arch/powerpc/Kconfig

   1 source "arch/powerpc/platforms/Kconfig.cputype"
   2
   3 config PPC32
   4         bool
   5         default y if !PPC64
   6
   7 config 32BIT
   8         bool
   9         default y if PPC32
  10
  11 config 64BIT
  12         bool
  13         default y if PPC64
  14
  15 config WORD_SIZE
  16         int
  17         default 64 if PPC64
  18         default 32 if !PPC64
  19
  20 config ARCH_PHYS_ADDR_T_64BIT
  21        def_bool PPC64 || PHYS_64BIT
  22
  23 config ARCH_DMA_ADDR_T_64BIT
  24         def_bool ARCH_PHYS_ADDR_T_64BIT
  25
  26 config MMU
  27         bool
  28         default y
  29
  30 config GENERIC_CMOS_UPDATE
  31         def_bool y
  32
  33 config GENERIC_TIME_VSYSCALL
  34         def_bool y
  35
  36 config GENERIC_CLOCKEVENTS
  37         def_bool y
  38
  39 config GENERIC_HARDIRQS
  40         bool
  41         default y
  42
  43 config GENERIC_HARDIRQS_NO__DO_IRQ
  44         bool
  45         default y
  46
  47 config HAVE_SETUP_PER_CPU_AREA
  48         def_bool PPC64
  49
  50 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  51         def_bool PPC64
  52
  53 config IRQ_PER_CPU
  54         bool
  55         default y
  56
  57 config NR_IRQS
  58         int "Number of virtual interrupt numbers"
  59         range 32 32768
  60         default "512"
  61         help
  62           This defines the number of virtual interrupt numbers the kernel
  63           can manage. Virtual interrupt numbers are what you see in
  64           /proc/interrupts. If you configure your system to have too few,
  65           drivers will fail to load or worse - handle with care.
  66
  67 config STACKTRACE_SUPPORT
  68         bool
  69         default y
  70
  71 config HAVE_LATENCYTOP_SUPPORT
  72         def_bool y
  73
  74 config TRACE_IRQFLAGS_SUPPORT
  75         bool
  76         default y
  77
  78 config LOCKDEP_SUPPORT
  79         bool
  80         default y
  81
  82 config RWSEM_GENERIC_SPINLOCK
  83         bool
  84
  85 config RWSEM_XCHGADD_ALGORITHM
  86         bool
  87         default y
  88
  89 config GENERIC_LOCKBREAK
  90         bool
  91         default y
  92         depends on SMP && PREEMPT
  93
  94 config ARCH_HAS_ILOG2_U32
  95         bool
  96         default y
  97
  98 config ARCH_HAS_ILOG2_U64
  99         bool
 100         default y if 64BIT
 101
 102 config GENERIC_HWEIGHT
 103         bool
 104         default y
 105
 106 config GENERIC_FIND_NEXT_BIT
 107         bool
 108         default y
 109
 110 config GENERIC_GPIO
 111         bool
 112         help
 113           Generic GPIO API support
 114
 115 config ARCH_NO_VIRT_TO_BUS
 116         def_bool PPC64
 117
 118 config PPC
 119         bool
 120         default y
 121         select OF
 122         select OF_EARLY_FLATTREE
 123         select HAVE_FTRACE_MCOUNT_RECORD
 124         select HAVE_DYNAMIC_FTRACE
 125         select HAVE_FUNCTION_TRACER
 126         select HAVE_FUNCTION_GRAPH_TRACER
 127         select ARCH_WANT_OPTIONAL_GPIOLIB
 128         select HAVE_IDE
 129         select HAVE_IOREMAP_PROT
 130         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 131         select HAVE_KPROBES
 132         select HAVE_ARCH_KGDB
 133         select HAVE_KRETPROBES
 134         select HAVE_ARCH_TRACEHOOK
 135         select HAVE_MEMBLOCK
 136         select HAVE_DMA_ATTRS
 137         select HAVE_DMA_API_DEBUG
 138         select USE_GENERIC_SMP_HELPERS if SMP
 139         select HAVE_OPROFILE
 140         select HAVE_SYSCALL_WRAPPERS if PPC64
 141         select GENERIC_ATOMIC64 if PPC32
 142         select HAVE_IRQ_WORK
 143         select HAVE_PERF_EVENTS
 144         select HAVE_REGS_AND_STACK_ACCESS_API
 145         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 146
 147 config EARLY_PRINTK
 148         bool
 149         default y
 150
 151 config COMPAT
 152         bool
 153         default y if PPC64
 154         select COMPAT_BINFMT_ELF
 155
 156 config SYSVIPC_COMPAT
 157         bool
 158         depends on COMPAT && SYSVIPC
 159         default y
 160
 161 # All PPC32s use generic nvram driver through ppc_md
 162 config GENERIC_NVRAM
 163         bool
 164         default y if PPC32
 165
 166 config SCHED_OMIT_FRAME_POINTER
 167         bool
 168         default y
 169
 170 config ARCH_MAY_HAVE_PC_FDC
 171         bool
 172         default !PPC_PSERIES || PCI
 173
 174 config PPC_OF
 175         def_bool y
 176
 177 config PPC_UDBG_16550
 178         bool
 179         default n
 180
 181 config GENERIC_TBSYNC
 182         bool
 183         default y if PPC32 && SMP
 184         default n
 185
 186 config AUDIT_ARCH
 187         bool
 188         default y
 189
 190 config GENERIC_BUG
 191         bool
 192         default y
 193         depends on BUG
 194
 195 config SYS_SUPPORTS_APM_EMULATION
 196         default y if PMAC_APM_EMU
 197         bool
 198
 199 config DEFAULT_UIMAGE
 200         bool
 201         help
 202           Used to allow a board to specify it wants a uImage built by default
 203         default n
 204
 205 config REDBOOT
 206         bool
 207
 208 config ARCH_HIBERNATION_POSSIBLE
 209         bool
 210         default y
 211
 212 config ARCH_SUSPEND_POSSIBLE
 213         def_bool y
 214         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 215                    PPC_85xx || PPC_86xx || PPC_PSERIES || 44x || 40x
 216
 217 config PPC_DCR_NATIVE
 218         bool
 219         default n
 220
 221 config PPC_DCR_MMIO
 222         bool
 223         default n
 224
 225 config PPC_DCR
 226         bool
 227         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 228         default y
 229
 230 config PPC_OF_PLATFORM_PCI
 231         bool
 232         depends on PCI
 233         depends on PPC64 # not supported on 32 bits yet
 234         default n
 235
 236 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 237         def_bool y
 238
 239 config PPC_ADV_DEBUG_REGS
 240         bool
 241         depends on 40x || BOOKE
 242         default y
 243
 244 config PPC_ADV_DEBUG_IACS
 245         int
 246         depends on PPC_ADV_DEBUG_REGS
 247         default 4 if 44x
 248         default 2
 249
 250 config PPC_ADV_DEBUG_DACS
 251         int
 252         depends on PPC_ADV_DEBUG_REGS
 253         default 2
 254
 255 config PPC_ADV_DEBUG_DVCS
 256         int
 257         depends on PPC_ADV_DEBUG_REGS
 258         default 2 if 44x
 259         default 0
 260
 261 config PPC_ADV_DEBUG_DAC_RANGE
 262         bool
 263         depends on PPC_ADV_DEBUG_REGS && 44x
 264         default y
 265
 266 source "init/Kconfig"
 267
 268 source "kernel/Kconfig.freezer"
 269
 270 source "arch/powerpc/sysdev/Kconfig"
 271 source "arch/powerpc/platforms/Kconfig"
 272
 273 menu "Kernel options"
 274
 275 config HIGHMEM
 276         bool "High memory support"
 277         depends on PPC32
 278
 279 source kernel/time/Kconfig
 280 source kernel/Kconfig.hz
 281 source kernel/Kconfig.preempt
 282 source "fs/Kconfig.binfmt"
 283
 284 config HUGETLB_PAGE_SIZE_VARIABLE
 285         bool
 286         depends on HUGETLB_PAGE
 287         default y
 288
 289 config MATH_EMULATION
 290         bool "Math emulation"
 291         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 292         ---help---
 293           Some PowerPC chips designed for embedded applications do not have
 294           a floating-point unit and therefore do not implement the
 295           floating-point instructions in the PowerPC instruction set.  If you
 296           say Y here, the kernel will include code to emulate a floating-point
 297           unit, which will allow programs that use floating-point
 298           instructions to run.
 299
 300 config 8XX_MINIMAL_FPEMU
 301         bool "Minimal math emulation for 8xx"
 302         depends on 8xx && !MATH_EMULATION
 303         help
 304           Older arch/ppc kernels still emulated a few floating point
 305           instructions such as load and store, even when full math
 306           emulation is disabled.  Say "Y" here if you want to preserve
 307           this behavior.
 308
 309           It is recommended that you build a soft-float userspace instead.
 310
 311 config IOMMU_HELPER
 312         def_bool PPC64
 313
 314 config SWIOTLB
 315         bool "SWIOTLB support"
 316         default n
 317         select IOMMU_HELPER
 318         ---help---
 319           Support for IO bounce buffering for systems without an IOMMU.
 320           This allows us to DMA to the full physical address space on
 321           platforms where the size of a physical address is larger
 322           than the bus address.  Not all platforms support this.
 323
 324 config HOTPLUG_CPU
 325         bool "Support for enabling/disabling CPUs"
 326         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 327         ---help---
 328           Say Y here to be able to disable and re-enable individual
 329           CPUs at runtime on SMP machines.
 330
 331           Say N if you are unsure.
 332
 333 config ARCH_CPU_PROBE_RELEASE
 334         def_bool y
 335         depends on HOTPLUG_CPU
 336
 337 config ARCH_ENABLE_MEMORY_HOTPLUG
 338         def_bool y
 339
 340 config ARCH_HAS_WALK_MEMORY
 341         def_bool y
 342
 343 config ARCH_ENABLE_MEMORY_HOTREMOVE
 344         def_bool y
 345
 346 config KEXEC
 347         bool "kexec system call (EXPERIMENTAL)"
 348         depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL
 349         help
 350           kexec is a system call that implements the ability to shutdown your
 351           current kernel, and to start another kernel.  It is like a reboot
 352           but it is independent of the system firmware.   And like a reboot
 353           you can start any kernel with it, not just Linux.
 354
 355           The name comes from the similarity to the exec system call.
 356
 357           It is an ongoing process to be certain the hardware in a machine
 358           is properly shutdown, so do not be surprised if this code does not
 359           initially work for you.  It may help to enable device hotplugging
 360           support.  As of this writing the exact hardware interface is
 361           strongly in flux, so no good recommendation can be made.
 362
 363 config CRASH_DUMP
 364         bool "Build a kdump crash kernel"
 365         depends on PPC64 || 6xx || FSL_BOOKE
 366         select RELOCATABLE if PPC64 || FSL_BOOKE
 367         help
 368           Build a kernel suitable for use as a kdump capture kernel.
 369           The same kernel binary can be used as production kernel and dump
 370           capture kernel.
 371
 372 config PHYP_DUMP
 373         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 374         depends on PPC_PSERIES && EXPERIMENTAL
 375         help
 376           Hypervisor-assisted dump is meant to be a kdump replacement
 377           offering robustness and speed not possible without system
 378           hypervisor assistance.
 379
 380           If unsure, say "N"
 381
 382 config PPCBUG_NVRAM
 383         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 384         default y if PPC_PREP
 385
 386 config IRQ_ALL_CPUS
 387         bool "Distribute interrupts on all CPUs by default"
 388         depends on SMP && !MV64360
 389         help
 390           This option gives the kernel permission to distribute IRQs across
 391           multiple CPUs.  Saying N here will route all IRQs to the first
 392           CPU.  Generally saying Y is safe, although some problems have been
 393           reported with SMP Power Macintoshes with this option enabled.
 394
 395 config SPARSE_IRQ
 396         bool "Support sparse irq numbering"
 397         default n
 398         help
 399           This enables support for sparse irqs. This is useful for distro
 400           kernels that want to define a high CONFIG_NR_CPUS value but still
 401           want to have low kernel memory footprint on smaller machines.
 402
 403           ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
 404             out the irq_desc[] array in a more NUMA-friendly way. )
 405
 406           If you don't know what to do here, say N.
 407
 408 config NUMA
 409         bool "NUMA support"
 410         depends on PPC64
 411         default y if SMP && PPC_PSERIES
 412
 413 config NODES_SHIFT
 414         int
 415         default "8" if PPC64
 416         default "4"
 417         depends on NEED_MULTIPLE_NODES
 418
 419 config MAX_ACTIVE_REGIONS
 420         int
 421         default "256" if PPC64
 422         default "32"
 423
 424 config ARCH_SELECT_MEMORY_MODEL
 425         def_bool y
 426         depends on PPC64
 427
 428 config ARCH_FLATMEM_ENABLE
 429         def_bool y
 430         depends on (PPC64 && !NUMA) || PPC32
 431
 432 config ARCH_SPARSEMEM_ENABLE
 433         def_bool y
 434         depends on PPC64
 435         select SPARSEMEM_VMEMMAP_ENABLE
 436
 437 config ARCH_SPARSEMEM_DEFAULT
 438         def_bool y
 439         depends on (SMP && PPC_PSERIES) || PPC_PS3
 440
 441 config ARCH_POPULATES_NODE_MAP
 442         def_bool y
 443
 444 config SYS_SUPPORTS_HUGETLBFS
 445        def_bool y
 446        depends on PPC_BOOK3S_64
 447
 448 source "mm/Kconfig"
 449
 450 config ARCH_MEMORY_PROBE
 451         def_bool y
 452         depends on MEMORY_HOTPLUG
 453
 454 # Some NUMA nodes have memory ranges that span
 455 # other nodes.  Even though a pfn is valid and
 456 # between a node's start and end pfns, it may not
 457 # reside on that node.  See memmap_init_zone()
 458 # for details.
 459 config NODES_SPAN_OTHER_NODES
 460         def_bool y
 461         depends on NEED_MULTIPLE_NODES
 462
 463 config PPC_HAS_HASH_64K
 464         bool
 465         depends on PPC64
 466         default n
 467
 468 config STDBINUTILS
 469         bool "Using standard binutils settings"
 470         depends on 44x
 471         default y
 472         help
 473           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 474           Note, that kernel will be able to run only those applications,
 475           which had been compiled using binutils later than 2.17.50.0.3 with
 476           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 477           the older binutils, you can patch them with a trivial patch, which
 478           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 479
 480 choice
 481         prompt "Page size"
 482         default PPC_4K_PAGES
 483         help
 484           Select the kernel logical page size. Increasing the page size
 485           will reduce software overhead at each page boundary, allow
 486           hardware prefetch mechanisms to be more effective, and allow
 487           larger dma transfers increasing IO efficiency and reducing
 488           overhead. However the utilization of memory will increase.
 489           For example, each cached file will using a multiple of the
 490           page size to hold its contents and the difference between the
 491           end of file and the end of page is wasted.
 492
 493           Some dedicated systems, such as software raid serving with
 494           accelerated calculations, have shown significant increases.
 495
 496           If you configure a 64 bit kernel for 64k pages but the
 497           processor does not support them, then the kernel will simulate
 498           them with 4k pages, loading them on demand, but with the
 499           reduced software overhead and larger internal fragmentation.
 500           For the 32 bit kernel, a large page option will not be offered
 501           unless it is supported by the configured processor.
 502
 503           If unsure, choose 4K_PAGES.
 504
 505 config PPC_4K_PAGES
 506         bool "4k page size"
 507
 508 config PPC_16K_PAGES
 509         bool "16k page size" if 44x
 510
 511 config PPC_64K_PAGES
 512         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 513         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 514
 515 config PPC_256K_PAGES
 516         bool "256k page size" if 44x
 517         depends on !STDBINUTILS
 518         help
 519           Make the page size 256k.
 520
 521           As the ELF standard only requires alignment to support page
 522           sizes up to 64k, you will need to compile all of your user
 523           space applications with a non-standard binutils settings
 524           (see the STDBINUTILS description for details).
 525
 526           Say N unless you know what you are doing.
 527
 528 endchoice
 529
 530 config FORCE_MAX_ZONEORDER
 531         int "Maximum zone order"
 532         range 9 64 if PPC64 && PPC_64K_PAGES
 533         default "9" if PPC64 && PPC_64K_PAGES
 534         range 13 64 if PPC64 && !PPC_64K_PAGES
 535         default "13" if PPC64 && !PPC_64K_PAGES
 536         range 9 64 if PPC32 && PPC_16K_PAGES
 537         default "9" if PPC32 && PPC_16K_PAGES
 538         range 7 64 if PPC32 && PPC_64K_PAGES
 539         default "7" if PPC32 && PPC_64K_PAGES
 540         range 5 64 if PPC32 && PPC_256K_PAGES
 541         default "5" if PPC32 && PPC_256K_PAGES
 542         range 11 64
 543         default "11"
 544         help
 545           The kernel memory allocator divides physically contiguous memory
 546           blocks into "zones", where each zone is a power of two number of
 547           pages.  This option selects the largest power of two that the kernel
 548           keeps in the memory allocator.  If you need to allocate very large
 549           blocks of physically contiguous memory, then you may need to
 550           increase this value.
 551
 552           This config option is actually maximum order plus one. For example,
 553           a value of 11 means that the largest free memory block is 2^10 pages.
 554
 555           The page size is not necessarily 4KB.  For example, on 64-bit
 556           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 557           this in mind when choosing a value for this option.
 558
 559 config PPC_SUBPAGE_PROT
 560         bool "Support setting protections for 4k subpages"
 561         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 562         help
 563           This option adds support for a system call to allow user programs
 564           to set access permissions (read/write, readonly, or no access)
 565           on the 4k subpages of each 64k page.
 566
 567 config SCHED_SMT
 568         bool "SMT (Hyperthreading) scheduler support"
 569         depends on PPC64 && SMP
 570         help
 571           SMT scheduler support improves the CPU scheduler's decision making
 572           when dealing with POWER5 cpus at a cost of slightly increased
 573           overhead in some places. If unsure say N here.
 574
 575 config CMDLINE_BOOL
 576         bool "Default bootloader kernel arguments"
 577
 578 config CMDLINE
 579         string "Initial kernel command string"
 580         depends on CMDLINE_BOOL
 581         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 582         help
 583           On some platforms, there is currently no way for the boot loader to
 584           pass arguments to the kernel. For these platforms, you can supply
 585           some command-line options at build time by entering them here.  In
 586           most cases you will need to specify the root device here.
 587
 588 config EXTRA_TARGETS
 589         string "Additional default image types"
 590         help
 591           List additional targets to be built by the bootwrapper here (separated
 592           by spaces).  This is useful for targets that depend of device tree
 593           files in the .dts directory.
 594
 595           Targets in this list will be build as part of the default build
 596           target, or when the user does a 'make zImage' or a
 597           'make zImage.initrd'.
 598
 599           If unsure, leave blank
 600
 601 config ARCH_WANTS_FREEZER_CONTROL
 602         def_bool y
 603         depends on ADB_PMU
 604
 605 source kernel/power/Kconfig
 606
 607 config SECCOMP
 608         bool "Enable seccomp to safely compute untrusted bytecode"
 609         depends on PROC_FS
 610         default y
 611         help
 612           This kernel feature is useful for number crunching applications
 613           that may need to compute untrusted bytecode during their
 614           execution. By using pipes or other transports made available to
 615           the process as file descriptors supporting the read/write
 616           syscalls, it's possible to isolate those applications in
 617           their own address space using seccomp. Once seccomp is
 618           enabled via /proc/<pid>/seccomp, it cannot be disabled
 619           and the task is only allowed to execute a few safe syscalls
 620           defined by each seccomp mode.
 621
 622           If unsure, say Y. Only embedded should say N here.
 623
 624 endmenu
 625
 626 config ISA_DMA_API
 627         bool
 628         default !PPC_ISERIES || PCI
 629
 630 menu "Bus options"
 631
 632 config ISA
 633         bool "Support for ISA-bus hardware"
 634         depends on PPC_PREP || PPC_CHRP
 635         select PPC_I8259
 636         help
 637           Find out whether you have ISA slots on your motherboard.  ISA is the
 638           name of a bus system, i.e. the way the CPU talks to the other stuff
 639           inside your box.  If you have an Apple machine, say N here; if you
 640           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 641           you have an embedded board, consult your board documentation.
 642
 643 config ZONE_DMA
 644         bool
 645         default y
 646
 647 config NEED_DMA_MAP_STATE
 648         def_bool (PPC64 || NOT_COHERENT_CACHE)
 649
 650 config NEED_SG_DMA_LENGTH
 651         def_bool y
 652
 653 config GENERIC_ISA_DMA
 654         bool
 655         depends on ISA_DMA_API
 656         default y
 657
 658 config PPC_INDIRECT_PCI
 659         bool
 660         depends on PCI
 661         default y if 40x || 44x
 662         default n
 663
 664 config EISA
 665         bool
 666
 667 config SBUS
 668         bool
 669
 670 config FSL_SOC
 671         bool
 672
 673 config FSL_PCI
 674         bool
 675         select PPC_INDIRECT_PCI
 676         select PCI_QUIRKS
 677
 678 config FSL_PMC
 679         bool
 680         default y
 681         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 682         help
 683           Freescale MPC85xx/MPC86xx power management controller support
 684           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 685
 686 config PPC4xx_CPM
 687         bool
 688         default y
 689         depends on SUSPEND && (44x || 40x)
 690         help
 691           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 692           It also enables support for two different idle states (idle-wait
 693           and idle-doze).
 694
 695 config 4xx_SOC
 696         bool
 697
 698 config FSL_LBC
 699         bool "Freescale Local Bus support"
 700         depends on FSL_SOC
 701         help
 702           Enables reporting of errors from the Freescale local bus
 703           controller.  Also contains some common code used by
 704           drivers for specific local bus peripherals.
 705
 706 config FSL_GTM
 707         bool
 708         depends on PPC_83xx || QUICC_ENGINE || CPM2
 709         help
 710           Freescale General-purpose Timers support
 711
 712 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 713 config MCA
 714         bool
 715
 716 # Platforms that what PCI turned unconditionally just do select PCI
 717 # in their config node.  Platforms that want to choose at config
 718 # time should select PPC_PCI_CHOICE
 719 config PPC_PCI_CHOICE
 720         bool
 721
 722 config PCI
 723         bool "PCI support" if PPC_PCI_CHOICE
 724         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 725                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 726         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 727         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 728         select ARCH_SUPPORTS_MSI
 729         help
 730           Find out whether your system includes a PCI bus. PCI is the name of
 731           a bus system, i.e. the way the CPU talks to the other stuff inside
 732           your box.  If you say Y here, the kernel will include drivers and
 733           infrastructure code to support PCI bus devices.
 734
 735 config PCI_DOMAINS
 736         def_bool PCI
 737
 738 config PCI_SYSCALL
 739         def_bool PCI
 740
 741 config PCI_QSPAN
 742         bool "QSpan PCI"
 743         depends on !4xx && !CPM2 && 8xx
 744         select PPC_I8259
 745         help
 746           Say Y here if you have a system based on a Motorola 8xx-series
 747           embedded processor with a QSPAN PCI interface, otherwise say N.
 748
 749 config PCI_8260
 750         bool
 751         depends on PCI && 8260
 752         select PPC_INDIRECT_PCI
 753         default y
 754
 755 config 8260_PCI9
 756         bool "Enable workaround for MPC826x erratum PCI 9"
 757         depends on PCI_8260 && !8272
 758         default y
 759
 760 choice
 761         prompt "IDMA channel for PCI 9 workaround"
 762         depends on 8260_PCI9
 763
 764 config 8260_PCI9_IDMA1
 765         bool "IDMA1"
 766
 767 config 8260_PCI9_IDMA2
 768         bool "IDMA2"
 769
 770 config 8260_PCI9_IDMA3
 771         bool "IDMA3"
 772
 773 config 8260_PCI9_IDMA4
 774         bool "IDMA4"
 775
 776 endchoice
 777
 778 source "drivers/pci/pcie/Kconfig"
 779
 780 source "drivers/pci/Kconfig"
 781
 782 source "drivers/pcmcia/Kconfig"
 783
 784 source "drivers/pci/hotplug/Kconfig"
 785
 786 config HAS_RAPIDIO
 787         bool
 788         default n
 789
 790 config RAPIDIO
 791         bool "RapidIO support"
 792         depends on HAS_RAPIDIO
 793         help
 794           If you say Y here, the kernel will include drivers and
 795           infrastructure code to support RapidIO interconnect devices.
 796
 797 source "drivers/rapidio/Kconfig"
 798
 799 endmenu
 800
 801 menu "Advanced setup"
 802         depends on PPC32
 803
 804 config ADVANCED_OPTIONS
 805         bool "Prompt for advanced kernel configuration options"
 806         help
 807           This option will enable prompting for a variety of advanced kernel
 808           configuration options.  These options can cause the kernel to not
 809           work if they are set incorrectly, but can be used to optimize certain
 810           aspects of kernel memory management.
 811
 812           Unless you know what you are doing, say N here.
 813
 814 comment "Default settings for advanced configuration options are used"
 815         depends on !ADVANCED_OPTIONS
 816
 817 config LOWMEM_SIZE_BOOL
 818         bool "Set maximum low memory"
 819         depends on ADVANCED_OPTIONS
 820         help
 821           This option allows you to set the maximum amount of memory which
 822           will be used as "low memory", that is, memory which the kernel can
 823           access directly, without having to set up a kernel virtual mapping.
 824           This can be useful in optimizing the layout of kernel virtual
 825           memory.
 826
 827           Say N here unless you know what you are doing.
 828
 829 config LOWMEM_SIZE
 830         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 831         default "0x30000000"
 832
 833 config LOWMEM_CAM_NUM_BOOL
 834         bool "Set number of CAMs to use to map low memory"
 835         depends on ADVANCED_OPTIONS && FSL_BOOKE
 836         help
 837           This option allows you to set the maximum number of CAM slots that
 838           will be used to map low memory.  There are a limited number of slots
 839           available and even more limited number that will fit in the L1 MMU.
 840           However, using more entries will allow mapping more low memory.  This
 841           can be useful in optimizing the layout of kernel virtual memory.
 842
 843           Say N here unless you know what you are doing.
 844
 845 config LOWMEM_CAM_NUM
 846         depends on FSL_BOOKE
 847         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 848         default 3
 849
 850 config RELOCATABLE
 851         bool "Build a relocatable kernel (EXPERIMENTAL)"
 852         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 853         help
 854           This builds a kernel image that is capable of running at the
 855           location the kernel is loaded at (some alignment restrictions may
 856           exist).
 857
 858           One use is for the kexec on panic case where the recovery kernel
 859           must live at a different physical address than the primary
 860           kernel.
 861
 862           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 863           it has been loaded at and the compile time physical addresses
 864           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 865           setting can still be useful to bootwrappers that need to know the
 866           load location of the kernel (eg. u-boot/mkimage).
 867
 868 config PAGE_OFFSET_BOOL
 869         bool "Set custom page offset address"
 870         depends on ADVANCED_OPTIONS
 871         help
 872           This option allows you to set the kernel virtual address at which
 873           the kernel will map low memory.  This can be useful in optimizing
 874           the virtual memory layout of the system.
 875
 876           Say N here unless you know what you are doing.
 877
 878 config PAGE_OFFSET
 879         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 880         default "0xc0000000"
 881
 882 config KERNEL_START_BOOL
 883         bool "Set custom kernel base address"
 884         depends on ADVANCED_OPTIONS
 885         help
 886           This option allows you to set the kernel virtual address at which
 887           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 888           however there are times (like kdump) that one might not want them
 889           to be the same.
 890
 891           Say N here unless you know what you are doing.
 892
 893 config KERNEL_START
 894         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 895         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 896         default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
 897         default "0xc0000000"
 898
 899 config PHYSICAL_START_BOOL
 900         bool "Set physical address where the kernel is loaded"
 901         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 902         help
 903           This gives the physical address where the kernel is loaded.
 904
 905           Say N here unless you know what you are doing.
 906
 907 config PHYSICAL_START
 908         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 909         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
 910         default "0x00000000"
 911
 912 config PHYSICAL_ALIGN
 913         hex
 914         default "0x04000000" if FSL_BOOKE
 915         help
 916           This value puts the alignment restrictions on physical address
 917           where kernel is loaded and run from. Kernel is compiled for an
 918           address which meets above alignment restriction.
 919
 920 config TASK_SIZE_BOOL
 921         bool "Set custom user task size"
 922         depends on ADVANCED_OPTIONS
 923         help
 924           This option allows you to set the amount of virtual address space
 925           allocated to user tasks.  This can be useful in optimizing the
 926           virtual memory layout of the system.
 927
 928           Say N here unless you know what you are doing.
 929
 930 config TASK_SIZE
 931         hex "Size of user task space" if TASK_SIZE_BOOL
 932         default "0x80000000" if PPC_PREP || PPC_8xx
 933         default "0xc0000000"
 934
 935 config CONSISTENT_SIZE_BOOL
 936         bool "Set custom consistent memory pool size"
 937         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 938         help
 939           This option allows you to set the size of the
 940           consistent memory pool.  This pool of virtual memory
 941           is used to make consistent memory allocations.
 942
 943 config CONSISTENT_SIZE
 944         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 945         default "0x00200000" if NOT_COHERENT_CACHE
 946
 947 config PIN_TLB
 948         bool "Pinned Kernel TLBs (860 ONLY)"
 949         depends on ADVANCED_OPTIONS && 8xx
 950 endmenu
 951
 952 if PPC64
 953 config RELOCATABLE
 954         bool "Build a relocatable kernel"
 955         help
 956           This builds a kernel image that is capable of running anywhere
 957           in the RMA (real memory area) at any 16k-aligned base address.
 958           The kernel is linked as a position-independent executable (PIE)
 959           and contains dynamic relocations which are processed early
 960           in the bootup process.
 961
 962           One use is for the kexec on panic case where the recovery kernel
 963           must live at a different physical address than the primary
 964           kernel.
 965
 966 config PAGE_OFFSET
 967         hex
 968         default "0xc000000000000000"
 969 config KERNEL_START
 970         hex
 971         default "0xc000000000000000"
 972 config PHYSICAL_START
 973         hex
 974         default "0x00000000"
 975 endif
 976
 977 source "net/Kconfig"
 978
 979 source "drivers/Kconfig"
 980
 981 source "fs/Kconfig"
 982
 983 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 984
 985 source "lib/Kconfig"
 986
 987 source "arch/powerpc/Kconfig.debug"
 988
 989 source "security/Kconfig"
 990
 991 config KEYS_COMPAT
 992         bool
 993         depends on COMPAT && KEYS
 994         default y
 995
 996 source "crypto/Kconfig"
 997
 998 config PPC_CLOCK
 999         bool
1000         default n
1001         select HAVE_CLK
1002
1003 config PPC_LIB_RHEAP
1004         bool
1005
1006 source "arch/powerpc/kvm/Kconfig"