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         help
 307           This enables support for systems with more than one CPU. If you have
 308           a system with only one CPU, say N.  If you have a system with more
 309           than one CPU, say Y.
 310
 311           If you say N here, the kernel will run on single and multiprocessor
 312           systems, but will use only one CPU of a multiprocessor system.  If
 313           you say Y here, the kernel will run on many, but not all,
 314           single processor systems.  On a single processor system, the kernel
 315           will run faster if you say N here.
 316
 317           See also the SMP-HOWTO available at
 318           <http://www.tldp.org/docs.html#howto>.
 319
 320           If you don't know what to do here, say N.
 321
 322 config NR_CPUS
 323         int "Maximum number of CPUs (2-1024)"
 324         range 2 1024
 325         depends on SMP
 326         default "1024"
 327         help
 328           You should set this to the number of CPUs in your system, but
 329           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 330           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 331           than 64 will cause the use of a CPU mask array, causing a small
 332           performance hit.
 333
 334 config HOTPLUG_CPU
 335         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 336         depends on SMP && EXPERIMENTAL
 337         select HOTPLUG
 338         default n
 339         ---help---
 340           Say Y here to experiment with turning CPUs off and on.  CPUs
 341           can be controlled through /sys/devices/system/cpu/cpu#.
 342           Say N if you want to disable CPU hotplug.
 343
 344 config ARCH_ENABLE_MEMORY_HOTPLUG
 345         def_bool y
 346
 347 config ARCH_ENABLE_MEMORY_HOTREMOVE
 348         def_bool y
 349
 350 config SCHED_SMT
 351         bool "SMT scheduler support"
 352         depends on SMP
 353         help
 354           Improves the CPU scheduler's decision making when dealing with
 355           Intel IA64 chips with MultiThreading at a cost of slightly increased
 356           overhead in some places. If unsure say N here.
 357
 358 config PERMIT_BSP_REMOVE
 359         bool "Support removal of Bootstrap Processor"
 360         depends on HOTPLUG_CPU
 361         default n
 362         ---help---
 363         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 364         support.
 365
 366 config FORCE_CPEI_RETARGET
 367         bool "Force assumption that CPEI can be re-targetted"
 368         depends on PERMIT_BSP_REMOVE
 369         default n
 370         ---help---
 371         Say Y if you need to force the assumption that CPEI can be re-targetted to
 372         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 373         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 374         This option it useful to enable this feature on older BIOS's as well.
 375         You can also enable this by using boot command line option force_cpei=1.
 376
 377 source "kernel/Kconfig.preempt"
 378
 379 source "mm/Kconfig"
 380
 381 config ARCH_SELECT_MEMORY_MODEL
 382         def_bool y
 383
 384 config ARCH_DISCONTIGMEM_ENABLE
 385         def_bool y
 386         help
 387           Say Y to support efficient handling of discontiguous physical memory,
 388           for architectures which are either NUMA (Non-Uniform Memory Access)
 389           or have huge holes in the physical address space for other reasons.
 390           See <file:Documentation/vm/numa> for more.
 391
 392 config ARCH_FLATMEM_ENABLE
 393         def_bool y
 394
 395 config ARCH_SPARSEMEM_ENABLE
 396         def_bool y
 397         depends on ARCH_DISCONTIGMEM_ENABLE
 398         select SPARSEMEM_VMEMMAP_ENABLE
 399
 400 config ARCH_DISCONTIGMEM_DEFAULT
 401         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 402         depends on ARCH_DISCONTIGMEM_ENABLE
 403
 404 config NUMA
 405         bool "NUMA support"
 406         depends on !IA64_HP_SIM && !FLATMEM
 407         default y if IA64_SGI_SN2
 408         select ACPI_NUMA if ACPI
 409         help
 410           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 411           Access).  This option is for configuring high-end multiprocessor
 412           server systems.  If in doubt, say N.
 413
 414 config NODES_SHIFT
 415         int "Max num nodes shift(3-10)"
 416         range 3 10
 417         default "10"
 418         depends on NEED_MULTIPLE_NODES
 419         help
 420           This option specifies the maximum number of nodes in your SSI system.
 421           MAX_NUMNODES will be 2^(This value).
 422           If in doubt, use the default.
 423
 424 config ARCH_POPULATES_NODE_MAP
 425         def_bool y
 426
 427 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 428 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 429 config VIRTUAL_MEM_MAP
 430         bool "Virtual mem map"
 431         depends on !SPARSEMEM
 432         default y if !IA64_HP_SIM
 433         help
 434           Say Y to compile the kernel with support for a virtual mem map.
 435           This code also only takes effect if a memory hole of greater than
 436           1 Gb is found during boot.  You must turn this option on if you
 437           require the DISCONTIGMEM option for your machine. If you are
 438           unsure, say Y.
 439
 440 config HOLES_IN_ZONE
 441         bool
 442         default y if VIRTUAL_MEM_MAP
 443
 444 config HAVE_ARCH_EARLY_PFN_TO_NID
 445         def_bool y
 446         depends on NEED_MULTIPLE_NODES
 447
 448 config HAVE_ARCH_NODEDATA_EXTENSION
 449         def_bool y
 450         depends on NUMA
 451
 452 config IA32_SUPPORT
 453         bool "Support for Linux/x86 binaries"
 454         help
 455           IA-64 processors can execute IA-32 (X86) instructions.  By
 456           saying Y here, the kernel will include IA-32 system call
 457           emulation support which makes it possible to transparently
 458           run IA-32 Linux binaries on an IA-64 Linux system.
 459           If in doubt, say Y.
 460
 461 config COMPAT
 462         bool
 463         depends on IA32_SUPPORT
 464         default y
 465
 466 config COMPAT_FOR_U64_ALIGNMENT
 467         def_bool COMPAT
 468
 469 config IA64_MCA_RECOVERY
 470         tristate "MCA recovery from errors other than TLB."
 471
 472 config PERFMON
 473         bool "Performance monitor support"
 474         help
 475           Selects whether support for the IA-64 performance monitor hardware
 476           is included in the kernel.  This makes some kernel data-structures a
 477           little bigger and slows down execution a bit, but it is generally
 478           a good idea to turn this on.  If you're unsure, say Y.
 479
 480 config IA64_PALINFO
 481         tristate "/proc/pal support"
 482         help
 483           If you say Y here, you are able to get PAL (Processor Abstraction
 484           Layer) information in /proc/pal.  This contains useful information
 485           about the processors in your systems, such as cache and TLB sizes
 486           and the PAL firmware version in use.
 487
 488           To use this option, you have to ensure that the "/proc file system
 489           support" (CONFIG_PROC_FS) is enabled, too.
 490
 491 config IA64_MC_ERR_INJECT
 492         tristate "MC error injection support"
 493         help
 494           Adds support for MC error injection. If enabled, the kernel
 495           will provide a sysfs interface for user applications to
 496           call MC error injection PAL procedures to inject various errors.
 497           This is a useful tool for MCA testing.
 498
 499           If you're unsure, do not select this option.
 500
 501 config SGI_SN
 502         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 503
 504 config IA64_ESI
 505         bool "ESI (Extensible SAL Interface) support"
 506         help
 507           If you say Y here, support is built into the kernel to
 508           make ESI calls.  ESI calls are used to support vendor-specific
 509           firmware extensions, such as the ability to inject memory-errors
 510           for test-purposes.  If you're unsure, say N.
 511
 512 config IA64_HP_AML_NFW
 513         bool "Support ACPI AML calls to native firmware"
 514         help
 515           This driver installs a global ACPI Operation Region handler for
 516           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 517           native firmware functions.  The driver installs the OpRegion
 518           handler if there is an HPQ5001 device or if the user supplies
 519           the "force" module parameter, e.g., with the "aml_nfw.force"
 520           kernel command line option.
 521
 522 source "drivers/sn/Kconfig"
 523
 524 config KEXEC
 525         bool "kexec system call (EXPERIMENTAL)"
 526         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 527         help
 528           kexec is a system call that implements the ability to shutdown your
 529           current kernel, and to start another kernel.  It is like a reboot
 530           but it is independent of the system firmware.   And like a reboot
 531           you can start any kernel with it, not just Linux.
 532
 533           The name comes from the similarity to the exec system call.
 534
 535           It is an ongoing process to be certain the hardware in a machine
 536           is properly shutdown, so do not be surprised if this code does not
 537           initially work for you.  It may help to enable device hotplugging
 538           support.  As of this writing the exact hardware interface is
 539           strongly in flux, so no good recommendation can be made.
 540
 541 config CRASH_DUMP
 542           bool "kernel crash dumps (EXPERIMENTAL)"
 543           depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 544           help
 545             Generate crash dump after being started by kexec.
 546
 547 source "drivers/firmware/Kconfig"
 548
 549 source "fs/Kconfig.binfmt"
 550
 551 endmenu
 552
 553 menu "Power management and ACPI"
 554
 555 source "kernel/power/Kconfig"
 556
 557 source "drivers/acpi/Kconfig"
 558
 559 if PM
 560
 561 source "arch/ia64/kernel/cpufreq/Kconfig"
 562
 563 endif
 564
 565 endmenu
 566
 567 if !IA64_HP_SIM
 568
 569 menu "Bus options (PCI, PCMCIA)"
 570
 571 config PCI
 572         bool "PCI support"
 573         help
 574           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 575           here unless you are using a simulator without PCI support.
 576
 577 config PCI_DOMAINS
 578         def_bool PCI
 579
 580 config PCI_SYSCALL
 581         def_bool PCI
 582
 583 source "drivers/pci/pcie/Kconfig"
 584
 585 source "drivers/pci/Kconfig"
 586
 587 source "drivers/pci/hotplug/Kconfig"
 588
 589 source "drivers/pcmcia/Kconfig"
 590
 591 endmenu
 592
 593 endif
 594
 595 source "net/Kconfig"
 596
 597 source "drivers/Kconfig"
 598
 599 config MSPEC
 600         tristate "Memory special operations driver"
 601         depends on IA64
 602         select IA64_UNCACHED_ALLOCATOR
 603         help
 604           If you have an ia64 and you want to enable memory special
 605           operations support (formerly known as fetchop), say Y here,
 606           otherwise say N.
 607
 608 source "fs/Kconfig"
 609
 610 source "arch/ia64/kvm/Kconfig"
 611
 612 source "lib/Kconfig"
 613
 614 #
 615 # Use the generic interrupt handling code in kernel/irq/:
 616 #
 617 config GENERIC_HARDIRQS
 618         bool
 619         default y
 620
 621 config GENERIC_IRQ_PROBE
 622         bool
 623         default y
 624
 625 config GENERIC_PENDING_IRQ
 626         bool
 627         depends on GENERIC_HARDIRQS && SMP
 628         default y
 629
 630 config IRQ_PER_CPU
 631         bool
 632         default y
 633
 634 config IOMMU_HELPER
 635         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)
 636
 637 source "arch/ia64/hp/sim/Kconfig"
 638
 639 source "arch/ia64/Kconfig.debug"
 640
 641 source "security/Kconfig"
 642
 643 source "crypto/Kconfig"