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         select HAVE_DEBUG_STACKOVERFLOW
 142
 143 config EARLY_PRINTK
 144         bool
 145         default y
 146
 147 config COMPAT
 148         bool
 149         default y if PPC64
 150         select COMPAT_BINFMT_ELF
 151         select ARCH_WANT_OLD_COMPAT_IPC
 152         select COMPAT_OLD_SIGACTION
 153
 154 config SYSVIPC_COMPAT
 155         bool
 156         depends on COMPAT && SYSVIPC
 157         default y
 158
 159 # All PPC32s use generic nvram driver through ppc_md
 160 config GENERIC_NVRAM
 161         bool
 162         default y if PPC32
 163
 164 config SCHED_OMIT_FRAME_POINTER
 165         bool
 166         default y
 167
 168 config ARCH_MAY_HAVE_PC_FDC
 169         bool
 170         default !PPC_PSERIES || PCI
 171
 172 config PPC_OF
 173         def_bool y
 174
 175 config PPC_UDBG_16550
 176         bool
 177         default n
 178
 179 config GENERIC_TBSYNC
 180         bool
 181         default y if PPC32 && SMP
 182         default n
 183
 184 config AUDIT_ARCH
 185         bool
 186         default y
 187
 188 config GENERIC_BUG
 189         bool
 190         default y
 191         depends on BUG
 192
 193 config SYS_SUPPORTS_APM_EMULATION
 194         default y if PMAC_APM_EMU
 195         bool
 196
 197 config EPAPR_BOOT
 198         bool
 199         help
 200           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 201         default n
 202
 203 config DEFAULT_UIMAGE
 204         bool
 205         help
 206           Used to allow a board to specify it wants a uImage built by default
 207         default n
 208
 209 config REDBOOT
 210         bool
 211
 212 config ARCH_HIBERNATION_POSSIBLE
 213         bool
 214         default y
 215
 216 config ARCH_SUSPEND_POSSIBLE
 217         def_bool y
 218         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 219                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 220                    || 44x || 40x
 221
 222 config PPC_DCR_NATIVE
 223         bool
 224         default n
 225
 226 config PPC_DCR_MMIO
 227         bool
 228         default n
 229
 230 config PPC_DCR
 231         bool
 232         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 233         default y
 234
 235 config PPC_OF_PLATFORM_PCI
 236         bool
 237         depends on PCI
 238         depends on PPC64 # not supported on 32 bits yet
 239         default n
 240
 241 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 242         def_bool y
 243
 244 config ARCH_SUPPORTS_UPROBES
 245         def_bool y
 246
 247 config PPC_ADV_DEBUG_REGS
 248         bool
 249         depends on 40x || BOOKE
 250         default y
 251
 252 config PPC_ADV_DEBUG_IACS
 253         int
 254         depends on PPC_ADV_DEBUG_REGS
 255         default 4 if 44x
 256         default 2
 257
 258 config PPC_ADV_DEBUG_DACS
 259         int
 260         depends on PPC_ADV_DEBUG_REGS
 261         default 2
 262
 263 config PPC_ADV_DEBUG_DVCS
 264         int
 265         depends on PPC_ADV_DEBUG_REGS
 266         default 2 if 44x
 267         default 0
 268
 269 config PPC_ADV_DEBUG_DAC_RANGE
 270         bool
 271         depends on PPC_ADV_DEBUG_REGS && 44x
 272         default y
 273
 274 config PPC_EMULATE_SSTEP
 275         bool
 276         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 277
 278 source "init/Kconfig"
 279
 280 source "kernel/Kconfig.freezer"
 281
 282 source "arch/powerpc/sysdev/Kconfig"
 283 source "arch/powerpc/platforms/Kconfig"
 284
 285 menu "Kernel options"
 286
 287 config HIGHMEM
 288         bool "High memory support"
 289         depends on PPC32
 290
 291 source kernel/Kconfig.hz
 292 source kernel/Kconfig.preempt
 293 source "fs/Kconfig.binfmt"
 294
 295 config HUGETLB_PAGE_SIZE_VARIABLE
 296         bool
 297         depends on HUGETLB_PAGE
 298         default y
 299
 300 config MATH_EMULATION
 301         bool "Math emulation"
 302         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
 303         ---help---
 304           Some PowerPC chips designed for embedded applications do not have
 305           a floating-point unit and therefore do not implement the
 306           floating-point instructions in the PowerPC instruction set.  If you
 307           say Y here, the kernel will include code to emulate a floating-point
 308           unit, which will allow programs that use floating-point
 309           instructions to run.
 310
 311           This is also useful to emulate missing (optional) instructions
 312           such as fsqrt on cores that do have an FPU but do not implement
 313           them (such as Freescale BookE).
 314
 315 config PPC_TRANSACTIONAL_MEM
 316        bool "Transactional Memory support for POWERPC"
 317        depends on PPC_BOOK3S_64
 318        depends on SMP
 319        default n
 320        ---help---
 321          Support user-mode Transactional Memory on POWERPC.
 322
 323 config IOMMU_HELPER
 324         def_bool PPC64
 325
 326 config SWIOTLB
 327         bool "SWIOTLB support"
 328         default n
 329         select IOMMU_HELPER
 330         ---help---
 331           Support for IO bounce buffering for systems without an IOMMU.
 332           This allows us to DMA to the full physical address space on
 333           platforms where the size of a physical address is larger
 334           than the bus address.  Not all platforms support this.
 335
 336 config HOTPLUG_CPU
 337         bool "Support for enabling/disabling CPUs"
 338         depends on SMP && (PPC_PSERIES || \
 339         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 340         ---help---
 341           Say Y here to be able to disable and re-enable individual
 342           CPUs at runtime on SMP machines.
 343
 344           Say N if you are unsure.
 345
 346 config ARCH_CPU_PROBE_RELEASE
 347         def_bool y
 348         depends on HOTPLUG_CPU
 349
 350 config ARCH_ENABLE_MEMORY_HOTPLUG
 351         def_bool y
 352
 353 config ARCH_HAS_WALK_MEMORY
 354         def_bool y
 355
 356 config ARCH_ENABLE_MEMORY_HOTREMOVE
 357         def_bool y
 358
 359 config KEXEC
 360         bool "kexec system call"
 361         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 362         help
 363           kexec is a system call that implements the ability to shutdown your
 364           current kernel, and to start another kernel.  It is like a reboot
 365           but it is independent of the system firmware.   And like a reboot
 366           you can start any kernel with it, not just Linux.
 367
 368           The name comes from the similarity to the exec system call.
 369
 370           It is an ongoing process to be certain the hardware in a machine
 371           is properly shutdown, so do not be surprised if this code does not
 372           initially work for you.  It may help to enable device hotplugging
 373           support.  As of this writing the exact hardware interface is
 374           strongly in flux, so no good recommendation can be made.
 375
 376 config CRASH_DUMP
 377         bool "Build a kdump crash kernel"
 378         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 379         select RELOCATABLE if PPC64 || 44x
 380         select DYNAMIC_MEMSTART if FSL_BOOKE
 381         help
 382           Build a kernel suitable for use as a kdump capture kernel.
 383           The same kernel binary can be used as production kernel and dump
 384           capture kernel.
 385
 386 config FA_DUMP
 387         bool "Firmware-assisted dump"
 388         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 389         help
 390           A robust mechanism to get reliable kernel crash dump with
 391           assistance from firmware. This approach does not use kexec,
 392           instead firmware assists in booting the kdump kernel
 393           while preserving memory contents. Firmware-assisted dump
 394           is meant to be a kdump replacement offering robustness and
 395           speed not possible without system firmware assistance.
 396
 397           If unsure, say "N"
 398
 399 config IRQ_ALL_CPUS
 400         bool "Distribute interrupts on all CPUs by default"
 401         depends on SMP && !MV64360
 402         help
 403           This option gives the kernel permission to distribute IRQs across
 404           multiple CPUs.  Saying N here will route all IRQs to the first
 405           CPU.  Generally saying Y is safe, although some problems have been
 406           reported with SMP Power Macintoshes with this option enabled.
 407
 408 config NUMA
 409         bool "NUMA support"
 410         depends on PPC64
 411         default y if SMP && PPC_PSERIES
 412
 413 config NODES_SHIFT
 414         int
 415         default "8" if PPC64
 416         default "4"
 417         depends on NEED_MULTIPLE_NODES
 418
 419 config ARCH_SELECT_MEMORY_MODEL
 420         def_bool y
 421         depends on PPC64
 422
 423 config ARCH_FLATMEM_ENABLE
 424         def_bool y
 425         depends on (PPC64 && !NUMA) || PPC32
 426
 427 config ARCH_SPARSEMEM_ENABLE
 428         def_bool y
 429         depends on PPC64
 430         select SPARSEMEM_VMEMMAP_ENABLE
 431
 432 config ARCH_SPARSEMEM_DEFAULT
 433         def_bool y
 434         depends on (SMP && PPC_PSERIES) || PPC_PS3
 435
 436 config SYS_SUPPORTS_HUGETLBFS
 437         bool
 438
 439 source "mm/Kconfig"
 440
 441 config ARCH_MEMORY_PROBE
 442         def_bool y
 443         depends on MEMORY_HOTPLUG
 444
 445 # Some NUMA nodes have memory ranges that span
 446 # other nodes.  Even though a pfn is valid and
 447 # between a node's start and end pfns, it may not
 448 # reside on that node.  See memmap_init_zone()
 449 # for details.
 450 config NODES_SPAN_OTHER_NODES
 451         def_bool y
 452         depends on NEED_MULTIPLE_NODES
 453
 454 config PPC_HAS_HASH_64K
 455         bool
 456         depends on PPC64
 457         default n
 458
 459 config STDBINUTILS
 460         bool "Using standard binutils settings"
 461         depends on 44x
 462         default y
 463         help
 464           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 465           Note, that kernel will be able to run only those applications,
 466           which had been compiled using binutils later than 2.17.50.0.3 with
 467           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 468           the older binutils, you can patch them with a trivial patch, which
 469           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 470
 471 choice
 472         prompt "Page size"
 473         default PPC_4K_PAGES
 474         help
 475           Select the kernel logical page size. Increasing the page size
 476           will reduce software overhead at each page boundary, allow
 477           hardware prefetch mechanisms to be more effective, and allow
 478           larger dma transfers increasing IO efficiency and reducing
 479           overhead. However the utilization of memory will increase.
 480           For example, each cached file will using a multiple of the
 481           page size to hold its contents and the difference between the
 482           end of file and the end of page is wasted.
 483
 484           Some dedicated systems, such as software raid serving with
 485           accelerated calculations, have shown significant increases.
 486
 487           If you configure a 64 bit kernel for 64k pages but the
 488           processor does not support them, then the kernel will simulate
 489           them with 4k pages, loading them on demand, but with the
 490           reduced software overhead and larger internal fragmentation.
 491           For the 32 bit kernel, a large page option will not be offered
 492           unless it is supported by the configured processor.
 493
 494           If unsure, choose 4K_PAGES.
 495
 496 config PPC_4K_PAGES
 497         bool "4k page size"
 498
 499 config PPC_16K_PAGES
 500         bool "16k page size" if 44x
 501
 502 config PPC_64K_PAGES
 503         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 504         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 505
 506 config PPC_256K_PAGES
 507         bool "256k page size" if 44x
 508         depends on !STDBINUTILS
 509         help
 510           Make the page size 256k.
 511
 512           As the ELF standard only requires alignment to support page
 513           sizes up to 64k, you will need to compile all of your user
 514           space applications with a non-standard binutils settings
 515           (see the STDBINUTILS description for details).
 516
 517           Say N unless you know what you are doing.
 518
 519 endchoice
 520
 521 config FORCE_MAX_ZONEORDER
 522         int "Maximum zone order"
 523         range 9 64 if PPC64 && PPC_64K_PAGES
 524         default "9" if PPC64 && PPC_64K_PAGES
 525         range 13 64 if PPC64 && !PPC_64K_PAGES
 526         default "13" if PPC64 && !PPC_64K_PAGES
 527         range 9 64 if PPC32 && PPC_16K_PAGES
 528         default "9" if PPC32 && PPC_16K_PAGES
 529         range 7 64 if PPC32 && PPC_64K_PAGES
 530         default "7" if PPC32 && PPC_64K_PAGES
 531         range 5 64 if PPC32 && PPC_256K_PAGES
 532         default "5" if PPC32 && PPC_256K_PAGES
 533         range 11 64
 534         default "11"
 535         help
 536           The kernel memory allocator divides physically contiguous memory
 537           blocks into "zones", where each zone is a power of two number of
 538           pages.  This option selects the largest power of two that the kernel
 539           keeps in the memory allocator.  If you need to allocate very large
 540           blocks of physically contiguous memory, then you may need to
 541           increase this value.
 542
 543           This config option is actually maximum order plus one. For example,
 544           a value of 11 means that the largest free memory block is 2^10 pages.
 545
 546           The page size is not necessarily 4KB.  For example, on 64-bit
 547           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 548           this in mind when choosing a value for this option.
 549
 550 config PPC_SUBPAGE_PROT
 551         bool "Support setting protections for 4k subpages"
 552         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 553         help
 554           This option adds support for a system call to allow user programs
 555           to set access permissions (read/write, readonly, or no access)
 556           on the 4k subpages of each 64k page.
 557
 558 config SCHED_SMT
 559         bool "SMT (Hyperthreading) scheduler support"
 560         depends on PPC64 && SMP
 561         help
 562           SMT scheduler support improves the CPU scheduler's decision making
 563           when dealing with POWER5 cpus at a cost of slightly increased
 564           overhead in some places. If unsure say N here.
 565
 566 config PPC_DENORMALISATION
 567         bool "PowerPC denormalisation exception handling"
 568         depends on PPC_BOOK3S_64
 569         default "n"
 570         ---help---
 571           Add support for handling denormalisation of single precision
 572           values.  Useful for bare metal only.  If unsure say Y here.
 573
 574 config CMDLINE_BOOL
 575         bool "Default bootloader kernel arguments"
 576
 577 config CMDLINE
 578         string "Initial kernel command string"
 579         depends on CMDLINE_BOOL
 580         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 581         help
 582           On some platforms, there is currently no way for the boot loader to
 583           pass arguments to the kernel. For these platforms, you can supply
 584           some command-line options at build time by entering them here.  In
 585           most cases you will need to specify the root device here.
 586
 587 config EXTRA_TARGETS
 588         string "Additional default image types"
 589         help
 590           List additional targets to be built by the bootwrapper here (separated
 591           by spaces).  This is useful for targets that depend of device tree
 592           files in the .dts directory.
 593
 594           Targets in this list will be build as part of the default build
 595           target, or when the user does a 'make zImage' or a
 596           'make zImage.initrd'.
 597
 598           If unsure, leave blank
 599
 600 config ARCH_WANTS_FREEZER_CONTROL
 601         def_bool y
 602         depends on ADB_PMU
 603
 604 source kernel/power/Kconfig
 605
 606 config SECCOMP
 607         bool "Enable seccomp to safely compute untrusted bytecode"
 608         depends on PROC_FS
 609         default y
 610         help
 611           This kernel feature is useful for number crunching applications
 612           that may need to compute untrusted bytecode during their
 613           execution. By using pipes or other transports made available to
 614           the process as file descriptors supporting the read/write
 615           syscalls, it's possible to isolate those applications in
 616           their own address space using seccomp. Once seccomp is
 617           enabled via /proc/<pid>/seccomp, it cannot be disabled
 618           and the task is only allowed to execute a few safe syscalls
 619           defined by each seccomp mode.
 620
 621           If unsure, say Y. Only embedded should say N here.
 622
 623 endmenu
 624
 625 config ISA_DMA_API
 626         bool
 627         default PCI
 628
 629 menu "Bus options"
 630
 631 config ISA
 632         bool "Support for ISA-bus hardware"
 633         depends on PPC_CHRP
 634         select PPC_I8259
 635         help
 636           Find out whether you have ISA slots on your motherboard.  ISA is the
 637           name of a bus system, i.e. the way the CPU talks to the other stuff
 638           inside your box.  If you have an Apple machine, say N here; if you
 639           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 640           embedded board, consult your board documentation.
 641
 642 config ZONE_DMA
 643         bool
 644         default y
 645
 646 config NEED_DMA_MAP_STATE
 647         def_bool (PPC64 || NOT_COHERENT_CACHE)
 648
 649 config NEED_SG_DMA_LENGTH
 650         def_bool y
 651
 652 config GENERIC_ISA_DMA
 653         bool
 654         depends on ISA_DMA_API
 655         default y
 656
 657 config PPC_INDIRECT_PCI
 658         bool
 659         depends on PCI
 660         default y if 40x || 44x
 661         default n
 662
 663 config EISA
 664         bool
 665
 666 config SBUS
 667         bool
 668
 669 config FSL_SOC
 670         bool
 671         select HAVE_CAN_FLEXCAN if NET && CAN
 672
 673 config FSL_PCI
 674         bool
 675         select PPC_INDIRECT_PCI
 676         select PCI_QUIRKS
 677
 678 config FSL_PMC
 679         bool
 680         default y
 681         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 682         help
 683           Freescale MPC85xx/MPC86xx power management controller support
 684           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 685
 686 config PPC4xx_CPM
 687         bool
 688         default y
 689         depends on SUSPEND && (44x || 40x)
 690         help
 691           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 692           It also enables support for two different idle states (idle-wait
 693           and idle-doze).
 694
 695 config 4xx_SOC
 696         bool
 697
 698 config FSL_LBC
 699         bool "Freescale Local Bus support"
 700         depends on FSL_SOC
 701         help
 702           Enables reporting of errors from the Freescale local bus
 703           controller.  Also contains some common code used by
 704           drivers for specific local bus peripherals.
 705
 706 config FSL_IFC
 707         bool
 708         depends on FSL_SOC
 709
 710 config FSL_GTM
 711         bool
 712         depends on PPC_83xx || QUICC_ENGINE || CPM2
 713         help
 714           Freescale General-purpose Timers support
 715
 716 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 717 config MCA
 718         bool
 719
 720 # Platforms that what PCI turned unconditionally just do select PCI
 721 # in their config node.  Platforms that want to choose at config
 722 # time should select PPC_PCI_CHOICE
 723 config PPC_PCI_CHOICE
 724         bool
 725
 726 config PCI
 727         bool "PCI support" if PPC_PCI_CHOICE
 728         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 729                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 730         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 731         select ARCH_SUPPORTS_MSI
 732         select GENERIC_PCI_IOMAP
 733         help
 734           Find out whether your system includes a PCI bus. PCI is the name of
 735           a bus system, i.e. the way the CPU talks to the other stuff inside
 736           your box.  If you say Y here, the kernel will include drivers and
 737           infrastructure code to support PCI bus devices.
 738
 739 config PCI_DOMAINS
 740         def_bool PCI
 741
 742 config PCI_SYSCALL
 743         def_bool PCI
 744
 745 config PCI_QSPAN
 746         bool "QSpan PCI"
 747         depends on !4xx && !CPM2 && 8xx
 748         select PPC_I8259
 749         help
 750           Say Y here if you have a system based on a Motorola 8xx-series
 751           embedded processor with a QSPAN PCI interface, otherwise say N.
 752
 753 config PCI_8260
 754         bool
 755         depends on PCI && 8260
 756         select PPC_INDIRECT_PCI
 757         default y
 758
 759 source "drivers/pci/pcie/Kconfig"
 760
 761 source "drivers/pci/Kconfig"
 762
 763 source "drivers/pcmcia/Kconfig"
 764
 765 source "drivers/pci/hotplug/Kconfig"
 766
 767 config HAS_RAPIDIO
 768         bool
 769         default n
 770
 771 config RAPIDIO
 772         bool "RapidIO support"
 773         depends on HAS_RAPIDIO || PCI
 774         help
 775           If you say Y here, the kernel will include drivers and
 776           infrastructure code to support RapidIO interconnect devices.
 777
 778 config FSL_RIO
 779         bool "Freescale Embedded SRIO Controller support"
 780         depends on RAPIDIO && HAS_RAPIDIO
 781         default "n"
 782         ---help---
 783           Include support for RapidIO controller on Freescale embedded
 784           processors (MPC8548, MPC8641, etc).
 785
 786 source "drivers/rapidio/Kconfig"
 787
 788 endmenu
 789
 790 config NONSTATIC_KERNEL
 791         bool
 792         default n
 793
 794 menu "Advanced setup"
 795         depends on PPC32
 796
 797 config ADVANCED_OPTIONS
 798         bool "Prompt for advanced kernel configuration options"
 799         help
 800           This option will enable prompting for a variety of advanced kernel
 801           configuration options.  These options can cause the kernel to not
 802           work if they are set incorrectly, but can be used to optimize certain
 803           aspects of kernel memory management.
 804
 805           Unless you know what you are doing, say N here.
 806
 807 comment "Default settings for advanced configuration options are used"
 808         depends on !ADVANCED_OPTIONS
 809
 810 config LOWMEM_SIZE_BOOL
 811         bool "Set maximum low memory"
 812         depends on ADVANCED_OPTIONS
 813         help
 814           This option allows you to set the maximum amount of memory which
 815           will be used as "low memory", that is, memory which the kernel can
 816           access directly, without having to set up a kernel virtual mapping.
 817           This can be useful in optimizing the layout of kernel virtual
 818           memory.
 819
 820           Say N here unless you know what you are doing.
 821
 822 config LOWMEM_SIZE
 823         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 824         default "0x30000000"
 825
 826 config LOWMEM_CAM_NUM_BOOL
 827         bool "Set number of CAMs to use to map low memory"
 828         depends on ADVANCED_OPTIONS && FSL_BOOKE
 829         help
 830           This option allows you to set the maximum number of CAM slots that
 831           will be used to map low memory.  There are a limited number of slots
 832           available and even more limited number that will fit in the L1 MMU.
 833           However, using more entries will allow mapping more low memory.  This
 834           can be useful in optimizing the layout of kernel virtual memory.
 835
 836           Say N here unless you know what you are doing.
 837
 838 config LOWMEM_CAM_NUM
 839         depends on FSL_BOOKE
 840         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 841         default 3
 842
 843 config DYNAMIC_MEMSTART
 844         bool "Enable page aligned dynamic load address for kernel"
 845         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 846         select NONSTATIC_KERNEL
 847         help
 848           This option enables the kernel to be loaded at any page aligned
 849           physical address. The kernel creates a mapping from KERNELBASE to
 850           the address where the kernel is loaded. The page size here implies
 851           the TLB page size of the mapping for kernel on the particular platform.
 852           Please refer to the init code for finding the TLB page size.
 853
 854           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 855           kernel image, where the only restriction is the page aligned kernel
 856           load address. When this option is enabled, the compile time physical
 857           address CONFIG_PHYSICAL_START is ignored.
 858
 859           This option is overridden by CONFIG_RELOCATABLE
 860
 861 config RELOCATABLE
 862         bool "Build a relocatable kernel"
 863         depends on ADVANCED_OPTIONS && FLATMEM && 44x
 864         select NONSTATIC_KERNEL
 865         help
 866           This builds a kernel image that is capable of running at the
 867           location the kernel is loaded at, without any alignment restrictions.
 868           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 869
 870           One use is for the kexec on panic case where the recovery kernel
 871           must live at a different physical address than the primary
 872           kernel.
 873
 874           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 875           it has been loaded at and the compile time physical addresses
 876           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 877           setting can still be useful to bootwrappers that need to know the
 878           load address of the kernel (eg. u-boot/mkimage).
 879
 880 config RELOCATABLE_PPC32
 881         def_bool y
 882         depends on PPC32 && RELOCATABLE
 883
 884 config PAGE_OFFSET_BOOL
 885         bool "Set custom page offset address"
 886         depends on ADVANCED_OPTIONS
 887         help
 888           This option allows you to set the kernel virtual address at which
 889           the kernel will map low memory.  This can be useful in optimizing
 890           the virtual memory layout of the system.
 891
 892           Say N here unless you know what you are doing.
 893
 894 config PAGE_OFFSET
 895         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 896         default "0xc0000000"
 897
 898 config KERNEL_START_BOOL
 899         bool "Set custom kernel base address"
 900         depends on ADVANCED_OPTIONS
 901         help
 902           This option allows you to set the kernel virtual address at which
 903           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 904           however there are times (like kdump) that one might not want them
 905           to be the same.
 906
 907           Say N here unless you know what you are doing.
 908
 909 config KERNEL_START
 910         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 911         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 912         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 913         default "0xc0000000"
 914
 915 config PHYSICAL_START_BOOL
 916         bool "Set physical address where the kernel is loaded"
 917         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 918         help
 919           This gives the physical address where the kernel is loaded.
 920
 921           Say N here unless you know what you are doing.
 922
 923 config PHYSICAL_START
 924         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 925         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 926         default "0x00000000"
 927
 928 config PHYSICAL_ALIGN
 929         hex
 930         default "0x04000000" if FSL_BOOKE
 931         help
 932           This value puts the alignment restrictions on physical address
 933           where kernel is loaded and run from. Kernel is compiled for an
 934           address which meets above alignment restriction.
 935
 936 config TASK_SIZE_BOOL
 937         bool "Set custom user task size"
 938         depends on ADVANCED_OPTIONS
 939         help
 940           This option allows you to set the amount of virtual address space
 941           allocated to user tasks.  This can be useful in optimizing the
 942           virtual memory layout of the system.
 943
 944           Say N here unless you know what you are doing.
 945
 946 config TASK_SIZE
 947         hex "Size of user task space" if TASK_SIZE_BOOL
 948         default "0x80000000" if PPC_8xx
 949         default "0xc0000000"
 950
 951 config CONSISTENT_SIZE_BOOL
 952         bool "Set custom consistent memory pool size"
 953         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 954         help
 955           This option allows you to set the size of the
 956           consistent memory pool.  This pool of virtual memory
 957           is used to make consistent memory allocations.
 958
 959 config CONSISTENT_SIZE
 960         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 961         default "0x00200000" if NOT_COHERENT_CACHE
 962
 963 config PIN_TLB
 964         bool "Pinned Kernel TLBs (860 ONLY)"
 965         depends on ADVANCED_OPTIONS && 8xx
 966 endmenu
 967
 968 if PPC64
 969 config RELOCATABLE
 970         bool "Build a relocatable kernel"
 971         select NONSTATIC_KERNEL
 972         help
 973           This builds a kernel image that is capable of running anywhere
 974           in the RMA (real memory area) at any 16k-aligned base address.
 975           The kernel is linked as a position-independent executable (PIE)
 976           and contains dynamic relocations which are processed early
 977           in the bootup process.
 978
 979           One use is for the kexec on panic case where the recovery kernel
 980           must live at a different physical address than the primary
 981           kernel.
 982
 983 config PAGE_OFFSET
 984         hex
 985         default "0xc000000000000000"
 986 config KERNEL_START
 987         hex
 988         default "0xc000000000000000"
 989 config PHYSICAL_START
 990         hex
 991         default "0x00000000"
 992 endif
 993
 994 source "net/Kconfig"
 995
 996 source "drivers/Kconfig"
 997
 998 source "fs/Kconfig"
 999
1000 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1001
1002 source "lib/Kconfig"
1003
1004 source "arch/powerpc/Kconfig.debug"
1005
1006 source "security/Kconfig"
1007
1008 config KEYS_COMPAT
1009         bool
1010         depends on COMPAT && KEYS
1011         default y
1012
1013 source "crypto/Kconfig"
1014
1015 config PPC_CLOCK
1016         bool
1017         default n
1018         select HAVE_CLK
1019
1020 config PPC_LIB_RHEAP
1021         bool
1022
1023 source "arch/powerpc/kvm/Kconfig"