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 GENERIC_HWEIGHT
  91         bool
  92         default y
  93
  94 config GENERIC_FIND_NEXT_BIT
  95         bool
  96         default y
  97
  98 config GENERIC_FIND_BIT_LE
  99         bool
 100         default y
 101
 102 config GENERIC_GPIO
 103         bool
 104         help
 105           Generic GPIO API support
 106
 107 config ARCH_NO_VIRT_TO_BUS
 108         def_bool PPC64
 109
 110 config PPC
 111         bool
 112         default y
 113         select OF
 114         select OF_EARLY_FLATTREE
 115         select HAVE_FTRACE_MCOUNT_RECORD
 116         select HAVE_DYNAMIC_FTRACE
 117         select HAVE_FUNCTION_TRACER
 118         select HAVE_FUNCTION_GRAPH_TRACER
 119         select ARCH_WANT_OPTIONAL_GPIOLIB
 120         select HAVE_IDE
 121         select HAVE_IOREMAP_PROT
 122         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 123         select HAVE_KPROBES
 124         select HAVE_ARCH_KGDB
 125         select HAVE_KRETPROBES
 126         select HAVE_ARCH_TRACEHOOK
 127         select HAVE_MEMBLOCK
 128         select HAVE_DMA_ATTRS
 129         select HAVE_DMA_API_DEBUG
 130         select USE_GENERIC_SMP_HELPERS if SMP
 131         select HAVE_OPROFILE
 132         select HAVE_SYSCALL_WRAPPERS if PPC64
 133         select GENERIC_ATOMIC64 if PPC32
 134         select HAVE_IRQ_WORK
 135         select HAVE_PERF_EVENTS
 136         select HAVE_REGS_AND_STACK_ACCESS_API
 137         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 138         select HAVE_GENERIC_HARDIRQS
 139         select HAVE_SPARSE_IRQ
 140         select IRQ_PER_CPU
 141         select GENERIC_IRQ_SHOW
 142         select GENERIC_IRQ_SHOW_LEVEL
 143
 144 config EARLY_PRINTK
 145         bool
 146         default y
 147
 148 config COMPAT
 149         bool
 150         default y if PPC64
 151         select COMPAT_BINFMT_ELF
 152
 153 config SYSVIPC_COMPAT
 154         bool
 155         depends on COMPAT && SYSVIPC
 156         default y
 157
 158 # All PPC32s use generic nvram driver through ppc_md
 159 config GENERIC_NVRAM
 160         bool
 161         default y if PPC32
 162
 163 config SCHED_OMIT_FRAME_POINTER
 164         bool
 165         default y
 166
 167 config ARCH_MAY_HAVE_PC_FDC
 168         bool
 169         default !PPC_PSERIES || PCI
 170
 171 config PPC_OF
 172         def_bool y
 173
 174 config PPC_UDBG_16550
 175         bool
 176         default n
 177
 178 config GENERIC_TBSYNC
 179         bool
 180         default y if PPC32 && SMP
 181         default n
 182
 183 config AUDIT_ARCH
 184         bool
 185         default y
 186
 187 config GENERIC_BUG
 188         bool
 189         default y
 190         depends on BUG
 191
 192 config SYS_SUPPORTS_APM_EMULATION
 193         default y if PMAC_APM_EMU
 194         bool
 195
 196 config DEFAULT_UIMAGE
 197         bool
 198         help
 199           Used to allow a board to specify it wants a uImage built by default
 200         default n
 201
 202 config REDBOOT
 203         bool
 204
 205 config ARCH_HIBERNATION_POSSIBLE
 206         bool
 207         default y
 208
 209 config ARCH_SUSPEND_POSSIBLE
 210         def_bool y
 211         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 212                    PPC_85xx || PPC_86xx || PPC_PSERIES || 44x || 40x
 213
 214 config PPC_DCR_NATIVE
 215         bool
 216         default n
 217
 218 config PPC_DCR_MMIO
 219         bool
 220         default n
 221
 222 config PPC_DCR
 223         bool
 224         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 225         default y
 226
 227 config PPC_OF_PLATFORM_PCI
 228         bool
 229         depends on PCI
 230         depends on PPC64 # not supported on 32 bits yet
 231         default n
 232
 233 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 234         def_bool y
 235
 236 config PPC_ADV_DEBUG_REGS
 237         bool
 238         depends on 40x || BOOKE
 239         default y
 240
 241 config PPC_ADV_DEBUG_IACS
 242         int
 243         depends on PPC_ADV_DEBUG_REGS
 244         default 4 if 44x
 245         default 2
 246
 247 config PPC_ADV_DEBUG_DACS
 248         int
 249         depends on PPC_ADV_DEBUG_REGS
 250         default 2
 251
 252 config PPC_ADV_DEBUG_DVCS
 253         int
 254         depends on PPC_ADV_DEBUG_REGS
 255         default 2 if 44x
 256         default 0
 257
 258 config PPC_ADV_DEBUG_DAC_RANGE
 259         bool
 260         depends on PPC_ADV_DEBUG_REGS && 44x
 261         default y
 262
 263 source "init/Kconfig"
 264
 265 source "kernel/Kconfig.freezer"
 266
 267 source "arch/powerpc/sysdev/Kconfig"
 268 source "arch/powerpc/platforms/Kconfig"
 269
 270 menu "Kernel options"
 271
 272 config HIGHMEM
 273         bool "High memory support"
 274         depends on PPC32
 275
 276 source kernel/time/Kconfig
 277 source kernel/Kconfig.hz
 278 source kernel/Kconfig.preempt
 279 source "fs/Kconfig.binfmt"
 280
 281 config HUGETLB_PAGE_SIZE_VARIABLE
 282         bool
 283         depends on HUGETLB_PAGE
 284         default y
 285
 286 config MATH_EMULATION
 287         bool "Math emulation"
 288         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 289         ---help---
 290           Some PowerPC chips designed for embedded applications do not have
 291           a floating-point unit and therefore do not implement the
 292           floating-point instructions in the PowerPC instruction set.  If you
 293           say Y here, the kernel will include code to emulate a floating-point
 294           unit, which will allow programs that use floating-point
 295           instructions to run.
 296
 297 config 8XX_MINIMAL_FPEMU
 298         bool "Minimal math emulation for 8xx"
 299         depends on 8xx && !MATH_EMULATION
 300         help
 301           Older arch/ppc kernels still emulated a few floating point
 302           instructions such as load and store, even when full math
 303           emulation is disabled.  Say "Y" here if you want to preserve
 304           this behavior.
 305
 306           It is recommended that you build a soft-float userspace instead.
 307
 308 config IOMMU_HELPER
 309         def_bool PPC64
 310
 311 config SWIOTLB
 312         bool "SWIOTLB support"
 313         default n
 314         select IOMMU_HELPER
 315         ---help---
 316           Support for IO bounce buffering for systems without an IOMMU.
 317           This allows us to DMA to the full physical address space on
 318           platforms where the size of a physical address is larger
 319           than the bus address.  Not all platforms support this.
 320
 321 config HOTPLUG_CPU
 322         bool "Support for enabling/disabling CPUs"
 323         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 324         ---help---
 325           Say Y here to be able to disable and re-enable individual
 326           CPUs at runtime on SMP machines.
 327
 328           Say N if you are unsure.
 329
 330 config ARCH_CPU_PROBE_RELEASE
 331         def_bool y
 332         depends on HOTPLUG_CPU
 333
 334 config ARCH_ENABLE_MEMORY_HOTPLUG
 335         def_bool y
 336
 337 config ARCH_HAS_WALK_MEMORY
 338         def_bool y
 339
 340 config ARCH_ENABLE_MEMORY_HOTREMOVE
 341         def_bool y
 342
 343 config KEXEC
 344         bool "kexec system call (EXPERIMENTAL)"
 345         depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL
 346         help
 347           kexec is a system call that implements the ability to shutdown your
 348           current kernel, and to start another kernel.  It is like a reboot
 349           but it is independent of the system firmware.   And like a reboot
 350           you can start any kernel with it, not just Linux.
 351
 352           The name comes from the similarity to the exec system call.
 353
 354           It is an ongoing process to be certain the hardware in a machine
 355           is properly shutdown, so do not be surprised if this code does not
 356           initially work for you.  It may help to enable device hotplugging
 357           support.  As of this writing the exact hardware interface is
 358           strongly in flux, so no good recommendation can be made.
 359
 360 config CRASH_DUMP
 361         bool "Build a kdump crash kernel"
 362         depends on PPC64 || 6xx || FSL_BOOKE
 363         select RELOCATABLE if PPC64 || FSL_BOOKE
 364         help
 365           Build a kernel suitable for use as a kdump capture kernel.
 366           The same kernel binary can be used as production kernel and dump
 367           capture kernel.
 368
 369 config PHYP_DUMP
 370         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 371         depends on PPC_PSERIES && EXPERIMENTAL
 372         help
 373           Hypervisor-assisted dump is meant to be a kdump replacement
 374           offering robustness and speed not possible without system
 375           hypervisor assistance.
 376
 377           If unsure, say "N"
 378
 379 config PPCBUG_NVRAM
 380         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 381         default y if PPC_PREP
 382
 383 config IRQ_ALL_CPUS
 384         bool "Distribute interrupts on all CPUs by default"
 385         depends on SMP && !MV64360
 386         help
 387           This option gives the kernel permission to distribute IRQs across
 388           multiple CPUs.  Saying N here will route all IRQs to the first
 389           CPU.  Generally saying Y is safe, although some problems have been
 390           reported with SMP Power Macintoshes with this option enabled.
 391
 392 config NUMA
 393         bool "NUMA support"
 394         depends on PPC64
 395         default y if SMP && PPC_PSERIES
 396
 397 config NODES_SHIFT
 398         int
 399         default "8" if PPC64
 400         default "4"
 401         depends on NEED_MULTIPLE_NODES
 402
 403 config MAX_ACTIVE_REGIONS
 404         int
 405         default "256" if PPC64
 406         default "32"
 407
 408 config ARCH_SELECT_MEMORY_MODEL
 409         def_bool y
 410         depends on PPC64
 411
 412 config ARCH_FLATMEM_ENABLE
 413         def_bool y
 414         depends on (PPC64 && !NUMA) || PPC32
 415
 416 config ARCH_SPARSEMEM_ENABLE
 417         def_bool y
 418         depends on PPC64
 419         select SPARSEMEM_VMEMMAP_ENABLE
 420
 421 config ARCH_SPARSEMEM_DEFAULT
 422         def_bool y
 423         depends on (SMP && PPC_PSERIES) || PPC_PS3
 424
 425 config ARCH_POPULATES_NODE_MAP
 426         def_bool y
 427
 428 config SYS_SUPPORTS_HUGETLBFS
 429        def_bool y
 430        depends on PPC_BOOK3S_64
 431
 432 source "mm/Kconfig"
 433
 434 config ARCH_MEMORY_PROBE
 435         def_bool y
 436         depends on MEMORY_HOTPLUG
 437
 438 # Some NUMA nodes have memory ranges that span
 439 # other nodes.  Even though a pfn is valid and
 440 # between a node's start and end pfns, it may not
 441 # reside on that node.  See memmap_init_zone()
 442 # for details.
 443 config NODES_SPAN_OTHER_NODES
 444         def_bool y
 445         depends on NEED_MULTIPLE_NODES
 446
 447 config PPC_HAS_HASH_64K
 448         bool
 449         depends on PPC64
 450         default n
 451
 452 config STDBINUTILS
 453         bool "Using standard binutils settings"
 454         depends on 44x
 455         default y
 456         help
 457           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 458           Note, that kernel will be able to run only those applications,
 459           which had been compiled using binutils later than 2.17.50.0.3 with
 460           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 461           the older binutils, you can patch them with a trivial patch, which
 462           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 463
 464 choice
 465         prompt "Page size"
 466         default PPC_4K_PAGES
 467         help
 468           Select the kernel logical page size. Increasing the page size
 469           will reduce software overhead at each page boundary, allow
 470           hardware prefetch mechanisms to be more effective, and allow
 471           larger dma transfers increasing IO efficiency and reducing
 472           overhead. However the utilization of memory will increase.
 473           For example, each cached file will using a multiple of the
 474           page size to hold its contents and the difference between the
 475           end of file and the end of page is wasted.
 476
 477           Some dedicated systems, such as software raid serving with
 478           accelerated calculations, have shown significant increases.
 479
 480           If you configure a 64 bit kernel for 64k pages but the
 481           processor does not support them, then the kernel will simulate
 482           them with 4k pages, loading them on demand, but with the
 483           reduced software overhead and larger internal fragmentation.
 484           For the 32 bit kernel, a large page option will not be offered
 485           unless it is supported by the configured processor.
 486
 487           If unsure, choose 4K_PAGES.
 488
 489 config PPC_4K_PAGES
 490         bool "4k page size"
 491
 492 config PPC_16K_PAGES
 493         bool "16k page size" if 44x
 494
 495 config PPC_64K_PAGES
 496         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 497         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 498
 499 config PPC_256K_PAGES
 500         bool "256k page size" if 44x
 501         depends on !STDBINUTILS
 502         help
 503           Make the page size 256k.
 504
 505           As the ELF standard only requires alignment to support page
 506           sizes up to 64k, you will need to compile all of your user
 507           space applications with a non-standard binutils settings
 508           (see the STDBINUTILS description for details).
 509
 510           Say N unless you know what you are doing.
 511
 512 endchoice
 513
 514 config FORCE_MAX_ZONEORDER
 515         int "Maximum zone order"
 516         range 9 64 if PPC64 && PPC_64K_PAGES
 517         default "9" if PPC64 && PPC_64K_PAGES
 518         range 13 64 if PPC64 && !PPC_64K_PAGES
 519         default "13" if PPC64 && !PPC_64K_PAGES
 520         range 9 64 if PPC32 && PPC_16K_PAGES
 521         default "9" if PPC32 && PPC_16K_PAGES
 522         range 7 64 if PPC32 && PPC_64K_PAGES
 523         default "7" if PPC32 && PPC_64K_PAGES
 524         range 5 64 if PPC32 && PPC_256K_PAGES
 525         default "5" if PPC32 && PPC_256K_PAGES
 526         range 11 64
 527         default "11"
 528         help
 529           The kernel memory allocator divides physically contiguous memory
 530           blocks into "zones", where each zone is a power of two number of
 531           pages.  This option selects the largest power of two that the kernel
 532           keeps in the memory allocator.  If you need to allocate very large
 533           blocks of physically contiguous memory, then you may need to
 534           increase this value.
 535
 536           This config option is actually maximum order plus one. For example,
 537           a value of 11 means that the largest free memory block is 2^10 pages.
 538
 539           The page size is not necessarily 4KB.  For example, on 64-bit
 540           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 541           this in mind when choosing a value for this option.
 542
 543 config PPC_SUBPAGE_PROT
 544         bool "Support setting protections for 4k subpages"
 545         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 546         help
 547           This option adds support for a system call to allow user programs
 548           to set access permissions (read/write, readonly, or no access)
 549           on the 4k subpages of each 64k page.
 550
 551 config SCHED_SMT
 552         bool "SMT (Hyperthreading) scheduler support"
 553         depends on PPC64 && SMP
 554         help
 555           SMT scheduler support improves the CPU scheduler's decision making
 556           when dealing with POWER5 cpus at a cost of slightly increased
 557           overhead in some places. If unsure say N here.
 558
 559 config CMDLINE_BOOL
 560         bool "Default bootloader kernel arguments"
 561
 562 config CMDLINE
 563         string "Initial kernel command string"
 564         depends on CMDLINE_BOOL
 565         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 566         help
 567           On some platforms, there is currently no way for the boot loader to
 568           pass arguments to the kernel. For these platforms, you can supply
 569           some command-line options at build time by entering them here.  In
 570           most cases you will need to specify the root device here.
 571
 572 config EXTRA_TARGETS
 573         string "Additional default image types"
 574         help
 575           List additional targets to be built by the bootwrapper here (separated
 576           by spaces).  This is useful for targets that depend of device tree
 577           files in the .dts directory.
 578
 579           Targets in this list will be build as part of the default build
 580           target, or when the user does a 'make zImage' or a
 581           'make zImage.initrd'.
 582
 583           If unsure, leave blank
 584
 585 config ARCH_WANTS_FREEZER_CONTROL
 586         def_bool y
 587         depends on ADB_PMU
 588
 589 source kernel/power/Kconfig
 590
 591 config SECCOMP
 592         bool "Enable seccomp to safely compute untrusted bytecode"
 593         depends on PROC_FS
 594         default y
 595         help
 596           This kernel feature is useful for number crunching applications
 597           that may need to compute untrusted bytecode during their
 598           execution. By using pipes or other transports made available to
 599           the process as file descriptors supporting the read/write
 600           syscalls, it's possible to isolate those applications in
 601           their own address space using seccomp. Once seccomp is
 602           enabled via /proc/<pid>/seccomp, it cannot be disabled
 603           and the task is only allowed to execute a few safe syscalls
 604           defined by each seccomp mode.
 605
 606           If unsure, say Y. Only embedded should say N here.
 607
 608 endmenu
 609
 610 config ISA_DMA_API
 611         bool
 612         default !PPC_ISERIES || PCI
 613
 614 menu "Bus options"
 615
 616 config ISA
 617         bool "Support for ISA-bus hardware"
 618         depends on PPC_PREP || PPC_CHRP
 619         select PPC_I8259
 620         help
 621           Find out whether you have ISA slots on your motherboard.  ISA is the
 622           name of a bus system, i.e. the way the CPU talks to the other stuff
 623           inside your box.  If you have an Apple machine, say N here; if you
 624           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 625           you have an embedded board, consult your board documentation.
 626
 627 config ZONE_DMA
 628         bool
 629         default y
 630
 631 config NEED_DMA_MAP_STATE
 632         def_bool (PPC64 || NOT_COHERENT_CACHE)
 633
 634 config NEED_SG_DMA_LENGTH
 635         def_bool y
 636
 637 config GENERIC_ISA_DMA
 638         bool
 639         depends on ISA_DMA_API
 640         default y
 641
 642 config PPC_INDIRECT_PCI
 643         bool
 644         depends on PCI
 645         default y if 40x || 44x
 646         default n
 647
 648 config EISA
 649         bool
 650
 651 config SBUS
 652         bool
 653
 654 config FSL_SOC
 655         bool
 656
 657 config FSL_PCI
 658         bool
 659         select PPC_INDIRECT_PCI
 660         select PCI_QUIRKS
 661
 662 config FSL_PMC
 663         bool
 664         default y
 665         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 666         help
 667           Freescale MPC85xx/MPC86xx power management controller support
 668           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 669
 670 config PPC4xx_CPM
 671         bool
 672         default y
 673         depends on SUSPEND && (44x || 40x)
 674         help
 675           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 676           It also enables support for two different idle states (idle-wait
 677           and idle-doze).
 678
 679 config 4xx_SOC
 680         bool
 681
 682 config FSL_LBC
 683         bool "Freescale Local Bus support"
 684         depends on FSL_SOC
 685         help
 686           Enables reporting of errors from the Freescale local bus
 687           controller.  Also contains some common code used by
 688           drivers for specific local bus peripherals.
 689
 690 config FSL_GTM
 691         bool
 692         depends on PPC_83xx || QUICC_ENGINE || CPM2
 693         help
 694           Freescale General-purpose Timers support
 695
 696 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 697 config MCA
 698         bool
 699
 700 # Platforms that what PCI turned unconditionally just do select PCI
 701 # in their config node.  Platforms that want to choose at config
 702 # time should select PPC_PCI_CHOICE
 703 config PPC_PCI_CHOICE
 704         bool
 705
 706 config PCI
 707         bool "PCI support" if PPC_PCI_CHOICE
 708         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 709                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 710         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 711         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 712         select ARCH_SUPPORTS_MSI
 713         help
 714           Find out whether your system includes a PCI bus. PCI is the name of
 715           a bus system, i.e. the way the CPU talks to the other stuff inside
 716           your box.  If you say Y here, the kernel will include drivers and
 717           infrastructure code to support PCI bus devices.
 718
 719 config PCI_DOMAINS
 720         def_bool PCI
 721
 722 config PCI_SYSCALL
 723         def_bool PCI
 724
 725 config PCI_QSPAN
 726         bool "QSpan PCI"
 727         depends on !4xx && !CPM2 && 8xx
 728         select PPC_I8259
 729         help
 730           Say Y here if you have a system based on a Motorola 8xx-series
 731           embedded processor with a QSPAN PCI interface, otherwise say N.
 732
 733 config PCI_8260
 734         bool
 735         depends on PCI && 8260
 736         select PPC_INDIRECT_PCI
 737         default y
 738
 739 config 8260_PCI9
 740         bool "Enable workaround for MPC826x erratum PCI 9"
 741         depends on PCI_8260 && !8272
 742         default y
 743
 744 choice
 745         prompt "IDMA channel for PCI 9 workaround"
 746         depends on 8260_PCI9
 747
 748 config 8260_PCI9_IDMA1
 749         bool "IDMA1"
 750
 751 config 8260_PCI9_IDMA2
 752         bool "IDMA2"
 753
 754 config 8260_PCI9_IDMA3
 755         bool "IDMA3"
 756
 757 config 8260_PCI9_IDMA4
 758         bool "IDMA4"
 759
 760 endchoice
 761
 762 source "drivers/pci/pcie/Kconfig"
 763
 764 source "drivers/pci/Kconfig"
 765
 766 source "drivers/pcmcia/Kconfig"
 767
 768 source "drivers/pci/hotplug/Kconfig"
 769
 770 config HAS_RAPIDIO
 771         bool
 772         default n
 773
 774 config RAPIDIO
 775         bool "RapidIO support"
 776         depends on HAS_RAPIDIO || PCI
 777         help
 778           If you say Y here, the kernel will include drivers and
 779           infrastructure code to support RapidIO interconnect devices.
 780
 781 config FSL_RIO
 782         bool "Freescale Embedded SRIO Controller support"
 783         depends on RAPIDIO && HAS_RAPIDIO
 784         default "n"
 785         ---help---
 786           Include support for RapidIO controller on Freescale embedded
 787           processors (MPC8548, MPC8641, etc).
 788
 789 source "drivers/rapidio/Kconfig"
 790
 791 endmenu
 792
 793 menu "Advanced setup"
 794         depends on PPC32
 795
 796 config ADVANCED_OPTIONS
 797         bool "Prompt for advanced kernel configuration options"
 798         help
 799           This option will enable prompting for a variety of advanced kernel
 800           configuration options.  These options can cause the kernel to not
 801           work if they are set incorrectly, but can be used to optimize certain
 802           aspects of kernel memory management.
 803
 804           Unless you know what you are doing, say N here.
 805
 806 comment "Default settings for advanced configuration options are used"
 807         depends on !ADVANCED_OPTIONS
 808
 809 config LOWMEM_SIZE_BOOL
 810         bool "Set maximum low memory"
 811         depends on ADVANCED_OPTIONS
 812         help
 813           This option allows you to set the maximum amount of memory which
 814           will be used as "low memory", that is, memory which the kernel can
 815           access directly, without having to set up a kernel virtual mapping.
 816           This can be useful in optimizing the layout of kernel virtual
 817           memory.
 818
 819           Say N here unless you know what you are doing.
 820
 821 config LOWMEM_SIZE
 822         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 823         default "0x30000000"
 824
 825 config LOWMEM_CAM_NUM_BOOL
 826         bool "Set number of CAMs to use to map low memory"
 827         depends on ADVANCED_OPTIONS && FSL_BOOKE
 828         help
 829           This option allows you to set the maximum number of CAM slots that
 830           will be used to map low memory.  There are a limited number of slots
 831           available and even more limited number that will fit in the L1 MMU.
 832           However, using more entries will allow mapping more low memory.  This
 833           can be useful in optimizing the layout of kernel virtual memory.
 834
 835           Say N here unless you know what you are doing.
 836
 837 config LOWMEM_CAM_NUM
 838         depends on FSL_BOOKE
 839         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 840         default 3
 841
 842 config RELOCATABLE
 843         bool "Build a relocatable kernel (EXPERIMENTAL)"
 844         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 845         help
 846           This builds a kernel image that is capable of running at the
 847           location the kernel is loaded at (some alignment restrictions may
 848           exist).
 849
 850           One use is for the kexec on panic case where the recovery kernel
 851           must live at a different physical address than the primary
 852           kernel.
 853
 854           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 855           it has been loaded at and the compile time physical addresses
 856           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 857           setting can still be useful to bootwrappers that need to know the
 858           load location of the kernel (eg. u-boot/mkimage).
 859
 860 config PAGE_OFFSET_BOOL
 861         bool "Set custom page offset address"
 862         depends on ADVANCED_OPTIONS
 863         help
 864           This option allows you to set the kernel virtual address at which
 865           the kernel will map low memory.  This can be useful in optimizing
 866           the virtual memory layout of the system.
 867
 868           Say N here unless you know what you are doing.
 869
 870 config PAGE_OFFSET
 871         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 872         default "0xc0000000"
 873
 874 config KERNEL_START_BOOL
 875         bool "Set custom kernel base address"
 876         depends on ADVANCED_OPTIONS
 877         help
 878           This option allows you to set the kernel virtual address at which
 879           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 880           however there are times (like kdump) that one might not want them
 881           to be the same.
 882
 883           Say N here unless you know what you are doing.
 884
 885 config KERNEL_START
 886         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 887         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 888         default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
 889         default "0xc0000000"
 890
 891 config PHYSICAL_START_BOOL
 892         bool "Set physical address where the kernel is loaded"
 893         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 894         help
 895           This gives the physical address where the kernel is loaded.
 896
 897           Say N here unless you know what you are doing.
 898
 899 config PHYSICAL_START
 900         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 901         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
 902         default "0x00000000"
 903
 904 config PHYSICAL_ALIGN
 905         hex
 906         default "0x04000000" if FSL_BOOKE
 907         help
 908           This value puts the alignment restrictions on physical address
 909           where kernel is loaded and run from. Kernel is compiled for an
 910           address which meets above alignment restriction.
 911
 912 config TASK_SIZE_BOOL
 913         bool "Set custom user task size"
 914         depends on ADVANCED_OPTIONS
 915         help
 916           This option allows you to set the amount of virtual address space
 917           allocated to user tasks.  This can be useful in optimizing the
 918           virtual memory layout of the system.
 919
 920           Say N here unless you know what you are doing.
 921
 922 config TASK_SIZE
 923         hex "Size of user task space" if TASK_SIZE_BOOL
 924         default "0x80000000" if PPC_PREP || PPC_8xx
 925         default "0xc0000000"
 926
 927 config CONSISTENT_SIZE_BOOL
 928         bool "Set custom consistent memory pool size"
 929         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 930         help
 931           This option allows you to set the size of the
 932           consistent memory pool.  This pool of virtual memory
 933           is used to make consistent memory allocations.
 934
 935 config CONSISTENT_SIZE
 936         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 937         default "0x00200000" if NOT_COHERENT_CACHE
 938
 939 config PIN_TLB
 940         bool "Pinned Kernel TLBs (860 ONLY)"
 941         depends on ADVANCED_OPTIONS && 8xx
 942 endmenu
 943
 944 if PPC64
 945 config RELOCATABLE
 946         bool "Build a relocatable kernel"
 947         help
 948           This builds a kernel image that is capable of running anywhere
 949           in the RMA (real memory area) at any 16k-aligned base address.
 950           The kernel is linked as a position-independent executable (PIE)
 951           and contains dynamic relocations which are processed early
 952           in the bootup process.
 953
 954           One use is for the kexec on panic case where the recovery kernel
 955           must live at a different physical address than the primary
 956           kernel.
 957
 958 config PAGE_OFFSET
 959         hex
 960         default "0xc000000000000000"
 961 config KERNEL_START
 962         hex
 963         default "0xc000000000000000"
 964 config PHYSICAL_START
 965         hex
 966         default "0x00000000"
 967 endif
 968
 969 source "net/Kconfig"
 970
 971 source "drivers/Kconfig"
 972
 973 source "fs/Kconfig"
 974
 975 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 976
 977 source "lib/Kconfig"
 978
 979 source "arch/powerpc/Kconfig.debug"
 980
 981 source "security/Kconfig"
 982
 983 config KEYS_COMPAT
 984         bool
 985         depends on COMPAT && KEYS
 986         default y
 987
 988 source "crypto/Kconfig"
 989
 990 config PPC_CLOCK
 991         bool
 992         default n
 993         select HAVE_CLK
 994
 995 config PPC_LIB_RHEAP
 996         bool
 997
 998 source "arch/powerpc/kvm/Kconfig"