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 ARCH_PHYS_ADDR_T_64BIT
  23        def_bool PPC64 || PHYS_64BIT
  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_FUNCTION_TRACER
 112         select ARCH_WANT_OPTIONAL_GPIOLIB
 113         select HAVE_IDE
 114         select HAVE_IOREMAP_PROT
 115         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 116         select HAVE_KPROBES
 117         select HAVE_ARCH_KGDB
 118         select HAVE_KRETPROBES
 119         select HAVE_ARCH_TRACEHOOK
 120         select HAVE_LMB
 121         select HAVE_DMA_ATTRS if PPC64
 122         select USE_GENERIC_SMP_HELPERS if SMP
 123         select HAVE_OPROFILE
 124
 125 config EARLY_PRINTK
 126         bool
 127         default y
 128
 129 config COMPAT
 130         bool
 131         default y if PPC64
 132         select COMPAT_BINFMT_ELF
 133
 134 config SYSVIPC_COMPAT
 135         bool
 136         depends on COMPAT && SYSVIPC
 137         default y
 138
 139 # All PPC32s use generic nvram driver through ppc_md
 140 config GENERIC_NVRAM
 141         bool
 142         default y if PPC32
 143
 144 config SCHED_NO_NO_OMIT_FRAME_POINTER
 145         bool
 146         default y
 147
 148 config ARCH_MAY_HAVE_PC_FDC
 149         bool
 150         default !PPC_PSERIES || PCI
 151
 152 config PPC_OF
 153         def_bool y
 154
 155 config OF
 156         def_bool y
 157
 158 config PPC_UDBG_16550
 159         bool
 160         default n
 161
 162 config GENERIC_TBSYNC
 163         bool
 164         default y if PPC32 && SMP
 165         default n
 166
 167 config AUDIT_ARCH
 168         bool
 169         default y
 170
 171 config GENERIC_BUG
 172         bool
 173         default y
 174         depends on BUG
 175
 176 config SYS_SUPPORTS_APM_EMULATION
 177         default y if PMAC_APM_EMU
 178         bool
 179
 180 config DEFAULT_UIMAGE
 181         bool
 182         help
 183           Used to allow a board to specify it wants a uImage built by default
 184         default n
 185
 186 config REDBOOT
 187         bool
 188
 189 config HIBERNATE_32
 190         bool
 191         depends on (PPC_PMAC && !SMP) || BROKEN
 192         default y
 193
 194 config HIBERNATE_64
 195         bool
 196         depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL)
 197         default y
 198
 199 config ARCH_HIBERNATION_POSSIBLE
 200         bool
 201         depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
 202         default y
 203
 204 config ARCH_SUSPEND_POSSIBLE
 205         def_bool y
 206         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx
 207
 208 config PPC_DCR_NATIVE
 209         bool
 210         default n
 211
 212 config PPC_DCR_MMIO
 213         bool
 214         default n
 215
 216 config PPC_DCR
 217         bool
 218         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 219         default y
 220
 221 config PPC_OF_PLATFORM_PCI
 222         bool
 223         depends on PCI
 224         depends on PPC64 # not supported on 32 bits yet
 225         default n
 226
 227 source "init/Kconfig"
 228
 229 source "kernel/Kconfig.freezer"
 230
 231 source "arch/powerpc/sysdev/Kconfig"
 232 source "arch/powerpc/platforms/Kconfig"
 233
 234 menu "Kernel options"
 235
 236 config HIGHMEM
 237         bool "High memory support"
 238         depends on PPC32
 239
 240 source kernel/time/Kconfig
 241 source kernel/Kconfig.hz
 242 source kernel/Kconfig.preempt
 243 source "fs/Kconfig.binfmt"
 244
 245 config HUGETLB_PAGE_SIZE_VARIABLE
 246         bool
 247         depends on HUGETLB_PAGE
 248         default y
 249
 250 config MATH_EMULATION
 251         bool "Math emulation"
 252         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 253         ---help---
 254           Some PowerPC chips designed for embedded applications do not have
 255           a floating-point unit and therefore do not implement the
 256           floating-point instructions in the PowerPC instruction set.  If you
 257           say Y here, the kernel will include code to emulate a floating-point
 258           unit, which will allow programs that use floating-point
 259           instructions to run.
 260
 261 config 8XX_MINIMAL_FPEMU
 262         bool "Minimal math emulation for 8xx"
 263         depends on 8xx && !MATH_EMULATION
 264         help
 265           Older arch/ppc kernels still emulated a few floating point
 266           instructions such as load and store, even when full math
 267           emulation is disabled.  Say "Y" here if you want to preserve
 268           this behavior.
 269
 270           It is recommended that you build a soft-float userspace instead.
 271
 272 config IOMMU_VMERGE
 273         bool "Enable IOMMU virtual merging"
 274         depends on PPC64
 275         default y
 276         help
 277           Cause IO segments sent to a device for DMA to be merged virtually
 278           by the IOMMU when they happen to have been allocated contiguously.
 279           This doesn't add pressure to the IOMMU allocator. However, some
 280           drivers don't support getting large merged segments coming back
 281           from *_map_sg().
 282
 283           Most drivers don't have this problem; it is safe to say Y here.
 284
 285 config IOMMU_HELPER
 286         def_bool PPC64
 287
 288 config HOTPLUG_CPU
 289         bool "Support for enabling/disabling CPUs"
 290         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 291         ---help---
 292           Say Y here to be able to disable and re-enable individual
 293           CPUs at runtime on SMP machines.
 294
 295           Say N if you are unsure.
 296
 297 config ARCH_ENABLE_MEMORY_HOTPLUG
 298         def_bool y
 299
 300 config ARCH_HAS_WALK_MEMORY
 301         def_bool y
 302
 303 config ARCH_ENABLE_MEMORY_HOTREMOVE
 304         def_bool y
 305
 306 config KEXEC
 307         bool "kexec system call (EXPERIMENTAL)"
 308         depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
 309         help
 310           kexec is a system call that implements the ability to shutdown your
 311           current kernel, and to start another kernel.  It is like a reboot
 312           but it is independent of the system firmware.   And like a reboot
 313           you can start any kernel with it, not just Linux.
 314
 315           The name comes from the similarity to the exec system call.
 316
 317           It is an ongoing process to be certain the hardware in a machine
 318           is properly shutdown, so do not be surprised if this code does not
 319           initially work for you.  It may help to enable device hotplugging
 320           support.  As of this writing the exact hardware interface is
 321           strongly in flux, so no good recommendation can be made.
 322
 323 config CRASH_DUMP
 324         bool "Build a kdump crash kernel"
 325         depends on PPC_MULTIPLATFORM && PPC64 && RELOCATABLE
 326         help
 327           Build a kernel suitable for use as a kdump capture kernel.
 328           The same kernel binary can be used as production kernel and dump
 329           capture kernel.
 330
 331 config PHYP_DUMP
 332         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 333         depends on PPC_PSERIES && EXPERIMENTAL
 334         help
 335           Hypervisor-assisted dump is meant to be a kdump replacement
 336           offering robustness and speed not possible without system
 337           hypervisor assistence.
 338
 339           If unsure, say "N"
 340
 341 config PPCBUG_NVRAM
 342         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 343         default y if PPC_PREP
 344
 345 config IRQ_ALL_CPUS
 346         bool "Distribute interrupts on all CPUs by default"
 347         depends on SMP && !MV64360
 348         help
 349           This option gives the kernel permission to distribute IRQs across
 350           multiple CPUs.  Saying N here will route all IRQs to the first
 351           CPU.  Generally saying Y is safe, although some problems have been
 352           reported with SMP Power Macintoshes with this option enabled.
 353
 354 config NUMA
 355         bool "NUMA support"
 356         depends on PPC64
 357         default y if SMP && PPC_PSERIES
 358
 359 config NODES_SHIFT
 360         int
 361         default "4"
 362         depends on NEED_MULTIPLE_NODES
 363
 364 config ARCH_SELECT_MEMORY_MODEL
 365         def_bool y
 366         depends on PPC64
 367
 368 config ARCH_FLATMEM_ENABLE
 369         def_bool y
 370         depends on (PPC64 && !NUMA) || PPC32
 371
 372 config ARCH_SPARSEMEM_ENABLE
 373         def_bool y
 374         depends on PPC64
 375         select SPARSEMEM_VMEMMAP_ENABLE
 376
 377 config ARCH_SPARSEMEM_DEFAULT
 378         def_bool y
 379         depends on (SMP && PPC_PSERIES) || PPC_PS3
 380
 381 config ARCH_POPULATES_NODE_MAP
 382         def_bool y
 383
 384 source "mm/Kconfig"
 385
 386 config ARCH_MEMORY_PROBE
 387         def_bool y
 388         depends on MEMORY_HOTPLUG
 389
 390 # Some NUMA nodes have memory ranges that span
 391 # other nodes.  Even though a pfn is valid and
 392 # between a node's start and end pfns, it may not
 393 # reside on that node.  See memmap_init_zone()
 394 # for details.
 395 config NODES_SPAN_OTHER_NODES
 396         def_bool y
 397         depends on NEED_MULTIPLE_NODES
 398
 399 config PPC_HAS_HASH_64K
 400         bool
 401         depends on PPC64
 402         default n
 403
 404 config PPC_64K_PAGES
 405         bool "64k page size"
 406         depends on PPC64
 407         select PPC_HAS_HASH_64K
 408         help
 409           This option changes the kernel logical page size to 64k. On machines
 410           without processor support for 64k pages, the kernel will simulate
 411           them by loading each individual 4k page on demand transparently,
 412           while on hardware with such support, it will be used to map
 413           normal application pages.
 414
 415 config FORCE_MAX_ZONEORDER
 416         int "Maximum zone order"
 417         range 9 64 if PPC_64K_PAGES
 418         default "9" if PPC_64K_PAGES
 419         range 13 64 if PPC64 && !PPC_64K_PAGES
 420         default "13" if PPC64 && !PPC_64K_PAGES
 421         range 11 64
 422         default "11"
 423         help
 424           The kernel memory allocator divides physically contiguous memory
 425           blocks into "zones", where each zone is a power of two number of
 426           pages.  This option selects the largest power of two that the kernel
 427           keeps in the memory allocator.  If you need to allocate very large
 428           blocks of physically contiguous memory, then you may need to
 429           increase this value.
 430
 431           This config option is actually maximum order plus one. For example,
 432           a value of 11 means that the largest free memory block is 2^10 pages.
 433
 434           The page size is not necessarily 4KB.  For example, on 64-bit
 435           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 436           this in mind when choosing a value for this option.
 437
 438 config PPC_SUBPAGE_PROT
 439         bool "Support setting protections for 4k subpages"
 440         depends on PPC_64K_PAGES
 441         help
 442           This option adds support for a system call to allow user programs
 443           to set access permissions (read/write, readonly, or no access)
 444           on the 4k subpages of each 64k page.
 445
 446 config SCHED_SMT
 447         bool "SMT (Hyperthreading) scheduler support"
 448         depends on PPC64 && SMP
 449         help
 450           SMT scheduler support improves the CPU scheduler's decision making
 451           when dealing with POWER5 cpus at a cost of slightly increased
 452           overhead in some places. If unsure say N here.
 453
 454 config PROC_DEVICETREE
 455         bool "Support for device tree in /proc"
 456         depends on PROC_FS
 457         help
 458           This option adds a device-tree directory under /proc which contains
 459           an image of the device tree that the kernel copies from Open
 460           Firmware or other boot firmware. If unsure, say Y here.
 461
 462 config CMDLINE_BOOL
 463         bool "Default bootloader kernel arguments"
 464
 465 config CMDLINE
 466         string "Initial kernel command string"
 467         depends on CMDLINE_BOOL
 468         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 469         help
 470           On some platforms, there is currently no way for the boot loader to
 471           pass arguments to the kernel. For these platforms, you can supply
 472           some command-line options at build time by entering them here.  In
 473           most cases you will need to specify the root device here.
 474
 475 config EXTRA_TARGETS
 476         string "Additional default image types"
 477         help
 478           List additional targets to be built by the bootwrapper here (separated
 479           by spaces).  This is useful for targets that depend of device tree
 480           files in the .dts directory.
 481
 482           Targets in this list will be build as part of the default build
 483           target, or when the user does a 'make zImage' or a
 484           'make zImage.initrd'.
 485
 486           If unsure, leave blank
 487
 488 if !44x || BROKEN
 489 config ARCH_WANTS_FREEZER_CONTROL
 490         def_bool y
 491         depends on ADB_PMU
 492
 493 source kernel/power/Kconfig
 494 endif
 495
 496 config SECCOMP
 497         bool "Enable seccomp to safely compute untrusted bytecode"
 498         depends on PROC_FS
 499         default y
 500         help
 501           This kernel feature is useful for number crunching applications
 502           that may need to compute untrusted bytecode during their
 503           execution. By using pipes or other transports made available to
 504           the process as file descriptors supporting the read/write
 505           syscalls, it's possible to isolate those applications in
 506           their own address space using seccomp. Once seccomp is
 507           enabled via /proc/<pid>/seccomp, it cannot be disabled
 508           and the task is only allowed to execute a few safe syscalls
 509           defined by each seccomp mode.
 510
 511           If unsure, say Y. Only embedded should say N here.
 512
 513 endmenu
 514
 515 config ISA_DMA_API
 516         bool
 517         default !PPC_ISERIES || PCI
 518
 519 menu "Bus options"
 520
 521 config ISA
 522         bool "Support for ISA-bus hardware"
 523         depends on PPC_PREP || PPC_CHRP
 524         select PPC_I8259
 525         help
 526           Find out whether you have ISA slots on your motherboard.  ISA is the
 527           name of a bus system, i.e. the way the CPU talks to the other stuff
 528           inside your box.  If you have an Apple machine, say N here; if you
 529           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 530           you have an embedded board, consult your board documentation.
 531
 532 config ZONE_DMA
 533         bool
 534         default y
 535
 536 config GENERIC_ISA_DMA
 537         bool
 538         depends on PPC64 || POWER4 || 6xx && !CPM2
 539         default y
 540
 541 config PPC_INDIRECT_PCI
 542         bool
 543         depends on PCI
 544         default y if 40x || 44x
 545         default n
 546
 547 config EISA
 548         bool
 549
 550 config SBUS
 551         bool
 552
 553 config FSL_SOC
 554         bool
 555
 556 config FSL_PCI
 557         bool
 558         select PPC_INDIRECT_PCI
 559
 560 config 4xx_SOC
 561         bool
 562
 563 config FSL_LBC
 564         bool
 565         help
 566           Freescale Localbus support
 567
 568 config FSL_GTM
 569         bool
 570         depends on PPC_83xx || QUICC_ENGINE || CPM2
 571         help
 572           Freescale General-purpose Timers support
 573
 574 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 575 config MCA
 576         bool
 577
 578 # Platforms that what PCI turned unconditionally just do select PCI
 579 # in their config node.  Platforms that want to choose at config
 580 # time should select PPC_PCI_CHOICE
 581 config PPC_PCI_CHOICE
 582         bool
 583
 584 config PCI
 585         bool "PCI support" if PPC_PCI_CHOICE
 586         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 587                 && !PPC_85xx && !PPC_86xx
 588         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 589         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 590         select ARCH_SUPPORTS_MSI
 591         help
 592           Find out whether your system includes a PCI bus. PCI is the name of
 593           a bus system, i.e. the way the CPU talks to the other stuff inside
 594           your box.  If you say Y here, the kernel will include drivers and
 595           infrastructure code to support PCI bus devices.
 596
 597 config PCI_DOMAINS
 598         def_bool PCI
 599
 600 config PCI_SYSCALL
 601         def_bool PCI
 602
 603 config PCI_QSPAN
 604         bool "QSpan PCI"
 605         depends on !4xx && !CPM2 && 8xx
 606         select PPC_I8259
 607         help
 608           Say Y here if you have a system based on a Motorola 8xx-series
 609           embedded processor with a QSPAN PCI interface, otherwise say N.
 610
 611 config PCI_8260
 612         bool
 613         depends on PCI && 8260
 614         select PPC_INDIRECT_PCI
 615         default y
 616
 617 config 8260_PCI9
 618         bool "Enable workaround for MPC826x erratum PCI 9"
 619         depends on PCI_8260 && !8272
 620         default y
 621
 622 choice
 623         prompt "IDMA channel for PCI 9 workaround"
 624         depends on 8260_PCI9
 625
 626 config 8260_PCI9_IDMA1
 627         bool "IDMA1"
 628
 629 config 8260_PCI9_IDMA2
 630         bool "IDMA2"
 631
 632 config 8260_PCI9_IDMA3
 633         bool "IDMA3"
 634
 635 config 8260_PCI9_IDMA4
 636         bool "IDMA4"
 637
 638 endchoice
 639
 640 source "drivers/pci/pcie/Kconfig"
 641
 642 source "drivers/pci/Kconfig"
 643
 644 source "drivers/pcmcia/Kconfig"
 645
 646 source "drivers/pci/hotplug/Kconfig"
 647
 648 config HAS_RAPIDIO
 649         bool
 650         default n
 651
 652 config RAPIDIO
 653         bool "RapidIO support"
 654         depends on HAS_RAPIDIO
 655         help
 656           If you say Y here, the kernel will include drivers and
 657           infrastructure code to support RapidIO interconnect devices.
 658
 659 source "drivers/rapidio/Kconfig"
 660
 661 endmenu
 662
 663 menu "Advanced setup"
 664         depends on PPC32
 665
 666 config ADVANCED_OPTIONS
 667         bool "Prompt for advanced kernel configuration options"
 668         help
 669           This option will enable prompting for a variety of advanced kernel
 670           configuration options.  These options can cause the kernel to not
 671           work if they are set incorrectly, but can be used to optimize certain
 672           aspects of kernel memory management.
 673
 674           Unless you know what you are doing, say N here.
 675
 676 comment "Default settings for advanced configuration options are used"
 677         depends on !ADVANCED_OPTIONS
 678
 679 config LOWMEM_SIZE_BOOL
 680         bool "Set maximum low memory"
 681         depends on ADVANCED_OPTIONS
 682         help
 683           This option allows you to set the maximum amount of memory which
 684           will be used as "low memory", that is, memory which the kernel can
 685           access directly, without having to set up a kernel virtual mapping.
 686           This can be useful in optimizing the layout of kernel virtual
 687           memory.
 688
 689           Say N here unless you know what you are doing.
 690
 691 config LOWMEM_SIZE
 692         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 693         default "0x30000000"
 694
 695 config RELOCATABLE
 696         bool "Build a relocatable kernel (EXPERIMENTAL)"
 697         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 698         help
 699           This builds a kernel image that is capable of running at the
 700           location the kernel is loaded at (some alignment restrictions may
 701           exist).
 702
 703           One use is for the kexec on panic case where the recovery kernel
 704           must live at a different physical address than the primary
 705           kernel.
 706
 707           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 708           it has been loaded at and the compile time physical addresses
 709           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 710           setting can still be useful to bootwrappers that need to know the
 711           load location of the kernel (eg. u-boot/mkimage).
 712
 713 config PAGE_OFFSET_BOOL
 714         bool "Set custom page offset address"
 715         depends on ADVANCED_OPTIONS
 716         help
 717           This option allows you to set the kernel virtual address at which
 718           the kernel will map low memory.  This can be useful in optimizing
 719           the virtual memory layout of the system.
 720
 721           Say N here unless you know what you are doing.
 722
 723 config PAGE_OFFSET
 724         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 725         default "0xc0000000"
 726
 727 config KERNEL_START_BOOL
 728         bool "Set custom kernel base address"
 729         depends on ADVANCED_OPTIONS
 730         help
 731           This option allows you to set the kernel virtual address at which
 732           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 733           however there are times (like kdump) that one might not want them
 734           to be the same.
 735
 736           Say N here unless you know what you are doing.
 737
 738 config KERNEL_START
 739         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 740         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 741         default "0xc2000000" if CRASH_DUMP
 742         default "0xc0000000"
 743
 744 config PHYSICAL_START_BOOL
 745         bool "Set physical address where the kernel is loaded"
 746         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 747         help
 748           This gives the physical address where the kernel is loaded.
 749
 750           Say N here unless you know what you are doing.
 751
 752 config PHYSICAL_START
 753         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 754         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
 755         default "0x00000000"
 756
 757 config PHYSICAL_ALIGN
 758         hex
 759         default "0x10000000" if FSL_BOOKE
 760         help
 761           This value puts the alignment restrictions on physical address
 762           where kernel is loaded and run from. Kernel is compiled for an
 763           address which meets above alignment restriction.
 764
 765 config TASK_SIZE_BOOL
 766         bool "Set custom user task size"
 767         depends on ADVANCED_OPTIONS
 768         help
 769           This option allows you to set the amount of virtual address space
 770           allocated to user tasks.  This can be useful in optimizing the
 771           virtual memory layout of the system.
 772
 773           Say N here unless you know what you are doing.
 774
 775 config TASK_SIZE
 776         hex "Size of user task space" if TASK_SIZE_BOOL
 777         default "0x80000000" if PPC_PREP || PPC_8xx
 778         default "0xc0000000"
 779
 780 config CONSISTENT_START_BOOL
 781         bool "Set custom consistent memory pool address"
 782         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 783         help
 784           This option allows you to set the base virtual address
 785           of the consistent memory pool.  This pool of virtual
 786           memory is used to make consistent memory allocations.
 787
 788 config CONSISTENT_START
 789         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 790         default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
 791         default "0xff100000" if NOT_COHERENT_CACHE
 792
 793 config CONSISTENT_SIZE_BOOL
 794         bool "Set custom consistent memory pool size"
 795         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 796         help
 797           This option allows you to set the size of the
 798           consistent memory pool.  This pool of virtual memory
 799           is used to make consistent memory allocations.
 800
 801 config CONSISTENT_SIZE
 802         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 803         default "0x00200000" if NOT_COHERENT_CACHE
 804
 805 config PIN_TLB
 806         bool "Pinned Kernel TLBs (860 ONLY)"
 807         depends on ADVANCED_OPTIONS && 8xx
 808 endmenu
 809
 810 if PPC64
 811 config RELOCATABLE
 812         bool "Build a relocatable kernel"
 813         help
 814           This builds a kernel image that is capable of running anywhere
 815           in the RMA (real memory area) at any 16k-aligned base address.
 816           The kernel is linked as a position-independent executable (PIE)
 817           and contains dynamic relocations which are processed early
 818           in the bootup process.
 819
 820           One use is for the kexec on panic case where the recovery kernel
 821           must live at a different physical address than the primary
 822           kernel.
 823
 824 config PAGE_OFFSET
 825         hex
 826         default "0xc000000000000000"
 827 config KERNEL_START
 828         hex
 829         default "0xc000000000000000"
 830 config PHYSICAL_START
 831         hex
 832         default "0x00000000"
 833 endif
 834
 835 source "net/Kconfig"
 836
 837 source "drivers/Kconfig"
 838
 839 source "fs/Kconfig"
 840
 841 # XXX source "arch/ppc/8xx_io/Kconfig"
 842
 843 # XXX source "arch/ppc/8260_io/Kconfig"
 844
 845 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 846
 847 source "lib/Kconfig"
 848
 849 source "arch/powerpc/Kconfig.debug"
 850
 851 source "security/Kconfig"
 852
 853 config KEYS_COMPAT
 854         bool
 855         depends on COMPAT && KEYS
 856         default y
 857
 858 source "crypto/Kconfig"
 859
 860 config PPC_CLOCK
 861         bool
 862         default n
 863         select HAVE_CLK
 864
 865 config PPC_LIB_RHEAP
 866         bool
 867
 868 source "arch/powerpc/kvm/Kconfig"