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