arch/ia64/Kconfig

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