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_DEBUG_KMEMLEAK
 117         select HAVE_SYSCALL_WRAPPERS if PPC64
 118         select GENERIC_ATOMIC64 if PPC32
 119         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 120         select HAVE_IRQ_WORK
 121         select HAVE_PERF_EVENTS
 122         select HAVE_REGS_AND_STACK_ACCESS_API
 123         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 124         select HAVE_GENERIC_HARDIRQS
 125         select ARCH_WANT_IPC_PARSE_VERSION
 126         select SPARSE_IRQ
 127         select IRQ_PER_CPU
 128         select IRQ_DOMAIN
 129         select GENERIC_IRQ_SHOW
 130         select GENERIC_IRQ_SHOW_LEVEL
 131         select IRQ_FORCED_THREADING
 132         select HAVE_RCU_TABLE_FREE if SMP
 133         select HAVE_SYSCALL_TRACEPOINTS
 134         select HAVE_BPF_JIT if PPC64
 135         select HAVE_ARCH_JUMP_LABEL
 136         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 137         select GENERIC_SMP_IDLE_THREAD
 138         select GENERIC_CMOS_UPDATE
 139         select GENERIC_TIME_VSYSCALL
 140         select GENERIC_CLOCKEVENTS
 141         select GENERIC_STRNCPY_FROM_USER
 142         select GENERIC_STRNLEN_USER
 143
 144 config EARLY_PRINTK
 145         bool
 146         default y
 147
 148 config COMPAT
 149         bool
 150         default y if PPC64
 151         select COMPAT_BINFMT_ELF
 152         select ARCH_WANT_OLD_COMPAT_IPC
 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 source "init/Kconfig"
 275
 276 source "kernel/Kconfig.freezer"
 277
 278 source "arch/powerpc/sysdev/Kconfig"
 279 source "arch/powerpc/platforms/Kconfig"
 280
 281 menu "Kernel options"
 282
 283 config HIGHMEM
 284         bool "High memory support"
 285         depends on PPC32
 286
 287 source kernel/Kconfig.hz
 288 source kernel/Kconfig.preempt
 289 source "fs/Kconfig.binfmt"
 290
 291 config HUGETLB_PAGE_SIZE_VARIABLE
 292         bool
 293         depends on HUGETLB_PAGE
 294         default y
 295
 296 config MATH_EMULATION
 297         bool "Math emulation"
 298         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 299         ---help---
 300           Some PowerPC chips designed for embedded applications do not have
 301           a floating-point unit and therefore do not implement the
 302           floating-point instructions in the PowerPC instruction set.  If you
 303           say Y here, the kernel will include code to emulate a floating-point
 304           unit, which will allow programs that use floating-point
 305           instructions to run.
 306
 307 config 8XX_MINIMAL_FPEMU
 308         bool "Minimal math emulation for 8xx"
 309         depends on 8xx && !MATH_EMULATION
 310         help
 311           Older arch/ppc kernels still emulated a few floating point
 312           instructions such as load and store, even when full math
 313           emulation is disabled.  Say "Y" here if you want to preserve
 314           this behavior.
 315
 316           It is recommended that you build a soft-float userspace instead.
 317
 318 config IOMMU_HELPER
 319         def_bool PPC64
 320
 321 config SWIOTLB
 322         bool "SWIOTLB support"
 323         default n
 324         select IOMMU_HELPER
 325         ---help---
 326           Support for IO bounce buffering for systems without an IOMMU.
 327           This allows us to DMA to the full physical address space on
 328           platforms where the size of a physical address is larger
 329           than the bus address.  Not all platforms support this.
 330
 331 config HOTPLUG_CPU
 332         bool "Support for enabling/disabling CPUs"
 333         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
 334         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 335         ---help---
 336           Say Y here to be able to disable and re-enable individual
 337           CPUs at runtime on SMP machines.
 338
 339           Say N if you are unsure.
 340
 341 config ARCH_CPU_PROBE_RELEASE
 342         def_bool y
 343         depends on HOTPLUG_CPU
 344
 345 config ARCH_ENABLE_MEMORY_HOTPLUG
 346         def_bool y
 347
 348 config ARCH_HAS_WALK_MEMORY
 349         def_bool y
 350
 351 config ARCH_ENABLE_MEMORY_HOTREMOVE
 352         def_bool y
 353
 354 config KEXEC
 355         bool "kexec system call (EXPERIMENTAL)"
 356         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
 357         help
 358           kexec is a system call that implements the ability to shutdown your
 359           current kernel, and to start another kernel.  It is like a reboot
 360           but it is independent of the system firmware.   And like a reboot
 361           you can start any kernel with it, not just Linux.
 362
 363           The name comes from the similarity to the exec system call.
 364
 365           It is an ongoing process to be certain the hardware in a machine
 366           is properly shutdown, so do not be surprised if this code does not
 367           initially work for you.  It may help to enable device hotplugging
 368           support.  As of this writing the exact hardware interface is
 369           strongly in flux, so no good recommendation can be made.
 370
 371 config CRASH_DUMP
 372         bool "Build a kdump crash kernel"
 373         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 374         select RELOCATABLE if PPC64 || 44x
 375         select DYNAMIC_MEMSTART if FSL_BOOKE
 376         help
 377           Build a kernel suitable for use as a kdump capture kernel.
 378           The same kernel binary can be used as production kernel and dump
 379           capture kernel.
 380
 381 config FA_DUMP
 382         bool "Firmware-assisted dump"
 383         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 384         help
 385           A robust mechanism to get reliable kernel crash dump with
 386           assistance from firmware. This approach does not use kexec,
 387           instead firmware assists in booting the kdump kernel
 388           while preserving memory contents. Firmware-assisted dump
 389           is meant to be a kdump replacement offering robustness and
 390           speed not possible without system firmware assistance.
 391
 392           If unsure, say "N"
 393
 394 config IRQ_ALL_CPUS
 395         bool "Distribute interrupts on all CPUs by default"
 396         depends on SMP && !MV64360
 397         help
 398           This option gives the kernel permission to distribute IRQs across
 399           multiple CPUs.  Saying N here will route all IRQs to the first
 400           CPU.  Generally saying Y is safe, although some problems have been
 401           reported with SMP Power Macintoshes with this option enabled.
 402
 403 config NUMA
 404         bool "NUMA support"
 405         depends on PPC64
 406         default y if SMP && PPC_PSERIES
 407
 408 config NODES_SHIFT
 409         int
 410         default "8" if PPC64
 411         default "4"
 412         depends on NEED_MULTIPLE_NODES
 413
 414 config MAX_ACTIVE_REGIONS
 415         int
 416         default "256" if PPC64
 417         default "32"
 418
 419 config ARCH_SELECT_MEMORY_MODEL
 420         def_bool y
 421         depends on PPC64
 422
 423 config ARCH_FLATMEM_ENABLE
 424         def_bool y
 425         depends on (PPC64 && !NUMA) || PPC32
 426
 427 config ARCH_SPARSEMEM_ENABLE
 428         def_bool y
 429         depends on PPC64
 430         select SPARSEMEM_VMEMMAP_ENABLE
 431
 432 config ARCH_SPARSEMEM_DEFAULT
 433         def_bool y
 434         depends on (SMP && PPC_PSERIES) || PPC_PS3
 435
 436 config SYS_SUPPORTS_HUGETLBFS
 437         bool
 438
 439 source "mm/Kconfig"
 440
 441 config ARCH_MEMORY_PROBE
 442         def_bool y
 443         depends on MEMORY_HOTPLUG
 444
 445 # Some NUMA nodes have memory ranges that span
 446 # other nodes.  Even though a pfn is valid and
 447 # between a node's start and end pfns, it may not
 448 # reside on that node.  See memmap_init_zone()
 449 # for details.
 450 config NODES_SPAN_OTHER_NODES
 451         def_bool y
 452         depends on NEED_MULTIPLE_NODES
 453
 454 config PPC_HAS_HASH_64K
 455         bool
 456         depends on PPC64
 457         default n
 458
 459 config STDBINUTILS
 460         bool "Using standard binutils settings"
 461         depends on 44x
 462         default y
 463         help
 464           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 465           Note, that kernel will be able to run only those applications,
 466           which had been compiled using binutils later than 2.17.50.0.3 with
 467           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 468           the older binutils, you can patch them with a trivial patch, which
 469           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 470
 471 choice
 472         prompt "Page size"
 473         default PPC_4K_PAGES
 474         help
 475           Select the kernel logical page size. Increasing the page size
 476           will reduce software overhead at each page boundary, allow
 477           hardware prefetch mechanisms to be more effective, and allow
 478           larger dma transfers increasing IO efficiency and reducing
 479           overhead. However the utilization of memory will increase.
 480           For example, each cached file will using a multiple of the
 481           page size to hold its contents and the difference between the
 482           end of file and the end of page is wasted.
 483
 484           Some dedicated systems, such as software raid serving with
 485           accelerated calculations, have shown significant increases.
 486
 487           If you configure a 64 bit kernel for 64k pages but the
 488           processor does not support them, then the kernel will simulate
 489           them with 4k pages, loading them on demand, but with the
 490           reduced software overhead and larger internal fragmentation.
 491           For the 32 bit kernel, a large page option will not be offered
 492           unless it is supported by the configured processor.
 493
 494           If unsure, choose 4K_PAGES.
 495
 496 config PPC_4K_PAGES
 497         bool "4k page size"
 498
 499 config PPC_16K_PAGES
 500         bool "16k page size" if 44x
 501
 502 config PPC_64K_PAGES
 503         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 504         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 505
 506 config PPC_256K_PAGES
 507         bool "256k page size" if 44x
 508         depends on !STDBINUTILS
 509         help
 510           Make the page size 256k.
 511
 512           As the ELF standard only requires alignment to support page
 513           sizes up to 64k, you will need to compile all of your user
 514           space applications with a non-standard binutils settings
 515           (see the STDBINUTILS description for details).
 516
 517           Say N unless you know what you are doing.
 518
 519 endchoice
 520
 521 config FORCE_MAX_ZONEORDER
 522         int "Maximum zone order"
 523         range 9 64 if PPC64 && PPC_64K_PAGES
 524         default "9" if PPC64 && PPC_64K_PAGES
 525         range 13 64 if PPC64 && !PPC_64K_PAGES
 526         default "13" if PPC64 && !PPC_64K_PAGES
 527         range 9 64 if PPC32 && PPC_16K_PAGES
 528         default "9" if PPC32 && PPC_16K_PAGES
 529         range 7 64 if PPC32 && PPC_64K_PAGES
 530         default "7" if PPC32 && PPC_64K_PAGES
 531         range 5 64 if PPC32 && PPC_256K_PAGES
 532         default "5" if PPC32 && PPC_256K_PAGES
 533         range 11 64
 534         default "11"
 535         help
 536           The kernel memory allocator divides physically contiguous memory
 537           blocks into "zones", where each zone is a power of two number of
 538           pages.  This option selects the largest power of two that the kernel
 539           keeps in the memory allocator.  If you need to allocate very large
 540           blocks of physically contiguous memory, then you may need to
 541           increase this value.
 542
 543           This config option is actually maximum order plus one. For example,
 544           a value of 11 means that the largest free memory block is 2^10 pages.
 545
 546           The page size is not necessarily 4KB.  For example, on 64-bit
 547           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 548           this in mind when choosing a value for this option.
 549
 550 config PPC_SUBPAGE_PROT
 551         bool "Support setting protections for 4k subpages"
 552         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 553         help
 554           This option adds support for a system call to allow user programs
 555           to set access permissions (read/write, readonly, or no access)
 556           on the 4k subpages of each 64k page.
 557
 558 config SCHED_SMT
 559         bool "SMT (Hyperthreading) scheduler support"
 560         depends on PPC64 && SMP
 561         help
 562           SMT scheduler support improves the CPU scheduler's decision making
 563           when dealing with POWER5 cpus at a cost of slightly increased
 564           overhead in some places. If unsure say N here.
 565
 566 config PPC_DENORMALISATION
 567         bool "PowerPC denormalisation exception handling"
 568         depends on PPC_BOOK3S_64
 569         default "n"
 570         ---help---
 571           Add support for handling denormalisation of single precision
 572           values.  Useful for bare metal only.  If unsure say Y here.
 573
 574 config CMDLINE_BOOL
 575         bool "Default bootloader kernel arguments"
 576
 577 config CMDLINE
 578         string "Initial kernel command string"
 579         depends on CMDLINE_BOOL
 580         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 581         help
 582           On some platforms, there is currently no way for the boot loader to
 583           pass arguments to the kernel. For these platforms, you can supply
 584           some command-line options at build time by entering them here.  In
 585           most cases you will need to specify the root device here.
 586
 587 config EXTRA_TARGETS
 588         string "Additional default image types"
 589         help
 590           List additional targets to be built by the bootwrapper here (separated
 591           by spaces).  This is useful for targets that depend of device tree
 592           files in the .dts directory.
 593
 594           Targets in this list will be build as part of the default build
 595           target, or when the user does a 'make zImage' or a
 596           'make zImage.initrd'.
 597
 598           If unsure, leave blank
 599
 600 config ARCH_WANTS_FREEZER_CONTROL
 601         def_bool y
 602         depends on ADB_PMU
 603
 604 source kernel/power/Kconfig
 605
 606 config SECCOMP
 607         bool "Enable seccomp to safely compute untrusted bytecode"
 608         depends on PROC_FS
 609         default y
 610         help
 611           This kernel feature is useful for number crunching applications
 612           that may need to compute untrusted bytecode during their
 613           execution. By using pipes or other transports made available to
 614           the process as file descriptors supporting the read/write
 615           syscalls, it's possible to isolate those applications in
 616           their own address space using seccomp. Once seccomp is
 617           enabled via /proc/<pid>/seccomp, it cannot be disabled
 618           and the task is only allowed to execute a few safe syscalls
 619           defined by each seccomp mode.
 620
 621           If unsure, say Y. Only embedded should say N here.
 622
 623 endmenu
 624
 625 config ISA_DMA_API
 626         bool
 627         default PCI
 628
 629 menu "Bus options"
 630
 631 config ISA
 632         bool "Support for ISA-bus hardware"
 633         depends on PPC_PREP || PPC_CHRP
 634         select PPC_I8259
 635         help
 636           Find out whether you have ISA slots on your motherboard.  ISA is the
 637           name of a bus system, i.e. the way the CPU talks to the other stuff
 638           inside your box.  If you have an Apple machine, say N here; if you
 639           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 640           you have an embedded board, consult your board documentation.
 641
 642 config ZONE_DMA
 643         bool
 644         default y
 645
 646 config NEED_DMA_MAP_STATE
 647         def_bool (PPC64 || NOT_COHERENT_CACHE)
 648
 649 config NEED_SG_DMA_LENGTH
 650         def_bool y
 651
 652 config GENERIC_ISA_DMA
 653         bool
 654         depends on ISA_DMA_API
 655         default y
 656
 657 config PPC_INDIRECT_PCI
 658         bool
 659         depends on PCI
 660         default y if 40x || 44x
 661         default n
 662
 663 config EISA
 664         bool
 665
 666 config SBUS
 667         bool
 668
 669 config FSL_SOC
 670         bool
 671         select HAVE_CAN_FLEXCAN if NET && CAN
 672         select PPC_CLOCK
 673
 674 config FSL_PCI
 675         bool
 676         select PPC_INDIRECT_PCI
 677         select PCI_QUIRKS
 678
 679 config FSL_PMC
 680         bool
 681         default y
 682         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 683         help
 684           Freescale MPC85xx/MPC86xx power management controller support
 685           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 686
 687 config PPC4xx_CPM
 688         bool
 689         default y
 690         depends on SUSPEND && (44x || 40x)
 691         help
 692           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 693           It also enables support for two different idle states (idle-wait
 694           and idle-doze).
 695
 696 config 4xx_SOC
 697         bool
 698
 699 config FSL_LBC
 700         bool "Freescale Local Bus support"
 701         depends on FSL_SOC
 702         help
 703           Enables reporting of errors from the Freescale local bus
 704           controller.  Also contains some common code used by
 705           drivers for specific local bus peripherals.
 706
 707 config FSL_IFC
 708         bool
 709         depends on FSL_SOC
 710
 711 config FSL_GTM
 712         bool
 713         depends on PPC_83xx || QUICC_ENGINE || CPM2
 714         help
 715           Freescale General-purpose Timers support
 716
 717 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 718 config MCA
 719         bool
 720
 721 # Platforms that what PCI turned unconditionally just do select PCI
 722 # in their config node.  Platforms that want to choose at config
 723 # time should select PPC_PCI_CHOICE
 724 config PPC_PCI_CHOICE
 725         bool
 726
 727 config PCI
 728         bool "PCI support" if PPC_PCI_CHOICE
 729         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 730                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 731         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 732         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 733         select ARCH_SUPPORTS_MSI
 734         select GENERIC_PCI_IOMAP
 735         help
 736           Find out whether your system includes a PCI bus. PCI is the name of
 737           a bus system, i.e. the way the CPU talks to the other stuff inside
 738           your box.  If you say Y here, the kernel will include drivers and
 739           infrastructure code to support PCI bus devices.
 740
 741 config PCI_DOMAINS
 742         def_bool PCI
 743
 744 config PCI_SYSCALL
 745         def_bool PCI
 746
 747 config PCI_QSPAN
 748         bool "QSpan PCI"
 749         depends on !4xx && !CPM2 && 8xx
 750         select PPC_I8259
 751         help
 752           Say Y here if you have a system based on a Motorola 8xx-series
 753           embedded processor with a QSPAN PCI interface, otherwise say N.
 754
 755 config PCI_8260
 756         bool
 757         depends on PCI && 8260
 758         select PPC_INDIRECT_PCI
 759         default y
 760
 761 config 8260_PCI9
 762         bool "Enable workaround for MPC826x erratum PCI 9"
 763         depends on PCI_8260 && !8272
 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 (EXPERIMENTAL)"
 852         depends on EXPERIMENTAL && 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 (EXPERIMENTAL)"
 870         depends on EXPERIMENTAL && 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_PREP || 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 config PAGE_OFFSET
 991         hex
 992         default "0xc000000000000000"
 993 config KERNEL_START
 994         hex
 995         default "0xc000000000000000"
 996 config PHYSICAL_START
 997         hex
 998         default "0x00000000"
 999 endif
1000
1001 source "net/Kconfig"
1002
1003 source "drivers/Kconfig"
1004
1005 source "fs/Kconfig"
1006
1007 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1008
1009 source "lib/Kconfig"
1010
1011 source "arch/powerpc/Kconfig.debug"
1012
1013 source "security/Kconfig"
1014
1015 config KEYS_COMPAT
1016         bool
1017         depends on COMPAT && KEYS
1018         default y
1019
1020 source "crypto/Kconfig"
1021
1022 config PPC_CLOCK
1023         bool
1024         default n
1025         select HAVE_CLK
1026
1027 config PPC_LIB_RHEAP
1028         bool
1029
1030 source "arch/powerpc/kvm/Kconfig"