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 HAVE_SETUP_PER_CPU_AREA
  31         def_bool PPC64
  32
  33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  34         def_bool PPC64
  35
  36 config NR_IRQS
  37         int "Number of virtual interrupt numbers"
  38         range 32 32768
  39         default "512"
  40         help
  41           This defines the number of virtual interrupt numbers the kernel
  42           can manage. Virtual interrupt numbers are what you see in
  43           /proc/interrupts. If you configure your system to have too few,
  44           drivers will fail to load or worse - handle with care.
  45
  46 config STACKTRACE_SUPPORT
  47         bool
  48         default y
  49
  50 config HAVE_LATENCYTOP_SUPPORT
  51         def_bool y
  52
  53 config TRACE_IRQFLAGS_SUPPORT
  54         bool
  55         default y
  56
  57 config LOCKDEP_SUPPORT
  58         bool
  59         default y
  60
  61 config RWSEM_GENERIC_SPINLOCK
  62         bool
  63
  64 config RWSEM_XCHGADD_ALGORITHM
  65         bool
  66         default y
  67
  68 config GENERIC_LOCKBREAK
  69         bool
  70         default y
  71         depends on SMP && PREEMPT
  72
  73 config ARCH_HAS_ILOG2_U32
  74         bool
  75         default y
  76
  77 config ARCH_HAS_ILOG2_U64
  78         bool
  79         default y if 64BIT
  80
  81 config GENERIC_HWEIGHT
  82         bool
  83         default y
  84
  85 config PPC
  86         bool
  87         default y
  88         select BINFMT_ELF
  89         select OF
  90         select OF_EARLY_FLATTREE
  91         select HAVE_FTRACE_MCOUNT_RECORD
  92         select HAVE_DYNAMIC_FTRACE
  93         select HAVE_FUNCTION_TRACER
  94         select HAVE_FUNCTION_GRAPH_TRACER
  95         select SYSCTL_EXCEPTION_TRACE
  96         select ARCH_WANT_OPTIONAL_GPIOLIB
  97         select VIRT_TO_BUS if !PPC64
  98         select HAVE_IDE
  99         select HAVE_IOREMAP_PROT
 100         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 101         select HAVE_KPROBES
 102         select HAVE_ARCH_KGDB
 103         select HAVE_KRETPROBES
 104         select HAVE_ARCH_TRACEHOOK
 105         select HAVE_MEMBLOCK
 106         select HAVE_MEMBLOCK_NODE_MAP
 107         select HAVE_DMA_ATTRS
 108         select HAVE_DMA_API_DEBUG
 109         select USE_GENERIC_SMP_HELPERS if SMP
 110         select HAVE_OPROFILE
 111         select HAVE_DEBUG_KMEMLEAK
 112         select GENERIC_ATOMIC64 if PPC32
 113         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 114         select HAVE_PERF_EVENTS
 115         select HAVE_REGS_AND_STACK_ACCESS_API
 116         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 117         select HAVE_GENERIC_HARDIRQS
 118         select ARCH_WANT_IPC_PARSE_VERSION
 119         select SPARSE_IRQ
 120         select IRQ_DOMAIN
 121         select GENERIC_IRQ_SHOW
 122         select GENERIC_IRQ_SHOW_LEVEL
 123         select IRQ_FORCED_THREADING
 124         select HAVE_RCU_TABLE_FREE if SMP
 125         select HAVE_SYSCALL_TRACEPOINTS
 126         select HAVE_BPF_JIT if PPC64
 127         select HAVE_ARCH_JUMP_LABEL
 128         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 129         select GENERIC_SMP_IDLE_THREAD
 130         select GENERIC_CMOS_UPDATE
 131         select GENERIC_TIME_VSYSCALL_OLD
 132         select GENERIC_CLOCKEVENTS
 133         select GENERIC_STRNCPY_FROM_USER
 134         select GENERIC_STRNLEN_USER
 135         select HAVE_MOD_ARCH_SPECIFIC
 136         select MODULES_USE_ELF_RELA
 137         select CLONE_BACKWARDS
 138         select ARCH_USE_BUILTIN_BSWAP
 139         select OLD_SIGSUSPEND
 140         select OLD_SIGACTION if PPC32
 141
 142 config EARLY_PRINTK
 143         bool
 144         default y
 145
 146 config COMPAT
 147         bool
 148         default y if PPC64
 149         select COMPAT_BINFMT_ELF
 150         select ARCH_WANT_OLD_COMPAT_IPC
 151         select COMPAT_OLD_SIGACTION
 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 PPC_UDBG_16550
 175         bool
 176         default n
 177
 178 config GENERIC_TBSYNC
 179         bool
 180         default y if PPC32 && SMP
 181         default n
 182
 183 config AUDIT_ARCH
 184         bool
 185         default y
 186
 187 config GENERIC_BUG
 188         bool
 189         default y
 190         depends on BUG
 191
 192 config SYS_SUPPORTS_APM_EMULATION
 193         default y if PMAC_APM_EMU
 194         bool
 195
 196 config EPAPR_BOOT
 197         bool
 198         help
 199           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 200         default n
 201
 202 config DEFAULT_UIMAGE
 203         bool
 204         help
 205           Used to allow a board to specify it wants a uImage built by default
 206         default n
 207
 208 config REDBOOT
 209         bool
 210
 211 config ARCH_HIBERNATION_POSSIBLE
 212         bool
 213         default y
 214
 215 config ARCH_SUSPEND_POSSIBLE
 216         def_bool y
 217         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 218                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 219                    || 44x || 40x
 220
 221 config PPC_DCR_NATIVE
 222         bool
 223         default n
 224
 225 config PPC_DCR_MMIO
 226         bool
 227         default n
 228
 229 config PPC_DCR
 230         bool
 231         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 232         default y
 233
 234 config PPC_OF_PLATFORM_PCI
 235         bool
 236         depends on PCI
 237         depends on PPC64 # not supported on 32 bits yet
 238         default n
 239
 240 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 241         def_bool y
 242
 243 config ARCH_SUPPORTS_UPROBES
 244         def_bool y
 245
 246 config PPC_ADV_DEBUG_REGS
 247         bool
 248         depends on 40x || BOOKE
 249         default y
 250
 251 config PPC_ADV_DEBUG_IACS
 252         int
 253         depends on PPC_ADV_DEBUG_REGS
 254         default 4 if 44x
 255         default 2
 256
 257 config PPC_ADV_DEBUG_DACS
 258         int
 259         depends on PPC_ADV_DEBUG_REGS
 260         default 2
 261
 262 config PPC_ADV_DEBUG_DVCS
 263         int
 264         depends on PPC_ADV_DEBUG_REGS
 265         default 2 if 44x
 266         default 0
 267
 268 config PPC_ADV_DEBUG_DAC_RANGE
 269         bool
 270         depends on PPC_ADV_DEBUG_REGS && 44x
 271         default y
 272
 273 config PPC_EMULATE_SSTEP
 274         bool
 275         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 276
 277 source "init/Kconfig"
 278
 279 source "kernel/Kconfig.freezer"
 280
 281 source "arch/powerpc/sysdev/Kconfig"
 282 source "arch/powerpc/platforms/Kconfig"
 283
 284 menu "Kernel options"
 285
 286 config HIGHMEM
 287         bool "High memory support"
 288         depends on PPC32
 289
 290 source kernel/Kconfig.hz
 291 source kernel/Kconfig.preempt
 292 source "fs/Kconfig.binfmt"
 293
 294 config HUGETLB_PAGE_SIZE_VARIABLE
 295         bool
 296         depends on HUGETLB_PAGE
 297         default y
 298
 299 config MATH_EMULATION
 300         bool "Math emulation"
 301         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
 302         ---help---
 303           Some PowerPC chips designed for embedded applications do not have
 304           a floating-point unit and therefore do not implement the
 305           floating-point instructions in the PowerPC instruction set.  If you
 306           say Y here, the kernel will include code to emulate a floating-point
 307           unit, which will allow programs that use floating-point
 308           instructions to run.
 309
 310           This is also useful to emulate missing (optional) instructions
 311           such as fsqrt on cores that do have an FPU but do not implement
 312           them (such as Freescale BookE).
 313
 314 config PPC_TRANSACTIONAL_MEM
 315        bool "Transactional Memory support for POWERPC"
 316        depends on PPC_BOOK3S_64
 317        depends on SMP
 318        default n
 319        ---help---
 320          Support user-mode Transactional Memory on POWERPC.
 321
 322 config IOMMU_HELPER
 323         def_bool PPC64
 324
 325 config SWIOTLB
 326         bool "SWIOTLB support"
 327         default n
 328         select IOMMU_HELPER
 329         ---help---
 330           Support for IO bounce buffering for systems without an IOMMU.
 331           This allows us to DMA to the full physical address space on
 332           platforms where the size of a physical address is larger
 333           than the bus address.  Not all platforms support this.
 334
 335 config HOTPLUG_CPU
 336         bool "Support for enabling/disabling CPUs"
 337         depends on SMP && HOTPLUG && (PPC_PSERIES || \
 338         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 339         ---help---
 340           Say Y here to be able to disable and re-enable individual
 341           CPUs at runtime on SMP machines.
 342
 343           Say N if you are unsure.
 344
 345 config ARCH_CPU_PROBE_RELEASE
 346         def_bool y
 347         depends on HOTPLUG_CPU
 348
 349 config ARCH_ENABLE_MEMORY_HOTPLUG
 350         def_bool y
 351
 352 config ARCH_HAS_WALK_MEMORY
 353         def_bool y
 354
 355 config ARCH_ENABLE_MEMORY_HOTREMOVE
 356         def_bool y
 357
 358 config KEXEC
 359         bool "kexec system call"
 360         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 361         help
 362           kexec is a system call that implements the ability to shutdown your
 363           current kernel, and to start another kernel.  It is like a reboot
 364           but it is independent of the system firmware.   And like a reboot
 365           you can start any kernel with it, not just Linux.
 366
 367           The name comes from the similarity to the exec system call.
 368
 369           It is an ongoing process to be certain the hardware in a machine
 370           is properly shutdown, so do not be surprised if this code does not
 371           initially work for you.  It may help to enable device hotplugging
 372           support.  As of this writing the exact hardware interface is
 373           strongly in flux, so no good recommendation can be made.
 374
 375 config CRASH_DUMP
 376         bool "Build a kdump crash kernel"
 377         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 378         select RELOCATABLE if PPC64 || 44x
 379         select DYNAMIC_MEMSTART if FSL_BOOKE
 380         help
 381           Build a kernel suitable for use as a kdump capture kernel.
 382           The same kernel binary can be used as production kernel and dump
 383           capture kernel.
 384
 385 config FA_DUMP
 386         bool "Firmware-assisted dump"
 387         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 388         help
 389           A robust mechanism to get reliable kernel crash dump with
 390           assistance from firmware. This approach does not use kexec,
 391           instead firmware assists in booting the kdump kernel
 392           while preserving memory contents. Firmware-assisted dump
 393           is meant to be a kdump replacement offering robustness and
 394           speed not possible without system firmware assistance.
 395
 396           If unsure, say "N"
 397
 398 config IRQ_ALL_CPUS
 399         bool "Distribute interrupts on all CPUs by default"
 400         depends on SMP && !MV64360
 401         help
 402           This option gives the kernel permission to distribute IRQs across
 403           multiple CPUs.  Saying N here will route all IRQs to the first
 404           CPU.  Generally saying Y is safe, although some problems have been
 405           reported with SMP Power Macintoshes with this option enabled.
 406
 407 config NUMA
 408         bool "NUMA support"
 409         depends on PPC64
 410         default y if SMP && PPC_PSERIES
 411
 412 config NODES_SHIFT
 413         int
 414         default "8" if PPC64
 415         default "4"
 416         depends on NEED_MULTIPLE_NODES
 417
 418 config ARCH_SELECT_MEMORY_MODEL
 419         def_bool y
 420         depends on PPC64
 421
 422 config ARCH_FLATMEM_ENABLE
 423         def_bool y
 424         depends on (PPC64 && !NUMA) || PPC32
 425
 426 config ARCH_SPARSEMEM_ENABLE
 427         def_bool y
 428         depends on PPC64
 429         select SPARSEMEM_VMEMMAP_ENABLE
 430
 431 config ARCH_SPARSEMEM_DEFAULT
 432         def_bool y
 433         depends on (SMP && PPC_PSERIES) || PPC_PS3
 434
 435 config SYS_SUPPORTS_HUGETLBFS
 436         bool
 437
 438 source "mm/Kconfig"
 439
 440 config ARCH_MEMORY_PROBE
 441         def_bool y
 442         depends on MEMORY_HOTPLUG
 443
 444 # Some NUMA nodes have memory ranges that span
 445 # other nodes.  Even though a pfn is valid and
 446 # between a node's start and end pfns, it may not
 447 # reside on that node.  See memmap_init_zone()
 448 # for details.
 449 config NODES_SPAN_OTHER_NODES
 450         def_bool y
 451         depends on NEED_MULTIPLE_NODES
 452
 453 config PPC_HAS_HASH_64K
 454         bool
 455         depends on PPC64
 456         default n
 457
 458 config STDBINUTILS
 459         bool "Using standard binutils settings"
 460         depends on 44x
 461         default y
 462         help
 463           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 464           Note, that kernel will be able to run only those applications,
 465           which had been compiled using binutils later than 2.17.50.0.3 with
 466           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 467           the older binutils, you can patch them with a trivial patch, which
 468           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 469
 470 choice
 471         prompt "Page size"
 472         default PPC_4K_PAGES
 473         help
 474           Select the kernel logical page size. Increasing the page size
 475           will reduce software overhead at each page boundary, allow
 476           hardware prefetch mechanisms to be more effective, and allow
 477           larger dma transfers increasing IO efficiency and reducing
 478           overhead. However the utilization of memory will increase.
 479           For example, each cached file will using a multiple of the
 480           page size to hold its contents and the difference between the
 481           end of file and the end of page is wasted.
 482
 483           Some dedicated systems, such as software raid serving with
 484           accelerated calculations, have shown significant increases.
 485
 486           If you configure a 64 bit kernel for 64k pages but the
 487           processor does not support them, then the kernel will simulate
 488           them with 4k pages, loading them on demand, but with the
 489           reduced software overhead and larger internal fragmentation.
 490           For the 32 bit kernel, a large page option will not be offered
 491           unless it is supported by the configured processor.
 492
 493           If unsure, choose 4K_PAGES.
 494
 495 config PPC_4K_PAGES
 496         bool "4k page size"
 497
 498 config PPC_16K_PAGES
 499         bool "16k page size" if 44x
 500
 501 config PPC_64K_PAGES
 502         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 503         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 504
 505 config PPC_256K_PAGES
 506         bool "256k page size" if 44x
 507         depends on !STDBINUTILS
 508         help
 509           Make the page size 256k.
 510
 511           As the ELF standard only requires alignment to support page
 512           sizes up to 64k, you will need to compile all of your user
 513           space applications with a non-standard binutils settings
 514           (see the STDBINUTILS description for details).
 515
 516           Say N unless you know what you are doing.
 517
 518 endchoice
 519
 520 config FORCE_MAX_ZONEORDER
 521         int "Maximum zone order"
 522         range 9 64 if PPC64 && PPC_64K_PAGES
 523         default "9" if PPC64 && PPC_64K_PAGES
 524         range 13 64 if PPC64 && !PPC_64K_PAGES
 525         default "13" if PPC64 && !PPC_64K_PAGES
 526         range 9 64 if PPC32 && PPC_16K_PAGES
 527         default "9" if PPC32 && PPC_16K_PAGES
 528         range 7 64 if PPC32 && PPC_64K_PAGES
 529         default "7" if PPC32 && PPC_64K_PAGES
 530         range 5 64 if PPC32 && PPC_256K_PAGES
 531         default "5" if PPC32 && PPC_256K_PAGES
 532         range 11 64
 533         default "11"
 534         help
 535           The kernel memory allocator divides physically contiguous memory
 536           blocks into "zones", where each zone is a power of two number of
 537           pages.  This option selects the largest power of two that the kernel
 538           keeps in the memory allocator.  If you need to allocate very large
 539           blocks of physically contiguous memory, then you may need to
 540           increase this value.
 541
 542           This config option is actually maximum order plus one. For example,
 543           a value of 11 means that the largest free memory block is 2^10 pages.
 544
 545           The page size is not necessarily 4KB.  For example, on 64-bit
 546           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 547           this in mind when choosing a value for this option.
 548
 549 config PPC_SUBPAGE_PROT
 550         bool "Support setting protections for 4k subpages"
 551         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 552         help
 553           This option adds support for a system call to allow user programs
 554           to set access permissions (read/write, readonly, or no access)
 555           on the 4k subpages of each 64k page.
 556
 557 config SCHED_SMT
 558         bool "SMT (Hyperthreading) scheduler support"
 559         depends on PPC64 && SMP
 560         help
 561           SMT scheduler support improves the CPU scheduler's decision making
 562           when dealing with POWER5 cpus at a cost of slightly increased
 563           overhead in some places. If unsure say N here.
 564
 565 config PPC_DENORMALISATION
 566         bool "PowerPC denormalisation exception handling"
 567         depends on PPC_BOOK3S_64
 568         default "n"
 569         ---help---
 570           Add support for handling denormalisation of single precision
 571           values.  Useful for bare metal only.  If unsure say Y here.
 572
 573 config CMDLINE_BOOL
 574         bool "Default bootloader kernel arguments"
 575
 576 config CMDLINE
 577         string "Initial kernel command string"
 578         depends on CMDLINE_BOOL
 579         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 580         help
 581           On some platforms, there is currently no way for the boot loader to
 582           pass arguments to the kernel. For these platforms, you can supply
 583           some command-line options at build time by entering them here.  In
 584           most cases you will need to specify the root device here.
 585
 586 config EXTRA_TARGETS
 587         string "Additional default image types"
 588         help
 589           List additional targets to be built by the bootwrapper here (separated
 590           by spaces).  This is useful for targets that depend of device tree
 591           files in the .dts directory.
 592
 593           Targets in this list will be build as part of the default build
 594           target, or when the user does a 'make zImage' or a
 595           'make zImage.initrd'.
 596
 597           If unsure, leave blank
 598
 599 config ARCH_WANTS_FREEZER_CONTROL
 600         def_bool y
 601         depends on ADB_PMU
 602
 603 source kernel/power/Kconfig
 604
 605 config SECCOMP
 606         bool "Enable seccomp to safely compute untrusted bytecode"
 607         depends on PROC_FS
 608         default y
 609         help
 610           This kernel feature is useful for number crunching applications
 611           that may need to compute untrusted bytecode during their
 612           execution. By using pipes or other transports made available to
 613           the process as file descriptors supporting the read/write
 614           syscalls, it's possible to isolate those applications in
 615           their own address space using seccomp. Once seccomp is
 616           enabled via /proc/<pid>/seccomp, it cannot be disabled
 617           and the task is only allowed to execute a few safe syscalls
 618           defined by each seccomp mode.
 619
 620           If unsure, say Y. Only embedded should say N here.
 621
 622 endmenu
 623
 624 config ISA_DMA_API
 625         bool
 626         default PCI
 627
 628 menu "Bus options"
 629
 630 config ISA
 631         bool "Support for ISA-bus hardware"
 632         depends on PPC_CHRP
 633         select PPC_I8259
 634         help
 635           Find out whether you have ISA slots on your motherboard.  ISA is the
 636           name of a bus system, i.e. the way the CPU talks to the other stuff
 637           inside your box.  If you have an Apple machine, say N here; if you
 638           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 639           embedded board, consult your board documentation.
 640
 641 config ZONE_DMA
 642         bool
 643         default y
 644
 645 config NEED_DMA_MAP_STATE
 646         def_bool (PPC64 || NOT_COHERENT_CACHE)
 647
 648 config NEED_SG_DMA_LENGTH
 649         def_bool y
 650
 651 config GENERIC_ISA_DMA
 652         bool
 653         depends on ISA_DMA_API
 654         default y
 655
 656 config PPC_INDIRECT_PCI
 657         bool
 658         depends on PCI
 659         default y if 40x || 44x
 660         default n
 661
 662 config EISA
 663         bool
 664
 665 config SBUS
 666         bool
 667
 668 config FSL_SOC
 669         bool
 670         select HAVE_CAN_FLEXCAN if NET && CAN
 671
 672 config FSL_PCI
 673         bool
 674         select PPC_INDIRECT_PCI
 675         select PCI_QUIRKS
 676
 677 config FSL_PMC
 678         bool
 679         default y
 680         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 681         help
 682           Freescale MPC85xx/MPC86xx power management controller support
 683           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 684
 685 config PPC4xx_CPM
 686         bool
 687         default y
 688         depends on SUSPEND && (44x || 40x)
 689         help
 690           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 691           It also enables support for two different idle states (idle-wait
 692           and idle-doze).
 693
 694 config 4xx_SOC
 695         bool
 696
 697 config FSL_LBC
 698         bool "Freescale Local Bus support"
 699         depends on FSL_SOC
 700         help
 701           Enables reporting of errors from the Freescale local bus
 702           controller.  Also contains some common code used by
 703           drivers for specific local bus peripherals.
 704
 705 config FSL_IFC
 706         bool
 707         depends on FSL_SOC
 708
 709 config FSL_GTM
 710         bool
 711         depends on PPC_83xx || QUICC_ENGINE || CPM2
 712         help
 713           Freescale General-purpose Timers support
 714
 715 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 716 config MCA
 717         bool
 718
 719 # Platforms that what PCI turned unconditionally just do select PCI
 720 # in their config node.  Platforms that want to choose at config
 721 # time should select PPC_PCI_CHOICE
 722 config PPC_PCI_CHOICE
 723         bool
 724
 725 config PCI
 726         bool "PCI support" if PPC_PCI_CHOICE
 727         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 728                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 729         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 730         select ARCH_SUPPORTS_MSI
 731         select GENERIC_PCI_IOMAP
 732         help
 733           Find out whether your system includes a PCI bus. PCI is the name of
 734           a bus system, i.e. the way the CPU talks to the other stuff inside
 735           your box.  If you say Y here, the kernel will include drivers and
 736           infrastructure code to support PCI bus devices.
 737
 738 config PCI_DOMAINS
 739         def_bool PCI
 740
 741 config PCI_SYSCALL
 742         def_bool PCI
 743
 744 config PCI_QSPAN
 745         bool "QSpan PCI"
 746         depends on !4xx && !CPM2 && 8xx
 747         select PPC_I8259
 748         help
 749           Say Y here if you have a system based on a Motorola 8xx-series
 750           embedded processor with a QSPAN PCI interface, otherwise say N.
 751
 752 config PCI_8260
 753         bool
 754         depends on PCI && 8260
 755         select PPC_INDIRECT_PCI
 756         default y
 757
 758 source "drivers/pci/pcie/Kconfig"
 759
 760 source "drivers/pci/Kconfig"
 761
 762 source "drivers/pcmcia/Kconfig"
 763
 764 source "drivers/pci/hotplug/Kconfig"
 765
 766 config HAS_RAPIDIO
 767         bool
 768         default n
 769
 770 config RAPIDIO
 771         bool "RapidIO support"
 772         depends on HAS_RAPIDIO || PCI
 773         help
 774           If you say Y here, the kernel will include drivers and
 775           infrastructure code to support RapidIO interconnect devices.
 776
 777 config FSL_RIO
 778         bool "Freescale Embedded SRIO Controller support"
 779         depends on RAPIDIO && HAS_RAPIDIO
 780         default "n"
 781         ---help---
 782           Include support for RapidIO controller on Freescale embedded
 783           processors (MPC8548, MPC8641, etc).
 784
 785 source "drivers/rapidio/Kconfig"
 786
 787 endmenu
 788
 789 config NONSTATIC_KERNEL
 790         bool
 791         default n
 792
 793 menu "Advanced setup"
 794         depends on PPC32
 795
 796 config ADVANCED_OPTIONS
 797         bool "Prompt for advanced kernel configuration options"
 798         help
 799           This option will enable prompting for a variety of advanced kernel
 800           configuration options.  These options can cause the kernel to not
 801           work if they are set incorrectly, but can be used to optimize certain
 802           aspects of kernel memory management.
 803
 804           Unless you know what you are doing, say N here.
 805
 806 comment "Default settings for advanced configuration options are used"
 807         depends on !ADVANCED_OPTIONS
 808
 809 config LOWMEM_SIZE_BOOL
 810         bool "Set maximum low memory"
 811         depends on ADVANCED_OPTIONS
 812         help
 813           This option allows you to set the maximum amount of memory which
 814           will be used as "low memory", that is, memory which the kernel can
 815           access directly, without having to set up a kernel virtual mapping.
 816           This can be useful in optimizing the layout of kernel virtual
 817           memory.
 818
 819           Say N here unless you know what you are doing.
 820
 821 config LOWMEM_SIZE
 822         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 823         default "0x30000000"
 824
 825 config LOWMEM_CAM_NUM_BOOL
 826         bool "Set number of CAMs to use to map low memory"
 827         depends on ADVANCED_OPTIONS && FSL_BOOKE
 828         help
 829           This option allows you to set the maximum number of CAM slots that
 830           will be used to map low memory.  There are a limited number of slots
 831           available and even more limited number that will fit in the L1 MMU.
 832           However, using more entries will allow mapping more low memory.  This
 833           can be useful in optimizing the layout of kernel virtual memory.
 834
 835           Say N here unless you know what you are doing.
 836
 837 config LOWMEM_CAM_NUM
 838         depends on FSL_BOOKE
 839         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 840         default 3
 841
 842 config DYNAMIC_MEMSTART
 843         bool "Enable page aligned dynamic load address for kernel"
 844         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 845         select NONSTATIC_KERNEL
 846         help
 847           This option enables the kernel to be loaded at any page aligned
 848           physical address. The kernel creates a mapping from KERNELBASE to
 849           the address where the kernel is loaded. The page size here implies
 850           the TLB page size of the mapping for kernel on the particular platform.
 851           Please refer to the init code for finding the TLB page size.
 852
 853           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 854           kernel image, where the only restriction is the page aligned kernel
 855           load address. When this option is enabled, the compile time physical
 856           address CONFIG_PHYSICAL_START is ignored.
 857
 858           This option is overridden by CONFIG_RELOCATABLE
 859
 860 config RELOCATABLE
 861         bool "Build a relocatable kernel"
 862         depends on ADVANCED_OPTIONS && FLATMEM && 44x
 863         select NONSTATIC_KERNEL
 864         help
 865           This builds a kernel image that is capable of running at the
 866           location the kernel is loaded at, without any alignment restrictions.
 867           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 868
 869           One use is for the kexec on panic case where the recovery kernel
 870           must live at a different physical address than the primary
 871           kernel.
 872
 873           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 874           it has been loaded at and the compile time physical addresses
 875           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 876           setting can still be useful to bootwrappers that need to know the
 877           load address of the kernel (eg. u-boot/mkimage).
 878
 879 config RELOCATABLE_PPC32
 880         def_bool y
 881         depends on PPC32 && RELOCATABLE
 882
 883 config PAGE_OFFSET_BOOL
 884         bool "Set custom page offset address"
 885         depends on ADVANCED_OPTIONS
 886         help
 887           This option allows you to set the kernel virtual address at which
 888           the kernel will map low memory.  This can be useful in optimizing
 889           the virtual memory layout of the system.
 890
 891           Say N here unless you know what you are doing.
 892
 893 config PAGE_OFFSET
 894         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 895         default "0xc0000000"
 896
 897 config KERNEL_START_BOOL
 898         bool "Set custom kernel base address"
 899         depends on ADVANCED_OPTIONS
 900         help
 901           This option allows you to set the kernel virtual address at which
 902           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 903           however there are times (like kdump) that one might not want them
 904           to be the same.
 905
 906           Say N here unless you know what you are doing.
 907
 908 config KERNEL_START
 909         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 910         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 911         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 912         default "0xc0000000"
 913
 914 config PHYSICAL_START_BOOL
 915         bool "Set physical address where the kernel is loaded"
 916         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 917         help
 918           This gives the physical address where the kernel is loaded.
 919
 920           Say N here unless you know what you are doing.
 921
 922 config PHYSICAL_START
 923         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 924         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 925         default "0x00000000"
 926
 927 config PHYSICAL_ALIGN
 928         hex
 929         default "0x04000000" if FSL_BOOKE
 930         help
 931           This value puts the alignment restrictions on physical address
 932           where kernel is loaded and run from. Kernel is compiled for an
 933           address which meets above alignment restriction.
 934
 935 config TASK_SIZE_BOOL
 936         bool "Set custom user task size"
 937         depends on ADVANCED_OPTIONS
 938         help
 939           This option allows you to set the amount of virtual address space
 940           allocated to user tasks.  This can be useful in optimizing the
 941           virtual memory layout of the system.
 942
 943           Say N here unless you know what you are doing.
 944
 945 config TASK_SIZE
 946         hex "Size of user task space" if TASK_SIZE_BOOL
 947         default "0x80000000" if PPC_8xx
 948         default "0xc0000000"
 949
 950 config CONSISTENT_SIZE_BOOL
 951         bool "Set custom consistent memory pool size"
 952         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 953         help
 954           This option allows you to set the size of the
 955           consistent memory pool.  This pool of virtual memory
 956           is used to make consistent memory allocations.
 957
 958 config CONSISTENT_SIZE
 959         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 960         default "0x00200000" if NOT_COHERENT_CACHE
 961
 962 config PIN_TLB
 963         bool "Pinned Kernel TLBs (860 ONLY)"
 964         depends on ADVANCED_OPTIONS && 8xx
 965 endmenu
 966
 967 if PPC64
 968 config RELOCATABLE
 969         bool "Build a relocatable kernel"
 970         select NONSTATIC_KERNEL
 971         help
 972           This builds a kernel image that is capable of running anywhere
 973           in the RMA (real memory area) at any 16k-aligned base address.
 974           The kernel is linked as a position-independent executable (PIE)
 975           and contains dynamic relocations which are processed early
 976           in the bootup process.
 977
 978           One use is for the kexec on panic case where the recovery kernel
 979           must live at a different physical address than the primary
 980           kernel.
 981
 982 config PAGE_OFFSET
 983         hex
 984         default "0xc000000000000000"
 985 config KERNEL_START
 986         hex
 987         default "0xc000000000000000"
 988 config PHYSICAL_START
 989         hex
 990         default "0x00000000"
 991 endif
 992
 993 source "net/Kconfig"
 994
 995 source "drivers/Kconfig"
 996
 997 source "fs/Kconfig"
 998
 999 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1000
1001 source "lib/Kconfig"
1002
1003 source "arch/powerpc/Kconfig.debug"
1004
1005 source "security/Kconfig"
1006
1007 config KEYS_COMPAT
1008         bool
1009         depends on COMPAT && KEYS
1010         default y
1011
1012 source "crypto/Kconfig"
1013
1014 config PPC_CLOCK
1015         bool
1016         default n
1017         select HAVE_CLK
1018
1019 config PPC_LIB_RHEAP
1020         bool
1021
1022 source "arch/powerpc/kvm/Kconfig"