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_GET_USER_PAGES_FAST
  46         def_bool PPC64
  47
  48 config HAVE_SETUP_PER_CPU_AREA
  49         def_bool PPC64
  50
  51 config IRQ_PER_CPU
  52         bool
  53         default y
  54
  55 config STACKTRACE_SUPPORT
  56         bool
  57         default y
  58
  59 config HAVE_LATENCYTOP_SUPPORT
  60         def_bool y
  61
  62 config TRACE_IRQFLAGS_SUPPORT
  63         bool
  64         depends on PPC64
  65         default y
  66
  67 config LOCKDEP_SUPPORT
  68         bool
  69         default y
  70
  71 config RWSEM_GENERIC_SPINLOCK
  72         bool
  73
  74 config RWSEM_XCHGADD_ALGORITHM
  75         bool
  76         default y
  77
  78 config GENERIC_LOCKBREAK
  79         bool
  80         default y
  81         depends on SMP && PREEMPT
  82
  83 config ARCH_HAS_ILOG2_U32
  84         bool
  85         default y
  86
  87 config ARCH_HAS_ILOG2_U64
  88         bool
  89         default y if 64BIT
  90
  91 config GENERIC_HWEIGHT
  92         bool
  93         default y
  94
  95 config GENERIC_CALIBRATE_DELAY
  96         bool
  97         default y
  98
  99 config GENERIC_FIND_NEXT_BIT
 100         bool
 101         default y
 102
 103 config GENERIC_GPIO
 104         bool
 105         help
 106           Generic GPIO API support
 107
 108 config ARCH_NO_VIRT_TO_BUS
 109         def_bool PPC64
 110
 111 config PPC
 112         bool
 113         default y
 114         select HAVE_DYNAMIC_FTRACE
 115         select HAVE_FTRACE
 116         select ARCH_WANT_OPTIONAL_GPIOLIB
 117         select HAVE_IDE
 118         select HAVE_IOREMAP_PROT
 119         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 120         select HAVE_KPROBES
 121         select HAVE_ARCH_KGDB
 122         select HAVE_KRETPROBES
 123         select HAVE_ARCH_TRACEHOOK
 124         select HAVE_LMB
 125         select HAVE_DMA_ATTRS if PPC64
 126         select USE_GENERIC_SMP_HELPERS if SMP
 127         select HAVE_OPROFILE
 128
 129 config EARLY_PRINTK
 130         bool
 131         default y
 132
 133 config COMPAT
 134         bool
 135         default y if PPC64
 136         select COMPAT_BINFMT_ELF
 137
 138 config SYSVIPC_COMPAT
 139         bool
 140         depends on COMPAT && SYSVIPC
 141         default y
 142
 143 # All PPC32s use generic nvram driver through ppc_md
 144 config GENERIC_NVRAM
 145         bool
 146         default y if PPC32
 147
 148 config SCHED_NO_NO_OMIT_FRAME_POINTER
 149         bool
 150         default y
 151
 152 config ARCH_MAY_HAVE_PC_FDC
 153         bool
 154         default !PPC_PSERIES || PCI
 155
 156 config PPC_OF
 157         def_bool y
 158
 159 config OF
 160         def_bool y
 161
 162 config PPC_UDBG_16550
 163         bool
 164         default n
 165
 166 config GENERIC_TBSYNC
 167         bool
 168         default y if PPC32 && SMP
 169         default n
 170
 171 config AUDIT_ARCH
 172         bool
 173         default y
 174
 175 config GENERIC_BUG
 176         bool
 177         default y
 178         depends on BUG
 179
 180 config SYS_SUPPORTS_APM_EMULATION
 181         default y if PMAC_APM_EMU
 182         bool
 183
 184 config DEFAULT_UIMAGE
 185         bool
 186         help
 187           Used to allow a board to specify it wants a uImage built by default
 188         default n
 189
 190 config REDBOOT
 191         bool
 192
 193 config HIBERNATE_32
 194         bool
 195         depends on (PPC_PMAC && !SMP) || BROKEN
 196         default y
 197
 198 config HIBERNATE_64
 199         bool
 200         depends on BROKEN || (PPC_PMAC64 && EXPERIMENTAL)
 201         default y
 202
 203 config ARCH_HIBERNATION_POSSIBLE
 204         bool
 205         depends on (PPC64 && HIBERNATE_64) || (PPC32 && HIBERNATE_32)
 206         default y
 207
 208 config ARCH_SUSPEND_POSSIBLE
 209         def_bool y
 210         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx
 211
 212 config PPC_DCR_NATIVE
 213         bool
 214         default n
 215
 216 config PPC_DCR_MMIO
 217         bool
 218         default n
 219
 220 config PPC_DCR
 221         bool
 222         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 223         default y
 224
 225 config PPC_OF_PLATFORM_PCI
 226         bool
 227         depends on PCI
 228         depends on PPC64 # not supported on 32 bits yet
 229         default n
 230
 231 source "init/Kconfig"
 232
 233 source "arch/powerpc/sysdev/Kconfig"
 234 source "arch/powerpc/platforms/Kconfig"
 235
 236 menu "Kernel options"
 237
 238 config HIGHMEM
 239         bool "High memory support"
 240         depends on PPC32
 241
 242 source kernel/time/Kconfig
 243 source kernel/Kconfig.hz
 244 source kernel/Kconfig.preempt
 245 source "fs/Kconfig.binfmt"
 246
 247 config HUGETLB_PAGE_SIZE_VARIABLE
 248         bool
 249         depends on HUGETLB_PAGE
 250         default y
 251
 252 config MATH_EMULATION
 253         bool "Math emulation"
 254         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 255         ---help---
 256           Some PowerPC chips designed for embedded applications do not have
 257           a floating-point unit and therefore do not implement the
 258           floating-point instructions in the PowerPC instruction set.  If you
 259           say Y here, the kernel will include code to emulate a floating-point
 260           unit, which will allow programs that use floating-point
 261           instructions to run.
 262
 263 config 8XX_MINIMAL_FPEMU
 264         bool "Minimal math emulation for 8xx"
 265         depends on 8xx && !MATH_EMULATION
 266         help
 267           Older arch/ppc kernels still emulated a few floating point
 268           instructions such as load and store, even when full math
 269           emulation is disabled.  Say "Y" here if you want to preserve
 270           this behavior.
 271
 272           It is recommended that you build a soft-float userspace instead.
 273
 274 config IOMMU_VMERGE
 275         bool "Enable IOMMU virtual merging"
 276         depends on PPC64
 277         default y
 278         help
 279           Cause IO segments sent to a device for DMA to be merged virtually
 280           by the IOMMU when they happen to have been allocated contiguously.
 281           This doesn't add pressure to the IOMMU allocator. However, some
 282           drivers don't support getting large merged segments coming back
 283           from *_map_sg().
 284
 285           Most drivers don't have this problem; it is safe to say Y here.
 286
 287 config IOMMU_HELPER
 288         def_bool PPC64
 289
 290 config HOTPLUG_CPU
 291         bool "Support for enabling/disabling CPUs"
 292         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 293         ---help---
 294           Say Y here to be able to disable and re-enable individual
 295           CPUs at runtime on SMP machines.
 296
 297           Say N if you are unsure.
 298
 299 config ARCH_ENABLE_MEMORY_HOTPLUG
 300         def_bool y
 301
 302 config ARCH_HAS_WALK_MEMORY
 303         def_bool y
 304
 305 config ARCH_ENABLE_MEMORY_HOTREMOVE
 306         def_bool y
 307
 308 config KEXEC
 309         bool "kexec system call (EXPERIMENTAL)"
 310         depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
 311         help
 312           kexec is a system call that implements the ability to shutdown your
 313           current kernel, and to start another kernel.  It is like a reboot
 314           but it is independent of the system firmware.   And like a reboot
 315           you can start any kernel with it, not just Linux.
 316
 317           The name comes from the similarity to the exec system call.
 318
 319           It is an ongoing process to be certain the hardware in a machine
 320           is properly shutdown, so do not be surprised if this code does not
 321           initially work for you.  It may help to enable device hotplugging
 322           support.  As of this writing the exact hardware interface is
 323           strongly in flux, so no good recommendation can be made.
 324
 325 config CRASH_DUMP
 326         bool "Build a kdump crash kernel"
 327         depends on PPC_MULTIPLATFORM && PPC64
 328         help
 329           Build a kernel suitable for use as a kdump capture kernel.
 330           The kernel will be linked at a different address than normal, and
 331           so can only be used for Kdump.
 332
 333           Don't change this unless you know what you are doing.
 334
 335 config PHYP_DUMP
 336         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 337         depends on PPC_PSERIES && EXPERIMENTAL
 338         help
 339           Hypervisor-assisted dump is meant to be a kdump replacement
 340           offering robustness and speed not possible without system
 341           hypervisor assistence.
 342
 343           If unsure, say "N"
 344
 345 config PPCBUG_NVRAM
 346         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 347         default y if PPC_PREP
 348
 349 config IRQ_ALL_CPUS
 350         bool "Distribute interrupts on all CPUs by default"
 351         depends on SMP && !MV64360
 352         help
 353           This option gives the kernel permission to distribute IRQs across
 354           multiple CPUs.  Saying N here will route all IRQs to the first
 355           CPU.  Generally saying Y is safe, although some problems have been
 356           reported with SMP Power Macintoshes with this option enabled.
 357
 358 config NUMA
 359         bool "NUMA support"
 360         depends on PPC64
 361         default y if SMP && PPC_PSERIES
 362
 363 config NODES_SHIFT
 364         int
 365         default "4"
 366         depends on NEED_MULTIPLE_NODES
 367
 368 config ARCH_SELECT_MEMORY_MODEL
 369         def_bool y
 370         depends on PPC64
 371
 372 config ARCH_FLATMEM_ENABLE
 373         def_bool y
 374         depends on (PPC64 && !NUMA) || PPC32
 375
 376 config ARCH_SPARSEMEM_ENABLE
 377         def_bool y
 378         depends on PPC64
 379         select SPARSEMEM_VMEMMAP_ENABLE
 380
 381 config ARCH_SPARSEMEM_DEFAULT
 382         def_bool y
 383         depends on (SMP && PPC_PSERIES) || PPC_PS3
 384
 385 config ARCH_POPULATES_NODE_MAP
 386         def_bool y
 387
 388 source "mm/Kconfig"
 389
 390 config ARCH_MEMORY_PROBE
 391         def_bool y
 392         depends on MEMORY_HOTPLUG
 393
 394 # Some NUMA nodes have memory ranges that span
 395 # other nodes.  Even though a pfn is valid and
 396 # between a node's start and end pfns, it may not
 397 # reside on that node.  See memmap_init_zone()
 398 # for details.
 399 config NODES_SPAN_OTHER_NODES
 400         def_bool y
 401         depends on NEED_MULTIPLE_NODES
 402
 403 config PPC_HAS_HASH_64K
 404         bool
 405         depends on PPC64
 406         default n
 407
 408 config PPC_64K_PAGES
 409         bool "64k page size"
 410         depends on PPC64
 411         select PPC_HAS_HASH_64K
 412         help
 413           This option changes the kernel logical page size to 64k. On machines
 414           without processor support for 64k pages, the kernel will simulate
 415           them by loading each individual 4k page on demand transparently,
 416           while on hardware with such support, it will be used to map
 417           normal application pages.
 418
 419 config FORCE_MAX_ZONEORDER
 420         int "Maximum zone order"
 421         default "9" if PPC_64K_PAGES
 422         default "13" if PPC64 && !PPC_64K_PAGES
 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 PAGE_OFFSET
 813         hex
 814         default "0xc000000000000000"
 815 config KERNEL_START
 816         hex
 817         default "0xc000000002000000" if CRASH_DUMP
 818         default "0xc000000000000000"
 819 config PHYSICAL_START
 820         hex
 821         default "0x02000000" if CRASH_DUMP
 822         default "0x00000000"
 823 endif
 824
 825 source "net/Kconfig"
 826
 827 source "drivers/Kconfig"
 828
 829 source "fs/Kconfig"
 830
 831 # XXX source "arch/ppc/8xx_io/Kconfig"
 832
 833 # XXX source "arch/ppc/8260_io/Kconfig"
 834
 835 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 836
 837 source "lib/Kconfig"
 838
 839 source "arch/powerpc/Kconfig.debug"
 840
 841 source "security/Kconfig"
 842
 843 config KEYS_COMPAT
 844         bool
 845         depends on COMPAT && KEYS
 846         default y
 847
 848 source "crypto/Kconfig"
 849
 850 config PPC_CLOCK
 851         bool
 852         default n
 853         select HAVE_CLK
 854
 855 config PPC_LIB_RHEAP
 856         bool
 857
 858 source "arch/powerpc/kvm/Kconfig"