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 HAVE_SETUP_PER_CPU_AREA
  40         def_bool PPC64
  41
  42 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  43         def_bool PPC64
  44
  45 config NR_IRQS
  46         int "Number of virtual interrupt numbers"
  47         range 32 32768
  48         default "512"
  49         help
  50           This defines the number of virtual interrupt numbers the kernel
  51           can manage. Virtual interrupt numbers are what you see in
  52           /proc/interrupts. If you configure your system to have too few,
  53           drivers will fail to load or worse - handle with care.
  54
  55 config STACKTRACE_SUPPORT
  56         bool
  57         default y
  58
  59 config HAVE_LATENCYTOP_SUPPORT
  60         def_bool y
  61
  62 config TRACE_IRQFLAGS_SUPPORT
  63         bool
  64         default y
  65
  66 config LOCKDEP_SUPPORT
  67         bool
  68         default y
  69
  70 config RWSEM_GENERIC_SPINLOCK
  71         bool
  72
  73 config RWSEM_XCHGADD_ALGORITHM
  74         bool
  75         default y
  76
  77 config GENERIC_LOCKBREAK
  78         bool
  79         default y
  80         depends on SMP && PREEMPT
  81
  82 config ARCH_HAS_ILOG2_U32
  83         bool
  84         default y
  85
  86 config ARCH_HAS_ILOG2_U64
  87         bool
  88         default y if 64BIT
  89
  90 config ARCH_HAS_CPU_IDLE_WAIT
  91         bool
  92         default y
  93
  94 config GENERIC_HWEIGHT
  95         bool
  96         default y
  97
  98 config GENERIC_GPIO
  99         bool
 100         help
 101           Generic GPIO API support
 102
 103 config ARCH_NO_VIRT_TO_BUS
 104         def_bool PPC64
 105
 106 config PPC
 107         bool
 108         default y
 109         select OF
 110         select OF_EARLY_FLATTREE
 111         select HAVE_FTRACE_MCOUNT_RECORD
 112         select HAVE_DYNAMIC_FTRACE
 113         select HAVE_FUNCTION_TRACER
 114         select HAVE_FUNCTION_GRAPH_TRACER
 115         select ARCH_WANT_OPTIONAL_GPIOLIB
 116         select HAVE_IDE
 117         select HAVE_IOREMAP_PROT
 118         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 119         select HAVE_KPROBES
 120         select HAVE_ARCH_KGDB
 121         select HAVE_KRETPROBES
 122         select HAVE_ARCH_TRACEHOOK
 123         select HAVE_MEMBLOCK
 124         select HAVE_DMA_ATTRS
 125         select HAVE_DMA_API_DEBUG
 126         select USE_GENERIC_SMP_HELPERS if SMP
 127         select HAVE_OPROFILE
 128         select HAVE_SYSCALL_WRAPPERS if PPC64
 129         select GENERIC_ATOMIC64 if PPC32
 130         select HAVE_IRQ_WORK
 131         select HAVE_PERF_EVENTS
 132         select HAVE_REGS_AND_STACK_ACCESS_API
 133         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 134         select HAVE_GENERIC_HARDIRQS
 135         select HAVE_SPARSE_IRQ
 136         select IRQ_PER_CPU
 137         select GENERIC_IRQ_SHOW
 138         select GENERIC_IRQ_SHOW_LEVEL
 139         select IRQ_FORCED_THREADING
 140         select HAVE_RCU_TABLE_FREE if SMP
 141         select HAVE_SYSCALL_TRACEPOINTS
 142         select HAVE_BPF_JIT if (PPC64 && NET)
 143         select HAVE_ARCH_JUMP_LABEL
 144         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 145
 146 config EARLY_PRINTK
 147         bool
 148         default y
 149
 150 config COMPAT
 151         bool
 152         default y if PPC64
 153         select COMPAT_BINFMT_ELF
 154
 155 config SYSVIPC_COMPAT
 156         bool
 157         depends on COMPAT && SYSVIPC
 158         default y
 159
 160 # All PPC32s use generic nvram driver through ppc_md
 161 config GENERIC_NVRAM
 162         bool
 163         default y if PPC32
 164
 165 config SCHED_OMIT_FRAME_POINTER
 166         bool
 167         default y
 168
 169 config ARCH_MAY_HAVE_PC_FDC
 170         bool
 171         default !PPC_PSERIES || PCI
 172
 173 config PPC_OF
 174         def_bool y
 175
 176 config PPC_UDBG_16550
 177         bool
 178         default n
 179
 180 config GENERIC_TBSYNC
 181         bool
 182         default y if PPC32 && SMP
 183         default n
 184
 185 config AUDIT_ARCH
 186         bool
 187         default y
 188
 189 config GENERIC_BUG
 190         bool
 191         default y
 192         depends on BUG
 193
 194 config SYS_SUPPORTS_APM_EMULATION
 195         default y if PMAC_APM_EMU
 196         bool
 197
 198 config EPAPR_BOOT
 199         bool
 200         help
 201           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 202         default n
 203
 204 config DEFAULT_UIMAGE
 205         bool
 206         help
 207           Used to allow a board to specify it wants a uImage built by default
 208         default n
 209
 210 config REDBOOT
 211         bool
 212
 213 config ARCH_HIBERNATION_POSSIBLE
 214         bool
 215         default y
 216
 217 config ARCH_SUSPEND_POSSIBLE
 218         def_bool y
 219         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 220                    (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
 221
 222 config PPC_DCR_NATIVE
 223         bool
 224         default n
 225
 226 config PPC_DCR_MMIO
 227         bool
 228         default n
 229
 230 config PPC_DCR
 231         bool
 232         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 233         default y
 234
 235 config PPC_OF_PLATFORM_PCI
 236         bool
 237         depends on PCI
 238         depends on PPC64 # not supported on 32 bits yet
 239         default n
 240
 241 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 242         def_bool y
 243
 244 config PPC_ADV_DEBUG_REGS
 245         bool
 246         depends on 40x || BOOKE
 247         default y
 248
 249 config PPC_ADV_DEBUG_IACS
 250         int
 251         depends on PPC_ADV_DEBUG_REGS
 252         default 4 if 44x
 253         default 2
 254
 255 config PPC_ADV_DEBUG_DACS
 256         int
 257         depends on PPC_ADV_DEBUG_REGS
 258         default 2
 259
 260 config PPC_ADV_DEBUG_DVCS
 261         int
 262         depends on PPC_ADV_DEBUG_REGS
 263         default 2 if 44x
 264         default 0
 265
 266 config PPC_ADV_DEBUG_DAC_RANGE
 267         bool
 268         depends on PPC_ADV_DEBUG_REGS && 44x
 269         default y
 270
 271 source "init/Kconfig"
 272
 273 source "kernel/Kconfig.freezer"
 274
 275 source "arch/powerpc/sysdev/Kconfig"
 276 source "arch/powerpc/platforms/Kconfig"
 277
 278 menu "Kernel options"
 279
 280 config HIGHMEM
 281         bool "High memory support"
 282         depends on PPC32
 283
 284 source kernel/time/Kconfig
 285 source kernel/Kconfig.hz
 286 source kernel/Kconfig.preempt
 287 source "fs/Kconfig.binfmt"
 288
 289 config HUGETLB_PAGE_SIZE_VARIABLE
 290         bool
 291         depends on HUGETLB_PAGE
 292         default y
 293
 294 config MATH_EMULATION
 295         bool "Math emulation"
 296         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 297         ---help---
 298           Some PowerPC chips designed for embedded applications do not have
 299           a floating-point unit and therefore do not implement the
 300           floating-point instructions in the PowerPC instruction set.  If you
 301           say Y here, the kernel will include code to emulate a floating-point
 302           unit, which will allow programs that use floating-point
 303           instructions to run.
 304
 305 config 8XX_MINIMAL_FPEMU
 306         bool "Minimal math emulation for 8xx"
 307         depends on 8xx && !MATH_EMULATION
 308         help
 309           Older arch/ppc kernels still emulated a few floating point
 310           instructions such as load and store, even when full math
 311           emulation is disabled.  Say "Y" here if you want to preserve
 312           this behavior.
 313
 314           It is recommended that you build a soft-float userspace instead.
 315
 316 config IOMMU_HELPER
 317         def_bool PPC64
 318
 319 config SWIOTLB
 320         bool "SWIOTLB support"
 321         default n
 322         select IOMMU_HELPER
 323         ---help---
 324           Support for IO bounce buffering for systems without an IOMMU.
 325           This allows us to DMA to the full physical address space on
 326           platforms where the size of a physical address is larger
 327           than the bus address.  Not all platforms support this.
 328
 329 config HOTPLUG_CPU
 330         bool "Support for enabling/disabling CPUs"
 331         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
 332         ---help---
 333           Say Y here to be able to disable and re-enable individual
 334           CPUs at runtime on SMP machines.
 335
 336           Say N if you are unsure.
 337
 338 config ARCH_CPU_PROBE_RELEASE
 339         def_bool y
 340         depends on HOTPLUG_CPU
 341
 342 config ARCH_ENABLE_MEMORY_HOTPLUG
 343         def_bool y
 344
 345 config ARCH_HAS_WALK_MEMORY
 346         def_bool y
 347
 348 config ARCH_ENABLE_MEMORY_HOTREMOVE
 349         def_bool y
 350
 351 config KEXEC
 352         bool "kexec system call (EXPERIMENTAL)"
 353         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL
 354         help
 355           kexec is a system call that implements the ability to shutdown your
 356           current kernel, and to start another kernel.  It is like a reboot
 357           but it is independent of the system firmware.   And like a reboot
 358           you can start any kernel with it, not just Linux.
 359
 360           The name comes from the similarity to the exec system call.
 361
 362           It is an ongoing process to be certain the hardware in a machine
 363           is properly shutdown, so do not be surprised if this code does not
 364           initially work for you.  It may help to enable device hotplugging
 365           support.  As of this writing the exact hardware interface is
 366           strongly in flux, so no good recommendation can be made.
 367
 368 config CRASH_DUMP
 369         bool "Build a kdump crash kernel"
 370         depends on PPC64 || 6xx || FSL_BOOKE
 371         select RELOCATABLE if PPC64
 372         select DYNAMIC_MEMSTART if FSL_BOOKE
 373         help
 374           Build a kernel suitable for use as a kdump capture kernel.
 375           The same kernel binary can be used as production kernel and dump
 376           capture kernel.
 377
 378 config PHYP_DUMP
 379         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 380         depends on PPC_PSERIES && EXPERIMENTAL
 381         help
 382           Hypervisor-assisted dump is meant to be a kdump replacement
 383           offering robustness and speed not possible without system
 384           hypervisor assistance.
 385
 386           If unsure, say "N"
 387
 388 config 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
 397 config NUMA
 398         bool "NUMA support"
 399         depends on PPC64
 400         default y if SMP && PPC_PSERIES
 401
 402 config NODES_SHIFT
 403         int
 404         default "8" if PPC64
 405         default "4"
 406         depends on NEED_MULTIPLE_NODES
 407
 408 config MAX_ACTIVE_REGIONS
 409         int
 410         default "256" if PPC64
 411         default "32"
 412
 413 config ARCH_SELECT_MEMORY_MODEL
 414         def_bool y
 415         depends on PPC64
 416
 417 config ARCH_FLATMEM_ENABLE
 418         def_bool y
 419         depends on (PPC64 && !NUMA) || PPC32
 420
 421 config ARCH_SPARSEMEM_ENABLE
 422         def_bool y
 423         depends on PPC64
 424         select SPARSEMEM_VMEMMAP_ENABLE
 425
 426 config ARCH_SPARSEMEM_DEFAULT
 427         def_bool y
 428         depends on (SMP && PPC_PSERIES) || PPC_PS3
 429
 430 config ARCH_POPULATES_NODE_MAP
 431         def_bool y
 432
 433 config SYS_SUPPORTS_HUGETLBFS
 434         bool
 435
 436 source "mm/Kconfig"
 437
 438 config ARCH_MEMORY_PROBE
 439         def_bool y
 440         depends on MEMORY_HOTPLUG
 441
 442 # Some NUMA nodes have memory ranges that span
 443 # other nodes.  Even though a pfn is valid and
 444 # between a node's start and end pfns, it may not
 445 # reside on that node.  See memmap_init_zone()
 446 # for details.
 447 config NODES_SPAN_OTHER_NODES
 448         def_bool y
 449         depends on NEED_MULTIPLE_NODES
 450
 451 config PPC_HAS_HASH_64K
 452         bool
 453         depends on PPC64
 454         default n
 455
 456 config STDBINUTILS
 457         bool "Using standard binutils settings"
 458         depends on 44x
 459         default y
 460         help
 461           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 462           Note, that kernel will be able to run only those applications,
 463           which had been compiled using binutils later than 2.17.50.0.3 with
 464           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 465           the older binutils, you can patch them with a trivial patch, which
 466           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 467
 468 choice
 469         prompt "Page size"
 470         default PPC_4K_PAGES
 471         help
 472           Select the kernel logical page size. Increasing the page size
 473           will reduce software overhead at each page boundary, allow
 474           hardware prefetch mechanisms to be more effective, and allow
 475           larger dma transfers increasing IO efficiency and reducing
 476           overhead. However the utilization of memory will increase.
 477           For example, each cached file will using a multiple of the
 478           page size to hold its contents and the difference between the
 479           end of file and the end of page is wasted.
 480
 481           Some dedicated systems, such as software raid serving with
 482           accelerated calculations, have shown significant increases.
 483
 484           If you configure a 64 bit kernel for 64k pages but the
 485           processor does not support them, then the kernel will simulate
 486           them with 4k pages, loading them on demand, but with the
 487           reduced software overhead and larger internal fragmentation.
 488           For the 32 bit kernel, a large page option will not be offered
 489           unless it is supported by the configured processor.
 490
 491           If unsure, choose 4K_PAGES.
 492
 493 config PPC_4K_PAGES
 494         bool "4k page size"
 495
 496 config PPC_16K_PAGES
 497         bool "16k page size" if 44x
 498
 499 config PPC_64K_PAGES
 500         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 501         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 502
 503 config PPC_256K_PAGES
 504         bool "256k page size" if 44x
 505         depends on !STDBINUTILS
 506         help
 507           Make the page size 256k.
 508
 509           As the ELF standard only requires alignment to support page
 510           sizes up to 64k, you will need to compile all of your user
 511           space applications with a non-standard binutils settings
 512           (see the STDBINUTILS description for details).
 513
 514           Say N unless you know what you are doing.
 515
 516 endchoice
 517
 518 config FORCE_MAX_ZONEORDER
 519         int "Maximum zone order"
 520         range 9 64 if PPC64 && PPC_64K_PAGES
 521         default "9" if PPC64 && PPC_64K_PAGES
 522         range 13 64 if PPC64 && !PPC_64K_PAGES
 523         default "13" if PPC64 && !PPC_64K_PAGES
 524         range 9 64 if PPC32 && PPC_16K_PAGES
 525         default "9" if PPC32 && PPC_16K_PAGES
 526         range 7 64 if PPC32 && PPC_64K_PAGES
 527         default "7" if PPC32 && PPC_64K_PAGES
 528         range 5 64 if PPC32 && PPC_256K_PAGES
 529         default "5" if PPC32 && PPC_256K_PAGES
 530         range 11 64
 531         default "11"
 532         help
 533           The kernel memory allocator divides physically contiguous memory
 534           blocks into "zones", where each zone is a power of two number of
 535           pages.  This option selects the largest power of two that the kernel
 536           keeps in the memory allocator.  If you need to allocate very large
 537           blocks of physically contiguous memory, then you may need to
 538           increase this value.
 539
 540           This config option is actually maximum order plus one. For example,
 541           a value of 11 means that the largest free memory block is 2^10 pages.
 542
 543           The page size is not necessarily 4KB.  For example, on 64-bit
 544           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 545           this in mind when choosing a value for this option.
 546
 547 config PPC_SUBPAGE_PROT
 548         bool "Support setting protections for 4k subpages"
 549         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 550         help
 551           This option adds support for a system call to allow user programs
 552           to set access permissions (read/write, readonly, or no access)
 553           on the 4k subpages of each 64k page.
 554
 555 config SCHED_SMT
 556         bool "SMT (Hyperthreading) scheduler support"
 557         depends on PPC64 && SMP
 558         help
 559           SMT scheduler support improves the CPU scheduler's decision making
 560           when dealing with POWER5 cpus at a cost of slightly increased
 561           overhead in some places. If unsure say N here.
 562
 563 config CMDLINE_BOOL
 564         bool "Default bootloader kernel arguments"
 565
 566 config CMDLINE
 567         string "Initial kernel command string"
 568         depends on CMDLINE_BOOL
 569         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 570         help
 571           On some platforms, there is currently no way for the boot loader to
 572           pass arguments to the kernel. For these platforms, you can supply
 573           some command-line options at build time by entering them here.  In
 574           most cases you will need to specify the root device here.
 575
 576 config EXTRA_TARGETS
 577         string "Additional default image types"
 578         help
 579           List additional targets to be built by the bootwrapper here (separated
 580           by spaces).  This is useful for targets that depend of device tree
 581           files in the .dts directory.
 582
 583           Targets in this list will be build as part of the default build
 584           target, or when the user does a 'make zImage' or a
 585           'make zImage.initrd'.
 586
 587           If unsure, leave blank
 588
 589 config ARCH_WANTS_FREEZER_CONTROL
 590         def_bool y
 591         depends on ADB_PMU
 592
 593 source kernel/power/Kconfig
 594
 595 config SECCOMP
 596         bool "Enable seccomp to safely compute untrusted bytecode"
 597         depends on PROC_FS
 598         default y
 599         help
 600           This kernel feature is useful for number crunching applications
 601           that may need to compute untrusted bytecode during their
 602           execution. By using pipes or other transports made available to
 603           the process as file descriptors supporting the read/write
 604           syscalls, it's possible to isolate those applications in
 605           their own address space using seccomp. Once seccomp is
 606           enabled via /proc/<pid>/seccomp, it cannot be disabled
 607           and the task is only allowed to execute a few safe syscalls
 608           defined by each seccomp mode.
 609
 610           If unsure, say Y. Only embedded should say N here.
 611
 612 endmenu
 613
 614 config ISA_DMA_API
 615         bool
 616         default !PPC_ISERIES || PCI
 617
 618 menu "Bus options"
 619
 620 config ISA
 621         bool "Support for ISA-bus hardware"
 622         depends on PPC_PREP || PPC_CHRP
 623         select PPC_I8259
 624         help
 625           Find out whether you have ISA slots on your motherboard.  ISA is the
 626           name of a bus system, i.e. the way the CPU talks to the other stuff
 627           inside your box.  If you have an Apple machine, say N here; if you
 628           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 629           you have an embedded board, consult your board documentation.
 630
 631 config ZONE_DMA
 632         bool
 633         default y
 634
 635 config NEED_DMA_MAP_STATE
 636         def_bool (PPC64 || NOT_COHERENT_CACHE)
 637
 638 config NEED_SG_DMA_LENGTH
 639         def_bool y
 640
 641 config GENERIC_ISA_DMA
 642         bool
 643         depends on ISA_DMA_API
 644         default y
 645
 646 config PPC_INDIRECT_PCI
 647         bool
 648         depends on PCI
 649         default y if 40x || 44x
 650         default n
 651
 652 config EISA
 653         bool
 654
 655 config SBUS
 656         bool
 657
 658 config FSL_SOC
 659         bool
 660         select HAVE_CAN_FLEXCAN if NET && CAN
 661         select PPC_CLOCK if CAN_FLEXCAN
 662
 663 config FSL_PCI
 664         bool
 665         select PPC_INDIRECT_PCI
 666         select PCI_QUIRKS
 667
 668 config FSL_PMC
 669         bool
 670         default y
 671         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 672         help
 673           Freescale MPC85xx/MPC86xx power management controller support
 674           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 675
 676 config PPC4xx_CPM
 677         bool
 678         default y
 679         depends on SUSPEND && (44x || 40x)
 680         help
 681           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 682           It also enables support for two different idle states (idle-wait
 683           and idle-doze).
 684
 685 config 4xx_SOC
 686         bool
 687
 688 config FSL_LBC
 689         bool "Freescale Local Bus support"
 690         depends on FSL_SOC
 691         help
 692           Enables reporting of errors from the Freescale local bus
 693           controller.  Also contains some common code used by
 694           drivers for specific local bus peripherals.
 695
 696 config FSL_GTM
 697         bool
 698         depends on PPC_83xx || QUICC_ENGINE || CPM2
 699         help
 700           Freescale General-purpose Timers support
 701
 702 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 703 config MCA
 704         bool
 705
 706 # Platforms that what PCI turned unconditionally just do select PCI
 707 # in their config node.  Platforms that want to choose at config
 708 # time should select PPC_PCI_CHOICE
 709 config PPC_PCI_CHOICE
 710         bool
 711
 712 config PCI
 713         bool "PCI support" if PPC_PCI_CHOICE
 714         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 715                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 716         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 717         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 718         select ARCH_SUPPORTS_MSI
 719         help
 720           Find out whether your system includes a PCI bus. PCI is the name of
 721           a bus system, i.e. the way the CPU talks to the other stuff inside
 722           your box.  If you say Y here, the kernel will include drivers and
 723           infrastructure code to support PCI bus devices.
 724
 725 config PCI_DOMAINS
 726         def_bool PCI
 727
 728 config PCI_SYSCALL
 729         def_bool PCI
 730
 731 config PCI_QSPAN
 732         bool "QSpan PCI"
 733         depends on !4xx && !CPM2 && 8xx
 734         select PPC_I8259
 735         help
 736           Say Y here if you have a system based on a Motorola 8xx-series
 737           embedded processor with a QSPAN PCI interface, otherwise say N.
 738
 739 config PCI_8260
 740         bool
 741         depends on PCI && 8260
 742         select PPC_INDIRECT_PCI
 743         default y
 744
 745 config 8260_PCI9
 746         bool "Enable workaround for MPC826x erratum PCI 9"
 747         depends on PCI_8260 && !8272
 748         default y
 749
 750 source "drivers/pci/pcie/Kconfig"
 751
 752 source "drivers/pci/Kconfig"
 753
 754 source "drivers/pcmcia/Kconfig"
 755
 756 source "drivers/pci/hotplug/Kconfig"
 757
 758 config HAS_RAPIDIO
 759         bool
 760         default n
 761
 762 config RAPIDIO
 763         bool "RapidIO support"
 764         depends on HAS_RAPIDIO || PCI
 765         help
 766           If you say Y here, the kernel will include drivers and
 767           infrastructure code to support RapidIO interconnect devices.
 768
 769 config FSL_RIO
 770         bool "Freescale Embedded SRIO Controller support"
 771         depends on RAPIDIO && HAS_RAPIDIO
 772         default "n"
 773         ---help---
 774           Include support for RapidIO controller on Freescale embedded
 775           processors (MPC8548, MPC8641, etc).
 776
 777 source "drivers/rapidio/Kconfig"
 778
 779 endmenu
 780
 781 config NONSTATIC_KERNEL
 782         bool
 783         default n
 784
 785 menu "Advanced setup"
 786         depends on PPC32
 787
 788 config ADVANCED_OPTIONS
 789         bool "Prompt for advanced kernel configuration options"
 790         help
 791           This option will enable prompting for a variety of advanced kernel
 792           configuration options.  These options can cause the kernel to not
 793           work if they are set incorrectly, but can be used to optimize certain
 794           aspects of kernel memory management.
 795
 796           Unless you know what you are doing, say N here.
 797
 798 comment "Default settings for advanced configuration options are used"
 799         depends on !ADVANCED_OPTIONS
 800
 801 config LOWMEM_SIZE_BOOL
 802         bool "Set maximum low memory"
 803         depends on ADVANCED_OPTIONS
 804         help
 805           This option allows you to set the maximum amount of memory which
 806           will be used as "low memory", that is, memory which the kernel can
 807           access directly, without having to set up a kernel virtual mapping.
 808           This can be useful in optimizing the layout of kernel virtual
 809           memory.
 810
 811           Say N here unless you know what you are doing.
 812
 813 config LOWMEM_SIZE
 814         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 815         default "0x30000000"
 816
 817 config LOWMEM_CAM_NUM_BOOL
 818         bool "Set number of CAMs to use to map low memory"
 819         depends on ADVANCED_OPTIONS && FSL_BOOKE
 820         help
 821           This option allows you to set the maximum number of CAM slots that
 822           will be used to map low memory.  There are a limited number of slots
 823           available and even more limited number that will fit in the L1 MMU.
 824           However, using more entries will allow mapping more low memory.  This
 825           can be useful in optimizing the layout of kernel virtual memory.
 826
 827           Say N here unless you know what you are doing.
 828
 829 config LOWMEM_CAM_NUM
 830         depends on FSL_BOOKE
 831         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 832         default 3
 833
 834 config DYNAMIC_MEMSTART
 835         bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 836         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 837         select NONSTATIC_KERNEL
 838         help
 839           This option enables the kernel to be loaded at any page aligned
 840           physical address. The kernel creates a mapping from KERNELBASE to
 841           the address where the kernel is loaded. The page size here implies
 842           the TLB page size of the mapping for kernel on the particular platform.
 843           Please refer to the init code for finding the TLB page size.
 844
 845           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 846           kernel image, where the only restriction is the page aligned kernel
 847           load address. When this option is enabled, the compile time physical
 848           address CONFIG_PHYSICAL_START is ignored.
 849
 850           This option is overridden by CONFIG_RELOCATABLE
 851
 852 config RELOCATABLE
 853         bool "Build a relocatable kernel (EXPERIMENTAL)"
 854         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM
 855         select NONSTATIC_KERNEL
 856         help
 857           This builds a kernel image that is capable of running at the
 858           location the kernel is loaded at, without any alignment restrictions.
 859           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 860
 861           One use is for the kexec on panic case where the recovery kernel
 862           must live at a different physical address than the primary
 863           kernel.
 864
 865           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 866           it has been loaded at and the compile time physical addresses
 867           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 868           setting can still be useful to bootwrappers that need to know the
 869           load address of the kernel (eg. u-boot/mkimage).
 870
 871 config RELOCATABLE_PPC32
 872         def_bool y
 873         depends on PPC32 && RELOCATABLE
 874
 875 config PAGE_OFFSET_BOOL
 876         bool "Set custom page offset 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 map low memory.  This can be useful in optimizing
 881           the virtual memory layout of the system.
 882
 883           Say N here unless you know what you are doing.
 884
 885 config PAGE_OFFSET
 886         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 887         default "0xc0000000"
 888
 889 config KERNEL_START_BOOL
 890         bool "Set custom kernel base address"
 891         depends on ADVANCED_OPTIONS
 892         help
 893           This option allows you to set the kernel virtual address at which
 894           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 895           however there are times (like kdump) that one might not want them
 896           to be the same.
 897
 898           Say N here unless you know what you are doing.
 899
 900 config KERNEL_START
 901         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 902         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 903         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 904         default "0xc0000000"
 905
 906 config PHYSICAL_START_BOOL
 907         bool "Set physical address where the kernel is loaded"
 908         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 909         help
 910           This gives the physical address where the kernel is loaded.
 911
 912           Say N here unless you know what you are doing.
 913
 914 config PHYSICAL_START
 915         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 916         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 917         default "0x00000000"
 918
 919 config PHYSICAL_ALIGN
 920         hex
 921         default "0x04000000" if FSL_BOOKE
 922         help
 923           This value puts the alignment restrictions on physical address
 924           where kernel is loaded and run from. Kernel is compiled for an
 925           address which meets above alignment restriction.
 926
 927 config TASK_SIZE_BOOL
 928         bool "Set custom user task size"
 929         depends on ADVANCED_OPTIONS
 930         help
 931           This option allows you to set the amount of virtual address space
 932           allocated to user tasks.  This can be useful in optimizing the
 933           virtual memory layout of the system.
 934
 935           Say N here unless you know what you are doing.
 936
 937 config TASK_SIZE
 938         hex "Size of user task space" if TASK_SIZE_BOOL
 939         default "0x80000000" if PPC_PREP || PPC_8xx
 940         default "0xc0000000"
 941
 942 config CONSISTENT_SIZE_BOOL
 943         bool "Set custom consistent memory pool size"
 944         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 945         help
 946           This option allows you to set the size of the
 947           consistent memory pool.  This pool of virtual memory
 948           is used to make consistent memory allocations.
 949
 950 config CONSISTENT_SIZE
 951         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 952         default "0x00200000" if NOT_COHERENT_CACHE
 953
 954 config PIN_TLB
 955         bool "Pinned Kernel TLBs (860 ONLY)"
 956         depends on ADVANCED_OPTIONS && 8xx
 957 endmenu
 958
 959 if PPC64
 960 config RELOCATABLE
 961         bool "Build a relocatable kernel"
 962         select NONSTATIC_KERNEL
 963         help
 964           This builds a kernel image that is capable of running anywhere
 965           in the RMA (real memory area) at any 16k-aligned base address.
 966           The kernel is linked as a position-independent executable (PIE)
 967           and contains dynamic relocations which are processed early
 968           in the bootup process.
 969
 970           One use is for the kexec on panic case where the recovery kernel
 971           must live at a different physical address than the primary
 972           kernel.
 973
 974 config PAGE_OFFSET
 975         hex
 976         default "0xc000000000000000"
 977 config KERNEL_START
 978         hex
 979         default "0xc000000000000000"
 980 config PHYSICAL_START
 981         hex
 982         default "0x00000000"
 983 endif
 984
 985 source "net/Kconfig"
 986
 987 source "drivers/Kconfig"
 988
 989 source "fs/Kconfig"
 990
 991 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 992
 993 source "lib/Kconfig"
 994
 995 source "arch/powerpc/Kconfig.debug"
 996
 997 source "security/Kconfig"
 998
 999 config KEYS_COMPAT
1000         bool
1001         depends on COMPAT && KEYS
1002         default y
1003
1004 source "crypto/Kconfig"
1005
1006 config PPC_CLOCK
1007         bool
1008         default n
1009         select HAVE_CLK
1010
1011 config PPC_LIB_RHEAP
1012         bool
1013
1014 source "arch/powerpc/kvm/Kconfig"