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         select HAVE_IDE
  19         select HAVE_OPROFILE
  20         select HAVE_KPROBES
  21         default y
  22         help
  23           The Itanium Processor Family is Intel's 64-bit successor to
  24           the 32-bit X86 line.  The IA-64 Linux project has a home
  25           page at <http://www.linuxia64.org/> and a mailing list at
  26           <linux-ia64@vger.kernel.org>.
  27
  28 config 64BIT
  29         bool
  30         select ATA_NONSTANDARD if ATA
  31         default y
  32
  33 config ZONE_DMA
  34         def_bool y
  35         depends on !IA64_SGI_SN2
  36
  37 config QUICKLIST
  38         bool
  39         default y
  40
  41 config MMU
  42         bool
  43         default y
  44
  45 config SWIOTLB
  46        bool
  47
  48 config GENERIC_LOCKBREAK
  49         bool
  50         default y
  51         depends on SMP && PREEMPT
  52
  53 config RWSEM_XCHGADD_ALGORITHM
  54         bool
  55         default y
  56
  57 config ARCH_HAS_ILOG2_U32
  58         bool
  59         default n
  60
  61 config ARCH_HAS_ILOG2_U64
  62         bool
  63         default n
  64
  65 config HUGETLB_PAGE_SIZE_VARIABLE
  66         bool
  67         depends on HUGETLB_PAGE
  68         default y
  69
  70 config GENERIC_FIND_NEXT_BIT
  71         bool
  72         default y
  73
  74 config GENERIC_CALIBRATE_DELAY
  75         bool
  76         default y
  77
  78 config GENERIC_TIME
  79         bool
  80         default y
  81
  82 config GENERIC_TIME_VSYSCALL
  83         bool
  84         default y
  85
  86 config HAVE_SETUP_PER_CPU_AREA
  87         def_bool y
  88
  89 config DMI
  90         bool
  91         default y
  92
  93 config EFI
  94         bool
  95         default y
  96
  97 config GENERIC_IOMAP
  98         bool
  99         default y
 100
 101 config SCHED_NO_NO_OMIT_FRAME_POINTER
 102         bool
 103         default y
 104
 105 config IA64_UNCACHED_ALLOCATOR
 106         bool
 107         select GENERIC_ALLOCATOR
 108
 109 config AUDIT_ARCH
 110         bool
 111         default y
 112
 113 choice
 114         prompt "System type"
 115         default IA64_GENERIC
 116
 117 config IA64_GENERIC
 118         bool "generic"
 119         select NUMA
 120         select ACPI_NUMA
 121         select SWIOTLB
 122         help
 123           This selects the system type of your hardware.  A "generic" kernel
 124           will run on any supported IA-64 system.  However, if you configure
 125           a kernel for your specific system, it will be faster and smaller.
 126
 127           generic               For any supported IA-64 system
 128           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 129           HP-zx1/sx1000         For HP systems
 130           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 131           SGI-SN2               For SGI Altix systems
 132           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 133
 134           If you don't know what to do, choose "generic".
 135
 136 config IA64_DIG
 137         bool "DIG-compliant"
 138         select SWIOTLB
 139
 140 config IA64_HP_ZX1
 141         bool "HP-zx1/sx1000"
 142         help
 143           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 144           support for the HP I/O MMU.
 145
 146 config IA64_HP_ZX1_SWIOTLB
 147         bool "HP-zx1/sx1000 with software I/O TLB"
 148         select SWIOTLB
 149         help
 150           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 151           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 152           from support for the HP I/O MMU, this includes support for the software
 153           I/O TLB, which allows supporting the broken devices at the expense of
 154           wasting some kernel memory (about 2MB by default).
 155
 156 config IA64_SGI_SN2
 157         bool "SGI-SN2"
 158         help
 159           Selecting this option will optimize the kernel for use on sn2 based
 160           systems, but the resulting kernel binary will not run on other
 161           types of ia64 systems.  If you have an SGI Altix system, it's safe
 162           to select this option.  If in doubt, select ia64 generic support
 163           instead.
 164
 165 config IA64_HP_SIM
 166         bool "Ski-simulator"
 167         select SWIOTLB
 168
 169 endchoice
 170
 171 choice
 172         prompt "Processor type"
 173         default ITANIUM
 174
 175 config ITANIUM
 176         bool "Itanium"
 177         help
 178           Select your IA-64 processor type.  The default is Itanium.
 179           This choice is safe for all IA-64 systems, but may not perform
 180           optimally on systems with, say, Itanium 2 or newer processors.
 181
 182 config MCKINLEY
 183         bool "Itanium 2"
 184         help
 185           Select this to configure for an Itanium 2 (McKinley) processor.
 186
 187 endchoice
 188
 189 choice
 190         prompt "Kernel page size"
 191         default IA64_PAGE_SIZE_16KB
 192
 193 config IA64_PAGE_SIZE_4KB
 194         bool "4KB"
 195         help
 196           This lets you select the page size of the kernel.  For best IA-64
 197           performance, a page size of 8KB or 16KB is recommended.  For best
 198           IA-32 compatibility, a page size of 4KB should be selected (the vast
 199           majority of IA-32 binaries work perfectly fine with a larger page
 200           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 201           be selected.
 202
 203           4KB                For best IA-32 compatibility
 204           8KB                For best IA-64 performance
 205           16KB               For best IA-64 performance
 206           64KB               Requires Itanium 2 or newer processor.
 207
 208           If you don't know what to do, choose 16KB.
 209
 210 config IA64_PAGE_SIZE_8KB
 211         bool "8KB"
 212
 213 config IA64_PAGE_SIZE_16KB
 214         bool "16KB"
 215
 216 config IA64_PAGE_SIZE_64KB
 217         depends on !ITANIUM
 218         bool "64KB"
 219
 220 endchoice
 221
 222 choice
 223         prompt "Page Table Levels"
 224         default PGTABLE_3
 225
 226 config PGTABLE_3
 227         bool "3 Levels"
 228
 229 config PGTABLE_4
 230         depends on !IA64_PAGE_SIZE_64KB
 231         bool "4 Levels"
 232
 233 endchoice
 234
 235 if IA64_HP_SIM
 236 config HZ
 237         default 32
 238 endif
 239
 240 if !IA64_HP_SIM
 241 source kernel/Kconfig.hz
 242 endif
 243
 244 config IA64_BRL_EMU
 245         bool
 246         depends on ITANIUM
 247         default y
 248
 249 # align cache-sensitive data to 128 bytes
 250 config IA64_L1_CACHE_SHIFT
 251         int
 252         default "7" if MCKINLEY
 253         default "6" if ITANIUM
 254
 255 config IA64_CYCLONE
 256         bool "Cyclone (EXA) Time Source support"
 257         help
 258           Say Y here to enable support for IBM EXA Cyclone time source.
 259           If you're unsure, answer N.
 260
 261 config IOSAPIC
 262         bool
 263         depends on !IA64_HP_SIM
 264         default y
 265
 266 config IA64_SGI_SN_XP
 267         tristate "Support communication between SGI SSIs"
 268         depends on IA64_GENERIC || IA64_SGI_SN2
 269         select IA64_UNCACHED_ALLOCATOR
 270         help
 271           An SGI machine can be divided into multiple Single System
 272           Images which act independently of each other and have
 273           hardware based memory protection from the others.  Enabling
 274           this feature will allow for direct communication between SSIs
 275           based on a network adapter and DMA messaging.
 276
 277 config FORCE_MAX_ZONEORDER
 278         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 279         range 11 17  if !HUGETLB_PAGE
 280         default "17" if HUGETLB_PAGE
 281         default "11"
 282
 283 config VIRT_CPU_ACCOUNTING
 284         bool "Deterministic task and CPU time accounting"
 285         default n
 286         help
 287           Select this option to enable more accurate task and CPU time
 288           accounting.  This is done by reading a CPU counter on each
 289           kernel entry and exit and on transitions within the kernel
 290           between system, softirq and hardirq state, so there is a
 291           small performance impact.
 292           If in doubt, say N here.
 293
 294 config SMP
 295         bool "Symmetric multi-processing support"
 296         help
 297           This enables support for systems with more than one CPU. If you have
 298           a system with only one CPU, say N.  If you have a system with more
 299           than one CPU, say Y.
 300
 301           If you say N here, the kernel will run on single and multiprocessor
 302           systems, but will use only one CPU of a multiprocessor system.  If
 303           you say Y here, the kernel will run on many, but not all,
 304           single processor systems.  On a single processor system, the kernel
 305           will run faster if you say N here.
 306
 307           See also the SMP-HOWTO available at
 308           <http://www.tldp.org/docs.html#howto>.
 309
 310           If you don't know what to do here, say N.
 311
 312 config NR_CPUS
 313         int "Maximum number of CPUs (2-1024)"
 314         range 2 1024
 315         depends on SMP
 316         default "1024"
 317         help
 318           You should set this to the number of CPUs in your system, but
 319           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 320           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 321           than 64 will cause the use of a CPU mask array, causing a small
 322           performance hit.
 323
 324 config HOTPLUG_CPU
 325         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 326         depends on SMP && EXPERIMENTAL
 327         select HOTPLUG
 328         default n
 329         ---help---
 330           Say Y here to experiment with turning CPUs off and on.  CPUs
 331           can be controlled through /sys/devices/system/cpu/cpu#.
 332           Say N if you want to disable CPU hotplug.
 333
 334 config ARCH_ENABLE_MEMORY_HOTPLUG
 335         def_bool y
 336
 337 config ARCH_ENABLE_MEMORY_HOTREMOVE
 338         def_bool y
 339
 340 config SCHED_SMT
 341         bool "SMT scheduler support"
 342         depends on SMP
 343         help
 344           Improves the CPU scheduler's decision making when dealing with
 345           Intel IA64 chips with MultiThreading at a cost of slightly increased
 346           overhead in some places. If unsure say N here.
 347
 348 config PERMIT_BSP_REMOVE
 349         bool "Support removal of Bootstrap Processor"
 350         depends on HOTPLUG_CPU
 351         default n
 352         ---help---
 353         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 354         support.
 355
 356 config FORCE_CPEI_RETARGET
 357         bool "Force assumption that CPEI can be re-targetted"
 358         depends on PERMIT_BSP_REMOVE
 359         default n
 360         ---help---
 361         Say Y if you need to force the assumption that CPEI can be re-targetted to
 362         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 363         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 364         This option it useful to enable this feature on older BIOS's as well.
 365         You can also enable this by using boot command line option force_cpei=1.
 366
 367 source "kernel/Kconfig.preempt"
 368
 369 source "mm/Kconfig"
 370
 371 config ARCH_SELECT_MEMORY_MODEL
 372         def_bool y
 373
 374 config ARCH_DISCONTIGMEM_ENABLE
 375         def_bool y
 376         help
 377           Say Y to support efficient handling of discontiguous physical memory,
 378           for architectures which are either NUMA (Non-Uniform Memory Access)
 379           or have huge holes in the physical address space for other reasons.
 380           See <file:Documentation/vm/numa> for more.
 381
 382 config ARCH_FLATMEM_ENABLE
 383         def_bool y
 384
 385 config ARCH_SPARSEMEM_ENABLE
 386         def_bool y
 387         depends on ARCH_DISCONTIGMEM_ENABLE
 388         select SPARSEMEM_VMEMMAP_ENABLE
 389
 390 config ARCH_DISCONTIGMEM_DEFAULT
 391         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 392         depends on ARCH_DISCONTIGMEM_ENABLE
 393
 394 config NUMA
 395         bool "NUMA support"
 396         depends on !IA64_HP_SIM && !FLATMEM
 397         default y if IA64_SGI_SN2
 398         select ACPI_NUMA if ACPI
 399         help
 400           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 401           Access).  This option is for configuring high-end multiprocessor
 402           server systems.  If in doubt, say N.
 403
 404 config NODES_SHIFT
 405         int "Max num nodes shift(3-10)"
 406         range 3 10
 407         default "10"
 408         depends on NEED_MULTIPLE_NODES
 409         help
 410           This option specifies the maximum number of nodes in your SSI system.
 411           MAX_NUMNODES will be 2^(This value).
 412           If in doubt, use the default.
 413
 414 config ARCH_POPULATES_NODE_MAP
 415         def_bool y
 416
 417 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 418 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 419 config VIRTUAL_MEM_MAP
 420         bool "Virtual mem map"
 421         depends on !SPARSEMEM
 422         default y if !IA64_HP_SIM
 423         help
 424           Say Y to compile the kernel with support for a virtual mem map.
 425           This code also only takes effect if a memory hole of greater than
 426           1 Gb is found during boot.  You must turn this option on if you
 427           require the DISCONTIGMEM option for your machine. If you are
 428           unsure, say Y.
 429
 430 config HOLES_IN_ZONE
 431         bool
 432         default y if VIRTUAL_MEM_MAP
 433
 434 config HAVE_ARCH_EARLY_PFN_TO_NID
 435         def_bool y
 436         depends on NEED_MULTIPLE_NODES
 437
 438 config HAVE_ARCH_NODEDATA_EXTENSION
 439         def_bool y
 440         depends on NUMA
 441
 442 config IA32_SUPPORT
 443         bool "Support for Linux/x86 binaries"
 444         help
 445           IA-64 processors can execute IA-32 (X86) instructions.  By
 446           saying Y here, the kernel will include IA-32 system call
 447           emulation support which makes it possible to transparently
 448           run IA-32 Linux binaries on an IA-64 Linux system.
 449           If in doubt, say Y.
 450
 451 config COMPAT
 452         bool
 453         depends on IA32_SUPPORT
 454         default y
 455
 456 config COMPAT_FOR_U64_ALIGNMENT
 457         def_bool COMPAT
 458
 459 config IA64_MCA_RECOVERY
 460         tristate "MCA recovery from errors other than TLB."
 461
 462 config PERFMON
 463         bool "Performance monitor support"
 464         help
 465           Selects whether support for the IA-64 performance monitor hardware
 466           is included in the kernel.  This makes some kernel data-structures a
 467           little bigger and slows down execution a bit, but it is generally
 468           a good idea to turn this on.  If you're unsure, say Y.
 469
 470 config IA64_PALINFO
 471         tristate "/proc/pal support"
 472         help
 473           If you say Y here, you are able to get PAL (Processor Abstraction
 474           Layer) information in /proc/pal.  This contains useful information
 475           about the processors in your systems, such as cache and TLB sizes
 476           and the PAL firmware version in use.
 477
 478           To use this option, you have to ensure that the "/proc file system
 479           support" (CONFIG_PROC_FS) is enabled, too.
 480
 481 config IA64_MC_ERR_INJECT
 482         tristate "MC error injection support"
 483         help
 484           Adds support for MC error injection. If enabled, the kernel
 485           will provide a sysfs interface for user applications to
 486           call MC error injection PAL procedures to inject various errors.
 487           This is a useful tool for MCA testing.
 488
 489           If you're unsure, do not select this option.
 490
 491 config SGI_SN
 492         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 493
 494 config IA64_ESI
 495         bool "ESI (Extensible SAL Interface) support"
 496         help
 497           If you say Y here, support is built into the kernel to
 498           make ESI calls.  ESI calls are used to support vendor-specific
 499           firmware extensions, such as the ability to inject memory-errors
 500           for test-purposes.  If you're unsure, say N.
 501
 502 config IA64_HP_AML_NFW
 503         bool "Support ACPI AML calls to native firmware"
 504         help
 505           This driver installs a global ACPI Operation Region handler for
 506           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 507           native firmware functions.  The driver installs the OpRegion
 508           handler if there is an HPQ5001 device or if the user supplies
 509           the "force" module parameter, e.g., with the "aml_nfw.force"
 510           kernel command line option.
 511
 512 source "drivers/sn/Kconfig"
 513
 514 config KEXEC
 515         bool "kexec system call (EXPERIMENTAL)"
 516         depends on EXPERIMENTAL && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 517         help
 518           kexec is a system call that implements the ability to shutdown your
 519           current kernel, and to start another kernel.  It is like a reboot
 520           but it is independent of the system firmware.   And like a reboot
 521           you can start any kernel with it, not just Linux.
 522
 523           The name comes from the similarity to the exec system call.
 524
 525           It is an ongoing process to be certain the hardware in a machine
 526           is properly shutdown, so do not be surprised if this code does not
 527           initially work for you.  It may help to enable device hotplugging
 528           support.  As of this writing the exact hardware interface is
 529           strongly in flux, so no good recommendation can be made.
 530
 531 config CRASH_DUMP
 532           bool "kernel crash dumps (EXPERIMENTAL)"
 533           depends on EXPERIMENTAL && IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 534           help
 535             Generate crash dump after being started by kexec.
 536
 537 source "drivers/firmware/Kconfig"
 538
 539 source "fs/Kconfig.binfmt"
 540
 541 endmenu
 542
 543 menu "Power management and ACPI"
 544
 545 source "kernel/power/Kconfig"
 546
 547 source "drivers/acpi/Kconfig"
 548
 549 if PM
 550
 551 source "arch/ia64/kernel/cpufreq/Kconfig"
 552
 553 endif
 554
 555 endmenu
 556
 557 if !IA64_HP_SIM
 558
 559 menu "Bus options (PCI, PCMCIA)"
 560
 561 config PCI
 562         bool "PCI support"
 563         help
 564           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 565           here unless you are using a simulator without PCI support.
 566
 567 config PCI_DOMAINS
 568         def_bool PCI
 569
 570 config PCI_SYSCALL
 571         def_bool PCI
 572
 573 source "drivers/pci/pcie/Kconfig"
 574
 575 source "drivers/pci/Kconfig"
 576
 577 source "drivers/pci/hotplug/Kconfig"
 578
 579 source "drivers/pcmcia/Kconfig"
 580
 581 endmenu
 582
 583 endif
 584
 585 source "net/Kconfig"
 586
 587 source "drivers/Kconfig"
 588
 589 config MSPEC
 590         tristate "Memory special operations driver"
 591         depends on IA64
 592         select IA64_UNCACHED_ALLOCATOR
 593         help
 594           If you have an ia64 and you want to enable memory special
 595           operations support (formerly known as fetchop), say Y here,
 596           otherwise say N.
 597
 598 source "fs/Kconfig"
 599
 600 source "lib/Kconfig"
 601
 602 #
 603 # Use the generic interrupt handling code in kernel/irq/:
 604 #
 605 config GENERIC_HARDIRQS
 606         bool
 607         default y
 608
 609 config GENERIC_IRQ_PROBE
 610         bool
 611         default y
 612
 613 config GENERIC_PENDING_IRQ
 614         bool
 615         depends on GENERIC_HARDIRQS && SMP
 616         default y
 617
 618 config IRQ_PER_CPU
 619         bool
 620         default y
 621
 622 source "arch/ia64/hp/sim/Kconfig"
 623
 624 source "arch/ia64/Kconfig.debug"
 625
 626 source "security/Kconfig"
 627
 628 source "crypto/Kconfig"