arch/powerpc/Kconfig

   1 # For a description of the syntax of this configuration file,
   2 # see Documentation/kbuild/kconfig-language.txt.
   3 #
   4
   5 mainmenu "Linux/PowerPC Kernel Configuration"
   6
   7 source "arch/powerpc/platforms/Kconfig.cputype"
   8
   9 config PPC32
  10         bool
  11         default y if !PPC64
  12
  13 config 64BIT
  14         bool
  15         default y if PPC64
  16
  17 config WORD_SIZE
  18         int
  19         default 64 if PPC64
  20         default 32 if !PPC64
  21
  22 config ARCH_PHYS_ADDR_T_64BIT
  23        def_bool PPC64 || PHYS_64BIT
  24
  25 config MMU
  26         bool
  27         default y
  28
  29 config GENERIC_CMOS_UPDATE
  30         def_bool y
  31
  32 config GENERIC_TIME
  33         def_bool y
  34
  35 config GENERIC_TIME_VSYSCALL
  36         def_bool y
  37
  38 config GENERIC_CLOCKEVENTS
  39         def_bool y
  40
  41 config GENERIC_HARDIRQS
  42         bool
  43         default y
  44
  45 config GENERIC_HARDIRQS_NO__DO_IRQ
  46         bool
  47         default y
  48
  49 config HAVE_SETUP_PER_CPU_AREA
  50         def_bool PPC64
  51
  52 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  53         def_bool PPC64
  54
  55 config IRQ_PER_CPU
  56         bool
  57         default y
  58
  59 config NR_IRQS
  60         int "Number of virtual interrupt numbers"
  61         range 32 32768
  62         default "512"
  63         help
  64           This defines the number of virtual interrupt numbers the kernel
  65           can manage. Virtual interrupt numbers are what you see in
  66           /proc/interrupts. If you configure your system to have too few,
  67           drivers will fail to load or worse - handle with care.
  68
  69 config STACKTRACE_SUPPORT
  70         bool
  71         default y
  72
  73 config HAVE_LATENCYTOP_SUPPORT
  74         def_bool y
  75
  76 config TRACE_IRQFLAGS_SUPPORT
  77         bool
  78         default y
  79
  80 config LOCKDEP_SUPPORT
  81         bool
  82         default y
  83
  84 config RWSEM_GENERIC_SPINLOCK
  85         bool
  86
  87 config RWSEM_XCHGADD_ALGORITHM
  88         bool
  89         default y
  90
  91 config GENERIC_LOCKBREAK
  92         bool
  93         default y
  94         depends on SMP && PREEMPT
  95
  96 config ARCH_HAS_ILOG2_U32
  97         bool
  98         default y
  99
 100 config ARCH_HAS_ILOG2_U64
 101         bool
 102         default y if 64BIT
 103
 104 config GENERIC_HWEIGHT
 105         bool
 106         default y
 107
 108 config GENERIC_FIND_NEXT_BIT
 109         bool
 110         default y
 111
 112 config GENERIC_GPIO
 113         bool
 114         help
 115           Generic GPIO API support
 116
 117 config ARCH_NO_VIRT_TO_BUS
 118         def_bool PPC64
 119
 120 config PPC
 121         bool
 122         default y
 123         select HAVE_FTRACE_MCOUNT_RECORD
 124         select HAVE_DYNAMIC_FTRACE
 125         select HAVE_FUNCTION_TRACER
 126         select HAVE_FUNCTION_GRAPH_TRACER
 127         select ARCH_WANT_OPTIONAL_GPIOLIB
 128         select HAVE_IDE
 129         select HAVE_IOREMAP_PROT
 130         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 131         select HAVE_KPROBES
 132         select HAVE_ARCH_KGDB
 133         select HAVE_KRETPROBES
 134         select HAVE_ARCH_TRACEHOOK
 135         select HAVE_LMB
 136         select HAVE_DMA_ATTRS
 137         select HAVE_DMA_API_DEBUG
 138         select USE_GENERIC_SMP_HELPERS if SMP
 139         select HAVE_OPROFILE
 140         select HAVE_SYSCALL_WRAPPERS if PPC64
 141         select GENERIC_ATOMIC64 if PPC32
 142         select HAVE_PERF_EVENTS
 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 OF
 175         def_bool y
 176         select OF_FLATTREE
 177
 178 config PPC_UDBG_16550
 179         bool
 180         default n
 181
 182 config GENERIC_TBSYNC
 183         bool
 184         default y if PPC32 && SMP
 185         default n
 186
 187 config AUDIT_ARCH
 188         bool
 189         default y
 190
 191 config GENERIC_BUG
 192         bool
 193         default y
 194         depends on BUG
 195
 196 config SYS_SUPPORTS_APM_EMULATION
 197         default y if PMAC_APM_EMU
 198         bool
 199
 200 config DTC
 201        bool
 202        default y
 203
 204 config DEFAULT_UIMAGE
 205         bool
 206         help
 207           Used to allow a board to specify it wants a uImage built by default
 208         default n
 209
 210 config REDBOOT
 211         bool
 212
 213 config ARCH_HIBERNATION_POSSIBLE
 214         bool
 215         default y
 216
 217 config ARCH_SUSPEND_POSSIBLE
 218         def_bool y
 219         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 220                    PPC_85xx || PPC_86xx
 221
 222 config PPC_DCR_NATIVE
 223         bool
 224         default n
 225
 226 config PPC_DCR_MMIO
 227         bool
 228         default n
 229
 230 config PPC_DCR
 231         bool
 232         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 233         default y
 234
 235 config PPC_OF_PLATFORM_PCI
 236         bool
 237         depends on PCI
 238         depends on PPC64 # not supported on 32 bits yet
 239         default n
 240
 241 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 242         def_bool y
 243
 244 config PPC_ADV_DEBUG_REGS
 245         bool
 246         depends on 40x || BOOKE
 247         default y
 248
 249 config PPC_ADV_DEBUG_IACS
 250         int
 251         depends on PPC_ADV_DEBUG_REGS
 252         default 4 if 44x
 253         default 2
 254
 255 config PPC_ADV_DEBUG_DACS
 256         int
 257         depends on PPC_ADV_DEBUG_REGS
 258         default 2
 259
 260 config PPC_ADV_DEBUG_DVCS
 261         int
 262         depends on PPC_ADV_DEBUG_REGS
 263         default 2 if 44x
 264         default 0
 265
 266 config PPC_ADV_DEBUG_DAC_RANGE
 267         bool
 268         depends on PPC_ADV_DEBUG_REGS && 44x
 269         default y
 270
 271 source "init/Kconfig"
 272
 273 source "kernel/Kconfig.freezer"
 274
 275 source "arch/powerpc/sysdev/Kconfig"
 276 source "arch/powerpc/platforms/Kconfig"
 277
 278 menu "Kernel options"
 279
 280 config HIGHMEM
 281         bool "High memory support"
 282         depends on PPC32
 283
 284 source kernel/time/Kconfig
 285 source kernel/Kconfig.hz
 286 source kernel/Kconfig.preempt
 287 source "fs/Kconfig.binfmt"
 288
 289 config HUGETLB_PAGE_SIZE_VARIABLE
 290         bool
 291         depends on HUGETLB_PAGE
 292         default y
 293
 294 config MATH_EMULATION
 295         bool "Math emulation"
 296         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 297         ---help---
 298           Some PowerPC chips designed for embedded applications do not have
 299           a floating-point unit and therefore do not implement the
 300           floating-point instructions in the PowerPC instruction set.  If you
 301           say Y here, the kernel will include code to emulate a floating-point
 302           unit, which will allow programs that use floating-point
 303           instructions to run.
 304
 305 config 8XX_MINIMAL_FPEMU
 306         bool "Minimal math emulation for 8xx"
 307         depends on 8xx && !MATH_EMULATION
 308         help
 309           Older arch/ppc kernels still emulated a few floating point
 310           instructions such as load and store, even when full math
 311           emulation is disabled.  Say "Y" here if you want to preserve
 312           this behavior.
 313
 314           It is recommended that you build a soft-float userspace instead.
 315
 316 config IOMMU_HELPER
 317         def_bool PPC64
 318
 319 config SWIOTLB
 320         bool "SWIOTLB support"
 321         default n
 322         select IOMMU_HELPER
 323         ---help---
 324           Support for IO bounce buffering for systems without an IOMMU.
 325           This allows us to DMA to the full physical address space on
 326           platforms where the size of a physical address is larger
 327           than the bus address.  Not all platforms support this.
 328
 329 config HOTPLUG_CPU
 330         bool "Support for enabling/disabling CPUs"
 331         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 332         ---help---
 333           Say Y here to be able to disable and re-enable individual
 334           CPUs at runtime on SMP machines.
 335
 336           Say N if you are unsure.
 337
 338 config ARCH_CPU_PROBE_RELEASE
 339         def_bool y
 340         depends on HOTPLUG_CPU
 341
 342 config ARCH_ENABLE_MEMORY_HOTPLUG
 343         def_bool y
 344
 345 config ARCH_HAS_WALK_MEMORY
 346         def_bool y
 347
 348 config ARCH_ENABLE_MEMORY_HOTREMOVE
 349         def_bool y
 350
 351 config KEXEC
 352         bool "kexec system call (EXPERIMENTAL)"
 353         depends on PPC_BOOK3S && EXPERIMENTAL
 354         help
 355           kexec is a system call that implements the ability to shutdown your
 356           current kernel, and to start another kernel.  It is like a reboot
 357           but it is independent of the system firmware.   And like a reboot
 358           you can start any kernel with it, not just Linux.
 359
 360           The name comes from the similarity to the exec system call.
 361
 362           It is an ongoing process to be certain the hardware in a machine
 363           is properly shutdown, so do not be surprised if this code does not
 364           initially work for you.  It may help to enable device hotplugging
 365           support.  As of this writing the exact hardware interface is
 366           strongly in flux, so no good recommendation can be made.
 367
 368 config CRASH_DUMP
 369         bool "Build a kdump crash kernel"
 370         depends on PPC64 || 6xx
 371         select RELOCATABLE if PPC64
 372         help
 373           Build a kernel suitable for use as a kdump capture kernel.
 374           The same kernel binary can be used as production kernel and dump
 375           capture kernel.
 376
 377 config PHYP_DUMP
 378         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 379         depends on PPC_PSERIES && EXPERIMENTAL
 380         help
 381           Hypervisor-assisted dump is meant to be a kdump replacement
 382           offering robustness and speed not possible without system
 383           hypervisor assistance.
 384
 385           If unsure, say "N"
 386
 387 config PPCBUG_NVRAM
 388         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 389         default y if PPC_PREP
 390
 391 config IRQ_ALL_CPUS
 392         bool "Distribute interrupts on all CPUs by default"
 393         depends on SMP && !MV64360
 394         help
 395           This option gives the kernel permission to distribute IRQs across
 396           multiple CPUs.  Saying N here will route all IRQs to the first
 397           CPU.  Generally saying Y is safe, although some problems have been
 398           reported with SMP Power Macintoshes with this option enabled.
 399
 400 config SPARSE_IRQ
 401         bool "Support sparse irq numbering"
 402         default y
 403         help
 404           This enables support for sparse irqs. This is useful for distro
 405           kernels that want to define a high CONFIG_NR_CPUS value but still
 406           want to have low kernel memory footprint on smaller machines.
 407
 408           ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
 409             out the irq_desc[] array in a more NUMA-friendly way. )
 410
 411           If you don't know what to do here, say Y.
 412
 413 config NUMA
 414         bool "NUMA support"
 415         depends on PPC64
 416         default y if SMP && PPC_PSERIES
 417
 418 config NODES_SHIFT
 419         int
 420         default "8" if PPC64
 421         default "4"
 422         depends on NEED_MULTIPLE_NODES
 423
 424 config MAX_ACTIVE_REGIONS
 425         int
 426         default "256" if PPC64
 427         default "32"
 428
 429 config ARCH_SELECT_MEMORY_MODEL
 430         def_bool y
 431         depends on PPC64
 432
 433 config ARCH_FLATMEM_ENABLE
 434         def_bool y
 435         depends on (PPC64 && !NUMA) || PPC32
 436
 437 config ARCH_SPARSEMEM_ENABLE
 438         def_bool y
 439         depends on PPC64
 440         select SPARSEMEM_VMEMMAP_ENABLE
 441
 442 config ARCH_SPARSEMEM_DEFAULT
 443         def_bool y
 444         depends on (SMP && PPC_PSERIES) || PPC_PS3
 445
 446 config ARCH_POPULATES_NODE_MAP
 447         def_bool y
 448
 449 config SYS_SUPPORTS_HUGETLBFS
 450        def_bool y
 451        depends on PPC_BOOK3S_64
 452
 453 source "mm/Kconfig"
 454
 455 config ARCH_MEMORY_PROBE
 456         def_bool y
 457         depends on MEMORY_HOTPLUG
 458
 459 # Some NUMA nodes have memory ranges that span
 460 # other nodes.  Even though a pfn is valid and
 461 # between a node's start and end pfns, it may not
 462 # reside on that node.  See memmap_init_zone()
 463 # for details.
 464 config NODES_SPAN_OTHER_NODES
 465         def_bool y
 466         depends on NEED_MULTIPLE_NODES
 467
 468 config PPC_HAS_HASH_64K
 469         bool
 470         depends on PPC64
 471         default n
 472
 473 config STDBINUTILS
 474         bool "Using standard binutils settings"
 475         depends on 44x
 476         default y
 477         help
 478           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 479           Note, that kernel will be able to run only those applications,
 480           which had been compiled using binutils later than 2.17.50.0.3 with
 481           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 482           the older binutils, you can patch them with a trivial patch, which
 483           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 484
 485 choice
 486         prompt "Page size"
 487         default PPC_4K_PAGES
 488         help
 489           Select the kernel logical page size. Increasing the page size
 490           will reduce software overhead at each page boundary, allow
 491           hardware prefetch mechanisms to be more effective, and allow
 492           larger dma transfers increasing IO efficiency and reducing
 493           overhead. However the utilization of memory will increase.
 494           For example, each cached file will using a multiple of the
 495           page size to hold its contents and the difference between the
 496           end of file and the end of page is wasted.
 497
 498           Some dedicated systems, such as software raid serving with
 499           accelerated calculations, have shown significant increases.
 500
 501           If you configure a 64 bit kernel for 64k pages but the
 502           processor does not support them, then the kernel will simulate
 503           them with 4k pages, loading them on demand, but with the
 504           reduced software overhead and larger internal fragmentation.
 505           For the 32 bit kernel, a large page option will not be offered
 506           unless it is supported by the configured processor.
 507
 508           If unsure, choose 4K_PAGES.
 509
 510 config PPC_4K_PAGES
 511         bool "4k page size"
 512
 513 config PPC_16K_PAGES
 514         bool "16k page size" if 44x
 515
 516 config PPC_64K_PAGES
 517         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 518         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 519
 520 config PPC_256K_PAGES
 521         bool "256k page size" if 44x
 522         depends on !STDBINUTILS
 523         help
 524           Make the page size 256k.
 525
 526           As the ELF standard only requires alignment to support page
 527           sizes up to 64k, you will need to compile all of your user
 528           space applications with a non-standard binutils settings
 529           (see the STDBINUTILS description for details).
 530
 531           Say N unless you know what you are doing.
 532
 533 endchoice
 534
 535 config FORCE_MAX_ZONEORDER
 536         int "Maximum zone order"
 537         range 9 64 if PPC64 && PPC_64K_PAGES
 538         default "9" if PPC64 && PPC_64K_PAGES
 539         range 13 64 if PPC64 && !PPC_64K_PAGES
 540         default "13" if PPC64 && !PPC_64K_PAGES
 541         range 9 64 if PPC32 && PPC_16K_PAGES
 542         default "9" if PPC32 && PPC_16K_PAGES
 543         range 7 64 if PPC32 && PPC_64K_PAGES
 544         default "7" if PPC32 && PPC_64K_PAGES
 545         range 5 64 if PPC32 && PPC_256K_PAGES
 546         default "5" if PPC32 && PPC_256K_PAGES
 547         range 11 64
 548         default "11"
 549         help
 550           The kernel memory allocator divides physically contiguous memory
 551           blocks into "zones", where each zone is a power of two number of
 552           pages.  This option selects the largest power of two that the kernel
 553           keeps in the memory allocator.  If you need to allocate very large
 554           blocks of physically contiguous memory, then you may need to
 555           increase this value.
 556
 557           This config option is actually maximum order plus one. For example,
 558           a value of 11 means that the largest free memory block is 2^10 pages.
 559
 560           The page size is not necessarily 4KB.  For example, on 64-bit
 561           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 562           this in mind when choosing a value for this option.
 563
 564 config PPC_SUBPAGE_PROT
 565         bool "Support setting protections for 4k subpages"
 566         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 567         help
 568           This option adds support for a system call to allow user programs
 569           to set access permissions (read/write, readonly, or no access)
 570           on the 4k subpages of each 64k page.
 571
 572 config SCHED_SMT
 573         bool "SMT (Hyperthreading) scheduler support"
 574         depends on PPC64 && SMP
 575         help
 576           SMT scheduler support improves the CPU scheduler's decision making
 577           when dealing with POWER5 cpus at a cost of slightly increased
 578           overhead in some places. If unsure say N here.
 579
 580 config PROC_DEVICETREE
 581         bool "Support for device tree in /proc"
 582         depends on PROC_FS
 583         help
 584           This option adds a device-tree directory under /proc which contains
 585           an image of the device tree that the kernel copies from Open
 586           Firmware or other boot firmware. If unsure, say Y here.
 587
 588 config CMDLINE_BOOL
 589         bool "Default bootloader kernel arguments"
 590
 591 config CMDLINE
 592         string "Initial kernel command string"
 593         depends on CMDLINE_BOOL
 594         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 595         help
 596           On some platforms, there is currently no way for the boot loader to
 597           pass arguments to the kernel. For these platforms, you can supply
 598           some command-line options at build time by entering them here.  In
 599           most cases you will need to specify the root device here.
 600
 601 config EXTRA_TARGETS
 602         string "Additional default image types"
 603         help
 604           List additional targets to be built by the bootwrapper here (separated
 605           by spaces).  This is useful for targets that depend of device tree
 606           files in the .dts directory.
 607
 608           Targets in this list will be build as part of the default build
 609           target, or when the user does a 'make zImage' or a
 610           'make zImage.initrd'.
 611
 612           If unsure, leave blank
 613
 614 if !44x || BROKEN
 615 config ARCH_WANTS_FREEZER_CONTROL
 616         def_bool y
 617         depends on ADB_PMU
 618
 619 source kernel/power/Kconfig
 620 endif
 621
 622 config SECCOMP
 623         bool "Enable seccomp to safely compute untrusted bytecode"
 624         depends on PROC_FS
 625         default y
 626         help
 627           This kernel feature is useful for number crunching applications
 628           that may need to compute untrusted bytecode during their
 629           execution. By using pipes or other transports made available to
 630           the process as file descriptors supporting the read/write
 631           syscalls, it's possible to isolate those applications in
 632           their own address space using seccomp. Once seccomp is
 633           enabled via /proc/<pid>/seccomp, it cannot be disabled
 634           and the task is only allowed to execute a few safe syscalls
 635           defined by each seccomp mode.
 636
 637           If unsure, say Y. Only embedded should say N here.
 638
 639 endmenu
 640
 641 config ISA_DMA_API
 642         bool
 643         default !PPC_ISERIES || PCI
 644
 645 menu "Bus options"
 646
 647 config ISA
 648         bool "Support for ISA-bus hardware"
 649         depends on PPC_PREP || PPC_CHRP
 650         select PPC_I8259
 651         help
 652           Find out whether you have ISA slots on your motherboard.  ISA is the
 653           name of a bus system, i.e. the way the CPU talks to the other stuff
 654           inside your box.  If you have an Apple machine, say N here; if you
 655           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 656           you have an embedded board, consult your board documentation.
 657
 658 config ZONE_DMA
 659         bool
 660         default y
 661
 662 config NEED_DMA_MAP_STATE
 663         def_bool (PPC64 || NOT_COHERENT_CACHE)
 664
 665 config GENERIC_ISA_DMA
 666         bool
 667         depends on PPC64 || POWER4 || 6xx && !CPM2
 668         default y
 669
 670 config PPC_INDIRECT_PCI
 671         bool
 672         depends on PCI
 673         default y if 40x || 44x
 674         default n
 675
 676 config EISA
 677         bool
 678
 679 config SBUS
 680         bool
 681
 682 config FSL_SOC
 683         bool
 684
 685 config FSL_PCI
 686         bool
 687         select PPC_INDIRECT_PCI
 688         select PCI_QUIRKS
 689
 690 config FSL_PMC
 691         bool
 692         default y
 693         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 694         help
 695           Freescale MPC85xx/MPC86xx power management controller support
 696           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 697
 698 config 4xx_SOC
 699         bool
 700
 701 config FSL_LBC
 702         bool
 703         help
 704           Freescale Localbus support
 705
 706 config FSL_GTM
 707         bool
 708         depends on PPC_83xx || QUICC_ENGINE || CPM2
 709         help
 710           Freescale General-purpose Timers support
 711
 712 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 713 config MCA
 714         bool
 715
 716 # Platforms that what PCI turned unconditionally just do select PCI
 717 # in their config node.  Platforms that want to choose at config
 718 # time should select PPC_PCI_CHOICE
 719 config PPC_PCI_CHOICE
 720         bool
 721
 722 config PCI
 723         bool "PCI support" if PPC_PCI_CHOICE
 724         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 725                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 726         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 727         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 728         select ARCH_SUPPORTS_MSI
 729         help
 730           Find out whether your system includes a PCI bus. PCI is the name of
 731           a bus system, i.e. the way the CPU talks to the other stuff inside
 732           your box.  If you say Y here, the kernel will include drivers and
 733           infrastructure code to support PCI bus devices.
 734
 735 config PCI_DOMAINS
 736         def_bool PCI
 737
 738 config PCI_SYSCALL
 739         def_bool PCI
 740
 741 config PCI_QSPAN
 742         bool "QSpan PCI"
 743         depends on !4xx && !CPM2 && 8xx
 744         select PPC_I8259
 745         help
 746           Say Y here if you have a system based on a Motorola 8xx-series
 747           embedded processor with a QSPAN PCI interface, otherwise say N.
 748
 749 config PCI_8260
 750         bool
 751         depends on PCI && 8260
 752         select PPC_INDIRECT_PCI
 753         default y
 754
 755 config 8260_PCI9
 756         bool "Enable workaround for MPC826x erratum PCI 9"
 757         depends on PCI_8260 && !8272
 758         default y
 759
 760 choice
 761         prompt "IDMA channel for PCI 9 workaround"
 762         depends on 8260_PCI9
 763
 764 config 8260_PCI9_IDMA1
 765         bool "IDMA1"
 766
 767 config 8260_PCI9_IDMA2
 768         bool "IDMA2"
 769
 770 config 8260_PCI9_IDMA3
 771         bool "IDMA3"
 772
 773 config 8260_PCI9_IDMA4
 774         bool "IDMA4"
 775
 776 endchoice
 777
 778 source "drivers/pci/pcie/Kconfig"
 779
 780 source "drivers/pci/Kconfig"
 781
 782 source "drivers/pcmcia/Kconfig"
 783
 784 source "drivers/pci/hotplug/Kconfig"
 785
 786 config HAS_RAPIDIO
 787         bool
 788         default n
 789
 790 config RAPIDIO
 791         bool "RapidIO support"
 792         depends on HAS_RAPIDIO
 793         help
 794           If you say Y here, the kernel will include drivers and
 795           infrastructure code to support RapidIO interconnect devices.
 796
 797 source "drivers/rapidio/Kconfig"
 798
 799 endmenu
 800
 801 menu "Advanced setup"
 802         depends on PPC32
 803
 804 config ADVANCED_OPTIONS
 805         bool "Prompt for advanced kernel configuration options"
 806         help
 807           This option will enable prompting for a variety of advanced kernel
 808           configuration options.  These options can cause the kernel to not
 809           work if they are set incorrectly, but can be used to optimize certain
 810           aspects of kernel memory management.
 811
 812           Unless you know what you are doing, say N here.
 813
 814 comment "Default settings for advanced configuration options are used"
 815         depends on !ADVANCED_OPTIONS
 816
 817 config LOWMEM_SIZE_BOOL
 818         bool "Set maximum low memory"
 819         depends on ADVANCED_OPTIONS
 820         help
 821           This option allows you to set the maximum amount of memory which
 822           will be used as "low memory", that is, memory which the kernel can
 823           access directly, without having to set up a kernel virtual mapping.
 824           This can be useful in optimizing the layout of kernel virtual
 825           memory.
 826
 827           Say N here unless you know what you are doing.
 828
 829 config LOWMEM_SIZE
 830         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 831         default "0x30000000"
 832
 833 config LOWMEM_CAM_NUM_BOOL
 834         bool "Set number of CAMs to use to map low memory"
 835         depends on ADVANCED_OPTIONS && FSL_BOOKE
 836         help
 837           This option allows you to set the maximum number of CAM slots that
 838           will be used to map low memory.  There are a limited number of slots
 839           available and even more limited number that will fit in the L1 MMU.
 840           However, using more entries will allow mapping more low memory.  This
 841           can be useful in optimizing the layout of kernel virtual memory.
 842
 843           Say N here unless you know what you are doing.
 844
 845 config LOWMEM_CAM_NUM
 846         depends on FSL_BOOKE
 847         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 848         default 3
 849
 850 config RELOCATABLE
 851         bool "Build a relocatable kernel (EXPERIMENTAL)"
 852         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 853         help
 854           This builds a kernel image that is capable of running at the
 855           location the kernel is loaded at (some alignment restrictions may
 856           exist).
 857
 858           One use is for the kexec on panic case where the recovery kernel
 859           must live at a different physical address than the primary
 860           kernel.
 861
 862           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 863           it has been loaded at and the compile time physical addresses
 864           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 865           setting can still be useful to bootwrappers that need to know the
 866           load location of the kernel (eg. u-boot/mkimage).
 867
 868 config PAGE_OFFSET_BOOL
 869         bool "Set custom page offset address"
 870         depends on ADVANCED_OPTIONS
 871         help
 872           This option allows you to set the kernel virtual address at which
 873           the kernel will map low memory.  This can be useful in optimizing
 874           the virtual memory layout of the system.
 875
 876           Say N here unless you know what you are doing.
 877
 878 config PAGE_OFFSET
 879         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 880         default "0xc0000000"
 881
 882 config KERNEL_START_BOOL
 883         bool "Set custom kernel base address"
 884         depends on ADVANCED_OPTIONS
 885         help
 886           This option allows you to set the kernel virtual address at which
 887           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 888           however there are times (like kdump) that one might not want them
 889           to be the same.
 890
 891           Say N here unless you know what you are doing.
 892
 893 config KERNEL_START
 894         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 895         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 896         default "0xc2000000" if CRASH_DUMP
 897         default "0xc0000000"
 898
 899 config PHYSICAL_START_BOOL
 900         bool "Set physical address where the kernel is loaded"
 901         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 902         help
 903           This gives the physical address where the kernel is loaded.
 904
 905           Say N here unless you know what you are doing.
 906
 907 config PHYSICAL_START
 908         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 909         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
 910         default "0x00000000"
 911
 912 config PHYSICAL_ALIGN
 913         hex
 914         default "0x04000000" if FSL_BOOKE
 915         help
 916           This value puts the alignment restrictions on physical address
 917           where kernel is loaded and run from. Kernel is compiled for an
 918           address which meets above alignment restriction.
 919
 920 config TASK_SIZE_BOOL
 921         bool "Set custom user task size"
 922         depends on ADVANCED_OPTIONS
 923         help
 924           This option allows you to set the amount of virtual address space
 925           allocated to user tasks.  This can be useful in optimizing the
 926           virtual memory layout of the system.
 927
 928           Say N here unless you know what you are doing.
 929
 930 config TASK_SIZE
 931         hex "Size of user task space" if TASK_SIZE_BOOL
 932         default "0x80000000" if PPC_PREP || PPC_8xx
 933         default "0xc0000000"
 934
 935 config CONSISTENT_SIZE_BOOL
 936         bool "Set custom consistent memory pool size"
 937         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 938         help
 939           This option allows you to set the size of the
 940           consistent memory pool.  This pool of virtual memory
 941           is used to make consistent memory allocations.
 942
 943 config CONSISTENT_SIZE
 944         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 945         default "0x00200000" if NOT_COHERENT_CACHE
 946
 947 config PIN_TLB
 948         bool "Pinned Kernel TLBs (860 ONLY)"
 949         depends on ADVANCED_OPTIONS && 8xx
 950 endmenu
 951
 952 if PPC64
 953 config RELOCATABLE
 954         bool "Build a relocatable kernel"
 955         help
 956           This builds a kernel image that is capable of running anywhere
 957           in the RMA (real memory area) at any 16k-aligned base address.
 958           The kernel is linked as a position-independent executable (PIE)
 959           and contains dynamic relocations which are processed early
 960           in the bootup process.
 961
 962           One use is for the kexec on panic case where the recovery kernel
 963           must live at a different physical address than the primary
 964           kernel.
 965
 966 config PAGE_OFFSET
 967         hex
 968         default "0xc000000000000000"
 969 config KERNEL_START
 970         hex
 971         default "0xc000000000000000"
 972 config PHYSICAL_START
 973         hex
 974         default "0x00000000"
 975 endif
 976
 977 source "net/Kconfig"
 978
 979 source "drivers/Kconfig"
 980
 981 source "fs/Kconfig"
 982
 983 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 984
 985 source "lib/Kconfig"
 986
 987 source "arch/powerpc/Kconfig.debug"
 988
 989 source "security/Kconfig"
 990
 991 config KEYS_COMPAT
 992         bool
 993         depends on COMPAT && KEYS
 994         default y
 995
 996 source "crypto/Kconfig"
 997
 998 config PPC_CLOCK
 999         bool
1000         default n
1001         select HAVE_CLK
1002
1003 config PPC_LIB_RHEAP
1004         bool
1005
1006 source "arch/powerpc/kvm/Kconfig"