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