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 source "arch/powerpc/platforms/Kconfig.cputype"
   8
   9 config PPC32
  10         bool
  11         default y if !PPC64
  12
  13 config 64BIT
  14         bool
  15         default y if PPC64
  16
  17 config WORD_SIZE
  18         int
  19         default 64 if PPC64
  20         default 32 if !PPC64
  21
  22 config PPC_MERGE
  23         def_bool y
  24
  25 config MMU
  26         bool
  27         default y
  28
  29 config GENERIC_CMOS_UPDATE
  30         def_bool y
  31
  32 config GENERIC_TIME
  33         def_bool y
  34
  35 config GENERIC_TIME_VSYSCALL
  36         def_bool y
  37
  38 config GENERIC_CLOCKEVENTS
  39         def_bool y
  40
  41 config GENERIC_HARDIRQS
  42         bool
  43         default y
  44
  45 config HAVE_SETUP_PER_CPU_AREA
  46         def_bool PPC64
  47
  48 config IRQ_PER_CPU
  49         bool
  50         default y
  51
  52 config STACKTRACE_SUPPORT
  53         bool
  54         default y
  55
  56 config HAVE_LATENCYTOP_SUPPORT
  57         def_bool y
  58
  59 config TRACE_IRQFLAGS_SUPPORT
  60         bool
  61         depends on PPC64
  62         default y
  63
  64 config LOCKDEP_SUPPORT
  65         bool
  66         default y
  67
  68 config RWSEM_GENERIC_SPINLOCK
  69         bool
  70
  71 config RWSEM_XCHGADD_ALGORITHM
  72         bool
  73         default y
  74
  75 config GENERIC_LOCKBREAK
  76         bool
  77         default y
  78         depends on SMP && PREEMPT
  79
  80 config ARCH_HAS_ILOG2_U32
  81         bool
  82         default y
  83
  84 config ARCH_HAS_ILOG2_U64
  85         bool
  86         default y if 64BIT
  87
  88 config GENERIC_HWEIGHT
  89         bool
  90         default y
  91
  92 config GENERIC_CALIBRATE_DELAY
  93         bool
  94         default y
  95
  96 config GENERIC_FIND_NEXT_BIT
  97         bool
  98         default y
  99
 100 config GENERIC_GPIO
 101         bool
 102         help
 103           Generic GPIO API support
 104
 105 config ARCH_NO_VIRT_TO_BUS
 106         def_bool PPC64
 107
 108 config PPC
 109         bool
 110         default y
 111         select HAVE_DYNAMIC_FTRACE
 112         select HAVE_FTRACE
 113         select ARCH_WANT_OPTIONAL_GPIOLIB
 114         select HAVE_IDE
 115         select HAVE_IOREMAP_PROT
 116         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 117         select HAVE_KPROBES
 118         select HAVE_ARCH_KGDB
 119         select HAVE_KRETPROBES
 120         select HAVE_ARCH_TRACEHOOK
 121         select HAVE_LMB
 122         select HAVE_DMA_ATTRS if PPC64
 123         select USE_GENERIC_SMP_HELPERS if SMP
 124         select HAVE_OPROFILE
 125
 126 config EARLY_PRINTK
 127         bool
 128         default y
 129
 130 config COMPAT
 131         bool
 132         default y if PPC64
 133         select COMPAT_BINFMT_ELF
 134
 135 config SYSVIPC_COMPAT
 136         bool
 137         depends on COMPAT && SYSVIPC
 138         default y
 139
 140 # All PPC32s use generic nvram driver through ppc_md
 141 config GENERIC_NVRAM
 142         bool
 143         default y if PPC32
 144
 145 config SCHED_NO_NO_OMIT_FRAME_POINTER
 146         bool
 147         default y
 148
 149 config ARCH_MAY_HAVE_PC_FDC
 150         bool
 151         default !PPC_PSERIES || PCI
 152
 153 config PPC_OF
 154         def_bool y
 155
 156 config OF
 157         def_bool y
 158
 159 config PPC_UDBG_16550
 160         bool
 161         default n
 162
 163 config GENERIC_TBSYNC
 164         bool
 165         default y if PPC32 && SMP
 166         default n
 167
 168 config AUDIT_ARCH
 169         bool
 170         default y
 171
 172 config GENERIC_BUG
 173         bool
 174         default y
 175         depends on BUG
 176
 177 config SYS_SUPPORTS_APM_EMULATION
 178         default y if PMAC_APM_EMU
 179         bool
 180
 181 config DEFAULT_UIMAGE
 182         bool
 183         help
 184           Used to allow a board to specify it wants a uImage built by default
 185         default n
 186
 187 config REDBOOT
 188         bool
 189
 190 config HIBERNATE_32
 191         bool
 192         depends on (PPC_PMAC && !SMP) || BROKEN
 193         default y
 194
 195 config HIBERNATE_64
 196         bool
 197         depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL)
 198         default y
 199
 200 config ARCH_HIBERNATION_POSSIBLE
 201         bool
 202         depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
 203         default y
 204
 205 config ARCH_SUSPEND_POSSIBLE
 206         def_bool y
 207         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx
 208
 209 config PPC_DCR_NATIVE
 210         bool
 211         default n
 212
 213 config PPC_DCR_MMIO
 214         bool
 215         default n
 216
 217 config PPC_DCR
 218         bool
 219         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 220         default y
 221
 222 config PPC_OF_PLATFORM_PCI
 223         bool
 224         depends on PCI
 225         depends on PPC64 # not supported on 32 bits yet
 226         default n
 227
 228 source "init/Kconfig"
 229
 230 source "arch/powerpc/sysdev/Kconfig"
 231 source "arch/powerpc/platforms/Kconfig"
 232
 233 menu "Kernel options"
 234
 235 config HIGHMEM
 236         bool "High memory support"
 237         depends on PPC32
 238
 239 source kernel/time/Kconfig
 240 source kernel/Kconfig.hz
 241 source kernel/Kconfig.preempt
 242 source "fs/Kconfig.binfmt"
 243
 244 config HUGETLB_PAGE_SIZE_VARIABLE
 245         bool
 246         depends on HUGETLB_PAGE
 247         default y
 248
 249 config MATH_EMULATION
 250         bool "Math emulation"
 251         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 252         ---help---
 253           Some PowerPC chips designed for embedded applications do not have
 254           a floating-point unit and therefore do not implement the
 255           floating-point instructions in the PowerPC instruction set.  If you
 256           say Y here, the kernel will include code to emulate a floating-point
 257           unit, which will allow programs that use floating-point
 258           instructions to run.
 259
 260 config 8XX_MINIMAL_FPEMU
 261         bool "Minimal math emulation for 8xx"
 262         depends on 8xx && !MATH_EMULATION
 263         help
 264           Older arch/ppc kernels still emulated a few floating point
 265           instructions such as load and store, even when full math
 266           emulation is disabled.  Say "Y" here if you want to preserve
 267           this behavior.
 268
 269           It is recommended that you build a soft-float userspace instead.
 270
 271 config IOMMU_VMERGE
 272         bool "Enable IOMMU virtual merging"
 273         depends on PPC64
 274         default y
 275         help
 276           Cause IO segments sent to a device for DMA to be merged virtually
 277           by the IOMMU when they happen to have been allocated contiguously.
 278           This doesn't add pressure to the IOMMU allocator. However, some
 279           drivers don't support getting large merged segments coming back
 280           from *_map_sg().
 281
 282           Most drivers don't have this problem; it is safe to say Y here.
 283
 284 config IOMMU_HELPER
 285         def_bool PPC64
 286
 287 config HOTPLUG_CPU
 288         bool "Support for enabling/disabling CPUs"
 289         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 290         ---help---
 291           Say Y here to be able to disable and re-enable individual
 292           CPUs at runtime on SMP machines.
 293
 294           Say N if you are unsure.
 295
 296 config ARCH_ENABLE_MEMORY_HOTPLUG
 297         def_bool y
 298
 299 config ARCH_HAS_WALK_MEMORY
 300         def_bool y
 301
 302 config ARCH_ENABLE_MEMORY_HOTREMOVE
 303         def_bool y
 304
 305 config KEXEC
 306         bool "kexec system call (EXPERIMENTAL)"
 307         depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
 308         help
 309           kexec is a system call that implements the ability to shutdown your
 310           current kernel, and to start another kernel.  It is like a reboot
 311           but it is independent of the system firmware.   And like a reboot
 312           you can start any kernel with it, not just Linux.
 313
 314           The name comes from the similarity to the exec system call.
 315
 316           It is an ongoing process to be certain the hardware in a machine
 317           is properly shutdown, so do not be surprised if this code does not
 318           initially work for you.  It may help to enable device hotplugging
 319           support.  As of this writing the exact hardware interface is
 320           strongly in flux, so no good recommendation can be made.
 321
 322 config CRASH_DUMP
 323         bool "Build a kdump crash kernel"
 324         depends on PPC_MULTIPLATFORM && PPC64
 325         help
 326           Build a kernel suitable for use as a kdump capture kernel.
 327           The kernel will be linked at a different address than normal, and
 328           so can only be used for Kdump.
 329
 330           Don't change this unless you know what you are doing.
 331
 332 config PHYP_DUMP
 333         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 334         depends on PPC_PSERIES && EXPERIMENTAL
 335         help
 336           Hypervisor-assisted dump is meant to be a kdump replacement
 337           offering robustness and speed not possible without system
 338           hypervisor assistence.
 339
 340           If unsure, say "N"
 341
 342 config PPCBUG_NVRAM
 343         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 344         default y if PPC_PREP
 345
 346 config IRQ_ALL_CPUS
 347         bool "Distribute interrupts on all CPUs by default"
 348         depends on SMP && !MV64360
 349         help
 350           This option gives the kernel permission to distribute IRQs across
 351           multiple CPUs.  Saying N here will route all IRQs to the first
 352           CPU.  Generally saying Y is safe, although some problems have been
 353           reported with SMP Power Macintoshes with this option enabled.
 354
 355 config NUMA
 356         bool "NUMA support"
 357         depends on PPC64
 358         default y if SMP && PPC_PSERIES
 359
 360 config NODES_SHIFT
 361         int
 362         default "4"
 363         depends on NEED_MULTIPLE_NODES
 364
 365 config ARCH_SELECT_MEMORY_MODEL
 366         def_bool y
 367         depends on PPC64
 368
 369 config ARCH_FLATMEM_ENABLE
 370         def_bool y
 371         depends on (PPC64 && !NUMA) || PPC32
 372
 373 config ARCH_SPARSEMEM_ENABLE
 374         def_bool y
 375         depends on PPC64
 376         select SPARSEMEM_VMEMMAP_ENABLE
 377
 378 config ARCH_SPARSEMEM_DEFAULT
 379         def_bool y
 380         depends on (SMP && PPC_PSERIES) || PPC_PS3
 381
 382 config ARCH_POPULATES_NODE_MAP
 383         def_bool y
 384
 385 source "mm/Kconfig"
 386
 387 config ARCH_MEMORY_PROBE
 388         def_bool y
 389         depends on MEMORY_HOTPLUG
 390
 391 # Some NUMA nodes have memory ranges that span
 392 # other nodes.  Even though a pfn is valid and
 393 # between a node's start and end pfns, it may not
 394 # reside on that node.  See memmap_init_zone()
 395 # for details.
 396 config NODES_SPAN_OTHER_NODES
 397         def_bool y
 398         depends on NEED_MULTIPLE_NODES
 399
 400 config PPC_HAS_HASH_64K
 401         bool
 402         depends on PPC64
 403         default n
 404
 405 config PPC_64K_PAGES
 406         bool "64k page size"
 407         depends on PPC64
 408         select PPC_HAS_HASH_64K
 409         help
 410           This option changes the kernel logical page size to 64k. On machines
 411           without processor support for 64k pages, the kernel will simulate
 412           them by loading each individual 4k page on demand transparently,
 413           while on hardware with such support, it will be used to map
 414           normal application pages.
 415
 416 config FORCE_MAX_ZONEORDER
 417         int "Maximum zone order"
 418         default "9" if PPC_64K_PAGES
 419         default "13" if PPC64 && !PPC_64K_PAGES
 420         default "11"
 421         help
 422           The kernel memory allocator divides physically contiguous memory
 423           blocks into "zones", where each zone is a power of two number of
 424           pages.  This option selects the largest power of two that the kernel
 425           keeps in the memory allocator.  If you need to allocate very large
 426           blocks of physically contiguous memory, then you may need to
 427           increase this value.
 428
 429           This config option is actually maximum order plus one. For example,
 430           a value of 11 means that the largest free memory block is 2^10 pages.
 431
 432           The page size is not necessarily 4KB.  For example, on 64-bit
 433           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 434           this in mind when choosing a value for this option.
 435
 436 config PPC_SUBPAGE_PROT
 437         bool "Support setting protections for 4k subpages"
 438         depends on PPC_64K_PAGES
 439         help
 440           This option adds support for a system call to allow user programs
 441           to set access permissions (read/write, readonly, or no access)
 442           on the 4k subpages of each 64k page.
 443
 444 config SCHED_SMT
 445         bool "SMT (Hyperthreading) scheduler support"
 446         depends on PPC64 && SMP
 447         help
 448           SMT scheduler support improves the CPU scheduler's decision making
 449           when dealing with POWER5 cpus at a cost of slightly increased
 450           overhead in some places. If unsure say N here.
 451
 452 config PROC_DEVICETREE
 453         bool "Support for device tree in /proc"
 454         depends on PROC_FS
 455         help
 456           This option adds a device-tree directory under /proc which contains
 457           an image of the device tree that the kernel copies from Open
 458           Firmware or other boot firmware. If unsure, say Y here.
 459
 460 config CMDLINE_BOOL
 461         bool "Default bootloader kernel arguments"
 462
 463 config CMDLINE
 464         string "Initial kernel command string"
 465         depends on CMDLINE_BOOL
 466         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 467         help
 468           On some platforms, there is currently no way for the boot loader to
 469           pass arguments to the kernel. For these platforms, you can supply
 470           some command-line options at build time by entering them here.  In
 471           most cases you will need to specify the root device here.
 472
 473 config EXTRA_TARGETS
 474         string "Additional default image types"
 475         help
 476           List additional targets to be built by the bootwrapper here (separated
 477           by spaces).  This is useful for targets that depend of device tree
 478           files in the .dts directory.
 479
 480           Targets in this list will be build as part of the default build
 481           target, or when the user does a 'make zImage' or a
 482           'make zImage.initrd'.
 483
 484           If unsure, leave blank
 485
 486 if !44x || BROKEN
 487 config ARCH_WANTS_FREEZER_CONTROL
 488         def_bool y
 489         depends on ADB_PMU
 490
 491 source kernel/power/Kconfig
 492 endif
 493
 494 config SECCOMP
 495         bool "Enable seccomp to safely compute untrusted bytecode"
 496         depends on PROC_FS
 497         default y
 498         help
 499           This kernel feature is useful for number crunching applications
 500           that may need to compute untrusted bytecode during their
 501           execution. By using pipes or other transports made available to
 502           the process as file descriptors supporting the read/write
 503           syscalls, it's possible to isolate those applications in
 504           their own address space using seccomp. Once seccomp is
 505           enabled via /proc/<pid>/seccomp, it cannot be disabled
 506           and the task is only allowed to execute a few safe syscalls
 507           defined by each seccomp mode.
 508
 509           If unsure, say Y. Only embedded should say N here.
 510
 511 endmenu
 512
 513 config ISA_DMA_API
 514         bool
 515         default !PPC_ISERIES || PCI
 516
 517 menu "Bus options"
 518
 519 config ISA
 520         bool "Support for ISA-bus hardware"
 521         depends on PPC_PREP || PPC_CHRP
 522         select PPC_I8259
 523         help
 524           Find out whether you have ISA slots on your motherboard.  ISA is the
 525           name of a bus system, i.e. the way the CPU talks to the other stuff
 526           inside your box.  If you have an Apple machine, say N here; if you
 527           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 528           you have an embedded board, consult your board documentation.
 529
 530 config ZONE_DMA
 531         bool
 532         default y
 533
 534 config GENERIC_ISA_DMA
 535         bool
 536         depends on PPC64 || POWER4 || 6xx && !CPM2
 537         default y
 538
 539 config PPC_INDIRECT_PCI
 540         bool
 541         depends on PCI
 542         default y if 40x || 44x
 543         default n
 544
 545 config EISA
 546         bool
 547
 548 config SBUS
 549         bool
 550
 551 config FSL_SOC
 552         bool
 553
 554 config FSL_PCI
 555         bool
 556         select PPC_INDIRECT_PCI
 557
 558 config 4xx_SOC
 559         bool
 560
 561 config FSL_LBC
 562         bool
 563         help
 564           Freescale Localbus support
 565
 566 config FSL_GTM
 567         bool
 568         depends on PPC_83xx || QUICC_ENGINE || CPM2
 569         help
 570           Freescale General-purpose Timers support
 571
 572 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 573 config MCA
 574         bool
 575
 576 # Platforms that what PCI turned unconditionally just do select PCI
 577 # in their config node.  Platforms that want to choose at config
 578 # time should select PPC_PCI_CHOICE
 579 config PPC_PCI_CHOICE
 580         bool
 581
 582 config PCI
 583         bool "PCI support" if PPC_PCI_CHOICE
 584         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 585                 && !PPC_85xx && !PPC_86xx
 586         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 587         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 588         select ARCH_SUPPORTS_MSI
 589         help
 590           Find out whether your system includes a PCI bus. PCI is the name of
 591           a bus system, i.e. the way the CPU talks to the other stuff inside
 592           your box.  If you say Y here, the kernel will include drivers and
 593           infrastructure code to support PCI bus devices.
 594
 595 config PCI_DOMAINS
 596         def_bool PCI
 597
 598 config PCI_SYSCALL
 599         def_bool PCI
 600
 601 config PCI_QSPAN
 602         bool "QSpan PCI"
 603         depends on !4xx && !CPM2 && 8xx
 604         select PPC_I8259
 605         help
 606           Say Y here if you have a system based on a Motorola 8xx-series
 607           embedded processor with a QSPAN PCI interface, otherwise say N.
 608
 609 config PCI_8260
 610         bool
 611         depends on PCI && 8260
 612         select PPC_INDIRECT_PCI
 613         default y
 614
 615 config 8260_PCI9
 616         bool "Enable workaround for MPC826x erratum PCI 9"
 617         depends on PCI_8260 && !8272
 618         default y
 619
 620 choice
 621         prompt "IDMA channel for PCI 9 workaround"
 622         depends on 8260_PCI9
 623
 624 config 8260_PCI9_IDMA1
 625         bool "IDMA1"
 626
 627 config 8260_PCI9_IDMA2
 628         bool "IDMA2"
 629
 630 config 8260_PCI9_IDMA3
 631         bool "IDMA3"
 632
 633 config 8260_PCI9_IDMA4
 634         bool "IDMA4"
 635
 636 endchoice
 637
 638 source "drivers/pci/pcie/Kconfig"
 639
 640 source "drivers/pci/Kconfig"
 641
 642 source "drivers/pcmcia/Kconfig"
 643
 644 source "drivers/pci/hotplug/Kconfig"
 645
 646 config HAS_RAPIDIO
 647         bool
 648         default n
 649
 650 config RAPIDIO
 651         bool "RapidIO support"
 652         depends on HAS_RAPIDIO
 653         help
 654           If you say Y here, the kernel will include drivers and
 655           infrastructure code to support RapidIO interconnect devices.
 656
 657 source "drivers/rapidio/Kconfig"
 658
 659 endmenu
 660
 661 menu "Advanced setup"
 662         depends on PPC32
 663
 664 config ADVANCED_OPTIONS
 665         bool "Prompt for advanced kernel configuration options"
 666         help
 667           This option will enable prompting for a variety of advanced kernel
 668           configuration options.  These options can cause the kernel to not
 669           work if they are set incorrectly, but can be used to optimize certain
 670           aspects of kernel memory management.
 671
 672           Unless you know what you are doing, say N here.
 673
 674 comment "Default settings for advanced configuration options are used"
 675         depends on !ADVANCED_OPTIONS
 676
 677 config LOWMEM_SIZE_BOOL
 678         bool "Set maximum low memory"
 679         depends on ADVANCED_OPTIONS
 680         help
 681           This option allows you to set the maximum amount of memory which
 682           will be used as "low memory", that is, memory which the kernel can
 683           access directly, without having to set up a kernel virtual mapping.
 684           This can be useful in optimizing the layout of kernel virtual
 685           memory.
 686
 687           Say N here unless you know what you are doing.
 688
 689 config LOWMEM_SIZE
 690         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 691         default "0x30000000"
 692
 693 config RELOCATABLE
 694         bool "Build a relocatable kernel (EXPERIMENTAL)"
 695         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 696         help
 697           This builds a kernel image that is capable of running at the
 698           location the kernel is loaded at (some alignment restrictions may
 699           exist).
 700
 701           One use is for the kexec on panic case where the recovery kernel
 702           must live at a different physical address than the primary
 703           kernel.
 704
 705           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 706           it has been loaded at and the compile time physical addresses
 707           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 708           setting can still be useful to bootwrappers that need to know the
 709           load location of the kernel (eg. u-boot/mkimage).
 710
 711 config PAGE_OFFSET_BOOL
 712         bool "Set custom page offset address"
 713         depends on ADVANCED_OPTIONS
 714         help
 715           This option allows you to set the kernel virtual address at which
 716           the kernel will map low memory.  This can be useful in optimizing
 717           the virtual memory layout of the system.
 718
 719           Say N here unless you know what you are doing.
 720
 721 config PAGE_OFFSET
 722         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 723         default "0xc0000000"
 724
 725 config KERNEL_START_BOOL
 726         bool "Set custom kernel base address"
 727         depends on ADVANCED_OPTIONS
 728         help
 729           This option allows you to set the kernel virtual address at which
 730           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 731           however there are times (like kdump) that one might not want them
 732           to be the same.
 733
 734           Say N here unless you know what you are doing.
 735
 736 config KERNEL_START
 737         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 738         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 739         default "0xc2000000" if CRASH_DUMP
 740         default "0xc0000000"
 741
 742 config PHYSICAL_START_BOOL
 743         bool "Set physical address where the kernel is loaded"
 744         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 745         help
 746           This gives the physical address where the kernel is loaded.
 747
 748           Say N here unless you know what you are doing.
 749
 750 config PHYSICAL_START
 751         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 752         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
 753         default "0x00000000"
 754
 755 config PHYSICAL_ALIGN
 756         hex
 757         default "0x10000000" if FSL_BOOKE
 758         help
 759           This value puts the alignment restrictions on physical address
 760           where kernel is loaded and run from. Kernel is compiled for an
 761           address which meets above alignment restriction.
 762
 763 config TASK_SIZE_BOOL
 764         bool "Set custom user task size"
 765         depends on ADVANCED_OPTIONS
 766         help
 767           This option allows you to set the amount of virtual address space
 768           allocated to user tasks.  This can be useful in optimizing the
 769           virtual memory layout of the system.
 770
 771           Say N here unless you know what you are doing.
 772
 773 config TASK_SIZE
 774         hex "Size of user task space" if TASK_SIZE_BOOL
 775         default "0x80000000" if PPC_PREP || PPC_8xx
 776         default "0xc0000000"
 777
 778 config CONSISTENT_START_BOOL
 779         bool "Set custom consistent memory pool address"
 780         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 781         help
 782           This option allows you to set the base virtual address
 783           of the consistent memory pool.  This pool of virtual
 784           memory is used to make consistent memory allocations.
 785
 786 config CONSISTENT_START
 787         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 788         default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
 789         default "0xff100000" if NOT_COHERENT_CACHE
 790
 791 config CONSISTENT_SIZE_BOOL
 792         bool "Set custom consistent memory pool size"
 793         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 794         help
 795           This option allows you to set the size of the
 796           consistent memory pool.  This pool of virtual memory
 797           is used to make consistent memory allocations.
 798
 799 config CONSISTENT_SIZE
 800         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 801         default "0x00200000" if NOT_COHERENT_CACHE
 802
 803 config PIN_TLB
 804         bool "Pinned Kernel TLBs (860 ONLY)"
 805         depends on ADVANCED_OPTIONS && 8xx
 806 endmenu
 807
 808 if PPC64
 809 config PAGE_OFFSET
 810         hex
 811         default "0xc000000000000000"
 812 config KERNEL_START
 813         hex
 814         default "0xc000000002000000" if CRASH_DUMP
 815         default "0xc000000000000000"
 816 config PHYSICAL_START
 817         hex
 818         default "0x02000000" if CRASH_DUMP
 819         default "0x00000000"
 820 endif
 821
 822 source "net/Kconfig"
 823
 824 source "drivers/Kconfig"
 825
 826 source "fs/Kconfig"
 827
 828 # XXX source "arch/ppc/8xx_io/Kconfig"
 829
 830 # XXX source "arch/ppc/8260_io/Kconfig"
 831
 832 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 833
 834 source "lib/Kconfig"
 835
 836 source "arch/powerpc/Kconfig.debug"
 837
 838 source "security/Kconfig"
 839
 840 config KEYS_COMPAT
 841         bool
 842         depends on COMPAT && KEYS
 843         default y
 844
 845 source "crypto/Kconfig"
 846
 847 config PPC_CLOCK
 848         bool
 849         default n
 850         select HAVE_CLK
 851
 852 config PPC_LIB_RHEAP
 853         bool
 854
 855 source "arch/powerpc/kvm/Kconfig"