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 MMU
  24         bool
  25         default y
  26
  27 config GENERIC_CMOS_UPDATE
  28         def_bool y
  29
  30 config GENERIC_TIME_VSYSCALL
  31         def_bool y
  32
  33 config GENERIC_CLOCKEVENTS
  34         def_bool y
  35
  36 config GENERIC_HARDIRQS
  37         bool
  38         default y
  39
  40 config GENERIC_HARDIRQS_NO__DO_IRQ
  41         bool
  42         default y
  43
  44 config HAVE_SETUP_PER_CPU_AREA
  45         def_bool PPC64
  46
  47 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  48         def_bool PPC64
  49
  50 config IRQ_PER_CPU
  51         bool
  52         default y
  53
  54 config NR_IRQS
  55         int "Number of virtual interrupt numbers"
  56         range 32 32768
  57         default "512"
  58         help
  59           This defines the number of virtual interrupt numbers the kernel
  60           can manage. Virtual interrupt numbers are what you see in
  61           /proc/interrupts. If you configure your system to have too few,
  62           drivers will fail to load or worse - handle with care.
  63
  64 config STACKTRACE_SUPPORT
  65         bool
  66         default y
  67
  68 config HAVE_LATENCYTOP_SUPPORT
  69         def_bool y
  70
  71 config TRACE_IRQFLAGS_SUPPORT
  72         bool
  73         default y
  74
  75 config LOCKDEP_SUPPORT
  76         bool
  77         default y
  78
  79 config RWSEM_GENERIC_SPINLOCK
  80         bool
  81
  82 config RWSEM_XCHGADD_ALGORITHM
  83         bool
  84         default y
  85
  86 config GENERIC_LOCKBREAK
  87         bool
  88         default y
  89         depends on SMP && PREEMPT
  90
  91 config ARCH_HAS_ILOG2_U32
  92         bool
  93         default y
  94
  95 config ARCH_HAS_ILOG2_U64
  96         bool
  97         default y if 64BIT
  98
  99 config GENERIC_HWEIGHT
 100         bool
 101         default y
 102
 103 config GENERIC_FIND_NEXT_BIT
 104         bool
 105         default y
 106
 107 config GENERIC_GPIO
 108         bool
 109         help
 110           Generic GPIO API support
 111
 112 config ARCH_NO_VIRT_TO_BUS
 113         def_bool PPC64
 114
 115 config PPC
 116         bool
 117         default y
 118         select OF
 119         select OF_EARLY_FLATTREE
 120         select HAVE_FTRACE_MCOUNT_RECORD
 121         select HAVE_DYNAMIC_FTRACE
 122         select HAVE_FUNCTION_TRACER
 123         select HAVE_FUNCTION_GRAPH_TRACER
 124         select ARCH_WANT_OPTIONAL_GPIOLIB
 125         select HAVE_IDE
 126         select HAVE_IOREMAP_PROT
 127         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 128         select HAVE_KPROBES
 129         select HAVE_ARCH_KGDB
 130         select HAVE_KRETPROBES
 131         select HAVE_ARCH_TRACEHOOK
 132         select HAVE_MEMBLOCK
 133         select HAVE_DMA_ATTRS
 134         select HAVE_DMA_API_DEBUG
 135         select USE_GENERIC_SMP_HELPERS if SMP
 136         select HAVE_OPROFILE
 137         select HAVE_SYSCALL_WRAPPERS if PPC64
 138         select GENERIC_ATOMIC64 if PPC32
 139         select HAVE_IRQ_WORK
 140         select HAVE_PERF_EVENTS
 141         select HAVE_REGS_AND_STACK_ACCESS_API
 142         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 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
 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 SPARSE_IRQ
 393         bool "Support sparse irq numbering"
 394         default n
 395         help
 396           This enables support for sparse irqs. This is useful for distro
 397           kernels that want to define a high CONFIG_NR_CPUS value but still
 398           want to have low kernel memory footprint on smaller machines.
 399
 400           ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
 401             out the irq_desc[] array in a more NUMA-friendly way. )
 402
 403           If you don't know what to do here, say N.
 404
 405 config NUMA
 406         bool "NUMA support"
 407         depends on PPC64
 408         default y if SMP && PPC_PSERIES
 409
 410 config NODES_SHIFT
 411         int
 412         default "8" if PPC64
 413         default "4"
 414         depends on NEED_MULTIPLE_NODES
 415
 416 config MAX_ACTIVE_REGIONS
 417         int
 418         default "256" if PPC64
 419         default "32"
 420
 421 config ARCH_SELECT_MEMORY_MODEL
 422         def_bool y
 423         depends on PPC64
 424
 425 config ARCH_FLATMEM_ENABLE
 426         def_bool y
 427         depends on (PPC64 && !NUMA) || PPC32
 428
 429 config ARCH_SPARSEMEM_ENABLE
 430         def_bool y
 431         depends on PPC64
 432         select SPARSEMEM_VMEMMAP_ENABLE
 433
 434 config ARCH_SPARSEMEM_DEFAULT
 435         def_bool y
 436         depends on (SMP && PPC_PSERIES) || PPC_PS3
 437
 438 config ARCH_POPULATES_NODE_MAP
 439         def_bool y
 440
 441 config SYS_SUPPORTS_HUGETLBFS
 442        def_bool y
 443        depends on PPC_BOOK3S_64
 444
 445 source "mm/Kconfig"
 446
 447 config ARCH_MEMORY_PROBE
 448         def_bool y
 449         depends on MEMORY_HOTPLUG
 450
 451 # Some NUMA nodes have memory ranges that span
 452 # other nodes.  Even though a pfn is valid and
 453 # between a node's start and end pfns, it may not
 454 # reside on that node.  See memmap_init_zone()
 455 # for details.
 456 config NODES_SPAN_OTHER_NODES
 457         def_bool y
 458         depends on NEED_MULTIPLE_NODES
 459
 460 config PPC_HAS_HASH_64K
 461         bool
 462         depends on PPC64
 463         default n
 464
 465 config STDBINUTILS
 466         bool "Using standard binutils settings"
 467         depends on 44x
 468         default y
 469         help
 470           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 471           Note, that kernel will be able to run only those applications,
 472           which had been compiled using binutils later than 2.17.50.0.3 with
 473           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 474           the older binutils, you can patch them with a trivial patch, which
 475           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 476
 477 choice
 478         prompt "Page size"
 479         default PPC_4K_PAGES
 480         help
 481           Select the kernel logical page size. Increasing the page size
 482           will reduce software overhead at each page boundary, allow
 483           hardware prefetch mechanisms to be more effective, and allow
 484           larger dma transfers increasing IO efficiency and reducing
 485           overhead. However the utilization of memory will increase.
 486           For example, each cached file will using a multiple of the
 487           page size to hold its contents and the difference between the
 488           end of file and the end of page is wasted.
 489
 490           Some dedicated systems, such as software raid serving with
 491           accelerated calculations, have shown significant increases.
 492
 493           If you configure a 64 bit kernel for 64k pages but the
 494           processor does not support them, then the kernel will simulate
 495           them with 4k pages, loading them on demand, but with the
 496           reduced software overhead and larger internal fragmentation.
 497           For the 32 bit kernel, a large page option will not be offered
 498           unless it is supported by the configured processor.
 499
 500           If unsure, choose 4K_PAGES.
 501
 502 config PPC_4K_PAGES
 503         bool "4k page size"
 504
 505 config PPC_16K_PAGES
 506         bool "16k page size" if 44x
 507
 508 config PPC_64K_PAGES
 509         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 510         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 511
 512 config PPC_256K_PAGES
 513         bool "256k page size" if 44x
 514         depends on !STDBINUTILS
 515         help
 516           Make the page size 256k.
 517
 518           As the ELF standard only requires alignment to support page
 519           sizes up to 64k, you will need to compile all of your user
 520           space applications with a non-standard binutils settings
 521           (see the STDBINUTILS description for details).
 522
 523           Say N unless you know what you are doing.
 524
 525 endchoice
 526
 527 config FORCE_MAX_ZONEORDER
 528         int "Maximum zone order"
 529         range 9 64 if PPC64 && PPC_64K_PAGES
 530         default "9" if PPC64 && PPC_64K_PAGES
 531         range 13 64 if PPC64 && !PPC_64K_PAGES
 532         default "13" if PPC64 && !PPC_64K_PAGES
 533         range 9 64 if PPC32 && PPC_16K_PAGES
 534         default "9" if PPC32 && PPC_16K_PAGES
 535         range 7 64 if PPC32 && PPC_64K_PAGES
 536         default "7" if PPC32 && PPC_64K_PAGES
 537         range 5 64 if PPC32 && PPC_256K_PAGES
 538         default "5" if PPC32 && PPC_256K_PAGES
 539         range 11 64
 540         default "11"
 541         help
 542           The kernel memory allocator divides physically contiguous memory
 543           blocks into "zones", where each zone is a power of two number of
 544           pages.  This option selects the largest power of two that the kernel
 545           keeps in the memory allocator.  If you need to allocate very large
 546           blocks of physically contiguous memory, then you may need to
 547           increase this value.
 548
 549           This config option is actually maximum order plus one. For example,
 550           a value of 11 means that the largest free memory block is 2^10 pages.
 551
 552           The page size is not necessarily 4KB.  For example, on 64-bit
 553           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 554           this in mind when choosing a value for this option.
 555
 556 config PPC_SUBPAGE_PROT
 557         bool "Support setting protections for 4k subpages"
 558         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 559         help
 560           This option adds support for a system call to allow user programs
 561           to set access permissions (read/write, readonly, or no access)
 562           on the 4k subpages of each 64k page.
 563
 564 config SCHED_SMT
 565         bool "SMT (Hyperthreading) scheduler support"
 566         depends on PPC64 && SMP
 567         help
 568           SMT scheduler support improves the CPU scheduler's decision making
 569           when dealing with POWER5 cpus at a cost of slightly increased
 570           overhead in some places. If unsure say N here.
 571
 572 config CMDLINE_BOOL
 573         bool "Default bootloader kernel arguments"
 574
 575 config CMDLINE
 576         string "Initial kernel command string"
 577         depends on CMDLINE_BOOL
 578         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 579         help
 580           On some platforms, there is currently no way for the boot loader to
 581           pass arguments to the kernel. For these platforms, you can supply
 582           some command-line options at build time by entering them here.  In
 583           most cases you will need to specify the root device here.
 584
 585 config EXTRA_TARGETS
 586         string "Additional default image types"
 587         help
 588           List additional targets to be built by the bootwrapper here (separated
 589           by spaces).  This is useful for targets that depend of device tree
 590           files in the .dts directory.
 591
 592           Targets in this list will be build as part of the default build
 593           target, or when the user does a 'make zImage' or a
 594           'make zImage.initrd'.
 595
 596           If unsure, leave blank
 597
 598 if !44x || BROKEN
 599 config ARCH_WANTS_FREEZER_CONTROL
 600         def_bool y
 601         depends on ADB_PMU
 602
 603 source kernel/power/Kconfig
 604 endif
 605
 606 config SECCOMP
 607         bool "Enable seccomp to safely compute untrusted bytecode"
 608         depends on PROC_FS
 609         default y
 610         help
 611           This kernel feature is useful for number crunching applications
 612           that may need to compute untrusted bytecode during their
 613           execution. By using pipes or other transports made available to
 614           the process as file descriptors supporting the read/write
 615           syscalls, it's possible to isolate those applications in
 616           their own address space using seccomp. Once seccomp is
 617           enabled via /proc/<pid>/seccomp, it cannot be disabled
 618           and the task is only allowed to execute a few safe syscalls
 619           defined by each seccomp mode.
 620
 621           If unsure, say Y. Only embedded should say N here.
 622
 623 endmenu
 624
 625 config ISA_DMA_API
 626         bool
 627         default !PPC_ISERIES || PCI
 628
 629 menu "Bus options"
 630
 631 config ISA
 632         bool "Support for ISA-bus hardware"
 633         depends on PPC_PREP || PPC_CHRP
 634         select PPC_I8259
 635         help
 636           Find out whether you have ISA slots on your motherboard.  ISA is the
 637           name of a bus system, i.e. the way the CPU talks to the other stuff
 638           inside your box.  If you have an Apple machine, say N here; if you
 639           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 640           you have an embedded board, consult your board documentation.
 641
 642 config ZONE_DMA
 643         bool
 644         default y
 645
 646 config NEED_DMA_MAP_STATE
 647         def_bool (PPC64 || NOT_COHERENT_CACHE)
 648
 649 config NEED_SG_DMA_LENGTH
 650         def_bool y
 651
 652 config GENERIC_ISA_DMA
 653         bool
 654         depends on ISA_DMA_API
 655         default y
 656
 657 config PPC_INDIRECT_PCI
 658         bool
 659         depends on PCI
 660         default y if 40x || 44x
 661         default n
 662
 663 config EISA
 664         bool
 665
 666 config SBUS
 667         bool
 668
 669 config FSL_SOC
 670         bool
 671
 672 config FSL_PCI
 673         bool
 674         select PPC_INDIRECT_PCI
 675         select PCI_QUIRKS
 676
 677 config FSL_PMC
 678         bool
 679         default y
 680         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 681         help
 682           Freescale MPC85xx/MPC86xx power management controller support
 683           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 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 choice
 751         prompt "IDMA channel for PCI 9 workaround"
 752         depends on 8260_PCI9
 753
 754 config 8260_PCI9_IDMA1
 755         bool "IDMA1"
 756
 757 config 8260_PCI9_IDMA2
 758         bool "IDMA2"
 759
 760 config 8260_PCI9_IDMA3
 761         bool "IDMA3"
 762
 763 config 8260_PCI9_IDMA4
 764         bool "IDMA4"
 765
 766 endchoice
 767
 768 source "drivers/pci/pcie/Kconfig"
 769
 770 source "drivers/pci/Kconfig"
 771
 772 source "drivers/pcmcia/Kconfig"
 773
 774 source "drivers/pci/hotplug/Kconfig"
 775
 776 config HAS_RAPIDIO
 777         bool
 778         default n
 779
 780 config RAPIDIO
 781         bool "RapidIO support"
 782         depends on HAS_RAPIDIO
 783         help
 784           If you say Y here, the kernel will include drivers and
 785           infrastructure code to support RapidIO interconnect devices.
 786
 787 source "drivers/rapidio/Kconfig"
 788
 789 endmenu
 790
 791 menu "Advanced setup"
 792         depends on PPC32
 793
 794 config ADVANCED_OPTIONS
 795         bool "Prompt for advanced kernel configuration options"
 796         help
 797           This option will enable prompting for a variety of advanced kernel
 798           configuration options.  These options can cause the kernel to not
 799           work if they are set incorrectly, but can be used to optimize certain
 800           aspects of kernel memory management.
 801
 802           Unless you know what you are doing, say N here.
 803
 804 comment "Default settings for advanced configuration options are used"
 805         depends on !ADVANCED_OPTIONS
 806
 807 config LOWMEM_SIZE_BOOL
 808         bool "Set maximum low memory"
 809         depends on ADVANCED_OPTIONS
 810         help
 811           This option allows you to set the maximum amount of memory which
 812           will be used as "low memory", that is, memory which the kernel can
 813           access directly, without having to set up a kernel virtual mapping.
 814           This can be useful in optimizing the layout of kernel virtual
 815           memory.
 816
 817           Say N here unless you know what you are doing.
 818
 819 config LOWMEM_SIZE
 820         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 821         default "0x30000000"
 822
 823 config LOWMEM_CAM_NUM_BOOL
 824         bool "Set number of CAMs to use to map low memory"
 825         depends on ADVANCED_OPTIONS && FSL_BOOKE
 826         help
 827           This option allows you to set the maximum number of CAM slots that
 828           will be used to map low memory.  There are a limited number of slots
 829           available and even more limited number that will fit in the L1 MMU.
 830           However, using more entries will allow mapping more low memory.  This
 831           can be useful in optimizing the layout of kernel virtual memory.
 832
 833           Say N here unless you know what you are doing.
 834
 835 config LOWMEM_CAM_NUM
 836         depends on FSL_BOOKE
 837         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 838         default 3
 839
 840 config RELOCATABLE
 841         bool "Build a relocatable kernel (EXPERIMENTAL)"
 842         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 843         help
 844           This builds a kernel image that is capable of running at the
 845           location the kernel is loaded at (some alignment restrictions may
 846           exist).
 847
 848           One use is for the kexec on panic case where the recovery kernel
 849           must live at a different physical address than the primary
 850           kernel.
 851
 852           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 853           it has been loaded at and the compile time physical addresses
 854           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 855           setting can still be useful to bootwrappers that need to know the
 856           load location of the kernel (eg. u-boot/mkimage).
 857
 858 config PAGE_OFFSET_BOOL
 859         bool "Set custom page offset address"
 860         depends on ADVANCED_OPTIONS
 861         help
 862           This option allows you to set the kernel virtual address at which
 863           the kernel will map low memory.  This can be useful in optimizing
 864           the virtual memory layout of the system.
 865
 866           Say N here unless you know what you are doing.
 867
 868 config PAGE_OFFSET
 869         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 870         default "0xc0000000"
 871
 872 config KERNEL_START_BOOL
 873         bool "Set custom kernel base address"
 874         depends on ADVANCED_OPTIONS
 875         help
 876           This option allows you to set the kernel virtual address at which
 877           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 878           however there are times (like kdump) that one might not want them
 879           to be the same.
 880
 881           Say N here unless you know what you are doing.
 882
 883 config KERNEL_START
 884         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 885         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 886         default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
 887         default "0xc0000000"
 888
 889 config PHYSICAL_START_BOOL
 890         bool "Set physical address where the kernel is loaded"
 891         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 892         help
 893           This gives the physical address where the kernel is loaded.
 894
 895           Say N here unless you know what you are doing.
 896
 897 config PHYSICAL_START
 898         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 899         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
 900         default "0x00000000"
 901
 902 config PHYSICAL_ALIGN
 903         hex
 904         default "0x04000000" if FSL_BOOKE
 905         help
 906           This value puts the alignment restrictions on physical address
 907           where kernel is loaded and run from. Kernel is compiled for an
 908           address which meets above alignment restriction.
 909
 910 config TASK_SIZE_BOOL
 911         bool "Set custom user task size"
 912         depends on ADVANCED_OPTIONS
 913         help
 914           This option allows you to set the amount of virtual address space
 915           allocated to user tasks.  This can be useful in optimizing the
 916           virtual memory layout of the system.
 917
 918           Say N here unless you know what you are doing.
 919
 920 config TASK_SIZE
 921         hex "Size of user task space" if TASK_SIZE_BOOL
 922         default "0x80000000" if PPC_PREP || PPC_8xx
 923         default "0xc0000000"
 924
 925 config CONSISTENT_SIZE_BOOL
 926         bool "Set custom consistent memory pool size"
 927         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 928         help
 929           This option allows you to set the size of the
 930           consistent memory pool.  This pool of virtual memory
 931           is used to make consistent memory allocations.
 932
 933 config CONSISTENT_SIZE
 934         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 935         default "0x00200000" if NOT_COHERENT_CACHE
 936
 937 config PIN_TLB
 938         bool "Pinned Kernel TLBs (860 ONLY)"
 939         depends on ADVANCED_OPTIONS && 8xx
 940 endmenu
 941
 942 if PPC64
 943 config RELOCATABLE
 944         bool "Build a relocatable kernel"
 945         help
 946           This builds a kernel image that is capable of running anywhere
 947           in the RMA (real memory area) at any 16k-aligned base address.
 948           The kernel is linked as a position-independent executable (PIE)
 949           and contains dynamic relocations which are processed early
 950           in the bootup process.
 951
 952           One use is for the kexec on panic case where the recovery kernel
 953           must live at a different physical address than the primary
 954           kernel.
 955
 956 config PAGE_OFFSET
 957         hex
 958         default "0xc000000000000000"
 959 config KERNEL_START
 960         hex
 961         default "0xc000000000000000"
 962 config PHYSICAL_START
 963         hex
 964         default "0x00000000"
 965 endif
 966
 967 source "net/Kconfig"
 968
 969 source "drivers/Kconfig"
 970
 971 source "fs/Kconfig"
 972
 973 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 974
 975 source "lib/Kconfig"
 976
 977 source "arch/powerpc/Kconfig.debug"
 978
 979 source "security/Kconfig"
 980
 981 config KEYS_COMPAT
 982         bool
 983         depends on COMPAT && KEYS
 984         default y
 985
 986 source "crypto/Kconfig"
 987
 988 config PPC_CLOCK
 989         bool
 990         default n
 991         select HAVE_CLK
 992
 993 config PPC_LIB_RHEAP
 994         bool
 995
 996 source "arch/powerpc/kvm/Kconfig"