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