Kconfig 12.5 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

mainmenu "IA-64 Linux Kernel Configuration"

source "init/Kconfig"

menu "Processor type and features"

config IA64
	bool
	default y
	help
	  The Itanium Processor Family is Intel's 64-bit successor to
	  the 32-bit X86 line.  The IA-64 Linux project has a home
	  page at <http://www.linuxia64.org/> and a mailing list at
	  <linux-ia64@vger.kernel.org>.

config 64BIT
	bool
	default y

config MMU
	bool
	default y

29 30 31 32
config SWIOTLB
       bool
       default y

L
Linus Torvalds 已提交
33 34 35 36 37 38 39 40 41 42 43 44
config RWSEM_XCHGADD_ALGORITHM
	bool
	default y

config GENERIC_CALIBRATE_DELAY
	bool
	default y

config TIME_INTERPOLATION
	bool
	default y

M
Matt Domsch 已提交
45 46 47 48
config DMI
	bool
	default y

L
Linus Torvalds 已提交
49 50 51 52 53 54 55 56
config EFI
	bool
	default y

config GENERIC_IOMAP
	bool
	default y

57 58 59 60
config SCHED_NO_NO_OMIT_FRAME_POINTER
	bool
	default y

J
Jes Sorensen 已提交
61 62 63 64
config IA64_UNCACHED_ALLOCATOR
	bool
	select GENERIC_ALLOCATOR

65
config DMA_IS_DMA32
66 67 68
	bool
	default y

L
Linus Torvalds 已提交
69 70 71 72 73 74
choice
	prompt "System type"
	default IA64_GENERIC

config IA64_GENERIC
	bool "generic"
75
	select ACPI
L
Linus Torvalds 已提交
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174
	select NUMA
	select ACPI_NUMA
	help
	  This selects the system type of your hardware.  A "generic" kernel
	  will run on any supported IA-64 system.  However, if you configure
	  a kernel for your specific system, it will be faster and smaller.

	  generic		For any supported IA-64 system
	  DIG-compliant		For DIG ("Developer's Interface Guide") compliant systems
	  HP-zx1/sx1000		For HP systems
	  HP-zx1/sx1000+swiotlb	For HP systems with (broken) DMA-constrained devices.
	  SGI-SN2		For SGI Altix systems
	  Ski-simulator		For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>

	  If you don't know what to do, choose "generic".

config IA64_DIG
	bool "DIG-compliant"

config IA64_HP_ZX1
	bool "HP-zx1/sx1000"
	help
	  Build a kernel that runs on HP zx1 and sx1000 systems.  This adds
	  support for the HP I/O MMU.

config IA64_HP_ZX1_SWIOTLB
	bool "HP-zx1/sx1000 with software I/O TLB"
	help
	  Build a kernel that runs on HP zx1 and sx1000 systems even when they
	  have broken PCI devices which cannot DMA to full 32 bits.  Apart
	  from support for the HP I/O MMU, this includes support for the software
	  I/O TLB, which allows supporting the broken devices at the expense of
	  wasting some kernel memory (about 2MB by default).

config IA64_SGI_SN2
	bool "SGI-SN2"
	help
	  Selecting this option will optimize the kernel for use on sn2 based
	  systems, but the resulting kernel binary will not run on other
	  types of ia64 systems.  If you have an SGI Altix system, it's safe
	  to select this option.  If in doubt, select ia64 generic support
	  instead.

config IA64_HP_SIM
	bool "Ski-simulator"

endchoice

choice
	prompt "Processor type"
	default ITANIUM

config ITANIUM
	bool "Itanium"
	help
	  Select your IA-64 processor type.  The default is Itanium.
	  This choice is safe for all IA-64 systems, but may not perform
	  optimally on systems with, say, Itanium 2 or newer processors.

config MCKINLEY
	bool "Itanium 2"
	help
	  Select this to configure for an Itanium 2 (McKinley) processor.

endchoice

choice
	prompt "Kernel page size"
	default IA64_PAGE_SIZE_16KB

config IA64_PAGE_SIZE_4KB
	bool "4KB"
	help
	  This lets you select the page size of the kernel.  For best IA-64
	  performance, a page size of 8KB or 16KB is recommended.  For best
	  IA-32 compatibility, a page size of 4KB should be selected (the vast
	  majority of IA-32 binaries work perfectly fine with a larger page
	  size).  For Itanium 2 or newer systems, a page size of 64KB can also
	  be selected.

	  4KB                For best IA-32 compatibility
	  8KB                For best IA-64 performance
	  16KB               For best IA-64 performance
	  64KB               Requires Itanium 2 or newer processor.

	  If you don't know what to do, choose 16KB.

config IA64_PAGE_SIZE_8KB
	bool "8KB"

config IA64_PAGE_SIZE_16KB
	bool "16KB"

config IA64_PAGE_SIZE_64KB
	depends on !ITANIUM
	bool "64KB"

endchoice

R
Robin Holt 已提交
175 176 177 178 179 180 181 182 183 184 185 186 187
choice
	prompt "Page Table Levels"
	default PGTABLE_3

config PGTABLE_3
	bool "3 Levels"

config PGTABLE_4
	depends on !IA64_PAGE_SIZE_64KB
	bool "4 Levels"

endchoice

188 189
source kernel/Kconfig.hz

L
Linus Torvalds 已提交
190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211
config IA64_BRL_EMU
	bool
	depends on ITANIUM
	default y

# align cache-sensitive data to 128 bytes
config IA64_L1_CACHE_SHIFT
	int
	default "7" if MCKINLEY
	default "6" if ITANIUM

config IA64_CYCLONE
	bool "Cyclone (EXA) Time Source support"
	help
	  Say Y here to enable support for IBM EXA Cyclone time source.
	  If you're unsure, answer N.

config IOSAPIC
	bool
	depends on !IA64_HP_SIM
	default y

212 213
config IA64_SGI_SN_XP
	tristate "Support communication between SGI SSIs"
214
	depends on IA64_GENERIC || IA64_SGI_SN2
J
Jes Sorensen 已提交
215
	select IA64_UNCACHED_ALLOCATOR
216 217 218 219 220 221 222
	help
	  An SGI machine can be divided into multiple Single System
	  Images which act independently of each other and have
	  hardware based memory protection from the others.  Enabling
	  this feature will allow for direct communication between SSIs
	  based on a network adapter and DMA messaging.

L
Linus Torvalds 已提交
223
config FORCE_MAX_ZONEORDER
224 225 226 227
	int "MAX_ORDER (11 - 17)"  if !HUGETLB_PAGE
	range 11 17  if !HUGETLB_PAGE
	default "17" if HUGETLB_PAGE
	default "11"
L
Linus Torvalds 已提交
228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247

config SMP
	bool "Symmetric multi-processing support"
	help
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, say N.  If you have a system with more
	  than one CPU, say Y.

	  If you say N here, the kernel will run on single and multiprocessor
	  systems, but will use only one CPU of a multiprocessor system.  If
	  you say Y here, the kernel will run on many, but not all,
	  single processor systems.  On a single processor system, the kernel
	  will run faster if you say N here.

	  See also the <file:Documentation/smp.txt> and the SMP-HOWTO
	  available at <http://www.tldp.org/docs.html#howto>.

	  If you don't know what to do here, say N.

config NR_CPUS
248 249
	int "Maximum number of CPUs (2-1024)"
	range 2 1024
L
Linus Torvalds 已提交
250 251 252 253 254 255 256 257 258
	depends on SMP
	default "64"
	help
	  You should set this to the number of CPUs in your system, but
	  keep in mind that a kernel compiled for, e.g., 2 CPUs will boot but
	  only use 2 CPUs on a >2 CPU system.  Setting this to a value larger
	  than 64 will cause the use of a CPU mask array, causing a small
	  performance hit.

259 260 261 262 263 264 265 266 267
config IA64_NR_NODES
	int "Maximum number of NODEs (256-1024)" if (IA64_SGI_SN2 || IA64_GENERIC)
	range 256 1024
	depends on IA64_SGI_SN2 || IA64_GENERIC
	default "256"
	help
	  This option specifies the maximum number of nodes in your SSI system.
	  If in doubt, use the default.

L
Linus Torvalds 已提交
268 269 270 271 272 273 274 275 276 277
config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
	depends on SMP && EXPERIMENTAL
	select HOTPLUG
	default n
	---help---
	  Say Y here to experiment with turning CPUs off and on.  CPUs
	  can be controlled through /sys/devices/system/cpu/cpu#.
	  Say N if you want to disable CPU hotplug.

S
Suresh Siddha 已提交
278 279 280 281 282 283 284 285 286
config SCHED_SMT
	bool "SMT scheduler support"
	depends on SMP
	default off
	help
	  Improves the CPU scheduler's decision making when dealing with
	  Intel IA64 chips with MultiThreading at a cost of slightly increased
	  overhead in some places. If unsure say N here.

A
Ashok Raj 已提交
287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305
config PERMIT_BSP_REMOVE
	bool "Support removal of Bootstrap Processor"
	depends on HOTPLUG_CPU
	default n
	---help---
	Say Y here if your platform SAL will support removal of BSP with HOTPLUG_CPU
	support. 

config FORCE_CPEI_RETARGET
	bool "Force assumption that CPEI can be re-targetted"
	depends on PERMIT_BSP_REMOVE
	default n
	---help---
	Say Y if you need to force the assumption that CPEI can be re-targetted to
	any cpu in the system. This hint is available via ACPI 3.0 specifications.
	Tiger4 systems are capable of re-directing CPEI to any CPU other than BSP.
	This option it useful to enable this feature on older BIOS's as well.
	You can also enable this by using boot command line option force_cpei=1.

L
Linus Torvalds 已提交
306 307 308 309 310 311 312 313 314 315 316 317
config PREEMPT
	bool "Preemptible Kernel"
        help
          This option reduces the latency of the kernel when reacting to
          real-time or interactive events by allowing a low priority process to
          be preempted even if it is in kernel mode executing a system call.
          This allows applications to run more reliably even when the system is
          under load.

          Say Y here if you are building a kernel for a desktop, embedded
          or real-time system.  Say N if you are unsure.

318 319
source "mm/Kconfig"

320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371
config ARCH_SELECT_MEMORY_MODEL
	def_bool y

config ARCH_DISCONTIGMEM_ENABLE
	def_bool y
	help
	  Say Y to support efficient handling of discontiguous physical memory,
	  for architectures which are either NUMA (Non-Uniform Memory Access)
	  or have huge holes in the physical address space for other reasons.
 	  See <file:Documentation/vm/numa> for more.

config ARCH_FLATMEM_ENABLE
	def_bool y

config ARCH_SPARSEMEM_ENABLE
	def_bool y
	depends on ARCH_DISCONTIGMEM_ENABLE

config ARCH_DISCONTIGMEM_DEFAULT
	def_bool y if (IA64_SGI_SN2 || IA64_GENERIC || IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB)
	depends on ARCH_DISCONTIGMEM_ENABLE

config NUMA
	bool "NUMA support"
	depends on !IA64_HP_SIM && !FLATMEM
	default y if IA64_SGI_SN2
	help
	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
	  Access).  This option is for configuring high-end multiprocessor
	  server systems.  If in doubt, say N.

# VIRTUAL_MEM_MAP and FLAT_NODE_MEM_MAP are functionally equivalent.
# VIRTUAL_MEM_MAP has been retained for historical reasons.
config VIRTUAL_MEM_MAP
	bool "Virtual mem map"
	depends on !SPARSEMEM
	default y if !IA64_HP_SIM
	help
	  Say Y to compile the kernel with support for a virtual mem map.
	  This code also only takes effect if a memory hole of greater than
	  1 Gb is found during boot.  You must turn this option on if you
	  require the DISCONTIGMEM option for your machine. If you are
	  unsure, say Y.

config HOLES_IN_ZONE
	bool
	default y if VIRTUAL_MEM_MAP

config HAVE_ARCH_EARLY_PFN_TO_NID
	def_bool y
	depends on NEED_MULTIPLE_NODES

L
Linus Torvalds 已提交
372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407
config IA32_SUPPORT
	bool "Support for Linux/x86 binaries"
	help
	  IA-64 processors can execute IA-32 (X86) instructions.  By
	  saying Y here, the kernel will include IA-32 system call
	  emulation support which makes it possible to transparently
	  run IA-32 Linux binaries on an IA-64 Linux system.
	  If in doubt, say Y.

config COMPAT
	bool
	depends on IA32_SUPPORT
	default y

config IA64_MCA_RECOVERY
	tristate "MCA recovery from errors other than TLB."

config PERFMON
	bool "Performance monitor support"
	help
	  Selects whether support for the IA-64 performance monitor hardware
	  is included in the kernel.  This makes some kernel data-structures a
	  little bigger and slows down execution a bit, but it is generally
	  a good idea to turn this on.  If you're unsure, say Y.

config IA64_PALINFO
	tristate "/proc/pal support"
	help
	  If you say Y here, you are able to get PAL (Processor Abstraction
	  Layer) information in /proc/pal.  This contains useful information
	  about the processors in your systems, such as cache and TLB sizes
	  and the PAL firmware version in use.

	  To use this option, you have to ensure that the "/proc file system
	  support" (CONFIG_PROC_FS) is enabled, too.

408 409 410
config SGI_SN
	def_bool y if (IA64_SGI_SN2 || IA64_GENERIC)

L
Linus Torvalds 已提交
411 412 413 414 415 416 417 418
source "drivers/firmware/Kconfig"

source "fs/Kconfig.binfmt"

endmenu

menu "Power management and ACPI"

419
source "kernel/power/Kconfig"
L
Linus Torvalds 已提交
420 421 422

source "drivers/acpi/Kconfig"

423 424 425 426 427 428
if PM

source "arch/ia64/kernel/cpufreq/Kconfig"

endif

L
Linus Torvalds 已提交
429 430 431 432 433 434 435 436 437
endmenu

if !IA64_HP_SIM

menu "Bus options (PCI, PCMCIA)"

config PCI
	bool "PCI support"
	help
438 439
	  Real IA-64 machines all have PCI/PCI-X/PCI Express busses.  Say Y
	  here unless you are using a simulator without PCI support.
L
Linus Torvalds 已提交
440 441 442 443 444 445 446 447 448 449 450 451 452 453 454

config PCI_DOMAINS
	bool
	default PCI

source "drivers/pci/Kconfig"

source "drivers/pci/hotplug/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

endif

455 456
source "net/Kconfig"

L
Linus Torvalds 已提交
457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473
source "drivers/Kconfig"

source "fs/Kconfig"

source "lib/Kconfig"

#
# Use the generic interrupt handling code in kernel/irq/:
#
config GENERIC_HARDIRQS
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

474 475 476 477 478
config GENERIC_PENDING_IRQ
	bool
	depends on GENERIC_HARDIRQS && SMP
	default y

L
Linus Torvalds 已提交
479 480
source "arch/ia64/hp/sim/Kconfig"

481 482 483
menu "Instrumentation Support"
        depends on EXPERIMENTAL

L
Linus Torvalds 已提交
484 485
source "arch/ia64/oprofile/Kconfig"

486 487
config KPROBES
	bool "Kprobes (EXPERIMENTAL)"
L
Linus Torvalds 已提交
488
	depends on EXPERIMENTAL && MODULES
489 490 491 492 493 494 495 496
	help
	  Kprobes allows you to trap at almost any kernel address and
	  execute a callback function.  register_kprobe() establishes
	  a probepoint and specifies the callback.  Kprobes is useful
	  for kernel debugging, non-intrusive instrumentation and testing.
	  If in doubt, say "N".
endmenu

L
Linus Torvalds 已提交
497 498 499 500 501
source "arch/ia64/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"