linux/arch/powerpc/Kconfig
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   1source "arch/powerpc/platforms/Kconfig.cputype"
   2
   3config PPC32
   4        bool
   5        default y if !PPC64
   6
   7config 32BIT
   8        bool
   9        default y if PPC32
  10
  11config 64BIT
  12        bool
  13        default y if PPC64
  14
  15config WORD_SIZE
  16        int
  17        default 64 if PPC64
  18        default 32 if !PPC64
  19
  20config ARCH_PHYS_ADDR_T_64BIT
  21       def_bool PPC64 || PHYS_64BIT
  22
  23config ARCH_DMA_ADDR_T_64BIT
  24        def_bool ARCH_PHYS_ADDR_T_64BIT
  25
  26config MMU
  27        bool
  28        default y
  29
  30config HAVE_SETUP_PER_CPU_AREA
  31        def_bool PPC64
  32
  33config NEED_PER_CPU_EMBED_FIRST_CHUNK
  34        def_bool PPC64
  35
  36config NR_IRQS
  37        int "Number of virtual interrupt numbers"
  38        range 32 32768
  39        default "512"
  40        help
  41          This defines the number of virtual interrupt numbers the kernel
  42          can manage. Virtual interrupt numbers are what you see in
  43          /proc/interrupts. If you configure your system to have too few,
  44          drivers will fail to load or worse - handle with care.
  45
  46config STACKTRACE_SUPPORT
  47        bool
  48        default y
  49
  50config HAVE_LATENCYTOP_SUPPORT
  51        def_bool y
  52
  53config TRACE_IRQFLAGS_SUPPORT
  54        bool
  55        default y
  56
  57config LOCKDEP_SUPPORT
  58        bool
  59        default y
  60
  61config RWSEM_GENERIC_SPINLOCK
  62        bool
  63
  64config RWSEM_XCHGADD_ALGORITHM
  65        bool
  66        default y
  67
  68config GENERIC_LOCKBREAK
  69        bool
  70        default y
  71        depends on SMP && PREEMPT
  72
  73config ARCH_HAS_ILOG2_U32
  74        bool
  75        default y
  76
  77config ARCH_HAS_ILOG2_U64
  78        bool
  79        default y if 64BIT
  80
  81config GENERIC_HWEIGHT
  82        bool
  83        default y
  84
  85config GENERIC_GPIO
  86        bool
  87        help
  88          Generic GPIO API support
  89
  90config ARCH_NO_VIRT_TO_BUS
  91        def_bool PPC64
  92
  93config PPC
  94        bool
  95        default y
  96        select OF
  97        select OF_EARLY_FLATTREE
  98        select HAVE_FTRACE_MCOUNT_RECORD
  99        select HAVE_DYNAMIC_FTRACE
 100        select HAVE_FUNCTION_TRACER
 101        select HAVE_FUNCTION_GRAPH_TRACER
 102        select ARCH_WANT_OPTIONAL_GPIOLIB
 103        select HAVE_IDE
 104        select HAVE_IOREMAP_PROT
 105        select HAVE_EFFICIENT_UNALIGNED_ACCESS
 106        select HAVE_KPROBES
 107        select HAVE_ARCH_KGDB
 108        select HAVE_KRETPROBES
 109        select HAVE_ARCH_TRACEHOOK
 110        select HAVE_MEMBLOCK
 111        select HAVE_MEMBLOCK_NODE_MAP
 112        select HAVE_DMA_ATTRS
 113        select HAVE_DMA_API_DEBUG
 114        select USE_GENERIC_SMP_HELPERS if SMP
 115        select HAVE_OPROFILE
 116        select HAVE_SYSCALL_WRAPPERS if PPC64
 117        select GENERIC_ATOMIC64 if PPC32
 118        select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 119        select HAVE_IRQ_WORK
 120        select HAVE_PERF_EVENTS
 121        select HAVE_REGS_AND_STACK_ACCESS_API
 122        select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 123        select HAVE_GENERIC_HARDIRQS
 124        select ARCH_WANT_IPC_PARSE_VERSION
 125        select SPARSE_IRQ
 126        select IRQ_PER_CPU
 127        select IRQ_DOMAIN
 128        select GENERIC_IRQ_SHOW
 129        select GENERIC_IRQ_SHOW_LEVEL
 130        select IRQ_FORCED_THREADING
 131        select HAVE_RCU_TABLE_FREE if SMP
 132        select HAVE_SYSCALL_TRACEPOINTS
 133        select HAVE_BPF_JIT if PPC64
 134        select HAVE_ARCH_JUMP_LABEL
 135        select ARCH_HAVE_NMI_SAFE_CMPXCHG
 136        select GENERIC_SMP_IDLE_THREAD
 137        select GENERIC_CMOS_UPDATE
 138        select GENERIC_TIME_VSYSCALL
 139        select GENERIC_CLOCKEVENTS
 140        select GENERIC_STRNCPY_FROM_USER
 141        select GENERIC_STRNLEN_USER
 142
 143config EARLY_PRINTK
 144        bool
 145        default y
 146
 147config COMPAT
 148        bool
 149        default y if PPC64
 150        select COMPAT_BINFMT_ELF
 151        select ARCH_WANT_OLD_COMPAT_IPC
 152
 153config SYSVIPC_COMPAT
 154        bool
 155        depends on COMPAT && SYSVIPC
 156        default y
 157
 158# All PPC32s use generic nvram driver through ppc_md
 159config GENERIC_NVRAM
 160        bool
 161        default y if PPC32
 162
 163config SCHED_OMIT_FRAME_POINTER
 164        bool
 165        default y
 166
 167config ARCH_MAY_HAVE_PC_FDC
 168        bool
 169        default !PPC_PSERIES || PCI
 170
 171config PPC_OF
 172        def_bool y
 173
 174config PPC_UDBG_16550
 175        bool
 176        default n
 177
 178config GENERIC_TBSYNC
 179        bool
 180        default y if PPC32 && SMP
 181        default n
 182
 183config AUDIT_ARCH
 184        bool
 185        default y
 186
 187config GENERIC_BUG
 188        bool
 189        default y
 190        depends on BUG
 191
 192config SYS_SUPPORTS_APM_EMULATION
 193        default y if PMAC_APM_EMU
 194        bool
 195
 196config EPAPR_BOOT
 197        bool
 198        help
 199          Used to allow a board to specify it wants an ePAPR compliant wrapper.
 200        default n
 201
 202config DEFAULT_UIMAGE
 203        bool
 204        help
 205          Used to allow a board to specify it wants a uImage built by default
 206        default n
 207
 208config REDBOOT
 209        bool
 210
 211config ARCH_HIBERNATION_POSSIBLE
 212        bool
 213        default y
 214
 215config ARCH_SUSPEND_POSSIBLE
 216        def_bool y
 217        depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 218                   (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
 219
 220config PPC_DCR_NATIVE
 221        bool
 222        default n
 223
 224config PPC_DCR_MMIO
 225        bool
 226        default n
 227
 228config PPC_DCR
 229        bool
 230        depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 231        default y
 232
 233config PPC_OF_PLATFORM_PCI
 234        bool
 235        depends on PCI
 236        depends on PPC64 # not supported on 32 bits yet
 237        default n
 238
 239config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 240        def_bool y
 241
 242config PPC_ADV_DEBUG_REGS
 243        bool
 244        depends on 40x || BOOKE
 245        default y
 246
 247config PPC_ADV_DEBUG_IACS
 248        int
 249        depends on PPC_ADV_DEBUG_REGS
 250        default 4 if 44x
 251        default 2
 252
 253config PPC_ADV_DEBUG_DACS
 254        int
 255        depends on PPC_ADV_DEBUG_REGS
 256        default 2
 257
 258config PPC_ADV_DEBUG_DVCS
 259        int
 260        depends on PPC_ADV_DEBUG_REGS
 261        default 2 if 44x
 262        default 0
 263
 264config PPC_ADV_DEBUG_DAC_RANGE
 265        bool
 266        depends on PPC_ADV_DEBUG_REGS && 44x
 267        default y
 268
 269source "init/Kconfig"
 270
 271source "kernel/Kconfig.freezer"
 272
 273source "arch/powerpc/sysdev/Kconfig"
 274source "arch/powerpc/platforms/Kconfig"
 275
 276menu "Kernel options"
 277
 278config HIGHMEM
 279        bool "High memory support"
 280        depends on PPC32
 281
 282source kernel/Kconfig.hz
 283source kernel/Kconfig.preempt
 284source "fs/Kconfig.binfmt"
 285
 286config HUGETLB_PAGE_SIZE_VARIABLE
 287        bool
 288        depends on HUGETLB_PAGE
 289        default y
 290
 291config MATH_EMULATION
 292        bool "Math emulation"
 293        depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 294        ---help---
 295          Some PowerPC chips designed for embedded applications do not have
 296          a floating-point unit and therefore do not implement the
 297          floating-point instructions in the PowerPC instruction set.  If you
 298          say Y here, the kernel will include code to emulate a floating-point
 299          unit, which will allow programs that use floating-point
 300          instructions to run.
 301
 302config 8XX_MINIMAL_FPEMU
 303        bool "Minimal math emulation for 8xx"
 304        depends on 8xx && !MATH_EMULATION
 305        help
 306          Older arch/ppc kernels still emulated a few floating point
 307          instructions such as load and store, even when full math
 308          emulation is disabled.  Say "Y" here if you want to preserve
 309          this behavior.
 310
 311          It is recommended that you build a soft-float userspace instead.
 312
 313config IOMMU_HELPER
 314        def_bool PPC64
 315
 316config SWIOTLB
 317        bool "SWIOTLB support"
 318        default n
 319        select IOMMU_HELPER
 320        ---help---
 321          Support for IO bounce buffering for systems without an IOMMU.
 322          This allows us to DMA to the full physical address space on
 323          platforms where the size of a physical address is larger
 324          than the bus address.  Not all platforms support this.
 325
 326config HOTPLUG_CPU
 327        bool "Support for enabling/disabling CPUs"
 328        depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
 329        ---help---
 330          Say Y here to be able to disable and re-enable individual
 331          CPUs at runtime on SMP machines.
 332
 333          Say N if you are unsure.
 334
 335config ARCH_CPU_PROBE_RELEASE
 336        def_bool y
 337        depends on HOTPLUG_CPU
 338
 339config ARCH_ENABLE_MEMORY_HOTPLUG
 340        def_bool y
 341
 342config ARCH_HAS_WALK_MEMORY
 343        def_bool y
 344
 345config ARCH_ENABLE_MEMORY_HOTREMOVE
 346        def_bool y
 347
 348config KEXEC
 349        bool "kexec system call (EXPERIMENTAL)"
 350        depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
 351        help
 352          kexec is a system call that implements the ability to shutdown your
 353          current kernel, and to start another kernel.  It is like a reboot
 354          but it is independent of the system firmware.   And like a reboot
 355          you can start any kernel with it, not just Linux.
 356
 357          The name comes from the similarity to the exec system call.
 358
 359          It is an ongoing process to be certain the hardware in a machine
 360          is properly shutdown, so do not be surprised if this code does not
 361          initially work for you.  It may help to enable device hotplugging
 362          support.  As of this writing the exact hardware interface is
 363          strongly in flux, so no good recommendation can be made.
 364
 365config CRASH_DUMP
 366        bool "Build a kdump crash kernel"
 367        depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 368        select RELOCATABLE if PPC64 || 44x
 369        select DYNAMIC_MEMSTART if FSL_BOOKE
 370        help
 371          Build a kernel suitable for use as a kdump capture kernel.
 372          The same kernel binary can be used as production kernel and dump
 373          capture kernel.
 374
 375config FA_DUMP
 376        bool "Firmware-assisted dump"
 377        depends on PPC64 && PPC_RTAS && CRASH_DUMP
 378        help
 379          A robust mechanism to get reliable kernel crash dump with
 380          assistance from firmware. This approach does not use kexec,
 381          instead firmware assists in booting the kdump kernel
 382          while preserving memory contents. Firmware-assisted dump
 383          is meant to be a kdump replacement offering robustness and
 384          speed not possible without system firmware assistance.
 385
 386          If unsure, say "N"
 387
 388config IRQ_ALL_CPUS
 389        bool "Distribute interrupts on all CPUs by default"
 390        depends on SMP && !MV64360
 391        help
 392          This option gives the kernel permission to distribute IRQs across
 393          multiple CPUs.  Saying N here will route all IRQs to the first
 394          CPU.  Generally saying Y is safe, although some problems have been
 395          reported with SMP Power Macintoshes with this option enabled.
 396
 397config NUMA
 398        bool "NUMA support"
 399        depends on PPC64
 400        default y if SMP && PPC_PSERIES
 401
 402config NODES_SHIFT
 403        int
 404        default "8" if PPC64
 405        default "4"
 406        depends on NEED_MULTIPLE_NODES
 407
 408config MAX_ACTIVE_REGIONS
 409        int
 410        default "256" if PPC64
 411        default "32"
 412
 413config ARCH_SELECT_MEMORY_MODEL
 414        def_bool y
 415        depends on PPC64
 416
 417config ARCH_FLATMEM_ENABLE
 418        def_bool y
 419        depends on (PPC64 && !NUMA) || PPC32
 420
 421config ARCH_SPARSEMEM_ENABLE
 422        def_bool y
 423        depends on PPC64
 424        select SPARSEMEM_VMEMMAP_ENABLE
 425
 426config ARCH_SPARSEMEM_DEFAULT
 427        def_bool y
 428        depends on (SMP && PPC_PSERIES) || PPC_PS3
 429
 430config SYS_SUPPORTS_HUGETLBFS
 431        bool
 432
 433source "mm/Kconfig"
 434
 435config ARCH_MEMORY_PROBE
 436        def_bool y
 437        depends on MEMORY_HOTPLUG
 438
 439# Some NUMA nodes have memory ranges that span
 440# other nodes.  Even though a pfn is valid and
 441# between a node's start and end pfns, it may not
 442# reside on that node.  See memmap_init_zone()
 443# for details.
 444config NODES_SPAN_OTHER_NODES
 445        def_bool y
 446        depends on NEED_MULTIPLE_NODES
 447
 448config PPC_HAS_HASH_64K
 449        bool
 450        depends on PPC64
 451        default n
 452
 453config STDBINUTILS
 454        bool "Using standard binutils settings"
 455        depends on 44x
 456        default y
 457        help
 458          Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 459          Note, that kernel will be able to run only those applications,
 460          which had been compiled using binutils later than 2.17.50.0.3 with
 461          '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 462          the older binutils, you can patch them with a trivial patch, which
 463          changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 464
 465choice
 466        prompt "Page size"
 467        default PPC_4K_PAGES
 468        help
 469          Select the kernel logical page size. Increasing the page size
 470          will reduce software overhead at each page boundary, allow
 471          hardware prefetch mechanisms to be more effective, and allow
 472          larger dma transfers increasing IO efficiency and reducing
 473          overhead. However the utilization of memory will increase.
 474          For example, each cached file will using a multiple of the
 475          page size to hold its contents and the difference between the
 476          end of file and the end of page is wasted.
 477
 478          Some dedicated systems, such as software raid serving with
 479          accelerated calculations, have shown significant increases.
 480
 481          If you configure a 64 bit kernel for 64k pages but the
 482          processor does not support them, then the kernel will simulate
 483          them with 4k pages, loading them on demand, but with the
 484          reduced software overhead and larger internal fragmentation.
 485          For the 32 bit kernel, a large page option will not be offered
 486          unless it is supported by the configured processor.
 487
 488          If unsure, choose 4K_PAGES.
 489
 490config PPC_4K_PAGES
 491        bool "4k page size"
 492
 493config PPC_16K_PAGES
 494        bool "16k page size" if 44x
 495
 496config PPC_64K_PAGES
 497        bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 498        select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 499
 500config PPC_256K_PAGES
 501        bool "256k page size" if 44x
 502        depends on !STDBINUTILS
 503        help
 504          Make the page size 256k.
 505
 506          As the ELF standard only requires alignment to support page
 507          sizes up to 64k, you will need to compile all of your user
 508          space applications with a non-standard binutils settings
 509          (see the STDBINUTILS description for details).
 510
 511          Say N unless you know what you are doing.
 512
 513endchoice
 514
 515config FORCE_MAX_ZONEORDER
 516        int "Maximum zone order"
 517        range 9 64 if PPC64 && PPC_64K_PAGES
 518        default "9" if PPC64 && PPC_64K_PAGES
 519        range 13 64 if PPC64 && !PPC_64K_PAGES
 520        default "13" if PPC64 && !PPC_64K_PAGES
 521        range 9 64 if PPC32 && PPC_16K_PAGES
 522        default "9" if PPC32 && PPC_16K_PAGES
 523        range 7 64 if PPC32 && PPC_64K_PAGES
 524        default "7" if PPC32 && PPC_64K_PAGES
 525        range 5 64 if PPC32 && PPC_256K_PAGES
 526        default "5" if PPC32 && PPC_256K_PAGES
 527        range 11 64
 528        default "11"
 529        help
 530          The kernel memory allocator divides physically contiguous memory
 531          blocks into "zones", where each zone is a power of two number of
 532          pages.  This option selects the largest power of two that the kernel
 533          keeps in the memory allocator.  If you need to allocate very large
 534          blocks of physically contiguous memory, then you may need to
 535          increase this value.
 536
 537          This config option is actually maximum order plus one. For example,
 538          a value of 11 means that the largest free memory block is 2^10 pages.
 539
 540          The page size is not necessarily 4KB.  For example, on 64-bit
 541          systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 542          this in mind when choosing a value for this option.
 543
 544config PPC_SUBPAGE_PROT
 545        bool "Support setting protections for 4k subpages"
 546        depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 547        help
 548          This option adds support for a system call to allow user programs
 549          to set access permissions (read/write, readonly, or no access)
 550          on the 4k subpages of each 64k page.
 551
 552config SCHED_SMT
 553        bool "SMT (Hyperthreading) scheduler support"
 554        depends on PPC64 && SMP
 555        help
 556          SMT scheduler support improves the CPU scheduler's decision making
 557          when dealing with POWER5 cpus at a cost of slightly increased
 558          overhead in some places. If unsure say N here.
 559
 560config CMDLINE_BOOL
 561        bool "Default bootloader kernel arguments"
 562
 563config CMDLINE
 564        string "Initial kernel command string"
 565        depends on CMDLINE_BOOL
 566        default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 567        help
 568          On some platforms, there is currently no way for the boot loader to
 569          pass arguments to the kernel. For these platforms, you can supply
 570          some command-line options at build time by entering them here.  In
 571          most cases you will need to specify the root device here.
 572
 573config EXTRA_TARGETS
 574        string "Additional default image types"
 575        help
 576          List additional targets to be built by the bootwrapper here (separated
 577          by spaces).  This is useful for targets that depend of device tree
 578          files in the .dts directory.
 579
 580          Targets in this list will be build as part of the default build
 581          target, or when the user does a 'make zImage' or a
 582          'make zImage.initrd'.
 583
 584          If unsure, leave blank
 585
 586config ARCH_WANTS_FREEZER_CONTROL
 587        def_bool y
 588        depends on ADB_PMU
 589
 590source kernel/power/Kconfig
 591
 592config SECCOMP
 593        bool "Enable seccomp to safely compute untrusted bytecode"
 594        depends on PROC_FS
 595        default y
 596        help
 597          This kernel feature is useful for number crunching applications
 598          that may need to compute untrusted bytecode during their
 599          execution. By using pipes or other transports made available to
 600          the process as file descriptors supporting the read/write
 601          syscalls, it's possible to isolate those applications in
 602          their own address space using seccomp. Once seccomp is
 603          enabled via /proc/<pid>/seccomp, it cannot be disabled
 604          and the task is only allowed to execute a few safe syscalls
 605          defined by each seccomp mode.
 606
 607          If unsure, say Y. Only embedded should say N here.
 608
 609endmenu
 610
 611config ISA_DMA_API
 612        bool
 613        default PCI
 614
 615menu "Bus options"
 616
 617config ISA
 618        bool "Support for ISA-bus hardware"
 619        depends on PPC_PREP || PPC_CHRP
 620        select PPC_I8259
 621        help
 622          Find out whether you have ISA slots on your motherboard.  ISA is the
 623          name of a bus system, i.e. the way the CPU talks to the other stuff
 624          inside your box.  If you have an Apple machine, say N here; if you
 625          have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 626          you have an embedded board, consult your board documentation.
 627
 628config ZONE_DMA
 629        bool
 630        default y
 631
 632config NEED_DMA_MAP_STATE
 633        def_bool (PPC64 || NOT_COHERENT_CACHE)
 634
 635config NEED_SG_DMA_LENGTH
 636        def_bool y
 637
 638config GENERIC_ISA_DMA
 639        bool
 640        depends on ISA_DMA_API
 641        default y
 642
 643config PPC_INDIRECT_PCI
 644        bool
 645        depends on PCI
 646        default y if 40x || 44x
 647        default n
 648
 649config EISA
 650        bool
 651
 652config SBUS
 653        bool
 654
 655config FSL_SOC
 656        bool
 657        select HAVE_CAN_FLEXCAN if NET && CAN
 658        select PPC_CLOCK
 659
 660config FSL_PCI
 661        bool
 662        select PPC_INDIRECT_PCI
 663        select PCI_QUIRKS
 664
 665config FSL_PMC
 666        bool
 667        default y
 668        depends on SUSPEND && (PPC_85xx || PPC_86xx)
 669        help
 670          Freescale MPC85xx/MPC86xx power management controller support
 671          (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 672
 673config PPC4xx_CPM
 674        bool
 675        default y
 676        depends on SUSPEND && (44x || 40x)
 677        help
 678          PPC4xx Clock Power Management (CPM) support (suspend/resume).
 679          It also enables support for two different idle states (idle-wait
 680          and idle-doze).
 681
 682config 4xx_SOC
 683        bool
 684
 685config FSL_LBC
 686        bool "Freescale Local Bus support"
 687        depends on FSL_SOC
 688        help
 689          Enables reporting of errors from the Freescale local bus
 690          controller.  Also contains some common code used by
 691          drivers for specific local bus peripherals.
 692
 693config FSL_IFC
 694        bool
 695        depends on FSL_SOC
 696
 697config FSL_GTM
 698        bool
 699        depends on PPC_83xx || QUICC_ENGINE || CPM2
 700        help
 701          Freescale General-purpose Timers support
 702
 703# Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 704config MCA
 705        bool
 706
 707# Platforms that what PCI turned unconditionally just do select PCI
 708# in their config node.  Platforms that want to choose at config
 709# time should select PPC_PCI_CHOICE
 710config PPC_PCI_CHOICE
 711        bool
 712
 713config PCI
 714        bool "PCI support" if PPC_PCI_CHOICE
 715        default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 716                && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 717        default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 718        default PCI_QSPAN if !4xx && !CPM2 && 8xx
 719        select ARCH_SUPPORTS_MSI
 720        select GENERIC_PCI_IOMAP
 721        help
 722          Find out whether your system includes a PCI bus. PCI is the name of
 723          a bus system, i.e. the way the CPU talks to the other stuff inside
 724          your box.  If you say Y here, the kernel will include drivers and
 725          infrastructure code to support PCI bus devices.
 726
 727config PCI_DOMAINS
 728        def_bool PCI
 729
 730config PCI_SYSCALL
 731        def_bool PCI
 732
 733config PCI_QSPAN
 734        bool "QSpan PCI"
 735        depends on !4xx && !CPM2 && 8xx
 736        select PPC_I8259
 737        help
 738          Say Y here if you have a system based on a Motorola 8xx-series
 739          embedded processor with a QSPAN PCI interface, otherwise say N.
 740
 741config PCI_8260
 742        bool
 743        depends on PCI && 8260
 744        select PPC_INDIRECT_PCI
 745        default y
 746
 747config 8260_PCI9
 748        bool "Enable workaround for MPC826x erratum PCI 9"
 749        depends on PCI_8260 && !8272
 750        default y
 751
 752source "drivers/pci/pcie/Kconfig"
 753
 754source "drivers/pci/Kconfig"
 755
 756source "drivers/pcmcia/Kconfig"
 757
 758source "drivers/pci/hotplug/Kconfig"
 759
 760config HAS_RAPIDIO
 761        bool
 762        default n
 763
 764config RAPIDIO
 765        bool "RapidIO support"
 766        depends on HAS_RAPIDIO || PCI
 767        help
 768          If you say Y here, the kernel will include drivers and
 769          infrastructure code to support RapidIO interconnect devices.
 770
 771config FSL_RIO
 772        bool "Freescale Embedded SRIO Controller support"
 773        depends on RAPIDIO && HAS_RAPIDIO
 774        default "n"
 775        ---help---
 776          Include support for RapidIO controller on Freescale embedded
 777          processors (MPC8548, MPC8641, etc).
 778
 779source "drivers/rapidio/Kconfig"
 780
 781endmenu
 782
 783config NONSTATIC_KERNEL
 784        bool
 785        default n
 786
 787menu "Advanced setup"
 788        depends on PPC32
 789
 790config ADVANCED_OPTIONS
 791        bool "Prompt for advanced kernel configuration options"
 792        help
 793          This option will enable prompting for a variety of advanced kernel
 794          configuration options.  These options can cause the kernel to not
 795          work if they are set incorrectly, but can be used to optimize certain
 796          aspects of kernel memory management.
 797
 798          Unless you know what you are doing, say N here.
 799
 800comment "Default settings for advanced configuration options are used"
 801        depends on !ADVANCED_OPTIONS
 802
 803config LOWMEM_SIZE_BOOL
 804        bool "Set maximum low memory"
 805        depends on ADVANCED_OPTIONS
 806        help
 807          This option allows you to set the maximum amount of memory which
 808          will be used as "low memory", that is, memory which the kernel can
 809          access directly, without having to set up a kernel virtual mapping.
 810          This can be useful in optimizing the layout of kernel virtual
 811          memory.
 812
 813          Say N here unless you know what you are doing.
 814
 815config LOWMEM_SIZE
 816        hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 817        default "0x30000000"
 818
 819config LOWMEM_CAM_NUM_BOOL
 820        bool "Set number of CAMs to use to map low memory"
 821        depends on ADVANCED_OPTIONS && FSL_BOOKE
 822        help
 823          This option allows you to set the maximum number of CAM slots that
 824          will be used to map low memory.  There are a limited number of slots
 825          available and even more limited number that will fit in the L1 MMU.
 826          However, using more entries will allow mapping more low memory.  This
 827          can be useful in optimizing the layout of kernel virtual memory.
 828
 829          Say N here unless you know what you are doing.
 830
 831config LOWMEM_CAM_NUM
 832        depends on FSL_BOOKE
 833        int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 834        default 3
 835
 836config DYNAMIC_MEMSTART
 837        bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 838        depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 839        select NONSTATIC_KERNEL
 840        help
 841          This option enables the kernel to be loaded at any page aligned
 842          physical address. The kernel creates a mapping from KERNELBASE to 
 843          the address where the kernel is loaded. The page size here implies
 844          the TLB page size of the mapping for kernel on the particular platform.
 845          Please refer to the init code for finding the TLB page size.
 846
 847          DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 848          kernel image, where the only restriction is the page aligned kernel
 849          load address. When this option is enabled, the compile time physical 
 850          address CONFIG_PHYSICAL_START is ignored.
 851
 852          This option is overridden by CONFIG_RELOCATABLE
 853
 854config RELOCATABLE
 855        bool "Build a relocatable kernel (EXPERIMENTAL)"
 856        depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
 857        select NONSTATIC_KERNEL
 858        help
 859          This builds a kernel image that is capable of running at the
 860          location the kernel is loaded at, without any alignment restrictions.
 861          This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 862
 863          One use is for the kexec on panic case where the recovery kernel
 864          must live at a different physical address than the primary
 865          kernel.
 866
 867          Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 868          it has been loaded at and the compile time physical addresses
 869          CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 870          setting can still be useful to bootwrappers that need to know the
 871          load address of the kernel (eg. u-boot/mkimage).
 872
 873config RELOCATABLE_PPC32
 874        def_bool y
 875        depends on PPC32 && RELOCATABLE
 876
 877config PAGE_OFFSET_BOOL
 878        bool "Set custom page offset address"
 879        depends on ADVANCED_OPTIONS
 880        help
 881          This option allows you to set the kernel virtual address at which
 882          the kernel will map low memory.  This can be useful in optimizing
 883          the virtual memory layout of the system.
 884
 885          Say N here unless you know what you are doing.
 886
 887config PAGE_OFFSET
 888        hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 889        default "0xc0000000"
 890
 891config KERNEL_START_BOOL
 892        bool "Set custom kernel base address"
 893        depends on ADVANCED_OPTIONS
 894        help
 895          This option allows you to set the kernel virtual address at which
 896          the kernel will be loaded.  Normally this should match PAGE_OFFSET
 897          however there are times (like kdump) that one might not want them
 898          to be the same.
 899
 900          Say N here unless you know what you are doing.
 901
 902config KERNEL_START
 903        hex "Virtual address of kernel base" if KERNEL_START_BOOL
 904        default PAGE_OFFSET if PAGE_OFFSET_BOOL
 905        default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 906        default "0xc0000000"
 907
 908config PHYSICAL_START_BOOL
 909        bool "Set physical address where the kernel is loaded"
 910        depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 911        help
 912          This gives the physical address where the kernel is loaded.
 913
 914          Say N here unless you know what you are doing.
 915
 916config PHYSICAL_START
 917        hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 918        default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 919        default "0x00000000"
 920
 921config PHYSICAL_ALIGN
 922        hex
 923        default "0x04000000" if FSL_BOOKE
 924        help
 925          This value puts the alignment restrictions on physical address
 926          where kernel is loaded and run from. Kernel is compiled for an
 927          address which meets above alignment restriction.
 928
 929config TASK_SIZE_BOOL
 930        bool "Set custom user task size"
 931        depends on ADVANCED_OPTIONS
 932        help
 933          This option allows you to set the amount of virtual address space
 934          allocated to user tasks.  This can be useful in optimizing the
 935          virtual memory layout of the system.
 936
 937          Say N here unless you know what you are doing.
 938
 939config TASK_SIZE
 940        hex "Size of user task space" if TASK_SIZE_BOOL
 941        default "0x80000000" if PPC_PREP || PPC_8xx
 942        default "0xc0000000"
 943
 944config CONSISTENT_SIZE_BOOL
 945        bool "Set custom consistent memory pool size"
 946        depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 947        help
 948          This option allows you to set the size of the
 949          consistent memory pool.  This pool of virtual memory
 950          is used to make consistent memory allocations.
 951
 952config CONSISTENT_SIZE
 953        hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 954        default "0x00200000" if NOT_COHERENT_CACHE
 955
 956config PIN_TLB
 957        bool "Pinned Kernel TLBs (860 ONLY)"
 958        depends on ADVANCED_OPTIONS && 8xx
 959endmenu
 960
 961if PPC64
 962config RELOCATABLE
 963        bool "Build a relocatable kernel"
 964        select NONSTATIC_KERNEL
 965        help
 966          This builds a kernel image that is capable of running anywhere
 967          in the RMA (real memory area) at any 16k-aligned base address.
 968          The kernel is linked as a position-independent executable (PIE)
 969          and contains dynamic relocations which are processed early
 970          in the bootup process.
 971
 972          One use is for the kexec on panic case where the recovery kernel
 973          must live at a different physical address than the primary
 974          kernel.
 975
 976config PAGE_OFFSET
 977        hex
 978        default "0xc000000000000000"
 979config KERNEL_START
 980        hex
 981        default "0xc000000000000000"
 982config PHYSICAL_START
 983        hex
 984        default "0x00000000"
 985endif
 986
 987source "net/Kconfig"
 988
 989source "drivers/Kconfig"
 990
 991source "fs/Kconfig"
 992
 993source "arch/powerpc/sysdev/qe_lib/Kconfig"
 994
 995source "lib/Kconfig"
 996
 997source "arch/powerpc/Kconfig.debug"
 998
 999source "security/Kconfig"
1000
1001config KEYS_COMPAT
1002        bool
1003        depends on COMPAT && KEYS
1004        default y
1005
1006source "crypto/Kconfig"
1007
1008config PPC_CLOCK
1009        bool
1010        default n
1011        select HAVE_CLK
1012
1013config PPC_LIB_RHEAP
1014        bool
1015
1016source "arch/powerpc/kvm/Kconfig"
1017
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