arch/powerpc/platforms/Kconfig.cputype

   1 config PPC64
   2         bool "64-bit kernel"
   3         default n
   4         select PPC_HAVE_PMU_SUPPORT
   5         help
   6           This option selects whether a 32-bit or a 64-bit kernel
   7           will be built.
   8
   9 menu "Processor support"
  10 choice
  11         prompt "Processor Type"
  12         depends on PPC32
  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 PPC_BOOK3S_32
  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
  32 config PPC_8xx
  33         bool "Freescale 8xx"
  34         select FSL_SOC
  35         select 8xx
  36         select PPC_LIB_RHEAP
  37
  38 config 40x
  39         bool "AMCC 40x"
  40         select PPC_DCR_NATIVE
  41         select PPC_UDBG_16550
  42         select 4xx_SOC
  43         select PPC_PCI_CHOICE
  44
  45 config 44x
  46         bool "AMCC 44x"
  47         select PPC_DCR_NATIVE
  48         select PPC_UDBG_16550
  49         select 4xx_SOC
  50         select PPC_PCI_CHOICE
  51         select PHYS_64BIT
  52
  53 config E200
  54         bool "Freescale e200"
  55
  56 endchoice
  57
  58 choice
  59         prompt "Processor Type"
  60         depends on PPC64
  61         help
  62           There are two families of 64 bit PowerPC chips supported.
  63           The most common ones are the desktop and server CPUs
  64           (POWER3, RS64, POWER4, POWER5, POWER5+, POWER6, ...)
  65
  66           The other are the "embedded" processors compliant with the
  67           "Book 3E" variant of the architecture
  68
  69 config PPC_BOOK3S_64
  70         bool "Server processors"
  71         select PPC_FPU
  72
  73 config PPC_BOOK3E_64
  74         bool "Embedded processors"
  75         select PPC_FPU # Make it a choice ?
  76
  77 endchoice
  78
  79 config PPC_BOOK3S
  80         def_bool y
  81         depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
  82
  83 config PPC_BOOK3E
  84         def_bool y
  85         depends on PPC_BOOK3E_64
  86
  87 config POWER4_ONLY
  88         bool "Optimize for POWER4"
  89         depends on PPC64 && PPC_BOOK3S
  90         default n
  91         ---help---
  92           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  93           The resulting binary will not work on POWER3 or RS64 processors
  94           when compiled with binutils 2.15 or later.
  95
  96 config 6xx
  97         def_bool y
  98         depends on PPC32 && PPC_BOOK3S
  99         select PPC_HAVE_PMU_SUPPORT
 100
 101 config POWER3
 102         bool
 103         depends on PPC64 && PPC_BOOK3S
 104         default y if !POWER4_ONLY
 105
 106 config POWER4
 107         depends on PPC64 && PPC_BOOK3S
 108         def_bool y
 109
 110 config TUNE_CELL
 111         bool "Optimize for Cell Broadband Engine"
 112         depends on PPC64 && PPC_BOOK3S
 113         help
 114           Cause the compiler to optimize for the PPE of the Cell Broadband
 115           Engine. This will make the code run considerably faster on Cell
 116           but somewhat slower on other machines. This option only changes
 117           the scheduling of instructions, not the selection of instructions
 118           itself, so the resulting kernel will keep running on all other
 119           machines. When building a kernel that is supposed to run only
 120           on Cell, you should also select the POWER4_ONLY option.
 121
 122 # this is temp to handle compat with arch=ppc
 123 config 8xx
 124         bool
 125
 126 config E500
 127         select FSL_EMB_PERFMON
 128         bool
 129
 130 config PPC_E500MC
 131         bool "e500mc Support"
 132         select PPC_FPU
 133         depends on E500
 134
 135 config PPC_FPU
 136         bool
 137         default y if PPC64
 138
 139 config FSL_EMB_PERFMON
 140         bool "Freescale Embedded Perfmon"
 141         depends on E500 || PPC_83xx
 142         help
 143           This is the Performance Monitor support found on the e500 core
 144           and some e300 cores (c3 and c4).  Select this only if your
 145           core supports the Embedded Performance Monitor APU
 146
 147 config 4xx
 148         bool
 149         depends on 40x || 44x
 150         default y
 151
 152 config BOOKE
 153         bool
 154         depends on E200 || E500 || 44x || PPC_BOOK3E
 155         default y
 156
 157 config FSL_BOOKE
 158         bool
 159         depends on E200 || E500
 160         default y
 161
 162
 163 config PTE_64BIT
 164         bool
 165         depends on 44x || E500 || PPC_86xx
 166         default y if PHYS_64BIT
 167
 168 config PHYS_64BIT
 169         bool 'Large physical address support' if E500 || PPC_86xx
 170         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
 171         ---help---
 172           This option enables kernel support for larger than 32-bit physical
 173           addresses.  This feature may not be available on all cores.
 174
 175           If you have more than 3.5GB of RAM or so, you also need to enable
 176           SWIOTLB under Kernel Options for this to work.  The actual number
 177           is platform-dependent.
 178
 179           If in doubt, say N here.
 180
 181 config ALTIVEC
 182         bool "AltiVec Support"
 183         depends on 6xx || POWER4
 184         ---help---
 185           This option enables kernel support for the Altivec extensions to the
 186           PowerPC processor. The kernel currently supports saving and restoring
 187           altivec registers, and turning on the 'altivec enable' bit so user
 188           processes can execute altivec instructions.
 189
 190           This option is only usefully if you have a processor that supports
 191           altivec (G4, otherwise known as 74xx series), but does not have
 192           any affect on a non-altivec cpu (it does, however add code to the
 193           kernel).
 194
 195           If in doubt, say Y here.
 196
 197 config VSX
 198         bool "VSX Support"
 199         depends on POWER4 && ALTIVEC && PPC_FPU
 200         ---help---
 201
 202           This option enables kernel support for the Vector Scaler extensions
 203           to the PowerPC processor. The kernel currently supports saving and
 204           restoring VSX registers, and turning on the 'VSX enable' bit so user
 205           processes can execute VSX instructions.
 206
 207           This option is only useful if you have a processor that supports
 208           VSX (P7 and above), but does not have any affect on a non-VSX
 209           CPUs (it does, however add code to the kernel).
 210
 211           If in doubt, say Y here.
 212
 213 config SPE
 214         bool "SPE Support"
 215         depends on E200 || (E500 && !PPC_E500MC)
 216         default y
 217         ---help---
 218           This option enables kernel support for the Signal Processing
 219           Extensions (SPE) to the PowerPC processor. The kernel currently
 220           supports saving and restoring SPE registers, and turning on the
 221           'spe enable' bit so user processes can execute SPE instructions.
 222
 223           This option is only useful if you have a processor that supports
 224           SPE (e500, otherwise known as 85xx series), but does not have any
 225           effect on a non-spe cpu (it does, however add code to the kernel).
 226
 227           If in doubt, say Y here.
 228
 229 config PPC_STD_MMU
 230         def_bool y
 231         depends on PPC_BOOK3S
 232
 233 config PPC_STD_MMU_32
 234         def_bool y
 235         depends on PPC_STD_MMU && PPC32
 236
 237 config PPC_STD_MMU_64
 238         def_bool y
 239         depends on PPC_STD_MMU && PPC64
 240
 241 config PPC_MMU_NOHASH
 242         def_bool y
 243         depends on !PPC_STD_MMU
 244
 245 config PPC_MMU_NOHASH_32
 246         def_bool y
 247         depends on PPC_MMU_NOHASH && PPC32
 248
 249 config PPC_MMU_NOHASH_64
 250         def_bool y
 251         depends on PPC_MMU_NOHASH && PPC64
 252
 253 config PPC_BOOK3E_MMU
 254         def_bool y
 255         depends on FSL_BOOKE || PPC_BOOK3E
 256
 257 config PPC_MM_SLICES
 258         bool
 259         default y if HUGETLB_PAGE || (PPC_STD_MMU_64 && PPC_64K_PAGES)
 260         default n
 261
 262 config VIRT_CPU_ACCOUNTING
 263         bool "Deterministic task and CPU time accounting"
 264         depends on PPC64
 265         default y
 266         help
 267           Select this option to enable more accurate task and CPU time
 268           accounting.  This is done by reading a CPU counter on each
 269           kernel entry and exit and on transitions within the kernel
 270           between system, softirq and hardirq state, so there is a
 271           small performance impact.  This also enables accounting of
 272           stolen time on logically-partitioned systems running on
 273           IBM POWER5-based machines.
 274
 275           If in doubt, say Y here.
 276
 277 config PPC_HAVE_PMU_SUPPORT
 278        bool
 279
 280 config PPC_PERF_CTRS
 281        def_bool y
 282        depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
 283        help
 284          This enables the powerpc-specific perf_event back-end.
 285
 286 config SMP
 287         depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE
 288         bool "Symmetric multi-processing support"
 289         ---help---
 290           This enables support for systems with more than one CPU. If you have
 291           a system with only one CPU, say N. If you have a system with more
 292           than one CPU, say Y.  Note that the kernel does not currently
 293           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 294           since they have inadequate hardware support for multiprocessor
 295           operation.
 296
 297           If you say N here, the kernel will run on single and multiprocessor
 298           machines, but will use only one CPU of a multiprocessor machine. If
 299           you say Y here, the kernel will run on single-processor machines.
 300           On a single-processor machine, the kernel will run faster if you say
 301           N here.
 302
 303           If you don't know what to do here, say N.
 304
 305 config NR_CPUS
 306         int "Maximum number of CPUs (2-8192)"
 307         range 2 8192
 308         depends on SMP
 309         default "32" if PPC64
 310         default "4"
 311
 312 config NOT_COHERENT_CACHE
 313         bool
 314         depends on 4xx || 8xx || E200 || PPC_MPC512x
 315         default y
 316
 317 config CHECK_CACHE_COHERENCY
 318         bool
 319
 320 endmenu