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         select HAVE_DMA_ATTRS
  23         select HAVE_KVM
  24         default y
  25         help
  26           The Itanium Processor Family is Intel's 64-bit successor to
  27           the 32-bit X86 line.  The IA-64 Linux project has a home
  28           page at <http://www.linuxia64.org/> and a mailing list at
  29           <linux-ia64@vger.kernel.org>.
  30
  31 config 64BIT
  32         bool
  33         select ATA_NONSTANDARD if ATA
  34         default y
  35
  36 config ZONE_DMA
  37         def_bool y
  38         depends on !IA64_SGI_SN2
  39
  40 config QUICKLIST
  41         bool
  42         default y
  43
  44 config MMU
  45         bool
  46         default y
  47
  48 config SWIOTLB
  49        bool
  50
  51 config IOMMU_HELPER
  52        bool
  53
  54 config GENERIC_LOCKBREAK
  55         bool
  56         default y
  57         depends on SMP && PREEMPT
  58
  59 config RWSEM_XCHGADD_ALGORITHM
  60         bool
  61         default y
  62
  63 config ARCH_HAS_ILOG2_U32
  64         bool
  65         default n
  66
  67 config ARCH_HAS_ILOG2_U64
  68         bool
  69         default n
  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_SETUP_PER_CPU_AREA
  93         def_bool y
  94
  95 config DMI
  96         bool
  97         default y
  98
  99 config EFI
 100         bool
 101         default y
 102
 103 config GENERIC_IOMAP
 104         bool
 105         default y
 106
 107 config SCHED_NO_NO_OMIT_FRAME_POINTER
 108         bool
 109         default y
 110
 111 config IA64_UNCACHED_ALLOCATOR
 112         bool
 113         select GENERIC_ALLOCATOR
 114
 115 config AUDIT_ARCH
 116         bool
 117         default y
 118
 119 choice
 120         prompt "System type"
 121         default IA64_GENERIC
 122
 123 config IA64_GENERIC
 124         bool "generic"
 125         select NUMA
 126         select ACPI_NUMA
 127         select SWIOTLB
 128         help
 129           This selects the system type of your hardware.  A "generic" kernel
 130           will run on any supported IA-64 system.  However, if you configure
 131           a kernel for your specific system, it will be faster and smaller.
 132
 133           generic               For any supported IA-64 system
 134           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 135           HP-zx1/sx1000         For HP systems
 136           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 137           SGI-SN2               For SGI Altix systems
 138           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 139
 140           If you don't know what to do, choose "generic".
 141
 142 config IA64_DIG
 143         bool "DIG-compliant"
 144         select SWIOTLB
 145
 146 config IA64_HP_ZX1
 147         bool "HP-zx1/sx1000"
 148         help
 149           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 150           support for the HP I/O MMU.
 151
 152 config IA64_HP_ZX1_SWIOTLB
 153         bool "HP-zx1/sx1000 with software I/O TLB"
 154         select SWIOTLB
 155         help
 156           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 157           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 158           from support for the HP I/O MMU, this includes support for the software
 159           I/O TLB, which allows supporting the broken devices at the expense of
 160           wasting some kernel memory (about 2MB by default).
 161
 162 config IA64_SGI_SN2
 163         bool "SGI-SN2"
 164         select NUMA
 165         select ACPI_NUMA
 166         help
 167           Selecting this option will optimize the kernel for use on sn2 based
 168           systems, but the resulting kernel binary will not run on other
 169           types of ia64 systems.  If you have an SGI Altix system, it's safe
 170           to select this option.  If in doubt, select ia64 generic support
 171           instead.
 172
 173 config IA64_HP_SIM
 174         bool "Ski-simulator"
 175         select SWIOTLB
 176
 177 endchoice
 178
 179 choice
 180         prompt "Processor type"
 181         default ITANIUM
 182
 183 config ITANIUM
 184         bool "Itanium"
 185         help
 186           Select your IA-64 processor type.  The default is Itanium.
 187           This choice is safe for all IA-64 systems, but may not perform
 188           optimally on systems with, say, Itanium 2 or newer processors.
 189
 190 config MCKINLEY
 191         bool "Itanium 2"
 192         help
 193           Select this to configure for an Itanium 2 (McKinley) processor.
 194
 195 endchoice
 196
 197 choice
 198         prompt "Kernel page size"
 199         default IA64_PAGE_SIZE_16KB
 200
 201 config IA64_PAGE_SIZE_4KB
 202         bool "4KB"
 203         help
 204           This lets you select the page size of the kernel.  For best IA-64
 205           performance, a page size of 8KB or 16KB is recommended.  For best
 206           IA-32 compatibility, a page size of 4KB should be selected (the vast
 207           majority of IA-32 binaries work perfectly fine with a larger page
 208           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 209           be selected.
 210
 211           4KB                For best IA-32 compatibility
 212           8KB                For best IA-64 performance
 213           16KB               For best IA-64 performance
 214           64KB               Requires Itanium 2 or newer processor.
 215
 216           If you don't know what to do, choose 16KB.
 217
 218 config IA64_PAGE_SIZE_8KB
 219         bool "8KB"
 220
 221 config IA64_PAGE_SIZE_16KB
 222         bool "16KB"
 223
 224 config IA64_PAGE_SIZE_64KB
 225         depends on !ITANIUM
 226         bool "64KB"
 227
 228 endchoice
 229
 230 choice
 231         prompt "Page Table Levels"
 232         default PGTABLE_3
 233
 234 config PGTABLE_3
 235         bool "3 Levels"
 236
 237 config PGTABLE_4
 238         depends on !IA64_PAGE_SIZE_64KB
 239         bool "4 Levels"
 240
 241 endchoice
 242
 243 if IA64_HP_SIM
 244 config HZ
 245         default 32
 246 endif
 247
 248 if !IA64_HP_SIM
 249 source kernel/Kconfig.hz
 250 endif
 251
 252 config IA64_BRL_EMU
 253         bool
 254         depends on ITANIUM
 255         default y
 256
 257 # align cache-sensitive data to 128 bytes
 258 config IA64_L1_CACHE_SHIFT
 259         int
 260         default "7" if MCKINLEY
 261         default "6" if ITANIUM
 262
 263 config IA64_CYCLONE
 264         bool "Cyclone (EXA) Time Source support"
 265         help
 266           Say Y here to enable support for IBM EXA Cyclone time source.
 267           If you're unsure, answer N.
 268
 269 config IOSAPIC
 270         bool
 271         depends on !IA64_HP_SIM
 272         default y
 273
 274 config FORCE_MAX_ZONEORDER
 275         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 276         range 11 17  if !HUGETLB_PAGE
 277         default "17" if HUGETLB_PAGE
 278         default "11"
 279
 280 config VIRT_CPU_ACCOUNTING
 281         bool "Deterministic task and CPU time accounting"
 282         default n
 283         help
 284           Select this option to enable more accurate task and CPU time
 285           accounting.  This is done by reading a CPU counter on each
 286           kernel entry and exit and on transitions within the kernel
 287           between system, softirq and hardirq state, so there is a
 288           small performance impact.
 289           If in doubt, say N here.
 290
 291 config SMP
 292         bool "Symmetric multi-processing support"
 293         help
 294           This enables support for systems with more than one CPU. If you have
 295           a system with only one CPU, say N.  If you have a system with more
 296           than one CPU, say Y.
 297
 298           If you say N here, the kernel will run on single and multiprocessor
 299           systems, but will use only one CPU of a multiprocessor system.  If
 300           you say Y here, the kernel will run on many, but not all,
 301           single processor systems.  On a single processor system, the kernel
 302           will run faster if you say N here.
 303
 304           See also the SMP-HOWTO available at
 305           <http://www.tldp.org/docs.html#howto>.
 306
 307           If you don't know what to do here, say N.
 308
 309 config NR_CPUS
 310         int "Maximum number of CPUs (2-1024)"
 311         range 2 1024
 312         depends on SMP
 313         default "1024"
 314         help
 315           You should set this to the number of CPUs in your system, but
 316           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 317           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 318           than 64 will cause the use of a CPU mask array, causing a small
 319           performance hit.
 320
 321 config HOTPLUG_CPU
 322         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 323         depends on SMP && EXPERIMENTAL
 324         select HOTPLUG
 325         default n
 326         ---help---
 327           Say Y here to experiment with turning CPUs off and on.  CPUs
 328           can be controlled through /sys/devices/system/cpu/cpu#.
 329           Say N if you want to disable CPU hotplug.
 330
 331 config ARCH_ENABLE_MEMORY_HOTPLUG
 332         def_bool y
 333
 334 config ARCH_ENABLE_MEMORY_HOTREMOVE
 335         def_bool y
 336
 337 config SCHED_SMT
 338         bool "SMT scheduler support"
 339         depends on SMP
 340         help
 341           Improves the CPU scheduler's decision making when dealing with
 342           Intel IA64 chips with MultiThreading at a cost of slightly increased
 343           overhead in some places. If unsure say N here.
 344
 345 config PERMIT_BSP_REMOVE
 346         bool "Support removal of Bootstrap Processor"
 347         depends on HOTPLUG_CPU
 348         default n
 349         ---help---
 350         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 351         support.
 352
 353 config FORCE_CPEI_RETARGET
 354         bool "Force assumption that CPEI can be re-targetted"
 355         depends on PERMIT_BSP_REMOVE
 356         default n
 357         ---help---
 358         Say Y if you need to force the assumption that CPEI can be re-targetted to
 359         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 360         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 361         This option it useful to enable this feature on older BIOS's as well.
 362         You can also enable this by using boot command line option force_cpei=1.
 363
 364 source "kernel/Kconfig.preempt"
 365
 366 source "mm/Kconfig"
 367
 368 config ARCH_SELECT_MEMORY_MODEL
 369         def_bool y
 370
 371 config ARCH_DISCONTIGMEM_ENABLE
 372         def_bool y
 373         help
 374           Say Y to support efficient handling of discontiguous physical memory,
 375           for architectures which are either NUMA (Non-Uniform Memory Access)
 376           or have huge holes in the physical address space for other reasons.
 377           See <file:Documentation/vm/numa> for more.
 378
 379 config ARCH_FLATMEM_ENABLE
 380         def_bool y
 381
 382 config ARCH_SPARSEMEM_ENABLE
 383         def_bool y
 384         depends on ARCH_DISCONTIGMEM_ENABLE
 385         select SPARSEMEM_VMEMMAP_ENABLE
 386
 387 config ARCH_DISCONTIGMEM_DEFAULT
 388         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 389         depends on ARCH_DISCONTIGMEM_ENABLE
 390
 391 config NUMA
 392         bool "NUMA support"
 393         depends on !IA64_HP_SIM && !FLATMEM
 394         default y if IA64_SGI_SN2
 395         select ACPI_NUMA if ACPI
 396         help
 397           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 398           Access).  This option is for configuring high-end multiprocessor
 399           server systems.  If in doubt, say N.
 400
 401 config NODES_SHIFT
 402         int "Max num nodes shift(3-10)"
 403         range 3 10
 404         default "10"
 405         depends on NEED_MULTIPLE_NODES
 406         help
 407           This option specifies the maximum number of nodes in your SSI system.
 408           MAX_NUMNODES will be 2^(This value).
 409           If in doubt, use the default.
 410
 411 config ARCH_POPULATES_NODE_MAP
 412         def_bool y
 413
 414 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 415 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 416 config VIRTUAL_MEM_MAP
 417         bool "Virtual mem map"
 418         depends on !SPARSEMEM
 419         default y if !IA64_HP_SIM
 420         help
 421           Say Y to compile the kernel with support for a virtual mem map.
 422           This code also only takes effect if a memory hole of greater than
 423           1 Gb is found during boot.  You must turn this option on if you
 424           require the DISCONTIGMEM option for your machine. If you are
 425           unsure, say Y.
 426
 427 config HOLES_IN_ZONE
 428         bool
 429         default y if VIRTUAL_MEM_MAP
 430
 431 config HAVE_ARCH_EARLY_PFN_TO_NID
 432         def_bool y
 433         depends on NEED_MULTIPLE_NODES
 434
 435 config HAVE_ARCH_NODEDATA_EXTENSION
 436         def_bool y
 437         depends on NUMA
 438
 439 config IA32_SUPPORT
 440         bool "Support for Linux/x86 binaries"
 441         help
 442           IA-64 processors can execute IA-32 (X86) instructions.  By
 443           saying Y here, the kernel will include IA-32 system call
 444           emulation support which makes it possible to transparently
 445           run IA-32 Linux binaries on an IA-64 Linux system.
 446           If in doubt, say Y.
 447
 448 config COMPAT
 449         bool
 450         depends on IA32_SUPPORT
 451         default y
 452
 453 config COMPAT_FOR_U64_ALIGNMENT
 454         def_bool COMPAT
 455
 456 config IA64_MCA_RECOVERY
 457         tristate "MCA recovery from errors other than TLB."
 458
 459 config PERFMON
 460         bool "Performance monitor support"
 461         help
 462           Selects whether support for the IA-64 performance monitor hardware
 463           is included in the kernel.  This makes some kernel data-structures a
 464           little bigger and slows down execution a bit, but it is generally
 465           a good idea to turn this on.  If you're unsure, say Y.
 466
 467 config IA64_PALINFO
 468         tristate "/proc/pal support"
 469         help
 470           If you say Y here, you are able to get PAL (Processor Abstraction
 471           Layer) information in /proc/pal.  This contains useful information
 472           about the processors in your systems, such as cache and TLB sizes
 473           and the PAL firmware version in use.
 474
 475           To use this option, you have to ensure that the "/proc file system
 476           support" (CONFIG_PROC_FS) is enabled, too.
 477
 478 config IA64_MC_ERR_INJECT
 479         tristate "MC error injection support"
 480         help
 481           Adds support for MC error injection. If enabled, the kernel
 482           will provide a sysfs interface for user applications to
 483           call MC error injection PAL procedures to inject various errors.
 484           This is a useful tool for MCA testing.
 485
 486           If you're unsure, do not select this option.
 487
 488 config SGI_SN
 489         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 490
 491 config IA64_ESI
 492         bool "ESI (Extensible SAL Interface) support"
 493         help
 494           If you say Y here, support is built into the kernel to
 495           make ESI calls.  ESI calls are used to support vendor-specific
 496           firmware extensions, such as the ability to inject memory-errors
 497           for test-purposes.  If you're unsure, say N.
 498
 499 config IA64_HP_AML_NFW
 500         bool "Support ACPI AML calls to native firmware"
 501         help
 502           This driver installs a global ACPI Operation Region handler for
 503           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 504           native firmware functions.  The driver installs the OpRegion
 505           handler if there is an HPQ5001 device or if the user supplies
 506           the "force" module parameter, e.g., with the "aml_nfw.force"
 507           kernel command line option.
 508
 509 source "drivers/sn/Kconfig"
 510
 511 config KEXEC
 512         bool "kexec system call (EXPERIMENTAL)"
 513         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 514         help
 515           kexec is a system call that implements the ability to shutdown your
 516           current kernel, and to start another kernel.  It is like a reboot
 517           but it is independent of the system firmware.   And like a reboot
 518           you can start any kernel with it, not just Linux.
 519
 520           The name comes from the similarity to the exec system call.
 521
 522           It is an ongoing process to be certain the hardware in a machine
 523           is properly shutdown, so do not be surprised if this code does not
 524           initially work for you.  It may help to enable device hotplugging
 525           support.  As of this writing the exact hardware interface is
 526           strongly in flux, so no good recommendation can be made.
 527
 528 config CRASH_DUMP
 529           bool "kernel crash dumps (EXPERIMENTAL)"
 530           depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 531           help
 532             Generate crash dump after being started by kexec.
 533
 534 source "drivers/firmware/Kconfig"
 535
 536 source "fs/Kconfig.binfmt"
 537
 538 endmenu
 539
 540 menu "Power management and ACPI"
 541
 542 source "kernel/power/Kconfig"
 543
 544 source "drivers/acpi/Kconfig"
 545
 546 if PM
 547
 548 source "arch/ia64/kernel/cpufreq/Kconfig"
 549
 550 endif
 551
 552 endmenu
 553
 554 if !IA64_HP_SIM
 555
 556 menu "Bus options (PCI, PCMCIA)"
 557
 558 config PCI
 559         bool "PCI support"
 560         help
 561           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 562           here unless you are using a simulator without PCI support.
 563
 564 config PCI_DOMAINS
 565         def_bool PCI
 566
 567 config PCI_SYSCALL
 568         def_bool PCI
 569
 570 source "drivers/pci/pcie/Kconfig"
 571
 572 source "drivers/pci/Kconfig"
 573
 574 source "drivers/pci/hotplug/Kconfig"
 575
 576 source "drivers/pcmcia/Kconfig"
 577
 578 endmenu
 579
 580 endif
 581
 582 source "net/Kconfig"
 583
 584 source "drivers/Kconfig"
 585
 586 config MSPEC
 587         tristate "Memory special operations driver"
 588         depends on IA64
 589         select IA64_UNCACHED_ALLOCATOR
 590         help
 591           If you have an ia64 and you want to enable memory special
 592           operations support (formerly known as fetchop), say Y here,
 593           otherwise say N.
 594
 595 source "fs/Kconfig"
 596
 597 source "arch/ia64/kvm/Kconfig"
 598
 599 source "lib/Kconfig"
 600
 601 #
 602 # Use the generic interrupt handling code in kernel/irq/:
 603 #
 604 config GENERIC_HARDIRQS
 605         bool
 606         default y
 607
 608 config GENERIC_IRQ_PROBE
 609         bool
 610         default y
 611
 612 config GENERIC_PENDING_IRQ
 613         bool
 614         depends on GENERIC_HARDIRQS && SMP
 615         default y
 616
 617 config IRQ_PER_CPU
 618         bool
 619         default y
 620
 621 config IOMMU_HELPER
 622         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
 623
 624 source "arch/ia64/hp/sim/Kconfig"
 625
 626 source "arch/ia64/Kconfig.debug"
 627
 628 source "security/Kconfig"
 629
 630 source "crypto/Kconfig"