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 RWSEM_XCHGADD_ALGORITHM
  30         bool
  31         default y
  32
  33 config GENERIC_CALIBRATE_DELAY
  34         bool
  35         default y
  36
  37 config TIME_INTERPOLATION
  38         bool
  39         default y
  40
  41 config EFI
  42         bool
  43         default y
  44
  45 config GENERIC_IOMAP
  46         bool
  47         default y
  48
  49 choice
  50         prompt "System type"
  51         default IA64_GENERIC
  52
  53 config IA64_GENERIC
  54         bool "generic"
  55         select NUMA
  56         select ACPI_NUMA
  57         select VIRTUAL_MEM_MAP
  58         select DISCONTIGMEM
  59         help
  60           This selects the system type of your hardware.  A "generic" kernel
  61           will run on any supported IA-64 system.  However, if you configure
  62           a kernel for your specific system, it will be faster and smaller.
  63
  64           generic               For any supported IA-64 system
  65           DIG-compliant         For DIG ("Developer's Interface Guide") compliant systems
  66           HP-zx1/sx1000         For HP systems
  67           HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
  68           SGI-SN2               For SGI Altix systems
  69           Ski-simulator         For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
  70
  71           If you don't know what to do, choose "generic".
  72
  73 config IA64_DIG
  74         bool "DIG-compliant"
  75
  76 config IA64_HP_ZX1
  77         bool "HP-zx1/sx1000"
  78         help
  79           Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
  80           support for the HP I/O MMU.
  81
  82 config IA64_HP_ZX1_SWIOTLB
  83         bool "HP-zx1/sx1000 with software I/O TLB"
  84         help
  85           Build a kernel that runs on HP zx1 and sx1000 systems even when they
  86           have broken PCI devices which cannot DMA to full 32 bits.  Apart
  87           from support for the HP I/O MMU, this includes support for the software
  88           I/O TLB, which allows supporting the broken devices at the expense of
  89           wasting some kernel memory (about 2MB by default).
  90
  91 config IA64_SGI_SN2
  92         bool "SGI-SN2"
  93         help
  94           Selecting this option will optimize the kernel for use on sn2 based
  95           systems, but the resulting kernel binary will not run on other
  96           types of ia64 systems.  If you have an SGI Altix system, it's safe
  97           to select this option.  If in doubt, select ia64 generic support
  98           instead.
  99
 100 config IA64_HP_SIM
 101         bool "Ski-simulator"
 102
 103 endchoice
 104
 105 choice
 106         prompt "Processor type"
 107         default ITANIUM
 108
 109 config ITANIUM
 110         bool "Itanium"
 111         help
 112           Select your IA-64 processor type.  The default is Itanium.
 113           This choice is safe for all IA-64 systems, but may not perform
 114           optimally on systems with, say, Itanium 2 or newer processors.
 115
 116 config MCKINLEY
 117         bool "Itanium 2"
 118         help
 119           Select this to configure for an Itanium 2 (McKinley) processor.
 120
 121 endchoice
 122
 123 choice
 124         prompt "Kernel page size"
 125         default IA64_PAGE_SIZE_16KB
 126
 127 config IA64_PAGE_SIZE_4KB
 128         bool "4KB"
 129         help
 130           This lets you select the page size of the kernel.  For best IA-64
 131           performance, a page size of 8KB or 16KB is recommended.  For best
 132           IA-32 compatibility, a page size of 4KB should be selected (the vast
 133           majority of IA-32 binaries work perfectly fine with a larger page
 134           size).  For Itanium 2 or newer systems, a page size of 64KB can also
 135           be selected.
 136
 137           4KB                For best IA-32 compatibility
 138           8KB                For best IA-64 performance
 139           16KB               For best IA-64 performance
 140           64KB               Requires Itanium 2 or newer processor.
 141
 142           If you don't know what to do, choose 16KB.
 143
 144 config IA64_PAGE_SIZE_8KB
 145         bool "8KB"
 146
 147 config IA64_PAGE_SIZE_16KB
 148         bool "16KB"
 149
 150 config IA64_PAGE_SIZE_64KB
 151         depends on !ITANIUM
 152         bool "64KB"
 153
 154 endchoice
 155
 156 config IA64_BRL_EMU
 157         bool
 158         depends on ITANIUM
 159         default y
 160
 161 # align cache-sensitive data to 128 bytes
 162 config IA64_L1_CACHE_SHIFT
 163         int
 164         default "7" if MCKINLEY
 165         default "6" if ITANIUM
 166
 167 # align cache-sensitive data to 64 bytes
 168 config NUMA
 169         bool "NUMA support"
 170         depends on !IA64_HP_SIM
 171         default y if IA64_SGI_SN2
 172         select ACPI_NUMA
 173         help
 174           Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 175           Access).  This option is for configuring high-end multiprocessor
 176           server systems.  If in doubt, say N.
 177
 178 config VIRTUAL_MEM_MAP
 179         bool "Virtual mem map"
 180         default y if !IA64_HP_SIM
 181         help
 182           Say Y to compile the kernel with support for a virtual mem map.
 183           This code also only takes effect if a memory hole of greater than
 184           1 Gb is found during boot.  You must turn this option on if you
 185           require the DISCONTIGMEM option for your machine. If you are
 186           unsure, say Y.
 187
 188 config HOLES_IN_ZONE
 189         bool
 190         default y if VIRTUAL_MEM_MAP
 191
 192 config DISCONTIGMEM
 193         bool "Discontiguous memory support"
 194         depends on (IA64_DIG || IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB) && NUMA && VIRTUAL_MEM_MAP
 195         default y if (IA64_SGI_SN2 || IA64_GENERIC) && NUMA
 196         help
 197           Say Y to support efficient handling of discontiguous physical memory,
 198           for architectures which are either NUMA (Non-Uniform Memory Access)
 199           or have huge holes in the physical address space for other reasons.
 200           See <file:Documentation/vm/numa> for more.
 201
 202 config IA64_CYCLONE
 203         bool "Cyclone (EXA) Time Source support"
 204         help
 205           Say Y here to enable support for IBM EXA Cyclone time source.
 206           If you're unsure, answer N.
 207
 208 config IOSAPIC
 209         bool
 210         depends on !IA64_HP_SIM
 211         default y
 212
 213 config IA64_SGI_SN_SIM
 214         bool "SGI Medusa Simulator Support"
 215         depends on IA64_SGI_SN2
 216         help
 217           If you are compiling a kernel that will run under SGI's IA-64
 218           simulator (Medusa) then say Y, otherwise say N.
 219
 220 config FORCE_MAX_ZONEORDER
 221         int
 222         default "18"
 223
 224 config SMP
 225         bool "Symmetric multi-processing support"
 226         help
 227           This enables support for systems with more than one CPU. If you have
 228           a system with only one CPU, say N.  If you have a system with more
 229           than one CPU, say Y.
 230
 231           If you say N here, the kernel will run on single and multiprocessor
 232           systems, but will use only one CPU of a multiprocessor system.  If
 233           you say Y here, the kernel will run on many, but not all,
 234           single processor systems.  On a single processor system, the kernel
 235           will run faster if you say N here.
 236
 237           See also the <file:Documentation/smp.txt> and the SMP-HOWTO
 238           available at <http://www.tldp.org/docs.html#howto>.
 239
 240           If you don't know what to do here, say N.
 241
 242 config NR_CPUS
 243         int "Maximum number of CPUs (2-512)"
 244         range 2 512
 245         depends on SMP
 246         default "64"
 247         help
 248           You should set this to the number of CPUs in your system, but
 249           keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
 250           only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
 251           than 64 will cause the use of a CPU mask array, causing a small
 252           performance hit.
 253
 254 config HOTPLUG_CPU
 255         bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
 256         depends on SMP && EXPERIMENTAL
 257         select HOTPLUG
 258         default n
 259         ---help---
 260           Say Y here to experiment with turning CPUs off and on.  CPUs
 261           can be controlled through /sys/devices/system/cpu/cpu#.
 262           Say N if you want to disable CPU hotplug.
 263
 264 config PREEMPT
 265         bool "Preemptible Kernel"
 266         help
 267           This option reduces the latency of the kernel when reacting to
 268           real-time or interactive events by allowing a low priority process to
 269           be preempted even if it is in kernel mode executing a system call.
 270           This allows applications to run more reliably even when the system is
 271           under load.
 272
 273           Say Y here if you are building a kernel for a desktop, embedded
 274           or real-time system.  Say N if you are unsure.
 275
 276 config HAVE_DEC_LOCK
 277         bool
 278         depends on (SMP || PREEMPT)
 279         default y
 280
 281 config IA32_SUPPORT
 282         bool "Support for Linux/x86 binaries"
 283         help
 284           IA-64 processors can execute IA-32 (X86) instructions.  By
 285           saying Y here, the kernel will include IA-32 system call
 286           emulation support which makes it possible to transparently
 287           run IA-32 Linux binaries on an IA-64 Linux system.
 288           If in doubt, say Y.
 289
 290 config COMPAT
 291         bool
 292         depends on IA32_SUPPORT
 293         default y
 294
 295 config IA64_MCA_RECOVERY
 296         tristate "MCA recovery from errors other than TLB."
 297
 298 config PERFMON
 299         bool "Performance monitor support"
 300         help
 301           Selects whether support for the IA-64 performance monitor hardware
 302           is included in the kernel.  This makes some kernel data-structures a
 303           little bigger and slows down execution a bit, but it is generally
 304           a good idea to turn this on.  If you're unsure, say Y.
 305
 306 config IA64_PALINFO
 307         tristate "/proc/pal support"
 308         help
 309           If you say Y here, you are able to get PAL (Processor Abstraction
 310           Layer) information in /proc/pal.  This contains useful information
 311           about the processors in your systems, such as cache and TLB sizes
 312           and the PAL firmware version in use.
 313
 314           To use this option, you have to ensure that the "/proc file system
 315           support" (CONFIG_PROC_FS) is enabled, too.
 316
 317 config ACPI_DEALLOCATE_IRQ
 318         bool
 319         depends on IOSAPIC && EXPERIMENTAL
 320         default y
 321
 322 source "drivers/firmware/Kconfig"
 323
 324 source "fs/Kconfig.binfmt"
 325
 326 endmenu
 327
 328 menu "Power management and ACPI"
 329
 330 config PM
 331         bool "Power Management support"
 332         depends on IA64_GENERIC || IA64_DIG || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB
 333         default y
 334         help
 335           "Power Management" means that parts of your computer are shut
 336           off or put into a power conserving "sleep" mode if they are not
 337           being used.  There are two competing standards for doing this: APM
 338           and ACPI.  If you want to use either one, say Y here and then also
 339           to the requisite support below.
 340
 341           Power Management is most important for battery powered laptop
 342           computers; if you have a laptop, check out the Linux Laptop home
 343           page on the WWW at <http://www.linux-on-laptops.com/> and the
 344           Battery Powered Linux mini-HOWTO, available from
 345           <http://www.tldp.org/docs.html#howto>.
 346
 347           Note that, even if you say N here, Linux on the x86 architecture
 348           will issue the hlt instruction if nothing is to be done, thereby
 349           sending the processor to sleep and saving power.
 350
 351 config ACPI
 352         bool
 353         depends on !IA64_HP_SIM
 354         default y
 355
 356 if !IA64_HP_SIM
 357
 358 source "drivers/acpi/Kconfig"
 359
 360 endif
 361
 362 endmenu
 363
 364 if !IA64_HP_SIM
 365
 366 menu "Bus options (PCI, PCMCIA)"
 367
 368 config PCI
 369         bool "PCI support"
 370         help
 371           Find out whether you have a PCI motherboard. PCI is the name of a
 372           bus system, i.e. the way the CPU talks to the other stuff inside
 373           your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
 374           VESA. If you have PCI, say Y, otherwise N.
 375
 376           The PCI-HOWTO, available from
 377           <http://www.tldp.org/docs.html#howto>, contains valuable
 378           information about which PCI hardware does work under Linux and which
 379           doesn't.
 380
 381 config PCI_DOMAINS
 382         bool
 383         default PCI
 384
 385 source "drivers/pci/Kconfig"
 386
 387 source "drivers/pci/hotplug/Kconfig"
 388
 389 source "drivers/pcmcia/Kconfig"
 390
 391 endmenu
 392
 393 endif
 394
 395 source "drivers/Kconfig"
 396
 397 source "fs/Kconfig"
 398
 399 source "lib/Kconfig"
 400
 401 #
 402 # Use the generic interrupt handling code in kernel/irq/:
 403 #
 404 config GENERIC_HARDIRQS
 405         bool
 406         default y
 407
 408 config GENERIC_IRQ_PROBE
 409         bool
 410         default y
 411
 412 source "arch/ia64/hp/sim/Kconfig"
 413
 414 source "arch/ia64/oprofile/Kconfig"
 415
 416 source "arch/ia64/Kconfig.debug"
 417
 418 source "security/Kconfig"
 419
 420 source "crypto/Kconfig"