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 HAVE_MOD_ARCH_SPECIFIC
 145         select MODULES_USE_ELF_RELA
 146         select CLONE_BACKWARDS
 147
 148 config EARLY_PRINTK
 149         bool
 150         default y
 151
 152 config COMPAT
 153         bool
 154         default y if PPC64
 155         select COMPAT_BINFMT_ELF
 156         select ARCH_WANT_OLD_COMPAT_IPC
 157
 158 config SYSVIPC_COMPAT
 159         bool
 160         depends on COMPAT && SYSVIPC
 161         default y
 162
 163 # All PPC32s use generic nvram driver through ppc_md
 164 config GENERIC_NVRAM
 165         bool
 166         default y if PPC32
 167
 168 config SCHED_OMIT_FRAME_POINTER
 169         bool
 170         default y
 171
 172 config ARCH_MAY_HAVE_PC_FDC
 173         bool
 174         default !PPC_PSERIES || PCI
 175
 176 config PPC_OF
 177         def_bool y
 178
 179 config PPC_UDBG_16550
 180         bool
 181         default n
 182
 183 config GENERIC_TBSYNC
 184         bool
 185         default y if PPC32 && SMP
 186         default n
 187
 188 config AUDIT_ARCH
 189         bool
 190         default y
 191
 192 config GENERIC_BUG
 193         bool
 194         default y
 195         depends on BUG
 196
 197 config SYS_SUPPORTS_APM_EMULATION
 198         default y if PMAC_APM_EMU
 199         bool
 200
 201 config EPAPR_BOOT
 202         bool
 203         help
 204           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 205         default n
 206
 207 config DEFAULT_UIMAGE
 208         bool
 209         help
 210           Used to allow a board to specify it wants a uImage built by default
 211         default n
 212
 213 config REDBOOT
 214         bool
 215
 216 config ARCH_HIBERNATION_POSSIBLE
 217         bool
 218         default y
 219
 220 config ARCH_SUSPEND_POSSIBLE
 221         def_bool y
 222         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 223                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 224                    || 44x || 40x
 225
 226 config PPC_DCR_NATIVE
 227         bool
 228         default n
 229
 230 config PPC_DCR_MMIO
 231         bool
 232         default n
 233
 234 config PPC_DCR
 235         bool
 236         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 237         default y
 238
 239 config PPC_OF_PLATFORM_PCI
 240         bool
 241         depends on PCI
 242         depends on PPC64 # not supported on 32 bits yet
 243         default n
 244
 245 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 246         def_bool y
 247
 248 config ARCH_SUPPORTS_UPROBES
 249         def_bool y
 250
 251 config PPC_ADV_DEBUG_REGS
 252         bool
 253         depends on 40x || BOOKE
 254         default y
 255
 256 config PPC_ADV_DEBUG_IACS
 257         int
 258         depends on PPC_ADV_DEBUG_REGS
 259         default 4 if 44x
 260         default 2
 261
 262 config PPC_ADV_DEBUG_DACS
 263         int
 264         depends on PPC_ADV_DEBUG_REGS
 265         default 2
 266
 267 config PPC_ADV_DEBUG_DVCS
 268         int
 269         depends on PPC_ADV_DEBUG_REGS
 270         default 2 if 44x
 271         default 0
 272
 273 config PPC_ADV_DEBUG_DAC_RANGE
 274         bool
 275         depends on PPC_ADV_DEBUG_REGS && 44x
 276         default y
 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 || E200 || PPC_MPC832x || E500
 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 config 8XX_MINIMAL_FPEMU
 312         bool "Minimal math emulation for 8xx"
 313         depends on 8xx && !MATH_EMULATION
 314         help
 315           Older arch/ppc kernels still emulated a few floating point
 316           instructions such as load and store, even when full math
 317           emulation is disabled.  Say "Y" here if you want to preserve
 318           this behavior.
 319
 320           It is recommended that you build a soft-float userspace instead.
 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 && EXPERIMENTAL && (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 (EXPERIMENTAL)"
 360         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
 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 MAX_ACTIVE_REGIONS
 419         int
 420         default "256" if PPC64
 421         default "32"
 422
 423 config ARCH_SELECT_MEMORY_MODEL
 424         def_bool y
 425         depends on PPC64
 426
 427 config ARCH_FLATMEM_ENABLE
 428         def_bool y
 429         depends on (PPC64 && !NUMA) || PPC32
 430
 431 config ARCH_SPARSEMEM_ENABLE
 432         def_bool y
 433         depends on PPC64
 434         select SPARSEMEM_VMEMMAP_ENABLE
 435
 436 config ARCH_SPARSEMEM_DEFAULT
 437         def_bool y
 438         depends on (SMP && PPC_PSERIES) || PPC_PS3
 439
 440 config SYS_SUPPORTS_HUGETLBFS
 441         bool
 442
 443 source "mm/Kconfig"
 444
 445 config ARCH_MEMORY_PROBE
 446         def_bool y
 447         depends on MEMORY_HOTPLUG
 448
 449 # Some NUMA nodes have memory ranges that span
 450 # other nodes.  Even though a pfn is valid and
 451 # between a node's start and end pfns, it may not
 452 # reside on that node.  See memmap_init_zone()
 453 # for details.
 454 config NODES_SPAN_OTHER_NODES
 455         def_bool y
 456         depends on NEED_MULTIPLE_NODES
 457
 458 config PPC_HAS_HASH_64K
 459         bool
 460         depends on PPC64
 461         default n
 462
 463 config STDBINUTILS
 464         bool "Using standard binutils settings"
 465         depends on 44x
 466         default y
 467         help
 468           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 469           Note, that kernel will be able to run only those applications,
 470           which had been compiled using binutils later than 2.17.50.0.3 with
 471           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 472           the older binutils, you can patch them with a trivial patch, which
 473           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 474
 475 choice
 476         prompt "Page size"
 477         default PPC_4K_PAGES
 478         help
 479           Select the kernel logical page size. Increasing the page size
 480           will reduce software overhead at each page boundary, allow
 481           hardware prefetch mechanisms to be more effective, and allow
 482           larger dma transfers increasing IO efficiency and reducing
 483           overhead. However the utilization of memory will increase.
 484           For example, each cached file will using a multiple of the
 485           page size to hold its contents and the difference between the
 486           end of file and the end of page is wasted.
 487
 488           Some dedicated systems, such as software raid serving with
 489           accelerated calculations, have shown significant increases.
 490
 491           If you configure a 64 bit kernel for 64k pages but the
 492           processor does not support them, then the kernel will simulate
 493           them with 4k pages, loading them on demand, but with the
 494           reduced software overhead and larger internal fragmentation.
 495           For the 32 bit kernel, a large page option will not be offered
 496           unless it is supported by the configured processor.
 497
 498           If unsure, choose 4K_PAGES.
 499
 500 config PPC_4K_PAGES
 501         bool "4k page size"
 502
 503 config PPC_16K_PAGES
 504         bool "16k page size" if 44x
 505
 506 config PPC_64K_PAGES
 507         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 508         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 509
 510 config PPC_256K_PAGES
 511         bool "256k page size" if 44x
 512         depends on !STDBINUTILS
 513         help
 514           Make the page size 256k.
 515
 516           As the ELF standard only requires alignment to support page
 517           sizes up to 64k, you will need to compile all of your user
 518           space applications with a non-standard binutils settings
 519           (see the STDBINUTILS description for details).
 520
 521           Say N unless you know what you are doing.
 522
 523 endchoice
 524
 525 config FORCE_MAX_ZONEORDER
 526         int "Maximum zone order"
 527         range 9 64 if PPC64 && PPC_64K_PAGES
 528         default "9" if PPC64 && PPC_64K_PAGES
 529         range 13 64 if PPC64 && !PPC_64K_PAGES
 530         default "13" if PPC64 && !PPC_64K_PAGES
 531         range 9 64 if PPC32 && PPC_16K_PAGES
 532         default "9" if PPC32 && PPC_16K_PAGES
 533         range 7 64 if PPC32 && PPC_64K_PAGES
 534         default "7" if PPC32 && PPC_64K_PAGES
 535         range 5 64 if PPC32 && PPC_256K_PAGES
 536         default "5" if PPC32 && PPC_256K_PAGES
 537         range 11 64
 538         default "11"
 539         help
 540           The kernel memory allocator divides physically contiguous memory
 541           blocks into "zones", where each zone is a power of two number of
 542           pages.  This option selects the largest power of two that the kernel
 543           keeps in the memory allocator.  If you need to allocate very large
 544           blocks of physically contiguous memory, then you may need to
 545           increase this value.
 546
 547           This config option is actually maximum order plus one. For example,
 548           a value of 11 means that the largest free memory block is 2^10 pages.
 549
 550           The page size is not necessarily 4KB.  For example, on 64-bit
 551           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 552           this in mind when choosing a value for this option.
 553
 554 config PPC_SUBPAGE_PROT
 555         bool "Support setting protections for 4k subpages"
 556         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 557         help
 558           This option adds support for a system call to allow user programs
 559           to set access permissions (read/write, readonly, or no access)
 560           on the 4k subpages of each 64k page.
 561
 562 config SCHED_SMT
 563         bool "SMT (Hyperthreading) scheduler support"
 564         depends on PPC64 && SMP
 565         help
 566           SMT scheduler support improves the CPU scheduler's decision making
 567           when dealing with POWER5 cpus at a cost of slightly increased
 568           overhead in some places. If unsure say N here.
 569
 570 config PPC_DENORMALISATION
 571         bool "PowerPC denormalisation exception handling"
 572         depends on PPC_BOOK3S_64
 573         default "n"
 574         ---help---
 575           Add support for handling denormalisation of single precision
 576           values.  Useful for bare metal only.  If unsure say Y here.
 577
 578 config CMDLINE_BOOL
 579         bool "Default bootloader kernel arguments"
 580
 581 config CMDLINE
 582         string "Initial kernel command string"
 583         depends on CMDLINE_BOOL
 584         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 585         help
 586           On some platforms, there is currently no way for the boot loader to
 587           pass arguments to the kernel. For these platforms, you can supply
 588           some command-line options at build time by entering them here.  In
 589           most cases you will need to specify the root device here.
 590
 591 config EXTRA_TARGETS
 592         string "Additional default image types"
 593         help
 594           List additional targets to be built by the bootwrapper here (separated
 595           by spaces).  This is useful for targets that depend of device tree
 596           files in the .dts directory.
 597
 598           Targets in this list will be build as part of the default build
 599           target, or when the user does a 'make zImage' or a
 600           'make zImage.initrd'.
 601
 602           If unsure, leave blank
 603
 604 config ARCH_WANTS_FREEZER_CONTROL
 605         def_bool y
 606         depends on ADB_PMU
 607
 608 source kernel/power/Kconfig
 609
 610 config SECCOMP
 611         bool "Enable seccomp to safely compute untrusted bytecode"
 612         depends on PROC_FS
 613         default y
 614         help
 615           This kernel feature is useful for number crunching applications
 616           that may need to compute untrusted bytecode during their
 617           execution. By using pipes or other transports made available to
 618           the process as file descriptors supporting the read/write
 619           syscalls, it's possible to isolate those applications in
 620           their own address space using seccomp. Once seccomp is
 621           enabled via /proc/<pid>/seccomp, it cannot be disabled
 622           and the task is only allowed to execute a few safe syscalls
 623           defined by each seccomp mode.
 624
 625           If unsure, say Y. Only embedded should say N here.
 626
 627 endmenu
 628
 629 config ISA_DMA_API
 630         bool
 631         default PCI
 632
 633 menu "Bus options"
 634
 635 config ISA
 636         bool "Support for ISA-bus hardware"
 637         depends on PPC_PREP || PPC_CHRP
 638         select PPC_I8259
 639         help
 640           Find out whether you have ISA slots on your motherboard.  ISA is the
 641           name of a bus system, i.e. the way the CPU talks to the other stuff
 642           inside your box.  If you have an Apple machine, say N here; if you
 643           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 644           you have an embedded board, consult your board documentation.
 645
 646 config ZONE_DMA
 647         bool
 648         default y
 649
 650 config NEED_DMA_MAP_STATE
 651         def_bool (PPC64 || NOT_COHERENT_CACHE)
 652
 653 config NEED_SG_DMA_LENGTH
 654         def_bool y
 655
 656 config GENERIC_ISA_DMA
 657         bool
 658         depends on ISA_DMA_API
 659         default y
 660
 661 config PPC_INDIRECT_PCI
 662         bool
 663         depends on PCI
 664         default y if 40x || 44x
 665         default n
 666
 667 config EISA
 668         bool
 669
 670 config SBUS
 671         bool
 672
 673 config FSL_SOC
 674         bool
 675         select HAVE_CAN_FLEXCAN if NET && CAN
 676         select PPC_CLOCK
 677
 678 config FSL_PCI
 679         bool
 680         select PPC_INDIRECT_PCI
 681         select PCI_QUIRKS
 682
 683 config FSL_PMC
 684         bool
 685         default y
 686         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 687         help
 688           Freescale MPC85xx/MPC86xx power management controller support
 689           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 690
 691 config PPC4xx_CPM
 692         bool
 693         default y
 694         depends on SUSPEND && (44x || 40x)
 695         help
 696           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 697           It also enables support for two different idle states (idle-wait
 698           and idle-doze).
 699
 700 config 4xx_SOC
 701         bool
 702
 703 config FSL_LBC
 704         bool "Freescale Local Bus support"
 705         depends on FSL_SOC
 706         help
 707           Enables reporting of errors from the Freescale local bus
 708           controller.  Also contains some common code used by
 709           drivers for specific local bus peripherals.
 710
 711 config FSL_IFC
 712         bool
 713         depends on FSL_SOC
 714
 715 config FSL_GTM
 716         bool
 717         depends on PPC_83xx || QUICC_ENGINE || CPM2
 718         help
 719           Freescale General-purpose Timers support
 720
 721 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 722 config MCA
 723         bool
 724
 725 # Platforms that what PCI turned unconditionally just do select PCI
 726 # in their config node.  Platforms that want to choose at config
 727 # time should select PPC_PCI_CHOICE
 728 config PPC_PCI_CHOICE
 729         bool
 730
 731 config PCI
 732         bool "PCI support" if PPC_PCI_CHOICE
 733         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 734                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 735         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 736         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 737         select ARCH_SUPPORTS_MSI
 738         select GENERIC_PCI_IOMAP
 739         help
 740           Find out whether your system includes a PCI bus. PCI is the name of
 741           a bus system, i.e. the way the CPU talks to the other stuff inside
 742           your box.  If you say Y here, the kernel will include drivers and
 743           infrastructure code to support PCI bus devices.
 744
 745 config PCI_DOMAINS
 746         def_bool PCI
 747
 748 config PCI_SYSCALL
 749         def_bool PCI
 750
 751 config PCI_QSPAN
 752         bool "QSpan PCI"
 753         depends on !4xx && !CPM2 && 8xx
 754         select PPC_I8259
 755         help
 756           Say Y here if you have a system based on a Motorola 8xx-series
 757           embedded processor with a QSPAN PCI interface, otherwise say N.
 758
 759 config PCI_8260
 760         bool
 761         depends on PCI && 8260
 762         select PPC_INDIRECT_PCI
 763         default y
 764
 765 config 8260_PCI9
 766         bool "Enable workaround for MPC826x erratum PCI 9"
 767         depends on PCI_8260 && !8272
 768         default y
 769
 770 source "drivers/pci/pcie/Kconfig"
 771
 772 source "drivers/pci/Kconfig"
 773
 774 source "drivers/pcmcia/Kconfig"
 775
 776 source "drivers/pci/hotplug/Kconfig"
 777
 778 config HAS_RAPIDIO
 779         bool
 780         default n
 781
 782 config RAPIDIO
 783         bool "RapidIO support"
 784         depends on HAS_RAPIDIO || PCI
 785         help
 786           If you say Y here, the kernel will include drivers and
 787           infrastructure code to support RapidIO interconnect devices.
 788
 789 config FSL_RIO
 790         bool "Freescale Embedded SRIO Controller support"
 791         depends on RAPIDIO && HAS_RAPIDIO
 792         default "n"
 793         ---help---
 794           Include support for RapidIO controller on Freescale embedded
 795           processors (MPC8548, MPC8641, etc).
 796
 797 source "drivers/rapidio/Kconfig"
 798
 799 endmenu
 800
 801 config NONSTATIC_KERNEL
 802         bool
 803         default n
 804
 805 menu "Advanced setup"
 806         depends on PPC32
 807
 808 config ADVANCED_OPTIONS
 809         bool "Prompt for advanced kernel configuration options"
 810         help
 811           This option will enable prompting for a variety of advanced kernel
 812           configuration options.  These options can cause the kernel to not
 813           work if they are set incorrectly, but can be used to optimize certain
 814           aspects of kernel memory management.
 815
 816           Unless you know what you are doing, say N here.
 817
 818 comment "Default settings for advanced configuration options are used"
 819         depends on !ADVANCED_OPTIONS
 820
 821 config LOWMEM_SIZE_BOOL
 822         bool "Set maximum low memory"
 823         depends on ADVANCED_OPTIONS
 824         help
 825           This option allows you to set the maximum amount of memory which
 826           will be used as "low memory", that is, memory which the kernel can
 827           access directly, without having to set up a kernel virtual mapping.
 828           This can be useful in optimizing the layout of kernel virtual
 829           memory.
 830
 831           Say N here unless you know what you are doing.
 832
 833 config LOWMEM_SIZE
 834         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 835         default "0x30000000"
 836
 837 config LOWMEM_CAM_NUM_BOOL
 838         bool "Set number of CAMs to use to map low memory"
 839         depends on ADVANCED_OPTIONS && FSL_BOOKE
 840         help
 841           This option allows you to set the maximum number of CAM slots that
 842           will be used to map low memory.  There are a limited number of slots
 843           available and even more limited number that will fit in the L1 MMU.
 844           However, using more entries will allow mapping more low memory.  This
 845           can be useful in optimizing the layout of kernel virtual memory.
 846
 847           Say N here unless you know what you are doing.
 848
 849 config LOWMEM_CAM_NUM
 850         depends on FSL_BOOKE
 851         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 852         default 3
 853
 854 config DYNAMIC_MEMSTART
 855         bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 856         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 857         select NONSTATIC_KERNEL
 858         help
 859           This option enables the kernel to be loaded at any page aligned
 860           physical address. The kernel creates a mapping from KERNELBASE to
 861           the address where the kernel is loaded. The page size here implies
 862           the TLB page size of the mapping for kernel on the particular platform.
 863           Please refer to the init code for finding the TLB page size.
 864
 865           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 866           kernel image, where the only restriction is the page aligned kernel
 867           load address. When this option is enabled, the compile time physical
 868           address CONFIG_PHYSICAL_START is ignored.
 869
 870           This option is overridden by CONFIG_RELOCATABLE
 871
 872 config RELOCATABLE
 873         bool "Build a relocatable kernel (EXPERIMENTAL)"
 874         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
 875         select NONSTATIC_KERNEL
 876         help
 877           This builds a kernel image that is capable of running at the
 878           location the kernel is loaded at, without any alignment restrictions.
 879           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 880
 881           One use is for the kexec on panic case where the recovery kernel
 882           must live at a different physical address than the primary
 883           kernel.
 884
 885           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 886           it has been loaded at and the compile time physical addresses
 887           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 888           setting can still be useful to bootwrappers that need to know the
 889           load address of the kernel (eg. u-boot/mkimage).
 890
 891 config RELOCATABLE_PPC32
 892         def_bool y
 893         depends on PPC32 && RELOCATABLE
 894
 895 config PAGE_OFFSET_BOOL
 896         bool "Set custom page offset address"
 897         depends on ADVANCED_OPTIONS
 898         help
 899           This option allows you to set the kernel virtual address at which
 900           the kernel will map low memory.  This can be useful in optimizing
 901           the virtual memory layout of the system.
 902
 903           Say N here unless you know what you are doing.
 904
 905 config PAGE_OFFSET
 906         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 907         default "0xc0000000"
 908
 909 config KERNEL_START_BOOL
 910         bool "Set custom kernel base address"
 911         depends on ADVANCED_OPTIONS
 912         help
 913           This option allows you to set the kernel virtual address at which
 914           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 915           however there are times (like kdump) that one might not want them
 916           to be the same.
 917
 918           Say N here unless you know what you are doing.
 919
 920 config KERNEL_START
 921         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 922         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 923         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 924         default "0xc0000000"
 925
 926 config PHYSICAL_START_BOOL
 927         bool "Set physical address where the kernel is loaded"
 928         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 929         help
 930           This gives the physical address where the kernel is loaded.
 931
 932           Say N here unless you know what you are doing.
 933
 934 config PHYSICAL_START
 935         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 936         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 937         default "0x00000000"
 938
 939 config PHYSICAL_ALIGN
 940         hex
 941         default "0x04000000" if FSL_BOOKE
 942         help
 943           This value puts the alignment restrictions on physical address
 944           where kernel is loaded and run from. Kernel is compiled for an
 945           address which meets above alignment restriction.
 946
 947 config TASK_SIZE_BOOL
 948         bool "Set custom user task size"
 949         depends on ADVANCED_OPTIONS
 950         help
 951           This option allows you to set the amount of virtual address space
 952           allocated to user tasks.  This can be useful in optimizing the
 953           virtual memory layout of the system.
 954
 955           Say N here unless you know what you are doing.
 956
 957 config TASK_SIZE
 958         hex "Size of user task space" if TASK_SIZE_BOOL
 959         default "0x80000000" if PPC_PREP || PPC_8xx
 960         default "0xc0000000"
 961
 962 config CONSISTENT_SIZE_BOOL
 963         bool "Set custom consistent memory pool size"
 964         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 965         help
 966           This option allows you to set the size of the
 967           consistent memory pool.  This pool of virtual memory
 968           is used to make consistent memory allocations.
 969
 970 config CONSISTENT_SIZE
 971         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 972         default "0x00200000" if NOT_COHERENT_CACHE
 973
 974 config PIN_TLB
 975         bool "Pinned Kernel TLBs (860 ONLY)"
 976         depends on ADVANCED_OPTIONS && 8xx
 977 endmenu
 978
 979 if PPC64
 980 config RELOCATABLE
 981         bool "Build a relocatable kernel"
 982         select NONSTATIC_KERNEL
 983         help
 984           This builds a kernel image that is capable of running anywhere
 985           in the RMA (real memory area) at any 16k-aligned base address.
 986           The kernel is linked as a position-independent executable (PIE)
 987           and contains dynamic relocations which are processed early
 988           in the bootup process.
 989
 990           One use is for the kexec on panic case where the recovery kernel
 991           must live at a different physical address than the primary
 992           kernel.
 993
 994 config PAGE_OFFSET
 995         hex
 996         default "0xc000000000000000"
 997 config KERNEL_START
 998         hex
 999         default "0xc000000000000000"
1000 config PHYSICAL_START
1001         hex
1002         default "0x00000000"
1003 endif
1004
1005 source "net/Kconfig"
1006
1007 source "drivers/Kconfig"
1008
1009 source "fs/Kconfig"
1010
1011 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1012
1013 source "lib/Kconfig"
1014
1015 source "arch/powerpc/Kconfig.debug"
1016
1017 source "security/Kconfig"
1018
1019 config KEYS_COMPAT
1020         bool
1021         depends on COMPAT && KEYS
1022         default y
1023
1024 source "crypto/Kconfig"
1025
1026 config PPC_CLOCK
1027         bool
1028         default n
1029         select HAVE_CLK
1030
1031 config PPC_LIB_RHEAP
1032         bool
1033
1034 source "arch/powerpc/kvm/Kconfig"