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 HAVE_SETUP_PER_CPU_AREA
  31         def_bool PPC64
  32
  33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  34         def_bool PPC64
  35
  36 config 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
  46 config STACKTRACE_SUPPORT
  47         bool
  48         default y
  49
  50 config HAVE_LATENCYTOP_SUPPORT
  51         def_bool y
  52
  53 config TRACE_IRQFLAGS_SUPPORT
  54         bool
  55         default y
  56
  57 config LOCKDEP_SUPPORT
  58         bool
  59         default y
  60
  61 config RWSEM_GENERIC_SPINLOCK
  62         bool
  63
  64 config RWSEM_XCHGADD_ALGORITHM
  65         bool
  66         default y
  67
  68 config GENERIC_LOCKBREAK
  69         bool
  70         default y
  71         depends on SMP && PREEMPT
  72
  73 config ARCH_HAS_ILOG2_U32
  74         bool
  75         default y
  76
  77 config ARCH_HAS_ILOG2_U64
  78         bool
  79         default y if 64BIT
  80
  81 config GENERIC_HWEIGHT
  82         bool
  83         default y
  84
  85 config GENERIC_GPIO
  86         bool
  87         help
  88           Generic GPIO API support
  89
  90 config ARCH_NO_VIRT_TO_BUS
  91         def_bool PPC64
  92
  93 config 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 HAVE_IRQ_WORK
 119         select HAVE_PERF_EVENTS
 120         select HAVE_REGS_AND_STACK_ACCESS_API
 121         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 122         select HAVE_GENERIC_HARDIRQS
 123         select SPARSE_IRQ
 124         select IRQ_PER_CPU
 125         select IRQ_DOMAIN
 126         select GENERIC_IRQ_SHOW
 127         select GENERIC_IRQ_SHOW_LEVEL
 128         select IRQ_FORCED_THREADING
 129         select HAVE_RCU_TABLE_FREE if SMP
 130         select HAVE_SYSCALL_TRACEPOINTS
 131         select HAVE_BPF_JIT if PPC64
 132         select HAVE_ARCH_JUMP_LABEL
 133         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 134         select GENERIC_SMP_IDLE_THREAD
 135         select GENERIC_CMOS_UPDATE
 136         select GENERIC_TIME_VSYSCALL
 137         select GENERIC_CLOCKEVENTS
 138         select GENERIC_STRNCPY_FROM_USER
 139         select GENERIC_STRNLEN_USER
 140
 141 config EARLY_PRINTK
 142         bool
 143         default y
 144
 145 config COMPAT
 146         bool
 147         default y if PPC64
 148         select COMPAT_BINFMT_ELF
 149         select ARCH_WANT_OLD_COMPAT_IPC
 150
 151 config SYSVIPC_COMPAT
 152         bool
 153         depends on COMPAT && SYSVIPC
 154         default y
 155
 156 # All PPC32s use generic nvram driver through ppc_md
 157 config GENERIC_NVRAM
 158         bool
 159         default y if PPC32
 160
 161 config SCHED_OMIT_FRAME_POINTER
 162         bool
 163         default y
 164
 165 config ARCH_MAY_HAVE_PC_FDC
 166         bool
 167         default !PPC_PSERIES || PCI
 168
 169 config PPC_OF
 170         def_bool y
 171
 172 config PPC_UDBG_16550
 173         bool
 174         default n
 175
 176 config GENERIC_TBSYNC
 177         bool
 178         default y if PPC32 && SMP
 179         default n
 180
 181 config AUDIT_ARCH
 182         bool
 183         default y
 184
 185 config GENERIC_BUG
 186         bool
 187         default y
 188         depends on BUG
 189
 190 config SYS_SUPPORTS_APM_EMULATION
 191         default y if PMAC_APM_EMU
 192         bool
 193
 194 config EPAPR_BOOT
 195         bool
 196         help
 197           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 198         default n
 199
 200 config DEFAULT_UIMAGE
 201         bool
 202         help
 203           Used to allow a board to specify it wants a uImage built by default
 204         default n
 205
 206 config REDBOOT
 207         bool
 208
 209 config ARCH_HIBERNATION_POSSIBLE
 210         bool
 211         default y
 212
 213 config ARCH_SUSPEND_POSSIBLE
 214         def_bool y
 215         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 216                    (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
 217
 218 config PPC_DCR_NATIVE
 219         bool
 220         default n
 221
 222 config PPC_DCR_MMIO
 223         bool
 224         default n
 225
 226 config PPC_DCR
 227         bool
 228         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 229         default y
 230
 231 config PPC_OF_PLATFORM_PCI
 232         bool
 233         depends on PCI
 234         depends on PPC64 # not supported on 32 bits yet
 235         default n
 236
 237 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 238         def_bool y
 239
 240 config PPC_ADV_DEBUG_REGS
 241         bool
 242         depends on 40x || BOOKE
 243         default y
 244
 245 config PPC_ADV_DEBUG_IACS
 246         int
 247         depends on PPC_ADV_DEBUG_REGS
 248         default 4 if 44x
 249         default 2
 250
 251 config PPC_ADV_DEBUG_DACS
 252         int
 253         depends on PPC_ADV_DEBUG_REGS
 254         default 2
 255
 256 config PPC_ADV_DEBUG_DVCS
 257         int
 258         depends on PPC_ADV_DEBUG_REGS
 259         default 2 if 44x
 260         default 0
 261
 262 config PPC_ADV_DEBUG_DAC_RANGE
 263         bool
 264         depends on PPC_ADV_DEBUG_REGS && 44x
 265         default y
 266
 267 source "init/Kconfig"
 268
 269 source "kernel/Kconfig.freezer"
 270
 271 source "arch/powerpc/sysdev/Kconfig"
 272 source "arch/powerpc/platforms/Kconfig"
 273
 274 menu "Kernel options"
 275
 276 config HIGHMEM
 277         bool "High memory support"
 278         depends on PPC32
 279
 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 || PPC_POWERNV)
 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 || (44x && !SMP)) && EXPERIMENTAL
 349         help
 350           kexec is a system call that implements the ability to shutdown your
 351           current kernel, and to start another kernel.  It is like a reboot
 352           but it is independent of the system firmware.   And like a reboot
 353           you can start any kernel with it, not just Linux.
 354
 355           The name comes from the similarity to the exec system call.
 356
 357           It is an ongoing process to be certain the hardware in a machine
 358           is properly shutdown, so do not be surprised if this code does not
 359           initially work for you.  It may help to enable device hotplugging
 360           support.  As of this writing the exact hardware interface is
 361           strongly in flux, so no good recommendation can be made.
 362
 363 config CRASH_DUMP
 364         bool "Build a kdump crash kernel"
 365         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 366         select RELOCATABLE if PPC64 || 44x
 367         select DYNAMIC_MEMSTART if FSL_BOOKE
 368         help
 369           Build a kernel suitable for use as a kdump capture kernel.
 370           The same kernel binary can be used as production kernel and dump
 371           capture kernel.
 372
 373 config FA_DUMP
 374         bool "Firmware-assisted dump"
 375         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 376         help
 377           A robust mechanism to get reliable kernel crash dump with
 378           assistance from firmware. This approach does not use kexec,
 379           instead firmware assists in booting the kdump kernel
 380           while preserving memory contents. Firmware-assisted dump
 381           is meant to be a kdump replacement offering robustness and
 382           speed not possible without system firmware assistance.
 383
 384           If unsure, say "N"
 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 NUMA
 396         bool "NUMA support"
 397         depends on PPC64
 398         default y if SMP && PPC_PSERIES
 399
 400 config NODES_SHIFT
 401         int
 402         default "8" if PPC64
 403         default "4"
 404         depends on NEED_MULTIPLE_NODES
 405
 406 config MAX_ACTIVE_REGIONS
 407         int
 408         default "256" if PPC64
 409         default "32"
 410
 411 config ARCH_SELECT_MEMORY_MODEL
 412         def_bool y
 413         depends on PPC64
 414
 415 config ARCH_FLATMEM_ENABLE
 416         def_bool y
 417         depends on (PPC64 && !NUMA) || PPC32
 418
 419 config ARCH_SPARSEMEM_ENABLE
 420         def_bool y
 421         depends on PPC64
 422         select SPARSEMEM_VMEMMAP_ENABLE
 423
 424 config ARCH_SPARSEMEM_DEFAULT
 425         def_bool y
 426         depends on (SMP && PPC_PSERIES) || PPC_PS3
 427
 428 config SYS_SUPPORTS_HUGETLBFS
 429         bool
 430
 431 source "mm/Kconfig"
 432
 433 config ARCH_MEMORY_PROBE
 434         def_bool y
 435         depends on MEMORY_HOTPLUG
 436
 437 # Some NUMA nodes have memory ranges that span
 438 # other nodes.  Even though a pfn is valid and
 439 # between a node's start and end pfns, it may not
 440 # reside on that node.  See memmap_init_zone()
 441 # for details.
 442 config NODES_SPAN_OTHER_NODES
 443         def_bool y
 444         depends on NEED_MULTIPLE_NODES
 445
 446 config PPC_HAS_HASH_64K
 447         bool
 448         depends on PPC64
 449         default n
 450
 451 config STDBINUTILS
 452         bool "Using standard binutils settings"
 453         depends on 44x
 454         default y
 455         help
 456           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 457           Note, that kernel will be able to run only those applications,
 458           which had been compiled using binutils later than 2.17.50.0.3 with
 459           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 460           the older binutils, you can patch them with a trivial patch, which
 461           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 462
 463 choice
 464         prompt "Page size"
 465         default PPC_4K_PAGES
 466         help
 467           Select the kernel logical page size. Increasing the page size
 468           will reduce software overhead at each page boundary, allow
 469           hardware prefetch mechanisms to be more effective, and allow
 470           larger dma transfers increasing IO efficiency and reducing
 471           overhead. However the utilization of memory will increase.
 472           For example, each cached file will using a multiple of the
 473           page size to hold its contents and the difference between the
 474           end of file and the end of page is wasted.
 475
 476           Some dedicated systems, such as software raid serving with
 477           accelerated calculations, have shown significant increases.
 478
 479           If you configure a 64 bit kernel for 64k pages but the
 480           processor does not support them, then the kernel will simulate
 481           them with 4k pages, loading them on demand, but with the
 482           reduced software overhead and larger internal fragmentation.
 483           For the 32 bit kernel, a large page option will not be offered
 484           unless it is supported by the configured processor.
 485
 486           If unsure, choose 4K_PAGES.
 487
 488 config PPC_4K_PAGES
 489         bool "4k page size"
 490
 491 config PPC_16K_PAGES
 492         bool "16k page size" if 44x
 493
 494 config PPC_64K_PAGES
 495         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 496         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 497
 498 config PPC_256K_PAGES
 499         bool "256k page size" if 44x
 500         depends on !STDBINUTILS
 501         help
 502           Make the page size 256k.
 503
 504           As the ELF standard only requires alignment to support page
 505           sizes up to 64k, you will need to compile all of your user
 506           space applications with a non-standard binutils settings
 507           (see the STDBINUTILS description for details).
 508
 509           Say N unless you know what you are doing.
 510
 511 endchoice
 512
 513 config FORCE_MAX_ZONEORDER
 514         int "Maximum zone order"
 515         range 9 64 if PPC64 && PPC_64K_PAGES
 516         default "9" if PPC64 && PPC_64K_PAGES
 517         range 13 64 if PPC64 && !PPC_64K_PAGES
 518         default "13" if PPC64 && !PPC_64K_PAGES
 519         range 9 64 if PPC32 && PPC_16K_PAGES
 520         default "9" if PPC32 && PPC_16K_PAGES
 521         range 7 64 if PPC32 && PPC_64K_PAGES
 522         default "7" if PPC32 && PPC_64K_PAGES
 523         range 5 64 if PPC32 && PPC_256K_PAGES
 524         default "5" if PPC32 && PPC_256K_PAGES
 525         range 11 64
 526         default "11"
 527         help
 528           The kernel memory allocator divides physically contiguous memory
 529           blocks into "zones", where each zone is a power of two number of
 530           pages.  This option selects the largest power of two that the kernel
 531           keeps in the memory allocator.  If you need to allocate very large
 532           blocks of physically contiguous memory, then you may need to
 533           increase this value.
 534
 535           This config option is actually maximum order plus one. For example,
 536           a value of 11 means that the largest free memory block is 2^10 pages.
 537
 538           The page size is not necessarily 4KB.  For example, on 64-bit
 539           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 540           this in mind when choosing a value for this option.
 541
 542 config PPC_SUBPAGE_PROT
 543         bool "Support setting protections for 4k subpages"
 544         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 545         help
 546           This option adds support for a system call to allow user programs
 547           to set access permissions (read/write, readonly, or no access)
 548           on the 4k subpages of each 64k page.
 549
 550 config SCHED_SMT
 551         bool "SMT (Hyperthreading) scheduler support"
 552         depends on PPC64 && SMP
 553         help
 554           SMT scheduler support improves the CPU scheduler's decision making
 555           when dealing with POWER5 cpus at a cost of slightly increased
 556           overhead in some places. If unsure say N here.
 557
 558 config CMDLINE_BOOL
 559         bool "Default bootloader kernel arguments"
 560
 561 config CMDLINE
 562         string "Initial kernel command string"
 563         depends on CMDLINE_BOOL
 564         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 565         help
 566           On some platforms, there is currently no way for the boot loader to
 567           pass arguments to the kernel. For these platforms, you can supply
 568           some command-line options at build time by entering them here.  In
 569           most cases you will need to specify the root device here.
 570
 571 config EXTRA_TARGETS
 572         string "Additional default image types"
 573         help
 574           List additional targets to be built by the bootwrapper here (separated
 575           by spaces).  This is useful for targets that depend of device tree
 576           files in the .dts directory.
 577
 578           Targets in this list will be build as part of the default build
 579           target, or when the user does a 'make zImage' or a
 580           'make zImage.initrd'.
 581
 582           If unsure, leave blank
 583
 584 config ARCH_WANTS_FREEZER_CONTROL
 585         def_bool y
 586         depends on ADB_PMU
 587
 588 source kernel/power/Kconfig
 589
 590 config SECCOMP
 591         bool "Enable seccomp to safely compute untrusted bytecode"
 592         depends on PROC_FS
 593         default y
 594         help
 595           This kernel feature is useful for number crunching applications
 596           that may need to compute untrusted bytecode during their
 597           execution. By using pipes or other transports made available to
 598           the process as file descriptors supporting the read/write
 599           syscalls, it's possible to isolate those applications in
 600           their own address space using seccomp. Once seccomp is
 601           enabled via /proc/<pid>/seccomp, it cannot be disabled
 602           and the task is only allowed to execute a few safe syscalls
 603           defined by each seccomp mode.
 604
 605           If unsure, say Y. Only embedded should say N here.
 606
 607 endmenu
 608
 609 config ISA_DMA_API
 610         bool
 611         default PCI
 612
 613 menu "Bus options"
 614
 615 config ISA
 616         bool "Support for ISA-bus hardware"
 617         depends on PPC_PREP || PPC_CHRP
 618         select PPC_I8259
 619         help
 620           Find out whether you have ISA slots on your motherboard.  ISA is the
 621           name of a bus system, i.e. the way the CPU talks to the other stuff
 622           inside your box.  If you have an Apple machine, say N here; if you
 623           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 624           you have an embedded board, consult your board documentation.
 625
 626 config ZONE_DMA
 627         bool
 628         default y
 629
 630 config NEED_DMA_MAP_STATE
 631         def_bool (PPC64 || NOT_COHERENT_CACHE)
 632
 633 config NEED_SG_DMA_LENGTH
 634         def_bool y
 635
 636 config GENERIC_ISA_DMA
 637         bool
 638         depends on ISA_DMA_API
 639         default y
 640
 641 config PPC_INDIRECT_PCI
 642         bool
 643         depends on PCI
 644         default y if 40x || 44x
 645         default n
 646
 647 config EISA
 648         bool
 649
 650 config SBUS
 651         bool
 652
 653 config FSL_SOC
 654         bool
 655         select HAVE_CAN_FLEXCAN if NET && CAN
 656         select PPC_CLOCK
 657
 658 config FSL_PCI
 659         bool
 660         select PPC_INDIRECT_PCI
 661         select PCI_QUIRKS
 662
 663 config FSL_PMC
 664         bool
 665         default y
 666         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 667         help
 668           Freescale MPC85xx/MPC86xx power management controller support
 669           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 670
 671 config PPC4xx_CPM
 672         bool
 673         default y
 674         depends on SUSPEND && (44x || 40x)
 675         help
 676           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 677           It also enables support for two different idle states (idle-wait
 678           and idle-doze).
 679
 680 config 4xx_SOC
 681         bool
 682
 683 config FSL_LBC
 684         bool "Freescale Local Bus support"
 685         depends on FSL_SOC
 686         help
 687           Enables reporting of errors from the Freescale local bus
 688           controller.  Also contains some common code used by
 689           drivers for specific local bus peripherals.
 690
 691 config FSL_IFC
 692         bool
 693         depends on FSL_SOC
 694
 695 config FSL_GTM
 696         bool
 697         depends on PPC_83xx || QUICC_ENGINE || CPM2
 698         help
 699           Freescale General-purpose Timers support
 700
 701 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 702 config MCA
 703         bool
 704
 705 # Platforms that what PCI turned unconditionally just do select PCI
 706 # in their config node.  Platforms that want to choose at config
 707 # time should select PPC_PCI_CHOICE
 708 config PPC_PCI_CHOICE
 709         bool
 710
 711 config PCI
 712         bool "PCI support" if PPC_PCI_CHOICE
 713         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 714                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 715         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 716         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 717         select ARCH_SUPPORTS_MSI
 718         select GENERIC_PCI_IOMAP
 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 && 44x
 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"