linux/arch/powerpc/platforms/Kconfig.cputype
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   1config 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
   8menu "Processor support"
   9choice
  10        prompt "Processor Type"
  11        depends on PPC32
  12        help
  13          There are five families of 32 bit PowerPC chips supported.
  14          The most common ones are the desktop and server CPUs (601, 603,
  15          604, 740, 750, 74xx) CPUs from Freescale and IBM, with their
  16          embedded 512x/52xx/82xx/83xx/86xx counterparts.
  17          The other embeeded parts, namely 4xx, 8xx, e200 (55xx) and e500
  18          (85xx) each form a family of their own that is not compatible
  19          with the others.
  20
  21          If unsure, select 52xx/6xx/7xx/74xx/82xx/83xx/86xx.
  22
  23config PPC_BOOK3S_32
  24        bool "512x/52xx/6xx/7xx/74xx/82xx/83xx/86xx"
  25        select PPC_FPU
  26
  27config PPC_85xx
  28        bool "Freescale 85xx"
  29        select E500
  30
  31config PPC_8xx
  32        bool "Freescale 8xx"
  33        select FSL_SOC
  34        select 8xx
  35        select PPC_LIB_RHEAP
  36
  37config 40x
  38        bool "AMCC 40x"
  39        select PPC_DCR_NATIVE
  40        select PPC_UDBG_16550
  41        select 4xx_SOC
  42        select PPC_PCI_CHOICE
  43
  44config 44x
  45        bool "AMCC 44x, 46x or 47x"
  46        select PPC_DCR_NATIVE
  47        select PPC_UDBG_16550
  48        select 4xx_SOC
  49        select PPC_PCI_CHOICE
  50        select PHYS_64BIT
  51
  52config E200
  53        bool "Freescale e200"
  54
  55endchoice
  56
  57choice
  58        prompt "Processor Type"
  59        depends on PPC64
  60        help
  61          There are two families of 64 bit PowerPC chips supported.
  62          The most common ones are the desktop and server CPUs
  63          (POWER3, RS64, POWER4, POWER5, POWER5+, POWER6, ...)
  64
  65          The other are the "embedded" processors compliant with the
  66          "Book 3E" variant of the architecture
  67
  68config PPC_BOOK3S_64
  69        bool "Server processors"
  70        select PPC_FPU
  71        select PPC_HAVE_PMU_SUPPORT
  72        select SYS_SUPPORTS_HUGETLBFS
  73
  74config PPC_BOOK3E_64
  75        bool "Embedded processors"
  76        select PPC_FPU # Make it a choice ?
  77        select PPC_SMP_MUXED_IPI
  78
  79endchoice
  80
  81config PPC_BOOK3S
  82        def_bool y
  83        depends on PPC_BOOK3S_32 || PPC_BOOK3S_64
  84
  85config PPC_BOOK3E
  86        def_bool y
  87        depends on PPC_BOOK3E_64
  88
  89config POWER4_ONLY
  90        bool "Optimize for POWER4"
  91        depends on PPC64 && PPC_BOOK3S
  92        default n
  93        ---help---
  94          Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
  95          The resulting binary will not work on POWER3 or RS64 processors
  96          when compiled with binutils 2.15 or later.
  97
  98config 6xx
  99        def_bool y
 100        depends on PPC32 && PPC_BOOK3S
 101        select PPC_HAVE_PMU_SUPPORT
 102
 103config POWER3
 104        bool
 105        depends on PPC64 && PPC_BOOK3S
 106        default y if !POWER4_ONLY
 107
 108config POWER4
 109        depends on PPC64 && PPC_BOOK3S
 110        def_bool y
 111
 112config PPC_A2
 113        bool
 114        depends on PPC_BOOK3E_64
 115
 116config TUNE_CELL
 117        bool "Optimize for Cell Broadband Engine"
 118        depends on PPC64 && PPC_BOOK3S
 119        help
 120          Cause the compiler to optimize for the PPE of the Cell Broadband
 121          Engine. This will make the code run considerably faster on Cell
 122          but somewhat slower on other machines. This option only changes
 123          the scheduling of instructions, not the selection of instructions
 124          itself, so the resulting kernel will keep running on all other
 125          machines. When building a kernel that is supposed to run only
 126          on Cell, you should also select the POWER4_ONLY option.
 127
 128# this is temp to handle compat with arch=ppc
 129config 8xx
 130        bool
 131
 132config E500
 133        select FSL_EMB_PERFMON
 134        select PPC_FSL_BOOK3E
 135        bool
 136
 137config PPC_E500MC
 138        bool "e500mc Support"
 139        select PPC_FPU
 140        depends on E500
 141
 142config PPC_FPU
 143        bool
 144        default y if PPC64
 145
 146config FSL_EMB_PERFMON
 147        bool "Freescale Embedded Perfmon"
 148        depends on E500 || PPC_83xx
 149        help
 150          This is the Performance Monitor support found on the e500 core
 151          and some e300 cores (c3 and c4).  Select this only if your
 152          core supports the Embedded Performance Monitor APU
 153
 154config FSL_EMB_PERF_EVENT
 155        bool
 156        depends on FSL_EMB_PERFMON && PERF_EVENTS && !PPC_PERF_CTRS
 157        default y
 158
 159config FSL_EMB_PERF_EVENT_E500
 160        bool
 161        depends on FSL_EMB_PERF_EVENT && E500
 162        default y
 163
 164config 4xx
 165        bool
 166        depends on 40x || 44x
 167        default y
 168
 169config BOOKE
 170        bool
 171        depends on E200 || E500 || 44x || PPC_BOOK3E
 172        default y
 173
 174config FSL_BOOKE
 175        bool
 176        depends on (E200 || E500) && PPC32
 177        default y
 178
 179# this is for common code between PPC32 & PPC64 FSL BOOKE
 180config PPC_FSL_BOOK3E
 181        bool
 182        select FSL_EMB_PERFMON
 183        select PPC_SMP_MUXED_IPI
 184        select SYS_SUPPORTS_HUGETLBFS if PHYS_64BIT || PPC64
 185        default y if FSL_BOOKE
 186
 187config PTE_64BIT
 188        bool
 189        depends on 44x || E500 || PPC_86xx
 190        default y if PHYS_64BIT
 191
 192config PHYS_64BIT
 193        bool 'Large physical address support' if E500 || PPC_86xx
 194        depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
 195        ---help---
 196          This option enables kernel support for larger than 32-bit physical
 197          addresses.  This feature may not be available on all cores.
 198
 199          If you have more than 3.5GB of RAM or so, you also need to enable
 200          SWIOTLB under Kernel Options for this to work.  The actual number
 201          is platform-dependent.
 202
 203          If in doubt, say N here.
 204
 205config ALTIVEC
 206        bool "AltiVec Support"
 207        depends on 6xx || POWER4
 208        ---help---
 209          This option enables kernel support for the Altivec extensions to the
 210          PowerPC processor. The kernel currently supports saving and restoring
 211          altivec registers, and turning on the 'altivec enable' bit so user
 212          processes can execute altivec instructions.
 213
 214          This option is only usefully if you have a processor that supports
 215          altivec (G4, otherwise known as 74xx series), but does not have
 216          any affect on a non-altivec cpu (it does, however add code to the
 217          kernel).
 218
 219          If in doubt, say Y here.
 220
 221config VSX
 222        bool "VSX Support"
 223        depends on POWER4 && ALTIVEC && PPC_FPU
 224        ---help---
 225
 226          This option enables kernel support for the Vector Scaler extensions
 227          to the PowerPC processor. The kernel currently supports saving and
 228          restoring VSX registers, and turning on the 'VSX enable' bit so user
 229          processes can execute VSX instructions.
 230
 231          This option is only useful if you have a processor that supports
 232          VSX (P7 and above), but does not have any affect on a non-VSX
 233          CPUs (it does, however add code to the kernel).
 234
 235          If in doubt, say Y here.
 236
 237config PPC_ICSWX
 238        bool "Support for PowerPC icswx coprocessor instruction"
 239        depends on POWER4 || PPC_A2
 240        default n
 241        ---help---
 242
 243          This option enables kernel support for the PowerPC Initiate
 244          Coprocessor Store Word (icswx) coprocessor instruction on POWER7
 245          or newer processors.
 246
 247          This option is only useful if you have a processor that supports
 248          the icswx coprocessor instruction. It does not have any effect
 249          on processors without the icswx coprocessor instruction.
 250
 251          This option slightly increases kernel memory usage.
 252
 253          If in doubt, say N here.
 254
 255config PPC_ICSWX_PID
 256        bool "icswx requires direct PID management"
 257        depends on PPC_ICSWX && POWER4
 258        default y
 259        ---help---
 260          The PID register in server is used explicitly for ICSWX.  In
 261          embedded systems PID managment is done by the system.
 262
 263config PPC_ICSWX_USE_SIGILL
 264        bool "Should a bad CT cause a SIGILL?"
 265        depends on PPC_ICSWX
 266        default n
 267        ---help---
 268          Should a bad CT used for "non-record form ICSWX" cause an
 269          illegal intruction signal or should it be silent as
 270          architected.
 271
 272          If in doubt, say N here.
 273
 274config SPE
 275        bool "SPE Support"
 276        depends on E200 || (E500 && !PPC_E500MC)
 277        default y
 278        ---help---
 279          This option enables kernel support for the Signal Processing
 280          Extensions (SPE) to the PowerPC processor. The kernel currently
 281          supports saving and restoring SPE registers, and turning on the
 282          'spe enable' bit so user processes can execute SPE instructions.
 283
 284          This option is only useful if you have a processor that supports
 285          SPE (e500, otherwise known as 85xx series), but does not have any
 286          effect on a non-spe cpu (it does, however add code to the kernel).
 287
 288          If in doubt, say Y here.
 289
 290config PPC_STD_MMU
 291        def_bool y
 292        depends on PPC_BOOK3S
 293
 294config PPC_STD_MMU_32
 295        def_bool y
 296        depends on PPC_STD_MMU && PPC32
 297
 298config PPC_STD_MMU_64
 299        def_bool y
 300        depends on PPC_STD_MMU && PPC64
 301
 302config PPC_MMU_NOHASH
 303        def_bool y
 304        depends on !PPC_STD_MMU
 305
 306config PPC_BOOK3E_MMU
 307        def_bool y
 308        depends on FSL_BOOKE || PPC_BOOK3E
 309
 310config PPC_MM_SLICES
 311        bool
 312        default y if (!PPC_FSL_BOOK3E && PPC64 && HUGETLB_PAGE) || (PPC_STD_MMU_64 && PPC_64K_PAGES)
 313        default n
 314
 315config VIRT_CPU_ACCOUNTING
 316        bool "Deterministic task and CPU time accounting"
 317        depends on PPC64
 318        default y
 319        help
 320          Select this option to enable more accurate task and CPU time
 321          accounting.  This is done by reading a CPU counter on each
 322          kernel entry and exit and on transitions within the kernel
 323          between system, softirq and hardirq state, so there is a
 324          small performance impact.  This also enables accounting of
 325          stolen time on logically-partitioned systems running on
 326          IBM POWER5-based machines.
 327
 328          If in doubt, say Y here.
 329
 330config PPC_HAVE_PMU_SUPPORT
 331       bool
 332
 333config PPC_PERF_CTRS
 334       def_bool y
 335       depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
 336       help
 337         This enables the powerpc-specific perf_event back-end.
 338
 339config SMP
 340        depends on PPC_BOOK3S || PPC_BOOK3E || FSL_BOOKE || PPC_47x
 341        bool "Symmetric multi-processing support"
 342        ---help---
 343          This enables support for systems with more than one CPU. If you have
 344          a system with only one CPU, say N. If you have a system with more
 345          than one CPU, say Y.  Note that the kernel does not currently
 346          support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 347          since they have inadequate hardware support for multiprocessor
 348          operation.
 349
 350          If you say N here, the kernel will run on single and multiprocessor
 351          machines, but will use only one CPU of a multiprocessor machine. If
 352          you say Y here, the kernel will run on single-processor machines.
 353          On a single-processor machine, the kernel will run faster if you say
 354          N here.
 355
 356          If you don't know what to do here, say N.
 357
 358config NR_CPUS
 359        int "Maximum number of CPUs (2-8192)"
 360        range 2 8192
 361        depends on SMP
 362        default "32" if PPC64
 363        default "4"
 364
 365config NOT_COHERENT_CACHE
 366        bool
 367        depends on 4xx || 8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON
 368        default n if PPC_47x
 369        default y
 370
 371config CHECK_CACHE_COHERENCY
 372        bool
 373
 374endmenu
 375