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 BINFMT_ELF
  89         select OF
  90         select OF_EARLY_FLATTREE
  91         select HAVE_FTRACE_MCOUNT_RECORD
  92         select HAVE_DYNAMIC_FTRACE
  93         select HAVE_FUNCTION_TRACER
  94         select HAVE_FUNCTION_GRAPH_TRACER
  95         select SYSCTL_EXCEPTION_TRACE
  96         select ARCH_WANT_OPTIONAL_GPIOLIB
  97         select VIRT_TO_BUS if !PPC64
  98         select HAVE_IDE
  99         select HAVE_IOREMAP_PROT
 100         select HAVE_EFFICIENT_UNALIGNED_ACCESS
 101         select HAVE_KPROBES
 102         select HAVE_ARCH_KGDB
 103         select HAVE_KRETPROBES
 104         select HAVE_ARCH_TRACEHOOK
 105         select HAVE_MEMBLOCK
 106         select HAVE_MEMBLOCK_NODE_MAP
 107         select HAVE_DMA_ATTRS
 108         select HAVE_DMA_API_DEBUG
 109         select USE_GENERIC_SMP_HELPERS if SMP
 110         select HAVE_OPROFILE
 111         select HAVE_DEBUG_KMEMLEAK
 112         select GENERIC_ATOMIC64 if PPC32
 113         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 114         select HAVE_PERF_EVENTS
 115         select HAVE_REGS_AND_STACK_ACCESS_API
 116         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 117         select ARCH_WANT_IPC_PARSE_VERSION
 118         select SPARSE_IRQ
 119         select IRQ_DOMAIN
 120         select GENERIC_IRQ_SHOW
 121         select GENERIC_IRQ_SHOW_LEVEL
 122         select IRQ_FORCED_THREADING
 123         select HAVE_RCU_TABLE_FREE if SMP
 124         select HAVE_SYSCALL_TRACEPOINTS
 125         select HAVE_BPF_JIT if PPC64
 126         select HAVE_ARCH_JUMP_LABEL
 127         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 128         select GENERIC_SMP_IDLE_THREAD
 129         select GENERIC_CMOS_UPDATE
 130         select GENERIC_TIME_VSYSCALL_OLD
 131         select GENERIC_CLOCKEVENTS
 132         select GENERIC_STRNCPY_FROM_USER
 133         select GENERIC_STRNLEN_USER
 134         select HAVE_MOD_ARCH_SPECIFIC
 135         select MODULES_USE_ELF_RELA
 136         select CLONE_BACKWARDS
 137         select ARCH_USE_BUILTIN_BSWAP
 138         select OLD_SIGSUSPEND
 139         select OLD_SIGACTION if PPC32
 140         select HAVE_DEBUG_STACKOVERFLOW
 141
 142 config EARLY_PRINTK
 143         bool
 144         default y
 145
 146 config COMPAT
 147         bool
 148         default y if PPC64
 149         select COMPAT_BINFMT_ELF
 150         select ARCH_WANT_OLD_COMPAT_IPC
 151         select COMPAT_OLD_SIGACTION
 152
 153 config SYSVIPC_COMPAT
 154         bool
 155         depends on COMPAT && SYSVIPC
 156         default y
 157
 158 # All PPC32s use generic nvram driver through ppc_md
 159 config GENERIC_NVRAM
 160         bool
 161         default y if PPC32
 162
 163 config SCHED_OMIT_FRAME_POINTER
 164         bool
 165         default y
 166
 167 config ARCH_MAY_HAVE_PC_FDC
 168         bool
 169         default !PPC_PSERIES || PCI
 170
 171 config PPC_OF
 172         def_bool y
 173
 174 config PPC_UDBG_16550
 175         bool
 176         default n
 177
 178 config GENERIC_TBSYNC
 179         bool
 180         default y if PPC32 && SMP
 181         default n
 182
 183 config AUDIT_ARCH
 184         bool
 185         default y
 186
 187 config GENERIC_BUG
 188         bool
 189         default y
 190         depends on BUG
 191
 192 config SYS_SUPPORTS_APM_EMULATION
 193         default y if PMAC_APM_EMU
 194         bool
 195
 196 config EPAPR_BOOT
 197         bool
 198         help
 199           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 200         default n
 201
 202 config DEFAULT_UIMAGE
 203         bool
 204         help
 205           Used to allow a board to specify it wants a uImage built by default
 206         default n
 207
 208 config REDBOOT
 209         bool
 210
 211 config ARCH_HIBERNATION_POSSIBLE
 212         bool
 213         default y
 214
 215 config ARCH_SUSPEND_POSSIBLE
 216         def_bool y
 217         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 218                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 219                    || 44x || 40x
 220
 221 config PPC_DCR_NATIVE
 222         bool
 223         default n
 224
 225 config PPC_DCR_MMIO
 226         bool
 227         default n
 228
 229 config PPC_DCR
 230         bool
 231         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 232         default y
 233
 234 config PPC_OF_PLATFORM_PCI
 235         bool
 236         depends on PCI
 237         depends on PPC64 # not supported on 32 bits yet
 238         default n
 239
 240 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 241         def_bool y
 242
 243 config ARCH_SUPPORTS_UPROBES
 244         def_bool y
 245
 246 config PPC_ADV_DEBUG_REGS
 247         bool
 248         depends on 40x || BOOKE
 249         default y
 250
 251 config PPC_ADV_DEBUG_IACS
 252         int
 253         depends on PPC_ADV_DEBUG_REGS
 254         default 4 if 44x
 255         default 2
 256
 257 config PPC_ADV_DEBUG_DACS
 258         int
 259         depends on PPC_ADV_DEBUG_REGS
 260         default 2
 261
 262 config PPC_ADV_DEBUG_DVCS
 263         int
 264         depends on PPC_ADV_DEBUG_REGS
 265         default 2 if 44x
 266         default 0
 267
 268 config PPC_ADV_DEBUG_DAC_RANGE
 269         bool
 270         depends on PPC_ADV_DEBUG_REGS && 44x
 271         default y
 272
 273 config PPC_EMULATE_SSTEP
 274         bool
 275         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 276
 277 source "init/Kconfig"
 278
 279 source "kernel/Kconfig.freezer"
 280
 281 source "arch/powerpc/sysdev/Kconfig"
 282 source "arch/powerpc/platforms/Kconfig"
 283
 284 menu "Kernel options"
 285
 286 config HIGHMEM
 287         bool "High memory support"
 288         depends on PPC32
 289
 290 source kernel/Kconfig.hz
 291 source kernel/Kconfig.preempt
 292 source "fs/Kconfig.binfmt"
 293
 294 config HUGETLB_PAGE_SIZE_VARIABLE
 295         bool
 296         depends on HUGETLB_PAGE
 297         default y
 298
 299 config MATH_EMULATION
 300         bool "Math emulation"
 301         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
 302         ---help---
 303           Some PowerPC chips designed for embedded applications do not have
 304           a floating-point unit and therefore do not implement the
 305           floating-point instructions in the PowerPC instruction set.  If you
 306           say Y here, the kernel will include code to emulate a floating-point
 307           unit, which will allow programs that use floating-point
 308           instructions to run.
 309
 310           This is also useful to emulate missing (optional) instructions
 311           such as fsqrt on cores that do have an FPU but do not implement
 312           them (such as Freescale BookE).
 313
 314 choice
 315         prompt "Math emulation options"
 316         default MATH_EMULATION_FULL
 317         depends on MATH_EMULATION
 318
 319 config  MATH_EMULATION_FULL
 320         bool "Emulate all the floating point instructions"
 321         ---help---
 322           Select this option will enable the kernel to support to emulate
 323           all the floating point instructions. If your SoC doesn't have
 324           a FPU, you should select this.
 325
 326 config MATH_EMULATION_HW_UNIMPLEMENTED
 327         bool "Just emulate the FPU unimplemented instructions"
 328         ---help---
 329           Select this if you know there does have a hardware FPU on your
 330           SoC, but some floating point instructions are not implemented by that.
 331
 332 endchoice
 333
 334 config PPC_TRANSACTIONAL_MEM
 335        bool "Transactional Memory support for POWERPC"
 336        depends on PPC_BOOK3S_64
 337        depends on SMP
 338        default n
 339        ---help---
 340          Support user-mode Transactional Memory on POWERPC.
 341
 342 config IOMMU_HELPER
 343         def_bool PPC64
 344
 345 config SWIOTLB
 346         bool "SWIOTLB support"
 347         default n
 348         select IOMMU_HELPER
 349         ---help---
 350           Support for IO bounce buffering for systems without an IOMMU.
 351           This allows us to DMA to the full physical address space on
 352           platforms where the size of a physical address is larger
 353           than the bus address.  Not all platforms support this.
 354
 355 config HOTPLUG_CPU
 356         bool "Support for enabling/disabling CPUs"
 357         depends on SMP && (PPC_PSERIES || \
 358         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 359         ---help---
 360           Say Y here to be able to disable and re-enable individual
 361           CPUs at runtime on SMP machines.
 362
 363           Say N if you are unsure.
 364
 365 config ARCH_CPU_PROBE_RELEASE
 366         def_bool y
 367         depends on HOTPLUG_CPU
 368
 369 config ARCH_ENABLE_MEMORY_HOTPLUG
 370         def_bool y
 371
 372 config ARCH_HAS_WALK_MEMORY
 373         def_bool y
 374
 375 config ARCH_ENABLE_MEMORY_HOTREMOVE
 376         def_bool y
 377
 378 config KEXEC
 379         bool "kexec system call"
 380         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 381         help
 382           kexec is a system call that implements the ability to shutdown your
 383           current kernel, and to start another kernel.  It is like a reboot
 384           but it is independent of the system firmware.   And like a reboot
 385           you can start any kernel with it, not just Linux.
 386
 387           The name comes from the similarity to the exec system call.
 388
 389           It is an ongoing process to be certain the hardware in a machine
 390           is properly shutdown, so do not be surprised if this code does not
 391           initially work for you.  As of this writing the exact hardware
 392           interface is strongly in flux, so no good recommendation can be
 393           made.
 394
 395 config CRASH_DUMP
 396         bool "Build a kdump crash kernel"
 397         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 398         select RELOCATABLE if PPC64 || 44x
 399         select DYNAMIC_MEMSTART if FSL_BOOKE
 400         help
 401           Build a kernel suitable for use as a kdump capture kernel.
 402           The same kernel binary can be used as production kernel and dump
 403           capture kernel.
 404
 405 config FA_DUMP
 406         bool "Firmware-assisted dump"
 407         depends on PPC64 && PPC_RTAS && CRASH_DUMP
 408         help
 409           A robust mechanism to get reliable kernel crash dump with
 410           assistance from firmware. This approach does not use kexec,
 411           instead firmware assists in booting the kdump kernel
 412           while preserving memory contents. Firmware-assisted dump
 413           is meant to be a kdump replacement offering robustness and
 414           speed not possible without system firmware assistance.
 415
 416           If unsure, say "N"
 417
 418 config IRQ_ALL_CPUS
 419         bool "Distribute interrupts on all CPUs by default"
 420         depends on SMP && !MV64360
 421         help
 422           This option gives the kernel permission to distribute IRQs across
 423           multiple CPUs.  Saying N here will route all IRQs to the first
 424           CPU.  Generally saying Y is safe, although some problems have been
 425           reported with SMP Power Macintoshes with this option enabled.
 426
 427 config NUMA
 428         bool "NUMA support"
 429         depends on PPC64
 430         default y if SMP && PPC_PSERIES
 431
 432 config NODES_SHIFT
 433         int
 434         default "8" if PPC64
 435         default "4"
 436         depends on NEED_MULTIPLE_NODES
 437
 438 config ARCH_SELECT_MEMORY_MODEL
 439         def_bool y
 440         depends on PPC64
 441
 442 config ARCH_FLATMEM_ENABLE
 443         def_bool y
 444         depends on (PPC64 && !NUMA) || PPC32
 445
 446 config ARCH_SPARSEMEM_ENABLE
 447         def_bool y
 448         depends on PPC64
 449         select SPARSEMEM_VMEMMAP_ENABLE
 450
 451 config ARCH_SPARSEMEM_DEFAULT
 452         def_bool y
 453         depends on (SMP && PPC_PSERIES) || PPC_PS3
 454
 455 config SYS_SUPPORTS_HUGETLBFS
 456         bool
 457
 458 source "mm/Kconfig"
 459
 460 config ARCH_MEMORY_PROBE
 461         def_bool y
 462         depends on MEMORY_HOTPLUG
 463
 464 # Some NUMA nodes have memory ranges that span
 465 # other nodes.  Even though a pfn is valid and
 466 # between a node's start and end pfns, it may not
 467 # reside on that node.  See memmap_init_zone()
 468 # for details.
 469 config NODES_SPAN_OTHER_NODES
 470         def_bool y
 471         depends on NEED_MULTIPLE_NODES
 472
 473 config PPC_HAS_HASH_64K
 474         bool
 475         depends on PPC64
 476         default n
 477
 478 config STDBINUTILS
 479         bool "Using standard binutils settings"
 480         depends on 44x
 481         default y
 482         help
 483           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 484           Note, that kernel will be able to run only those applications,
 485           which had been compiled using binutils later than 2.17.50.0.3 with
 486           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 487           the older binutils, you can patch them with a trivial patch, which
 488           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 489
 490 choice
 491         prompt "Page size"
 492         default PPC_4K_PAGES
 493         help
 494           Select the kernel logical page size. Increasing the page size
 495           will reduce software overhead at each page boundary, allow
 496           hardware prefetch mechanisms to be more effective, and allow
 497           larger dma transfers increasing IO efficiency and reducing
 498           overhead. However the utilization of memory will increase.
 499           For example, each cached file will using a multiple of the
 500           page size to hold its contents and the difference between the
 501           end of file and the end of page is wasted.
 502
 503           Some dedicated systems, such as software raid serving with
 504           accelerated calculations, have shown significant increases.
 505
 506           If you configure a 64 bit kernel for 64k pages but the
 507           processor does not support them, then the kernel will simulate
 508           them with 4k pages, loading them on demand, but with the
 509           reduced software overhead and larger internal fragmentation.
 510           For the 32 bit kernel, a large page option will not be offered
 511           unless it is supported by the configured processor.
 512
 513           If unsure, choose 4K_PAGES.
 514
 515 config PPC_4K_PAGES
 516         bool "4k page size"
 517
 518 config PPC_16K_PAGES
 519         bool "16k page size" if 44x
 520
 521 config PPC_64K_PAGES
 522         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 523         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 524
 525 config PPC_256K_PAGES
 526         bool "256k page size" if 44x
 527         depends on !STDBINUTILS
 528         help
 529           Make the page size 256k.
 530
 531           As the ELF standard only requires alignment to support page
 532           sizes up to 64k, you will need to compile all of your user
 533           space applications with a non-standard binutils settings
 534           (see the STDBINUTILS description for details).
 535
 536           Say N unless you know what you are doing.
 537
 538 endchoice
 539
 540 config FORCE_MAX_ZONEORDER
 541         int "Maximum zone order"
 542         range 9 64 if PPC64 && PPC_64K_PAGES
 543         default "9" if PPC64 && PPC_64K_PAGES
 544         range 13 64 if PPC64 && !PPC_64K_PAGES
 545         default "13" if PPC64 && !PPC_64K_PAGES
 546         range 9 64 if PPC32 && PPC_16K_PAGES
 547         default "9" if PPC32 && PPC_16K_PAGES
 548         range 7 64 if PPC32 && PPC_64K_PAGES
 549         default "7" if PPC32 && PPC_64K_PAGES
 550         range 5 64 if PPC32 && PPC_256K_PAGES
 551         default "5" if PPC32 && PPC_256K_PAGES
 552         range 11 64
 553         default "11"
 554         help
 555           The kernel memory allocator divides physically contiguous memory
 556           blocks into "zones", where each zone is a power of two number of
 557           pages.  This option selects the largest power of two that the kernel
 558           keeps in the memory allocator.  If you need to allocate very large
 559           blocks of physically contiguous memory, then you may need to
 560           increase this value.
 561
 562           This config option is actually maximum order plus one. For example,
 563           a value of 11 means that the largest free memory block is 2^10 pages.
 564
 565           The page size is not necessarily 4KB.  For example, on 64-bit
 566           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 567           this in mind when choosing a value for this option.
 568
 569 config PPC_SUBPAGE_PROT
 570         bool "Support setting protections for 4k subpages"
 571         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 572         help
 573           This option adds support for a system call to allow user programs
 574           to set access permissions (read/write, readonly, or no access)
 575           on the 4k subpages of each 64k page.
 576
 577 config SCHED_SMT
 578         bool "SMT (Hyperthreading) scheduler support"
 579         depends on PPC64 && SMP
 580         help
 581           SMT scheduler support improves the CPU scheduler's decision making
 582           when dealing with POWER5 cpus at a cost of slightly increased
 583           overhead in some places. If unsure say N here.
 584
 585 config PPC_DENORMALISATION
 586         bool "PowerPC denormalisation exception handling"
 587         depends on PPC_BOOK3S_64
 588         default "y" if PPC_POWERNV
 589         ---help---
 590           Add support for handling denormalisation of single precision
 591           values.  Useful for bare metal only.  If unsure say Y here.
 592
 593 config CMDLINE_BOOL
 594         bool "Default bootloader kernel arguments"
 595
 596 config CMDLINE
 597         string "Initial kernel command string"
 598         depends on CMDLINE_BOOL
 599         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 600         help
 601           On some platforms, there is currently no way for the boot loader to
 602           pass arguments to the kernel. For these platforms, you can supply
 603           some command-line options at build time by entering them here.  In
 604           most cases you will need to specify the root device here.
 605
 606 config EXTRA_TARGETS
 607         string "Additional default image types"
 608         help
 609           List additional targets to be built by the bootwrapper here (separated
 610           by spaces).  This is useful for targets that depend of device tree
 611           files in the .dts directory.
 612
 613           Targets in this list will be build as part of the default build
 614           target, or when the user does a 'make zImage' or a
 615           'make zImage.initrd'.
 616
 617           If unsure, leave blank
 618
 619 config ARCH_WANTS_FREEZER_CONTROL
 620         def_bool y
 621         depends on ADB_PMU
 622
 623 source kernel/power/Kconfig
 624
 625 config SECCOMP
 626         bool "Enable seccomp to safely compute untrusted bytecode"
 627         depends on PROC_FS
 628         default y
 629         help
 630           This kernel feature is useful for number crunching applications
 631           that may need to compute untrusted bytecode during their
 632           execution. By using pipes or other transports made available to
 633           the process as file descriptors supporting the read/write
 634           syscalls, it's possible to isolate those applications in
 635           their own address space using seccomp. Once seccomp is
 636           enabled via /proc/<pid>/seccomp, it cannot be disabled
 637           and the task is only allowed to execute a few safe syscalls
 638           defined by each seccomp mode.
 639
 640           If unsure, say Y. Only embedded should say N here.
 641
 642 endmenu
 643
 644 config ISA_DMA_API
 645         bool
 646         default PCI
 647
 648 menu "Bus options"
 649
 650 config ISA
 651         bool "Support for ISA-bus hardware"
 652         depends on PPC_CHRP
 653         select PPC_I8259
 654         help
 655           Find out whether you have ISA slots on your motherboard.  ISA is the
 656           name of a bus system, i.e. the way the CPU talks to the other stuff
 657           inside your box.  If you have an Apple machine, say N here; if you
 658           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 659           embedded board, consult your board documentation.
 660
 661 config ZONE_DMA
 662         bool
 663         default y
 664
 665 config NEED_DMA_MAP_STATE
 666         def_bool (PPC64 || NOT_COHERENT_CACHE)
 667
 668 config NEED_SG_DMA_LENGTH
 669         def_bool y
 670
 671 config GENERIC_ISA_DMA
 672         bool
 673         depends on ISA_DMA_API
 674         default y
 675
 676 config PPC_INDIRECT_PCI
 677         bool
 678         depends on PCI
 679         default y if 40x || 44x
 680         default n
 681
 682 config EISA
 683         bool
 684
 685 config SBUS
 686         bool
 687
 688 config FSL_SOC
 689         bool
 690
 691 config FSL_PCI
 692         bool
 693         select PPC_INDIRECT_PCI
 694         select PCI_QUIRKS
 695
 696 config FSL_PMC
 697         bool
 698         default y
 699         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 700         help
 701           Freescale MPC85xx/MPC86xx power management controller support
 702           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 703
 704 config PPC4xx_CPM
 705         bool
 706         default y
 707         depends on SUSPEND && (44x || 40x)
 708         help
 709           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 710           It also enables support for two different idle states (idle-wait
 711           and idle-doze).
 712
 713 config 4xx_SOC
 714         bool
 715
 716 config FSL_LBC
 717         bool "Freescale Local Bus support"
 718         depends on FSL_SOC
 719         help
 720           Enables reporting of errors from the Freescale local bus
 721           controller.  Also contains some common code used by
 722           drivers for specific local bus peripherals.
 723
 724 config FSL_IFC
 725         bool
 726         depends on FSL_SOC
 727
 728 config FSL_GTM
 729         bool
 730         depends on PPC_83xx || QUICC_ENGINE || CPM2
 731         help
 732           Freescale General-purpose Timers support
 733
 734 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 735 config MCA
 736         bool
 737
 738 # Platforms that what PCI turned unconditionally just do select PCI
 739 # in their config node.  Platforms that want to choose at config
 740 # time should select PPC_PCI_CHOICE
 741 config PPC_PCI_CHOICE
 742         bool
 743
 744 config PCI
 745         bool "PCI support" if PPC_PCI_CHOICE
 746         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 747                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 748         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 749         select GENERIC_PCI_IOMAP
 750         help
 751           Find out whether your system includes a PCI bus. PCI is the name of
 752           a bus system, i.e. the way the CPU talks to the other stuff inside
 753           your box.  If you say Y here, the kernel will include drivers and
 754           infrastructure code to support PCI bus devices.
 755
 756 config PCI_DOMAINS
 757         def_bool PCI
 758
 759 config PCI_SYSCALL
 760         def_bool PCI
 761
 762 config PCI_QSPAN
 763         bool "QSpan PCI"
 764         depends on !4xx && !CPM2 && 8xx
 765         select PPC_I8259
 766         help
 767           Say Y here if you have a system based on a Motorola 8xx-series
 768           embedded processor with a QSPAN PCI interface, otherwise say N.
 769
 770 config PCI_8260
 771         bool
 772         depends on PCI && 8260
 773         select PPC_INDIRECT_PCI
 774         default y
 775
 776 source "drivers/pci/pcie/Kconfig"
 777
 778 source "drivers/pci/Kconfig"
 779
 780 source "drivers/pcmcia/Kconfig"
 781
 782 source "drivers/pci/hotplug/Kconfig"
 783
 784 config HAS_RAPIDIO
 785         bool
 786         default n
 787
 788 config RAPIDIO
 789         bool "RapidIO support"
 790         depends on HAS_RAPIDIO || PCI
 791         help
 792           If you say Y here, the kernel will include drivers and
 793           infrastructure code to support RapidIO interconnect devices.
 794
 795 config FSL_RIO
 796         bool "Freescale Embedded SRIO Controller support"
 797         depends on RAPIDIO && HAS_RAPIDIO
 798         default "n"
 799         ---help---
 800           Include support for RapidIO controller on Freescale embedded
 801           processors (MPC8548, MPC8641, etc).
 802
 803 source "drivers/rapidio/Kconfig"
 804
 805 endmenu
 806
 807 config NONSTATIC_KERNEL
 808         bool
 809         default n
 810
 811 menu "Advanced setup"
 812         depends on PPC32
 813
 814 config ADVANCED_OPTIONS
 815         bool "Prompt for advanced kernel configuration options"
 816         help
 817           This option will enable prompting for a variety of advanced kernel
 818           configuration options.  These options can cause the kernel to not
 819           work if they are set incorrectly, but can be used to optimize certain
 820           aspects of kernel memory management.
 821
 822           Unless you know what you are doing, say N here.
 823
 824 comment "Default settings for advanced configuration options are used"
 825         depends on !ADVANCED_OPTIONS
 826
 827 config LOWMEM_SIZE_BOOL
 828         bool "Set maximum low memory"
 829         depends on ADVANCED_OPTIONS
 830         help
 831           This option allows you to set the maximum amount of memory which
 832           will be used as "low memory", that is, memory which the kernel can
 833           access directly, without having to set up a kernel virtual mapping.
 834           This can be useful in optimizing the layout of kernel virtual
 835           memory.
 836
 837           Say N here unless you know what you are doing.
 838
 839 config LOWMEM_SIZE
 840         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 841         default "0x30000000"
 842
 843 config LOWMEM_CAM_NUM_BOOL
 844         bool "Set number of CAMs to use to map low memory"
 845         depends on ADVANCED_OPTIONS && FSL_BOOKE
 846         help
 847           This option allows you to set the maximum number of CAM slots that
 848           will be used to map low memory.  There are a limited number of slots
 849           available and even more limited number that will fit in the L1 MMU.
 850           However, using more entries will allow mapping more low memory.  This
 851           can be useful in optimizing the layout of kernel virtual memory.
 852
 853           Say N here unless you know what you are doing.
 854
 855 config LOWMEM_CAM_NUM
 856         depends on FSL_BOOKE
 857         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 858         default 3
 859
 860 config DYNAMIC_MEMSTART
 861         bool "Enable page aligned dynamic load address for kernel"
 862         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 863         select NONSTATIC_KERNEL
 864         help
 865           This option enables the kernel to be loaded at any page aligned
 866           physical address. The kernel creates a mapping from KERNELBASE to
 867           the address where the kernel is loaded. The page size here implies
 868           the TLB page size of the mapping for kernel on the particular platform.
 869           Please refer to the init code for finding the TLB page size.
 870
 871           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 872           kernel image, where the only restriction is the page aligned kernel
 873           load address. When this option is enabled, the compile time physical
 874           address CONFIG_PHYSICAL_START is ignored.
 875
 876           This option is overridden by CONFIG_RELOCATABLE
 877
 878 config RELOCATABLE
 879         bool "Build a relocatable kernel"
 880         depends on ADVANCED_OPTIONS && FLATMEM && 44x
 881         select NONSTATIC_KERNEL
 882         help
 883           This builds a kernel image that is capable of running at the
 884           location the kernel is loaded at, without any alignment restrictions.
 885           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 886
 887           One use is for the kexec on panic case where the recovery kernel
 888           must live at a different physical address than the primary
 889           kernel.
 890
 891           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 892           it has been loaded at and the compile time physical addresses
 893           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 894           setting can still be useful to bootwrappers that need to know the
 895           load address of the kernel (eg. u-boot/mkimage).
 896
 897 config RELOCATABLE_PPC32
 898         def_bool y
 899         depends on PPC32 && RELOCATABLE
 900
 901 config PAGE_OFFSET_BOOL
 902         bool "Set custom page offset address"
 903         depends on ADVANCED_OPTIONS
 904         help
 905           This option allows you to set the kernel virtual address at which
 906           the kernel will map low memory.  This can be useful in optimizing
 907           the virtual memory layout of the system.
 908
 909           Say N here unless you know what you are doing.
 910
 911 config PAGE_OFFSET
 912         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 913         default "0xc0000000"
 914
 915 config KERNEL_START_BOOL
 916         bool "Set custom kernel base address"
 917         depends on ADVANCED_OPTIONS
 918         help
 919           This option allows you to set the kernel virtual address at which
 920           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 921           however there are times (like kdump) that one might not want them
 922           to be the same.
 923
 924           Say N here unless you know what you are doing.
 925
 926 config KERNEL_START
 927         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 928         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 929         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 930         default "0xc0000000"
 931
 932 config PHYSICAL_START_BOOL
 933         bool "Set physical address where the kernel is loaded"
 934         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 935         help
 936           This gives the physical address where the kernel is loaded.
 937
 938           Say N here unless you know what you are doing.
 939
 940 config PHYSICAL_START
 941         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 942         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 943         default "0x00000000"
 944
 945 config PHYSICAL_ALIGN
 946         hex
 947         default "0x04000000" if FSL_BOOKE
 948         help
 949           This value puts the alignment restrictions on physical address
 950           where kernel is loaded and run from. Kernel is compiled for an
 951           address which meets above alignment restriction.
 952
 953 config TASK_SIZE_BOOL
 954         bool "Set custom user task size"
 955         depends on ADVANCED_OPTIONS
 956         help
 957           This option allows you to set the amount of virtual address space
 958           allocated to user tasks.  This can be useful in optimizing the
 959           virtual memory layout of the system.
 960
 961           Say N here unless you know what you are doing.
 962
 963 config TASK_SIZE
 964         hex "Size of user task space" if TASK_SIZE_BOOL
 965         default "0x80000000" if PPC_8xx
 966         default "0xc0000000"
 967
 968 config CONSISTENT_SIZE_BOOL
 969         bool "Set custom consistent memory pool size"
 970         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 971         help
 972           This option allows you to set the size of the
 973           consistent memory pool.  This pool of virtual memory
 974           is used to make consistent memory allocations.
 975
 976 config CONSISTENT_SIZE
 977         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 978         default "0x00200000" if NOT_COHERENT_CACHE
 979
 980 config PIN_TLB
 981         bool "Pinned Kernel TLBs (860 ONLY)"
 982         depends on ADVANCED_OPTIONS && 8xx
 983 endmenu
 984
 985 if PPC64
 986 config RELOCATABLE
 987         bool "Build a relocatable kernel"
 988         select NONSTATIC_KERNEL
 989         help
 990           This builds a kernel image that is capable of running anywhere
 991           in the RMA (real memory area) at any 16k-aligned base address.
 992           The kernel is linked as a position-independent executable (PIE)
 993           and contains dynamic relocations which are processed early
 994           in the bootup process.
 995
 996           One use is for the kexec on panic case where the recovery kernel
 997           must live at a different physical address than the primary
 998           kernel.
 999
1000 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1001 config PAGE_OFFSET
1002         hex
1003         default "0xc000000000000000"
1004 config KERNEL_START
1005         hex
1006         default "0xc000000000000000"
1007 config PHYSICAL_START
1008         hex
1009         default "0x00000000"
1010 endif
1011
1012 source "net/Kconfig"
1013
1014 source "drivers/Kconfig"
1015
1016 source "fs/Kconfig"
1017
1018 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1019
1020 source "lib/Kconfig"
1021
1022 source "arch/powerpc/Kconfig.debug"
1023
1024 source "security/Kconfig"
1025
1026 config KEYS_COMPAT
1027         bool
1028         depends on COMPAT && KEYS
1029         default y
1030
1031 source "crypto/Kconfig"
1032
1033 config PPC_CLOCK
1034         bool
1035         default n
1036         select HAVE_CLK
1037
1038 config PPC_LIB_RHEAP
1039         bool
1040
1041 source "arch/powerpc/kvm/Kconfig"