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         select PHYS_64BIT
  54
  55 config E200
  56         bool "Freescale e200"
  57
  58 endchoice
  59
  60 # Until we have a choice of exclusive CPU types on 64-bit, we always
  61 # use PPC_BOOK3S. On 32-bit, this is equivalent to 6xx which is
  62 # "classic" MMU
  63
  64 config PPC_BOOK3S
  65        def_bool y
  66        depends on PPC64 || 6xx
  67
  68 config POWER4_ONLY
  69         bool "Optimize for POWER4"
  70         depends on PPC64 && PPC_BOOK3S
  71         default n
  72         ---help---
  73           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  74           The resulting binary will not work on POWER3 or RS64 processors
  75           when compiled with binutils 2.15 or later.
  76
  77 config POWER3
  78         bool
  79         depends on PPC64 && PPC_BOOK3S
  80         default y if !POWER4_ONLY
  81
  82 config POWER4
  83         depends on PPC64 && PPC_BOOK3S
  84         def_bool y
  85
  86 config TUNE_CELL
  87         bool "Optimize for Cell Broadband Engine"
  88         depends on PPC64 && PPC_BOOK3S
  89         help
  90           Cause the compiler to optimize for the PPE of the Cell Broadband
  91           Engine. This will make the code run considerably faster on Cell
  92           but somewhat slower on other machines. This option only changes
  93           the scheduling of instructions, not the selection of instructions
  94           itself, so the resulting kernel will keep running on all other
  95           machines. When building a kernel that is supposed to run only
  96           on Cell, you should also select the POWER4_ONLY option.
  97
  98 # this is temp to handle compat with arch=ppc
  99 config 8xx
 100         bool
 101
 102 config E500
 103         select FSL_EMB_PERFMON
 104         bool
 105
 106 config PPC_E500MC
 107         bool "e500mc Support"
 108         select PPC_FPU
 109         depends on E500
 110
 111 config PPC_FPU
 112         bool
 113         default y if PPC64
 114
 115 config 4xx
 116         bool
 117         depends on 40x || 44x
 118         default y
 119
 120 config BOOKE
 121         bool
 122         depends on E200 || E500 || 44x
 123         default y
 124
 125 config FSL_BOOKE
 126         bool
 127         depends on E200 || E500
 128         default y
 129
 130 config FSL_EMB_PERFMON
 131         bool "Freescale Embedded Perfmon"
 132         depends on E500 || PPC_83xx
 133         help
 134           This is the Performance Monitor support found on the e500 core
 135           and some e300 cores (c3 and c4).  Select this only if your
 136           core supports the Embedded Performance Monitor APU
 137
 138 config PTE_64BIT
 139         bool
 140         depends on 44x || E500 || PPC_86xx
 141         default y if PHYS_64BIT
 142
 143 config PHYS_64BIT
 144         bool 'Large physical address support' if E500 || PPC_86xx
 145         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
 146         ---help---
 147           This option enables kernel support for larger than 32-bit physical
 148           addresses.  This feature may not be available on all cores.
 149
 150           If you have more than 3.5GB of RAM or so, you also need to enable
 151           SWIOTLB under Kernel Options for this to work.  The actual number
 152           is platform-dependent.
 153
 154           If in doubt, say N here.
 155
 156 config ALTIVEC
 157         bool "AltiVec Support"
 158         depends on 6xx || POWER4
 159         ---help---
 160           This option enables kernel support for the Altivec extensions to the
 161           PowerPC processor. The kernel currently supports saving and restoring
 162           altivec registers, and turning on the 'altivec enable' bit so user
 163           processes can execute altivec instructions.
 164
 165           This option is only usefully if you have a processor that supports
 166           altivec (G4, otherwise known as 74xx series), but does not have
 167           any affect on a non-altivec cpu (it does, however add code to the
 168           kernel).
 169
 170           If in doubt, say Y here.
 171
 172 config VSX
 173         bool "VSX Support"
 174         depends on POWER4 && ALTIVEC && PPC_FPU
 175         ---help---
 176
 177           This option enables kernel support for the Vector Scaler extensions
 178           to the PowerPC processor. The kernel currently supports saving and
 179           restoring VSX registers, and turning on the 'VSX enable' bit so user
 180           processes can execute VSX instructions.
 181
 182           This option is only useful if you have a processor that supports
 183           VSX (P7 and above), but does not have any affect on a non-VSX
 184           CPUs (it does, however add code to the kernel).
 185
 186           If in doubt, say Y here.
 187
 188 config SPE
 189         bool "SPE Support"
 190         depends on E200 || (E500 && !PPC_E500MC)
 191         default y
 192         ---help---
 193           This option enables kernel support for the Signal Processing
 194           Extensions (SPE) to the PowerPC processor. The kernel currently
 195           supports saving and restoring SPE registers, and turning on the
 196           'spe enable' bit so user processes can execute SPE instructions.
 197
 198           This option is only useful if you have a processor that supports
 199           SPE (e500, otherwise known as 85xx series), but does not have any
 200           effect on a non-spe cpu (it does, however add code to the kernel).
 201
 202           If in doubt, say Y here.
 203
 204 config PPC_STD_MMU
 205         bool
 206         depends on 6xx || PPC64
 207         default y
 208
 209 config PPC_STD_MMU_32
 210         def_bool y
 211         depends on PPC_STD_MMU && PPC32
 212
 213 config PPC_STD_MMU_64
 214         def_bool y
 215         depends on PPC_STD_MMU && PPC64
 216
 217 config PPC_MMU_NOHASH
 218         def_bool y
 219         depends on !PPC_STD_MMU
 220
 221 config PPC_BOOK3E_MMU
 222         def_bool y
 223         depends on FSL_BOOKE
 224
 225 config PPC_MM_SLICES
 226         bool
 227         default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
 228         default n
 229
 230 config VIRT_CPU_ACCOUNTING
 231         bool "Deterministic task and CPU time accounting"
 232         depends on PPC64
 233         default y
 234         help
 235           Select this option to enable more accurate task and CPU time
 236           accounting.  This is done by reading a CPU counter on each
 237           kernel entry and exit and on transitions within the kernel
 238           between system, softirq and hardirq state, so there is a
 239           small performance impact.  This also enables accounting of
 240           stolen time on logically-partitioned systems running on
 241           IBM POWER5-based machines.
 242
 243           If in doubt, say Y here.
 244
 245 config SMP
 246         depends on PPC_STD_MMU || FSL_BOOKE
 247         bool "Symmetric multi-processing support"
 248         ---help---
 249           This enables support for systems with more than one CPU. If you have
 250           a system with only one CPU, say N. If you have a system with more
 251           than one CPU, say Y.  Note that the kernel does not currently
 252           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 253           since they have inadequate hardware support for multiprocessor
 254           operation.
 255
 256           If you say N here, the kernel will run on single and multiprocessor
 257           machines, but will use only one CPU of a multiprocessor machine. If
 258           you say Y here, the kernel will run on single-processor machines.
 259           On a single-processor machine, the kernel will run faster if you say
 260           N here.
 261
 262           If you don't know what to do here, say N.
 263
 264 config NR_CPUS
 265         int "Maximum number of CPUs (2-1024)"
 266         range 2 1024
 267         depends on SMP
 268         default "32" if PPC64
 269         default "4"
 270
 271 config NOT_COHERENT_CACHE
 272         bool
 273         depends on 4xx || 8xx || E200 || PPC_MPC512x
 274         default y
 275
 276 config CHECK_CACHE_COHERENCY
 277         bool
 278
 279 endmenu