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 HAVE_FTRACE_MCOUNT_RECORD
  94         select HAVE_DYNAMIC_FTRACE
  95         select HAVE_FUNCTION_TRACER
  96         select HAVE_FUNCTION_GRAPH_TRACER
  97         select SYSCTL_EXCEPTION_TRACE
  98         select ARCH_WANT_OPTIONAL_GPIOLIB
  99         select VIRT_TO_BUS if !PPC64
 100         select HAVE_IDE
 101         select HAVE_IOREMAP_PROT
 102         select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_LITTLE_ENDIAN
 103         select HAVE_KPROBES
 104         select HAVE_ARCH_KGDB
 105         select HAVE_KRETPROBES
 106         select HAVE_ARCH_TRACEHOOK
 107         select HAVE_MEMBLOCK
 108         select HAVE_MEMBLOCK_NODE_MAP
 109         select HAVE_DMA_ATTRS
 110         select HAVE_DMA_API_DEBUG
 111         select HAVE_OPROFILE
 112         select HAVE_DEBUG_KMEMLEAK
 113         select GENERIC_ATOMIC64 if PPC32
 114         select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
 115         select HAVE_PERF_EVENTS
 116         select HAVE_REGS_AND_STACK_ACCESS_API
 117         select HAVE_HW_BREAKPOINT if PERF_EVENTS && PPC_BOOK3S_64
 118         select ARCH_WANT_IPC_PARSE_VERSION
 119         select SPARSE_IRQ
 120         select IRQ_DOMAIN
 121         select GENERIC_IRQ_SHOW
 122         select GENERIC_IRQ_SHOW_LEVEL
 123         select IRQ_FORCED_THREADING
 124         select HAVE_RCU_TABLE_FREE if SMP
 125         select HAVE_SYSCALL_TRACEPOINTS
 126         select HAVE_BPF_JIT if PPC64
 127         select HAVE_ARCH_JUMP_LABEL
 128         select ARCH_HAVE_NMI_SAFE_CMPXCHG
 129         select GENERIC_SMP_IDLE_THREAD
 130         select GENERIC_CMOS_UPDATE
 131         select GENERIC_TIME_VSYSCALL_OLD
 132         select GENERIC_CLOCKEVENTS
 133         select GENERIC_STRNCPY_FROM_USER
 134         select GENERIC_STRNLEN_USER
 135         select HAVE_MOD_ARCH_SPECIFIC
 136         select MODULES_USE_ELF_RELA
 137         select CLONE_BACKWARDS
 138         select ARCH_USE_BUILTIN_BSWAP
 139         select OLD_SIGSUSPEND
 140         select OLD_SIGACTION if PPC32
 141         select HAVE_DEBUG_STACKOVERFLOW
 142         select HAVE_IRQ_EXIT_ON_IRQ_STACK
 143
 144 config GENERIC_CSUM
 145         def_bool CPU_LITTLE_ENDIAN
 146
 147 config EARLY_PRINTK
 148         bool
 149         default y
 150
 151 config PANIC_TIMEOUT
 152         int
 153         default 180
 154
 155 config COMPAT
 156         bool
 157         default y if PPC64
 158         select COMPAT_BINFMT_ELF
 159         select ARCH_WANT_OLD_COMPAT_IPC
 160         select COMPAT_OLD_SIGACTION
 161
 162 config SYSVIPC_COMPAT
 163         bool
 164         depends on COMPAT && SYSVIPC
 165         default y
 166
 167 # All PPC32s use generic nvram driver through ppc_md
 168 config GENERIC_NVRAM
 169         bool
 170         default y if PPC32
 171
 172 config SCHED_OMIT_FRAME_POINTER
 173         bool
 174         default y
 175
 176 config ARCH_MAY_HAVE_PC_FDC
 177         bool
 178         default !PPC_PSERIES || PCI
 179
 180 config PPC_OF
 181         def_bool y
 182
 183 config PPC_UDBG_16550
 184         bool
 185         default n
 186
 187 config GENERIC_TBSYNC
 188         bool
 189         default y if PPC32 && SMP
 190         default n
 191
 192 config AUDIT_ARCH
 193         bool
 194         default y
 195
 196 config GENERIC_BUG
 197         bool
 198         default y
 199         depends on BUG
 200
 201 config SYS_SUPPORTS_APM_EMULATION
 202         default y if PMAC_APM_EMU
 203         bool
 204
 205 config EPAPR_BOOT
 206         bool
 207         help
 208           Used to allow a board to specify it wants an ePAPR compliant wrapper.
 209         default n
 210
 211 config DEFAULT_UIMAGE
 212         bool
 213         help
 214           Used to allow a board to specify it wants a uImage built by default
 215         default n
 216
 217 config REDBOOT
 218         bool
 219
 220 config ARCH_HIBERNATION_POSSIBLE
 221         bool
 222         default y
 223
 224 config ARCH_SUSPEND_POSSIBLE
 225         def_bool y
 226         depends on ADB_PMU || PPC_EFIKA || PPC_LITE5200 || PPC_83xx || \
 227                    (PPC_85xx && !PPC_E500MC) || PPC_86xx || PPC_PSERIES \
 228                    || 44x || 40x
 229
 230 config PPC_DCR_NATIVE
 231         bool
 232         default n
 233
 234 config PPC_DCR_MMIO
 235         bool
 236         default n
 237
 238 config PPC_DCR
 239         bool
 240         depends on PPC_DCR_NATIVE || PPC_DCR_MMIO
 241         default y
 242
 243 config PPC_OF_PLATFORM_PCI
 244         bool
 245         depends on PCI
 246         depends on PPC64 # not supported on 32 bits yet
 247         default n
 248
 249 config ARCH_SUPPORTS_DEBUG_PAGEALLOC
 250         def_bool y
 251
 252 config ARCH_SUPPORTS_UPROBES
 253         def_bool y
 254
 255 config PPC_ADV_DEBUG_REGS
 256         bool
 257         depends on 40x || BOOKE
 258         default y
 259
 260 config PPC_ADV_DEBUG_IACS
 261         int
 262         depends on PPC_ADV_DEBUG_REGS
 263         default 4 if 44x
 264         default 2
 265
 266 config PPC_ADV_DEBUG_DACS
 267         int
 268         depends on PPC_ADV_DEBUG_REGS
 269         default 2
 270
 271 config PPC_ADV_DEBUG_DVCS
 272         int
 273         depends on PPC_ADV_DEBUG_REGS
 274         default 2 if 44x
 275         default 0
 276
 277 config PPC_ADV_DEBUG_DAC_RANGE
 278         bool
 279         depends on PPC_ADV_DEBUG_REGS && 44x
 280         default y
 281
 282 config PPC_EMULATE_SSTEP
 283         bool
 284         default y if KPROBES || UPROBES || XMON || HAVE_HW_BREAKPOINT
 285
 286 source "init/Kconfig"
 287
 288 source "kernel/Kconfig.freezer"
 289
 290 source "arch/powerpc/sysdev/Kconfig"
 291 source "arch/powerpc/platforms/Kconfig"
 292
 293 menu "Kernel options"
 294
 295 config HIGHMEM
 296         bool "High memory support"
 297         depends on PPC32
 298
 299 source kernel/Kconfig.hz
 300 source kernel/Kconfig.preempt
 301 source "fs/Kconfig.binfmt"
 302
 303 config HUGETLB_PAGE_SIZE_VARIABLE
 304         bool
 305         depends on HUGETLB_PAGE
 306         default y
 307
 308 config MATH_EMULATION
 309         bool "Math emulation"
 310         depends on 4xx || 8xx || PPC_MPC832x || BOOKE
 311         ---help---
 312           Some PowerPC chips designed for embedded applications do not have
 313           a floating-point unit and therefore do not implement the
 314           floating-point instructions in the PowerPC instruction set.  If you
 315           say Y here, the kernel will include code to emulate a floating-point
 316           unit, which will allow programs that use floating-point
 317           instructions to run.
 318
 319           This is also useful to emulate missing (optional) instructions
 320           such as fsqrt on cores that do have an FPU but do not implement
 321           them (such as Freescale BookE).
 322
 323 choice
 324         prompt "Math emulation options"
 325         default MATH_EMULATION_FULL
 326         depends on MATH_EMULATION
 327
 328 config  MATH_EMULATION_FULL
 329         bool "Emulate all the floating point instructions"
 330         ---help---
 331           Select this option will enable the kernel to support to emulate
 332           all the floating point instructions. If your SoC doesn't have
 333           a FPU, you should select this.
 334
 335 config MATH_EMULATION_HW_UNIMPLEMENTED
 336         bool "Just emulate the FPU unimplemented instructions"
 337         ---help---
 338           Select this if you know there does have a hardware FPU on your
 339           SoC, but some floating point instructions are not implemented by that.
 340
 341 endchoice
 342
 343 config PPC_TRANSACTIONAL_MEM
 344        bool "Transactional Memory support for POWERPC"
 345        depends on PPC_BOOK3S_64
 346        depends on SMP
 347        default n
 348        ---help---
 349          Support user-mode Transactional Memory on POWERPC.
 350
 351 config IOMMU_HELPER
 352         def_bool PPC64
 353
 354 config SWIOTLB
 355         bool "SWIOTLB support"
 356         default n
 357         select IOMMU_HELPER
 358         ---help---
 359           Support for IO bounce buffering for systems without an IOMMU.
 360           This allows us to DMA to the full physical address space on
 361           platforms where the size of a physical address is larger
 362           than the bus address.  Not all platforms support this.
 363
 364 config HOTPLUG_CPU
 365         bool "Support for enabling/disabling CPUs"
 366         depends on SMP && (PPC_PSERIES || \
 367         PPC_PMAC || PPC_POWERNV || (PPC_85xx && !PPC_E500MC))
 368         ---help---
 369           Say Y here to be able to disable and re-enable individual
 370           CPUs at runtime on SMP machines.
 371
 372           Say N if you are unsure.
 373
 374 config ARCH_CPU_PROBE_RELEASE
 375         def_bool y
 376         depends on HOTPLUG_CPU
 377
 378 config ARCH_ENABLE_MEMORY_HOTPLUG
 379         def_bool y
 380
 381 config ARCH_HAS_WALK_MEMORY
 382         def_bool y
 383
 384 config ARCH_ENABLE_MEMORY_HOTREMOVE
 385         def_bool y
 386
 387 config KEXEC
 388         bool "kexec system call"
 389         depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
 390         help
 391           kexec is a system call that implements the ability to shutdown your
 392           current kernel, and to start another kernel.  It is like a reboot
 393           but it is independent of the system firmware.   And like a reboot
 394           you can start any kernel with it, not just Linux.
 395
 396           The name comes from the similarity to the exec system call.
 397
 398           It is an ongoing process to be certain the hardware in a machine
 399           is properly shutdown, so do not be surprised if this code does not
 400           initially work for you.  As of this writing the exact hardware
 401           interface is strongly in flux, so no good recommendation can be
 402           made.
 403
 404 config CRASH_DUMP
 405         bool "Build a kdump crash kernel"
 406         depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP)
 407         select RELOCATABLE if PPC64 || 44x
 408         select DYNAMIC_MEMSTART if FSL_BOOKE
 409         help
 410           Build a kernel suitable for use as a kdump capture kernel.
 411           The same kernel binary can be used as production kernel and dump
 412           capture kernel.
 413
 414 config FA_DUMP
 415         bool "Firmware-assisted dump"
 416         depends on PPC64 && PPC_RTAS && CRASH_DUMP && KEXEC
 417         help
 418           A robust mechanism to get reliable kernel crash dump with
 419           assistance from firmware. This approach does not use kexec,
 420           instead firmware assists in booting the kdump kernel
 421           while preserving memory contents. Firmware-assisted dump
 422           is meant to be a kdump replacement offering robustness and
 423           speed not possible without system firmware assistance.
 424
 425           If unsure, say "N"
 426
 427 config IRQ_ALL_CPUS
 428         bool "Distribute interrupts on all CPUs by default"
 429         depends on SMP
 430         help
 431           This option gives the kernel permission to distribute IRQs across
 432           multiple CPUs.  Saying N here will route all IRQs to the first
 433           CPU.  Generally saying Y is safe, although some problems have been
 434           reported with SMP Power Macintoshes with this option enabled.
 435
 436 config NUMA
 437         bool "NUMA support"
 438         depends on PPC64
 439         default y if SMP && PPC_PSERIES
 440
 441 config NODES_SHIFT
 442         int
 443         default "8" if PPC64
 444         default "4"
 445         depends on NEED_MULTIPLE_NODES
 446
 447 config ARCH_SELECT_MEMORY_MODEL
 448         def_bool y
 449         depends on PPC64
 450
 451 config ARCH_FLATMEM_ENABLE
 452         def_bool y
 453         depends on (PPC64 && !NUMA) || PPC32
 454
 455 config ARCH_SPARSEMEM_ENABLE
 456         def_bool y
 457         depends on PPC64
 458         select SPARSEMEM_VMEMMAP_ENABLE
 459
 460 config ARCH_SPARSEMEM_DEFAULT
 461         def_bool y
 462         depends on (SMP && PPC_PSERIES) || PPC_PS3
 463
 464 config SYS_SUPPORTS_HUGETLBFS
 465         bool
 466
 467 source "mm/Kconfig"
 468
 469 config ARCH_MEMORY_PROBE
 470         def_bool y
 471         depends on MEMORY_HOTPLUG
 472
 473 # Some NUMA nodes have memory ranges that span
 474 # other nodes.  Even though a pfn is valid and
 475 # between a node's start and end pfns, it may not
 476 # reside on that node.  See memmap_init_zone()
 477 # for details.
 478 config NODES_SPAN_OTHER_NODES
 479         def_bool y
 480         depends on NEED_MULTIPLE_NODES
 481
 482 config PPC_HAS_HASH_64K
 483         bool
 484         depends on PPC64
 485         default n
 486
 487 config STDBINUTILS
 488         bool "Using standard binutils settings"
 489         depends on 44x
 490         default y
 491         help
 492           Turning this option off allows you to select 256KB PAGE_SIZE on 44x.
 493           Note, that kernel will be able to run only those applications,
 494           which had been compiled using binutils later than 2.17.50.0.3 with
 495           '-zmax-page-size' set to 256K (the default is 64K). Or, if using
 496           the older binutils, you can patch them with a trivial patch, which
 497           changes the ELF_MAXPAGESIZE definition from 0x10000 to 0x40000.
 498
 499 choice
 500         prompt "Page size"
 501         default PPC_4K_PAGES
 502         help
 503           Select the kernel logical page size. Increasing the page size
 504           will reduce software overhead at each page boundary, allow
 505           hardware prefetch mechanisms to be more effective, and allow
 506           larger dma transfers increasing IO efficiency and reducing
 507           overhead. However the utilization of memory will increase.
 508           For example, each cached file will using a multiple of the
 509           page size to hold its contents and the difference between the
 510           end of file and the end of page is wasted.
 511
 512           Some dedicated systems, such as software raid serving with
 513           accelerated calculations, have shown significant increases.
 514
 515           If you configure a 64 bit kernel for 64k pages but the
 516           processor does not support them, then the kernel will simulate
 517           them with 4k pages, loading them on demand, but with the
 518           reduced software overhead and larger internal fragmentation.
 519           For the 32 bit kernel, a large page option will not be offered
 520           unless it is supported by the configured processor.
 521
 522           If unsure, choose 4K_PAGES.
 523
 524 config PPC_4K_PAGES
 525         bool "4k page size"
 526
 527 config PPC_16K_PAGES
 528         bool "16k page size" if 44x
 529
 530 config PPC_64K_PAGES
 531         bool "64k page size" if 44x || PPC_STD_MMU_64 || PPC_BOOK3E_64
 532         select PPC_HAS_HASH_64K if PPC_STD_MMU_64
 533
 534 config PPC_256K_PAGES
 535         bool "256k page size" if 44x
 536         depends on !STDBINUTILS
 537         help
 538           Make the page size 256k.
 539
 540           As the ELF standard only requires alignment to support page
 541           sizes up to 64k, you will need to compile all of your user
 542           space applications with a non-standard binutils settings
 543           (see the STDBINUTILS description for details).
 544
 545           Say N unless you know what you are doing.
 546
 547 endchoice
 548
 549 config FORCE_MAX_ZONEORDER
 550         int "Maximum zone order"
 551         range 9 64 if PPC64 && PPC_64K_PAGES
 552         default "9" if PPC64 && PPC_64K_PAGES
 553         range 13 64 if PPC64 && !PPC_64K_PAGES
 554         default "13" if PPC64 && !PPC_64K_PAGES
 555         range 9 64 if PPC32 && PPC_16K_PAGES
 556         default "9" if PPC32 && PPC_16K_PAGES
 557         range 7 64 if PPC32 && PPC_64K_PAGES
 558         default "7" if PPC32 && PPC_64K_PAGES
 559         range 5 64 if PPC32 && PPC_256K_PAGES
 560         default "5" if PPC32 && PPC_256K_PAGES
 561         range 11 64
 562         default "11"
 563         help
 564           The kernel memory allocator divides physically contiguous memory
 565           blocks into "zones", where each zone is a power of two number of
 566           pages.  This option selects the largest power of two that the kernel
 567           keeps in the memory allocator.  If you need to allocate very large
 568           blocks of physically contiguous memory, then you may need to
 569           increase this value.
 570
 571           This config option is actually maximum order plus one. For example,
 572           a value of 11 means that the largest free memory block is 2^10 pages.
 573
 574           The page size is not necessarily 4KB.  For example, on 64-bit
 575           systems, 64KB pages can be enabled via CONFIG_PPC_64K_PAGES.  Keep
 576           this in mind when choosing a value for this option.
 577
 578 config PPC_SUBPAGE_PROT
 579         bool "Support setting protections for 4k subpages"
 580         depends on PPC_STD_MMU_64 && PPC_64K_PAGES
 581         help
 582           This option adds support for a system call to allow user programs
 583           to set access permissions (read/write, readonly, or no access)
 584           on the 4k subpages of each 64k page.
 585
 586 config SCHED_SMT
 587         bool "SMT (Hyperthreading) scheduler support"
 588         depends on PPC64 && SMP
 589         help
 590           SMT scheduler support improves the CPU scheduler's decision making
 591           when dealing with POWER5 cpus at a cost of slightly increased
 592           overhead in some places. If unsure say N here.
 593
 594 config PPC_DENORMALISATION
 595         bool "PowerPC denormalisation exception handling"
 596         depends on PPC_BOOK3S_64
 597         default "y" if PPC_POWERNV
 598         ---help---
 599           Add support for handling denormalisation of single precision
 600           values.  Useful for bare metal only.  If unsure say Y here.
 601
 602 config CMDLINE_BOOL
 603         bool "Default bootloader kernel arguments"
 604
 605 config CMDLINE
 606         string "Initial kernel command string"
 607         depends on CMDLINE_BOOL
 608         default "console=ttyS0,9600 console=tty0 root=/dev/sda2"
 609         help
 610           On some platforms, there is currently no way for the boot loader to
 611           pass arguments to the kernel. For these platforms, you can supply
 612           some command-line options at build time by entering them here.  In
 613           most cases you will need to specify the root device here.
 614
 615 config EXTRA_TARGETS
 616         string "Additional default image types"
 617         help
 618           List additional targets to be built by the bootwrapper here (separated
 619           by spaces).  This is useful for targets that depend of device tree
 620           files in the .dts directory.
 621
 622           Targets in this list will be build as part of the default build
 623           target, or when the user does a 'make zImage' or a
 624           'make zImage.initrd'.
 625
 626           If unsure, leave blank
 627
 628 config ARCH_WANTS_FREEZER_CONTROL
 629         def_bool y
 630         depends on ADB_PMU
 631
 632 source kernel/power/Kconfig
 633
 634 config SECCOMP
 635         bool "Enable seccomp to safely compute untrusted bytecode"
 636         depends on PROC_FS
 637         default y
 638         help
 639           This kernel feature is useful for number crunching applications
 640           that may need to compute untrusted bytecode during their
 641           execution. By using pipes or other transports made available to
 642           the process as file descriptors supporting the read/write
 643           syscalls, it's possible to isolate those applications in
 644           their own address space using seccomp. Once seccomp is
 645           enabled via /proc/<pid>/seccomp, it cannot be disabled
 646           and the task is only allowed to execute a few safe syscalls
 647           defined by each seccomp mode.
 648
 649           If unsure, say Y. Only embedded should say N here.
 650
 651 endmenu
 652
 653 config ISA_DMA_API
 654         bool
 655         default PCI
 656
 657 menu "Bus options"
 658
 659 config ISA
 660         bool "Support for ISA-bus hardware"
 661         depends on PPC_CHRP
 662         select PPC_I8259
 663         help
 664           Find out whether you have ISA slots on your motherboard.  ISA is the
 665           name of a bus system, i.e. the way the CPU talks to the other stuff
 666           inside your box.  If you have an Apple machine, say N here; if you
 667           have an IBM RS/6000 or pSeries machine, say Y.  If you have an
 668           embedded board, consult your board documentation.
 669
 670 config ZONE_DMA
 671         bool
 672         default y
 673
 674 config NEED_DMA_MAP_STATE
 675         def_bool (PPC64 || NOT_COHERENT_CACHE)
 676
 677 config NEED_SG_DMA_LENGTH
 678         def_bool y
 679
 680 config GENERIC_ISA_DMA
 681         bool
 682         depends on ISA_DMA_API
 683         default y
 684
 685 config PPC_INDIRECT_PCI
 686         bool
 687         depends on PCI
 688         default y if 40x || 44x
 689         default n
 690
 691 config EISA
 692         bool
 693
 694 config SBUS
 695         bool
 696
 697 config FSL_SOC
 698         bool
 699
 700 config FSL_PCI
 701         bool
 702         select PPC_INDIRECT_PCI
 703         select PCI_QUIRKS
 704
 705 config FSL_PMC
 706         bool
 707         default y
 708         depends on SUSPEND && (PPC_85xx || PPC_86xx)
 709         help
 710           Freescale MPC85xx/MPC86xx power management controller support
 711           (suspend/resume). For MPC83xx see platforms/83xx/suspend.c
 712
 713 config PPC4xx_CPM
 714         bool
 715         default y
 716         depends on SUSPEND && (44x || 40x)
 717         help
 718           PPC4xx Clock Power Management (CPM) support (suspend/resume).
 719           It also enables support for two different idle states (idle-wait
 720           and idle-doze).
 721
 722 config 4xx_SOC
 723         bool
 724
 725 config FSL_LBC
 726         bool "Freescale Local Bus support"
 727         depends on FSL_SOC
 728         help
 729           Enables reporting of errors from the Freescale local bus
 730           controller.  Also contains some common code used by
 731           drivers for specific local bus peripherals.
 732
 733 config FSL_IFC
 734         bool
 735         depends on FSL_SOC
 736
 737 config FSL_GTM
 738         bool
 739         depends on PPC_83xx || QUICC_ENGINE || CPM2
 740         help
 741           Freescale General-purpose Timers support
 742
 743 # Yes MCA RS/6000s exist but Linux-PPC does not currently support any
 744 config MCA
 745         bool
 746
 747 # Platforms that what PCI turned unconditionally just do select PCI
 748 # in their config node.  Platforms that want to choose at config
 749 # time should select PPC_PCI_CHOICE
 750 config PPC_PCI_CHOICE
 751         bool
 752
 753 config PCI
 754         bool "PCI support" if PPC_PCI_CHOICE
 755         default y if !40x && !CPM2 && !8xx && !PPC_83xx \
 756                 && !PPC_85xx && !PPC_86xx && !GAMECUBE_COMMON
 757         default PCI_QSPAN if !4xx && !CPM2 && 8xx
 758         select GENERIC_PCI_IOMAP
 759         help
 760           Find out whether your system includes a PCI bus. PCI is the name of
 761           a bus system, i.e. the way the CPU talks to the other stuff inside
 762           your box.  If you say Y here, the kernel will include drivers and
 763           infrastructure code to support PCI bus devices.
 764
 765 config PCI_DOMAINS
 766         def_bool PCI
 767
 768 config PCI_SYSCALL
 769         def_bool PCI
 770
 771 config PCI_QSPAN
 772         bool "QSpan PCI"
 773         depends on !4xx && !CPM2 && 8xx
 774         select PPC_I8259
 775         help
 776           Say Y here if you have a system based on a Motorola 8xx-series
 777           embedded processor with a QSPAN PCI interface, otherwise say N.
 778
 779 config PCI_8260
 780         bool
 781         depends on PCI && 8260
 782         select PPC_INDIRECT_PCI
 783         default y
 784
 785 source "drivers/pci/pcie/Kconfig"
 786
 787 source "drivers/pci/Kconfig"
 788
 789 source "drivers/pcmcia/Kconfig"
 790
 791 source "drivers/pci/hotplug/Kconfig"
 792
 793 config HAS_RAPIDIO
 794         bool
 795         default n
 796
 797 config RAPIDIO
 798         tristate "RapidIO support"
 799         depends on HAS_RAPIDIO || PCI
 800         help
 801           If you say Y here, the kernel will include drivers and
 802           infrastructure code to support RapidIO interconnect devices.
 803
 804 config FSL_RIO
 805         bool "Freescale Embedded SRIO Controller support"
 806         depends on RAPIDIO = y && HAS_RAPIDIO
 807         default "n"
 808         ---help---
 809           Include support for RapidIO controller on Freescale embedded
 810           processors (MPC8548, MPC8641, etc).
 811
 812 source "drivers/rapidio/Kconfig"
 813
 814 endmenu
 815
 816 config NONSTATIC_KERNEL
 817         bool
 818         default n
 819
 820 menu "Advanced setup"
 821         depends on PPC32
 822
 823 config ADVANCED_OPTIONS
 824         bool "Prompt for advanced kernel configuration options"
 825         help
 826           This option will enable prompting for a variety of advanced kernel
 827           configuration options.  These options can cause the kernel to not
 828           work if they are set incorrectly, but can be used to optimize certain
 829           aspects of kernel memory management.
 830
 831           Unless you know what you are doing, say N here.
 832
 833 comment "Default settings for advanced configuration options are used"
 834         depends on !ADVANCED_OPTIONS
 835
 836 config LOWMEM_SIZE_BOOL
 837         bool "Set maximum low memory"
 838         depends on ADVANCED_OPTIONS
 839         help
 840           This option allows you to set the maximum amount of memory which
 841           will be used as "low memory", that is, memory which the kernel can
 842           access directly, without having to set up a kernel virtual mapping.
 843           This can be useful in optimizing the layout of kernel virtual
 844           memory.
 845
 846           Say N here unless you know what you are doing.
 847
 848 config LOWMEM_SIZE
 849         hex "Maximum low memory size (in bytes)" if LOWMEM_SIZE_BOOL
 850         default "0x30000000"
 851
 852 config LOWMEM_CAM_NUM_BOOL
 853         bool "Set number of CAMs to use to map low memory"
 854         depends on ADVANCED_OPTIONS && FSL_BOOKE
 855         help
 856           This option allows you to set the maximum number of CAM slots that
 857           will be used to map low memory.  There are a limited number of slots
 858           available and even more limited number that will fit in the L1 MMU.
 859           However, using more entries will allow mapping more low memory.  This
 860           can be useful in optimizing the layout of kernel virtual memory.
 861
 862           Say N here unless you know what you are doing.
 863
 864 config LOWMEM_CAM_NUM
 865         depends on FSL_BOOKE
 866         int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL
 867         default 3
 868
 869 config DYNAMIC_MEMSTART
 870         bool "Enable page aligned dynamic load address for kernel"
 871         depends on ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || 44x)
 872         select NONSTATIC_KERNEL
 873         help
 874           This option enables the kernel to be loaded at any page aligned
 875           physical address. The kernel creates a mapping from KERNELBASE to
 876           the address where the kernel is loaded. The page size here implies
 877           the TLB page size of the mapping for kernel on the particular platform.
 878           Please refer to the init code for finding the TLB page size.
 879
 880           DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE
 881           kernel image, where the only restriction is the page aligned kernel
 882           load address. When this option is enabled, the compile time physical
 883           address CONFIG_PHYSICAL_START is ignored.
 884
 885           This option is overridden by CONFIG_RELOCATABLE
 886
 887 config RELOCATABLE
 888         bool "Build a relocatable kernel"
 889         depends on ADVANCED_OPTIONS && FLATMEM && 44x
 890         select NONSTATIC_KERNEL
 891         help
 892           This builds a kernel image that is capable of running at the
 893           location the kernel is loaded at, without any alignment restrictions.
 894           This feature is a superset of DYNAMIC_MEMSTART and hence overrides it.
 895
 896           One use is for the kexec on panic case where the recovery kernel
 897           must live at a different physical address than the primary
 898           kernel.
 899
 900           Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address
 901           it has been loaded at and the compile time physical addresses
 902           CONFIG_PHYSICAL_START is ignored.  However CONFIG_PHYSICAL_START
 903           setting can still be useful to bootwrappers that need to know the
 904           load address of the kernel (eg. u-boot/mkimage).
 905
 906 config RELOCATABLE_PPC32
 907         def_bool y
 908         depends on PPC32 && RELOCATABLE
 909
 910 config PAGE_OFFSET_BOOL
 911         bool "Set custom page offset address"
 912         depends on ADVANCED_OPTIONS
 913         help
 914           This option allows you to set the kernel virtual address at which
 915           the kernel will map low memory.  This can be useful in optimizing
 916           the virtual memory layout of the system.
 917
 918           Say N here unless you know what you are doing.
 919
 920 config PAGE_OFFSET
 921         hex "Virtual address of memory base" if PAGE_OFFSET_BOOL
 922         default "0xc0000000"
 923
 924 config KERNEL_START_BOOL
 925         bool "Set custom kernel base address"
 926         depends on ADVANCED_OPTIONS
 927         help
 928           This option allows you to set the kernel virtual address at which
 929           the kernel will be loaded.  Normally this should match PAGE_OFFSET
 930           however there are times (like kdump) that one might not want them
 931           to be the same.
 932
 933           Say N here unless you know what you are doing.
 934
 935 config KERNEL_START
 936         hex "Virtual address of kernel base" if KERNEL_START_BOOL
 937         default PAGE_OFFSET if PAGE_OFFSET_BOOL
 938         default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL
 939         default "0xc0000000"
 940
 941 config PHYSICAL_START_BOOL
 942         bool "Set physical address where the kernel is loaded"
 943         depends on ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
 944         help
 945           This gives the physical address where the kernel is loaded.
 946
 947           Say N here unless you know what you are doing.
 948
 949 config PHYSICAL_START
 950         hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL
 951         default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL
 952         default "0x00000000"
 953
 954 config PHYSICAL_ALIGN
 955         hex
 956         default "0x04000000" if FSL_BOOKE
 957         help
 958           This value puts the alignment restrictions on physical address
 959           where kernel is loaded and run from. Kernel is compiled for an
 960           address which meets above alignment restriction.
 961
 962 config TASK_SIZE_BOOL
 963         bool "Set custom user task size"
 964         depends on ADVANCED_OPTIONS
 965         help
 966           This option allows you to set the amount of virtual address space
 967           allocated to user tasks.  This can be useful in optimizing the
 968           virtual memory layout of the system.
 969
 970           Say N here unless you know what you are doing.
 971
 972 config TASK_SIZE
 973         hex "Size of user task space" if TASK_SIZE_BOOL
 974         default "0x80000000" if PPC_8xx
 975         default "0xc0000000"
 976
 977 config CONSISTENT_SIZE_BOOL
 978         bool "Set custom consistent memory pool size"
 979         depends on ADVANCED_OPTIONS && NOT_COHERENT_CACHE
 980         help
 981           This option allows you to set the size of the
 982           consistent memory pool.  This pool of virtual memory
 983           is used to make consistent memory allocations.
 984
 985 config CONSISTENT_SIZE
 986         hex "Size of consistent memory pool" if CONSISTENT_SIZE_BOOL
 987         default "0x00200000" if NOT_COHERENT_CACHE
 988
 989 config PIN_TLB
 990         bool "Pinned Kernel TLBs (860 ONLY)"
 991         depends on ADVANCED_OPTIONS && 8xx
 992 endmenu
 993
 994 if PPC64
 995 config RELOCATABLE
 996         bool "Build a relocatable kernel"
 997         select NONSTATIC_KERNEL
 998         help
 999           This builds a kernel image that is capable of running anywhere
1000           in the RMA (real memory area) at any 16k-aligned base address.
1001           The kernel is linked as a position-independent executable (PIE)
1002           and contains dynamic relocations which are processed early
1003           in the bootup process.
1004
1005           One use is for the kexec on panic case where the recovery kernel
1006           must live at a different physical address than the primary
1007           kernel.
1008
1009 # This value must have zeroes in the bottom 60 bits otherwise lots will break
1010 config PAGE_OFFSET
1011         hex
1012         default "0xc000000000000000"
1013 config KERNEL_START
1014         hex
1015         default "0xc000000000000000"
1016 config PHYSICAL_START
1017         hex
1018         default "0x00000000"
1019 endif
1020
1021 config  ARCH_RANDOM
1022         def_bool n
1023
1024 source "net/Kconfig"
1025
1026 source "drivers/Kconfig"
1027
1028 source "fs/Kconfig"
1029
1030 source "arch/powerpc/sysdev/qe_lib/Kconfig"
1031
1032 source "lib/Kconfig"
1033
1034 source "arch/powerpc/Kconfig.debug"
1035
1036 source "security/Kconfig"
1037
1038 config KEYS_COMPAT
1039         bool
1040         depends on COMPAT && KEYS
1041         default y
1042
1043 source "crypto/Kconfig"
1044
1045 config PPC_CLOCK
1046         bool
1047         default n
1048         select HAVE_CLK
1049
1050 config PPC_LIB_RHEAP
1051         bool
1052
1053 source "arch/powerpc/kvm/Kconfig"