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 ARCH_DMA_ADDR_T_64BIT
  57         def_bool y
  58
  59 config NEED_DMA_MAP_STATE
  60         def_bool y
  61
  62 config NEED_SG_DMA_LENGTH
  63         def_bool y
  64
  65 config SWIOTLB
  66        bool
  67
  68 config STACKTRACE_SUPPORT
  69         def_bool y
  70
  71 config GENERIC_LOCKBREAK
  72         def_bool n
  73
  74 config RWSEM_XCHGADD_ALGORITHM
  75         bool
  76         default y
  77
  78 config HUGETLB_PAGE_SIZE_VARIABLE
  79         bool
  80         depends on HUGETLB_PAGE
  81         default y
  82
  83 config GENERIC_FIND_NEXT_BIT
  84         bool
  85         default y
  86
  87 config GENERIC_CALIBRATE_DELAY
  88         bool
  89         default y
  90
  91 config GENERIC_TIME_VSYSCALL
  92         bool
  93         default y
  94
  95 config HAVE_SETUP_PER_CPU_AREA
  96         def_bool y
  97
  98 config DMI
  99         bool
 100         default y
 101
 102 config EFI
 103         bool
 104         default y
 105
 106 config GENERIC_IOMAP
 107         bool
 108         default y
 109
 110 config SCHED_OMIT_FRAME_POINTER
 111         bool
 112         default y
 113
 114 config IA64_UNCACHED_ALLOCATOR
 115         bool
 116         select GENERIC_ALLOCATOR
 117
 118 config ARCH_USES_PG_UNCACHED
 119         def_bool y
 120         depends on IA64_UNCACHED_ALLOCATOR
 121
 122 config AUDIT_ARCH
 123         bool
 124         default y
 125
 126 menuconfig PARAVIRT_GUEST
 127         bool "Paravirtualized guest support"
 128         help
 129           Say Y here to get to see options related to running Linux under
 130           various hypervisors.  This option alone does not add any kernel code.
 131
 132           If you say N, all options in this submenu will be skipped and disabled.
 133
 134 if PARAVIRT_GUEST
 135
 136 config PARAVIRT
 137         bool "Enable paravirtualization code"
 138         depends on PARAVIRT_GUEST
 139         default y
 140         bool
 141         default y
 142         help
 143           This changes the kernel so it can modify itself when it is run
 144           under a hypervisor, potentially improving performance significantly
 145           over full virtualization.  However, when run without a hypervisor
 146           the kernel is theoretically slower and slightly larger.
 147
 148
 149 source "arch/ia64/xen/Kconfig"
 150
 151 endif
 152
 153 choice
 154         prompt "System type"
 155         default IA64_GENERIC
 156
 157 config IA64_GENERIC
 158         bool "generic"
 159         select NUMA
 160         select ACPI_NUMA
 161         select SWIOTLB
 162         select PCI_MSI
 163         select DMAR
 164         help
 165           This selects the system type of your hardware.  A "generic" kernel
 166           will run on any supported IA-64 system.  However, if you configure
 167           a kernel for your specific system, it will be faster and smaller.
 168
 169           generic               For any supported IA-64 system
 170           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 171           DIG+Intel+IOMMU       For DIG systems with Intel IOMMU
 172           HP-zx1/sx1000         For HP systems
 173           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 174           SGI-SN2               For SGI Altix systems
 175           SGI-UV                For SGI UV systems
 176           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 177           Xen-domU              For xen domU system
 178
 179           If you don't know what to do, choose "generic".
 180
 181 config IA64_DIG
 182         bool "DIG-compliant"
 183         select SWIOTLB
 184
 185 config IA64_DIG_VTD
 186         bool "DIG+Intel+IOMMU"
 187         select DMAR
 188         select PCI_MSI
 189
 190 config IA64_HP_ZX1
 191         bool "HP-zx1/sx1000"
 192         help
 193           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 194           support for the HP I/O MMU.
 195
 196 config IA64_HP_ZX1_SWIOTLB
 197         bool "HP-zx1/sx1000 with software I/O TLB"
 198         select SWIOTLB
 199         help
 200           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 201           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 202           from support for the HP I/O MMU, this includes support for the software
 203           I/O TLB, which allows supporting the broken devices at the expense of
 204           wasting some kernel memory (about 2MB by default).
 205
 206 config IA64_SGI_SN2
 207         bool "SGI-SN2"
 208         select NUMA
 209         select ACPI_NUMA
 210         help
 211           Selecting this option will optimize the kernel for use on sn2 based
 212           systems, but the resulting kernel binary will not run on other
 213           types of ia64 systems.  If you have an SGI Altix system, it's safe
 214           to select this option.  If in doubt, select ia64 generic support
 215           instead.
 216
 217 config IA64_SGI_UV
 218         bool "SGI-UV"
 219         select NUMA
 220         select ACPI_NUMA
 221         select SWIOTLB
 222         help
 223           Selecting this option will optimize the kernel for use on UV based
 224           systems, but the resulting kernel binary will not run on other
 225           types of ia64 systems.  If you have an SGI UV system, it's safe
 226           to select this option.  If in doubt, select ia64 generic support
 227           instead.
 228
 229 config IA64_HP_SIM
 230         bool "Ski-simulator"
 231         select SWIOTLB
 232
 233 config IA64_XEN_GUEST
 234         bool "Xen guest"
 235         select SWIOTLB
 236         depends on XEN
 237         help
 238           Build a kernel that runs on Xen guest domain. At this moment only
 239           16KB page size in supported.
 240
 241 endchoice
 242
 243 choice
 244         prompt "Processor type"
 245         default ITANIUM
 246
 247 config ITANIUM
 248         bool "Itanium"
 249         help
 250           Select your IA-64 processor type.  The default is Itanium.
 251           This choice is safe for all IA-64 systems, but may not perform
 252           optimally on systems with, say, Itanium 2 or newer processors.
 253
 254 config MCKINLEY
 255         bool "Itanium 2"
 256         help
 257           Select this to configure for an Itanium 2 (McKinley) processor.
 258
 259 endchoice
 260
 261 choice
 262         prompt "Kernel page size"
 263         default IA64_PAGE_SIZE_16KB
 264
 265 config IA64_PAGE_SIZE_4KB
 266         bool "4KB"
 267         help
 268           This lets you select the page size of the kernel.  For best IA-64
 269           performance, a page size of 8KB or 16KB is recommended.  For best
 270           IA-32 compatibility, a page size of 4KB should be selected (the vast
 271           majority of IA-32 binaries work perfectly fine with a larger page
 272           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 273           be selected.
 274
 275           4KB                For best IA-32 compatibility
 276           8KB                For best IA-64 performance
 277           16KB               For best IA-64 performance
 278           64KB               Requires Itanium 2 or newer processor.
 279
 280           If you don't know what to do, choose 16KB.
 281
 282 config IA64_PAGE_SIZE_8KB
 283         bool "8KB"
 284
 285 config IA64_PAGE_SIZE_16KB
 286         bool "16KB"
 287
 288 config IA64_PAGE_SIZE_64KB
 289         depends on !ITANIUM
 290         bool "64KB"
 291
 292 endchoice
 293
 294 choice
 295         prompt "Page Table Levels"
 296         default PGTABLE_3
 297
 298 config PGTABLE_3
 299         bool "3 Levels"
 300
 301 config PGTABLE_4
 302         depends on !IA64_PAGE_SIZE_64KB
 303         bool "4 Levels"
 304
 305 endchoice
 306
 307 if IA64_HP_SIM
 308 config HZ
 309         default 32
 310 endif
 311
 312 if !IA64_HP_SIM
 313 source kernel/Kconfig.hz
 314 endif
 315
 316 config IA64_BRL_EMU
 317         bool
 318         depends on ITANIUM
 319         default y
 320
 321 # align cache-sensitive data to 128 bytes
 322 config IA64_L1_CACHE_SHIFT
 323         int
 324         default "7" if MCKINLEY
 325         default "6" if ITANIUM
 326
 327 config IA64_CYCLONE
 328         bool "Cyclone (EXA) Time Source support"
 329         help
 330           Say Y here to enable support for IBM EXA Cyclone time source.
 331           If you're unsure, answer N.
 332
 333 config IOSAPIC
 334         bool
 335         depends on !IA64_HP_SIM
 336         default y
 337
 338 config FORCE_MAX_ZONEORDER
 339         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 340         range 11 17  if !HUGETLB_PAGE
 341         default "17" if HUGETLB_PAGE
 342         default "11"
 343
 344 config VIRT_CPU_ACCOUNTING
 345         bool "Deterministic task and CPU time accounting"
 346         default n
 347         help
 348           Select this option to enable more accurate task and CPU time
 349           accounting.  This is done by reading a CPU counter on each
 350           kernel entry and exit and on transitions within the kernel
 351           between system, softirq and hardirq state, so there is a
 352           small performance impact.
 353           If in doubt, say N here.
 354
 355 config SMP
 356         bool "Symmetric multi-processing support"
 357         select USE_GENERIC_SMP_HELPERS
 358         help
 359           This enables support for systems with more than one CPU. If you have
 360           a system with only one CPU, say N.  If you have a system with more
 361           than one CPU, say Y.
 362
 363           If you say N here, the kernel will run on single and multiprocessor
 364           systems, but will use only one CPU of a multiprocessor system.  If
 365           you say Y here, the kernel will run on many, but not all,
 366           single processor systems.  On a single processor system, the kernel
 367           will run faster if you say N here.
 368
 369           See also the SMP-HOWTO available at
 370           <http://www.tldp.org/docs.html#howto>.
 371
 372           If you don't know what to do here, say N.
 373
 374 config NR_CPUS
 375         int "Maximum number of CPUs (2-4096)"
 376         range 2 4096
 377         depends on SMP
 378         default "4096"
 379         help
 380           You should set this to the number of CPUs in your system, but
 381           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 382           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 383           than 64 will cause the use of a CPU mask array, causing a small
 384           performance hit.
 385
 386 config HOTPLUG_CPU
 387         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 388         depends on SMP && EXPERIMENTAL
 389         select HOTPLUG
 390         default n
 391         ---help---
 392           Say Y here to experiment with turning CPUs off and on.  CPUs
 393           can be controlled through /sys/devices/system/cpu/cpu#.
 394           Say N if you want to disable CPU hotplug.
 395
 396 config ARCH_ENABLE_MEMORY_HOTPLUG
 397         def_bool y
 398
 399 config ARCH_ENABLE_MEMORY_HOTREMOVE
 400         def_bool y
 401
 402 config SCHED_SMT
 403         bool "SMT scheduler support"
 404         depends on SMP
 405         help
 406           Improves the CPU scheduler's decision making when dealing with
 407           Intel IA64 chips with MultiThreading at a cost of slightly increased
 408           overhead in some places. If unsure say N here.
 409
 410 config PERMIT_BSP_REMOVE
 411         bool "Support removal of Bootstrap Processor"
 412         depends on HOTPLUG_CPU
 413         default n
 414         ---help---
 415         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 416         support.
 417
 418 config FORCE_CPEI_RETARGET
 419         bool "Force assumption that CPEI can be re-targetted"
 420         depends on PERMIT_BSP_REMOVE
 421         default n
 422         ---help---
 423         Say Y if you need to force the assumption that CPEI can be re-targetted to
 424         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 425         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 426         This option it useful to enable this feature on older BIOS's as well.
 427         You can also enable this by using boot command line option force_cpei=1.
 428
 429 source "kernel/Kconfig.preempt"
 430
 431 source "mm/Kconfig"
 432
 433 config ARCH_SELECT_MEMORY_MODEL
 434         def_bool y
 435
 436 config ARCH_DISCONTIGMEM_ENABLE
 437         def_bool y
 438         help
 439           Say Y to support efficient handling of discontiguous physical memory,
 440           for architectures which are either NUMA (Non-Uniform Memory Access)
 441           or have huge holes in the physical address space for other reasons.
 442           See <file:Documentation/vm/numa> for more.
 443
 444 config ARCH_FLATMEM_ENABLE
 445         def_bool y
 446
 447 config ARCH_SPARSEMEM_ENABLE
 448         def_bool y
 449         depends on ARCH_DISCONTIGMEM_ENABLE
 450         select SPARSEMEM_VMEMMAP_ENABLE
 451
 452 config ARCH_DISCONTIGMEM_DEFAULT
 453         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 454         depends on ARCH_DISCONTIGMEM_ENABLE
 455
 456 config NUMA
 457         bool "NUMA support"
 458         depends on !IA64_HP_SIM && !FLATMEM
 459         default y if IA64_SGI_SN2
 460         select ACPI_NUMA if ACPI
 461         help
 462           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 463           Access).  This option is for configuring high-end multiprocessor
 464           server systems.  If in doubt, say N.
 465
 466 config NODES_SHIFT
 467         int "Max num nodes shift(3-10)"
 468         range 3 10
 469         default "10"
 470         depends on NEED_MULTIPLE_NODES
 471         help
 472           This option specifies the maximum number of nodes in your SSI system.
 473           MAX_NUMNODES will be 2^(This value).
 474           If in doubt, use the default.
 475
 476 config ARCH_POPULATES_NODE_MAP
 477         def_bool y
 478
 479 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 480 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 481 config VIRTUAL_MEM_MAP
 482         bool "Virtual mem map"
 483         depends on !SPARSEMEM
 484         default y if !IA64_HP_SIM
 485         help
 486           Say Y to compile the kernel with support for a virtual mem map.
 487           This code also only takes effect if a memory hole of greater than
 488           1 Gb is found during boot.  You must turn this option on if you
 489           require the DISCONTIGMEM option for your machine. If you are
 490           unsure, say Y.
 491
 492 config HOLES_IN_ZONE
 493         bool
 494         default y if VIRTUAL_MEM_MAP
 495
 496 config HAVE_ARCH_EARLY_PFN_TO_NID
 497         def_bool NUMA && SPARSEMEM
 498
 499 config HAVE_ARCH_NODEDATA_EXTENSION
 500         def_bool y
 501         depends on NUMA
 502
 503 config USE_PERCPU_NUMA_NODE_ID
 504         def_bool y
 505         depends on NUMA
 506
 507 config HAVE_MEMORYLESS_NODES
 508         def_bool NUMA
 509
 510 config ARCH_PROC_KCORE_TEXT
 511         def_bool y
 512         depends on PROC_KCORE
 513
 514 config IA64_MCA_RECOVERY
 515         tristate "MCA recovery from errors other than TLB."
 516
 517 config PERFMON
 518         bool "Performance monitor support"
 519         help
 520           Selects whether support for the IA-64 performance monitor hardware
 521           is included in the kernel.  This makes some kernel data-structures a
 522           little bigger and slows down execution a bit, but it is generally
 523           a good idea to turn this on.  If you're unsure, say Y.
 524
 525 config IA64_PALINFO
 526         tristate "/proc/pal support"
 527         help
 528           If you say Y here, you are able to get PAL (Processor Abstraction
 529           Layer) information in /proc/pal.  This contains useful information
 530           about the processors in your systems, such as cache and TLB sizes
 531           and the PAL firmware version in use.
 532
 533           To use this option, you have to ensure that the "/proc file system
 534           support" (CONFIG_PROC_FS) is enabled, too.
 535
 536 config IA64_MC_ERR_INJECT
 537         tristate "MC error injection support"
 538         help
 539           Adds support for MC error injection. If enabled, the kernel
 540           will provide a sysfs interface for user applications to
 541           call MC error injection PAL procedures to inject various errors.
 542           This is a useful tool for MCA testing.
 543
 544           If you're unsure, do not select this option.
 545
 546 config SGI_SN
 547         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 548
 549 config IA64_ESI
 550         bool "ESI (Extensible SAL Interface) support"
 551         help
 552           If you say Y here, support is built into the kernel to
 553           make ESI calls.  ESI calls are used to support vendor-specific
 554           firmware extensions, such as the ability to inject memory-errors
 555           for test-purposes.  If you're unsure, say N.
 556
 557 config IA64_HP_AML_NFW
 558         bool "Support ACPI AML calls to native firmware"
 559         help
 560           This driver installs a global ACPI Operation Region handler for
 561           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 562           native firmware functions.  The driver installs the OpRegion
 563           handler if there is an HPQ5001 device or if the user supplies
 564           the "force" module parameter, e.g., with the "aml_nfw.force"
 565           kernel command line option.
 566
 567 source "drivers/sn/Kconfig"
 568
 569 config KEXEC
 570         bool "kexec system call (EXPERIMENTAL)"
 571         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 572         help
 573           kexec is a system call that implements the ability to shutdown your
 574           current kernel, and to start another kernel.  It is like a reboot
 575           but it is independent of the system firmware.   And like a reboot
 576           you can start any kernel with it, not just Linux.
 577
 578           The name comes from the similarity to the exec system call.
 579
 580           It is an ongoing process to be certain the hardware in a machine
 581           is properly shutdown, so do not be surprised if this code does not
 582           initially work for you.  It may help to enable device hotplugging
 583           support.  As of this writing the exact hardware interface is
 584           strongly in flux, so no good recommendation can be made.
 585
 586 config CRASH_DUMP
 587           bool "kernel crash dumps"
 588           depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 589           help
 590             Generate crash dump after being started by kexec.
 591
 592 source "drivers/firmware/Kconfig"
 593
 594 source "fs/Kconfig.binfmt"
 595
 596 endmenu
 597
 598 menu "Power management and ACPI options"
 599
 600 source "kernel/power/Kconfig"
 601
 602 source "drivers/acpi/Kconfig"
 603
 604 if PM
 605
 606 source "arch/ia64/kernel/cpufreq/Kconfig"
 607
 608 endif
 609
 610 endmenu
 611
 612 if !IA64_HP_SIM
 613
 614 menu "Bus options (PCI, PCMCIA)"
 615
 616 config PCI
 617         bool "PCI support"
 618         help
 619           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 620           here unless you are using a simulator without PCI support.
 621
 622 config PCI_DOMAINS
 623         def_bool PCI
 624
 625 config PCI_SYSCALL
 626         def_bool PCI
 627
 628 source "drivers/pci/pcie/Kconfig"
 629
 630 source "drivers/pci/Kconfig"
 631
 632 source "drivers/pci/hotplug/Kconfig"
 633
 634 source "drivers/pcmcia/Kconfig"
 635
 636 config DMAR
 637         bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
 638         depends on IA64_GENERIC && ACPI && EXPERIMENTAL
 639         help
 640           DMA remapping (DMAR) devices support enables independent address
 641           translations for Direct Memory Access (DMA) from devices.
 642           These DMA remapping devices are reported via ACPI tables
 643           and include PCI device scope covered by these DMA
 644           remapping devices.
 645
 646 config DMAR_DEFAULT_ON
 647         def_bool y
 648         prompt "Enable DMA Remapping Devices by default"
 649         depends on DMAR
 650         help
 651           Selecting this option will enable a DMAR device at boot time if
 652           one is found. If this option is not selected, DMAR support can
 653           be enabled by passing intel_iommu=on to the kernel. It is
 654           recommended you say N here while the DMAR code remains
 655           experimental.
 656
 657 endmenu
 658
 659 endif
 660
 661 source "net/Kconfig"
 662
 663 source "drivers/Kconfig"
 664
 665 source "arch/ia64/hp/sim/Kconfig"
 666
 667 config MSPEC
 668         tristate "Memory special operations driver"
 669         depends on IA64
 670         select IA64_UNCACHED_ALLOCATOR
 671         help
 672           If you have an ia64 and you want to enable memory special
 673           operations support (formerly known as fetchop), say Y here,
 674           otherwise say N.
 675
 676 source "fs/Kconfig"
 677
 678 source "arch/ia64/Kconfig.debug"
 679
 680 source "security/Kconfig"
 681
 682 source "crypto/Kconfig"
 683
 684 source "arch/ia64/kvm/Kconfig"
 685
 686 source "lib/Kconfig"
 687
 688 #
 689 # Use the generic interrupt handling code in kernel/irq/:
 690 #
 691 config GENERIC_HARDIRQS
 692         def_bool y
 693
 694 config GENERIC_HARDIRQS_NO__DO_IRQ
 695         def_bool y
 696
 697 config GENERIC_IRQ_PROBE
 698         bool
 699         default y
 700
 701 config GENERIC_PENDING_IRQ
 702         bool
 703         depends on GENERIC_HARDIRQS && SMP
 704         default y
 705
 706 config IRQ_PER_CPU
 707         bool
 708         default y
 709
 710 config IOMMU_HELPER
 711         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
 712
 713 config IOMMU_API
 714         def_bool (DMAR)