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         select DCACHE_WORD_ACCESS if PPC64 && CPU_LITTLE_ENDIAN
 151         select NO_BOOTMEM
 152
 153 config GENERIC_CSUM
 154         def_bool CPU_LITTLE_ENDIAN
 155
 156 config EARLY_PRINTK
 157         bool
 158         default y
 159
 160 config PANIC_TIMEOUT
 161         int
 162         default 180
 163
 164 config COMPAT
 165         bool
 166         default y if PPC64
 167         select COMPAT_BINFMT_ELF
 168         select ARCH_WANT_OLD_COMPAT_IPC
 169         select COMPAT_OLD_SIGACTION
 170
 171 config SYSVIPC_COMPAT
 172         bool
 173         depends on COMPAT && SYSVIPC
 174         default y
 175
 176 # All PPC32s use generic nvram driver through ppc_md
 177 config GENERIC_NVRAM
 178         bool
 179         default y if PPC32
 180
 181 config SCHED_OMIT_FRAME_POINTER
 182         bool
 183         default y
 184
 185 config ARCH_MAY_HAVE_PC_FDC
 186         bool
 187         default PCI
 188
 189 config PPC_OF
 190         def_bool y
 191
 192 config PPC_UDBG_16550
 193         bool
 194         default n
 195
 196 config GENERIC_TBSYNC
 197         bool
 198         default y if PPC32 && SMP
 199         default n
 200
 201 config AUDIT_ARCH
 202         bool
 203         default y
 204
 205 config GENERIC_BUG
 206         bool
 207         default y
 208         depends on BUG
 209
 210 config SYS_SUPPORTS_APM_EMULATION
 211         default y if PMAC_APM_EMU
 212         bool
 213
 214 config EPAPR_BOOT
 215         bool
 216         help
 217           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 218         default n
 219
 220 config DEFAULT_UIMAGE
 221         bool
 222         help
 223           Used to allow a board to specify it wants a uImage built by default
 224         default n
 225
 226 config ARCH_HIBERNATION_POSSIBLE
 227         bool
 228         default y
 229
 230 config ARCH_SUSPEND_POSSIBLE
 231         def_bool y
 232         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 233                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 234                    || 44x || 40x
 235
 236 config PPC_DCR_NATIVE
 237         bool
 238         default n
 239
 240 config PPC_DCR_MMIO
 241         bool
 242         default n
 243
 244 config PPC_DCR
 245         bool
 246         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 247         default y
 248
 249 config PPC_OF_PLATFORM_PCI
 250         bool
 251         depends on PCI
 252         depends on PPC64 # not supported on 32 bits yet
 253         default n
 254
 255 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 256         def_bool y
 257
 258 config ARCH_SUPPORTS_UPROBES
 259         def_bool y
 260
 261 config PPC_ADV_DEBUG_REGS
 262         bool
 263         depends on 40x || BOOKE
 264         default y
 265
 266 config PPC_ADV_DEBUG_IACS
 267         int
 268         depends on PPC_ADV_DEBUG_REGS
 269         default 4 if 44x
 270         default 2
 271
 272 config PPC_ADV_DEBUG_DACS
 273         int
 274         depends on PPC_ADV_DEBUG_REGS
 275         default 2
 276
 277 config PPC_ADV_DEBUG_DVCS
 278         int
 279         depends on PPC_ADV_DEBUG_REGS
 280         default 2 if 44x
 281         default 0
 282
 283 config PPC_ADV_DEBUG_DAC_RANGE
 284         bool
 285         depends on PPC_ADV_DEBUG_REGS && 44x
 286         default y
 287
 288 config PPC_EMULATE_SSTEP
 289         bool
 290         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 291
 292 config ZONE_DMA32
 293         bool
 294         default y if PPC64
 295
 296 source "init/Kconfig"
 297
 298 source "kernel/Kconfig.freezer"
 299
 300 source "arch/powerpc/sysdev/Kconfig"
 301 source "arch/powerpc/platforms/Kconfig"
 302
 303 menu "Kernel options"
 304
 305 config HIGHMEM
 306         bool "High memory support"
 307         depends on PPC32
 308
 309 source kernel/Kconfig.hz
 310 source kernel/Kconfig.preempt
 311 source "fs/Kconfig.binfmt"
 312
 313 config HUGETLB_PAGE_SIZE_VARIABLE
 314         bool
 315         depends on HUGETLB_PAGE
 316         default y
 317
 318 config MATH_EMULATION
 319         bool "Math emulation"
 320         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
 321         ---help---
 322           Some PowerPC chips designed for embedded applications do not have
 323           a floating-point unit and therefore do not implement the
 324           floating-point instructions in the PowerPC instruction set.  If you
 325           say Y here, the kernel will include code to emulate a floating-point
 326           unit, which will allow programs that use floating-point
 327           instructions to run.
 328
 329           This is also useful to emulate missing (optional) instructions
 330           such as fsqrt on cores that do have an FPU but do not implement
 331           them (such as Freescale BookE).
 332
 333 choice
 334         prompt "Math emulation options"
 335         default MATH_EMULATION_FULL
 336         depends on MATH_EMULATION
 337
 338 config  MATH_EMULATION_FULL
 339         bool "Emulate all the floating point instructions"
 340         ---help---
 341           Select this option will enable the kernel to support to emulate
 342           all the floating point instructions. If your SoC doesn't have
 343           a FPU, you should select this.
 344
 345 config MATH_EMULATION_HW_UNIMPLEMENTED
 346         bool "Just emulate the FPU unimplemented instructions"
 347         ---help---
 348           Select this if you know there does have a hardware FPU on your
 349           SoC, but some floating point instructions are not implemented by that.
 350
 351 endchoice
 352
 353 config PPC_TRANSACTIONAL_MEM
 354        bool "Transactional Memory support for POWERPC"
 355        depends on PPC_BOOK3S_64
 356        depends on SMP
 357        select ALTIVEC
 358        select VSX
 359        default n
 360        ---help---
 361          Support user-mode Transactional Memory on POWERPC.
 362
 363 config IOMMU_HELPER
 364         def_bool PPC64
 365
 366 config SWIOTLB
 367         bool "SWIOTLB support"
 368         default n
 369         select IOMMU_HELPER
 370         ---help---
 371           Support for IO bounce buffering for systems without an IOMMU.
 372           This allows us to DMA to the full physical address space on
 373           platforms where the size of a physical address is larger
 374           than the bus address.  Not all platforms support this.
 375
 376 config HOTPLUG_CPU
 377         bool "Support for enabling/disabling CPUs"
 378         depends on SMP && (PPC_PSERIES || \
 379         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 380         ---help---
 381           Say Y here to be able to disable and re-enable individual
 382           CPUs at runtime on SMP machines.
 383
 384           Say N if you are unsure.
 385
 386 config ARCH_CPU_PROBE_RELEASE
 387         def_bool y
 388         depends on HOTPLUG_CPU
 389
 390 config ARCH_ENABLE_MEMORY_HOTPLUG
 391         def_bool y
 392
 393 config ARCH_HAS_WALK_MEMORY
 394         def_bool y
 395
 396 config ARCH_ENABLE_MEMORY_HOTREMOVE
 397         def_bool y
 398
 399 config PPC64_SUPPORTS_MEMORY_FAILURE
 400         bool "Add support for memory hwpoison"
 401         depends on PPC_BOOK3S_64
 402         default "y" if PPC_POWERNV
 403         select ARCH_SUPPORTS_MEMORY_FAILURE
 404
 405 config KEXEC
 406         bool "kexec system call"
 407         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 408         help
 409           kexec is a system call that implements the ability to shutdown your
 410           current kernel, and to start another kernel.  It is like a reboot
 411           but it is independent of the system firmware.   And like a reboot
 412           you can start any kernel with it, not just Linux.
 413
 414           The name comes from the similarity to the exec system call.
 415
 416           It is an ongoing process to be certain the hardware in a machine
 417           is properly shutdown, so do not be surprised if this code does not
 418           initially work for you.  As of this writing the exact hardware
 419           interface is strongly in flux, so no good recommendation can be
 420           made.
 421
 422 config CRASH_DUMP
 423         bool "Build a kdump crash kernel"
 424         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 425         select RELOCATABLE if (PPC64 && !COMPILE_TEST) || 44x || FSL_BOOKE
 426         help
 427           Build a kernel suitable for use as a kdump capture kernel.
 428           The same kernel binary can be used as production kernel and dump
 429           capture kernel.
 430
 431 config FA_DUMP
 432         bool "Firmware-assisted dump"
 433         depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
 434         help
 435           A robust mechanism to get reliable kernel crash dump with
 436           assistance from firmware. This approach does not use kexec,
 437           instead firmware assists in booting the kdump kernel
 438           while preserving memory contents. Firmware-assisted dump
 439           is meant to be a kdump replacement offering robustness and
 440           speed not possible without system firmware assistance.
 441
 442           If unsure, say "N"
 443
 444 config IRQ_ALL_CPUS
 445         bool "Distribute interrupts on all CPUs by default"
 446         depends on SMP
 447         help
 448           This option gives the kernel permission to distribute IRQs across
 449           multiple CPUs.  Saying N here will route all IRQs to the first
 450           CPU.  Generally saying Y is safe, although some problems have been
 451           reported with SMP Power Macintoshes with this option enabled.
 452
 453 config NUMA
 454         bool "NUMA support"
 455         depends on PPC64
 456         default y if SMP && PPC_PSERIES
 457
 458 config NODES_SHIFT
 459         int
 460         default "8" if PPC64
 461         default "4"
 462         depends on NEED_MULTIPLE_NODES
 463
 464 config USE_PERCPU_NUMA_NODE_ID
 465         def_bool y
 466         depends on NUMA
 467
 468 config HAVE_MEMORYLESS_NODES
 469         def_bool y
 470         depends on NUMA
 471
 472 config ARCH_SELECT_MEMORY_MODEL
 473         def_bool y
 474         depends on PPC64
 475
 476 config ARCH_FLATMEM_ENABLE
 477         def_bool y
 478         depends on (PPC64 && !NUMA) || PPC32
 479
 480 config ARCH_SPARSEMEM_ENABLE
 481         def_bool y
 482         depends on PPC64
 483         select SPARSEMEM_VMEMMAP_ENABLE
 484
 485 config ARCH_SPARSEMEM_DEFAULT
 486         def_bool y
 487         depends on (SMP && PPC_PSERIES) || PPC_PS3
 488
 489 config SYS_SUPPORTS_HUGETLBFS
 490         bool
 491
 492 source "mm/Kconfig"
 493
 494 config ARCH_MEMORY_PROBE
 495         def_bool y
 496         depends on MEMORY_HOTPLUG
 497
 498 # Some NUMA nodes have memory ranges that span
 499 # other nodes.  Even though a pfn is valid and
 500 # between a node's start and end pfns, it may not
 501 # reside on that node.  See memmap_init_zone()
 502 # for details.
 503 config NODES_SPAN_OTHER_NODES
 504         def_bool y
 505         depends on NEED_MULTIPLE_NODES
 506
 507 config PPC_HAS_HASH_64K
 508         bool
 509         depends on PPC64
 510         default n
 511
 512 config STDBINUTILS
 513         bool "Using standard binutils settings"
 514         depends on 44x
 515         default y
 516         help
 517           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 518           Note, that kernel will be able to run only those applications,
 519           which had been compiled using binutils later than 2.17.50.0.3 with
 520           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 521           the older binutils, you can patch them with a trivial patch, which
 522           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 523
 524 choice
 525         prompt "Page size"
 526         default PPC_4K_PAGES
 527         help
 528           Select the kernel logical page size. Increasing the page size
 529           will reduce software overhead at each page boundary, allow
 530           hardware prefetch mechanisms to be more effective, and allow
 531           larger dma transfers increasing IO efficiency and reducing
 532           overhead. However the utilization of memory will increase.
 533           For example, each cached file will using a multiple of the
 534           page size to hold its contents and the difference between the
 535           end of file and the end of page is wasted.
 536
 537           Some dedicated systems, such as software raid serving with
 538           accelerated calculations, have shown significant increases.
 539
 540           If you configure a 64 bit kernel for 64k pages but the
 541           processor does not support them, then the kernel will simulate
 542           them with 4k pages, loading them on demand, but with the
 543           reduced software overhead and larger internal fragmentation.
 544           For the 32 bit kernel, a large page option will not be offered
 545           unless it is supported by the configured processor.
 546
 547           If unsure, choose 4K_PAGES.
 548
 549 config PPC_4K_PAGES
 550         bool "4k page size"
 551
 552 config PPC_16K_PAGES
 553         bool "16k page size" if 44x
 554
 555 config PPC_64K_PAGES
 556         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 557         depends on !PPC_FSL_BOOK3E
 558         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 559
 560 config PPC_256K_PAGES
 561         bool "256k page size" if 44x
 562         depends on !STDBINUTILS
 563         help
 564           Make the page size 256k.
 565
 566           As the ELF standard only requires alignment to support page
 567           sizes up to 64k, you will need to compile all of your user
 568           space applications with a non-standard binutils settings
 569           (see the STDBINUTILS description for details).
 570
 571           Say N unless you know what you are doing.
 572
 573 endchoice
 574
 575 config FORCE_MAX_ZONEORDER
 576         int "Maximum zone order"
 577         range 9 64 if PPC64 && PPC_64K_PAGES
 578         default "9" if PPC64 && PPC_64K_PAGES
 579         range 13 64 if PPC64 && !PPC_64K_PAGES
 580         default "13" if PPC64 && !PPC_64K_PAGES
 581         range 9 64 if PPC32 && PPC_16K_PAGES
 582         default "9" if PPC32 && PPC_16K_PAGES
 583         range 7 64 if PPC32 && PPC_64K_PAGES
 584         default "7" if PPC32 && PPC_64K_PAGES
 585         range 5 64 if PPC32 && PPC_256K_PAGES
 586         default "5" if PPC32 && PPC_256K_PAGES
 587         range 11 64
 588         default "11"
 589         help
 590           The kernel memory allocator divides physically contiguous memory
 591           blocks into "zones", where each zone is a power of two number of
 592           pages.  This option selects the largest power of two that the kernel
 593           keeps in the memory allocator.  If you need to allocate very large
 594           blocks of physically contiguous memory, then you may need to
 595           increase this value.
 596
 597           This config option is actually maximum order plus one. For example,
 598           a value of 11 means that the largest free memory block is 2^10 pages.
 599
 600           The page size is not necessarily 4KB.  For example, on 64-bit
 601           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 602           this in mind when choosing a value for this option.
 603
 604 config PPC_SUBPAGE_PROT
 605         bool "Support setting protections for 4k subpages"
 606         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 607         help
 608           This option adds support for a system call to allow user programs
 609           to set access permissions (read/write, readonly, or no access)
 610           on the 4k subpages of each 64k page.
 611
 612 config PPC_COPRO_BASE
 613         bool
 614         default n
 615
 616 config SCHED_SMT
 617         bool "SMT (Hyperthreading) scheduler support"
 618         depends on PPC64 && SMP
 619         help
 620           SMT scheduler support improves the CPU scheduler's decision making
 621           when dealing with POWER5 cpus at a cost of slightly increased
 622           overhead in some places. If unsure say N here.
 623
 624 config PPC_DENORMALISATION
 625         bool "PowerPC denormalisation exception handling"
 626         depends on PPC_BOOK3S_64
 627         default "y" if PPC_POWERNV
 628         ---help---
 629           Add support for handling denormalisation of single precision
 630           values.  Useful for bare metal only.  If unsure say Y here.
 631
 632 config CMDLINE_BOOL
 633         bool "Default bootloader kernel arguments"
 634
 635 config CMDLINE
 636         string "Initial kernel command string"
 637         depends on CMDLINE_BOOL
 638         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 639         help
 640           On some platforms, there is currently no way for the boot loader to
 641           pass arguments to the kernel. For these platforms, you can supply
 642           some command-line options at build time by entering them here.  In
 643           most cases you will need to specify the root device here.
 644
 645 config CMDLINE_FORCE
 646         bool "Always use the default kernel command string"
 647         depends on CMDLINE_BOOL
 648         help
 649           Always use the default kernel command string, even if the boot
 650           loader passes other arguments to the kernel.
 651           This is useful if you cannot or don't want to change the
 652           command-line options your boot loader passes to the kernel.
 653
 654 config EXTRA_TARGETS
 655         string "Additional default image types"
 656         help
 657           List additional targets to be built by the bootwrapper here (separated
 658           by spaces).  This is useful for targets that depend of device tree
 659           files in the .dts directory.
 660
 661           Targets in this list will be build as part of the default build
 662           target, or when the user does a 'make zImage' or a
 663           'make zImage.initrd'.
 664
 665           If unsure, leave blank
 666
 667 config ARCH_WANTS_FREEZER_CONTROL
 668         def_bool y
 669         depends on ADB_PMU
 670
 671 source kernel/power/Kconfig
 672
 673 config SECCOMP
 674         bool "Enable seccomp to safely compute untrusted bytecode"
 675         depends on PROC_FS
 676         default y
 677         help
 678           This kernel feature is useful for number crunching applications
 679           that may need to compute untrusted bytecode during their
 680           execution. By using pipes or other transports made available to
 681           the process as file descriptors supporting the read/write
 682           syscalls, it's possible to isolate those applications in
 683           their own address space using seccomp. Once seccomp is
 684           enabled via /proc/<pid>/seccomp, it cannot be disabled
 685           and the task is only allowed to execute a few safe syscalls
 686           defined by each seccomp mode.
 687
 688           If unsure, say Y. Only embedded should say N here.
 689
 690 endmenu
 691
 692 config ISA_DMA_API
 693         bool
 694         default PCI
 695
 696 menu "Bus options"
 697
 698 config ISA
 699         bool "Support for ISA-bus hardware"
 700         depends on PPC_CHRP
 701         select PPC_I8259
 702         help
 703           Find out whether you have ISA slots on your motherboard.  ISA is the
 704           name of a bus system, i.e. the way the CPU talks to the other stuff
 705           inside your box.  If you have an Apple machine, say N here; if you
 706           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 707           embedded board, consult your board documentation.
 708
 709 config ZONE_DMA
 710         bool
 711         default y
 712
 713 config NEED_DMA_MAP_STATE
 714         def_bool (PPC64 || NOT_COHERENT_CACHE)
 715
 716 config NEED_SG_DMA_LENGTH
 717         def_bool y
 718
 719 config GENERIC_ISA_DMA
 720         bool
 721         depends on ISA_DMA_API
 722         default y
 723
 724 config PPC_INDIRECT_PCI
 725         bool
 726         depends on PCI
 727         default y if 40x || 44x
 728         default n
 729
 730 config EISA
 731         bool
 732
 733 config SBUS
 734         bool
 735
 736 config FSL_SOC
 737         bool
 738
 739 config FSL_PCI
 740         bool
 741         select PPC_INDIRECT_PCI
 742         select PCI_QUIRKS
 743
 744 config FSL_PMC
 745         bool
 746         default y
 747         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 748         help
 749           Freescale MPC85xx/MPC86xx power management controller support
 750           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 751
 752 config PPC4xx_CPM
 753         bool
 754         default y
 755         depends on SUSPEND && (44x || 40x)
 756         help
 757           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 758           It also enables support for two different idle states (idle-wait
 759           and idle-doze).
 760
 761 config 4xx_SOC
 762         bool
 763
 764 config FSL_LBC
 765         bool "Freescale Local Bus support"
 766         depends on FSL_SOC
 767         help
 768           Enables reporting of errors from the Freescale local bus
 769           controller.  Also contains some common code used by
 770           drivers for specific local bus peripherals.
 771
 772 config FSL_GTM
 773         bool
 774         depends on PPC_83xx || QUICC_ENGINE || CPM2
 775         help
 776           Freescale General-purpose Timers support
 777
 778 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 779 config MCA
 780         bool
 781
 782 # Platforms that what PCI turned unconditionally just do select PCI
 783 # in their config node.  Platforms that want to choose at config
 784 # time should select PPC_PCI_CHOICE
 785 config PPC_PCI_CHOICE
 786         bool
 787
 788 config PCI
 789         bool "PCI support" if PPC_PCI_CHOICE
 790         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 791                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 792         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 793         select GENERIC_PCI_IOMAP
 794         help
 795           Find out whether your system includes a PCI bus. PCI is the name of
 796           a bus system, i.e. the way the CPU talks to the other stuff inside
 797           your box.  If you say Y here, the kernel will include drivers and
 798           infrastructure code to support PCI bus devices.
 799
 800 config PCI_DOMAINS
 801         def_bool PCI
 802
 803 config PCI_SYSCALL
 804         def_bool PCI
 805
 806 config PCI_QSPAN
 807         bool "QSpan PCI"
 808         depends on !4xx && !CPM2 && 8xx
 809         select PPC_I8259
 810         help
 811           Say Y here if you have a system based on a Motorola 8xx-series
 812           embedded processor with a QSPAN PCI interface, otherwise say N.
 813
 814 config PCI_8260
 815         bool
 816         depends on PCI && 8260
 817         select PPC_INDIRECT_PCI
 818         default y
 819
 820 source "drivers/pci/pcie/Kconfig"
 821
 822 source "drivers/pci/Kconfig"
 823
 824 source "drivers/pcmcia/Kconfig"
 825
 826 source "drivers/pci/hotplug/Kconfig"
 827
 828 config HAS_RAPIDIO
 829         bool
 830         default n
 831
 832 config RAPIDIO
 833         tristate "RapidIO support"
 834         depends on HAS_RAPIDIO || PCI
 835         help
 836           If you say Y here, the kernel will include drivers and
 837           infrastructure code to support RapidIO interconnect devices.
 838
 839 config FSL_RIO
 840         bool "Freescale Embedded SRIO Controller support"
 841         depends on RAPIDIO = y && HAS_RAPIDIO
 842         default "n"
 843         ---help---
 844           Include support for RapidIO controller on Freescale embedded
 845           processors (MPC8548, MPC8641, etc).
 846
 847 source "drivers/rapidio/Kconfig"
 848
 849 endmenu
 850
 851 config NONSTATIC_KERNEL
 852         bool
 853         default n
 854
 855 menu "Advanced setup"
 856         depends on PPC32
 857
 858 config ADVANCED_OPTIONS
 859         bool "Prompt for advanced kernel configuration options"
 860         help
 861           This option will enable prompting for a variety of advanced kernel
 862           configuration options.  These options can cause the kernel to not
 863           work if they are set incorrectly, but can be used to optimize certain
 864           aspects of kernel memory management.
 865
 866           Unless you know what you are doing, say N here.
 867
 868 comment "Default settings for advanced configuration options are used"
 869         depends on !ADVANCED_OPTIONS
 870
 871 config LOWMEM_SIZE_BOOL
 872         bool "Set maximum low memory"
 873         depends on ADVANCED_OPTIONS
 874         help
 875           This option allows you to set the maximum amount of memory which
 876           will be used as "low memory", that is, memory which the kernel can
 877           access directly, without having to set up a kernel virtual mapping.
 878           This can be useful in optimizing the layout of kernel virtual
 879           memory.
 880
 881           Say N here unless you know what you are doing.
 882
 883 config LOWMEM_SIZE
 884         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 885         default "0x30000000"
 886
 887 config LOWMEM_CAM_NUM_BOOL
 888         bool "Set number of CAMs to use to map low memory"
 889         depends on ADVANCED_OPTIONS && FSL_BOOKE
 890         help
 891           This option allows you to set the maximum number of CAM slots that
 892           will be used to map low memory.  There are a limited number of slots
 893           available and even more limited number that will fit in the L1 MMU.
 894           However, using more entries will allow mapping more low memory.  This
 895           can be useful in optimizing the layout of kernel virtual memory.
 896
 897           Say N here unless you know what you are doing.
 898
 899 config LOWMEM_CAM_NUM
 900         depends on FSL_BOOKE
 901         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 902         default 3
 903
 904 config DYNAMIC_MEMSTART
 905         bool "Enable page aligned dynamic load address for kernel"
 906         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 907         select NONSTATIC_KERNEL
 908         help
 909           This option enables the kernel to be loaded at any page aligned
 910           physical address. The kernel creates a mapping from KERNELBASE to
 911           the address where the kernel is loaded. The page size here implies
 912           the TLB page size of the mapping for kernel on the particular platform.
 913           Please refer to the init code for finding the TLB page size.
 914
 915           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 916           kernel image, where the only restriction is the page aligned kernel
 917           load address. When this option is enabled, the compile time physical
 918           address CONFIG_PHYSICAL_START is ignored.
 919
 920           This option is overridden by CONFIG_RELOCATABLE
 921
 922 config RELOCATABLE
 923         bool "Build a relocatable kernel"
 924         depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE)
 925         select NONSTATIC_KERNEL
 926         help
 927           This builds a kernel image that is capable of running at the
 928           location the kernel is loaded at, without any alignment restrictions.
 929           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 930
 931           One use is for the kexec on panic case where the recovery kernel
 932           must live at a different physical address than the primary
 933           kernel.
 934
 935           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 936           it has been loaded at and the compile time physical addresses
 937           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 938           setting can still be useful to bootwrappers that need to know the
 939           load address of the kernel (eg. u-boot/mkimage).
 940
 941 config RELOCATABLE_PPC32
 942         def_bool y
 943         depends on PPC32 && RELOCATABLE
 944
 945 config PAGE_OFFSET_BOOL
 946         bool "Set custom page offset address"
 947         depends on ADVANCED_OPTIONS
 948         help
 949           This option allows you to set the kernel virtual address at which
 950           the kernel will map low memory.  This can be useful in optimizing
 951           the virtual memory layout of the system.
 952
 953           Say N here unless you know what you are doing.
 954
 955 config PAGE_OFFSET
 956         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 957         default "0xc0000000"
 958
 959 config KERNEL_START_BOOL
 960         bool "Set custom kernel base address"
 961         depends on ADVANCED_OPTIONS
 962         help
 963           This option allows you to set the kernel virtual address at which
 964           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 965           however there are times (like kdump) that one might not want them
 966           to be the same.
 967
 968           Say N here unless you know what you are doing.
 969
 970 config KERNEL_START
 971         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 972         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 973         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 974         default "0xc0000000"
 975
 976 config PHYSICAL_START_BOOL
 977         bool "Set physical address where the kernel is loaded"
 978         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 979         help
 980           This gives the physical address where the kernel is loaded.
 981
 982           Say N here unless you know what you are doing.
 983
 984 config PHYSICAL_START
 985         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 986         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 987         default "0x00000000"
 988
 989 config PHYSICAL_ALIGN
 990         hex
 991         default "0x04000000" if FSL_BOOKE
 992         help
 993           This value puts the alignment restrictions on physical address
 994           where kernel is loaded and run from. Kernel is compiled for an
 995           address which meets above alignment restriction.
 996
 997 config TASK_SIZE_BOOL
 998         bool "Set custom user task size"
 999         depends on ADVANCED_OPTIONS
1000         help
1001           This option allows you to set the amount of virtual address space
1002           allocated to user tasks.  This can be useful in optimizing the
1003           virtual memory layout of the system.
1004
1005           Say N here unless you know what you are doing.
1006
1007 config TASK_SIZE
1008         hex "Size of user task space" if TASK_SIZE_BOOL
1009         default "0x80000000" if PPC_8xx
1010         default "0xc0000000"
1011
1012 config CONSISTENT_SIZE_BOOL
1013         bool "Set custom consistent memory pool size"
1014         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
1015         help
1016           This option allows you to set the size of the
1017           consistent memory pool.  This pool of virtual memory
1018           is used to make consistent memory allocations.
1019
1020 config CONSISTENT_SIZE
1021         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
1022         default "0x00200000" if NOT_COHERENT_CACHE
1023
1024 config PIN_TLB
1025         bool "Pinned Kernel TLBs (860 ONLY)"
1026         depends on ADVANCED_OPTIONS && 8xx
1027 endmenu
1028
1029 if PPC64
1030 config RELOCATABLE
1031         bool "Build a relocatable kernel"
1032         depends on !COMPILE_TEST
1033         select NONSTATIC_KERNEL
1034         help
1035           This builds a kernel image that is capable of running anywhere
1036           in the RMA (real memory area) at any 16k-aligned base address.
1037           The kernel is linked as a position-independent executable (PIE)
1038           and contains dynamic relocations which are processed early
1039           in the bootup process.
1040
1041           One use is for the kexec on panic case where the recovery kernel
1042           must live at a different physical address than the primary
1043           kernel.
1044
1045 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1046 config PAGE_OFFSET
1047         hex
1048         default "0xc000000000000000"
1049 config KERNEL_START
1050         hex
1051         default "0xc000000000000000"
1052 config PHYSICAL_START
1053         hex
1054         default "0x00000000"
1055 endif
1056
1057 config  ARCH_RANDOM
1058         def_bool n
1059
1060 source "net/Kconfig"
1061
1062 source "drivers/Kconfig"
1063
1064 source "fs/Kconfig"
1065
1066 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1067
1068 source "lib/Kconfig"
1069
1070 source "arch/powerpc/Kconfig.debug"
1071
1072 source "security/Kconfig"
1073
1074 config KEYS_COMPAT
1075         bool
1076         depends on COMPAT && KEYS
1077         default y
1078
1079 source "crypto/Kconfig"
1080
1081 config PPC_LIB_RHEAP
1082         bool
1083
1084 source "arch/powerpc/kvm/Kconfig"