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 GENERIC_GPIO
  86         bool
  87         help
  88           Generic GPIO API support
  89
  90 config ARCH_NO_VIRT_TO_BUS
  91         def_bool PPC64
  92
  93 config PPC
  94         bool
  95         default y
  96         select OF
  97         select OF_EARLY_FLATTREE
  98         select HAVE_FTRACE_MCOUNT_RECORD
  99         select HAVE_DYNAMIC_FTRACE
 100         select HAVE_FUNCTION_TRACER
 101         select HAVE_FUNCTION_GRAPH_TRACER
 102         select SYSCTL_EXCEPTION_TRACE
 103         select ARCH_WANT_OPTIONAL_GPIOLIB
 104         select HAVE_IDE
 105         select HAVE_IOREMAP_PROT
 106         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 107         select HAVE_KPROBES
 108         select HAVE_ARCH_KGDB
 109         select HAVE_KRETPROBES
 110         select HAVE_ARCH_TRACEHOOK
 111         select HAVE_MEMBLOCK
 112         select HAVE_MEMBLOCK_NODE_MAP
 113         select HAVE_DMA_ATTRS
 114         select HAVE_DMA_API_DEBUG
 115         select USE_GENERIC_SMP_HELPERS if SMP
 116         select HAVE_OPROFILE
 117         select HAVE_DEBUG_KMEMLEAK
 118         select HAVE_SYSCALL_WRAPPERS if PPC64
 119         select GENERIC_ATOMIC64 if PPC32
 120         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 121         select HAVE_IRQ_WORK
 122         select HAVE_PERF_EVENTS
 123         select HAVE_REGS_AND_STACK_ACCESS_API
 124         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 125         select HAVE_GENERIC_HARDIRQS
 126         select ARCH_WANT_IPC_PARSE_VERSION
 127         select SPARSE_IRQ
 128         select IRQ_PER_CPU
 129         select IRQ_DOMAIN
 130         select GENERIC_IRQ_SHOW
 131         select GENERIC_IRQ_SHOW_LEVEL
 132         select IRQ_FORCED_THREADING
 133         select HAVE_RCU_TABLE_FREE if SMP
 134         select HAVE_SYSCALL_TRACEPOINTS
 135         select HAVE_BPF_JIT if PPC64
 136         select HAVE_ARCH_JUMP_LABEL
 137         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 138         select GENERIC_SMP_IDLE_THREAD
 139         select GENERIC_CMOS_UPDATE
 140         select GENERIC_TIME_VSYSCALL_OLD
 141         select GENERIC_CLOCKEVENTS
 142         select GENERIC_STRNCPY_FROM_USER
 143         select GENERIC_STRNLEN_USER
 144         select GENERIC_KERNEL_THREAD
 145
 146 config EARLY_PRINTK
 147         bool
 148         default y
 149
 150 config COMPAT
 151         bool
 152         default y if PPC64
 153         select COMPAT_BINFMT_ELF
 154         select ARCH_WANT_OLD_COMPAT_IPC
 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 && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 222                    || 44x || 40x
 223
 224 config PPC_DCR_NATIVE
 225         bool
 226         default n
 227
 228 config PPC_DCR_MMIO
 229         bool
 230         default n
 231
 232 config PPC_DCR
 233         bool
 234         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 235         default y
 236
 237 config PPC_OF_PLATFORM_PCI
 238         bool
 239         depends on PCI
 240         depends on PPC64 # not supported on 32 bits yet
 241         default n
 242
 243 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 244         def_bool y
 245
 246 config ARCH_SUPPORTS_UPROBES
 247         def_bool y
 248
 249 config PPC_ADV_DEBUG_REGS
 250         bool
 251         depends on 40x || BOOKE
 252         default y
 253
 254 config PPC_ADV_DEBUG_IACS
 255         int
 256         depends on PPC_ADV_DEBUG_REGS
 257         default 4 if 44x
 258         default 2
 259
 260 config PPC_ADV_DEBUG_DACS
 261         int
 262         depends on PPC_ADV_DEBUG_REGS
 263         default 2
 264
 265 config PPC_ADV_DEBUG_DVCS
 266         int
 267         depends on PPC_ADV_DEBUG_REGS
 268         default 2 if 44x
 269         default 0
 270
 271 config PPC_ADV_DEBUG_DAC_RANGE
 272         bool
 273         depends on PPC_ADV_DEBUG_REGS && 44x
 274         default y
 275
 276 source "init/Kconfig"
 277
 278 source "kernel/Kconfig.freezer"
 279
 280 source "arch/powerpc/sysdev/Kconfig"
 281 source "arch/powerpc/platforms/Kconfig"
 282
 283 menu "Kernel options"
 284
 285 config HIGHMEM
 286         bool "High memory support"
 287         depends on PPC32
 288
 289 source kernel/Kconfig.hz
 290 source kernel/Kconfig.preempt
 291 source "fs/Kconfig.binfmt"
 292
 293 config HUGETLB_PAGE_SIZE_VARIABLE
 294         bool
 295         depends on HUGETLB_PAGE
 296         default y
 297
 298 config MATH_EMULATION
 299         bool "Math emulation"
 300         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 301         ---help---
 302           Some PowerPC chips designed for embedded applications do not have
 303           a floating-point unit and therefore do not implement the
 304           floating-point instructions in the PowerPC instruction set.  If you
 305           say Y here, the kernel will include code to emulate a floating-point
 306           unit, which will allow programs that use floating-point
 307           instructions to run.
 308
 309 config 8XX_MINIMAL_FPEMU
 310         bool "Minimal math emulation for 8xx"
 311         depends on 8xx && !MATH_EMULATION
 312         help
 313           Older arch/ppc kernels still emulated a few floating point
 314           instructions such as load and store, even when full math
 315           emulation is disabled.  Say "Y" here if you want to preserve
 316           this behavior.
 317
 318           It is recommended that you build a soft-float userspace instead.
 319
 320 config IOMMU_HELPER
 321         def_bool PPC64
 322
 323 config SWIOTLB
 324         bool "SWIOTLB support"
 325         default n
 326         select IOMMU_HELPER
 327         ---help---
 328           Support for IO bounce buffering for systems without an IOMMU.
 329           This allows us to DMA to the full physical address space on
 330           platforms where the size of a physical address is larger
 331           than the bus address.  Not all platforms support this.
 332
 333 config HOTPLUG_CPU
 334         bool "Support for enabling/disabling CPUs"
 335         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
 336         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 337         ---help---
 338           Say Y here to be able to disable and re-enable individual
 339           CPUs at runtime on SMP machines.
 340
 341           Say N if you are unsure.
 342
 343 config ARCH_CPU_PROBE_RELEASE
 344         def_bool y
 345         depends on HOTPLUG_CPU
 346
 347 config ARCH_ENABLE_MEMORY_HOTPLUG
 348         def_bool y
 349
 350 config ARCH_HAS_WALK_MEMORY
 351         def_bool y
 352
 353 config ARCH_ENABLE_MEMORY_HOTREMOVE
 354         def_bool y
 355
 356 config KEXEC
 357         bool "kexec system call (EXPERIMENTAL)"
 358         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
 359         help
 360           kexec is a system call that implements the ability to shutdown your
 361           current kernel, and to start another kernel.  It is like a reboot
 362           but it is independent of the system firmware.   And like a reboot
 363           you can start any kernel with it, not just Linux.
 364
 365           The name comes from the similarity to the exec system call.
 366
 367           It is an ongoing process to be certain the hardware in a machine
 368           is properly shutdown, so do not be surprised if this code does not
 369           initially work for you.  It may help to enable device hotplugging
 370           support.  As of this writing the exact hardware interface is
 371           strongly in flux, so no good recommendation can be made.
 372
 373 config CRASH_DUMP
 374         bool "Build a kdump crash kernel"
 375         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 376         select RELOCATABLE if PPC64 || 44x
 377         select DYNAMIC_MEMSTART if FSL_BOOKE
 378         help
 379           Build a kernel suitable for use as a kdump capture kernel.
 380           The same kernel binary can be used as production kernel and dump
 381           capture kernel.
 382
 383 config FA_DUMP
 384         bool "Firmware-assisted dump"
 385         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 386         help
 387           A robust mechanism to get reliable kernel crash dump with
 388           assistance from firmware. This approach does not use kexec,
 389           instead firmware assists in booting the kdump kernel
 390           while preserving memory contents. Firmware-assisted dump
 391           is meant to be a kdump replacement offering robustness and
 392           speed not possible without system firmware assistance.
 393
 394           If unsure, say "N"
 395
 396 config IRQ_ALL_CPUS
 397         bool "Distribute interrupts on all CPUs by default"
 398         depends on SMP && !MV64360
 399         help
 400           This option gives the kernel permission to distribute IRQs across
 401           multiple CPUs.  Saying N here will route all IRQs to the first
 402           CPU.  Generally saying Y is safe, although some problems have been
 403           reported with SMP Power Macintoshes with this option enabled.
 404
 405 config NUMA
 406         bool "NUMA support"
 407         depends on PPC64
 408         default y if SMP && PPC_PSERIES
 409
 410 config NODES_SHIFT
 411         int
 412         default "8" if PPC64
 413         default "4"
 414         depends on NEED_MULTIPLE_NODES
 415
 416 config MAX_ACTIVE_REGIONS
 417         int
 418         default "256" if PPC64
 419         default "32"
 420
 421 config ARCH_SELECT_MEMORY_MODEL
 422         def_bool y
 423         depends on PPC64
 424
 425 config ARCH_FLATMEM_ENABLE
 426         def_bool y
 427         depends on (PPC64 && !NUMA) || PPC32
 428
 429 config ARCH_SPARSEMEM_ENABLE
 430         def_bool y
 431         depends on PPC64
 432         select SPARSEMEM_VMEMMAP_ENABLE
 433
 434 config ARCH_SPARSEMEM_DEFAULT
 435         def_bool y
 436         depends on (SMP && PPC_PSERIES) || PPC_PS3
 437
 438 config SYS_SUPPORTS_HUGETLBFS
 439         bool
 440
 441 source "mm/Kconfig"
 442
 443 config ARCH_MEMORY_PROBE
 444         def_bool y
 445         depends on MEMORY_HOTPLUG
 446
 447 # Some NUMA nodes have memory ranges that span
 448 # other nodes.  Even though a pfn is valid and
 449 # between a node's start and end pfns, it may not
 450 # reside on that node.  See memmap_init_zone()
 451 # for details.
 452 config NODES_SPAN_OTHER_NODES
 453         def_bool y
 454         depends on NEED_MULTIPLE_NODES
 455
 456 config PPC_HAS_HASH_64K
 457         bool
 458         depends on PPC64
 459         default n
 460
 461 config STDBINUTILS
 462         bool "Using standard binutils settings"
 463         depends on 44x
 464         default y
 465         help
 466           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 467           Note, that kernel will be able to run only those applications,
 468           which had been compiled using binutils later than 2.17.50.0.3 with
 469           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 470           the older binutils, you can patch them with a trivial patch, which
 471           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 472
 473 choice
 474         prompt "Page size"
 475         default PPC_4K_PAGES
 476         help
 477           Select the kernel logical page size. Increasing the page size
 478           will reduce software overhead at each page boundary, allow
 479           hardware prefetch mechanisms to be more effective, and allow
 480           larger dma transfers increasing IO efficiency and reducing
 481           overhead. However the utilization of memory will increase.
 482           For example, each cached file will using a multiple of the
 483           page size to hold its contents and the difference between the
 484           end of file and the end of page is wasted.
 485
 486           Some dedicated systems, such as software raid serving with
 487           accelerated calculations, have shown significant increases.
 488
 489           If you configure a 64 bit kernel for 64k pages but the
 490           processor does not support them, then the kernel will simulate
 491           them with 4k pages, loading them on demand, but with the
 492           reduced software overhead and larger internal fragmentation.
 493           For the 32 bit kernel, a large page option will not be offered
 494           unless it is supported by the configured processor.
 495
 496           If unsure, choose 4K_PAGES.
 497
 498 config PPC_4K_PAGES
 499         bool "4k page size"
 500
 501 config PPC_16K_PAGES
 502         bool "16k page size" if 44x
 503
 504 config PPC_64K_PAGES
 505         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 506         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 507
 508 config PPC_256K_PAGES
 509         bool "256k page size" if 44x
 510         depends on !STDBINUTILS
 511         help
 512           Make the page size 256k.
 513
 514           As the ELF standard only requires alignment to support page
 515           sizes up to 64k, you will need to compile all of your user
 516           space applications with a non-standard binutils settings
 517           (see the STDBINUTILS description for details).
 518
 519           Say N unless you know what you are doing.
 520
 521 endchoice
 522
 523 config FORCE_MAX_ZONEORDER
 524         int "Maximum zone order"
 525         range 9 64 if PPC64 && PPC_64K_PAGES
 526         default "9" if PPC64 && PPC_64K_PAGES
 527         range 13 64 if PPC64 && !PPC_64K_PAGES
 528         default "13" if PPC64 && !PPC_64K_PAGES
 529         range 9 64 if PPC32 && PPC_16K_PAGES
 530         default "9" if PPC32 && PPC_16K_PAGES
 531         range 7 64 if PPC32 && PPC_64K_PAGES
 532         default "7" if PPC32 && PPC_64K_PAGES
 533         range 5 64 if PPC32 && PPC_256K_PAGES
 534         default "5" if PPC32 && PPC_256K_PAGES
 535         range 11 64
 536         default "11"
 537         help
 538           The kernel memory allocator divides physically contiguous memory
 539           blocks into "zones", where each zone is a power of two number of
 540           pages.  This option selects the largest power of two that the kernel
 541           keeps in the memory allocator.  If you need to allocate very large
 542           blocks of physically contiguous memory, then you may need to
 543           increase this value.
 544
 545           This config option is actually maximum order plus one. For example,
 546           a value of 11 means that the largest free memory block is 2^10 pages.
 547
 548           The page size is not necessarily 4KB.  For example, on 64-bit
 549           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 550           this in mind when choosing a value for this option.
 551
 552 config PPC_SUBPAGE_PROT
 553         bool "Support setting protections for 4k subpages"
 554         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 555         help
 556           This option adds support for a system call to allow user programs
 557           to set access permissions (read/write, readonly, or no access)
 558           on the 4k subpages of each 64k page.
 559
 560 config SCHED_SMT
 561         bool "SMT (Hyperthreading) scheduler support"
 562         depends on PPC64 && SMP
 563         help
 564           SMT scheduler support improves the CPU scheduler's decision making
 565           when dealing with POWER5 cpus at a cost of slightly increased
 566           overhead in some places. If unsure say N here.
 567
 568 config PPC_DENORMALISATION
 569         bool "PowerPC denormalisation exception handling"
 570         depends on PPC_BOOK3S_64
 571         default "n"
 572         ---help---
 573           Add support for handling denormalisation of single precision
 574           values.  Useful for bare metal only.  If unsure say Y here.
 575
 576 config CMDLINE_BOOL
 577         bool "Default bootloader kernel arguments"
 578
 579 config CMDLINE
 580         string "Initial kernel command string"
 581         depends on CMDLINE_BOOL
 582         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 583         help
 584           On some platforms, there is currently no way for the boot loader to
 585           pass arguments to the kernel. For these platforms, you can supply
 586           some command-line options at build time by entering them here.  In
 587           most cases you will need to specify the root device here.
 588
 589 config EXTRA_TARGETS
 590         string "Additional default image types"
 591         help
 592           List additional targets to be built by the bootwrapper here (separated
 593           by spaces).  This is useful for targets that depend of device tree
 594           files in the .dts directory.
 595
 596           Targets in this list will be build as part of the default build
 597           target, or when the user does a 'make zImage' or a
 598           'make zImage.initrd'.
 599
 600           If unsure, leave blank
 601
 602 config ARCH_WANTS_FREEZER_CONTROL
 603         def_bool y
 604         depends on ADB_PMU
 605
 606 source kernel/power/Kconfig
 607
 608 config SECCOMP
 609         bool "Enable seccomp to safely compute untrusted bytecode"
 610         depends on PROC_FS
 611         default y
 612         help
 613           This kernel feature is useful for number crunching applications
 614           that may need to compute untrusted bytecode during their
 615           execution. By using pipes or other transports made available to
 616           the process as file descriptors supporting the read/write
 617           syscalls, it's possible to isolate those applications in
 618           their own address space using seccomp. Once seccomp is
 619           enabled via /proc/<pid>/seccomp, it cannot be disabled
 620           and the task is only allowed to execute a few safe syscalls
 621           defined by each seccomp mode.
 622
 623           If unsure, say Y. Only embedded should say N here.
 624
 625 endmenu
 626
 627 config ISA_DMA_API
 628         bool
 629         default PCI
 630
 631 menu "Bus options"
 632
 633 config ISA
 634         bool "Support for ISA-bus hardware"
 635         depends on PPC_PREP || PPC_CHRP
 636         select PPC_I8259
 637         help
 638           Find out whether you have ISA slots on your motherboard.  ISA is the
 639           name of a bus system, i.e. the way the CPU talks to the other stuff
 640           inside your box.  If you have an Apple machine, say N here; if you
 641           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 642           you have an embedded board, consult your board documentation.
 643
 644 config ZONE_DMA
 645         bool
 646         default y
 647
 648 config NEED_DMA_MAP_STATE
 649         def_bool (PPC64 || NOT_COHERENT_CACHE)
 650
 651 config NEED_SG_DMA_LENGTH
 652         def_bool y
 653
 654 config GENERIC_ISA_DMA
 655         bool
 656         depends on ISA_DMA_API
 657         default y
 658
 659 config PPC_INDIRECT_PCI
 660         bool
 661         depends on PCI
 662         default y if 40x || 44x
 663         default n
 664
 665 config EISA
 666         bool
 667
 668 config SBUS
 669         bool
 670
 671 config FSL_SOC
 672         bool
 673         select HAVE_CAN_FLEXCAN if NET && CAN
 674         select PPC_CLOCK
 675
 676 config FSL_PCI
 677         bool
 678         select PPC_INDIRECT_PCI
 679         select PCI_QUIRKS
 680
 681 config FSL_PMC
 682         bool
 683         default y
 684         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 685         help
 686           Freescale MPC85xx/MPC86xx power management controller support
 687           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 688
 689 config PPC4xx_CPM
 690         bool
 691         default y
 692         depends on SUSPEND && (44x || 40x)
 693         help
 694           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 695           It also enables support for two different idle states (idle-wait
 696           and idle-doze).
 697
 698 config 4xx_SOC
 699         bool
 700
 701 config FSL_LBC
 702         bool "Freescale Local Bus support"
 703         depends on FSL_SOC
 704         help
 705           Enables reporting of errors from the Freescale local bus
 706           controller.  Also contains some common code used by
 707           drivers for specific local bus peripherals.
 708
 709 config FSL_IFC
 710         bool
 711         depends on FSL_SOC
 712
 713 config FSL_GTM
 714         bool
 715         depends on PPC_83xx || QUICC_ENGINE || CPM2
 716         help
 717           Freescale General-purpose Timers support
 718
 719 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 720 config MCA
 721         bool
 722
 723 # Platforms that what PCI turned unconditionally just do select PCI
 724 # in their config node.  Platforms that want to choose at config
 725 # time should select PPC_PCI_CHOICE
 726 config PPC_PCI_CHOICE
 727         bool
 728
 729 config PCI
 730         bool "PCI support" if PPC_PCI_CHOICE
 731         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 732                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 733         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 734         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 735         select ARCH_SUPPORTS_MSI
 736         select GENERIC_PCI_IOMAP
 737         help
 738           Find out whether your system includes a PCI bus. PCI is the name of
 739           a bus system, i.e. the way the CPU talks to the other stuff inside
 740           your box.  If you say Y here, the kernel will include drivers and
 741           infrastructure code to support PCI bus devices.
 742
 743 config PCI_DOMAINS
 744         def_bool PCI
 745
 746 config PCI_SYSCALL
 747         def_bool PCI
 748
 749 config PCI_QSPAN
 750         bool "QSpan PCI"
 751         depends on !4xx && !CPM2 && 8xx
 752         select PPC_I8259
 753         help
 754           Say Y here if you have a system based on a Motorola 8xx-series
 755           embedded processor with a QSPAN PCI interface, otherwise say N.
 756
 757 config PCI_8260
 758         bool
 759         depends on PCI && 8260
 760         select PPC_INDIRECT_PCI
 761         default y
 762
 763 config 8260_PCI9
 764         bool "Enable workaround for MPC826x erratum PCI 9"
 765         depends on PCI_8260 && !8272
 766         default y
 767
 768 source "drivers/pci/pcie/Kconfig"
 769
 770 source "drivers/pci/Kconfig"
 771
 772 source "drivers/pcmcia/Kconfig"
 773
 774 source "drivers/pci/hotplug/Kconfig"
 775
 776 config HAS_RAPIDIO
 777         bool
 778         default n
 779
 780 config RAPIDIO
 781         bool "RapidIO support"
 782         depends on HAS_RAPIDIO || PCI
 783         help
 784           If you say Y here, the kernel will include drivers and
 785           infrastructure code to support RapidIO interconnect devices.
 786
 787 config FSL_RIO
 788         bool "Freescale Embedded SRIO Controller support"
 789         depends on RAPIDIO && HAS_RAPIDIO
 790         default "n"
 791         ---help---
 792           Include support for RapidIO controller on Freescale embedded
 793           processors (MPC8548, MPC8641, etc).
 794
 795 source "drivers/rapidio/Kconfig"
 796
 797 endmenu
 798
 799 config NONSTATIC_KERNEL
 800         bool
 801         default n
 802
 803 menu "Advanced setup"
 804         depends on PPC32
 805
 806 config ADVANCED_OPTIONS
 807         bool "Prompt for advanced kernel configuration options"
 808         help
 809           This option will enable prompting for a variety of advanced kernel
 810           configuration options.  These options can cause the kernel to not
 811           work if they are set incorrectly, but can be used to optimize certain
 812           aspects of kernel memory management.
 813
 814           Unless you know what you are doing, say N here.
 815
 816 comment "Default settings for advanced configuration options are used"
 817         depends on !ADVANCED_OPTIONS
 818
 819 config LOWMEM_SIZE_BOOL
 820         bool "Set maximum low memory"
 821         depends on ADVANCED_OPTIONS
 822         help
 823           This option allows you to set the maximum amount of memory which
 824           will be used as "low memory", that is, memory which the kernel can
 825           access directly, without having to set up a kernel virtual mapping.
 826           This can be useful in optimizing the layout of kernel virtual
 827           memory.
 828
 829           Say N here unless you know what you are doing.
 830
 831 config LOWMEM_SIZE
 832         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 833         default "0x30000000"
 834
 835 config LOWMEM_CAM_NUM_BOOL
 836         bool "Set number of CAMs to use to map low memory"
 837         depends on ADVANCED_OPTIONS && FSL_BOOKE
 838         help
 839           This option allows you to set the maximum number of CAM slots that
 840           will be used to map low memory.  There are a limited number of slots
 841           available and even more limited number that will fit in the L1 MMU.
 842           However, using more entries will allow mapping more low memory.  This
 843           can be useful in optimizing the layout of kernel virtual memory.
 844
 845           Say N here unless you know what you are doing.
 846
 847 config LOWMEM_CAM_NUM
 848         depends on FSL_BOOKE
 849         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 850         default 3
 851
 852 config DYNAMIC_MEMSTART
 853         bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 854         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 855         select NONSTATIC_KERNEL
 856         help
 857           This option enables the kernel to be loaded at any page aligned
 858           physical address. The kernel creates a mapping from KERNELBASE to
 859           the address where the kernel is loaded. The page size here implies
 860           the TLB page size of the mapping for kernel on the particular platform.
 861           Please refer to the init code for finding the TLB page size.
 862
 863           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 864           kernel image, where the only restriction is the page aligned kernel
 865           load address. When this option is enabled, the compile time physical
 866           address CONFIG_PHYSICAL_START is ignored.
 867
 868           This option is overridden by CONFIG_RELOCATABLE
 869
 870 config RELOCATABLE
 871         bool "Build a relocatable kernel (EXPERIMENTAL)"
 872         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
 873         select NONSTATIC_KERNEL
 874         help
 875           This builds a kernel image that is capable of running at the
 876           location the kernel is loaded at, without any alignment restrictions.
 877           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 878
 879           One use is for the kexec on panic case where the recovery kernel
 880           must live at a different physical address than the primary
 881           kernel.
 882
 883           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 884           it has been loaded at and the compile time physical addresses
 885           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 886           setting can still be useful to bootwrappers that need to know the
 887           load address of the kernel (eg. u-boot/mkimage).
 888
 889 config RELOCATABLE_PPC32
 890         def_bool y
 891         depends on PPC32 && RELOCATABLE
 892
 893 config PAGE_OFFSET_BOOL
 894         bool "Set custom page offset address"
 895         depends on ADVANCED_OPTIONS
 896         help
 897           This option allows you to set the kernel virtual address at which
 898           the kernel will map low memory.  This can be useful in optimizing
 899           the virtual memory layout of the system.
 900
 901           Say N here unless you know what you are doing.
 902
 903 config PAGE_OFFSET
 904         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 905         default "0xc0000000"
 906
 907 config KERNEL_START_BOOL
 908         bool "Set custom kernel base address"
 909         depends on ADVANCED_OPTIONS
 910         help
 911           This option allows you to set the kernel virtual address at which
 912           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 913           however there are times (like kdump) that one might not want them
 914           to be the same.
 915
 916           Say N here unless you know what you are doing.
 917
 918 config KERNEL_START
 919         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 920         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 921         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 922         default "0xc0000000"
 923
 924 config PHYSICAL_START_BOOL
 925         bool "Set physical address where the kernel is loaded"
 926         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 927         help
 928           This gives the physical address where the kernel is loaded.
 929
 930           Say N here unless you know what you are doing.
 931
 932 config PHYSICAL_START
 933         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 934         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 935         default "0x00000000"
 936
 937 config PHYSICAL_ALIGN
 938         hex
 939         default "0x04000000" if FSL_BOOKE
 940         help
 941           This value puts the alignment restrictions on physical address
 942           where kernel is loaded and run from. Kernel is compiled for an
 943           address which meets above alignment restriction.
 944
 945 config TASK_SIZE_BOOL
 946         bool "Set custom user task size"
 947         depends on ADVANCED_OPTIONS
 948         help
 949           This option allows you to set the amount of virtual address space
 950           allocated to user tasks.  This can be useful in optimizing the
 951           virtual memory layout of the system.
 952
 953           Say N here unless you know what you are doing.
 954
 955 config TASK_SIZE
 956         hex "Size of user task space" if TASK_SIZE_BOOL
 957         default "0x80000000" if PPC_PREP || PPC_8xx
 958         default "0xc0000000"
 959
 960 config CONSISTENT_SIZE_BOOL
 961         bool "Set custom consistent memory pool size"
 962         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 963         help
 964           This option allows you to set the size of the
 965           consistent memory pool.  This pool of virtual memory
 966           is used to make consistent memory allocations.
 967
 968 config CONSISTENT_SIZE
 969         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 970         default "0x00200000" if NOT_COHERENT_CACHE
 971
 972 config PIN_TLB
 973         bool "Pinned Kernel TLBs (860 ONLY)"
 974         depends on ADVANCED_OPTIONS && 8xx
 975 endmenu
 976
 977 if PPC64
 978 config RELOCATABLE
 979         bool "Build a relocatable kernel"
 980         select NONSTATIC_KERNEL
 981         help
 982           This builds a kernel image that is capable of running anywhere
 983           in the RMA (real memory area) at any 16k-aligned base address.
 984           The kernel is linked as a position-independent executable (PIE)
 985           and contains dynamic relocations which are processed early
 986           in the bootup process.
 987
 988           One use is for the kexec on panic case where the recovery kernel
 989           must live at a different physical address than the primary
 990           kernel.
 991
 992 config PAGE_OFFSET
 993         hex
 994         default "0xc000000000000000"
 995 config KERNEL_START
 996         hex
 997         default "0xc000000000000000"
 998 config PHYSICAL_START
 999         hex
1000         default "0x00000000"
1001 endif
1002
1003 source "net/Kconfig"
1004
1005 source "drivers/Kconfig"
1006
1007 source "fs/Kconfig"
1008
1009 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1010
1011 source "lib/Kconfig"
1012
1013 source "arch/powerpc/Kconfig.debug"
1014
1015 source "security/Kconfig"
1016
1017 config KEYS_COMPAT
1018         bool
1019         depends on COMPAT && KEYS
1020         default y
1021
1022 source "crypto/Kconfig"
1023
1024 config PPC_CLOCK
1025         bool
1026         default n
1027         select HAVE_CLK
1028
1029 config PPC_LIB_RHEAP
1030         bool
1031
1032 source "arch/powerpc/kvm/Kconfig"