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 source "kernel/Kconfig.preempt"
 331
 332 source "mm/Kconfig"
 333
 334 config ARCH_SELECT_MEMORY_MODEL
 335         def_bool y
 336
 337 config ARCH_DISCONTIGMEM_ENABLE
 338         def_bool y
 339         help
 340           Say Y to support efficient handling of discontiguous physical memory,
 341           for architectures which are either NUMA (Non-Uniform Memory Access)
 342           or have huge holes in the physical address space for other reasons.
 343           See <file:Documentation/vm/numa> for more.
 344
 345 config ARCH_FLATMEM_ENABLE
 346         def_bool y
 347
 348 config ARCH_SPARSEMEM_ENABLE
 349         def_bool y
 350         depends on ARCH_DISCONTIGMEM_ENABLE
 351
 352 config ARCH_DISCONTIGMEM_DEFAULT
 353         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 354         depends on ARCH_DISCONTIGMEM_ENABLE
 355
 356 config NUMA
 357         bool "NUMA support"
 358         depends on !IA64_HP_SIM && !FLATMEM
 359         default y if IA64_SGI_SN2
 360         select ACPI_NUMA if ACPI
 361         help
 362           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 363           Access).  This option is for configuring high-end multiprocessor
 364           server systems.  If in doubt, say N.
 365
 366 config NODES_SHIFT
 367         int "Max num nodes shift(3-10)"
 368         range 3 10
 369         default "10"
 370         depends on NEED_MULTIPLE_NODES
 371         help
 372           This option specifies the maximum number of nodes in your SSI system.
 373           MAX_NUMNODES will be 2^(This value).
 374           If in doubt, use the default.
 375
 376 config ARCH_POPULATES_NODE_MAP
 377         def_bool y
 378
 379 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 380 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 381 config VIRTUAL_MEM_MAP
 382         bool "Virtual mem map"
 383         depends on !SPARSEMEM
 384         default y if !IA64_HP_SIM
 385         help
 386           Say Y to compile the kernel with support for a virtual mem map.
 387           This code also only takes effect if a memory hole of greater than
 388           1 Gb is found during boot.  You must turn this option on if you
 389           require the DISCONTIGMEM option for your machine. If you are
 390           unsure, say Y.
 391
 392 config HOLES_IN_ZONE
 393         bool
 394         default y if VIRTUAL_MEM_MAP
 395
 396 config HAVE_ARCH_EARLY_PFN_TO_NID
 397         def_bool y
 398         depends on NEED_MULTIPLE_NODES
 399
 400 config HAVE_ARCH_NODEDATA_EXTENSION
 401         def_bool y
 402         depends on NUMA
 403
 404 config IA32_SUPPORT
 405         bool "Support for Linux/x86 binaries"
 406         help
 407           IA-64 processors can execute IA-32 (X86) instructions.  By
 408           saying Y here, the kernel will include IA-32 system call
 409           emulation support which makes it possible to transparently
 410           run IA-32 Linux binaries on an IA-64 Linux system.
 411           If in doubt, say Y.
 412
 413 config COMPAT
 414         bool
 415         depends on IA32_SUPPORT
 416         default y
 417
 418 config COMPAT_FOR_U64_ALIGNMENT
 419         def_bool COMPAT
 420
 421 config IA64_MCA_RECOVERY
 422         tristate "MCA recovery from errors other than TLB."
 423
 424 config PERFMON
 425         bool "Performance monitor support"
 426         help
 427           Selects whether support for the IA-64 performance monitor hardware
 428           is included in the kernel.  This makes some kernel data-structures a
 429           little bigger and slows down execution a bit, but it is generally
 430           a good idea to turn this on.  If you're unsure, say Y.
 431
 432 config IA64_PALINFO
 433         tristate "/proc/pal support"
 434         help
 435           If you say Y here, you are able to get PAL (Processor Abstraction
 436           Layer) information in /proc/pal.  This contains useful information
 437           about the processors in your systems, such as cache and TLB sizes
 438           and the PAL firmware version in use.
 439
 440           To use this option, you have to ensure that the "/proc file system
 441           support" (CONFIG_PROC_FS) is enabled, too.
 442
 443 config IA64_MC_ERR_INJECT
 444         tristate "MC error injection support"
 445         help
 446           Selets whether support for MC error injection. By enabling the
 447           support, kernel provide sysfs interface for user application to
 448           call MC error injection PAL procedure to inject various errors.
 449           This is a useful tool for MCA testing.
 450
 451           If you're unsure, do not select this option.
 452
 453 config SGI_SN
 454         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 455
 456 config IA64_ESI
 457         bool "ESI (Extensible SAL Interface) support"
 458         help
 459           If you say Y here, support is built into the kernel to
 460           make ESI calls.  ESI calls are used to support vendor-specific
 461           firmware extensions, such as the ability to inject memory-errors
 462           for test-purposes.  If you're unsure, say N.
 463
 464 source "drivers/sn/Kconfig"
 465
 466 config KEXEC
 467         bool "kexec system call (EXPERIMENTAL)"
 468         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 469         help
 470           kexec is a system call that implements the ability to shutdown your
 471           current kernel, and to start another kernel.  It is like a reboot
 472           but it is independent of the system firmware.   And like a reboot
 473           you can start any kernel with it, not just Linux.
 474
 475           The name comes from the similiarity to the exec system call.
 476
 477           It is an ongoing process to be certain the hardware in a machine
 478           is properly shutdown, so do not be surprised if this code does not
 479           initially work for you.  It may help to enable device hotplugging
 480           support.  As of this writing the exact hardware interface is
 481           strongly in flux, so no good recommendation can be made.
 482
 483 config CRASH_DUMP
 484           bool "kernel crash dumps (EXPERIMENTAL)"
 485           depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 486           help
 487             Generate crash dump after being started by kexec.
 488
 489 source "drivers/firmware/Kconfig"
 490
 491 source "fs/Kconfig.binfmt"
 492
 493 endmenu
 494
 495 menu "Power management and ACPI"
 496
 497 source "kernel/power/Kconfig"
 498
 499 source "drivers/acpi/Kconfig"
 500
 501 if PM
 502
 503 source "arch/ia64/kernel/cpufreq/Kconfig"
 504
 505 endif
 506
 507 endmenu
 508
 509 if !IA64_HP_SIM
 510
 511 menu "Bus options (PCI, PCMCIA)"
 512
 513 config PCI
 514         bool "PCI support"
 515         help
 516           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 517           here unless you are using a simulator without PCI support.
 518
 519 config PCI_DOMAINS
 520         def_bool PCI
 521
 522 config PCI_SYSCALL
 523         def_bool PCI
 524
 525 source "drivers/pci/pcie/Kconfig"
 526
 527 source "drivers/pci/Kconfig"
 528
 529 source "drivers/pci/hotplug/Kconfig"
 530
 531 source "drivers/pcmcia/Kconfig"
 532
 533 endmenu
 534
 535 endif
 536
 537 source "net/Kconfig"
 538
 539 source "drivers/Kconfig"
 540
 541 config MSPEC
 542         tristate "Memory special operations driver"
 543         depends on IA64
 544         select IA64_UNCACHED_ALLOCATOR
 545         help
 546           If you have an ia64 and you want to enable memory special
 547           operations support (formerly known as fetchop), say Y here,
 548           otherwise say N.
 549
 550 source "fs/Kconfig"
 551
 552 source "lib/Kconfig"
 553
 554 #
 555 # Use the generic interrupt handling code in kernel/irq/:
 556 #
 557 config GENERIC_HARDIRQS
 558         bool
 559         default y
 560
 561 config GENERIC_IRQ_PROBE
 562         bool
 563         default y
 564
 565 config GENERIC_PENDING_IRQ
 566         bool
 567         depends on GENERIC_HARDIRQS && SMP
 568         default y
 569
 570 config IRQ_PER_CPU
 571         bool
 572         default y
 573
 574 source "arch/ia64/hp/sim/Kconfig"
 575
 576 menu "Instrumentation Support"
 577         depends on EXPERIMENTAL
 578
 579 source "arch/ia64/oprofile/Kconfig"
 580
 581 config KPROBES
 582         bool "Kprobes"
 583         depends on KALLSYMS && MODULES
 584         help
 585           Kprobes allows you to trap at almost any kernel address and
 586           execute a callback function.  register_kprobe() establishes
 587           a probepoint and specifies the callback.  Kprobes is useful
 588           for kernel debugging, non-intrusive instrumentation and testing.
 589           If in doubt, say "N".
 590 endmenu
 591
 592 source "arch/ia64/Kconfig.debug"
 593
 594 source "security/Kconfig"
 595
 596 source "crypto/Kconfig"