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 SYSCTL_EXCEPTION_TRACE
 103         select ARCH_WANT_OPTIONAL_GPIOLIB
 104         select HAVE_IDE
 105         select HAVE_IOREMAP_PROT
 106         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 107         select HAVE_KPROBES
 108         select HAVE_ARCH_KGDB
 109         select HAVE_KRETPROBES
 110         select HAVE_ARCH_TRACEHOOK
 111         select HAVE_MEMBLOCK
 112         select HAVE_MEMBLOCK_NODE_MAP
 113         select HAVE_DMA_ATTRS
 114         select HAVE_DMA_API_DEBUG
 115         select USE_GENERIC_SMP_HELPERS if SMP
 116         select HAVE_OPROFILE
 117         select HAVE_DEBUG_KMEMLEAK
 118         select HAVE_SYSCALL_WRAPPERS if PPC64
 119         select GENERIC_ATOMIC64 if PPC32
 120         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 121         select HAVE_IRQ_WORK
 122         select HAVE_PERF_EVENTS
 123         select HAVE_REGS_AND_STACK_ACCESS_API
 124         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 125         select HAVE_GENERIC_HARDIRQS
 126         select ARCH_WANT_IPC_PARSE_VERSION
 127         select SPARSE_IRQ
 128         select IRQ_PER_CPU
 129         select IRQ_DOMAIN
 130         select GENERIC_IRQ_SHOW
 131         select GENERIC_IRQ_SHOW_LEVEL
 132         select IRQ_FORCED_THREADING
 133         select HAVE_RCU_TABLE_FREE if SMP
 134         select HAVE_SYSCALL_TRACEPOINTS
 135         select HAVE_BPF_JIT if PPC64
 136         select HAVE_ARCH_JUMP_LABEL
 137         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 138         select GENERIC_SMP_IDLE_THREAD
 139         select GENERIC_CMOS_UPDATE
 140         select GENERIC_TIME_VSYSCALL_OLD
 141         select GENERIC_CLOCKEVENTS
 142         select GENERIC_STRNCPY_FROM_USER
 143         select GENERIC_STRNLEN_USER
 144         select GENERIC_KERNEL_THREAD
 145         select HAVE_MOD_ARCH_SPECIFIC
 146         select MODULES_USE_ELF_RELA
 147         select GENERIC_KERNEL_EXECVE
 148         select CLONE_BACKWARDS
 149
 150 config EARLY_PRINTK
 151         bool
 152         default y
 153
 154 config COMPAT
 155         bool
 156         default y if PPC64
 157         select COMPAT_BINFMT_ELF
 158         select ARCH_WANT_OLD_COMPAT_IPC
 159
 160 config SYSVIPC_COMPAT
 161         bool
 162         depends on COMPAT && SYSVIPC
 163         default y
 164
 165 # All PPC32s use generic nvram driver through ppc_md
 166 config GENERIC_NVRAM
 167         bool
 168         default y if PPC32
 169
 170 config SCHED_OMIT_FRAME_POINTER
 171         bool
 172         default y
 173
 174 config ARCH_MAY_HAVE_PC_FDC
 175         bool
 176         default !PPC_PSERIES || PCI
 177
 178 config PPC_OF
 179         def_bool y
 180
 181 config PPC_UDBG_16550
 182         bool
 183         default n
 184
 185 config GENERIC_TBSYNC
 186         bool
 187         default y if PPC32 && SMP
 188         default n
 189
 190 config AUDIT_ARCH
 191         bool
 192         default y
 193
 194 config GENERIC_BUG
 195         bool
 196         default y
 197         depends on BUG
 198
 199 config SYS_SUPPORTS_APM_EMULATION
 200         default y if PMAC_APM_EMU
 201         bool
 202
 203 config EPAPR_BOOT
 204         bool
 205         help
 206           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 207         default n
 208
 209 config DEFAULT_UIMAGE
 210         bool
 211         help
 212           Used to allow a board to specify it wants a uImage built by default
 213         default n
 214
 215 config REDBOOT
 216         bool
 217
 218 config ARCH_HIBERNATION_POSSIBLE
 219         bool
 220         default y
 221
 222 config ARCH_SUSPEND_POSSIBLE
 223         def_bool y
 224         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 225                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 226                    || 44x || 40x
 227
 228 config PPC_DCR_NATIVE
 229         bool
 230         default n
 231
 232 config PPC_DCR_MMIO
 233         bool
 234         default n
 235
 236 config PPC_DCR
 237         bool
 238         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 239         default y
 240
 241 config PPC_OF_PLATFORM_PCI
 242         bool
 243         depends on PCI
 244         depends on PPC64 # not supported on 32 bits yet
 245         default n
 246
 247 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 248         def_bool y
 249
 250 config ARCH_SUPPORTS_UPROBES
 251         def_bool y
 252
 253 config PPC_ADV_DEBUG_REGS
 254         bool
 255         depends on 40x || BOOKE
 256         default y
 257
 258 config PPC_ADV_DEBUG_IACS
 259         int
 260         depends on PPC_ADV_DEBUG_REGS
 261         default 4 if 44x
 262         default 2
 263
 264 config PPC_ADV_DEBUG_DACS
 265         int
 266         depends on PPC_ADV_DEBUG_REGS
 267         default 2
 268
 269 config PPC_ADV_DEBUG_DVCS
 270         int
 271         depends on PPC_ADV_DEBUG_REGS
 272         default 2 if 44x
 273         default 0
 274
 275 config PPC_ADV_DEBUG_DAC_RANGE
 276         bool
 277         depends on PPC_ADV_DEBUG_REGS && 44x
 278         default y
 279
 280 source "init/Kconfig"
 281
 282 source "kernel/Kconfig.freezer"
 283
 284 source "arch/powerpc/sysdev/Kconfig"
 285 source "arch/powerpc/platforms/Kconfig"
 286
 287 menu "Kernel options"
 288
 289 config HIGHMEM
 290         bool "High memory support"
 291         depends on PPC32
 292
 293 source kernel/Kconfig.hz
 294 source kernel/Kconfig.preempt
 295 source "fs/Kconfig.binfmt"
 296
 297 config HUGETLB_PAGE_SIZE_VARIABLE
 298         bool
 299         depends on HUGETLB_PAGE
 300         default y
 301
 302 config MATH_EMULATION
 303         bool "Math emulation"
 304         depends on 4xx || 8xx || E200 || PPC_MPC832x || E500
 305         ---help---
 306           Some PowerPC chips designed for embedded applications do not have
 307           a floating-point unit and therefore do not implement the
 308           floating-point instructions in the PowerPC instruction set.  If you
 309           say Y here, the kernel will include code to emulate a floating-point
 310           unit, which will allow programs that use floating-point
 311           instructions to run.
 312
 313 config 8XX_MINIMAL_FPEMU
 314         bool "Minimal math emulation for 8xx"
 315         depends on 8xx && !MATH_EMULATION
 316         help
 317           Older arch/ppc kernels still emulated a few floating point
 318           instructions such as load and store, even when full math
 319           emulation is disabled.  Say "Y" here if you want to preserve
 320           this behavior.
 321
 322           It is recommended that you build a soft-float userspace instead.
 323
 324 config IOMMU_HELPER
 325         def_bool PPC64
 326
 327 config SWIOTLB
 328         bool "SWIOTLB support"
 329         default n
 330         select IOMMU_HELPER
 331         ---help---
 332           Support for IO bounce buffering for systems without an IOMMU.
 333           This allows us to DMA to the full physical address space on
 334           platforms where the size of a physical address is larger
 335           than the bus address.  Not all platforms support this.
 336
 337 config HOTPLUG_CPU
 338         bool "Support for enabling/disabling CPUs"
 339         depends on SMP && HOTPLUG && EXPERIMENTAL && (PPC_PSERIES || \
 340         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 341         ---help---
 342           Say Y here to be able to disable and re-enable individual
 343           CPUs at runtime on SMP machines.
 344
 345           Say N if you are unsure.
 346
 347 config ARCH_CPU_PROBE_RELEASE
 348         def_bool y
 349         depends on HOTPLUG_CPU
 350
 351 config ARCH_ENABLE_MEMORY_HOTPLUG
 352         def_bool y
 353
 354 config ARCH_HAS_WALK_MEMORY
 355         def_bool y
 356
 357 config ARCH_ENABLE_MEMORY_HOTREMOVE
 358         def_bool y
 359
 360 config KEXEC
 361         bool "kexec system call (EXPERIMENTAL)"
 362         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) && EXPERIMENTAL
 363         help
 364           kexec is a system call that implements the ability to shutdown your
 365           current kernel, and to start another kernel.  It is like a reboot
 366           but it is independent of the system firmware.   And like a reboot
 367           you can start any kernel with it, not just Linux.
 368
 369           The name comes from the similarity to the exec system call.
 370
 371           It is an ongoing process to be certain the hardware in a machine
 372           is properly shutdown, so do not be surprised if this code does not
 373           initially work for you.  It may help to enable device hotplugging
 374           support.  As of this writing the exact hardware interface is
 375           strongly in flux, so no good recommendation can be made.
 376
 377 config CRASH_DUMP
 378         bool "Build a kdump crash kernel"
 379         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 380         select RELOCATABLE if PPC64 || 44x
 381         select DYNAMIC_MEMSTART if FSL_BOOKE
 382         help
 383           Build a kernel suitable for use as a kdump capture kernel.
 384           The same kernel binary can be used as production kernel and dump
 385           capture kernel.
 386
 387 config FA_DUMP
 388         bool "Firmware-assisted dump"
 389         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 390         help
 391           A robust mechanism to get reliable kernel crash dump with
 392           assistance from firmware. This approach does not use kexec,
 393           instead firmware assists in booting the kdump kernel
 394           while preserving memory contents. Firmware-assisted dump
 395           is meant to be a kdump replacement offering robustness and
 396           speed not possible without system firmware assistance.
 397
 398           If unsure, say "N"
 399
 400 config IRQ_ALL_CPUS
 401         bool "Distribute interrupts on all CPUs by default"
 402         depends on SMP && !MV64360
 403         help
 404           This option gives the kernel permission to distribute IRQs across
 405           multiple CPUs.  Saying N here will route all IRQs to the first
 406           CPU.  Generally saying Y is safe, although some problems have been
 407           reported with SMP Power Macintoshes with this option enabled.
 408
 409 config NUMA
 410         bool "NUMA support"
 411         depends on PPC64
 412         default y if SMP && PPC_PSERIES
 413
 414 config NODES_SHIFT
 415         int
 416         default "8" if PPC64
 417         default "4"
 418         depends on NEED_MULTIPLE_NODES
 419
 420 config MAX_ACTIVE_REGIONS
 421         int
 422         default "256" if PPC64
 423         default "32"
 424
 425 config ARCH_SELECT_MEMORY_MODEL
 426         def_bool y
 427         depends on PPC64
 428
 429 config ARCH_FLATMEM_ENABLE
 430         def_bool y
 431         depends on (PPC64 && !NUMA) || PPC32
 432
 433 config ARCH_SPARSEMEM_ENABLE
 434         def_bool y
 435         depends on PPC64
 436         select SPARSEMEM_VMEMMAP_ENABLE
 437
 438 config ARCH_SPARSEMEM_DEFAULT
 439         def_bool y
 440         depends on (SMP && PPC_PSERIES) || PPC_PS3
 441
 442 config SYS_SUPPORTS_HUGETLBFS
 443         bool
 444
 445 source "mm/Kconfig"
 446
 447 config ARCH_MEMORY_PROBE
 448         def_bool y
 449         depends on MEMORY_HOTPLUG
 450
 451 # Some NUMA nodes have memory ranges that span
 452 # other nodes.  Even though a pfn is valid and
 453 # between a node's start and end pfns, it may not
 454 # reside on that node.  See memmap_init_zone()
 455 # for details.
 456 config NODES_SPAN_OTHER_NODES
 457         def_bool y
 458         depends on NEED_MULTIPLE_NODES
 459
 460 config PPC_HAS_HASH_64K
 461         bool
 462         depends on PPC64
 463         default n
 464
 465 config STDBINUTILS
 466         bool "Using standard binutils settings"
 467         depends on 44x
 468         default y
 469         help
 470           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 471           Note, that kernel will be able to run only those applications,
 472           which had been compiled using binutils later than 2.17.50.0.3 with
 473           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 474           the older binutils, you can patch them with a trivial patch, which
 475           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 476
 477 choice
 478         prompt "Page size"
 479         default PPC_4K_PAGES
 480         help
 481           Select the kernel logical page size. Increasing the page size
 482           will reduce software overhead at each page boundary, allow
 483           hardware prefetch mechanisms to be more effective, and allow
 484           larger dma transfers increasing IO efficiency and reducing
 485           overhead. However the utilization of memory will increase.
 486           For example, each cached file will using a multiple of the
 487           page size to hold its contents and the difference between the
 488           end of file and the end of page is wasted.
 489
 490           Some dedicated systems, such as software raid serving with
 491           accelerated calculations, have shown significant increases.
 492
 493           If you configure a 64 bit kernel for 64k pages but the
 494           processor does not support them, then the kernel will simulate
 495           them with 4k pages, loading them on demand, but with the
 496           reduced software overhead and larger internal fragmentation.
 497           For the 32 bit kernel, a large page option will not be offered
 498           unless it is supported by the configured processor.
 499
 500           If unsure, choose 4K_PAGES.
 501
 502 config PPC_4K_PAGES
 503         bool "4k page size"
 504
 505 config PPC_16K_PAGES
 506         bool "16k page size" if 44x
 507
 508 config PPC_64K_PAGES
 509         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 510         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 511
 512 config PPC_256K_PAGES
 513         bool "256k page size" if 44x
 514         depends on !STDBINUTILS
 515         help
 516           Make the page size 256k.
 517
 518           As the ELF standard only requires alignment to support page
 519           sizes up to 64k, you will need to compile all of your user
 520           space applications with a non-standard binutils settings
 521           (see the STDBINUTILS description for details).
 522
 523           Say N unless you know what you are doing.
 524
 525 endchoice
 526
 527 config FORCE_MAX_ZONEORDER
 528         int "Maximum zone order"
 529         range 9 64 if PPC64 && PPC_64K_PAGES
 530         default "9" if PPC64 && PPC_64K_PAGES
 531         range 13 64 if PPC64 && !PPC_64K_PAGES
 532         default "13" if PPC64 && !PPC_64K_PAGES
 533         range 9 64 if PPC32 && PPC_16K_PAGES
 534         default "9" if PPC32 && PPC_16K_PAGES
 535         range 7 64 if PPC32 && PPC_64K_PAGES
 536         default "7" if PPC32 && PPC_64K_PAGES
 537         range 5 64 if PPC32 && PPC_256K_PAGES
 538         default "5" if PPC32 && PPC_256K_PAGES
 539         range 11 64
 540         default "11"
 541         help
 542           The kernel memory allocator divides physically contiguous memory
 543           blocks into "zones", where each zone is a power of two number of
 544           pages.  This option selects the largest power of two that the kernel
 545           keeps in the memory allocator.  If you need to allocate very large
 546           blocks of physically contiguous memory, then you may need to
 547           increase this value.
 548
 549           This config option is actually maximum order plus one. For example,
 550           a value of 11 means that the largest free memory block is 2^10 pages.
 551
 552           The page size is not necessarily 4KB.  For example, on 64-bit
 553           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 554           this in mind when choosing a value for this option.
 555
 556 config PPC_SUBPAGE_PROT
 557         bool "Support setting protections for 4k subpages"
 558         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 559         help
 560           This option adds support for a system call to allow user programs
 561           to set access permissions (read/write, readonly, or no access)
 562           on the 4k subpages of each 64k page.
 563
 564 config SCHED_SMT
 565         bool "SMT (Hyperthreading) scheduler support"
 566         depends on PPC64 && SMP
 567         help
 568           SMT scheduler support improves the CPU scheduler's decision making
 569           when dealing with POWER5 cpus at a cost of slightly increased
 570           overhead in some places. If unsure say N here.
 571
 572 config PPC_DENORMALISATION
 573         bool "PowerPC denormalisation exception handling"
 574         depends on PPC_BOOK3S_64
 575         default "n"
 576         ---help---
 577           Add support for handling denormalisation of single precision
 578           values.  Useful for bare metal only.  If unsure say Y here.
 579
 580 config CMDLINE_BOOL
 581         bool "Default bootloader kernel arguments"
 582
 583 config CMDLINE
 584         string "Initial kernel command string"
 585         depends on CMDLINE_BOOL
 586         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 587         help
 588           On some platforms, there is currently no way for the boot loader to
 589           pass arguments to the kernel. For these platforms, you can supply
 590           some command-line options at build time by entering them here.  In
 591           most cases you will need to specify the root device here.
 592
 593 config EXTRA_TARGETS
 594         string "Additional default image types"
 595         help
 596           List additional targets to be built by the bootwrapper here (separated
 597           by spaces).  This is useful for targets that depend of device tree
 598           files in the .dts directory.
 599
 600           Targets in this list will be build as part of the default build
 601           target, or when the user does a 'make zImage' or a
 602           'make zImage.initrd'.
 603
 604           If unsure, leave blank
 605
 606 config ARCH_WANTS_FREEZER_CONTROL
 607         def_bool y
 608         depends on ADB_PMU
 609
 610 source kernel/power/Kconfig
 611
 612 config SECCOMP
 613         bool "Enable seccomp to safely compute untrusted bytecode"
 614         depends on PROC_FS
 615         default y
 616         help
 617           This kernel feature is useful for number crunching applications
 618           that may need to compute untrusted bytecode during their
 619           execution. By using pipes or other transports made available to
 620           the process as file descriptors supporting the read/write
 621           syscalls, it's possible to isolate those applications in
 622           their own address space using seccomp. Once seccomp is
 623           enabled via /proc/<pid>/seccomp, it cannot be disabled
 624           and the task is only allowed to execute a few safe syscalls
 625           defined by each seccomp mode.
 626
 627           If unsure, say Y. Only embedded should say N here.
 628
 629 endmenu
 630
 631 config ISA_DMA_API
 632         bool
 633         default PCI
 634
 635 menu "Bus options"
 636
 637 config ISA
 638         bool "Support for ISA-bus hardware"
 639         depends on PPC_PREP || PPC_CHRP
 640         select PPC_I8259
 641         help
 642           Find out whether you have ISA slots on your motherboard.  ISA is the
 643           name of a bus system, i.e. the way the CPU talks to the other stuff
 644           inside your box.  If you have an Apple machine, say N here; if you
 645           have an IBM RS/6000 or pSeries machine or a PReP machine, say Y.  If
 646           you have an embedded board, consult your board documentation.
 647
 648 config ZONE_DMA
 649         bool
 650         default y
 651
 652 config NEED_DMA_MAP_STATE
 653         def_bool (PPC64 || NOT_COHERENT_CACHE)
 654
 655 config NEED_SG_DMA_LENGTH
 656         def_bool y
 657
 658 config GENERIC_ISA_DMA
 659         bool
 660         depends on ISA_DMA_API
 661         default y
 662
 663 config PPC_INDIRECT_PCI
 664         bool
 665         depends on PCI
 666         default y if 40x || 44x
 667         default n
 668
 669 config EISA
 670         bool
 671
 672 config SBUS
 673         bool
 674
 675 config FSL_SOC
 676         bool
 677         select HAVE_CAN_FLEXCAN if NET && CAN
 678         select PPC_CLOCK
 679
 680 config FSL_PCI
 681         bool
 682         select PPC_INDIRECT_PCI
 683         select PCI_QUIRKS
 684
 685 config FSL_PMC
 686         bool
 687         default y
 688         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 689         help
 690           Freescale MPC85xx/MPC86xx power management controller support
 691           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 692
 693 config PPC4xx_CPM
 694         bool
 695         default y
 696         depends on SUSPEND && (44x || 40x)
 697         help
 698           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 699           It also enables support for two different idle states (idle-wait
 700           and idle-doze).
 701
 702 config 4xx_SOC
 703         bool
 704
 705 config FSL_LBC
 706         bool "Freescale Local Bus support"
 707         depends on FSL_SOC
 708         help
 709           Enables reporting of errors from the Freescale local bus
 710           controller.  Also contains some common code used by
 711           drivers for specific local bus peripherals.
 712
 713 config FSL_IFC
 714         bool
 715         depends on FSL_SOC
 716
 717 config FSL_GTM
 718         bool
 719         depends on PPC_83xx || QUICC_ENGINE || CPM2
 720         help
 721           Freescale General-purpose Timers support
 722
 723 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 724 config MCA
 725         bool
 726
 727 # Platforms that what PCI turned unconditionally just do select PCI
 728 # in their config node.  Platforms that want to choose at config
 729 # time should select PPC_PCI_CHOICE
 730 config PPC_PCI_CHOICE
 731         bool
 732
 733 config PCI
 734         bool "PCI support" if PPC_PCI_CHOICE
 735         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 736                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 737         default PCI_PERMEDIA if !4xx && !CPM2 && !8xx
 738         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 739         select ARCH_SUPPORTS_MSI
 740         select GENERIC_PCI_IOMAP
 741         help
 742           Find out whether your system includes a PCI bus. PCI is the name of
 743           a bus system, i.e. the way the CPU talks to the other stuff inside
 744           your box.  If you say Y here, the kernel will include drivers and
 745           infrastructure code to support PCI bus devices.
 746
 747 config PCI_DOMAINS
 748         def_bool PCI
 749
 750 config PCI_SYSCALL
 751         def_bool PCI
 752
 753 config PCI_QSPAN
 754         bool "QSpan PCI"
 755         depends on !4xx && !CPM2 && 8xx
 756         select PPC_I8259
 757         help
 758           Say Y here if you have a system based on a Motorola 8xx-series
 759           embedded processor with a QSPAN PCI interface, otherwise say N.
 760
 761 config PCI_8260
 762         bool
 763         depends on PCI && 8260
 764         select PPC_INDIRECT_PCI
 765         default y
 766
 767 config 8260_PCI9
 768         bool "Enable workaround for MPC826x erratum PCI 9"
 769         depends on PCI_8260 && !8272
 770         default y
 771
 772 source "drivers/pci/pcie/Kconfig"
 773
 774 source "drivers/pci/Kconfig"
 775
 776 source "drivers/pcmcia/Kconfig"
 777
 778 source "drivers/pci/hotplug/Kconfig"
 779
 780 config HAS_RAPIDIO
 781         bool
 782         default n
 783
 784 config RAPIDIO
 785         bool "RapidIO support"
 786         depends on HAS_RAPIDIO || PCI
 787         help
 788           If you say Y here, the kernel will include drivers and
 789           infrastructure code to support RapidIO interconnect devices.
 790
 791 config FSL_RIO
 792         bool "Freescale Embedded SRIO Controller support"
 793         depends on RAPIDIO && HAS_RAPIDIO
 794         default "n"
 795         ---help---
 796           Include support for RapidIO controller on Freescale embedded
 797           processors (MPC8548, MPC8641, etc).
 798
 799 source "drivers/rapidio/Kconfig"
 800
 801 endmenu
 802
 803 config NONSTATIC_KERNEL
 804         bool
 805         default n
 806
 807 menu "Advanced setup"
 808         depends on PPC32
 809
 810 config ADVANCED_OPTIONS
 811         bool "Prompt for advanced kernel configuration options"
 812         help
 813           This option will enable prompting for a variety of advanced kernel
 814           configuration options.  These options can cause the kernel to not
 815           work if they are set incorrectly, but can be used to optimize certain
 816           aspects of kernel memory management.
 817
 818           Unless you know what you are doing, say N here.
 819
 820 comment "Default settings for advanced configuration options are used"
 821         depends on !ADVANCED_OPTIONS
 822
 823 config LOWMEM_SIZE_BOOL
 824         bool "Set maximum low memory"
 825         depends on ADVANCED_OPTIONS
 826         help
 827           This option allows you to set the maximum amount of memory which
 828           will be used as "low memory", that is, memory which the kernel can
 829           access directly, without having to set up a kernel virtual mapping.
 830           This can be useful in optimizing the layout of kernel virtual
 831           memory.
 832
 833           Say N here unless you know what you are doing.
 834
 835 config LOWMEM_SIZE
 836         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 837         default "0x30000000"
 838
 839 config LOWMEM_CAM_NUM_BOOL
 840         bool "Set number of CAMs to use to map low memory"
 841         depends on ADVANCED_OPTIONS && FSL_BOOKE
 842         help
 843           This option allows you to set the maximum number of CAM slots that
 844           will be used to map low memory.  There are a limited number of slots
 845           available and even more limited number that will fit in the L1 MMU.
 846           However, using more entries will allow mapping more low memory.  This
 847           can be useful in optimizing the layout of kernel virtual memory.
 848
 849           Say N here unless you know what you are doing.
 850
 851 config LOWMEM_CAM_NUM
 852         depends on FSL_BOOKE
 853         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 854         default 3
 855
 856 config DYNAMIC_MEMSTART
 857         bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)"
 858         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 859         select NONSTATIC_KERNEL
 860         help
 861           This option enables the kernel to be loaded at any page aligned
 862           physical address. The kernel creates a mapping from KERNELBASE to
 863           the address where the kernel is loaded. The page size here implies
 864           the TLB page size of the mapping for kernel on the particular platform.
 865           Please refer to the init code for finding the TLB page size.
 866
 867           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 868           kernel image, where the only restriction is the page aligned kernel
 869           load address. When this option is enabled, the compile time physical
 870           address CONFIG_PHYSICAL_START is ignored.
 871
 872           This option is overridden by CONFIG_RELOCATABLE
 873
 874 config RELOCATABLE
 875         bool "Build a relocatable kernel (EXPERIMENTAL)"
 876         depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && 44x
 877         select NONSTATIC_KERNEL
 878         help
 879           This builds a kernel image that is capable of running at the
 880           location the kernel is loaded at, without any alignment restrictions.
 881           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 882
 883           One use is for the kexec on panic case where the recovery kernel
 884           must live at a different physical address than the primary
 885           kernel.
 886
 887           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 888           it has been loaded at and the compile time physical addresses
 889           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 890           setting can still be useful to bootwrappers that need to know the
 891           load address of the kernel (eg. u-boot/mkimage).
 892
 893 config RELOCATABLE_PPC32
 894         def_bool y
 895         depends on PPC32 && RELOCATABLE
 896
 897 config PAGE_OFFSET_BOOL
 898         bool "Set custom page offset address"
 899         depends on ADVANCED_OPTIONS
 900         help
 901           This option allows you to set the kernel virtual address at which
 902           the kernel will map low memory.  This can be useful in optimizing
 903           the virtual memory layout of the system.
 904
 905           Say N here unless you know what you are doing.
 906
 907 config PAGE_OFFSET
 908         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 909         default "0xc0000000"
 910
 911 config KERNEL_START_BOOL
 912         bool "Set custom kernel base address"
 913         depends on ADVANCED_OPTIONS
 914         help
 915           This option allows you to set the kernel virtual address at which
 916           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 917           however there are times (like kdump) that one might not want them
 918           to be the same.
 919
 920           Say N here unless you know what you are doing.
 921
 922 config KERNEL_START
 923         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 924         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 925         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 926         default "0xc0000000"
 927
 928 config PHYSICAL_START_BOOL
 929         bool "Set physical address where the kernel is loaded"
 930         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 931         help
 932           This gives the physical address where the kernel is loaded.
 933
 934           Say N here unless you know what you are doing.
 935
 936 config PHYSICAL_START
 937         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 938         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 939         default "0x00000000"
 940
 941 config PHYSICAL_ALIGN
 942         hex
 943         default "0x04000000" if FSL_BOOKE
 944         help
 945           This value puts the alignment restrictions on physical address
 946           where kernel is loaded and run from. Kernel is compiled for an
 947           address which meets above alignment restriction.
 948
 949 config TASK_SIZE_BOOL
 950         bool "Set custom user task size"
 951         depends on ADVANCED_OPTIONS
 952         help
 953           This option allows you to set the amount of virtual address space
 954           allocated to user tasks.  This can be useful in optimizing the
 955           virtual memory layout of the system.
 956
 957           Say N here unless you know what you are doing.
 958
 959 config TASK_SIZE
 960         hex "Size of user task space" if TASK_SIZE_BOOL
 961         default "0x80000000" if PPC_PREP || PPC_8xx
 962         default "0xc0000000"
 963
 964 config CONSISTENT_SIZE_BOOL
 965         bool "Set custom consistent memory pool size"
 966         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 967         help
 968           This option allows you to set the size of the
 969           consistent memory pool.  This pool of virtual memory
 970           is used to make consistent memory allocations.
 971
 972 config CONSISTENT_SIZE
 973         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 974         default "0x00200000" if NOT_COHERENT_CACHE
 975
 976 config PIN_TLB
 977         bool "Pinned Kernel TLBs (860 ONLY)"
 978         depends on ADVANCED_OPTIONS && 8xx
 979 endmenu
 980
 981 if PPC64
 982 config RELOCATABLE
 983         bool "Build a relocatable kernel"
 984         select NONSTATIC_KERNEL
 985         help
 986           This builds a kernel image that is capable of running anywhere
 987           in the RMA (real memory area) at any 16k-aligned base address.
 988           The kernel is linked as a position-independent executable (PIE)
 989           and contains dynamic relocations which are processed early
 990           in the bootup process.
 991
 992           One use is for the kexec on panic case where the recovery kernel
 993           must live at a different physical address than the primary
 994           kernel.
 995
 996 config PAGE_OFFSET
 997         hex
 998         default "0xc000000000000000"
 999 config KERNEL_START
1000         hex
1001         default "0xc000000000000000"
1002 config PHYSICAL_START
1003         hex
1004         default "0x00000000"
1005 endif
1006
1007 source "net/Kconfig"
1008
1009 source "drivers/Kconfig"
1010
1011 source "fs/Kconfig"
1012
1013 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1014
1015 source "lib/Kconfig"
1016
1017 source "arch/powerpc/Kconfig.debug"
1018
1019 source "security/Kconfig"
1020
1021 config KEYS_COMPAT
1022         bool
1023         depends on COMPAT && KEYS
1024         default y
1025
1026 source "crypto/Kconfig"
1027
1028 config PPC_CLOCK
1029         bool
1030         default n
1031         select HAVE_CLK
1032
1033 config PPC_LIB_RHEAP
1034         bool
1035
1036 source "arch/powerpc/kvm/Kconfig"