15 config GENERIC_CMOS_UPDATE
19 config CLOCKSOURCE_WATCHDOG
23 config GENERIC_CLOCKEVENTS
27 config GENERIC_CLOCKEVENTS_BROADCAST
30 depends on X86_64 || (X86_32 && X86_LOCAL_APIC)
32 config LOCKDEP_SUPPORT
36 config STACKTRACE_SUPPORT
40 config SEMAPHORE_SLEEPERS
59 config GENERIC_ISA_DMA
72 config GENERIC_HWEIGHT
76 config ARCH_MAY_HAVE_PC_FDC
84 config RWSEM_GENERIC_SPINLOCK
87 config RWSEM_XCHGADD_ALGORITHM
90 config ARCH_HAS_ILOG2_U32
93 config ARCH_HAS_ILOG2_U64
96 config GENERIC_CALIBRATE_DELAY
99 config GENERIC_TIME_VSYSCALL
111 config ARCH_POPULATES_NODE_MAP
118 # Use the generic interrupt handling code in kernel/irq/:
119 config GENERIC_HARDIRQS
123 config GENERIC_IRQ_PROBE
127 config GENERIC_PENDING_IRQ
129 depends on GENERIC_HARDIRQS && SMP
134 depends on X86_32 && SMP && !X86_VOYAGER
139 depends on SMP && !(X86_VISWS || X86_VOYAGER || MK8)
142 config X86_BIOS_REBOOT
144 depends on X86_32 && !(X86_VISWS || X86_VOYAGER)
147 config X86_TRAMPOLINE
149 depends on X86_SMP || (X86_VOYAGER && SMP)
156 menu "Power management options"
157 depends on !X86_VOYAGER
159 config ARCH_HIBERNATION_HEADER
161 depends on X86_64 && HIBERNATION
164 source "kernel/power/Kconfig"
166 source "drivers/acpi/Kconfig"
169 tristate "APM (Advanced Power Management) BIOS support"
170 depends on X86_32 && PM_SLEEP && !X86_VISWS
172 APM is a BIOS specification for saving power using several different
173 techniques. This is mostly useful for battery powered laptops with
174 APM compliant BIOSes. If you say Y here, the system time will be
175 reset after a RESUME operation, the /proc/apm device will provide
176 battery status information, and user-space programs will receive
177 notification of APM "events" (e.g. battery status change).
179 If you select "Y" here, you can disable actual use of the APM
180 BIOS by passing the "apm=off" option to the kernel at boot time.
182 Note that the APM support is almost completely disabled for
183 machines with more than one CPU.
185 In order to use APM, you will need supporting software. For location
186 and more information, read <file:Documentation/pm.txt> and the
187 Battery Powered Linux mini-HOWTO, available from
188 <http://www.tldp.org/docs.html#howto>.
190 This driver does not spin down disk drives (see the hdparm(8)
191 manpage ("man 8 hdparm") for that), and it doesn't turn off
192 VESA-compliant "green" monitors.
194 This driver does not support the TI 4000M TravelMate and the ACER
195 486/DX4/75 because they don't have compliant BIOSes. Many "green"
196 desktop machines also don't have compliant BIOSes, and this driver
197 may cause those machines to panic during the boot phase.
199 Generally, if you don't have a battery in your machine, there isn't
200 much point in using this driver and you should say N. If you get
201 random kernel OOPSes or reboots that don't seem to be related to
202 anything, try disabling/enabling this option (or disabling/enabling
205 Some other things you should try when experiencing seemingly random,
208 1) make sure that you have enough swap space and that it is
210 2) pass the "no-hlt" option to the kernel
211 3) switch on floating point emulation in the kernel and pass
212 the "no387" option to the kernel
213 4) pass the "floppy=nodma" option to the kernel
214 5) pass the "mem=4M" option to the kernel (thereby disabling
215 all but the first 4 MB of RAM)
216 6) make sure that the CPU is not over clocked.
217 7) read the sig11 FAQ at <http://www.bitwizard.nl/sig11/>
218 8) disable the cache from your BIOS settings
219 9) install a fan for the video card or exchange video RAM
220 10) install a better fan for the CPU
221 11) exchange RAM chips
222 12) exchange the motherboard.
224 To compile this driver as a module, choose M here: the
225 module will be called apm.
229 config APM_IGNORE_USER_SUSPEND
230 bool "Ignore USER SUSPEND"
232 This option will ignore USER SUSPEND requests. On machines with a
233 compliant APM BIOS, you want to say N. However, on the NEC Versa M
234 series notebooks, it is necessary to say Y because of a BIOS bug.
237 bool "Enable PM at boot time"
239 Enable APM features at boot time. From page 36 of the APM BIOS
240 specification: "When disabled, the APM BIOS does not automatically
241 power manage devices, enter the Standby State, enter the Suspend
242 State, or take power saving steps in response to CPU Idle calls."
243 This driver will make CPU Idle calls when Linux is idle (unless this
244 feature is turned off -- see "Do CPU IDLE calls", below). This
245 should always save battery power, but more complicated APM features
246 will be dependent on your BIOS implementation. You may need to turn
247 this option off if your computer hangs at boot time when using APM
248 support, or if it beeps continuously instead of suspending. Turn
249 this off if you have a NEC UltraLite Versa 33/C or a Toshiba
250 T400CDT. This is off by default since most machines do fine without
254 bool "Make CPU Idle calls when idle"
256 Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
257 On some machines, this can activate improved power savings, such as
258 a slowed CPU clock rate, when the machine is idle. These idle calls
259 are made after the idle loop has run for some length of time (e.g.,
260 333 mS). On some machines, this will cause a hang at boot time or
261 whenever the CPU becomes idle. (On machines with more than one CPU,
262 this option does nothing.)
264 config APM_DISPLAY_BLANK
265 bool "Enable console blanking using APM"
267 Enable console blanking using the APM. Some laptops can use this to
268 turn off the LCD backlight when the screen blanker of the Linux
269 virtual console blanks the screen. Note that this is only used by
270 the virtual console screen blanker, and won't turn off the backlight
271 when using the X Window system. This also doesn't have anything to
272 do with your VESA-compliant power-saving monitor. Further, this
273 option doesn't work for all laptops -- it might not turn off your
274 backlight at all, or it might print a lot of errors to the console,
275 especially if you are using gpm.
277 config APM_ALLOW_INTS
278 bool "Allow interrupts during APM BIOS calls"
280 Normally we disable external interrupts while we are making calls to
281 the APM BIOS as a measure to lessen the effects of a badly behaving
282 BIOS implementation. The BIOS should reenable interrupts if it
283 needs to. Unfortunately, some BIOSes do not -- especially those in
284 many of the newer IBM Thinkpads. If you experience hangs when you
285 suspend, try setting this to Y. Otherwise, say N.
287 config APM_REAL_MODE_POWER_OFF
288 bool "Use real mode APM BIOS call to power off"
290 Use real mode APM BIOS calls to switch off the computer. This is
291 a work-around for a number of buggy BIOSes. Switch this option on if
292 your computer crashes instead of powering off properly.
296 source "arch/x86/kernel/cpu/cpufreq/Kconfig"
298 source "drivers/cpuidle/Kconfig"
303 menu "Bus options (PCI etc.)"
306 bool "PCI support" if !X86_VISWS
307 depends on !X86_VOYAGER
308 default y if X86_VISWS
309 select ARCH_SUPPORTS_MSI if (X86_LOCAL_APIC && X86_IO_APIC)
311 Find out whether you have a PCI motherboard. PCI is the name of a
312 bus system, i.e. the way the CPU talks to the other stuff inside
313 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
314 VESA. If you have PCI, say Y, otherwise N.
316 The PCI-HOWTO, available from
317 <http://www.tldp.org/docs.html#howto>, contains valuable
318 information about which PCI hardware does work under Linux and which
322 prompt "PCI access mode"
323 depends on X86_32 && PCI && !X86_VISWS
326 On PCI systems, the BIOS can be used to detect the PCI devices and
327 determine their configuration. However, some old PCI motherboards
328 have BIOS bugs and may crash if this is done. Also, some embedded
329 PCI-based systems don't have any BIOS at all. Linux can also try to
330 detect the PCI hardware directly without using the BIOS.
332 With this option, you can specify how Linux should detect the
333 PCI devices. If you choose "BIOS", the BIOS will be used,
334 if you choose "Direct", the BIOS won't be used, and if you
335 choose "MMConfig", then PCI Express MMCONFIG will be used.
336 If you choose "Any", the kernel will try MMCONFIG, then the
337 direct access method and falls back to the BIOS if that doesn't
338 work. If unsure, go with the default, which is "Any".
343 config PCI_GOMMCONFIG
356 depends on X86_32 && !X86_VISWS && PCI && (PCI_GOBIOS || PCI_GOANY)
359 # x86-64 doesn't support PCI BIOS access from long mode so always go direct.
362 depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY) || X86_VISWS)
367 depends on X86_32 && PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
376 bool "Support mmconfig PCI config space access"
377 depends on X86_64 && PCI && ACPI
380 bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
381 depends on X86_64 && PCI_MSI && ACPI && EXPERIMENTAL
383 DMA remapping (DMAR) devices support enables independent address
384 translations for Direct Memory Access (DMA) from devices.
385 These DMA remapping devices are reported via ACPI tables
386 and include PCI device scope covered by these DMA
390 bool "Support for Graphics workaround"
394 Current Graphics drivers tend to use physical address
395 for DMA and avoid using DMA APIs. Setting this config
396 option permits the IOMMU driver to set a unity map for
397 all the OS-visible memory. Hence the driver can continue
398 to use physical addresses for DMA.
400 config DMAR_FLOPPY_WA
405 Floppy disk drivers are know to bypass DMA API calls
406 thereby failing to work when IOMMU is enabled. This
407 workaround will setup a 1:1 mapping for the first
408 16M to make floppy (an ISA device) work.
410 source "drivers/pci/pcie/Kconfig"
412 source "drivers/pci/Kconfig"
414 # x86_64 have no ISA slots, but do have ISA-style DMA.
423 depends on !(X86_VOYAGER || X86_VISWS)
425 Find out whether you have ISA slots on your motherboard. ISA is the
426 name of a bus system, i.e. the way the CPU talks to the other stuff
427 inside your box. Other bus systems are PCI, EISA, MicroChannel
428 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
429 newer boards don't support it. If you have ISA, say Y, otherwise N.
435 The Extended Industry Standard Architecture (EISA) bus was
436 developed as an open alternative to the IBM MicroChannel bus.
438 The EISA bus provided some of the features of the IBM MicroChannel
439 bus while maintaining backward compatibility with cards made for
440 the older ISA bus. The EISA bus saw limited use between 1988 and
441 1995 when it was made obsolete by the PCI bus.
443 Say Y here if you are building a kernel for an EISA-based machine.
447 source "drivers/eisa/Kconfig"
450 bool "MCA support" if !(X86_VISWS || X86_VOYAGER)
451 default y if X86_VOYAGER
453 MicroChannel Architecture is found in some IBM PS/2 machines and
454 laptops. It is a bus system similar to PCI or ISA. See
455 <file:Documentation/mca.txt> (and especially the web page given
456 there) before attempting to build an MCA bus kernel.
458 source "drivers/mca/Kconfig"
461 tristate "NatSemi SCx200 support"
462 depends on !X86_VOYAGER
464 This provides basic support for National Semiconductor's
465 (now AMD's) Geode processors. The driver probes for the
466 PCI-IDs of several on-chip devices, so its a good dependency
467 for other scx200_* drivers.
469 If compiled as a module, the driver is named scx200.
471 config SCx200HR_TIMER
472 tristate "NatSemi SCx200 27MHz High-Resolution Timer Support"
473 depends on SCx200 && GENERIC_TIME
476 This driver provides a clocksource built upon the on-chip
477 27MHz high-resolution timer. Its also a workaround for
478 NSC Geode SC-1100's buggy TSC, which loses time when the
479 processor goes idle (as is done by the scheduler). The
480 other workaround is idle=poll boot option.
482 config GEODE_MFGPT_TIMER
483 bool "Geode Multi-Function General Purpose Timer (MFGPT) events"
484 depends on MGEODE_LX && GENERIC_TIME && GENERIC_CLOCKEVENTS
487 This driver provides a clock event source based on the MFGPT
488 timer(s) in the CS5535 and CS5536 companion chip for the geode.
489 MFGPTs have a better resolution and max interval than the
490 generic PIT, and are suitable for use as high-res timers.
496 depends on AGP_AMD64 || (X86_64 && (GART_IOMMU || (PCI && NUMA)))
498 source "drivers/pcmcia/Kconfig"
500 source "drivers/pci/hotplug/Kconfig"
505 menu "Executable file formats / Emulations"
507 source "fs/Kconfig.binfmt"
509 config IA32_EMULATION
510 bool "IA32 Emulation"
513 Include code to run 32-bit programs under a 64-bit kernel. You should
514 likely turn this on, unless you're 100% sure that you don't have any
515 32-bit programs left.
518 tristate "IA32 a.out support"
519 depends on IA32_EMULATION
521 Support old a.out binaries in the 32bit emulation.
525 depends on IA32_EMULATION
528 config COMPAT_FOR_U64_ALIGNMENT
532 config SYSVIPC_COMPAT
534 depends on X86_64 && COMPAT && SYSVIPC
542 source "drivers/Kconfig"
544 source "drivers/firmware/Kconfig"
548 source "kernel/Kconfig.instrumentation"
550 source "arch/x86/Kconfig.debug"
552 source "security/Kconfig"
554 source "crypto/Kconfig"