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 # VMX is pSeries only for now until somebody writes the iSeries
 114 # exception vectors for it
 115 config ALTIVEC
 116         bool "Support for VMX (Altivec) vector unit"
 117         depends on PPC_MULTIPLATFORM
 118         default y
 119
 120 config PPC_SPLPAR
 121         depends on PPC_PSERIES
 122         bool "Support for shared-processor logical partitions"
 123         default n
 124         help
 125           Enabling this option will make the kernel run more efficiently
 126           on logically-partitioned pSeries systems which use shared
 127           processors, that is, which share physical processors between
 128           two or more partitions.
 129
 130 config IBMVIO
 131         depends on PPC_PSERIES || PPC_ISERIES
 132         bool
 133         default y
 134
 135 config U3_DART
 136         bool
 137         depends on PPC_MULTIPLATFORM
 138         default n
 139
 140 config MPIC_BROKEN_U3
 141         bool
 142         depends on PPC_MAPLE
 143         default y
 144
 145 config PPC_PMAC64
 146         bool
 147         depends on PPC_PMAC
 148         default y
 149
 150 config BOOTX_TEXT
 151         bool "Support for early boot text console"
 152         depends PPC_OF
 153         help
 154           Say Y here to see progress messages from the boot firmware in text
 155           mode. Requires an Open Firmware compatible video card.
 156
 157 config POWER4_ONLY
 158         bool "Optimize for POWER4"
 159         default n
 160         ---help---
 161           Cause the compiler to optimize for POWER4 processors. The resulting
 162           binary will not work on POWER3 or RS64 processors when compiled with
 163           binutils 2.15 or later.
 164
 165 config IOMMU_VMERGE
 166         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 167         depends on EXPERIMENTAL
 168         default n
 169         help
 170           Cause IO segments sent to a device for DMA to be merged virtually
 171           by the IOMMU when they happen to have been allocated contiguously.
 172           This doesn't add pressure to the IOMMU allocator. However, some
 173           drivers don't support getting large merged segments coming back
 174           from *_map_sg(). Say Y if you know the drivers you are using are
 175           properly handling this case.
 176
 177 config SMP
 178         bool "Symmetric multi-processing support"
 179         ---help---
 180           This enables support for systems with more than one CPU. If you have
 181           a system with only one CPU, say N. If you have a system with more
 182           than one CPU, say Y.
 183
 184           If you say N here, the kernel will run on single and multiprocessor
 185           machines, but will use only one CPU of a multiprocessor machine. If
 186           you say Y here, the kernel will run on single-processor machines.
 187           On a single-processor machine, the kernel will run faster if you say
 188           N here.
 189
 190           If you don't know what to do here, say Y.
 191
 192 config NR_CPUS
 193         int "Maximum number of CPUs (2-128)"
 194         range 2 128
 195         depends on SMP
 196         default "32"
 197
 198 config HMT
 199         bool "Hardware multithreading"
 200         depends on SMP && PPC_PSERIES && BROKEN
 201         help
 202           This option enables hardware multithreading on RS64 cpus.
 203           pSeries systems p620 and p660 have such a cpu type.
 204
 205 config DISCONTIGMEM
 206         bool "Discontiguous Memory Support"
 207         depends on SMP && PPC_PSERIES
 208
 209 config NUMA
 210         bool "NUMA support"
 211         depends on DISCONTIGMEM
 212
 213 config SCHED_SMT
 214         bool "SMT (Hyperthreading) scheduler support"
 215         depends on SMP
 216         default off
 217         help
 218           SMT scheduler support improves the CPU scheduler's decision making
 219           when dealing with POWER5 cpus at a cost of slightly increased
 220           overhead in some places. If unsure say N here.
 221
 222 config PREEMPT
 223         bool "Preemptible Kernel"
 224         help
 225           This option reduces the latency of the kernel when reacting to
 226           real-time or interactive events by allowing a low priority process to
 227           be preempted even if it is in kernel mode executing a system call.
 228
 229           Say Y here if you are building a kernel for a desktop, embedded
 230           or real-time system.  Say N if you are unsure.
 231
 232 config PREEMPT_BKL
 233         bool "Preempt The Big Kernel Lock"
 234         depends on PREEMPT
 235         default y
 236         help
 237           This option reduces the latency of the kernel by making the
 238           big kernel lock preemptible.
 239
 240           Say Y here if you are building a kernel for a desktop system.
 241           Say N if you are unsure.
 242
 243 config EEH
 244         bool "PCI Extended Error Handling (EEH)" if EMBEDDED
 245         depends on PPC_PSERIES
 246         default y if !EMBEDDED
 247
 248 #
 249 # Use the generic interrupt handling code in kernel/irq/:
 250 #
 251 config GENERIC_HARDIRQS
 252         bool
 253         default y
 254
 255 config MSCHUNKS
 256         bool
 257         depends on PPC_ISERIES
 258         default y
 259
 260
 261 config PPC_RTAS
 262         bool
 263         depends on PPC_PSERIES || PPC_BPA
 264         default y
 265
 266 config RTAS_PROC
 267         bool "Proc interface to RTAS"
 268         depends on PPC_RTAS
 269         default y
 270
 271 config RTAS_FLASH
 272         tristate "Firmware flash interface"
 273         depends on RTAS_PROC
 274
 275 config SCANLOG
 276         tristate "Scanlog dump interface"
 277         depends on RTAS_PROC && PPC_PSERIES
 278
 279 config LPARCFG
 280         tristate "LPAR Configuration Data"
 281         depends on PPC_PSERIES || PPC_ISERIES
 282         help
 283         Provide system capacity information via human readable
 284         <key word>=<value> pairs through a /proc/ppc64/lparcfg interface.
 285
 286 config SECCOMP
 287         bool "Enable seccomp to safely compute untrusted bytecode"
 288         depends on PROC_FS
 289         default y
 290         help
 291           This kernel feature is useful for number crunching applications
 292           that may need to compute untrusted bytecode during their
 293           execution. By using pipes or other transports made available to
 294           the process as file descriptors supporting the read/write
 295           syscalls, it's possible to isolate those applications in
 296           their own address space using seccomp. Once seccomp is
 297           enabled via /proc/<pid>/seccomp, it cannot be disabled
 298           and the task is only allowed to execute a few safe syscalls
 299           defined by each seccomp mode.
 300
 301           If unsure, say Y. Only embedded should say N here.
 302
 303 endmenu
 304
 305 config ISA_DMA_API
 306         bool
 307         default y
 308
 309 menu "General setup"
 310
 311 config ISA
 312         bool
 313         help
 314           Find out whether you have ISA slots on your motherboard.  ISA is the
 315           name of a bus system, i.e. the way the CPU talks to the other stuff
 316           inside your box.  If you have an Apple machine, say N here; if you
 317           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 318           you have an embedded board, consult your board documentation.
 319
 320 config SBUS
 321         bool
 322
 323 config MCA
 324         bool
 325
 326 config EISA
 327         bool
 328
 329 config PCI
 330         bool "support for PCI devices" if (EMBEDDED && PPC_ISERIES)
 331         default y
 332         help
 333           Find out whether your system includes a PCI bus. PCI is the name of
 334           a bus system, i.e. the way the CPU talks to the other stuff inside
 335           your box.  If you say Y here, the kernel will include drivers and
 336           infrastructure code to support PCI bus devices.
 337
 338 config PCI_DOMAINS
 339         bool
 340         default PCI
 341
 342 source "fs/Kconfig.binfmt"
 343
 344 source "drivers/pci/Kconfig"
 345
 346 config HOTPLUG_CPU
 347         bool "Support for hot-pluggable CPUs"
 348         depends on SMP && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 349         select HOTPLUG
 350         ---help---
 351           Say Y here to be able to turn CPUs off and on.
 352
 353           Say N if you are unsure.
 354
 355 source "drivers/pcmcia/Kconfig"
 356
 357 source "drivers/pci/hotplug/Kconfig"
 358
 359 config PROC_DEVICETREE
 360         bool "Support for Open Firmware device tree in /proc"
 361         depends on !PPC_ISERIES
 362         help
 363           This option adds a device-tree directory under /proc which contains
 364           an image of the device tree that the kernel copies from Open
 365           Firmware. If unsure, say Y here.
 366
 367 config CMDLINE_BOOL
 368         bool "Default bootloader kernel arguments"
 369         depends on !PPC_ISERIES
 370
 371 config CMDLINE
 372         string "Initial kernel command string"
 373         depends on CMDLINE_BOOL
 374         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 375         help
 376           On some platforms, there is currently no way for the boot loader to
 377           pass arguments to the kernel. For these platforms, you can supply
 378           some command-line options at build time by entering them here.  In
 379           most cases you will need to specify the root device here.
 380
 381 endmenu
 382
 383 source "drivers/Kconfig"
 384
 385 source "fs/Kconfig"
 386
 387 menu "iSeries device drivers"
 388         depends on PPC_ISERIES
 389
 390 config VIOCONS
 391         tristate "iSeries Virtual Console Support"
 392
 393 config VIODASD
 394         tristate "iSeries Virtual I/O disk support"
 395         help
 396           If you are running on an iSeries system and you want to use
 397           virtual disks created and managed by OS/400, say Y.
 398
 399 config VIOCD
 400         tristate "iSeries Virtual I/O CD support"
 401         help
 402           If you are running Linux on an IBM iSeries system and you want to
 403           read a CD drive owned by OS/400, say Y here.
 404
 405 config VIOTAPE
 406         tristate "iSeries Virtual Tape Support"
 407         help
 408           If you are running Linux on an iSeries system and you want Linux
 409           to read and/or write a tape drive owned by OS/400, say Y here.
 410
 411 endmenu
 412
 413 config VIOPATH
 414         bool
 415         depends on VIOCONS || VIODASD || VIOCD || VIOTAPE || VETH
 416         default y
 417
 418 source "arch/ppc64/oprofile/Kconfig"
 419
 420 source "arch/ppc64/Kconfig.debug"
 421
 422 source "security/Kconfig"
 423
 424 config KEYS_COMPAT
 425         bool
 426         depends on COMPAT && KEYS
 427         default y
 428
 429 source "crypto/Kconfig"
 430
 431 source "lib/Kconfig"