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