arch/ia64/Kconfig

   1 source "init/Kconfig"
   2
   3 source "kernel/Kconfig.freezer"
   4
   5 menu "Processor type and features"
   6
   7 config IA64
   8         bool
   9         select PCI if (!IA64_HP_SIM)
  10         select ACPI if (!IA64_HP_SIM)
  11         select PM if (!IA64_HP_SIM)
  12         select ARCH_SUPPORTS_MSI
  13         select HAVE_UNSTABLE_SCHED_CLOCK
  14         select HAVE_IDE
  15         select HAVE_OPROFILE
  16         select HAVE_KPROBES
  17         select HAVE_KRETPROBES
  18         select HAVE_FTRACE_MCOUNT_RECORD
  19         select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
  20         select HAVE_FUNCTION_TRACER
  21         select HAVE_DMA_ATTRS
  22         select HAVE_KVM
  23         select HAVE_ARCH_TRACEHOOK
  24         select HAVE_DMA_API_DEBUG
  25         default y
  26         help
  27           The Itanium Processor Family is Intel's 64-bit successor to
  28           the 32-bit X86 line.  The IA-64 Linux project has a home
  29           page at <http://www.linuxia64.org/> and a mailing list at
  30           <linux-ia64@vger.kernel.org>.
  31
  32 config 64BIT
  33         bool
  34         select ATA_NONSTANDARD if ATA
  35         default y
  36
  37 config ZONE_DMA
  38         def_bool y
  39         depends on !IA64_SGI_SN2
  40
  41 config QUICKLIST
  42         bool
  43         default y
  44
  45 config MMU
  46         bool
  47         default y
  48
  49 config NEED_DMA_MAP_STATE
  50         def_bool y
  51
  52 config NEED_SG_DMA_LENGTH
  53         def_bool y
  54
  55 config SWIOTLB
  56        bool
  57
  58 config GENERIC_LOCKBREAK
  59         def_bool n
  60
  61 config RWSEM_XCHGADD_ALGORITHM
  62         bool
  63         default y
  64
  65 config HUGETLB_PAGE_SIZE_VARIABLE
  66         bool
  67         depends on HUGETLB_PAGE
  68         default y
  69
  70 config GENERIC_FIND_NEXT_BIT
  71         bool
  72         default y
  73
  74 config GENERIC_CALIBRATE_DELAY
  75         bool
  76         default y
  77
  78 config GENERIC_TIME
  79         bool
  80         default y
  81
  82 config GENERIC_TIME_VSYSCALL
  83         bool
  84         default y
  85
  86 config HAVE_SETUP_PER_CPU_AREA
  87         def_bool y
  88
  89 config DMI
  90         bool
  91         default y
  92
  93 config EFI
  94         bool
  95         default y
  96
  97 config GENERIC_IOMAP
  98         bool
  99         default y
 100
 101 config SCHED_OMIT_FRAME_POINTER
 102         bool
 103         default y
 104
 105 config IA64_UNCACHED_ALLOCATOR
 106         bool
 107         select GENERIC_ALLOCATOR
 108
 109 config ARCH_USES_PG_UNCACHED
 110         def_bool y
 111         depends on IA64_UNCACHED_ALLOCATOR
 112
 113 config AUDIT_ARCH
 114         bool
 115         default y
 116
 117 menuconfig PARAVIRT_GUEST
 118         bool "Paravirtualized guest support"
 119         help
 120           Say Y here to get to see options related to running Linux under
 121           various hypervisors.  This option alone does not add any kernel code.
 122
 123           If you say N, all options in this submenu will be skipped and disabled.
 124
 125 if PARAVIRT_GUEST
 126
 127 config PARAVIRT
 128         bool "Enable paravirtualization code"
 129         depends on PARAVIRT_GUEST
 130         default y
 131         bool
 132         default y
 133         help
 134           This changes the kernel so it can modify itself when it is run
 135           under a hypervisor, potentially improving performance significantly
 136           over full virtualization.  However, when run without a hypervisor
 137           the kernel is theoretically slower and slightly larger.
 138
 139
 140 source "arch/ia64/xen/Kconfig"
 141
 142 endif
 143
 144 choice
 145         prompt "System type"
 146         default IA64_GENERIC
 147
 148 config IA64_GENERIC
 149         bool "generic"
 150         select NUMA
 151         select ACPI_NUMA
 152         select SWIOTLB
 153         select PCI_MSI
 154         select DMAR
 155         help
 156           This selects the system type of your hardware.  A "generic" kernel
 157           will run on any supported IA-64 system.  However, if you configure
 158           a kernel for your specific system, it will be faster and smaller.
 159
 160           generic               For any supported IA-64 system
 161           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 162           DIG+Intel+IOMMU       For DIG systems with Intel IOMMU
 163           HP-zx1/sx1000         For HP systems
 164           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 165           SGI-SN2               For SGI Altix systems
 166           SGI-UV                For SGI UV systems
 167           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 168           Xen-domU              For xen domU system
 169
 170           If you don't know what to do, choose "generic".
 171
 172 config IA64_DIG
 173         bool "DIG-compliant"
 174         select SWIOTLB
 175
 176 config IA64_DIG_VTD
 177         bool "DIG+Intel+IOMMU"
 178         select DMAR
 179         select PCI_MSI
 180
 181 config IA64_HP_ZX1
 182         bool "HP-zx1/sx1000"
 183         help
 184           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 185           support for the HP I/O MMU.
 186
 187 config IA64_HP_ZX1_SWIOTLB
 188         bool "HP-zx1/sx1000 with software I/O TLB"
 189         select SWIOTLB
 190         help
 191           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 192           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 193           from support for the HP I/O MMU, this includes support for the software
 194           I/O TLB, which allows supporting the broken devices at the expense of
 195           wasting some kernel memory (about 2MB by default).
 196
 197 config IA64_SGI_SN2
 198         bool "SGI-SN2"
 199         select NUMA
 200         select ACPI_NUMA
 201         help
 202           Selecting this option will optimize the kernel for use on sn2 based
 203           systems, but the resulting kernel binary will not run on other
 204           types of ia64 systems.  If you have an SGI Altix system, it's safe
 205           to select this option.  If in doubt, select ia64 generic support
 206           instead.
 207
 208 config IA64_SGI_UV
 209         bool "SGI-UV"
 210         select NUMA
 211         select ACPI_NUMA
 212         select SWIOTLB
 213         help
 214           Selecting this option will optimize the kernel for use on UV based
 215           systems, but the resulting kernel binary will not run on other
 216           types of ia64 systems.  If you have an SGI UV system, it's safe
 217           to select this option.  If in doubt, select ia64 generic support
 218           instead.
 219
 220 config IA64_HP_SIM
 221         bool "Ski-simulator"
 222         select SWIOTLB
 223
 224 config IA64_XEN_GUEST
 225         bool "Xen guest"
 226         select SWIOTLB
 227         depends on XEN
 228         help
 229           Build a kernel that runs on Xen guest domain. At this moment only
 230           16KB page size in supported.
 231
 232 endchoice
 233
 234 choice
 235         prompt "Processor type"
 236         default ITANIUM
 237
 238 config ITANIUM
 239         bool "Itanium"
 240         help
 241           Select your IA-64 processor type.  The default is Itanium.
 242           This choice is safe for all IA-64 systems, but may not perform
 243           optimally on systems with, say, Itanium 2 or newer processors.
 244
 245 config MCKINLEY
 246         bool "Itanium 2"
 247         help
 248           Select this to configure for an Itanium 2 (McKinley) processor.
 249
 250 endchoice
 251
 252 choice
 253         prompt "Kernel page size"
 254         default IA64_PAGE_SIZE_16KB
 255
 256 config IA64_PAGE_SIZE_4KB
 257         bool "4KB"
 258         help
 259           This lets you select the page size of the kernel.  For best IA-64
 260           performance, a page size of 8KB or 16KB is recommended.  For best
 261           IA-32 compatibility, a page size of 4KB should be selected (the vast
 262           majority of IA-32 binaries work perfectly fine with a larger page
 263           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 264           be selected.
 265
 266           4KB                For best IA-32 compatibility
 267           8KB                For best IA-64 performance
 268           16KB               For best IA-64 performance
 269           64KB               Requires Itanium 2 or newer processor.
 270
 271           If you don't know what to do, choose 16KB.
 272
 273 config IA64_PAGE_SIZE_8KB
 274         bool "8KB"
 275
 276 config IA64_PAGE_SIZE_16KB
 277         bool "16KB"
 278
 279 config IA64_PAGE_SIZE_64KB
 280         depends on !ITANIUM
 281         bool "64KB"
 282
 283 endchoice
 284
 285 choice
 286         prompt "Page Table Levels"
 287         default PGTABLE_3
 288
 289 config PGTABLE_3
 290         bool "3 Levels"
 291
 292 config PGTABLE_4
 293         depends on !IA64_PAGE_SIZE_64KB
 294         bool "4 Levels"
 295
 296 endchoice
 297
 298 if IA64_HP_SIM
 299 config HZ
 300         default 32
 301 endif
 302
 303 if !IA64_HP_SIM
 304 source kernel/Kconfig.hz
 305 endif
 306
 307 config IA64_BRL_EMU
 308         bool
 309         depends on ITANIUM
 310         default y
 311
 312 # align cache-sensitive data to 128 bytes
 313 config IA64_L1_CACHE_SHIFT
 314         int
 315         default "7" if MCKINLEY
 316         default "6" if ITANIUM
 317
 318 config IA64_CYCLONE
 319         bool "Cyclone (EXA) Time Source support"
 320         help
 321           Say Y here to enable support for IBM EXA Cyclone time source.
 322           If you're unsure, answer N.
 323
 324 config IOSAPIC
 325         bool
 326         depends on !IA64_HP_SIM
 327         default y
 328
 329 config FORCE_MAX_ZONEORDER
 330         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 331         range 11 17  if !HUGETLB_PAGE
 332         default "17" if HUGETLB_PAGE
 333         default "11"
 334
 335 config VIRT_CPU_ACCOUNTING
 336         bool "Deterministic task and CPU time accounting"
 337         default n
 338         help
 339           Select this option to enable more accurate task and CPU time
 340           accounting.  This is done by reading a CPU counter on each
 341           kernel entry and exit and on transitions within the kernel
 342           between system, softirq and hardirq state, so there is a
 343           small performance impact.
 344           If in doubt, say N here.
 345
 346 config SMP
 347         bool "Symmetric multi-processing support"
 348         select USE_GENERIC_SMP_HELPERS
 349         help
 350           This enables support for systems with more than one CPU. If you have
 351           a system with only one CPU, say N.  If you have a system with more
 352           than one CPU, say Y.
 353
 354           If you say N here, the kernel will run on single and multiprocessor
 355           systems, but will use only one CPU of a multiprocessor system.  If
 356           you say Y here, the kernel will run on many, but not all,
 357           single processor systems.  On a single processor system, the kernel
 358           will run faster if you say N here.
 359
 360           See also the SMP-HOWTO available at
 361           <http://www.tldp.org/docs.html#howto>.
 362
 363           If you don't know what to do here, say N.
 364
 365 config NR_CPUS
 366         int "Maximum number of CPUs (2-4096)"
 367         range 2 4096
 368         depends on SMP
 369         default "4096"
 370         help
 371           You should set this to the number of CPUs in your system, but
 372           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 373           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 374           than 64 will cause the use of a CPU mask array, causing a small
 375           performance hit.
 376
 377 config HOTPLUG_CPU
 378         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 379         depends on SMP && EXPERIMENTAL
 380         select HOTPLUG
 381         default n
 382         ---help---
 383           Say Y here to experiment with turning CPUs off and on.  CPUs
 384           can be controlled through /sys/devices/system/cpu/cpu#.
 385           Say N if you want to disable CPU hotplug.
 386
 387 config ARCH_ENABLE_MEMORY_HOTPLUG
 388         def_bool y
 389
 390 config ARCH_ENABLE_MEMORY_HOTREMOVE
 391         def_bool y
 392
 393 config SCHED_SMT
 394         bool "SMT scheduler support"
 395         depends on SMP
 396         help
 397           Improves the CPU scheduler's decision making when dealing with
 398           Intel IA64 chips with MultiThreading at a cost of slightly increased
 399           overhead in some places. If unsure say N here.
 400
 401 config PERMIT_BSP_REMOVE
 402         bool "Support removal of Bootstrap Processor"
 403         depends on HOTPLUG_CPU
 404         default n
 405         ---help---
 406         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 407         support.
 408
 409 config FORCE_CPEI_RETARGET
 410         bool "Force assumption that CPEI can be re-targetted"
 411         depends on PERMIT_BSP_REMOVE
 412         default n
 413         ---help---
 414         Say Y if you need to force the assumption that CPEI can be re-targetted to
 415         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 416         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 417         This option it useful to enable this feature on older BIOS's as well.
 418         You can also enable this by using boot command line option force_cpei=1.
 419
 420 source "kernel/Kconfig.preempt"
 421
 422 source "mm/Kconfig"
 423
 424 config ARCH_SELECT_MEMORY_MODEL
 425         def_bool y
 426
 427 config ARCH_DISCONTIGMEM_ENABLE
 428         def_bool y
 429         help
 430           Say Y to support efficient handling of discontiguous physical memory,
 431           for architectures which are either NUMA (Non-Uniform Memory Access)
 432           or have huge holes in the physical address space for other reasons.
 433           See <file:Documentation/vm/numa> for more.
 434
 435 config ARCH_FLATMEM_ENABLE
 436         def_bool y
 437
 438 config ARCH_SPARSEMEM_ENABLE
 439         def_bool y
 440         depends on ARCH_DISCONTIGMEM_ENABLE
 441         select SPARSEMEM_VMEMMAP_ENABLE
 442
 443 config ARCH_DISCONTIGMEM_DEFAULT
 444         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 445         depends on ARCH_DISCONTIGMEM_ENABLE
 446
 447 config NUMA
 448         bool "NUMA support"
 449         depends on !IA64_HP_SIM && !FLATMEM
 450         default y if IA64_SGI_SN2
 451         select ACPI_NUMA if ACPI
 452         help
 453           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 454           Access).  This option is for configuring high-end multiprocessor
 455           server systems.  If in doubt, say N.
 456
 457 config NODES_SHIFT
 458         int "Max num nodes shift(3-10)"
 459         range 3 10
 460         default "10"
 461         depends on NEED_MULTIPLE_NODES
 462         help
 463           This option specifies the maximum number of nodes in your SSI system.
 464           MAX_NUMNODES will be 2^(This value).
 465           If in doubt, use the default.
 466
 467 config ARCH_POPULATES_NODE_MAP
 468         def_bool y
 469
 470 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 471 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 472 config VIRTUAL_MEM_MAP
 473         bool "Virtual mem map"
 474         depends on !SPARSEMEM
 475         default y if !IA64_HP_SIM
 476         help
 477           Say Y to compile the kernel with support for a virtual mem map.
 478           This code also only takes effect if a memory hole of greater than
 479           1 Gb is found during boot.  You must turn this option on if you
 480           require the DISCONTIGMEM option for your machine. If you are
 481           unsure, say Y.
 482
 483 config HOLES_IN_ZONE
 484         bool
 485         default y if VIRTUAL_MEM_MAP
 486
 487 config HAVE_ARCH_EARLY_PFN_TO_NID
 488         def_bool NUMA && SPARSEMEM
 489
 490 config HAVE_ARCH_NODEDATA_EXTENSION
 491         def_bool y
 492         depends on NUMA
 493
 494 config USE_PERCPU_NUMA_NODE_ID
 495         def_bool y
 496         depends on NUMA
 497
 498 config HAVE_MEMORYLESS_NODES
 499         def_bool y
 500         depends on NUMA
 501
 502 config ARCH_PROC_KCORE_TEXT
 503         def_bool y
 504         depends on PROC_KCORE
 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 config DMAR_DEFAULT_ON
 639         def_bool y
 640         prompt "Enable DMA Remapping Devices by default"
 641         depends on DMAR
 642         help
 643           Selecting this option will enable a DMAR device at boot time if
 644           one is found. If this option is not selected, DMAR support can
 645           be enabled by passing intel_iommu=on to the kernel. It is
 646           recommended you say N here while the DMAR code remains
 647           experimental.
 648
 649 endmenu
 650
 651 endif
 652
 653 source "net/Kconfig"
 654
 655 source "drivers/Kconfig"
 656
 657 source "arch/ia64/hp/sim/Kconfig"
 658
 659 config MSPEC
 660         tristate "Memory special operations driver"
 661         depends on IA64
 662         select IA64_UNCACHED_ALLOCATOR
 663         help
 664           If you have an ia64 and you want to enable memory special
 665           operations support (formerly known as fetchop), say Y here,
 666           otherwise say N.
 667
 668 source "fs/Kconfig"
 669
 670 source "arch/ia64/Kconfig.debug"
 671
 672 source "security/Kconfig"
 673
 674 source "crypto/Kconfig"
 675
 676 source "arch/ia64/kvm/Kconfig"
 677
 678 source "lib/Kconfig"
 679
 680 #
 681 # Use the generic interrupt handling code in kernel/irq/:
 682 #
 683 config GENERIC_HARDIRQS
 684         bool
 685         default y
 686
 687 config GENERIC_IRQ_PROBE
 688         bool
 689         default y
 690
 691 config GENERIC_PENDING_IRQ
 692         bool
 693         depends on GENERIC_HARDIRQS && SMP
 694         default y
 695
 696 config IRQ_PER_CPU
 697         bool
 698         default y
 699
 700 config IOMMU_HELPER
 701         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
 702
 703 config IOMMU_API
 704         def_bool (DMAR)