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