arch/powerpc/Kconfig

   1 source "arch/powerpc/platforms/Kconfig.cputype"
   2
   3 config PPC32
   4         bool
   5         default y if !PPC64
   6
   7 config 32BIT
   8         bool
   9         default y if PPC32
  10
  11 config 64BIT
  12         bool
  13         default y if PPC64
  14
  15 config WORD_SIZE
  16         int
  17         default 64 if PPC64
  18         default 32 if !PPC64
  19
  20 config ARCH_PHYS_ADDR_T_64BIT
  21        def_bool PPC64 || PHYS_64BIT
  22
  23 config ARCH_DMA_ADDR_T_64BIT
  24         def_bool ARCH_PHYS_ADDR_T_64BIT
  25
  26 config MMU
  27         bool
  28         default y
  29
  30 config HAVE_SETUP_PER_CPU_AREA
  31         def_bool PPC64
  32
  33 config NEED_PER_CPU_EMBED_FIRST_CHUNK
  34         def_bool PPC64
  35
  36 config NR_IRQS
  37         int "Number of virtual interrupt numbers"
  38         range 32 32768
  39         default "512"
  40         help
  41           This defines the number of virtual interrupt numbers the kernel
  42           can manage. Virtual interrupt numbers are what you see in
  43           /proc/interrupts. If you configure your system to have too few,
  44           drivers will fail to load or worse - handle with care.
  45
  46 config STACKTRACE_SUPPORT
  47         bool
  48         default y
  49
  50 config HAVE_LATENCYTOP_SUPPORT
  51         def_bool y
  52
  53 config TRACE_IRQFLAGS_SUPPORT
  54         bool
  55         default y
  56
  57 config LOCKDEP_SUPPORT
  58         bool
  59         default y
  60
  61 config RWSEM_GENERIC_SPINLOCK
  62         bool
  63
  64 config RWSEM_XCHGADD_ALGORITHM
  65         bool
  66         default y
  67
  68 config GENERIC_LOCKBREAK
  69         bool
  70         default y
  71         depends on SMP && PREEMPT
  72
  73 config ARCH_HAS_ILOG2_U32
  74         bool
  75         default y
  76
  77 config ARCH_HAS_ILOG2_U64
  78         bool
  79         default y if 64BIT
  80
  81 config GENERIC_HWEIGHT
  82         bool
  83         default y
  84
  85 config PPC
  86         bool
  87         default y
  88         select BINFMT_ELF
  89         select OF
  90         select OF_EARLY_FLATTREE
  91         select HAVE_FTRACE_MCOUNT_RECORD
  92         select HAVE_DYNAMIC_FTRACE
  93         select HAVE_FUNCTION_TRACER
  94         select HAVE_FUNCTION_GRAPH_TRACER
  95         select SYSCTL_EXCEPTION_TRACE
  96         select ARCH_WANT_OPTIONAL_GPIOLIB
  97         select VIRT_TO_BUS if !PPC64
  98         select HAVE_IDE
  99         select HAVE_IOREMAP_PROT
 100         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 101         select HAVE_KPROBES
 102         select HAVE_ARCH_KGDB
 103         select HAVE_KRETPROBES
 104         select HAVE_ARCH_TRACEHOOK
 105         select HAVE_MEMBLOCK
 106         select HAVE_MEMBLOCK_NODE_MAP
 107         select HAVE_DMA_ATTRS
 108         select HAVE_DMA_API_DEBUG
 109         select USE_GENERIC_SMP_HELPERS if SMP
 110         select HAVE_OPROFILE
 111         select HAVE_DEBUG_KMEMLEAK
 112         select GENERIC_ATOMIC64 if PPC32
 113         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 114         select HAVE_PERF_EVENTS
 115         select HAVE_REGS_AND_STACK_ACCESS_API
 116         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 117         select ARCH_WANT_IPC_PARSE_VERSION
 118         select SPARSE_IRQ
 119         select IRQ_DOMAIN
 120         select GENERIC_IRQ_SHOW
 121         select GENERIC_IRQ_SHOW_LEVEL
 122         select IRQ_FORCED_THREADING
 123         select HAVE_RCU_TABLE_FREE if SMP
 124         select HAVE_SYSCALL_TRACEPOINTS
 125         select HAVE_BPF_JIT if PPC64
 126         select HAVE_ARCH_JUMP_LABEL
 127         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 128         select GENERIC_SMP_IDLE_THREAD
 129         select GENERIC_CMOS_UPDATE
 130         select GENERIC_TIME_VSYSCALL_OLD
 131         select GENERIC_CLOCKEVENTS
 132         select GENERIC_STRNCPY_FROM_USER
 133         select GENERIC_STRNLEN_USER
 134         select HAVE_MOD_ARCH_SPECIFIC
 135         select MODULES_USE_ELF_RELA
 136         select CLONE_BACKWARDS
 137         select ARCH_USE_BUILTIN_BSWAP
 138         select OLD_SIGSUSPEND
 139         select OLD_SIGACTION if PPC32
 140         select HAVE_DEBUG_STACKOVERFLOW
 141         select HAVE_IRQ_EXIT_ON_IRQ_STACK
 142
 143 config EARLY_PRINTK
 144         bool
 145         default y
 146
 147 config COMPAT
 148         bool
 149         default y if PPC64
 150         select COMPAT_BINFMT_ELF
 151         select ARCH_WANT_OLD_COMPAT_IPC
 152         select COMPAT_OLD_SIGACTION
 153
 154 config SYSVIPC_COMPAT
 155         bool
 156         depends on COMPAT && SYSVIPC
 157         default y
 158
 159 # All PPC32s use generic nvram driver through ppc_md
 160 config GENERIC_NVRAM
 161         bool
 162         default y if PPC32
 163
 164 config SCHED_OMIT_FRAME_POINTER
 165         bool
 166         default y
 167
 168 config ARCH_MAY_HAVE_PC_FDC
 169         bool
 170         default !PPC_PSERIES || PCI
 171
 172 config PPC_OF
 173         def_bool y
 174
 175 config PPC_UDBG_16550
 176         bool
 177         default n
 178
 179 config GENERIC_TBSYNC
 180         bool
 181         default y if PPC32 && SMP
 182         default n
 183
 184 config AUDIT_ARCH
 185         bool
 186         default y
 187
 188 config GENERIC_BUG
 189         bool
 190         default y
 191         depends on BUG
 192
 193 config SYS_SUPPORTS_APM_EMULATION
 194         default y if PMAC_APM_EMU
 195         bool
 196
 197 config EPAPR_BOOT
 198         bool
 199         help
 200           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 201         default n
 202
 203 config DEFAULT_UIMAGE
 204         bool
 205         help
 206           Used to allow a board to specify it wants a uImage built by default
 207         default n
 208
 209 config REDBOOT
 210         bool
 211
 212 config ARCH_HIBERNATION_POSSIBLE
 213         bool
 214         default y
 215
 216 config ARCH_SUSPEND_POSSIBLE
 217         def_bool y
 218         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 219                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 220                    || 44x || 40x
 221
 222 config PPC_DCR_NATIVE
 223         bool
 224         default n
 225
 226 config PPC_DCR_MMIO
 227         bool
 228         default n
 229
 230 config PPC_DCR
 231         bool
 232         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 233         default y
 234
 235 config PPC_OF_PLATFORM_PCI
 236         bool
 237         depends on PCI
 238         depends on PPC64 # not supported on 32 bits yet
 239         default n
 240
 241 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 242         def_bool y
 243
 244 config ARCH_SUPPORTS_UPROBES
 245         def_bool y
 246
 247 config PPC_ADV_DEBUG_REGS
 248         bool
 249         depends on 40x || BOOKE
 250         default y
 251
 252 config PPC_ADV_DEBUG_IACS
 253         int
 254         depends on PPC_ADV_DEBUG_REGS
 255         default 4 if 44x
 256         default 2
 257
 258 config PPC_ADV_DEBUG_DACS
 259         int
 260         depends on PPC_ADV_DEBUG_REGS
 261         default 2
 262
 263 config PPC_ADV_DEBUG_DVCS
 264         int
 265         depends on PPC_ADV_DEBUG_REGS
 266         default 2 if 44x
 267         default 0
 268
 269 config PPC_ADV_DEBUG_DAC_RANGE
 270         bool
 271         depends on PPC_ADV_DEBUG_REGS && 44x
 272         default y
 273
 274 config PPC_EMULATE_SSTEP
 275         bool
 276         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 277
 278 source "init/Kconfig"
 279
 280 source "kernel/Kconfig.freezer"
 281
 282 source "arch/powerpc/sysdev/Kconfig"
 283 source "arch/powerpc/platforms/Kconfig"
 284
 285 menu "Kernel options"
 286
 287 config HIGHMEM
 288         bool "High memory support"
 289         depends on PPC32
 290
 291 source kernel/Kconfig.hz
 292 source kernel/Kconfig.preempt
 293 source "fs/Kconfig.binfmt"
 294
 295 config HUGETLB_PAGE_SIZE_VARIABLE
 296         bool
 297         depends on HUGETLB_PAGE
 298         default y
 299
 300 config MATH_EMULATION
 301         bool "Math emulation"
 302         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
 303         ---help---
 304           Some PowerPC chips designed for embedded applications do not have
 305           a floating-point unit and therefore do not implement the
 306           floating-point instructions in the PowerPC instruction set.  If you
 307           say Y here, the kernel will include code to emulate a floating-point
 308           unit, which will allow programs that use floating-point
 309           instructions to run.
 310
 311           This is also useful to emulate missing (optional) instructions
 312           such as fsqrt on cores that do have an FPU but do not implement
 313           them (such as Freescale BookE).
 314
 315 choice
 316         prompt "Math emulation options"
 317         default MATH_EMULATION_FULL
 318         depends on MATH_EMULATION
 319
 320 config  MATH_EMULATION_FULL
 321         bool "Emulate all the floating point instructions"
 322         ---help---
 323           Select this option will enable the kernel to support to emulate
 324           all the floating point instructions. If your SoC doesn't have
 325           a FPU, you should select this.
 326
 327 config MATH_EMULATION_HW_UNIMPLEMENTED
 328         bool "Just emulate the FPU unimplemented instructions"
 329         ---help---
 330           Select this if you know there does have a hardware FPU on your
 331           SoC, but some floating point instructions are not implemented by that.
 332
 333 endchoice
 334
 335 config PPC_TRANSACTIONAL_MEM
 336        bool "Transactional Memory support for POWERPC"
 337        depends on PPC_BOOK3S_64
 338        depends on SMP
 339        default n
 340        ---help---
 341          Support user-mode Transactional Memory on POWERPC.
 342
 343 config IOMMU_HELPER
 344         def_bool PPC64
 345
 346 config SWIOTLB
 347         bool "SWIOTLB support"
 348         default n
 349         select IOMMU_HELPER
 350         ---help---
 351           Support for IO bounce buffering for systems without an IOMMU.
 352           This allows us to DMA to the full physical address space on
 353           platforms where the size of a physical address is larger
 354           than the bus address.  Not all platforms support this.
 355
 356 config HOTPLUG_CPU
 357         bool "Support for enabling/disabling CPUs"
 358         depends on SMP && (PPC_PSERIES || \
 359         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 360         ---help---
 361           Say Y here to be able to disable and re-enable individual
 362           CPUs at runtime on SMP machines.
 363
 364           Say N if you are unsure.
 365
 366 config ARCH_CPU_PROBE_RELEASE
 367         def_bool y
 368         depends on HOTPLUG_CPU
 369
 370 config ARCH_ENABLE_MEMORY_HOTPLUG
 371         def_bool y
 372
 373 config ARCH_HAS_WALK_MEMORY
 374         def_bool y
 375
 376 config ARCH_ENABLE_MEMORY_HOTREMOVE
 377         def_bool y
 378
 379 config KEXEC
 380         bool "kexec system call"
 381         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 382         help
 383           kexec is a system call that implements the ability to shutdown your
 384           current kernel, and to start another kernel.  It is like a reboot
 385           but it is independent of the system firmware.   And like a reboot
 386           you can start any kernel with it, not just Linux.
 387
 388           The name comes from the similarity to the exec system call.
 389
 390           It is an ongoing process to be certain the hardware in a machine
 391           is properly shutdown, so do not be surprised if this code does not
 392           initially work for you.  As of this writing the exact hardware
 393           interface is strongly in flux, so no good recommendation can be
 394           made.
 395
 396 config CRASH_DUMP
 397         bool "Build a kdump crash kernel"
 398         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 399         select RELOCATABLE if PPC64 || 44x
 400         select DYNAMIC_MEMSTART if FSL_BOOKE
 401         help
 402           Build a kernel suitable for use as a kdump capture kernel.
 403           The same kernel binary can be used as production kernel and dump
 404           capture kernel.
 405
 406 config FA_DUMP
 407         bool "Firmware-assisted dump"
 408         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 409         help
 410           A robust mechanism to get reliable kernel crash dump with
 411           assistance from firmware. This approach does not use kexec,
 412           instead firmware assists in booting the kdump kernel
 413           while preserving memory contents. Firmware-assisted dump
 414           is meant to be a kdump replacement offering robustness and
 415           speed not possible without system firmware assistance.
 416
 417           If unsure, say "N"
 418
 419 config IRQ_ALL_CPUS
 420         bool "Distribute interrupts on all CPUs by default"
 421         depends on SMP && !MV64360
 422         help
 423           This option gives the kernel permission to distribute IRQs across
 424           multiple CPUs.  Saying N here will route all IRQs to the first
 425           CPU.  Generally saying Y is safe, although some problems have been
 426           reported with SMP Power Macintoshes with this option enabled.
 427
 428 config NUMA
 429         bool "NUMA support"
 430         depends on PPC64
 431         default y if SMP && PPC_PSERIES
 432
 433 config NODES_SHIFT
 434         int
 435         default "8" if PPC64
 436         default "4"
 437         depends on NEED_MULTIPLE_NODES
 438
 439 config ARCH_SELECT_MEMORY_MODEL
 440         def_bool y
 441         depends on PPC64
 442
 443 config ARCH_FLATMEM_ENABLE
 444         def_bool y
 445         depends on (PPC64 && !NUMA) || PPC32
 446
 447 config ARCH_SPARSEMEM_ENABLE
 448         def_bool y
 449         depends on PPC64
 450         select SPARSEMEM_VMEMMAP_ENABLE
 451
 452 config ARCH_SPARSEMEM_DEFAULT
 453         def_bool y
 454         depends on (SMP && PPC_PSERIES) || PPC_PS3
 455
 456 config SYS_SUPPORTS_HUGETLBFS
 457         bool
 458
 459 source "mm/Kconfig"
 460
 461 config ARCH_MEMORY_PROBE
 462         def_bool y
 463         depends on MEMORY_HOTPLUG
 464
 465 # Some NUMA nodes have memory ranges that span
 466 # other nodes.  Even though a pfn is valid and
 467 # between a node's start and end pfns, it may not
 468 # reside on that node.  See memmap_init_zone()
 469 # for details.
 470 config NODES_SPAN_OTHER_NODES
 471         def_bool y
 472         depends on NEED_MULTIPLE_NODES
 473
 474 config PPC_HAS_HASH_64K
 475         bool
 476         depends on PPC64
 477         default n
 478
 479 config STDBINUTILS
 480         bool "Using standard binutils settings"
 481         depends on 44x
 482         default y
 483         help
 484           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 485           Note, that kernel will be able to run only those applications,
 486           which had been compiled using binutils later than 2.17.50.0.3 with
 487           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 488           the older binutils, you can patch them with a trivial patch, which
 489           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 490
 491 choice
 492         prompt "Page size"
 493         default PPC_4K_PAGES
 494         help
 495           Select the kernel logical page size. Increasing the page size
 496           will reduce software overhead at each page boundary, allow
 497           hardware prefetch mechanisms to be more effective, and allow
 498           larger dma transfers increasing IO efficiency and reducing
 499           overhead. However the utilization of memory will increase.
 500           For example, each cached file will using a multiple of the
 501           page size to hold its contents and the difference between the
 502           end of file and the end of page is wasted.
 503
 504           Some dedicated systems, such as software raid serving with
 505           accelerated calculations, have shown significant increases.
 506
 507           If you configure a 64 bit kernel for 64k pages but the
 508           processor does not support them, then the kernel will simulate
 509           them with 4k pages, loading them on demand, but with the
 510           reduced software overhead and larger internal fragmentation.
 511           For the 32 bit kernel, a large page option will not be offered
 512           unless it is supported by the configured processor.
 513
 514           If unsure, choose 4K_PAGES.
 515
 516 config PPC_4K_PAGES
 517         bool "4k page size"
 518
 519 config PPC_16K_PAGES
 520         bool "16k page size" if 44x
 521
 522 config PPC_64K_PAGES
 523         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 524         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 525
 526 config PPC_256K_PAGES
 527         bool "256k page size" if 44x
 528         depends on !STDBINUTILS
 529         help
 530           Make the page size 256k.
 531
 532           As the ELF standard only requires alignment to support page
 533           sizes up to 64k, you will need to compile all of your user
 534           space applications with a non-standard binutils settings
 535           (see the STDBINUTILS description for details).
 536
 537           Say N unless you know what you are doing.
 538
 539 endchoice
 540
 541 config FORCE_MAX_ZONEORDER
 542         int "Maximum zone order"
 543         range 9 64 if PPC64 && PPC_64K_PAGES
 544         default "9" if PPC64 && PPC_64K_PAGES
 545         range 13 64 if PPC64 && !PPC_64K_PAGES
 546         default "13" if PPC64 && !PPC_64K_PAGES
 547         range 9 64 if PPC32 && PPC_16K_PAGES
 548         default "9" if PPC32 && PPC_16K_PAGES
 549         range 7 64 if PPC32 && PPC_64K_PAGES
 550         default "7" if PPC32 && PPC_64K_PAGES
 551         range 5 64 if PPC32 && PPC_256K_PAGES
 552         default "5" if PPC32 && PPC_256K_PAGES
 553         range 11 64
 554         default "11"
 555         help
 556           The kernel memory allocator divides physically contiguous memory
 557           blocks into "zones", where each zone is a power of two number of
 558           pages.  This option selects the largest power of two that the kernel
 559           keeps in the memory allocator.  If you need to allocate very large
 560           blocks of physically contiguous memory, then you may need to
 561           increase this value.
 562
 563           This config option is actually maximum order plus one. For example,
 564           a value of 11 means that the largest free memory block is 2^10 pages.
 565
 566           The page size is not necessarily 4KB.  For example, on 64-bit
 567           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 568           this in mind when choosing a value for this option.
 569
 570 config PPC_SUBPAGE_PROT
 571         bool "Support setting protections for 4k subpages"
 572         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 573         help
 574           This option adds support for a system call to allow user programs
 575           to set access permissions (read/write, readonly, or no access)
 576           on the 4k subpages of each 64k page.
 577
 578 config SCHED_SMT
 579         bool "SMT (Hyperthreading) scheduler support"
 580         depends on PPC64 && SMP
 581         help
 582           SMT scheduler support improves the CPU scheduler's decision making
 583           when dealing with POWER5 cpus at a cost of slightly increased
 584           overhead in some places. If unsure say N here.
 585
 586 config PPC_DENORMALISATION
 587         bool "PowerPC denormalisation exception handling"
 588         depends on PPC_BOOK3S_64
 589         default "y" if PPC_POWERNV
 590         ---help---
 591           Add support for handling denormalisation of single precision
 592           values.  Useful for bare metal only.  If unsure say Y here.
 593
 594 config CMDLINE_BOOL
 595         bool "Default bootloader kernel arguments"
 596
 597 config CMDLINE
 598         string "Initial kernel command string"
 599         depends on CMDLINE_BOOL
 600         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 601         help
 602           On some platforms, there is currently no way for the boot loader to
 603           pass arguments to the kernel. For these platforms, you can supply
 604           some command-line options at build time by entering them here.  In
 605           most cases you will need to specify the root device here.
 606
 607 config EXTRA_TARGETS
 608         string "Additional default image types"
 609         help
 610           List additional targets to be built by the bootwrapper here (separated
 611           by spaces).  This is useful for targets that depend of device tree
 612           files in the .dts directory.
 613
 614           Targets in this list will be build as part of the default build
 615           target, or when the user does a 'make zImage' or a
 616           'make zImage.initrd'.
 617
 618           If unsure, leave blank
 619
 620 config ARCH_WANTS_FREEZER_CONTROL
 621         def_bool y
 622         depends on ADB_PMU
 623
 624 source kernel/power/Kconfig
 625
 626 config SECCOMP
 627         bool "Enable seccomp to safely compute untrusted bytecode"
 628         depends on PROC_FS
 629         default y
 630         help
 631           This kernel feature is useful for number crunching applications
 632           that may need to compute untrusted bytecode during their
 633           execution. By using pipes or other transports made available to
 634           the process as file descriptors supporting the read/write
 635           syscalls, it's possible to isolate those applications in
 636           their own address space using seccomp. Once seccomp is
 637           enabled via /proc/<pid>/seccomp, it cannot be disabled
 638           and the task is only allowed to execute a few safe syscalls
 639           defined by each seccomp mode.
 640
 641           If unsure, say Y. Only embedded should say N here.
 642
 643 endmenu
 644
 645 config ISA_DMA_API
 646         bool
 647         default PCI
 648
 649 menu "Bus options"
 650
 651 config ISA
 652         bool "Support for ISA-bus hardware"
 653         depends on PPC_CHRP
 654         select PPC_I8259
 655         help
 656           Find out whether you have ISA slots on your motherboard.  ISA is the
 657           name of a bus system, i.e. the way the CPU talks to the other stuff
 658           inside your box.  If you have an Apple machine, say N here; if you
 659           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 660           embedded board, consult your board documentation.
 661
 662 config ZONE_DMA
 663         bool
 664         default y
 665
 666 config NEED_DMA_MAP_STATE
 667         def_bool (PPC64 || NOT_COHERENT_CACHE)
 668
 669 config NEED_SG_DMA_LENGTH
 670         def_bool y
 671
 672 config GENERIC_ISA_DMA
 673         bool
 674         depends on ISA_DMA_API
 675         default y
 676
 677 config PPC_INDIRECT_PCI
 678         bool
 679         depends on PCI
 680         default y if 40x || 44x
 681         default n
 682
 683 config EISA
 684         bool
 685
 686 config SBUS
 687         bool
 688
 689 config FSL_SOC
 690         bool
 691
 692 config FSL_PCI
 693         bool
 694         select PPC_INDIRECT_PCI
 695         select PCI_QUIRKS
 696
 697 config FSL_PMC
 698         bool
 699         default y
 700         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 701         help
 702           Freescale MPC85xx/MPC86xx power management controller support
 703           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 704
 705 config PPC4xx_CPM
 706         bool
 707         default y
 708         depends on SUSPEND && (44x || 40x)
 709         help
 710           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 711           It also enables support for two different idle states (idle-wait
 712           and idle-doze).
 713
 714 config 4xx_SOC
 715         bool
 716
 717 config FSL_LBC
 718         bool "Freescale Local Bus support"
 719         depends on FSL_SOC
 720         help
 721           Enables reporting of errors from the Freescale local bus
 722           controller.  Also contains some common code used by
 723           drivers for specific local bus peripherals.
 724
 725 config FSL_IFC
 726         bool
 727         depends on FSL_SOC
 728
 729 config FSL_GTM
 730         bool
 731         depends on PPC_83xx || QUICC_ENGINE || CPM2
 732         help
 733           Freescale General-purpose Timers support
 734
 735 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 736 config MCA
 737         bool
 738
 739 # Platforms that what PCI turned unconditionally just do select PCI
 740 # in their config node.  Platforms that want to choose at config
 741 # time should select PPC_PCI_CHOICE
 742 config PPC_PCI_CHOICE
 743         bool
 744
 745 config PCI
 746         bool "PCI support" if PPC_PCI_CHOICE
 747         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 748                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 749         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 750         select GENERIC_PCI_IOMAP
 751         help
 752           Find out whether your system includes a PCI bus. PCI is the name of
 753           a bus system, i.e. the way the CPU talks to the other stuff inside
 754           your box.  If you say Y here, the kernel will include drivers and
 755           infrastructure code to support PCI bus devices.
 756
 757 config PCI_DOMAINS
 758         def_bool PCI
 759
 760 config PCI_SYSCALL
 761         def_bool PCI
 762
 763 config PCI_QSPAN
 764         bool "QSpan PCI"
 765         depends on !4xx && !CPM2 && 8xx
 766         select PPC_I8259
 767         help
 768           Say Y here if you have a system based on a Motorola 8xx-series
 769           embedded processor with a QSPAN PCI interface, otherwise say N.
 770
 771 config PCI_8260
 772         bool
 773         depends on PCI && 8260
 774         select PPC_INDIRECT_PCI
 775         default y
 776
 777 source "drivers/pci/pcie/Kconfig"
 778
 779 source "drivers/pci/Kconfig"
 780
 781 source "drivers/pcmcia/Kconfig"
 782
 783 source "drivers/pci/hotplug/Kconfig"
 784
 785 config HAS_RAPIDIO
 786         bool
 787         default n
 788
 789 config RAPIDIO
 790         bool "RapidIO support"
 791         depends on HAS_RAPIDIO || PCI
 792         help
 793           If you say Y here, the kernel will include drivers and
 794           infrastructure code to support RapidIO interconnect devices.
 795
 796 config FSL_RIO
 797         bool "Freescale Embedded SRIO Controller support"
 798         depends on RAPIDIO && HAS_RAPIDIO
 799         default "n"
 800         ---help---
 801           Include support for RapidIO controller on Freescale embedded
 802           processors (MPC8548, MPC8641, etc).
 803
 804 source "drivers/rapidio/Kconfig"
 805
 806 endmenu
 807
 808 config NONSTATIC_KERNEL
 809         bool
 810         default n
 811
 812 menu "Advanced setup"
 813         depends on PPC32
 814
 815 config ADVANCED_OPTIONS
 816         bool "Prompt for advanced kernel configuration options"
 817         help
 818           This option will enable prompting for a variety of advanced kernel
 819           configuration options.  These options can cause the kernel to not
 820           work if they are set incorrectly, but can be used to optimize certain
 821           aspects of kernel memory management.
 822
 823           Unless you know what you are doing, say N here.
 824
 825 comment "Default settings for advanced configuration options are used"
 826         depends on !ADVANCED_OPTIONS
 827
 828 config LOWMEM_SIZE_BOOL
 829         bool "Set maximum low memory"
 830         depends on ADVANCED_OPTIONS
 831         help
 832           This option allows you to set the maximum amount of memory which
 833           will be used as "low memory", that is, memory which the kernel can
 834           access directly, without having to set up a kernel virtual mapping.
 835           This can be useful in optimizing the layout of kernel virtual
 836           memory.
 837
 838           Say N here unless you know what you are doing.
 839
 840 config LOWMEM_SIZE
 841         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 842         default "0x30000000"
 843
 844 config LOWMEM_CAM_NUM_BOOL
 845         bool "Set number of CAMs to use to map low memory"
 846         depends on ADVANCED_OPTIONS && FSL_BOOKE
 847         help
 848           This option allows you to set the maximum number of CAM slots that
 849           will be used to map low memory.  There are a limited number of slots
 850           available and even more limited number that will fit in the L1 MMU.
 851           However, using more entries will allow mapping more low memory.  This
 852           can be useful in optimizing the layout of kernel virtual memory.
 853
 854           Say N here unless you know what you are doing.
 855
 856 config LOWMEM_CAM_NUM
 857         depends on FSL_BOOKE
 858         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 859         default 3
 860
 861 config DYNAMIC_MEMSTART
 862         bool "Enable page aligned dynamic load address for kernel"
 863         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 864         select NONSTATIC_KERNEL
 865         help
 866           This option enables the kernel to be loaded at any page aligned
 867           physical address. The kernel creates a mapping from KERNELBASE to
 868           the address where the kernel is loaded. The page size here implies
 869           the TLB page size of the mapping for kernel on the particular platform.
 870           Please refer to the init code for finding the TLB page size.
 871
 872           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 873           kernel image, where the only restriction is the page aligned kernel
 874           load address. When this option is enabled, the compile time physical
 875           address CONFIG_PHYSICAL_START is ignored.
 876
 877           This option is overridden by CONFIG_RELOCATABLE
 878
 879 config RELOCATABLE
 880         bool "Build a relocatable kernel"
 881         depends on ADVANCED_OPTIONS && FLATMEM && 44x
 882         select NONSTATIC_KERNEL
 883         help
 884           This builds a kernel image that is capable of running at the
 885           location the kernel is loaded at, without any alignment restrictions.
 886           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 887
 888           One use is for the kexec on panic case where the recovery kernel
 889           must live at a different physical address than the primary
 890           kernel.
 891
 892           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 893           it has been loaded at and the compile time physical addresses
 894           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 895           setting can still be useful to bootwrappers that need to know the
 896           load address of the kernel (eg. u-boot/mkimage).
 897
 898 config RELOCATABLE_PPC32
 899         def_bool y
 900         depends on PPC32 && RELOCATABLE
 901
 902 config PAGE_OFFSET_BOOL
 903         bool "Set custom page offset address"
 904         depends on ADVANCED_OPTIONS
 905         help
 906           This option allows you to set the kernel virtual address at which
 907           the kernel will map low memory.  This can be useful in optimizing
 908           the virtual memory layout of the system.
 909
 910           Say N here unless you know what you are doing.
 911
 912 config PAGE_OFFSET
 913         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 914         default "0xc0000000"
 915
 916 config KERNEL_START_BOOL
 917         bool "Set custom kernel base address"
 918         depends on ADVANCED_OPTIONS
 919         help
 920           This option allows you to set the kernel virtual address at which
 921           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 922           however there are times (like kdump) that one might not want them
 923           to be the same.
 924
 925           Say N here unless you know what you are doing.
 926
 927 config KERNEL_START
 928         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 929         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 930         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 931         default "0xc0000000"
 932
 933 config PHYSICAL_START_BOOL
 934         bool "Set physical address where the kernel is loaded"
 935         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 936         help
 937           This gives the physical address where the kernel is loaded.
 938
 939           Say N here unless you know what you are doing.
 940
 941 config PHYSICAL_START
 942         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 943         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 944         default "0x00000000"
 945
 946 config PHYSICAL_ALIGN
 947         hex
 948         default "0x04000000" if FSL_BOOKE
 949         help
 950           This value puts the alignment restrictions on physical address
 951           where kernel is loaded and run from. Kernel is compiled for an
 952           address which meets above alignment restriction.
 953
 954 config TASK_SIZE_BOOL
 955         bool "Set custom user task size"
 956         depends on ADVANCED_OPTIONS
 957         help
 958           This option allows you to set the amount of virtual address space
 959           allocated to user tasks.  This can be useful in optimizing the
 960           virtual memory layout of the system.
 961
 962           Say N here unless you know what you are doing.
 963
 964 config TASK_SIZE
 965         hex "Size of user task space" if TASK_SIZE_BOOL
 966         default "0x80000000" if PPC_8xx
 967         default "0xc0000000"
 968
 969 config CONSISTENT_SIZE_BOOL
 970         bool "Set custom consistent memory pool size"
 971         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 972         help
 973           This option allows you to set the size of the
 974           consistent memory pool.  This pool of virtual memory
 975           is used to make consistent memory allocations.
 976
 977 config CONSISTENT_SIZE
 978         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 979         default "0x00200000" if NOT_COHERENT_CACHE
 980
 981 config PIN_TLB
 982         bool "Pinned Kernel TLBs (860 ONLY)"
 983         depends on ADVANCED_OPTIONS && 8xx
 984 endmenu
 985
 986 if PPC64
 987 config RELOCATABLE
 988         bool "Build a relocatable kernel"
 989         select NONSTATIC_KERNEL
 990         help
 991           This builds a kernel image that is capable of running anywhere
 992           in the RMA (real memory area) at any 16k-aligned base address.
 993           The kernel is linked as a position-independent executable (PIE)
 994           and contains dynamic relocations which are processed early
 995           in the bootup process.
 996
 997           One use is for the kexec on panic case where the recovery kernel
 998           must live at a different physical address than the primary
 999           kernel.
1000
1001 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1002 config PAGE_OFFSET
1003         hex
1004         default "0xc000000000000000"
1005 config KERNEL_START
1006         hex
1007         default "0xc000000000000000"
1008 config PHYSICAL_START
1009         hex
1010         default "0x00000000"
1011 endif
1012
1013 source "net/Kconfig"
1014
1015 source "drivers/Kconfig"
1016
1017 source "fs/Kconfig"
1018
1019 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1020
1021 source "lib/Kconfig"
1022
1023 source "arch/powerpc/Kconfig.debug"
1024
1025 source "security/Kconfig"
1026
1027 config KEYS_COMPAT
1028         bool
1029         depends on COMPAT && KEYS
1030         default y
1031
1032 source "crypto/Kconfig"
1033
1034 config PPC_CLOCK
1035         bool
1036         default n
1037         select HAVE_CLK
1038
1039 config PPC_LIB_RHEAP
1040         bool
1041
1042 source "arch/powerpc/kvm/Kconfig"