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