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