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