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 UID16
  30         bool
  31
  32 config GENERIC_HARDIRQS
  33         bool
  34         default y
  35
  36 config RWSEM_GENERIC_SPINLOCK
  37         bool
  38
  39 config RWSEM_XCHGADD_ALGORITHM
  40         bool
  41         default y
  42
  43 config GENERIC_CALIBRATE_DELAY
  44         bool
  45         default y
  46
  47 config PPC
  48         bool
  49         default y
  50
  51 config EARLY_PRINTK
  52         bool
  53         default y if PPC64
  54
  55 config COMPAT
  56         bool
  57         default y if PPC64
  58
  59 config SYSVIPC_COMPAT
  60         bool
  61         depends on COMPAT && SYSVIPC
  62         default y
  63
  64 # All PPC32s use generic nvram driver through ppc_md
  65 config GENERIC_NVRAM
  66         bool
  67         default y if PPC32
  68
  69 config SCHED_NO_NO_OMIT_FRAME_POINTER
  70         bool
  71         default y
  72
  73 config ARCH_MAY_HAVE_PC_FDC
  74         bool
  75         default y
  76
  77 menu "Processor support"
  78 choice
  79         prompt "Processor Type"
  80         depends on PPC32
  81         default 6xx
  82
  83 config 6xx
  84         bool "6xx/7xx/74xx"
  85         select PPC_FPU
  86         help
  87           There are four families of PowerPC chips supported.  The more common
  88           types (601, 603, 604, 740, 750, 7400), the Motorola embedded
  89           versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
  90           embedded versions (403 and 405) and the high end 64 bit Power
  91           processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
  92
  93           Unless you are building a kernel for one of the embedded processor
  94           systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
  95           Note that the kernel runs in 32-bit mode even on 64-bit chips.
  96
  97 config PPC_52xx
  98         bool "Freescale 52xx"
  99
 100 config PPC_82xx
 101         bool "Freescale 82xx"
 102
 103 config PPC_83xx
 104         bool "Freescale 83xx"
 105
 106 config 40x
 107         bool "AMCC 40x"
 108
 109 config 44x
 110         bool "AMCC 44x"
 111
 112 config 8xx
 113         bool "Freescale 8xx"
 114
 115 config E200
 116         bool "Freescale e200"
 117
 118 config E500
 119         bool "Freescale e500"
 120 endchoice
 121
 122 config POWER4_ONLY
 123         bool "Optimize for POWER4"
 124         depends on PPC64
 125         default n
 126         ---help---
 127           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
 128           The resulting binary will not work on POWER3 or RS64 processors
 129           when compiled with binutils 2.15 or later.
 130
 131 config POWER3
 132         bool
 133         depends on PPC64
 134         default y if !POWER4_ONLY
 135
 136 config POWER4
 137         depends on PPC64
 138         def_bool y
 139
 140 config PPC_FPU
 141         bool
 142         default y if PPC64
 143
 144 config BOOKE
 145         bool
 146         depends on E200 || E500
 147         default y
 148
 149 config FSL_BOOKE
 150         bool
 151         depends on E200 || E500
 152         default y
 153
 154 config PTE_64BIT
 155         bool
 156         depends on 44x || E500
 157         default y if 44x
 158         default y if E500 && PHYS_64BIT
 159
 160 config PHYS_64BIT
 161         bool 'Large physical address support' if E500
 162         depends on 44x || E500
 163         default y if 44x
 164         ---help---
 165           This option enables kernel support for larger than 32-bit physical
 166           addresses.  This features is not be available on all e500 cores.
 167
 168           If in doubt, say N here.
 169
 170 config ALTIVEC
 171         bool "AltiVec Support"
 172         depends on 6xx || POWER4
 173         ---help---
 174           This option enables kernel support for the Altivec extensions to the
 175           PowerPC processor. The kernel currently supports saving and restoring
 176           altivec registers, and turning on the 'altivec enable' bit so user
 177           processes can execute altivec instructions.
 178
 179           This option is only usefully if you have a processor that supports
 180           altivec (G4, otherwise known as 74xx series), but does not have
 181           any affect on a non-altivec cpu (it does, however add code to the
 182           kernel).
 183
 184           If in doubt, say Y here.
 185
 186 config SPE
 187         bool "SPE Support"
 188         depends on E200 || E500
 189         ---help---
 190           This option enables kernel support for the Signal Processing
 191           Extensions (SPE) to the PowerPC processor. The kernel currently
 192           supports saving and restoring SPE registers, and turning on the
 193           'spe enable' bit so user processes can execute SPE instructions.
 194
 195           This option is only useful if you have a processor that supports
 196           SPE (e500, otherwise known as 85xx series), but does not have any
 197           effect on a non-spe cpu (it does, however add code to the kernel).
 198
 199           If in doubt, say Y here.
 200
 201 config PPC_STD_MMU
 202         bool
 203         depends on 6xx || POWER3 || POWER4 || PPC64
 204         default y
 205
 206 config PPC_STD_MMU_32
 207         def_bool y
 208         depends on PPC_STD_MMU && PPC32
 209
 210 config SMP
 211         depends on PPC_STD_MMU
 212         bool "Symmetric multi-processing support"
 213         ---help---
 214           This enables support for systems with more than one CPU. If you have
 215           a system with only one CPU, say N. If you have a system with more
 216           than one CPU, say Y.  Note that the kernel does not currently
 217           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 218           since they have inadequate hardware support for multiprocessor
 219           operation.
 220
 221           If you say N here, the kernel will run on single and multiprocessor
 222           machines, but will use only one CPU of a multiprocessor machine. If
 223           you say Y here, the kernel will run on single-processor machines.
 224           On a single-processor machine, the kernel will run faster if you say
 225           N here.
 226
 227           If you don't know what to do here, say N.
 228
 229 config NR_CPUS
 230         int "Maximum number of CPUs (2-32)"
 231         range 2 128
 232         depends on SMP
 233         default "32" if PPC64
 234         default "4"
 235
 236 config NOT_COHERENT_CACHE
 237         bool
 238         depends on 4xx || 8xx || E200
 239         default y
 240 endmenu
 241
 242 source "init/Kconfig"
 243
 244 menu "Platform support"
 245         depends on PPC64 || 6xx
 246
 247 choice
 248         prompt "Machine type"
 249         default PPC_MULTIPLATFORM
 250
 251 config PPC_MULTIPLATFORM
 252         bool "Generic desktop/server/laptop"
 253         help
 254           Select this option if configuring for an IBM pSeries or
 255           RS/6000 machine, an Apple machine, or a PReP, CHRP,
 256           Maple or Cell-based machine.
 257
 258 config PPC_ISERIES
 259         bool "IBM Legacy iSeries"
 260         depends on PPC64
 261
 262 config EMBEDDED6xx
 263         bool "Embedded 6xx/7xx/7xxx-based board"
 264         depends on PPC32
 265
 266 config APUS
 267         bool "Amiga-APUS"
 268         depends on PPC32 && BROKEN
 269         help
 270           Select APUS if configuring for a PowerUP Amiga.
 271           More information is available at:
 272           <http://linux-apus.sourceforge.net/>.
 273 endchoice
 274
 275 config PPC_PSERIES
 276         depends on PPC_MULTIPLATFORM && PPC64
 277         bool "  IBM pSeries & new (POWER5-based) iSeries"
 278         select PPC_I8259
 279         select PPC_RTAS
 280         select RTAS_ERROR_LOGGING
 281         default y
 282
 283 config PPC_CHRP
 284         bool "  Common Hardware Reference Platform (CHRP) based machines"
 285         depends on PPC_MULTIPLATFORM && PPC32
 286         select PPC_I8259
 287         select PPC_INDIRECT_PCI
 288         select PPC_RTAS
 289         select PPC_MPC106
 290         default y
 291
 292 config PPC_PMAC
 293         bool "  Apple PowerMac based machines"
 294         depends on PPC_MULTIPLATFORM
 295         select PPC_INDIRECT_PCI if PPC32
 296         select PPC_MPC106 if PPC32
 297         default y
 298
 299 config PPC_PMAC64
 300         bool
 301         depends on PPC_PMAC && POWER4
 302         select U3_DART
 303         select GENERIC_TBSYNC
 304         default y
 305
 306 config PPC_PREP
 307         bool "  PowerPC Reference Platform (PReP) based machines"
 308         depends on PPC_MULTIPLATFORM && PPC32
 309         select PPC_I8259
 310         select PPC_INDIRECT_PCI
 311         default y
 312
 313 config PPC_MAPLE
 314         depends on PPC_MULTIPLATFORM && PPC64
 315         bool "  Maple 970FX Evaluation Board"
 316         select U3_DART
 317         select MPIC_BROKEN_U3
 318         select GENERIC_TBSYNC
 319         default n
 320         help
 321           This option enables support for the Maple 970FX Evaluation Board.
 322           For more informations, refer to <http://www.970eval.com>
 323
 324 config PPC_CELL
 325         bool "  Cell Broadband Processor Architecture"
 326         depends on PPC_MULTIPLATFORM && PPC64
 327         select PPC_RTAS
 328         select MMIO_NVRAM
 329
 330 config PPC_OF
 331         bool
 332         depends on PPC_MULTIPLATFORM    # for now
 333         default y
 334
 335 config XICS
 336         depends on PPC_PSERIES
 337         bool
 338         default y
 339
 340 config U3_DART
 341         bool
 342         depends on PPC_MULTIPLATFORM && PPC64
 343         default n
 344
 345 config MPIC
 346         depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
 347         bool
 348         default y
 349
 350 config PPC_RTAS
 351         bool
 352         default n
 353
 354 config RTAS_ERROR_LOGGING
 355         bool
 356         depends on PPC_RTAS
 357         default n
 358
 359 config RTAS_PROC
 360         bool "Proc interface to RTAS"
 361         depends on PPC_RTAS
 362         default y
 363
 364 config RTAS_FLASH
 365         tristate "Firmware flash interface"
 366         depends on PPC64 && RTAS_PROC
 367
 368 config MMIO_NVRAM
 369         bool
 370         default n
 371
 372 config MPIC_BROKEN_U3
 373         bool
 374         depends on PPC_MAPLE
 375         default y
 376
 377 config CELL_IIC
 378         depends on PPC_CELL
 379         bool
 380         default y
 381
 382 config IBMVIO
 383         depends on PPC_PSERIES || PPC_ISERIES
 384         bool
 385         default y
 386
 387 config PPC_MPC106
 388         bool
 389         default n
 390
 391 config GENERIC_TBSYNC
 392         bool
 393         default y if CONFIG_PPC32 && CONFIG_SMP
 394         default n
 395
 396 source "drivers/cpufreq/Kconfig"
 397
 398 config CPU_FREQ_PMAC
 399         bool "Support for Apple PowerBooks"
 400         depends on CPU_FREQ && ADB_PMU && PPC32
 401         select CPU_FREQ_TABLE
 402         help
 403           This adds support for frequency switching on Apple PowerBooks,
 404           this currently includes some models of iBook & Titanium
 405           PowerBook.
 406
 407 config PPC601_SYNC_FIX
 408         bool "Workarounds for PPC601 bugs"
 409         depends on 6xx && (PPC_PREP || PPC_PMAC)
 410         help
 411           Some versions of the PPC601 (the first PowerPC chip) have bugs which
 412           mean that extra synchronization instructions are required near
 413           certain instructions, typically those that make major changes to the
 414           CPU state.  These extra instructions reduce performance slightly.
 415           If you say N here, these extra instructions will not be included,
 416           resulting in a kernel which will run faster but may not run at all
 417           on some systems with the PPC601 chip.
 418
 419           If in doubt, say Y here.
 420
 421 config TAU
 422         bool "Thermal Management Support"
 423         depends on 6xx
 424         help
 425           G3 and G4 processors have an on-chip temperature sensor called the
 426           'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
 427           temperature within 2-4 degrees Celsius. This option shows the current
 428           on-die temperature in /proc/cpuinfo if the cpu supports it.
 429
 430           Unfortunately, on some chip revisions, this sensor is very inaccurate
 431           and in some cases, does not work at all, so don't assume the cpu
 432           temp is actually what /proc/cpuinfo says it is.
 433
 434 config TAU_INT
 435         bool "Interrupt driven TAU driver (DANGEROUS)"
 436         depends on TAU
 437         ---help---
 438           The TAU supports an interrupt driven mode which causes an interrupt
 439           whenever the temperature goes out of range. This is the fastest way
 440           to get notified the temp has exceeded a range. With this option off,
 441           a timer is used to re-check the temperature periodically.
 442
 443           However, on some cpus it appears that the TAU interrupt hardware
 444           is buggy and can cause a situation which would lead unexplained hard
 445           lockups.
 446
 447           Unless you are extending the TAU driver, or enjoy kernel/hardware
 448           debugging, leave this option off.
 449
 450 config TAU_AVERAGE
 451         bool "Average high and low temp"
 452         depends on TAU
 453         ---help---
 454           The TAU hardware can compare the temperature to an upper and lower
 455           bound.  The default behavior is to show both the upper and lower
 456           bound in /proc/cpuinfo. If the range is large, the temperature is
 457           either changing a lot, or the TAU hardware is broken (likely on some
 458           G4's). If the range is small (around 4 degrees), the temperature is
 459           relatively stable.  If you say Y here, a single temperature value,
 460           halfway between the upper and lower bounds, will be reported in
 461           /proc/cpuinfo.
 462
 463           If in doubt, say N here.
 464 endmenu
 465
 466 source arch/powerpc/platforms/embedded6xx/Kconfig
 467 source arch/powerpc/platforms/4xx/Kconfig
 468 source arch/powerpc/platforms/85xx/Kconfig
 469 source arch/powerpc/platforms/8xx/Kconfig
 470
 471 menu "Kernel options"
 472
 473 config HIGHMEM
 474         bool "High memory support"
 475         depends on PPC32
 476
 477 source kernel/Kconfig.hz
 478 source kernel/Kconfig.preempt
 479 source "fs/Kconfig.binfmt"
 480
 481 # We optimistically allocate largepages from the VM, so make the limit
 482 # large enough (16MB). This badly named config option is actually
 483 # max order + 1
 484 config FORCE_MAX_ZONEORDER
 485         int
 486         depends on PPC64
 487         default "13"
 488
 489 config MATH_EMULATION
 490         bool "Math emulation"
 491         depends on 4xx || 8xx || E200 || E500
 492         ---help---
 493           Some PowerPC chips designed for embedded applications do not have
 494           a floating-point unit and therefore do not implement the
 495           floating-point instructions in the PowerPC instruction set.  If you
 496           say Y here, the kernel will include code to emulate a floating-point
 497           unit, which will allow programs that use floating-point
 498           instructions to run.
 499
 500 config IOMMU_VMERGE
 501         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 502         depends on EXPERIMENTAL && PPC64
 503         default n
 504         help
 505           Cause IO segments sent to a device for DMA to be merged virtually
 506           by the IOMMU when they happen to have been allocated contiguously.
 507           This doesn't add pressure to the IOMMU allocator. However, some
 508           drivers don't support getting large merged segments coming back
 509           from *_map_sg(). Say Y if you know the drivers you are using are
 510           properly handling this case.
 511
 512 config HOTPLUG_CPU
 513         bool "Support for enabling/disabling CPUs"
 514         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 515         ---help---
 516           Say Y here to be able to disable and re-enable individual
 517           CPUs at runtime on SMP machines.
 518
 519           Say N if you are unsure.
 520
 521 config KEXEC
 522         bool "kexec system call (EXPERIMENTAL)"
 523         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 524         help
 525           kexec is a system call that implements the ability to shutdown your
 526           current kernel, and to start another kernel.  It is like a reboot
 527           but it is indepedent of the system firmware.   And like a reboot
 528           you can start any kernel with it, not just Linux.
 529
 530           The name comes from the similiarity to the exec system call.
 531
 532           It is an ongoing process to be certain the hardware in a machine
 533           is properly shutdown, so do not be surprised if this code does not
 534           initially work for you.  It may help to enable device hotplugging
 535           support.  As of this writing the exact hardware interface is
 536           strongly in flux, so no good recommendation can be made.
 537
 538 config EMBEDDEDBOOT
 539         bool
 540         depends on 8xx || 8260
 541         default y
 542
 543 config PC_KEYBOARD
 544         bool "PC PS/2 style Keyboard"
 545         depends on 4xx || CPM2
 546
 547 config PPCBUG_NVRAM
 548         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 549         default y if PPC_PREP
 550
 551 config IRQ_ALL_CPUS
 552         bool "Distribute interrupts on all CPUs by default"
 553         depends on SMP && !MV64360
 554         help
 555           This option gives the kernel permission to distribute IRQs across
 556           multiple CPUs.  Saying N here will route all IRQs to the first
 557           CPU.  Generally saying Y is safe, although some problems have been
 558           reported with SMP Power Macintoshes with this option enabled.
 559
 560 source "arch/powerpc/platforms/pseries/Kconfig"
 561
 562 config NUMA
 563         bool "NUMA support"
 564         depends on PPC64
 565         default y if SMP && PPC_PSERIES
 566
 567 config ARCH_SELECT_MEMORY_MODEL
 568         def_bool y
 569         depends on PPC64
 570
 571 config ARCH_FLATMEM_ENABLE
 572        def_bool y
 573        depends on PPC64 && !NUMA
 574
 575 config ARCH_DISCONTIGMEM_ENABLE
 576         def_bool y
 577         depends on SMP && PPC_PSERIES
 578
 579 config ARCH_DISCONTIGMEM_DEFAULT
 580         def_bool y
 581         depends on ARCH_DISCONTIGMEM_ENABLE
 582
 583 config ARCH_SPARSEMEM_ENABLE
 584         def_bool y
 585         depends on ARCH_DISCONTIGMEM_ENABLE
 586
 587 source "mm/Kconfig"
 588
 589 config HAVE_ARCH_EARLY_PFN_TO_NID
 590         def_bool y
 591         depends on NEED_MULTIPLE_NODES
 592
 593 # Some NUMA nodes have memory ranges that span
 594 # other nodes.  Even though a pfn is valid and
 595 # between a node's start and end pfns, it may not
 596 # reside on that node.
 597 #
 598 # This is a relatively temporary hack that should
 599 # be able to go away when sparsemem is fully in
 600 # place
 601
 602 config NODES_SPAN_OTHER_NODES
 603         def_bool y
 604         depends on NEED_MULTIPLE_NODES
 605
 606 config PPC_64K_PAGES
 607         bool "64k page size"
 608         depends on PPC64
 609         help
 610           This option changes the kernel logical page size to 64k. On machines
 611           without processor support for 64k pages, the kernel will simulate
 612           them by loading each individual 4k page on demand transparently,
 613           while on hardware with such support, it will be used to map
 614           normal application pages.
 615
 616 config SCHED_SMT
 617         bool "SMT (Hyperthreading) scheduler support"
 618         depends on PPC64 && SMP
 619         default off
 620         help
 621           SMT scheduler support improves the CPU scheduler's decision making
 622           when dealing with POWER5 cpus at a cost of slightly increased
 623           overhead in some places. If unsure say N here.
 624
 625 config PROC_DEVICETREE
 626         bool "Support for device tree in /proc"
 627         depends on PROC_FS
 628         help
 629           This option adds a device-tree directory under /proc which contains
 630           an image of the device tree that the kernel copies from Open
 631           Firmware or other boot firmware. If unsure, say Y here.
 632
 633 source "arch/powerpc/platforms/prep/Kconfig"
 634
 635 config CMDLINE_BOOL
 636         bool "Default bootloader kernel arguments"
 637         depends on !PPC_ISERIES
 638
 639 config CMDLINE
 640         string "Initial kernel command string"
 641         depends on CMDLINE_BOOL
 642         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 643         help
 644           On some platforms, there is currently no way for the boot loader to
 645           pass arguments to the kernel. For these platforms, you can supply
 646           some command-line options at build time by entering them here.  In
 647           most cases you will need to specify the root device here.
 648
 649 if !44x || BROKEN
 650 source kernel/power/Kconfig
 651 endif
 652
 653 config SECCOMP
 654         bool "Enable seccomp to safely compute untrusted bytecode"
 655         depends on PROC_FS
 656         default y
 657         help
 658           This kernel feature is useful for number crunching applications
 659           that may need to compute untrusted bytecode during their
 660           execution. By using pipes or other transports made available to
 661           the process as file descriptors supporting the read/write
 662           syscalls, it's possible to isolate those applications in
 663           their own address space using seccomp. Once seccomp is
 664           enabled via /proc/<pid>/seccomp, it cannot be disabled
 665           and the task is only allowed to execute a few safe syscalls
 666           defined by each seccomp mode.
 667
 668           If unsure, say Y. Only embedded should say N here.
 669
 670 endmenu
 671
 672 config ISA_DMA_API
 673         bool
 674         default y
 675
 676 menu "Bus options"
 677
 678 config ISA
 679         bool "Support for ISA-bus hardware"
 680         depends on PPC_PREP || PPC_CHRP
 681         select PPC_I8259
 682         help
 683           Find out whether you have ISA slots on your motherboard.  ISA is the
 684           name of a bus system, i.e. the way the CPU talks to the other stuff
 685           inside your box.  If you have an Apple machine, say N here; if you
 686           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 687           you have an embedded board, consult your board documentation.
 688
 689 config GENERIC_ISA_DMA
 690         bool
 691         depends on PPC64 || POWER4 || 6xx && !CPM2
 692         default y
 693
 694 config PPC_I8259
 695         bool
 696         default y if 85xx
 697         default n
 698
 699 config PPC_INDIRECT_PCI
 700         bool
 701         depends on PCI
 702         default y if 40x || 44x || 85xx || 83xx
 703         default n
 704
 705 config EISA
 706         bool
 707
 708 config SBUS
 709         bool
 710
 711 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 712 config MCA
 713         bool
 714
 715 config PCI
 716         bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
 717         default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
 718         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
 719         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 720         help
 721           Find out whether your system includes a PCI bus. PCI is the name of
 722           a bus system, i.e. the way the CPU talks to the other stuff inside
 723           your box.  If you say Y here, the kernel will include drivers and
 724           infrastructure code to support PCI bus devices.
 725
 726 config PCI_DOMAINS
 727         bool
 728         default PCI
 729
 730 config MPC83xx_PCI2
 731         bool "  Supprt for 2nd PCI host controller"
 732         depends on PCI && MPC834x
 733         default y if MPC834x_SYS
 734
 735 config PCI_QSPAN
 736         bool "QSpan PCI"
 737         depends on !4xx && !CPM2 && 8xx
 738         select PPC_I8259
 739         help
 740           Say Y here if you have a system based on a Motorola 8xx-series
 741           embedded processor with a QSPAN PCI interface, otherwise say N.
 742
 743 config PCI_8260
 744         bool
 745         depends on PCI && 8260
 746         select PPC_INDIRECT_PCI
 747         default y
 748
 749 config 8260_PCI9
 750         bool "  Enable workaround for MPC826x erratum PCI 9"
 751         depends on PCI_8260 && !ADS8272
 752         default y
 753
 754 choice
 755         prompt "  IDMA channel for PCI 9 workaround"
 756         depends on 8260_PCI9
 757
 758 config 8260_PCI9_IDMA1
 759         bool "IDMA1"
 760
 761 config 8260_PCI9_IDMA2
 762         bool "IDMA2"
 763
 764 config 8260_PCI9_IDMA3
 765         bool "IDMA3"
 766
 767 config 8260_PCI9_IDMA4
 768         bool "IDMA4"
 769
 770 endchoice
 771
 772 source "drivers/pci/Kconfig"
 773
 774 source "drivers/pcmcia/Kconfig"
 775
 776 source "drivers/pci/hotplug/Kconfig"
 777
 778 endmenu
 779
 780 menu "Advanced setup"
 781         depends on PPC32
 782
 783 config ADVANCED_OPTIONS
 784         bool "Prompt for advanced kernel configuration options"
 785         help
 786           This option will enable prompting for a variety of advanced kernel
 787           configuration options.  These options can cause the kernel to not
 788           work if they are set incorrectly, but can be used to optimize certain
 789           aspects of kernel memory management.
 790
 791           Unless you know what you are doing, say N here.
 792
 793 comment "Default settings for advanced configuration options are used"
 794         depends on !ADVANCED_OPTIONS
 795
 796 config HIGHMEM_START_BOOL
 797         bool "Set high memory pool address"
 798         depends on ADVANCED_OPTIONS && HIGHMEM
 799         help
 800           This option allows you to set the base address of the kernel virtual
 801           area used to map high memory pages.  This can be useful in
 802           optimizing the layout of kernel virtual memory.
 803
 804           Say N here unless you know what you are doing.
 805
 806 config HIGHMEM_START
 807         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
 808         default "0xfe000000"
 809
 810 config LOWMEM_SIZE_BOOL
 811         bool "Set maximum low memory"
 812         depends on ADVANCED_OPTIONS
 813         help
 814           This option allows you to set the maximum amount of memory which
 815           will be used as "low memory", that is, memory which the kernel can
 816           access directly, without having to set up a kernel virtual mapping.
 817           This can be useful in optimizing the layout of kernel virtual
 818           memory.
 819
 820           Say N here unless you know what you are doing.
 821
 822 config LOWMEM_SIZE
 823         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 824         default "0x30000000"
 825
 826 config KERNEL_START_BOOL
 827         bool "Set custom kernel base address"
 828         depends on ADVANCED_OPTIONS
 829         help
 830           This option allows you to set the kernel virtual address at which
 831           the kernel will map low memory (the kernel image will be linked at
 832           this address).  This can be useful in optimizing the virtual memory
 833           layout of the system.
 834
 835           Say N here unless you know what you are doing.
 836
 837 config KERNEL_START
 838         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 839         default "0xc0000000"
 840
 841 config TASK_SIZE_BOOL
 842         bool "Set custom user task size"
 843         depends on ADVANCED_OPTIONS
 844         help
 845           This option allows you to set the amount of virtual address space
 846           allocated to user tasks.  This can be useful in optimizing the
 847           virtual memory layout of the system.
 848
 849           Say N here unless you know what you are doing.
 850
 851 config TASK_SIZE
 852         hex "Size of user task space" if TASK_SIZE_BOOL
 853         default "0x80000000"
 854
 855 config CONSISTENT_START_BOOL
 856         bool "Set custom consistent memory pool address"
 857         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 858         help
 859           This option allows you to set the base virtual address
 860           of the the consistent memory pool.  This pool of virtual
 861           memory is used to make consistent memory allocations.
 862
 863 config CONSISTENT_START
 864         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 865         default "0xff100000" if NOT_COHERENT_CACHE
 866
 867 config CONSISTENT_SIZE_BOOL
 868         bool "Set custom consistent memory pool size"
 869         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 870         help
 871           This option allows you to set the size of the the
 872           consistent memory pool.  This pool of virtual memory
 873           is used to make consistent memory allocations.
 874
 875 config CONSISTENT_SIZE
 876         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 877         default "0x00200000" if NOT_COHERENT_CACHE
 878
 879 config BOOT_LOAD_BOOL
 880         bool "Set the boot link/load address"
 881         depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
 882         help
 883           This option allows you to set the initial load address of the zImage
 884           or zImage.initrd file.  This can be useful if you are on a board
 885           which has a small amount of memory.
 886
 887           Say N here unless you know what you are doing.
 888
 889 config BOOT_LOAD
 890         hex "Link/load address for booting" if BOOT_LOAD_BOOL
 891         default "0x00400000" if 40x || 8xx || 8260
 892         default "0x01000000" if 44x
 893         default "0x00800000"
 894
 895 config PIN_TLB
 896         bool "Pinned Kernel TLBs (860 ONLY)"
 897         depends on ADVANCED_OPTIONS && 8xx
 898 endmenu
 899
 900 if PPC64
 901 config KERNEL_START
 902         hex
 903         default "0xc000000000000000"
 904 endif
 905
 906 source "net/Kconfig"
 907
 908 source "drivers/Kconfig"
 909
 910 source "fs/Kconfig"
 911
 912 # XXX source "arch/ppc/8xx_io/Kconfig"
 913
 914 # XXX source "arch/ppc/8260_io/Kconfig"
 915
 916 source "arch/powerpc/platforms/iseries/Kconfig"
 917
 918 source "lib/Kconfig"
 919
 920 menu "Instrumentation Support"
 921         depends on EXPERIMENTAL
 922
 923 source "arch/powerpc/oprofile/Kconfig"
 924
 925 config KPROBES
 926         bool "Kprobes (EXPERIMENTAL)"
 927         help
 928           Kprobes allows you to trap at almost any kernel address and
 929           execute a callback function.  register_kprobe() establishes
 930           a probepoint and specifies the callback.  Kprobes is useful
 931           for kernel debugging, non-intrusive instrumentation and testing.
 932           If in doubt, say "N".
 933 endmenu
 934
 935 source "arch/powerpc/Kconfig.debug"
 936
 937 source "security/Kconfig"
 938
 939 config KEYS_COMPAT
 940         bool
 941         depends on COMPAT && KEYS
 942         default y
 943
 944 source "crypto/Kconfig"