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 ARCH_HAS_ILOG2_U32
  45         bool
  46         default n
  47
  48 config ARCH_HAS_ILOG2_U64
  49         bool
  50         default n
  51
  52 config GENERIC_HWEIGHT
  53         bool
  54         default y
  55
  56 config GENERIC_CALIBRATE_DELAY
  57         bool
  58         default y
  59
  60 config GENERIC_FIND_NEXT_BIT
  61         bool
  62         default y
  63
  64 config PPC
  65         bool
  66         default y
  67
  68 config EARLY_PRINTK
  69         bool
  70         default y
  71
  72 config COMPAT
  73         bool
  74         default y if PPC64
  75
  76 config SYSVIPC_COMPAT
  77         bool
  78         depends on COMPAT && SYSVIPC
  79         default y
  80
  81 # All PPC32s use generic nvram driver through ppc_md
  82 config GENERIC_NVRAM
  83         bool
  84         default y if PPC32
  85
  86 config SCHED_NO_NO_OMIT_FRAME_POINTER
  87         bool
  88         default y
  89
  90 config ARCH_MAY_HAVE_PC_FDC
  91         bool
  92         default y
  93
  94 config PPC_OF
  95         def_bool y
  96
  97 config PPC_UDBG_16550
  98         bool
  99         default n
 100
 101 config GENERIC_TBSYNC
 102         bool
 103         default y if PPC32 && SMP
 104         default n
 105
 106 config AUDIT_ARCH
 107         bool
 108         default y
 109
 110 config DEFAULT_UIMAGE
 111         bool
 112         help
 113           Used to allow a board to specify it wants a uImage built by default
 114         default n
 115
 116 menu "Processor support"
 117 choice
 118         prompt "Processor Type"
 119         depends on PPC32
 120         default 6xx
 121
 122 config CLASSIC32
 123         bool "52xx/6xx/7xx/74xx"
 124         select PPC_FPU
 125         select 6xx
 126         help
 127           There are four families of PowerPC chips supported.  The more common
 128           types (601, 603, 604, 740, 750, 7400), the Motorola embedded
 129           versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
 130           embedded versions (403 and 405) and the high end 64 bit Power
 131           processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
 132
 133           This option is the catch-all for 6xx types, including some of the
 134           embedded versions.  Unless there is see an option for the specific
 135           chip family you are using, you want this option.
 136
 137           You do not want this if you are building a kernel for a 64 bit
 138           IBM RS/6000 or an Apple G5, choose 6xx.
 139
 140           If unsure, select this option
 141
 142           Note that the kernel runs in 32-bit mode even on 64-bit chips.
 143
 144 config PPC_82xx
 145         bool "Freescale 82xx"
 146         select 6xx
 147         select PPC_FPU
 148
 149 config PPC_83xx
 150         bool "Freescale 83xx"
 151         select 6xx
 152         select FSL_SOC
 153         select 83xx
 154         select PPC_FPU
 155
 156 config PPC_85xx
 157         bool "Freescale 85xx"
 158         select E500
 159         select FSL_SOC
 160         select 85xx
 161
 162 config PPC_86xx
 163         bool "Freescale 86xx"
 164         select 6xx
 165         select FSL_SOC
 166         select PPC_FPU
 167         select ALTIVEC
 168         help
 169           The Freescale E600 SoCs have 74xx cores.
 170
 171 config 40x
 172         bool "AMCC 40x"
 173         select PPC_DCR_NATIVE
 174
 175 config 44x
 176         bool "AMCC 44x"
 177         select PPC_DCR_NATIVE
 178
 179 config 8xx
 180         bool "Freescale 8xx"
 181
 182 config E200
 183         bool "Freescale e200"
 184
 185 endchoice
 186
 187 config POWER4_ONLY
 188         bool "Optimize for POWER4"
 189         depends on PPC64
 190         default n
 191         ---help---
 192           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
 193           The resulting binary will not work on POWER3 or RS64 processors
 194           when compiled with binutils 2.15 or later.
 195
 196 config POWER3
 197         bool
 198         depends on PPC64
 199         default y if !POWER4_ONLY
 200
 201 config POWER4
 202         depends on PPC64
 203         def_bool y
 204
 205 config 6xx
 206         bool
 207
 208 # this is temp to handle compat with arch=ppc
 209 config 83xx
 210         bool
 211
 212 # this is temp to handle compat with arch=ppc
 213 config 85xx
 214         bool
 215
 216 config E500
 217         bool
 218
 219 config PPC_FPU
 220         bool
 221         default y if PPC64
 222
 223 config PPC_DCR_NATIVE
 224         bool
 225         default n
 226
 227 config PPC_DCR_MMIO
 228         bool
 229         default n
 230
 231 config PPC_DCR
 232         bool
 233         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 234         default y
 235
 236 config PPC_OF_PLATFORM_PCI
 237         bool
 238         depends on PPC64 # not supported on 32 bits yet
 239         default n
 240
 241 config BOOKE
 242         bool
 243         depends on E200 || E500
 244         default y
 245
 246 config FSL_BOOKE
 247         bool
 248         depends on E200 || E500
 249         default y
 250
 251 config PTE_64BIT
 252         bool
 253         depends on 44x || E500
 254         default y if 44x
 255         default y if E500 && PHYS_64BIT
 256
 257 config PHYS_64BIT
 258         bool 'Large physical address support' if E500
 259         depends on 44x || E500
 260         select RESOURCES_64BIT
 261         default y if 44x
 262         ---help---
 263           This option enables kernel support for larger than 32-bit physical
 264           addresses.  This features is not be available on all e500 cores.
 265
 266           If in doubt, say N here.
 267
 268 config ALTIVEC
 269         bool "AltiVec Support"
 270         depends on CLASSIC32 || POWER4
 271         ---help---
 272           This option enables kernel support for the Altivec extensions to the
 273           PowerPC processor. The kernel currently supports saving and restoring
 274           altivec registers, and turning on the 'altivec enable' bit so user
 275           processes can execute altivec instructions.
 276
 277           This option is only usefully if you have a processor that supports
 278           altivec (G4, otherwise known as 74xx series), but does not have
 279           any affect on a non-altivec cpu (it does, however add code to the
 280           kernel).
 281
 282           If in doubt, say Y here.
 283
 284 config SPE
 285         bool "SPE Support"
 286         depends on E200 || E500
 287         default y
 288         ---help---
 289           This option enables kernel support for the Signal Processing
 290           Extensions (SPE) to the PowerPC processor. The kernel currently
 291           supports saving and restoring SPE registers, and turning on the
 292           'spe enable' bit so user processes can execute SPE instructions.
 293
 294           This option is only useful if you have a processor that supports
 295           SPE (e500, otherwise known as 85xx series), but does not have any
 296           effect on a non-spe cpu (it does, however add code to the kernel).
 297
 298           If in doubt, say Y here.
 299
 300 config PPC_STD_MMU
 301         bool
 302         depends on 6xx || POWER3 || POWER4 || PPC64
 303         default y
 304
 305 config PPC_STD_MMU_32
 306         def_bool y
 307         depends on PPC_STD_MMU && PPC32
 308
 309 config VIRT_CPU_ACCOUNTING
 310         bool "Deterministic task and CPU time accounting"
 311         depends on PPC64
 312         default y
 313         help
 314           Select this option to enable more accurate task and CPU time
 315           accounting.  This is done by reading a CPU counter on each
 316           kernel entry and exit and on transitions within the kernel
 317           between system, softirq and hardirq state, so there is a
 318           small performance impact.  This also enables accounting of
 319           stolen time on logically-partitioned systems running on
 320           IBM POWER5-based machines.
 321
 322           If in doubt, say Y here.
 323
 324 config SMP
 325         depends on PPC_STD_MMU
 326         bool "Symmetric multi-processing support"
 327         ---help---
 328           This enables support for systems with more than one CPU. If you have
 329           a system with only one CPU, say N. If you have a system with more
 330           than one CPU, say Y.  Note that the kernel does not currently
 331           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 332           since they have inadequate hardware support for multiprocessor
 333           operation.
 334
 335           If you say N here, the kernel will run on single and multiprocessor
 336           machines, but will use only one CPU of a multiprocessor machine. If
 337           you say Y here, the kernel will run on single-processor machines.
 338           On a single-processor machine, the kernel will run faster if you say
 339           N here.
 340
 341           If you don't know what to do here, say N.
 342
 343 config NR_CPUS
 344         int "Maximum number of CPUs (2-128)"
 345         range 2 128
 346         depends on SMP
 347         default "32" if PPC64
 348         default "4"
 349
 350 config NOT_COHERENT_CACHE
 351         bool
 352         depends on 4xx || 8xx || E200
 353         default y
 354 endmenu
 355
 356 source "init/Kconfig"
 357
 358 menu "Platform support"
 359         depends on PPC64 || CLASSIC32
 360
 361 choice
 362         prompt "Machine type"
 363         default PPC_MULTIPLATFORM
 364
 365 config PPC_MULTIPLATFORM
 366         bool "Generic desktop/server/laptop"
 367         help
 368           Select this option if configuring for an IBM pSeries or
 369           RS/6000 machine, an Apple machine, or a PReP, CHRP,
 370           Maple or Cell-based machine.
 371
 372 config EMBEDDED6xx
 373         bool "Embedded 6xx/7xx/7xxx-based board"
 374         depends on PPC32 && (BROKEN||BROKEN_ON_SMP)
 375
 376 config APUS
 377         bool "Amiga-APUS"
 378         depends on PPC32 && BROKEN
 379         help
 380           Select APUS if configuring for a PowerUP Amiga.
 381           More information is available at:
 382           <http://linux-apus.sourceforge.net/>.
 383 endchoice
 384
 385 config QUICC_ENGINE
 386         bool
 387         depends on PPC_MPC836x || PPC_MPC832x
 388         default y
 389         help
 390           The QUICC Engine (QE) is a new generation of communications
 391           coprocessors on Freescale embedded CPUs (akin to CPM in older chips).
 392           Selecting this option means that you wish to build a kernel
 393           for a machine with a QE coprocessor.
 394
 395 config PPC_PSERIES
 396         depends on PPC_MULTIPLATFORM && PPC64
 397         bool "IBM pSeries & new (POWER5-based) iSeries"
 398         select MPIC
 399         select PPC_I8259
 400         select PPC_RTAS
 401         select RTAS_ERROR_LOGGING
 402         select PPC_UDBG_16550
 403         select PPC_NATIVE
 404         default y
 405
 406 config PPC_ISERIES
 407         bool "IBM Legacy iSeries"
 408         depends on PPC_MULTIPLATFORM && PPC64
 409         select PPC_INDIRECT_IO
 410
 411 config PPC_CHRP
 412         bool "Common Hardware Reference Platform (CHRP) based machines"
 413         depends on PPC_MULTIPLATFORM && PPC32
 414         select MPIC
 415         select PPC_I8259
 416         select PPC_INDIRECT_PCI
 417         select PPC_RTAS
 418         select PPC_MPC106
 419         select PPC_UDBG_16550
 420         select PPC_NATIVE
 421         default y
 422
 423 config PPC_MPC52xx
 424         bool
 425         default n
 426
 427 config PPC_EFIKA
 428         bool "bPlan Efika 5k2. MPC5200B based computer"
 429         depends on PPC_MULTIPLATFORM && PPC32
 430         select PPC_RTAS
 431         select RTAS_PROC
 432         select PPC_MPC52xx
 433         select PPC_NATIVE
 434         default y
 435
 436 config PPC_LITE5200
 437         bool "Freescale Lite5200 Eval Board"
 438         depends on PPC_MULTIPLATFORM && PPC32
 439         select PPC_MPC52xx
 440         default n
 441
 442 config PPC_PMAC
 443         bool "Apple PowerMac based machines"
 444         depends on PPC_MULTIPLATFORM
 445         select MPIC
 446         select PPC_INDIRECT_PCI if PPC32
 447         select PPC_MPC106 if PPC32
 448         select PPC_NATIVE
 449         default y
 450
 451 config PPC_PMAC64
 452         bool
 453         depends on PPC_PMAC && POWER4
 454         select MPIC
 455         select U3_DART
 456         select MPIC_BROKEN_U3
 457         select GENERIC_TBSYNC
 458         select PPC_970_NAP
 459         default y
 460
 461 config PPC_PREP
 462         bool "PowerPC Reference Platform (PReP) based machines"
 463         depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
 464         select MPIC
 465         select PPC_I8259
 466         select PPC_INDIRECT_PCI
 467         select PPC_UDBG_16550
 468         select PPC_NATIVE
 469         default y
 470
 471 config PPC_MAPLE
 472         depends on PPC_MULTIPLATFORM && PPC64
 473         bool "Maple 970FX Evaluation Board"
 474         select MPIC
 475         select U3_DART
 476         select MPIC_BROKEN_U3
 477         select GENERIC_TBSYNC
 478         select PPC_UDBG_16550
 479         select PPC_970_NAP
 480         select PPC_NATIVE
 481         default n
 482         help
 483           This option enables support for the Maple 970FX Evaluation Board.
 484           For more information, refer to <http://www.970eval.com>
 485
 486 config PPC_PASEMI
 487         depends on PPC_MULTIPLATFORM && PPC64
 488         bool "PA Semi SoC-based platforms"
 489         default n
 490         select MPIC
 491         select PPC_UDBG_16550
 492         select GENERIC_TBSYNC
 493         select PPC_NATIVE
 494         help
 495           This option enables support for PA Semi's PWRficient line
 496           of SoC processors, including PA6T-1682M
 497
 498 config PPC_CELL
 499         bool
 500         default n
 501
 502 config PPC_CELL_NATIVE
 503         bool
 504         select PPC_CELL
 505         select PPC_DCR_MMIO
 506         select PPC_OF_PLATFORM_PCI
 507         select PPC_INDIRECT_IO
 508         select PPC_NATIVE
 509         select MPIC
 510         default n
 511
 512 config PPC_IBM_CELL_BLADE
 513         bool "IBM Cell Blade"
 514         depends on PPC_MULTIPLATFORM && PPC64
 515         select PPC_CELL_NATIVE
 516         select PPC_RTAS
 517         select MMIO_NVRAM
 518         select PPC_UDBG_16550
 519         select UDBG_RTAS_CONSOLE
 520
 521 config PPC_PS3
 522         bool "Sony PS3"
 523         depends on PPC_MULTIPLATFORM && PPC64
 524         select PPC_CELL
 525         help
 526           This option enables support for the Sony PS3 game console
 527           and other platforms using the PS3 hypervisor.
 528
 529 config PPC_NATIVE
 530         bool
 531         depends on PPC_MULTIPLATFORM
 532         help
 533           Support for running natively on the hardware, i.e. without
 534           a hypervisor. This option is not user-selectable but should
 535           be selected by all platforms that need it.
 536
 537 config UDBG_RTAS_CONSOLE
 538         bool "RTAS based debug console"
 539         depends on PPC_RTAS
 540         default n
 541
 542 config XICS
 543         depends on PPC_PSERIES
 544         bool
 545         default y
 546
 547 config U3_DART
 548         bool
 549         depends on PPC_MULTIPLATFORM && PPC64
 550         default n
 551
 552 config PPC_RTAS
 553         bool
 554         default n
 555
 556 config RTAS_ERROR_LOGGING
 557         bool
 558         depends on PPC_RTAS
 559         default n
 560
 561 config RTAS_PROC
 562         bool "Proc interface to RTAS"
 563         depends on PPC_RTAS
 564         default y
 565
 566 config RTAS_FLASH
 567         tristate "Firmware flash interface"
 568         depends on PPC64 && RTAS_PROC
 569
 570 config MMIO_NVRAM
 571         bool
 572         default n
 573
 574 config MPIC_BROKEN_U3
 575         bool
 576         depends on PPC_MAPLE
 577         default y
 578
 579 config IBMVIO
 580         depends on PPC_PSERIES || PPC_ISERIES
 581         bool
 582         default y
 583
 584 config IBMEBUS
 585         depends on PPC_PSERIES
 586         bool "Support for GX bus based adapters"
 587         help
 588           Bus device driver for GX bus based adapters.
 589
 590 config PPC_MPC106
 591         bool
 592         default n
 593
 594 config PPC_970_NAP
 595         bool
 596         default n
 597
 598 config PPC_INDIRECT_IO
 599         bool
 600         select GENERIC_IOMAP
 601         default n
 602
 603 config GENERIC_IOMAP
 604         bool
 605         default n
 606
 607 source "drivers/cpufreq/Kconfig"
 608
 609 config CPU_FREQ_PMAC
 610         bool "Support for Apple PowerBooks"
 611         depends on CPU_FREQ && ADB_PMU && PPC32
 612         select CPU_FREQ_TABLE
 613         help
 614           This adds support for frequency switching on Apple PowerBooks,
 615           this currently includes some models of iBook & Titanium
 616           PowerBook.
 617
 618 config CPU_FREQ_PMAC64
 619         bool "Support for some Apple G5s"
 620         depends on CPU_FREQ && PPC64
 621         select CPU_FREQ_TABLE
 622         help
 623           This adds support for frequency switching on Apple iMac G5,
 624           and some of the more recent desktop G5 machines as well.
 625
 626 config PPC601_SYNC_FIX
 627         bool "Workarounds for PPC601 bugs"
 628         depends on 6xx && (PPC_PREP || PPC_PMAC)
 629         help
 630           Some versions of the PPC601 (the first PowerPC chip) have bugs which
 631           mean that extra synchronization instructions are required near
 632           certain instructions, typically those that make major changes to the
 633           CPU state.  These extra instructions reduce performance slightly.
 634           If you say N here, these extra instructions will not be included,
 635           resulting in a kernel which will run faster but may not run at all
 636           on some systems with the PPC601 chip.
 637
 638           If in doubt, say Y here.
 639
 640 config TAU
 641         bool "On-chip CPU temperature sensor support"
 642         depends on 6xx
 643         help
 644           G3 and G4 processors have an on-chip temperature sensor called the
 645           'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
 646           temperature within 2-4 degrees Celsius. This option shows the current
 647           on-die temperature in /proc/cpuinfo if the cpu supports it.
 648
 649           Unfortunately, on some chip revisions, this sensor is very inaccurate
 650           and in many cases, does not work at all, so don't assume the cpu
 651           temp is actually what /proc/cpuinfo says it is.
 652
 653 config TAU_INT
 654         bool "Interrupt driven TAU driver (DANGEROUS)"
 655         depends on TAU
 656         ---help---
 657           The TAU supports an interrupt driven mode which causes an interrupt
 658           whenever the temperature goes out of range. This is the fastest way
 659           to get notified the temp has exceeded a range. With this option off,
 660           a timer is used to re-check the temperature periodically.
 661
 662           However, on some cpus it appears that the TAU interrupt hardware
 663           is buggy and can cause a situation which would lead unexplained hard
 664           lockups.
 665
 666           Unless you are extending the TAU driver, or enjoy kernel/hardware
 667           debugging, leave this option off.
 668
 669 config TAU_AVERAGE
 670         bool "Average high and low temp"
 671         depends on TAU
 672         ---help---
 673           The TAU hardware can compare the temperature to an upper and lower
 674           bound.  The default behavior is to show both the upper and lower
 675           bound in /proc/cpuinfo. If the range is large, the temperature is
 676           either changing a lot, or the TAU hardware is broken (likely on some
 677           G4's). If the range is small (around 4 degrees), the temperature is
 678           relatively stable.  If you say Y here, a single temperature value,
 679           halfway between the upper and lower bounds, will be reported in
 680           /proc/cpuinfo.
 681
 682           If in doubt, say N here.
 683
 684 endmenu
 685
 686 source arch/powerpc/platforms/embedded6xx/Kconfig
 687 source arch/powerpc/platforms/4xx/Kconfig
 688 source arch/powerpc/platforms/82xx/Kconfig
 689 source arch/powerpc/platforms/83xx/Kconfig
 690 source arch/powerpc/platforms/85xx/Kconfig
 691 source arch/powerpc/platforms/86xx/Kconfig
 692 source arch/powerpc/platforms/8xx/Kconfig
 693 source arch/powerpc/platforms/cell/Kconfig
 694 source arch/powerpc/platforms/ps3/Kconfig
 695
 696 menu "Kernel options"
 697
 698 config HIGHMEM
 699         bool "High memory support"
 700         depends on PPC32
 701
 702 source kernel/Kconfig.hz
 703 source kernel/Kconfig.preempt
 704 source "fs/Kconfig.binfmt"
 705
 706 # We optimistically allocate largepages from the VM, so make the limit
 707 # large enough (16MB). This badly named config option is actually
 708 # max order + 1
 709 config FORCE_MAX_ZONEORDER
 710         int
 711         depends on PPC64
 712         default "9" if PPC_64K_PAGES
 713         default "13"
 714
 715 config MATH_EMULATION
 716         bool "Math emulation"
 717         depends on 4xx || 8xx || E200 || E500
 718         ---help---
 719           Some PowerPC chips designed for embedded applications do not have
 720           a floating-point unit and therefore do not implement the
 721           floating-point instructions in the PowerPC instruction set.  If you
 722           say Y here, the kernel will include code to emulate a floating-point
 723           unit, which will allow programs that use floating-point
 724           instructions to run.
 725
 726 config IOMMU_VMERGE
 727         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 728         depends on EXPERIMENTAL && PPC64
 729         default n
 730         help
 731           Cause IO segments sent to a device for DMA to be merged virtually
 732           by the IOMMU when they happen to have been allocated contiguously.
 733           This doesn't add pressure to the IOMMU allocator. However, some
 734           drivers don't support getting large merged segments coming back
 735           from *_map_sg(). Say Y if you know the drivers you are using are
 736           properly handling this case.
 737
 738 config HOTPLUG_CPU
 739         bool "Support for enabling/disabling CPUs"
 740         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 741         ---help---
 742           Say Y here to be able to disable and re-enable individual
 743           CPUs at runtime on SMP machines.
 744
 745           Say N if you are unsure.
 746
 747 config ARCH_ENABLE_MEMORY_HOTPLUG
 748         def_bool y
 749
 750 config KEXEC
 751         bool "kexec system call (EXPERIMENTAL)"
 752         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 753         help
 754           kexec is a system call that implements the ability to shutdown your
 755           current kernel, and to start another kernel.  It is like a reboot
 756           but it is independent of the system firmware.   And like a reboot
 757           you can start any kernel with it, not just Linux.
 758
 759           The name comes from the similarity to the exec system call.
 760
 761           It is an ongoing process to be certain the hardware in a machine
 762           is properly shutdown, so do not be surprised if this code does not
 763           initially work for you.  It may help to enable device hotplugging
 764           support.  As of this writing the exact hardware interface is
 765           strongly in flux, so no good recommendation can be made.
 766
 767 config CRASH_DUMP
 768         bool "Build a kdump crash kernel (EXPERIMENTAL)"
 769         depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
 770         help
 771           Build a kernel suitable for use as a kdump capture kernel.
 772           The kernel will be linked at a different address than normal, and
 773           so can only be used for Kdump.
 774
 775           Don't change this unless you know what you are doing.
 776
 777 config EMBEDDEDBOOT
 778         bool
 779         depends on 8xx || 8260
 780         default y
 781
 782 config PC_KEYBOARD
 783         bool "PC PS/2 style Keyboard"
 784         depends on 4xx || CPM2
 785
 786 config PPCBUG_NVRAM
 787         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 788         default y if PPC_PREP
 789
 790 config IRQ_ALL_CPUS
 791         bool "Distribute interrupts on all CPUs by default"
 792         depends on SMP && !MV64360
 793         help
 794           This option gives the kernel permission to distribute IRQs across
 795           multiple CPUs.  Saying N here will route all IRQs to the first
 796           CPU.  Generally saying Y is safe, although some problems have been
 797           reported with SMP Power Macintoshes with this option enabled.
 798
 799 source "arch/powerpc/platforms/pseries/Kconfig"
 800
 801 config NUMA
 802         bool "NUMA support"
 803         depends on PPC64
 804         default y if SMP && PPC_PSERIES
 805
 806 config NODES_SHIFT
 807         int
 808         default "4"
 809         depends on NEED_MULTIPLE_NODES
 810
 811 config ARCH_SELECT_MEMORY_MODEL
 812         def_bool y
 813         depends on PPC64
 814
 815 config ARCH_FLATMEM_ENABLE
 816         def_bool y
 817         depends on (PPC64 && !NUMA) || PPC32
 818
 819 config ARCH_SPARSEMEM_ENABLE
 820         def_bool y
 821         depends on PPC64
 822
 823 config ARCH_SPARSEMEM_DEFAULT
 824         def_bool y
 825         depends on (SMP && PPC_PSERIES) || PPC_CELL
 826
 827 config ARCH_POPULATES_NODE_MAP
 828         def_bool y
 829
 830 source "mm/Kconfig"
 831
 832 config ARCH_MEMORY_PROBE
 833         def_bool y
 834         depends on MEMORY_HOTPLUG
 835
 836 # Some NUMA nodes have memory ranges that span
 837 # other nodes.  Even though a pfn is valid and
 838 # between a node's start and end pfns, it may not
 839 # reside on that node.  See memmap_init_zone()
 840 # for details.
 841 config NODES_SPAN_OTHER_NODES
 842         def_bool y
 843         depends on NEED_MULTIPLE_NODES
 844
 845 config PPC_64K_PAGES
 846         bool "64k page size"
 847         depends on PPC64
 848         help
 849           This option changes the kernel logical page size to 64k. On machines
 850           without processor support for 64k pages, the kernel will simulate
 851           them by loading each individual 4k page on demand transparently,
 852           while on hardware with such support, it will be used to map
 853           normal application pages.
 854
 855 config SCHED_SMT
 856         bool "SMT (Hyperthreading) scheduler support"
 857         depends on PPC64 && SMP
 858         help
 859           SMT scheduler support improves the CPU scheduler's decision making
 860           when dealing with POWER5 cpus at a cost of slightly increased
 861           overhead in some places. If unsure say N here.
 862
 863 config PROC_DEVICETREE
 864         bool "Support for device tree in /proc"
 865         depends on PROC_FS
 866         help
 867           This option adds a device-tree directory under /proc which contains
 868           an image of the device tree that the kernel copies from Open
 869           Firmware or other boot firmware. If unsure, say Y here.
 870
 871 source "arch/powerpc/platforms/prep/Kconfig"
 872
 873 config CMDLINE_BOOL
 874         bool "Default bootloader kernel arguments"
 875
 876 config CMDLINE
 877         string "Initial kernel command string"
 878         depends on CMDLINE_BOOL
 879         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 880         help
 881           On some platforms, there is currently no way for the boot loader to
 882           pass arguments to the kernel. For these platforms, you can supply
 883           some command-line options at build time by entering them here.  In
 884           most cases you will need to specify the root device here.
 885
 886 if !44x || BROKEN
 887 source kernel/power/Kconfig
 888 endif
 889
 890 config SECCOMP
 891         bool "Enable seccomp to safely compute untrusted bytecode"
 892         depends on PROC_FS
 893         default y
 894         help
 895           This kernel feature is useful for number crunching applications
 896           that may need to compute untrusted bytecode during their
 897           execution. By using pipes or other transports made available to
 898           the process as file descriptors supporting the read/write
 899           syscalls, it's possible to isolate those applications in
 900           their own address space using seccomp. Once seccomp is
 901           enabled via /proc/<pid>/seccomp, it cannot be disabled
 902           and the task is only allowed to execute a few safe syscalls
 903           defined by each seccomp mode.
 904
 905           If unsure, say Y. Only embedded should say N here.
 906
 907 endmenu
 908
 909 config ISA_DMA_API
 910         bool
 911         default y
 912
 913 menu "Bus options"
 914
 915 config ISA
 916         bool "Support for ISA-bus hardware"
 917         depends on PPC_PREP || PPC_CHRP
 918         select PPC_I8259
 919         help
 920           Find out whether you have ISA slots on your motherboard.  ISA is the
 921           name of a bus system, i.e. the way the CPU talks to the other stuff
 922           inside your box.  If you have an Apple machine, say N here; if you
 923           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 924           you have an embedded board, consult your board documentation.
 925
 926 config GENERIC_ISA_DMA
 927         bool
 928         depends on PPC64 || POWER4 || 6xx && !CPM2
 929         default y
 930
 931 config MPIC
 932         bool
 933         default n
 934
 935 config MPIC_WEIRD
 936         bool
 937         default n
 938
 939 config PPC_I8259
 940         bool
 941         default n
 942
 943 config PPC_INDIRECT_PCI
 944         bool
 945         depends on PCI
 946         default y if 40x || 44x
 947         default n
 948
 949 config EISA
 950         bool
 951
 952 config SBUS
 953         bool
 954
 955 config FSL_SOC
 956         bool
 957
 958 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 959 config MCA
 960         bool
 961
 962 config PCI
 963         bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
 964                 || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES) || MPC7448HPC2 || PPC_PS3
 965         default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
 966                 && !PPC_85xx && !PPC_86xx
 967         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
 968         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 969         help
 970           Find out whether your system includes a PCI bus. PCI is the name of
 971           a bus system, i.e. the way the CPU talks to the other stuff inside
 972           your box.  If you say Y here, the kernel will include drivers and
 973           infrastructure code to support PCI bus devices.
 974
 975 config PCI_DOMAINS
 976         bool
 977         default PCI
 978
 979 config PCI_QSPAN
 980         bool "QSpan PCI"
 981         depends on !4xx && !CPM2 && 8xx
 982         select PPC_I8259
 983         help
 984           Say Y here if you have a system based on a Motorola 8xx-series
 985           embedded processor with a QSPAN PCI interface, otherwise say N.
 986
 987 config PCI_8260
 988         bool
 989         depends on PCI && 8260
 990         select PPC_INDIRECT_PCI
 991         default y
 992
 993 config 8260_PCI9
 994         bool "Enable workaround for MPC826x erratum PCI 9"
 995         depends on PCI_8260 && !ADS8272
 996         default y
 997
 998 choice
 999         prompt "IDMA channel for PCI 9 workaround"
1000         depends on 8260_PCI9
1001
1002 config 8260_PCI9_IDMA1
1003         bool "IDMA1"
1004
1005 config 8260_PCI9_IDMA2
1006         bool "IDMA2"
1007
1008 config 8260_PCI9_IDMA3
1009         bool "IDMA3"
1010
1011 config 8260_PCI9_IDMA4
1012         bool "IDMA4"
1013
1014 endchoice
1015
1016 source "drivers/pci/pcie/Kconfig"
1017
1018 source "drivers/pci/Kconfig"
1019
1020 source "drivers/pcmcia/Kconfig"
1021
1022 source "drivers/pci/hotplug/Kconfig"
1023
1024 endmenu
1025
1026 menu "Advanced setup"
1027         depends on PPC32
1028
1029 config ADVANCED_OPTIONS
1030         bool "Prompt for advanced kernel configuration options"
1031         help
1032           This option will enable prompting for a variety of advanced kernel
1033           configuration options.  These options can cause the kernel to not
1034           work if they are set incorrectly, but can be used to optimize certain
1035           aspects of kernel memory management.
1036
1037           Unless you know what you are doing, say N here.
1038
1039 comment "Default settings for advanced configuration options are used"
1040         depends on !ADVANCED_OPTIONS
1041
1042 config HIGHMEM_START_BOOL
1043         bool "Set high memory pool address"
1044         depends on ADVANCED_OPTIONS && HIGHMEM
1045         help
1046           This option allows you to set the base address of the kernel virtual
1047           area used to map high memory pages.  This can be useful in
1048           optimizing the layout of kernel virtual memory.
1049
1050           Say N here unless you know what you are doing.
1051
1052 config HIGHMEM_START
1053         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
1054         default "0xfe000000"
1055
1056 config LOWMEM_SIZE_BOOL
1057         bool "Set maximum low memory"
1058         depends on ADVANCED_OPTIONS
1059         help
1060           This option allows you to set the maximum amount of memory which
1061           will be used as "low memory", that is, memory which the kernel can
1062           access directly, without having to set up a kernel virtual mapping.
1063           This can be useful in optimizing the layout of kernel virtual
1064           memory.
1065
1066           Say N here unless you know what you are doing.
1067
1068 config LOWMEM_SIZE
1069         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
1070         default "0x30000000"
1071
1072 config KERNEL_START_BOOL
1073         bool "Set custom kernel base address"
1074         depends on ADVANCED_OPTIONS
1075         help
1076           This option allows you to set the kernel virtual address at which
1077           the kernel will map low memory (the kernel image will be linked at
1078           this address).  This can be useful in optimizing the virtual memory
1079           layout of the system.
1080
1081           Say N here unless you know what you are doing.
1082
1083 config KERNEL_START
1084         hex "Virtual address of kernel base" if KERNEL_START_BOOL
1085         default "0xc0000000"
1086
1087 config TASK_SIZE_BOOL
1088         bool "Set custom user task size"
1089         depends on ADVANCED_OPTIONS
1090         help
1091           This option allows you to set the amount of virtual address space
1092           allocated to user tasks.  This can be useful in optimizing the
1093           virtual memory layout of the system.
1094
1095           Say N here unless you know what you are doing.
1096
1097 config TASK_SIZE
1098         hex "Size of user task space" if TASK_SIZE_BOOL
1099         default "0x80000000"
1100
1101 config CONSISTENT_START_BOOL
1102         bool "Set custom consistent memory pool address"
1103         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1104         help
1105           This option allows you to set the base virtual address
1106           of the consistent memory pool.  This pool of virtual
1107           memory is used to make consistent memory allocations.
1108
1109 config CONSISTENT_START
1110         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
1111         default "0xff100000" if NOT_COHERENT_CACHE
1112
1113 config CONSISTENT_SIZE_BOOL
1114         bool "Set custom consistent memory pool size"
1115         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1116         help
1117           This option allows you to set the size of the
1118           consistent memory pool.  This pool of virtual memory
1119           is used to make consistent memory allocations.
1120
1121 config CONSISTENT_SIZE
1122         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1123         default "0x00200000" if NOT_COHERENT_CACHE
1124
1125 config BOOT_LOAD_BOOL
1126         bool "Set the boot link/load address"
1127         depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
1128         help
1129           This option allows you to set the initial load address of the zImage
1130           or zImage.initrd file.  This can be useful if you are on a board
1131           which has a small amount of memory.
1132
1133           Say N here unless you know what you are doing.
1134
1135 config BOOT_LOAD
1136         hex "Link/load address for booting" if BOOT_LOAD_BOOL
1137         default "0x00400000" if 40x || 8xx || 8260
1138         default "0x01000000" if 44x
1139         default "0x00800000"
1140
1141 config PIN_TLB
1142         bool "Pinned Kernel TLBs (860 ONLY)"
1143         depends on ADVANCED_OPTIONS && 8xx
1144 endmenu
1145
1146 if PPC64
1147 config KERNEL_START
1148         hex
1149         default "0xc000000000000000"
1150 endif
1151
1152 source "net/Kconfig"
1153
1154 source "drivers/Kconfig"
1155
1156 source "fs/Kconfig"
1157
1158 # XXX source "arch/ppc/8xx_io/Kconfig"
1159
1160 # XXX source "arch/ppc/8260_io/Kconfig"
1161
1162 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1163
1164 source "arch/powerpc/platforms/iseries/Kconfig"
1165
1166 source "lib/Kconfig"
1167
1168 menu "Instrumentation Support"
1169         depends on EXPERIMENTAL
1170
1171 source "arch/powerpc/oprofile/Kconfig"
1172
1173 config KPROBES
1174         bool "Kprobes (EXPERIMENTAL)"
1175         depends on PPC64 && KALLSYMS && EXPERIMENTAL && MODULES
1176         help
1177           Kprobes allows you to trap at almost any kernel address and
1178           execute a callback function.  register_kprobe() establishes
1179           a probepoint and specifies the callback.  Kprobes is useful
1180           for kernel debugging, non-intrusive instrumentation and testing.
1181           If in doubt, say "N".
1182 endmenu
1183
1184 source "arch/powerpc/Kconfig.debug"
1185
1186 source "security/Kconfig"
1187
1188 config KEYS_COMPAT
1189         bool
1190         depends on COMPAT && KEYS
1191         default y
1192
1193 source "crypto/Kconfig"