arch/ia64/Kconfig

   1 source "init/Kconfig"
   2
   3 source "kernel/Kconfig.freezer"
   4
   5 menu "Processor type and features"
   6
   7 config IA64
   8         bool
   9         select ARCH_MIGHT_HAVE_PC_PARPORT
  10         select ARCH_MIGHT_HAVE_PC_SERIO
  11         select PCI if (!IA64_HP_SIM)
  12         select ACPI if (!IA64_HP_SIM)
  13         select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI
  14         select PM if (!IA64_HP_SIM)
  15         select HAVE_UNSTABLE_SCHED_CLOCK
  16         select HAVE_IDE
  17         select HAVE_OPROFILE
  18         select HAVE_KPROBES
  19         select HAVE_KRETPROBES
  20         select HAVE_FTRACE_MCOUNT_RECORD
  21         select HAVE_DYNAMIC_FTRACE if (!ITANIUM)
  22         select HAVE_FUNCTION_TRACER
  23         select HAVE_DMA_ATTRS
  24         select HAVE_KVM
  25         select TTY
  26         select HAVE_ARCH_TRACEHOOK
  27         select HAVE_DMA_API_DEBUG
  28         select HAVE_MEMBLOCK
  29         select HAVE_MEMBLOCK_NODE_MAP
  30         select HAVE_VIRT_CPU_ACCOUNTING
  31         select ARCH_HAS_SG_CHAIN
  32         select VIRT_TO_BUS
  33         select ARCH_DISCARD_MEMBLOCK
  34         select GENERIC_IRQ_PROBE
  35         select GENERIC_PENDING_IRQ if SMP
  36         select GENERIC_IRQ_SHOW
  37         select GENERIC_IRQ_LEGACY
  38         select ARCH_WANT_OPTIONAL_GPIOLIB
  39         select ARCH_HAVE_NMI_SAFE_CMPXCHG
  40         select GENERIC_IOMAP
  41         select GENERIC_SMP_IDLE_THREAD
  42         select ARCH_INIT_TASK
  43         select ARCH_TASK_STRUCT_ALLOCATOR
  44         select ARCH_THREAD_INFO_ALLOCATOR
  45         select ARCH_CLOCKSOURCE_DATA
  46         select GENERIC_TIME_VSYSCALL_OLD
  47         select SYSCTL_ARCH_UNALIGN_NO_WARN
  48         select HAVE_MOD_ARCH_SPECIFIC
  49         select MODULES_USE_ELF_RELA
  50         select ARCH_USE_CMPXCHG_LOCKREF
  51         select HAVE_ARCH_AUDITSYSCALL
  52         default y
  53         help
  54           The Itanium Processor Family is Intel's 64-bit successor to
  55           the 32-bit X86 line.  The IA-64 Linux project has a home
  56           page at <http://www.linuxia64.org/> and a mailing list at
  57           <linux-ia64@vger.kernel.org>.
  58
  59 config 64BIT
  60         bool
  61         select ATA_NONSTANDARD if ATA
  62         default y
  63
  64 config ZONE_DMA
  65         def_bool y
  66         depends on !IA64_SGI_SN2
  67
  68 config QUICKLIST
  69         bool
  70         default y
  71
  72 config MMU
  73         bool
  74         default y
  75
  76 config ARCH_DMA_ADDR_T_64BIT
  77         def_bool y
  78
  79 config NEED_DMA_MAP_STATE
  80         def_bool y
  81
  82 config NEED_SG_DMA_LENGTH
  83         def_bool y
  84
  85 config SWIOTLB
  86        bool
  87
  88 config STACKTRACE_SUPPORT
  89         def_bool y
  90
  91 config GENERIC_LOCKBREAK
  92         def_bool n
  93
  94 config RWSEM_XCHGADD_ALGORITHM
  95         bool
  96         default y
  97
  98 config HUGETLB_PAGE_SIZE_VARIABLE
  99         bool
 100         depends on HUGETLB_PAGE
 101         default y
 102
 103 config GENERIC_CALIBRATE_DELAY
 104         bool
 105         default y
 106
 107 config HAVE_SETUP_PER_CPU_AREA
 108         def_bool y
 109
 110 config DMI
 111         bool
 112         default y
 113         select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
 114
 115 config EFI
 116         bool
 117         select UCS2_STRING
 118         default y
 119
 120 config SCHED_OMIT_FRAME_POINTER
 121         bool
 122         default y
 123
 124 config IA64_UNCACHED_ALLOCATOR
 125         bool
 126         select GENERIC_ALLOCATOR
 127
 128 config ARCH_USES_PG_UNCACHED
 129         def_bool y
 130         depends on IA64_UNCACHED_ALLOCATOR
 131
 132 config AUDIT_ARCH
 133         bool
 134         default y
 135
 136 menuconfig PARAVIRT_GUEST
 137         bool "Paravirtualized guest support"
 138         depends on BROKEN
 139         help
 140           Say Y here to get to see options related to running Linux under
 141           various hypervisors.  This option alone does not add any kernel code.
 142
 143           If you say N, all options in this submenu will be skipped and disabled.
 144
 145 if PARAVIRT_GUEST
 146
 147 config PARAVIRT
 148         bool "Enable paravirtualization code"
 149         depends on PARAVIRT_GUEST
 150         default y
 151         help
 152           This changes the kernel so it can modify itself when it is run
 153           under a hypervisor, potentially improving performance significantly
 154           over full virtualization.  However, when run without a hypervisor
 155           the kernel is theoretically slower and slightly larger.
 156
 157 endif
 158
 159 choice
 160         prompt "System type"
 161         default IA64_GENERIC
 162
 163 config IA64_GENERIC
 164         bool "generic"
 165         select NUMA
 166         select ACPI_NUMA
 167         select SWIOTLB
 168         select PCI_MSI
 169         help
 170           This selects the system type of your hardware.  A "generic" kernel
 171           will run on any supported IA-64 system.  However, if you configure
 172           a kernel for your specific system, it will be faster and smaller.
 173
 174           generic               For any supported IA-64 system
 175           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
 176           DIG+Intel+IOMMU       For DIG systems with Intel IOMMU
 177           HP-zx1/sx1000         For HP systems
 178           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
 179           SGI-SN2               For SGI Altix systems
 180           SGI-UV                For SGI UV systems
 181           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
 182
 183           If you don't know what to do, choose "generic".
 184
 185 config IA64_DIG
 186         bool "DIG-compliant"
 187         select SWIOTLB
 188
 189 config IA64_DIG_VTD
 190         bool "DIG+Intel+IOMMU"
 191         select INTEL_IOMMU
 192         select PCI_MSI
 193
 194 config IA64_HP_ZX1
 195         bool "HP-zx1/sx1000"
 196         help
 197           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
 198           support for the HP I/O MMU.
 199
 200 config IA64_HP_ZX1_SWIOTLB
 201         bool "HP-zx1/sx1000 with software I/O TLB"
 202         select SWIOTLB
 203         help
 204           Build a kernel that runs on HP zx1 and sx1000 systems even when they
 205           have broken PCI devices which cannot DMA to full 32 bits.  Apart
 206           from support for the HP I/O MMU, this includes support for the software
 207           I/O TLB, which allows supporting the broken devices at the expense of
 208           wasting some kernel memory (about 2MB by default).
 209
 210 config IA64_SGI_SN2
 211         bool "SGI-SN2"
 212         select NUMA
 213         select ACPI_NUMA
 214         help
 215           Selecting this option will optimize the kernel for use on sn2 based
 216           systems, but the resulting kernel binary will not run on other
 217           types of ia64 systems.  If you have an SGI Altix system, it's safe
 218           to select this option.  If in doubt, select ia64 generic support
 219           instead.
 220
 221 config IA64_SGI_UV
 222         bool "SGI-UV"
 223         select NUMA
 224         select ACPI_NUMA
 225         select SWIOTLB
 226         help
 227           Selecting this option will optimize the kernel for use on UV based
 228           systems, but the resulting kernel binary will not run on other
 229           types of ia64 systems.  If you have an SGI UV system, it's safe
 230           to select this option.  If in doubt, select ia64 generic support
 231           instead.
 232
 233 config IA64_HP_SIM
 234         bool "Ski-simulator"
 235         select SWIOTLB
 236
 237 endchoice
 238
 239 choice
 240         prompt "Processor type"
 241         default ITANIUM
 242
 243 config ITANIUM
 244         bool "Itanium"
 245         help
 246           Select your IA-64 processor type.  The default is Itanium.
 247           This choice is safe for all IA-64 systems, but may not perform
 248           optimally on systems with, say, Itanium 2 or newer processors.
 249
 250 config MCKINLEY
 251         bool "Itanium 2"
 252         help
 253           Select this to configure for an Itanium 2 (McKinley) processor.
 254
 255 endchoice
 256
 257 choice
 258         prompt "Kernel page size"
 259         default IA64_PAGE_SIZE_16KB
 260
 261 config IA64_PAGE_SIZE_4KB
 262         bool "4KB"
 263         help
 264           This lets you select the page size of the kernel.  For best IA-64
 265           performance, a page size of 8KB or 16KB is recommended.  For best
 266           IA-32 compatibility, a page size of 4KB should be selected (the vast
 267           majority of IA-32 binaries work perfectly fine with a larger page
 268           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 269           be selected.
 270
 271           4KB                For best IA-32 compatibility
 272           8KB                For best IA-64 performance
 273           16KB               For best IA-64 performance
 274           64KB               Requires Itanium 2 or newer processor.
 275
 276           If you don't know what to do, choose 16KB.
 277
 278 config IA64_PAGE_SIZE_8KB
 279         bool "8KB"
 280
 281 config IA64_PAGE_SIZE_16KB
 282         bool "16KB"
 283
 284 config IA64_PAGE_SIZE_64KB
 285         depends on !ITANIUM
 286         bool "64KB"
 287
 288 endchoice
 289
 290 choice
 291         prompt "Page Table Levels"
 292         default PGTABLE_3
 293
 294 config PGTABLE_3
 295         bool "3 Levels"
 296
 297 config PGTABLE_4
 298         depends on !IA64_PAGE_SIZE_64KB
 299         bool "4 Levels"
 300
 301 endchoice
 302
 303 if IA64_HP_SIM
 304 config HZ
 305         default 32
 306 endif
 307
 308 if !IA64_HP_SIM
 309 source kernel/Kconfig.hz
 310 endif
 311
 312 config IA64_BRL_EMU
 313         bool
 314         depends on ITANIUM
 315         default y
 316
 317 # align cache-sensitive data to 128 bytes
 318 config IA64_L1_CACHE_SHIFT
 319         int
 320         default "7" if MCKINLEY
 321         default "6" if ITANIUM
 322
 323 config IA64_CYCLONE
 324         bool "Cyclone (EXA) Time Source support"
 325         help
 326           Say Y here to enable support for IBM EXA Cyclone time source.
 327           If you're unsure, answer N.
 328
 329 config IOSAPIC
 330         bool
 331         depends on !IA64_HP_SIM
 332         default y
 333
 334 config FORCE_MAX_ZONEORDER
 335         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 336         range 11 17  if !HUGETLB_PAGE
 337         default "17" if HUGETLB_PAGE
 338         default "11"
 339
 340 config SMP
 341         bool "Symmetric multi-processing support"
 342         help
 343           This enables support for systems with more than one CPU. If you have
 344           a system with only one CPU, say N.  If you have a system with more
 345           than one CPU, say Y.
 346
 347           If you say N here, the kernel will run on single and multiprocessor
 348           systems, but will use only one CPU of a multiprocessor system.  If
 349           you say Y here, the kernel will run on many, but not all,
 350           single processor systems.  On a single processor system, the kernel
 351           will run faster if you say N here.
 352
 353           See also the SMP-HOWTO available at
 354           <http://www.tldp.org/docs.html#howto>.
 355
 356           If you don't know what to do here, say N.
 357
 358 config NR_CPUS
 359         int "Maximum number of CPUs (2-4096)"
 360         range 2 4096
 361         depends on SMP
 362         default "4096"
 363         help
 364           You should set this to the number of CPUs in your system, but
 365           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 366           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 367           than 64 will cause the use of a CPU mask array, causing a small
 368           performance hit.
 369
 370 config HOTPLUG_CPU
 371         bool "Support for hot-pluggable CPUs"
 372         depends on SMP
 373         default n
 374         ---help---
 375           Say Y here to experiment with turning CPUs off and on.  CPUs
 376           can be controlled through /sys/devices/system/cpu/cpu#.
 377           Say N if you want to disable CPU hotplug.
 378
 379 config ARCH_ENABLE_MEMORY_HOTPLUG
 380         def_bool y
 381
 382 config ARCH_ENABLE_MEMORY_HOTREMOVE
 383         def_bool y
 384
 385 config SCHED_SMT
 386         bool "SMT scheduler support"
 387         depends on SMP
 388         help
 389           Improves the CPU scheduler's decision making when dealing with
 390           Intel IA64 chips with MultiThreading at a cost of slightly increased
 391           overhead in some places. If unsure say N here.
 392
 393 config PERMIT_BSP_REMOVE
 394         bool "Support removal of Bootstrap Processor"
 395         depends on HOTPLUG_CPU
 396         default n
 397         ---help---
 398         Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
 399         support.
 400
 401 config FORCE_CPEI_RETARGET
 402         bool "Force assumption that CPEI can be re-targeted"
 403         depends on PERMIT_BSP_REMOVE
 404         default n
 405         ---help---
 406         Say Y if you need to force the assumption that CPEI can be re-targeted to
 407         any cpu in the system. This hint is available via ACPI 3.0 specifications.
 408         Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
 409         This option it useful to enable this feature on older BIOS's as well.
 410         You can also enable this by using boot command line option force_cpei=1.
 411
 412 source "kernel/Kconfig.preempt"
 413
 414 source "mm/Kconfig"
 415
 416 config ARCH_SELECT_MEMORY_MODEL
 417         def_bool y
 418
 419 config ARCH_DISCONTIGMEM_ENABLE
 420         def_bool y
 421         help
 422           Say Y to support efficient handling of discontiguous physical memory,
 423           for architectures which are either NUMA (Non-Uniform Memory Access)
 424           or have huge holes in the physical address space for other reasons.
 425           See <file:Documentation/vm/numa> for more.
 426
 427 config ARCH_FLATMEM_ENABLE
 428         def_bool y
 429
 430 config ARCH_SPARSEMEM_ENABLE
 431         def_bool y
 432         depends on ARCH_DISCONTIGMEM_ENABLE
 433         select SPARSEMEM_VMEMMAP_ENABLE
 434
 435 config ARCH_DISCONTIGMEM_DEFAULT
 436         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 437         depends on ARCH_DISCONTIGMEM_ENABLE
 438
 439 config NUMA
 440         bool "NUMA support"
 441         depends on !IA64_HP_SIM && !FLATMEM
 442         default y if IA64_SGI_SN2
 443         select ACPI_NUMA if ACPI
 444         help
 445           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 446           Access).  This option is for configuring high-end multiprocessor
 447           server systems.  If in doubt, say N.
 448
 449 config NODES_SHIFT
 450         int "Max num nodes shift(3-10)"
 451         range 3 10
 452         default "10"
 453         depends on NEED_MULTIPLE_NODES
 454         help
 455           This option specifies the maximum number of nodes in your SSI system.
 456           MAX_NUMNODES will be 2^(This value).
 457           If in doubt, use the default.
 458
 459 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 460 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 461 config VIRTUAL_MEM_MAP
 462         bool "Virtual mem map"
 463         depends on !SPARSEMEM
 464         default y if !IA64_HP_SIM
 465         help
 466           Say Y to compile the kernel with support for a virtual mem map.
 467           This code also only takes effect if a memory hole of greater than
 468           1 Gb is found during boot.  You must turn this option on if you
 469           require the DISCONTIGMEM option for your machine. If you are
 470           unsure, say Y.
 471
 472 config HOLES_IN_ZONE
 473         bool
 474         default y if VIRTUAL_MEM_MAP
 475
 476 config HAVE_ARCH_EARLY_PFN_TO_NID
 477         def_bool NUMA && SPARSEMEM
 478
 479 config HAVE_ARCH_NODEDATA_EXTENSION
 480         def_bool y
 481         depends on NUMA
 482
 483 config USE_PERCPU_NUMA_NODE_ID
 484         def_bool y
 485         depends on NUMA
 486
 487 config HAVE_MEMORYLESS_NODES
 488         def_bool NUMA
 489
 490 config ARCH_PROC_KCORE_TEXT
 491         def_bool y
 492         depends on PROC_KCORE
 493
 494 config IA64_MCA_RECOVERY
 495         tristate "MCA recovery from errors other than TLB."
 496
 497 config PERFMON
 498         bool "Performance monitor support"
 499         help
 500           Selects whether support for the IA-64 performance monitor hardware
 501           is included in the kernel.  This makes some kernel data-structures a
 502           little bigger and slows down execution a bit, but it is generally
 503           a good idea to turn this on.  If you're unsure, say Y.
 504
 505 config IA64_PALINFO
 506         tristate "/proc/pal support"
 507         help
 508           If you say Y here, you are able to get PAL (Processor Abstraction
 509           Layer) information in /proc/pal.  This contains useful information
 510           about the processors in your systems, such as cache and TLB sizes
 511           and the PAL firmware version in use.
 512
 513           To use this option, you have to ensure that the "/proc file system
 514           support" (CONFIG_PROC_FS) is enabled, too.
 515
 516 config IA64_MC_ERR_INJECT
 517         tristate "MC error injection support"
 518         help
 519           Adds support for MC error injection. If enabled, the kernel
 520           will provide a sysfs interface for user applications to
 521           call MC error injection PAL procedures to inject various errors.
 522           This is a useful tool for MCA testing.
 523
 524           If you're unsure, do not select this option.
 525
 526 config SGI_SN
 527         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)
 528
 529 config IA64_ESI
 530         bool "ESI (Extensible SAL Interface) support"
 531         help
 532           If you say Y here, support is built into the kernel to
 533           make ESI calls.  ESI calls are used to support vendor-specific
 534           firmware extensions, such as the ability to inject memory-errors
 535           for test-purposes.  If you're unsure, say N.
 536
 537 config IA64_HP_AML_NFW
 538         bool "Support ACPI AML calls to native firmware"
 539         help
 540           This driver installs a global ACPI Operation Region handler for
 541           region 0xA1.  AML methods can use this OpRegion to call arbitrary
 542           native firmware functions.  The driver installs the OpRegion
 543           handler if there is an HPQ5001 device or if the user supplies
 544           the "force" module parameter, e.g., with the "aml_nfw.force"
 545           kernel command line option.
 546
 547 source "drivers/sn/Kconfig"
 548
 549 config KEXEC
 550         bool "kexec system call"
 551         depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 552         help
 553           kexec is a system call that implements the ability to shutdown your
 554           current kernel, and to start another kernel.  It is like a reboot
 555           but it is independent of the system firmware.   And like a reboot
 556           you can start any kernel with it, not just Linux.
 557
 558           The name comes from the similarity to the exec system call.
 559
 560           It is an ongoing process to be certain the hardware in a machine
 561           is properly shutdown, so do not be surprised if this code does not
 562           initially work for you.  As of this writing the exact hardware
 563           interface is strongly in flux, so no good recommendation can be
 564           made.
 565
 566 config CRASH_DUMP
 567           bool "kernel crash dumps"
 568           depends on IA64_MCA_RECOVERY && !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
 569           help
 570             Generate crash dump after being started by kexec.
 571
 572 source "drivers/firmware/Kconfig"
 573
 574 source "fs/Kconfig.binfmt"
 575
 576 endmenu
 577
 578 menu "Power management and ACPI options"
 579
 580 source "kernel/power/Kconfig"
 581
 582 source "drivers/acpi/Kconfig"
 583
 584 if PM
 585 menu "CPU Frequency scaling"
 586 source "drivers/cpufreq/Kconfig"
 587 endmenu
 588 endif
 589
 590 endmenu
 591
 592 if !IA64_HP_SIM
 593
 594 menu "Bus options (PCI, PCMCIA)"
 595
 596 config PCI
 597         bool "PCI support"
 598         help
 599           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 600           here unless you are using a simulator without PCI support.
 601
 602 config PCI_DOMAINS
 603         def_bool PCI
 604
 605 config PCI_SYSCALL
 606         def_bool PCI
 607
 608 source "drivers/pci/pcie/Kconfig"
 609
 610 source "drivers/pci/Kconfig"
 611
 612 source "drivers/pci/hotplug/Kconfig"
 613
 614 source "drivers/pcmcia/Kconfig"
 615
 616 endmenu
 617
 618 endif
 619
 620 source "net/Kconfig"
 621
 622 source "drivers/Kconfig"
 623
 624 source "arch/ia64/hp/sim/Kconfig"
 625
 626 config MSPEC
 627         tristate "Memory special operations driver"
 628         depends on IA64
 629         select IA64_UNCACHED_ALLOCATOR
 630         help
 631           If you have an ia64 and you want to enable memory special
 632           operations support (formerly known as fetchop), say Y here,
 633           otherwise say N.
 634
 635 source "fs/Kconfig"
 636
 637 source "arch/ia64/Kconfig.debug"
 638
 639 source "security/Kconfig"
 640
 641 source "crypto/Kconfig"
 642
 643 source "arch/ia64/kvm/Kconfig"
 644
 645 source "lib/Kconfig"
 646
 647 config IOMMU_HELPER
 648         def_bool (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC || SWIOTLB)