arch/powerpc/platforms/Kconfig.cputype

   1 config PPC64
   2         bool "64-bit kernel"
   3         default n
   4         select HAVE_VIRT_CPU_ACCOUNTING
   5         select ZLIB_DEFLATE
   6         help
   7           This option selects whether a 32-bit or a 64-bit kernel
   8           will be built.
   9
  10 menu "Processor support"
  11 choice
  12         prompt "Processor Type"
  13         depends on PPC32
  14         help
  15           There are five families of 32 bit PowerPC chips supported.
  16           The most common ones are the desktop and server CPUs (601, 603,
  17           604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
  18           embedded 512x/52xx/82xx/83xx/86xx counterparts.
  19           The other embedded parts, namely 4xx, 8xx, e200 (55xx) and e500
  20           (85xx) each form a family of their own that is not compatible
  21           with the others.
  22
  23           If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
  24
  25 config PPC_BOOK3S_32
  26         bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
  27         select PPC_FPU
  28
  29 config PPC_85xx
  30         bool "Freescale 85xx"
  31         select E500
  32
  33 config PPC_8xx
  34         bool "Freescale 8xx"
  35         select FSL_SOC
  36         select 8xx
  37         select PPC_LIB_RHEAP
  38
  39 config 40x
  40         bool "AMCC 40x"
  41         select PPC_DCR_NATIVE
  42         select PPC_UDBG_16550
  43         select 4xx_SOC
  44         select PPC_PCI_CHOICE
  45
  46 config 44x
  47         bool "AMCC 44x, 46x or 47x"
  48         select PPC_DCR_NATIVE
  49         select PPC_UDBG_16550
  50         select 4xx_SOC
  51         select PPC_PCI_CHOICE
  52         select PHYS_64BIT
  53
  54 config E200
  55         bool "Freescale e200"
  56
  57 endchoice
  58
  59 choice
  60         prompt "Processor Type"
  61         depends on PPC64
  62         help
  63           There are two families of 64 bit PowerPC chips supported.
  64           The most common ones are the desktop and server CPUs
  65           (POWER4, POWER5, 970, POWER5+, POWER6, POWER7, POWER8 ...)
  66
  67           The other are the "embedded" processors compliant with the
  68           "Book 3E" variant of the architecture
  69
  70 config PPC_BOOK3S_64
  71         bool "Server processors"
  72         select PPC_FPU
  73         select PPC_HAVE_PMU_SUPPORT
  74         select SYS_SUPPORTS_HUGETLBFS
  75         select HAVE_ARCH_TRANSPARENT_HUGEPAGE if PPC_64K_PAGES
  76         select ARCH_SUPPORTS_NUMA_BALANCING
  77         select IRQ_WORK
  78
  79 config PPC_BOOK3E_64
  80         bool "Embedded processors"
  81         select PPC_FPU # Make it a choice ?
  82         select PPC_SMP_MUXED_IPI
  83         select PPC_DOORBELL
  84
  85 endchoice
  86
  87 choice
  88         prompt "CPU selection"
  89         depends on PPC64
  90         default GENERIC_CPU
  91         help
  92           This will create a kernel which is optimised for a particular CPU.
  93           The resulting kernel may not run on other CPUs, so use this with care.
  94
  95           If unsure, select Generic.
  96
  97 config GENERIC_CPU
  98         bool "Generic"
  99         depends on !CPU_LITTLE_ENDIAN
 100
 101 config CELL_CPU
 102         bool "Cell Broadband Engine"
 103         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 104
 105 config POWER4_CPU
 106         bool "POWER4"
 107         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 108
 109 config POWER5_CPU
 110         bool "POWER5"
 111         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 112
 113 config POWER6_CPU
 114         bool "POWER6"
 115         depends on PPC_BOOK3S_64 && !CPU_LITTLE_ENDIAN
 116
 117 config POWER7_CPU
 118         bool "POWER7"
 119         depends on PPC_BOOK3S_64
 120         select ARCH_HAS_FAST_MULTIPLIER
 121
 122 config POWER8_CPU
 123         bool "POWER8"
 124         depends on PPC_BOOK3S_64
 125         select ARCH_HAS_FAST_MULTIPLIER
 126
 127 config E5500_CPU
 128         bool "Freescale e5500"
 129         depends on E500
 130
 131 config E6500_CPU
 132         bool "Freescale e6500"
 133         depends on E500
 134
 135 endchoice
 136
 137 config PPC_BOOK3S
 138         def_bool y
 139         depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
 140
 141 config PPC_BOOK3E
 142         def_bool y
 143         depends on PPC_BOOK3E_64
 144
 145 config 6xx
 146         def_bool y
 147         depends on PPC32 && PPC_BOOK3S
 148         select PPC_HAVE_PMU_SUPPORT
 149
 150 config TUNE_CELL
 151         bool "Optimize for Cell Broadband Engine"
 152         depends on PPC64 && PPC_BOOK3S
 153         help
 154           Cause the compiler to optimize for the PPE of the Cell Broadband
 155           Engine. This will make the code run considerably faster on Cell
 156           but somewhat slower on other machines. This option only changes
 157           the scheduling of instructions, not the selection of instructions
 158           itself, so the resulting kernel will keep running on all other
 159           machines.
 160
 161 # this is temp to handle compat with arch=ppc
 162 config 8xx
 163         bool
 164
 165 config E500
 166         select FSL_EMB_PERFMON
 167         select PPC_FSL_BOOK3E
 168         bool
 169
 170 config PPC_E500MC
 171         bool "e500mc Support"
 172         select PPC_FPU
 173         select COMMON_CLK
 174         depends on E500
 175         help
 176           This must be enabled for running on e500mc (and derivatives
 177           such as e5500/e6500), and must be disabled for running on
 178           e500v1 or e500v2.
 179
 180 config PPC_FPU
 181         bool
 182         default y if PPC64
 183
 184 config FSL_EMB_PERFMON
 185         bool "Freescale Embedded Perfmon"
 186         depends on E500 || PPC_83xx
 187         help
 188           This is the Performance Monitor support found on the e500 core
 189           and some e300 cores (c3 and c4).  Select this only if your
 190           core supports the Embedded Performance Monitor APU
 191
 192 config FSL_EMB_PERF_EVENT
 193         bool
 194         depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
 195         default y
 196
 197 config FSL_EMB_PERF_EVENT_E500
 198         bool
 199         depends on FSL_EMB_PERF_EVENT && E500
 200         default y
 201
 202 config 4xx
 203         bool
 204         depends on 40x || 44x
 205         default y
 206
 207 config BOOKE
 208         bool
 209         depends on E200 || E500 || 44x || PPC_BOOK3E
 210         default y
 211
 212 config FSL_BOOKE
 213         bool
 214         depends on (E200 || E500) && PPC32
 215         default y
 216
 217 # this is for common code between PPC32 & PPC64 FSL BOOKE
 218 config PPC_FSL_BOOK3E
 219         bool
 220         select FSL_EMB_PERFMON
 221         select PPC_SMP_MUXED_IPI
 222         select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
 223         select PPC_DOORBELL
 224         default y if FSL_BOOKE
 225
 226 config PTE_64BIT
 227         bool
 228         depends on 44x || E500 || PPC_86xx
 229         default y if PHYS_64BIT
 230
 231 config PHYS_64BIT
 232         bool 'Large physical address support' if E500 || PPC_86xx
 233         depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
 234         ---help---
 235           This option enables kernel support for larger than 32-bit physical
 236           addresses.  This feature may not be available on all cores.
 237
 238           If you have more than 3.5GB of RAM or so, you also need to enable
 239           SWIOTLB under Kernel Options for this to work.  The actual number
 240           is platform-dependent.
 241
 242           If in doubt, say N here.
 243
 244 config ALTIVEC
 245         bool "AltiVec Support"
 246         depends on 6xx || PPC_BOOK3S_64 || (PPC_E500MC && PPC64)
 247         ---help---
 248           This option enables kernel support for the Altivec extensions to the
 249           PowerPC processor. The kernel currently supports saving and restoring
 250           altivec registers, and turning on the 'altivec enable' bit so user
 251           processes can execute altivec instructions.
 252
 253           This option is only usefully if you have a processor that supports
 254           altivec (G4, otherwise known as 74xx series), but does not have
 255           any affect on a non-altivec cpu (it does, however add code to the
 256           kernel).
 257
 258           If in doubt, say Y here.
 259
 260 config VSX
 261         bool "VSX Support"
 262         depends on PPC_BOOK3S_64 && ALTIVEC && PPC_FPU
 263         ---help---
 264
 265           This option enables kernel support for the Vector Scaler extensions
 266           to the PowerPC processor. The kernel currently supports saving and
 267           restoring VSX registers, and turning on the 'VSX enable' bit so user
 268           processes can execute VSX instructions.
 269
 270           This option is only useful if you have a processor that supports
 271           VSX (P7 and above), but does not have any affect on a non-VSX
 272           CPUs (it does, however add code to the kernel).
 273
 274           If in doubt, say Y here.
 275
 276 config PPC_ICSWX
 277         bool "Support for PowerPC icswx coprocessor instruction"
 278         depends on PPC_BOOK3S_64
 279         default n
 280         ---help---
 281
 282           This option enables kernel support for the PowerPC Initiate
 283           Coprocessor Store Word (icswx) coprocessor instruction on POWER7
 284           or newer processors.
 285
 286           This option is only useful if you have a processor that supports
 287           the icswx coprocessor instruction. It does not have any effect
 288           on processors without the icswx coprocessor instruction.
 289
 290           This option slightly increases kernel memory usage.
 291
 292           If in doubt, say N here.
 293
 294 config PPC_ICSWX_PID
 295         bool "icswx requires direct PID management"
 296         depends on PPC_ICSWX
 297         default y
 298         ---help---
 299           The PID register in server is used explicitly for ICSWX.  In
 300           embedded systems PID management is done by the system.
 301
 302 config PPC_ICSWX_USE_SIGILL
 303         bool "Should a bad CT cause a SIGILL?"
 304         depends on PPC_ICSWX
 305         default n
 306         ---help---
 307           Should a bad CT used for "non-record form ICSWX" cause an
 308           illegal instruction signal or should it be silent as
 309           architected.
 310
 311           If in doubt, say N here.
 312
 313 config SPE_POSSIBLE
 314         def_bool y
 315         depends on E200 || (E500 && !PPC_E500MC)
 316
 317 config SPE
 318         bool "SPE Support"
 319         depends on SPE_POSSIBLE
 320         default y
 321         ---help---
 322           This option enables kernel support for the Signal Processing
 323           Extensions (SPE) to the PowerPC processor. The kernel currently
 324           supports saving and restoring SPE registers, and turning on the
 325           'spe enable' bit so user processes can execute SPE instructions.
 326
 327           This option is only useful if you have a processor that supports
 328           SPE (e500, otherwise known as 85xx series), but does not have any
 329           effect on a non-spe cpu (it does, however add code to the kernel).
 330
 331           If in doubt, say Y here.
 332
 333 config PPC_STD_MMU
 334         def_bool y
 335         depends on PPC_BOOK3S
 336
 337 config PPC_STD_MMU_32
 338         def_bool y
 339         depends on PPC_STD_MMU && PPC32
 340
 341 config PPC_STD_MMU_64
 342         def_bool y
 343         depends on PPC_STD_MMU && PPC64
 344
 345 config PPC_MMU_NOHASH
 346         def_bool y
 347         depends on !PPC_STD_MMU
 348
 349 config PPC_BOOK3E_MMU
 350         def_bool y
 351         depends on FSL_BOOKE || PPC_BOOK3E
 352
 353 config PPC_MM_SLICES
 354         bool
 355         default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
 356         default n
 357
 358 config PPC_HAVE_PMU_SUPPORT
 359        bool
 360
 361 config PPC_PERF_CTRS
 362        def_bool y
 363        depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
 364        help
 365          This enables the powerpc-specific perf_event back-end.
 366
 367 config SMP
 368         depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
 369         bool "Symmetric multi-processing support"
 370         ---help---
 371           This enables support for systems with more than one CPU. If you have
 372           a system with only one CPU, say N. If you have a system with more
 373           than one CPU, say Y.  Note that the kernel does not currently
 374           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 375           since they have inadequate hardware support for multiprocessor
 376           operation.
 377
 378           If you say N here, the kernel will run on single and multiprocessor
 379           machines, but will use only one CPU of a multiprocessor machine. If
 380           you say Y here, the kernel will run on single-processor machines.
 381           On a single-processor machine, the kernel will run faster if you say
 382           N here.
 383
 384           If you don't know what to do here, say N.
 385
 386 config NR_CPUS
 387         int "Maximum number of CPUs (2-8192)"
 388         range 2 8192
 389         depends on SMP
 390         default "32" if PPC64
 391         default "4"
 392
 393 config NOT_COHERENT_CACHE
 394         bool
 395         depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
 396         default n if PPC_47x
 397         default y
 398
 399 config CHECK_CACHE_COHERENCY
 400         bool
 401
 402 config PPC_DOORBELL
 403         bool
 404         default n
 405
 406 endmenu
 407
 408 config VDSO32
 409         def_bool y
 410         depends on PPC32 || CPU_BIG_ENDIAN
 411         help
 412           This symbol controls whether we build the 32-bit VDSO. We obviously
 413           want to do that if we're building a 32-bit kernel. If we're building
 414           a 64-bit kernel then we only want a 32-bit VDSO if we're building for
 415           big endian. That is because the only little endian configuration we
 416           support is ppc64le which is 64-bit only.
 417
 418 choice
 419         prompt "Endianness selection"
 420         default CPU_BIG_ENDIAN
 421         help
 422           This option selects whether a big endian or little endian kernel will
 423           be built.
 424
 425 config CPU_BIG_ENDIAN
 426         bool "Build big endian kernel"
 427         help
 428           Build a big endian kernel.
 429
 430           If unsure, select this option.
 431
 432 config CPU_LITTLE_ENDIAN
 433         bool "Build little endian kernel"
 434         depends on PPC_BOOK3S_64
 435         select PPC64_BOOT_WRAPPER
 436         help
 437           Build a little endian kernel.
 438
 439           Note that if cross compiling a little endian kernel,
 440           CROSS_COMPILE must point to a toolchain capable of targeting
 441           little endian powerpc.
 442
 443 endchoice
 444
 445 config PPC64_BOOT_WRAPPER
 446         def_bool n
 447         depends on CPU_LITTLE_ENDIAN