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 RWSEM_GENERIC_SPINLOCK
  34         bool
  35
  36 config RWSEM_XCHGADD_ALGORITHM
  37         bool
  38         default y
  39
  40 config GENERIC_CALIBRATE_DELAY
  41         bool
  42         default y
  43
  44 config PPC
  45         bool
  46         default y
  47
  48 config EARLY_PRINTK
  49         bool
  50         default y
  51
  52 config COMPAT
  53         bool
  54         default y if PPC64
  55
  56 config SYSVIPC_COMPAT
  57         bool
  58         depends on COMPAT && SYSVIPC
  59         default y
  60
  61 # All PPC32s use generic nvram driver through ppc_md
  62 config GENERIC_NVRAM
  63         bool
  64         default y if PPC32
  65
  66 config SCHED_NO_NO_OMIT_FRAME_POINTER
  67         bool
  68         default y
  69
  70 config ARCH_MAY_HAVE_PC_FDC
  71         bool
  72         default y
  73
  74 menu "Processor support"
  75 choice
  76         prompt "Processor Type"
  77         depends on PPC32
  78         default 6xx
  79
  80 config 6xx
  81         bool "6xx/7xx/74xx"
  82         select PPC_FPU
  83         help
  84           There are four families of PowerPC chips supported.  The more common
  85           types (601, 603, 604, 740, 750, 7400), the Motorola embedded
  86           versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
  87           embedded versions (403 and 405) and the high end 64 bit Power
  88           processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
  89
  90           Unless you are building a kernel for one of the embedded processor
  91           systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
  92           Note that the kernel runs in 32-bit mode even on 64-bit chips.
  93
  94 config PPC_52xx
  95         bool "Freescale 52xx"
  96
  97 config PPC_82xx
  98         bool "Freescale 82xx"
  99
 100 config PPC_83xx
 101         bool "Freescale 83xx"
 102
 103 config 40x
 104         bool "AMCC 40x"
 105
 106 config 44x
 107         bool "AMCC 44x"
 108
 109 config 8xx
 110         bool "Freescale 8xx"
 111
 112 config E200
 113         bool "Freescale e200"
 114
 115 config E500
 116         bool "Freescale e500"
 117 endchoice
 118
 119 config POWER4_ONLY
 120         bool "Optimize for POWER4"
 121         depends on PPC64
 122         default n
 123         ---help---
 124           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
 125           The resulting binary will not work on POWER3 or RS64 processors
 126           when compiled with binutils 2.15 or later.
 127
 128 config POWER3
 129         bool
 130         depends on PPC64
 131         default y if !POWER4_ONLY
 132
 133 config POWER4
 134         depends on PPC64
 135         def_bool y
 136
 137 config PPC_FPU
 138         bool
 139         default y if PPC64
 140
 141 config BOOKE
 142         bool
 143         depends on E200 || E500
 144         default y
 145
 146 config FSL_BOOKE
 147         bool
 148         depends on E200 || E500
 149         default y
 150
 151 config PTE_64BIT
 152         bool
 153         depends on 44x || E500
 154         default y if 44x
 155         default y if E500 && PHYS_64BIT
 156
 157 config PHYS_64BIT
 158         bool 'Large physical address support' if E500
 159         depends on 44x || E500
 160         default y if 44x
 161         ---help---
 162           This option enables kernel support for larger than 32-bit physical
 163           addresses.  This features is not be available on all e500 cores.
 164
 165           If in doubt, say N here.
 166
 167 config ALTIVEC
 168         bool "AltiVec Support"
 169         depends on 6xx || POWER4
 170         ---help---
 171           This option enables kernel support for the Altivec extensions to the
 172           PowerPC processor. The kernel currently supports saving and restoring
 173           altivec registers, and turning on the 'altivec enable' bit so user
 174           processes can execute altivec instructions.
 175
 176           This option is only usefully if you have a processor that supports
 177           altivec (G4, otherwise known as 74xx series), but does not have
 178           any affect on a non-altivec cpu (it does, however add code to the
 179           kernel).
 180
 181           If in doubt, say Y here.
 182
 183 config SPE
 184         bool "SPE Support"
 185         depends on E200 || E500
 186         ---help---
 187           This option enables kernel support for the Signal Processing
 188           Extensions (SPE) to the PowerPC processor. The kernel currently
 189           supports saving and restoring SPE registers, and turning on the
 190           'spe enable' bit so user processes can execute SPE instructions.
 191
 192           This option is only useful if you have a processor that supports
 193           SPE (e500, otherwise known as 85xx series), but does not have any
 194           effect on a non-spe cpu (it does, however add code to the kernel).
 195
 196           If in doubt, say Y here.
 197
 198 config PPC_STD_MMU
 199         bool
 200         depends on 6xx || POWER3 || POWER4 || PPC64
 201         default y
 202
 203 config PPC_STD_MMU_32
 204         def_bool y
 205         depends on PPC_STD_MMU && PPC32
 206
 207 config SMP
 208         depends on PPC_STD_MMU
 209         bool "Symmetric multi-processing support"
 210         ---help---
 211           This enables support for systems with more than one CPU. If you have
 212           a system with only one CPU, say N. If you have a system with more
 213           than one CPU, say Y.  Note that the kernel does not currently
 214           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 215           since they have inadequate hardware support for multiprocessor
 216           operation.
 217
 218           If you say N here, the kernel will run on single and multiprocessor
 219           machines, but will use only one CPU of a multiprocessor machine. If
 220           you say Y here, the kernel will run on single-processor machines.
 221           On a single-processor machine, the kernel will run faster if you say
 222           N here.
 223
 224           If you don't know what to do here, say N.
 225
 226 config NR_CPUS
 227         int "Maximum number of CPUs (2-128)"
 228         range 2 128
 229         depends on SMP
 230         default "32" if PPC64
 231         default "4"
 232
 233 config NOT_COHERENT_CACHE
 234         bool
 235         depends on 4xx || 8xx || E200
 236         default y
 237 endmenu
 238
 239 source "init/Kconfig"
 240
 241 menu "Platform support"
 242         depends on PPC64 || 6xx
 243
 244 choice
 245         prompt "Machine type"
 246         default PPC_MULTIPLATFORM
 247
 248 config PPC_MULTIPLATFORM
 249         bool "Generic desktop/server/laptop"
 250         help
 251           Select this option if configuring for an IBM pSeries or
 252           RS/6000 machine, an Apple machine, or a PReP, CHRP,
 253           Maple or Cell-based machine.
 254
 255 config PPC_ISERIES
 256         bool "IBM Legacy iSeries"
 257         depends on PPC64
 258
 259 config EMBEDDED6xx
 260         bool "Embedded 6xx/7xx/7xxx-based board"
 261         depends on PPC32 && BROKEN
 262
 263 config APUS
 264         bool "Amiga-APUS"
 265         depends on PPC32 && BROKEN
 266         help
 267           Select APUS if configuring for a PowerUP Amiga.
 268           More information is available at:
 269           <http://linux-apus.sourceforge.net/>.
 270 endchoice
 271
 272 config PPC_PSERIES
 273         depends on PPC_MULTIPLATFORM && PPC64
 274         bool "  IBM pSeries & new (POWER5-based) iSeries"
 275         select PPC_I8259
 276         select PPC_RTAS
 277         select RTAS_ERROR_LOGGING
 278         select PPC_UDBG_16550
 279         default y
 280
 281 config PPC_CHRP
 282         bool "  Common Hardware Reference Platform (CHRP) based machines"
 283         depends on PPC_MULTIPLATFORM && PPC32
 284         select PPC_I8259
 285         select PPC_INDIRECT_PCI
 286         select PPC_RTAS
 287         select PPC_MPC106
 288         select PPC_UDBG_16550
 289         default y
 290
 291 config PPC_PMAC
 292         bool "  Apple PowerMac based machines"
 293         depends on PPC_MULTIPLATFORM
 294         select PPC_INDIRECT_PCI if PPC32
 295         select PPC_MPC106 if PPC32
 296         default y
 297
 298 config PPC_PMAC64
 299         bool
 300         depends on PPC_PMAC && POWER4
 301         select U3_DART
 302         select MPIC_BROKEN_U3
 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 && BROKEN
 309         select PPC_I8259
 310         select PPC_INDIRECT_PCI
 311         select PPC_UDBG_16550
 312         default y
 313
 314 config PPC_MAPLE
 315         depends on PPC_MULTIPLATFORM && PPC64
 316         bool "  Maple 970FX Evaluation Board"
 317         select U3_DART
 318         select MPIC_BROKEN_U3
 319         select GENERIC_TBSYNC
 320         select PPC_UDBG_16550
 321         default n
 322         help
 323           This option enables support for the Maple 970FX Evaluation Board.
 324           For more informations, refer to <http://www.970eval.com>
 325
 326 config PPC_CELL
 327         bool "  Cell Broadband Processor Architecture"
 328         depends on PPC_MULTIPLATFORM && PPC64
 329         select PPC_RTAS
 330         select MMIO_NVRAM
 331         select PPC_UDBG_16550
 332
 333 config PPC_OF
 334         def_bool y
 335
 336 config XICS
 337         depends on PPC_PSERIES
 338         bool
 339         default y
 340
 341 config U3_DART
 342         bool
 343         depends on PPC_MULTIPLATFORM && PPC64
 344         default n
 345
 346 config MPIC
 347         depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
 348         bool
 349         default y
 350
 351 config PPC_RTAS
 352         bool
 353         default n
 354
 355 config RTAS_ERROR_LOGGING
 356         bool
 357         depends on PPC_RTAS
 358         default n
 359
 360 config RTAS_PROC
 361         bool "Proc interface to RTAS"
 362         depends on PPC_RTAS
 363         default y
 364
 365 config RTAS_FLASH
 366         tristate "Firmware flash interface"
 367         depends on PPC64 && RTAS_PROC
 368
 369 config MMIO_NVRAM
 370         bool
 371         default n
 372
 373 config MPIC_BROKEN_U3
 374         bool
 375         depends on PPC_MAPLE
 376         default y
 377
 378 config PPC_UDBG_16550
 379         bool
 380         default n
 381
 382 config CELL_IIC
 383         depends on PPC_CELL
 384         bool
 385         default y
 386
 387 config CRASH_DUMP
 388         bool "kernel crash dumps (EXPERIMENTAL)"
 389         depends on PPC_MULTIPLATFORM
 390         depends on EXPERIMENTAL
 391         help
 392           Build a kernel suitable for use as a kdump capture kernel.
 393           The kernel will be linked at a different address than normal, and
 394           so can only be used for Kdump.
 395
 396           Don't change this unless you know what you are doing.
 397
 398 config IBMVIO
 399         depends on PPC_PSERIES || PPC_ISERIES
 400         bool
 401         default y
 402
 403 config IBMEBUS
 404         depends on PPC_PSERIES
 405         bool "Support for GX bus based adapters"
 406         help
 407           Bus device driver for GX bus based adapters.
 408
 409 config PPC_MPC106
 410         bool
 411         default n
 412
 413 config GENERIC_TBSYNC
 414         bool
 415         default y if PPC32 && SMP
 416         default n
 417
 418 source "drivers/cpufreq/Kconfig"
 419
 420 config CPU_FREQ_PMAC
 421         bool "Support for Apple PowerBooks"
 422         depends on CPU_FREQ && ADB_PMU && PPC32
 423         select CPU_FREQ_TABLE
 424         help
 425           This adds support for frequency switching on Apple PowerBooks,
 426           this currently includes some models of iBook & Titanium
 427           PowerBook.
 428
 429 config CPU_FREQ_PMAC64
 430         bool "Support for some Apple G5s"
 431         depends on CPU_FREQ && PMAC_SMU && PPC64
 432         select CPU_FREQ_TABLE
 433         help
 434           This adds support for frequency switching on Apple iMac G5,
 435           and some of the more recent desktop G5 machines as well.
 436
 437 config PPC601_SYNC_FIX
 438         bool "Workarounds for PPC601 bugs"
 439         depends on 6xx && (PPC_PREP || PPC_PMAC)
 440         help
 441           Some versions of the PPC601 (the first PowerPC chip) have bugs which
 442           mean that extra synchronization instructions are required near
 443           certain instructions, typically those that make major changes to the
 444           CPU state.  These extra instructions reduce performance slightly.
 445           If you say N here, these extra instructions will not be included,
 446           resulting in a kernel which will run faster but may not run at all
 447           on some systems with the PPC601 chip.
 448
 449           If in doubt, say Y here.
 450
 451 config TAU
 452         bool "Thermal Management Support"
 453         depends on 6xx
 454         help
 455           G3 and G4 processors have an on-chip temperature sensor called the
 456           'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
 457           temperature within 2-4 degrees Celsius. This option shows the current
 458           on-die temperature in /proc/cpuinfo if the cpu supports it.
 459
 460           Unfortunately, on some chip revisions, this sensor is very inaccurate
 461           and in some cases, does not work at all, so don't assume the cpu
 462           temp is actually what /proc/cpuinfo says it is.
 463
 464 config TAU_INT
 465         bool "Interrupt driven TAU driver (DANGEROUS)"
 466         depends on TAU
 467         ---help---
 468           The TAU supports an interrupt driven mode which causes an interrupt
 469           whenever the temperature goes out of range. This is the fastest way
 470           to get notified the temp has exceeded a range. With this option off,
 471           a timer is used to re-check the temperature periodically.
 472
 473           However, on some cpus it appears that the TAU interrupt hardware
 474           is buggy and can cause a situation which would lead unexplained hard
 475           lockups.
 476
 477           Unless you are extending the TAU driver, or enjoy kernel/hardware
 478           debugging, leave this option off.
 479
 480 config TAU_AVERAGE
 481         bool "Average high and low temp"
 482         depends on TAU
 483         ---help---
 484           The TAU hardware can compare the temperature to an upper and lower
 485           bound.  The default behavior is to show both the upper and lower
 486           bound in /proc/cpuinfo. If the range is large, the temperature is
 487           either changing a lot, or the TAU hardware is broken (likely on some
 488           G4's). If the range is small (around 4 degrees), the temperature is
 489           relatively stable.  If you say Y here, a single temperature value,
 490           halfway between the upper and lower bounds, will be reported in
 491           /proc/cpuinfo.
 492
 493           If in doubt, say N here.
 494 endmenu
 495
 496 source arch/powerpc/platforms/embedded6xx/Kconfig
 497 source arch/powerpc/platforms/4xx/Kconfig
 498 source arch/powerpc/platforms/85xx/Kconfig
 499 source arch/powerpc/platforms/8xx/Kconfig
 500 source arch/powerpc/platforms/cell/Kconfig
 501
 502 menu "Kernel options"
 503
 504 config HIGHMEM
 505         bool "High memory support"
 506         depends on PPC32
 507
 508 source kernel/Kconfig.hz
 509 source kernel/Kconfig.preempt
 510 source "fs/Kconfig.binfmt"
 511
 512 # We optimistically allocate largepages from the VM, so make the limit
 513 # large enough (16MB). This badly named config option is actually
 514 # max order + 1
 515 config FORCE_MAX_ZONEORDER
 516         int
 517         depends on PPC64
 518         default "9" if PPC_64K_PAGES
 519         default "13"
 520
 521 config MATH_EMULATION
 522         bool "Math emulation"
 523         depends on 4xx || 8xx || E200 || E500
 524         ---help---
 525           Some PowerPC chips designed for embedded applications do not have
 526           a floating-point unit and therefore do not implement the
 527           floating-point instructions in the PowerPC instruction set.  If you
 528           say Y here, the kernel will include code to emulate a floating-point
 529           unit, which will allow programs that use floating-point
 530           instructions to run.
 531
 532 config IOMMU_VMERGE
 533         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 534         depends on EXPERIMENTAL && PPC64
 535         default n
 536         help
 537           Cause IO segments sent to a device for DMA to be merged virtually
 538           by the IOMMU when they happen to have been allocated contiguously.
 539           This doesn't add pressure to the IOMMU allocator. However, some
 540           drivers don't support getting large merged segments coming back
 541           from *_map_sg(). Say Y if you know the drivers you are using are
 542           properly handling this case.
 543
 544 config HOTPLUG_CPU
 545         bool "Support for enabling/disabling CPUs"
 546         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 547         ---help---
 548           Say Y here to be able to disable and re-enable individual
 549           CPUs at runtime on SMP machines.
 550
 551           Say N if you are unsure.
 552
 553 config KEXEC
 554         bool "kexec system call (EXPERIMENTAL)"
 555         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 556         help
 557           kexec is a system call that implements the ability to shutdown your
 558           current kernel, and to start another kernel.  It is like a reboot
 559           but it is indepedent of the system firmware.   And like a reboot
 560           you can start any kernel with it, not just Linux.
 561
 562           The name comes from the similiarity to the exec system call.
 563
 564           It is an ongoing process to be certain the hardware in a machine
 565           is properly shutdown, so do not be surprised if this code does not
 566           initially work for you.  It may help to enable device hotplugging
 567           support.  As of this writing the exact hardware interface is
 568           strongly in flux, so no good recommendation can be made.
 569
 570 config EMBEDDEDBOOT
 571         bool
 572         depends on 8xx || 8260
 573         default y
 574
 575 config PC_KEYBOARD
 576         bool "PC PS/2 style Keyboard"
 577         depends on 4xx || CPM2
 578
 579 config PPCBUG_NVRAM
 580         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 581         default y if PPC_PREP
 582
 583 config IRQ_ALL_CPUS
 584         bool "Distribute interrupts on all CPUs by default"
 585         depends on SMP && !MV64360
 586         help
 587           This option gives the kernel permission to distribute IRQs across
 588           multiple CPUs.  Saying N here will route all IRQs to the first
 589           CPU.  Generally saying Y is safe, although some problems have been
 590           reported with SMP Power Macintoshes with this option enabled.
 591
 592 source "arch/powerpc/platforms/pseries/Kconfig"
 593
 594 config NUMA
 595         bool "NUMA support"
 596         depends on PPC64
 597         default y if SMP && PPC_PSERIES
 598
 599 config ARCH_SELECT_MEMORY_MODEL
 600         def_bool y
 601         depends on PPC64
 602
 603 config ARCH_FLATMEM_ENABLE
 604         def_bool y
 605         depends on (PPC64 && !NUMA) || PPC32
 606
 607 config ARCH_SPARSEMEM_ENABLE
 608         def_bool y
 609         depends on PPC64
 610
 611 config ARCH_SPARSEMEM_DEFAULT
 612         def_bool y
 613         depends on SMP && PPC_PSERIES
 614
 615 source "mm/Kconfig"
 616
 617 config HAVE_ARCH_EARLY_PFN_TO_NID
 618         def_bool y
 619         depends on NEED_MULTIPLE_NODES
 620
 621 config ARCH_MEMORY_PROBE
 622         def_bool y
 623         depends on MEMORY_HOTPLUG
 624
 625 config PPC_64K_PAGES
 626         bool "64k page size"
 627         depends on PPC64
 628         help
 629           This option changes the kernel logical page size to 64k. On machines
 630           without processor support for 64k pages, the kernel will simulate
 631           them by loading each individual 4k page on demand transparently,
 632           while on hardware with such support, it will be used to map
 633           normal application pages.
 634
 635 config SCHED_SMT
 636         bool "SMT (Hyperthreading) scheduler support"
 637         depends on PPC64 && SMP
 638         default off
 639         help
 640           SMT scheduler support improves the CPU scheduler's decision making
 641           when dealing with POWER5 cpus at a cost of slightly increased
 642           overhead in some places. If unsure say N here.
 643
 644 config PROC_DEVICETREE
 645         bool "Support for device tree in /proc"
 646         depends on PROC_FS
 647         help
 648           This option adds a device-tree directory under /proc which contains
 649           an image of the device tree that the kernel copies from Open
 650           Firmware or other boot firmware. If unsure, say Y here.
 651
 652 source "arch/powerpc/platforms/prep/Kconfig"
 653
 654 config CMDLINE_BOOL
 655         bool "Default bootloader kernel arguments"
 656         depends on !PPC_ISERIES
 657
 658 config CMDLINE
 659         string "Initial kernel command string"
 660         depends on CMDLINE_BOOL
 661         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 662         help
 663           On some platforms, there is currently no way for the boot loader to
 664           pass arguments to the kernel. For these platforms, you can supply
 665           some command-line options at build time by entering them here.  In
 666           most cases you will need to specify the root device here.
 667
 668 if !44x || BROKEN
 669 source kernel/power/Kconfig
 670 endif
 671
 672 config SECCOMP
 673         bool "Enable seccomp to safely compute untrusted bytecode"
 674         depends on PROC_FS
 675         default y
 676         help
 677           This kernel feature is useful for number crunching applications
 678           that may need to compute untrusted bytecode during their
 679           execution. By using pipes or other transports made available to
 680           the process as file descriptors supporting the read/write
 681           syscalls, it's possible to isolate those applications in
 682           their own address space using seccomp. Once seccomp is
 683           enabled via /proc/<pid>/seccomp, it cannot be disabled
 684           and the task is only allowed to execute a few safe syscalls
 685           defined by each seccomp mode.
 686
 687           If unsure, say Y. Only embedded should say N here.
 688
 689 endmenu
 690
 691 config ISA_DMA_API
 692         bool
 693         default y
 694
 695 menu "Bus options"
 696
 697 config ISA
 698         bool "Support for ISA-bus hardware"
 699         depends on PPC_PREP || PPC_CHRP
 700         select PPC_I8259
 701         help
 702           Find out whether you have ISA slots on your motherboard.  ISA is the
 703           name of a bus system, i.e. the way the CPU talks to the other stuff
 704           inside your box.  If you have an Apple machine, say N here; if you
 705           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 706           you have an embedded board, consult your board documentation.
 707
 708 config GENERIC_ISA_DMA
 709         bool
 710         depends on PPC64 || POWER4 || 6xx && !CPM2
 711         default y
 712
 713 config PPC_I8259
 714         bool
 715         default y if 85xx
 716         default n
 717
 718 config PPC_INDIRECT_PCI
 719         bool
 720         depends on PCI
 721         default y if 40x || 44x || 85xx || 83xx
 722         default n
 723
 724 config EISA
 725         bool
 726
 727 config SBUS
 728         bool
 729
 730 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 731 config MCA
 732         bool
 733
 734 config PCI
 735         bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
 736         default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
 737         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
 738         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 739         help
 740           Find out whether your system includes a PCI bus. PCI is the name of
 741           a bus system, i.e. the way the CPU talks to the other stuff inside
 742           your box.  If you say Y here, the kernel will include drivers and
 743           infrastructure code to support PCI bus devices.
 744
 745 config PCI_DOMAINS
 746         bool
 747         default PCI
 748
 749 config MPC83xx_PCI2
 750         bool "  Supprt for 2nd PCI host controller"
 751         depends on PCI && MPC834x
 752         default y if MPC834x_SYS
 753
 754 config PCI_QSPAN
 755         bool "QSpan PCI"
 756         depends on !4xx && !CPM2 && 8xx
 757         select PPC_I8259
 758         help
 759           Say Y here if you have a system based on a Motorola 8xx-series
 760           embedded processor with a QSPAN PCI interface, otherwise say N.
 761
 762 config PCI_8260
 763         bool
 764         depends on PCI && 8260
 765         select PPC_INDIRECT_PCI
 766         default y
 767
 768 config 8260_PCI9
 769         bool "  Enable workaround for MPC826x erratum PCI 9"
 770         depends on PCI_8260 && !ADS8272
 771         default y
 772
 773 choice
 774         prompt "  IDMA channel for PCI 9 workaround"
 775         depends on 8260_PCI9
 776
 777 config 8260_PCI9_IDMA1
 778         bool "IDMA1"
 779
 780 config 8260_PCI9_IDMA2
 781         bool "IDMA2"
 782
 783 config 8260_PCI9_IDMA3
 784         bool "IDMA3"
 785
 786 config 8260_PCI9_IDMA4
 787         bool "IDMA4"
 788
 789 endchoice
 790
 791 source "drivers/pci/Kconfig"
 792
 793 source "drivers/pcmcia/Kconfig"
 794
 795 source "drivers/pci/hotplug/Kconfig"
 796
 797 endmenu
 798
 799 menu "Advanced setup"
 800         depends on PPC32
 801
 802 config ADVANCED_OPTIONS
 803         bool "Prompt for advanced kernel configuration options"
 804         help
 805           This option will enable prompting for a variety of advanced kernel
 806           configuration options.  These options can cause the kernel to not
 807           work if they are set incorrectly, but can be used to optimize certain
 808           aspects of kernel memory management.
 809
 810           Unless you know what you are doing, say N here.
 811
 812 comment "Default settings for advanced configuration options are used"
 813         depends on !ADVANCED_OPTIONS
 814
 815 config HIGHMEM_START_BOOL
 816         bool "Set high memory pool address"
 817         depends on ADVANCED_OPTIONS && HIGHMEM
 818         help
 819           This option allows you to set the base address of the kernel virtual
 820           area used to map high memory pages.  This can be useful in
 821           optimizing the layout of kernel virtual memory.
 822
 823           Say N here unless you know what you are doing.
 824
 825 config HIGHMEM_START
 826         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
 827         default "0xfe000000"
 828
 829 config LOWMEM_SIZE_BOOL
 830         bool "Set maximum low memory"
 831         depends on ADVANCED_OPTIONS
 832         help
 833           This option allows you to set the maximum amount of memory which
 834           will be used as "low memory", that is, memory which the kernel can
 835           access directly, without having to set up a kernel virtual mapping.
 836           This can be useful in optimizing the layout of kernel virtual
 837           memory.
 838
 839           Say N here unless you know what you are doing.
 840
 841 config LOWMEM_SIZE
 842         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 843         default "0x30000000"
 844
 845 config KERNEL_START_BOOL
 846         bool "Set custom kernel base address"
 847         depends on ADVANCED_OPTIONS
 848         help
 849           This option allows you to set the kernel virtual address at which
 850           the kernel will map low memory (the kernel image will be linked at
 851           this address).  This can be useful in optimizing the virtual memory
 852           layout of the system.
 853
 854           Say N here unless you know what you are doing.
 855
 856 config KERNEL_START
 857         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 858         default "0xc0000000"
 859
 860 config TASK_SIZE_BOOL
 861         bool "Set custom user task size"
 862         depends on ADVANCED_OPTIONS
 863         help
 864           This option allows you to set the amount of virtual address space
 865           allocated to user tasks.  This can be useful in optimizing the
 866           virtual memory layout of the system.
 867
 868           Say N here unless you know what you are doing.
 869
 870 config TASK_SIZE
 871         hex "Size of user task space" if TASK_SIZE_BOOL
 872         default "0x80000000"
 873
 874 config CONSISTENT_START_BOOL
 875         bool "Set custom consistent memory pool address"
 876         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 877         help
 878           This option allows you to set the base virtual address
 879           of the the consistent memory pool.  This pool of virtual
 880           memory is used to make consistent memory allocations.
 881
 882 config CONSISTENT_START
 883         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 884         default "0xff100000" if NOT_COHERENT_CACHE
 885
 886 config CONSISTENT_SIZE_BOOL
 887         bool "Set custom consistent memory pool size"
 888         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 889         help
 890           This option allows you to set the size of the the
 891           consistent memory pool.  This pool of virtual memory
 892           is used to make consistent memory allocations.
 893
 894 config CONSISTENT_SIZE
 895         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 896         default "0x00200000" if NOT_COHERENT_CACHE
 897
 898 config BOOT_LOAD_BOOL
 899         bool "Set the boot link/load address"
 900         depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
 901         help
 902           This option allows you to set the initial load address of the zImage
 903           or zImage.initrd file.  This can be useful if you are on a board
 904           which has a small amount of memory.
 905
 906           Say N here unless you know what you are doing.
 907
 908 config BOOT_LOAD
 909         hex "Link/load address for booting" if BOOT_LOAD_BOOL
 910         default "0x00400000" if 40x || 8xx || 8260
 911         default "0x01000000" if 44x
 912         default "0x00800000"
 913
 914 config PIN_TLB
 915         bool "Pinned Kernel TLBs (860 ONLY)"
 916         depends on ADVANCED_OPTIONS && 8xx
 917 endmenu
 918
 919 if PPC64
 920 config KERNEL_START
 921         hex
 922         default "0xc000000000000000"
 923 endif
 924
 925 source "net/Kconfig"
 926
 927 source "drivers/Kconfig"
 928
 929 source "fs/Kconfig"
 930
 931 # XXX source "arch/ppc/8xx_io/Kconfig"
 932
 933 # XXX source "arch/ppc/8260_io/Kconfig"
 934
 935 source "arch/powerpc/platforms/iseries/Kconfig"
 936
 937 source "lib/Kconfig"
 938
 939 menu "Instrumentation Support"
 940         depends on EXPERIMENTAL
 941
 942 source "arch/powerpc/oprofile/Kconfig"
 943
 944 config KPROBES
 945         bool "Kprobes (EXPERIMENTAL)"
 946         depends on PPC64
 947         help
 948           Kprobes allows you to trap at almost any kernel address and
 949           execute a callback function.  register_kprobe() establishes
 950           a probepoint and specifies the callback.  Kprobes is useful
 951           for kernel debugging, non-intrusive instrumentation and testing.
 952           If in doubt, say "N".
 953 endmenu
 954
 955 source "arch/powerpc/Kconfig.debug"
 956
 957 source "security/Kconfig"
 958
 959 config KEYS_COMPAT
 960         bool
 961         depends on COMPAT && KEYS
 962         default y
 963
 964 source "crypto/Kconfig"