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         select ARCH_USE_BUILTIN_BSWAP
 148
 149 config EARLY_PRINTK
 150         bool
 151         default y
 152
 153 config COMPAT
 154         bool
 155         default y if PPC64
 156         select COMPAT_BINFMT_ELF
 157         select ARCH_WANT_OLD_COMPAT_IPC
 158
 159 config SYSVIPC_COMPAT
 160         bool
 161         depends on COMPAT && SYSVIPC
 162         default y
 163
 164 # All PPC32s use generic nvram driver through ppc_md
 165 config GENERIC_NVRAM
 166         bool
 167         default y if PPC32
 168
 169 config SCHED_OMIT_FRAME_POINTER
 170         bool
 171         default y
 172
 173 config ARCH_MAY_HAVE_PC_FDC
 174         bool
 175         default !PPC_PSERIES || PCI
 176
 177 config PPC_OF
 178         def_bool y
 179
 180 config PPC_UDBG_16550
 181         bool
 182         default n
 183
 184 config GENERIC_TBSYNC
 185         bool
 186         default y if PPC32 && SMP
 187         default n
 188
 189 config AUDIT_ARCH
 190         bool
 191         default y
 192
 193 config GENERIC_BUG
 194         bool
 195         default y
 196         depends on BUG
 197
 198 config SYS_SUPPORTS_APM_EMULATION
 199         default y if PMAC_APM_EMU
 200         bool
 201
 202 config EPAPR_BOOT
 203         bool
 204         help
 205           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 206         default n
 207
 208 config DEFAULT_UIMAGE
 209         bool
 210         help
 211           Used to allow a board to specify it wants a uImage built by default
 212         default n
 213
 214 config REDBOOT
 215         bool
 216
 217 config ARCH_HIBERNATION_POSSIBLE
 218         bool
 219         default y
 220
 221 config ARCH_SUSPEND_POSSIBLE
 222         def_bool y
 223         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 224                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 225                    || 44x || 40x
 226
 227 config PPC_DCR_NATIVE
 228         bool
 229         default n
 230
 231 config PPC_DCR_MMIO
 232         bool
 233         default n
 234
 235 config PPC_DCR
 236         bool
 237         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 238         default y
 239
 240 config PPC_OF_PLATFORM_PCI
 241         bool
 242         depends on PCI
 243         depends on PPC64 # not supported on 32 bits yet
 244         default n
 245
 246 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 247         def_bool y
 248
 249 config ARCH_SUPPORTS_UPROBES
 250         def_bool y
 251
 252 config PPC_ADV_DEBUG_REGS
 253         bool
 254         depends on 40x || BOOKE
 255         default y
 256
 257 config PPC_ADV_DEBUG_IACS
 258         int
 259         depends on PPC_ADV_DEBUG_REGS
 260         default 4 if 44x
 261         default 2
 262
 263 config PPC_ADV_DEBUG_DACS
 264         int
 265         depends on PPC_ADV_DEBUG_REGS
 266         default 2
 267
 268 config PPC_ADV_DEBUG_DVCS
 269         int
 270         depends on PPC_ADV_DEBUG_REGS
 271         default 2 if 44x
 272         default 0
 273
 274 config PPC_ADV_DEBUG_DAC_RANGE
 275         bool
 276         depends on PPC_ADV_DEBUG_REGS && 44x
 277         default y
 278
 279 source "init/Kconfig"
 280
 281 source "kernel/Kconfig.freezer"
 282
 283 source "arch/powerpc/sysdev/Kconfig"
 284 source "arch/powerpc/platforms/Kconfig"
 285
 286 menu "Kernel options"
 287
 288 config HIGHMEM
 289         bool "High memory support"
 290         depends on PPC32
 291
 292 source kernel/Kconfig.hz
 293 source kernel/Kconfig.preempt
 294 source "fs/Kconfig.binfmt"
 295
 296 config HUGETLB_PAGE_SIZE_VARIABLE
 297         bool
 298         depends on HUGETLB_PAGE
 299         default y
 300
 301 config MATH_EMULATION
 302         bool "Math emulation"
 303         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 304         ---help---
 305           Some PowerPC chips designed for embedded applications do not have
 306           a floating-point unit and therefore do not implement the
 307           floating-point instructions in the PowerPC instruction set.  If you
 308           say Y here, the kernel will include code to emulate a floating-point
 309           unit, which will allow programs that use floating-point
 310           instructions to run.
 311
 312 config 8XX_MINIMAL_FPEMU
 313         bool "Minimal math emulation for 8xx"
 314         depends on 8xx && !MATH_EMULATION
 315         help
 316           Older arch/ppc kernels still emulated a few floating point
 317           instructions such as load and store, even when full math
 318           emulation is disabled.  Say "Y" here if you want to preserve
 319           this behavior.
 320
 321           It is recommended that you build a soft-float userspace instead.
 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 && HOTPLUG && EXPERIMENTAL && (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 (EXPERIMENTAL)"
 361         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
 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 MAX_ACTIVE_REGIONS
 420         int
 421         default "256" if PPC64
 422         default "32"
 423
 424 config ARCH_SELECT_MEMORY_MODEL
 425         def_bool y
 426         depends on PPC64
 427
 428 config ARCH_FLATMEM_ENABLE
 429         def_bool y
 430         depends on (PPC64 && !NUMA) || PPC32
 431
 432 config ARCH_SPARSEMEM_ENABLE
 433         def_bool y
 434         depends on PPC64
 435         select SPARSEMEM_VMEMMAP_ENABLE
 436
 437 config ARCH_SPARSEMEM_DEFAULT
 438         def_bool y
 439         depends on (SMP && PPC_PSERIES) || PPC_PS3
 440
 441 config SYS_SUPPORTS_HUGETLBFS
 442         bool
 443
 444 source "mm/Kconfig"
 445
 446 config ARCH_MEMORY_PROBE
 447         def_bool y
 448         depends on MEMORY_HOTPLUG
 449
 450 # Some NUMA nodes have memory ranges that span
 451 # other nodes.  Even though a pfn is valid and
 452 # between a node's start and end pfns, it may not
 453 # reside on that node.  See memmap_init_zone()
 454 # for details.
 455 config NODES_SPAN_OTHER_NODES
 456         def_bool y
 457         depends on NEED_MULTIPLE_NODES
 458
 459 config PPC_HAS_HASH_64K
 460         bool
 461         depends on PPC64
 462         default n
 463
 464 config STDBINUTILS
 465         bool "Using standard binutils settings"
 466         depends on 44x
 467         default y
 468         help
 469           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 470           Note, that kernel will be able to run only those applications,
 471           which had been compiled using binutils later than 2.17.50.0.3 with
 472           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 473           the older binutils, you can patch them with a trivial patch, which
 474           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 475
 476 choice
 477         prompt "Page size"
 478         default PPC_4K_PAGES
 479         help
 480           Select the kernel logical page size. Increasing the page size
 481           will reduce software overhead at each page boundary, allow
 482           hardware prefetch mechanisms to be more effective, and allow
 483           larger dma transfers increasing IO efficiency and reducing
 484           overhead. However the utilization of memory will increase.
 485           For example, each cached file will using a multiple of the
 486           page size to hold its contents and the difference between the
 487           end of file and the end of page is wasted.
 488
 489           Some dedicated systems, such as software raid serving with
 490           accelerated calculations, have shown significant increases.
 491
 492           If you configure a 64 bit kernel for 64k pages but the
 493           processor does not support them, then the kernel will simulate
 494           them with 4k pages, loading them on demand, but with the
 495           reduced software overhead and larger internal fragmentation.
 496           For the 32 bit kernel, a large page option will not be offered
 497           unless it is supported by the configured processor.
 498
 499           If unsure, choose 4K_PAGES.
 500
 501 config PPC_4K_PAGES
 502         bool "4k page size"
 503
 504 config PPC_16K_PAGES
 505         bool "16k page size" if 44x
 506
 507 config PPC_64K_PAGES
 508         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 509         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 510
 511 config PPC_256K_PAGES
 512         bool "256k page size" if 44x
 513         depends on !STDBINUTILS
 514         help
 515           Make the page size 256k.
 516
 517           As the ELF standard only requires alignment to support page
 518           sizes up to 64k, you will need to compile all of your user
 519           space applications with a non-standard binutils settings
 520           (see the STDBINUTILS description for details).
 521
 522           Say N unless you know what you are doing.
 523
 524 endchoice
 525
 526 config FORCE_MAX_ZONEORDER
 527         int "Maximum zone order"
 528         range 9 64 if PPC64 && PPC_64K_PAGES
 529         default "9" if PPC64 && PPC_64K_PAGES
 530         range 13 64 if PPC64 && !PPC_64K_PAGES
 531         default "13" if PPC64 && !PPC_64K_PAGES
 532         range 9 64 if PPC32 && PPC_16K_PAGES
 533         default "9" if PPC32 && PPC_16K_PAGES
 534         range 7 64 if PPC32 && PPC_64K_PAGES
 535         default "7" if PPC32 && PPC_64K_PAGES
 536         range 5 64 if PPC32 && PPC_256K_PAGES
 537         default "5" if PPC32 && PPC_256K_PAGES
 538         range 11 64
 539         default "11"
 540         help
 541           The kernel memory allocator divides physically contiguous memory
 542           blocks into "zones", where each zone is a power of two number of
 543           pages.  This option selects the largest power of two that the kernel
 544           keeps in the memory allocator.  If you need to allocate very large
 545           blocks of physically contiguous memory, then you may need to
 546           increase this value.
 547
 548           This config option is actually maximum order plus one. For example,
 549           a value of 11 means that the largest free memory block is 2^10 pages.
 550
 551           The page size is not necessarily 4KB.  For example, on 64-bit
 552           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 553           this in mind when choosing a value for this option.
 554
 555 config PPC_SUBPAGE_PROT
 556         bool "Support setting protections for 4k subpages"
 557         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 558         help
 559           This option adds support for a system call to allow user programs
 560           to set access permissions (read/write, readonly, or no access)
 561           on the 4k subpages of each 64k page.
 562
 563 config SCHED_SMT
 564         bool "SMT (Hyperthreading) scheduler support"
 565         depends on PPC64 && SMP
 566         help
 567           SMT scheduler support improves the CPU scheduler's decision making
 568           when dealing with POWER5 cpus at a cost of slightly increased
 569           overhead in some places. If unsure say N here.
 570
 571 config PPC_DENORMALISATION
 572         bool "PowerPC denormalisation exception handling"
 573         depends on PPC_BOOK3S_64
 574         default "n"
 575         ---help---
 576           Add support for handling denormalisation of single precision
 577           values.  Useful for bare metal only.  If unsure say Y here.
 578
 579 config CMDLINE_BOOL
 580         bool "Default bootloader kernel arguments"
 581
 582 config CMDLINE
 583         string "Initial kernel command string"
 584         depends on CMDLINE_BOOL
 585         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 586         help
 587           On some platforms, there is currently no way for the boot loader to
 588           pass arguments to the kernel. For these platforms, you can supply
 589           some command-line options at build time by entering them here.  In
 590           most cases you will need to specify the root device here.
 591
 592 config EXTRA_TARGETS
 593         string "Additional default image types"
 594         help
 595           List additional targets to be built by the bootwrapper here (separated
 596           by spaces).  This is useful for targets that depend of device tree
 597           files in the .dts directory.
 598
 599           Targets in this list will be build as part of the default build
 600           target, or when the user does a 'make zImage' or a
 601           'make zImage.initrd'.
 602
 603           If unsure, leave blank
 604
 605 config ARCH_WANTS_FREEZER_CONTROL
 606         def_bool y
 607         depends on ADB_PMU
 608
 609 source kernel/power/Kconfig
 610
 611 config SECCOMP
 612         bool "Enable seccomp to safely compute untrusted bytecode"
 613         depends on PROC_FS
 614         default y
 615         help
 616           This kernel feature is useful for number crunching applications
 617           that may need to compute untrusted bytecode during their
 618           execution. By using pipes or other transports made available to
 619           the process as file descriptors supporting the read/write
 620           syscalls, it's possible to isolate those applications in
 621           their own address space using seccomp. Once seccomp is
 622           enabled via /proc/<pid>/seccomp, it cannot be disabled
 623           and the task is only allowed to execute a few safe syscalls
 624           defined by each seccomp mode.
 625
 626           If unsure, say Y. Only embedded should say N here.
 627
 628 endmenu
 629
 630 config ISA_DMA_API
 631         bool
 632         default PCI
 633
 634 menu "Bus options"
 635
 636 config ISA
 637         bool "Support for ISA-bus hardware"
 638         depends on PPC_PREP || PPC_CHRP
 639         select PPC_I8259
 640         help
 641           Find out whether you have ISA slots on your motherboard.  ISA is the
 642           name of a bus system, i.e. the way the CPU talks to the other stuff
 643           inside your box.  If you have an Apple machine, say N here; if you
 644           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 645           you have an embedded board, consult your board documentation.
 646
 647 config ZONE_DMA
 648         bool
 649         default y
 650
 651 config NEED_DMA_MAP_STATE
 652         def_bool (PPC64 || NOT_COHERENT_CACHE)
 653
 654 config NEED_SG_DMA_LENGTH
 655         def_bool y
 656
 657 config GENERIC_ISA_DMA
 658         bool
 659         depends on ISA_DMA_API
 660         default y
 661
 662 config PPC_INDIRECT_PCI
 663         bool
 664         depends on PCI
 665         default y if 40x || 44x
 666         default n
 667
 668 config EISA
 669         bool
 670
 671 config SBUS
 672         bool
 673
 674 config FSL_SOC
 675         bool
 676         select HAVE_CAN_FLEXCAN if NET && CAN
 677         select PPC_CLOCK
 678
 679 config FSL_PCI
 680         bool
 681         select PPC_INDIRECT_PCI
 682         select PCI_QUIRKS
 683
 684 config FSL_PMC
 685         bool
 686         default y
 687         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 688         help
 689           Freescale MPC85xx/MPC86xx power management controller support
 690           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 691
 692 config PPC4xx_CPM
 693         bool
 694         default y
 695         depends on SUSPEND && (44x || 40x)
 696         help
 697           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 698           It also enables support for two different idle states (idle-wait
 699           and idle-doze).
 700
 701 config 4xx_SOC
 702         bool
 703
 704 config FSL_LBC
 705         bool "Freescale Local Bus support"
 706         depends on FSL_SOC
 707         help
 708           Enables reporting of errors from the Freescale local bus
 709           controller.  Also contains some common code used by
 710           drivers for specific local bus peripherals.
 711
 712 config FSL_IFC
 713         bool
 714         depends on FSL_SOC
 715
 716 config FSL_GTM
 717         bool
 718         depends on PPC_83xx || QUICC_ENGINE || CPM2
 719         help
 720           Freescale General-purpose Timers support
 721
 722 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 723 config MCA
 724         bool
 725
 726 # Platforms that what PCI turned unconditionally just do select PCI
 727 # in their config node.  Platforms that want to choose at config
 728 # time should select PPC_PCI_CHOICE
 729 config PPC_PCI_CHOICE
 730         bool
 731
 732 config PCI
 733         bool "PCI support" if PPC_PCI_CHOICE
 734         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 735                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 736         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 737         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 738         select ARCH_SUPPORTS_MSI
 739         select GENERIC_PCI_IOMAP
 740         help
 741           Find out whether your system includes a PCI bus. PCI is the name of
 742           a bus system, i.e. the way the CPU talks to the other stuff inside
 743           your box.  If you say Y here, the kernel will include drivers and
 744           infrastructure code to support PCI bus devices.
 745
 746 config PCI_DOMAINS
 747         def_bool PCI
 748
 749 config PCI_SYSCALL
 750         def_bool PCI
 751
 752 config PCI_QSPAN
 753         bool "QSpan PCI"
 754         depends on !4xx && !CPM2 && 8xx
 755         select PPC_I8259
 756         help
 757           Say Y here if you have a system based on a Motorola 8xx-series
 758           embedded processor with a QSPAN PCI interface, otherwise say N.
 759
 760 config PCI_8260
 761         bool
 762         depends on PCI && 8260
 763         select PPC_INDIRECT_PCI
 764         default y
 765
 766 config 8260_PCI9
 767         bool "Enable workaround for MPC826x erratum PCI 9"
 768         depends on PCI_8260 && !8272
 769         default y
 770
 771 source "drivers/pci/pcie/Kconfig"
 772
 773 source "drivers/pci/Kconfig"
 774
 775 source "drivers/pcmcia/Kconfig"
 776
 777 source "drivers/pci/hotplug/Kconfig"
 778
 779 config HAS_RAPIDIO
 780         bool
 781         default n
 782
 783 config RAPIDIO
 784         bool "RapidIO support"
 785         depends on HAS_RAPIDIO || PCI
 786         help
 787           If you say Y here, the kernel will include drivers and
 788           infrastructure code to support RapidIO interconnect devices.
 789
 790 config FSL_RIO
 791         bool "Freescale Embedded SRIO Controller support"
 792         depends on RAPIDIO && HAS_RAPIDIO
 793         default "n"
 794         ---help---
 795           Include support for RapidIO controller on Freescale embedded
 796           processors (MPC8548, MPC8641, etc).
 797
 798 source "drivers/rapidio/Kconfig"
 799
 800 endmenu
 801
 802 config NONSTATIC_KERNEL
 803         bool
 804         default n
 805
 806 menu "Advanced setup"
 807         depends on PPC32
 808
 809 config ADVANCED_OPTIONS
 810         bool "Prompt for advanced kernel configuration options"
 811         help
 812           This option will enable prompting for a variety of advanced kernel
 813           configuration options.  These options can cause the kernel to not
 814           work if they are set incorrectly, but can be used to optimize certain
 815           aspects of kernel memory management.
 816
 817           Unless you know what you are doing, say N here.
 818
 819 comment "Default settings for advanced configuration options are used"
 820         depends on !ADVANCED_OPTIONS
 821
 822 config LOWMEM_SIZE_BOOL
 823         bool "Set maximum low memory"
 824         depends on ADVANCED_OPTIONS
 825         help
 826           This option allows you to set the maximum amount of memory which
 827           will be used as "low memory", that is, memory which the kernel can
 828           access directly, without having to set up a kernel virtual mapping.
 829           This can be useful in optimizing the layout of kernel virtual
 830           memory.
 831
 832           Say N here unless you know what you are doing.
 833
 834 config LOWMEM_SIZE
 835         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 836         default "0x30000000"
 837
 838 config LOWMEM_CAM_NUM_BOOL
 839         bool "Set number of CAMs to use to map low memory"
 840         depends on ADVANCED_OPTIONS && FSL_BOOKE
 841         help
 842           This option allows you to set the maximum number of CAM slots that
 843           will be used to map low memory.  There are a limited number of slots
 844           available and even more limited number that will fit in the L1 MMU.
 845           However, using more entries will allow mapping more low memory.  This
 846           can be useful in optimizing the layout of kernel virtual memory.
 847
 848           Say N here unless you know what you are doing.
 849
 850 config LOWMEM_CAM_NUM
 851         depends on FSL_BOOKE
 852         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 853         default 3
 854
 855 config DYNAMIC_MEMSTART
 856         bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 857         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 858         select NONSTATIC_KERNEL
 859         help
 860           This option enables the kernel to be loaded at any page aligned
 861           physical address. The kernel creates a mapping from KERNELBASE to
 862           the address where the kernel is loaded. The page size here implies
 863           the TLB page size of the mapping for kernel on the particular platform.
 864           Please refer to the init code for finding the TLB page size.
 865
 866           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 867           kernel image, where the only restriction is the page aligned kernel
 868           load address. When this option is enabled, the compile time physical
 869           address CONFIG_PHYSICAL_START is ignored.
 870
 871           This option is overridden by CONFIG_RELOCATABLE
 872
 873 config RELOCATABLE
 874         bool "Build a relocatable kernel (EXPERIMENTAL)"
 875         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
 876         select NONSTATIC_KERNEL
 877         help
 878           This builds a kernel image that is capable of running at the
 879           location the kernel is loaded at, without any alignment restrictions.
 880           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 881
 882           One use is for the kexec on panic case where the recovery kernel
 883           must live at a different physical address than the primary
 884           kernel.
 885
 886           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 887           it has been loaded at and the compile time physical addresses
 888           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 889           setting can still be useful to bootwrappers that need to know the
 890           load address of the kernel (eg. u-boot/mkimage).
 891
 892 config RELOCATABLE_PPC32
 893         def_bool y
 894         depends on PPC32 && RELOCATABLE
 895
 896 config PAGE_OFFSET_BOOL
 897         bool "Set custom page offset address"
 898         depends on ADVANCED_OPTIONS
 899         help
 900           This option allows you to set the kernel virtual address at which
 901           the kernel will map low memory.  This can be useful in optimizing
 902           the virtual memory layout of the system.
 903
 904           Say N here unless you know what you are doing.
 905
 906 config PAGE_OFFSET
 907         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 908         default "0xc0000000"
 909
 910 config KERNEL_START_BOOL
 911         bool "Set custom kernel base address"
 912         depends on ADVANCED_OPTIONS
 913         help
 914           This option allows you to set the kernel virtual address at which
 915           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 916           however there are times (like kdump) that one might not want them
 917           to be the same.
 918
 919           Say N here unless you know what you are doing.
 920
 921 config KERNEL_START
 922         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 923         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 924         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 925         default "0xc0000000"
 926
 927 config PHYSICAL_START_BOOL
 928         bool "Set physical address where the kernel is loaded"
 929         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 930         help
 931           This gives the physical address where the kernel is loaded.
 932
 933           Say N here unless you know what you are doing.
 934
 935 config PHYSICAL_START
 936         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 937         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 938         default "0x00000000"
 939
 940 config PHYSICAL_ALIGN
 941         hex
 942         default "0x04000000" if FSL_BOOKE
 943         help
 944           This value puts the alignment restrictions on physical address
 945           where kernel is loaded and run from. Kernel is compiled for an
 946           address which meets above alignment restriction.
 947
 948 config TASK_SIZE_BOOL
 949         bool "Set custom user task size"
 950         depends on ADVANCED_OPTIONS
 951         help
 952           This option allows you to set the amount of virtual address space
 953           allocated to user tasks.  This can be useful in optimizing the
 954           virtual memory layout of the system.
 955
 956           Say N here unless you know what you are doing.
 957
 958 config TASK_SIZE
 959         hex "Size of user task space" if TASK_SIZE_BOOL
 960         default "0x80000000" if PPC_PREP || PPC_8xx
 961         default "0xc0000000"
 962
 963 config CONSISTENT_SIZE_BOOL
 964         bool "Set custom consistent memory pool size"
 965         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 966         help
 967           This option allows you to set the size of the
 968           consistent memory pool.  This pool of virtual memory
 969           is used to make consistent memory allocations.
 970
 971 config CONSISTENT_SIZE
 972         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 973         default "0x00200000" if NOT_COHERENT_CACHE
 974
 975 config PIN_TLB
 976         bool "Pinned Kernel TLBs (860 ONLY)"
 977         depends on ADVANCED_OPTIONS && 8xx
 978 endmenu
 979
 980 if PPC64
 981 config RELOCATABLE
 982         bool "Build a relocatable kernel"
 983         select NONSTATIC_KERNEL
 984         help
 985           This builds a kernel image that is capable of running anywhere
 986           in the RMA (real memory area) at any 16k-aligned base address.
 987           The kernel is linked as a position-independent executable (PIE)
 988           and contains dynamic relocations which are processed early
 989           in the bootup process.
 990
 991           One use is for the kexec on panic case where the recovery kernel
 992           must live at a different physical address than the primary
 993           kernel.
 994
 995 config PAGE_OFFSET
 996         hex
 997         default "0xc000000000000000"
 998 config KERNEL_START
 999         hex
1000         default "0xc000000000000000"
1001 config PHYSICAL_START
1002         hex
1003         default "0x00000000"
1004 endif
1005
1006 source "net/Kconfig"
1007
1008 source "drivers/Kconfig"
1009
1010 source "fs/Kconfig"
1011
1012 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1013
1014 source "lib/Kconfig"
1015
1016 source "arch/powerpc/Kconfig.debug"
1017
1018 source "security/Kconfig"
1019
1020 config KEYS_COMPAT
1021         bool
1022         depends on COMPAT && KEYS
1023         default y
1024
1025 source "crypto/Kconfig"
1026
1027 config PPC_CLOCK
1028         bool
1029         default n
1030         select HAVE_CLK
1031
1032 config PPC_LIB_RHEAP
1033         bool
1034
1035 source "arch/powerpc/kvm/Kconfig"