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         default y
 279
 280 config PPC_CHRP
 281         bool "  Common Hardware Reference Platform (CHRP) based machines"
 282         depends on PPC_MULTIPLATFORM && PPC32
 283         default y
 284
 285 config PPC_PMAC
 286         bool "  Apple PowerMac based machines"
 287         depends on PPC_MULTIPLATFORM
 288         default y
 289
 290 config PPC_PMAC64
 291         bool
 292         depends on PPC_PMAC && POWER4
 293         default y
 294
 295 config PPC_PREP
 296         bool "  PowerPC Reference Platform (PReP) based machines"
 297         depends on PPC_MULTIPLATFORM && PPC32
 298         default y
 299
 300 config PPC_MAPLE
 301         depends on PPC_MULTIPLATFORM && PPC64
 302         bool "  Maple 970FX Evaluation Board"
 303         select U3_DART
 304         select MPIC_BROKEN_U3
 305         default n
 306         help
 307           This option enables support for the Maple 970FX Evaluation Board.
 308           For more informations, refer to <http://www.970eval.com>
 309
 310 config PPC_BPA
 311         bool "  Broadband Processor Architecture"
 312         depends on PPC_MULTIPLATFORM && PPC64
 313
 314 config PPC_OF
 315         bool
 316         depends on PPC_MULTIPLATFORM    # for now
 317         default y
 318
 319 config XICS
 320         depends on PPC_PSERIES
 321         bool
 322         default y
 323
 324 config U3_DART
 325         bool
 326         depends on PPC_MULTIPLATFORM && PPC64
 327         default n
 328
 329 config MPIC
 330         depends on PPC_PSERIES || PPC_PMAC || PPC_MAPLE
 331         bool
 332         default y
 333
 334 config MPIC_BROKEN_U3
 335         bool
 336         depends on PPC_MAPLE
 337         default y
 338
 339 config BPA_IIC
 340         depends on PPC_BPA
 341         bool
 342         default y
 343
 344 config IBMVIO
 345         depends on PPC_PSERIES || PPC_ISERIES
 346         bool
 347         default y
 348
 349 source "drivers/cpufreq/Kconfig"
 350
 351 config CPU_FREQ_PMAC
 352         bool "Support for Apple PowerBooks"
 353         depends on CPU_FREQ && ADB_PMU && PPC32
 354         select CPU_FREQ_TABLE
 355         help
 356           This adds support for frequency switching on Apple PowerBooks,
 357           this currently includes some models of iBook & Titanium
 358           PowerBook.
 359
 360 config PPC601_SYNC_FIX
 361         bool "Workarounds for PPC601 bugs"
 362         depends on 6xx && (PPC_PREP || PPC_PMAC)
 363         help
 364           Some versions of the PPC601 (the first PowerPC chip) have bugs which
 365           mean that extra synchronization instructions are required near
 366           certain instructions, typically those that make major changes to the
 367           CPU state.  These extra instructions reduce performance slightly.
 368           If you say N here, these extra instructions will not be included,
 369           resulting in a kernel which will run faster but may not run at all
 370           on some systems with the PPC601 chip.
 371
 372           If in doubt, say Y here.
 373
 374 config TAU
 375         bool "Thermal Management Support"
 376         depends on 6xx
 377         help
 378           G3 and G4 processors have an on-chip temperature sensor called the
 379           'Thermal Assist Unit (TAU)', which, in theory, can measure the on-die
 380           temperature within 2-4 degrees Celsius. This option shows the current
 381           on-die temperature in /proc/cpuinfo if the cpu supports it.
 382
 383           Unfortunately, on some chip revisions, this sensor is very inaccurate
 384           and in some cases, does not work at all, so don't assume the cpu
 385           temp is actually what /proc/cpuinfo says it is.
 386
 387 config TAU_INT
 388         bool "Interrupt driven TAU driver (DANGEROUS)"
 389         depends on TAU
 390         ---help---
 391           The TAU supports an interrupt driven mode which causes an interrupt
 392           whenever the temperature goes out of range. This is the fastest way
 393           to get notified the temp has exceeded a range. With this option off,
 394           a timer is used to re-check the temperature periodically.
 395
 396           However, on some cpus it appears that the TAU interrupt hardware
 397           is buggy and can cause a situation which would lead unexplained hard
 398           lockups.
 399
 400           Unless you are extending the TAU driver, or enjoy kernel/hardware
 401           debugging, leave this option off.
 402
 403 config TAU_AVERAGE
 404         bool "Average high and low temp"
 405         depends on TAU
 406         ---help---
 407           The TAU hardware can compare the temperature to an upper and lower
 408           bound.  The default behavior is to show both the upper and lower
 409           bound in /proc/cpuinfo. If the range is large, the temperature is
 410           either changing a lot, or the TAU hardware is broken (likely on some
 411           G4's). If the range is small (around 4 degrees), the temperature is
 412           relatively stable.  If you say Y here, a single temperature value,
 413           halfway between the upper and lower bounds, will be reported in
 414           /proc/cpuinfo.
 415
 416           If in doubt, say N here.
 417 endmenu
 418
 419 source arch/powerpc/platforms/embedded6xx/Kconfig
 420 source arch/powerpc/platforms/4xx/Kconfig
 421 source arch/powerpc/platforms/85xx/Kconfig
 422 source arch/powerpc/platforms/8xx/Kconfig
 423
 424 menu "Kernel options"
 425
 426 config HIGHMEM
 427         bool "High memory support"
 428         depends on PPC32
 429
 430 source kernel/Kconfig.hz
 431 source kernel/Kconfig.preempt
 432 source "fs/Kconfig.binfmt"
 433
 434 # We optimistically allocate largepages from the VM, so make the limit
 435 # large enough (16MB). This badly named config option is actually
 436 # max order + 1
 437 config FORCE_MAX_ZONEORDER
 438         int
 439         depends on PPC64
 440         default "13"
 441
 442 config MATH_EMULATION
 443         bool "Math emulation"
 444         depends on 4xx || 8xx || E200 || E500
 445         ---help---
 446           Some PowerPC chips designed for embedded applications do not have
 447           a floating-point unit and therefore do not implement the
 448           floating-point instructions in the PowerPC instruction set.  If you
 449           say Y here, the kernel will include code to emulate a floating-point
 450           unit, which will allow programs that use floating-point
 451           instructions to run.
 452
 453 config IOMMU_VMERGE
 454         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 455         depends on EXPERIMENTAL && PPC64
 456         default n
 457         help
 458           Cause IO segments sent to a device for DMA to be merged virtually
 459           by the IOMMU when they happen to have been allocated contiguously.
 460           This doesn't add pressure to the IOMMU allocator. However, some
 461           drivers don't support getting large merged segments coming back
 462           from *_map_sg(). Say Y if you know the drivers you are using are
 463           properly handling this case.
 464
 465 config HOTPLUG_CPU
 466         bool "Support for enabling/disabling CPUs"
 467         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 468         ---help---
 469           Say Y here to be able to disable and re-enable individual
 470           CPUs at runtime on SMP machines.
 471
 472           Say N if you are unsure.
 473
 474 config KEXEC
 475         bool "kexec system call (EXPERIMENTAL)"
 476         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 477         help
 478           kexec is a system call that implements the ability to shutdown your
 479           current kernel, and to start another kernel.  It is like a reboot
 480           but it is indepedent of the system firmware.   And like a reboot
 481           you can start any kernel with it, not just Linux.
 482
 483           The name comes from the similiarity to the exec system call.
 484
 485           It is an ongoing process to be certain the hardware in a machine
 486           is properly shutdown, so do not be surprised if this code does not
 487           initially work for you.  It may help to enable device hotplugging
 488           support.  As of this writing the exact hardware interface is
 489           strongly in flux, so no good recommendation can be made.
 490
 491 config EMBEDDEDBOOT
 492         bool
 493         depends on 8xx || 8260
 494         default y
 495
 496 config PC_KEYBOARD
 497         bool "PC PS/2 style Keyboard"
 498         depends on 4xx || CPM2
 499
 500 config PPCBUG_NVRAM
 501         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 502         default y if PPC_PREP
 503
 504 config IRQ_ALL_CPUS
 505         bool "Distribute interrupts on all CPUs by default"
 506         depends on SMP && !MV64360
 507         help
 508           This option gives the kernel permission to distribute IRQs across
 509           multiple CPUs.  Saying N here will route all IRQs to the first
 510           CPU.  Generally saying Y is safe, although some problems have been
 511           reported with SMP Power Macintoshes with this option enabled.
 512
 513 source "arch/powerpc/platforms/pseries/Kconfig"
 514
 515 config ARCH_SELECT_MEMORY_MODEL
 516         def_bool y
 517         depends on PPC64
 518
 519 config ARCH_FLATMEM_ENABLE
 520        def_bool y
 521        depends on PPC64 && !NUMA
 522
 523 config ARCH_DISCONTIGMEM_ENABLE
 524         def_bool y
 525         depends on SMP && PPC_PSERIES
 526
 527 config ARCH_DISCONTIGMEM_DEFAULT
 528         def_bool y
 529         depends on ARCH_DISCONTIGMEM_ENABLE
 530
 531 config ARCH_FLATMEM_ENABLE
 532         def_bool y
 533         depends on PPC64
 534
 535 config ARCH_SPARSEMEM_ENABLE
 536         def_bool y
 537         depends on ARCH_DISCONTIGMEM_ENABLE
 538
 539 source "mm/Kconfig"
 540
 541 config HAVE_ARCH_EARLY_PFN_TO_NID
 542         def_bool y
 543         depends on NEED_MULTIPLE_NODES
 544
 545 # Some NUMA nodes have memory ranges that span
 546 # other nodes.  Even though a pfn is valid and
 547 # between a node's start and end pfns, it may not
 548 # reside on that node.
 549 #
 550 # This is a relatively temporary hack that should
 551 # be able to go away when sparsemem is fully in
 552 # place
 553
 554 config NODES_SPAN_OTHER_NODES
 555         def_bool y
 556         depends on NEED_MULTIPLE_NODES
 557
 558 config NUMA
 559         bool "NUMA support"
 560         default y if DISCONTIGMEM || SPARSEMEM
 561
 562 config SCHED_SMT
 563         bool "SMT (Hyperthreading) scheduler support"
 564         depends on PPC64 && SMP
 565         default off
 566         help
 567           SMT scheduler support improves the CPU scheduler's decision making
 568           when dealing with POWER5 cpus at a cost of slightly increased
 569           overhead in some places. If unsure say N here.
 570
 571 config PROC_DEVICETREE
 572         bool "Support for Open Firmware device tree in /proc"
 573         depends on PPC_OF && PROC_FS
 574         help
 575           This option adds a device-tree directory under /proc which contains
 576           an image of the device tree that the kernel copies from Open
 577           Firmware. If unsure, say Y here.
 578
 579 source "arch/powerpc/platforms/prep/Kconfig"
 580
 581 config CMDLINE_BOOL
 582         bool "Default bootloader kernel arguments"
 583         depends on !PPC_ISERIES
 584
 585 config CMDLINE
 586         string "Initial kernel command string"
 587         depends on CMDLINE_BOOL
 588         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 589         help
 590           On some platforms, there is currently no way for the boot loader to
 591           pass arguments to the kernel. For these platforms, you can supply
 592           some command-line options at build time by entering them here.  In
 593           most cases you will need to specify the root device here.
 594
 595 if !44x || BROKEN
 596 source kernel/power/Kconfig
 597 endif
 598
 599 config SECCOMP
 600         bool "Enable seccomp to safely compute untrusted bytecode"
 601         depends on PROC_FS
 602         default y
 603         help
 604           This kernel feature is useful for number crunching applications
 605           that may need to compute untrusted bytecode during their
 606           execution. By using pipes or other transports made available to
 607           the process as file descriptors supporting the read/write
 608           syscalls, it's possible to isolate those applications in
 609           their own address space using seccomp. Once seccomp is
 610           enabled via /proc/<pid>/seccomp, it cannot be disabled
 611           and the task is only allowed to execute a few safe syscalls
 612           defined by each seccomp mode.
 613
 614           If unsure, say Y. Only embedded should say N here.
 615
 616 endmenu
 617
 618 config ISA_DMA_API
 619         bool
 620         default y
 621
 622 menu "Bus options"
 623
 624 config ISA
 625         bool "Support for ISA-bus hardware"
 626         depends on PPC_PREP || PPC_CHRP
 627         help
 628           Find out whether you have ISA slots on your motherboard.  ISA is the
 629           name of a bus system, i.e. the way the CPU talks to the other stuff
 630           inside your box.  If you have an Apple machine, say N here; if you
 631           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 632           you have an embedded board, consult your board documentation.
 633
 634 config GENERIC_ISA_DMA
 635         bool
 636         depends on PPC64 || POWER4 || 6xx && !CPM2
 637         default y
 638
 639 config EISA
 640         bool
 641
 642 config SBUS
 643         bool
 644
 645 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 646 config MCA
 647         bool
 648
 649 config PCI
 650         bool "PCI support" if 40x || CPM2 || 83xx || 85xx || PPC_MPC52xx || (EMBEDDED && PPC_ISERIES)
 651         default y if !40x && !CPM2 && !8xx && !APUS && !83xx && !85xx
 652         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
 653         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 654         help
 655           Find out whether your system includes a PCI bus. PCI is the name of
 656           a bus system, i.e. the way the CPU talks to the other stuff inside
 657           your box.  If you say Y here, the kernel will include drivers and
 658           infrastructure code to support PCI bus devices.
 659
 660 config PCI_DOMAINS
 661         bool
 662         default PCI
 663
 664 config MPC83xx_PCI2
 665         bool "  Supprt for 2nd PCI host controller"
 666         depends on PCI && MPC834x
 667         default y if MPC834x_SYS
 668
 669 config PCI_QSPAN
 670         bool "QSpan PCI"
 671         depends on !4xx && !CPM2 && 8xx
 672         help
 673           Say Y here if you have a system based on a Motorola 8xx-series
 674           embedded processor with a QSPAN PCI interface, otherwise say N.
 675
 676 config PCI_8260
 677         bool
 678         depends on PCI && 8260
 679         default y
 680
 681 config 8260_PCI9
 682         bool "  Enable workaround for MPC826x erratum PCI 9"
 683         depends on PCI_8260 && !ADS8272
 684         default y
 685
 686 choice
 687         prompt "  IDMA channel for PCI 9 workaround"
 688         depends on 8260_PCI9
 689
 690 config 8260_PCI9_IDMA1
 691         bool "IDMA1"
 692
 693 config 8260_PCI9_IDMA2
 694         bool "IDMA2"
 695
 696 config 8260_PCI9_IDMA3
 697         bool "IDMA3"
 698
 699 config 8260_PCI9_IDMA4
 700         bool "IDMA4"
 701
 702 endchoice
 703
 704 source "drivers/pci/Kconfig"
 705
 706 source "drivers/pcmcia/Kconfig"
 707
 708 source "drivers/pci/hotplug/Kconfig"
 709
 710 endmenu
 711
 712 menu "Advanced setup"
 713         depends on PPC32
 714
 715 config ADVANCED_OPTIONS
 716         bool "Prompt for advanced kernel configuration options"
 717         help
 718           This option will enable prompting for a variety of advanced kernel
 719           configuration options.  These options can cause the kernel to not
 720           work if they are set incorrectly, but can be used to optimize certain
 721           aspects of kernel memory management.
 722
 723           Unless you know what you are doing, say N here.
 724
 725 comment "Default settings for advanced configuration options are used"
 726         depends on !ADVANCED_OPTIONS
 727
 728 config HIGHMEM_START_BOOL
 729         bool "Set high memory pool address"
 730         depends on ADVANCED_OPTIONS && HIGHMEM
 731         help
 732           This option allows you to set the base address of the kernel virtual
 733           area used to map high memory pages.  This can be useful in
 734           optimizing the layout of kernel virtual memory.
 735
 736           Say N here unless you know what you are doing.
 737
 738 config HIGHMEM_START
 739         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
 740         default "0xfe000000"
 741
 742 config LOWMEM_SIZE_BOOL
 743         bool "Set maximum low memory"
 744         depends on ADVANCED_OPTIONS
 745         help
 746           This option allows you to set the maximum amount of memory which
 747           will be used as "low memory", that is, memory which the kernel can
 748           access directly, without having to set up a kernel virtual mapping.
 749           This can be useful in optimizing the layout of kernel virtual
 750           memory.
 751
 752           Say N here unless you know what you are doing.
 753
 754 config LOWMEM_SIZE
 755         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 756         default "0x30000000"
 757
 758 config KERNEL_START_BOOL
 759         bool "Set custom kernel base address"
 760         depends on ADVANCED_OPTIONS
 761         help
 762           This option allows you to set the kernel virtual address at which
 763           the kernel will map low memory (the kernel image will be linked at
 764           this address).  This can be useful in optimizing the virtual memory
 765           layout of the system.
 766
 767           Say N here unless you know what you are doing.
 768
 769 config KERNEL_START
 770         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 771         default "0xc0000000"
 772
 773 config TASK_SIZE_BOOL
 774         bool "Set custom user task size"
 775         depends on ADVANCED_OPTIONS
 776         help
 777           This option allows you to set the amount of virtual address space
 778           allocated to user tasks.  This can be useful in optimizing the
 779           virtual memory layout of the system.
 780
 781           Say N here unless you know what you are doing.
 782
 783 config TASK_SIZE
 784         hex "Size of user task space" if TASK_SIZE_BOOL
 785         default "0x80000000"
 786
 787 config CONSISTENT_START_BOOL
 788         bool "Set custom consistent memory pool address"
 789         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 790         help
 791           This option allows you to set the base virtual address
 792           of the the consistent memory pool.  This pool of virtual
 793           memory is used to make consistent memory allocations.
 794
 795 config CONSISTENT_START
 796         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 797         default "0xff100000" if NOT_COHERENT_CACHE
 798
 799 config CONSISTENT_SIZE_BOOL
 800         bool "Set custom consistent memory pool size"
 801         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 802         help
 803           This option allows you to set the size of the the
 804           consistent memory pool.  This pool of virtual memory
 805           is used to make consistent memory allocations.
 806
 807 config CONSISTENT_SIZE
 808         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 809         default "0x00200000" if NOT_COHERENT_CACHE
 810
 811 config BOOT_LOAD_BOOL
 812         bool "Set the boot link/load address"
 813         depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
 814         help
 815           This option allows you to set the initial load address of the zImage
 816           or zImage.initrd file.  This can be useful if you are on a board
 817           which has a small amount of memory.
 818
 819           Say N here unless you know what you are doing.
 820
 821 config BOOT_LOAD
 822         hex "Link/load address for booting" if BOOT_LOAD_BOOL
 823         default "0x00400000" if 40x || 8xx || 8260
 824         default "0x01000000" if 44x
 825         default "0x00800000"
 826
 827 config PIN_TLB
 828         bool "Pinned Kernel TLBs (860 ONLY)"
 829         depends on ADVANCED_OPTIONS && 8xx
 830 endmenu
 831
 832 if PPC64
 833 config KERNEL_START
 834         hex
 835         default "0xc000000000000000"
 836 endif
 837
 838 source "net/Kconfig"
 839
 840 source "drivers/Kconfig"
 841
 842 source "fs/Kconfig"
 843
 844 # XXX source "arch/ppc/8xx_io/Kconfig"
 845
 846 # XXX source "arch/ppc/8260_io/Kconfig"
 847
 848 source "arch/powerpc/platforms/iseries/Kconfig"
 849
 850 source "lib/Kconfig"
 851
 852 source "arch/powerpc/oprofile/Kconfig"
 853
 854 source "arch/powerpc/Kconfig.debug"
 855
 856 source "security/Kconfig"
 857
 858 config KEYS_COMPAT
 859         bool
 860         depends on COMPAT && KEYS
 861         default y
 862
 863 source "crypto/Kconfig"