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