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_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
 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 if !44x || BROKEN
 602 config ARCH_WANTS_FREEZER_CONTROL
 603         def_bool y
 604         depends on ADB_PMU
 605
 606 source kernel/power/Kconfig
 607 endif
 608
 609 config SECCOMP
 610         bool "Enable seccomp to safely compute untrusted bytecode"
 611         depends on PROC_FS
 612         default y
 613         help
 614           This kernel feature is useful for number crunching applications
 615           that may need to compute untrusted bytecode during their
 616           execution. By using pipes or other transports made available to
 617           the process as file descriptors supporting the read/write
 618           syscalls, it's possible to isolate those applications in
 619           their own address space using seccomp. Once seccomp is
 620           enabled via /proc/<pid>/seccomp, it cannot be disabled
 621           and the task is only allowed to execute a few safe syscalls
 622           defined by each seccomp mode.
 623
 624           If unsure, say Y. Only embedded should say N here.
 625
 626 endmenu
 627
 628 config ISA_DMA_API
 629         bool
 630         default !PPC_ISERIES || PCI
 631
 632 menu "Bus options"
 633
 634 config ISA
 635         bool "Support for ISA-bus hardware"
 636         depends on PPC_PREP || PPC_CHRP
 637         select PPC_I8259
 638         help
 639           Find out whether you have ISA slots on your motherboard.  ISA is the
 640           name of a bus system, i.e. the way the CPU talks to the other stuff
 641           inside your box.  If you have an Apple machine, say N here; if you
 642           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 643           you have an embedded board, consult your board documentation.
 644
 645 config ZONE_DMA
 646         bool
 647         default y
 648
 649 config NEED_DMA_MAP_STATE
 650         def_bool (PPC64 || NOT_COHERENT_CACHE)
 651
 652 config NEED_SG_DMA_LENGTH
 653         def_bool y
 654
 655 config GENERIC_ISA_DMA
 656         bool
 657         depends on ISA_DMA_API
 658         default y
 659
 660 config PPC_INDIRECT_PCI
 661         bool
 662         depends on PCI
 663         default y if 40x || 44x
 664         default n
 665
 666 config EISA
 667         bool
 668
 669 config SBUS
 670         bool
 671
 672 config FSL_SOC
 673         bool
 674
 675 config FSL_PCI
 676         bool
 677         select PPC_INDIRECT_PCI
 678         select PCI_QUIRKS
 679
 680 config FSL_PMC
 681         bool
 682         default y
 683         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 684         help
 685           Freescale MPC85xx/MPC86xx power management controller support
 686           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 687
 688 config 4xx_SOC
 689         bool
 690
 691 config FSL_LBC
 692         bool "Freescale Local Bus support"
 693         depends on FSL_SOC
 694         help
 695           Enables reporting of errors from the Freescale local bus
 696           controller.  Also contains some common code used by
 697           drivers for specific local bus peripherals.
 698
 699 config FSL_GTM
 700         bool
 701         depends on PPC_83xx || QUICC_ENGINE || CPM2
 702         help
 703           Freescale General-purpose Timers support
 704
 705 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 706 config MCA
 707         bool
 708
 709 # Platforms that what PCI turned unconditionally just do select PCI
 710 # in their config node.  Platforms that want to choose at config
 711 # time should select PPC_PCI_CHOICE
 712 config PPC_PCI_CHOICE
 713         bool
 714
 715 config PCI
 716         bool "PCI support" if PPC_PCI_CHOICE
 717         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 718                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 719         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 720         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 721         select ARCH_SUPPORTS_MSI
 722         help
 723           Find out whether your system includes a PCI bus. PCI is the name of
 724           a bus system, i.e. the way the CPU talks to the other stuff inside
 725           your box.  If you say Y here, the kernel will include drivers and
 726           infrastructure code to support PCI bus devices.
 727
 728 config PCI_DOMAINS
 729         def_bool PCI
 730
 731 config PCI_SYSCALL
 732         def_bool PCI
 733
 734 config PCI_QSPAN
 735         bool "QSpan PCI"
 736         depends on !4xx && !CPM2 && 8xx
 737         select PPC_I8259
 738         help
 739           Say Y here if you have a system based on a Motorola 8xx-series
 740           embedded processor with a QSPAN PCI interface, otherwise say N.
 741
 742 config PCI_8260
 743         bool
 744         depends on PCI && 8260
 745         select PPC_INDIRECT_PCI
 746         default y
 747
 748 config 8260_PCI9
 749         bool "Enable workaround for MPC826x erratum PCI 9"
 750         depends on PCI_8260 && !8272
 751         default y
 752
 753 choice
 754         prompt "IDMA channel for PCI 9 workaround"
 755         depends on 8260_PCI9
 756
 757 config 8260_PCI9_IDMA1
 758         bool "IDMA1"
 759
 760 config 8260_PCI9_IDMA2
 761         bool "IDMA2"
 762
 763 config 8260_PCI9_IDMA3
 764         bool "IDMA3"
 765
 766 config 8260_PCI9_IDMA4
 767         bool "IDMA4"
 768
 769 endchoice
 770
 771 source "drivers/pci/pcie/Kconfig"
 772
 773 source "drivers/pci/Kconfig"
 774
 775 source "drivers/pcmcia/Kconfig"
 776
 777 source "drivers/pci/hotplug/Kconfig"
 778
 779 config HAS_RAPIDIO
 780         bool
 781         default n
 782
 783 config RAPIDIO
 784         bool "RapidIO support"
 785         depends on HAS_RAPIDIO
 786         help
 787           If you say Y here, the kernel will include drivers and
 788           infrastructure code to support RapidIO interconnect devices.
 789
 790 source "drivers/rapidio/Kconfig"
 791
 792 endmenu
 793
 794 menu "Advanced setup"
 795         depends on PPC32
 796
 797 config ADVANCED_OPTIONS
 798         bool "Prompt for advanced kernel configuration options"
 799         help
 800           This option will enable prompting for a variety of advanced kernel
 801           configuration options.  These options can cause the kernel to not
 802           work if they are set incorrectly, but can be used to optimize certain
 803           aspects of kernel memory management.
 804
 805           Unless you know what you are doing, say N here.
 806
 807 comment "Default settings for advanced configuration options are used"
 808         depends on !ADVANCED_OPTIONS
 809
 810 config LOWMEM_SIZE_BOOL
 811         bool "Set maximum low memory"
 812         depends on ADVANCED_OPTIONS
 813         help
 814           This option allows you to set the maximum amount of memory which
 815           will be used as "low memory", that is, memory which the kernel can
 816           access directly, without having to set up a kernel virtual mapping.
 817           This can be useful in optimizing the layout of kernel virtual
 818           memory.
 819
 820           Say N here unless you know what you are doing.
 821
 822 config LOWMEM_SIZE
 823         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 824         default "0x30000000"
 825
 826 config LOWMEM_CAM_NUM_BOOL
 827         bool "Set number of CAMs to use to map low memory"
 828         depends on ADVANCED_OPTIONS && FSL_BOOKE
 829         help
 830           This option allows you to set the maximum number of CAM slots that
 831           will be used to map low memory.  There are a limited number of slots
 832           available and even more limited number that will fit in the L1 MMU.
 833           However, using more entries will allow mapping more low memory.  This
 834           can be useful in optimizing the layout of kernel virtual memory.
 835
 836           Say N here unless you know what you are doing.
 837
 838 config LOWMEM_CAM_NUM
 839         depends on FSL_BOOKE
 840         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 841         default 3
 842
 843 config RELOCATABLE
 844         bool "Build a relocatable kernel (EXPERIMENTAL)"
 845         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 846         help
 847           This builds a kernel image that is capable of running at the
 848           location the kernel is loaded at (some alignment restrictions may
 849           exist).
 850
 851           One use is for the kexec on panic case where the recovery kernel
 852           must live at a different physical address than the primary
 853           kernel.
 854
 855           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 856           it has been loaded at and the compile time physical addresses
 857           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 858           setting can still be useful to bootwrappers that need to know the
 859           load location of the kernel (eg. u-boot/mkimage).
 860
 861 config PAGE_OFFSET_BOOL
 862         bool "Set custom page offset address"
 863         depends on ADVANCED_OPTIONS
 864         help
 865           This option allows you to set the kernel virtual address at which
 866           the kernel will map low memory.  This can be useful in optimizing
 867           the virtual memory layout of the system.
 868
 869           Say N here unless you know what you are doing.
 870
 871 config PAGE_OFFSET
 872         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 873         default "0xc0000000"
 874
 875 config KERNEL_START_BOOL
 876         bool "Set custom kernel base address"
 877         depends on ADVANCED_OPTIONS
 878         help
 879           This option allows you to set the kernel virtual address at which
 880           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 881           however there are times (like kdump) that one might not want them
 882           to be the same.
 883
 884           Say N here unless you know what you are doing.
 885
 886 config KERNEL_START
 887         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 888         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 889         default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
 890         default "0xc0000000"
 891
 892 config PHYSICAL_START_BOOL
 893         bool "Set physical address where the kernel is loaded"
 894         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 895         help
 896           This gives the physical address where the kernel is loaded.
 897
 898           Say N here unless you know what you are doing.
 899
 900 config PHYSICAL_START
 901         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 902         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
 903         default "0x00000000"
 904
 905 config PHYSICAL_ALIGN
 906         hex
 907         default "0x04000000" if FSL_BOOKE
 908         help
 909           This value puts the alignment restrictions on physical address
 910           where kernel is loaded and run from. Kernel is compiled for an
 911           address which meets above alignment restriction.
 912
 913 config TASK_SIZE_BOOL
 914         bool "Set custom user task size"
 915         depends on ADVANCED_OPTIONS
 916         help
 917           This option allows you to set the amount of virtual address space
 918           allocated to user tasks.  This can be useful in optimizing the
 919           virtual memory layout of the system.
 920
 921           Say N here unless you know what you are doing.
 922
 923 config TASK_SIZE
 924         hex "Size of user task space" if TASK_SIZE_BOOL
 925         default "0x80000000" if PPC_PREP || PPC_8xx
 926         default "0xc0000000"
 927
 928 config CONSISTENT_SIZE_BOOL
 929         bool "Set custom consistent memory pool size"
 930         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 931         help
 932           This option allows you to set the size of the
 933           consistent memory pool.  This pool of virtual memory
 934           is used to make consistent memory allocations.
 935
 936 config CONSISTENT_SIZE
 937         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 938         default "0x00200000" if NOT_COHERENT_CACHE
 939
 940 config PIN_TLB
 941         bool "Pinned Kernel TLBs (860 ONLY)"
 942         depends on ADVANCED_OPTIONS && 8xx
 943 endmenu
 944
 945 if PPC64
 946 config RELOCATABLE
 947         bool "Build a relocatable kernel"
 948         help
 949           This builds a kernel image that is capable of running anywhere
 950           in the RMA (real memory area) at any 16k-aligned base address.
 951           The kernel is linked as a position-independent executable (PIE)
 952           and contains dynamic relocations which are processed early
 953           in the bootup process.
 954
 955           One use is for the kexec on panic case where the recovery kernel
 956           must live at a different physical address than the primary
 957           kernel.
 958
 959 config PAGE_OFFSET
 960         hex
 961         default "0xc000000000000000"
 962 config KERNEL_START
 963         hex
 964         default "0xc000000000000000"
 965 config PHYSICAL_START
 966         hex
 967         default "0x00000000"
 968 endif
 969
 970 source "net/Kconfig"
 971
 972 source "drivers/Kconfig"
 973
 974 source "fs/Kconfig"
 975
 976 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 977
 978 source "lib/Kconfig"
 979
 980 source "arch/powerpc/Kconfig.debug"
 981
 982 source "security/Kconfig"
 983
 984 config KEYS_COMPAT
 985         bool
 986         depends on COMPAT && KEYS
 987         default y
 988
 989 source "crypto/Kconfig"
 990
 991 config PPC_CLOCK
 992         bool
 993         default n
 994         select HAVE_CLK
 995
 996 config PPC_LIB_RHEAP
 997         bool
 998
 999 source "arch/powerpc/kvm/Kconfig"