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