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