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