arch/ia64/Kconfig

   1 #
   2 # For a description of the syntax of this configuration file,
   3 # see Documentation/kbuild/kconfig-language.txt.
   4 #
   5
   6 mainmenu "IA-64 Linux Kernel Configuration"
   7
   8 source "init/Kconfig"
   9
  10 source "kernel/Kconfig.freezer"
  11
  12 menu "Processor type and features"
  13
  14 config IA64
  15         bool
  16         select PCI if (!IA64_HP_SIM)
  17         select ACPI if (!IA64_HP_SIM)
  18         select PM if (!IA64_HP_SIM)
  19         select ARCH_SUPPORTS_MSI
  20         select HAVE_UNSTABLE_SCHED_CLOCK
  21         select HAVE_IDE
  22         select HAVE_OPROFILE
  23         select HAVE_KPROBES
  24         select HAVE_KRETPROBES
  25         select HAVE_FTRACE_MCOUNT_RECORD
  26         select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
  27         select HAVE_FUNCTION_TRACER
  28         select HAVE_DMA_ATTRS
  29         select HAVE_KVM
  30         select HAVE_ARCH_TRACEHOOK
  31         select HAVE_DMA_API_DEBUG
  32         default y
  33         help
  34           The Itanium Processor Family is Intel's 64-bit successor to
  35           the 32-bit X86 line.  The IA-64 Linux project has a home
  36           page at <http://www.linuxia64.org/> and a mailing list at
  37           <linux-ia64@vger.kernel.org>.
  38
  39 config 64BIT
  40         bool
  41         select ATA_NONSTANDARD if ATA
  42         default y
  43
  44 config ZONE_DMA
  45         def_bool y
  46         depends on !IA64_SGI_SN2
  47
  48 config QUICKLIST
  49         bool
  50         default y
  51
  52 config MMU
  53         bool
  54         default y
  55
  56 config SWIOTLB
  57        bool
  58
  59 config IOMMU_HELPER
  60        bool
  61
  62 config GENERIC_LOCKBREAK
  63         bool
  64         default y
  65         depends on SMP && PREEMPT
  66
  67 config RWSEM_XCHGADD_ALGORITHM
  68         bool
  69         default y
  70
  71 config HUGETLB_PAGE_SIZE_VARIABLE
  72         bool
  73         depends on HUGETLB_PAGE
  74         default y
  75
  76 config GENERIC_FIND_NEXT_BIT
  77         bool
  78         default y
  79
  80 config GENERIC_CALIBRATE_DELAY
  81         bool
  82         default y
  83
  84 config GENERIC_TIME
  85         bool
  86         default y
  87
  88 config GENERIC_TIME_VSYSCALL
  89         bool
  90         default y
  91
  92 config HAVE_LEGACY_PER_CPU_AREA
  93         def_bool y
  94
  95 config HAVE_SETUP_PER_CPU_AREA
  96         def_bool y
  97
  98 config DMI
  99         bool
 100         default y
 101
 102 config EFI
 103         bool
 104         default y
 105
 106 config GENERIC_IOMAP
 107         bool
 108         default y
 109
 110 config SCHED_OMIT_FRAME_POINTER
 111         bool
 112         default y
 113
 114 config IA64_UNCACHED_ALLOCATOR
 115         bool
 116         select GENERIC_ALLOCATOR
 117
 118 config AUDIT_ARCH
 119         bool
 120         default y
 121
 122 menuconfig PARAVIRT_GUEST
 123         bool "Paravirtualized guest support"
 124         help
 125           Say Y here to get to see options related to running Linux under
 126           various hypervisors.  This option alone does not add any kernel code.
 127
 128           If you say N, all options in this submenu will be skipped and disabled.
 129
 130 if PARAVIRT_GUEST
 131
 132 config PARAVIRT
 133         bool "Enable paravirtualization code"
 134         depends on PARAVIRT_GUEST
 135         default y
 136         bool
 137         default y
 138         help
 139           This changes the kernel so it can modify itself when it is run
 140           under a hypervisor, potentially improving performance significantly
 141           over full virtualization.  However, when run without a hypervisor
 142           the kernel is theoretically slower and slightly larger.
 143
 144
 145 source "arch/ia64/xen/Kconfig"
 146
 147 endif
 148
 149 choice
 150         prompt "System type"
 151         default IA64_GENERIC
 152
 153 config IA64_GENERIC
 154         bool "generic"
 155         select NUMA
 156         select ACPI_NUMA
 157         select SWIOTLB
 158         select PCI_MSI
 159         select DMAR
 160         help
 161           This selects the system type of your hardware.  A "generic" kernel
 162           will run on any supported IA-64 system.  However, if you configure
 163           a kernel for your specific system, it will be faster and smaller.
 164
 165           generic               For any supported IA-64 system
 166           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 167           DIG+Intel+IOMMU       For DIG systems with Intel IOMMU
 168           HP-zx1/sx1000         For HP systems
 169           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 170           SGI-SN2               For SGI Altix systems
 171           SGI-UV                For SGI UV systems
 172           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 173           Xen-domU              For xen domU system
 174
 175           If you don't know what to do, choose "generic".
 176
 177 config IA64_DIG
 178         bool "DIG-compliant"
 179         select SWIOTLB
 180
 181 config IA64_DIG_VTD
 182         bool "DIG+Intel+IOMMU"
 183         select DMAR
 184         select PCI_MSI
 185
 186 config IA64_HP_ZX1
 187         bool "HP-zx1/sx1000"
 188         help
 189           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 190           support for the HP I/O MMU.
 191
 192 config IA64_HP_ZX1_SWIOTLB
 193         bool "HP-zx1/sx1000 with software I/O TLB"
 194         select SWIOTLB
 195         help
 196           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 197           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 198           from support for the HP I/O MMU, this includes support for the software
 199           I/O TLB, which allows supporting the broken devices at the expense of
 200           wasting some kernel memory (about 2MB by default).
 201
 202 config IA64_SGI_SN2
 203         bool "SGI-SN2"
 204         select NUMA
 205         select ACPI_NUMA
 206         help
 207           Selecting this option will optimize the kernel for use on sn2 based
 208           systems, but the resulting kernel binary will not run on other
 209           types of ia64 systems.  If you have an SGI Altix system, it's safe
 210           to select this option.  If in doubt, select ia64 generic support
 211           instead.
 212
 213 config IA64_SGI_UV
 214         bool "SGI-UV"
 215         select NUMA
 216         select ACPI_NUMA
 217         select SWIOTLB
 218         help
 219           Selecting this option will optimize the kernel for use on UV based
 220           systems, but the resulting kernel binary will not run on other
 221           types of ia64 systems.  If you have an SGI UV system, it's safe
 222           to select this option.  If in doubt, select ia64 generic support
 223           instead.
 224
 225 config IA64_HP_SIM
 226         bool "Ski-simulator"
 227         select SWIOTLB
 228
 229 config IA64_XEN_GUEST
 230         bool "Xen guest"
 231         select SWIOTLB
 232         depends on XEN
 233         help
 234           Build a kernel that runs on Xen guest domain. At this moment only
 235           16KB page size in supported.
 236
 237 endchoice
 238
 239 choice
 240         prompt "Processor type"
 241         default ITANIUM
 242
 243 config ITANIUM
 244         bool "Itanium"
 245         help
 246           Select your IA-64 processor type.  The default is Itanium.
 247           This choice is safe for all IA-64 systems, but may not perform
 248           optimally on systems with, say, Itanium 2 or newer processors.
 249
 250 config MCKINLEY
 251         bool "Itanium 2"
 252         help
 253           Select this to configure for an Itanium 2 (McKinley) processor.
 254
 255 endchoice
 256
 257 choice
 258         prompt "Kernel page size"
 259         default IA64_PAGE_SIZE_16KB
 260
 261 config IA64_PAGE_SIZE_4KB
 262         bool "4KB"
 263         help
 264           This lets you select the page size of the kernel.  For best IA-64
 265           performance, a page size of 8KB or 16KB is recommended.  For best
 266           IA-32 compatibility, a page size of 4KB should be selected (the vast
 267           majority of IA-32 binaries work perfectly fine with a larger page
 268           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 269           be selected.
 270
 271           4KB                For best IA-32 compatibility
 272           8KB                For best IA-64 performance
 273           16KB               For best IA-64 performance
 274           64KB               Requires Itanium 2 or newer processor.
 275
 276           If you don't know what to do, choose 16KB.
 277
 278 config IA64_PAGE_SIZE_8KB
 279         bool "8KB"
 280
 281 config IA64_PAGE_SIZE_16KB
 282         bool "16KB"
 283
 284 config IA64_PAGE_SIZE_64KB
 285         depends on !ITANIUM
 286         bool "64KB"
 287
 288 endchoice
 289
 290 choice
 291         prompt "Page Table Levels"
 292         default PGTABLE_3
 293
 294 config PGTABLE_3
 295         bool "3 Levels"
 296
 297 config PGTABLE_4
 298         depends on !IA64_PAGE_SIZE_64KB
 299         bool "4 Levels"
 300
 301 endchoice
 302
 303 if IA64_HP_SIM
 304 config HZ
 305         default 32
 306 endif
 307
 308 if !IA64_HP_SIM
 309 source kernel/Kconfig.hz
 310 endif
 311
 312 config IA64_BRL_EMU
 313         bool
 314         depends on ITANIUM
 315         default y
 316
 317 # align cache-sensitive data to 128 bytes
 318 config IA64_L1_CACHE_SHIFT
 319         int
 320         default "7" if MCKINLEY
 321         default "6" if ITANIUM
 322
 323 config IA64_CYCLONE
 324         bool "Cyclone (EXA) Time Source support"
 325         help
 326           Say Y here to enable support for IBM EXA Cyclone time source.
 327           If you're unsure, answer N.
 328
 329 config IOSAPIC
 330         bool
 331         depends on !IA64_HP_SIM
 332         default y
 333
 334 config FORCE_MAX_ZONEORDER
 335         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 336         range 11 17  if !HUGETLB_PAGE
 337         default "17" if HUGETLB_PAGE
 338         default "11"
 339
 340 config VIRT_CPU_ACCOUNTING
 341         bool "Deterministic task and CPU time accounting"
 342         default n
 343         help
 344           Select this option to enable more accurate task and CPU time
 345           accounting.  This is done by reading a CPU counter on each
 346           kernel entry and exit and on transitions within the kernel
 347           between system, softirq and hardirq state, so there is a
 348           small performance impact.
 349           If in doubt, say N here.
 350
 351 config SMP
 352         bool "Symmetric multi-processing support"
 353         select USE_GENERIC_SMP_HELPERS
 354         help
 355           This enables support for systems with more than one CPU. If you have
 356           a system with only one CPU, say N.  If you have a system with more
 357           than one CPU, say Y.
 358
 359           If you say N here, the kernel will run on single and multiprocessor
 360           systems, but will use only one CPU of a multiprocessor system.  If
 361           you say Y here, the kernel will run on many, but not all,
 362           single processor systems.  On a single processor system, the kernel
 363           will run faster if you say N here.
 364
 365           See also the SMP-HOWTO available at
 366           <http://www.tldp.org/docs.html#howto>.
 367
 368           If you don't know what to do here, say N.
 369
 370 config NR_CPUS
 371         int "Maximum number of CPUs (2-4096)"
 372         range 2 4096
 373         depends on SMP
 374         default "4096"
 375         help
 376           You should set this to the number of CPUs in your system, but
 377           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 378           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 379           than 64 will cause the use of a CPU mask array, causing a small
 380           performance hit.
 381
 382 config HOTPLUG_CPU
 383         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 384         depends on SMP && EXPERIMENTAL
 385         select HOTPLUG
 386         default n
 387         ---help---
 388           Say Y here to experiment with turning CPUs off and on.  CPUs
 389           can be controlled through /sys/devices/system/cpu/cpu#.
 390           Say N if you want to disable CPU hotplug.
 391
 392 config ARCH_ENABLE_MEMORY_HOTPLUG
 393         def_bool y
 394
 395 config ARCH_ENABLE_MEMORY_HOTREMOVE
 396         def_bool y
 397
 398 config SCHED_SMT
 399         bool "SMT scheduler support"
 400         depends on SMP
 401         help
 402           Improves the CPU scheduler's decision making when dealing with
 403           Intel IA64 chips with MultiThreading at a cost of slightly increased
 404           overhead in some places. If unsure say N here.
 405
 406 config PERMIT_BSP_REMOVE
 407         bool "Support removal of Bootstrap Processor"
 408         depends on HOTPLUG_CPU
 409         default n
 410         ---help---
 411         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 412         support.
 413
 414 config FORCE_CPEI_RETARGET
 415         bool "Force assumption that CPEI can be re-targetted"
 416         depends on PERMIT_BSP_REMOVE
 417         default n
 418         ---help---
 419         Say Y if you need to force the assumption that CPEI can be re-targetted to
 420         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 421         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 422         This option it useful to enable this feature on older BIOS's as well.
 423         You can also enable this by using boot command line option force_cpei=1.
 424
 425 source "kernel/Kconfig.preempt"
 426
 427 source "mm/Kconfig"
 428
 429 config ARCH_SELECT_MEMORY_MODEL
 430         def_bool y
 431
 432 config ARCH_DISCONTIGMEM_ENABLE
 433         def_bool y
 434         help
 435           Say Y to support efficient handling of discontiguous physical memory,
 436           for architectures which are either NUMA (Non-Uniform Memory Access)
 437           or have huge holes in the physical address space for other reasons.
 438           See <file:Documentation/vm/numa> for more.
 439
 440 config ARCH_FLATMEM_ENABLE
 441         def_bool y
 442
 443 config ARCH_SPARSEMEM_ENABLE
 444         def_bool y
 445         depends on ARCH_DISCONTIGMEM_ENABLE
 446         select SPARSEMEM_VMEMMAP_ENABLE
 447
 448 config ARCH_DISCONTIGMEM_DEFAULT
 449         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 450         depends on ARCH_DISCONTIGMEM_ENABLE
 451
 452 config NUMA
 453         bool "NUMA support"
 454         depends on !IA64_HP_SIM && !FLATMEM
 455         default y if IA64_SGI_SN2
 456         select ACPI_NUMA if ACPI
 457         help
 458           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 459           Access).  This option is for configuring high-end multiprocessor
 460           server systems.  If in doubt, say N.
 461
 462 config NODES_SHIFT
 463         int "Max num nodes shift(3-10)"
 464         range 3 10
 465         default "10"
 466         depends on NEED_MULTIPLE_NODES
 467         help
 468           This option specifies the maximum number of nodes in your SSI system.
 469           MAX_NUMNODES will be 2^(This value).
 470           If in doubt, use the default.
 471
 472 config ARCH_POPULATES_NODE_MAP
 473         def_bool y
 474
 475 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 476 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 477 config VIRTUAL_MEM_MAP
 478         bool "Virtual mem map"
 479         depends on !SPARSEMEM
 480         default y if !IA64_HP_SIM
 481         help
 482           Say Y to compile the kernel with support for a virtual mem map.
 483           This code also only takes effect if a memory hole of greater than
 484           1 Gb is found during boot.  You must turn this option on if you
 485           require the DISCONTIGMEM option for your machine. If you are
 486           unsure, say Y.
 487
 488 config HOLES_IN_ZONE
 489         bool
 490         default y if VIRTUAL_MEM_MAP
 491
 492 config HAVE_ARCH_EARLY_PFN_TO_NID
 493         def_bool NUMA && SPARSEMEM
 494
 495 config HAVE_ARCH_NODEDATA_EXTENSION
 496         def_bool y
 497         depends on NUMA
 498
 499 config IA32_SUPPORT
 500         bool "Support for Linux/x86 binaries"
 501         help
 502           IA-64 processors can execute IA-32 (X86) instructions.  By
 503           saying Y here, the kernel will include IA-32 system call
 504           emulation support which makes it possible to transparently
 505           run IA-32 Linux binaries on an IA-64 Linux system.
 506           If in doubt, say Y.
 507
 508 config COMPAT
 509         bool
 510         depends on IA32_SUPPORT
 511         default y
 512
 513 config COMPAT_FOR_U64_ALIGNMENT
 514         def_bool COMPAT
 515
 516 config IA64_MCA_RECOVERY
 517         tristate "MCA recovery from errors other than TLB."
 518
 519 config PERFMON
 520         bool "Performance monitor support"
 521         help
 522           Selects whether support for the IA-64 performance monitor hardware
 523           is included in the kernel.  This makes some kernel data-structures a
 524           little bigger and slows down execution a bit, but it is generally
 525           a good idea to turn this on.  If you're unsure, say Y.
 526
 527 config IA64_PALINFO
 528         tristate "/proc/pal support"
 529         help
 530           If you say Y here, you are able to get PAL (Processor Abstraction
 531           Layer) information in /proc/pal.  This contains useful information
 532           about the processors in your systems, such as cache and TLB sizes
 533           and the PAL firmware version in use.
 534
 535           To use this option, you have to ensure that the "/proc file system
 536           support" (CONFIG_PROC_FS) is enabled, too.
 537
 538 config IA64_MC_ERR_INJECT
 539         tristate "MC error injection support"
 540         help
 541           Adds support for MC error injection. If enabled, the kernel
 542           will provide a sysfs interface for user applications to
 543           call MC error injection PAL procedures to inject various errors.
 544           This is a useful tool for MCA testing.
 545
 546           If you're unsure, do not select this option.
 547
 548 config SGI_SN
 549         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 550
 551 config IA64_ESI
 552         bool "ESI (Extensible SAL Interface) support"
 553         help
 554           If you say Y here, support is built into the kernel to
 555           make ESI calls.  ESI calls are used to support vendor-specific
 556           firmware extensions, such as the ability to inject memory-errors
 557           for test-purposes.  If you're unsure, say N.
 558
 559 config IA64_HP_AML_NFW
 560         bool "Support ACPI AML calls to native firmware"
 561         help
 562           This driver installs a global ACPI Operation Region handler for
 563           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 564           native firmware functions.  The driver installs the OpRegion
 565           handler if there is an HPQ5001 device or if the user supplies
 566           the "force" module parameter, e.g., with the "aml_nfw.force"
 567           kernel command line option.
 568
 569 source "drivers/sn/Kconfig"
 570
 571 config KEXEC
 572         bool "kexec system call (EXPERIMENTAL)"
 573         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 574         help
 575           kexec is a system call that implements the ability to shutdown your
 576           current kernel, and to start another kernel.  It is like a reboot
 577           but it is independent of the system firmware.   And like a reboot
 578           you can start any kernel with it, not just Linux.
 579
 580           The name comes from the similarity to the exec system call.
 581
 582           It is an ongoing process to be certain the hardware in a machine
 583           is properly shutdown, so do not be surprised if this code does not
 584           initially work for you.  It may help to enable device hotplugging
 585           support.  As of this writing the exact hardware interface is
 586           strongly in flux, so no good recommendation can be made.
 587
 588 config CRASH_DUMP
 589           bool "kernel crash dumps"
 590           depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 591           help
 592             Generate crash dump after being started by kexec.
 593
 594 source "drivers/firmware/Kconfig"
 595
 596 source "fs/Kconfig.binfmt"
 597
 598 endmenu
 599
 600 menu "Power management and ACPI options"
 601
 602 source "kernel/power/Kconfig"
 603
 604 source "drivers/acpi/Kconfig"
 605
 606 if PM
 607
 608 source "arch/ia64/kernel/cpufreq/Kconfig"
 609
 610 endif
 611
 612 endmenu
 613
 614 if !IA64_HP_SIM
 615
 616 menu "Bus options (PCI, PCMCIA)"
 617
 618 config PCI
 619         bool "PCI support"
 620         help
 621           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 622           here unless you are using a simulator without PCI support.
 623
 624 config PCI_DOMAINS
 625         def_bool PCI
 626
 627 config PCI_SYSCALL
 628         def_bool PCI
 629
 630 source "drivers/pci/pcie/Kconfig"
 631
 632 source "drivers/pci/Kconfig"
 633
 634 source "drivers/pci/hotplug/Kconfig"
 635
 636 source "drivers/pcmcia/Kconfig"
 637
 638 config DMAR
 639         bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
 640         depends on IA64_GENERIC && ACPI && EXPERIMENTAL
 641         help
 642           DMA remapping (DMAR) devices support enables independent address
 643           translations for Direct Memory Access (DMA) from devices.
 644           These DMA remapping devices are reported via ACPI tables
 645           and include PCI device scope covered by these DMA
 646           remapping devices.
 647
 648 config DMAR_DEFAULT_ON
 649         def_bool y
 650         prompt "Enable DMA Remapping Devices by default"
 651         depends on DMAR
 652         help
 653           Selecting this option will enable a DMAR device at boot time if
 654           one is found. If this option is not selected, DMAR support can
 655           be enabled by passing intel_iommu=on to the kernel. It is
 656           recommended you say N here while the DMAR code remains
 657           experimental.
 658
 659 endmenu
 660
 661 endif
 662
 663 source "net/Kconfig"
 664
 665 source "drivers/Kconfig"
 666
 667 source "arch/ia64/hp/sim/Kconfig"
 668
 669 config MSPEC
 670         tristate "Memory special operations driver"
 671         depends on IA64
 672         select IA64_UNCACHED_ALLOCATOR
 673         help
 674           If you have an ia64 and you want to enable memory special
 675           operations support (formerly known as fetchop), say Y here,
 676           otherwise say N.
 677
 678 source "fs/Kconfig"
 679
 680 source "arch/ia64/Kconfig.debug"
 681
 682 source "security/Kconfig"
 683
 684 source "crypto/Kconfig"
 685
 686 source "arch/ia64/kvm/Kconfig"
 687
 688 source "lib/Kconfig"
 689
 690 #
 691 # Use the generic interrupt handling code in kernel/irq/:
 692 #
 693 config GENERIC_HARDIRQS
 694         bool
 695         default y
 696
 697 config GENERIC_IRQ_PROBE
 698         bool
 699         default y
 700
 701 config GENERIC_PENDING_IRQ
 702         bool
 703         depends on GENERIC_HARDIRQS && SMP
 704         default y
 705
 706 config IRQ_PER_CPU
 707         bool
 708         default y
 709
 710 config IOMMU_HELPER
 711         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
 712
 713 config IOMMU_API
 714         def_bool (DMAR)