arch/powerpc/platforms/Kconfig.cputype

   1 config PPC64
   2         bool "64-bit kernel"
   3         default n
   4         select ZLIB_DEFLATE
   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 embedded 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, 46x or 47x"
  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           (POWER4, POWER5, 970, POWER5+, POWER6, POWER7, POWER8 ...)
  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         select PPC_HAVE_PMU_SUPPORT
  73         select SYS_SUPPORTS_HUGETLBFS
  74         select HAVE_ARCH_TRANSPARENT_HUGEPAGE
  75         select ARCH_SUPPORTS_NUMA_BALANCING
  76         select IRQ_WORK
  77
  78 config PPC_BOOK3E_64
  79         bool "Embedded processors"
  80         select PPC_FPU # Make it a choice ?
  81         select PPC_SMP_MUXED_IPI
  82         select PPC_DOORBELL
  83
  84 endchoice
  85
  86 choice
  87         prompt "CPU selection"
  88         depends on PPC64
  89         default GENERIC_CPU
  90         help
  91           This will create a kernel which is optimised for a particular CPU.
  92           The resulting kernel may not run on other CPUs, so use this with care.
  93
  94           If unsure, select Generic.
  95
  96 config GENERIC_CPU
  97         bool "Generic"
  98         depends on !CPU_LITTLE_ENDIAN
  99
 100 config CELL_CPU
 101         bool "Cell Broadband Engine"
 102         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 103
 104 config POWER4_CPU
 105         bool "POWER4"
 106         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 107
 108 config POWER5_CPU
 109         bool "POWER5"
 110         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 111
 112 config POWER6_CPU
 113         bool "POWER6"
 114         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 115
 116 config POWER7_CPU
 117         bool "POWER7"
 118         depends on PPC_BOOK3S_64
 119         select ARCH_HAS_FAST_MULTIPLIER
 120
 121 config POWER8_CPU
 122         bool "POWER8"
 123         depends on PPC_BOOK3S_64
 124         select ARCH_HAS_FAST_MULTIPLIER
 125
 126 config E5500_CPU
 127         bool "Freescale e5500"
 128         depends on E500
 129
 130 config E6500_CPU
 131         bool "Freescale e6500"
 132         depends on E500
 133
 134 endchoice
 135
 136 config PPC_BOOK3S
 137         def_bool y
 138         depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
 139
 140 config PPC_BOOK3E
 141         def_bool y
 142         depends on PPC_BOOK3E_64
 143
 144 config 6xx
 145         def_bool y
 146         depends on PPC32 && PPC_BOOK3S
 147         select PPC_HAVE_PMU_SUPPORT
 148
 149 # this is temp to handle compat with arch=ppc
 150 config 8xx
 151         bool
 152
 153 config E500
 154         select FSL_EMB_PERFMON
 155         select PPC_FSL_BOOK3E
 156         bool
 157
 158 config PPC_E500MC
 159         bool "e500mc Support"
 160         select PPC_FPU
 161         select COMMON_CLK
 162         depends on E500
 163         help
 164           This must be enabled for running on e500mc (and derivatives
 165           such as e5500/e6500), and must be disabled for running on
 166           e500v1 or e500v2.
 167
 168 config PPC_FPU
 169         bool
 170         default y if PPC64
 171
 172 config FSL_EMB_PERFMON
 173         bool "Freescale Embedded Perfmon"
 174         depends on E500 || PPC_83xx
 175         help
 176           This is the Performance Monitor support found on the e500 core
 177           and some e300 cores (c3 and c4).  Select this only if your
 178           core supports the Embedded Performance Monitor APU
 179
 180 config FSL_EMB_PERF_EVENT
 181         bool
 182         depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
 183         default y
 184
 185 config FSL_EMB_PERF_EVENT_E500
 186         bool
 187         depends on FSL_EMB_PERF_EVENT && E500
 188         default y
 189
 190 config 4xx
 191         bool
 192         depends on 40x || 44x
 193         default y
 194
 195 config BOOKE
 196         bool
 197         depends on E200 || E500 || 44x || PPC_BOOK3E
 198         default y
 199
 200 config FSL_BOOKE
 201         bool
 202         depends on (E200 || E500) && PPC32
 203         default y
 204
 205 # this is for common code between PPC32 & PPC64 FSL BOOKE
 206 config PPC_FSL_BOOK3E
 207         bool
 208         select FSL_EMB_PERFMON
 209         select PPC_SMP_MUXED_IPI
 210         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
 211         select PPC_DOORBELL
 212         default y if FSL_BOOKE
 213
 214 config PTE_64BIT
 215         bool
 216         depends on 44x || E500 || PPC_86xx
 217         default y if PHYS_64BIT
 218
 219 config PHYS_64BIT
 220         bool 'Large physical address support' if E500 || PPC_86xx
 221         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
 222         ---help---
 223           This option enables kernel support for larger than 32-bit physical
 224           addresses.  This feature may not be available on all cores.
 225
 226           If you have more than 3.5GB of RAM or so, you also need to enable
 227           SWIOTLB under Kernel Options for this to work.  The actual number
 228           is platform-dependent.
 229
 230           If in doubt, say N here.
 231
 232 config ALTIVEC
 233         bool "AltiVec Support"
 234         depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
 235         ---help---
 236           This option enables kernel support for the Altivec extensions to the
 237           PowerPC processor. The kernel currently supports saving and restoring
 238           altivec registers, and turning on the 'altivec enable' bit so user
 239           processes can execute altivec instructions.
 240
 241           This option is only usefully if you have a processor that supports
 242           altivec (G4, otherwise known as 74xx series), but does not have
 243           any affect on a non-altivec cpu (it does, however add code to the
 244           kernel).
 245
 246           If in doubt, say Y here.
 247
 248 config VSX
 249         bool "VSX Support"
 250         depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
 251         ---help---
 252
 253           This option enables kernel support for the Vector Scaler extensions
 254           to the PowerPC processor. The kernel currently supports saving and
 255           restoring VSX registers, and turning on the 'VSX enable' bit so user
 256           processes can execute VSX instructions.
 257
 258           This option is only useful if you have a processor that supports
 259           VSX (P7 and above), but does not have any affect on a non-VSX
 260           CPUs (it does, however add code to the kernel).
 261
 262           If in doubt, say Y here.
 263
 264 config PPC_ICSWX
 265         bool "Support for PowerPC icswx coprocessor instruction"
 266         depends on PPC_BOOK3S_64
 267         default n
 268         ---help---
 269
 270           This option enables kernel support for the PowerPC Initiate
 271           Coprocessor Store Word (icswx) coprocessor instruction on POWER7
 272           or newer processors.
 273
 274           This option is only useful if you have a processor that supports
 275           the icswx coprocessor instruction. It does not have any effect
 276           on processors without the icswx coprocessor instruction.
 277
 278           This option slightly increases kernel memory usage.
 279
 280           If in doubt, say N here.
 281
 282 config PPC_ICSWX_PID
 283         bool "icswx requires direct PID management"
 284         depends on PPC_ICSWX
 285         default y
 286         ---help---
 287           The PID register in server is used explicitly for ICSWX.  In
 288           embedded systems PID management is done by the system.
 289
 290 config PPC_ICSWX_USE_SIGILL
 291         bool "Should a bad CT cause a SIGILL?"
 292         depends on PPC_ICSWX
 293         default n
 294         ---help---
 295           Should a bad CT used for "non-record form ICSWX" cause an
 296           illegal instruction signal or should it be silent as
 297           architected.
 298
 299           If in doubt, say N here.
 300
 301 config SPE_POSSIBLE
 302         def_bool y
 303         depends on E200 || (E500 && !PPC_E500MC)
 304
 305 config SPE
 306         bool "SPE Support"
 307         depends on SPE_POSSIBLE
 308         default y
 309         ---help---
 310           This option enables kernel support for the Signal Processing
 311           Extensions (SPE) to the PowerPC processor. The kernel currently
 312           supports saving and restoring SPE registers, and turning on the
 313           'spe enable' bit so user processes can execute SPE instructions.
 314
 315           This option is only useful if you have a processor that supports
 316           SPE (e500, otherwise known as 85xx series), but does not have any
 317           effect on a non-spe cpu (it does, however add code to the kernel).
 318
 319           If in doubt, say Y here.
 320
 321 config PPC_STD_MMU
 322         def_bool y
 323         depends on PPC_BOOK3S
 324
 325 config PPC_STD_MMU_32
 326         def_bool y
 327         depends on PPC_STD_MMU && PPC32
 328
 329 config PPC_STD_MMU_64
 330         def_bool y
 331         depends on PPC_STD_MMU && PPC64
 332
 333 config PPC_RADIX_MMU
 334         bool "Radix MMU Support"
 335         depends on PPC_BOOK3S_64
 336         default y
 337         help
 338           Enable support for the Power ISA 3.0 Radix style MMU. Currently this
 339           is only implemented by IBM Power9 CPUs, if you don't have one of them
 340           you can probably disable this.
 341
 342 config PPC_MMU_NOHASH
 343         def_bool y
 344         depends on !PPC_STD_MMU
 345
 346 config PPC_BOOK3E_MMU
 347         def_bool y
 348         depends on FSL_BOOKE || PPC_BOOK3E
 349
 350 config PPC_MM_SLICES
 351         bool
 352         default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
 353         default n
 354
 355 config PPC_HAVE_PMU_SUPPORT
 356        bool
 357
 358 config PPC_PERF_CTRS
 359        def_bool y
 360        depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
 361        help
 362          This enables the powerpc-specific perf_event back-end.
 363
 364 config SMP
 365         depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
 366         bool "Symmetric multi-processing support"
 367         ---help---
 368           This enables support for systems with more than one CPU. If you have
 369           a system with only one CPU, say N. If you have a system with more
 370           than one CPU, say Y.  Note that the kernel does not currently
 371           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 372           since they have inadequate hardware support for multiprocessor
 373           operation.
 374
 375           If you say N here, the kernel will run on single and multiprocessor
 376           machines, but will use only one CPU of a multiprocessor machine. If
 377           you say Y here, the kernel will run on single-processor machines.
 378           On a single-processor machine, the kernel will run faster if you say
 379           N here.
 380
 381           If you don't know what to do here, say N.
 382
 383 config NR_CPUS
 384         int "Maximum number of CPUs (2-8192)"
 385         range 2 8192
 386         depends on SMP
 387         default "32" if PPC64
 388         default "4"
 389
 390 config NOT_COHERENT_CACHE
 391         bool
 392         depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
 393         default n if PPC_47x
 394         default y
 395
 396 config CHECK_CACHE_COHERENCY
 397         bool
 398
 399 config PPC_DOORBELL
 400         bool
 401         default n
 402
 403 endmenu
 404
 405 config VDSO32
 406         def_bool y
 407         depends on PPC32 || CPU_BIG_ENDIAN
 408         help
 409           This symbol controls whether we build the 32-bit VDSO. We obviously
 410           want to do that if we're building a 32-bit kernel. If we're building
 411           a 64-bit kernel then we only want a 32-bit VDSO if we're building for
 412           big endian. That is because the only little endian configuration we
 413           support is ppc64le which is 64-bit only.
 414
 415 choice
 416         prompt "Endianness selection"
 417         default CPU_BIG_ENDIAN
 418         help
 419           This option selects whether a big endian or little endian kernel will
 420           be built.
 421
 422 config CPU_BIG_ENDIAN
 423         bool "Build big endian kernel"
 424         help
 425           Build a big endian kernel.
 426
 427           If unsure, select this option.
 428
 429 config CPU_LITTLE_ENDIAN
 430         bool "Build little endian kernel"
 431         depends on PPC_BOOK3S_64
 432         select PPC64_BOOT_WRAPPER
 433         help
 434           Build a little endian kernel.
 435
 436           Note that if cross compiling a little endian kernel,
 437           CROSS_COMPILE must point to a toolchain capable of targeting
 438           little endian powerpc.
 439
 440 endchoice
 441
 442 config PPC64_BOOT_WRAPPER
 443         def_bool n
 444         depends on CPU_LITTLE_ENDIAN