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 ARCH_WANT_OPTIONAL_GPIOLIB
 103         select HAVE_IDE
 104         select HAVE_IOREMAP_PROT
 105         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 106         select HAVE_KPROBES
 107         select HAVE_ARCH_KGDB
 108         select HAVE_KRETPROBES
 109         select HAVE_ARCH_TRACEHOOK
 110         select HAVE_MEMBLOCK
 111         select HAVE_MEMBLOCK_NODE_MAP
 112         select HAVE_DMA_ATTRS
 113         select HAVE_DMA_API_DEBUG
 114         select USE_GENERIC_SMP_HELPERS if SMP
 115         select HAVE_OPROFILE
 116         select HAVE_SYSCALL_WRAPPERS if PPC64
 117         select GENERIC_ATOMIC64 if PPC32
 118         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 119         select HAVE_IRQ_WORK
 120         select HAVE_PERF_EVENTS
 121         select HAVE_REGS_AND_STACK_ACCESS_API
 122         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 123         select HAVE_GENERIC_HARDIRQS
 124         select ARCH_WANT_IPC_PARSE_VERSION
 125         select SPARSE_IRQ
 126         select IRQ_PER_CPU
 127         select IRQ_DOMAIN
 128         select GENERIC_IRQ_SHOW
 129         select GENERIC_IRQ_SHOW_LEVEL
 130         select IRQ_FORCED_THREADING
 131         select HAVE_RCU_TABLE_FREE if SMP
 132         select HAVE_SYSCALL_TRACEPOINTS
 133         select HAVE_BPF_JIT if PPC64
 134         select HAVE_ARCH_JUMP_LABEL
 135         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 136         select GENERIC_SMP_IDLE_THREAD
 137         select GENERIC_CMOS_UPDATE
 138         select GENERIC_TIME_VSYSCALL
 139         select GENERIC_CLOCKEVENTS
 140         select GENERIC_STRNCPY_FROM_USER
 141         select GENERIC_STRNLEN_USER
 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
 153 config SYSVIPC_COMPAT
 154         bool
 155         depends on COMPAT && SYSVIPC
 156         default y
 157
 158 # All PPC32s use generic nvram driver through ppc_md
 159 config GENERIC_NVRAM
 160         bool
 161         default y if PPC32
 162
 163 config SCHED_OMIT_FRAME_POINTER
 164         bool
 165         default y
 166
 167 config ARCH_MAY_HAVE_PC_FDC
 168         bool
 169         default !PPC_PSERIES || PCI
 170
 171 config PPC_OF
 172         def_bool y
 173
 174 config PPC_UDBG_16550
 175         bool
 176         default n
 177
 178 config GENERIC_TBSYNC
 179         bool
 180         default y if PPC32 && SMP
 181         default n
 182
 183 config AUDIT_ARCH
 184         bool
 185         default y
 186
 187 config GENERIC_BUG
 188         bool
 189         default y
 190         depends on BUG
 191
 192 config SYS_SUPPORTS_APM_EMULATION
 193         default y if PMAC_APM_EMU
 194         bool
 195
 196 config EPAPR_BOOT
 197         bool
 198         help
 199           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 200         default n
 201
 202 config DEFAULT_UIMAGE
 203         bool
 204         help
 205           Used to allow a board to specify it wants a uImage built by default
 206         default n
 207
 208 config REDBOOT
 209         bool
 210
 211 config ARCH_HIBERNATION_POSSIBLE
 212         bool
 213         default y
 214
 215 config ARCH_SUSPEND_POSSIBLE
 216         def_bool y
 217         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 218                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 219                    || 44x || 40x
 220
 221 config PPC_DCR_NATIVE
 222         bool
 223         default n
 224
 225 config PPC_DCR_MMIO
 226         bool
 227         default n
 228
 229 config PPC_DCR
 230         bool
 231         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 232         default y
 233
 234 config PPC_OF_PLATFORM_PCI
 235         bool
 236         depends on PCI
 237         depends on PPC64 # not supported on 32 bits yet
 238         default n
 239
 240 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 241         def_bool y
 242
 243 config ARCH_SUPPORTS_UPROBES
 244         def_bool y
 245
 246 config PPC_ADV_DEBUG_REGS
 247         bool
 248         depends on 40x || BOOKE
 249         default y
 250
 251 config PPC_ADV_DEBUG_IACS
 252         int
 253         depends on PPC_ADV_DEBUG_REGS
 254         default 4 if 44x
 255         default 2
 256
 257 config PPC_ADV_DEBUG_DACS
 258         int
 259         depends on PPC_ADV_DEBUG_REGS
 260         default 2
 261
 262 config PPC_ADV_DEBUG_DVCS
 263         int
 264         depends on PPC_ADV_DEBUG_REGS
 265         default 2 if 44x
 266         default 0
 267
 268 config PPC_ADV_DEBUG_DAC_RANGE
 269         bool
 270         depends on PPC_ADV_DEBUG_REGS && 44x
 271         default y
 272
 273 source "init/Kconfig"
 274
 275 source "kernel/Kconfig.freezer"
 276
 277 source "arch/powerpc/sysdev/Kconfig"
 278 source "arch/powerpc/platforms/Kconfig"
 279
 280 menu "Kernel options"
 281
 282 config HIGHMEM
 283         bool "High memory support"
 284         depends on PPC32
 285
 286 source kernel/Kconfig.hz
 287 source kernel/Kconfig.preempt
 288 source "fs/Kconfig.binfmt"
 289
 290 config HUGETLB_PAGE_SIZE_VARIABLE
 291         bool
 292         depends on HUGETLB_PAGE
 293         default y
 294
 295 config MATH_EMULATION
 296         bool "Math emulation"
 297         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 298         ---help---
 299           Some PowerPC chips designed for embedded applications do not have
 300           a floating-point unit and therefore do not implement the
 301           floating-point instructions in the PowerPC instruction set.  If you
 302           say Y here, the kernel will include code to emulate a floating-point
 303           unit, which will allow programs that use floating-point
 304           instructions to run.
 305
 306 config 8XX_MINIMAL_FPEMU
 307         bool "Minimal math emulation for 8xx"
 308         depends on 8xx && !MATH_EMULATION
 309         help
 310           Older arch/ppc kernels still emulated a few floating point
 311           instructions such as load and store, even when full math
 312           emulation is disabled.  Say "Y" here if you want to preserve
 313           this behavior.
 314
 315           It is recommended that you build a soft-float userspace instead.
 316
 317 config IOMMU_HELPER
 318         def_bool PPC64
 319
 320 config SWIOTLB
 321         bool "SWIOTLB support"
 322         default n
 323         select IOMMU_HELPER
 324         ---help---
 325           Support for IO bounce buffering for systems without an IOMMU.
 326           This allows us to DMA to the full physical address space on
 327           platforms where the size of a physical address is larger
 328           than the bus address.  Not all platforms support this.
 329
 330 config HOTPLUG_CPU
 331         bool "Support for enabling/disabling CPUs"
 332         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
 333         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 334         ---help---
 335           Say Y here to be able to disable and re-enable individual
 336           CPUs at runtime on SMP machines.
 337
 338           Say N if you are unsure.
 339
 340 config ARCH_CPU_PROBE_RELEASE
 341         def_bool y
 342         depends on HOTPLUG_CPU
 343
 344 config ARCH_ENABLE_MEMORY_HOTPLUG
 345         def_bool y
 346
 347 config ARCH_HAS_WALK_MEMORY
 348         def_bool y
 349
 350 config ARCH_ENABLE_MEMORY_HOTREMOVE
 351         def_bool y
 352
 353 config KEXEC
 354         bool "kexec system call (EXPERIMENTAL)"
 355         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
 356         help
 357           kexec is a system call that implements the ability to shutdown your
 358           current kernel, and to start another kernel.  It is like a reboot
 359           but it is independent of the system firmware.   And like a reboot
 360           you can start any kernel with it, not just Linux.
 361
 362           The name comes from the similarity to the exec system call.
 363
 364           It is an ongoing process to be certain the hardware in a machine
 365           is properly shutdown, so do not be surprised if this code does not
 366           initially work for you.  It may help to enable device hotplugging
 367           support.  As of this writing the exact hardware interface is
 368           strongly in flux, so no good recommendation can be made.
 369
 370 config CRASH_DUMP
 371         bool "Build a kdump crash kernel"
 372         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 373         select RELOCATABLE if PPC64 || 44x
 374         select DYNAMIC_MEMSTART if FSL_BOOKE
 375         help
 376           Build a kernel suitable for use as a kdump capture kernel.
 377           The same kernel binary can be used as production kernel and dump
 378           capture kernel.
 379
 380 config FA_DUMP
 381         bool "Firmware-assisted dump"
 382         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 383         help
 384           A robust mechanism to get reliable kernel crash dump with
 385           assistance from firmware. This approach does not use kexec,
 386           instead firmware assists in booting the kdump kernel
 387           while preserving memory contents. Firmware-assisted dump
 388           is meant to be a kdump replacement offering robustness and
 389           speed not possible without system firmware assistance.
 390
 391           If unsure, say "N"
 392
 393 config IRQ_ALL_CPUS
 394         bool "Distribute interrupts on all CPUs by default"
 395         depends on SMP && !MV64360
 396         help
 397           This option gives the kernel permission to distribute IRQs across
 398           multiple CPUs.  Saying N here will route all IRQs to the first
 399           CPU.  Generally saying Y is safe, although some problems have been
 400           reported with SMP Power Macintoshes with this option enabled.
 401
 402 config NUMA
 403         bool "NUMA support"
 404         depends on PPC64
 405         default y if SMP && PPC_PSERIES
 406
 407 config NODES_SHIFT
 408         int
 409         default "8" if PPC64
 410         default "4"
 411         depends on NEED_MULTIPLE_NODES
 412
 413 config MAX_ACTIVE_REGIONS
 414         int
 415         default "256" if PPC64
 416         default "32"
 417
 418 config ARCH_SELECT_MEMORY_MODEL
 419         def_bool y
 420         depends on PPC64
 421
 422 config ARCH_FLATMEM_ENABLE
 423         def_bool y
 424         depends on (PPC64 && !NUMA) || PPC32
 425
 426 config ARCH_SPARSEMEM_ENABLE
 427         def_bool y
 428         depends on PPC64
 429         select SPARSEMEM_VMEMMAP_ENABLE
 430
 431 config ARCH_SPARSEMEM_DEFAULT
 432         def_bool y
 433         depends on (SMP && PPC_PSERIES) || PPC_PS3
 434
 435 config SYS_SUPPORTS_HUGETLBFS
 436         bool
 437
 438 source "mm/Kconfig"
 439
 440 config ARCH_MEMORY_PROBE
 441         def_bool y
 442         depends on MEMORY_HOTPLUG
 443
 444 # Some NUMA nodes have memory ranges that span
 445 # other nodes.  Even though a pfn is valid and
 446 # between a node's start and end pfns, it may not
 447 # reside on that node.  See memmap_init_zone()
 448 # for details.
 449 config NODES_SPAN_OTHER_NODES
 450         def_bool y
 451         depends on NEED_MULTIPLE_NODES
 452
 453 config PPC_HAS_HASH_64K
 454         bool
 455         depends on PPC64
 456         default n
 457
 458 config STDBINUTILS
 459         bool "Using standard binutils settings"
 460         depends on 44x
 461         default y
 462         help
 463           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 464           Note, that kernel will be able to run only those applications,
 465           which had been compiled using binutils later than 2.17.50.0.3 with
 466           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 467           the older binutils, you can patch them with a trivial patch, which
 468           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 469
 470 choice
 471         prompt "Page size"
 472         default PPC_4K_PAGES
 473         help
 474           Select the kernel logical page size. Increasing the page size
 475           will reduce software overhead at each page boundary, allow
 476           hardware prefetch mechanisms to be more effective, and allow
 477           larger dma transfers increasing IO efficiency and reducing
 478           overhead. However the utilization of memory will increase.
 479           For example, each cached file will using a multiple of the
 480           page size to hold its contents and the difference between the
 481           end of file and the end of page is wasted.
 482
 483           Some dedicated systems, such as software raid serving with
 484           accelerated calculations, have shown significant increases.
 485
 486           If you configure a 64 bit kernel for 64k pages but the
 487           processor does not support them, then the kernel will simulate
 488           them with 4k pages, loading them on demand, but with the
 489           reduced software overhead and larger internal fragmentation.
 490           For the 32 bit kernel, a large page option will not be offered
 491           unless it is supported by the configured processor.
 492
 493           If unsure, choose 4K_PAGES.
 494
 495 config PPC_4K_PAGES
 496         bool "4k page size"
 497
 498 config PPC_16K_PAGES
 499         bool "16k page size" if 44x
 500
 501 config PPC_64K_PAGES
 502         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 503         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 504
 505 config PPC_256K_PAGES
 506         bool "256k page size" if 44x
 507         depends on !STDBINUTILS
 508         help
 509           Make the page size 256k.
 510
 511           As the ELF standard only requires alignment to support page
 512           sizes up to 64k, you will need to compile all of your user
 513           space applications with a non-standard binutils settings
 514           (see the STDBINUTILS description for details).
 515
 516           Say N unless you know what you are doing.
 517
 518 endchoice
 519
 520 config FORCE_MAX_ZONEORDER
 521         int "Maximum zone order"
 522         range 9 64 if PPC64 && PPC_64K_PAGES
 523         default "9" if PPC64 && PPC_64K_PAGES
 524         range 13 64 if PPC64 && !PPC_64K_PAGES
 525         default "13" if PPC64 && !PPC_64K_PAGES
 526         range 9 64 if PPC32 && PPC_16K_PAGES
 527         default "9" if PPC32 && PPC_16K_PAGES
 528         range 7 64 if PPC32 && PPC_64K_PAGES
 529         default "7" if PPC32 && PPC_64K_PAGES
 530         range 5 64 if PPC32 && PPC_256K_PAGES
 531         default "5" if PPC32 && PPC_256K_PAGES
 532         range 11 64
 533         default "11"
 534         help
 535           The kernel memory allocator divides physically contiguous memory
 536           blocks into "zones", where each zone is a power of two number of
 537           pages.  This option selects the largest power of two that the kernel
 538           keeps in the memory allocator.  If you need to allocate very large
 539           blocks of physically contiguous memory, then you may need to
 540           increase this value.
 541
 542           This config option is actually maximum order plus one. For example,
 543           a value of 11 means that the largest free memory block is 2^10 pages.
 544
 545           The page size is not necessarily 4KB.  For example, on 64-bit
 546           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 547           this in mind when choosing a value for this option.
 548
 549 config PPC_SUBPAGE_PROT
 550         bool "Support setting protections for 4k subpages"
 551         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 552         help
 553           This option adds support for a system call to allow user programs
 554           to set access permissions (read/write, readonly, or no access)
 555           on the 4k subpages of each 64k page.
 556
 557 config SCHED_SMT
 558         bool "SMT (Hyperthreading) scheduler support"
 559         depends on PPC64 && SMP
 560         help
 561           SMT scheduler support improves the CPU scheduler's decision making
 562           when dealing with POWER5 cpus at a cost of slightly increased
 563           overhead in some places. If unsure say N here.
 564
 565 config PPC_DENORMALISATION
 566         bool "PowerPC denormalisation exception handling"
 567         depends on PPC_BOOK3S_64
 568         default "n"
 569         ---help---
 570           Add support for handling denormalisation of single precision
 571           values.  Useful for bare metal only.  If unsure say Y here.
 572
 573 config CMDLINE_BOOL
 574         bool "Default bootloader kernel arguments"
 575
 576 config CMDLINE
 577         string "Initial kernel command string"
 578         depends on CMDLINE_BOOL
 579         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 580         help
 581           On some platforms, there is currently no way for the boot loader to
 582           pass arguments to the kernel. For these platforms, you can supply
 583           some command-line options at build time by entering them here.  In
 584           most cases you will need to specify the root device here.
 585
 586 config EXTRA_TARGETS
 587         string "Additional default image types"
 588         help
 589           List additional targets to be built by the bootwrapper here (separated
 590           by spaces).  This is useful for targets that depend of device tree
 591           files in the .dts directory.
 592
 593           Targets in this list will be build as part of the default build
 594           target, or when the user does a 'make zImage' or a
 595           'make zImage.initrd'.
 596
 597           If unsure, leave blank
 598
 599 config ARCH_WANTS_FREEZER_CONTROL
 600         def_bool y
 601         depends on ADB_PMU
 602
 603 source kernel/power/Kconfig
 604
 605 config SECCOMP
 606         bool "Enable seccomp to safely compute untrusted bytecode"
 607         depends on PROC_FS
 608         default y
 609         help
 610           This kernel feature is useful for number crunching applications
 611           that may need to compute untrusted bytecode during their
 612           execution. By using pipes or other transports made available to
 613           the process as file descriptors supporting the read/write
 614           syscalls, it's possible to isolate those applications in
 615           their own address space using seccomp. Once seccomp is
 616           enabled via /proc/<pid>/seccomp, it cannot be disabled
 617           and the task is only allowed to execute a few safe syscalls
 618           defined by each seccomp mode.
 619
 620           If unsure, say Y. Only embedded should say N here.
 621
 622 endmenu
 623
 624 config ISA_DMA_API
 625         bool
 626         default PCI
 627
 628 menu "Bus options"
 629
 630 config ISA
 631         bool "Support for ISA-bus hardware"
 632         depends on PPC_PREP || PPC_CHRP
 633         select PPC_I8259
 634         help
 635           Find out whether you have ISA slots on your motherboard.  ISA is the
 636           name of a bus system, i.e. the way the CPU talks to the other stuff
 637           inside your box.  If you have an Apple machine, say N here; if you
 638           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 639           you have an embedded board, consult your board documentation.
 640
 641 config ZONE_DMA
 642         bool
 643         default y
 644
 645 config NEED_DMA_MAP_STATE
 646         def_bool (PPC64 || NOT_COHERENT_CACHE)
 647
 648 config NEED_SG_DMA_LENGTH
 649         def_bool y
 650
 651 config GENERIC_ISA_DMA
 652         bool
 653         depends on ISA_DMA_API
 654         default y
 655
 656 config PPC_INDIRECT_PCI
 657         bool
 658         depends on PCI
 659         default y if 40x || 44x
 660         default n
 661
 662 config EISA
 663         bool
 664
 665 config SBUS
 666         bool
 667
 668 config FSL_SOC
 669         bool
 670         select HAVE_CAN_FLEXCAN if NET && CAN
 671         select PPC_CLOCK
 672
 673 config FSL_PCI
 674         bool
 675         select PPC_INDIRECT_PCI
 676         select PCI_QUIRKS
 677
 678 config FSL_PMC
 679         bool
 680         default y
 681         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 682         help
 683           Freescale MPC85xx/MPC86xx power management controller support
 684           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 685
 686 config PPC4xx_CPM
 687         bool
 688         default y
 689         depends on SUSPEND && (44x || 40x)
 690         help
 691           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 692           It also enables support for two different idle states (idle-wait
 693           and idle-doze).
 694
 695 config 4xx_SOC
 696         bool
 697
 698 config FSL_LBC
 699         bool "Freescale Local Bus support"
 700         depends on FSL_SOC
 701         help
 702           Enables reporting of errors from the Freescale local bus
 703           controller.  Also contains some common code used by
 704           drivers for specific local bus peripherals.
 705
 706 config FSL_IFC
 707         bool
 708         depends on FSL_SOC
 709
 710 config FSL_GTM
 711         bool
 712         depends on PPC_83xx || QUICC_ENGINE || CPM2
 713         help
 714           Freescale General-purpose Timers support
 715
 716 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 717 config MCA
 718         bool
 719
 720 # Platforms that what PCI turned unconditionally just do select PCI
 721 # in their config node.  Platforms that want to choose at config
 722 # time should select PPC_PCI_CHOICE
 723 config PPC_PCI_CHOICE
 724         bool
 725
 726 config PCI
 727         bool "PCI support" if PPC_PCI_CHOICE
 728         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 729                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 730         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 731         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 732         select ARCH_SUPPORTS_MSI
 733         select GENERIC_PCI_IOMAP
 734         help
 735           Find out whether your system includes a PCI bus. PCI is the name of
 736           a bus system, i.e. the way the CPU talks to the other stuff inside
 737           your box.  If you say Y here, the kernel will include drivers and
 738           infrastructure code to support PCI bus devices.
 739
 740 config PCI_DOMAINS
 741         def_bool PCI
 742
 743 config PCI_SYSCALL
 744         def_bool PCI
 745
 746 config PCI_QSPAN
 747         bool "QSpan PCI"
 748         depends on !4xx && !CPM2 && 8xx
 749         select PPC_I8259
 750         help
 751           Say Y here if you have a system based on a Motorola 8xx-series
 752           embedded processor with a QSPAN PCI interface, otherwise say N.
 753
 754 config PCI_8260
 755         bool
 756         depends on PCI && 8260
 757         select PPC_INDIRECT_PCI
 758         default y
 759
 760 config 8260_PCI9
 761         bool "Enable workaround for MPC826x erratum PCI 9"
 762         depends on PCI_8260 && !8272
 763         default y
 764
 765 source "drivers/pci/pcie/Kconfig"
 766
 767 source "drivers/pci/Kconfig"
 768
 769 source "drivers/pcmcia/Kconfig"
 770
 771 source "drivers/pci/hotplug/Kconfig"
 772
 773 config HAS_RAPIDIO
 774         bool
 775         default n
 776
 777 config RAPIDIO
 778         bool "RapidIO support"
 779         depends on HAS_RAPIDIO || PCI
 780         help
 781           If you say Y here, the kernel will include drivers and
 782           infrastructure code to support RapidIO interconnect devices.
 783
 784 config FSL_RIO
 785         bool "Freescale Embedded SRIO Controller support"
 786         depends on RAPIDIO && HAS_RAPIDIO
 787         default "n"
 788         ---help---
 789           Include support for RapidIO controller on Freescale embedded
 790           processors (MPC8548, MPC8641, etc).
 791
 792 source "drivers/rapidio/Kconfig"
 793
 794 endmenu
 795
 796 config NONSTATIC_KERNEL
 797         bool
 798         default n
 799
 800 menu "Advanced setup"
 801         depends on PPC32
 802
 803 config ADVANCED_OPTIONS
 804         bool "Prompt for advanced kernel configuration options"
 805         help
 806           This option will enable prompting for a variety of advanced kernel
 807           configuration options.  These options can cause the kernel to not
 808           work if they are set incorrectly, but can be used to optimize certain
 809           aspects of kernel memory management.
 810
 811           Unless you know what you are doing, say N here.
 812
 813 comment "Default settings for advanced configuration options are used"
 814         depends on !ADVANCED_OPTIONS
 815
 816 config LOWMEM_SIZE_BOOL
 817         bool "Set maximum low memory"
 818         depends on ADVANCED_OPTIONS
 819         help
 820           This option allows you to set the maximum amount of memory which
 821           will be used as "low memory", that is, memory which the kernel can
 822           access directly, without having to set up a kernel virtual mapping.
 823           This can be useful in optimizing the layout of kernel virtual
 824           memory.
 825
 826           Say N here unless you know what you are doing.
 827
 828 config LOWMEM_SIZE
 829         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 830         default "0x30000000"
 831
 832 config LOWMEM_CAM_NUM_BOOL
 833         bool "Set number of CAMs to use to map low memory"
 834         depends on ADVANCED_OPTIONS && FSL_BOOKE
 835         help
 836           This option allows you to set the maximum number of CAM slots that
 837           will be used to map low memory.  There are a limited number of slots
 838           available and even more limited number that will fit in the L1 MMU.
 839           However, using more entries will allow mapping more low memory.  This
 840           can be useful in optimizing the layout of kernel virtual memory.
 841
 842           Say N here unless you know what you are doing.
 843
 844 config LOWMEM_CAM_NUM
 845         depends on FSL_BOOKE
 846         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 847         default 3
 848
 849 config DYNAMIC_MEMSTART
 850         bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 851         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 852         select NONSTATIC_KERNEL
 853         help
 854           This option enables the kernel to be loaded at any page aligned
 855           physical address. The kernel creates a mapping from KERNELBASE to
 856           the address where the kernel is loaded. The page size here implies
 857           the TLB page size of the mapping for kernel on the particular platform.
 858           Please refer to the init code for finding the TLB page size.
 859
 860           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 861           kernel image, where the only restriction is the page aligned kernel
 862           load address. When this option is enabled, the compile time physical
 863           address CONFIG_PHYSICAL_START is ignored.
 864
 865           This option is overridden by CONFIG_RELOCATABLE
 866
 867 config RELOCATABLE
 868         bool "Build a relocatable kernel (EXPERIMENTAL)"
 869         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
 870         select NONSTATIC_KERNEL
 871         help
 872           This builds a kernel image that is capable of running at the
 873           location the kernel is loaded at, without any alignment restrictions.
 874           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 875
 876           One use is for the kexec on panic case where the recovery kernel
 877           must live at a different physical address than the primary
 878           kernel.
 879
 880           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 881           it has been loaded at and the compile time physical addresses
 882           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 883           setting can still be useful to bootwrappers that need to know the
 884           load address of the kernel (eg. u-boot/mkimage).
 885
 886 config RELOCATABLE_PPC32
 887         def_bool y
 888         depends on PPC32 && RELOCATABLE
 889
 890 config PAGE_OFFSET_BOOL
 891         bool "Set custom page offset address"
 892         depends on ADVANCED_OPTIONS
 893         help
 894           This option allows you to set the kernel virtual address at which
 895           the kernel will map low memory.  This can be useful in optimizing
 896           the virtual memory layout of the system.
 897
 898           Say N here unless you know what you are doing.
 899
 900 config PAGE_OFFSET
 901         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 902         default "0xc0000000"
 903
 904 config KERNEL_START_BOOL
 905         bool "Set custom kernel base address"
 906         depends on ADVANCED_OPTIONS
 907         help
 908           This option allows you to set the kernel virtual address at which
 909           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 910           however there are times (like kdump) that one might not want them
 911           to be the same.
 912
 913           Say N here unless you know what you are doing.
 914
 915 config KERNEL_START
 916         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 917         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 918         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 919         default "0xc0000000"
 920
 921 config PHYSICAL_START_BOOL
 922         bool "Set physical address where the kernel is loaded"
 923         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 924         help
 925           This gives the physical address where the kernel is loaded.
 926
 927           Say N here unless you know what you are doing.
 928
 929 config PHYSICAL_START
 930         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 931         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 932         default "0x00000000"
 933
 934 config PHYSICAL_ALIGN
 935         hex
 936         default "0x04000000" if FSL_BOOKE
 937         help
 938           This value puts the alignment restrictions on physical address
 939           where kernel is loaded and run from. Kernel is compiled for an
 940           address which meets above alignment restriction.
 941
 942 config TASK_SIZE_BOOL
 943         bool "Set custom user task size"
 944         depends on ADVANCED_OPTIONS
 945         help
 946           This option allows you to set the amount of virtual address space
 947           allocated to user tasks.  This can be useful in optimizing the
 948           virtual memory layout of the system.
 949
 950           Say N here unless you know what you are doing.
 951
 952 config TASK_SIZE
 953         hex "Size of user task space" if TASK_SIZE_BOOL
 954         default "0x80000000" if PPC_PREP || PPC_8xx
 955         default "0xc0000000"
 956
 957 config CONSISTENT_SIZE_BOOL
 958         bool "Set custom consistent memory pool size"
 959         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 960         help
 961           This option allows you to set the size of the
 962           consistent memory pool.  This pool of virtual memory
 963           is used to make consistent memory allocations.
 964
 965 config CONSISTENT_SIZE
 966         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 967         default "0x00200000" if NOT_COHERENT_CACHE
 968
 969 config PIN_TLB
 970         bool "Pinned Kernel TLBs (860 ONLY)"
 971         depends on ADVANCED_OPTIONS && 8xx
 972 endmenu
 973
 974 if PPC64
 975 config RELOCATABLE
 976         bool "Build a relocatable kernel"
 977         select NONSTATIC_KERNEL
 978         help
 979           This builds a kernel image that is capable of running anywhere
 980           in the RMA (real memory area) at any 16k-aligned base address.
 981           The kernel is linked as a position-independent executable (PIE)
 982           and contains dynamic relocations which are processed early
 983           in the bootup process.
 984
 985           One use is for the kexec on panic case where the recovery kernel
 986           must live at a different physical address than the primary
 987           kernel.
 988
 989 config PAGE_OFFSET
 990         hex
 991         default "0xc000000000000000"
 992 config KERNEL_START
 993         hex
 994         default "0xc000000000000000"
 995 config PHYSICAL_START
 996         hex
 997         default "0x00000000"
 998 endif
 999
1000 source "net/Kconfig"
1001
1002 source "drivers/Kconfig"
1003
1004 source "fs/Kconfig"
1005
1006 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1007
1008 source "lib/Kconfig"
1009
1010 source "arch/powerpc/Kconfig.debug"
1011
1012 source "security/Kconfig"
1013
1014 config KEYS_COMPAT
1015         bool
1016         depends on COMPAT && KEYS
1017         default y
1018
1019 source "crypto/Kconfig"
1020
1021 config PPC_CLOCK
1022         bool
1023         default n
1024         select HAVE_CLK
1025
1026 config PPC_LIB_RHEAP
1027         bool
1028
1029 source "arch/powerpc/kvm/Kconfig"