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