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         default y
  19         help
  20           The Itanium Processor Family is Intel's 64-bit successor to
  21           the 32-bit X86 line.  The IA-64 Linux project has a home
  22           page at <http://www.linuxia64.org/> and a mailing list at
  23           <linux-ia64@vger.kernel.org>.
  24
  25 config 64BIT
  26         bool
  27         select ATA_NONSTANDARD if ATA
  28         default y
  29
  30 config ZONE_DMA
  31         def_bool y
  32         depends on !IA64_SGI_SN2
  33
  34 config QUICKLIST
  35         bool
  36         default y
  37
  38 config MMU
  39         bool
  40         default y
  41
  42 config SWIOTLB
  43        bool
  44
  45 config RWSEM_XCHGADD_ALGORITHM
  46         bool
  47         default y
  48
  49 config ARCH_HAS_ILOG2_U32
  50         bool
  51         default n
  52
  53 config ARCH_HAS_ILOG2_U64
  54         bool
  55         default n
  56
  57 config HUGETLB_PAGE_SIZE_VARIABLE
  58         bool
  59         depends on HUGETLB_PAGE
  60         default y
  61
  62 config GENERIC_FIND_NEXT_BIT
  63         bool
  64         default y
  65
  66 config GENERIC_CALIBRATE_DELAY
  67         bool
  68         default y
  69
  70 config GENERIC_TIME
  71         bool
  72         default y
  73
  74 config GENERIC_TIME_VSYSCALL
  75         bool
  76         default y
  77
  78 config DMI
  79         bool
  80         default y
  81
  82 config EFI
  83         bool
  84         default y
  85
  86 config GENERIC_IOMAP
  87         bool
  88         default y
  89
  90 config SCHED_NO_NO_OMIT_FRAME_POINTER
  91         bool
  92         default y
  93
  94 config IA64_UNCACHED_ALLOCATOR
  95         bool
  96         select GENERIC_ALLOCATOR
  97
  98 config AUDIT_ARCH
  99         bool
 100         default y
 101
 102 choice
 103         prompt "System type"
 104         default IA64_GENERIC
 105
 106 config IA64_GENERIC
 107         bool "generic"
 108         select NUMA
 109         select ACPI_NUMA
 110         select SWIOTLB
 111         help
 112           This selects the system type of your hardware.  A "generic" kernel
 113           will run on any supported IA-64 system.  However, if you configure
 114           a kernel for your specific system, it will be faster and smaller.
 115
 116           generic               For any supported IA-64 system
 117           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 118           HP-zx1/sx1000         For HP systems
 119           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 120           SGI-SN2               For SGI Altix systems
 121           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 122
 123           If you don't know what to do, choose "generic".
 124
 125 config IA64_DIG
 126         bool "DIG-compliant"
 127         select SWIOTLB
 128
 129 config IA64_HP_ZX1
 130         bool "HP-zx1/sx1000"
 131         help
 132           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 133           support for the HP I/O MMU.
 134
 135 config IA64_HP_ZX1_SWIOTLB
 136         bool "HP-zx1/sx1000 with software I/O TLB"
 137         select SWIOTLB
 138         help
 139           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 140           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 141           from support for the HP I/O MMU, this includes support for the software
 142           I/O TLB, which allows supporting the broken devices at the expense of
 143           wasting some kernel memory (about 2MB by default).
 144
 145 config IA64_SGI_SN2
 146         bool "SGI-SN2"
 147         help
 148           Selecting this option will optimize the kernel for use on sn2 based
 149           systems, but the resulting kernel binary will not run on other
 150           types of ia64 systems.  If you have an SGI Altix system, it's safe
 151           to select this option.  If in doubt, select ia64 generic support
 152           instead.
 153
 154 config IA64_HP_SIM
 155         bool "Ski-simulator"
 156         select SWIOTLB
 157
 158 endchoice
 159
 160 choice
 161         prompt "Processor type"
 162         default ITANIUM
 163
 164 config ITANIUM
 165         bool "Itanium"
 166         help
 167           Select your IA-64 processor type.  The default is Itanium.
 168           This choice is safe for all IA-64 systems, but may not perform
 169           optimally on systems with, say, Itanium 2 or newer processors.
 170
 171 config MCKINLEY
 172         bool "Itanium 2"
 173         help
 174           Select this to configure for an Itanium 2 (McKinley) processor.
 175
 176 endchoice
 177
 178 choice
 179         prompt "Kernel page size"
 180         default IA64_PAGE_SIZE_16KB
 181
 182 config IA64_PAGE_SIZE_4KB
 183         bool "4KB"
 184         help
 185           This lets you select the page size of the kernel.  For best IA-64
 186           performance, a page size of 8KB or 16KB is recommended.  For best
 187           IA-32 compatibility, a page size of 4KB should be selected (the vast
 188           majority of IA-32 binaries work perfectly fine with a larger page
 189           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 190           be selected.
 191
 192           4KB                For best IA-32 compatibility
 193           8KB                For best IA-64 performance
 194           16KB               For best IA-64 performance
 195           64KB               Requires Itanium 2 or newer processor.
 196
 197           If you don't know what to do, choose 16KB.
 198
 199 config IA64_PAGE_SIZE_8KB
 200         bool "8KB"
 201
 202 config IA64_PAGE_SIZE_16KB
 203         bool "16KB"
 204
 205 config IA64_PAGE_SIZE_64KB
 206         depends on !ITANIUM
 207         bool "64KB"
 208
 209 endchoice
 210
 211 choice
 212         prompt "Page Table Levels"
 213         default PGTABLE_3
 214
 215 config PGTABLE_3
 216         bool "3 Levels"
 217
 218 config PGTABLE_4
 219         depends on !IA64_PAGE_SIZE_64KB
 220         bool "4 Levels"
 221
 222 endchoice
 223
 224 source kernel/Kconfig.hz
 225
 226 config IA64_BRL_EMU
 227         bool
 228         depends on ITANIUM
 229         default y
 230
 231 # align cache-sensitive data to 128 bytes
 232 config IA64_L1_CACHE_SHIFT
 233         int
 234         default "7" if MCKINLEY
 235         default "6" if ITANIUM
 236
 237 config IA64_CYCLONE
 238         bool "Cyclone (EXA) Time Source support"
 239         help
 240           Say Y here to enable support for IBM EXA Cyclone time source.
 241           If you're unsure, answer N.
 242
 243 config IOSAPIC
 244         bool
 245         depends on !IA64_HP_SIM
 246         default y
 247
 248 config IA64_SGI_SN_XP
 249         tristate "Support communication between SGI SSIs"
 250         depends on IA64_GENERIC || IA64_SGI_SN2
 251         select IA64_UNCACHED_ALLOCATOR
 252         help
 253           An SGI machine can be divided into multiple Single System
 254           Images which act independently of each other and have
 255           hardware based memory protection from the others.  Enabling
 256           this feature will allow for direct communication between SSIs
 257           based on a network adapter and DMA messaging.
 258
 259 config FORCE_MAX_ZONEORDER
 260         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 261         range 11 17  if !HUGETLB_PAGE
 262         default "17" if HUGETLB_PAGE
 263         default "11"
 264
 265 config SMP
 266         bool "Symmetric multi-processing support"
 267         help
 268           This enables support for systems with more than one CPU. If you have
 269           a system with only one CPU, say N.  If you have a system with more
 270           than one CPU, say Y.
 271
 272           If you say N here, the kernel will run on single and multiprocessor
 273           systems, but will use only one CPU of a multiprocessor system.  If
 274           you say Y here, the kernel will run on many, but not all,
 275           single processor systems.  On a single processor system, the kernel
 276           will run faster if you say N here.
 277
 278           See also the <file:Documentation/smp.txt> and the SMP-HOWTO
 279           available at <http://www.tldp.org/docs.html#howto>.
 280
 281           If you don't know what to do here, say N.
 282
 283 config NR_CPUS
 284         int "Maximum number of CPUs (2-1024)"
 285         range 2 1024
 286         depends on SMP
 287         default "1024"
 288         help
 289           You should set this to the number of CPUs in your system, but
 290           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 291           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 292           than 64 will cause the use of a CPU mask array, causing a small
 293           performance hit.
 294
 295 config HOTPLUG_CPU
 296         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 297         depends on SMP && EXPERIMENTAL
 298         select HOTPLUG
 299         default n
 300         ---help---
 301           Say Y here to experiment with turning CPUs off and on.  CPUs
 302           can be controlled through /sys/devices/system/cpu/cpu#.
 303           Say N if you want to disable CPU hotplug.
 304
 305 config ARCH_ENABLE_MEMORY_HOTPLUG
 306         def_bool y
 307
 308 config SCHED_SMT
 309         bool "SMT scheduler support"
 310         depends on SMP
 311         help
 312           Improves the CPU scheduler's decision making when dealing with
 313           Intel IA64 chips with MultiThreading at a cost of slightly increased
 314           overhead in some places. If unsure say N here.
 315
 316 config PERMIT_BSP_REMOVE
 317         bool "Support removal of Bootstrap Processor"
 318         depends on HOTPLUG_CPU
 319         default n
 320         ---help---
 321         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 322         support.
 323
 324 config FORCE_CPEI_RETARGET
 325         bool "Force assumption that CPEI can be re-targetted"
 326         depends on PERMIT_BSP_REMOVE
 327         default n
 328         ---help---
 329         Say Y if you need to force the assumption that CPEI can be re-targetted to
 330         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 331         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 332         This option it useful to enable this feature on older BIOS's as well.
 333         You can also enable this by using boot command line option force_cpei=1.
 334
 335 source "kernel/Kconfig.preempt"
 336
 337 source "mm/Kconfig"
 338
 339 config ARCH_SELECT_MEMORY_MODEL
 340         def_bool y
 341
 342 config ARCH_DISCONTIGMEM_ENABLE
 343         def_bool y
 344         help
 345           Say Y to support efficient handling of discontiguous physical memory,
 346           for architectures which are either NUMA (Non-Uniform Memory Access)
 347           or have huge holes in the physical address space for other reasons.
 348           See <file:Documentation/vm/numa> for more.
 349
 350 config ARCH_FLATMEM_ENABLE
 351         def_bool y
 352
 353 config ARCH_SPARSEMEM_ENABLE
 354         def_bool y
 355         depends on ARCH_DISCONTIGMEM_ENABLE
 356         select SPARSEMEM_VMEMMAP_ENABLE
 357
 358 config ARCH_DISCONTIGMEM_DEFAULT
 359         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 360         depends on ARCH_DISCONTIGMEM_ENABLE
 361
 362 config NUMA
 363         bool "NUMA support"
 364         depends on !IA64_HP_SIM && !FLATMEM
 365         default y if IA64_SGI_SN2
 366         select ACPI_NUMA if ACPI
 367         help
 368           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 369           Access).  This option is for configuring high-end multiprocessor
 370           server systems.  If in doubt, say N.
 371
 372 config NODES_SHIFT
 373         int "Max num nodes shift(3-10)"
 374         range 3 10
 375         default "10"
 376         depends on NEED_MULTIPLE_NODES
 377         help
 378           This option specifies the maximum number of nodes in your SSI system.
 379           MAX_NUMNODES will be 2^(This value).
 380           If in doubt, use the default.
 381
 382 config ARCH_POPULATES_NODE_MAP
 383         def_bool y
 384
 385 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 386 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 387 config VIRTUAL_MEM_MAP
 388         bool "Virtual mem map"
 389         depends on !SPARSEMEM
 390         default y if !IA64_HP_SIM
 391         help
 392           Say Y to compile the kernel with support for a virtual mem map.
 393           This code also only takes effect if a memory hole of greater than
 394           1 Gb is found during boot.  You must turn this option on if you
 395           require the DISCONTIGMEM option for your machine. If you are
 396           unsure, say Y.
 397
 398 config HOLES_IN_ZONE
 399         bool
 400         default y if VIRTUAL_MEM_MAP
 401
 402 config HAVE_ARCH_EARLY_PFN_TO_NID
 403         def_bool y
 404         depends on NEED_MULTIPLE_NODES
 405
 406 config HAVE_ARCH_NODEDATA_EXTENSION
 407         def_bool y
 408         depends on NUMA
 409
 410 config IA32_SUPPORT
 411         bool "Support for Linux/x86 binaries"
 412         help
 413           IA-64 processors can execute IA-32 (X86) instructions.  By
 414           saying Y here, the kernel will include IA-32 system call
 415           emulation support which makes it possible to transparently
 416           run IA-32 Linux binaries on an IA-64 Linux system.
 417           If in doubt, say Y.
 418
 419 config COMPAT
 420         bool
 421         depends on IA32_SUPPORT
 422         default y
 423
 424 config COMPAT_FOR_U64_ALIGNMENT
 425         def_bool COMPAT
 426
 427 config IA64_MCA_RECOVERY
 428         tristate "MCA recovery from errors other than TLB."
 429
 430 config PERFMON
 431         bool "Performance monitor support"
 432         help
 433           Selects whether support for the IA-64 performance monitor hardware
 434           is included in the kernel.  This makes some kernel data-structures a
 435           little bigger and slows down execution a bit, but it is generally
 436           a good idea to turn this on.  If you're unsure, say Y.
 437
 438 config IA64_PALINFO
 439         tristate "/proc/pal support"
 440         help
 441           If you say Y here, you are able to get PAL (Processor Abstraction
 442           Layer) information in /proc/pal.  This contains useful information
 443           about the processors in your systems, such as cache and TLB sizes
 444           and the PAL firmware version in use.
 445
 446           To use this option, you have to ensure that the "/proc file system
 447           support" (CONFIG_PROC_FS) is enabled, too.
 448
 449 config IA64_MC_ERR_INJECT
 450         tristate "MC error injection support"
 451         help
 452           Selets whether support for MC error injection. By enabling the
 453           support, kernel provide sysfs interface for user application to
 454           call MC error injection PAL procedure to inject various errors.
 455           This is a useful tool for MCA testing.
 456
 457           If you're unsure, do not select this option.
 458
 459 config SGI_SN
 460         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 461
 462 config IA64_ESI
 463         bool "ESI (Extensible SAL Interface) support"
 464         help
 465           If you say Y here, support is built into the kernel to
 466           make ESI calls.  ESI calls are used to support vendor-specific
 467           firmware extensions, such as the ability to inject memory-errors
 468           for test-purposes.  If you're unsure, say N.
 469
 470 config IA64_HP_AML_NFW
 471         bool "Support ACPI AML calls to native firmware"
 472         help
 473           This driver installs a global ACPI Operation Region handler for
 474           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 475           native firmware functions.  The driver installs the OpRegion
 476           handler if there is an HPQ5001 device or if the user supplies
 477           the "force" module parameter, e.g., with the "aml_nfw.force"
 478           kernel command line option.
 479
 480 source "drivers/sn/Kconfig"
 481
 482 config KEXEC
 483         bool "kexec system call (EXPERIMENTAL)"
 484         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 485         help
 486           kexec is a system call that implements the ability to shutdown your
 487           current kernel, and to start another kernel.  It is like a reboot
 488           but it is independent of the system firmware.   And like a reboot
 489           you can start any kernel with it, not just Linux.
 490
 491           The name comes from the similiarity to the exec system call.
 492
 493           It is an ongoing process to be certain the hardware in a machine
 494           is properly shutdown, so do not be surprised if this code does not
 495           initially work for you.  It may help to enable device hotplugging
 496           support.  As of this writing the exact hardware interface is
 497           strongly in flux, so no good recommendation can be made.
 498
 499 config CRASH_DUMP
 500           bool "kernel crash dumps (EXPERIMENTAL)"
 501           depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 502           help
 503             Generate crash dump after being started by kexec.
 504
 505 source "drivers/firmware/Kconfig"
 506
 507 source "fs/Kconfig.binfmt"
 508
 509 endmenu
 510
 511 menu "Power management and ACPI"
 512
 513 source "kernel/power/Kconfig"
 514
 515 source "drivers/acpi/Kconfig"
 516
 517 if PM
 518
 519 source "arch/ia64/kernel/cpufreq/Kconfig"
 520
 521 endif
 522
 523 endmenu
 524
 525 if !IA64_HP_SIM
 526
 527 menu "Bus options (PCI, PCMCIA)"
 528
 529 config PCI
 530         bool "PCI support"
 531         help
 532           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 533           here unless you are using a simulator without PCI support.
 534
 535 config PCI_DOMAINS
 536         def_bool PCI
 537
 538 config PCI_SYSCALL
 539         def_bool PCI
 540
 541 source "drivers/pci/pcie/Kconfig"
 542
 543 source "drivers/pci/Kconfig"
 544
 545 source "drivers/pci/hotplug/Kconfig"
 546
 547 source "drivers/pcmcia/Kconfig"
 548
 549 endmenu
 550
 551 endif
 552
 553 source "net/Kconfig"
 554
 555 source "drivers/Kconfig"
 556
 557 config MSPEC
 558         tristate "Memory special operations driver"
 559         depends on IA64
 560         select IA64_UNCACHED_ALLOCATOR
 561         help
 562           If you have an ia64 and you want to enable memory special
 563           operations support (formerly known as fetchop), say Y here,
 564           otherwise say N.
 565
 566 source "fs/Kconfig"
 567
 568 source "lib/Kconfig"
 569
 570 #
 571 # Use the generic interrupt handling code in kernel/irq/:
 572 #
 573 config GENERIC_HARDIRQS
 574         bool
 575         default y
 576
 577 config GENERIC_IRQ_PROBE
 578         bool
 579         default y
 580
 581 config GENERIC_PENDING_IRQ
 582         bool
 583         depends on GENERIC_HARDIRQS && SMP
 584         default y
 585
 586 config IRQ_PER_CPU
 587         bool
 588         default y
 589
 590 source "arch/ia64/hp/sim/Kconfig"
 591
 592 menu "Instrumentation Support"
 593         depends on EXPERIMENTAL
 594
 595 source "arch/ia64/oprofile/Kconfig"
 596
 597 config KPROBES
 598         bool "Kprobes"
 599         depends on KALLSYMS && MODULES
 600         help
 601           Kprobes allows you to trap at almost any kernel address and
 602           execute a callback function.  register_kprobe() establishes
 603           a probepoint and specifies the callback.  Kprobes is useful
 604           for kernel debugging, non-intrusive instrumentation and testing.
 605           If in doubt, say "N".
 606 endmenu
 607
 608 source "arch/ia64/Kconfig.debug"
 609
 610 source "security/Kconfig"
 611
 612 source "crypto/Kconfig"