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 ARCH_HAS_CPU_IDLE_WAIT
  91         bool
  92         default y
  93
  94 config GENERIC_HWEIGHT
  95         bool
  96         default y
  97
  98 config GENERIC_GPIO
  99         bool
 100         help
 101           Generic GPIO API support
 102
 103 config ARCH_NO_VIRT_TO_BUS
 104         def_bool PPC64
 105
 106 config PPC
 107         bool
 108         default y
 109         select OF
 110         select OF_EARLY_FLATTREE
 111         select HAVE_FTRACE_MCOUNT_RECORD
 112         select HAVE_DYNAMIC_FTRACE
 113         select HAVE_FUNCTION_TRACER
 114         select HAVE_FUNCTION_GRAPH_TRACER
 115         select ARCH_WANT_OPTIONAL_GPIOLIB
 116         select HAVE_IDE
 117         select HAVE_IOREMAP_PROT
 118         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 119         select HAVE_KPROBES
 120         select HAVE_ARCH_KGDB
 121         select HAVE_KRETPROBES
 122         select HAVE_ARCH_TRACEHOOK
 123         select HAVE_MEMBLOCK
 124         select HAVE_MEMBLOCK_NODE_MAP
 125         select HAVE_DMA_ATTRS
 126         select HAVE_DMA_API_DEBUG
 127         select USE_GENERIC_SMP_HELPERS if SMP
 128         select HAVE_OPROFILE
 129         select HAVE_SYSCALL_WRAPPERS if PPC64
 130         select GENERIC_ATOMIC64 if PPC32
 131         select HAVE_IRQ_WORK
 132         select HAVE_PERF_EVENTS
 133         select HAVE_REGS_AND_STACK_ACCESS_API
 134         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 135         select HAVE_GENERIC_HARDIRQS
 136         select HAVE_SPARSE_IRQ
 137         select IRQ_PER_CPU
 138         select GENERIC_IRQ_SHOW
 139         select GENERIC_IRQ_SHOW_LEVEL
 140         select IRQ_FORCED_THREADING
 141         select HAVE_RCU_TABLE_FREE if SMP
 142         select HAVE_SYSCALL_TRACEPOINTS
 143         select HAVE_BPF_JIT if (PPC64 && NET)
 144         select HAVE_ARCH_JUMP_LABEL
 145         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 146
 147 config EARLY_PRINTK
 148         bool
 149         default y
 150
 151 config COMPAT
 152         bool
 153         default y if PPC64
 154         select COMPAT_BINFMT_ELF
 155
 156 config SYSVIPC_COMPAT
 157         bool
 158         depends on COMPAT && SYSVIPC
 159         default y
 160
 161 # All PPC32s use generic nvram driver through ppc_md
 162 config GENERIC_NVRAM
 163         bool
 164         default y if PPC32
 165
 166 config SCHED_OMIT_FRAME_POINTER
 167         bool
 168         default y
 169
 170 config ARCH_MAY_HAVE_PC_FDC
 171         bool
 172         default !PPC_PSERIES || PCI
 173
 174 config PPC_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 EPAPR_BOOT
 200         bool
 201         help
 202           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 203         default n
 204
 205 config DEFAULT_UIMAGE
 206         bool
 207         help
 208           Used to allow a board to specify it wants a uImage built by default
 209         default n
 210
 211 config REDBOOT
 212         bool
 213
 214 config ARCH_HIBERNATION_POSSIBLE
 215         bool
 216         default y
 217
 218 config ARCH_SUSPEND_POSSIBLE
 219         def_bool y
 220         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 221                    (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
 222
 223 config PPC_DCR_NATIVE
 224         bool
 225         default n
 226
 227 config PPC_DCR_MMIO
 228         bool
 229         default n
 230
 231 config PPC_DCR
 232         bool
 233         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 234         default y
 235
 236 config PPC_OF_PLATFORM_PCI
 237         bool
 238         depends on PCI
 239         depends on PPC64 # not supported on 32 bits yet
 240         default n
 241
 242 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 243         def_bool y
 244
 245 config PPC_ADV_DEBUG_REGS
 246         bool
 247         depends on 40x || BOOKE
 248         default y
 249
 250 config PPC_ADV_DEBUG_IACS
 251         int
 252         depends on PPC_ADV_DEBUG_REGS
 253         default 4 if 44x
 254         default 2
 255
 256 config PPC_ADV_DEBUG_DACS
 257         int
 258         depends on PPC_ADV_DEBUG_REGS
 259         default 2
 260
 261 config PPC_ADV_DEBUG_DVCS
 262         int
 263         depends on PPC_ADV_DEBUG_REGS
 264         default 2 if 44x
 265         default 0
 266
 267 config PPC_ADV_DEBUG_DAC_RANGE
 268         bool
 269         depends on PPC_ADV_DEBUG_REGS && 44x
 270         default y
 271
 272 source "init/Kconfig"
 273
 274 source "kernel/Kconfig.freezer"
 275
 276 source "arch/powerpc/sysdev/Kconfig"
 277 source "arch/powerpc/platforms/Kconfig"
 278
 279 menu "Kernel options"
 280
 281 config HIGHMEM
 282         bool "High memory support"
 283         depends on PPC32
 284
 285 source kernel/time/Kconfig
 286 source kernel/Kconfig.hz
 287 source kernel/Kconfig.preempt
 288 source "fs/Kconfig.binfmt"
 289
 290 config HUGETLB_PAGE_SIZE_VARIABLE
 291         bool
 292         depends on HUGETLB_PAGE
 293         default y
 294
 295 config MATH_EMULATION
 296         bool "Math emulation"
 297         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 298         ---help---
 299           Some PowerPC chips designed for embedded applications do not have
 300           a floating-point unit and therefore do not implement the
 301           floating-point instructions in the PowerPC instruction set.  If you
 302           say Y here, the kernel will include code to emulate a floating-point
 303           unit, which will allow programs that use floating-point
 304           instructions to run.
 305
 306 config 8XX_MINIMAL_FPEMU
 307         bool "Minimal math emulation for 8xx"
 308         depends on 8xx && !MATH_EMULATION
 309         help
 310           Older arch/ppc kernels still emulated a few floating point
 311           instructions such as load and store, even when full math
 312           emulation is disabled.  Say "Y" here if you want to preserve
 313           this behavior.
 314
 315           It is recommended that you build a soft-float userspace instead.
 316
 317 config IOMMU_HELPER
 318         def_bool PPC64
 319
 320 config SWIOTLB
 321         bool "SWIOTLB support"
 322         default n
 323         select IOMMU_HELPER
 324         ---help---
 325           Support for IO bounce buffering for systems without an IOMMU.
 326           This allows us to DMA to the full physical address space on
 327           platforms where the size of a physical address is larger
 328           than the bus address.  Not all platforms support this.
 329
 330 config HOTPLUG_CPU
 331         bool "Support for enabling/disabling CPUs"
 332         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
 333         ---help---
 334           Say Y here to be able to disable and re-enable individual
 335           CPUs at runtime on SMP machines.
 336
 337           Say N if you are unsure.
 338
 339 config ARCH_CPU_PROBE_RELEASE
 340         def_bool y
 341         depends on HOTPLUG_CPU
 342
 343 config ARCH_ENABLE_MEMORY_HOTPLUG
 344         def_bool y
 345
 346 config ARCH_HAS_WALK_MEMORY
 347         def_bool y
 348
 349 config ARCH_ENABLE_MEMORY_HOTREMOVE
 350         def_bool y
 351
 352 config KEXEC
 353         bool "kexec system call (EXPERIMENTAL)"
 354         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP && !PPC_47x)) && EXPERIMENTAL
 355         help
 356           kexec is a system call that implements the ability to shutdown your
 357           current kernel, and to start another kernel.  It is like a reboot
 358           but it is independent of the system firmware.   And like a reboot
 359           you can start any kernel with it, not just Linux.
 360
 361           The name comes from the similarity to the exec system call.
 362
 363           It is an ongoing process to be certain the hardware in a machine
 364           is properly shutdown, so do not be surprised if this code does not
 365           initially work for you.  It may help to enable device hotplugging
 366           support.  As of this writing the exact hardware interface is
 367           strongly in flux, so no good recommendation can be made.
 368
 369 config CRASH_DUMP
 370         bool "Build a kdump crash kernel"
 371         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP && !PPC_47x)
 372         select RELOCATABLE if PPC64 || 44x
 373         select DYNAMIC_MEMSTART if FSL_BOOKE
 374         help
 375           Build a kernel suitable for use as a kdump capture kernel.
 376           The same kernel binary can be used as production kernel and dump
 377           capture kernel.
 378
 379 config PHYP_DUMP
 380         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 381         depends on PPC_PSERIES && EXPERIMENTAL
 382         help
 383           Hypervisor-assisted dump is meant to be a kdump replacement
 384           offering robustness and speed not possible without system
 385           hypervisor assistance.
 386
 387           If unsure, say "N"
 388
 389 config IRQ_ALL_CPUS
 390         bool "Distribute interrupts on all CPUs by default"
 391         depends on SMP && !MV64360
 392         help
 393           This option gives the kernel permission to distribute IRQs across
 394           multiple CPUs.  Saying N here will route all IRQs to the first
 395           CPU.  Generally saying Y is safe, although some problems have been
 396           reported with SMP Power Macintoshes with this option enabled.
 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 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_IFC
 695         bool
 696         depends on FSL_SOC
 697
 698 config FSL_GTM
 699         bool
 700         depends on PPC_83xx || QUICC_ENGINE || CPM2
 701         help
 702           Freescale General-purpose Timers support
 703
 704 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 705 config MCA
 706         bool
 707
 708 # Platforms that what PCI turned unconditionally just do select PCI
 709 # in their config node.  Platforms that want to choose at config
 710 # time should select PPC_PCI_CHOICE
 711 config PPC_PCI_CHOICE
 712         bool
 713
 714 config PCI
 715         bool "PCI support" if PPC_PCI_CHOICE
 716         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 717                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 718         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 719         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 720         select ARCH_SUPPORTS_MSI
 721         select GENERIC_PCI_IOMAP
 722         help
 723           Find out whether your system includes a PCI bus. PCI is the name of
 724           a bus system, i.e. the way the CPU talks to the other stuff inside
 725           your box.  If you say Y here, the kernel will include drivers and
 726           infrastructure code to support PCI bus devices.
 727
 728 config PCI_DOMAINS
 729         def_bool PCI
 730
 731 config PCI_SYSCALL
 732         def_bool PCI
 733
 734 config PCI_QSPAN
 735         bool "QSpan PCI"
 736         depends on !4xx && !CPM2 && 8xx
 737         select PPC_I8259
 738         help
 739           Say Y here if you have a system based on a Motorola 8xx-series
 740           embedded processor with a QSPAN PCI interface, otherwise say N.
 741
 742 config PCI_8260
 743         bool
 744         depends on PCI && 8260
 745         select PPC_INDIRECT_PCI
 746         default y
 747
 748 config 8260_PCI9
 749         bool "Enable workaround for MPC826x erratum PCI 9"
 750         depends on PCI_8260 && !8272
 751         default y
 752
 753 source "drivers/pci/pcie/Kconfig"
 754
 755 source "drivers/pci/Kconfig"
 756
 757 source "drivers/pcmcia/Kconfig"
 758
 759 source "drivers/pci/hotplug/Kconfig"
 760
 761 config HAS_RAPIDIO
 762         bool
 763         default n
 764
 765 config RAPIDIO
 766         bool "RapidIO support"
 767         depends on HAS_RAPIDIO || PCI
 768         help
 769           If you say Y here, the kernel will include drivers and
 770           infrastructure code to support RapidIO interconnect devices.
 771
 772 config FSL_RIO
 773         bool "Freescale Embedded SRIO Controller support"
 774         depends on RAPIDIO && HAS_RAPIDIO
 775         default "n"
 776         ---help---
 777           Include support for RapidIO controller on Freescale embedded
 778           processors (MPC8548, MPC8641, etc).
 779
 780 source "drivers/rapidio/Kconfig"
 781
 782 endmenu
 783
 784 config NONSTATIC_KERNEL
 785         bool
 786         default n
 787
 788 menu "Advanced setup"
 789         depends on PPC32
 790
 791 config ADVANCED_OPTIONS
 792         bool "Prompt for advanced kernel configuration options"
 793         help
 794           This option will enable prompting for a variety of advanced kernel
 795           configuration options.  These options can cause the kernel to not
 796           work if they are set incorrectly, but can be used to optimize certain
 797           aspects of kernel memory management.
 798
 799           Unless you know what you are doing, say N here.
 800
 801 comment "Default settings for advanced configuration options are used"
 802         depends on !ADVANCED_OPTIONS
 803
 804 config LOWMEM_SIZE_BOOL
 805         bool "Set maximum low memory"
 806         depends on ADVANCED_OPTIONS
 807         help
 808           This option allows you to set the maximum amount of memory which
 809           will be used as "low memory", that is, memory which the kernel can
 810           access directly, without having to set up a kernel virtual mapping.
 811           This can be useful in optimizing the layout of kernel virtual
 812           memory.
 813
 814           Say N here unless you know what you are doing.
 815
 816 config LOWMEM_SIZE
 817         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 818         default "0x30000000"
 819
 820 config LOWMEM_CAM_NUM_BOOL
 821         bool "Set number of CAMs to use to map low memory"
 822         depends on ADVANCED_OPTIONS && FSL_BOOKE
 823         help
 824           This option allows you to set the maximum number of CAM slots that
 825           will be used to map low memory.  There are a limited number of slots
 826           available and even more limited number that will fit in the L1 MMU.
 827           However, using more entries will allow mapping more low memory.  This
 828           can be useful in optimizing the layout of kernel virtual memory.
 829
 830           Say N here unless you know what you are doing.
 831
 832 config LOWMEM_CAM_NUM
 833         depends on FSL_BOOKE
 834         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 835         default 3
 836
 837 config DYNAMIC_MEMSTART
 838         bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 839         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 840         select NONSTATIC_KERNEL
 841         help
 842           This option enables the kernel to be loaded at any page aligned
 843           physical address. The kernel creates a mapping from KERNELBASE to
 844           the address where the kernel is loaded. The page size here implies
 845           the TLB page size of the mapping for kernel on the particular platform.
 846           Please refer to the init code for finding the TLB page size.
 847
 848           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 849           kernel image, where the only restriction is the page aligned kernel
 850           load address. When this option is enabled, the compile time physical
 851           address CONFIG_PHYSICAL_START is ignored.
 852
 853           This option is overridden by CONFIG_RELOCATABLE
 854
 855 config RELOCATABLE
 856         bool "Build a relocatable kernel (EXPERIMENTAL)"
 857         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
 858         select NONSTATIC_KERNEL
 859         help
 860           This builds a kernel image that is capable of running at the
 861           location the kernel is loaded at, without any alignment restrictions.
 862           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 863
 864           One use is for the kexec on panic case where the recovery kernel
 865           must live at a different physical address than the primary
 866           kernel.
 867
 868           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 869           it has been loaded at and the compile time physical addresses
 870           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 871           setting can still be useful to bootwrappers that need to know the
 872           load address of the kernel (eg. u-boot/mkimage).
 873
 874 config RELOCATABLE_PPC32
 875         def_bool y
 876         depends on PPC32 && RELOCATABLE
 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 && !NONSTATIC_KERNEL
 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 && !NONSTATIC_KERNEL
 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         select NONSTATIC_KERNEL
 966         help
 967           This builds a kernel image that is capable of running anywhere
 968           in the RMA (real memory area) at any 16k-aligned base address.
 969           The kernel is linked as a position-independent executable (PIE)
 970           and contains dynamic relocations which are processed early
 971           in the bootup process.
 972
 973           One use is for the kexec on panic case where the recovery kernel
 974           must live at a different physical address than the primary
 975           kernel.
 976
 977 config PAGE_OFFSET
 978         hex
 979         default "0xc000000000000000"
 980 config KERNEL_START
 981         hex
 982         default "0xc000000000000000"
 983 config PHYSICAL_START
 984         hex
 985         default "0x00000000"
 986 endif
 987
 988 source "net/Kconfig"
 989
 990 source "drivers/Kconfig"
 991
 992 source "fs/Kconfig"
 993
 994 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 995
 996 source "lib/Kconfig"
 997
 998 source "arch/powerpc/Kconfig.debug"
 999
1000 source "security/Kconfig"
1001
1002 config KEYS_COMPAT
1003         bool
1004         depends on COMPAT && KEYS
1005         default y
1006
1007 source "crypto/Kconfig"
1008
1009 config PPC_CLOCK
1010         bool
1011         default n
1012         select HAVE_CLK
1013
1014 config PPC_LIB_RHEAP
1015         bool
1016
1017 source "arch/powerpc/kvm/Kconfig"