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