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