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