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 ARCH_MIGHT_HAVE_PC_PARPORT
  89         select ARCH_MIGHT_HAVE_PC_SERIO
  90         select BINFMT_ELF
  91         select OF
  92         select OF_EARLY_FLATTREE
  93         select OF_RESERVED_MEM
  94         select HAVE_FTRACE_MCOUNT_RECORD
  95         select HAVE_DYNAMIC_FTRACE
  96         select HAVE_FUNCTION_TRACER
  97         select HAVE_FUNCTION_GRAPH_TRACER
  98         select SYSCTL_EXCEPTION_TRACE
  99         select ARCH_WANT_OPTIONAL_GPIOLIB
 100         select VIRT_TO_BUS if !PPC64
 101         select HAVE_IDE
 102         select HAVE_IOREMAP_PROT
 103         select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
 104         select HAVE_KPROBES
 105         select HAVE_ARCH_KGDB
 106         select HAVE_KRETPROBES
 107         select HAVE_ARCH_TRACEHOOK
 108         select HAVE_MEMBLOCK
 109         select HAVE_MEMBLOCK_NODE_MAP
 110         select HAVE_DMA_ATTRS
 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 if PPC64
 129         select HAVE_ARCH_JUMP_LABEL
 130         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 131         select GENERIC_SMP_IDLE_THREAD
 132         select GENERIC_CMOS_UPDATE
 133         select GENERIC_TIME_VSYSCALL_OLD
 134         select GENERIC_CLOCKEVENTS
 135         select GENERIC_CLOCKEVENTS_BROADCAST if SMP
 136         select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 137         select GENERIC_STRNCPY_FROM_USER
 138         select GENERIC_STRNLEN_USER
 139         select HAVE_MOD_ARCH_SPECIFIC
 140         select MODULES_USE_ELF_RELA
 141         select CLONE_BACKWARDS
 142         select ARCH_USE_BUILTIN_BSWAP
 143         select OLD_SIGSUSPEND
 144         select OLD_SIGACTION if PPC32
 145         select HAVE_DEBUG_STACKOVERFLOW
 146         select HAVE_IRQ_EXIT_ON_IRQ_STACK
 147         select ARCH_USE_CMPXCHG_LOCKREF if PPC64
 148         select HAVE_ARCH_AUDITSYSCALL
 149         select ARCH_SUPPORTS_ATOMIC_RMW
 150
 151 config GENERIC_CSUM
 152         def_bool CPU_LITTLE_ENDIAN
 153
 154 config EARLY_PRINTK
 155         bool
 156         default y
 157
 158 config PANIC_TIMEOUT
 159         int
 160         default 180
 161
 162 config COMPAT
 163         bool
 164         default y if PPC64
 165         select COMPAT_BINFMT_ELF
 166         select ARCH_WANT_OLD_COMPAT_IPC
 167         select COMPAT_OLD_SIGACTION
 168
 169 config SYSVIPC_COMPAT
 170         bool
 171         depends on COMPAT && SYSVIPC
 172         default y
 173
 174 # All PPC32s use generic nvram driver through ppc_md
 175 config GENERIC_NVRAM
 176         bool
 177         default y if PPC32
 178
 179 config SCHED_OMIT_FRAME_POINTER
 180         bool
 181         default y
 182
 183 config ARCH_MAY_HAVE_PC_FDC
 184         bool
 185         default !PPC_PSERIES || PCI
 186
 187 config PPC_OF
 188         def_bool y
 189
 190 config PPC_UDBG_16550
 191         bool
 192         default n
 193
 194 config GENERIC_TBSYNC
 195         bool
 196         default y if PPC32 && SMP
 197         default n
 198
 199 config AUDIT_ARCH
 200         bool
 201         default y
 202
 203 config GENERIC_BUG
 204         bool
 205         default y
 206         depends on BUG
 207
 208 config SYS_SUPPORTS_APM_EMULATION
 209         default y if PMAC_APM_EMU
 210         bool
 211
 212 config EPAPR_BOOT
 213         bool
 214         help
 215           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 216         default n
 217
 218 config DEFAULT_UIMAGE
 219         bool
 220         help
 221           Used to allow a board to specify it wants a uImage built by default
 222         default n
 223
 224 config ARCH_HIBERNATION_POSSIBLE
 225         bool
 226         default y
 227
 228 config ARCH_SUSPEND_POSSIBLE
 229         def_bool y
 230         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 231                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 232                    || 44x || 40x
 233
 234 config PPC_DCR_NATIVE
 235         bool
 236         default n
 237
 238 config PPC_DCR_MMIO
 239         bool
 240         default n
 241
 242 config PPC_DCR
 243         bool
 244         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 245         default y
 246
 247 config PPC_OF_PLATFORM_PCI
 248         bool
 249         depends on PCI
 250         depends on PPC64 # not supported on 32 bits yet
 251         default n
 252
 253 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 254         def_bool y
 255
 256 config ARCH_SUPPORTS_UPROBES
 257         def_bool y
 258
 259 config PPC_ADV_DEBUG_REGS
 260         bool
 261         depends on 40x || BOOKE
 262         default y
 263
 264 config PPC_ADV_DEBUG_IACS
 265         int
 266         depends on PPC_ADV_DEBUG_REGS
 267         default 4 if 44x
 268         default 2
 269
 270 config PPC_ADV_DEBUG_DACS
 271         int
 272         depends on PPC_ADV_DEBUG_REGS
 273         default 2
 274
 275 config PPC_ADV_DEBUG_DVCS
 276         int
 277         depends on PPC_ADV_DEBUG_REGS
 278         default 2 if 44x
 279         default 0
 280
 281 config PPC_ADV_DEBUG_DAC_RANGE
 282         bool
 283         depends on PPC_ADV_DEBUG_REGS && 44x
 284         default y
 285
 286 config PPC_EMULATE_SSTEP
 287         bool
 288         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 289
 290 source "init/Kconfig"
 291
 292 source "kernel/Kconfig.freezer"
 293
 294 source "arch/powerpc/sysdev/Kconfig"
 295 source "arch/powerpc/platforms/Kconfig"
 296
 297 menu "Kernel options"
 298
 299 config HIGHMEM
 300         bool "High memory support"
 301         depends on PPC32
 302
 303 source kernel/Kconfig.hz
 304 source kernel/Kconfig.preempt
 305 source "fs/Kconfig.binfmt"
 306
 307 config HUGETLB_PAGE_SIZE_VARIABLE
 308         bool
 309         depends on HUGETLB_PAGE
 310         default y
 311
 312 config MATH_EMULATION
 313         bool "Math emulation"
 314         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
 315         ---help---
 316           Some PowerPC chips designed for embedded applications do not have
 317           a floating-point unit and therefore do not implement the
 318           floating-point instructions in the PowerPC instruction set.  If you
 319           say Y here, the kernel will include code to emulate a floating-point
 320           unit, which will allow programs that use floating-point
 321           instructions to run.
 322
 323           This is also useful to emulate missing (optional) instructions
 324           such as fsqrt on cores that do have an FPU but do not implement
 325           them (such as Freescale BookE).
 326
 327 choice
 328         prompt "Math emulation options"
 329         default MATH_EMULATION_FULL
 330         depends on MATH_EMULATION
 331
 332 config  MATH_EMULATION_FULL
 333         bool "Emulate all the floating point instructions"
 334         ---help---
 335           Select this option will enable the kernel to support to emulate
 336           all the floating point instructions. If your SoC doesn't have
 337           a FPU, you should select this.
 338
 339 config MATH_EMULATION_HW_UNIMPLEMENTED
 340         bool "Just emulate the FPU unimplemented instructions"
 341         ---help---
 342           Select this if you know there does have a hardware FPU on your
 343           SoC, but some floating point instructions are not implemented by that.
 344
 345 endchoice
 346
 347 config PPC_TRANSACTIONAL_MEM
 348        bool "Transactional Memory support for POWERPC"
 349        depends on PPC_BOOK3S_64
 350        depends on SMP
 351        select ALTIVEC
 352        select VSX
 353        default n
 354        ---help---
 355          Support user-mode Transactional Memory on POWERPC.
 356
 357 config IOMMU_HELPER
 358         def_bool PPC64
 359
 360 config SWIOTLB
 361         bool "SWIOTLB support"
 362         default n
 363         select IOMMU_HELPER
 364         ---help---
 365           Support for IO bounce buffering for systems without an IOMMU.
 366           This allows us to DMA to the full physical address space on
 367           platforms where the size of a physical address is larger
 368           than the bus address.  Not all platforms support this.
 369
 370 config HOTPLUG_CPU
 371         bool "Support for enabling/disabling CPUs"
 372         depends on SMP && (PPC_PSERIES || \
 373         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 374         ---help---
 375           Say Y here to be able to disable and re-enable individual
 376           CPUs at runtime on SMP machines.
 377
 378           Say N if you are unsure.
 379
 380 config ARCH_CPU_PROBE_RELEASE
 381         def_bool y
 382         depends on HOTPLUG_CPU
 383
 384 config ARCH_ENABLE_MEMORY_HOTPLUG
 385         def_bool y
 386
 387 config ARCH_HAS_WALK_MEMORY
 388         def_bool y
 389
 390 config ARCH_ENABLE_MEMORY_HOTREMOVE
 391         def_bool y
 392
 393 config PPC64_SUPPORTS_MEMORY_FAILURE
 394         bool "Add support for memory hwpoison"
 395         depends on PPC_BOOK3S_64
 396         default "y" if PPC_POWERNV
 397         select ARCH_SUPPORTS_MEMORY_FAILURE
 398
 399 config KEXEC
 400         bool "kexec system call"
 401         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 402         select CRYPTO
 403         select CRYPTO_SHA256
 404         help
 405           kexec is a system call that implements the ability to shutdown your
 406           current kernel, and to start another kernel.  It is like a reboot
 407           but it is independent of the system firmware.   And like a reboot
 408           you can start any kernel with it, not just Linux.
 409
 410           The name comes from the similarity to the exec system call.
 411
 412           It is an ongoing process to be certain the hardware in a machine
 413           is properly shutdown, so do not be surprised if this code does not
 414           initially work for you.  As of this writing the exact hardware
 415           interface is strongly in flux, so no good recommendation can be
 416           made.
 417
 418 config CRASH_DUMP
 419         bool "Build a kdump crash kernel"
 420         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 421         select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
 422         help
 423           Build a kernel suitable for use as a kdump capture kernel.
 424           The same kernel binary can be used as production kernel and dump
 425           capture kernel.
 426
 427 config FA_DUMP
 428         bool "Firmware-assisted dump"
 429         depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
 430         help
 431           A robust mechanism to get reliable kernel crash dump with
 432           assistance from firmware. This approach does not use kexec,
 433           instead firmware assists in booting the kdump kernel
 434           while preserving memory contents. Firmware-assisted dump
 435           is meant to be a kdump replacement offering robustness and
 436           speed not possible without system firmware assistance.
 437
 438           If unsure, say "N"
 439
 440 config IRQ_ALL_CPUS
 441         bool "Distribute interrupts on all CPUs by default"
 442         depends on SMP
 443         help
 444           This option gives the kernel permission to distribute IRQs across
 445           multiple CPUs.  Saying N here will route all IRQs to the first
 446           CPU.  Generally saying Y is safe, although some problems have been
 447           reported with SMP Power Macintoshes with this option enabled.
 448
 449 config NUMA
 450         bool "NUMA support"
 451         depends on PPC64
 452         default y if SMP && PPC_PSERIES
 453
 454 config NODES_SHIFT
 455         int
 456         default "8" if PPC64
 457         default "4"
 458         depends on NEED_MULTIPLE_NODES
 459
 460 config USE_PERCPU_NUMA_NODE_ID
 461         def_bool y
 462         depends on NUMA
 463
 464 config HAVE_MEMORYLESS_NODES
 465         def_bool y
 466         depends on NUMA
 467
 468 config ARCH_SELECT_MEMORY_MODEL
 469         def_bool y
 470         depends on PPC64
 471
 472 config ARCH_FLATMEM_ENABLE
 473         def_bool y
 474         depends on (PPC64 && !NUMA) || PPC32
 475
 476 config ARCH_SPARSEMEM_ENABLE
 477         def_bool y
 478         depends on PPC64
 479         select SPARSEMEM_VMEMMAP_ENABLE
 480
 481 config ARCH_SPARSEMEM_DEFAULT
 482         def_bool y
 483         depends on (SMP && PPC_PSERIES) || PPC_PS3
 484
 485 config SYS_SUPPORTS_HUGETLBFS
 486         bool
 487
 488 source "mm/Kconfig"
 489
 490 config ARCH_MEMORY_PROBE
 491         def_bool y
 492         depends on MEMORY_HOTPLUG
 493
 494 # Some NUMA nodes have memory ranges that span
 495 # other nodes.  Even though a pfn is valid and
 496 # between a node's start and end pfns, it may not
 497 # reside on that node.  See memmap_init_zone()
 498 # for details.
 499 config NODES_SPAN_OTHER_NODES
 500         def_bool y
 501         depends on NEED_MULTIPLE_NODES
 502
 503 config PPC_HAS_HASH_64K
 504         bool
 505         depends on PPC64
 506         default n
 507
 508 config STDBINUTILS
 509         bool "Using standard binutils settings"
 510         depends on 44x
 511         default y
 512         help
 513           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 514           Note, that kernel will be able to run only those applications,
 515           which had been compiled using binutils later than 2.17.50.0.3 with
 516           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 517           the older binutils, you can patch them with a trivial patch, which
 518           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 519
 520 choice
 521         prompt "Page size"
 522         default PPC_4K_PAGES
 523         help
 524           Select the kernel logical page size. Increasing the page size
 525           will reduce software overhead at each page boundary, allow
 526           hardware prefetch mechanisms to be more effective, and allow
 527           larger dma transfers increasing IO efficiency and reducing
 528           overhead. However the utilization of memory will increase.
 529           For example, each cached file will using a multiple of the
 530           page size to hold its contents and the difference between the
 531           end of file and the end of page is wasted.
 532
 533           Some dedicated systems, such as software raid serving with
 534           accelerated calculations, have shown significant increases.
 535
 536           If you configure a 64 bit kernel for 64k pages but the
 537           processor does not support them, then the kernel will simulate
 538           them with 4k pages, loading them on demand, but with the
 539           reduced software overhead and larger internal fragmentation.
 540           For the 32 bit kernel, a large page option will not be offered
 541           unless it is supported by the configured processor.
 542
 543           If unsure, choose 4K_PAGES.
 544
 545 config PPC_4K_PAGES
 546         bool "4k page size"
 547
 548 config PPC_16K_PAGES
 549         bool "16k page size" if 44x
 550
 551 config PPC_64K_PAGES
 552         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 553         depends on !PPC_FSL_BOOK3E
 554         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 555
 556 config PPC_256K_PAGES
 557         bool "256k page size" if 44x
 558         depends on !STDBINUTILS
 559         help
 560           Make the page size 256k.
 561
 562           As the ELF standard only requires alignment to support page
 563           sizes up to 64k, you will need to compile all of your user
 564           space applications with a non-standard binutils settings
 565           (see the STDBINUTILS description for details).
 566
 567           Say N unless you know what you are doing.
 568
 569 endchoice
 570
 571 config FORCE_MAX_ZONEORDER
 572         int "Maximum zone order"
 573         range 9 64 if PPC64 && PPC_64K_PAGES
 574         default "9" if PPC64 && PPC_64K_PAGES
 575         range 13 64 if PPC64 && !PPC_64K_PAGES
 576         default "13" if PPC64 && !PPC_64K_PAGES
 577         range 9 64 if PPC32 && PPC_16K_PAGES
 578         default "9" if PPC32 && PPC_16K_PAGES
 579         range 7 64 if PPC32 && PPC_64K_PAGES
 580         default "7" if PPC32 && PPC_64K_PAGES
 581         range 5 64 if PPC32 && PPC_256K_PAGES
 582         default "5" if PPC32 && PPC_256K_PAGES
 583         range 11 64
 584         default "11"
 585         help
 586           The kernel memory allocator divides physically contiguous memory
 587           blocks into "zones", where each zone is a power of two number of
 588           pages.  This option selects the largest power of two that the kernel
 589           keeps in the memory allocator.  If you need to allocate very large
 590           blocks of physically contiguous memory, then you may need to
 591           increase this value.
 592
 593           This config option is actually maximum order plus one. For example,
 594           a value of 11 means that the largest free memory block is 2^10 pages.
 595
 596           The page size is not necessarily 4KB.  For example, on 64-bit
 597           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 598           this in mind when choosing a value for this option.
 599
 600 config PPC_SUBPAGE_PROT
 601         bool "Support setting protections for 4k subpages"
 602         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 603         help
 604           This option adds support for a system call to allow user programs
 605           to set access permissions (read/write, readonly, or no access)
 606           on the 4k subpages of each 64k page.
 607
 608 config SCHED_SMT
 609         bool "SMT (Hyperthreading) scheduler support"
 610         depends on PPC64 && SMP
 611         help
 612           SMT scheduler support improves the CPU scheduler's decision making
 613           when dealing with POWER5 cpus at a cost of slightly increased
 614           overhead in some places. If unsure say N here.
 615
 616 config PPC_DENORMALISATION
 617         bool "PowerPC denormalisation exception handling"
 618         depends on PPC_BOOK3S_64
 619         default "y" if PPC_POWERNV
 620         ---help---
 621           Add support for handling denormalisation of single precision
 622           values.  Useful for bare metal only.  If unsure say Y here.
 623
 624 config CMDLINE_BOOL
 625         bool "Default bootloader kernel arguments"
 626
 627 config CMDLINE
 628         string "Initial kernel command string"
 629         depends on CMDLINE_BOOL
 630         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 631         help
 632           On some platforms, there is currently no way for the boot loader to
 633           pass arguments to the kernel. For these platforms, you can supply
 634           some command-line options at build time by entering them here.  In
 635           most cases you will need to specify the root device here.
 636
 637 config CMDLINE_FORCE
 638         bool "Always use the default kernel command string"
 639         depends on CMDLINE_BOOL
 640         help
 641           Always use the default kernel command string, even if the boot
 642           loader passes other arguments to the kernel.
 643           This is useful if you cannot or don't want to change the
 644           command-line options your boot loader passes to the kernel.
 645
 646 config EXTRA_TARGETS
 647         string "Additional default image types"
 648         help
 649           List additional targets to be built by the bootwrapper here (separated
 650           by spaces).  This is useful for targets that depend of device tree
 651           files in the .dts directory.
 652
 653           Targets in this list will be build as part of the default build
 654           target, or when the user does a 'make zImage' or a
 655           'make zImage.initrd'.
 656
 657           If unsure, leave blank
 658
 659 config ARCH_WANTS_FREEZER_CONTROL
 660         def_bool y
 661         depends on ADB_PMU
 662
 663 source kernel/power/Kconfig
 664
 665 config SECCOMP
 666         bool "Enable seccomp to safely compute untrusted bytecode"
 667         depends on PROC_FS
 668         default y
 669         help
 670           This kernel feature is useful for number crunching applications
 671           that may need to compute untrusted bytecode during their
 672           execution. By using pipes or other transports made available to
 673           the process as file descriptors supporting the read/write
 674           syscalls, it's possible to isolate those applications in
 675           their own address space using seccomp. Once seccomp is
 676           enabled via /proc/<pid>/seccomp, it cannot be disabled
 677           and the task is only allowed to execute a few safe syscalls
 678           defined by each seccomp mode.
 679
 680           If unsure, say Y. Only embedded should say N here.
 681
 682 endmenu
 683
 684 config ISA_DMA_API
 685         bool
 686         default PCI
 687
 688 menu "Bus options"
 689
 690 config ISA
 691         bool "Support for ISA-bus hardware"
 692         depends on PPC_CHRP
 693         select PPC_I8259
 694         help
 695           Find out whether you have ISA slots on your motherboard.  ISA is the
 696           name of a bus system, i.e. the way the CPU talks to the other stuff
 697           inside your box.  If you have an Apple machine, say N here; if you
 698           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 699           embedded board, consult your board documentation.
 700
 701 config ZONE_DMA
 702         bool
 703         default y
 704
 705 config NEED_DMA_MAP_STATE
 706         def_bool (PPC64 || NOT_COHERENT_CACHE)
 707
 708 config NEED_SG_DMA_LENGTH
 709         def_bool y
 710
 711 config GENERIC_ISA_DMA
 712         bool
 713         depends on ISA_DMA_API
 714         default y
 715
 716 config PPC_INDIRECT_PCI
 717         bool
 718         depends on PCI
 719         default y if 40x || 44x
 720         default n
 721
 722 config EISA
 723         bool
 724
 725 config SBUS
 726         bool
 727
 728 config FSL_SOC
 729         bool
 730
 731 config FSL_PCI
 732         bool
 733         select PPC_INDIRECT_PCI
 734         select PCI_QUIRKS
 735
 736 config FSL_PMC
 737         bool
 738         default y
 739         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 740         help
 741           Freescale MPC85xx/MPC86xx power management controller support
 742           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 743
 744 config PPC4xx_CPM
 745         bool
 746         default y
 747         depends on SUSPEND && (44x || 40x)
 748         help
 749           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 750           It also enables support for two different idle states (idle-wait
 751           and idle-doze).
 752
 753 config 4xx_SOC
 754         bool
 755
 756 config FSL_LBC
 757         bool "Freescale Local Bus support"
 758         depends on FSL_SOC
 759         help
 760           Enables reporting of errors from the Freescale local bus
 761           controller.  Also contains some common code used by
 762           drivers for specific local bus peripherals.
 763
 764 config FSL_GTM
 765         bool
 766         depends on PPC_83xx || QUICC_ENGINE || CPM2
 767         help
 768           Freescale General-purpose Timers support
 769
 770 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 771 config MCA
 772         bool
 773
 774 # Platforms that what PCI turned unconditionally just do select PCI
 775 # in their config node.  Platforms that want to choose at config
 776 # time should select PPC_PCI_CHOICE
 777 config PPC_PCI_CHOICE
 778         bool
 779
 780 config PCI
 781         bool "PCI support" if PPC_PCI_CHOICE
 782         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 783                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 784         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 785         select GENERIC_PCI_IOMAP
 786         help
 787           Find out whether your system includes a PCI bus. PCI is the name of
 788           a bus system, i.e. the way the CPU talks to the other stuff inside
 789           your box.  If you say Y here, the kernel will include drivers and
 790           infrastructure code to support PCI bus devices.
 791
 792 config PCI_DOMAINS
 793         def_bool PCI
 794
 795 config PCI_SYSCALL
 796         def_bool PCI
 797
 798 config PCI_QSPAN
 799         bool "QSpan PCI"
 800         depends on !4xx && !CPM2 && 8xx
 801         select PPC_I8259
 802         help
 803           Say Y here if you have a system based on a Motorola 8xx-series
 804           embedded processor with a QSPAN PCI interface, otherwise say N.
 805
 806 config PCI_8260
 807         bool
 808         depends on PCI && 8260
 809         select PPC_INDIRECT_PCI
 810         default y
 811
 812 source "drivers/pci/pcie/Kconfig"
 813
 814 source "drivers/pci/Kconfig"
 815
 816 source "drivers/pcmcia/Kconfig"
 817
 818 source "drivers/pci/hotplug/Kconfig"
 819
 820 config HAS_RAPIDIO
 821         bool
 822         default n
 823
 824 config RAPIDIO
 825         tristate "RapidIO support"
 826         depends on HAS_RAPIDIO || PCI
 827         help
 828           If you say Y here, the kernel will include drivers and
 829           infrastructure code to support RapidIO interconnect devices.
 830
 831 config FSL_RIO
 832         bool "Freescale Embedded SRIO Controller support"
 833         depends on RAPIDIO = y && HAS_RAPIDIO
 834         default "n"
 835         ---help---
 836           Include support for RapidIO controller on Freescale embedded
 837           processors (MPC8548, MPC8641, etc).
 838
 839 source "drivers/rapidio/Kconfig"
 840
 841 endmenu
 842
 843 config NONSTATIC_KERNEL
 844         bool
 845         default n
 846
 847 menu "Advanced setup"
 848         depends on PPC32
 849
 850 config ADVANCED_OPTIONS
 851         bool "Prompt for advanced kernel configuration options"
 852         help
 853           This option will enable prompting for a variety of advanced kernel
 854           configuration options.  These options can cause the kernel to not
 855           work if they are set incorrectly, but can be used to optimize certain
 856           aspects of kernel memory management.
 857
 858           Unless you know what you are doing, say N here.
 859
 860 comment "Default settings for advanced configuration options are used"
 861         depends on !ADVANCED_OPTIONS
 862
 863 config LOWMEM_SIZE_BOOL
 864         bool "Set maximum low memory"
 865         depends on ADVANCED_OPTIONS
 866         help
 867           This option allows you to set the maximum amount of memory which
 868           will be used as "low memory", that is, memory which the kernel can
 869           access directly, without having to set up a kernel virtual mapping.
 870           This can be useful in optimizing the layout of kernel virtual
 871           memory.
 872
 873           Say N here unless you know what you are doing.
 874
 875 config LOWMEM_SIZE
 876         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 877         default "0x30000000"
 878
 879 config LOWMEM_CAM_NUM_BOOL
 880         bool "Set number of CAMs to use to map low memory"
 881         depends on ADVANCED_OPTIONS && FSL_BOOKE
 882         help
 883           This option allows you to set the maximum number of CAM slots that
 884           will be used to map low memory.  There are a limited number of slots
 885           available and even more limited number that will fit in the L1 MMU.
 886           However, using more entries will allow mapping more low memory.  This
 887           can be useful in optimizing the layout of kernel virtual memory.
 888
 889           Say N here unless you know what you are doing.
 890
 891 config LOWMEM_CAM_NUM
 892         depends on FSL_BOOKE
 893         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 894         default 3
 895
 896 config DYNAMIC_MEMSTART
 897         bool "Enable page aligned dynamic load address for kernel"
 898         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 899         select NONSTATIC_KERNEL
 900         help
 901           This option enables the kernel to be loaded at any page aligned
 902           physical address. The kernel creates a mapping from KERNELBASE to
 903           the address where the kernel is loaded. The page size here implies
 904           the TLB page size of the mapping for kernel on the particular platform.
 905           Please refer to the init code for finding the TLB page size.
 906
 907           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 908           kernel image, where the only restriction is the page aligned kernel
 909           load address. When this option is enabled, the compile time physical
 910           address CONFIG_PHYSICAL_START is ignored.
 911
 912           This option is overridden by CONFIG_RELOCATABLE
 913
 914 config RELOCATABLE
 915         bool "Build a relocatable kernel"
 916         depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
 917         select NONSTATIC_KERNEL
 918         help
 919           This builds a kernel image that is capable of running at the
 920           location the kernel is loaded at, without any alignment restrictions.
 921           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 922
 923           One use is for the kexec on panic case where the recovery kernel
 924           must live at a different physical address than the primary
 925           kernel.
 926
 927           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 928           it has been loaded at and the compile time physical addresses
 929           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 930           setting can still be useful to bootwrappers that need to know the
 931           load address of the kernel (eg. u-boot/mkimage).
 932
 933 config RELOCATABLE_PPC32
 934         def_bool y
 935         depends on PPC32 && RELOCATABLE
 936
 937 config PAGE_OFFSET_BOOL
 938         bool "Set custom page offset address"
 939         depends on ADVANCED_OPTIONS
 940         help
 941           This option allows you to set the kernel virtual address at which
 942           the kernel will map low memory.  This can be useful in optimizing
 943           the virtual memory layout of the system.
 944
 945           Say N here unless you know what you are doing.
 946
 947 config PAGE_OFFSET
 948         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 949         default "0xc0000000"
 950
 951 config KERNEL_START_BOOL
 952         bool "Set custom kernel base address"
 953         depends on ADVANCED_OPTIONS
 954         help
 955           This option allows you to set the kernel virtual address at which
 956           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 957           however there are times (like kdump) that one might not want them
 958           to be the same.
 959
 960           Say N here unless you know what you are doing.
 961
 962 config KERNEL_START
 963         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 964         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 965         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 966         default "0xc0000000"
 967
 968 config PHYSICAL_START_BOOL
 969         bool "Set physical address where the kernel is loaded"
 970         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 971         help
 972           This gives the physical address where the kernel is loaded.
 973
 974           Say N here unless you know what you are doing.
 975
 976 config PHYSICAL_START
 977         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 978         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 979         default "0x00000000"
 980
 981 config PHYSICAL_ALIGN
 982         hex
 983         default "0x04000000" if FSL_BOOKE
 984         help
 985           This value puts the alignment restrictions on physical address
 986           where kernel is loaded and run from. Kernel is compiled for an
 987           address which meets above alignment restriction.
 988
 989 config TASK_SIZE_BOOL
 990         bool "Set custom user task size"
 991         depends on ADVANCED_OPTIONS
 992         help
 993           This option allows you to set the amount of virtual address space
 994           allocated to user tasks.  This can be useful in optimizing the
 995           virtual memory layout of the system.
 996
 997           Say N here unless you know what you are doing.
 998
 999 config TASK_SIZE
1000         hex "Size of user task space" if TASK_SIZE_BOOL
1001         default "0x80000000" if PPC_8xx
1002         default "0xc0000000"
1003
1004 config CONSISTENT_SIZE_BOOL
1005         bool "Set custom consistent memory pool size"
1006         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1007         help
1008           This option allows you to set the size of the
1009           consistent memory pool.  This pool of virtual memory
1010           is used to make consistent memory allocations.
1011
1012 config CONSISTENT_SIZE
1013         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1014         default "0x00200000" if NOT_COHERENT_CACHE
1015
1016 config PIN_TLB
1017         bool "Pinned Kernel TLBs (860 ONLY)"
1018         depends on ADVANCED_OPTIONS && 8xx
1019 endmenu
1020
1021 if PPC64
1022 config RELOCATABLE
1023         bool "Build a relocatable kernel"
1024         depends on !COMPILE_TEST
1025         select NONSTATIC_KERNEL
1026         help
1027           This builds a kernel image that is capable of running anywhere
1028           in the RMA (real memory area) at any 16k-aligned base address.
1029           The kernel is linked as a position-independent executable (PIE)
1030           and contains dynamic relocations which are processed early
1031           in the bootup process.
1032
1033           One use is for the kexec on panic case where the recovery kernel
1034           must live at a different physical address than the primary
1035           kernel.
1036
1037 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1038 config PAGE_OFFSET
1039         hex
1040         default "0xc000000000000000"
1041 config KERNEL_START
1042         hex
1043         default "0xc000000000000000"
1044 config PHYSICAL_START
1045         hex
1046         default "0x00000000"
1047 endif
1048
1049 config  ARCH_RANDOM
1050         def_bool n
1051
1052 source "net/Kconfig"
1053
1054 source "drivers/Kconfig"
1055
1056 source "fs/Kconfig"
1057
1058 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1059
1060 source "lib/Kconfig"
1061
1062 source "arch/powerpc/Kconfig.debug"
1063
1064 source "security/Kconfig"
1065
1066 config KEYS_COMPAT
1067         bool
1068         depends on COMPAT && KEYS
1069         default y
1070
1071 source "crypto/Kconfig"
1072
1073 config PPC_LIB_RHEAP
1074         bool
1075
1076 source "arch/powerpc/kvm/Kconfig"