arch/ppc64/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 config 64BIT
   7         def_bool y
   8
   9 config MMU
  10         bool
  11         default y
  12
  13 config PPC_STD_MMU
  14         def_bool y
  15
  16 config UID16
  17         bool
  18
  19 config RWSEM_GENERIC_SPINLOCK
  20         bool
  21
  22 config RWSEM_XCHGADD_ALGORITHM
  23         bool
  24         default y
  25
  26 config GENERIC_CALIBRATE_DELAY
  27         bool
  28         default y
  29
  30 config GENERIC_ISA_DMA
  31         bool
  32         default y
  33
  34 config EARLY_PRINTK
  35         bool
  36         default y
  37
  38 config COMPAT
  39         bool
  40         default y
  41
  42 config SCHED_NO_NO_OMIT_FRAME_POINTER
  43         bool
  44         default y
  45
  46 config ARCH_MAY_HAVE_PC_FDC
  47         bool
  48         default y
  49
  50 config PPC_STD_MMU
  51         bool
  52         default y
  53
  54 # We optimistically allocate largepages from the VM, so make the limit
  55 # large enough (16MB). This badly named config option is actually
  56 # max order + 1
  57 config FORCE_MAX_ZONEORDER
  58         int
  59         default "13"
  60
  61 source "init/Kconfig"
  62
  63 config SYSVIPC_COMPAT
  64         bool
  65         depends on COMPAT && SYSVIPC
  66         default y
  67
  68 menu "Platform support"
  69
  70 choice
  71         prompt "Platform Type"
  72         default PPC_MULTIPLATFORM
  73
  74 config PPC_ISERIES
  75         bool "IBM Legacy iSeries"
  76
  77 config PPC_MULTIPLATFORM
  78         bool "Generic"
  79
  80 endchoice
  81
  82 config PPC_PSERIES
  83         depends on PPC_MULTIPLATFORM
  84         bool "  IBM pSeries & new iSeries"
  85         default y
  86
  87 config PPC_BPA
  88         bool "  Broadband Processor Architecture"
  89         depends on PPC_MULTIPLATFORM
  90
  91 config PPC_PMAC
  92         depends on PPC_MULTIPLATFORM
  93         bool "  Apple G5 based machines"
  94         default y
  95         select U3_DART
  96         select GENERIC_TBSYNC
  97
  98 config PPC_MAPLE
  99         depends on PPC_MULTIPLATFORM
 100         bool "  Maple 970FX Evaluation Board"
 101         select U3_DART
 102         select MPIC_BROKEN_U3
 103         select GENERIC_TBSYNC
 104         default n
 105         help
 106           This option enables support for the Maple 970FX Evaluation Board.
 107           For more informations, refer to <http://www.970eval.com>
 108
 109 config PPC
 110         bool
 111         default y
 112
 113 config PPC64
 114         bool
 115         default y
 116
 117 config PPC_OF
 118         depends on PPC_MULTIPLATFORM
 119         bool
 120         default y
 121
 122 config XICS
 123         depends on PPC_PSERIES
 124         bool
 125         default y
 126
 127 config MPIC
 128         depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE
 129         bool
 130         default y
 131
 132 config PPC_I8259
 133         depends on PPC_PSERIES
 134         bool
 135         default y
 136
 137 config BPA_IIC
 138         depends on PPC_BPA
 139         bool
 140         default y
 141
 142 # VMX is pSeries only for now until somebody writes the iSeries
 143 # exception vectors for it
 144 config ALTIVEC
 145         bool "Support for VMX (Altivec) vector unit"
 146         depends on PPC_MULTIPLATFORM
 147         default y
 148
 149 config PPC_SPLPAR
 150         depends on PPC_PSERIES
 151         bool "Support for shared-processor logical partitions"
 152         default n
 153         help
 154           Enabling this option will make the kernel run more efficiently
 155           on logically-partitioned pSeries systems which use shared
 156           processors, that is, which share physical processors between
 157           two or more partitions.
 158
 159 config KEXEC
 160         bool "kexec system call (EXPERIMENTAL)"
 161         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 162         help
 163           kexec is a system call that implements the ability to shutdown your
 164           current kernel, and to start another kernel.  It is like a reboot
 165           but it is indepedent of the system firmware.  And like a reboot
 166           you can start any kernel with it, not just Linux.
 167
 168           The name comes from the similiarity to the exec system call.
 169
 170           It is an ongoing process to be certain the hardware in a machine
 171           is properly shutdown, so do not be surprised if this code does not
 172           initially work for you.  It may help to enable device hotplugging
 173           support.  As of this writing the exact hardware interface is
 174           strongly in flux, so no good recommendation can be made.
 175
 176 config IBMVIO
 177         depends on PPC_PSERIES || PPC_ISERIES
 178         bool
 179         default y
 180
 181 config U3_DART
 182         bool
 183         depends on PPC_MULTIPLATFORM
 184         default n
 185
 186 config MPIC_BROKEN_U3
 187         bool
 188         depends on PPC_MAPLE
 189         default y
 190
 191 config GENERIC_TBSYNC
 192         def_bool n
 193
 194 config PPC_PMAC64
 195         bool
 196         depends on PPC_PMAC
 197         default y
 198
 199 config BOOTX_TEXT
 200         bool "Support for early boot text console"
 201         depends PPC_OF
 202         help
 203           Say Y here to see progress messages from the boot firmware in text
 204           mode. Requires an Open Firmware compatible video card.
 205
 206 config POWER4
 207         def_bool y
 208
 209 config PPC_FPU
 210         def_bool y
 211
 212 config POWER4_ONLY
 213         bool "Optimize for POWER4"
 214         default n
 215         ---help---
 216           Cause the compiler to optimize for POWER4 processors. The resulting
 217           binary will not work on POWER3 or RS64 processors when compiled with
 218           binutils 2.15 or later.
 219
 220 config IOMMU_VMERGE
 221         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 222         depends on EXPERIMENTAL
 223         default n
 224         help
 225           Cause IO segments sent to a device for DMA to be merged virtually
 226           by the IOMMU when they happen to have been allocated contiguously.
 227           This doesn't add pressure to the IOMMU allocator. However, some
 228           drivers don't support getting large merged segments coming back
 229           from *_map_sg(). Say Y if you know the drivers you are using are
 230           properly handling this case.
 231
 232 config SMP
 233         bool "Symmetric multi-processing support"
 234         ---help---
 235           This enables support for systems with more than one CPU. If you have
 236           a system with only one CPU, say N. If you have a system with more
 237           than one CPU, say Y.
 238
 239           If you say N here, the kernel will run on single and multiprocessor
 240           machines, but will use only one CPU of a multiprocessor machine. If
 241           you say Y here, the kernel will run on single-processor machines.
 242           On a single-processor machine, the kernel will run faster if you say
 243           N here.
 244
 245           If you don't know what to do here, say Y.
 246
 247 config NR_CPUS
 248         int "Maximum number of CPUs (2-128)"
 249         range 2 128
 250         depends on SMP
 251         default "32"
 252
 253 config HMT
 254         bool "Hardware multithreading"
 255         depends on SMP && PPC_PSERIES && BROKEN
 256         help
 257           This option enables hardware multithreading on RS64 cpus.
 258           pSeries systems p620 and p660 have such a cpu type.
 259
 260 config NUMA
 261         bool "NUMA support"
 262         default y if SMP && PPC_PSERIES
 263
 264 config ARCH_SELECT_MEMORY_MODEL
 265         def_bool y
 266
 267 config ARCH_FLATMEM_ENABLE
 268        def_bool y
 269        depends on !NUMA
 270
 271 config ARCH_DISCONTIGMEM_ENABLE
 272         def_bool y
 273         depends on SMP && PPC_PSERIES
 274
 275 config ARCH_DISCONTIGMEM_DEFAULT
 276         def_bool y
 277         depends on ARCH_DISCONTIGMEM_ENABLE
 278
 279 config ARCH_SPARSEMEM_ENABLE
 280         def_bool y
 281         depends on ARCH_DISCONTIGMEM_ENABLE
 282
 283 source "mm/Kconfig"
 284
 285 config HAVE_ARCH_EARLY_PFN_TO_NID
 286         def_bool y
 287         depends on NEED_MULTIPLE_NODES
 288
 289 # Some NUMA nodes have memory ranges that span
 290 # other nodes.  Even though a pfn is valid and
 291 # between a node's start and end pfns, it may not
 292 # reside on that node.
 293 #
 294 # This is a relatively temporary hack that should
 295 # be able to go away when sparsemem is fully in
 296 # place
 297 config NODES_SPAN_OTHER_NODES
 298         def_bool y
 299         depends on NEED_MULTIPLE_NODES
 300
 301 config PPC_64K_PAGES
 302         bool "64k page size"
 303         help
 304           This option changes the kernel logical page size to 64k. On machines
 305           without processor support for 64k pages, the kernel will simulate
 306           them by loading each individual 4k page on demand transparently,
 307           while on hardware with such support, it will be used to map
 308           normal application pages.
 309
 310 config SCHED_SMT
 311         bool "SMT (Hyperthreading) scheduler support"
 312         depends on SMP
 313         default off
 314         help
 315           SMT scheduler support improves the CPU scheduler's decision making
 316           when dealing with POWER5 cpus at a cost of slightly increased
 317           overhead in some places. If unsure say N here.
 318
 319 source "kernel/Kconfig.preempt"
 320 source kernel/Kconfig.hz
 321
 322 config EEH
 323         bool "PCI Extended Error Handling (EEH)" if EMBEDDED
 324         depends on PPC_PSERIES
 325         default y if !EMBEDDED
 326
 327 #
 328 # Use the generic interrupt handling code in kernel/irq/:
 329 #
 330 config GENERIC_HARDIRQS
 331         bool
 332         default y
 333
 334 config PPC_RTAS
 335         bool
 336         depends on PPC_PSERIES || PPC_BPA
 337         default y
 338
 339 config RTAS_ERROR_LOGGING
 340         bool
 341         depends on PPC_RTAS
 342         default y
 343
 344 config RTAS_PROC
 345         bool "Proc interface to RTAS"
 346         depends on PPC_RTAS
 347         default y
 348
 349 config RTAS_FLASH
 350         tristate "Firmware flash interface"
 351         depends on RTAS_PROC
 352
 353 config SCANLOG
 354         tristate "Scanlog dump interface"
 355         depends on RTAS_PROC && PPC_PSERIES
 356
 357 config LPARCFG
 358         tristate "LPAR Configuration Data"
 359         depends on PPC_PSERIES || PPC_ISERIES
 360         help
 361         Provide system capacity information via human readable
 362         <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
 363
 364 config SECCOMP
 365         bool "Enable seccomp to safely compute untrusted bytecode"
 366         depends on PROC_FS
 367         default y
 368         help
 369           This kernel feature is useful for number crunching applications
 370           that may need to compute untrusted bytecode during their
 371           execution. By using pipes or other transports made available to
 372           the process as file descriptors supporting the read/write
 373           syscalls, it's possible to isolate those applications in
 374           their own address space using seccomp. Once seccomp is
 375           enabled via /proc/<pid>/seccomp, it cannot be disabled
 376           and the task is only allowed to execute a few safe syscalls
 377           defined by each seccomp mode.
 378
 379           If unsure, say Y. Only embedded should say N here.
 380
 381 source "fs/Kconfig.binfmt"
 382
 383 config HOTPLUG_CPU
 384         bool "Support for hot-pluggable CPUs"
 385         depends on SMP && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 386         select HOTPLUG
 387         ---help---
 388           Say Y here to be able to turn CPUs off and on.
 389
 390           Say N if you are unsure.
 391
 392 config PROC_DEVICETREE
 393         bool "Support for Open Firmware device tree in /proc"
 394         help
 395           This option adds a device-tree directory under /proc which contains
 396           an image of the device tree that the kernel copies from Open
 397           Firmware. If unsure, say Y here.
 398
 399 config CMDLINE_BOOL
 400         bool "Default bootloader kernel arguments"
 401         depends on !PPC_ISERIES
 402
 403 config CMDLINE
 404         string "Initial kernel command string"
 405         depends on CMDLINE_BOOL
 406         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 407         help
 408           On some platforms, there is currently no way for the boot loader to
 409           pass arguments to the kernel. For these platforms, you can supply
 410           some command-line options at build time by entering them here.  In
 411           most cases you will need to specify the root device here.
 412
 413 endmenu
 414
 415 config ISA_DMA_API
 416         bool
 417         default y
 418
 419 menu "Bus Options"
 420
 421 config ISA
 422         bool
 423         help
 424           Find out whether you have ISA slots on your motherboard.  ISA is the
 425           name of a bus system, i.e. the way the CPU talks to the other stuff
 426           inside your box.  If you have an Apple machine, say N here; if you
 427           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 428           you have an embedded board, consult your board documentation.
 429
 430 config SBUS
 431         bool
 432
 433 config MCA
 434         bool
 435
 436 config EISA
 437         bool
 438
 439 config PCI
 440         bool "support for PCI devices" if (EMBEDDED && PPC_ISERIES)
 441         default y
 442         help
 443           Find out whether your system includes a PCI bus. PCI is the name of
 444           a bus system, i.e. the way the CPU talks to the other stuff inside
 445           your box.  If you say Y here, the kernel will include drivers and
 446           infrastructure code to support PCI bus devices.
 447
 448 config PCI_DOMAINS
 449         bool
 450         default PCI
 451
 452 source "drivers/pci/Kconfig"
 453
 454 source "drivers/pcmcia/Kconfig"
 455
 456 source "drivers/pci/hotplug/Kconfig"
 457
 458 endmenu
 459
 460 source "net/Kconfig"
 461
 462 source "drivers/Kconfig"
 463
 464 source "fs/Kconfig"
 465
 466 menu "iSeries device drivers"
 467         depends on PPC_ISERIES
 468
 469 config VIOCONS
 470         tristate "iSeries Virtual Console Support"
 471
 472 config VIODASD
 473         tristate "iSeries Virtual I/O disk support"
 474         help
 475           If you are running on an iSeries system and you want to use
 476           virtual disks created and managed by OS/400, say Y.
 477
 478 config VIOCD
 479         tristate "iSeries Virtual I/O CD support"
 480         help
 481           If you are running Linux on an IBM iSeries system and you want to
 482           read a CD drive owned by OS/400, say Y here.
 483
 484 config VIOTAPE
 485         tristate "iSeries Virtual Tape Support"
 486         help
 487           If you are running Linux on an iSeries system and you want Linux
 488           to read and/or write a tape drive owned by OS/400, say Y here.
 489
 490 endmenu
 491
 492 config VIOPATH
 493         bool
 494         depends on VIOCONS || VIODASD || VIOCD || VIOTAPE || VETH
 495         default y
 496
 497 source "arch/powerpc/oprofile/Kconfig"
 498
 499 source "arch/ppc64/Kconfig.debug"
 500
 501 source "security/Kconfig"
 502
 503 config KEYS_COMPAT
 504         bool
 505         depends on COMPAT && KEYS
 506         default y
 507
 508 source "crypto/Kconfig"
 509
 510 source "lib/Kconfig"