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           SGI-UV                For SGI UV systems
 139           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 140
 141           If you don't know what to do, choose "generic".
 142
 143 config IA64_DIG
 144         bool "DIG-compliant"
 145         select SWIOTLB
 146
 147 config IA64_HP_ZX1
 148         bool "HP-zx1/sx1000"
 149         help
 150           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 151           support for the HP I/O MMU.
 152
 153 config IA64_HP_ZX1_SWIOTLB
 154         bool "HP-zx1/sx1000 with software I/O TLB"
 155         select SWIOTLB
 156         help
 157           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 158           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 159           from support for the HP I/O MMU, this includes support for the software
 160           I/O TLB, which allows supporting the broken devices at the expense of
 161           wasting some kernel memory (about 2MB by default).
 162
 163 config IA64_SGI_SN2
 164         bool "SGI-SN2"
 165         select NUMA
 166         select ACPI_NUMA
 167         help
 168           Selecting this option will optimize the kernel for use on sn2 based
 169           systems, but the resulting kernel binary will not run on other
 170           types of ia64 systems.  If you have an SGI Altix system, it's safe
 171           to select this option.  If in doubt, select ia64 generic support
 172           instead.
 173
 174 config IA64_SGI_UV`
 175         bool "SGI-UV`"
 176         select NUMA
 177         select ACPI_NUMA
 178         select SWIOTLB
 179         help
 180           Selecting this option will optimize the kernel for use on UV based
 181           systems, but the resulting kernel binary will not run on other
 182           types of ia64 systems.  If you have an SGI UV system, it's safe
 183           to select this option.  If in doubt, select ia64 generic support
 184           instead.
 185
 186 config IA64_HP_SIM
 187         bool "Ski-simulator"
 188         select SWIOTLB
 189
 190 endchoice
 191
 192 choice
 193         prompt "Processor type"
 194         default ITANIUM
 195
 196 config ITANIUM
 197         bool "Itanium"
 198         help
 199           Select your IA-64 processor type.  The default is Itanium.
 200           This choice is safe for all IA-64 systems, but may not perform
 201           optimally on systems with, say, Itanium 2 or newer processors.
 202
 203 config MCKINLEY
 204         bool "Itanium 2"
 205         help
 206           Select this to configure for an Itanium 2 (McKinley) processor.
 207
 208 endchoice
 209
 210 choice
 211         prompt "Kernel page size"
 212         default IA64_PAGE_SIZE_16KB
 213
 214 config IA64_PAGE_SIZE_4KB
 215         bool "4KB"
 216         help
 217           This lets you select the page size of the kernel.  For best IA-64
 218           performance, a page size of 8KB or 16KB is recommended.  For best
 219           IA-32 compatibility, a page size of 4KB should be selected (the vast
 220           majority of IA-32 binaries work perfectly fine with a larger page
 221           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 222           be selected.
 223
 224           4KB                For best IA-32 compatibility
 225           8KB                For best IA-64 performance
 226           16KB               For best IA-64 performance
 227           64KB               Requires Itanium 2 or newer processor.
 228
 229           If you don't know what to do, choose 16KB.
 230
 231 config IA64_PAGE_SIZE_8KB
 232         bool "8KB"
 233
 234 config IA64_PAGE_SIZE_16KB
 235         bool "16KB"
 236
 237 config IA64_PAGE_SIZE_64KB
 238         depends on !ITANIUM
 239         bool "64KB"
 240
 241 endchoice
 242
 243 choice
 244         prompt "Page Table Levels"
 245         default PGTABLE_3
 246
 247 config PGTABLE_3
 248         bool "3 Levels"
 249
 250 config PGTABLE_4
 251         depends on !IA64_PAGE_SIZE_64KB
 252         bool "4 Levels"
 253
 254 endchoice
 255
 256 if IA64_HP_SIM
 257 config HZ
 258         default 32
 259 endif
 260
 261 if !IA64_HP_SIM
 262 source kernel/Kconfig.hz
 263 endif
 264
 265 config IA64_BRL_EMU
 266         bool
 267         depends on ITANIUM
 268         default y
 269
 270 # align cache-sensitive data to 128 bytes
 271 config IA64_L1_CACHE_SHIFT
 272         int
 273         default "7" if MCKINLEY
 274         default "6" if ITANIUM
 275
 276 config IA64_CYCLONE
 277         bool "Cyclone (EXA) Time Source support"
 278         help
 279           Say Y here to enable support for IBM EXA Cyclone time source.
 280           If you're unsure, answer N.
 281
 282 config IOSAPIC
 283         bool
 284         depends on !IA64_HP_SIM
 285         default y
 286
 287 config FORCE_MAX_ZONEORDER
 288         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 289         range 11 17  if !HUGETLB_PAGE
 290         default "17" if HUGETLB_PAGE
 291         default "11"
 292
 293 config VIRT_CPU_ACCOUNTING
 294         bool "Deterministic task and CPU time accounting"
 295         default n
 296         help
 297           Select this option to enable more accurate task and CPU time
 298           accounting.  This is done by reading a CPU counter on each
 299           kernel entry and exit and on transitions within the kernel
 300           between system, softirq and hardirq state, so there is a
 301           small performance impact.
 302           If in doubt, say N here.
 303
 304 config SMP
 305         bool "Symmetric multi-processing support"
 306         select USE_GENERIC_SMP_HELPERS
 307         help
 308           This enables support for systems with more than one CPU. If you have
 309           a system with only one CPU, say N.  If you have a system with more
 310           than one CPU, say Y.
 311
 312           If you say N here, the kernel will run on single and multiprocessor
 313           systems, but will use only one CPU of a multiprocessor system.  If
 314           you say Y here, the kernel will run on many, but not all,
 315           single processor systems.  On a single processor system, the kernel
 316           will run faster if you say N here.
 317
 318           See also the SMP-HOWTO available at
 319           <http://www.tldp.org/docs.html#howto>.
 320
 321           If you don't know what to do here, say N.
 322
 323 config NR_CPUS
 324         int "Maximum number of CPUs (2-1024)"
 325         range 2 1024
 326         depends on SMP
 327         default "1024"
 328         help
 329           You should set this to the number of CPUs in your system, but
 330           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 331           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 332           than 64 will cause the use of a CPU mask array, causing a small
 333           performance hit.
 334
 335 config HOTPLUG_CPU
 336         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 337         depends on SMP && EXPERIMENTAL
 338         select HOTPLUG
 339         default n
 340         ---help---
 341           Say Y here to experiment with turning CPUs off and on.  CPUs
 342           can be controlled through /sys/devices/system/cpu/cpu#.
 343           Say N if you want to disable CPU hotplug.
 344
 345 config ARCH_ENABLE_MEMORY_HOTPLUG
 346         def_bool y
 347
 348 config ARCH_ENABLE_MEMORY_HOTREMOVE
 349         def_bool y
 350
 351 config SCHED_SMT
 352         bool "SMT scheduler support"
 353         depends on SMP
 354         help
 355           Improves the CPU scheduler's decision making when dealing with
 356           Intel IA64 chips with MultiThreading at a cost of slightly increased
 357           overhead in some places. If unsure say N here.
 358
 359 config PERMIT_BSP_REMOVE
 360         bool "Support removal of Bootstrap Processor"
 361         depends on HOTPLUG_CPU
 362         default n
 363         ---help---
 364         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 365         support.
 366
 367 config FORCE_CPEI_RETARGET
 368         bool "Force assumption that CPEI can be re-targetted"
 369         depends on PERMIT_BSP_REMOVE
 370         default n
 371         ---help---
 372         Say Y if you need to force the assumption that CPEI can be re-targetted to
 373         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 374         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 375         This option it useful to enable this feature on older BIOS's as well.
 376         You can also enable this by using boot command line option force_cpei=1.
 377
 378 source "kernel/Kconfig.preempt"
 379
 380 source "mm/Kconfig"
 381
 382 config ARCH_SELECT_MEMORY_MODEL
 383         def_bool y
 384
 385 config ARCH_DISCONTIGMEM_ENABLE
 386         def_bool y
 387         help
 388           Say Y to support efficient handling of discontiguous physical memory,
 389           for architectures which are either NUMA (Non-Uniform Memory Access)
 390           or have huge holes in the physical address space for other reasons.
 391           See <file:Documentation/vm/numa> for more.
 392
 393 config ARCH_FLATMEM_ENABLE
 394         def_bool y
 395
 396 config ARCH_SPARSEMEM_ENABLE
 397         def_bool y
 398         depends on ARCH_DISCONTIGMEM_ENABLE
 399         select SPARSEMEM_VMEMMAP_ENABLE
 400
 401 config ARCH_DISCONTIGMEM_DEFAULT
 402         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 403         depends on ARCH_DISCONTIGMEM_ENABLE
 404
 405 config NUMA
 406         bool "NUMA support"
 407         depends on !IA64_HP_SIM && !FLATMEM
 408         default y if IA64_SGI_SN2
 409         select ACPI_NUMA if ACPI
 410         help
 411           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 412           Access).  This option is for configuring high-end multiprocessor
 413           server systems.  If in doubt, say N.
 414
 415 config NODES_SHIFT
 416         int "Max num nodes shift(3-10)"
 417         range 3 10
 418         default "10"
 419         depends on NEED_MULTIPLE_NODES
 420         help
 421           This option specifies the maximum number of nodes in your SSI system.
 422           MAX_NUMNODES will be 2^(This value).
 423           If in doubt, use the default.
 424
 425 config ARCH_POPULATES_NODE_MAP
 426         def_bool y
 427
 428 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 429 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 430 config VIRTUAL_MEM_MAP
 431         bool "Virtual mem map"
 432         depends on !SPARSEMEM
 433         default y if !IA64_HP_SIM
 434         help
 435           Say Y to compile the kernel with support for a virtual mem map.
 436           This code also only takes effect if a memory hole of greater than
 437           1 Gb is found during boot.  You must turn this option on if you
 438           require the DISCONTIGMEM option for your machine. If you are
 439           unsure, say Y.
 440
 441 config HOLES_IN_ZONE
 442         bool
 443         default y if VIRTUAL_MEM_MAP
 444
 445 config HAVE_ARCH_EARLY_PFN_TO_NID
 446         def_bool y
 447         depends on NEED_MULTIPLE_NODES
 448
 449 config HAVE_ARCH_NODEDATA_EXTENSION
 450         def_bool y
 451         depends on NUMA
 452
 453 config IA32_SUPPORT
 454         bool "Support for Linux/x86 binaries"
 455         help
 456           IA-64 processors can execute IA-32 (X86) instructions.  By
 457           saying Y here, the kernel will include IA-32 system call
 458           emulation support which makes it possible to transparently
 459           run IA-32 Linux binaries on an IA-64 Linux system.
 460           If in doubt, say Y.
 461
 462 config COMPAT
 463         bool
 464         depends on IA32_SUPPORT
 465         default y
 466
 467 config COMPAT_FOR_U64_ALIGNMENT
 468         def_bool COMPAT
 469
 470 config IA64_MCA_RECOVERY
 471         tristate "MCA recovery from errors other than TLB."
 472
 473 config PERFMON
 474         bool "Performance monitor support"
 475         help
 476           Selects whether support for the IA-64 performance monitor hardware
 477           is included in the kernel.  This makes some kernel data-structures a
 478           little bigger and slows down execution a bit, but it is generally
 479           a good idea to turn this on.  If you're unsure, say Y.
 480
 481 config IA64_PALINFO
 482         tristate "/proc/pal support"
 483         help
 484           If you say Y here, you are able to get PAL (Processor Abstraction
 485           Layer) information in /proc/pal.  This contains useful information
 486           about the processors in your systems, such as cache and TLB sizes
 487           and the PAL firmware version in use.
 488
 489           To use this option, you have to ensure that the "/proc file system
 490           support" (CONFIG_PROC_FS) is enabled, too.
 491
 492 config IA64_MC_ERR_INJECT
 493         tristate "MC error injection support"
 494         help
 495           Adds support for MC error injection. If enabled, the kernel
 496           will provide a sysfs interface for user applications to
 497           call MC error injection PAL procedures to inject various errors.
 498           This is a useful tool for MCA testing.
 499
 500           If you're unsure, do not select this option.
 501
 502 config SGI_SN
 503         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 504
 505 config IA64_ESI
 506         bool "ESI (Extensible SAL Interface) support"
 507         help
 508           If you say Y here, support is built into the kernel to
 509           make ESI calls.  ESI calls are used to support vendor-specific
 510           firmware extensions, such as the ability to inject memory-errors
 511           for test-purposes.  If you're unsure, say N.
 512
 513 config IA64_HP_AML_NFW
 514         bool "Support ACPI AML calls to native firmware"
 515         help
 516           This driver installs a global ACPI Operation Region handler for
 517           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 518           native firmware functions.  The driver installs the OpRegion
 519           handler if there is an HPQ5001 device or if the user supplies
 520           the "force" module parameter, e.g., with the "aml_nfw.force"
 521           kernel command line option.
 522
 523 source "drivers/sn/Kconfig"
 524
 525 config KEXEC
 526         bool "kexec system call (EXPERIMENTAL)"
 527         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 528         help
 529           kexec is a system call that implements the ability to shutdown your
 530           current kernel, and to start another kernel.  It is like a reboot
 531           but it is independent of the system firmware.   And like a reboot
 532           you can start any kernel with it, not just Linux.
 533
 534           The name comes from the similarity to the exec system call.
 535
 536           It is an ongoing process to be certain the hardware in a machine
 537           is properly shutdown, so do not be surprised if this code does not
 538           initially work for you.  It may help to enable device hotplugging
 539           support.  As of this writing the exact hardware interface is
 540           strongly in flux, so no good recommendation can be made.
 541
 542 config CRASH_DUMP
 543           bool "kernel crash dumps"
 544           depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 545           help
 546             Generate crash dump after being started by kexec.
 547
 548 source "drivers/firmware/Kconfig"
 549
 550 source "fs/Kconfig.binfmt"
 551
 552 endmenu
 553
 554 menu "Power management and ACPI"
 555
 556 source "kernel/power/Kconfig"
 557
 558 source "drivers/acpi/Kconfig"
 559
 560 if PM
 561
 562 source "arch/ia64/kernel/cpufreq/Kconfig"
 563
 564 endif
 565
 566 endmenu
 567
 568 if !IA64_HP_SIM
 569
 570 menu "Bus options (PCI, PCMCIA)"
 571
 572 config PCI
 573         bool "PCI support"
 574         help
 575           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 576           here unless you are using a simulator without PCI support.
 577
 578 config PCI_DOMAINS
 579         def_bool PCI
 580
 581 config PCI_SYSCALL
 582         def_bool PCI
 583
 584 source "drivers/pci/pcie/Kconfig"
 585
 586 source "drivers/pci/Kconfig"
 587
 588 source "drivers/pci/hotplug/Kconfig"
 589
 590 source "drivers/pcmcia/Kconfig"
 591
 592 endmenu
 593
 594 endif
 595
 596 source "net/Kconfig"
 597
 598 source "drivers/Kconfig"
 599
 600 config MSPEC
 601         tristate "Memory special operations driver"
 602         depends on IA64
 603         select IA64_UNCACHED_ALLOCATOR
 604         help
 605           If you have an ia64 and you want to enable memory special
 606           operations support (formerly known as fetchop), say Y here,
 607           otherwise say N.
 608
 609 source "fs/Kconfig"
 610
 611 source "arch/ia64/kvm/Kconfig"
 612
 613 source "lib/Kconfig"
 614
 615 #
 616 # Use the generic interrupt handling code in kernel/irq/:
 617 #
 618 config GENERIC_HARDIRQS
 619         bool
 620         default y
 621
 622 config GENERIC_IRQ_PROBE
 623         bool
 624         default y
 625
 626 config GENERIC_PENDING_IRQ
 627         bool
 628         depends on GENERIC_HARDIRQS && SMP
 629         default y
 630
 631 config IRQ_PER_CPU
 632         bool
 633         default y
 634
 635 config IOMMU_HELPER
 636         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
 637
 638 source "arch/ia64/hp/sim/Kconfig"
 639
 640 source "arch/ia64/Kconfig.debug"
 641
 642 source "security/Kconfig"
 643
 644 source "crypto/Kconfig"