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 PPC32
  15         bool
  16         default y if !PPC64
  17
  18 config 64BIT
  19         bool
  20         default y if PPC64
  21
  22 config PPC_MERGE
  23         def_bool y
  24
  25 config MMU
  26         bool
  27         default y
  28
  29 config GENERIC_HARDIRQS
  30         bool
  31         default y
  32
  33 config IRQ_PER_CPU
  34         bool
  35         default y
  36
  37 config RWSEM_GENERIC_SPINLOCK
  38         bool
  39
  40 config RWSEM_XCHGADD_ALGORITHM
  41         bool
  42         default y
  43
  44 config GENERIC_HWEIGHT
  45         bool
  46         default y
  47
  48 config GENERIC_CALIBRATE_DELAY
  49         bool
  50         default y
  51
  52 config GENERIC_FIND_NEXT_BIT
  53         bool
  54         default y
  55
  56 config PPC
  57         bool
  58         default y
  59
  60 config EARLY_PRINTK
  61         bool
  62         default y
  63
  64 config COMPAT
  65         bool
  66         default y if PPC64
  67
  68 config SYSVIPC_COMPAT
  69         bool
  70         depends on COMPAT && SYSVIPC
  71         default y
  72
  73 # All PPC32s use generic nvram driver through ppc_md
  74 config GENERIC_NVRAM
  75         bool
  76         default y if PPC32
  77
  78 config SCHED_NO_NO_OMIT_FRAME_POINTER
  79         bool
  80         default y
  81
  82 config ARCH_MAY_HAVE_PC_FDC
  83         bool
  84         default y
  85
  86 config PPC_OF
  87         def_bool y
  88
  89 config PPC_UDBG_16550
  90         bool
  91         default n
  92
  93 config GENERIC_TBSYNC
  94         bool
  95         default y if PPC32 && SMP
  96         default n
  97
  98 config AUDIT_ARCH
  99         bool
 100         default y
 101
 102 config DEFAULT_UIMAGE
 103         bool
 104         help
 105           Used to allow a board to specify it wants a uImage built by default
 106         default n
 107
 108 menu "Processor support"
 109 choice
 110         prompt "Processor Type"
 111         depends on PPC32
 112         default 6xx
 113
 114 config CLASSIC32
 115         bool "6xx/7xx/74xx"
 116         select PPC_FPU
 117         select 6xx
 118         help
 119           There are four families of PowerPC chips supported.  The more common
 120           types (601, 603, 604, 740, 750, 7400), the Motorola embedded
 121           versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
 122           embedded versions (403 and 405) and the high end 64 bit Power
 123           processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
 124
 125           Unless you are building a kernel for one of the embedded processor
 126           systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
 127           Note that the kernel runs in 32-bit mode even on 64-bit chips.
 128
 129 config PPC_52xx
 130         bool "Freescale 52xx"
 131         select 6xx
 132         select PPC_FPU
 133
 134 config PPC_82xx
 135         bool "Freescale 82xx"
 136         select 6xx
 137         select PPC_FPU
 138
 139 config PPC_83xx
 140         bool "Freescale 83xx"
 141         select 6xx
 142         select FSL_SOC
 143         select 83xx
 144         select PPC_FPU
 145
 146 config PPC_85xx
 147         bool "Freescale 85xx"
 148         select E500
 149         select FSL_SOC
 150         select 85xx
 151
 152 config PPC_86xx
 153         bool "Freescale 86xx"
 154         select 6xx
 155         select FSL_SOC
 156         select PPC_FPU
 157         select ALTIVEC
 158         help
 159           The Freescale E600 SoCs have 74xx cores.
 160
 161 config 40x
 162         bool "AMCC 40x"
 163         select PPC_DCR_NATIVE
 164
 165 config 44x
 166         bool "AMCC 44x"
 167         select PPC_DCR_NATIVE
 168
 169 config 8xx
 170         bool "Freescale 8xx"
 171
 172 config E200
 173         bool "Freescale e200"
 174
 175 endchoice
 176
 177 config POWER4_ONLY
 178         bool "Optimize for POWER4"
 179         depends on PPC64
 180         default n
 181         ---help---
 182           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
 183           The resulting binary will not work on POWER3 or RS64 processors
 184           when compiled with binutils 2.15 or later.
 185
 186 config POWER3
 187         bool
 188         depends on PPC64
 189         default y if !POWER4_ONLY
 190
 191 config POWER4
 192         depends on PPC64
 193         def_bool y
 194
 195 config 6xx
 196         bool
 197
 198 # this is temp to handle compat with arch=ppc
 199 config 83xx
 200         bool
 201
 202 # this is temp to handle compat with arch=ppc
 203 config 85xx
 204         bool
 205
 206 config E500
 207         bool
 208
 209 config PPC_FPU
 210         bool
 211         default y if PPC64
 212
 213 config PPC_DCR_NATIVE
 214         bool
 215         default n
 216
 217 config PPC_DCR_MMIO
 218         bool
 219         default n
 220
 221 config PPC_DCR
 222         bool
 223         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 224         default y
 225
 226 config PPC_OF_PLATFORM_PCI
 227         bool
 228         depends on PPC64 # not supported on 32 bits yet
 229         default n
 230
 231 config BOOKE
 232         bool
 233         depends on E200 || E500
 234         default y
 235
 236 config FSL_BOOKE
 237         bool
 238         depends on E200 || E500
 239         default y
 240
 241 config PTE_64BIT
 242         bool
 243         depends on 44x || E500
 244         default y if 44x
 245         default y if E500 && PHYS_64BIT
 246
 247 config PHYS_64BIT
 248         bool 'Large physical address support' if E500
 249         depends on 44x || E500
 250         default y if 44x
 251         ---help---
 252           This option enables kernel support for larger than 32-bit physical
 253           addresses.  This features is not be available on all e500 cores.
 254
 255           If in doubt, say N here.
 256
 257 config ALTIVEC
 258         bool "AltiVec Support"
 259         depends on CLASSIC32 || POWER4
 260         ---help---
 261           This option enables kernel support for the Altivec extensions to the
 262           PowerPC processor. The kernel currently supports saving and restoring
 263           altivec registers, and turning on the 'altivec enable' bit so user
 264           processes can execute altivec instructions.
 265
 266           This option is only usefully if you have a processor that supports
 267           altivec (G4, otherwise known as 74xx series), but does not have
 268           any affect on a non-altivec cpu (it does, however add code to the
 269           kernel).
 270
 271           If in doubt, say Y here.
 272
 273 config SPE
 274         bool "SPE Support"
 275         depends on E200 || E500
 276         default y
 277         ---help---
 278           This option enables kernel support for the Signal Processing
 279           Extensions (SPE) to the PowerPC processor. The kernel currently
 280           supports saving and restoring SPE registers, and turning on the
 281           'spe enable' bit so user processes can execute SPE instructions.
 282
 283           This option is only useful if you have a processor that supports
 284           SPE (e500, otherwise known as 85xx series), but does not have any
 285           effect on a non-spe cpu (it does, however add code to the kernel).
 286
 287           If in doubt, say Y here.
 288
 289 config PPC_STD_MMU
 290         bool
 291         depends on 6xx || POWER3 || POWER4 || PPC64
 292         default y
 293
 294 config PPC_STD_MMU_32
 295         def_bool y
 296         depends on PPC_STD_MMU && PPC32
 297
 298 config VIRT_CPU_ACCOUNTING
 299         bool "Deterministic task and CPU time accounting"
 300         depends on PPC64
 301         default y
 302         help
 303           Select this option to enable more accurate task and CPU time
 304           accounting.  This is done by reading a CPU counter on each
 305           kernel entry and exit and on transitions within the kernel
 306           between system, softirq and hardirq state, so there is a
 307           small performance impact.  This also enables accounting of
 308           stolen time on logically-partitioned systems running on
 309           IBM POWER5-based machines.
 310
 311           If in doubt, say Y here.
 312
 313 config SMP
 314         depends on PPC_STD_MMU
 315         bool "Symmetric multi-processing support"
 316         ---help---
 317           This enables support for systems with more than one CPU. If you have
 318           a system with only one CPU, say N. If you have a system with more
 319           than one CPU, say Y.  Note that the kernel does not currently
 320           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 321           since they have inadequate hardware support for multiprocessor
 322           operation.
 323
 324           If you say N here, the kernel will run on single and multiprocessor
 325           machines, but will use only one CPU of a multiprocessor machine. If
 326           you say Y here, the kernel will run on single-processor machines.
 327           On a single-processor machine, the kernel will run faster if you say
 328           N here.
 329
 330           If you don't know what to do here, say N.
 331
 332 config NR_CPUS
 333         int "Maximum number of CPUs (2-128)"
 334         range 2 128
 335         depends on SMP
 336         default "32" if PPC64
 337         default "4"
 338
 339 config NOT_COHERENT_CACHE
 340         bool
 341         depends on 4xx || 8xx || E200
 342         default y
 343 endmenu
 344
 345 source "init/Kconfig"
 346
 347 menu "Platform support"
 348         depends on PPC64 || CLASSIC32
 349
 350 choice
 351         prompt "Machine type"
 352         default PPC_MULTIPLATFORM
 353
 354 config PPC_MULTIPLATFORM
 355         bool "Generic desktop/server/laptop"
 356         help
 357           Select this option if configuring for an IBM pSeries or
 358           RS/6000 machine, an Apple machine, or a PReP, CHRP,
 359           Maple or Cell-based machine.
 360
 361 config EMBEDDED6xx
 362         bool "Embedded 6xx/7xx/7xxx-based board"
 363         depends on PPC32 && (BROKEN||BROKEN_ON_SMP)
 364
 365 config APUS
 366         bool "Amiga-APUS"
 367         depends on PPC32 && BROKEN
 368         help
 369           Select APUS if configuring for a PowerUP Amiga.
 370           More information is available at:
 371           <http://linux-apus.sourceforge.net/>.
 372 endchoice
 373
 374 config QUICC_ENGINE
 375         bool
 376         depends on PPC_MPC836x || PPC_MPC832x
 377         default y
 378         help
 379           The QUICC Engine (QE) is a new generation of communications
 380           coprocessors on Freescale embedded CPUs (akin to CPM in older chips).
 381           Selecting this option means that you wish to build a kernel
 382           for a machine with a QE coprocessor.
 383
 384 config PPC_PSERIES
 385         depends on PPC_MULTIPLATFORM && PPC64
 386         bool "IBM pSeries & new (POWER5-based) iSeries"
 387         select MPIC
 388         select PPC_I8259
 389         select PPC_RTAS
 390         select RTAS_ERROR_LOGGING
 391         select PPC_UDBG_16550
 392         default y
 393
 394 config PPC_ISERIES
 395         bool "IBM Legacy iSeries"
 396         depends on PPC_MULTIPLATFORM && PPC64
 397         select PPC_INDIRECT_IO
 398
 399 config PPC_CHRP
 400         bool "Common Hardware Reference Platform (CHRP) based machines"
 401         depends on PPC_MULTIPLATFORM && PPC32
 402         select MPIC
 403         select PPC_I8259
 404         select PPC_INDIRECT_PCI
 405         select PPC_RTAS
 406         select PPC_MPC106
 407         select PPC_UDBG_16550
 408         default y
 409
 410 config PPC_EFIKA
 411         bool "bPlan Efika 5k2. MPC5200B based computer"
 412         depends on PPC_MULTIPLATFORM && PPC32
 413         select PPC_RTAS
 414         select RTAS_PROC
 415         select PPC_MPC52xx
 416         default y
 417
 418 config PPC_PMAC
 419         bool "Apple PowerMac based machines"
 420         depends on PPC_MULTIPLATFORM
 421         select MPIC
 422         select PPC_INDIRECT_PCI if PPC32
 423         select PPC_MPC106 if PPC32
 424         default y
 425
 426 config PPC_PMAC64
 427         bool
 428         depends on PPC_PMAC && POWER4
 429         select MPIC
 430         select U3_DART
 431         select MPIC_BROKEN_U3
 432         select GENERIC_TBSYNC
 433         select PPC_970_NAP
 434         default y
 435
 436 config PPC_PREP
 437         bool "PowerPC Reference Platform (PReP) based machines"
 438         depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
 439         select MPIC
 440         select PPC_I8259
 441         select PPC_INDIRECT_PCI
 442         select PPC_UDBG_16550
 443         default y
 444
 445 config PPC_MAPLE
 446         depends on PPC_MULTIPLATFORM && PPC64
 447         bool "Maple 970FX Evaluation Board"
 448         select MPIC
 449         select U3_DART
 450         select MPIC_BROKEN_U3
 451         select GENERIC_TBSYNC
 452         select PPC_UDBG_16550
 453         select PPC_970_NAP
 454         default n
 455         help
 456           This option enables support for the Maple 970FX Evaluation Board.
 457           For more information, refer to <http://www.970eval.com>
 458
 459 config PPC_PASEMI
 460         depends on PPC_MULTIPLATFORM && PPC64
 461         bool "PA Semi SoC-based platforms"
 462         default n
 463         select MPIC
 464         select PPC_UDBG_16550
 465         select GENERIC_TBSYNC
 466         help
 467           This option enables support for PA Semi's PWRficient line
 468           of SoC processors, including PA6T-1682M
 469
 470 config PPC_CELL
 471         bool
 472         default n
 473
 474 config PPC_CELL_NATIVE
 475         bool
 476         select PPC_CELL
 477         select PPC_DCR_MMIO
 478         select PPC_OF_PLATFORM_PCI
 479         select MPIC
 480         default n
 481
 482 config PPC_IBM_CELL_BLADE
 483         bool "IBM Cell Blade"
 484         depends on PPC_MULTIPLATFORM && PPC64
 485         select PPC_CELL_NATIVE
 486         select PPC_RTAS
 487         select MMIO_NVRAM
 488         select PPC_UDBG_16550
 489         select UDBG_RTAS_CONSOLE
 490
 491 config UDBG_RTAS_CONSOLE
 492         bool "RTAS based debug console"
 493         depends on PPC_RTAS
 494         default n
 495
 496 config XICS
 497         depends on PPC_PSERIES
 498         bool
 499         default y
 500
 501 config U3_DART
 502         bool
 503         depends on PPC_MULTIPLATFORM && PPC64
 504         default n
 505
 506 config PPC_RTAS
 507         bool
 508         default n
 509
 510 config RTAS_ERROR_LOGGING
 511         bool
 512         depends on PPC_RTAS
 513         default n
 514
 515 config RTAS_PROC
 516         bool "Proc interface to RTAS"
 517         depends on PPC_RTAS
 518         default y
 519
 520 config RTAS_FLASH
 521         tristate "Firmware flash interface"
 522         depends on PPC64 && RTAS_PROC
 523
 524 config MMIO_NVRAM
 525         bool
 526         default n
 527
 528 config MPIC_BROKEN_U3
 529         bool
 530         depends on PPC_MAPLE
 531         default y
 532
 533 config IBMVIO
 534         depends on PPC_PSERIES || PPC_ISERIES
 535         bool
 536         default y
 537
 538 config IBMEBUS
 539         depends on PPC_PSERIES
 540         bool "Support for GX bus based adapters"
 541         help
 542           Bus device driver for GX bus based adapters.
 543
 544 config PPC_MPC106
 545         bool
 546         default n
 547
 548 config PPC_970_NAP
 549         bool
 550         default n
 551
 552 config PPC_INDIRECT_IO
 553         bool
 554         select GENERIC_IOMAP
 555         default n
 556
 557 config GENERIC_IOMAP
 558         bool
 559         default n
 560
 561 source "drivers/cpufreq/Kconfig"
 562
 563 config CPU_FREQ_PMAC
 564         bool "Support for Apple PowerBooks"
 565         depends on CPU_FREQ && ADB_PMU && PPC32
 566         select CPU_FREQ_TABLE
 567         help
 568           This adds support for frequency switching on Apple PowerBooks,
 569           this currently includes some models of iBook & Titanium
 570           PowerBook.
 571
 572 config CPU_FREQ_PMAC64
 573         bool "Support for some Apple G5s"
 574         depends on CPU_FREQ && PPC64
 575         select CPU_FREQ_TABLE
 576         help
 577           This adds support for frequency switching on Apple iMac G5,
 578           and some of the more recent desktop G5 machines as well.
 579
 580 config PPC601_SYNC_FIX
 581         bool "Workarounds for PPC601 bugs"
 582         depends on 6xx && (PPC_PREP || PPC_PMAC)
 583         help
 584           Some versions of the PPC601 (the first PowerPC chip) have bugs which
 585           mean that extra synchronization instructions are required near
 586           certain instructions, typically those that make major changes to the
 587           CPU state.  These extra instructions reduce performance slightly.
 588           If you say N here, these extra instructions will not be included,
 589           resulting in a kernel which will run faster but may not run at all
 590           on some systems with the PPC601 chip.
 591
 592           If in doubt, say Y here.
 593
 594 config TAU
 595         bool "On-chip CPU temperature sensor support"
 596         depends on 6xx
 597         help
 598           G3 and G4 processors have an on-chip temperature sensor called the
 599           'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
 600           temperature within 2-4 degrees Celsius. This option shows the current
 601           on-die temperature in /proc/cpuinfo if the cpu supports it.
 602
 603           Unfortunately, on some chip revisions, this sensor is very inaccurate
 604           and in many cases, does not work at all, so don't assume the cpu
 605           temp is actually what /proc/cpuinfo says it is.
 606
 607 config TAU_INT
 608         bool "Interrupt driven TAU driver (DANGEROUS)"
 609         depends on TAU
 610         ---help---
 611           The TAU supports an interrupt driven mode which causes an interrupt
 612           whenever the temperature goes out of range. This is the fastest way
 613           to get notified the temp has exceeded a range. With this option off,
 614           a timer is used to re-check the temperature periodically.
 615
 616           However, on some cpus it appears that the TAU interrupt hardware
 617           is buggy and can cause a situation which would lead unexplained hard
 618           lockups.
 619
 620           Unless you are extending the TAU driver, or enjoy kernel/hardware
 621           debugging, leave this option off.
 622
 623 config TAU_AVERAGE
 624         bool "Average high and low temp"
 625         depends on TAU
 626         ---help---
 627           The TAU hardware can compare the temperature to an upper and lower
 628           bound.  The default behavior is to show both the upper and lower
 629           bound in /proc/cpuinfo. If the range is large, the temperature is
 630           either changing a lot, or the TAU hardware is broken (likely on some
 631           G4's). If the range is small (around 4 degrees), the temperature is
 632           relatively stable.  If you say Y here, a single temperature value,
 633           halfway between the upper and lower bounds, will be reported in
 634           /proc/cpuinfo.
 635
 636           If in doubt, say N here.
 637
 638 endmenu
 639
 640 source arch/powerpc/platforms/embedded6xx/Kconfig
 641 source arch/powerpc/platforms/4xx/Kconfig
 642 source arch/powerpc/platforms/82xx/Kconfig
 643 source arch/powerpc/platforms/83xx/Kconfig
 644 source arch/powerpc/platforms/85xx/Kconfig
 645 source arch/powerpc/platforms/86xx/Kconfig
 646 source arch/powerpc/platforms/8xx/Kconfig
 647 source arch/powerpc/platforms/cell/Kconfig
 648
 649 menu "Kernel options"
 650
 651 config HIGHMEM
 652         bool "High memory support"
 653         depends on PPC32
 654
 655 source kernel/Kconfig.hz
 656 source kernel/Kconfig.preempt
 657 source "fs/Kconfig.binfmt"
 658
 659 # We optimistically allocate largepages from the VM, so make the limit
 660 # large enough (16MB). This badly named config option is actually
 661 # max order + 1
 662 config FORCE_MAX_ZONEORDER
 663         int
 664         depends on PPC64
 665         default "9" if PPC_64K_PAGES
 666         default "13"
 667
 668 config MATH_EMULATION
 669         bool "Math emulation"
 670         depends on 4xx || 8xx || E200 || E500
 671         ---help---
 672           Some PowerPC chips designed for embedded applications do not have
 673           a floating-point unit and therefore do not implement the
 674           floating-point instructions in the PowerPC instruction set.  If you
 675           say Y here, the kernel will include code to emulate a floating-point
 676           unit, which will allow programs that use floating-point
 677           instructions to run.
 678
 679 config IOMMU_VMERGE
 680         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 681         depends on EXPERIMENTAL && PPC64
 682         default n
 683         help
 684           Cause IO segments sent to a device for DMA to be merged virtually
 685           by the IOMMU when they happen to have been allocated contiguously.
 686           This doesn't add pressure to the IOMMU allocator. However, some
 687           drivers don't support getting large merged segments coming back
 688           from *_map_sg(). Say Y if you know the drivers you are using are
 689           properly handling this case.
 690
 691 config HOTPLUG_CPU
 692         bool "Support for enabling/disabling CPUs"
 693         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 694         ---help---
 695           Say Y here to be able to disable and re-enable individual
 696           CPUs at runtime on SMP machines.
 697
 698           Say N if you are unsure.
 699
 700 config ARCH_ENABLE_MEMORY_HOTPLUG
 701         def_bool y
 702
 703 config KEXEC
 704         bool "kexec system call (EXPERIMENTAL)"
 705         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 706         help
 707           kexec is a system call that implements the ability to shutdown your
 708           current kernel, and to start another kernel.  It is like a reboot
 709           but it is independent of the system firmware.   And like a reboot
 710           you can start any kernel with it, not just Linux.
 711
 712           The name comes from the similarity to the exec system call.
 713
 714           It is an ongoing process to be certain the hardware in a machine
 715           is properly shutdown, so do not be surprised if this code does not
 716           initially work for you.  It may help to enable device hotplugging
 717           support.  As of this writing the exact hardware interface is
 718           strongly in flux, so no good recommendation can be made.
 719
 720 config CRASH_DUMP
 721         bool "Build a kdump crash kernel (EXPERIMENTAL)"
 722         depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
 723         help
 724           Build a kernel suitable for use as a kdump capture kernel.
 725           The kernel will be linked at a different address than normal, and
 726           so can only be used for Kdump.
 727
 728           Don't change this unless you know what you are doing.
 729
 730 config EMBEDDEDBOOT
 731         bool
 732         depends on 8xx || 8260
 733         default y
 734
 735 config PC_KEYBOARD
 736         bool "PC PS/2 style Keyboard"
 737         depends on 4xx || CPM2
 738
 739 config PPCBUG_NVRAM
 740         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 741         default y if PPC_PREP
 742
 743 config IRQ_ALL_CPUS
 744         bool "Distribute interrupts on all CPUs by default"
 745         depends on SMP && !MV64360
 746         help
 747           This option gives the kernel permission to distribute IRQs across
 748           multiple CPUs.  Saying N here will route all IRQs to the first
 749           CPU.  Generally saying Y is safe, although some problems have been
 750           reported with SMP Power Macintoshes with this option enabled.
 751
 752 source "arch/powerpc/platforms/pseries/Kconfig"
 753
 754 config NUMA
 755         bool "NUMA support"
 756         depends on PPC64
 757         default y if SMP && PPC_PSERIES
 758
 759 config NODES_SHIFT
 760         int
 761         default "4"
 762         depends on NEED_MULTIPLE_NODES
 763
 764 config ARCH_SELECT_MEMORY_MODEL
 765         def_bool y
 766         depends on PPC64
 767
 768 config ARCH_FLATMEM_ENABLE
 769         def_bool y
 770         depends on (PPC64 && !NUMA) || PPC32
 771
 772 config ARCH_SPARSEMEM_ENABLE
 773         def_bool y
 774         depends on PPC64
 775
 776 config ARCH_SPARSEMEM_DEFAULT
 777         def_bool y
 778         depends on (SMP && PPC_PSERIES) || PPC_CELL
 779
 780 config ARCH_POPULATES_NODE_MAP
 781         def_bool y
 782
 783 source "mm/Kconfig"
 784
 785 config ARCH_MEMORY_PROBE
 786         def_bool y
 787         depends on MEMORY_HOTPLUG
 788
 789 # Some NUMA nodes have memory ranges that span
 790 # other nodes.  Even though a pfn is valid and
 791 # between a node's start and end pfns, it may not
 792 # reside on that node.  See memmap_init_zone()
 793 # for details.
 794 config NODES_SPAN_OTHER_NODES
 795         def_bool y
 796         depends on NEED_MULTIPLE_NODES
 797
 798 config PPC_64K_PAGES
 799         bool "64k page size"
 800         depends on PPC64
 801         help
 802           This option changes the kernel logical page size to 64k. On machines
 803           without processor support for 64k pages, the kernel will simulate
 804           them by loading each individual 4k page on demand transparently,
 805           while on hardware with such support, it will be used to map
 806           normal application pages.
 807
 808 config SCHED_SMT
 809         bool "SMT (Hyperthreading) scheduler support"
 810         depends on PPC64 && SMP
 811         help
 812           SMT scheduler support improves the CPU scheduler's decision making
 813           when dealing with POWER5 cpus at a cost of slightly increased
 814           overhead in some places. If unsure say N here.
 815
 816 config PROC_DEVICETREE
 817         bool "Support for device tree in /proc"
 818         depends on PROC_FS
 819         help
 820           This option adds a device-tree directory under /proc which contains
 821           an image of the device tree that the kernel copies from Open
 822           Firmware or other boot firmware. If unsure, say Y here.
 823
 824 source "arch/powerpc/platforms/prep/Kconfig"
 825
 826 config CMDLINE_BOOL
 827         bool "Default bootloader kernel arguments"
 828         depends on !PPC_ISERIES
 829
 830 config CMDLINE
 831         string "Initial kernel command string"
 832         depends on CMDLINE_BOOL
 833         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 834         help
 835           On some platforms, there is currently no way for the boot loader to
 836           pass arguments to the kernel. For these platforms, you can supply
 837           some command-line options at build time by entering them here.  In
 838           most cases you will need to specify the root device here.
 839
 840 if !44x || BROKEN
 841 source kernel/power/Kconfig
 842 endif
 843
 844 config SECCOMP
 845         bool "Enable seccomp to safely compute untrusted bytecode"
 846         depends on PROC_FS
 847         default y
 848         help
 849           This kernel feature is useful for number crunching applications
 850           that may need to compute untrusted bytecode during their
 851           execution. By using pipes or other transports made available to
 852           the process as file descriptors supporting the read/write
 853           syscalls, it's possible to isolate those applications in
 854           their own address space using seccomp. Once seccomp is
 855           enabled via /proc/<pid>/seccomp, it cannot be disabled
 856           and the task is only allowed to execute a few safe syscalls
 857           defined by each seccomp mode.
 858
 859           If unsure, say Y. Only embedded should say N here.
 860
 861 endmenu
 862
 863 config ISA_DMA_API
 864         bool
 865         default y
 866
 867 menu "Bus options"
 868
 869 config ISA
 870         bool "Support for ISA-bus hardware"
 871         depends on PPC_PREP || PPC_CHRP
 872         select PPC_I8259
 873         help
 874           Find out whether you have ISA slots on your motherboard.  ISA is the
 875           name of a bus system, i.e. the way the CPU talks to the other stuff
 876           inside your box.  If you have an Apple machine, say N here; if you
 877           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 878           you have an embedded board, consult your board documentation.
 879
 880 config GENERIC_ISA_DMA
 881         bool
 882         depends on PPC64 || POWER4 || 6xx && !CPM2
 883         default y
 884
 885 config MPIC
 886         bool
 887         default n
 888
 889 config MPIC_WEIRD
 890         bool
 891         default n
 892
 893 config PPC_I8259
 894         bool
 895         default n
 896
 897 config PPC_INDIRECT_PCI
 898         bool
 899         depends on PCI
 900         default y if 40x || 44x
 901         default n
 902
 903 config EISA
 904         bool
 905
 906 config SBUS
 907         bool
 908
 909 config FSL_SOC
 910         bool
 911
 912 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 913 config MCA
 914         bool
 915
 916 config PCI
 917         bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
 918                 || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) || MPC7448HPC2
 919         default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
 920                 && !PPC_85xx && !PPC_86xx
 921         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
 922         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 923         help
 924           Find out whether your system includes a PCI bus. PCI is the name of
 925           a bus system, i.e. the way the CPU talks to the other stuff inside
 926           your box.  If you say Y here, the kernel will include drivers and
 927           infrastructure code to support PCI bus devices.
 928
 929 config PCI_DOMAINS
 930         bool
 931         default PCI
 932
 933 config PCI_QSPAN
 934         bool "QSpan PCI"
 935         depends on !4xx && !CPM2 && 8xx
 936         select PPC_I8259
 937         help
 938           Say Y here if you have a system based on a Motorola 8xx-series
 939           embedded processor with a QSPAN PCI interface, otherwise say N.
 940
 941 config PCI_8260
 942         bool
 943         depends on PCI && 8260
 944         select PPC_INDIRECT_PCI
 945         default y
 946
 947 config 8260_PCI9
 948         bool "Enable workaround for MPC826x erratum PCI 9"
 949         depends on PCI_8260 && !ADS8272
 950         default y
 951
 952 choice
 953         prompt "IDMA channel for PCI 9 workaround"
 954         depends on 8260_PCI9
 955
 956 config 8260_PCI9_IDMA1
 957         bool "IDMA1"
 958
 959 config 8260_PCI9_IDMA2
 960         bool "IDMA2"
 961
 962 config 8260_PCI9_IDMA3
 963         bool "IDMA3"
 964
 965 config 8260_PCI9_IDMA4
 966         bool "IDMA4"
 967
 968 endchoice
 969
 970 source "drivers/pci/pcie/Kconfig"
 971
 972 source "drivers/pci/Kconfig"
 973
 974 source "drivers/pcmcia/Kconfig"
 975
 976 source "drivers/pci/hotplug/Kconfig"
 977
 978 endmenu
 979
 980 menu "Advanced setup"
 981         depends on PPC32
 982
 983 config ADVANCED_OPTIONS
 984         bool "Prompt for advanced kernel configuration options"
 985         help
 986           This option will enable prompting for a variety of advanced kernel
 987           configuration options.  These options can cause the kernel to not
 988           work if they are set incorrectly, but can be used to optimize certain
 989           aspects of kernel memory management.
 990
 991           Unless you know what you are doing, say N here.
 992
 993 comment "Default settings for advanced configuration options are used"
 994         depends on !ADVANCED_OPTIONS
 995
 996 config HIGHMEM_START_BOOL
 997         bool "Set high memory pool address"
 998         depends on ADVANCED_OPTIONS && HIGHMEM
 999         help
1000           This option allows you to set the base address of the kernel virtual
1001           area used to map high memory pages.  This can be useful in
1002           optimizing the layout of kernel virtual memory.
1003
1004           Say N here unless you know what you are doing.
1005
1006 config HIGHMEM_START
1007         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
1008         default "0xfe000000"
1009
1010 config LOWMEM_SIZE_BOOL
1011         bool "Set maximum low memory"
1012         depends on ADVANCED_OPTIONS
1013         help
1014           This option allows you to set the maximum amount of memory which
1015           will be used as "low memory", that is, memory which the kernel can
1016           access directly, without having to set up a kernel virtual mapping.
1017           This can be useful in optimizing the layout of kernel virtual
1018           memory.
1019
1020           Say N here unless you know what you are doing.
1021
1022 config LOWMEM_SIZE
1023         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
1024         default "0x30000000"
1025
1026 config KERNEL_START_BOOL
1027         bool "Set custom kernel base address"
1028         depends on ADVANCED_OPTIONS
1029         help
1030           This option allows you to set the kernel virtual address at which
1031           the kernel will map low memory (the kernel image will be linked at
1032           this address).  This can be useful in optimizing the virtual memory
1033           layout of the system.
1034
1035           Say N here unless you know what you are doing.
1036
1037 config KERNEL_START
1038         hex "Virtual address of kernel base" if KERNEL_START_BOOL
1039         default "0xc0000000"
1040
1041 config TASK_SIZE_BOOL
1042         bool "Set custom user task size"
1043         depends on ADVANCED_OPTIONS
1044         help
1045           This option allows you to set the amount of virtual address space
1046           allocated to user tasks.  This can be useful in optimizing the
1047           virtual memory layout of the system.
1048
1049           Say N here unless you know what you are doing.
1050
1051 config TASK_SIZE
1052         hex "Size of user task space" if TASK_SIZE_BOOL
1053         default "0x80000000"
1054
1055 config CONSISTENT_START_BOOL
1056         bool "Set custom consistent memory pool address"
1057         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1058         help
1059           This option allows you to set the base virtual address
1060           of the consistent memory pool.  This pool of virtual
1061           memory is used to make consistent memory allocations.
1062
1063 config CONSISTENT_START
1064         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
1065         default "0xff100000" if NOT_COHERENT_CACHE
1066
1067 config CONSISTENT_SIZE_BOOL
1068         bool "Set custom consistent memory pool size"
1069         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1070         help
1071           This option allows you to set the size of the
1072           consistent memory pool.  This pool of virtual memory
1073           is used to make consistent memory allocations.
1074
1075 config CONSISTENT_SIZE
1076         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1077         default "0x00200000" if NOT_COHERENT_CACHE
1078
1079 config BOOT_LOAD_BOOL
1080         bool "Set the boot link/load address"
1081         depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
1082         help
1083           This option allows you to set the initial load address of the zImage
1084           or zImage.initrd file.  This can be useful if you are on a board
1085           which has a small amount of memory.
1086
1087           Say N here unless you know what you are doing.
1088
1089 config BOOT_LOAD
1090         hex "Link/load address for booting" if BOOT_LOAD_BOOL
1091         default "0x00400000" if 40x || 8xx || 8260
1092         default "0x01000000" if 44x
1093         default "0x00800000"
1094
1095 config PIN_TLB
1096         bool "Pinned Kernel TLBs (860 ONLY)"
1097         depends on ADVANCED_OPTIONS && 8xx
1098 endmenu
1099
1100 if PPC64
1101 config KERNEL_START
1102         hex
1103         default "0xc000000000000000"
1104 endif
1105
1106 source "net/Kconfig"
1107
1108 source "drivers/Kconfig"
1109
1110 source "fs/Kconfig"
1111
1112 # XXX source "arch/ppc/8xx_io/Kconfig"
1113
1114 # XXX source "arch/ppc/8260_io/Kconfig"
1115
1116 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1117
1118 source "arch/powerpc/platforms/iseries/Kconfig"
1119
1120 source "lib/Kconfig"
1121
1122 menu "Instrumentation Support"
1123         depends on EXPERIMENTAL
1124
1125 source "arch/powerpc/oprofile/Kconfig"
1126
1127 config KPROBES
1128         bool "Kprobes (EXPERIMENTAL)"
1129         depends on PPC64 && KALLSYMS && EXPERIMENTAL && MODULES
1130         help
1131           Kprobes allows you to trap at almost any kernel address and
1132           execute a callback function.  register_kprobe() establishes
1133           a probepoint and specifies the callback.  Kprobes is useful
1134           for kernel debugging, non-intrusive instrumentation and testing.
1135           If in doubt, say "N".
1136 endmenu
1137
1138 source "arch/powerpc/Kconfig.debug"
1139
1140 source "security/Kconfig"
1141
1142 config KEYS_COMPAT
1143         bool
1144         depends on COMPAT && KEYS
1145         default y
1146
1147 source "crypto/Kconfig"