arch/powerpc/Kconfig

   1 # For a description of the syntax of this configuration file,
   2 # see Documentation/kbuild/kconfig-language.txt.
   3 #
   4
   5 mainmenu "Linux/PowerPC Kernel Configuration"
   6
   7 config PPC64
   8         bool "64-bit kernel"
   9         default n
  10         help
  11           This option selects whether a 32-bit or a 64-bit kernel
  12           will be built.
  13
  14 config PPC_PM_NEEDS_RTC_LIB
  15         bool
  16         select RTC_LIB
  17         default y if PM
  18
  19 config PPC32
  20         bool
  21         default y if !PPC64
  22
  23 config 64BIT
  24         bool
  25         default y if PPC64
  26
  27 config PPC_MERGE
  28         def_bool y
  29
  30 config MMU
  31         bool
  32         default y
  33
  34 config GENERIC_HARDIRQS
  35         bool
  36         default y
  37
  38 config IRQ_PER_CPU
  39         bool
  40         default y
  41
  42 config RWSEM_GENERIC_SPINLOCK
  43         bool
  44
  45 config RWSEM_XCHGADD_ALGORITHM
  46         bool
  47         default y
  48
  49 config ARCH_HAS_ILOG2_U32
  50         bool
  51         default y
  52
  53 config ARCH_HAS_ILOG2_U64
  54         bool
  55         default y if 64BIT
  56
  57 config GENERIC_HWEIGHT
  58         bool
  59         default y
  60
  61 config GENERIC_CALIBRATE_DELAY
  62         bool
  63         default y
  64
  65 config GENERIC_FIND_NEXT_BIT
  66         bool
  67         default y
  68
  69 config PPC
  70         bool
  71         default y
  72
  73 config EARLY_PRINTK
  74         bool
  75         default y
  76
  77 config COMPAT
  78         bool
  79         default y if PPC64
  80
  81 config SYSVIPC_COMPAT
  82         bool
  83         depends on COMPAT && SYSVIPC
  84         default y
  85
  86 # All PPC32s use generic nvram driver through ppc_md
  87 config GENERIC_NVRAM
  88         bool
  89         default y if PPC32
  90
  91 config SCHED_NO_NO_OMIT_FRAME_POINTER
  92         bool
  93         default y
  94
  95 config ARCH_MAY_HAVE_PC_FDC
  96         bool
  97         default !PPC_PSERIES || PCI
  98
  99 config PPC_OF
 100         def_bool y
 101
 102 config PPC_UDBG_16550
 103         bool
 104         default n
 105
 106 config GENERIC_TBSYNC
 107         bool
 108         default y if PPC32 && SMP
 109         default n
 110
 111 config AUDIT_ARCH
 112         bool
 113         default y
 114
 115 config GENERIC_BUG
 116         bool
 117         default y
 118         depends on BUG
 119
 120 config DEFAULT_UIMAGE
 121         bool
 122         help
 123           Used to allow a board to specify it wants a uImage built by default
 124         default n
 125
 126 menu "Processor support"
 127 choice
 128         prompt "Processor Type"
 129         depends on PPC32
 130         default 6xx
 131
 132 config CLASSIC32
 133         bool "52xx/6xx/7xx/74xx"
 134         select PPC_FPU
 135         select 6xx
 136         help
 137           There are four families of PowerPC chips supported.  The more common
 138           types (601, 603, 604, 740, 750, 7400), the Motorola embedded
 139           versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
 140           embedded versions (403 and 405) and the high end 64 bit Power
 141           processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
 142
 143           This option is the catch-all for 6xx types, including some of the
 144           embedded versions.  Unless there is see an option for the specific
 145           chip family you are using, you want this option.
 146
 147           You do not want this if you are building a kernel for a 64 bit
 148           IBM RS/6000 or an Apple G5, choose 6xx.
 149
 150           If unsure, select this option
 151
 152           Note that the kernel runs in 32-bit mode even on 64-bit chips.
 153
 154 config PPC_82xx
 155         bool "Freescale 82xx"
 156         select 6xx
 157         select PPC_FPU
 158
 159 config PPC_83xx
 160         bool "Freescale 83xx"
 161         select 6xx
 162         select FSL_SOC
 163         select 83xx
 164         select PPC_FPU
 165
 166 config PPC_85xx
 167         bool "Freescale 85xx"
 168         select E500
 169         select FSL_SOC
 170         select 85xx
 171
 172 config PPC_86xx
 173         bool "Freescale 86xx"
 174         select 6xx
 175         select FSL_SOC
 176         select PPC_FPU
 177         select ALTIVEC
 178         help
 179           The Freescale E600 SoCs have 74xx cores.
 180
 181 config PPC_8xx
 182         bool "Freescale 8xx"
 183         select FSL_SOC
 184         select 8xx
 185
 186 config 40x
 187         bool "AMCC 40x"
 188         select PPC_DCR_NATIVE
 189
 190 config 44x
 191         bool "AMCC 44x"
 192         select PPC_DCR_NATIVE
 193
 194
 195 config E200
 196         bool "Freescale e200"
 197
 198 endchoice
 199
 200 config POWER4_ONLY
 201         bool "Optimize for POWER4"
 202         depends on PPC64
 203         default n
 204         ---help---
 205           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
 206           The resulting binary will not work on POWER3 or RS64 processors
 207           when compiled with binutils 2.15 or later.
 208
 209 config POWER3
 210         bool
 211         depends on PPC64
 212         default y if !POWER4_ONLY
 213
 214 config POWER4
 215         depends on PPC64
 216         def_bool y
 217
 218 config 6xx
 219         bool
 220
 221 # this is temp to handle compat with arch=ppc
 222 config 8xx
 223         bool
 224
 225 # this is temp to handle compat with arch=ppc
 226 config 83xx
 227         bool
 228
 229 # this is temp to handle compat with arch=ppc
 230 config 85xx
 231         bool
 232
 233 config E500
 234         bool
 235
 236 config PPC_FPU
 237         bool
 238         default y if PPC64
 239
 240 config PPC_DCR_NATIVE
 241         bool
 242         default n
 243
 244 config PPC_DCR_MMIO
 245         bool
 246         default n
 247
 248 config PPC_DCR
 249         bool
 250         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 251         default y
 252
 253 config PPC_OF_PLATFORM_PCI
 254         bool
 255         depends on PPC64 # not supported on 32 bits yet
 256         default n
 257
 258 config BOOKE
 259         bool
 260         depends on E200 || E500
 261         default y
 262
 263 config FSL_BOOKE
 264         bool
 265         depends on E200 || E500
 266         default y
 267
 268 config PTE_64BIT
 269         bool
 270         depends on 44x || E500
 271         default y if 44x
 272         default y if E500 && PHYS_64BIT
 273
 274 config PHYS_64BIT
 275         bool 'Large physical address support' if E500
 276         depends on 44x || E500
 277         select RESOURCES_64BIT
 278         default y if 44x
 279         ---help---
 280           This option enables kernel support for larger than 32-bit physical
 281           addresses.  This features is not be available on all e500 cores.
 282
 283           If in doubt, say N here.
 284
 285 config ALTIVEC
 286         bool "AltiVec Support"
 287         depends on CLASSIC32 || POWER4
 288         ---help---
 289           This option enables kernel support for the Altivec extensions to the
 290           PowerPC processor. The kernel currently supports saving and restoring
 291           altivec registers, and turning on the 'altivec enable' bit so user
 292           processes can execute altivec instructions.
 293
 294           This option is only usefully if you have a processor that supports
 295           altivec (G4, otherwise known as 74xx series), but does not have
 296           any affect on a non-altivec cpu (it does, however add code to the
 297           kernel).
 298
 299           If in doubt, say Y here.
 300
 301 config SPE
 302         bool "SPE Support"
 303         depends on E200 || E500
 304         default y
 305         ---help---
 306           This option enables kernel support for the Signal Processing
 307           Extensions (SPE) to the PowerPC processor. The kernel currently
 308           supports saving and restoring SPE registers, and turning on the
 309           'spe enable' bit so user processes can execute SPE instructions.
 310
 311           This option is only useful if you have a processor that supports
 312           SPE (e500, otherwise known as 85xx series), but does not have any
 313           effect on a non-spe cpu (it does, however add code to the kernel).
 314
 315           If in doubt, say Y here.
 316
 317 config PPC_STD_MMU
 318         bool
 319         depends on 6xx || POWER3 || POWER4 || PPC64
 320         default y
 321
 322 config PPC_STD_MMU_32
 323         def_bool y
 324         depends on PPC_STD_MMU && PPC32
 325
 326 config VIRT_CPU_ACCOUNTING
 327         bool "Deterministic task and CPU time accounting"
 328         depends on PPC64
 329         default y
 330         help
 331           Select this option to enable more accurate task and CPU time
 332           accounting.  This is done by reading a CPU counter on each
 333           kernel entry and exit and on transitions within the kernel
 334           between system, softirq and hardirq state, so there is a
 335           small performance impact.  This also enables accounting of
 336           stolen time on logically-partitioned systems running on
 337           IBM POWER5-based machines.
 338
 339           If in doubt, say Y here.
 340
 341 config SMP
 342         depends on PPC_STD_MMU
 343         bool "Symmetric multi-processing support"
 344         ---help---
 345           This enables support for systems with more than one CPU. If you have
 346           a system with only one CPU, say N. If you have a system with more
 347           than one CPU, say Y.  Note that the kernel does not currently
 348           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 349           since they have inadequate hardware support for multiprocessor
 350           operation.
 351
 352           If you say N here, the kernel will run on single and multiprocessor
 353           machines, but will use only one CPU of a multiprocessor machine. If
 354           you say Y here, the kernel will run on single-processor machines.
 355           On a single-processor machine, the kernel will run faster if you say
 356           N here.
 357
 358           If you don't know what to do here, say N.
 359
 360 config NR_CPUS
 361         int "Maximum number of CPUs (2-128)"
 362         range 2 128
 363         depends on SMP
 364         default "32" if PPC64
 365         default "4"
 366
 367 config NOT_COHERENT_CACHE
 368         bool
 369         depends on 4xx || 8xx || E200
 370         default y
 371 endmenu
 372
 373 source "init/Kconfig"
 374
 375 source "arch/powerpc/platforms/Kconfig"
 376
 377 source arch/powerpc/platforms/embedded6xx/Kconfig
 378 source arch/powerpc/platforms/4xx/Kconfig
 379 source arch/powerpc/platforms/82xx/Kconfig
 380 source arch/powerpc/platforms/83xx/Kconfig
 381 source arch/powerpc/platforms/85xx/Kconfig
 382 source arch/powerpc/platforms/86xx/Kconfig
 383 source arch/powerpc/platforms/8xx/Kconfig
 384
 385 menu "Kernel options"
 386
 387 config HIGHMEM
 388         bool "High memory support"
 389         depends on PPC32
 390
 391 source kernel/Kconfig.hz
 392 source kernel/Kconfig.preempt
 393 source "fs/Kconfig.binfmt"
 394
 395 # We optimistically allocate largepages from the VM, so make the limit
 396 # large enough (16MB). This badly named config option is actually
 397 # max order + 1
 398 config FORCE_MAX_ZONEORDER
 399         int
 400         depends on PPC64
 401         default "9" if PPC_64K_PAGES
 402         default "13"
 403
 404 config MATH_EMULATION
 405         bool "Math emulation"
 406         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 407         ---help---
 408           Some PowerPC chips designed for embedded applications do not have
 409           a floating-point unit and therefore do not implement the
 410           floating-point instructions in the PowerPC instruction set.  If you
 411           say Y here, the kernel will include code to emulate a floating-point
 412           unit, which will allow programs that use floating-point
 413           instructions to run.
 414
 415 config IOMMU_VMERGE
 416         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 417         depends on EXPERIMENTAL && PPC64
 418         default n
 419         help
 420           Cause IO segments sent to a device for DMA to be merged virtually
 421           by the IOMMU when they happen to have been allocated contiguously.
 422           This doesn't add pressure to the IOMMU allocator. However, some
 423           drivers don't support getting large merged segments coming back
 424           from *_map_sg(). Say Y if you know the drivers you are using are
 425           properly handling this case.
 426
 427 config HOTPLUG_CPU
 428         bool "Support for enabling/disabling CPUs"
 429         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 430         ---help---
 431           Say Y here to be able to disable and re-enable individual
 432           CPUs at runtime on SMP machines.
 433
 434           Say N if you are unsure.
 435
 436 config ARCH_ENABLE_MEMORY_HOTPLUG
 437         def_bool y
 438
 439 config KEXEC
 440         bool "kexec system call (EXPERIMENTAL)"
 441         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 442         help
 443           kexec is a system call that implements the ability to shutdown your
 444           current kernel, and to start another kernel.  It is like a reboot
 445           but it is independent of the system firmware.   And like a reboot
 446           you can start any kernel with it, not just Linux.
 447
 448           The name comes from the similarity to the exec system call.
 449
 450           It is an ongoing process to be certain the hardware in a machine
 451           is properly shutdown, so do not be surprised if this code does not
 452           initially work for you.  It may help to enable device hotplugging
 453           support.  As of this writing the exact hardware interface is
 454           strongly in flux, so no good recommendation can be made.
 455
 456 config CRASH_DUMP
 457         bool "Build a kdump crash kernel (EXPERIMENTAL)"
 458         depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
 459         help
 460           Build a kernel suitable for use as a kdump capture kernel.
 461           The kernel will be linked at a different address than normal, and
 462           so can only be used for Kdump.
 463
 464           Don't change this unless you know what you are doing.
 465
 466 config EMBEDDEDBOOT
 467         bool
 468         depends on 8xx || 8260
 469         default y
 470
 471 config PC_KEYBOARD
 472         bool "PC PS/2 style Keyboard"
 473         depends on 4xx || CPM2
 474
 475 config PPCBUG_NVRAM
 476         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 477         default y if PPC_PREP
 478
 479 config IRQ_ALL_CPUS
 480         bool "Distribute interrupts on all CPUs by default"
 481         depends on SMP && !MV64360
 482         help
 483           This option gives the kernel permission to distribute IRQs across
 484           multiple CPUs.  Saying N here will route all IRQs to the first
 485           CPU.  Generally saying Y is safe, although some problems have been
 486           reported with SMP Power Macintoshes with this option enabled.
 487
 488
 489 config NUMA
 490         bool "NUMA support"
 491         depends on PPC64
 492         default y if SMP && PPC_PSERIES
 493
 494 config NODES_SHIFT
 495         int
 496         default "4"
 497         depends on NEED_MULTIPLE_NODES
 498
 499 config ARCH_SELECT_MEMORY_MODEL
 500         def_bool y
 501         depends on PPC64
 502
 503 config ARCH_FLATMEM_ENABLE
 504         def_bool y
 505         depends on (PPC64 && !NUMA) || PPC32
 506
 507 config ARCH_SPARSEMEM_ENABLE
 508         def_bool y
 509         depends on PPC64
 510
 511 config ARCH_SPARSEMEM_DEFAULT
 512         def_bool y
 513         depends on (SMP && PPC_PSERIES) || PPC_PS3
 514
 515 config ARCH_POPULATES_NODE_MAP
 516         def_bool y
 517
 518 source "mm/Kconfig"
 519
 520 config ARCH_MEMORY_PROBE
 521         def_bool y
 522         depends on MEMORY_HOTPLUG
 523
 524 # Some NUMA nodes have memory ranges that span
 525 # other nodes.  Even though a pfn is valid and
 526 # between a node's start and end pfns, it may not
 527 # reside on that node.  See memmap_init_zone()
 528 # for details.
 529 config NODES_SPAN_OTHER_NODES
 530         def_bool y
 531         depends on NEED_MULTIPLE_NODES
 532
 533 config PPC_64K_PAGES
 534         bool "64k page size"
 535         depends on PPC64
 536         help
 537           This option changes the kernel logical page size to 64k. On machines
 538           without processor support for 64k pages, the kernel will simulate
 539           them by loading each individual 4k page on demand transparently,
 540           while on hardware with such support, it will be used to map
 541           normal application pages.
 542
 543 config SCHED_SMT
 544         bool "SMT (Hyperthreading) scheduler support"
 545         depends on PPC64 && SMP
 546         help
 547           SMT scheduler support improves the CPU scheduler's decision making
 548           when dealing with POWER5 cpus at a cost of slightly increased
 549           overhead in some places. If unsure say N here.
 550
 551 config PROC_DEVICETREE
 552         bool "Support for device tree in /proc"
 553         depends on PROC_FS
 554         help
 555           This option adds a device-tree directory under /proc which contains
 556           an image of the device tree that the kernel copies from Open
 557           Firmware or other boot firmware. If unsure, say Y here.
 558
 559 config CMDLINE_BOOL
 560         bool "Default bootloader kernel arguments"
 561
 562 config CMDLINE
 563         string "Initial kernel command string"
 564         depends on CMDLINE_BOOL
 565         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 566         help
 567           On some platforms, there is currently no way for the boot loader to
 568           pass arguments to the kernel. For these platforms, you can supply
 569           some command-line options at build time by entering them here.  In
 570           most cases you will need to specify the root device here.
 571
 572 if !44x || BROKEN
 573 source kernel/power/Kconfig
 574 endif
 575
 576 config SECCOMP
 577         bool "Enable seccomp to safely compute untrusted bytecode"
 578         depends on PROC_FS
 579         default y
 580         help
 581           This kernel feature is useful for number crunching applications
 582           that may need to compute untrusted bytecode during their
 583           execution. By using pipes or other transports made available to
 584           the process as file descriptors supporting the read/write
 585           syscalls, it's possible to isolate those applications in
 586           their own address space using seccomp. Once seccomp is
 587           enabled via /proc/<pid>/seccomp, it cannot be disabled
 588           and the task is only allowed to execute a few safe syscalls
 589           defined by each seccomp mode.
 590
 591           If unsure, say Y. Only embedded should say N here.
 592
 593 endmenu
 594
 595 config ISA_DMA_API
 596         bool
 597         default y
 598
 599 menu "Bus options"
 600
 601 config ISA
 602         bool "Support for ISA-bus hardware"
 603         depends on PPC_PREP || PPC_CHRP
 604         select PPC_I8259
 605         help
 606           Find out whether you have ISA slots on your motherboard.  ISA is the
 607           name of a bus system, i.e. the way the CPU talks to the other stuff
 608           inside your box.  If you have an Apple machine, say N here; if you
 609           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 610           you have an embedded board, consult your board documentation.
 611
 612 config ZONE_DMA
 613         bool
 614         default y
 615
 616 config GENERIC_ISA_DMA
 617         bool
 618         depends on PPC64 || POWER4 || 6xx && !CPM2
 619         default y
 620
 621 config MPIC
 622         bool
 623         default n
 624
 625 config MPIC_WEIRD
 626         bool
 627         default n
 628
 629 config PPC_I8259
 630         bool
 631         default n
 632
 633 config PPC_INDIRECT_PCI
 634         bool
 635         depends on PCI
 636         default y if 40x || 44x
 637         default n
 638
 639 config EISA
 640         bool
 641
 642 config SBUS
 643         bool
 644
 645 config FSL_SOC
 646         bool
 647
 648 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 649 config MCA
 650         bool
 651
 652 config PCI
 653         bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
 654                 || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
 655                 || MPC7448HPC2 || PPC_PS3
 656         default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
 657                 && !PPC_85xx && !PPC_86xx
 658         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
 659         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 660         help
 661           Find out whether your system includes a PCI bus. PCI is the name of
 662           a bus system, i.e. the way the CPU talks to the other stuff inside
 663           your box.  If you say Y here, the kernel will include drivers and
 664           infrastructure code to support PCI bus devices.
 665
 666 config PCI_DOMAINS
 667         bool
 668         default PCI
 669
 670 config PCI_QSPAN
 671         bool "QSpan PCI"
 672         depends on !4xx && !CPM2 && 8xx
 673         select PPC_I8259
 674         help
 675           Say Y here if you have a system based on a Motorola 8xx-series
 676           embedded processor with a QSPAN PCI interface, otherwise say N.
 677
 678 config PCI_8260
 679         bool
 680         depends on PCI && 8260
 681         select PPC_INDIRECT_PCI
 682         default y
 683
 684 config 8260_PCI9
 685         bool "Enable workaround for MPC826x erratum PCI 9"
 686         depends on PCI_8260 && !ADS8272
 687         default y
 688
 689 choice
 690         prompt "IDMA channel for PCI 9 workaround"
 691         depends on 8260_PCI9
 692
 693 config 8260_PCI9_IDMA1
 694         bool "IDMA1"
 695
 696 config 8260_PCI9_IDMA2
 697         bool "IDMA2"
 698
 699 config 8260_PCI9_IDMA3
 700         bool "IDMA3"
 701
 702 config 8260_PCI9_IDMA4
 703         bool "IDMA4"
 704
 705 endchoice
 706
 707 source "drivers/pci/pcie/Kconfig"
 708
 709 source "drivers/pci/Kconfig"
 710
 711 source "drivers/pcmcia/Kconfig"
 712
 713 source "drivers/pci/hotplug/Kconfig"
 714
 715 endmenu
 716
 717 menu "Advanced setup"
 718         depends on PPC32
 719
 720 config ADVANCED_OPTIONS
 721         bool "Prompt for advanced kernel configuration options"
 722         help
 723           This option will enable prompting for a variety of advanced kernel
 724           configuration options.  These options can cause the kernel to not
 725           work if they are set incorrectly, but can be used to optimize certain
 726           aspects of kernel memory management.
 727
 728           Unless you know what you are doing, say N here.
 729
 730 comment "Default settings for advanced configuration options are used"
 731         depends on !ADVANCED_OPTIONS
 732
 733 config HIGHMEM_START_BOOL
 734         bool "Set high memory pool address"
 735         depends on ADVANCED_OPTIONS && HIGHMEM
 736         help
 737           This option allows you to set the base address of the kernel virtual
 738           area used to map high memory pages.  This can be useful in
 739           optimizing the layout of kernel virtual memory.
 740
 741           Say N here unless you know what you are doing.
 742
 743 config HIGHMEM_START
 744         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
 745         default "0xfe000000"
 746
 747 config LOWMEM_SIZE_BOOL
 748         bool "Set maximum low memory"
 749         depends on ADVANCED_OPTIONS
 750         help
 751           This option allows you to set the maximum amount of memory which
 752           will be used as "low memory", that is, memory which the kernel can
 753           access directly, without having to set up a kernel virtual mapping.
 754           This can be useful in optimizing the layout of kernel virtual
 755           memory.
 756
 757           Say N here unless you know what you are doing.
 758
 759 config LOWMEM_SIZE
 760         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 761         default "0x30000000"
 762
 763 config KERNEL_START_BOOL
 764         bool "Set custom kernel base address"
 765         depends on ADVANCED_OPTIONS
 766         help
 767           This option allows you to set the kernel virtual address at which
 768           the kernel will map low memory (the kernel image will be linked at
 769           this address).  This can be useful in optimizing the virtual memory
 770           layout of the system.
 771
 772           Say N here unless you know what you are doing.
 773
 774 config KERNEL_START
 775         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 776         default "0xc0000000"
 777
 778 config TASK_SIZE_BOOL
 779         bool "Set custom user task size"
 780         depends on ADVANCED_OPTIONS
 781         help
 782           This option allows you to set the amount of virtual address space
 783           allocated to user tasks.  This can be useful in optimizing the
 784           virtual memory layout of the system.
 785
 786           Say N here unless you know what you are doing.
 787
 788 config TASK_SIZE
 789         hex "Size of user task space" if TASK_SIZE_BOOL
 790         default "0x80000000"
 791
 792 config CONSISTENT_START_BOOL
 793         bool "Set custom consistent memory pool address"
 794         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 795         help
 796           This option allows you to set the base virtual address
 797           of the consistent memory pool.  This pool of virtual
 798           memory is used to make consistent memory allocations.
 799
 800 config CONSISTENT_START
 801         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 802         default "0xff100000" if NOT_COHERENT_CACHE
 803
 804 config CONSISTENT_SIZE_BOOL
 805         bool "Set custom consistent memory pool size"
 806         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 807         help
 808           This option allows you to set the size of the
 809           consistent memory pool.  This pool of virtual memory
 810           is used to make consistent memory allocations.
 811
 812 config CONSISTENT_SIZE
 813         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 814         default "0x00200000" if NOT_COHERENT_CACHE
 815
 816 config BOOT_LOAD_BOOL
 817         bool "Set the boot link/load address"
 818         depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
 819         help
 820           This option allows you to set the initial load address of the zImage
 821           or zImage.initrd file.  This can be useful if you are on a board
 822           which has a small amount of memory.
 823
 824           Say N here unless you know what you are doing.
 825
 826 config BOOT_LOAD
 827         hex "Link/load address for booting" if BOOT_LOAD_BOOL
 828         default "0x00400000" if 40x || 8xx || 8260
 829         default "0x01000000" if 44x
 830         default "0x00800000"
 831
 832 config PIN_TLB
 833         bool "Pinned Kernel TLBs (860 ONLY)"
 834         depends on ADVANCED_OPTIONS && 8xx
 835 endmenu
 836
 837 if PPC64
 838 config KERNEL_START
 839         hex
 840         default "0xc000000000000000"
 841 endif
 842
 843 source "net/Kconfig"
 844
 845 source "drivers/Kconfig"
 846
 847 source "fs/Kconfig"
 848
 849 # XXX source "arch/ppc/8xx_io/Kconfig"
 850
 851 # XXX source "arch/ppc/8260_io/Kconfig"
 852
 853 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 854
 855
 856 source "lib/Kconfig"
 857
 858 menu "Instrumentation Support"
 859         depends on EXPERIMENTAL
 860
 861 source "arch/powerpc/oprofile/Kconfig"
 862
 863 config KPROBES
 864         bool "Kprobes (EXPERIMENTAL)"
 865         depends on !BOOKE && !4xx && KALLSYMS && EXPERIMENTAL && MODULES
 866         help
 867           Kprobes allows you to trap at almost any kernel address and
 868           execute a callback function.  register_kprobe() establishes
 869           a probepoint and specifies the callback.  Kprobes is useful
 870           for kernel debugging, non-intrusive instrumentation and testing.
 871           If in doubt, say "N".
 872 endmenu
 873
 874 source "arch/powerpc/Kconfig.debug"
 875
 876 source "security/Kconfig"
 877
 878 config KEYS_COMPAT
 879         bool
 880         depends on COMPAT && KEYS
 881         default y
 882
 883 source "crypto/Kconfig"