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 SPARSE_IRQ
 125         select IRQ_PER_CPU
 126         select IRQ_DOMAIN
 127         select GENERIC_IRQ_SHOW
 128         select GENERIC_IRQ_SHOW_LEVEL
 129         select IRQ_FORCED_THREADING
 130         select HAVE_RCU_TABLE_FREE if SMP
 131         select HAVE_SYSCALL_TRACEPOINTS
 132         select HAVE_BPF_JIT if PPC64
 133         select HAVE_ARCH_JUMP_LABEL
 134         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 135         select GENERIC_SMP_IDLE_THREAD
 136         select GENERIC_CMOS_UPDATE
 137         select GENERIC_TIME_VSYSCALL
 138         select GENERIC_CLOCKEVENTS
 139         select GENERIC_STRNCPY_FROM_USER
 140         select GENERIC_STRNLEN_USER
 141
 142 config EARLY_PRINTK
 143         bool
 144         default y
 145
 146 config COMPAT
 147         bool
 148         default y if PPC64
 149         select COMPAT_BINFMT_ELF
 150         select ARCH_WANT_OLD_COMPAT_IPC
 151
 152 config SYSVIPC_COMPAT
 153         bool
 154         depends on COMPAT && SYSVIPC
 155         default y
 156
 157 # All PPC32s use generic nvram driver through ppc_md
 158 config GENERIC_NVRAM
 159         bool
 160         default y if PPC32
 161
 162 config SCHED_OMIT_FRAME_POINTER
 163         bool
 164         default y
 165
 166 config ARCH_MAY_HAVE_PC_FDC
 167         bool
 168         default !PPC_PSERIES || PCI
 169
 170 config PPC_OF
 171         def_bool y
 172
 173 config PPC_UDBG_16550
 174         bool
 175         default n
 176
 177 config GENERIC_TBSYNC
 178         bool
 179         default y if PPC32 && SMP
 180         default n
 181
 182 config AUDIT_ARCH
 183         bool
 184         default y
 185
 186 config GENERIC_BUG
 187         bool
 188         default y
 189         depends on BUG
 190
 191 config SYS_SUPPORTS_APM_EMULATION
 192         default y if PMAC_APM_EMU
 193         bool
 194
 195 config EPAPR_BOOT
 196         bool
 197         help
 198           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 199         default n
 200
 201 config DEFAULT_UIMAGE
 202         bool
 203         help
 204           Used to allow a board to specify it wants a uImage built by default
 205         default n
 206
 207 config REDBOOT
 208         bool
 209
 210 config ARCH_HIBERNATION_POSSIBLE
 211         bool
 212         default y
 213
 214 config ARCH_SUSPEND_POSSIBLE
 215         def_bool y
 216         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 217                    (PPC_85xx && !SMP) || PPC_86xx || PPC_PSERIES || 44x || 40x
 218
 219 config PPC_DCR_NATIVE
 220         bool
 221         default n
 222
 223 config PPC_DCR_MMIO
 224         bool
 225         default n
 226
 227 config PPC_DCR
 228         bool
 229         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 230         default y
 231
 232 config PPC_OF_PLATFORM_PCI
 233         bool
 234         depends on PCI
 235         depends on PPC64 # not supported on 32 bits yet
 236         default n
 237
 238 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 239         def_bool y
 240
 241 config PPC_ADV_DEBUG_REGS
 242         bool
 243         depends on 40x || BOOKE
 244         default y
 245
 246 config PPC_ADV_DEBUG_IACS
 247         int
 248         depends on PPC_ADV_DEBUG_REGS
 249         default 4 if 44x
 250         default 2
 251
 252 config PPC_ADV_DEBUG_DACS
 253         int
 254         depends on PPC_ADV_DEBUG_REGS
 255         default 2
 256
 257 config PPC_ADV_DEBUG_DVCS
 258         int
 259         depends on PPC_ADV_DEBUG_REGS
 260         default 2 if 44x
 261         default 0
 262
 263 config PPC_ADV_DEBUG_DAC_RANGE
 264         bool
 265         depends on PPC_ADV_DEBUG_REGS && 44x
 266         default y
 267
 268 source "init/Kconfig"
 269
 270 source "kernel/Kconfig.freezer"
 271
 272 source "arch/powerpc/sysdev/Kconfig"
 273 source "arch/powerpc/platforms/Kconfig"
 274
 275 menu "Kernel options"
 276
 277 config HIGHMEM
 278         bool "High memory support"
 279         depends on PPC32
 280
 281 source kernel/Kconfig.hz
 282 source kernel/Kconfig.preempt
 283 source "fs/Kconfig.binfmt"
 284
 285 config HUGETLB_PAGE_SIZE_VARIABLE
 286         bool
 287         depends on HUGETLB_PAGE
 288         default y
 289
 290 config MATH_EMULATION
 291         bool "Math emulation"
 292         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 293         ---help---
 294           Some PowerPC chips designed for embedded applications do not have
 295           a floating-point unit and therefore do not implement the
 296           floating-point instructions in the PowerPC instruction set.  If you
 297           say Y here, the kernel will include code to emulate a floating-point
 298           unit, which will allow programs that use floating-point
 299           instructions to run.
 300
 301 config 8XX_MINIMAL_FPEMU
 302         bool "Minimal math emulation for 8xx"
 303         depends on 8xx && !MATH_EMULATION
 304         help
 305           Older arch/ppc kernels still emulated a few floating point
 306           instructions such as load and store, even when full math
 307           emulation is disabled.  Say "Y" here if you want to preserve
 308           this behavior.
 309
 310           It is recommended that you build a soft-float userspace instead.
 311
 312 config IOMMU_HELPER
 313         def_bool PPC64
 314
 315 config SWIOTLB
 316         bool "SWIOTLB support"
 317         default n
 318         select IOMMU_HELPER
 319         ---help---
 320           Support for IO bounce buffering for systems without an IOMMU.
 321           This allows us to DMA to the full physical address space on
 322           platforms where the size of a physical address is larger
 323           than the bus address.  Not all platforms support this.
 324
 325 config HOTPLUG_CPU
 326         bool "Support for enabling/disabling CPUs"
 327         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV)
 328         ---help---
 329           Say Y here to be able to disable and re-enable individual
 330           CPUs at runtime on SMP machines.
 331
 332           Say N if you are unsure.
 333
 334 config ARCH_CPU_PROBE_RELEASE
 335         def_bool y
 336         depends on HOTPLUG_CPU
 337
 338 config ARCH_ENABLE_MEMORY_HOTPLUG
 339         def_bool y
 340
 341 config ARCH_HAS_WALK_MEMORY
 342         def_bool y
 343
 344 config ARCH_ENABLE_MEMORY_HOTREMOVE
 345         def_bool y
 346
 347 config KEXEC
 348         bool "kexec system call (EXPERIMENTAL)"
 349         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
 350         help
 351           kexec is a system call that implements the ability to shutdown your
 352           current kernel, and to start another kernel.  It is like a reboot
 353           but it is independent of the system firmware.   And like a reboot
 354           you can start any kernel with it, not just Linux.
 355
 356           The name comes from the similarity to the exec system call.
 357
 358           It is an ongoing process to be certain the hardware in a machine
 359           is properly shutdown, so do not be surprised if this code does not
 360           initially work for you.  It may help to enable device hotplugging
 361           support.  As of this writing the exact hardware interface is
 362           strongly in flux, so no good recommendation can be made.
 363
 364 config CRASH_DUMP
 365         bool "Build a kdump crash kernel"
 366         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 367         select RELOCATABLE if PPC64 || 44x
 368         select DYNAMIC_MEMSTART if FSL_BOOKE
 369         help
 370           Build a kernel suitable for use as a kdump capture kernel.
 371           The same kernel binary can be used as production kernel and dump
 372           capture kernel.
 373
 374 config FA_DUMP
 375         bool "Firmware-assisted dump"
 376         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 377         help
 378           A robust mechanism to get reliable kernel crash dump with
 379           assistance from firmware. This approach does not use kexec,
 380           instead firmware assists in booting the kdump kernel
 381           while preserving memory contents. Firmware-assisted dump
 382           is meant to be a kdump replacement offering robustness and
 383           speed not possible without system firmware assistance.
 384
 385           If unsure, say "N"
 386
 387 config IRQ_ALL_CPUS
 388         bool "Distribute interrupts on all CPUs by default"
 389         depends on SMP && !MV64360
 390         help
 391           This option gives the kernel permission to distribute IRQs across
 392           multiple CPUs.  Saying N here will route all IRQs to the first
 393           CPU.  Generally saying Y is safe, although some problems have been
 394           reported with SMP Power Macintoshes with this option enabled.
 395
 396 config NUMA
 397         bool "NUMA support"
 398         depends on PPC64
 399         default y if SMP && PPC_PSERIES
 400
 401 config NODES_SHIFT
 402         int
 403         default "8" if PPC64
 404         default "4"
 405         depends on NEED_MULTIPLE_NODES
 406
 407 config MAX_ACTIVE_REGIONS
 408         int
 409         default "256" if PPC64
 410         default "32"
 411
 412 config ARCH_SELECT_MEMORY_MODEL
 413         def_bool y
 414         depends on PPC64
 415
 416 config ARCH_FLATMEM_ENABLE
 417         def_bool y
 418         depends on (PPC64 && !NUMA) || PPC32
 419
 420 config ARCH_SPARSEMEM_ENABLE
 421         def_bool y
 422         depends on PPC64
 423         select SPARSEMEM_VMEMMAP_ENABLE
 424
 425 config ARCH_SPARSEMEM_DEFAULT
 426         def_bool y
 427         depends on (SMP && PPC_PSERIES) || PPC_PS3
 428
 429 config SYS_SUPPORTS_HUGETLBFS
 430         bool
 431
 432 source "mm/Kconfig"
 433
 434 config ARCH_MEMORY_PROBE
 435         def_bool y
 436         depends on MEMORY_HOTPLUG
 437
 438 # Some NUMA nodes have memory ranges that span
 439 # other nodes.  Even though a pfn is valid and
 440 # between a node's start and end pfns, it may not
 441 # reside on that node.  See memmap_init_zone()
 442 # for details.
 443 config NODES_SPAN_OTHER_NODES
 444         def_bool y
 445         depends on NEED_MULTIPLE_NODES
 446
 447 config PPC_HAS_HASH_64K
 448         bool
 449         depends on PPC64
 450         default n
 451
 452 config STDBINUTILS
 453         bool "Using standard binutils settings"
 454         depends on 44x
 455         default y
 456         help
 457           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 458           Note, that kernel will be able to run only those applications,
 459           which had been compiled using binutils later than 2.17.50.0.3 with
 460           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 461           the older binutils, you can patch them with a trivial patch, which
 462           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 463
 464 choice
 465         prompt "Page size"
 466         default PPC_4K_PAGES
 467         help
 468           Select the kernel logical page size. Increasing the page size
 469           will reduce software overhead at each page boundary, allow
 470           hardware prefetch mechanisms to be more effective, and allow
 471           larger dma transfers increasing IO efficiency and reducing
 472           overhead. However the utilization of memory will increase.
 473           For example, each cached file will using a multiple of the
 474           page size to hold its contents and the difference between the
 475           end of file and the end of page is wasted.
 476
 477           Some dedicated systems, such as software raid serving with
 478           accelerated calculations, have shown significant increases.
 479
 480           If you configure a 64 bit kernel for 64k pages but the
 481           processor does not support them, then the kernel will simulate
 482           them with 4k pages, loading them on demand, but with the
 483           reduced software overhead and larger internal fragmentation.
 484           For the 32 bit kernel, a large page option will not be offered
 485           unless it is supported by the configured processor.
 486
 487           If unsure, choose 4K_PAGES.
 488
 489 config PPC_4K_PAGES
 490         bool "4k page size"
 491
 492 config PPC_16K_PAGES
 493         bool "16k page size" if 44x
 494
 495 config PPC_64K_PAGES
 496         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 497         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 498
 499 config PPC_256K_PAGES
 500         bool "256k page size" if 44x
 501         depends on !STDBINUTILS
 502         help
 503           Make the page size 256k.
 504
 505           As the ELF standard only requires alignment to support page
 506           sizes up to 64k, you will need to compile all of your user
 507           space applications with a non-standard binutils settings
 508           (see the STDBINUTILS description for details).
 509
 510           Say N unless you know what you are doing.
 511
 512 endchoice
 513
 514 config FORCE_MAX_ZONEORDER
 515         int "Maximum zone order"
 516         range 9 64 if PPC64 && PPC_64K_PAGES
 517         default "9" if PPC64 && PPC_64K_PAGES
 518         range 13 64 if PPC64 && !PPC_64K_PAGES
 519         default "13" if PPC64 && !PPC_64K_PAGES
 520         range 9 64 if PPC32 && PPC_16K_PAGES
 521         default "9" if PPC32 && PPC_16K_PAGES
 522         range 7 64 if PPC32 && PPC_64K_PAGES
 523         default "7" if PPC32 && PPC_64K_PAGES
 524         range 5 64 if PPC32 && PPC_256K_PAGES
 525         default "5" if PPC32 && PPC_256K_PAGES
 526         range 11 64
 527         default "11"
 528         help
 529           The kernel memory allocator divides physically contiguous memory
 530           blocks into "zones", where each zone is a power of two number of
 531           pages.  This option selects the largest power of two that the kernel
 532           keeps in the memory allocator.  If you need to allocate very large
 533           blocks of physically contiguous memory, then you may need to
 534           increase this value.
 535
 536           This config option is actually maximum order plus one. For example,
 537           a value of 11 means that the largest free memory block is 2^10 pages.
 538
 539           The page size is not necessarily 4KB.  For example, on 64-bit
 540           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 541           this in mind when choosing a value for this option.
 542
 543 config PPC_SUBPAGE_PROT
 544         bool "Support setting protections for 4k subpages"
 545         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 546         help
 547           This option adds support for a system call to allow user programs
 548           to set access permissions (read/write, readonly, or no access)
 549           on the 4k subpages of each 64k page.
 550
 551 config SCHED_SMT
 552         bool "SMT (Hyperthreading) scheduler support"
 553         depends on PPC64 && SMP
 554         help
 555           SMT scheduler support improves the CPU scheduler's decision making
 556           when dealing with POWER5 cpus at a cost of slightly increased
 557           overhead in some places. If unsure say N here.
 558
 559 config CMDLINE_BOOL
 560         bool "Default bootloader kernel arguments"
 561
 562 config CMDLINE
 563         string "Initial kernel command string"
 564         depends on CMDLINE_BOOL
 565         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 566         help
 567           On some platforms, there is currently no way for the boot loader to
 568           pass arguments to the kernel. For these platforms, you can supply
 569           some command-line options at build time by entering them here.  In
 570           most cases you will need to specify the root device here.
 571
 572 config EXTRA_TARGETS
 573         string "Additional default image types"
 574         help
 575           List additional targets to be built by the bootwrapper here (separated
 576           by spaces).  This is useful for targets that depend of device tree
 577           files in the .dts directory.
 578
 579           Targets in this list will be build as part of the default build
 580           target, or when the user does a 'make zImage' or a
 581           'make zImage.initrd'.
 582
 583           If unsure, leave blank
 584
 585 config ARCH_WANTS_FREEZER_CONTROL
 586         def_bool y
 587         depends on ADB_PMU
 588
 589 source kernel/power/Kconfig
 590
 591 config SECCOMP
 592         bool "Enable seccomp to safely compute untrusted bytecode"
 593         depends on PROC_FS
 594         default y
 595         help
 596           This kernel feature is useful for number crunching applications
 597           that may need to compute untrusted bytecode during their
 598           execution. By using pipes or other transports made available to
 599           the process as file descriptors supporting the read/write
 600           syscalls, it's possible to isolate those applications in
 601           their own address space using seccomp. Once seccomp is
 602           enabled via /proc/<pid>/seccomp, it cannot be disabled
 603           and the task is only allowed to execute a few safe syscalls
 604           defined by each seccomp mode.
 605
 606           If unsure, say Y. Only embedded should say N here.
 607
 608 endmenu
 609
 610 config ISA_DMA_API
 611         bool
 612         default PCI
 613
 614 menu "Bus options"
 615
 616 config ISA
 617         bool "Support for ISA-bus hardware"
 618         depends on PPC_PREP || PPC_CHRP
 619         select PPC_I8259
 620         help
 621           Find out whether you have ISA slots on your motherboard.  ISA is the
 622           name of a bus system, i.e. the way the CPU talks to the other stuff
 623           inside your box.  If you have an Apple machine, say N here; if you
 624           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 625           you have an embedded board, consult your board documentation.
 626
 627 config ZONE_DMA
 628         bool
 629         default y
 630
 631 config NEED_DMA_MAP_STATE
 632         def_bool (PPC64 || NOT_COHERENT_CACHE)
 633
 634 config NEED_SG_DMA_LENGTH
 635         def_bool y
 636
 637 config GENERIC_ISA_DMA
 638         bool
 639         depends on ISA_DMA_API
 640         default y
 641
 642 config PPC_INDIRECT_PCI
 643         bool
 644         depends on PCI
 645         default y if 40x || 44x
 646         default n
 647
 648 config EISA
 649         bool
 650
 651 config SBUS
 652         bool
 653
 654 config FSL_SOC
 655         bool
 656         select HAVE_CAN_FLEXCAN if NET && CAN
 657         select PPC_CLOCK
 658
 659 config FSL_PCI
 660         bool
 661         select PPC_INDIRECT_PCI
 662         select PCI_QUIRKS
 663
 664 config FSL_PMC
 665         bool
 666         default y
 667         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 668         help
 669           Freescale MPC85xx/MPC86xx power management controller support
 670           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 671
 672 config PPC4xx_CPM
 673         bool
 674         default y
 675         depends on SUSPEND && (44x || 40x)
 676         help
 677           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 678           It also enables support for two different idle states (idle-wait
 679           and idle-doze).
 680
 681 config 4xx_SOC
 682         bool
 683
 684 config FSL_LBC
 685         bool "Freescale Local Bus support"
 686         depends on FSL_SOC
 687         help
 688           Enables reporting of errors from the Freescale local bus
 689           controller.  Also contains some common code used by
 690           drivers for specific local bus peripherals.
 691
 692 config FSL_IFC
 693         bool
 694         depends on FSL_SOC
 695
 696 config FSL_GTM
 697         bool
 698         depends on PPC_83xx || QUICC_ENGINE || CPM2
 699         help
 700           Freescale General-purpose Timers support
 701
 702 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 703 config MCA
 704         bool
 705
 706 # Platforms that what PCI turned unconditionally just do select PCI
 707 # in their config node.  Platforms that want to choose at config
 708 # time should select PPC_PCI_CHOICE
 709 config PPC_PCI_CHOICE
 710         bool
 711
 712 config PCI
 713         bool "PCI support" if PPC_PCI_CHOICE
 714         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 715                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 716         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 717         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 718         select ARCH_SUPPORTS_MSI
 719         select GENERIC_PCI_IOMAP
 720         help
 721           Find out whether your system includes a PCI bus. PCI is the name of
 722           a bus system, i.e. the way the CPU talks to the other stuff inside
 723           your box.  If you say Y here, the kernel will include drivers and
 724           infrastructure code to support PCI bus devices.
 725
 726 config PCI_DOMAINS
 727         def_bool PCI
 728
 729 config PCI_SYSCALL
 730         def_bool PCI
 731
 732 config PCI_QSPAN
 733         bool "QSpan PCI"
 734         depends on !4xx && !CPM2 && 8xx
 735         select PPC_I8259
 736         help
 737           Say Y here if you have a system based on a Motorola 8xx-series
 738           embedded processor with a QSPAN PCI interface, otherwise say N.
 739
 740 config PCI_8260
 741         bool
 742         depends on PCI && 8260
 743         select PPC_INDIRECT_PCI
 744         default y
 745
 746 config 8260_PCI9
 747         bool "Enable workaround for MPC826x erratum PCI 9"
 748         depends on PCI_8260 && !8272
 749         default y
 750
 751 source "drivers/pci/pcie/Kconfig"
 752
 753 source "drivers/pci/Kconfig"
 754
 755 source "drivers/pcmcia/Kconfig"
 756
 757 source "drivers/pci/hotplug/Kconfig"
 758
 759 config HAS_RAPIDIO
 760         bool
 761         default n
 762
 763 config RAPIDIO
 764         bool "RapidIO support"
 765         depends on HAS_RAPIDIO || PCI
 766         help
 767           If you say Y here, the kernel will include drivers and
 768           infrastructure code to support RapidIO interconnect devices.
 769
 770 config FSL_RIO
 771         bool "Freescale Embedded SRIO Controller support"
 772         depends on RAPIDIO && HAS_RAPIDIO
 773         default "n"
 774         ---help---
 775           Include support for RapidIO controller on Freescale embedded
 776           processors (MPC8548, MPC8641, etc).
 777
 778 source "drivers/rapidio/Kconfig"
 779
 780 endmenu
 781
 782 config NONSTATIC_KERNEL
 783         bool
 784         default n
 785
 786 menu "Advanced setup"
 787         depends on PPC32
 788
 789 config ADVANCED_OPTIONS
 790         bool "Prompt for advanced kernel configuration options"
 791         help
 792           This option will enable prompting for a variety of advanced kernel
 793           configuration options.  These options can cause the kernel to not
 794           work if they are set incorrectly, but can be used to optimize certain
 795           aspects of kernel memory management.
 796
 797           Unless you know what you are doing, say N here.
 798
 799 comment "Default settings for advanced configuration options are used"
 800         depends on !ADVANCED_OPTIONS
 801
 802 config LOWMEM_SIZE_BOOL
 803         bool "Set maximum low memory"
 804         depends on ADVANCED_OPTIONS
 805         help
 806           This option allows you to set the maximum amount of memory which
 807           will be used as "low memory", that is, memory which the kernel can
 808           access directly, without having to set up a kernel virtual mapping.
 809           This can be useful in optimizing the layout of kernel virtual
 810           memory.
 811
 812           Say N here unless you know what you are doing.
 813
 814 config LOWMEM_SIZE
 815         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 816         default "0x30000000"
 817
 818 config LOWMEM_CAM_NUM_BOOL
 819         bool "Set number of CAMs to use to map low memory"
 820         depends on ADVANCED_OPTIONS && FSL_BOOKE
 821         help
 822           This option allows you to set the maximum number of CAM slots that
 823           will be used to map low memory.  There are a limited number of slots
 824           available and even more limited number that will fit in the L1 MMU.
 825           However, using more entries will allow mapping more low memory.  This
 826           can be useful in optimizing the layout of kernel virtual memory.
 827
 828           Say N here unless you know what you are doing.
 829
 830 config LOWMEM_CAM_NUM
 831         depends on FSL_BOOKE
 832         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 833         default 3
 834
 835 config DYNAMIC_MEMSTART
 836         bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 837         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 838         select NONSTATIC_KERNEL
 839         help
 840           This option enables the kernel to be loaded at any page aligned
 841           physical address. The kernel creates a mapping from KERNELBASE to
 842           the address where the kernel is loaded. The page size here implies
 843           the TLB page size of the mapping for kernel on the particular platform.
 844           Please refer to the init code for finding the TLB page size.
 845
 846           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 847           kernel image, where the only restriction is the page aligned kernel
 848           load address. When this option is enabled, the compile time physical
 849           address CONFIG_PHYSICAL_START is ignored.
 850
 851           This option is overridden by CONFIG_RELOCATABLE
 852
 853 config RELOCATABLE
 854         bool "Build a relocatable kernel (EXPERIMENTAL)"
 855         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
 856         select NONSTATIC_KERNEL
 857         help
 858           This builds a kernel image that is capable of running at the
 859           location the kernel is loaded at, without any alignment restrictions.
 860           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 861
 862           One use is for the kexec on panic case where the recovery kernel
 863           must live at a different physical address than the primary
 864           kernel.
 865
 866           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 867           it has been loaded at and the compile time physical addresses
 868           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 869           setting can still be useful to bootwrappers that need to know the
 870           load address of the kernel (eg. u-boot/mkimage).
 871
 872 config RELOCATABLE_PPC32
 873         def_bool y
 874         depends on PPC32 && RELOCATABLE
 875
 876 config PAGE_OFFSET_BOOL
 877         bool "Set custom page offset address"
 878         depends on ADVANCED_OPTIONS
 879         help
 880           This option allows you to set the kernel virtual address at which
 881           the kernel will map low memory.  This can be useful in optimizing
 882           the virtual memory layout of the system.
 883
 884           Say N here unless you know what you are doing.
 885
 886 config PAGE_OFFSET
 887         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 888         default "0xc0000000"
 889
 890 config KERNEL_START_BOOL
 891         bool "Set custom kernel base 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 be loaded.  Normally this should match PAGE_OFFSET
 896           however there are times (like kdump) that one might not want them
 897           to be the same.
 898
 899           Say N here unless you know what you are doing.
 900
 901 config KERNEL_START
 902         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 903         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 904         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 905         default "0xc0000000"
 906
 907 config PHYSICAL_START_BOOL
 908         bool "Set physical address where the kernel is loaded"
 909         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 910         help
 911           This gives the physical address where the kernel is loaded.
 912
 913           Say N here unless you know what you are doing.
 914
 915 config PHYSICAL_START
 916         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 917         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 918         default "0x00000000"
 919
 920 config PHYSICAL_ALIGN
 921         hex
 922         default "0x04000000" if FSL_BOOKE
 923         help
 924           This value puts the alignment restrictions on physical address
 925           where kernel is loaded and run from. Kernel is compiled for an
 926           address which meets above alignment restriction.
 927
 928 config TASK_SIZE_BOOL
 929         bool "Set custom user task size"
 930         depends on ADVANCED_OPTIONS
 931         help
 932           This option allows you to set the amount of virtual address space
 933           allocated to user tasks.  This can be useful in optimizing the
 934           virtual memory layout of the system.
 935
 936           Say N here unless you know what you are doing.
 937
 938 config TASK_SIZE
 939         hex "Size of user task space" if TASK_SIZE_BOOL
 940         default "0x80000000" if PPC_PREP || PPC_8xx
 941         default "0xc0000000"
 942
 943 config CONSISTENT_SIZE_BOOL
 944         bool "Set custom consistent memory pool size"
 945         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 946         help
 947           This option allows you to set the size of the
 948           consistent memory pool.  This pool of virtual memory
 949           is used to make consistent memory allocations.
 950
 951 config CONSISTENT_SIZE
 952         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 953         default "0x00200000" if NOT_COHERENT_CACHE
 954
 955 config PIN_TLB
 956         bool "Pinned Kernel TLBs (860 ONLY)"
 957         depends on ADVANCED_OPTIONS && 8xx
 958 endmenu
 959
 960 if PPC64
 961 config RELOCATABLE
 962         bool "Build a relocatable kernel"
 963         select NONSTATIC_KERNEL
 964         help
 965           This builds a kernel image that is capable of running anywhere
 966           in the RMA (real memory area) at any 16k-aligned base address.
 967           The kernel is linked as a position-independent executable (PIE)
 968           and contains dynamic relocations which are processed early
 969           in the bootup process.
 970
 971           One use is for the kexec on panic case where the recovery kernel
 972           must live at a different physical address than the primary
 973           kernel.
 974
 975 config PAGE_OFFSET
 976         hex
 977         default "0xc000000000000000"
 978 config KERNEL_START
 979         hex
 980         default "0xc000000000000000"
 981 config PHYSICAL_START
 982         hex
 983         default "0x00000000"
 984 endif
 985
 986 source "net/Kconfig"
 987
 988 source "drivers/Kconfig"
 989
 990 source "fs/Kconfig"
 991
 992 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 993
 994 source "lib/Kconfig"
 995
 996 source "arch/powerpc/Kconfig.debug"
 997
 998 source "security/Kconfig"
 999
1000 config KEYS_COMPAT
1001         bool
1002         depends on COMPAT && KEYS
1003         default y
1004
1005 source "crypto/Kconfig"
1006
1007 config PPC_CLOCK
1008         bool
1009         default n
1010         select HAVE_CLK
1011
1012 config PPC_LIB_RHEAP
1013         bool
1014
1015 source "arch/powerpc/kvm/Kconfig"