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 IA64_SGI_SN_XP
 270         tristate "Support communication between SGI SSIs"
 271         depends on IA64_GENERIC || IA64_SGI_SN2
 272         select IA64_UNCACHED_ALLOCATOR
 273         help
 274           An SGI machine can be divided into multiple Single System
 275           Images which act independently of each other and have
 276           hardware based memory protection from the others.  Enabling
 277           this feature will allow for direct communication between SSIs
 278           based on a network adapter and DMA messaging.
 279
 280 config FORCE_MAX_ZONEORDER
 281         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 282         range 11 17  if !HUGETLB_PAGE
 283         default "17" if HUGETLB_PAGE
 284         default "11"
 285
 286 config VIRT_CPU_ACCOUNTING
 287         bool "Deterministic task and CPU time accounting"
 288         default n
 289         help
 290           Select this option to enable more accurate task and CPU time
 291           accounting.  This is done by reading a CPU counter on each
 292           kernel entry and exit and on transitions within the kernel
 293           between system, softirq and hardirq state, so there is a
 294           small performance impact.
 295           If in doubt, say N here.
 296
 297 config SMP
 298         bool "Symmetric multi-processing support"
 299         help
 300           This enables support for systems with more than one CPU. If you have
 301           a system with only one CPU, say N.  If you have a system with more
 302           than one CPU, say Y.
 303
 304           If you say N here, the kernel will run on single and multiprocessor
 305           systems, but will use only one CPU of a multiprocessor system.  If
 306           you say Y here, the kernel will run on many, but not all,
 307           single processor systems.  On a single processor system, the kernel
 308           will run faster if you say N here.
 309
 310           See also the SMP-HOWTO available at
 311           <http://www.tldp.org/docs.html#howto>.
 312
 313           If you don't know what to do here, say N.
 314
 315 config NR_CPUS
 316         int "Maximum number of CPUs (2-1024)"
 317         range 2 1024
 318         depends on SMP
 319         default "1024"
 320         help
 321           You should set this to the number of CPUs in your system, but
 322           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 323           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 324           than 64 will cause the use of a CPU mask array, causing a small
 325           performance hit.
 326
 327 config HOTPLUG_CPU
 328         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 329         depends on SMP && EXPERIMENTAL
 330         select HOTPLUG
 331         default n
 332         ---help---
 333           Say Y here to experiment with turning CPUs off and on.  CPUs
 334           can be controlled through /sys/devices/system/cpu/cpu#.
 335           Say N if you want to disable CPU hotplug.
 336
 337 config ARCH_ENABLE_MEMORY_HOTPLUG
 338         def_bool y
 339
 340 config ARCH_ENABLE_MEMORY_HOTREMOVE
 341         def_bool y
 342
 343 config SCHED_SMT
 344         bool "SMT scheduler support"
 345         depends on SMP
 346         help
 347           Improves the CPU scheduler's decision making when dealing with
 348           Intel IA64 chips with MultiThreading at a cost of slightly increased
 349           overhead in some places. If unsure say N here.
 350
 351 config PERMIT_BSP_REMOVE
 352         bool "Support removal of Bootstrap Processor"
 353         depends on HOTPLUG_CPU
 354         default n
 355         ---help---
 356         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 357         support.
 358
 359 config FORCE_CPEI_RETARGET
 360         bool "Force assumption that CPEI can be re-targetted"
 361         depends on PERMIT_BSP_REMOVE
 362         default n
 363         ---help---
 364         Say Y if you need to force the assumption that CPEI can be re-targetted to
 365         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 366         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 367         This option it useful to enable this feature on older BIOS's as well.
 368         You can also enable this by using boot command line option force_cpei=1.
 369
 370 source "kernel/Kconfig.preempt"
 371
 372 source "mm/Kconfig"
 373
 374 config ARCH_SELECT_MEMORY_MODEL
 375         def_bool y
 376
 377 config ARCH_DISCONTIGMEM_ENABLE
 378         def_bool y
 379         help
 380           Say Y to support efficient handling of discontiguous physical memory,
 381           for architectures which are either NUMA (Non-Uniform Memory Access)
 382           or have huge holes in the physical address space for other reasons.
 383           See <file:Documentation/vm/numa> for more.
 384
 385 config ARCH_FLATMEM_ENABLE
 386         def_bool y
 387
 388 config ARCH_SPARSEMEM_ENABLE
 389         def_bool y
 390         depends on ARCH_DISCONTIGMEM_ENABLE
 391         select SPARSEMEM_VMEMMAP_ENABLE
 392
 393 config ARCH_DISCONTIGMEM_DEFAULT
 394         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 395         depends on ARCH_DISCONTIGMEM_ENABLE
 396
 397 config NUMA
 398         bool "NUMA support"
 399         depends on !IA64_HP_SIM && !FLATMEM
 400         default y if IA64_SGI_SN2
 401         select ACPI_NUMA if ACPI
 402         help
 403           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 404           Access).  This option is for configuring high-end multiprocessor
 405           server systems.  If in doubt, say N.
 406
 407 config NODES_SHIFT
 408         int "Max num nodes shift(3-10)"
 409         range 3 10
 410         default "10"
 411         depends on NEED_MULTIPLE_NODES
 412         help
 413           This option specifies the maximum number of nodes in your SSI system.
 414           MAX_NUMNODES will be 2^(This value).
 415           If in doubt, use the default.
 416
 417 config ARCH_POPULATES_NODE_MAP
 418         def_bool y
 419
 420 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 421 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 422 config VIRTUAL_MEM_MAP
 423         bool "Virtual mem map"
 424         depends on !SPARSEMEM
 425         default y if !IA64_HP_SIM
 426         help
 427           Say Y to compile the kernel with support for a virtual mem map.
 428           This code also only takes effect if a memory hole of greater than
 429           1 Gb is found during boot.  You must turn this option on if you
 430           require the DISCONTIGMEM option for your machine. If you are
 431           unsure, say Y.
 432
 433 config HOLES_IN_ZONE
 434         bool
 435         default y if VIRTUAL_MEM_MAP
 436
 437 config HAVE_ARCH_EARLY_PFN_TO_NID
 438         def_bool y
 439         depends on NEED_MULTIPLE_NODES
 440
 441 config HAVE_ARCH_NODEDATA_EXTENSION
 442         def_bool y
 443         depends on NUMA
 444
 445 config IA32_SUPPORT
 446         bool "Support for Linux/x86 binaries"
 447         help
 448           IA-64 processors can execute IA-32 (X86) instructions.  By
 449           saying Y here, the kernel will include IA-32 system call
 450           emulation support which makes it possible to transparently
 451           run IA-32 Linux binaries on an IA-64 Linux system.
 452           If in doubt, say Y.
 453
 454 config COMPAT
 455         bool
 456         depends on IA32_SUPPORT
 457         default y
 458
 459 config COMPAT_FOR_U64_ALIGNMENT
 460         def_bool COMPAT
 461
 462 config IA64_MCA_RECOVERY
 463         tristate "MCA recovery from errors other than TLB."
 464
 465 config PERFMON
 466         bool "Performance monitor support"
 467         help
 468           Selects whether support for the IA-64 performance monitor hardware
 469           is included in the kernel.  This makes some kernel data-structures a
 470           little bigger and slows down execution a bit, but it is generally
 471           a good idea to turn this on.  If you're unsure, say Y.
 472
 473 config IA64_PALINFO
 474         tristate "/proc/pal support"
 475         help
 476           If you say Y here, you are able to get PAL (Processor Abstraction
 477           Layer) information in /proc/pal.  This contains useful information
 478           about the processors in your systems, such as cache and TLB sizes
 479           and the PAL firmware version in use.
 480
 481           To use this option, you have to ensure that the "/proc file system
 482           support" (CONFIG_PROC_FS) is enabled, too.
 483
 484 config IA64_MC_ERR_INJECT
 485         tristate "MC error injection support"
 486         help
 487           Adds support for MC error injection. If enabled, the kernel
 488           will provide a sysfs interface for user applications to
 489           call MC error injection PAL procedures to inject various errors.
 490           This is a useful tool for MCA testing.
 491
 492           If you're unsure, do not select this option.
 493
 494 config SGI_SN
 495         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 496
 497 config IA64_ESI
 498         bool "ESI (Extensible SAL Interface) support"
 499         help
 500           If you say Y here, support is built into the kernel to
 501           make ESI calls.  ESI calls are used to support vendor-specific
 502           firmware extensions, such as the ability to inject memory-errors
 503           for test-purposes.  If you're unsure, say N.
 504
 505 config IA64_HP_AML_NFW
 506         bool "Support ACPI AML calls to native firmware"
 507         help
 508           This driver installs a global ACPI Operation Region handler for
 509           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 510           native firmware functions.  The driver installs the OpRegion
 511           handler if there is an HPQ5001 device or if the user supplies
 512           the "force" module parameter, e.g., with the "aml_nfw.force"
 513           kernel command line option.
 514
 515 source "drivers/sn/Kconfig"
 516
 517 config KEXEC
 518         bool "kexec system call (EXPERIMENTAL)"
 519         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 520         help
 521           kexec is a system call that implements the ability to shutdown your
 522           current kernel, and to start another kernel.  It is like a reboot
 523           but it is independent of the system firmware.   And like a reboot
 524           you can start any kernel with it, not just Linux.
 525
 526           The name comes from the similarity to the exec system call.
 527
 528           It is an ongoing process to be certain the hardware in a machine
 529           is properly shutdown, so do not be surprised if this code does not
 530           initially work for you.  It may help to enable device hotplugging
 531           support.  As of this writing the exact hardware interface is
 532           strongly in flux, so no good recommendation can be made.
 533
 534 config CRASH_DUMP
 535           bool "kernel crash dumps (EXPERIMENTAL)"
 536           depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 537           help
 538             Generate crash dump after being started by kexec.
 539
 540 source "drivers/firmware/Kconfig"
 541
 542 source "fs/Kconfig.binfmt"
 543
 544 endmenu
 545
 546 menu "Power management and ACPI"
 547
 548 source "kernel/power/Kconfig"
 549
 550 source "drivers/acpi/Kconfig"
 551
 552 if PM
 553
 554 source "arch/ia64/kernel/cpufreq/Kconfig"
 555
 556 endif
 557
 558 endmenu
 559
 560 if !IA64_HP_SIM
 561
 562 menu "Bus options (PCI, PCMCIA)"
 563
 564 config PCI
 565         bool "PCI support"
 566         help
 567           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 568           here unless you are using a simulator without PCI support.
 569
 570 config PCI_DOMAINS
 571         def_bool PCI
 572
 573 config PCI_SYSCALL
 574         def_bool PCI
 575
 576 source "drivers/pci/pcie/Kconfig"
 577
 578 source "drivers/pci/Kconfig"
 579
 580 source "drivers/pci/hotplug/Kconfig"
 581
 582 source "drivers/pcmcia/Kconfig"
 583
 584 endmenu
 585
 586 endif
 587
 588 source "net/Kconfig"
 589
 590 source "drivers/Kconfig"
 591
 592 config MSPEC
 593         tristate "Memory special operations driver"
 594         depends on IA64
 595         select IA64_UNCACHED_ALLOCATOR
 596         help
 597           If you have an ia64 and you want to enable memory special
 598           operations support (formerly known as fetchop), say Y here,
 599           otherwise say N.
 600
 601 source "fs/Kconfig"
 602
 603 source "lib/Kconfig"
 604
 605 #
 606 # Use the generic interrupt handling code in kernel/irq/:
 607 #
 608 config GENERIC_HARDIRQS
 609         bool
 610         default y
 611
 612 config GENERIC_IRQ_PROBE
 613         bool
 614         default y
 615
 616 config GENERIC_PENDING_IRQ
 617         bool
 618         depends on GENERIC_HARDIRQS && SMP
 619         default y
 620
 621 config IRQ_PER_CPU
 622         bool
 623         default y
 624
 625 config IOMMU_HELPER
 626         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC)
 627
 628 source "arch/ia64/hp/sim/Kconfig"
 629
 630 source "arch/ia64/Kconfig.debug"
 631
 632 source "security/Kconfig"
 633
 634 source "crypto/Kconfig"