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 PPC_PM_NEEDS_RTC_LIB
  15         bool
  16         select RTC_LIB
  17         default y if PM
  18
  19 config PPC32
  20         bool
  21         default y if !PPC64
  22
  23 config 64BIT
  24         bool
  25         default y if PPC64
  26
  27 config PPC_MERGE
  28         def_bool y
  29
  30 config MMU
  31         bool
  32         default y
  33
  34 config GENERIC_HARDIRQS
  35         bool
  36         default y
  37
  38 config IRQ_PER_CPU
  39         bool
  40         default y
  41
  42 config RWSEM_GENERIC_SPINLOCK
  43         bool
  44
  45 config RWSEM_XCHGADD_ALGORITHM
  46         bool
  47         default y
  48
  49 config ARCH_HAS_ILOG2_U32
  50         bool
  51         default y
  52
  53 config ARCH_HAS_ILOG2_U64
  54         bool
  55         default y if 64BIT
  56
  57 config GENERIC_HWEIGHT
  58         bool
  59         default y
  60
  61 config GENERIC_CALIBRATE_DELAY
  62         bool
  63         default y
  64
  65 config GENERIC_FIND_NEXT_BIT
  66         bool
  67         default y
  68
  69 config PPC
  70         bool
  71         default y
  72
  73 config EARLY_PRINTK
  74         bool
  75         default y
  76
  77 config COMPAT
  78         bool
  79         default y if PPC64
  80
  81 config SYSVIPC_COMPAT
  82         bool
  83         depends on COMPAT && SYSVIPC
  84         default y
  85
  86 # All PPC32s use generic nvram driver through ppc_md
  87 config GENERIC_NVRAM
  88         bool
  89         default y if PPC32
  90
  91 config SCHED_NO_NO_OMIT_FRAME_POINTER
  92         bool
  93         default y
  94
  95 config ARCH_MAY_HAVE_PC_FDC
  96         bool
  97         default !PPC_PSERIES || PCI
  98
  99 config PPC_OF
 100         def_bool y
 101
 102 config PPC_UDBG_16550
 103         bool
 104         default n
 105
 106 config GENERIC_TBSYNC
 107         bool
 108         default y if PPC32 && SMP
 109         default n
 110
 111 config AUDIT_ARCH
 112         bool
 113         default y
 114
 115 config GENERIC_BUG
 116         bool
 117         default y
 118         depends on BUG
 119
 120 config SYS_SUPPORTS_APM_EMULATION
 121         bool
 122
 123 config DEFAULT_UIMAGE
 124         bool
 125         help
 126           Used to allow a board to specify it wants a uImage built by default
 127         default n
 128
 129 config PPC64_SWSUSP
 130         bool
 131         depends on PPC64 && (BROKEN || (PPC_PMAC64 && EXPERIMENTAL))
 132         default y
 133
 134 menu "Processor support"
 135 choice
 136         prompt "Processor Type"
 137         depends on PPC32
 138         default 6xx
 139
 140 config CLASSIC32
 141         bool "52xx/6xx/7xx/74xx"
 142         select PPC_FPU
 143         select 6xx
 144         help
 145           There are four families of PowerPC chips supported.  The more common
 146           types (601, 603, 604, 740, 750, 7400), the Motorola embedded
 147           versions (821, 823, 850, 855, 860, 52xx, 82xx, 83xx), the AMCC
 148           embedded versions (403 and 405) and the high end 64 bit Power
 149           processors (POWER 3, POWER4, and IBM PPC970 also known as G5).
 150
 151           This option is the catch-all for 6xx types, including some of the
 152           embedded versions.  Unless there is see an option for the specific
 153           chip family you are using, you want this option.
 154
 155           You do not want this if you are building a kernel for a 64 bit
 156           IBM RS/6000 or an Apple G5, choose 6xx.
 157
 158           If unsure, select this option
 159
 160           Note that the kernel runs in 32-bit mode even on 64-bit chips.
 161
 162 config PPC_82xx
 163         bool "Freescale 82xx"
 164         select 6xx
 165         select PPC_FPU
 166
 167 config PPC_83xx
 168         bool "Freescale 83xx"
 169         select 6xx
 170         select FSL_SOC
 171         select 83xx
 172         select PPC_FPU
 173         select WANT_DEVICE_TREE
 174
 175 config PPC_85xx
 176         bool "Freescale 85xx"
 177         select E500
 178         select FSL_SOC
 179         select 85xx
 180         select WANT_DEVICE_TREE
 181
 182 config PPC_86xx
 183         bool "Freescale 86xx"
 184         select 6xx
 185         select FSL_SOC
 186         select FSL_PCIE
 187         select PPC_FPU
 188         select ALTIVEC
 189         help
 190           The Freescale E600 SoCs have 74xx cores.
 191
 192 config PPC_8xx
 193         bool "Freescale 8xx"
 194         select FSL_SOC
 195         select 8xx
 196
 197 config 40x
 198         bool "AMCC 40x"
 199         select PPC_DCR_NATIVE
 200
 201 config 44x
 202         bool "AMCC 44x"
 203         select PPC_DCR_NATIVE
 204
 205 config E200
 206         bool "Freescale e200"
 207
 208 endchoice
 209
 210 config POWER4_ONLY
 211         bool "Optimize for POWER4"
 212         depends on PPC64
 213         default n
 214         ---help---
 215           Cause the compiler to optimize for POWER4/POWER5/PPC970 processors.
 216           The resulting binary will not work on POWER3 or RS64 processors
 217           when compiled with binutils 2.15 or later.
 218
 219 config POWER3
 220         bool
 221         depends on PPC64
 222         default y if !POWER4_ONLY
 223
 224 config POWER4
 225         depends on PPC64
 226         def_bool y
 227
 228 config 6xx
 229         bool
 230
 231 # this is temp to handle compat with arch=ppc
 232 config 8xx
 233         bool
 234
 235 # this is temp to handle compat with arch=ppc
 236 config 83xx
 237         bool
 238
 239 # this is temp to handle compat with arch=ppc
 240 config 85xx
 241         bool
 242
 243 config E500
 244         bool
 245
 246 config PPC_FPU
 247         bool
 248         default y if PPC64
 249
 250 config PPC_DCR_NATIVE
 251         bool
 252         default n
 253
 254 config PPC_DCR_MMIO
 255         bool
 256         default n
 257
 258 config PPC_DCR
 259         bool
 260         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 261         default y
 262
 263 config PPC_OF_PLATFORM_PCI
 264         bool
 265         depends on PPC64 # not supported on 32 bits yet
 266         default n
 267
 268 config BOOKE
 269         bool
 270         depends on E200 || E500
 271         default y
 272
 273 config FSL_BOOKE
 274         bool
 275         depends on E200 || E500
 276         default y
 277
 278 config PTE_64BIT
 279         bool
 280         depends on 44x || E500
 281         default y if 44x
 282         default y if E500 && PHYS_64BIT
 283
 284 config PHYS_64BIT
 285         bool 'Large physical address support' if E500
 286         depends on 44x || E500
 287         select RESOURCES_64BIT
 288         default y if 44x
 289         ---help---
 290           This option enables kernel support for larger than 32-bit physical
 291           addresses.  This features is not be available on all e500 cores.
 292
 293           If in doubt, say N here.
 294
 295 config ALTIVEC
 296         bool "AltiVec Support"
 297         depends on CLASSIC32 || POWER4
 298         ---help---
 299           This option enables kernel support for the Altivec extensions to the
 300           PowerPC processor. The kernel currently supports saving and restoring
 301           altivec registers, and turning on the 'altivec enable' bit so user
 302           processes can execute altivec instructions.
 303
 304           This option is only usefully if you have a processor that supports
 305           altivec (G4, otherwise known as 74xx series), but does not have
 306           any affect on a non-altivec cpu (it does, however add code to the
 307           kernel).
 308
 309           If in doubt, say Y here.
 310
 311 config SPE
 312         bool "SPE Support"
 313         depends on E200 || E500
 314         default y
 315         ---help---
 316           This option enables kernel support for the Signal Processing
 317           Extensions (SPE) to the PowerPC processor. The kernel currently
 318           supports saving and restoring SPE registers, and turning on the
 319           'spe enable' bit so user processes can execute SPE instructions.
 320
 321           This option is only useful if you have a processor that supports
 322           SPE (e500, otherwise known as 85xx series), but does not have any
 323           effect on a non-spe cpu (it does, however add code to the kernel).
 324
 325           If in doubt, say Y here.
 326
 327 config PPC_STD_MMU
 328         bool
 329         depends on 6xx || POWER3 || POWER4 || PPC64
 330         default y
 331
 332 config PPC_STD_MMU_32
 333         def_bool y
 334         depends on PPC_STD_MMU && PPC32
 335
 336 config VIRT_CPU_ACCOUNTING
 337         bool "Deterministic task and CPU time accounting"
 338         depends on PPC64
 339         default y
 340         help
 341           Select this option to enable more accurate task and CPU time
 342           accounting.  This is done by reading a CPU counter on each
 343           kernel entry and exit and on transitions within the kernel
 344           between system, softirq and hardirq state, so there is a
 345           small performance impact.  This also enables accounting of
 346           stolen time on logically-partitioned systems running on
 347           IBM POWER5-based machines.
 348
 349           If in doubt, say Y here.
 350
 351 config SMP
 352         depends on PPC_STD_MMU
 353         bool "Symmetric multi-processing support"
 354         ---help---
 355           This enables support for systems with more than one CPU. If you have
 356           a system with only one CPU, say N. If you have a system with more
 357           than one CPU, say Y.  Note that the kernel does not currently
 358           support SMP machines with 603/603e/603ev or PPC750 ("G3") processors
 359           since they have inadequate hardware support for multiprocessor
 360           operation.
 361
 362           If you say N here, the kernel will run on single and multiprocessor
 363           machines, but will use only one CPU of a multiprocessor machine. If
 364           you say Y here, the kernel will run on single-processor machines.
 365           On a single-processor machine, the kernel will run faster if you say
 366           N here.
 367
 368           If you don't know what to do here, say N.
 369
 370 config NR_CPUS
 371         int "Maximum number of CPUs (2-128)"
 372         range 2 128
 373         depends on SMP
 374         default "32" if PPC64
 375         default "4"
 376
 377 config NOT_COHERENT_CACHE
 378         bool
 379         depends on 4xx || 8xx || E200
 380         default y
 381 endmenu
 382
 383 source "init/Kconfig"
 384
 385 source "arch/powerpc/platforms/Kconfig"
 386
 387 menu "Kernel options"
 388
 389 config HIGHMEM
 390         bool "High memory support"
 391         depends on PPC32
 392
 393 source kernel/Kconfig.hz
 394 source kernel/Kconfig.preempt
 395 source "fs/Kconfig.binfmt"
 396
 397 # We optimistically allocate largepages from the VM, so make the limit
 398 # large enough (16MB). This badly named config option is actually
 399 # max order + 1
 400 config FORCE_MAX_ZONEORDER
 401         int
 402         depends on PPC64
 403         default "9" if PPC_64K_PAGES
 404         default "13"
 405
 406 config MATH_EMULATION
 407         bool "Math emulation"
 408         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 409         ---help---
 410           Some PowerPC chips designed for embedded applications do not have
 411           a floating-point unit and therefore do not implement the
 412           floating-point instructions in the PowerPC instruction set.  If you
 413           say Y here, the kernel will include code to emulate a floating-point
 414           unit, which will allow programs that use floating-point
 415           instructions to run.
 416
 417 config IOMMU_VMERGE
 418         bool "Enable IOMMU virtual merging (EXPERIMENTAL)"
 419         depends on EXPERIMENTAL && PPC64
 420         default n
 421         help
 422           Cause IO segments sent to a device for DMA to be merged virtually
 423           by the IOMMU when they happen to have been allocated contiguously.
 424           This doesn't add pressure to the IOMMU allocator. However, some
 425           drivers don't support getting large merged segments coming back
 426           from *_map_sg(). Say Y if you know the drivers you are using are
 427           properly handling this case.
 428
 429 config HOTPLUG_CPU
 430         bool "Support for enabling/disabling CPUs"
 431         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 432         ---help---
 433           Say Y here to be able to disable and re-enable individual
 434           CPUs at runtime on SMP machines.
 435
 436           Say N if you are unsure.
 437
 438 config ARCH_ENABLE_MEMORY_HOTPLUG
 439         def_bool y
 440
 441 config KEXEC
 442         bool "kexec system call (EXPERIMENTAL)"
 443         depends on PPC_MULTIPLATFORM && EXPERIMENTAL
 444         help
 445           kexec is a system call that implements the ability to shutdown your
 446           current kernel, and to start another kernel.  It is like a reboot
 447           but it is independent of the system firmware.   And like a reboot
 448           you can start any kernel with it, not just Linux.
 449
 450           The name comes from the similarity to the exec system call.
 451
 452           It is an ongoing process to be certain the hardware in a machine
 453           is properly shutdown, so do not be surprised if this code does not
 454           initially work for you.  It may help to enable device hotplugging
 455           support.  As of this writing the exact hardware interface is
 456           strongly in flux, so no good recommendation can be made.
 457
 458 config CRASH_DUMP
 459         bool "Build a kdump crash kernel (EXPERIMENTAL)"
 460         depends on PPC_MULTIPLATFORM && PPC64 && EXPERIMENTAL
 461         help
 462           Build a kernel suitable for use as a kdump capture kernel.
 463           The kernel will be linked at a different address than normal, and
 464           so can only be used for Kdump.
 465
 466           Don't change this unless you know what you are doing.
 467
 468 config PPCBUG_NVRAM
 469         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 470         default y if PPC_PREP
 471
 472 config IRQ_ALL_CPUS
 473         bool "Distribute interrupts on all CPUs by default"
 474         depends on SMP && !MV64360
 475         help
 476           This option gives the kernel permission to distribute IRQs across
 477           multiple CPUs.  Saying N here will route all IRQs to the first
 478           CPU.  Generally saying Y is safe, although some problems have been
 479           reported with SMP Power Macintoshes with this option enabled.
 480
 481 config NUMA
 482         bool "NUMA support"
 483         depends on PPC64
 484         default y if SMP && PPC_PSERIES
 485
 486 config NODES_SHIFT
 487         int
 488         default "4"
 489         depends on NEED_MULTIPLE_NODES
 490
 491 config ARCH_SELECT_MEMORY_MODEL
 492         def_bool y
 493         depends on PPC64
 494
 495 config ARCH_FLATMEM_ENABLE
 496         def_bool y
 497         depends on (PPC64 && !NUMA) || PPC32
 498
 499 config ARCH_SPARSEMEM_ENABLE
 500         def_bool y
 501         depends on PPC64
 502
 503 config ARCH_SPARSEMEM_DEFAULT
 504         def_bool y
 505         depends on (SMP && PPC_PSERIES) || PPC_PS3
 506
 507 config ARCH_POPULATES_NODE_MAP
 508         def_bool y
 509
 510 source "mm/Kconfig"
 511
 512 config ARCH_MEMORY_PROBE
 513         def_bool y
 514         depends on MEMORY_HOTPLUG
 515
 516 # Some NUMA nodes have memory ranges that span
 517 # other nodes.  Even though a pfn is valid and
 518 # between a node's start and end pfns, it may not
 519 # reside on that node.  See memmap_init_zone()
 520 # for details.
 521 config NODES_SPAN_OTHER_NODES
 522         def_bool y
 523         depends on NEED_MULTIPLE_NODES
 524
 525 config PPC_64K_PAGES
 526         bool "64k page size"
 527         depends on PPC64
 528         help
 529           This option changes the kernel logical page size to 64k. On machines
 530           without processor support for 64k pages, the kernel will simulate
 531           them by loading each individual 4k page on demand transparently,
 532           while on hardware with such support, it will be used to map
 533           normal application pages.
 534
 535 config SCHED_SMT
 536         bool "SMT (Hyperthreading) scheduler support"
 537         depends on PPC64 && SMP
 538         help
 539           SMT scheduler support improves the CPU scheduler's decision making
 540           when dealing with POWER5 cpus at a cost of slightly increased
 541           overhead in some places. If unsure say N here.
 542
 543 config PROC_DEVICETREE
 544         bool "Support for device tree in /proc"
 545         depends on PROC_FS
 546         help
 547           This option adds a device-tree directory under /proc which contains
 548           an image of the device tree that the kernel copies from Open
 549           Firmware or other boot firmware. If unsure, say Y here.
 550
 551 config CMDLINE_BOOL
 552         bool "Default bootloader kernel arguments"
 553
 554 config CMDLINE
 555         string "Initial kernel command string"
 556         depends on CMDLINE_BOOL
 557         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 558         help
 559           On some platforms, there is currently no way for the boot loader to
 560           pass arguments to the kernel. For these platforms, you can supply
 561           some command-line options at build time by entering them here.  In
 562           most cases you will need to specify the root device here.
 563
 564 if !44x || BROKEN
 565 source kernel/power/Kconfig
 566 endif
 567
 568 config SECCOMP
 569         bool "Enable seccomp to safely compute untrusted bytecode"
 570         depends on PROC_FS
 571         default y
 572         help
 573           This kernel feature is useful for number crunching applications
 574           that may need to compute untrusted bytecode during their
 575           execution. By using pipes or other transports made available to
 576           the process as file descriptors supporting the read/write
 577           syscalls, it's possible to isolate those applications in
 578           their own address space using seccomp. Once seccomp is
 579           enabled via /proc/<pid>/seccomp, it cannot be disabled
 580           and the task is only allowed to execute a few safe syscalls
 581           defined by each seccomp mode.
 582
 583           If unsure, say Y. Only embedded should say N here.
 584
 585 config WANT_DEVICE_TREE
 586         bool
 587         default n
 588
 589 config DEVICE_TREE
 590         string "Static device tree source file"
 591         depends on WANT_DEVICE_TREE
 592         help
 593           This specifies the device tree source (.dts) file to be
 594           compiled and included when building the bootwrapper.  If a
 595           relative filename is given, then it will be relative to
 596           arch/powerpc/boot/dts.  If you are not using the bootwrapper,
 597           or do not need to build a dts into the bootwrapper, this
 598           field is ignored.
 599
 600           For example, this is required when building a cuImage target
 601           for an older U-Boot, which cannot pass a device tree itself.
 602           Such a kernel will not work with a newer U-Boot that tries to
 603           pass a device tree (unless you tell it not to).  If your U-Boot
 604           does not mention a device tree in "help bootm", then use the
 605           cuImage target and specify a device tree here.  Otherwise, use
 606           the uImage target and leave this field blank.
 607
 608 endmenu
 609
 610 config ISA_DMA_API
 611         bool
 612         default y
 613
 614 menu "Bus options"
 615
 616 config ISA
 617         bool "Support for ISA-bus hardware"
 618         depends on PPC_PREP || PPC_CHRP
 619         select PPC_I8259
 620         help
 621           Find out whether you have ISA slots on your motherboard.  ISA is the
 622           name of a bus system, i.e. the way the CPU talks to the other stuff
 623           inside your box.  If you have an Apple machine, say N here; if you
 624           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 625           you have an embedded board, consult your board documentation.
 626
 627 config ZONE_DMA
 628         bool
 629         default y
 630
 631 config GENERIC_ISA_DMA
 632         bool
 633         depends on PPC64 || POWER4 || 6xx && !CPM2
 634         default y
 635
 636 config PPC_INDIRECT_PCI
 637         bool
 638         depends on PCI
 639         default y if 40x || 44x
 640         default n
 641
 642 config PPC_INDIRECT_PCI_BE
 643         bool
 644         depends PPC_INDIRECT_PCI
 645         default n
 646
 647 config EISA
 648         bool
 649
 650 config SBUS
 651         bool
 652
 653 config FSL_SOC
 654         bool
 655
 656 config FSL_PCIE
 657         bool
 658         depends on PPC_86xx
 659
 660 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 661 config MCA
 662         bool
 663
 664 config PCI
 665         bool "PCI support" if 40x || CPM2 || PPC_83xx || PPC_85xx || PPC_86xx \
 666                 || PPC_MPC52xx || (EMBEDDED && (PPC_PSERIES || PPC_ISERIES)) \
 667                 || MPC7448HPC2 || PPC_PS3 || PPC_HOLLY
 668         default y if !40x && !CPM2 && !8xx && !APUS && !PPC_83xx \
 669                 && !PPC_85xx && !PPC_86xx
 670         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx && APUS
 671         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 672         help
 673           Find out whether your system includes a PCI bus. PCI is the name of
 674           a bus system, i.e. the way the CPU talks to the other stuff inside
 675           your box.  If you say Y here, the kernel will include drivers and
 676           infrastructure code to support PCI bus devices.
 677
 678 config PCI_DOMAINS
 679         bool
 680         default PCI
 681
 682 config PCI_QSPAN
 683         bool "QSpan PCI"
 684         depends on !4xx && !CPM2 && 8xx
 685         select PPC_I8259
 686         help
 687           Say Y here if you have a system based on a Motorola 8xx-series
 688           embedded processor with a QSPAN PCI interface, otherwise say N.
 689
 690 config PCI_8260
 691         bool
 692         depends on PCI && 8260
 693         select PPC_INDIRECT_PCI
 694         default y
 695
 696 config 8260_PCI9
 697         bool "Enable workaround for MPC826x erratum PCI 9"
 698         depends on PCI_8260 && !ADS8272
 699         default y
 700
 701 choice
 702         prompt "IDMA channel for PCI 9 workaround"
 703         depends on 8260_PCI9
 704
 705 config 8260_PCI9_IDMA1
 706         bool "IDMA1"
 707
 708 config 8260_PCI9_IDMA2
 709         bool "IDMA2"
 710
 711 config 8260_PCI9_IDMA3
 712         bool "IDMA3"
 713
 714 config 8260_PCI9_IDMA4
 715         bool "IDMA4"
 716
 717 endchoice
 718
 719 source "drivers/pci/pcie/Kconfig"
 720
 721 source "drivers/pci/Kconfig"
 722
 723 source "drivers/pcmcia/Kconfig"
 724
 725 source "drivers/pci/hotplug/Kconfig"
 726
 727 endmenu
 728
 729 menu "Advanced setup"
 730         depends on PPC32
 731
 732 config ADVANCED_OPTIONS
 733         bool "Prompt for advanced kernel configuration options"
 734         help
 735           This option will enable prompting for a variety of advanced kernel
 736           configuration options.  These options can cause the kernel to not
 737           work if they are set incorrectly, but can be used to optimize certain
 738           aspects of kernel memory management.
 739
 740           Unless you know what you are doing, say N here.
 741
 742 comment "Default settings for advanced configuration options are used"
 743         depends on !ADVANCED_OPTIONS
 744
 745 config HIGHMEM_START_BOOL
 746         bool "Set high memory pool address"
 747         depends on ADVANCED_OPTIONS && HIGHMEM
 748         help
 749           This option allows you to set the base address of the kernel virtual
 750           area used to map high memory pages.  This can be useful in
 751           optimizing the layout of kernel virtual memory.
 752
 753           Say N here unless you know what you are doing.
 754
 755 config HIGHMEM_START
 756         hex "Virtual start address of high memory pool" if HIGHMEM_START_BOOL
 757         default "0xfe000000"
 758
 759 config LOWMEM_SIZE_BOOL
 760         bool "Set maximum low memory"
 761         depends on ADVANCED_OPTIONS
 762         help
 763           This option allows you to set the maximum amount of memory which
 764           will be used as "low memory", that is, memory which the kernel can
 765           access directly, without having to set up a kernel virtual mapping.
 766           This can be useful in optimizing the layout of kernel virtual
 767           memory.
 768
 769           Say N here unless you know what you are doing.
 770
 771 config LOWMEM_SIZE
 772         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 773         default "0x30000000"
 774
 775 config KERNEL_START_BOOL
 776         bool "Set custom kernel base address"
 777         depends on ADVANCED_OPTIONS
 778         help
 779           This option allows you to set the kernel virtual address at which
 780           the kernel will map low memory (the kernel image will be linked at
 781           this address).  This can be useful in optimizing the virtual memory
 782           layout of the system.
 783
 784           Say N here unless you know what you are doing.
 785
 786 config KERNEL_START
 787         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 788         default "0xc0000000"
 789
 790 config TASK_SIZE_BOOL
 791         bool "Set custom user task size"
 792         depends on ADVANCED_OPTIONS
 793         help
 794           This option allows you to set the amount of virtual address space
 795           allocated to user tasks.  This can be useful in optimizing the
 796           virtual memory layout of the system.
 797
 798           Say N here unless you know what you are doing.
 799
 800 config TASK_SIZE
 801         hex "Size of user task space" if TASK_SIZE_BOOL
 802         default "0x80000000"
 803
 804 config CONSISTENT_START_BOOL
 805         bool "Set custom consistent memory pool address"
 806         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 807         help
 808           This option allows you to set the base virtual address
 809           of the consistent memory pool.  This pool of virtual
 810           memory is used to make consistent memory allocations.
 811
 812 config CONSISTENT_START
 813         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 814         default "0xff100000" if NOT_COHERENT_CACHE
 815
 816 config CONSISTENT_SIZE_BOOL
 817         bool "Set custom consistent memory pool size"
 818         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 819         help
 820           This option allows you to set the size of the
 821           consistent memory pool.  This pool of virtual memory
 822           is used to make consistent memory allocations.
 823
 824 config CONSISTENT_SIZE
 825         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 826         default "0x00200000" if NOT_COHERENT_CACHE
 827
 828 config BOOT_LOAD_BOOL
 829         bool "Set the boot link/load address"
 830         depends on ADVANCED_OPTIONS && !PPC_MULTIPLATFORM
 831         help
 832           This option allows you to set the initial load address of the zImage
 833           or zImage.initrd file.  This can be useful if you are on a board
 834           which has a small amount of memory.
 835
 836           Say N here unless you know what you are doing.
 837
 838 config BOOT_LOAD
 839         hex "Link/load address for booting" if BOOT_LOAD_BOOL
 840         default "0x00400000" if 40x || 8xx || 8260
 841         default "0x01000000" if 44x
 842         default "0x00800000"
 843
 844 config PIN_TLB
 845         bool "Pinned Kernel TLBs (860 ONLY)"
 846         depends on ADVANCED_OPTIONS && 8xx
 847 endmenu
 848
 849 if PPC64
 850 config KERNEL_START
 851         hex
 852         default "0xc000000000000000"
 853 endif
 854
 855 source "net/Kconfig"
 856
 857 source "drivers/Kconfig"
 858
 859 source "fs/Kconfig"
 860
 861 # XXX source "arch/ppc/8xx_io/Kconfig"
 862
 863 # XXX source "arch/ppc/8260_io/Kconfig"
 864
 865 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 866
 867 source "lib/Kconfig"
 868
 869 menu "Instrumentation Support"
 870         depends on EXPERIMENTAL
 871
 872 source "arch/powerpc/oprofile/Kconfig"
 873
 874 config KPROBES
 875         bool "Kprobes (EXPERIMENTAL)"
 876         depends on !BOOKE && !4xx && KALLSYMS && EXPERIMENTAL && MODULES
 877         help
 878           Kprobes allows you to trap at almost any kernel address and
 879           execute a callback function.  register_kprobe() establishes
 880           a probepoint and specifies the callback.  Kprobes is useful
 881           for kernel debugging, non-intrusive instrumentation and testing.
 882           If in doubt, say "N".
 883 endmenu
 884
 885 source "arch/powerpc/Kconfig.debug"
 886
 887 source "security/Kconfig"
 888
 889 config KEYS_COMPAT
 890         bool
 891         depends on COMPAT && KEYS
 892         default y
 893
 894 source "crypto/Kconfig"