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_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 "kernel/Kconfig.freezer"
 231
 232 source "arch/powerpc/sysdev/Kconfig"
 233 source "arch/powerpc/platforms/Kconfig"
 234
 235 menu "Kernel options"
 236
 237 config HIGHMEM
 238         bool "High memory support"
 239         depends on PPC32
 240
 241 source kernel/time/Kconfig
 242 source kernel/Kconfig.hz
 243 source kernel/Kconfig.preempt
 244 source "fs/Kconfig.binfmt"
 245
 246 config HUGETLB_PAGE_SIZE_VARIABLE
 247         bool
 248         depends on HUGETLB_PAGE
 249         default y
 250
 251 config MATH_EMULATION
 252         bool "Math emulation"
 253         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 254         ---help---
 255           Some PowerPC chips designed for embedded applications do not have
 256           a floating-point unit and therefore do not implement the
 257           floating-point instructions in the PowerPC instruction set.  If you
 258           say Y here, the kernel will include code to emulate a floating-point
 259           unit, which will allow programs that use floating-point
 260           instructions to run.
 261
 262 config 8XX_MINIMAL_FPEMU
 263         bool "Minimal math emulation for 8xx"
 264         depends on 8xx && !MATH_EMULATION
 265         help
 266           Older arch/ppc kernels still emulated a few floating point
 267           instructions such as load and store, even when full math
 268           emulation is disabled.  Say "Y" here if you want to preserve
 269           this behavior.
 270
 271           It is recommended that you build a soft-float userspace instead.
 272
 273 config IOMMU_VMERGE
 274         bool "Enable IOMMU virtual merging"
 275         depends on PPC64
 276         default y
 277         help
 278           Cause IO segments sent to a device for DMA to be merged virtually
 279           by the IOMMU when they happen to have been allocated contiguously.
 280           This doesn't add pressure to the IOMMU allocator. However, some
 281           drivers don't support getting large merged segments coming back
 282           from *_map_sg().
 283
 284           Most drivers don't have this problem; it is safe to say Y here.
 285
 286 config IOMMU_HELPER
 287         def_bool PPC64
 288
 289 config HOTPLUG_CPU
 290         bool "Support for enabling/disabling CPUs"
 291         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 292         ---help---
 293           Say Y here to be able to disable and re-enable individual
 294           CPUs at runtime on SMP machines.
 295
 296           Say N if you are unsure.
 297
 298 config ARCH_ENABLE_MEMORY_HOTPLUG
 299         def_bool y
 300
 301 config ARCH_HAS_WALK_MEMORY
 302         def_bool y
 303
 304 config ARCH_ENABLE_MEMORY_HOTREMOVE
 305         def_bool y
 306
 307 config KEXEC
 308         bool "kexec system call (EXPERIMENTAL)"
 309         depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
 310         help
 311           kexec is a system call that implements the ability to shutdown your
 312           current kernel, and to start another kernel.  It is like a reboot
 313           but it is independent of the system firmware.   And like a reboot
 314           you can start any kernel with it, not just Linux.
 315
 316           The name comes from the similarity to the exec system call.
 317
 318           It is an ongoing process to be certain the hardware in a machine
 319           is properly shutdown, so do not be surprised if this code does not
 320           initially work for you.  It may help to enable device hotplugging
 321           support.  As of this writing the exact hardware interface is
 322           strongly in flux, so no good recommendation can be made.
 323
 324 config CRASH_DUMP
 325         bool "Build a kdump crash kernel"
 326         depends on PPC_MULTIPLATFORM && PPC64 && RELOCATABLE
 327         help
 328           Build a kernel suitable for use as a kdump capture kernel.
 329           The same kernel binary can be used as production kernel and dump
 330           capture kernel.
 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         range 9 64 if PPC_64K_PAGES
 419         default "9" if PPC_64K_PAGES
 420         range 13 64 if PPC64 && !PPC_64K_PAGES
 421         default "13" if PPC64 && !PPC_64K_PAGES
 422         range 11 64
 423         default "11"
 424         help
 425           The kernel memory allocator divides physically contiguous memory
 426           blocks into "zones", where each zone is a power of two number of
 427           pages.  This option selects the largest power of two that the kernel
 428           keeps in the memory allocator.  If you need to allocate very large
 429           blocks of physically contiguous memory, then you may need to
 430           increase this value.
 431
 432           This config option is actually maximum order plus one. For example,
 433           a value of 11 means that the largest free memory block is 2^10 pages.
 434
 435           The page size is not necessarily 4KB.  For example, on 64-bit
 436           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 437           this in mind when choosing a value for this option.
 438
 439 config PPC_SUBPAGE_PROT
 440         bool "Support setting protections for 4k subpages"
 441         depends on PPC_64K_PAGES
 442         help
 443           This option adds support for a system call to allow user programs
 444           to set access permissions (read/write, readonly, or no access)
 445           on the 4k subpages of each 64k page.
 446
 447 config SCHED_SMT
 448         bool "SMT (Hyperthreading) scheduler support"
 449         depends on PPC64 && SMP
 450         help
 451           SMT scheduler support improves the CPU scheduler's decision making
 452           when dealing with POWER5 cpus at a cost of slightly increased
 453           overhead in some places. If unsure say N here.
 454
 455 config PROC_DEVICETREE
 456         bool "Support for device tree in /proc"
 457         depends on PROC_FS
 458         help
 459           This option adds a device-tree directory under /proc which contains
 460           an image of the device tree that the kernel copies from Open
 461           Firmware or other boot firmware. If unsure, say Y here.
 462
 463 config CMDLINE_BOOL
 464         bool "Default bootloader kernel arguments"
 465
 466 config CMDLINE
 467         string "Initial kernel command string"
 468         depends on CMDLINE_BOOL
 469         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 470         help
 471           On some platforms, there is currently no way for the boot loader to
 472           pass arguments to the kernel. For these platforms, you can supply
 473           some command-line options at build time by entering them here.  In
 474           most cases you will need to specify the root device here.
 475
 476 config EXTRA_TARGETS
 477         string "Additional default image types"
 478         help
 479           List additional targets to be built by the bootwrapper here (separated
 480           by spaces).  This is useful for targets that depend of device tree
 481           files in the .dts directory.
 482
 483           Targets in this list will be build as part of the default build
 484           target, or when the user does a 'make zImage' or a
 485           'make zImage.initrd'.
 486
 487           If unsure, leave blank
 488
 489 if !44x || BROKEN
 490 config ARCH_WANTS_FREEZER_CONTROL
 491         def_bool y
 492         depends on ADB_PMU
 493
 494 source kernel/power/Kconfig
 495 endif
 496
 497 config SECCOMP
 498         bool "Enable seccomp to safely compute untrusted bytecode"
 499         depends on PROC_FS
 500         default y
 501         help
 502           This kernel feature is useful for number crunching applications
 503           that may need to compute untrusted bytecode during their
 504           execution. By using pipes or other transports made available to
 505           the process as file descriptors supporting the read/write
 506           syscalls, it's possible to isolate those applications in
 507           their own address space using seccomp. Once seccomp is
 508           enabled via /proc/<pid>/seccomp, it cannot be disabled
 509           and the task is only allowed to execute a few safe syscalls
 510           defined by each seccomp mode.
 511
 512           If unsure, say Y. Only embedded should say N here.
 513
 514 endmenu
 515
 516 config ISA_DMA_API
 517         bool
 518         default !PPC_ISERIES || PCI
 519
 520 menu "Bus options"
 521
 522 config ISA
 523         bool "Support for ISA-bus hardware"
 524         depends on PPC_PREP || PPC_CHRP
 525         select PPC_I8259
 526         help
 527           Find out whether you have ISA slots on your motherboard.  ISA is the
 528           name of a bus system, i.e. the way the CPU talks to the other stuff
 529           inside your box.  If you have an Apple machine, say N here; if you
 530           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 531           you have an embedded board, consult your board documentation.
 532
 533 config ZONE_DMA
 534         bool
 535         default y
 536
 537 config GENERIC_ISA_DMA
 538         bool
 539         depends on PPC64 || POWER4 || 6xx && !CPM2
 540         default y
 541
 542 config PPC_INDIRECT_PCI
 543         bool
 544         depends on PCI
 545         default y if 40x || 44x
 546         default n
 547
 548 config EISA
 549         bool
 550
 551 config SBUS
 552         bool
 553
 554 config FSL_SOC
 555         bool
 556
 557 config FSL_PCI
 558         bool
 559         select PPC_INDIRECT_PCI
 560
 561 config 4xx_SOC
 562         bool
 563
 564 config FSL_LBC
 565         bool
 566         help
 567           Freescale Localbus support
 568
 569 config FSL_GTM
 570         bool
 571         depends on PPC_83xx || QUICC_ENGINE || CPM2
 572         help
 573           Freescale General-purpose Timers support
 574
 575 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 576 config MCA
 577         bool
 578
 579 # Platforms that what PCI turned unconditionally just do select PCI
 580 # in their config node.  Platforms that want to choose at config
 581 # time should select PPC_PCI_CHOICE
 582 config PPC_PCI_CHOICE
 583         bool
 584
 585 config PCI
 586         bool "PCI support" if PPC_PCI_CHOICE
 587         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 588                 && !PPC_85xx && !PPC_86xx
 589         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 590         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 591         select ARCH_SUPPORTS_MSI
 592         help
 593           Find out whether your system includes a PCI bus. PCI is the name of
 594           a bus system, i.e. the way the CPU talks to the other stuff inside
 595           your box.  If you say Y here, the kernel will include drivers and
 596           infrastructure code to support PCI bus devices.
 597
 598 config PCI_DOMAINS
 599         def_bool PCI
 600
 601 config PCI_SYSCALL
 602         def_bool PCI
 603
 604 config PCI_QSPAN
 605         bool "QSpan PCI"
 606         depends on !4xx && !CPM2 && 8xx
 607         select PPC_I8259
 608         help
 609           Say Y here if you have a system based on a Motorola 8xx-series
 610           embedded processor with a QSPAN PCI interface, otherwise say N.
 611
 612 config PCI_8260
 613         bool
 614         depends on PCI && 8260
 615         select PPC_INDIRECT_PCI
 616         default y
 617
 618 config 8260_PCI9
 619         bool "Enable workaround for MPC826x erratum PCI 9"
 620         depends on PCI_8260 && !8272
 621         default y
 622
 623 choice
 624         prompt "IDMA channel for PCI 9 workaround"
 625         depends on 8260_PCI9
 626
 627 config 8260_PCI9_IDMA1
 628         bool "IDMA1"
 629
 630 config 8260_PCI9_IDMA2
 631         bool "IDMA2"
 632
 633 config 8260_PCI9_IDMA3
 634         bool "IDMA3"
 635
 636 config 8260_PCI9_IDMA4
 637         bool "IDMA4"
 638
 639 endchoice
 640
 641 source "drivers/pci/pcie/Kconfig"
 642
 643 source "drivers/pci/Kconfig"
 644
 645 source "drivers/pcmcia/Kconfig"
 646
 647 source "drivers/pci/hotplug/Kconfig"
 648
 649 config HAS_RAPIDIO
 650         bool
 651         default n
 652
 653 config RAPIDIO
 654         bool "RapidIO support"
 655         depends on HAS_RAPIDIO
 656         help
 657           If you say Y here, the kernel will include drivers and
 658           infrastructure code to support RapidIO interconnect devices.
 659
 660 source "drivers/rapidio/Kconfig"
 661
 662 endmenu
 663
 664 menu "Advanced setup"
 665         depends on PPC32
 666
 667 config ADVANCED_OPTIONS
 668         bool "Prompt for advanced kernel configuration options"
 669         help
 670           This option will enable prompting for a variety of advanced kernel
 671           configuration options.  These options can cause the kernel to not
 672           work if they are set incorrectly, but can be used to optimize certain
 673           aspects of kernel memory management.
 674
 675           Unless you know what you are doing, say N here.
 676
 677 comment "Default settings for advanced configuration options are used"
 678         depends on !ADVANCED_OPTIONS
 679
 680 config LOWMEM_SIZE_BOOL
 681         bool "Set maximum low memory"
 682         depends on ADVANCED_OPTIONS
 683         help
 684           This option allows you to set the maximum amount of memory which
 685           will be used as "low memory", that is, memory which the kernel can
 686           access directly, without having to set up a kernel virtual mapping.
 687           This can be useful in optimizing the layout of kernel virtual
 688           memory.
 689
 690           Say N here unless you know what you are doing.
 691
 692 config LOWMEM_SIZE
 693         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 694         default "0x30000000"
 695
 696 config RELOCATABLE
 697         bool "Build a relocatable kernel (EXPERIMENTAL)"
 698         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 699         help
 700           This builds a kernel image that is capable of running at the
 701           location the kernel is loaded at (some alignment restrictions may
 702           exist).
 703
 704           One use is for the kexec on panic case where the recovery kernel
 705           must live at a different physical address than the primary
 706           kernel.
 707
 708           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 709           it has been loaded at and the compile time physical addresses
 710           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 711           setting can still be useful to bootwrappers that need to know the
 712           load location of the kernel (eg. u-boot/mkimage).
 713
 714 config PAGE_OFFSET_BOOL
 715         bool "Set custom page offset address"
 716         depends on ADVANCED_OPTIONS
 717         help
 718           This option allows you to set the kernel virtual address at which
 719           the kernel will map low memory.  This can be useful in optimizing
 720           the virtual memory layout of the system.
 721
 722           Say N here unless you know what you are doing.
 723
 724 config PAGE_OFFSET
 725         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 726         default "0xc0000000"
 727
 728 config KERNEL_START_BOOL
 729         bool "Set custom kernel base address"
 730         depends on ADVANCED_OPTIONS
 731         help
 732           This option allows you to set the kernel virtual address at which
 733           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 734           however there are times (like kdump) that one might not want them
 735           to be the same.
 736
 737           Say N here unless you know what you are doing.
 738
 739 config KERNEL_START
 740         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 741         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 742         default "0xc2000000" if CRASH_DUMP
 743         default "0xc0000000"
 744
 745 config PHYSICAL_START_BOOL
 746         bool "Set physical address where the kernel is loaded"
 747         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 748         help
 749           This gives the physical address where the kernel is loaded.
 750
 751           Say N here unless you know what you are doing.
 752
 753 config PHYSICAL_START
 754         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 755         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
 756         default "0x00000000"
 757
 758 config PHYSICAL_ALIGN
 759         hex
 760         default "0x10000000" if FSL_BOOKE
 761         help
 762           This value puts the alignment restrictions on physical address
 763           where kernel is loaded and run from. Kernel is compiled for an
 764           address which meets above alignment restriction.
 765
 766 config TASK_SIZE_BOOL
 767         bool "Set custom user task size"
 768         depends on ADVANCED_OPTIONS
 769         help
 770           This option allows you to set the amount of virtual address space
 771           allocated to user tasks.  This can be useful in optimizing the
 772           virtual memory layout of the system.
 773
 774           Say N here unless you know what you are doing.
 775
 776 config TASK_SIZE
 777         hex "Size of user task space" if TASK_SIZE_BOOL
 778         default "0x80000000" if PPC_PREP || PPC_8xx
 779         default "0xc0000000"
 780
 781 config CONSISTENT_START_BOOL
 782         bool "Set custom consistent memory pool address"
 783         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 784         help
 785           This option allows you to set the base virtual address
 786           of the consistent memory pool.  This pool of virtual
 787           memory is used to make consistent memory allocations.
 788
 789 config CONSISTENT_START
 790         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 791         default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
 792         default "0xff100000" if NOT_COHERENT_CACHE
 793
 794 config CONSISTENT_SIZE_BOOL
 795         bool "Set custom consistent memory pool size"
 796         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 797         help
 798           This option allows you to set the size of the
 799           consistent memory pool.  This pool of virtual memory
 800           is used to make consistent memory allocations.
 801
 802 config CONSISTENT_SIZE
 803         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 804         default "0x00200000" if NOT_COHERENT_CACHE
 805
 806 config PIN_TLB
 807         bool "Pinned Kernel TLBs (860 ONLY)"
 808         depends on ADVANCED_OPTIONS && 8xx
 809 endmenu
 810
 811 if PPC64
 812 config RELOCATABLE
 813         bool "Build a relocatable kernel"
 814         help
 815           This builds a kernel image that is capable of running anywhere
 816           in the RMA (real memory area) at any 16k-aligned base address.
 817           The kernel is linked as a position-independent executable (PIE)
 818           and contains dynamic relocations which are processed early
 819           in the bootup process.
 820
 821           One use is for the kexec on panic case where the recovery kernel
 822           must live at a different physical address than the primary
 823           kernel.
 824
 825 config PAGE_OFFSET
 826         hex
 827         default "0xc000000000000000"
 828 config KERNEL_START
 829         hex
 830         default "0xc000000000000000"
 831 config PHYSICAL_START
 832         hex
 833         default "0x00000000"
 834 endif
 835
 836 source "net/Kconfig"
 837
 838 source "drivers/Kconfig"
 839
 840 source "fs/Kconfig"
 841
 842 # XXX source "arch/ppc/8xx_io/Kconfig"
 843
 844 # XXX source "arch/ppc/8260_io/Kconfig"
 845
 846 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 847
 848 source "lib/Kconfig"
 849
 850 source "arch/powerpc/Kconfig.debug"
 851
 852 source "security/Kconfig"
 853
 854 config KEYS_COMPAT
 855         bool
 856         depends on COMPAT && KEYS
 857         default y
 858
 859 source "crypto/Kconfig"
 860
 861 config PPC_CLOCK
 862         bool
 863         default n
 864         select HAVE_CLK
 865
 866 config PPC_LIB_RHEAP
 867         bool
 868
 869 source "arch/powerpc/kvm/Kconfig"