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