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 menu "Processor type and features"
  11
  12 config IA64
  13         bool
  14         select PCI if (!IA64_HP_SIM)
  15         select ACPI if (!IA64_HP_SIM)
  16         select PM if (!IA64_HP_SIM)
  17         select ARCH_SUPPORTS_MSI
  18         select HAVE_IDE
  19         select HAVE_OPROFILE
  20         select HAVE_KPROBES
  21         select HAVE_KRETPROBES
  22         default y
  23         help
  24           The Itanium Processor Family is Intel's 64-bit successor to
  25           the 32-bit X86 line.  The IA-64 Linux project has a home
  26           page at <http://www.linuxia64.org/> and a mailing list at
  27           <linux-ia64@vger.kernel.org>.
  28
  29 config 64BIT
  30         bool
  31         select ATA_NONSTANDARD if ATA
  32         default y
  33
  34 config ZONE_DMA
  35         def_bool y
  36         depends on !IA64_SGI_SN2
  37
  38 config QUICKLIST
  39         bool
  40         default y
  41
  42 config MMU
  43         bool
  44         default y
  45
  46 config SWIOTLB
  47        bool
  48
  49 config GENERIC_LOCKBREAK
  50         bool
  51         default y
  52         depends on SMP && PREEMPT
  53
  54 config RWSEM_XCHGADD_ALGORITHM
  55         bool
  56         default y
  57
  58 config ARCH_HAS_ILOG2_U32
  59         bool
  60         default n
  61
  62 config ARCH_HAS_ILOG2_U64
  63         bool
  64         default n
  65
  66 config HUGETLB_PAGE_SIZE_VARIABLE
  67         bool
  68         depends on HUGETLB_PAGE
  69         default y
  70
  71 config GENERIC_FIND_NEXT_BIT
  72         bool
  73         default y
  74
  75 config GENERIC_CALIBRATE_DELAY
  76         bool
  77         default y
  78
  79 config GENERIC_TIME
  80         bool
  81         default y
  82
  83 config GENERIC_TIME_VSYSCALL
  84         bool
  85         default y
  86
  87 config HAVE_SETUP_PER_CPU_AREA
  88         def_bool y
  89
  90 config DMI
  91         bool
  92         default y
  93
  94 config EFI
  95         bool
  96         default y
  97
  98 config GENERIC_IOMAP
  99         bool
 100         default y
 101
 102 config SCHED_NO_NO_OMIT_FRAME_POINTER
 103         bool
 104         default y
 105
 106 config IA64_UNCACHED_ALLOCATOR
 107         bool
 108         select GENERIC_ALLOCATOR
 109
 110 config AUDIT_ARCH
 111         bool
 112         default y
 113
 114 choice
 115         prompt "System type"
 116         default IA64_GENERIC
 117
 118 config IA64_GENERIC
 119         bool "generic"
 120         select NUMA
 121         select ACPI_NUMA
 122         select SWIOTLB
 123         help
 124           This selects the system type of your hardware.  A "generic" kernel
 125           will run on any supported IA-64 system.  However, if you configure
 126           a kernel for your specific system, it will be faster and smaller.
 127
 128           generic               For any supported IA-64 system
 129           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 130           HP-zx1/sx1000         For HP systems
 131           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 132           SGI-SN2               For SGI Altix systems
 133           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 134
 135           If you don't know what to do, choose "generic".
 136
 137 config IA64_DIG
 138         bool "DIG-compliant"
 139         select SWIOTLB
 140
 141 config IA64_HP_ZX1
 142         bool "HP-zx1/sx1000"
 143         help
 144           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 145           support for the HP I/O MMU.
 146
 147 config IA64_HP_ZX1_SWIOTLB
 148         bool "HP-zx1/sx1000 with software I/O TLB"
 149         select SWIOTLB
 150         help
 151           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 152           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 153           from support for the HP I/O MMU, this includes support for the software
 154           I/O TLB, which allows supporting the broken devices at the expense of
 155           wasting some kernel memory (about 2MB by default).
 156
 157 config IA64_SGI_SN2
 158         bool "SGI-SN2"
 159         select NUMA
 160         select ACPI_NUMA
 161         help
 162           Selecting this option will optimize the kernel for use on sn2 based
 163           systems, but the resulting kernel binary will not run on other
 164           types of ia64 systems.  If you have an SGI Altix system, it's safe
 165           to select this option.  If in doubt, select ia64 generic support
 166           instead.
 167
 168 config IA64_HP_SIM
 169         bool "Ski-simulator"
 170         select SWIOTLB
 171
 172 endchoice
 173
 174 choice
 175         prompt "Processor type"
 176         default ITANIUM
 177
 178 config ITANIUM
 179         bool "Itanium"
 180         help
 181           Select your IA-64 processor type.  The default is Itanium.
 182           This choice is safe for all IA-64 systems, but may not perform
 183           optimally on systems with, say, Itanium 2 or newer processors.
 184
 185 config MCKINLEY
 186         bool "Itanium 2"
 187         help
 188           Select this to configure for an Itanium 2 (McKinley) processor.
 189
 190 endchoice
 191
 192 choice
 193         prompt "Kernel page size"
 194         default IA64_PAGE_SIZE_16KB
 195
 196 config IA64_PAGE_SIZE_4KB
 197         bool "4KB"
 198         help
 199           This lets you select the page size of the kernel.  For best IA-64
 200           performance, a page size of 8KB or 16KB is recommended.  For best
 201           IA-32 compatibility, a page size of 4KB should be selected (the vast
 202           majority of IA-32 binaries work perfectly fine with a larger page
 203           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 204           be selected.
 205
 206           4KB                For best IA-32 compatibility
 207           8KB                For best IA-64 performance
 208           16KB               For best IA-64 performance
 209           64KB               Requires Itanium 2 or newer processor.
 210
 211           If you don't know what to do, choose 16KB.
 212
 213 config IA64_PAGE_SIZE_8KB
 214         bool "8KB"
 215
 216 config IA64_PAGE_SIZE_16KB
 217         bool "16KB"
 218
 219 config IA64_PAGE_SIZE_64KB
 220         depends on !ITANIUM
 221         bool "64KB"
 222
 223 endchoice
 224
 225 choice
 226         prompt "Page Table Levels"
 227         default PGTABLE_3
 228
 229 config PGTABLE_3
 230         bool "3 Levels"
 231
 232 config PGTABLE_4
 233         depends on !IA64_PAGE_SIZE_64KB
 234         bool "4 Levels"
 235
 236 endchoice
 237
 238 if IA64_HP_SIM
 239 config HZ
 240         default 32
 241 endif
 242
 243 if !IA64_HP_SIM
 244 source kernel/Kconfig.hz
 245 endif
 246
 247 config IA64_BRL_EMU
 248         bool
 249         depends on ITANIUM
 250         default y
 251
 252 # align cache-sensitive data to 128 bytes
 253 config IA64_L1_CACHE_SHIFT
 254         int
 255         default "7" if MCKINLEY
 256         default "6" if ITANIUM
 257
 258 config IA64_CYCLONE
 259         bool "Cyclone (EXA) Time Source support"
 260         help
 261           Say Y here to enable support for IBM EXA Cyclone time source.
 262           If you're unsure, answer N.
 263
 264 config IOSAPIC
 265         bool
 266         depends on !IA64_HP_SIM
 267         default y
 268
 269 config FORCE_MAX_ZONEORDER
 270         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 271         range 11 17  if !HUGETLB_PAGE
 272         default "17" if HUGETLB_PAGE
 273         default "11"
 274
 275 config VIRT_CPU_ACCOUNTING
 276         bool "Deterministic task and CPU time accounting"
 277         default n
 278         help
 279           Select this option to enable more accurate task and CPU time
 280           accounting.  This is done by reading a CPU counter on each
 281           kernel entry and exit and on transitions within the kernel
 282           between system, softirq and hardirq state, so there is a
 283           small performance impact.
 284           If in doubt, say N here.
 285
 286 config SMP
 287         bool "Symmetric multi-processing support"
 288         help
 289           This enables support for systems with more than one CPU. If you have
 290           a system with only one CPU, say N.  If you have a system with more
 291           than one CPU, say Y.
 292
 293           If you say N here, the kernel will run on single and multiprocessor
 294           systems, but will use only one CPU of a multiprocessor system.  If
 295           you say Y here, the kernel will run on many, but not all,
 296           single processor systems.  On a single processor system, the kernel
 297           will run faster if you say N here.
 298
 299           See also the SMP-HOWTO available at
 300           <http://www.tldp.org/docs.html#howto>.
 301
 302           If you don't know what to do here, say N.
 303
 304 config NR_CPUS
 305         int "Maximum number of CPUs (2-1024)"
 306         range 2 1024
 307         depends on SMP
 308         default "1024"
 309         help
 310           You should set this to the number of CPUs in your system, but
 311           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 312           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 313           than 64 will cause the use of a CPU mask array, causing a small
 314           performance hit.
 315
 316 config HOTPLUG_CPU
 317         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 318         depends on SMP && EXPERIMENTAL
 319         select HOTPLUG
 320         default n
 321         ---help---
 322           Say Y here to experiment with turning CPUs off and on.  CPUs
 323           can be controlled through /sys/devices/system/cpu/cpu#.
 324           Say N if you want to disable CPU hotplug.
 325
 326 config ARCH_ENABLE_MEMORY_HOTPLUG
 327         def_bool y
 328
 329 config ARCH_ENABLE_MEMORY_HOTREMOVE
 330         def_bool y
 331
 332 config SCHED_SMT
 333         bool "SMT scheduler support"
 334         depends on SMP
 335         help
 336           Improves the CPU scheduler's decision making when dealing with
 337           Intel IA64 chips with MultiThreading at a cost of slightly increased
 338           overhead in some places. If unsure say N here.
 339
 340 config PERMIT_BSP_REMOVE
 341         bool "Support removal of Bootstrap Processor"
 342         depends on HOTPLUG_CPU
 343         default n
 344         ---help---
 345         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 346         support.
 347
 348 config FORCE_CPEI_RETARGET
 349         bool "Force assumption that CPEI can be re-targetted"
 350         depends on PERMIT_BSP_REMOVE
 351         default n
 352         ---help---
 353         Say Y if you need to force the assumption that CPEI can be re-targetted to
 354         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 355         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 356         This option it useful to enable this feature on older BIOS's as well.
 357         You can also enable this by using boot command line option force_cpei=1.
 358
 359 source "kernel/Kconfig.preempt"
 360
 361 source "mm/Kconfig"
 362
 363 config ARCH_SELECT_MEMORY_MODEL
 364         def_bool y
 365
 366 config ARCH_DISCONTIGMEM_ENABLE
 367         def_bool y
 368         help
 369           Say Y to support efficient handling of discontiguous physical memory,
 370           for architectures which are either NUMA (Non-Uniform Memory Access)
 371           or have huge holes in the physical address space for other reasons.
 372           See <file:Documentation/vm/numa> for more.
 373
 374 config ARCH_FLATMEM_ENABLE
 375         def_bool y
 376
 377 config ARCH_SPARSEMEM_ENABLE
 378         def_bool y
 379         depends on ARCH_DISCONTIGMEM_ENABLE
 380         select SPARSEMEM_VMEMMAP_ENABLE
 381
 382 config ARCH_DISCONTIGMEM_DEFAULT
 383         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 384         depends on ARCH_DISCONTIGMEM_ENABLE
 385
 386 config NUMA
 387         bool "NUMA support"
 388         depends on !IA64_HP_SIM && !FLATMEM
 389         default y if IA64_SGI_SN2
 390         select ACPI_NUMA if ACPI
 391         help
 392           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 393           Access).  This option is for configuring high-end multiprocessor
 394           server systems.  If in doubt, say N.
 395
 396 config NODES_SHIFT
 397         int "Max num nodes shift(3-10)"
 398         range 3 10
 399         default "10"
 400         depends on NEED_MULTIPLE_NODES
 401         help
 402           This option specifies the maximum number of nodes in your SSI system.
 403           MAX_NUMNODES will be 2^(This value).
 404           If in doubt, use the default.
 405
 406 config ARCH_POPULATES_NODE_MAP
 407         def_bool y
 408
 409 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 410 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 411 config VIRTUAL_MEM_MAP
 412         bool "Virtual mem map"
 413         depends on !SPARSEMEM
 414         default y if !IA64_HP_SIM
 415         help
 416           Say Y to compile the kernel with support for a virtual mem map.
 417           This code also only takes effect if a memory hole of greater than
 418           1 Gb is found during boot.  You must turn this option on if you
 419           require the DISCONTIGMEM option for your machine. If you are
 420           unsure, say Y.
 421
 422 config HOLES_IN_ZONE
 423         bool
 424         default y if VIRTUAL_MEM_MAP
 425
 426 config HAVE_ARCH_EARLY_PFN_TO_NID
 427         def_bool y
 428         depends on NEED_MULTIPLE_NODES
 429
 430 config HAVE_ARCH_NODEDATA_EXTENSION
 431         def_bool y
 432         depends on NUMA
 433
 434 config IA32_SUPPORT
 435         bool "Support for Linux/x86 binaries"
 436         help
 437           IA-64 processors can execute IA-32 (X86) instructions.  By
 438           saying Y here, the kernel will include IA-32 system call
 439           emulation support which makes it possible to transparently
 440           run IA-32 Linux binaries on an IA-64 Linux system.
 441           If in doubt, say Y.
 442
 443 config COMPAT
 444         bool
 445         depends on IA32_SUPPORT
 446         default y
 447
 448 config COMPAT_FOR_U64_ALIGNMENT
 449         def_bool COMPAT
 450
 451 config IA64_MCA_RECOVERY
 452         tristate "MCA recovery from errors other than TLB."
 453
 454 config PERFMON
 455         bool "Performance monitor support"
 456         help
 457           Selects whether support for the IA-64 performance monitor hardware
 458           is included in the kernel.  This makes some kernel data-structures a
 459           little bigger and slows down execution a bit, but it is generally
 460           a good idea to turn this on.  If you're unsure, say Y.
 461
 462 config IA64_PALINFO
 463         tristate "/proc/pal support"
 464         help
 465           If you say Y here, you are able to get PAL (Processor Abstraction
 466           Layer) information in /proc/pal.  This contains useful information
 467           about the processors in your systems, such as cache and TLB sizes
 468           and the PAL firmware version in use.
 469
 470           To use this option, you have to ensure that the "/proc file system
 471           support" (CONFIG_PROC_FS) is enabled, too.
 472
 473 config IA64_MC_ERR_INJECT
 474         tristate "MC error injection support"
 475         help
 476           Adds support for MC error injection. If enabled, the kernel
 477           will provide a sysfs interface for user applications to
 478           call MC error injection PAL procedures to inject various errors.
 479           This is a useful tool for MCA testing.
 480
 481           If you're unsure, do not select this option.
 482
 483 config SGI_SN
 484         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 485
 486 config IA64_ESI
 487         bool "ESI (Extensible SAL Interface) support"
 488         help
 489           If you say Y here, support is built into the kernel to
 490           make ESI calls.  ESI calls are used to support vendor-specific
 491           firmware extensions, such as the ability to inject memory-errors
 492           for test-purposes.  If you're unsure, say N.
 493
 494 config IA64_HP_AML_NFW
 495         bool "Support ACPI AML calls to native firmware"
 496         help
 497           This driver installs a global ACPI Operation Region handler for
 498           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 499           native firmware functions.  The driver installs the OpRegion
 500           handler if there is an HPQ5001 device or if the user supplies
 501           the "force" module parameter, e.g., with the "aml_nfw.force"
 502           kernel command line option.
 503
 504 source "drivers/sn/Kconfig"
 505
 506 config KEXEC
 507         bool "kexec system call (EXPERIMENTAL)"
 508         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 509         help
 510           kexec is a system call that implements the ability to shutdown your
 511           current kernel, and to start another kernel.  It is like a reboot
 512           but it is independent of the system firmware.   And like a reboot
 513           you can start any kernel with it, not just Linux.
 514
 515           The name comes from the similarity to the exec system call.
 516
 517           It is an ongoing process to be certain the hardware in a machine
 518           is properly shutdown, so do not be surprised if this code does not
 519           initially work for you.  It may help to enable device hotplugging
 520           support.  As of this writing the exact hardware interface is
 521           strongly in flux, so no good recommendation can be made.
 522
 523 config CRASH_DUMP
 524           bool "kernel crash dumps (EXPERIMENTAL)"
 525           depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 526           help
 527             Generate crash dump after being started by kexec.
 528
 529 source "drivers/firmware/Kconfig"
 530
 531 source "fs/Kconfig.binfmt"
 532
 533 endmenu
 534
 535 menu "Power management and ACPI"
 536
 537 source "kernel/power/Kconfig"
 538
 539 source "drivers/acpi/Kconfig"
 540
 541 if PM
 542
 543 source "arch/ia64/kernel/cpufreq/Kconfig"
 544
 545 endif
 546
 547 endmenu
 548
 549 if !IA64_HP_SIM
 550
 551 menu "Bus options (PCI, PCMCIA)"
 552
 553 config PCI
 554         bool "PCI support"
 555         help
 556           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 557           here unless you are using a simulator without PCI support.
 558
 559 config PCI_DOMAINS
 560         def_bool PCI
 561
 562 config PCI_SYSCALL
 563         def_bool PCI
 564
 565 source "drivers/pci/pcie/Kconfig"
 566
 567 source "drivers/pci/Kconfig"
 568
 569 source "drivers/pci/hotplug/Kconfig"
 570
 571 source "drivers/pcmcia/Kconfig"
 572
 573 endmenu
 574
 575 endif
 576
 577 source "net/Kconfig"
 578
 579 source "drivers/Kconfig"
 580
 581 config MSPEC
 582         tristate "Memory special operations driver"
 583         depends on IA64
 584         select IA64_UNCACHED_ALLOCATOR
 585         help
 586           If you have an ia64 and you want to enable memory special
 587           operations support (formerly known as fetchop), say Y here,
 588           otherwise say N.
 589
 590 source "fs/Kconfig"
 591
 592 source "lib/Kconfig"
 593
 594 #
 595 # Use the generic interrupt handling code in kernel/irq/:
 596 #
 597 config GENERIC_HARDIRQS
 598         bool
 599         default y
 600
 601 config GENERIC_IRQ_PROBE
 602         bool
 603         default y
 604
 605 config GENERIC_PENDING_IRQ
 606         bool
 607         depends on GENERIC_HARDIRQS && SMP
 608         default y
 609
 610 config IRQ_PER_CPU
 611         bool
 612         default y
 613
 614 config IOMMU_HELPER
 615         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC)
 616
 617 source "arch/ia64/hp/sim/Kconfig"
 618
 619 source "arch/ia64/Kconfig.debug"
 620
 621 source "security/Kconfig"
 622
 623 source "crypto/Kconfig"