC64
  66         default y if !POWER4_ONLY
  67
  68 config POWER4
  69         depends on PPC64
  70         def_bool y
  71
  72 config 6xx
  73         bool
  74
  75 # this is temp to handle compat with arch=ppc
  76 config 8xx
  77         bool
  78
  79 # this is temp to handle compat with arch=ppc
  80 config 83xx
  81         bool
  82
  83 # this is temp to handle compat with arch=ppc
  84 config 85xx
  85         bool
  86
  87 config E500
  88         bool
  89
  90 config PPC_FPU
  91         bool
  92         default y if PPC64
  93
  94 config 4xx
  95         bool
  96         depends on 40x || 44x
  97         default y
  98
  99 config BOOKE
 100         bool
 101         depends on E200 || E500 || 44x
 102         default y
 103
 104 config FSL_BOOKE
 105         bool
 106         depends on E200 || E500
 107         default y
 108
 109 config PTE_64BIT
 110         bool
 111         depends on 44x || E500
 112         default y if 44x
 113         default y if E500 && PHYS_64BIT
 114
 115 config PHYS_64BIT
 116         bool 'Large physical address support' if E500
 117         depends on 44x || E500
 118         select RESOURCES_64BIT
 119         default y if 44x
 120         ---help---
 121           This option enables kernel support for larger than 32-bit physical
 122           addresses.  This features is not be available on all e500 cores.
 123
 124           If in doubt, say N here.
 125
 126 config ALTIVEC
 127         bool "AltiVec Support"
 128         depends on CLASSIC32 || POWER4
 129         ---help---
 130           This option enables kernel support for the Altivec extensions to the
 131           PowerPC processor. The kernel currently supports saving and restoring
 132           altivec registers, and turning on the 'altivec enable' bit so user
 133           processes can execute altivec instructions.
 134
 135           This option is only usefully if you have a processor that supports
 136           altivec (G4, otherwise known as 74xx series), but does not have
 137           any affect on a non-altivec cpu (it does, however add code to the
 138           kernel).
 139
 140           If in doubt, say Y here.
 141
 142 config SPE
 143         bool "SPE Support"
 144         depends on E200 || E500
 145         default y
 146         ---help---
 147           This option enables kernel support for the Signal Processing
 148           Extensions (SPE) to the PowerPC processor. The kernel currently
 149           supports saving and restoring SPE registers, and turning on the
 150           'spe enable' bit so user processes can execute SPE instructions.
 151
 152           This option is only useful if you have a processor that supports
 153           SPE (e500, otherwise known as 85xx series), but does not have any
 154           effect on a non-spe cpu (it does, however add code to the kernel).
 155
 156           If in doubt, say Y here.
 157
 158 config PPC_STD_MMU
 159         bool
 160         depends on 6xx || POWER3 || POWER4 || PPC64
 161         default y
 162
 163 config PPC_STD_MMU_32
 164         def_bool y
 165         depends on PPC_STD_MMU && PPC32
 166
 167 config PPC_MM_SLICES
 168         bool
 169         default y if HUGETLB_PAGE
 170         default n
 171
 172 config VIRT_CPU_ACCOUNTING
 173         bool "Deterministic task and CPU time accounting"
 174         depends on PPC64
 175         default y
 176         help
 177           Select this option to enable more accurate task and CPU time
 178           accounting.  This is done by reading a CPU counter on each
 179           kernel entry and exit and on transitions within the kernel
 180           between system, softirq and hardirq state, so there is a
 181           small performance impact.  This also enables accounting of
 182           stolen time on logically-partitioned systems running on
 183           IBM POWER5-based machines.
 184
 185           If in doubt, say Y here.
 186
 187 config SMP
 188         depends on PPC_STD_MMU
 189         bool "Symmetric multi-processing support"
 190         ---help---
 191           This enables support for systems with more than one CPU. If you have
 192           a system with only one CPU, say N. If you have a system with more
 193           than one CPU, say Y.  Note that the kernel does not currently
 194           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 195           since they have inadequate hardware support for multiprocessor
 196           operation.
 197
 198           If you say N here, the kernel will run on single and multiprocessor
 199           machines, but will use only one CPU of a multiprocessor machine. If
 200           you say Y here, the kernel will run on single-processor machines.
 201           On a single-processor machine, the kernel will run faster if you say
 202           N here.
 203
 204           If you don't know what to do here, say N.
 205
 206 config NR_CPUS
 207         int "Maximum number of CPUs (2-128)"
 208         range 2 128
 209         depends on SMP
 210         default "32" if PPC64
 211         default "4"
 212
 213 config NOT_COHERENT_CACHE
 214         bool
 215         depends on 4xx || 8xx || E200
 216         default y
 217
 218 config CHECK_CACHE_COHERENCY
 219         bool
 220
 221 endmenu