arch/powerpc/Kconfig

   1 source "arch/powerpc/platforms/Kconfig.cputype"
   2
   3 config PPC32
   4         bool
   5         default y if !PPC64
   6
   7 config 32BIT
   8         bool
   9         default y if PPC32
  10
  11 config 64BIT
  12         bool
  13         default y if PPC64
  14
  15 config WORD_SIZE
  16         int
  17         default 64 if PPC64
  18         default 32 if !PPC64
  19
  20 config ARCH_PHYS_ADDR_T_64BIT
  21        def_bool PPC64 || PHYS_64BIT
  22
  23 config ARCH_DMA_ADDR_T_64BIT
  24         def_bool ARCH_PHYS_ADDR_T_64BIT
  25
  26 config MMU
  27         bool
  28         default y
  29
  30 config HAVE_SETUP_PER_CPU_AREA
  31         def_bool PPC64
  32
  33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  34         def_bool PPC64
  35
  36 config NR_IRQS
  37         int "Number of virtual interrupt numbers"
  38         range 32 32768
  39         default "512"
  40         help
  41           This defines the number of virtual interrupt numbers the kernel
  42           can manage. Virtual interrupt numbers are what you see in
  43           /proc/interrupts. If you configure your system to have too few,
  44           drivers will fail to load or worse - handle with care.
  45
  46 config STACKTRACE_SUPPORT
  47         bool
  48         default y
  49
  50 config HAVE_LATENCYTOP_SUPPORT
  51         def_bool y
  52
  53 config TRACE_IRQFLAGS_SUPPORT
  54         bool
  55         default y
  56
  57 config LOCKDEP_SUPPORT
  58         bool
  59         default y
  60
  61 config RWSEM_GENERIC_SPINLOCK
  62         bool
  63
  64 config RWSEM_XCHGADD_ALGORITHM
  65         bool
  66         default y
  67
  68 config GENERIC_LOCKBREAK
  69         bool
  70         default y
  71         depends on SMP && PREEMPT
  72
  73 config ARCH_HAS_ILOG2_U32
  74         bool
  75         default y
  76
  77 config ARCH_HAS_ILOG2_U64
  78         bool
  79         default y if 64BIT
  80
  81 config GENERIC_HWEIGHT
  82         bool
  83         default y
  84
  85 config PPC
  86         bool
  87         default y
  88         select BINFMT_ELF
  89         select OF
  90         select OF_EARLY_FLATTREE
  91         select HAVE_FTRACE_MCOUNT_RECORD
  92         select HAVE_DYNAMIC_FTRACE
  93         select HAVE_FUNCTION_TRACER
  94         select HAVE_FUNCTION_GRAPH_TRACER
  95         select SYSCTL_EXCEPTION_TRACE
  96         select ARCH_WANT_OPTIONAL_GPIOLIB
  97         select VIRT_TO_BUS if !PPC64
  98         select HAVE_IDE
  99         select HAVE_IOREMAP_PROT
 100         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 101         select HAVE_KPROBES
 102         select HAVE_ARCH_KGDB
 103         select HAVE_KRETPROBES
 104         select HAVE_ARCH_TRACEHOOK
 105         select HAVE_MEMBLOCK
 106         select HAVE_MEMBLOCK_NODE_MAP
 107         select HAVE_DMA_ATTRS
 108         select HAVE_DMA_API_DEBUG
 109         select USE_GENERIC_SMP_HELPERS if SMP
 110         select HAVE_OPROFILE
 111         select HAVE_DEBUG_KMEMLEAK
 112         select GENERIC_ATOMIC64 if PPC32
 113         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 114         select HAVE_PERF_EVENTS
 115         select HAVE_REGS_AND_STACK_ACCESS_API
 116         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 117         select HAVE_GENERIC_HARDIRQS
 118         select ARCH_WANT_IPC_PARSE_VERSION
 119         select SPARSE_IRQ
 120         select IRQ_DOMAIN
 121         select GENERIC_IRQ_SHOW
 122         select GENERIC_IRQ_SHOW_LEVEL
 123         select IRQ_FORCED_THREADING
 124         select HAVE_RCU_TABLE_FREE if SMP
 125         select HAVE_SYSCALL_TRACEPOINTS
 126         select HAVE_BPF_JIT if PPC64
 127         select HAVE_ARCH_JUMP_LABEL
 128         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 129         select GENERIC_SMP_IDLE_THREAD
 130         select GENERIC_CMOS_UPDATE
 131         select GENERIC_TIME_VSYSCALL_OLD
 132         select GENERIC_CLOCKEVENTS
 133         select GENERIC_STRNCPY_FROM_USER
 134         select GENERIC_STRNLEN_USER
 135         select HAVE_MOD_ARCH_SPECIFIC
 136         select MODULES_USE_ELF_RELA
 137         select CLONE_BACKWARDS
 138         select ARCH_USE_BUILTIN_BSWAP
 139         select OLD_SIGSUSPEND
 140         select OLD_SIGACTION if PPC32
 141         select ARCH_SUPPORTS_ATOMIC_RMW
 142
 143 config EARLY_PRINTK
 144         bool
 145         default y
 146
 147 config COMPAT
 148         bool
 149         default y if PPC64
 150         select COMPAT_BINFMT_ELF
 151         select ARCH_WANT_OLD_COMPAT_IPC
 152         select COMPAT_OLD_SIGACTION
 153
 154 config SYSVIPC_COMPAT
 155         bool
 156         depends on COMPAT && SYSVIPC
 157         default y
 158
 159 # All PPC32s use generic nvram driver through ppc_md
 160 config GENERIC_NVRAM
 161         bool
 162         default y if PPC32
 163
 164 config SCHED_OMIT_FRAME_POINTER
 165         bool
 166         default y
 167
 168 config ARCH_MAY_HAVE_PC_FDC
 169         bool
 170         default !PPC_PSERIES || PCI
 171
 172 config PPC_OF
 173         def_bool y
 174
 175 config PPC_UDBG_16550
 176         bool
 177         default n
 178
 179 config GENERIC_TBSYNC
 180         bool
 181         default y if PPC32 && SMP
 182         default n
 183
 184 config AUDIT_ARCH
 185         bool
 186         default y
 187
 188 config GENERIC_BUG
 189         bool
 190         default y
 191         depends on BUG
 192
 193 config SYS_SUPPORTS_APM_EMULATION
 194         default y if PMAC_APM_EMU
 195         bool
 196
 197 config EPAPR_BOOT
 198         bool
 199         help
 200           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 201         default n
 202
 203 config DEFAULT_UIMAGE
 204         bool
 205         help
 206           Used to allow a board to specify it wants a uImage built by default
 207         default n
 208
 209 config REDBOOT
 210         bool
 211
 212 config ARCH_HIBERNATION_POSSIBLE
 213         bool
 214         default y
 215
 216 config ARCH_SUSPEND_POSSIBLE
 217         def_bool y
 218         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 219                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 220                    || 44x || 40x
 221
 222 config PPC_DCR_NATIVE
 223         bool
 224         default n
 225
 226 config PPC_DCR_MMIO
 227         bool
 228         default n
 229
 230 config PPC_DCR
 231         bool
 232         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 233         default y
 234
 235 config PPC_OF_PLATFORM_PCI
 236         bool
 237         depends on PCI
 238         depends on PPC64 # not supported on 32 bits yet
 239         default n
 240
 241 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 242         def_bool y
 243
 244 config ARCH_SUPPORTS_UPROBES
 245         def_bool y
 246
 247 config PPC_ADV_DEBUG_REGS
 248         bool
 249         depends on 40x || BOOKE
 250         default y
 251
 252 config PPC_ADV_DEBUG_IACS
 253         int
 254         depends on PPC_ADV_DEBUG_REGS
 255         default 4 if 44x
 256         default 2
 257
 258 config PPC_ADV_DEBUG_DACS
 259         int
 260         depends on PPC_ADV_DEBUG_REGS
 261         default 2
 262
 263 config PPC_ADV_DEBUG_DVCS
 264         int
 265         depends on PPC_ADV_DEBUG_REGS
 266         default 2 if 44x
 267         default 0
 268
 269 config PPC_ADV_DEBUG_DAC_RANGE
 270         bool
 271         depends on PPC_ADV_DEBUG_REGS && 44x
 272         default y
 273
 274 config PPC_EMULATE_SSTEP
 275         bool
 276         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 277
 278 source "init/Kconfig"
 279
 280 source "kernel/Kconfig.freezer"
 281
 282 source "arch/powerpc/sysdev/Kconfig"
 283 source "arch/powerpc/platforms/Kconfig"
 284
 285 menu "Kernel options"
 286
 287 config HIGHMEM
 288         bool "High memory support"
 289         depends on PPC32
 290
 291 source kernel/Kconfig.hz
 292 source kernel/Kconfig.preempt
 293 source "fs/Kconfig.binfmt"
 294
 295 config HUGETLB_PAGE_SIZE_VARIABLE
 296         bool
 297         depends on HUGETLB_PAGE
 298         default y
 299
 300 config MATH_EMULATION
 301         bool "Math emulation"
 302         depends on 4xx || 8xx || 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 PPC_TRANSACTIONAL_MEM
 312        bool "Transactional Memory support for POWERPC"
 313        depends on PPC_BOOK3S_64
 314        depends on SMP
 315        default n
 316        ---help---
 317          Support user-mode Transactional Memory on POWERPC.
 318
 319 config 8XX_MINIMAL_FPEMU
 320         bool "Minimal math emulation for 8xx"
 321         depends on 8xx && !MATH_EMULATION
 322         help
 323           Older arch/ppc kernels still emulated a few floating point
 324           instructions such as load and store, even when full math
 325           emulation is disabled.  Say "Y" here if you want to preserve
 326           this behavior.
 327
 328           It is recommended that you build a soft-float userspace instead.
 329
 330 config IOMMU_HELPER
 331         def_bool PPC64
 332
 333 config SWIOTLB
 334         bool "SWIOTLB support"
 335         default n
 336         select IOMMU_HELPER
 337         ---help---
 338           Support for IO bounce buffering for systems without an IOMMU.
 339           This allows us to DMA to the full physical address space on
 340           platforms where the size of a physical address is larger
 341           than the bus address.  Not all platforms support this.
 342
 343 config HOTPLUG_CPU
 344         bool "Support for enabling/disabling CPUs"
 345         depends on SMP && HOTPLUG && (PPC_PSERIES || \
 346         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 347         ---help---
 348           Say Y here to be able to disable and re-enable individual
 349           CPUs at runtime on SMP machines.
 350
 351           Say N if you are unsure.
 352
 353 config ARCH_CPU_PROBE_RELEASE
 354         def_bool y
 355         depends on HOTPLUG_CPU
 356
 357 config ARCH_ENABLE_MEMORY_HOTPLUG
 358         def_bool y
 359
 360 config ARCH_HAS_WALK_MEMORY
 361         def_bool y
 362
 363 config ARCH_ENABLE_MEMORY_HOTREMOVE
 364         def_bool y
 365
 366 config KEXEC
 367         bool "kexec system call"
 368         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 369         help
 370           kexec is a system call that implements the ability to shutdown your
 371           current kernel, and to start another kernel.  It is like a reboot
 372           but it is independent of the system firmware.   And like a reboot
 373           you can start any kernel with it, not just Linux.
 374
 375           The name comes from the similarity to the exec system call.
 376
 377           It is an ongoing process to be certain the hardware in a machine
 378           is properly shutdown, so do not be surprised if this code does not
 379           initially work for you.  It may help to enable device hotplugging
 380           support.  As of this writing the exact hardware interface is
 381           strongly in flux, so no good recommendation can be made.
 382
 383 config CRASH_DUMP
 384         bool "Build a kdump crash kernel"
 385         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 386         select RELOCATABLE if PPC64 || 44x
 387         select DYNAMIC_MEMSTART if FSL_BOOKE
 388         help
 389           Build a kernel suitable for use as a kdump capture kernel.
 390           The same kernel binary can be used as production kernel and dump
 391           capture kernel.
 392
 393 config FA_DUMP
 394         bool "Firmware-assisted dump"
 395         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 396         help
 397           A robust mechanism to get reliable kernel crash dump with
 398           assistance from firmware. This approach does not use kexec,
 399           instead firmware assists in booting the kdump kernel
 400           while preserving memory contents. Firmware-assisted dump
 401           is meant to be a kdump replacement offering robustness and
 402           speed not possible without system firmware assistance.
 403
 404           If unsure, say "N"
 405
 406 config IRQ_ALL_CPUS
 407         bool "Distribute interrupts on all CPUs by default"
 408         depends on SMP && !MV64360
 409         help
 410           This option gives the kernel permission to distribute IRQs across
 411           multiple CPUs.  Saying N here will route all IRQs to the first
 412           CPU.  Generally saying Y is safe, although some problems have been
 413           reported with SMP Power Macintoshes with this option enabled.
 414
 415 config NUMA
 416         bool "NUMA support"
 417         depends on PPC64
 418         default y if SMP && PPC_PSERIES
 419
 420 config NODES_SHIFT
 421         int
 422         default "8" if PPC64
 423         default "4"
 424         depends on NEED_MULTIPLE_NODES
 425
 426 config ARCH_SELECT_MEMORY_MODEL
 427         def_bool y
 428         depends on PPC64
 429
 430 config ARCH_FLATMEM_ENABLE
 431         def_bool y
 432         depends on (PPC64 && !NUMA) || PPC32
 433
 434 config ARCH_SPARSEMEM_ENABLE
 435         def_bool y
 436         depends on PPC64
 437         select SPARSEMEM_VMEMMAP_ENABLE
 438
 439 config ARCH_SPARSEMEM_DEFAULT
 440         def_bool y
 441         depends on (SMP && PPC_PSERIES) || PPC_PS3
 442
 443 config SYS_SUPPORTS_HUGETLBFS
 444         bool
 445
 446 source "mm/Kconfig"
 447
 448 config ARCH_MEMORY_PROBE
 449         def_bool y
 450         depends on MEMORY_HOTPLUG
 451
 452 # Some NUMA nodes have memory ranges that span
 453 # other nodes.  Even though a pfn is valid and
 454 # between a node's start and end pfns, it may not
 455 # reside on that node.  See memmap_init_zone()
 456 # for details.
 457 config NODES_SPAN_OTHER_NODES
 458         def_bool y
 459         depends on NEED_MULTIPLE_NODES
 460
 461 config PPC_HAS_HASH_64K
 462         bool
 463         depends on PPC64
 464         default n
 465
 466 config STDBINUTILS
 467         bool "Using standard binutils settings"
 468         depends on 44x
 469         default y
 470         help
 471           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 472           Note, that kernel will be able to run only those applications,
 473           which had been compiled using binutils later than 2.17.50.0.3 with
 474           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 475           the older binutils, you can patch them with a trivial patch, which
 476           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 477
 478 choice
 479         prompt "Page size"
 480         default PPC_4K_PAGES
 481         help
 482           Select the kernel logical page size. Increasing the page size
 483           will reduce software overhead at each page boundary, allow
 484           hardware prefetch mechanisms to be more effective, and allow
 485           larger dma transfers increasing IO efficiency and reducing
 486           overhead. However the utilization of memory will increase.
 487           For example, each cached file will using a multiple of the
 488           page size to hold its contents and the difference between the
 489           end of file and the end of page is wasted.
 490
 491           Some dedicated systems, such as software raid serving with
 492           accelerated calculations, have shown significant increases.
 493
 494           If you configure a 64 bit kernel for 64k pages but the
 495           processor does not support them, then the kernel will simulate
 496           them with 4k pages, loading them on demand, but with the
 497           reduced software overhead and larger internal fragmentation.
 498           For the 32 bit kernel, a large page option will not be offered
 499           unless it is supported by the configured processor.
 500
 501           If unsure, choose 4K_PAGES.
 502
 503 config PPC_4K_PAGES
 504         bool "4k page size"
 505
 506 config PPC_16K_PAGES
 507         bool "16k page size" if 44x
 508
 509 config PPC_64K_PAGES
 510         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 511         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 512
 513 config PPC_256K_PAGES
 514         bool "256k page size" if 44x
 515         depends on !STDBINUTILS
 516         help
 517           Make the page size 256k.
 518
 519           As the ELF standard only requires alignment to support page
 520           sizes up to 64k, you will need to compile all of your user
 521           space applications with a non-standard binutils settings
 522           (see the STDBINUTILS description for details).
 523
 524           Say N unless you know what you are doing.
 525
 526 endchoice
 527
 528 config FORCE_MAX_ZONEORDER
 529         int "Maximum zone order"
 530         range 9 64 if PPC64 && PPC_64K_PAGES
 531         default "9" if PPC64 && PPC_64K_PAGES
 532         range 13 64 if PPC64 && !PPC_64K_PAGES
 533         default "13" if PPC64 && !PPC_64K_PAGES
 534         range 9 64 if PPC32 && PPC_16K_PAGES
 535         default "9" if PPC32 && PPC_16K_PAGES
 536         range 7 64 if PPC32 && PPC_64K_PAGES
 537         default "7" if PPC32 && PPC_64K_PAGES
 538         range 5 64 if PPC32 && PPC_256K_PAGES
 539         default "5" if PPC32 && PPC_256K_PAGES
 540         range 11 64
 541         default "11"
 542         help
 543           The kernel memory allocator divides physically contiguous memory
 544           blocks into "zones", where each zone is a power of two number of
 545           pages.  This option selects the largest power of two that the kernel
 546           keeps in the memory allocator.  If you need to allocate very large
 547           blocks of physically contiguous memory, then you may need to
 548           increase this value.
 549
 550           This config option is actually maximum order plus one. For example,
 551           a value of 11 means that the largest free memory block is 2^10 pages.
 552
 553           The page size is not necessarily 4KB.  For example, on 64-bit
 554           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 555           this in mind when choosing a value for this option.
 556
 557 config PPC_SUBPAGE_PROT
 558         bool "Support setting protections for 4k subpages"
 559         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 560         help
 561           This option adds support for a system call to allow user programs
 562           to set access permissions (read/write, readonly, or no access)
 563           on the 4k subpages of each 64k page.
 564
 565 config SCHED_SMT
 566         bool "SMT (Hyperthreading) scheduler support"
 567         depends on PPC64 && SMP
 568         help
 569           SMT scheduler support improves the CPU scheduler's decision making
 570           when dealing with POWER5 cpus at a cost of slightly increased
 571           overhead in some places. If unsure say N here.
 572
 573 config PPC_DENORMALISATION
 574         bool "PowerPC denormalisation exception handling"
 575         depends on PPC_BOOK3S_64
 576         default "y" if PPC_POWERNV
 577         ---help---
 578           Add support for handling denormalisation of single precision
 579           values.  Useful for bare metal only.  If unsure say Y here.
 580
 581 config CMDLINE_BOOL
 582         bool "Default bootloader kernel arguments"
 583
 584 config CMDLINE
 585         string "Initial kernel command string"
 586         depends on CMDLINE_BOOL
 587         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 588         help
 589           On some platforms, there is currently no way for the boot loader to
 590           pass arguments to the kernel. For these platforms, you can supply
 591           some command-line options at build time by entering them here.  In
 592           most cases you will need to specify the root device here.
 593
 594 config EXTRA_TARGETS
 595         string "Additional default image types"
 596         help
 597           List additional targets to be built by the bootwrapper here (separated
 598           by spaces).  This is useful for targets that depend of device tree
 599           files in the .dts directory.
 600
 601           Targets in this list will be build as part of the default build
 602           target, or when the user does a 'make zImage' or a
 603           'make zImage.initrd'.
 604
 605           If unsure, leave blank
 606
 607 config ARCH_WANTS_FREEZER_CONTROL
 608         def_bool y
 609         depends on ADB_PMU
 610
 611 source kernel/power/Kconfig
 612
 613 config SECCOMP
 614         bool "Enable seccomp to safely compute untrusted bytecode"
 615         depends on PROC_FS
 616         default y
 617         help
 618           This kernel feature is useful for number crunching applications
 619           that may need to compute untrusted bytecode during their
 620           execution. By using pipes or other transports made available to
 621           the process as file descriptors supporting the read/write
 622           syscalls, it's possible to isolate those applications in
 623           their own address space using seccomp. Once seccomp is
 624           enabled via /proc/<pid>/seccomp, it cannot be disabled
 625           and the task is only allowed to execute a few safe syscalls
 626           defined by each seccomp mode.
 627
 628           If unsure, say Y. Only embedded should say N here.
 629
 630 endmenu
 631
 632 config ISA_DMA_API
 633         bool
 634         default PCI
 635
 636 menu "Bus options"
 637
 638 config ISA
 639         bool "Support for ISA-bus hardware"
 640         depends on PPC_CHRP
 641         select PPC_I8259
 642         help
 643           Find out whether you have ISA slots on your motherboard.  ISA is the
 644           name of a bus system, i.e. the way the CPU talks to the other stuff
 645           inside your box.  If you have an Apple machine, say N here; if you
 646           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 647           embedded board, consult your board documentation.
 648
 649 config ZONE_DMA
 650         bool
 651         default y
 652
 653 config NEED_DMA_MAP_STATE
 654         def_bool (PPC64 || NOT_COHERENT_CACHE)
 655
 656 config NEED_SG_DMA_LENGTH
 657         def_bool y
 658
 659 config GENERIC_ISA_DMA
 660         bool
 661         depends on ISA_DMA_API
 662         default y
 663
 664 config PPC_INDIRECT_PCI
 665         bool
 666         depends on PCI
 667         default y if 40x || 44x
 668         default n
 669
 670 config EISA
 671         bool
 672
 673 config SBUS
 674         bool
 675
 676 config FSL_SOC
 677         bool
 678         select HAVE_CAN_FLEXCAN if NET && CAN
 679
 680 config FSL_PCI
 681         bool
 682         select PPC_INDIRECT_PCI
 683         select PCI_QUIRKS
 684
 685 config FSL_PMC
 686         bool
 687         default y
 688         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 689         help
 690           Freescale MPC85xx/MPC86xx power management controller support
 691           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 692
 693 config PPC4xx_CPM
 694         bool
 695         default y
 696         depends on SUSPEND && (44x || 40x)
 697         help
 698           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 699           It also enables support for two different idle states (idle-wait
 700           and idle-doze).
 701
 702 config 4xx_SOC
 703         bool
 704
 705 config FSL_LBC
 706         bool "Freescale Local Bus support"
 707         depends on FSL_SOC
 708         help
 709           Enables reporting of errors from the Freescale local bus
 710           controller.  Also contains some common code used by
 711           drivers for specific local bus peripherals.
 712
 713 config FSL_IFC
 714         bool
 715         depends on FSL_SOC
 716
 717 config FSL_GTM
 718         bool
 719         depends on PPC_83xx || QUICC_ENGINE || CPM2
 720         help
 721           Freescale General-purpose Timers support
 722
 723 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 724 config MCA
 725         bool
 726
 727 # Platforms that what PCI turned unconditionally just do select PCI
 728 # in their config node.  Platforms that want to choose at config
 729 # time should select PPC_PCI_CHOICE
 730 config PPC_PCI_CHOICE
 731         bool
 732
 733 config PCI
 734         bool "PCI support" if PPC_PCI_CHOICE
 735         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 736                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 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 source "drivers/pci/pcie/Kconfig"
 767
 768 source "drivers/pci/Kconfig"
 769
 770 source "drivers/pcmcia/Kconfig"
 771
 772 source "drivers/pci/hotplug/Kconfig"
 773
 774 config HAS_RAPIDIO
 775         bool
 776         default n
 777
 778 config RAPIDIO
 779         bool "RapidIO support"
 780         depends on HAS_RAPIDIO || PCI
 781         help
 782           If you say Y here, the kernel will include drivers and
 783           infrastructure code to support RapidIO interconnect devices.
 784
 785 config FSL_RIO
 786         bool "Freescale Embedded SRIO Controller support"
 787         depends on RAPIDIO && HAS_RAPIDIO
 788         default "n"
 789         ---help---
 790           Include support for RapidIO controller on Freescale embedded
 791           processors (MPC8548, MPC8641, etc).
 792
 793 source "drivers/rapidio/Kconfig"
 794
 795 endmenu
 796
 797 config NONSTATIC_KERNEL
 798         bool
 799         default n
 800
 801 menu "Advanced setup"
 802         depends on PPC32
 803
 804 config ADVANCED_OPTIONS
 805         bool "Prompt for advanced kernel configuration options"
 806         help
 807           This option will enable prompting for a variety of advanced kernel
 808           configuration options.  These options can cause the kernel to not
 809           work if they are set incorrectly, but can be used to optimize certain
 810           aspects of kernel memory management.
 811
 812           Unless you know what you are doing, say N here.
 813
 814 comment "Default settings for advanced configuration options are used"
 815         depends on !ADVANCED_OPTIONS
 816
 817 config LOWMEM_SIZE_BOOL
 818         bool "Set maximum low memory"
 819         depends on ADVANCED_OPTIONS
 820         help
 821           This option allows you to set the maximum amount of memory which
 822           will be used as "low memory", that is, memory which the kernel can
 823           access directly, without having to set up a kernel virtual mapping.
 824           This can be useful in optimizing the layout of kernel virtual
 825           memory.
 826
 827           Say N here unless you know what you are doing.
 828
 829 config LOWMEM_SIZE
 830         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 831         default "0x30000000"
 832
 833 config LOWMEM_CAM_NUM_BOOL
 834         bool "Set number of CAMs to use to map low memory"
 835         depends on ADVANCED_OPTIONS && FSL_BOOKE
 836         help
 837           This option allows you to set the maximum number of CAM slots that
 838           will be used to map low memory.  There are a limited number of slots
 839           available and even more limited number that will fit in the L1 MMU.
 840           However, using more entries will allow mapping more low memory.  This
 841           can be useful in optimizing the layout of kernel virtual memory.
 842
 843           Say N here unless you know what you are doing.
 844
 845 config LOWMEM_CAM_NUM
 846         depends on FSL_BOOKE
 847         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 848         default 3
 849
 850 config DYNAMIC_MEMSTART
 851         bool "Enable page aligned dynamic load address for kernel"
 852         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 853         select NONSTATIC_KERNEL
 854         help
 855           This option enables the kernel to be loaded at any page aligned
 856           physical address. The kernel creates a mapping from KERNELBASE to
 857           the address where the kernel is loaded. The page size here implies
 858           the TLB page size of the mapping for kernel on the particular platform.
 859           Please refer to the init code for finding the TLB page size.
 860
 861           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 862           kernel image, where the only restriction is the page aligned kernel
 863           load address. When this option is enabled, the compile time physical
 864           address CONFIG_PHYSICAL_START is ignored.
 865
 866           This option is overridden by CONFIG_RELOCATABLE
 867
 868 config RELOCATABLE
 869         bool "Build a relocatable kernel"
 870         depends on ADVANCED_OPTIONS && FLATMEM && 44x
 871         select NONSTATIC_KERNEL
 872         help
 873           This builds a kernel image that is capable of running at the
 874           location the kernel is loaded at, without any alignment restrictions.
 875           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 876
 877           One use is for the kexec on panic case where the recovery kernel
 878           must live at a different physical address than the primary
 879           kernel.
 880
 881           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 882           it has been loaded at and the compile time physical addresses
 883           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 884           setting can still be useful to bootwrappers that need to know the
 885           load address of the kernel (eg. u-boot/mkimage).
 886
 887 config RELOCATABLE_PPC32
 888         def_bool y
 889         depends on PPC32 && RELOCATABLE
 890
 891 config PAGE_OFFSET_BOOL
 892         bool "Set custom page offset address"
 893         depends on ADVANCED_OPTIONS
 894         help
 895           This option allows you to set the kernel virtual address at which
 896           the kernel will map low memory.  This can be useful in optimizing
 897           the virtual memory layout of the system.
 898
 899           Say N here unless you know what you are doing.
 900
 901 config PAGE_OFFSET
 902         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 903         default "0xc0000000"
 904
 905 config KERNEL_START_BOOL
 906         bool "Set custom kernel base address"
 907         depends on ADVANCED_OPTIONS
 908         help
 909           This option allows you to set the kernel virtual address at which
 910           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 911           however there are times (like kdump) that one might not want them
 912           to be the same.
 913
 914           Say N here unless you know what you are doing.
 915
 916 config KERNEL_START
 917         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 918         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 919         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 920         default "0xc0000000"
 921
 922 config PHYSICAL_START_BOOL
 923         bool "Set physical address where the kernel is loaded"
 924         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 925         help
 926           This gives the physical address where the kernel is loaded.
 927
 928           Say N here unless you know what you are doing.
 929
 930 config PHYSICAL_START
 931         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 932         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 933         default "0x00000000"
 934
 935 config PHYSICAL_ALIGN
 936         hex
 937         default "0x04000000" if FSL_BOOKE
 938         help
 939           This value puts the alignment restrictions on physical address
 940           where kernel is loaded and run from. Kernel is compiled for an
 941           address which meets above alignment restriction.
 942
 943 config TASK_SIZE_BOOL
 944         bool "Set custom user task size"
 945         depends on ADVANCED_OPTIONS
 946         help
 947           This option allows you to set the amount of virtual address space
 948           allocated to user tasks.  This can be useful in optimizing the
 949           virtual memory layout of the system.
 950
 951           Say N here unless you know what you are doing.
 952
 953 config TASK_SIZE
 954         hex "Size of user task space" if TASK_SIZE_BOOL
 955         default "0x80000000" if PPC_8xx
 956         default "0xc0000000"
 957
 958 config CONSISTENT_SIZE_BOOL
 959         bool "Set custom consistent memory pool size"
 960         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 961         help
 962           This option allows you to set the size of the
 963           consistent memory pool.  This pool of virtual memory
 964           is used to make consistent memory allocations.
 965
 966 config CONSISTENT_SIZE
 967         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 968         default "0x00200000" if NOT_COHERENT_CACHE
 969
 970 config PIN_TLB
 971         bool "Pinned Kernel TLBs (860 ONLY)"
 972         depends on ADVANCED_OPTIONS && 8xx
 973 endmenu
 974
 975 if PPC64
 976 config RELOCATABLE
 977         bool "Build a relocatable kernel"
 978         select NONSTATIC_KERNEL
 979         help
 980           This builds a kernel image that is capable of running anywhere
 981           in the RMA (real memory area) at any 16k-aligned base address.
 982           The kernel is linked as a position-independent executable (PIE)
 983           and contains dynamic relocations which are processed early
 984           in the bootup process.
 985
 986           One use is for the kexec on panic case where the recovery kernel
 987           must live at a different physical address than the primary
 988           kernel.
 989
 990 # This value must have zeroes in the bottom 60 bits otherwise lots will break
 991 config PAGE_OFFSET
 992         hex
 993         default "0xc000000000000000"
 994 config KERNEL_START
 995         hex
 996         default "0xc000000000000000"
 997 config PHYSICAL_START
 998         hex
 999         default "0x00000000"
1000 endif
1001
1002 source "net/Kconfig"
1003
1004 source "drivers/Kconfig"
1005
1006 source "fs/Kconfig"
1007
1008 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1009
1010 source "lib/Kconfig"
1011
1012 source "arch/powerpc/Kconfig.debug"
1013
1014 source "security/Kconfig"
1015
1016 config KEYS_COMPAT
1017         bool
1018         depends on COMPAT && KEYS
1019         default y
1020
1021 source "crypto/Kconfig"
1022
1023 config PPC_CLOCK
1024         bool
1025         default n
1026         select HAVE_CLK
1027
1028 config PPC_LIB_RHEAP
1029         bool
1030
1031 source "arch/powerpc/kvm/Kconfig"