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 TRACE_IRQFLAGS_SUPPORT
  51         bool
  52         default y
  53
  54 config LOCKDEP_SUPPORT
  55         bool
  56         default y
  57
  58 config RWSEM_GENERIC_SPINLOCK
  59         bool
  60
  61 config RWSEM_XCHGADD_ALGORITHM
  62         bool
  63         default y
  64
  65 config GENERIC_LOCKBREAK
  66         bool
  67         default y
  68         depends on SMP && PREEMPT
  69
  70 config ARCH_HAS_ILOG2_U32
  71         bool
  72         default y
  73
  74 config ARCH_HAS_ILOG2_U64
  75         bool
  76         default y if 64BIT
  77
  78 config GENERIC_HWEIGHT
  79         bool
  80         default y
  81
  82 config ARCH_HAS_DMA_SET_COHERENT_MASK
  83         bool
  84
  85 config PPC
  86         bool
  87         default y
  88         select ARCH_MIGHT_HAVE_PC_PARPORT
  89         select ARCH_MIGHT_HAVE_PC_SERIO
  90         select BINFMT_ELF
  91         select ARCH_HAS_ELF_RANDOMIZE
  92         select OF
  93         select OF_EARLY_FLATTREE
  94         select OF_RESERVED_MEM
  95         select HAVE_FTRACE_MCOUNT_RECORD
  96         select HAVE_DYNAMIC_FTRACE
  97         select HAVE_FUNCTION_TRACER
  98         select HAVE_FUNCTION_GRAPH_TRACER
  99         select SYSCTL_EXCEPTION_TRACE
 100         select ARCH_WANT_OPTIONAL_GPIOLIB
 101         select VIRT_TO_BUS if !PPC64
 102         select HAVE_IDE
 103         select HAVE_IOREMAP_PROT
 104         select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
 105         select HAVE_KPROBES
 106         select HAVE_ARCH_KGDB
 107         select HAVE_KRETPROBES
 108         select HAVE_ARCH_TRACEHOOK
 109         select HAVE_MEMBLOCK
 110         select HAVE_MEMBLOCK_NODE_MAP
 111         select HAVE_DMA_API_DEBUG
 112         select HAVE_OPROFILE
 113         select HAVE_DEBUG_KMEMLEAK
 114         select ARCH_HAS_SG_CHAIN
 115         select GENERIC_ATOMIC64 if PPC32
 116         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 117         select HAVE_PERF_EVENTS
 118         select HAVE_REGS_AND_STACK_ACCESS_API
 119         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 120         select ARCH_WANT_IPC_PARSE_VERSION
 121         select SPARSE_IRQ
 122         select IRQ_DOMAIN
 123         select GENERIC_IRQ_SHOW
 124         select GENERIC_IRQ_SHOW_LEVEL
 125         select IRQ_FORCED_THREADING
 126         select HAVE_RCU_TABLE_FREE if SMP
 127         select HAVE_SYSCALL_TRACEPOINTS
 128         select HAVE_BPF_JIT
 129         select HAVE_ARCH_JUMP_LABEL
 130         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 131         select ARCH_HAS_GCOV_PROFILE_ALL
 132         select GENERIC_SMP_IDLE_THREAD
 133         select GENERIC_CMOS_UPDATE
 134         select GENERIC_TIME_VSYSCALL_OLD
 135         select GENERIC_CLOCKEVENTS
 136         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 137         select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 138         select GENERIC_STRNCPY_FROM_USER
 139         select GENERIC_STRNLEN_USER
 140         select HAVE_MOD_ARCH_SPECIFIC
 141         select MODULES_USE_ELF_RELA
 142         select CLONE_BACKWARDS
 143         select ARCH_USE_BUILTIN_BSWAP
 144         select OLD_SIGSUSPEND
 145         select OLD_SIGACTION if PPC32
 146         select HAVE_DEBUG_STACKOVERFLOW
 147         select HAVE_IRQ_EXIT_ON_IRQ_STACK
 148         select ARCH_USE_CMPXCHG_LOCKREF if PPC64
 149         select HAVE_ARCH_AUDITSYSCALL
 150         select ARCH_SUPPORTS_ATOMIC_RMW
 151         select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
 152         select NO_BOOTMEM
 153         select HAVE_GENERIC_RCU_GUP
 154         select HAVE_PERF_EVENTS_NMI if PPC64
 155         select EDAC_SUPPORT
 156         select EDAC_ATOMIC_SCRUB
 157         select ARCH_HAS_DMA_SET_COHERENT_MASK
 158         select ARCH_HAS_DEVMEM_IS_ALLOWED
 159         select HAVE_ARCH_SECCOMP_FILTER
 160         select ARCH_HAS_UBSAN_SANITIZE_ALL
 161
 162 config GENERIC_CSUM
 163         def_bool CPU_LITTLE_ENDIAN
 164
 165 config EARLY_PRINTK
 166         bool
 167         default y
 168
 169 config PANIC_TIMEOUT
 170         int
 171         default 180
 172
 173 config COMPAT
 174         bool
 175         default y if PPC64
 176         select COMPAT_BINFMT_ELF
 177         select ARCH_WANT_OLD_COMPAT_IPC
 178         select COMPAT_OLD_SIGACTION
 179
 180 config SYSVIPC_COMPAT
 181         bool
 182         depends on COMPAT && SYSVIPC
 183         default y
 184
 185 # All PPC32s use generic nvram driver through ppc_md
 186 config GENERIC_NVRAM
 187         bool
 188         default y if PPC32
 189
 190 config SCHED_OMIT_FRAME_POINTER
 191         bool
 192         default y
 193
 194 config ARCH_MAY_HAVE_PC_FDC
 195         bool
 196         default PCI
 197
 198 config PPC_UDBG_16550
 199         bool
 200         default n
 201
 202 config GENERIC_TBSYNC
 203         bool
 204         default y if PPC32 && SMP
 205         default n
 206
 207 config AUDIT_ARCH
 208         bool
 209         default y
 210
 211 config GENERIC_BUG
 212         bool
 213         default y
 214         depends on BUG
 215
 216 config SYS_SUPPORTS_APM_EMULATION
 217         default y if PMAC_APM_EMU
 218         bool
 219
 220 config EPAPR_BOOT
 221         bool
 222         help
 223           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 224         default n
 225
 226 config DEFAULT_UIMAGE
 227         bool
 228         help
 229           Used to allow a board to specify it wants a uImage built by default
 230         default n
 231
 232 config ARCH_HIBERNATION_POSSIBLE
 233         bool
 234         default y
 235
 236 config ARCH_SUSPEND_POSSIBLE
 237         def_bool y
 238         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 239                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 240                    || 44x || 40x
 241
 242 config PPC_DCR_NATIVE
 243         bool
 244         default n
 245
 246 config PPC_DCR_MMIO
 247         bool
 248         default n
 249
 250 config PPC_DCR
 251         bool
 252         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 253         default y
 254
 255 config PPC_OF_PLATFORM_PCI
 256         bool
 257         depends on PCI
 258         depends on PPC64 # not supported on 32 bits yet
 259         default n
 260
 261 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 262         depends on PPC32 || PPC_STD_MMU_64
 263         def_bool y
 264
 265 config ARCH_SUPPORTS_UPROBES
 266         def_bool y
 267
 268 config PPC_ADV_DEBUG_REGS
 269         bool
 270         depends on 40x || BOOKE
 271         default y
 272
 273 config PPC_ADV_DEBUG_IACS
 274         int
 275         depends on PPC_ADV_DEBUG_REGS
 276         default 4 if 44x
 277         default 2
 278
 279 config PPC_ADV_DEBUG_DACS
 280         int
 281         depends on PPC_ADV_DEBUG_REGS
 282         default 2
 283
 284 config PPC_ADV_DEBUG_DVCS
 285         int
 286         depends on PPC_ADV_DEBUG_REGS
 287         default 2 if 44x
 288         default 0
 289
 290 config PPC_ADV_DEBUG_DAC_RANGE
 291         bool
 292         depends on PPC_ADV_DEBUG_REGS && 44x
 293         default y
 294
 295 config PPC_EMULATE_SSTEP
 296         bool
 297         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 298
 299 config ZONE_DMA32
 300         bool
 301         default y if PPC64
 302
 303 config PGTABLE_LEVELS
 304         int
 305         default 2 if !PPC64
 306         default 3 if PPC_64K_PAGES
 307         default 4
 308
 309 source "init/Kconfig"
 310
 311 source "kernel/Kconfig.freezer"
 312
 313 source "arch/powerpc/sysdev/Kconfig"
 314 source "arch/powerpc/platforms/Kconfig"
 315
 316 menu "Kernel options"
 317
 318 config HIGHMEM
 319         bool "High memory support"
 320         depends on PPC32
 321
 322 source kernel/Kconfig.hz
 323 source kernel/Kconfig.preempt
 324 source "fs/Kconfig.binfmt"
 325
 326 config HUGETLB_PAGE_SIZE_VARIABLE
 327         bool
 328         depends on HUGETLB_PAGE
 329         default y
 330
 331 config MATH_EMULATION
 332         bool "Math emulation"
 333         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
 334         ---help---
 335           Some PowerPC chips designed for embedded applications do not have
 336           a floating-point unit and therefore do not implement the
 337           floating-point instructions in the PowerPC instruction set.  If you
 338           say Y here, the kernel will include code to emulate a floating-point
 339           unit, which will allow programs that use floating-point
 340           instructions to run.
 341
 342           This is also useful to emulate missing (optional) instructions
 343           such as fsqrt on cores that do have an FPU but do not implement
 344           them (such as Freescale BookE).
 345
 346 choice
 347         prompt "Math emulation options"
 348         default MATH_EMULATION_FULL
 349         depends on MATH_EMULATION
 350
 351 config  MATH_EMULATION_FULL
 352         bool "Emulate all the floating point instructions"
 353         ---help---
 354           Select this option will enable the kernel to support to emulate
 355           all the floating point instructions. If your SoC doesn't have
 356           a FPU, you should select this.
 357
 358 config MATH_EMULATION_HW_UNIMPLEMENTED
 359         bool "Just emulate the FPU unimplemented instructions"
 360         ---help---
 361           Select this if you know there does have a hardware FPU on your
 362           SoC, but some floating point instructions are not implemented by that.
 363
 364 endchoice
 365
 366 config PPC_TRANSACTIONAL_MEM
 367        bool "Transactional Memory support for POWERPC"
 368        depends on PPC_BOOK3S_64
 369        depends on SMP
 370        select ALTIVEC
 371        select VSX
 372        default n
 373        ---help---
 374          Support user-mode Transactional Memory on POWERPC.
 375
 376 config IOMMU_HELPER
 377         def_bool PPC64
 378
 379 config SWIOTLB
 380         bool "SWIOTLB support"
 381         default n
 382         select IOMMU_HELPER
 383         ---help---
 384           Support for IO bounce buffering for systems without an IOMMU.
 385           This allows us to DMA to the full physical address space on
 386           platforms where the size of a physical address is larger
 387           than the bus address.  Not all platforms support this.
 388
 389 config HOTPLUG_CPU
 390         bool "Support for enabling/disabling CPUs"
 391         depends on SMP && (PPC_PSERIES || \
 392         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 393         ---help---
 394           Say Y here to be able to disable and re-enable individual
 395           CPUs at runtime on SMP machines.
 396
 397           Say N if you are unsure.
 398
 399 config ARCH_CPU_PROBE_RELEASE
 400         def_bool y
 401         depends on HOTPLUG_CPU
 402
 403 config ARCH_ENABLE_MEMORY_HOTPLUG
 404         def_bool y
 405
 406 config ARCH_HAS_WALK_MEMORY
 407         def_bool y
 408
 409 config ARCH_ENABLE_MEMORY_HOTREMOVE
 410         def_bool y
 411
 412 config PPC64_SUPPORTS_MEMORY_FAILURE
 413         bool "Add support for memory hwpoison"
 414         depends on PPC_BOOK3S_64
 415         default "y" if PPC_POWERNV
 416         select ARCH_SUPPORTS_MEMORY_FAILURE
 417
 418 config KEXEC
 419         bool "kexec system call"
 420         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP)) || PPC_BOOK3E
 421         select KEXEC_CORE
 422         help
 423           kexec is a system call that implements the ability to shutdown your
 424           current kernel, and to start another kernel.  It is like a reboot
 425           but it is independent of the system firmware.   And like a reboot
 426           you can start any kernel with it, not just Linux.
 427
 428           The name comes from the similarity to the exec system call.
 429
 430           It is an ongoing process to be certain the hardware in a machine
 431           is properly shutdown, so do not be surprised if this code does not
 432           initially work for you.  As of this writing the exact hardware
 433           interface is strongly in flux, so no good recommendation can be
 434           made.
 435
 436 config CRASH_DUMP
 437         bool "Build a kdump crash kernel"
 438         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 439         select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
 440         help
 441           Build a kernel suitable for use as a kdump capture kernel.
 442           The same kernel binary can be used as production kernel and dump
 443           capture kernel.
 444
 445 config FA_DUMP
 446         bool "Firmware-assisted dump"
 447         depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
 448         help
 449           A robust mechanism to get reliable kernel crash dump with
 450           assistance from firmware. This approach does not use kexec,
 451           instead firmware assists in booting the kdump kernel
 452           while preserving memory contents. Firmware-assisted dump
 453           is meant to be a kdump replacement offering robustness and
 454           speed not possible without system firmware assistance.
 455
 456           If unsure, say "N"
 457
 458 config IRQ_ALL_CPUS
 459         bool "Distribute interrupts on all CPUs by default"
 460         depends on SMP
 461         help
 462           This option gives the kernel permission to distribute IRQs across
 463           multiple CPUs.  Saying N here will route all IRQs to the first
 464           CPU.  Generally saying Y is safe, although some problems have been
 465           reported with SMP Power Macintoshes with this option enabled.
 466
 467 config NUMA
 468         bool "NUMA support"
 469         depends on PPC64
 470         default y if SMP && PPC_PSERIES
 471
 472 config NODES_SHIFT
 473         int
 474         default "8" if PPC64
 475         default "4"
 476         depends on NEED_MULTIPLE_NODES
 477
 478 config USE_PERCPU_NUMA_NODE_ID
 479         def_bool y
 480         depends on NUMA
 481
 482 config HAVE_MEMORYLESS_NODES
 483         def_bool y
 484         depends on NUMA
 485
 486 config ARCH_SELECT_MEMORY_MODEL
 487         def_bool y
 488         depends on PPC64
 489
 490 config ARCH_FLATMEM_ENABLE
 491         def_bool y
 492         depends on (PPC64 && !NUMA) || PPC32
 493
 494 config ARCH_SPARSEMEM_ENABLE
 495         def_bool y
 496         depends on PPC64
 497         select SPARSEMEM_VMEMMAP_ENABLE
 498
 499 config ARCH_SPARSEMEM_DEFAULT
 500         def_bool y
 501         depends on (SMP && PPC_PSERIES) || PPC_PS3
 502
 503 config SYS_SUPPORTS_HUGETLBFS
 504         bool
 505
 506 source "mm/Kconfig"
 507
 508 config ARCH_MEMORY_PROBE
 509         def_bool y
 510         depends on MEMORY_HOTPLUG
 511
 512 # Some NUMA nodes have memory ranges that span
 513 # other nodes.  Even though a pfn is valid and
 514 # between a node's start and end pfns, it may not
 515 # reside on that node.  See memmap_init_zone()
 516 # for details.
 517 config NODES_SPAN_OTHER_NODES
 518         def_bool y
 519         depends on NEED_MULTIPLE_NODES
 520
 521 config STDBINUTILS
 522         bool "Using standard binutils settings"
 523         depends on 44x
 524         default y
 525         help
 526           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 527           Note, that kernel will be able to run only those applications,
 528           which had been compiled using binutils later than 2.17.50.0.3 with
 529           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 530           the older binutils, you can patch them with a trivial patch, which
 531           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 532
 533 choice
 534         prompt "Page size"
 535         default PPC_4K_PAGES
 536         help
 537           Select the kernel logical page size. Increasing the page size
 538           will reduce software overhead at each page boundary, allow
 539           hardware prefetch mechanisms to be more effective, and allow
 540           larger dma transfers increasing IO efficiency and reducing
 541           overhead. However the utilization of memory will increase.
 542           For example, each cached file will using a multiple of the
 543           page size to hold its contents and the difference between the
 544           end of file and the end of page is wasted.
 545
 546           Some dedicated systems, such as software raid serving with
 547           accelerated calculations, have shown significant increases.
 548
 549           If you configure a 64 bit kernel for 64k pages but the
 550           processor does not support them, then the kernel will simulate
 551           them with 4k pages, loading them on demand, but with the
 552           reduced software overhead and larger internal fragmentation.
 553           For the 32 bit kernel, a large page option will not be offered
 554           unless it is supported by the configured processor.
 555
 556           If unsure, choose 4K_PAGES.
 557
 558 config PPC_4K_PAGES
 559         bool "4k page size"
 560         select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
 561
 562 config PPC_16K_PAGES
 563         bool "16k page size"
 564         depends on 44x || PPC_8xx
 565
 566 config PPC_64K_PAGES
 567         bool "64k page size"
 568         depends on !PPC_FSL_BOOK3E && (44x || PPC_STD_MMU_64 || PPC_BOOK3E_64)
 569         select HAVE_ARCH_SOFT_DIRTY if PPC_BOOK3S_64
 570
 571 config PPC_256K_PAGES
 572         bool "256k page size"
 573         depends on 44x && !STDBINUTILS
 574         help
 575           Make the page size 256k.
 576
 577           As the ELF standard only requires alignment to support page
 578           sizes up to 64k, you will need to compile all of your user
 579           space applications with a non-standard binutils settings
 580           (see the STDBINUTILS description for details).
 581
 582           Say N unless you know what you are doing.
 583
 584 endchoice
 585
 586 config FORCE_MAX_ZONEORDER
 587         int "Maximum zone order"
 588         range 9 64 if PPC64 && PPC_64K_PAGES
 589         default "9" if PPC64 && PPC_64K_PAGES
 590         range 13 64 if PPC64 && !PPC_64K_PAGES
 591         default "13" if PPC64 && !PPC_64K_PAGES
 592         range 9 64 if PPC32 && PPC_16K_PAGES
 593         default "9" if PPC32 && PPC_16K_PAGES
 594         range 7 64 if PPC32 && PPC_64K_PAGES
 595         default "7" if PPC32 && PPC_64K_PAGES
 596         range 5 64 if PPC32 && PPC_256K_PAGES
 597         default "5" if PPC32 && PPC_256K_PAGES
 598         range 11 64
 599         default "11"
 600         help
 601           The kernel memory allocator divides physically contiguous memory
 602           blocks into "zones", where each zone is a power of two number of
 603           pages.  This option selects the largest power of two that the kernel
 604           keeps in the memory allocator.  If you need to allocate very large
 605           blocks of physically contiguous memory, then you may need to
 606           increase this value.
 607
 608           This config option is actually maximum order plus one. For example,
 609           a value of 11 means that the largest free memory block is 2^10 pages.
 610
 611           The page size is not necessarily 4KB.  For example, on 64-bit
 612           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 613           this in mind when choosing a value for this option.
 614
 615 config PPC_SUBPAGE_PROT
 616         bool "Support setting protections for 4k subpages"
 617         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 618         help
 619           This option adds support for a system call to allow user programs
 620           to set access permissions (read/write, readonly, or no access)
 621           on the 4k subpages of each 64k page.
 622
 623 config PPC_COPRO_BASE
 624         bool
 625         default n
 626
 627 config SCHED_SMT
 628         bool "SMT (Hyperthreading) scheduler support"
 629         depends on PPC64 && SMP
 630         help
 631           SMT scheduler support improves the CPU scheduler's decision making
 632           when dealing with POWER5 cpus at a cost of slightly increased
 633           overhead in some places. If unsure say N here.
 634
 635 config PPC_DENORMALISATION
 636         bool "PowerPC denormalisation exception handling"
 637         depends on PPC_BOOK3S_64
 638         default "y" if PPC_POWERNV
 639         ---help---
 640           Add support for handling denormalisation of single precision
 641           values.  Useful for bare metal only.  If unsure say Y here.
 642
 643 config CMDLINE_BOOL
 644         bool "Default bootloader kernel arguments"
 645
 646 config CMDLINE
 647         string "Initial kernel command string"
 648         depends on CMDLINE_BOOL
 649         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 650         help
 651           On some platforms, there is currently no way for the boot loader to
 652           pass arguments to the kernel. For these platforms, you can supply
 653           some command-line options at build time by entering them here.  In
 654           most cases you will need to specify the root device here.
 655
 656 config CMDLINE_FORCE
 657         bool "Always use the default kernel command string"
 658         depends on CMDLINE_BOOL
 659         help
 660           Always use the default kernel command string, even if the boot
 661           loader passes other arguments to the kernel.
 662           This is useful if you cannot or don't want to change the
 663           command-line options your boot loader passes to the kernel.
 664
 665 config EXTRA_TARGETS
 666         string "Additional default image types"
 667         help
 668           List additional targets to be built by the bootwrapper here (separated
 669           by spaces).  This is useful for targets that depend of device tree
 670           files in the .dts directory.
 671
 672           Targets in this list will be build as part of the default build
 673           target, or when the user does a 'make zImage' or a
 674           'make zImage.initrd'.
 675
 676           If unsure, leave blank
 677
 678 config ARCH_WANTS_FREEZER_CONTROL
 679         def_bool y
 680         depends on ADB_PMU
 681
 682 source kernel/power/Kconfig
 683
 684 config SECCOMP
 685         bool "Enable seccomp to safely compute untrusted bytecode"
 686         depends on PROC_FS
 687         default y
 688         help
 689           This kernel feature is useful for number crunching applications
 690           that may need to compute untrusted bytecode during their
 691           execution. By using pipes or other transports made available to
 692           the process as file descriptors supporting the read/write
 693           syscalls, it's possible to isolate those applications in
 694           their own address space using seccomp. Once seccomp is
 695           enabled via /proc/<pid>/seccomp, it cannot be disabled
 696           and the task is only allowed to execute a few safe syscalls
 697           defined by each seccomp mode.
 698
 699           If unsure, say Y. Only embedded should say N here.
 700
 701 endmenu
 702
 703 config ISA_DMA_API
 704         bool
 705         default PCI
 706
 707 menu "Bus options"
 708
 709 config ISA
 710         bool "Support for ISA-bus hardware"
 711         depends on PPC_CHRP
 712         select PPC_I8259
 713         help
 714           Find out whether you have ISA slots on your motherboard.  ISA is the
 715           name of a bus system, i.e. the way the CPU talks to the other stuff
 716           inside your box.  If you have an Apple machine, say N here; if you
 717           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 718           embedded board, consult your board documentation.
 719
 720 config ZONE_DMA
 721         bool
 722         default y
 723
 724 config NEED_DMA_MAP_STATE
 725         def_bool (PPC64 || NOT_COHERENT_CACHE)
 726
 727 config NEED_SG_DMA_LENGTH
 728         def_bool y
 729
 730 config GENERIC_ISA_DMA
 731         bool
 732         depends on ISA_DMA_API
 733         default y
 734
 735 config PPC_INDIRECT_PCI
 736         bool
 737         depends on PCI
 738         default y if 40x || 44x
 739         default n
 740
 741 config EISA
 742         bool
 743
 744 config SBUS
 745         bool
 746
 747 config FSL_SOC
 748         bool
 749
 750 config FSL_PCI
 751         bool
 752         select PPC_INDIRECT_PCI
 753         select PCI_QUIRKS
 754
 755 config FSL_PMC
 756         bool
 757         default y
 758         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 759         help
 760           Freescale MPC85xx/MPC86xx power management controller support
 761           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 762
 763 config PPC4xx_CPM
 764         bool
 765         default y
 766         depends on SUSPEND && (44x || 40x)
 767         help
 768           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 769           It also enables support for two different idle states (idle-wait
 770           and idle-doze).
 771
 772 config 4xx_SOC
 773         bool
 774
 775 config FSL_LBC
 776         bool "Freescale Local Bus support"
 777         depends on FSL_SOC
 778         help
 779           Enables reporting of errors from the Freescale local bus
 780           controller.  Also contains some common code used by
 781           drivers for specific local bus peripherals.
 782
 783 config FSL_GTM
 784         bool
 785         depends on PPC_83xx || QUICC_ENGINE || CPM2
 786         help
 787           Freescale General-purpose Timers support
 788
 789 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 790 config MCA
 791         bool
 792
 793 # Platforms that what PCI turned unconditionally just do select PCI
 794 # in their config node.  Platforms that want to choose at config
 795 # time should select PPC_PCI_CHOICE
 796 config PPC_PCI_CHOICE
 797         bool
 798
 799 config PCI
 800         bool "PCI support" if PPC_PCI_CHOICE
 801         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 802                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 803         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 804         select GENERIC_PCI_IOMAP
 805         help
 806           Find out whether your system includes a PCI bus. PCI is the name of
 807           a bus system, i.e. the way the CPU talks to the other stuff inside
 808           your box.  If you say Y here, the kernel will include drivers and
 809           infrastructure code to support PCI bus devices.
 810
 811 config PCI_DOMAINS
 812         def_bool PCI
 813
 814 config PCI_SYSCALL
 815         def_bool PCI
 816
 817 config PCI_QSPAN
 818         bool "QSpan PCI"
 819         depends on !4xx && !CPM2 && 8xx
 820         select PPC_I8259
 821         help
 822           Say Y here if you have a system based on a Motorola 8xx-series
 823           embedded processor with a QSPAN PCI interface, otherwise say N.
 824
 825 config PCI_8260
 826         bool
 827         depends on PCI && 8260
 828         select PPC_INDIRECT_PCI
 829         default y
 830
 831 source "drivers/pci/pcie/Kconfig"
 832
 833 source "drivers/pci/Kconfig"
 834
 835 source "drivers/pcmcia/Kconfig"
 836
 837 source "drivers/pci/hotplug/Kconfig"
 838
 839 config HAS_RAPIDIO
 840         bool
 841         default n
 842
 843 config RAPIDIO
 844         tristate "RapidIO support"
 845         depends on HAS_RAPIDIO || PCI
 846         help
 847           If you say Y here, the kernel will include drivers and
 848           infrastructure code to support RapidIO interconnect devices.
 849
 850 config FSL_RIO
 851         bool "Freescale Embedded SRIO Controller support"
 852         depends on RAPIDIO = y && HAS_RAPIDIO
 853         default "n"
 854         ---help---
 855           Include support for RapidIO controller on Freescale embedded
 856           processors (MPC8548, MPC8641, etc).
 857
 858 source "drivers/rapidio/Kconfig"
 859
 860 endmenu
 861
 862 config NONSTATIC_KERNEL
 863         bool
 864         default n
 865
 866 menu "Advanced setup"
 867         depends on PPC32
 868
 869 config ADVANCED_OPTIONS
 870         bool "Prompt for advanced kernel configuration options"
 871         help
 872           This option will enable prompting for a variety of advanced kernel
 873           configuration options.  These options can cause the kernel to not
 874           work if they are set incorrectly, but can be used to optimize certain
 875           aspects of kernel memory management.
 876
 877           Unless you know what you are doing, say N here.
 878
 879 comment "Default settings for advanced configuration options are used"
 880         depends on !ADVANCED_OPTIONS
 881
 882 config LOWMEM_SIZE_BOOL
 883         bool "Set maximum low memory"
 884         depends on ADVANCED_OPTIONS
 885         help
 886           This option allows you to set the maximum amount of memory which
 887           will be used as "low memory", that is, memory which the kernel can
 888           access directly, without having to set up a kernel virtual mapping.
 889           This can be useful in optimizing the layout of kernel virtual
 890           memory.
 891
 892           Say N here unless you know what you are doing.
 893
 894 config LOWMEM_SIZE
 895         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 896         default "0x30000000"
 897
 898 config LOWMEM_CAM_NUM_BOOL
 899         bool "Set number of CAMs to use to map low memory"
 900         depends on ADVANCED_OPTIONS && FSL_BOOKE
 901         help
 902           This option allows you to set the maximum number of CAM slots that
 903           will be used to map low memory.  There are a limited number of slots
 904           available and even more limited number that will fit in the L1 MMU.
 905           However, using more entries will allow mapping more low memory.  This
 906           can be useful in optimizing the layout of kernel virtual memory.
 907
 908           Say N here unless you know what you are doing.
 909
 910 config LOWMEM_CAM_NUM
 911         depends on FSL_BOOKE
 912         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 913         default 3
 914
 915 config DYNAMIC_MEMSTART
 916         bool "Enable page aligned dynamic load address for kernel"
 917         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 918         select NONSTATIC_KERNEL
 919         help
 920           This option enables the kernel to be loaded at any page aligned
 921           physical address. The kernel creates a mapping from KERNELBASE to
 922           the address where the kernel is loaded. The page size here implies
 923           the TLB page size of the mapping for kernel on the particular platform.
 924           Please refer to the init code for finding the TLB page size.
 925
 926           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 927           kernel image, where the only restriction is the page aligned kernel
 928           load address. When this option is enabled, the compile time physical
 929           address CONFIG_PHYSICAL_START is ignored.
 930
 931           This option is overridden by CONFIG_RELOCATABLE
 932
 933 config RELOCATABLE
 934         bool "Build a relocatable kernel"
 935         depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
 936         select NONSTATIC_KERNEL
 937         help
 938           This builds a kernel image that is capable of running at the
 939           location the kernel is loaded at, without any alignment restrictions.
 940           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 941
 942           One use is for the kexec on panic case where the recovery kernel
 943           must live at a different physical address than the primary
 944           kernel.
 945
 946           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 947           it has been loaded at and the compile time physical addresses
 948           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 949           setting can still be useful to bootwrappers that need to know the
 950           load address of the kernel (eg. u-boot/mkimage).
 951
 952 config RELOCATABLE_PPC32
 953         def_bool y
 954         depends on PPC32 && RELOCATABLE
 955
 956 config PAGE_OFFSET_BOOL
 957         bool "Set custom page offset address"
 958         depends on ADVANCED_OPTIONS
 959         help
 960           This option allows you to set the kernel virtual address at which
 961           the kernel will map low memory.  This can be useful in optimizing
 962           the virtual memory layout of the system.
 963
 964           Say N here unless you know what you are doing.
 965
 966 config PAGE_OFFSET
 967         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 968         default "0xc0000000"
 969
 970 config KERNEL_START_BOOL
 971         bool "Set custom kernel base address"
 972         depends on ADVANCED_OPTIONS
 973         help
 974           This option allows you to set the kernel virtual address at which
 975           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 976           however there are times (like kdump) that one might not want them
 977           to be the same.
 978
 979           Say N here unless you know what you are doing.
 980
 981 config KERNEL_START
 982         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 983         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 984         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 985         default "0xc0000000"
 986
 987 config PHYSICAL_START_BOOL
 988         bool "Set physical address where the kernel is loaded"
 989         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 990         help
 991           This gives the physical address where the kernel is loaded.
 992
 993           Say N here unless you know what you are doing.
 994
 995 config PHYSICAL_START
 996         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 997         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 998         default "0x00000000"
 999
1000 config PHYSICAL_ALIGN
1001         hex
1002         default "0x04000000" if FSL_BOOKE
1003         help
1004           This value puts the alignment restrictions on physical address
1005           where kernel is loaded and run from. Kernel is compiled for an
1006           address which meets above alignment restriction.
1007
1008 config TASK_SIZE_BOOL
1009         bool "Set custom user task size"
1010         depends on ADVANCED_OPTIONS
1011         help
1012           This option allows you to set the amount of virtual address space
1013           allocated to user tasks.  This can be useful in optimizing the
1014           virtual memory layout of the system.
1015
1016           Say N here unless you know what you are doing.
1017
1018 config TASK_SIZE
1019         hex "Size of user task space" if TASK_SIZE_BOOL
1020         default "0x80000000" if PPC_8xx
1021         default "0xc0000000"
1022
1023 config CONSISTENT_SIZE_BOOL
1024         bool "Set custom consistent memory pool size"
1025         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1026         help
1027           This option allows you to set the size of the
1028           consistent memory pool.  This pool of virtual memory
1029           is used to make consistent memory allocations.
1030
1031 config CONSISTENT_SIZE
1032         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1033         default "0x00200000" if NOT_COHERENT_CACHE
1034
1035 config PIN_TLB
1036         bool "Pinned Kernel TLBs (860 ONLY)"
1037         depends on ADVANCED_OPTIONS && 8xx
1038 endmenu
1039
1040 if PPC64
1041 config RELOCATABLE
1042         bool "Build a relocatable kernel"
1043         depends on !COMPILE_TEST
1044         select NONSTATIC_KERNEL
1045         help
1046           This builds a kernel image that is capable of running anywhere
1047           in the RMA (real memory area) at any 16k-aligned base address.
1048           The kernel is linked as a position-independent executable (PIE)
1049           and contains dynamic relocations which are processed early
1050           in the bootup process.
1051
1052           One use is for the kexec on panic case where the recovery kernel
1053           must live at a different physical address than the primary
1054           kernel.
1055
1056 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1057 config PAGE_OFFSET
1058         hex
1059         default "0xc000000000000000"
1060 config KERNEL_START
1061         hex
1062         default "0xc000000000000000"
1063 config PHYSICAL_START
1064         hex
1065         default "0x00000000"
1066 endif
1067
1068 config  ARCH_RANDOM
1069         def_bool n
1070
1071 source "net/Kconfig"
1072
1073 source "drivers/Kconfig"
1074
1075 source "fs/Kconfig"
1076
1077 source "lib/Kconfig"
1078
1079 source "arch/powerpc/Kconfig.debug"
1080
1081 source "security/Kconfig"
1082
1083 config KEYS_COMPAT
1084         bool
1085         depends on COMPAT && KEYS
1086         default y
1087
1088 source "crypto/Kconfig"
1089
1090 config PPC_LIB_RHEAP
1091         bool
1092
1093 source "arch/powerpc/kvm/Kconfig"