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 ARCH_PHYS_ADDR_T_64BIT
  26        def_bool PPC64 || PHYS_64BIT
  27
  28 config MMU
  29         bool
  30         default y
  31
  32 config GENERIC_CMOS_UPDATE
  33         def_bool y
  34
  35 config GENERIC_TIME
  36         def_bool y
  37
  38 config GENERIC_TIME_VSYSCALL
  39         def_bool y
  40
  41 config GENERIC_CLOCKEVENTS
  42         def_bool y
  43
  44 config GENERIC_HARDIRQS
  45         bool
  46         default y
  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 "kernel/Kconfig.freezer"
 234
 235 source "arch/powerpc/sysdev/Kconfig"
 236 source "arch/powerpc/platforms/Kconfig"
 237
 238 menu "Kernel options"
 239
 240 config HIGHMEM
 241         bool "High memory support"
 242         depends on PPC32
 243
 244 source kernel/time/Kconfig
 245 source kernel/Kconfig.hz
 246 source kernel/Kconfig.preempt
 247 source "fs/Kconfig.binfmt"
 248
 249 config HUGETLB_PAGE_SIZE_VARIABLE
 250         bool
 251         depends on HUGETLB_PAGE
 252         default y
 253
 254 config MATH_EMULATION
 255         bool "Math emulation"
 256         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 257         ---help---
 258           Some PowerPC chips designed for embedded applications do not have
 259           a floating-point unit and therefore do not implement the
 260           floating-point instructions in the PowerPC instruction set.  If you
 261           say Y here, the kernel will include code to emulate a floating-point
 262           unit, which will allow programs that use floating-point
 263           instructions to run.
 264
 265 config 8XX_MINIMAL_FPEMU
 266         bool "Minimal math emulation for 8xx"
 267         depends on 8xx && !MATH_EMULATION
 268         help
 269           Older arch/ppc kernels still emulated a few floating point
 270           instructions such as load and store, even when full math
 271           emulation is disabled.  Say "Y" here if you want to preserve
 272           this behavior.
 273
 274           It is recommended that you build a soft-float userspace instead.
 275
 276 config IOMMU_VMERGE
 277         bool "Enable IOMMU virtual merging"
 278         depends on PPC64
 279         default y
 280         help
 281           Cause IO segments sent to a device for DMA to be merged virtually
 282           by the IOMMU when they happen to have been allocated contiguously.
 283           This doesn't add pressure to the IOMMU allocator. However, some
 284           drivers don't support getting large merged segments coming back
 285           from *_map_sg().
 286
 287           Most drivers don't have this problem; it is safe to say Y here.
 288
 289 config IOMMU_HELPER
 290         def_bool PPC64
 291
 292 config HOTPLUG_CPU
 293         bool "Support for enabling/disabling CPUs"
 294         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 295         ---help---
 296           Say Y here to be able to disable and re-enable individual
 297           CPUs at runtime on SMP machines.
 298
 299           Say N if you are unsure.
 300
 301 config ARCH_ENABLE_MEMORY_HOTPLUG
 302         def_bool y
 303
 304 config ARCH_HAS_WALK_MEMORY
 305         def_bool y
 306
 307 config ARCH_ENABLE_MEMORY_HOTREMOVE
 308         def_bool y
 309
 310 config KEXEC
 311         bool "kexec system call (EXPERIMENTAL)"
 312         depends on (PPC_PRPMC2800 || PPC_MULTIPLATFORM) && EXPERIMENTAL
 313         help
 314           kexec is a system call that implements the ability to shutdown your
 315           current kernel, and to start another kernel.  It is like a reboot
 316           but it is independent of the system firmware.   And like a reboot
 317           you can start any kernel with it, not just Linux.
 318
 319           The name comes from the similarity to the exec system call.
 320
 321           It is an ongoing process to be certain the hardware in a machine
 322           is properly shutdown, so do not be surprised if this code does not
 323           initially work for you.  It may help to enable device hotplugging
 324           support.  As of this writing the exact hardware interface is
 325           strongly in flux, so no good recommendation can be made.
 326
 327 config CRASH_DUMP
 328         bool "Build a kdump crash kernel"
 329         depends on PPC_MULTIPLATFORM && PPC64
 330         help
 331           Build a kernel suitable for use as a kdump capture kernel.
 332           The kernel will be linked at a different address than normal, and
 333           so can only be used for Kdump.
 334
 335           Don't change this unless you know what you are doing.
 336
 337 config PHYP_DUMP
 338         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 339         depends on PPC_PSERIES && EXPERIMENTAL
 340         help
 341           Hypervisor-assisted dump is meant to be a kdump replacement
 342           offering robustness and speed not possible without system
 343           hypervisor assistence.
 344
 345           If unsure, say "N"
 346
 347 config PPCBUG_NVRAM
 348         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 349         default y if PPC_PREP
 350
 351 config IRQ_ALL_CPUS
 352         bool "Distribute interrupts on all CPUs by default"
 353         depends on SMP && !MV64360
 354         help
 355           This option gives the kernel permission to distribute IRQs across
 356           multiple CPUs.  Saying N here will route all IRQs to the first
 357           CPU.  Generally saying Y is safe, although some problems have been
 358           reported with SMP Power Macintoshes with this option enabled.
 359
 360 config NUMA
 361         bool "NUMA support"
 362         depends on PPC64
 363         default y if SMP && PPC_PSERIES
 364
 365 config NODES_SHIFT
 366         int
 367         default "4"
 368         depends on NEED_MULTIPLE_NODES
 369
 370 config ARCH_SELECT_MEMORY_MODEL
 371         def_bool y
 372         depends on PPC64
 373
 374 config ARCH_FLATMEM_ENABLE
 375         def_bool y
 376         depends on (PPC64 && !NUMA) || PPC32
 377
 378 config ARCH_SPARSEMEM_ENABLE
 379         def_bool y
 380         depends on PPC64
 381         select SPARSEMEM_VMEMMAP_ENABLE
 382
 383 config ARCH_SPARSEMEM_DEFAULT
 384         def_bool y
 385         depends on (SMP && PPC_PSERIES) || PPC_PS3
 386
 387 config ARCH_POPULATES_NODE_MAP
 388         def_bool y
 389
 390 source "mm/Kconfig"
 391
 392 config ARCH_MEMORY_PROBE
 393         def_bool y
 394         depends on MEMORY_HOTPLUG
 395
 396 # Some NUMA nodes have memory ranges that span
 397 # other nodes.  Even though a pfn is valid and
 398 # between a node's start and end pfns, it may not
 399 # reside on that node.  See memmap_init_zone()
 400 # for details.
 401 config NODES_SPAN_OTHER_NODES
 402         def_bool y
 403         depends on NEED_MULTIPLE_NODES
 404
 405 config PPC_HAS_HASH_64K
 406         bool
 407         depends on PPC64
 408         default n
 409
 410 config PPC_64K_PAGES
 411         bool "64k page size"
 412         depends on PPC64
 413         select PPC_HAS_HASH_64K
 414         help
 415           This option changes the kernel logical page size to 64k. On machines
 416           without processor support for 64k pages, the kernel will simulate
 417           them by loading each individual 4k page on demand transparently,
 418           while on hardware with such support, it will be used to map
 419           normal application pages.
 420
 421 config FORCE_MAX_ZONEORDER
 422         int "Maximum zone order"
 423         range 9 64 if PPC_64K_PAGES
 424         default "9" if PPC_64K_PAGES
 425         range 13 64 if PPC64 && !PPC_64K_PAGES
 426         default "13" if PPC64 && !PPC_64K_PAGES
 427         range 11 64
 428         default "11"
 429         help
 430           The kernel memory allocator divides physically contiguous memory
 431           blocks into "zones", where each zone is a power of two number of
 432           pages.  This option selects the largest power of two that the kernel
 433           keeps in the memory allocator.  If you need to allocate very large
 434           blocks of physically contiguous memory, then you may need to
 435           increase this value.
 436
 437           This config option is actually maximum order plus one. For example,
 438           a value of 11 means that the largest free memory block is 2^10 pages.
 439
 440           The page size is not necessarily 4KB.  For example, on 64-bit
 441           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 442           this in mind when choosing a value for this option.
 443
 444 config PPC_SUBPAGE_PROT
 445         bool "Support setting protections for 4k subpages"
 446         depends on PPC_64K_PAGES
 447         help
 448           This option adds support for a system call to allow user programs
 449           to set access permissions (read/write, readonly, or no access)
 450           on the 4k subpages of each 64k page.
 451
 452 config SCHED_SMT
 453         bool "SMT (Hyperthreading) scheduler support"
 454         depends on PPC64 && SMP
 455         help
 456           SMT scheduler support improves the CPU scheduler's decision making
 457           when dealing with POWER5 cpus at a cost of slightly increased
 458           overhead in some places. If unsure say N here.
 459
 460 config PROC_DEVICETREE
 461         bool "Support for device tree in /proc"
 462         depends on PROC_FS
 463         help
 464           This option adds a device-tree directory under /proc which contains
 465           an image of the device tree that the kernel copies from Open
 466           Firmware or other boot firmware. If unsure, say Y here.
 467
 468 config CMDLINE_BOOL
 469         bool "Default bootloader kernel arguments"
 470
 471 config CMDLINE
 472         string "Initial kernel command string"
 473         depends on CMDLINE_BOOL
 474         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 475         help
 476           On some platforms, there is currently no way for the boot loader to
 477           pass arguments to the kernel. For these platforms, you can supply
 478           some command-line options at build time by entering them here.  In
 479           most cases you will need to specify the root device here.
 480
 481 config EXTRA_TARGETS
 482         string "Additional default image types"
 483         help
 484           List additional targets to be built by the bootwrapper here (separated
 485           by spaces).  This is useful for targets that depend of device tree
 486           files in the .dts directory.
 487
 488           Targets in this list will be build as part of the default build
 489           target, or when the user does a 'make zImage' or a
 490           'make zImage.initrd'.
 491
 492           If unsure, leave blank
 493
 494 if !44x || BROKEN
 495 config ARCH_WANTS_FREEZER_CONTROL
 496         def_bool y
 497         depends on ADB_PMU
 498
 499 source kernel/power/Kconfig
 500 endif
 501
 502 config SECCOMP
 503         bool "Enable seccomp to safely compute untrusted bytecode"
 504         depends on PROC_FS
 505         default y
 506         help
 507           This kernel feature is useful for number crunching applications
 508           that may need to compute untrusted bytecode during their
 509           execution. By using pipes or other transports made available to
 510           the process as file descriptors supporting the read/write
 511           syscalls, it's possible to isolate those applications in
 512           their own address space using seccomp. Once seccomp is
 513           enabled via /proc/<pid>/seccomp, it cannot be disabled
 514           and the task is only allowed to execute a few safe syscalls
 515           defined by each seccomp mode.
 516
 517           If unsure, say Y. Only embedded should say N here.
 518
 519 endmenu
 520
 521 config ISA_DMA_API
 522         bool
 523         default !PPC_ISERIES || PCI
 524
 525 menu "Bus options"
 526
 527 config ISA
 528         bool "Support for ISA-bus hardware"
 529         depends on PPC_PREP || PPC_CHRP
 530         select PPC_I8259
 531         help
 532           Find out whether you have ISA slots on your motherboard.  ISA is the
 533           name of a bus system, i.e. the way the CPU talks to the other stuff
 534           inside your box.  If you have an Apple machine, say N here; if you
 535           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 536           you have an embedded board, consult your board documentation.
 537
 538 config ZONE_DMA
 539         bool
 540         default y
 541
 542 config GENERIC_ISA_DMA
 543         bool
 544         depends on PPC64 || POWER4 || 6xx && !CPM2
 545         default y
 546
 547 config PPC_INDIRECT_PCI
 548         bool
 549         depends on PCI
 550         default y if 40x || 44x
 551         default n
 552
 553 config EISA
 554         bool
 555
 556 config SBUS
 557         bool
 558
 559 config FSL_SOC
 560         bool
 561
 562 config FSL_PCI
 563         bool
 564         select PPC_INDIRECT_PCI
 565
 566 config 4xx_SOC
 567         bool
 568
 569 config FSL_LBC
 570         bool
 571         help
 572           Freescale Localbus support
 573
 574 config FSL_GTM
 575         bool
 576         depends on PPC_83xx || QUICC_ENGINE || CPM2
 577         help
 578           Freescale General-purpose Timers support
 579
 580 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 581 config MCA
 582         bool
 583
 584 # Platforms that what PCI turned unconditionally just do select PCI
 585 # in their config node.  Platforms that want to choose at config
 586 # time should select PPC_PCI_CHOICE
 587 config PPC_PCI_CHOICE
 588         bool
 589
 590 config PCI
 591         bool "PCI support" if PPC_PCI_CHOICE
 592         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 593                 && !PPC_85xx && !PPC_86xx
 594         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 595         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 596         select ARCH_SUPPORTS_MSI
 597         help
 598           Find out whether your system includes a PCI bus. PCI is the name of
 599           a bus system, i.e. the way the CPU talks to the other stuff inside
 600           your box.  If you say Y here, the kernel will include drivers and
 601           infrastructure code to support PCI bus devices.
 602
 603 config PCI_DOMAINS
 604         def_bool PCI
 605
 606 config PCI_SYSCALL
 607         def_bool PCI
 608
 609 config PCI_QSPAN
 610         bool "QSpan PCI"
 611         depends on !4xx && !CPM2 && 8xx
 612         select PPC_I8259
 613         help
 614           Say Y here if you have a system based on a Motorola 8xx-series
 615           embedded processor with a QSPAN PCI interface, otherwise say N.
 616
 617 config PCI_8260
 618         bool
 619         depends on PCI && 8260
 620         select PPC_INDIRECT_PCI
 621         default y
 622
 623 config 8260_PCI9
 624         bool "Enable workaround for MPC826x erratum PCI 9"
 625         depends on PCI_8260 && !8272
 626         default y
 627
 628 choice
 629         prompt "IDMA channel for PCI 9 workaround"
 630         depends on 8260_PCI9
 631
 632 config 8260_PCI9_IDMA1
 633         bool "IDMA1"
 634
 635 config 8260_PCI9_IDMA2
 636         bool "IDMA2"
 637
 638 config 8260_PCI9_IDMA3
 639         bool "IDMA3"
 640
 641 config 8260_PCI9_IDMA4
 642         bool "IDMA4"
 643
 644 endchoice
 645
 646 source "drivers/pci/pcie/Kconfig"
 647
 648 source "drivers/pci/Kconfig"
 649
 650 source "drivers/pcmcia/Kconfig"
 651
 652 source "drivers/pci/hotplug/Kconfig"
 653
 654 config HAS_RAPIDIO
 655         bool
 656         default n
 657
 658 config RAPIDIO
 659         bool "RapidIO support"
 660         depends on HAS_RAPIDIO
 661         help
 662           If you say Y here, the kernel will include drivers and
 663           infrastructure code to support RapidIO interconnect devices.
 664
 665 source "drivers/rapidio/Kconfig"
 666
 667 endmenu
 668
 669 menu "Advanced setup"
 670         depends on PPC32
 671
 672 config ADVANCED_OPTIONS
 673         bool "Prompt for advanced kernel configuration options"
 674         help
 675           This option will enable prompting for a variety of advanced kernel
 676           configuration options.  These options can cause the kernel to not
 677           work if they are set incorrectly, but can be used to optimize certain
 678           aspects of kernel memory management.
 679
 680           Unless you know what you are doing, say N here.
 681
 682 comment "Default settings for advanced configuration options are used"
 683         depends on !ADVANCED_OPTIONS
 684
 685 config LOWMEM_SIZE_BOOL
 686         bool "Set maximum low memory"
 687         depends on ADVANCED_OPTIONS
 688         help
 689           This option allows you to set the maximum amount of memory which
 690           will be used as "low memory", that is, memory which the kernel can
 691           access directly, without having to set up a kernel virtual mapping.
 692           This can be useful in optimizing the layout of kernel virtual
 693           memory.
 694
 695           Say N here unless you know what you are doing.
 696
 697 config LOWMEM_SIZE
 698         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 699         default "0x30000000"
 700
 701 config RELOCATABLE
 702         bool "Build a relocatable kernel (EXPERIMENTAL)"
 703         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 704         help
 705           This builds a kernel image that is capable of running at the
 706           location the kernel is loaded at (some alignment restrictions may
 707           exist).
 708
 709           One use is for the kexec on panic case where the recovery kernel
 710           must live at a different physical address than the primary
 711           kernel.
 712
 713           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 714           it has been loaded at and the compile time physical addresses
 715           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 716           setting can still be useful to bootwrappers that need to know the
 717           load location of the kernel (eg. u-boot/mkimage).
 718
 719 config PAGE_OFFSET_BOOL
 720         bool "Set custom page offset address"
 721         depends on ADVANCED_OPTIONS
 722         help
 723           This option allows you to set the kernel virtual address at which
 724           the kernel will map low memory.  This can be useful in optimizing
 725           the virtual memory layout of the system.
 726
 727           Say N here unless you know what you are doing.
 728
 729 config PAGE_OFFSET
 730         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 731         default "0xc0000000"
 732
 733 config KERNEL_START_BOOL
 734         bool "Set custom kernel base address"
 735         depends on ADVANCED_OPTIONS
 736         help
 737           This option allows you to set the kernel virtual address at which
 738           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 739           however there are times (like kdump) that one might not want them
 740           to be the same.
 741
 742           Say N here unless you know what you are doing.
 743
 744 config KERNEL_START
 745         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 746         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 747         default "0xc2000000" if CRASH_DUMP
 748         default "0xc0000000"
 749
 750 config PHYSICAL_START_BOOL
 751         bool "Set physical address where the kernel is loaded"
 752         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 753         help
 754           This gives the physical address where the kernel is loaded.
 755
 756           Say N here unless you know what you are doing.
 757
 758 config PHYSICAL_START
 759         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 760         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
 761         default "0x00000000"
 762
 763 config PHYSICAL_ALIGN
 764         hex
 765         default "0x10000000" if FSL_BOOKE
 766         help
 767           This value puts the alignment restrictions on physical address
 768           where kernel is loaded and run from. Kernel is compiled for an
 769           address which meets above alignment restriction.
 770
 771 config TASK_SIZE_BOOL
 772         bool "Set custom user task size"
 773         depends on ADVANCED_OPTIONS
 774         help
 775           This option allows you to set the amount of virtual address space
 776           allocated to user tasks.  This can be useful in optimizing the
 777           virtual memory layout of the system.
 778
 779           Say N here unless you know what you are doing.
 780
 781 config TASK_SIZE
 782         hex "Size of user task space" if TASK_SIZE_BOOL
 783         default "0x80000000" if PPC_PREP || PPC_8xx
 784         default "0xc0000000"
 785
 786 config CONSISTENT_START_BOOL
 787         bool "Set custom consistent memory pool address"
 788         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 789         help
 790           This option allows you to set the base virtual address
 791           of the consistent memory pool.  This pool of virtual
 792           memory is used to make consistent memory allocations.
 793
 794 config CONSISTENT_START
 795         hex "Base virtual address of consistent memory pool" if CONSISTENT_START_BOOL
 796         default "0xfd000000" if (NOT_COHERENT_CACHE && 8xx)
 797         default "0xff100000" if NOT_COHERENT_CACHE
 798
 799 config CONSISTENT_SIZE_BOOL
 800         bool "Set custom consistent memory pool size"
 801         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 802         help
 803           This option allows you to set the size of the
 804           consistent memory pool.  This pool of virtual memory
 805           is used to make consistent memory allocations.
 806
 807 config CONSISTENT_SIZE
 808         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 809         default "0x00200000" if NOT_COHERENT_CACHE
 810
 811 config PIN_TLB
 812         bool "Pinned Kernel TLBs (860 ONLY)"
 813         depends on ADVANCED_OPTIONS && 8xx
 814 endmenu
 815
 816 if PPC64
 817 config RELOCATABLE
 818         bool "Build a relocatable kernel"
 819         help
 820           This builds a kernel image that is capable of running anywhere
 821           in the RMA (real memory area) at any 16k-aligned base address.
 822           The kernel is linked as a position-independent executable (PIE)
 823           and contains dynamic relocations which are processed early
 824           in the bootup process.
 825
 826           One use is for the kexec on panic case where the recovery kernel
 827           must live at a different physical address than the primary
 828           kernel.
 829
 830 config PAGE_OFFSET
 831         hex
 832         default "0xc000000000000000"
 833 config KERNEL_START
 834         hex
 835         default "0xc000000002000000" if CRASH_DUMP
 836         default "0xc000000000000000"
 837 config PHYSICAL_START
 838         hex
 839         default "0x02000000" if CRASH_DUMP
 840         default "0x00000000"
 841 endif
 842
 843 source "net/Kconfig"
 844
 845 source "drivers/Kconfig"
 846
 847 source "fs/Kconfig"
 848
 849 # XXX source "arch/ppc/8xx_io/Kconfig"
 850
 851 # XXX source "arch/ppc/8260_io/Kconfig"
 852
 853 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 854
 855 source "lib/Kconfig"
 856
 857 source "arch/powerpc/Kconfig.debug"
 858
 859 source "security/Kconfig"
 860
 861 config KEYS_COMPAT
 862         bool
 863         depends on COMPAT && KEYS
 864         default y
 865
 866 source "crypto/Kconfig"
 867
 868 config PPC_CLOCK
 869         bool
 870         default n
 871         select HAVE_CLK
 872
 873 config PPC_LIB_RHEAP
 874         bool
 875
 876 source "arch/powerpc/kvm/Kconfig"