arch/ia64/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "IA-64 Linux Kernel Configuration"
   7
   8 source "init/Kconfig"
   9
  10 source "kernel/Kconfig.freezer"
  11
  12 menu "Processor type and features"
  13
  14 config IA64
  15         bool
  16         select PCI if (!IA64_HP_SIM)
  17         select ACPI if (!IA64_HP_SIM)
  18         select PM if (!IA64_HP_SIM)
  19         select ARCH_SUPPORTS_MSI
  20         select HAVE_UNSTABLE_SCHED_CLOCK
  21         select HAVE_IDE
  22         select HAVE_OPROFILE
  23         select HAVE_KPROBES
  24         select HAVE_KRETPROBES
  25         select HAVE_FTRACE_MCOUNT_RECORD
  26         select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
  27         select HAVE_FUNCTION_TRACER
  28         select HAVE_DMA_ATTRS
  29         select HAVE_KVM
  30         select HAVE_ARCH_TRACEHOOK
  31         select HAVE_DMA_API_DEBUG
  32         default y
  33         help
  34           The Itanium Processor Family is Intel's 64-bit successor to
  35           the 32-bit X86 line.  The IA-64 Linux project has a home
  36           page at <http://www.linuxia64.org/> and a mailing list at
  37           <linux-ia64@vger.kernel.org>.
  38
  39 config 64BIT
  40         bool
  41         select ATA_NONSTANDARD if ATA
  42         default y
  43
  44 config ZONE_DMA
  45         def_bool y
  46         depends on !IA64_SGI_SN2
  47
  48 config QUICKLIST
  49         bool
  50         default y
  51
  52 config MMU
  53         bool
  54         default y
  55
  56 config SWIOTLB
  57        bool
  58
  59 config IOMMU_HELPER
  60        bool
  61
  62 config GENERIC_LOCKBREAK
  63         def_bool n
  64
  65 config RWSEM_XCHGADD_ALGORITHM
  66         bool
  67         default y
  68
  69 config HUGETLB_PAGE_SIZE_VARIABLE
  70         bool
  71         depends on HUGETLB_PAGE
  72         default y
  73
  74 config GENERIC_FIND_NEXT_BIT
  75         bool
  76         default y
  77
  78 config GENERIC_CALIBRATE_DELAY
  79         bool
  80         default y
  81
  82 config GENERIC_TIME
  83         bool
  84         default y
  85
  86 config GENERIC_TIME_VSYSCALL
  87         bool
  88         default y
  89
  90 config HAVE_LEGACY_PER_CPU_AREA
  91         def_bool y
  92
  93 config HAVE_SETUP_PER_CPU_AREA
  94         def_bool y
  95
  96 config DMI
  97         bool
  98         default y
  99
 100 config EFI
 101         bool
 102         default y
 103
 104 config GENERIC_IOMAP
 105         bool
 106         default y
 107
 108 config SCHED_OMIT_FRAME_POINTER
 109         bool
 110         default y
 111
 112 config IA64_UNCACHED_ALLOCATOR
 113         bool
 114         select GENERIC_ALLOCATOR
 115
 116 config ARCH_USES_PG_UNCACHED
 117         def_bool y
 118         depends on IA64_UNCACHED_ALLOCATOR
 119
 120 config AUDIT_ARCH
 121         bool
 122         default y
 123
 124 menuconfig PARAVIRT_GUEST
 125         bool "Paravirtualized guest support"
 126         help
 127           Say Y here to get to see options related to running Linux under
 128           various hypervisors.  This option alone does not add any kernel code.
 129
 130           If you say N, all options in this submenu will be skipped and disabled.
 131
 132 if PARAVIRT_GUEST
 133
 134 config PARAVIRT
 135         bool "Enable paravirtualization code"
 136         depends on PARAVIRT_GUEST
 137         default y
 138         bool
 139         default y
 140         help
 141           This changes the kernel so it can modify itself when it is run
 142           under a hypervisor, potentially improving performance significantly
 143           over full virtualization.  However, when run without a hypervisor
 144           the kernel is theoretically slower and slightly larger.
 145
 146
 147 source "arch/ia64/xen/Kconfig"
 148
 149 endif
 150
 151 choice
 152         prompt "System type"
 153         default IA64_GENERIC
 154
 155 config IA64_GENERIC
 156         bool "generic"
 157         select NUMA
 158         select ACPI_NUMA
 159         select SWIOTLB
 160         select PCI_MSI
 161         select DMAR
 162         help
 163           This selects the system type of your hardware.  A "generic" kernel
 164           will run on any supported IA-64 system.  However, if you configure
 165           a kernel for your specific system, it will be faster and smaller.
 166
 167           generic               For any supported IA-64 system
 168           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 169           DIG+Intel+IOMMU       For DIG systems with Intel IOMMU
 170           HP-zx1/sx1000         For HP systems
 171           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 172           SGI-SN2               For SGI Altix systems
 173           SGI-UV                For SGI UV systems
 174           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 175           Xen-domU              For xen domU system
 176
 177           If you don't know what to do, choose "generic".
 178
 179 config IA64_DIG
 180         bool "DIG-compliant"
 181         select SWIOTLB
 182
 183 config IA64_DIG_VTD
 184         bool "DIG+Intel+IOMMU"
 185         select DMAR
 186         select PCI_MSI
 187
 188 config IA64_HP_ZX1
 189         bool "HP-zx1/sx1000"
 190         help
 191           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 192           support for the HP I/O MMU.
 193
 194 config IA64_HP_ZX1_SWIOTLB
 195         bool "HP-zx1/sx1000 with software I/O TLB"
 196         select SWIOTLB
 197         help
 198           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 199           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 200           from support for the HP I/O MMU, this includes support for the software
 201           I/O TLB, which allows supporting the broken devices at the expense of
 202           wasting some kernel memory (about 2MB by default).
 203
 204 config IA64_SGI_SN2
 205         bool "SGI-SN2"
 206         select NUMA
 207         select ACPI_NUMA
 208         help
 209           Selecting this option will optimize the kernel for use on sn2 based
 210           systems, but the resulting kernel binary will not run on other
 211           types of ia64 systems.  If you have an SGI Altix system, it's safe
 212           to select this option.  If in doubt, select ia64 generic support
 213           instead.
 214
 215 config IA64_SGI_UV
 216         bool "SGI-UV"
 217         select NUMA
 218         select ACPI_NUMA
 219         select SWIOTLB
 220         help
 221           Selecting this option will optimize the kernel for use on UV based
 222           systems, but the resulting kernel binary will not run on other
 223           types of ia64 systems.  If you have an SGI UV system, it's safe
 224           to select this option.  If in doubt, select ia64 generic support
 225           instead.
 226
 227 config IA64_HP_SIM
 228         bool "Ski-simulator"
 229         select SWIOTLB
 230
 231 config IA64_XEN_GUEST
 232         bool "Xen guest"
 233         select SWIOTLB
 234         depends on XEN
 235         help
 236           Build a kernel that runs on Xen guest domain. At this moment only
 237           16KB page size in supported.
 238
 239 endchoice
 240
 241 choice
 242         prompt "Processor type"
 243         default ITANIUM
 244
 245 config ITANIUM
 246         bool "Itanium"
 247         help
 248           Select your IA-64 processor type.  The default is Itanium.
 249           This choice is safe for all IA-64 systems, but may not perform
 250           optimally on systems with, say, Itanium 2 or newer processors.
 251
 252 config MCKINLEY
 253         bool "Itanium 2"
 254         help
 255           Select this to configure for an Itanium 2 (McKinley) processor.
 256
 257 endchoice
 258
 259 choice
 260         prompt "Kernel page size"
 261         default IA64_PAGE_SIZE_16KB
 262
 263 config IA64_PAGE_SIZE_4KB
 264         bool "4KB"
 265         help
 266           This lets you select the page size of the kernel.  For best IA-64
 267           performance, a page size of 8KB or 16KB is recommended.  For best
 268           IA-32 compatibility, a page size of 4KB should be selected (the vast
 269           majority of IA-32 binaries work perfectly fine with a larger page
 270           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 271           be selected.
 272
 273           4KB                For best IA-32 compatibility
 274           8KB                For best IA-64 performance
 275           16KB               For best IA-64 performance
 276           64KB               Requires Itanium 2 or newer processor.
 277
 278           If you don't know what to do, choose 16KB.
 279
 280 config IA64_PAGE_SIZE_8KB
 281         bool "8KB"
 282
 283 config IA64_PAGE_SIZE_16KB
 284         bool "16KB"
 285
 286 config IA64_PAGE_SIZE_64KB
 287         depends on !ITANIUM
 288         bool "64KB"
 289
 290 endchoice
 291
 292 choice
 293         prompt "Page Table Levels"
 294         default PGTABLE_3
 295
 296 config PGTABLE_3
 297         bool "3 Levels"
 298
 299 config PGTABLE_4
 300         depends on !IA64_PAGE_SIZE_64KB
 301         bool "4 Levels"
 302
 303 endchoice
 304
 305 if IA64_HP_SIM
 306 config HZ
 307         default 32
 308 endif
 309
 310 if !IA64_HP_SIM
 311 source kernel/Kconfig.hz
 312 endif
 313
 314 config IA64_BRL_EMU
 315         bool
 316         depends on ITANIUM
 317         default y
 318
 319 # align cache-sensitive data to 128 bytes
 320 config IA64_L1_CACHE_SHIFT
 321         int
 322         default "7" if MCKINLEY
 323         default "6" if ITANIUM
 324
 325 config IA64_CYCLONE
 326         bool "Cyclone (EXA) Time Source support"
 327         help
 328           Say Y here to enable support for IBM EXA Cyclone time source.
 329           If you're unsure, answer N.
 330
 331 config IOSAPIC
 332         bool
 333         depends on !IA64_HP_SIM
 334         default y
 335
 336 config FORCE_MAX_ZONEORDER
 337         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 338         range 11 17  if !HUGETLB_PAGE
 339         default "17" if HUGETLB_PAGE
 340         default "11"
 341
 342 config VIRT_CPU_ACCOUNTING
 343         bool "Deterministic task and CPU time accounting"
 344         default n
 345         help
 346           Select this option to enable more accurate task and CPU time
 347           accounting.  This is done by reading a CPU counter on each
 348           kernel entry and exit and on transitions within the kernel
 349           between system, softirq and hardirq state, so there is a
 350           small performance impact.
 351           If in doubt, say N here.
 352
 353 config SMP
 354         bool "Symmetric multi-processing support"
 355         select USE_GENERIC_SMP_HELPERS
 356         help
 357           This enables support for systems with more than one CPU. If you have
 358           a system with only one CPU, say N.  If you have a system with more
 359           than one CPU, say Y.
 360
 361           If you say N here, the kernel will run on single and multiprocessor
 362           systems, but will use only one CPU of a multiprocessor system.  If
 363           you say Y here, the kernel will run on many, but not all,
 364           single processor systems.  On a single processor system, the kernel
 365           will run faster if you say N here.
 366
 367           See also the SMP-HOWTO available at
 368           <http://www.tldp.org/docs.html#howto>.
 369
 370           If you don't know what to do here, say N.
 371
 372 config NR_CPUS
 373         int "Maximum number of CPUs (2-4096)"
 374         range 2 4096
 375         depends on SMP
 376         default "4096"
 377         help
 378           You should set this to the number of CPUs in your system, but
 379           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 380           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 381           than 64 will cause the use of a CPU mask array, causing a small
 382           performance hit.
 383
 384 config HOTPLUG_CPU
 385         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 386         depends on SMP && EXPERIMENTAL
 387         select HOTPLUG
 388         default n
 389         ---help---
 390           Say Y here to experiment with turning CPUs off and on.  CPUs
 391           can be controlled through /sys/devices/system/cpu/cpu#.
 392           Say N if you want to disable CPU hotplug.
 393
 394 config ARCH_ENABLE_MEMORY_HOTPLUG
 395         def_bool y
 396
 397 config ARCH_ENABLE_MEMORY_HOTREMOVE
 398         def_bool y
 399
 400 config SCHED_SMT
 401         bool "SMT scheduler support"
 402         depends on SMP
 403         help
 404           Improves the CPU scheduler's decision making when dealing with
 405           Intel IA64 chips with MultiThreading at a cost of slightly increased
 406           overhead in some places. If unsure say N here.
 407
 408 config PERMIT_BSP_REMOVE
 409         bool "Support removal of Bootstrap Processor"
 410         depends on HOTPLUG_CPU
 411         default n
 412         ---help---
 413         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 414         support.
 415
 416 config FORCE_CPEI_RETARGET
 417         bool "Force assumption that CPEI can be re-targetted"
 418         depends on PERMIT_BSP_REMOVE
 419         default n
 420         ---help---
 421         Say Y if you need to force the assumption that CPEI can be re-targetted to
 422         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 423         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 424         This option it useful to enable this feature on older BIOS's as well.
 425         You can also enable this by using boot command line option force_cpei=1.
 426
 427 source "kernel/Kconfig.preempt"
 428
 429 source "mm/Kconfig"
 430
 431 config ARCH_SELECT_MEMORY_MODEL
 432         def_bool y
 433
 434 config ARCH_DISCONTIGMEM_ENABLE
 435         def_bool y
 436         help
 437           Say Y to support efficient handling of discontiguous physical memory,
 438           for architectures which are either NUMA (Non-Uniform Memory Access)
 439           or have huge holes in the physical address space for other reasons.
 440           See <file:Documentation/vm/numa> for more.
 441
 442 config ARCH_FLATMEM_ENABLE
 443         def_bool y
 444
 445 config ARCH_SPARSEMEM_ENABLE
 446         def_bool y
 447         depends on ARCH_DISCONTIGMEM_ENABLE
 448         select SPARSEMEM_VMEMMAP_ENABLE
 449
 450 config ARCH_DISCONTIGMEM_DEFAULT
 451         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 452         depends on ARCH_DISCONTIGMEM_ENABLE
 453
 454 config NUMA
 455         bool "NUMA support"
 456         depends on !IA64_HP_SIM && !FLATMEM
 457         default y if IA64_SGI_SN2
 458         select ACPI_NUMA if ACPI
 459         help
 460           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 461           Access).  This option is for configuring high-end multiprocessor
 462           server systems.  If in doubt, say N.
 463
 464 config NODES_SHIFT
 465         int "Max num nodes shift(3-10)"
 466         range 3 10
 467         default "10"
 468         depends on NEED_MULTIPLE_NODES
 469         help
 470           This option specifies the maximum number of nodes in your SSI system.
 471           MAX_NUMNODES will be 2^(This value).
 472           If in doubt, use the default.
 473
 474 config ARCH_POPULATES_NODE_MAP
 475         def_bool y
 476
 477 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 478 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 479 config VIRTUAL_MEM_MAP
 480         bool "Virtual mem map"
 481         depends on !SPARSEMEM
 482         default y if !IA64_HP_SIM
 483         help
 484           Say Y to compile the kernel with support for a virtual mem map.
 485           This code also only takes effect if a memory hole of greater than
 486           1 Gb is found during boot.  You must turn this option on if you
 487           require the DISCONTIGMEM option for your machine. If you are
 488           unsure, say Y.
 489
 490 config HOLES_IN_ZONE
 491         bool
 492         default y if VIRTUAL_MEM_MAP
 493
 494 config HAVE_ARCH_EARLY_PFN_TO_NID
 495         def_bool NUMA && SPARSEMEM
 496
 497 config HAVE_ARCH_NODEDATA_EXTENSION
 498         def_bool y
 499         depends on NUMA
 500
 501 config ARCH_PROC_KCORE_TEXT
 502         def_bool y
 503         depends on PROC_KCORE
 504
 505 config IA32_SUPPORT
 506         bool "Support for Linux/x86 binaries"
 507         help
 508           IA-64 processors can execute IA-32 (X86) instructions.  By
 509           saying Y here, the kernel will include IA-32 system call
 510           emulation support which makes it possible to transparently
 511           run IA-32 Linux binaries on an IA-64 Linux system.
 512           If in doubt, say Y.
 513
 514 config COMPAT
 515         bool
 516         depends on IA32_SUPPORT
 517         default y
 518
 519 config COMPAT_FOR_U64_ALIGNMENT
 520         def_bool COMPAT
 521
 522 config IA64_MCA_RECOVERY
 523         tristate "MCA recovery from errors other than TLB."
 524
 525 config PERFMON
 526         bool "Performance monitor support"
 527         help
 528           Selects whether support for the IA-64 performance monitor hardware
 529           is included in the kernel.  This makes some kernel data-structures a
 530           little bigger and slows down execution a bit, but it is generally
 531           a good idea to turn this on.  If you're unsure, say Y.
 532
 533 config IA64_PALINFO
 534         tristate "/proc/pal support"
 535         help
 536           If you say Y here, you are able to get PAL (Processor Abstraction
 537           Layer) information in /proc/pal.  This contains useful information
 538           about the processors in your systems, such as cache and TLB sizes
 539           and the PAL firmware version in use.
 540
 541           To use this option, you have to ensure that the "/proc file system
 542           support" (CONFIG_PROC_FS) is enabled, too.
 543
 544 config IA64_MC_ERR_INJECT
 545         tristate "MC error injection support"
 546         help
 547           Adds support for MC error injection. If enabled, the kernel
 548           will provide a sysfs interface for user applications to
 549           call MC error injection PAL procedures to inject various errors.
 550           This is a useful tool for MCA testing.
 551
 552           If you're unsure, do not select this option.
 553
 554 config SGI_SN
 555         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 556
 557 config IA64_ESI
 558         bool "ESI (Extensible SAL Interface) support"
 559         help
 560           If you say Y here, support is built into the kernel to
 561           make ESI calls.  ESI calls are used to support vendor-specific
 562           firmware extensions, such as the ability to inject memory-errors
 563           for test-purposes.  If you're unsure, say N.
 564
 565 config IA64_HP_AML_NFW
 566         bool "Support ACPI AML calls to native firmware"
 567         help
 568           This driver installs a global ACPI Operation Region handler for
 569           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 570           native firmware functions.  The driver installs the OpRegion
 571           handler if there is an HPQ5001 device or if the user supplies
 572           the "force" module parameter, e.g., with the "aml_nfw.force"
 573           kernel command line option.
 574
 575 source "drivers/sn/Kconfig"
 576
 577 config KEXEC
 578         bool "kexec system call (EXPERIMENTAL)"
 579         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 580         help
 581           kexec is a system call that implements the ability to shutdown your
 582           current kernel, and to start another kernel.  It is like a reboot
 583           but it is independent of the system firmware.   And like a reboot
 584           you can start any kernel with it, not just Linux.
 585
 586           The name comes from the similarity to the exec system call.
 587
 588           It is an ongoing process to be certain the hardware in a machine
 589           is properly shutdown, so do not be surprised if this code does not
 590           initially work for you.  It may help to enable device hotplugging
 591           support.  As of this writing the exact hardware interface is
 592           strongly in flux, so no good recommendation can be made.
 593
 594 config CRASH_DUMP
 595           bool "kernel crash dumps"
 596           depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 597           help
 598             Generate crash dump after being started by kexec.
 599
 600 source "drivers/firmware/Kconfig"
 601
 602 source "fs/Kconfig.binfmt"
 603
 604 endmenu
 605
 606 menu "Power management and ACPI options"
 607
 608 source "kernel/power/Kconfig"
 609
 610 source "drivers/acpi/Kconfig"
 611
 612 if PM
 613
 614 source "arch/ia64/kernel/cpufreq/Kconfig"
 615
 616 endif
 617
 618 endmenu
 619
 620 if !IA64_HP_SIM
 621
 622 menu "Bus options (PCI, PCMCIA)"
 623
 624 config PCI
 625         bool "PCI support"
 626         help
 627           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 628           here unless you are using a simulator without PCI support.
 629
 630 config PCI_DOMAINS
 631         def_bool PCI
 632
 633 config PCI_SYSCALL
 634         def_bool PCI
 635
 636 source "drivers/pci/pcie/Kconfig"
 637
 638 source "drivers/pci/Kconfig"
 639
 640 source "drivers/pci/hotplug/Kconfig"
 641
 642 source "drivers/pcmcia/Kconfig"
 643
 644 config DMAR
 645         bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
 646         depends on IA64_GENERIC && ACPI && EXPERIMENTAL
 647         help
 648           DMA remapping (DMAR) devices support enables independent address
 649           translations for Direct Memory Access (DMA) from devices.
 650           These DMA remapping devices are reported via ACPI tables
 651           and include PCI device scope covered by these DMA
 652           remapping devices.
 653
 654 config DMAR_DEFAULT_ON
 655         def_bool y
 656         prompt "Enable DMA Remapping Devices by default"
 657         depends on DMAR
 658         help
 659           Selecting this option will enable a DMAR device at boot time if
 660           one is found. If this option is not selected, DMAR support can
 661           be enabled by passing intel_iommu=on to the kernel. It is
 662           recommended you say N here while the DMAR code remains
 663           experimental.
 664
 665 endmenu
 666
 667 endif
 668
 669 source "net/Kconfig"
 670
 671 source "drivers/Kconfig"
 672
 673 source "arch/ia64/hp/sim/Kconfig"
 674
 675 config MSPEC
 676         tristate "Memory special operations driver"
 677         depends on IA64
 678         select IA64_UNCACHED_ALLOCATOR
 679         help
 680           If you have an ia64 and you want to enable memory special
 681           operations support (formerly known as fetchop), say Y here,
 682           otherwise say N.
 683
 684 source "fs/Kconfig"
 685
 686 source "arch/ia64/Kconfig.debug"
 687
 688 source "security/Kconfig"
 689
 690 source "crypto/Kconfig"
 691
 692 source "arch/ia64/kvm/Kconfig"
 693
 694 source "lib/Kconfig"
 695
 696 #
 697 # Use the generic interrupt handling code in kernel/irq/:
 698 #
 699 config GENERIC_HARDIRQS
 700         bool
 701         default y
 702
 703 config GENERIC_IRQ_PROBE
 704         bool
 705         default y
 706
 707 config GENERIC_PENDING_IRQ
 708         bool
 709         depends on GENERIC_HARDIRQS && SMP
 710         default y
 711
 712 config IRQ_PER_CPU
 713         bool
 714         default y
 715
 716 config IOMMU_HELPER
 717         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
 718
 719 config IOMMU_API
 720         def_bool (DMAR)