arch/powerpc/Kconfig

   1 # For a description of the syntax of this configuration file,
   2 # see Documentation/kbuild/kconfig-language.txt.
   3 #
   4
   5 mainmenu "Linux/PowerPC Kernel Configuration"
   6
   7 source "arch/powerpc/platforms/Kconfig.cputype"
   8
   9 config PPC32
  10         bool
  11         default y if !PPC64
  12
  13 config 64BIT
  14         bool
  15         default y if PPC64
  16
  17 config WORD_SIZE
  18         int
  19         default 64 if PPC64
  20         default 32 if !PPC64
  21
  22 config ARCH_PHYS_ADDR_T_64BIT
  23        def_bool PPC64 || PHYS_64BIT
  24
  25 config MMU
  26         bool
  27         default y
  28
  29 config GENERIC_CMOS_UPDATE
  30         def_bool y
  31
  32 config GENERIC_TIME_VSYSCALL
  33         def_bool y
  34
  35 config GENERIC_CLOCKEVENTS
  36         def_bool y
  37
  38 config GENERIC_HARDIRQS
  39         bool
  40         default y
  41
  42 config GENERIC_HARDIRQS_NO__DO_IRQ
  43         bool
  44         default y
  45
  46 config HAVE_SETUP_PER_CPU_AREA
  47         def_bool PPC64
  48
  49 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  50         def_bool PPC64
  51
  52 config IRQ_PER_CPU
  53         bool
  54         default y
  55
  56 config NR_IRQS
  57         int "Number of virtual interrupt numbers"
  58         range 32 32768
  59         default "512"
  60         help
  61           This defines the number of virtual interrupt numbers the kernel
  62           can manage. Virtual interrupt numbers are what you see in
  63           /proc/interrupts. If you configure your system to have too few,
  64           drivers will fail to load or worse - handle with care.
  65
  66 config STACKTRACE_SUPPORT
  67         bool
  68         default y
  69
  70 config HAVE_LATENCYTOP_SUPPORT
  71         def_bool y
  72
  73 config TRACE_IRQFLAGS_SUPPORT
  74         bool
  75         default y
  76
  77 config LOCKDEP_SUPPORT
  78         bool
  79         default y
  80
  81 config RWSEM_GENERIC_SPINLOCK
  82         bool
  83
  84 config RWSEM_XCHGADD_ALGORITHM
  85         bool
  86         default y
  87
  88 config GENERIC_LOCKBREAK
  89         bool
  90         default y
  91         depends on SMP && PREEMPT
  92
  93 config ARCH_HAS_ILOG2_U32
  94         bool
  95         default y
  96
  97 config ARCH_HAS_ILOG2_U64
  98         bool
  99         default y if 64BIT
 100
 101 config GENERIC_HWEIGHT
 102         bool
 103         default y
 104
 105 config GENERIC_FIND_NEXT_BIT
 106         bool
 107         default y
 108
 109 config GENERIC_GPIO
 110         bool
 111         help
 112           Generic GPIO API support
 113
 114 config ARCH_NO_VIRT_TO_BUS
 115         def_bool PPC64
 116
 117 config PPC
 118         bool
 119         default y
 120         select OF
 121         select OF_FLATTREE
 122         select HAVE_FTRACE_MCOUNT_RECORD
 123         select HAVE_DYNAMIC_FTRACE
 124         select HAVE_FUNCTION_TRACER
 125         select HAVE_FUNCTION_GRAPH_TRACER
 126         select ARCH_WANT_OPTIONAL_GPIOLIB
 127         select HAVE_IDE
 128         select HAVE_IOREMAP_PROT
 129         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 130         select HAVE_KPROBES
 131         select HAVE_ARCH_KGDB
 132         select HAVE_KRETPROBES
 133         select HAVE_ARCH_TRACEHOOK
 134         select HAVE_MEMBLOCK
 135         select HAVE_DMA_ATTRS
 136         select HAVE_DMA_API_DEBUG
 137         select USE_GENERIC_SMP_HELPERS if SMP
 138         select HAVE_OPROFILE
 139         select HAVE_SYSCALL_WRAPPERS if PPC64
 140         select GENERIC_ATOMIC64 if PPC32
 141         select HAVE_PERF_EVENTS
 142         select HAVE_REGS_AND_STACK_ACCESS_API
 143         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 144
 145 config EARLY_PRINTK
 146         bool
 147         default y
 148
 149 config COMPAT
 150         bool
 151         default y if PPC64
 152         select COMPAT_BINFMT_ELF
 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 DEFAULT_UIMAGE
 198         bool
 199         help
 200           Used to allow a board to specify it wants a uImage built by default
 201         default n
 202
 203 config REDBOOT
 204         bool
 205
 206 config ARCH_HIBERNATION_POSSIBLE
 207         bool
 208         default y
 209
 210 config ARCH_SUSPEND_POSSIBLE
 211         def_bool y
 212         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 213                    PPC_85xx || PPC_86xx || PPC_PSERIES
 214
 215 config PPC_DCR_NATIVE
 216         bool
 217         default n
 218
 219 config PPC_DCR_MMIO
 220         bool
 221         default n
 222
 223 config PPC_DCR
 224         bool
 225         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 226         default y
 227
 228 config PPC_OF_PLATFORM_PCI
 229         bool
 230         depends on PCI
 231         depends on PPC64 # not supported on 32 bits yet
 232         default n
 233
 234 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 235         def_bool y
 236
 237 config PPC_ADV_DEBUG_REGS
 238         bool
 239         depends on 40x || BOOKE
 240         default y
 241
 242 config PPC_ADV_DEBUG_IACS
 243         int
 244         depends on PPC_ADV_DEBUG_REGS
 245         default 4 if 44x
 246         default 2
 247
 248 config PPC_ADV_DEBUG_DACS
 249         int
 250         depends on PPC_ADV_DEBUG_REGS
 251         default 2
 252
 253 config PPC_ADV_DEBUG_DVCS
 254         int
 255         depends on PPC_ADV_DEBUG_REGS
 256         default 2 if 44x
 257         default 0
 258
 259 config PPC_ADV_DEBUG_DAC_RANGE
 260         bool
 261         depends on PPC_ADV_DEBUG_REGS && 44x
 262         default y
 263
 264 source "init/Kconfig"
 265
 266 source "kernel/Kconfig.freezer"
 267
 268 source "arch/powerpc/sysdev/Kconfig"
 269 source "arch/powerpc/platforms/Kconfig"
 270
 271 menu "Kernel options"
 272
 273 config HIGHMEM
 274         bool "High memory support"
 275         depends on PPC32
 276
 277 source kernel/time/Kconfig
 278 source kernel/Kconfig.hz
 279 source kernel/Kconfig.preempt
 280 source "fs/Kconfig.binfmt"
 281
 282 config HUGETLB_PAGE_SIZE_VARIABLE
 283         bool
 284         depends on HUGETLB_PAGE
 285         default y
 286
 287 config MATH_EMULATION
 288         bool "Math emulation"
 289         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 290         ---help---
 291           Some PowerPC chips designed for embedded applications do not have
 292           a floating-point unit and therefore do not implement the
 293           floating-point instructions in the PowerPC instruction set.  If you
 294           say Y here, the kernel will include code to emulate a floating-point
 295           unit, which will allow programs that use floating-point
 296           instructions to run.
 297
 298 config 8XX_MINIMAL_FPEMU
 299         bool "Minimal math emulation for 8xx"
 300         depends on 8xx && !MATH_EMULATION
 301         help
 302           Older arch/ppc kernels still emulated a few floating point
 303           instructions such as load and store, even when full math
 304           emulation is disabled.  Say "Y" here if you want to preserve
 305           this behavior.
 306
 307           It is recommended that you build a soft-float userspace instead.
 308
 309 config IOMMU_HELPER
 310         def_bool PPC64
 311
 312 config SWIOTLB
 313         bool "SWIOTLB support"
 314         default n
 315         select IOMMU_HELPER
 316         ---help---
 317           Support for IO bounce buffering for systems without an IOMMU.
 318           This allows us to DMA to the full physical address space on
 319           platforms where the size of a physical address is larger
 320           than the bus address.  Not all platforms support this.
 321
 322 config HOTPLUG_CPU
 323         bool "Support for enabling/disabling CPUs"
 324         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || PPC_PMAC)
 325         ---help---
 326           Say Y here to be able to disable and re-enable individual
 327           CPUs at runtime on SMP machines.
 328
 329           Say N if you are unsure.
 330
 331 config ARCH_CPU_PROBE_RELEASE
 332         def_bool y
 333         depends on HOTPLUG_CPU
 334
 335 config ARCH_ENABLE_MEMORY_HOTPLUG
 336         def_bool y
 337
 338 config ARCH_HAS_WALK_MEMORY
 339         def_bool y
 340
 341 config ARCH_ENABLE_MEMORY_HOTREMOVE
 342         def_bool y
 343
 344 config KEXEC
 345         bool "kexec system call (EXPERIMENTAL)"
 346         depends on (PPC_BOOK3S || FSL_BOOKE) && EXPERIMENTAL
 347         help
 348           kexec is a system call that implements the ability to shutdown your
 349           current kernel, and to start another kernel.  It is like a reboot
 350           but it is independent of the system firmware.   And like a reboot
 351           you can start any kernel with it, not just Linux.
 352
 353           The name comes from the similarity to the exec system call.
 354
 355           It is an ongoing process to be certain the hardware in a machine
 356           is properly shutdown, so do not be surprised if this code does not
 357           initially work for you.  It may help to enable device hotplugging
 358           support.  As of this writing the exact hardware interface is
 359           strongly in flux, so no good recommendation can be made.
 360
 361 config CRASH_DUMP
 362         bool "Build a kdump crash kernel"
 363         depends on PPC64 || 6xx || FSL_BOOKE
 364         select RELOCATABLE if PPC64 || FSL_BOOKE
 365         help
 366           Build a kernel suitable for use as a kdump capture kernel.
 367           The same kernel binary can be used as production kernel and dump
 368           capture kernel.
 369
 370 config PHYP_DUMP
 371         bool "Hypervisor-assisted dump (EXPERIMENTAL)"
 372         depends on PPC_PSERIES && EXPERIMENTAL
 373         help
 374           Hypervisor-assisted dump is meant to be a kdump replacement
 375           offering robustness and speed not possible without system
 376           hypervisor assistance.
 377
 378           If unsure, say "N"
 379
 380 config PPCBUG_NVRAM
 381         bool "Enable reading PPCBUG NVRAM during boot" if PPLUS || LOPEC
 382         default y if PPC_PREP
 383
 384 config IRQ_ALL_CPUS
 385         bool "Distribute interrupts on all CPUs by default"
 386         depends on SMP && !MV64360
 387         help
 388           This option gives the kernel permission to distribute IRQs across
 389           multiple CPUs.  Saying N here will route all IRQs to the first
 390           CPU.  Generally saying Y is safe, although some problems have been
 391           reported with SMP Power Macintoshes with this option enabled.
 392
 393 config SPARSE_IRQ
 394         bool "Support sparse irq numbering"
 395         default n
 396         help
 397           This enables support for sparse irqs. This is useful for distro
 398           kernels that want to define a high CONFIG_NR_CPUS value but still
 399           want to have low kernel memory footprint on smaller machines.
 400
 401           ( Sparse IRQs can also be beneficial on NUMA boxes, as they spread
 402             out the irq_desc[] array in a more NUMA-friendly way. )
 403
 404           If you don't know what to do here, say N.
 405
 406 config NUMA
 407         bool "NUMA support"
 408         depends on PPC64
 409         default y if SMP && PPC_PSERIES
 410
 411 config NODES_SHIFT
 412         int
 413         default "8" if PPC64
 414         default "4"
 415         depends on NEED_MULTIPLE_NODES
 416
 417 config MAX_ACTIVE_REGIONS
 418         int
 419         default "256" if PPC64
 420         default "32"
 421
 422 config ARCH_SELECT_MEMORY_MODEL
 423         def_bool y
 424         depends on PPC64
 425
 426 config ARCH_FLATMEM_ENABLE
 427         def_bool y
 428         depends on (PPC64 && !NUMA) || PPC32
 429
 430 config ARCH_SPARSEMEM_ENABLE
 431         def_bool y
 432         depends on PPC64
 433         select SPARSEMEM_VMEMMAP_ENABLE
 434
 435 config ARCH_SPARSEMEM_DEFAULT
 436         def_bool y
 437         depends on (SMP && PPC_PSERIES) || PPC_PS3
 438
 439 config ARCH_POPULATES_NODE_MAP
 440         def_bool y
 441
 442 config SYS_SUPPORTS_HUGETLBFS
 443        def_bool y
 444        depends on PPC_BOOK3S_64
 445
 446 source "mm/Kconfig"
 447
 448 config ARCH_MEMORY_PROBE
 449         def_bool y
 450         depends on MEMORY_HOTPLUG
 451
 452 # Some NUMA nodes have memory ranges that span
 453 # other nodes.  Even though a pfn is valid and
 454 # between a node's start and end pfns, it may not
 455 # reside on that node.  See memmap_init_zone()
 456 # for details.
 457 config NODES_SPAN_OTHER_NODES
 458         def_bool y
 459         depends on NEED_MULTIPLE_NODES
 460
 461 config PPC_HAS_HASH_64K
 462         bool
 463         depends on PPC64
 464         default n
 465
 466 config STDBINUTILS
 467         bool "Using standard binutils settings"
 468         depends on 44x
 469         default y
 470         help
 471           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 472           Note, that kernel will be able to run only those applications,
 473           which had been compiled using binutils later than 2.17.50.0.3 with
 474           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 475           the older binutils, you can patch them with a trivial patch, which
 476           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 477
 478 choice
 479         prompt "Page size"
 480         default PPC_4K_PAGES
 481         help
 482           Select the kernel logical page size. Increasing the page size
 483           will reduce software overhead at each page boundary, allow
 484           hardware prefetch mechanisms to be more effective, and allow
 485           larger dma transfers increasing IO efficiency and reducing
 486           overhead. However the utilization of memory will increase.
 487           For example, each cached file will using a multiple of the
 488           page size to hold its contents and the difference between the
 489           end of file and the end of page is wasted.
 490
 491           Some dedicated systems, such as software raid serving with
 492           accelerated calculations, have shown significant increases.
 493
 494           If you configure a 64 bit kernel for 64k pages but the
 495           processor does not support them, then the kernel will simulate
 496           them with 4k pages, loading them on demand, but with the
 497           reduced software overhead and larger internal fragmentation.
 498           For the 32 bit kernel, a large page option will not be offered
 499           unless it is supported by the configured processor.
 500
 501           If unsure, choose 4K_PAGES.
 502
 503 config PPC_4K_PAGES
 504         bool "4k page size"
 505
 506 config PPC_16K_PAGES
 507         bool "16k page size" if 44x
 508
 509 config PPC_64K_PAGES
 510         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 511         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 512
 513 config PPC_256K_PAGES
 514         bool "256k page size" if 44x
 515         depends on !STDBINUTILS
 516         help
 517           Make the page size 256k.
 518
 519           As the ELF standard only requires alignment to support page
 520           sizes up to 64k, you will need to compile all of your user
 521           space applications with a non-standard binutils settings
 522           (see the STDBINUTILS description for details).
 523
 524           Say N unless you know what you are doing.
 525
 526 endchoice
 527
 528 config FORCE_MAX_ZONEORDER
 529         int "Maximum zone order"
 530         range 9 64 if PPC64 && PPC_64K_PAGES
 531         default "9" if PPC64 && PPC_64K_PAGES
 532         range 13 64 if PPC64 && !PPC_64K_PAGES
 533         default "13" if PPC64 && !PPC_64K_PAGES
 534         range 9 64 if PPC32 && PPC_16K_PAGES
 535         default "9" if PPC32 && PPC_16K_PAGES
 536         range 7 64 if PPC32 && PPC_64K_PAGES
 537         default "7" if PPC32 && PPC_64K_PAGES
 538         range 5 64 if PPC32 && PPC_256K_PAGES
 539         default "5" if PPC32 && PPC_256K_PAGES
 540         range 11 64
 541         default "11"
 542         help
 543           The kernel memory allocator divides physically contiguous memory
 544           blocks into "zones", where each zone is a power of two number of
 545           pages.  This option selects the largest power of two that the kernel
 546           keeps in the memory allocator.  If you need to allocate very large
 547           blocks of physically contiguous memory, then you may need to
 548           increase this value.
 549
 550           This config option is actually maximum order plus one. For example,
 551           a value of 11 means that the largest free memory block is 2^10 pages.
 552
 553           The page size is not necessarily 4KB.  For example, on 64-bit
 554           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 555           this in mind when choosing a value for this option.
 556
 557 config PPC_SUBPAGE_PROT
 558         bool "Support setting protections for 4k subpages"
 559         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 560         help
 561           This option adds support for a system call to allow user programs
 562           to set access permissions (read/write, readonly, or no access)
 563           on the 4k subpages of each 64k page.
 564
 565 config SCHED_SMT
 566         bool "SMT (Hyperthreading) scheduler support"
 567         depends on PPC64 && SMP
 568         help
 569           SMT scheduler support improves the CPU scheduler's decision making
 570           when dealing with POWER5 cpus at a cost of slightly increased
 571           overhead in some places. If unsure say N here.
 572
 573 config 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 if !44x || BROKEN
 600 config ARCH_WANTS_FREEZER_CONTROL
 601         def_bool y
 602         depends on ADB_PMU
 603
 604 source kernel/power/Kconfig
 605 endif
 606
 607 config SECCOMP
 608         bool "Enable seccomp to safely compute untrusted bytecode"
 609         depends on PROC_FS
 610         default y
 611         help
 612           This kernel feature is useful for number crunching applications
 613           that may need to compute untrusted bytecode during their
 614           execution. By using pipes or other transports made available to
 615           the process as file descriptors supporting the read/write
 616           syscalls, it's possible to isolate those applications in
 617           their own address space using seccomp. Once seccomp is
 618           enabled via /proc/<pid>/seccomp, it cannot be disabled
 619           and the task is only allowed to execute a few safe syscalls
 620           defined by each seccomp mode.
 621
 622           If unsure, say Y. Only embedded should say N here.
 623
 624 endmenu
 625
 626 config ISA_DMA_API
 627         bool
 628         default !PPC_ISERIES || PCI
 629
 630 menu "Bus options"
 631
 632 config ISA
 633         bool "Support for ISA-bus hardware"
 634         depends on PPC_PREP || PPC_CHRP
 635         select PPC_I8259
 636         help
 637           Find out whether you have ISA slots on your motherboard.  ISA is the
 638           name of a bus system, i.e. the way the CPU talks to the other stuff
 639           inside your box.  If you have an Apple machine, say N here; if you
 640           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 641           you have an embedded board, consult your board documentation.
 642
 643 config ZONE_DMA
 644         bool
 645         default y
 646
 647 config NEED_DMA_MAP_STATE
 648         def_bool (PPC64 || NOT_COHERENT_CACHE)
 649
 650 config NEED_SG_DMA_LENGTH
 651         def_bool y
 652
 653 config GENERIC_ISA_DMA
 654         bool
 655         depends on ISA_DMA_API
 656         default y
 657
 658 config PPC_INDIRECT_PCI
 659         bool
 660         depends on PCI
 661         default y if 40x || 44x
 662         default n
 663
 664 config EISA
 665         bool
 666
 667 config SBUS
 668         bool
 669
 670 config FSL_SOC
 671         bool
 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 4xx_SOC
 687         bool
 688
 689 config FSL_LBC
 690         bool
 691         help
 692           Freescale Localbus support
 693
 694 config FSL_GTM
 695         bool
 696         depends on PPC_83xx || QUICC_ENGINE || CPM2
 697         help
 698           Freescale General-purpose Timers support
 699
 700 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 701 config MCA
 702         bool
 703
 704 # Platforms that what PCI turned unconditionally just do select PCI
 705 # in their config node.  Platforms that want to choose at config
 706 # time should select PPC_PCI_CHOICE
 707 config PPC_PCI_CHOICE
 708         bool
 709
 710 config PCI
 711         bool "PCI support" if PPC_PCI_CHOICE
 712         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 713                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 714         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 715         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 716         select ARCH_SUPPORTS_MSI
 717         help
 718           Find out whether your system includes a PCI bus. PCI is the name of
 719           a bus system, i.e. the way the CPU talks to the other stuff inside
 720           your box.  If you say Y here, the kernel will include drivers and
 721           infrastructure code to support PCI bus devices.
 722
 723 config PCI_DOMAINS
 724         def_bool PCI
 725
 726 config PCI_SYSCALL
 727         def_bool PCI
 728
 729 config PCI_QSPAN
 730         bool "QSpan PCI"
 731         depends on !4xx && !CPM2 && 8xx
 732         select PPC_I8259
 733         help
 734           Say Y here if you have a system based on a Motorola 8xx-series
 735           embedded processor with a QSPAN PCI interface, otherwise say N.
 736
 737 config PCI_8260
 738         bool
 739         depends on PCI && 8260
 740         select PPC_INDIRECT_PCI
 741         default y
 742
 743 config 8260_PCI9
 744         bool "Enable workaround for MPC826x erratum PCI 9"
 745         depends on PCI_8260 && !8272
 746         default y
 747
 748 choice
 749         prompt "IDMA channel for PCI 9 workaround"
 750         depends on 8260_PCI9
 751
 752 config 8260_PCI9_IDMA1
 753         bool "IDMA1"
 754
 755 config 8260_PCI9_IDMA2
 756         bool "IDMA2"
 757
 758 config 8260_PCI9_IDMA3
 759         bool "IDMA3"
 760
 761 config 8260_PCI9_IDMA4
 762         bool "IDMA4"
 763
 764 endchoice
 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
 781         help
 782           If you say Y here, the kernel will include drivers and
 783           infrastructure code to support RapidIO interconnect devices.
 784
 785 source "drivers/rapidio/Kconfig"
 786
 787 endmenu
 788
 789 menu "Advanced setup"
 790         depends on PPC32
 791
 792 config ADVANCED_OPTIONS
 793         bool "Prompt for advanced kernel configuration options"
 794         help
 795           This option will enable prompting for a variety of advanced kernel
 796           configuration options.  These options can cause the kernel to not
 797           work if they are set incorrectly, but can be used to optimize certain
 798           aspects of kernel memory management.
 799
 800           Unless you know what you are doing, say N here.
 801
 802 comment "Default settings for advanced configuration options are used"
 803         depends on !ADVANCED_OPTIONS
 804
 805 config LOWMEM_SIZE_BOOL
 806         bool "Set maximum low memory"
 807         depends on ADVANCED_OPTIONS
 808         help
 809           This option allows you to set the maximum amount of memory which
 810           will be used as "low memory", that is, memory which the kernel can
 811           access directly, without having to set up a kernel virtual mapping.
 812           This can be useful in optimizing the layout of kernel virtual
 813           memory.
 814
 815           Say N here unless you know what you are doing.
 816
 817 config LOWMEM_SIZE
 818         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 819         default "0x30000000"
 820
 821 config LOWMEM_CAM_NUM_BOOL
 822         bool "Set number of CAMs to use to map low memory"
 823         depends on ADVANCED_OPTIONS && FSL_BOOKE
 824         help
 825           This option allows you to set the maximum number of CAM slots that
 826           will be used to map low memory.  There are a limited number of slots
 827           available and even more limited number that will fit in the L1 MMU.
 828           However, using more entries will allow mapping more low memory.  This
 829           can be useful in optimizing the layout of kernel virtual memory.
 830
 831           Say N here unless you know what you are doing.
 832
 833 config LOWMEM_CAM_NUM
 834         depends on FSL_BOOKE
 835         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 836         default 3
 837
 838 config RELOCATABLE
 839         bool "Build a relocatable kernel (EXPERIMENTAL)"
 840         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 841         help
 842           This builds a kernel image that is capable of running at the
 843           location the kernel is loaded at (some alignment restrictions may
 844           exist).
 845
 846           One use is for the kexec on panic case where the recovery kernel
 847           must live at a different physical address than the primary
 848           kernel.
 849
 850           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 851           it has been loaded at and the compile time physical addresses
 852           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 853           setting can still be useful to bootwrappers that need to know the
 854           load location of the kernel (eg. u-boot/mkimage).
 855
 856 config PAGE_OFFSET_BOOL
 857         bool "Set custom page offset address"
 858         depends on ADVANCED_OPTIONS
 859         help
 860           This option allows you to set the kernel virtual address at which
 861           the kernel will map low memory.  This can be useful in optimizing
 862           the virtual memory layout of the system.
 863
 864           Say N here unless you know what you are doing.
 865
 866 config PAGE_OFFSET
 867         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 868         default "0xc0000000"
 869
 870 config KERNEL_START_BOOL
 871         bool "Set custom kernel base address"
 872         depends on ADVANCED_OPTIONS
 873         help
 874           This option allows you to set the kernel virtual address at which
 875           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 876           however there are times (like kdump) that one might not want them
 877           to be the same.
 878
 879           Say N here unless you know what you are doing.
 880
 881 config KERNEL_START
 882         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 883         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 884         default "0xc2000000" if CRASH_DUMP && !RELOCATABLE
 885         default "0xc0000000"
 886
 887 config PHYSICAL_START_BOOL
 888         bool "Set physical address where the kernel is loaded"
 889         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 890         help
 891           This gives the physical address where the kernel is loaded.
 892
 893           Say N here unless you know what you are doing.
 894
 895 config PHYSICAL_START
 896         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 897         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE
 898         default "0x00000000"
 899
 900 config PHYSICAL_ALIGN
 901         hex
 902         default "0x04000000" if FSL_BOOKE
 903         help
 904           This value puts the alignment restrictions on physical address
 905           where kernel is loaded and run from. Kernel is compiled for an
 906           address which meets above alignment restriction.
 907
 908 config TASK_SIZE_BOOL
 909         bool "Set custom user task size"
 910         depends on ADVANCED_OPTIONS
 911         help
 912           This option allows you to set the amount of virtual address space
 913           allocated to user tasks.  This can be useful in optimizing the
 914           virtual memory layout of the system.
 915
 916           Say N here unless you know what you are doing.
 917
 918 config TASK_SIZE
 919         hex "Size of user task space" if TASK_SIZE_BOOL
 920         default "0x80000000" if PPC_PREP || PPC_8xx
 921         default "0xc0000000"
 922
 923 config CONSISTENT_SIZE_BOOL
 924         bool "Set custom consistent memory pool size"
 925         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 926         help
 927           This option allows you to set the size of the
 928           consistent memory pool.  This pool of virtual memory
 929           is used to make consistent memory allocations.
 930
 931 config CONSISTENT_SIZE
 932         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 933         default "0x00200000" if NOT_COHERENT_CACHE
 934
 935 config PIN_TLB
 936         bool "Pinned Kernel TLBs (860 ONLY)"
 937         depends on ADVANCED_OPTIONS && 8xx
 938 endmenu
 939
 940 if PPC64
 941 config RELOCATABLE
 942         bool "Build a relocatable kernel"
 943         help
 944           This builds a kernel image that is capable of running anywhere
 945           in the RMA (real memory area) at any 16k-aligned base address.
 946           The kernel is linked as a position-independent executable (PIE)
 947           and contains dynamic relocations which are processed early
 948           in the bootup process.
 949
 950           One use is for the kexec on panic case where the recovery kernel
 951           must live at a different physical address than the primary
 952           kernel.
 953
 954 config PAGE_OFFSET
 955         hex
 956         default "0xc000000000000000"
 957 config KERNEL_START
 958         hex
 959         default "0xc000000000000000"
 960 config PHYSICAL_START
 961         hex
 962         default "0x00000000"
 963 endif
 964
 965 source "net/Kconfig"
 966
 967 source "drivers/Kconfig"
 968
 969 source "fs/Kconfig"
 970
 971 source "arch/powerpc/sysdev/qe_lib/Kconfig"
 972
 973 source "lib/Kconfig"
 974
 975 source "arch/powerpc/Kconfig.debug"
 976
 977 source "security/Kconfig"
 978
 979 config KEYS_COMPAT
 980         bool
 981         depends on COMPAT && KEYS
 982         default y
 983
 984 source "crypto/Kconfig"
 985
 986 config PPC_CLOCK
 987         bool
 988         default n
 989         select HAVE_CLK
 990
 991 config PPC_LIB_RHEAP
 992         bool
 993
 994 source "arch/powerpc/kvm/Kconfig"