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_HWEIGHT
  41         bool
  42         default y
  43
  44 config GENERIC_CALIBRATE_DELAY
  45         bool
  46         default y
  47
  48 config PPC
  49         bool
  50         default y
  51
  52 config EARLY_PRINTK
  53         bool
  54         default y
  55
  56 config COMPAT
  57         bool
  58         default y if PPC64
  59
  60 config SYSVIPC_COMPAT
  61         bool
  62         depends on COMPAT && SYSVIPC
  63         default y
  64
  65 # All PPC32s use generic nvram driver through ppc_md
  66 config GENERIC_NVRAM
  67         bool
  68         default y if PPC32
  69
  70 config SCHED_NO_NO_OMIT_FRAME_POINTER
  71         bool
  72         default y
  73
  74 config ARCH_MAY_HAVE_PC_FDC
  75         bool
  76         default y
  77
  78 config PPC_OF
  79         def_bool y
  80
  81 config PPC_UDBG_16550
  82         bool
  83         default n
  84
  85 config GENERIC_TBSYNC
  86         bool
  87         default y if PPC32 && SMP
  88         default n
  89
  90 config DEFAULT_UIMAGE
  91         bool
  92         help
  93           Used to allow a board to specify it wants a uImage built by default
  94         default n
  95
  96 menu "Processor support"
  97 choice
  98         prompt "Processor Type"
  99         depends on PPC32
 100         default 6xx
 101
 102 config CLASSIC32
 103         bool "6xx/7xx/74xx"
 104         select PPC_FPU
 105         select 6xx
 106         help
 107           There are four families of PowerPC chips supported.  The more common
 108           types (601, 603, 604, 740, 750, 7400), the Motorola embedded
 109           versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
 110           embedded versions (403 and 405) and the high end 64 bit Power
 111           processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
 112
 113           Unless you are building a kernel for one of the embedded processor
 114           systems, 64 bit IBM RS/6000 or an Apple G5, choose 6xx.
 115           Note that the kernel runs in 32-bit mode even on 64-bit chips.
 116
 117 config PPC_52xx
 118         bool "Freescale 52xx"
 119         select 6xx
 120         select PPC_FPU
 121
 122 config PPC_82xx
 123         bool "Freescale 82xx"
 124         select 6xx
 125         select PPC_FPU
 126
 127 config PPC_83xx
 128         bool "Freescale 83xx"
 129         select 6xx
 130         select FSL_SOC
 131         select 83xx
 132         select PPC_FPU
 133
 134 config PPC_85xx
 135         bool "Freescale 85xx"
 136         select E500
 137         select FSL_SOC
 138         select 85xx
 139
 140 config 40x
 141         bool "AMCC 40x"
 142
 143 config 44x
 144         bool "AMCC 44x"
 145
 146 config 8xx
 147         bool "Freescale 8xx"
 148
 149 config E200
 150         bool "Freescale e200"
 151
 152 endchoice
 153
 154 config POWER4_ONLY
 155         bool "Optimize for POWER4"
 156         depends on PPC64
 157         default n
 158         ---help---
 159           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
 160           The resulting binary will not work on POWER3 or RS64 processors
 161           when compiled with binutils 2.15 or later.
 162
 163 config POWER3
 164         bool
 165         depends on PPC64
 166         default y if !POWER4_ONLY
 167
 168 config POWER4
 169         depends on PPC64
 170         def_bool y
 171
 172 config 6xx
 173         bool
 174
 175 # this is temp to handle compat with arch=ppc
 176 config 83xx
 177         bool
 178
 179 # this is temp to handle compat with arch=ppc
 180 config 85xx
 181         bool
 182
 183 config E500
 184         bool
 185
 186 config PPC_FPU
 187         bool
 188         default y if PPC64
 189
 190 config BOOKE
 191         bool
 192         depends on E200 || E500
 193         default y
 194
 195 config FSL_BOOKE
 196         bool
 197         depends on E200 || E500
 198         default y
 199
 200 config PTE_64BIT
 201         bool
 202         depends on 44x || E500
 203         default y if 44x
 204         default y if E500 && PHYS_64BIT
 205
 206 config PHYS_64BIT
 207         bool 'Large physical address support' if E500
 208         depends on 44x || E500
 209         default y if 44x
 210         ---help---
 211           This option enables kernel support for larger than 32-bit physical
 212           addresses.  This features is not be available on all e500 cores.
 213
 214           If in doubt, say N here.
 215
 216 config ALTIVEC
 217         bool "AltiVec Support"
 218         depends on CLASSIC32 || POWER4
 219         ---help---
 220           This option enables kernel support for the Altivec extensions to the
 221           PowerPC processor. The kernel currently supports saving and restoring
 222           altivec registers, and turning on the 'altivec enable' bit so user
 223           processes can execute altivec instructions.
 224
 225           This option is only usefully if you have a processor that supports
 226           altivec (G4, otherwise known as 74xx series), but does not have
 227           any affect on a non-altivec cpu (it does, however add code to the
 228           kernel).
 229
 230           If in doubt, say Y here.
 231
 232 config SPE
 233         bool "SPE Support"
 234         depends on E200 || E500
 235         default y
 236         ---help---
 237           This option enables kernel support for the Signal Processing
 238           Extensions (SPE) to the PowerPC processor. The kernel currently
 239           supports saving and restoring SPE registers, and turning on the
 240           'spe enable' bit so user processes can execute SPE instructions.
 241
 242           This option is only useful if you have a processor that supports
 243           SPE (e500, otherwise known as 85xx series), but does not have any
 244           effect on a non-spe cpu (it does, however add code to the kernel).
 245
 246           If in doubt, say Y here.
 247
 248 config PPC_STD_MMU
 249         bool
 250         depends on 6xx || POWER3 || POWER4 || PPC64
 251         default y
 252
 253 config PPC_STD_MMU_32
 254         def_bool y
 255         depends on PPC_STD_MMU && PPC32
 256
 257 config VIRT_CPU_ACCOUNTING
 258         bool "Deterministic task and CPU time accounting"
 259         depends on PPC64
 260         default y
 261         help
 262           Select this option to enable more accurate task and CPU time
 263           accounting.  This is done by reading a CPU counter on each
 264           kernel entry and exit and on transitions within the kernel
 265           between system, softirq and hardirq state, so there is a
 266           small performance impact.  This also enables accounting of
 267           stolen time on logically-partitioned systems running on
 268           IBM POWER5-based machines.
 269
 270           If in doubt, say Y here.
 271
 272 config SMP
 273         depends on PPC_STD_MMU
 274         bool "Symmetric multi-processing support"
 275         ---help---
 276           This enables support for systems with more than one CPU. If you have
 277           a system with only one CPU, say N. If you have a system with more
 278           than one CPU, say Y.  Note that the kernel does not currently
 279           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 280           since they have inadequate hardware support for multiprocessor
 281           operation.
 282
 283           If you say N here, the kernel will run on single and multiprocessor
 284           machines, but will use only one CPU of a multiprocessor machine. If
 285           you say Y here, the kernel will run on single-processor machines.
 286           On a single-processor machine, the kernel will run faster if you say
 287           N here.
 288
 289           If you don't know what to do here, say N.
 290
 291 config NR_CPUS
 292         int "Maximum number of CPUs (2-128)"
 293         range 2 128
 294         depends on SMP
 295         default "32" if PPC64
 296         default "4"
 297
 298 config NOT_COHERENT_CACHE
 299         bool
 300         depends on 4xx || 8xx || E200
 301         default y
 302 endmenu
 303
 304 source "init/Kconfig"
 305
 306 menu "Platform support"
 307         depends on PPC64 || CLASSIC32
 308
 309 choice
 310         prompt "Machine type"
 311         default PPC_MULTIPLATFORM
 312
 313 config PPC_MULTIPLATFORM
 314         bool "Generic desktop/server/laptop"
 315         help
 316           Select this option if configuring for an IBM pSeries or
 317           RS/6000 machine, an Apple machine, or a PReP, CHRP,
 318           Maple or Cell-based machine.
 319
 320 config PPC_ISERIES
 321         bool "IBM Legacy iSeries"
 322         depends on PPC64
 323
 324 config EMBEDDED6xx
 325         bool "Embedded 6xx/7xx/7xxx-based board"
 326         depends on PPC32 && BROKEN
 327
 328 config APUS
 329         bool "Amiga-APUS"
 330         depends on PPC32 && BROKEN
 331         help
 332           Select APUS if configuring for a PowerUP Amiga.
 333           More information is available at:
 334           <http://linux-apus.sourceforge.net/>.
 335 endchoice
 336
 337 config PPC_PSERIES
 338         depends on PPC_MULTIPLATFORM && PPC64
 339         bool "  IBM pSeries & new (POWER5-based) iSeries"
 340         select PPC_I8259
 341         select PPC_RTAS
 342         select RTAS_ERROR_LOGGING
 343         select PPC_UDBG_16550
 344         default y
 345
 346 config PPC_CHRP
 347         bool "  Common Hardware Reference Platform (CHRP) based machines"
 348         depends on PPC_MULTIPLATFORM && PPC32
 349         select PPC_I8259
 350         select PPC_INDIRECT_PCI
 351         select PPC_RTAS
 352         select PPC_MPC106
 353         select PPC_UDBG_16550
 354         default y
 355
 356 config PPC_PMAC
 357         bool "  Apple PowerMac based machines"
 358         depends on PPC_MULTIPLATFORM
 359         select PPC_INDIRECT_PCI if PPC32
 360         select PPC_MPC106 if PPC32
 361         default y
 362
 363 config PPC_PMAC64
 364         bool
 365         depends on PPC_PMAC && POWER4
 366         select U3_DART
 367         select MPIC_BROKEN_U3
 368         select GENERIC_TBSYNC
 369         default y
 370
 371 config PPC_PREP
 372         bool "  PowerPC Reference Platform (PReP) based machines"
 373         depends on PPC_MULTIPLATFORM && PPC32 && BROKEN
 374         select PPC_I8259
 375         select PPC_INDIRECT_PCI
 376         select PPC_UDBG_16550
 377         default y
 378
 379 config PPC_MAPLE
 380         depends on PPC_MULTIPLATFORM && PPC64
 381         bool "  Maple 970FX Evaluation Board"
 382         select U3_DART
 383         select MPIC_BROKEN_U3
 384         select GENERIC_TBSYNC
 385         select PPC_UDBG_16550
 386         default n
 387         help
 388           This option enables support for the Maple 970FX Evaluation Board.
 389           For more informations, refer to <http://www.970eval.com>
 390
 391 config PPC_CELL
 392         bool "  Cell Broadband Processor Architecture"
 393         depends on PPC_MULTIPLATFORM && PPC64
 394         select PPC_RTAS
 395         select MMIO_NVRAM
 396         select PPC_UDBG_16550
 397
 398 config XICS
 399         depends on PPC_PSERIES
 400         bool
 401         default y
 402
 403 config U3_DART
 404         bool
 405         depends on PPC_MULTIPLATFORM && PPC64
 406         default n
 407
 408 config MPIC
 409         depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE || PPC_CHRP
 410         bool
 411         default y
 412
 413 config PPC_RTAS
 414         bool
 415         default n
 416
 417 config RTAS_ERROR_LOGGING
 418         bool
 419         depends on PPC_RTAS
 420         default n
 421
 422 config RTAS_PROC
 423         bool "Proc interface to RTAS"
 424         depends on PPC_RTAS
 425         default y
 426
 427 config RTAS_FLASH
 428         tristate "Firmware flash interface"
 429         depends on PPC64 && RTAS_PROC
 430
 431 config MMIO_NVRAM
 432         bool
 433         default n
 434
 435 config MPIC_BROKEN_U3
 436         bool
 437         depends on PPC_MAPLE
 438         default y
 439
 440 config CELL_IIC
 441         depends on PPC_CELL
 442         bool
 443         default y
 444
 445 config IBMVIO
 446         depends on PPC_PSERIES || PPC_ISERIES
 447         bool
 448         default y
 449
 450 config IBMEBUS
 451         depends on PPC_PSERIES
 452         bool "Support for GX bus based adapters"
 453         help
 454           Bus device driver for GX bus based adapters.
 455
 456 config PPC_MPC106
 457         bool
 458         default n
 459
 460 source "drivers/cpufreq/Kconfig"
 461
 462 config CPU_FREQ_PMAC
 463         bool "Support for Apple PowerBooks"
 464         depends on CPU_FREQ && ADB_PMU && PPC32
 465         select CPU_FREQ_TABLE
 466         help
 467           This adds support for frequency switching on Apple PowerBooks,
 468           this currently includes some models of iBook & Titanium
 469           PowerBook.
 470
 471 config CPU_FREQ_PMAC64
 472         bool "Support for some Apple G5s"
 473         depends on CPU_FREQ && PMAC_SMU && PPC64
 474         select CPU_FREQ_TABLE
 475         help
 476           This adds support for frequency switching on Apple iMac G5,
 477           and some of the more recent desktop G5 machines as well.
 478
 479 config PPC601_SYNC_FIX
 480         bool "Workarounds for PPC601 bugs"
 481         depends on 6xx && (PPC_PREP || PPC_PMAC)
 482         help
 483           Some versions of the PPC601 (the first PowerPC chip) have bugs which
 484           mean that extra synchronization instructions are required near
 485           certain instructions, typically those that make major changes to the
 486           CPU state.  These extra instructions reduce performance slightly.
 487           If you say N here, these extra instructions will not be included,
 488           resulting in a kernel which will run faster but may not run at all
 489           on some systems with the PPC601 chip.
 490
 491           If in doubt, say Y here.
 492
 493 config TAU
 494         bool "On-chip CPU temperature sensor support"
 495         depends on 6xx
 496         help
 497           G3 and G4 processors have an on-chip temperature sensor called the
 498           'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
 499           temperature within 2-4 degrees Celsius. This option shows the current
 500           on-die temperature in /proc/cpuinfo if the cpu supports it.
 501
 502           Unfortunately, on some chip revisions, this sensor is very inaccurate
 503           and in many cases, does not work at all, so don't assume the cpu
 504           temp is actually what /proc/cpuinfo says it is.
 505
 506 config TAU_INT
 507         bool "Interrupt driven TAU driver (DANGEROUS)"
 508         depends on TAU
 509         ---help---
 510           The TAU supports an interrupt driven mode which causes an interrupt
 511           whenever the temperature goes out of range. This is the fastest way
 512           to get notified the temp has exceeded a range. With this option off,
 513           a timer is used to re-check the temperature periodically.
 514
 515           However, on some cpus it appears that the TAU interrupt hardware
 516           is buggy and can cause a situation which would lead unexplained hard
 517           lockups.
 518
 519           Unless you are extending the TAU driver, or enjoy kernel/hardware
 520           debugging, leave this option off.
 521
 522 config TAU_AVERAGE
 523         bool "Average high and low temp"
 524         depends on TAU
 525         ---help---
 526           The TAU hardware can compare the temperature to an upper and lower
 527           bound.  The default behavior is to show both the upper and lower
 528           bound in /proc/cpuinfo. If the range is large, the temperature is
 529           either changing a lot, or the TAU hardware is broken (likely on some
 530           G4's). If the range is small (around 4 degrees), the temperature is
 531           relatively stable.  If you say Y here, a single temperature value,
 532           halfway between the upper and lower bounds, will be reported in
 533           /proc/cpuinfo.
 534
 535           If in doubt, say N here.
 536 endmenu
 537
 538 source arch/powerpc/platforms/embedded6xx/Kconfig
 539 source arch/powerpc/platforms/4xx/Kconfig
 540 source arch/powerpc/platforms/83xx/Kconfig
 541 source arch/powerpc/platforms/85xx/Kconfig
 542 source arch/powerpc/platforms/8xx/Kconfig
 543 source arch/powerpc/platforms/cell/Kconfig
 544
 545 menu "Kernel options"
 546
 547 config HIGHMEM
 548         bool "High memory support"
 549         depends on PPC32
 550
 551 source kernel/Kconfig.hz
 552 source kernel/Kconfig.preempt
 553 source "fs/Kconfig.binfmt"
 554
 555 # We optimistically allocate largepages from the VM, so make the limit
 556 # large enough (16MB). This badly named config option is actually
 557 # max order + 1
 558 config FORCE_MAX_ZONEORDER
 559         int
 560         depends on PPC64
 561         default "9" if PPC_64K_PAGES
 562         default "13"
 563
 564 config MATH_EMULATION
 565         bool "Math emulation"
 566         depends on 4xx || 8xx || E200 || E500
 567         ---help---
 568           Some PowerPC chips designed for embedded applications do not have
 569           a floating-point unit and therefore do not implement the
 570           floating-point instructions in the PowerPC instruction set.  If you
 571           say Y here, the kernel will include code to emulate a floating-point
 572           unit, which will allow programs that use floating-point
 573           instructions to run.
 574
 575 config IOMMU_VMERGE
 576         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 577         depends on EXPERIMENTAL && PPC64
 578         default n
 579         help
 580           Cause IO segments sent to a device for DMA to be merged virtually
 581           by the IOMMU when they happen to have been allocated contiguously.
 582           This doesn't add pressure to the IOMMU allocator. However, some
 583           drivers don't support getting large merged segments coming back
 584           from *_map_sg(). Say Y if you know the drivers you are using are
 585           properly handling this case.
 586
 587 config HOTPLUG_CPU
 588         bool "Support for enabling/disabling CPUs"
 589         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 590         ---help---
 591           Say Y here to be able to disable and re-enable individual
 592           CPUs at runtime on SMP machines.
 593
 594           Say N if you are unsure.
 595
 596 config KEXEC
 597         bool "kexec system call (EXPERIMENTAL)"
 598         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 599         help
 600           kexec is a system call that implements the ability to shutdown your
 601           current kernel, and to start another kernel.  It is like a reboot
 602           but it is indepedent of the system firmware.   And like a reboot
 603           you can start any kernel with it, not just Linux.
 604
 605           The name comes from the similiarity to the exec system call.
 606
 607           It is an ongoing process to be certain the hardware in a machine
 608           is properly shutdown, so do not be surprised if this code does not
 609           initially work for you.  It may help to enable device hotplugging
 610           support.  As of this writing the exact hardware interface is
 611           strongly in flux, so no good recommendation can be made.
 612
 613 config CRASH_DUMP
 614         bool "Build a kdump crash kernel (EXPERIMENTAL)"
 615         depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
 616         help
 617           Build a kernel suitable for use as a kdump capture kernel.
 618           The kernel will be linked at a different address than normal, and
 619           so can only be used for Kdump.
 620
 621           Don't change this unless you know what you are doing.
 622
 623 config EMBEDDEDBOOT
 624         bool
 625         depends on 8xx || 8260
 626         default y
 627
 628 config PC_KEYBOARD
 629         bool "PC PS/2 style Keyboard"
 630         depends on 4xx || CPM2
 631
 632 config PPCBUG_NVRAM
 633         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 634         default y if PPC_PREP
 635
 636 config IRQ_ALL_CPUS
 637         bool "Distribute interrupts on all CPUs by default"
 638         depends on SMP && !MV64360
 639         help
 640           This option gives the kernel permission to distribute IRQs across
 641           multiple CPUs.  Saying N here will route all IRQs to the first
 642           CPU.  Generally saying Y is safe, although some problems have been
 643           reported with SMP Power Macintoshes with this option enabled.
 644
 645 source "arch/powerpc/platforms/pseries/Kconfig"
 646
 647 config NUMA
 648         bool "NUMA support"
 649         depends on PPC64
 650         default y if SMP && PPC_PSERIES
 651
 652 config ARCH_SELECT_MEMORY_MODEL
 653         def_bool y
 654         depends on PPC64
 655
 656 config ARCH_FLATMEM_ENABLE
 657         def_bool y
 658         depends on (PPC64 && !NUMA) || PPC32
 659
 660 config ARCH_SPARSEMEM_ENABLE
 661         def_bool y
 662         depends on PPC64
 663
 664 config ARCH_SPARSEMEM_DEFAULT
 665         def_bool y
 666         depends on SMP && PPC_PSERIES
 667
 668 source "mm/Kconfig"
 669
 670 config HAVE_ARCH_EARLY_PFN_TO_NID
 671         def_bool y
 672         depends on NEED_MULTIPLE_NODES
 673
 674 config ARCH_MEMORY_PROBE
 675         def_bool y
 676         depends on MEMORY_HOTPLUG
 677
 678 config PPC_64K_PAGES
 679         bool "64k page size"
 680         depends on PPC64
 681         help
 682           This option changes the kernel logical page size to 64k. On machines
 683           without processor support for 64k pages, the kernel will simulate
 684           them by loading each individual 4k page on demand transparently,
 685           while on hardware with such support, it will be used to map
 686           normal application pages.
 687
 688 config SCHED_SMT
 689         bool "SMT (Hyperthreading) scheduler support"
 690         depends on PPC64 && SMP
 691         default off
 692         help
 693           SMT scheduler support improves the CPU scheduler's decision making
 694           when dealing with POWER5 cpus at a cost of slightly increased
 695           overhead in some places. If unsure say N here.
 696
 697 config PROC_DEVICETREE
 698         bool "Support for device tree in /proc"
 699         depends on PROC_FS
 700         help
 701           This option adds a device-tree directory under /proc which contains
 702           an image of the device tree that the kernel copies from Open
 703           Firmware or other boot firmware. If unsure, say Y here.
 704
 705 source "arch/powerpc/platforms/prep/Kconfig"
 706
 707 config CMDLINE_BOOL
 708         bool "Default bootloader kernel arguments"
 709         depends on !PPC_ISERIES
 710
 711 config CMDLINE
 712         string "Initial kernel command string"
 713         depends on CMDLINE_BOOL
 714         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 715         help
 716           On some platforms, there is currently no way for the boot loader to
 717           pass arguments to the kernel. For these platforms, you can supply
 718           some command-line options at build time by entering them here.  In
 719           most cases you will need to specify the root device here.
 720
 721 if !44x || BROKEN
 722 source kernel/power/Kconfig
 723 endif
 724
 725 config SECCOMP
 726         bool "Enable seccomp to safely compute untrusted bytecode"
 727         depends on PROC_FS
 728         default y
 729         help
 730           This kernel feature is useful for number crunching applications
 731           that may need to compute untrusted bytecode during their
 732           execution. By using pipes or other transports made available to
 733           the process as file descriptors supporting the read/write
 734           syscalls, it's possible to isolate those applications in
 735           their own address space using seccomp. Once seccomp is
 736           enabled via /proc/<pid>/seccomp, it cannot be disabled
 737           and the task is only allowed to execute a few safe syscalls
 738           defined by each seccomp mode.
 739
 740           If unsure, say Y. Only embedded should say N here.
 741
 742 endmenu
 743
 744 config ISA_DMA_API
 745         bool
 746         default y
 747
 748 menu "Bus options"
 749
 750 config ISA
 751         bool "Support for ISA-bus hardware"
 752         depends on PPC_PREP || PPC_CHRP
 753         select PPC_I8259
 754         help
 755           Find out whether you have ISA slots on your motherboard.  ISA is the
 756           name of a bus system, i.e. the way the CPU talks to the other stuff
 757           inside your box.  If you have an Apple machine, say N here; if you
 758           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 759           you have an embedded board, consult your board documentation.
 760
 761 config GENERIC_ISA_DMA
 762         bool
 763         depends on PPC64 || POWER4 || 6xx && !CPM2
 764         default y
 765
 766 config PPC_I8259
 767         bool
 768         default n
 769
 770 config PPC_INDIRECT_PCI
 771         bool
 772         depends on PCI
 773         default y if 40x || 44x
 774         default n
 775
 776 config EISA
 777         bool
 778
 779 config SBUS
 780         bool
 781
 782 config FSL_SOC
 783         bool
 784
 785 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 786 config MCA
 787         bool
 788
 789 config PCI
 790         bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
 791         default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx && !PPC_85xx
 792         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
 793         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 794         help
 795           Find out whether your system includes a PCI bus. PCI is the name of
 796           a bus system, i.e. the way the CPU talks to the other stuff inside
 797           your box.  If you say Y here, the kernel will include drivers and
 798           infrastructure code to support PCI bus devices.
 799
 800 config PCI_DOMAINS
 801         bool
 802         default PCI
 803
 804 config PCI_QSPAN
 805         bool "QSpan PCI"
 806         depends on !4xx && !CPM2 && 8xx
 807         select PPC_I8259
 808         help
 809           Say Y here if you have a system based on a Motorola 8xx-series
 810           embedded processor with a QSPAN PCI interface, otherwise say N.
 811
 812 config PCI_8260
 813         bool
 814         depends on PCI && 8260
 815         select PPC_INDIRECT_PCI
 816         default y
 817
 818 config 8260_PCI9
 819         bool "  Enable workaround for MPC826x erratum PCI 9"
 820         depends on PCI_8260 && !ADS8272
 821         default y
 822
 823 choice
 824         prompt "  IDMA channel for PCI 9 workaround"
 825         depends on 8260_PCI9
 826
 827 config 8260_PCI9_IDMA1
 828         bool "IDMA1"
 829
 830 config 8260_PCI9_IDMA2
 831         bool "IDMA2"
 832
 833 config 8260_PCI9_IDMA3
 834         bool "IDMA3"
 835
 836 config 8260_PCI9_IDMA4
 837         bool "IDMA4"
 838
 839 endchoice
 840
 841 source "drivers/pci/Kconfig"
 842
 843 source "drivers/pcmcia/Kconfig"
 844
 845 source "drivers/pci/hotplug/Kconfig"
 846
 847 endmenu
 848
 849 menu "Advanced setup"
 850         depends on PPC32
 851
 852 config ADVANCED_OPTIONS
 853         bool "Prompt for advanced kernel configuration options"
 854         help
 855           This option will enable prompting for a variety of advanced kernel
 856           configuration options.  These options can cause the kernel to not
 857           work if they are set incorrectly, but can be used to optimize certain
 858           aspects of kernel memory management.
 859
 860           Unless you know what you are doing, say N here.
 861
 862 comment "Default settings for advanced configuration options are used"
 863         depends on !ADVANCED_OPTIONS
 864
 865 config HIGHMEM_START_BOOL
 866         bool "Set high memory pool address"
 867         depends on ADVANCED_OPTIONS && HIGHMEM
 868         help
 869           This option allows you to set the base address of the kernel virtual
 870           area used to map high memory pages.  This can be useful in
 871           optimizing the layout of kernel virtual memory.
 872
 873           Say N here unless you know what you are doing.
 874
 875 config HIGHMEM_START
 876         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
 877         default "0xfe000000"
 878
 879 config LOWMEM_SIZE_BOOL
 880         bool "Set maximum low memory"
 881         depends on ADVANCED_OPTIONS
 882         help
 883           This option allows you to set the maximum amount of memory which
 884           will be used as "low memory", that is, memory which the kernel can
 885           access directly, without having to set up a kernel virtual mapping.
 886           This can be useful in optimizing the layout of kernel virtual
 887           memory.
 888
 889           Say N here unless you know what you are doing.
 890
 891 config LOWMEM_SIZE
 892         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 893         default "0x30000000"
 894
 895 config KERNEL_START_BOOL
 896         bool "Set custom kernel base address"
 897         depends on ADVANCED_OPTIONS
 898         help
 899           This option allows you to set the kernel virtual address at which
 900           the kernel will map low memory (the kernel image will be linked at
 901           this address).  This can be useful in optimizing the virtual memory
 902           layout of the system.
 903
 904           Say N here unless you know what you are doing.
 905
 906 config KERNEL_START
 907         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 908         default "0xc0000000"
 909
 910 config TASK_SIZE_BOOL
 911         bool "Set custom user task size"
 912         depends on ADVANCED_OPTIONS
 913         help
 914           This option allows you to set the amount of virtual address space
 915           allocated to user tasks.  This can be useful in optimizing the
 916           virtual memory layout of the system.
 917
 918           Say N here unless you know what you are doing.
 919
 920 config TASK_SIZE
 921         hex "Size of user task space" if TASK_SIZE_BOOL
 922         default "0x80000000"
 923
 924 config CONSISTENT_START_BOOL
 925         bool "Set custom consistent memory pool address"
 926         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 927         help
 928           This option allows you to set the base virtual address
 929           of the the consistent memory pool.  This pool of virtual
 930           memory is used to make consistent memory allocations.
 931
 932 config CONSISTENT_START
 933         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 934         default "0xff100000" if NOT_COHERENT_CACHE
 935
 936 config CONSISTENT_SIZE_BOOL
 937         bool "Set custom consistent memory pool size"
 938         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 939         help
 940           This option allows you to set the size of the the
 941           consistent memory pool.  This pool of virtual memory
 942           is used to make consistent memory allocations.
 943
 944 config CONSISTENT_SIZE
 945         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 946         default "0x00200000" if NOT_COHERENT_CACHE
 947
 948 config BOOT_LOAD_BOOL
 949         bool "Set the boot link/load address"
 950         depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
 951         help
 952           This option allows you to set the initial load address of the zImage
 953           or zImage.initrd file.  This can be useful if you are on a board
 954           which has a small amount of memory.
 955
 956           Say N here unless you know what you are doing.
 957
 958 config BOOT_LOAD
 959         hex "Link/load address for booting" if BOOT_LOAD_BOOL
 960         default "0x00400000" if 40x || 8xx || 8260
 961         default "0x01000000" if 44x
 962         default "0x00800000"
 963
 964 config PIN_TLB
 965         bool "Pinned Kernel TLBs (860 ONLY)"
 966         depends on ADVANCED_OPTIONS && 8xx
 967 endmenu
 968
 969 if PPC64
 970 config KERNEL_START
 971         hex
 972         default "0xc000000000000000"
 973 endif
 974
 975 source "net/Kconfig"
 976
 977 source "drivers/Kconfig"
 978
 979 source "fs/Kconfig"
 980
 981 # XXX source "arch/ppc/8xx_io/Kconfig"
 982
 983 # XXX source "arch/ppc/8260_io/Kconfig"
 984
 985 source "arch/powerpc/platforms/iseries/Kconfig"
 986
 987 source "lib/Kconfig"
 988
 989 menu "Instrumentation Support"
 990         depends on EXPERIMENTAL
 991
 992 source "arch/powerpc/oprofile/Kconfig"
 993
 994 config KPROBES
 995         bool "Kprobes (EXPERIMENTAL)"
 996         depends on PPC64 && EXPERIMENTAL && MODULES
 997         help
 998           Kprobes allows you to trap at almost any kernel address and
 999           execute a callback function.  register_kprobe() establishes
1000           a probepoint and specifies the callback.  Kprobes is useful
1001           for kernel debugging, non-intrusive instrumentation and testing.
1002           If in doubt, say "N".
1003 endmenu
1004
1005 source "arch/powerpc/Kconfig.debug"
1006
1007 source "security/Kconfig"
1008
1009 config KEYS_COMPAT
1010         bool
1011         depends on COMPAT && KEYS
1012         default y
1013
1014 source "crypto/Kconfig"