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_GPIO
  95         bool
  96         help
  97           Generic GPIO API support
  98
  99 config ARCH_NO_VIRT_TO_BUS
 100         def_bool PPC64
 101
 102 config PPC
 103         bool
 104         default y
 105         select OF
 106         select OF_EARLY_FLATTREE
 107         select HAVE_FTRACE_MCOUNT_RECORD
 108         select HAVE_DYNAMIC_FTRACE
 109         select HAVE_FUNCTION_TRACER
 110         select HAVE_FUNCTION_GRAPH_TRACER
 111         select ARCH_WANT_OPTIONAL_GPIOLIB
 112         select HAVE_IDE
 113         select HAVE_IOREMAP_PROT
 114         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 115         select HAVE_KPROBES
 116         select HAVE_ARCH_KGDB
 117         select HAVE_KRETPROBES
 118         select HAVE_ARCH_TRACEHOOK
 119         select HAVE_MEMBLOCK
 120         select HAVE_DMA_ATTRS
 121         select HAVE_DMA_API_DEBUG
 122         select USE_GENERIC_SMP_HELPERS if SMP
 123         select HAVE_OPROFILE
 124         select HAVE_SYSCALL_WRAPPERS if PPC64
 125         select GENERIC_ATOMIC64 if PPC32
 126         select HAVE_IRQ_WORK
 127         select HAVE_PERF_EVENTS
 128         select HAVE_REGS_AND_STACK_ACCESS_API
 129         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 130         select HAVE_GENERIC_HARDIRQS
 131         select HAVE_SPARSE_IRQ
 132         select IRQ_PER_CPU
 133         select GENERIC_IRQ_SHOW
 134         select GENERIC_IRQ_SHOW_LEVEL
 135         select HAVE_RCU_TABLE_FREE if SMP
 136         select HAVE_SYSCALL_TRACEPOINTS
 137         select HAVE_BPF_JIT if (PPC64 && NET)
 138         select HAVE_ARCH_JUMP_LABEL
 139         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 140
 141 config EARLY_PRINTK
 142         bool
 143         default y
 144
 145 config COMPAT
 146         bool
 147         default y if PPC64
 148         select COMPAT_BINFMT_ELF
 149
 150 config SYSVIPC_COMPAT
 151         bool
 152         depends on COMPAT && SYSVIPC
 153         default y
 154
 155 # All PPC32s use generic nvram driver through ppc_md
 156 config GENERIC_NVRAM
 157         bool
 158         default y if PPC32
 159
 160 config SCHED_OMIT_FRAME_POINTER
 161         bool
 162         default y
 163
 164 config ARCH_MAY_HAVE_PC_FDC
 165         bool
 166         default !PPC_PSERIES || PCI
 167
 168 config PPC_OF
 169         def_bool y
 170
 171 config PPC_UDBG_16550
 172         bool
 173         default n
 174
 175 config GENERIC_TBSYNC
 176         bool
 177         default y if PPC32 && SMP
 178         default n
 179
 180 config AUDIT_ARCH
 181         bool
 182         default y
 183
 184 config GENERIC_BUG
 185         bool
 186         default y
 187         depends on BUG
 188
 189 config SYS_SUPPORTS_APM_EMULATION
 190         default y if PMAC_APM_EMU
 191         bool
 192
 193 config EPAPR_BOOT
 194         bool
 195         help
 196           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 197         default n
 198
 199 config DEFAULT_UIMAGE
 200         bool
 201         help
 202           Used to allow a board to specify it wants a uImage built by default
 203         default n
 204
 205 config REDBOOT
 206         bool
 207
 208 config ARCH_HIBERNATION_POSSIBLE
 209         bool
 210         default y
 211
 212 config ARCH_SUSPEND_POSSIBLE
 213         def_bool y
 214         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 215                    (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
 216
 217 config PPC_DCR_NATIVE
 218         bool
 219         default n
 220
 221 config PPC_DCR_MMIO
 222         bool
 223         default n
 224
 225 config PPC_DCR
 226         bool
 227         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 228         default y
 229
 230 config PPC_OF_PLATFORM_PCI
 231         bool
 232         depends on PCI
 233         depends on PPC64 # not supported on 32 bits yet
 234         default n
 235
 236 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 237         def_bool y
 238
 239 config PPC_ADV_DEBUG_REGS
 240         bool
 241         depends on 40x || BOOKE
 242         default y
 243
 244 config PPC_ADV_DEBUG_IACS
 245         int
 246         depends on PPC_ADV_DEBUG_REGS
 247         default 4 if 44x
 248         default 2
 249
 250 config PPC_ADV_DEBUG_DACS
 251         int
 252         depends on PPC_ADV_DEBUG_REGS
 253         default 2
 254
 255 config PPC_ADV_DEBUG_DVCS
 256         int
 257         depends on PPC_ADV_DEBUG_REGS
 258         default 2 if 44x
 259         default 0
 260
 261 config PPC_ADV_DEBUG_DAC_RANGE
 262         bool
 263         depends on PPC_ADV_DEBUG_REGS && 44x
 264         default y
 265
 266 source "init/Kconfig"
 267
 268 source "kernel/Kconfig.freezer"
 269
 270 source "arch/powerpc/sysdev/Kconfig"
 271 source "arch/powerpc/platforms/Kconfig"
 272
 273 menu "Kernel options"
 274
 275 config HIGHMEM
 276         bool "High memory support"
 277         depends on PPC32
 278
 279 source kernel/time/Kconfig
 280 source kernel/Kconfig.hz
 281 source kernel/Kconfig.preempt
 282 source "fs/Kconfig.binfmt"
 283
 284 config HUGETLB_PAGE_SIZE_VARIABLE
 285         bool
 286         depends on HUGETLB_PAGE
 287         default y
 288
 289 config MATH_EMULATION
 290         bool "Math emulation"
 291         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 292         ---help---
 293           Some PowerPC chips designed for embedded applications do not have
 294           a floating-point unit and therefore do not implement the
 295           floating-point instructions in the PowerPC instruction set.  If you
 296           say Y here, the kernel will include code to emulate a floating-point
 297           unit, which will allow programs that use floating-point
 298           instructions to run.
 299
 300 config 8XX_MINIMAL_FPEMU
 301         bool "Minimal math emulation for 8xx"
 302         depends on 8xx && !MATH_EMULATION
 303         help
 304           Older arch/ppc kernels still emulated a few floating point
 305           instructions such as load and store, even when full math
 306           emulation is disabled.  Say "Y" here if you want to preserve
 307           this behavior.
 308
 309           It is recommended that you build a soft-float userspace instead.
 310
 311 config IOMMU_HELPER
 312         def_bool PPC64
 313
 314 config SWIOTLB
 315         bool "SWIOTLB support"
 316         default n
 317         select IOMMU_HELPER
 318         ---help---
 319           Support for IO bounce buffering for systems without an IOMMU.
 320           This allows us to DMA to the full physical address space on
 321           platforms where the size of a physical address is larger
 322           than the bus address.  Not all platforms support this.
 323
 324 config HOTPLUG_CPU
 325         bool "Support for enabling/disabling CPUs"
 326         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
 327         ---help---
 328           Say Y here to be able to disable and re-enable individual
 329           CPUs at runtime on SMP machines.
 330
 331           Say N if you are unsure.
 332
 333 config ARCH_CPU_PROBE_RELEASE
 334         def_bool y
 335         depends on HOTPLUG_CPU
 336
 337 config ARCH_ENABLE_MEMORY_HOTPLUG
 338         def_bool y
 339
 340 config ARCH_HAS_WALK_MEMORY
 341         def_bool y
 342
 343 config ARCH_ENABLE_MEMORY_HOTREMOVE
 344         def_bool y
 345
 346 config KEXEC
 347         bool "kexec system call (EXPERIMENTAL)"
 348         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !47x)) && EXPERIMENTAL
 349         help
 350           kexec is a system call that implements the ability to shutdown your
 351           current kernel, and to start another kernel.  It is like a reboot
 352           but it is independent of the system firmware.   And like a reboot
 353           you can start any kernel with it, not just Linux.
 354
 355           The name comes from the similarity to the exec system call.
 356
 357           It is an ongoing process to be certain the hardware in a machine
 358           is properly shutdown, so do not be surprised if this code does not
 359           initially work for you.  It may help to enable device hotplugging
 360           support.  As of this writing the exact hardware interface is
 361           strongly in flux, so no good recommendation can be made.
 362
 363 config CRASH_DUMP
 364         bool "Build a kdump crash kernel"
 365         depends on PPC64 || 6xx || FSL_BOOKE
 366         select RELOCATABLE if PPC64 || FSL_BOOKE
 367         help
 368           Build a kernel suitable for use as a kdump capture kernel.
 369           The same kernel binary can be used as production kernel and dump
 370           capture kernel.
 371
 372 config PHYP_DUMP
 373         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 374         depends on PPC_PSERIES && EXPERIMENTAL
 375         help
 376           Hypervisor-assisted dump is meant to be a kdump replacement
 377           offering robustness and speed not possible without system
 378           hypervisor assistance.
 379
 380           If unsure, say "N"
 381
 382 config PPCBUG_NVRAM
 383         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 384         default y if PPC_PREP
 385
 386 config IRQ_ALL_CPUS
 387         bool "Distribute interrupts on all CPUs by default"
 388         depends on SMP && !MV64360
 389         help
 390           This option gives the kernel permission to distribute IRQs across
 391           multiple CPUs.  Saying N here will route all IRQs to the first
 392           CPU.  Generally saying Y is safe, although some problems have been
 393           reported with SMP Power Macintoshes with this option enabled.
 394
 395 config NUMA
 396         bool "NUMA support"
 397         depends on PPC64
 398         default y if SMP && PPC_PSERIES
 399
 400 config NODES_SHIFT
 401         int
 402         default "8" if PPC64
 403         default "4"
 404         depends on NEED_MULTIPLE_NODES
 405
 406 config MAX_ACTIVE_REGIONS
 407         int
 408         default "256" if PPC64
 409         default "32"
 410
 411 config ARCH_SELECT_MEMORY_MODEL
 412         def_bool y
 413         depends on PPC64
 414
 415 config ARCH_FLATMEM_ENABLE
 416         def_bool y
 417         depends on (PPC64 && !NUMA) || PPC32
 418
 419 config ARCH_SPARSEMEM_ENABLE
 420         def_bool y
 421         depends on PPC64
 422         select SPARSEMEM_VMEMMAP_ENABLE
 423
 424 config ARCH_SPARSEMEM_DEFAULT
 425         def_bool y
 426         depends on (SMP && PPC_PSERIES) || PPC_PS3
 427
 428 config ARCH_POPULATES_NODE_MAP
 429         def_bool y
 430
 431 config SYS_SUPPORTS_HUGETLBFS
 432         bool
 433
 434 source "mm/Kconfig"
 435
 436 config ARCH_MEMORY_PROBE
 437         def_bool y
 438         depends on MEMORY_HOTPLUG
 439
 440 # Some NUMA nodes have memory ranges that span
 441 # other nodes.  Even though a pfn is valid and
 442 # between a node's start and end pfns, it may not
 443 # reside on that node.  See memmap_init_zone()
 444 # for details.
 445 config NODES_SPAN_OTHER_NODES
 446         def_bool y
 447         depends on NEED_MULTIPLE_NODES
 448
 449 config PPC_HAS_HASH_64K
 450         bool
 451         depends on PPC64
 452         default n
 453
 454 config STDBINUTILS
 455         bool "Using standard binutils settings"
 456         depends on 44x
 457         default y
 458         help
 459           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 460           Note, that kernel will be able to run only those applications,
 461           which had been compiled using binutils later than 2.17.50.0.3 with
 462           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 463           the older binutils, you can patch them with a trivial patch, which
 464           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 465
 466 choice
 467         prompt "Page size"
 468         default PPC_4K_PAGES
 469         help
 470           Select the kernel logical page size. Increasing the page size
 471           will reduce software overhead at each page boundary, allow
 472           hardware prefetch mechanisms to be more effective, and allow
 473           larger dma transfers increasing IO efficiency and reducing
 474           overhead. However the utilization of memory will increase.
 475           For example, each cached file will using a multiple of the
 476           page size to hold its contents and the difference between the
 477           end of file and the end of page is wasted.
 478
 479           Some dedicated systems, such as software raid serving with
 480           accelerated calculations, have shown significant increases.
 481
 482           If you configure a 64 bit kernel for 64k pages but the
 483           processor does not support them, then the kernel will simulate
 484           them with 4k pages, loading them on demand, but with the
 485           reduced software overhead and larger internal fragmentation.
 486           For the 32 bit kernel, a large page option will not be offered
 487           unless it is supported by the configured processor.
 488
 489           If unsure, choose 4K_PAGES.
 490
 491 config PPC_4K_PAGES
 492         bool "4k page size"
 493
 494 config PPC_16K_PAGES
 495         bool "16k page size" if 44x
 496
 497 config PPC_64K_PAGES
 498         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 499         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 500
 501 config PPC_256K_PAGES
 502         bool "256k page size" if 44x
 503         depends on !STDBINUTILS
 504         help
 505           Make the page size 256k.
 506
 507           As the ELF standard only requires alignment to support page
 508           sizes up to 64k, you will need to compile all of your user
 509           space applications with a non-standard binutils settings
 510           (see the STDBINUTILS description for details).
 511
 512           Say N unless you know what you are doing.
 513
 514 endchoice
 515
 516 config FORCE_MAX_ZONEORDER
 517         int "Maximum zone order"
 518         range 9 64 if PPC64 && PPC_64K_PAGES
 519         default "9" if PPC64 && PPC_64K_PAGES
 520         range 13 64 if PPC64 && !PPC_64K_PAGES
 521         default "13" if PPC64 && !PPC_64K_PAGES
 522         range 9 64 if PPC32 && PPC_16K_PAGES
 523         default "9" if PPC32 && PPC_16K_PAGES
 524         range 7 64 if PPC32 && PPC_64K_PAGES
 525         default "7" if PPC32 && PPC_64K_PAGES
 526         range 5 64 if PPC32 && PPC_256K_PAGES
 527         default "5" if PPC32 && PPC_256K_PAGES
 528         range 11 64
 529         default "11"
 530         help
 531           The kernel memory allocator divides physically contiguous memory
 532           blocks into "zones", where each zone is a power of two number of
 533           pages.  This option selects the largest power of two that the kernel
 534           keeps in the memory allocator.  If you need to allocate very large
 535           blocks of physically contiguous memory, then you may need to
 536           increase this value.
 537
 538           This config option is actually maximum order plus one. For example,
 539           a value of 11 means that the largest free memory block is 2^10 pages.
 540
 541           The page size is not necessarily 4KB.  For example, on 64-bit
 542           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 543           this in mind when choosing a value for this option.
 544
 545 config PPC_SUBPAGE_PROT
 546         bool "Support setting protections for 4k subpages"
 547         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 548         help
 549           This option adds support for a system call to allow user programs
 550           to set access permissions (read/write, readonly, or no access)
 551           on the 4k subpages of each 64k page.
 552
 553 config SCHED_SMT
 554         bool "SMT (Hyperthreading) scheduler support"
 555         depends on PPC64 && SMP
 556         help
 557           SMT scheduler support improves the CPU scheduler's decision making
 558           when dealing with POWER5 cpus at a cost of slightly increased
 559           overhead in some places. If unsure say N here.
 560
 561 config CMDLINE_BOOL
 562         bool "Default bootloader kernel arguments"
 563
 564 config CMDLINE
 565         string "Initial kernel command string"
 566         depends on CMDLINE_BOOL
 567         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 568         help
 569           On some platforms, there is currently no way for the boot loader to
 570           pass arguments to the kernel. For these platforms, you can supply
 571           some command-line options at build time by entering them here.  In
 572           most cases you will need to specify the root device here.
 573
 574 config EXTRA_TARGETS
 575         string "Additional default image types"
 576         help
 577           List additional targets to be built by the bootwrapper here (separated
 578           by spaces).  This is useful for targets that depend of device tree
 579           files in the .dts directory.
 580
 581           Targets in this list will be build as part of the default build
 582           target, or when the user does a 'make zImage' or a
 583           'make zImage.initrd'.
 584
 585           If unsure, leave blank
 586
 587 config ARCH_WANTS_FREEZER_CONTROL
 588         def_bool y
 589         depends on ADB_PMU
 590
 591 source kernel/power/Kconfig
 592
 593 config SECCOMP
 594         bool "Enable seccomp to safely compute untrusted bytecode"
 595         depends on PROC_FS
 596         default y
 597         help
 598           This kernel feature is useful for number crunching applications
 599           that may need to compute untrusted bytecode during their
 600           execution. By using pipes or other transports made available to
 601           the process as file descriptors supporting the read/write
 602           syscalls, it's possible to isolate those applications in
 603           their own address space using seccomp. Once seccomp is
 604           enabled via /proc/<pid>/seccomp, it cannot be disabled
 605           and the task is only allowed to execute a few safe syscalls
 606           defined by each seccomp mode.
 607
 608           If unsure, say Y. Only embedded should say N here.
 609
 610 endmenu
 611
 612 config ISA_DMA_API
 613         bool
 614         default !PPC_ISERIES || PCI
 615
 616 menu "Bus options"
 617
 618 config ISA
 619         bool "Support for ISA-bus hardware"
 620         depends on PPC_PREP || PPC_CHRP
 621         select PPC_I8259
 622         help
 623           Find out whether you have ISA slots on your motherboard.  ISA is the
 624           name of a bus system, i.e. the way the CPU talks to the other stuff
 625           inside your box.  If you have an Apple machine, say N here; if you
 626           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 627           you have an embedded board, consult your board documentation.
 628
 629 config ZONE_DMA
 630         bool
 631         default y
 632
 633 config NEED_DMA_MAP_STATE
 634         def_bool (PPC64 || NOT_COHERENT_CACHE)
 635
 636 config NEED_SG_DMA_LENGTH
 637         def_bool y
 638
 639 config GENERIC_ISA_DMA
 640         bool
 641         depends on ISA_DMA_API
 642         default y
 643
 644 config PPC_INDIRECT_PCI
 645         bool
 646         depends on PCI
 647         default y if 40x || 44x
 648         default n
 649
 650 config EISA
 651         bool
 652
 653 config SBUS
 654         bool
 655
 656 config FSL_SOC
 657         bool
 658         select HAVE_CAN_FLEXCAN if NET && CAN
 659         select PPC_CLOCK if CAN_FLEXCAN
 660
 661 config FSL_PCI
 662         bool
 663         select PPC_INDIRECT_PCI
 664         select PCI_QUIRKS
 665
 666 config FSL_PMC
 667         bool
 668         default y
 669         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 670         help
 671           Freescale MPC85xx/MPC86xx power management controller support
 672           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 673
 674 config PPC4xx_CPM
 675         bool
 676         default y
 677         depends on SUSPEND && (44x || 40x)
 678         help
 679           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 680           It also enables support for two different idle states (idle-wait
 681           and idle-doze).
 682
 683 config 4xx_SOC
 684         bool
 685
 686 config FSL_LBC
 687         bool "Freescale Local Bus support"
 688         depends on FSL_SOC
 689         help
 690           Enables reporting of errors from the Freescale local bus
 691           controller.  Also contains some common code used by
 692           drivers for specific local bus peripherals.
 693
 694 config FSL_GTM
 695         bool
 696         depends on PPC_83xx || QUICC_ENGINE || CPM2
 697         help
 698           Freescale General-purpose Timers support
 699
 700 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 701 config MCA
 702         bool
 703
 704 # Platforms that what PCI turned unconditionally just do select PCI
 705 # in their config node.  Platforms that want to choose at config
 706 # time should select PPC_PCI_CHOICE
 707 config PPC_PCI_CHOICE
 708         bool
 709
 710 config PCI
 711         bool "PCI support" if PPC_PCI_CHOICE
 712         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 713                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 714         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 715         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 716         select ARCH_SUPPORTS_MSI
 717         help
 718           Find out whether your system includes a PCI bus. PCI is the name of
 719           a bus system, i.e. the way the CPU talks to the other stuff inside
 720           your box.  If you say Y here, the kernel will include drivers and
 721           infrastructure code to support PCI bus devices.
 722
 723 config PCI_DOMAINS
 724         def_bool PCI
 725
 726 config PCI_SYSCALL
 727         def_bool PCI
 728
 729 config PCI_QSPAN
 730         bool "QSpan PCI"
 731         depends on !4xx && !CPM2 && 8xx
 732         select PPC_I8259
 733         help
 734           Say Y here if you have a system based on a Motorola 8xx-series
 735           embedded processor with a QSPAN PCI interface, otherwise say N.
 736
 737 config PCI_8260
 738         bool
 739         depends on PCI && 8260
 740         select PPC_INDIRECT_PCI
 741         default y
 742
 743 config 8260_PCI9
 744         bool "Enable workaround for MPC826x erratum PCI 9"
 745         depends on PCI_8260 && !8272
 746         default y
 747
 748 choice
 749         prompt "IDMA channel for PCI 9 workaround"
 750         depends on 8260_PCI9
 751
 752 config 8260_PCI9_IDMA1
 753         bool "IDMA1"
 754
 755 config 8260_PCI9_IDMA2
 756         bool "IDMA2"
 757
 758 config 8260_PCI9_IDMA3
 759         bool "IDMA3"
 760
 761 config 8260_PCI9_IDMA4
 762         bool "IDMA4"
 763
 764 endchoice
 765
 766 source "drivers/pci/pcie/Kconfig"
 767
 768 source "drivers/pci/Kconfig"
 769
 770 source "drivers/pcmcia/Kconfig"
 771
 772 source "drivers/pci/hotplug/Kconfig"
 773
 774 config HAS_RAPIDIO
 775         bool
 776         default n
 777
 778 config RAPIDIO
 779         bool "RapidIO support"
 780         depends on HAS_RAPIDIO || PCI
 781         help
 782           If you say Y here, the kernel will include drivers and
 783           infrastructure code to support RapidIO interconnect devices.
 784
 785 config FSL_RIO
 786         bool "Freescale Embedded SRIO Controller support"
 787         depends on RAPIDIO && HAS_RAPIDIO
 788         default "n"
 789         ---help---
 790           Include support for RapidIO controller on Freescale embedded
 791           processors (MPC8548, MPC8641, etc).
 792
 793 source "drivers/rapidio/Kconfig"
 794
 795 endmenu
 796
 797 menu "Advanced setup"
 798         depends on PPC32
 799
 800 config ADVANCED_OPTIONS
 801         bool "Prompt for advanced kernel configuration options"
 802         help
 803           This option will enable prompting for a variety of advanced kernel
 804           configuration options.  These options can cause the kernel to not
 805           work if they are set incorrectly, but can be used to optimize certain
 806           aspects of kernel memory management.
 807
 808           Unless you know what you are doing, say N here.
 809
 810 comment "Default settings for advanced configuration options are used"
 811         depends on !ADVANCED_OPTIONS
 812
 813 config LOWMEM_SIZE_BOOL
 814         bool "Set maximum low memory"
 815         depends on ADVANCED_OPTIONS
 816         help
 817           This option allows you to set the maximum amount of memory which
 818           will be used as "low memory", that is, memory which the kernel can
 819           access directly, without having to set up a kernel virtual mapping.
 820           This can be useful in optimizing the layout of kernel virtual
 821           memory.
 822
 823           Say N here unless you know what you are doing.
 824
 825 config LOWMEM_SIZE
 826         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 827         default "0x30000000"
 828
 829 config LOWMEM_CAM_NUM_BOOL
 830         bool "Set number of CAMs to use to map low memory"
 831         depends on ADVANCED_OPTIONS && FSL_BOOKE
 832         help
 833           This option allows you to set the maximum number of CAM slots that
 834           will be used to map low memory.  There are a limited number of slots
 835           available and even more limited number that will fit in the L1 MMU.
 836           However, using more entries will allow mapping more low memory.  This
 837           can be useful in optimizing the layout of kernel virtual memory.
 838
 839           Say N here unless you know what you are doing.
 840
 841 config LOWMEM_CAM_NUM
 842         depends on FSL_BOOKE
 843         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 844         default 3
 845
 846 config RELOCATABLE
 847         bool "Build a relocatable kernel (EXPERIMENTAL)"
 848         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || PPC_47x)
 849         help
 850           This builds a kernel image that is capable of running at the
 851           location the kernel is loaded at (some alignment restrictions may
 852           exist).
 853
 854           One use is for the kexec on panic case where the recovery kernel
 855           must live at a different physical address than the primary
 856           kernel.
 857
 858           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 859           it has been loaded at and the compile time physical addresses
 860           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 861           setting can still be useful to bootwrappers that need to know the
 862           load location of the kernel (eg. u-boot/mkimage).
 863
 864 config PAGE_OFFSET_BOOL
 865         bool "Set custom page offset 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 map low memory.  This can be useful in optimizing
 870           the virtual memory layout of the system.
 871
 872           Say N here unless you know what you are doing.
 873
 874 config PAGE_OFFSET
 875         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 876         default "0xc0000000"
 877
 878 config KERNEL_START_BOOL
 879         bool "Set custom kernel base 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 be loaded.  Normally this should match PAGE_OFFSET
 884           however there are times (like kdump) that one might not want them
 885           to be the same.
 886
 887           Say N here unless you know what you are doing.
 888
 889 config KERNEL_START
 890         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 891         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 892         default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
 893         default "0xc0000000"
 894
 895 config PHYSICAL_START_BOOL
 896         bool "Set physical address where the kernel is loaded"
 897         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 898         help
 899           This gives the physical address where the kernel is loaded.
 900
 901           Say N here unless you know what you are doing.
 902
 903 config PHYSICAL_START
 904         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 905         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
 906         default "0x00000000"
 907
 908 config PHYSICAL_ALIGN
 909         hex
 910         default "0x04000000" if FSL_BOOKE
 911         help
 912           This value puts the alignment restrictions on physical address
 913           where kernel is loaded and run from. Kernel is compiled for an
 914           address which meets above alignment restriction.
 915
 916 config TASK_SIZE_BOOL
 917         bool "Set custom user task size"
 918         depends on ADVANCED_OPTIONS
 919         help
 920           This option allows you to set the amount of virtual address space
 921           allocated to user tasks.  This can be useful in optimizing the
 922           virtual memory layout of the system.
 923
 924           Say N here unless you know what you are doing.
 925
 926 config TASK_SIZE
 927         hex "Size of user task space" if TASK_SIZE_BOOL
 928         default "0x80000000" if PPC_PREP || PPC_8xx
 929         default "0xc0000000"
 930
 931 config CONSISTENT_SIZE_BOOL
 932         bool "Set custom consistent memory pool size"
 933         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 934         help
 935           This option allows you to set the size of the
 936           consistent memory pool.  This pool of virtual memory
 937           is used to make consistent memory allocations.
 938
 939 config CONSISTENT_SIZE
 940         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 941         default "0x00200000" if NOT_COHERENT_CACHE
 942
 943 config PIN_TLB
 944         bool "Pinned Kernel TLBs (860 ONLY)"
 945         depends on ADVANCED_OPTIONS && 8xx
 946 endmenu
 947
 948 if PPC64
 949 config RELOCATABLE
 950         bool "Build a relocatable kernel"
 951         help
 952           This builds a kernel image that is capable of running anywhere
 953           in the RMA (real memory area) at any 16k-aligned base address.
 954           The kernel is linked as a position-independent executable (PIE)
 955           and contains dynamic relocations which are processed early
 956           in the bootup process.
 957
 958           One use is for the kexec on panic case where the recovery kernel
 959           must live at a different physical address than the primary
 960           kernel.
 961
 962 config PAGE_OFFSET
 963         hex
 964         default "0xc000000000000000"
 965 config KERNEL_START
 966         hex
 967         default "0xc000000000000000"
 968 config PHYSICAL_START
 969         hex
 970         default "0x00000000"
 971 endif
 972
 973 source "net/Kconfig"
 974
 975 source "drivers/Kconfig"
 976
 977 source "fs/Kconfig"
 978
 979 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 980
 981 source "lib/Kconfig"
 982
 983 source "arch/powerpc/Kconfig.debug"
 984
 985 source "security/Kconfig"
 986
 987 config KEYS_COMPAT
 988         bool
 989         depends on COMPAT && KEYS
 990         default y
 991
 992 source "crypto/Kconfig"
 993
 994 config PPC_CLOCK
 995         bool
 996         default n
 997         select HAVE_CLK
 998
 999 config PPC_LIB_RHEAP
1000         bool
1001
1002 source "arch/powerpc/kvm/Kconfig"