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 512x/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 "512x/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 MPC85xx
  33
  34 config PPC_8xx
  35         bool "Freescale 8xx"
  36         select FSL_SOC
  37         select 8xx
  38         select PPC_LIB_RHEAP
  39
  40 config 40x
  41         bool "AMCC 40x"
  42         select PPC_DCR_NATIVE
  43         select PPC_UDBG_16550
  44         select 4xx_SOC
  45         select PPC_PCI_CHOICE
  46
  47 config 44x
  48         bool "AMCC 44x"
  49         select PPC_DCR_NATIVE
  50         select PPC_UDBG_16550
  51         select 4xx_SOC
  52         select PPC_PCI_CHOICE
  53
  54 config E200
  55         bool "Freescale e200"
  56
  57 endchoice
  58
  59 config POWER4_ONLY
  60         bool "Optimize for POWER4"
  61         depends on PPC64
  62         default n
  63         ---help---
  64           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  65           The resulting binary will not work on POWER3 or RS64 processors
  66           when compiled with binutils 2.15 or later.
  67
  68 config POWER3
  69         bool
  70         depends on PPC64
  71         default y if !POWER4_ONLY
  72
  73 config POWER4
  74         depends on PPC64
  75         def_bool y
  76
  77 config TUNE_CELL
  78         bool "Optimize for Cell Broadband Engine"
  79         depends on PPC64
  80         help
  81           Cause the compiler to optimize for the PPE of the Cell Broadband
  82           Engine. This will make the code run considerably faster on Cell
  83           but somewhat slower on other machines. This option only changes
  84           the scheduling of instructions, not the selection of instructions
  85           itself, so the resulting kernel will keep running on all other
  86           machines. When building a kernel that is supposed to run only
  87           on Cell, you should also select the POWER4_ONLY option.
  88
  89 # this is temp to handle compat with arch=ppc
  90 config 8xx
  91         bool
  92
  93 config E500
  94         select FSL_EMB_PERFMON
  95         bool
  96
  97 config PPC_E500MC
  98         bool "e500mc Support"
  99         select PPC_FPU
 100         depends on E500
 101
 102 config PPC_FPU
 103         bool
 104         default y if PPC64
 105
 106 config 4xx
 107         bool
 108         depends on 40x || 44x
 109         default y
 110
 111 config BOOKE
 112         bool
 113         depends on E200 || E500 || 44x
 114         default y
 115
 116 config FSL_BOOKE
 117         bool
 118         depends on E200 || E500
 119         default y
 120
 121 config FSL_EMB_PERFMON
 122         bool "Freescale Embedded Perfmon"
 123         depends on E500 || PPC_83xx
 124         help
 125           This is the Performance Monitor support found on the e500 core
 126           and some e300 cores (c3 and c4).  Select this only if your
 127           core supports the Embedded Performance Monitor APU
 128
 129 config PTE_64BIT
 130         bool
 131         depends on 44x || E500
 132         default y if 44x
 133         default y if E500 && PHYS_64BIT
 134
 135 config PHYS_64BIT
 136         bool 'Large physical address support' if E500
 137         depends on 44x || E500
 138         select RESOURCES_64BIT
 139         default y if 44x
 140         ---help---
 141           This option enables kernel support for larger than 32-bit physical
 142           addresses.  This features is not be available on all e500 cores.
 143
 144           If in doubt, say N here.
 145
 146 config ALTIVEC
 147         bool "AltiVec Support"
 148         depends on CLASSIC32 || POWER4
 149         ---help---
 150           This option enables kernel support for the Altivec extensions to the
 151           PowerPC processor. The kernel currently supports saving and restoring
 152           altivec registers, and turning on the 'altivec enable' bit so user
 153           processes can execute altivec instructions.
 154
 155           This option is only usefully if you have a processor that supports
 156           altivec (G4, otherwise known as 74xx series), but does not have
 157           any affect on a non-altivec cpu (it does, however add code to the
 158           kernel).
 159
 160           If in doubt, say Y here.
 161
 162 config VSX
 163         bool "VSX Support"
 164         depends on POWER4 && ALTIVEC && PPC_FPU
 165         ---help---
 166
 167           This option enables kernel support for the Vector Scaler extensions
 168           to the PowerPC processor. The kernel currently supports saving and
 169           restoring VSX registers, and turning on the 'VSX enable' bit so user
 170           processes can execute VSX instructions.
 171
 172           This option is only useful if you have a processor that supports
 173           VSX (P7 and above), but does not have any affect on a non-VSX
 174           CPUs (it does, however add code to the kernel).
 175
 176           If in doubt, say Y here.
 177
 178 config SPE
 179         bool "SPE Support"
 180         depends on E200 || (E500 && !PPC_E500MC)
 181         default y
 182         ---help---
 183           This option enables kernel support for the Signal Processing
 184           Extensions (SPE) to the PowerPC processor. The kernel currently
 185           supports saving and restoring SPE registers, and turning on the
 186           'spe enable' bit so user processes can execute SPE instructions.
 187
 188           This option is only useful if you have a processor that supports
 189           SPE (e500, otherwise known as 85xx series), but does not have any
 190           effect on a non-spe cpu (it does, however add code to the kernel).
 191
 192           If in doubt, say Y here.
 193
 194 config PPC_STD_MMU
 195         bool
 196         depends on 6xx || POWER3 || POWER4 || PPC64
 197         default y
 198
 199 config PPC_STD_MMU_32
 200         def_bool y
 201         depends on PPC_STD_MMU && PPC32
 202
 203 config PPC_MM_SLICES
 204         bool
 205         default y if HUGETLB_PAGE || PPC_64K_PAGES
 206         default n
 207
 208 config VIRT_CPU_ACCOUNTING
 209         bool "Deterministic task and CPU time accounting"
 210         depends on PPC64
 211         default y
 212         help
 213           Select this option to enable more accurate task and CPU time
 214           accounting.  This is done by reading a CPU counter on each
 215           kernel entry and exit and on transitions within the kernel
 216           between system, softirq and hardirq state, so there is a
 217           small performance impact.  This also enables accounting of
 218           stolen time on logically-partitioned systems running on
 219           IBM POWER5-based machines.
 220
 221           If in doubt, say Y here.
 222
 223 config SMP
 224         depends on PPC_STD_MMU
 225         bool "Symmetric multi-processing support"
 226         ---help---
 227           This enables support for systems with more than one CPU. If you have
 228           a system with only one CPU, say N. If you have a system with more
 229           than one CPU, say Y.  Note that the kernel does not currently
 230           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 231           since they have inadequate hardware support for multiprocessor
 232           operation.
 233
 234           If you say N here, the kernel will run on single and multiprocessor
 235           machines, but will use only one CPU of a multiprocessor machine. If
 236           you say Y here, the kernel will run on single-processor machines.
 237           On a single-processor machine, the kernel will run faster if you say
 238           N here.
 239
 240           If you don't know what to do here, say N.
 241
 242 config NR_CPUS
 243         int "Maximum number of CPUs (2-1024)"
 244         range 2 1024
 245         depends on SMP
 246         default "32" if PPC64
 247         default "4"
 248
 249 config NOT_COHERENT_CACHE
 250         bool
 251         depends on 4xx || 8xx || E200 || PPC_MPC512x
 252         default y
 253
 254 config CHECK_CACHE_COHERENCY
 255         bool
 256
 257 endmenu