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_VMERGE
 317         bool "Enable IOMMU virtual merging"
 318         depends on PPC64
 319         default y
 320         help
 321           Cause IO segments sent to a device for DMA to be merged virtually
 322           by the IOMMU when they happen to have been allocated contiguously.
 323           This doesn't add pressure to the IOMMU allocator. However, some
 324           drivers don't support getting large merged segments coming back
 325           from *_map_sg().
 326
 327           Most drivers don't have this problem; it is safe to say Y here.
 328
 329 config IOMMU_HELPER
 330         def_bool PPC64
 331
 332 config SWIOTLB
 333         bool "SWIOTLB support"
 334         default n
 335         select IOMMU_HELPER
 336         ---help---
 337           Support for IO bounce buffering for systems without an IOMMU.
 338           This allows us to DMA to the full physical address space on
 339           platforms where the size of a physical address is larger
 340           than the bus address.  Not all platforms support this.
 341
 342 config HOTPLUG_CPU
 343         bool "Support for enabling/disabling CPUs"
 344         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 345         ---help---
 346           Say Y here to be able to disable and re-enable individual
 347           CPUs at runtime on SMP machines.
 348
 349           Say N if you are unsure.
 350
 351 config ARCH_CPU_PROBE_RELEASE
 352         def_bool y
 353         depends on HOTPLUG_CPU
 354
 355 config ARCH_ENABLE_MEMORY_HOTPLUG
 356         def_bool y
 357
 358 config ARCH_HAS_WALK_MEMORY
 359         def_bool y
 360
 361 config ARCH_ENABLE_MEMORY_HOTREMOVE
 362         def_bool y
 363
 364 config KEXEC
 365         bool "kexec system call (EXPERIMENTAL)"
 366         depends on PPC_BOOK3S && EXPERIMENTAL
 367         help
 368           kexec is a system call that implements the ability to shutdown your
 369           current kernel, and to start another kernel.  It is like a reboot
 370           but it is independent of the system firmware.   And like a reboot
 371           you can start any kernel with it, not just Linux.
 372
 373           The name comes from the similarity to the exec system call.
 374
 375           It is an ongoing process to be certain the hardware in a machine
 376           is properly shutdown, so do not be surprised if this code does not
 377           initially work for you.  It may help to enable device hotplugging
 378           support.  As of this writing the exact hardware interface is
 379           strongly in flux, so no good recommendation can be made.
 380
 381 config CRASH_DUMP
 382         bool "Build a kdump crash kernel"
 383         depends on PPC64 || 6xx
 384         select RELOCATABLE if PPC64
 385         help
 386           Build a kernel suitable for use as a kdump capture kernel.
 387           The same kernel binary can be used as production kernel and dump
 388           capture kernel.
 389
 390 config PHYP_DUMP
 391         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 392         depends on PPC_PSERIES && EXPERIMENTAL
 393         help
 394           Hypervisor-assisted dump is meant to be a kdump replacement
 395           offering robustness and speed not possible without system
 396           hypervisor assistance.
 397
 398           If unsure, say "N"
 399
 400 config PPCBUG_NVRAM
 401         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 402         default y if PPC_PREP
 403
 404 config IRQ_ALL_CPUS
 405         bool "Distribute interrupts on all CPUs by default"
 406         depends on SMP && !MV64360
 407         help
 408           This option gives the kernel permission to distribute IRQs across
 409           multiple CPUs.  Saying N here will route all IRQs to the first
 410           CPU.  Generally saying Y is safe, although some problems have been
 411           reported with SMP Power Macintoshes with this option enabled.
 412
 413 config SPARSE_IRQ
 414         bool "Support sparse irq numbering"
 415         default y
 416         help
 417           This enables support for sparse irqs. This is useful for distro
 418           kernels that want to define a high CONFIG_NR_CPUS value but still
 419           want to have low kernel memory footprint on smaller machines.
 420
 421           ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
 422             out the irq_desc[] array in a more NUMA-friendly way. )
 423
 424           If you don't know what to do here, say Y.
 425
 426 config NUMA
 427         bool "NUMA support"
 428         depends on PPC64
 429         default y if SMP && PPC_PSERIES
 430
 431 config NODES_SHIFT
 432         int
 433         default "8" if PPC64
 434         default "4"
 435         depends on NEED_MULTIPLE_NODES
 436
 437 config MAX_ACTIVE_REGIONS
 438         int
 439         default "256" if PPC64
 440         default "32"
 441
 442 config ARCH_SELECT_MEMORY_MODEL
 443         def_bool y
 444         depends on PPC64
 445
 446 config ARCH_FLATMEM_ENABLE
 447         def_bool y
 448         depends on (PPC64 && !NUMA) || PPC32
 449
 450 config ARCH_SPARSEMEM_ENABLE
 451         def_bool y
 452         depends on PPC64
 453         select SPARSEMEM_VMEMMAP_ENABLE
 454
 455 config ARCH_SPARSEMEM_DEFAULT
 456         def_bool y
 457         depends on (SMP && PPC_PSERIES) || PPC_PS3
 458
 459 config ARCH_POPULATES_NODE_MAP
 460         def_bool y
 461
 462 config SYS_SUPPORTS_HUGETLBFS
 463        def_bool y
 464        depends on PPC_BOOK3S_64
 465
 466 source "mm/Kconfig"
 467
 468 config ARCH_MEMORY_PROBE
 469         def_bool y
 470         depends on MEMORY_HOTPLUG
 471
 472 # Some NUMA nodes have memory ranges that span
 473 # other nodes.  Even though a pfn is valid and
 474 # between a node's start and end pfns, it may not
 475 # reside on that node.  See memmap_init_zone()
 476 # for details.
 477 config NODES_SPAN_OTHER_NODES
 478         def_bool y
 479         depends on NEED_MULTIPLE_NODES
 480
 481 config PPC_HAS_HASH_64K
 482         bool
 483         depends on PPC64
 484         default n
 485
 486 config STDBINUTILS
 487         bool "Using standard binutils settings"
 488         depends on 44x
 489         default y
 490         help
 491           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 492           Note, that kernel will be able to run only those applications,
 493           which had been compiled using binutils later than 2.17.50.0.3 with
 494           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 495           the older binutils, you can patch them with a trivial patch, which
 496           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 497
 498 choice
 499         prompt "Page size"
 500         default PPC_4K_PAGES
 501         help
 502           Select the kernel logical page size. Increasing the page size
 503           will reduce software overhead at each page boundary, allow
 504           hardware prefetch mechanisms to be more effective, and allow
 505           larger dma transfers increasing IO efficiency and reducing
 506           overhead. However the utilization of memory will increase.
 507           For example, each cached file will using a multiple of the
 508           page size to hold its contents and the difference between the
 509           end of file and the end of page is wasted.
 510
 511           Some dedicated systems, such as software raid serving with
 512           accelerated calculations, have shown significant increases.
 513
 514           If you configure a 64 bit kernel for 64k pages but the
 515           processor does not support them, then the kernel will simulate
 516           them with 4k pages, loading them on demand, but with the
 517           reduced software overhead and larger internal fragmentation.
 518           For the 32 bit kernel, a large page option will not be offered
 519           unless it is supported by the configured processor.
 520
 521           If unsure, choose 4K_PAGES.
 522
 523 config PPC_4K_PAGES
 524         bool "4k page size"
 525
 526 config PPC_16K_PAGES
 527         bool "16k page size" if 44x
 528
 529 config PPC_64K_PAGES
 530         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 531         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 532
 533 config PPC_256K_PAGES
 534         bool "256k page size" if 44x
 535         depends on !STDBINUTILS
 536         help
 537           Make the page size 256k.
 538
 539           As the ELF standard only requires alignment to support page
 540           sizes up to 64k, you will need to compile all of your user
 541           space applications with a non-standard binutils settings
 542           (see the STDBINUTILS description for details).
 543
 544           Say N unless you know what you are doing.
 545
 546 endchoice
 547
 548 config FORCE_MAX_ZONEORDER
 549         int "Maximum zone order"
 550         range 9 64 if PPC64 && PPC_64K_PAGES
 551         default "9" if PPC64 && PPC_64K_PAGES
 552         range 13 64 if PPC64 && !PPC_64K_PAGES
 553         default "13" if PPC64 && !PPC_64K_PAGES
 554         range 9 64 if PPC32 && PPC_16K_PAGES
 555         default "9" if PPC32 && PPC_16K_PAGES
 556         range 7 64 if PPC32 && PPC_64K_PAGES
 557         default "7" if PPC32 && PPC_64K_PAGES
 558         range 5 64 if PPC32 && PPC_256K_PAGES
 559         default "5" if PPC32 && PPC_256K_PAGES
 560         range 11 64
 561         default "11"
 562         help
 563           The kernel memory allocator divides physically contiguous memory
 564           blocks into "zones", where each zone is a power of two number of
 565           pages.  This option selects the largest power of two that the kernel
 566           keeps in the memory allocator.  If you need to allocate very large
 567           blocks of physically contiguous memory, then you may need to
 568           increase this value.
 569
 570           This config option is actually maximum order plus one. For example,
 571           a value of 11 means that the largest free memory block is 2^10 pages.
 572
 573           The page size is not necessarily 4KB.  For example, on 64-bit
 574           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 575           this in mind when choosing a value for this option.
 576
 577 config PPC_SUBPAGE_PROT
 578         bool "Support setting protections for 4k subpages"
 579         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 580         help
 581           This option adds support for a system call to allow user programs
 582           to set access permissions (read/write, readonly, or no access)
 583           on the 4k subpages of each 64k page.
 584
 585 config SCHED_SMT
 586         bool "SMT (Hyperthreading) scheduler support"
 587         depends on PPC64 && SMP
 588         help
 589           SMT scheduler support improves the CPU scheduler's decision making
 590           when dealing with POWER5 cpus at a cost of slightly increased
 591           overhead in some places. If unsure say N here.
 592
 593 config PROC_DEVICETREE
 594         bool "Support for device tree in /proc"
 595         depends on PROC_FS
 596         help
 597           This option adds a device-tree directory under /proc which contains
 598           an image of the device tree that the kernel copies from Open
 599           Firmware or other boot firmware. If unsure, say Y here.
 600
 601 config CMDLINE_BOOL
 602         bool "Default bootloader kernel arguments"
 603
 604 config CMDLINE
 605         string "Initial kernel command string"
 606         depends on CMDLINE_BOOL
 607         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 608         help
 609           On some platforms, there is currently no way for the boot loader to
 610           pass arguments to the kernel. For these platforms, you can supply
 611           some command-line options at build time by entering them here.  In
 612           most cases you will need to specify the root device here.
 613
 614 config EXTRA_TARGETS
 615         string "Additional default image types"
 616         help
 617           List additional targets to be built by the bootwrapper here (separated
 618           by spaces).  This is useful for targets that depend of device tree
 619           files in the .dts directory.
 620
 621           Targets in this list will be build as part of the default build
 622           target, or when the user does a 'make zImage' or a
 623           'make zImage.initrd'.
 624
 625           If unsure, leave blank
 626
 627 if !44x || BROKEN
 628 config ARCH_WANTS_FREEZER_CONTROL
 629         def_bool y
 630         depends on ADB_PMU
 631
 632 source kernel/power/Kconfig
 633 endif
 634
 635 config SECCOMP
 636         bool "Enable seccomp to safely compute untrusted bytecode"
 637         depends on PROC_FS
 638         default y
 639         help
 640           This kernel feature is useful for number crunching applications
 641           that may need to compute untrusted bytecode during their
 642           execution. By using pipes or other transports made available to
 643           the process as file descriptors supporting the read/write
 644           syscalls, it's possible to isolate those applications in
 645           their own address space using seccomp. Once seccomp is
 646           enabled via /proc/<pid>/seccomp, it cannot be disabled
 647           and the task is only allowed to execute a few safe syscalls
 648           defined by each seccomp mode.
 649
 650           If unsure, say Y. Only embedded should say N here.
 651
 652 endmenu
 653
 654 config ISA_DMA_API
 655         bool
 656         default !PPC_ISERIES || PCI
 657
 658 menu "Bus options"
 659
 660 config ISA
 661         bool "Support for ISA-bus hardware"
 662         depends on PPC_PREP || PPC_CHRP
 663         select PPC_I8259
 664         help
 665           Find out whether you have ISA slots on your motherboard.  ISA is the
 666           name of a bus system, i.e. the way the CPU talks to the other stuff
 667           inside your box.  If you have an Apple machine, say N here; if you
 668           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 669           you have an embedded board, consult your board documentation.
 670
 671 config ZONE_DMA
 672         bool
 673         default y
 674
 675 config GENERIC_ISA_DMA
 676         bool
 677         depends on PPC64 || POWER4 || 6xx && !CPM2
 678         default y
 679
 680 config PPC_INDIRECT_PCI
 681         bool
 682         depends on PCI
 683         default y if 40x || 44x
 684         default n
 685
 686 config EISA
 687         bool
 688
 689 config SBUS
 690         bool
 691
 692 config FSL_SOC
 693         bool
 694
 695 config FSL_PCI
 696         bool
 697         select PPC_INDIRECT_PCI
 698         select PCI_QUIRKS
 699
 700 config FSL_PMC
 701         bool
 702         default y
 703         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 704         help
 705           Freescale MPC85xx/MPC86xx power management controller support
 706           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 707
 708 config 4xx_SOC
 709         bool
 710
 711 config FSL_LBC
 712         bool
 713         help
 714           Freescale Localbus support
 715
 716 config FSL_GTM
 717         bool
 718         depends on PPC_83xx || QUICC_ENGINE || CPM2
 719         help
 720           Freescale General-purpose Timers support
 721
 722 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 723 config MCA
 724         bool
 725
 726 # Platforms that what PCI turned unconditionally just do select PCI
 727 # in their config node.  Platforms that want to choose at config
 728 # time should select PPC_PCI_CHOICE
 729 config PPC_PCI_CHOICE
 730         bool
 731
 732 config PCI
 733         bool "PCI support" if PPC_PCI_CHOICE
 734         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 735                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 736         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 737         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 738         select ARCH_SUPPORTS_MSI
 739         help
 740           Find out whether your system includes a PCI bus. PCI is the name of
 741           a bus system, i.e. the way the CPU talks to the other stuff inside
 742           your box.  If you say Y here, the kernel will include drivers and
 743           infrastructure code to support PCI bus devices.
 744
 745 config PCI_DOMAINS
 746         def_bool PCI
 747
 748 config PCI_SYSCALL
 749         def_bool PCI
 750
 751 config PCI_QSPAN
 752         bool "QSpan PCI"
 753         depends on !4xx && !CPM2 && 8xx
 754         select PPC_I8259
 755         help
 756           Say Y here if you have a system based on a Motorola 8xx-series
 757           embedded processor with a QSPAN PCI interface, otherwise say N.
 758
 759 config PCI_8260
 760         bool
 761         depends on PCI && 8260
 762         select PPC_INDIRECT_PCI
 763         default y
 764
 765 config 8260_PCI9
 766         bool "Enable workaround for MPC826x erratum PCI 9"
 767         depends on PCI_8260 && !8272
 768         default y
 769
 770 choice
 771         prompt "IDMA channel for PCI 9 workaround"
 772         depends on 8260_PCI9
 773
 774 config 8260_PCI9_IDMA1
 775         bool "IDMA1"
 776
 777 config 8260_PCI9_IDMA2
 778         bool "IDMA2"
 779
 780 config 8260_PCI9_IDMA3
 781         bool "IDMA3"
 782
 783 config 8260_PCI9_IDMA4
 784         bool "IDMA4"
 785
 786 endchoice
 787
 788 source "drivers/pci/pcie/Kconfig"
 789
 790 source "drivers/pci/Kconfig"
 791
 792 source "drivers/pcmcia/Kconfig"
 793
 794 source "drivers/pci/hotplug/Kconfig"
 795
 796 config HAS_RAPIDIO
 797         bool
 798         default n
 799
 800 config RAPIDIO
 801         bool "RapidIO support"
 802         depends on HAS_RAPIDIO
 803         help
 804           If you say Y here, the kernel will include drivers and
 805           infrastructure code to support RapidIO interconnect devices.
 806
 807 source "drivers/rapidio/Kconfig"
 808
 809 endmenu
 810
 811 menu "Advanced setup"
 812         depends on PPC32
 813
 814 config ADVANCED_OPTIONS
 815         bool "Prompt for advanced kernel configuration options"
 816         help
 817           This option will enable prompting for a variety of advanced kernel
 818           configuration options.  These options can cause the kernel to not
 819           work if they are set incorrectly, but can be used to optimize certain
 820           aspects of kernel memory management.
 821
 822           Unless you know what you are doing, say N here.
 823
 824 comment "Default settings for advanced configuration options are used"
 825         depends on !ADVANCED_OPTIONS
 826
 827 config LOWMEM_SIZE_BOOL
 828         bool "Set maximum low memory"
 829         depends on ADVANCED_OPTIONS
 830         help
 831           This option allows you to set the maximum amount of memory which
 832           will be used as "low memory", that is, memory which the kernel can
 833           access directly, without having to set up a kernel virtual mapping.
 834           This can be useful in optimizing the layout of kernel virtual
 835           memory.
 836
 837           Say N here unless you know what you are doing.
 838
 839 config LOWMEM_SIZE
 840         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 841         default "0x30000000"
 842
 843 config LOWMEM_CAM_NUM_BOOL
 844         bool "Set number of CAMs to use to map low memory"
 845         depends on ADVANCED_OPTIONS && FSL_BOOKE
 846         help
 847           This option allows you to set the maximum number of CAM slots that
 848           will be used to map low memory.  There are a limited number of slots
 849           available and even more limited number that will fit in the L1 MMU.
 850           However, using more entries will allow mapping more low memory.  This
 851           can be useful in optimizing the layout of kernel virtual memory.
 852
 853           Say N here unless you know what you are doing.
 854
 855 config LOWMEM_CAM_NUM
 856         depends on FSL_BOOKE
 857         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 858         default 3
 859
 860 config RELOCATABLE
 861         bool "Build a relocatable kernel (EXPERIMENTAL)"
 862         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 863         help
 864           This builds a kernel image that is capable of running at the
 865           location the kernel is loaded at (some alignment restrictions may
 866           exist).
 867
 868           One use is for the kexec on panic case where the recovery kernel
 869           must live at a different physical address than the primary
 870           kernel.
 871
 872           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 873           it has been loaded at and the compile time physical addresses
 874           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 875           setting can still be useful to bootwrappers that need to know the
 876           load location of the kernel (eg. u-boot/mkimage).
 877
 878 config PAGE_OFFSET_BOOL
 879         bool "Set custom page offset address"
 880         depends on ADVANCED_OPTIONS
 881         help
 882           This option allows you to set the kernel virtual address at which
 883           the kernel will map low memory.  This can be useful in optimizing
 884           the virtual memory layout of the system.
 885
 886           Say N here unless you know what you are doing.
 887
 888 config PAGE_OFFSET
 889         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 890         default "0xc0000000"
 891
 892 config KERNEL_START_BOOL
 893         bool "Set custom kernel base address"
 894         depends on ADVANCED_OPTIONS
 895         help
 896           This option allows you to set the kernel virtual address at which
 897           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 898           however there are times (like kdump) that one might not want them
 899           to be the same.
 900
 901           Say N here unless you know what you are doing.
 902
 903 config KERNEL_START
 904         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 905         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 906         default "0xc2000000" if CRASH_DUMP
 907         default "0xc0000000"
 908
 909 config PHYSICAL_START_BOOL
 910         bool "Set physical address where the kernel is loaded"
 911         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 912         help
 913           This gives the physical address where the kernel is loaded.
 914
 915           Say N here unless you know what you are doing.
 916
 917 config PHYSICAL_START
 918         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 919         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP
 920         default "0x00000000"
 921
 922 config PHYSICAL_ALIGN
 923         hex
 924         default "0x04000000" if FSL_BOOKE
 925         help
 926           This value puts the alignment restrictions on physical address
 927           where kernel is loaded and run from. Kernel is compiled for an
 928           address which meets above alignment restriction.
 929
 930 config TASK_SIZE_BOOL
 931         bool "Set custom user task size"
 932         depends on ADVANCED_OPTIONS
 933         help
 934           This option allows you to set the amount of virtual address space
 935           allocated to user tasks.  This can be useful in optimizing the
 936           virtual memory layout of the system.
 937
 938           Say N here unless you know what you are doing.
 939
 940 config TASK_SIZE
 941         hex "Size of user task space" if TASK_SIZE_BOOL
 942         default "0x80000000" if PPC_PREP || PPC_8xx
 943         default "0xc0000000"
 944
 945 config CONSISTENT_SIZE_BOOL
 946         bool "Set custom consistent memory pool size"
 947         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 948         help
 949           This option allows you to set the size of the
 950           consistent memory pool.  This pool of virtual memory
 951           is used to make consistent memory allocations.
 952
 953 config CONSISTENT_SIZE
 954         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 955         default "0x00200000" if NOT_COHERENT_CACHE
 956
 957 config PIN_TLB
 958         bool "Pinned Kernel TLBs (860 ONLY)"
 959         depends on ADVANCED_OPTIONS && 8xx
 960 endmenu
 961
 962 if PPC64
 963 config RELOCATABLE
 964         bool "Build a relocatable kernel"
 965         help
 966           This builds a kernel image that is capable of running anywhere
 967           in the RMA (real memory area) at any 16k-aligned base address.
 968           The kernel is linked as a position-independent executable (PIE)
 969           and contains dynamic relocations which are processed early
 970           in the bootup process.
 971
 972           One use is for the kexec on panic case where the recovery kernel
 973           must live at a different physical address than the primary
 974           kernel.
 975
 976 config PAGE_OFFSET
 977         hex
 978         default "0xc000000000000000"
 979 config KERNEL_START
 980         hex
 981         default "0xc000000000000000"
 982 config PHYSICAL_START
 983         hex
 984         default "0x00000000"
 985 endif
 986
 987 source "net/Kconfig"
 988
 989 source "drivers/Kconfig"
 990
 991 source "fs/Kconfig"
 992
 993 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 994
 995 source "lib/Kconfig"
 996
 997 source "arch/powerpc/Kconfig.debug"
 998
 999 source "security/Kconfig"
1000
1001 config KEYS_COMPAT
1002         bool
1003         depends on COMPAT && KEYS
1004         default y
1005
1006 source "crypto/Kconfig"
1007
1008 config PPC_CLOCK
1009         bool
1010         default n
1011         select HAVE_CLK
1012
1013 config PPC_LIB_RHEAP
1014         bool
1015
1016 source "arch/powerpc/kvm/Kconfig"