arch/powerpc/Kconfig

   1 source "arch/powerpc/platforms/Kconfig.cputype"
   2
   3 config PPC32
   4         bool
   5         default y if !PPC64
   6
   7 config 64BIT
   8         bool
   9         default y if PPC64
  10
  11 config WORD_SIZE
  12         int
  13         default 64 if PPC64
  14         default 32 if !PPC64
  15
  16 config ARCH_PHYS_ADDR_T_64BIT
  17        def_bool PPC64 || PHYS_64BIT
  18
  19 config MMU
  20         bool
  21         default y
  22
  23 config GENERIC_CMOS_UPDATE
  24         def_bool y
  25
  26 config GENERIC_TIME
  27         def_bool y
  28
  29 config GENERIC_TIME_VSYSCALL
  30         def_bool y
  31
  32 config GENERIC_CLOCKEVENTS
  33         def_bool y
  34
  35 config GENERIC_HARDIRQS
  36         bool
  37         default y
  38
  39 config GENERIC_HARDIRQS_NO__DO_IRQ
  40         bool
  41         default y
  42
  43 config HAVE_SETUP_PER_CPU_AREA
  44         def_bool PPC64
  45
  46 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  47         def_bool PPC64
  48
  49 config IRQ_PER_CPU
  50         bool
  51         default y
  52
  53 config NR_IRQS
  54         int "Number of virtual interrupt numbers"
  55         range 32 32768
  56         default "512"
  57         help
  58           This defines the number of virtual interrupt numbers the kernel
  59           can manage. Virtual interrupt numbers are what you see in
  60           /proc/interrupts. If you configure your system to have too few,
  61           drivers will fail to load or worse - handle with care.
  62
  63 config STACKTRACE_SUPPORT
  64         bool
  65         default y
  66
  67 config HAVE_LATENCYTOP_SUPPORT
  68         def_bool y
  69
  70 config TRACE_IRQFLAGS_SUPPORT
  71         bool
  72         default y
  73
  74 config LOCKDEP_SUPPORT
  75         bool
  76         default y
  77
  78 config RWSEM_GENERIC_SPINLOCK
  79         bool
  80
  81 config RWSEM_XCHGADD_ALGORITHM
  82         bool
  83         default y
  84
  85 config GENERIC_LOCKBREAK
  86         bool
  87         default y
  88         depends on SMP && PREEMPT
  89
  90 config ARCH_HAS_ILOG2_U32
  91         bool
  92         default y
  93
  94 config ARCH_HAS_ILOG2_U64
  95         bool
  96         default y if 64BIT
  97
  98 config GENERIC_HWEIGHT
  99         bool
 100         default y
 101
 102 config GENERIC_FIND_NEXT_BIT
 103         bool
 104         default y
 105
 106 config GENERIC_GPIO
 107         bool
 108         help
 109           Generic GPIO API support
 110
 111 config ARCH_NO_VIRT_TO_BUS
 112         def_bool PPC64
 113
 114 config PPC
 115         bool
 116         default y
 117         select HAVE_FTRACE_MCOUNT_RECORD
 118         select HAVE_DYNAMIC_FTRACE
 119         select HAVE_FUNCTION_TRACER
 120         select HAVE_FUNCTION_GRAPH_TRACER
 121         select ARCH_WANT_OPTIONAL_GPIOLIB
 122         select HAVE_IDE
 123         select HAVE_IOREMAP_PROT
 124         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 125         select HAVE_KPROBES
 126         select HAVE_ARCH_KGDB
 127         select HAVE_KRETPROBES
 128         select HAVE_ARCH_TRACEHOOK
 129         select HAVE_MEMBLOCK
 130         select HAVE_DMA_ATTRS
 131         select HAVE_DMA_API_DEBUG
 132         select USE_GENERIC_SMP_HELPERS if SMP
 133         select HAVE_OPROFILE
 134         select HAVE_SYSCALL_WRAPPERS if PPC64
 135         select GENERIC_ATOMIC64 if PPC32
 136         select HAVE_PERF_EVENTS
 137         select HAVE_REGS_AND_STACK_ACCESS_API
 138
 139 config EARLY_PRINTK
 140         bool
 141         default y
 142
 143 config COMPAT
 144         bool
 145         default y if PPC64
 146         select COMPAT_BINFMT_ELF
 147
 148 config SYSVIPC_COMPAT
 149         bool
 150         depends on COMPAT && SYSVIPC
 151         default y
 152
 153 # All PPC32s use generic nvram driver through ppc_md
 154 config GENERIC_NVRAM
 155         bool
 156         default y if PPC32
 157
 158 config SCHED_OMIT_FRAME_POINTER
 159         bool
 160         default y
 161
 162 config ARCH_MAY_HAVE_PC_FDC
 163         bool
 164         default !PPC_PSERIES || PCI
 165
 166 config PPC_OF
 167         def_bool y
 168
 169 config OF
 170         def_bool y
 171         select OF_FLATTREE
 172
 173 config PPC_UDBG_16550
 174         bool
 175         default n
 176
 177 config GENERIC_TBSYNC
 178         bool
 179         default y if PPC32 && SMP
 180         default n
 181
 182 config AUDIT_ARCH
 183         bool
 184         default y
 185
 186 config GENERIC_BUG
 187         bool
 188         default y
 189         depends on BUG
 190
 191 config SYS_SUPPORTS_APM_EMULATION
 192         default y if PMAC_APM_EMU
 193         bool
 194
 195 config DTC
 196        bool
 197        default y
 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
 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 && !SMP)) && 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
 366         select RELOCATABLE if PPC64
 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 PROC_DEVICETREE
 576         bool "Support for device tree in /proc"
 577         depends on PROC_FS
 578         help
 579           This option adds a device-tree directory under /proc which contains
 580           an image of the device tree that the kernel copies from Open
 581           Firmware or other boot firmware. If unsure, say Y here.
 582
 583 config CMDLINE_BOOL
 584         bool "Default bootloader kernel arguments"
 585
 586 config CMDLINE
 587         string "Initial kernel command string"
 588         depends on CMDLINE_BOOL
 589         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 590         help
 591           On some platforms, there is currently no way for the boot loader to
 592           pass arguments to the kernel. For these platforms, you can supply
 593           some command-line options at build time by entering them here.  In
 594           most cases you will need to specify the root device here.
 595
 596 config EXTRA_TARGETS
 597         string "Additional default image types"
 598         help
 599           List additional targets to be built by the bootwrapper here (separated
 600           by spaces).  This is useful for targets that depend of device tree
 601           files in the .dts directory.
 602
 603           Targets in this list will be build as part of the default build
 604           target, or when the user does a 'make zImage' or a
 605           'make zImage.initrd'.
 606
 607           If unsure, leave blank
 608
 609 if !44x || BROKEN
 610 config ARCH_WANTS_FREEZER_CONTROL
 611         def_bool y
 612         depends on ADB_PMU
 613
 614 source kernel/power/Kconfig
 615 endif
 616
 617 config SECCOMP
 618         bool "Enable seccomp to safely compute untrusted bytecode"
 619         depends on PROC_FS
 620         default y
 621         help
 622           This kernel feature is useful for number crunching applications
 623           that may need to compute untrusted bytecode during their
 624           execution. By using pipes or other transports made available to
 625           the process as file descriptors supporting the read/write
 626           syscalls, it's possible to isolate those applications in
 627           their own address space using seccomp. Once seccomp is
 628           enabled via /proc/<pid>/seccomp, it cannot be disabled
 629           and the task is only allowed to execute a few safe syscalls
 630           defined by each seccomp mode.
 631
 632           If unsure, say Y. Only embedded should say N here.
 633
 634 endmenu
 635
 636 config ISA_DMA_API
 637         bool
 638         default !PPC_ISERIES || PCI
 639
 640 menu "Bus options"
 641
 642 config ISA
 643         bool "Support for ISA-bus hardware"
 644         depends on PPC_PREP || PPC_CHRP
 645         select PPC_I8259
 646         help
 647           Find out whether you have ISA slots on your motherboard.  ISA is the
 648           name of a bus system, i.e. the way the CPU talks to the other stuff
 649           inside your box.  If you have an Apple machine, say N here; if you
 650           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 651           you have an embedded board, consult your board documentation.
 652
 653 config ZONE_DMA
 654         bool
 655         default y
 656
 657 config NEED_DMA_MAP_STATE
 658         def_bool (PPC64 || NOT_COHERENT_CACHE)
 659
 660 config NEED_SG_DMA_LENGTH
 661         def_bool y
 662
 663 config GENERIC_ISA_DMA
 664         bool
 665         depends on PPC64 || POWER4 || 6xx && !CPM2
 666         default y
 667
 668 config PPC_INDIRECT_PCI
 669         bool
 670         depends on PCI
 671         default y if 40x || 44x
 672         default n
 673
 674 config EISA
 675         bool
 676
 677 config SBUS
 678         bool
 679
 680 config FSL_SOC
 681         bool
 682
 683 config FSL_PCI
 684         bool
 685         select PPC_INDIRECT_PCI
 686         select PCI_QUIRKS
 687
 688 config FSL_PMC
 689         bool
 690         default y
 691         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 692         help
 693           Freescale MPC85xx/MPC86xx power management controller support
 694           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 695
 696 config 4xx_SOC
 697         bool
 698
 699 config FSL_LBC
 700         bool
 701         help
 702           Freescale Localbus support
 703
 704 config FSL_GTM
 705         bool
 706         depends on PPC_83xx || QUICC_ENGINE || CPM2
 707         help
 708           Freescale General-purpose Timers support
 709
 710 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 711 config MCA
 712         bool
 713
 714 # Platforms that what PCI turned unconditionally just do select PCI
 715 # in their config node.  Platforms that want to choose at config
 716 # time should select PPC_PCI_CHOICE
 717 config PPC_PCI_CHOICE
 718         bool
 719
 720 config PCI
 721         bool "PCI support" if PPC_PCI_CHOICE
 722         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 723                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 724         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 725         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 726         select ARCH_SUPPORTS_MSI
 727         help
 728           Find out whether your system includes a PCI bus. PCI is the name of
 729           a bus system, i.e. the way the CPU talks to the other stuff inside
 730           your box.  If you say Y here, the kernel will include drivers and
 731           infrastructure code to support PCI bus devices.
 732
 733 config PCI_DOMAINS
 734         def_bool PCI
 735
 736 config PCI_SYSCALL
 737         def_bool PCI
 738
 739 config PCI_QSPAN
 740         bool "QSpan PCI"
 741         depends on !4xx && !CPM2 && 8xx
 742         select PPC_I8259
 743         help
 744           Say Y here if you have a system based on a Motorola 8xx-series
 745           embedded processor with a QSPAN PCI interface, otherwise say N.
 746
 747 config PCI_8260
 748         bool
 749         depends on PCI && 8260
 750         select PPC_INDIRECT_PCI
 751         default y
 752
 753 config 8260_PCI9
 754         bool "Enable workaround for MPC826x erratum PCI 9"
 755         depends on PCI_8260 && !8272
 756         default y
 757
 758 choice
 759         prompt "IDMA channel for PCI 9 workaround"
 760         depends on 8260_PCI9
 761
 762 config 8260_PCI9_IDMA1
 763         bool "IDMA1"
 764
 765 config 8260_PCI9_IDMA2
 766         bool "IDMA2"
 767
 768 config 8260_PCI9_IDMA3
 769         bool "IDMA3"
 770
 771 config 8260_PCI9_IDMA4
 772         bool "IDMA4"
 773
 774 endchoice
 775
 776 source "drivers/pci/pcie/Kconfig"
 777
 778 source "drivers/pci/Kconfig"
 779
 780 source "drivers/pcmcia/Kconfig"
 781
 782 source "drivers/pci/hotplug/Kconfig"
 783
 784 config HAS_RAPIDIO
 785         bool
 786         default n
 787
 788 config RAPIDIO
 789         bool "RapidIO support"
 790         depends on HAS_RAPIDIO
 791         help
 792           If you say Y here, the kernel will include drivers and
 793           infrastructure code to support RapidIO interconnect devices.
 794
 795 source "drivers/rapidio/Kconfig"
 796
 797 endmenu
 798
 799 menu "Advanced setup"
 800         depends on PPC32
 801
 802 config ADVANCED_OPTIONS
 803         bool "Prompt for advanced kernel configuration options"
 804         help
 805           This option will enable prompting for a variety of advanced kernel
 806           configuration options.  These options can cause the kernel to not
 807           work if they are set incorrectly, but can be used to optimize certain
 808           aspects of kernel memory management.
 809
 810           Unless you know what you are doing, say N here.
 811
 812 comment "Default settings for advanced configuration options are used"
 813         depends on !ADVANCED_OPTIONS
 814
 815 config LOWMEM_SIZE_BOOL
 816         bool "Set maximum low memory"
 817         depends on ADVANCED_OPTIONS
 818         help
 819           This option allows you to set the maximum amount of memory which
 820           will be used as "low memory", that is, memory which the kernel can
 821           access directly, without having to set up a kernel virtual mapping.
 822           This can be useful in optimizing the layout of kernel virtual
 823           memory.
 824
 825           Say N here unless you know what you are doing.
 826
 827 config LOWMEM_SIZE
 828         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 829         default "0x30000000"
 830
 831 config LOWMEM_CAM_NUM_BOOL
 832         bool "Set number of CAMs to use to map low memory"
 833         depends on ADVANCED_OPTIONS && FSL_BOOKE
 834         help
 835           This option allows you to set the maximum number of CAM slots that
 836           will be used to map low memory.  There are a limited number of slots
 837           available and even more limited number that will fit in the L1 MMU.
 838           However, using more entries will allow mapping more low memory.  This
 839           can be useful in optimizing the layout of kernel virtual memory.
 840
 841           Say N here unless you know what you are doing.
 842
 843 config LOWMEM_CAM_NUM
 844         depends on FSL_BOOKE
 845         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 846         default 3
 847
 848 config RELOCATABLE
 849         bool "Build a relocatable kernel (EXPERIMENTAL)"
 850         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 851         help
 852           This builds a kernel image that is capable of running at the
 853           location the kernel is loaded at (some alignment restrictions may
 854           exist).
 855
 856           One use is for the kexec on panic case where the recovery kernel
 857           must live at a different physical address than the primary
 858           kernel.
 859
 860           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 861           it has been loaded at and the compile time physical addresses
 862           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 863           setting can still be useful to bootwrappers that need to know the
 864           load location of the kernel (eg. u-boot/mkimage).
 865
 866 config PAGE_OFFSET_BOOL
 867         bool "Set custom page offset address"
 868         depends on ADVANCED_OPTIONS
 869         help
 870           This option allows you to set the kernel virtual address at which
 871           the kernel will map low memory.  This can be useful in optimizing
 872           the virtual memory layout of the system.
 873
 874           Say N here unless you know what you are doing.
 875
 876 config PAGE_OFFSET
 877         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 878         default "0xc0000000"
 879
 880 config KERNEL_START_BOOL
 881         bool "Set custom kernel base address"
 882         depends on ADVANCED_OPTIONS
 883         help
 884           This option allows you to set the kernel virtual address at which
 885           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 886           however there are times (like kdump) that one might not want them
 887           to be the same.
 888
 889           Say N here unless you know what you are doing.
 890
 891 config KERNEL_START
 892         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 893         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 894         default "0xc2000000" if CRASH_DUMP
 895         default "0xc0000000"
 896
 897 config PHYSICAL_START_BOOL
 898         bool "Set physical address where the kernel is loaded"
 899         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 900         help
 901           This gives the physical address where the kernel is loaded.
 902
 903           Say N here unless you know what you are doing.
 904
 905 config PHYSICAL_START
 906         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 907         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
 908         default "0x00000000"
 909
 910 config PHYSICAL_ALIGN
 911         hex
 912         default "0x04000000" if FSL_BOOKE
 913         help
 914           This value puts the alignment restrictions on physical address
 915           where kernel is loaded and run from. Kernel is compiled for an
 916           address which meets above alignment restriction.
 917
 918 config TASK_SIZE_BOOL
 919         bool "Set custom user task size"
 920         depends on ADVANCED_OPTIONS
 921         help
 922           This option allows you to set the amount of virtual address space
 923           allocated to user tasks.  This can be useful in optimizing the
 924           virtual memory layout of the system.
 925
 926           Say N here unless you know what you are doing.
 927
 928 config TASK_SIZE
 929         hex "Size of user task space" if TASK_SIZE_BOOL
 930         default "0x80000000" if PPC_PREP || PPC_8xx
 931         default "0xc0000000"
 932
 933 config CONSISTENT_SIZE_BOOL
 934         bool "Set custom consistent memory pool size"
 935         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 936         help
 937           This option allows you to set the size of the
 938           consistent memory pool.  This pool of virtual memory
 939           is used to make consistent memory allocations.
 940
 941 config CONSISTENT_SIZE
 942         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 943         default "0x00200000" if NOT_COHERENT_CACHE
 944
 945 config PIN_TLB
 946         bool "Pinned Kernel TLBs (860 ONLY)"
 947         depends on ADVANCED_OPTIONS && 8xx
 948 endmenu
 949
 950 if PPC64
 951 config RELOCATABLE
 952         bool "Build a relocatable kernel"
 953         help
 954           This builds a kernel image that is capable of running anywhere
 955           in the RMA (real memory area) at any 16k-aligned base address.
 956           The kernel is linked as a position-independent executable (PIE)
 957           and contains dynamic relocations which are processed early
 958           in the bootup process.
 959
 960           One use is for the kexec on panic case where the recovery kernel
 961           must live at a different physical address than the primary
 962           kernel.
 963
 964 config PAGE_OFFSET
 965         hex
 966         default "0xc000000000000000"
 967 config KERNEL_START
 968         hex
 969         default "0xc000000000000000"
 970 config PHYSICAL_START
 971         hex
 972         default "0x00000000"
 973 endif
 974
 975 source "net/Kconfig"
 976
 977 source "drivers/Kconfig"
 978
 979 source "fs/Kconfig"
 980
 981 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 982
 983 source "lib/Kconfig"
 984
 985 source "arch/powerpc/Kconfig.debug"
 986
 987 source "security/Kconfig"
 988
 989 config KEYS_COMPAT
 990         bool
 991         depends on COMPAT && KEYS
 992         default y
 993
 994 source "crypto/Kconfig"
 995
 996 config PPC_CLOCK
 997         bool
 998         default n
 999         select HAVE_CLK
1000
1001 config PPC_LIB_RHEAP
1002         bool
1003
1004 source "arch/powerpc/kvm/Kconfig"