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         default y
  15         help
  16           The Itanium Processor Family is Intel's 64-bit successor to
  17           the 32-bit X86 line.  The IA-64 Linux project has a home
  18           page at <http://www.linuxia64.org/> and a mailing list at
  19           <linux-ia64@vger.kernel.org>.
  20
  21 config 64BIT
  22         bool
  23         default y
  24
  25 config MMU
  26         bool
  27         default y
  28
  29 config SWIOTLB
  30        bool
  31        default y
  32
  33 config RWSEM_XCHGADD_ALGORITHM
  34         bool
  35         default y
  36
  37 config GENERIC_CALIBRATE_DELAY
  38         bool
  39         default y
  40
  41 config TIME_INTERPOLATION
  42         bool
  43         default y
  44
  45 config EFI
  46         bool
  47         default y
  48
  49 config GENERIC_IOMAP
  50         bool
  51         default y
  52
  53 config SCHED_NO_NO_OMIT_FRAME_POINTER
  54         bool
  55         default y
  56
  57 config IA64_UNCACHED_ALLOCATOR
  58         bool
  59         select GENERIC_ALLOCATOR
  60
  61 choice
  62         prompt "System type"
  63         default IA64_GENERIC
  64
  65 config IA64_GENERIC
  66         bool "generic"
  67         select ACPI
  68         select NUMA
  69         select ACPI_NUMA
  70         help
  71           This selects the system type of your hardware.  A "generic" kernel
  72           will run on any supported IA-64 system.  However, if you configure
  73           a kernel for your specific system, it will be faster and smaller.
  74
  75           generic               For any supported IA-64 system
  76           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
  77           HP-zx1/sx1000         For HP systems
  78           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
  79           SGI-SN2               For SGI Altix systems
  80           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
  81
  82           If you don't know what to do, choose "generic".
  83
  84 config IA64_DIG
  85         bool "DIG-compliant"
  86
  87 config IA64_HP_ZX1
  88         bool "HP-zx1/sx1000"
  89         help
  90           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
  91           support for the HP I/O MMU.
  92
  93 config IA64_HP_ZX1_SWIOTLB
  94         bool "HP-zx1/sx1000 with software I/O TLB"
  95         help
  96           Build a kernel that runs on HP zx1 and sx1000 systems even when they
  97           have broken PCI devices which cannot DMA to full 32 bits.  Apart
  98           from support for the HP I/O MMU, this includes support for the software
  99           I/O TLB, which allows supporting the broken devices at the expense of
 100           wasting some kernel memory (about 2MB by default).
 101
 102 config IA64_SGI_SN2
 103         bool "SGI-SN2"
 104         help
 105           Selecting this option will optimize the kernel for use on sn2 based
 106           systems, but the resulting kernel binary will not run on other
 107           types of ia64 systems.  If you have an SGI Altix system, it's safe
 108           to select this option.  If in doubt, select ia64 generic support
 109           instead.
 110
 111 config IA64_HP_SIM
 112         bool "Ski-simulator"
 113
 114 endchoice
 115
 116 choice
 117         prompt "Processor type"
 118         default ITANIUM
 119
 120 config ITANIUM
 121         bool "Itanium"
 122         help
 123           Select your IA-64 processor type.  The default is Itanium.
 124           This choice is safe for all IA-64 systems, but may not perform
 125           optimally on systems with, say, Itanium 2 or newer processors.
 126
 127 config MCKINLEY
 128         bool "Itanium 2"
 129         help
 130           Select this to configure for an Itanium 2 (McKinley) processor.
 131
 132 endchoice
 133
 134 choice
 135         prompt "Kernel page size"
 136         default IA64_PAGE_SIZE_16KB
 137
 138 config IA64_PAGE_SIZE_4KB
 139         bool "4KB"
 140         help
 141           This lets you select the page size of the kernel.  For best IA-64
 142           performance, a page size of 8KB or 16KB is recommended.  For best
 143           IA-32 compatibility, a page size of 4KB should be selected (the vast
 144           majority of IA-32 binaries work perfectly fine with a larger page
 145           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 146           be selected.
 147
 148           4KB                For best IA-32 compatibility
 149           8KB                For best IA-64 performance
 150           16KB               For best IA-64 performance
 151           64KB               Requires Itanium 2 or newer processor.
 152
 153           If you don't know what to do, choose 16KB.
 154
 155 config IA64_PAGE_SIZE_8KB
 156         bool "8KB"
 157
 158 config IA64_PAGE_SIZE_16KB
 159         bool "16KB"
 160
 161 config IA64_PAGE_SIZE_64KB
 162         depends on !ITANIUM
 163         bool "64KB"
 164
 165 endchoice
 166
 167 source kernel/Kconfig.hz
 168
 169 config IA64_BRL_EMU
 170         bool
 171         depends on ITANIUM
 172         default y
 173
 174 # align cache-sensitive data to 128 bytes
 175 config IA64_L1_CACHE_SHIFT
 176         int
 177         default "7" if MCKINLEY
 178         default "6" if ITANIUM
 179
 180 # align cache-sensitive data to 64 bytes
 181 config IA64_CYCLONE
 182         bool "Cyclone (EXA) Time Source support"
 183         help
 184           Say Y here to enable support for IBM EXA Cyclone time source.
 185           If you're unsure, answer N.
 186
 187 config IOSAPIC
 188         bool
 189         depends on !IA64_HP_SIM
 190         default y
 191
 192 config IA64_SGI_SN_XP
 193         tristate "Support communication between SGI SSIs"
 194         select IA64_UNCACHED_ALLOCATOR
 195         help
 196           An SGI machine can be divided into multiple Single System
 197           Images which act independently of each other and have
 198           hardware based memory protection from the others.  Enabling
 199           this feature will allow for direct communication between SSIs
 200           based on a network adapter and DMA messaging.
 201
 202 config FORCE_MAX_ZONEORDER
 203         int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
 204         range 11 17  if !HUGETLB_PAGE
 205         default "17" if HUGETLB_PAGE
 206         default "11"
 207
 208 config SMP
 209         bool "Symmetric multi-processing support"
 210         help
 211           This enables support for systems with more than one CPU. If you have
 212           a system with only one CPU, say N.  If you have a system with more
 213           than one CPU, say Y.
 214
 215           If you say N here, the kernel will run on single and multiprocessor
 216           systems, but will use only one CPU of a multiprocessor system.  If
 217           you say Y here, the kernel will run on many, but not all,
 218           single processor systems.  On a single processor system, the kernel
 219           will run faster if you say N here.
 220
 221           See also the <file:Documentation/smp.txt> and the SMP-HOWTO
 222           available at <http://www.tldp.org/docs.html#howto>.
 223
 224           If you don't know what to do here, say N.
 225
 226 config NR_CPUS
 227         int "Maximum number of CPUs (2-1024)"
 228         range 2 1024
 229         depends on SMP
 230         default "64"
 231         help
 232           You should set this to the number of CPUs in your system, but
 233           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 234           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 235           than 64 will cause the use of a CPU mask array, causing a small
 236           performance hit.
 237
 238 config HOTPLUG_CPU
 239         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 240         depends on SMP && EXPERIMENTAL
 241         select HOTPLUG
 242         default n
 243         ---help---
 244           Say Y here to experiment with turning CPUs off and on.  CPUs
 245           can be controlled through /sys/devices/system/cpu/cpu#.
 246           Say N if you want to disable CPU hotplug.
 247
 248 config SCHED_SMT
 249         bool "SMT scheduler support"
 250         depends on SMP
 251         default off
 252         help
 253           Improves the CPU scheduler's decision making when dealing with
 254           Intel IA64 chips with MultiThreading at a cost of slightly increased
 255           overhead in some places. If unsure say N here.
 256
 257 config PREEMPT
 258         bool "Preemptible Kernel"
 259         help
 260           This option reduces the latency of the kernel when reacting to
 261           real-time or interactive events by allowing a low priority process to
 262           be preempted even if it is in kernel mode executing a system call.
 263           This allows applications to run more reliably even when the system is
 264           under load.
 265
 266           Say Y here if you are building a kernel for a desktop, embedded
 267           or real-time system.  Say N if you are unsure.
 268
 269 source "mm/Kconfig"
 270
 271 config ARCH_SELECT_MEMORY_MODEL
 272         def_bool y
 273
 274 config ARCH_DISCONTIGMEM_ENABLE
 275         def_bool y
 276         help
 277           Say Y to support efficient handling of discontiguous physical memory,
 278           for architectures which are either NUMA (Non-Uniform Memory Access)
 279           or have huge holes in the physical address space for other reasons.
 280           See <file:Documentation/vm/numa> for more.
 281
 282 config ARCH_FLATMEM_ENABLE
 283         def_bool y
 284
 285 config ARCH_SPARSEMEM_ENABLE
 286         def_bool y
 287         depends on ARCH_DISCONTIGMEM_ENABLE
 288
 289 config ARCH_DISCONTIGMEM_DEFAULT
 290         def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
 291         depends on ARCH_DISCONTIGMEM_ENABLE
 292
 293 config NUMA
 294         bool "NUMA support"
 295         depends on !IA64_HP_SIM && !FLATMEM
 296         default y if IA64_SGI_SN2
 297         help
 298           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 299           Access).  This option is for configuring high-end multiprocessor
 300           server systems.  If in doubt, say N.
 301
 302 # VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
 303 # VIRTUAL_MEM_MAP has been retained for historical reasons.
 304 config VIRTUAL_MEM_MAP
 305         bool "Virtual mem map"
 306         depends on !SPARSEMEM
 307         default y if !IA64_HP_SIM
 308         help
 309           Say Y to compile the kernel with support for a virtual mem map.
 310           This code also only takes effect if a memory hole of greater than
 311           1 Gb is found during boot.  You must turn this option on if you
 312           require the DISCONTIGMEM option for your machine. If you are
 313           unsure, say Y.
 314
 315 config HOLES_IN_ZONE
 316         bool
 317         default y if VIRTUAL_MEM_MAP
 318
 319 config HAVE_ARCH_EARLY_PFN_TO_NID
 320         def_bool y
 321         depends on NEED_MULTIPLE_NODES
 322
 323 config IA32_SUPPORT
 324         bool "Support for Linux/x86 binaries"
 325         help
 326           IA-64 processors can execute IA-32 (X86) instructions.  By
 327           saying Y here, the kernel will include IA-32 system call
 328           emulation support which makes it possible to transparently
 329           run IA-32 Linux binaries on an IA-64 Linux system.
 330           If in doubt, say Y.
 331
 332 config COMPAT
 333         bool
 334         depends on IA32_SUPPORT
 335         default y
 336
 337 config IA64_MCA_RECOVERY
 338         tristate "MCA recovery from errors other than TLB."
 339
 340 config PERFMON
 341         bool "Performance monitor support"
 342         help
 343           Selects whether support for the IA-64 performance monitor hardware
 344           is included in the kernel.  This makes some kernel data-structures a
 345           little bigger and slows down execution a bit, but it is generally
 346           a good idea to turn this on.  If you're unsure, say Y.
 347
 348 config IA64_PALINFO
 349         tristate "/proc/pal support"
 350         help
 351           If you say Y here, you are able to get PAL (Processor Abstraction
 352           Layer) information in /proc/pal.  This contains useful information
 353           about the processors in your systems, such as cache and TLB sizes
 354           and the PAL firmware version in use.
 355
 356           To use this option, you have to ensure that the "/proc file system
 357           support" (CONFIG_PROC_FS) is enabled, too.
 358
 359 source "drivers/firmware/Kconfig"
 360
 361 source "fs/Kconfig.binfmt"
 362
 363 endmenu
 364
 365 menu "Power management and ACPI"
 366
 367 source "kernel/power/Kconfig"
 368
 369 source "drivers/acpi/Kconfig"
 370
 371 if PM
 372
 373 source "arch/ia64/kernel/cpufreq/Kconfig"
 374
 375 endif
 376
 377 endmenu
 378
 379 if !IA64_HP_SIM
 380
 381 menu "Bus options (PCI, PCMCIA)"
 382
 383 config PCI
 384         bool "PCI support"
 385         help
 386           Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
 387           here unless you are using a simulator without PCI support.
 388
 389 config PCI_DOMAINS
 390         bool
 391         default PCI
 392
 393 source "drivers/pci/Kconfig"
 394
 395 source "drivers/pci/hotplug/Kconfig"
 396
 397 source "drivers/pcmcia/Kconfig"
 398
 399 endmenu
 400
 401 endif
 402
 403 source "net/Kconfig"
 404
 405 source "drivers/Kconfig"
 406
 407 source "fs/Kconfig"
 408
 409 source "lib/Kconfig"
 410
 411 #
 412 # Use the generic interrupt handling code in kernel/irq/:
 413 #
 414 config GENERIC_HARDIRQS
 415         bool
 416         default y
 417
 418 config GENERIC_IRQ_PROBE
 419         bool
 420         default y
 421
 422 config GENERIC_PENDING_IRQ
 423         bool
 424         depends on GENERIC_HARDIRQS && SMP
 425         default y
 426
 427 source "arch/ia64/hp/sim/Kconfig"
 428
 429 source "arch/ia64/oprofile/Kconfig"
 430
 431 source "arch/ia64/Kconfig.debug"
 432
 433 source "security/Kconfig"
 434
 435 source "crypto/Kconfig"