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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux Kernel Configuration"
7
8config ARM
9 bool
10 default y
Alessandro Zummo12b824f2006-03-27 01:16:35 -080011 select RTC_LIB
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 help
13 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000014 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000016 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 Europe. There is an ARM Linux project with a web page at
18 <http://www.arm.linux.org.uk/>.
19
20config MMU
21 bool
22 default y
23
24config EISA
25 bool
26 ---help---
27 The Extended Industry Standard Architecture (EISA) bus was
28 developed as an open alternative to the IBM MicroChannel bus.
29
30 The EISA bus provided some of the features of the IBM MicroChannel
31 bus while maintaining backward compatibility with cards made for
32 the older ISA bus. The EISA bus saw limited use between 1988 and
33 1995 when it was made obsolete by the PCI bus.
34
35 Say Y here if you are building a kernel for an EISA-based machine.
36
37 Otherwise, say N.
38
39config SBUS
40 bool
41
42config MCA
43 bool
44 help
45 MicroChannel Architecture is found in some IBM PS/2 machines and
46 laptops. It is a bus system similar to PCI or ISA. See
47 <file:Documentation/mca.txt> (and especially the web page given
48 there) before attempting to build an MCA bus kernel.
49
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010050config GENERIC_HARDIRQS
51 bool
52 default y
53
Russell King7ad1bcb2006-08-27 12:07:02 +010054config TRACE_IRQFLAGS_SUPPORT
55 bool
56 default y
57
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010058config HARDIRQS_SW_RESEND
59 bool
60 default y
61
62config GENERIC_IRQ_PROBE
63 bool
64 default y
65
Linus Torvalds1da177e2005-04-16 15:20:36 -070066config RWSEM_GENERIC_SPINLOCK
67 bool
68 default y
69
70config RWSEM_XCHGADD_ALGORITHM
71 bool
72
Akinobu Mitab89c3b12006-03-26 01:39:19 -080073config GENERIC_HWEIGHT
74 bool
75 default y
76
Linus Torvalds1da177e2005-04-16 15:20:36 -070077config GENERIC_CALIBRATE_DELAY
78 bool
79 default y
80
81config GENERIC_BUST_SPINLOCK
82 bool
83
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +010084config ARCH_MAY_HAVE_PC_FDC
85 bool
86
Linus Torvalds1da177e2005-04-16 15:20:36 -070087config GENERIC_ISA_DMA
88 bool
89
Linus Torvalds1da177e2005-04-16 15:20:36 -070090config FIQ
91 bool
92
Al Viro034d2f52005-12-19 16:27:59 -050093config ARCH_MTD_XIP
94 bool
95
Hyok S. Choic760fc12006-03-27 15:18:50 +010096config VECTORS_BASE
97 hex
98 default 0xffff0000 if MMU
99 default DRAM_BASE if REMAP_VECTORS_TO_RAM
100 default 0x00000000
101 help
102 The base address of exception vectors.
103
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104source "init/Kconfig"
105
106menu "System Type"
107
108choice
109 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000110 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100112config ARCH_AAEC2000
113 bool "Agilent AAEC-2000 based"
114 select ARM_AMBA
115 help
116 This enables support for systems based on the Agilent AAEC-2000
117
118config ARCH_INTEGRATOR
119 bool "ARM Ltd. Integrator family"
120 select ARM_AMBA
121 select ICST525
122 help
123 Support for ARM's Integrator platform.
124
125config ARCH_REALVIEW
126 bool "ARM Ltd. RealView family"
127 select ARM_AMBA
128 select ICST307
129 help
130 This enables support for ARM Ltd RealView boards.
131
132config ARCH_VERSATILE
133 bool "ARM Ltd. Versatile family"
134 select ARM_AMBA
135 select ARM_VIC
136 select ICST307
137 help
138 This enables support for ARM Ltd Versatile board.
139
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100140config ARCH_AT91
141 bool "Atmel AT91"
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100142 help
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100143 This enables support for systems based on the Atmel AT91RM9200
144 and AT91SAM9xxx processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100145
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146config ARCH_CLPS7500
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100147 bool "Cirrus CL-PS7500FE"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +0100149 select ISA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000150 help
151 Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152
153config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100154 bool "Cirrus Logic CLPS711x/EP721x-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000155 help
156 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157
158config ARCH_CO285
159 bool "Co-EBSA285"
160 select FOOTBRIDGE
161 select FOOTBRIDGE_ADDIN
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000162 help
163 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164
165config ARCH_EBSA110
166 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100167 select ISA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168 help
169 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000170 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171 Ethernet interface, two PCMCIA sockets, two serial ports and a
172 parallel port.
173
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000174config ARCH_EP93XX
175 bool "EP93xx-based"
176 select ARM_AMBA
177 select ARM_VIC
178 help
179 This enables support for the Cirrus EP93xx series of CPUs.
180
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181config ARCH_FOOTBRIDGE
182 bool "FootBridge"
183 select FOOTBRIDGE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000184 help
185 Support for systems based on the DC21285 companion chip
186 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100188config ARCH_NETX
189 bool "Hilscher NetX based"
190 select ARM_VIC
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000191 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100192 This enables support for systems based on the Hilscher NetX Soc
193
194config ARCH_H720X
195 bool "Hynix HMS720x-based"
196 select ISA_DMA_API
197 help
198 This enables support for systems based on the Hynix HMS720x
199
200config ARCH_IMX
201 bool "IMX"
202 help
203 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100205config ARCH_IOP32X
206 bool "IOP32x-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100207 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100208 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000209 help
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100210 Support for Intel's 80219 and IOP32X (XScale) family of
211 processors.
212
213config ARCH_IOP33X
214 bool "IOP33x-based"
215 depends on MMU
216 select PCI
217 help
218 Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
220config ARCH_IXP4XX
221 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100222 depends on MMU
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000223 help
224 Support for Intel's IXP4XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
226config ARCH_IXP2000
227 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100228 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100229 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000230 help
231 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100233config ARCH_IXP23XX
234 bool "IXP23XX-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100235 depends on MMU
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100236 select PCI
237 help
238 Support for Intel's IXP23xx (XScale) family of processors.
239
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240config ARCH_L7200
241 bool "LinkUp-L7200"
242 select FIQ
243 help
244 Say Y here if you intend to run this kernel on a LinkUp Systems
245 L7200 Software Development Board which uses an ARM720T processor.
246 Information on this board can be obtained at:
247
248 <http://www.linkupsys.com/>
249
250 If you have any questions or comments about the Linux kernel port
251 to this board, send e-mail to <sjhill@cotw.com>.
252
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100253config ARCH_PNX4008
254 bool "Philips Nexperia PNX4008 Mobile"
255 help
256 This enables support for Philips PNX4008 mobile platform.
257
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258config ARCH_PXA
259 bool "PXA2xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100260 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500261 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000262 help
263 Support for Intel's PXA2XX processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264
265config ARCH_RPC
266 bool "RiscPC"
267 select ARCH_ACORN
268 select FIQ
269 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100270 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000271 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 help
273 On the Acorn Risc-PC, Linux can support the internal IDE disk and
274 CD-ROM interface, serial and parallel port, and the floppy drive.
275
276config ARCH_SA1100
277 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100278 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100279 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500280 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000281 help
282 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283
284config ARCH_S3C2410
Ben Dookscd701aa2006-06-26 15:12:58 +0100285 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 help
287 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
288 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000289 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
291config ARCH_SHARK
292 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100293 select ISA
294 select ISA_DMA
295 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000296 help
297 Support for the StrongARM based Digital DNARD machine, also known
298 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299
300config ARCH_LH7A40X
301 bool "Sharp LH7A40X"
302 help
303 Say Y here for systems based on one of the Sharp LH7A40X
304 System on a Chip processors. These CPUs include an ARM922T
305 core with a wide array of integrated devices for
306 hand-held and low-power applications.
307
308config ARCH_OMAP
309 bool "TI OMAP"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000310 help
311 Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313endchoice
314
315source "arch/arm/mach-clps711x/Kconfig"
316
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000317source "arch/arm/mach-ep93xx/Kconfig"
318
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319source "arch/arm/mach-footbridge/Kconfig"
320
321source "arch/arm/mach-integrator/Kconfig"
322
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100323source "arch/arm/mach-iop32x/Kconfig"
324
325source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
327source "arch/arm/mach-ixp4xx/Kconfig"
328
329source "arch/arm/mach-ixp2000/Kconfig"
330
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100331source "arch/arm/mach-ixp23xx/Kconfig"
332
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333source "arch/arm/mach-pxa/Kconfig"
334
335source "arch/arm/mach-sa1100/Kconfig"
336
Tony Lindgrend48af152005-07-10 19:58:17 +0100337source "arch/arm/plat-omap/Kconfig"
338
339source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
Tony Lindgren1dbae812005-11-10 14:26:51 +0000341source "arch/arm/mach-omap2/Kconfig"
342
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343source "arch/arm/mach-s3c2410/Kconfig"
344
345source "arch/arm/mach-lh7a40x/Kconfig"
346
347source "arch/arm/mach-imx/Kconfig"
348
349source "arch/arm/mach-h720x/Kconfig"
350
351source "arch/arm/mach-versatile/Kconfig"
352
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100353source "arch/arm/mach-aaec2000/Kconfig"
354
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000355source "arch/arm/mach-realview/Kconfig"
356
SAN People73a59c12006-01-09 17:05:41 +0000357source "arch/arm/mach-at91rm9200/Kconfig"
358
Sascha Hauerbb6d8c82006-06-19 15:27:53 +0100359source "arch/arm/mach-netx/Kconfig"
360
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361# Definitions to make life easier
362config ARCH_ACORN
363 bool
364
365source arch/arm/mm/Kconfig
366
367# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
368config XSCALE_PMU
369 bool
370 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
371 default y
372
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100373if !MMU
374source "arch/arm/Kconfig-nommu"
375endif
376
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377endmenu
378
379source "arch/arm/common/Kconfig"
380
381config FORCE_MAX_ZONEORDER
382 int
383 depends on SA1111
384 default "9"
385
386menu "Bus support"
387
388config ARM_AMBA
389 bool
390
391config ISA
392 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 help
394 Find out whether you have ISA slots on your motherboard. ISA is the
395 name of a bus system, i.e. the way the CPU talks to the other stuff
396 inside your box. Other bus systems are PCI, EISA, MicroChannel
397 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
398 newer boards don't support it. If you have ISA, say Y, otherwise N.
399
Russell King065909b2006-01-04 15:44:16 +0000400# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401config ISA_DMA
402 bool
Russell King065909b2006-01-04 15:44:16 +0000403 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404
Russell King065909b2006-01-04 15:44:16 +0000405# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100406config ISA_DMA_API
407 bool
Al Viro5cae8412005-05-04 05:39:22 +0100408
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409config PCI
Milan Svoboda68939122006-06-25 22:12:12 +0100410 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 help
412 Find out whether you have a PCI motherboard. PCI is the name of a
413 bus system, i.e. the way the CPU talks to the other stuff inside
414 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
415 VESA. If you have PCI, say Y, otherwise N.
416
417 The PCI-HOWTO, available from
418 <http://www.tldp.org/docs.html#howto>, contains valuable
419 information about which PCI hardware does work under Linux and which
420 doesn't.
421
422# Select the host bridge type
423config PCI_HOST_VIA82C505
424 bool
425 depends on PCI && ARCH_SHARK
426 default y
427
428source "drivers/pci/Kconfig"
429
430source "drivers/pcmcia/Kconfig"
431
432endmenu
433
434menu "Kernel Features"
435
436config SMP
437 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell Kingf6db4492005-11-07 21:30:21 +0000438 depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700439 help
440 This enables support for systems with more than one CPU. If you have
441 a system with only one CPU, like most personal computers, say N. If
442 you have a system with more than one CPU, say Y.
443
444 If you say N here, the kernel will run on single and multiprocessor
445 machines, but will use only one CPU of a multiprocessor machine. If
446 you say Y here, the kernel will run on many, but not all, single
447 processor machines. On a single processor machine, the kernel will
448 run faster if you say N here.
449
Arthur Othieno12c62c22005-09-10 00:26:22 -0700450 See also the <file:Documentation/smp.txt>,
451 <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
453 <http://www.linuxdoc.org/docs.html#howto>.
454
455 If you don't know what to do here, say N.
456
457config NR_CPUS
458 int "Maximum number of CPUs (2-32)"
459 range 2 32
460 depends on SMP
461 default "4"
462
Russell Kinga054a812005-11-02 22:24:33 +0000463config HOTPLUG_CPU
464 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
465 depends on SMP && HOTPLUG && EXPERIMENTAL
466 help
467 Say Y here to experiment with turning CPUs off and on. CPUs
468 can be controlled through /sys/devices/system/cpu.
469
Russell King37ee16a2005-11-08 19:08:05 +0000470config LOCAL_TIMERS
471 bool "Use local timer interrupts"
Russell King2a98beb2005-11-09 10:50:29 +0000472 depends on SMP && REALVIEW_MPCORE
Russell King37ee16a2005-11-08 19:08:05 +0000473 default y
474 help
475 Enable support for local timers on SMP platforms, rather then the
476 legacy IPI broadcast method. Local timers allows the system
477 accounting to be spread across the timer interval, preventing a
478 "thundering herd" at every timer tick.
479
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480config PREEMPT
481 bool "Preemptible Kernel (EXPERIMENTAL)"
482 depends on EXPERIMENTAL
483 help
484 This option reduces the latency of the kernel when reacting to
485 real-time or interactive events by allowing a low priority process to
486 be preempted even if it is in kernel mode executing a system call.
487 This allows applications to run more reliably even when the system is
488 under load.
489
490 Say Y here if you are building a kernel for a desktop, embedded
491 or real-time system. Say N if you are unsure.
492
Russell King8749af62005-06-25 19:39:45 +0100493config NO_IDLE_HZ
494 bool "Dynamic tick timer"
495 help
496 Select this option if you want to disable continuous timer ticks
497 and have them programmed to occur as required. This option saves
498 power as the system can remain in idle state for longer.
499
500 By default dynamic tick is disabled during the boot, and can be
501 manually enabled with:
502
503 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
504
505 Alternatively, if you want dynamic tick automatically enabled
506 during boot, pass "dyntick=enable" via the kernel command string.
507
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100508 Please note that dynamic tick may affect the accuracy of
509 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100510 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
511 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100512
Russell Kingf8065812006-03-02 22:41:59 +0000513config HZ
514 int
515 default 128 if ARCH_L7200
516 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000517 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
Russell Kingf8065812006-03-02 22:41:59 +0000518 default 100
519
Nicolas Pitre704bdda02006-01-14 16:33:50 +0000520config AEABI
521 bool "Use the ARM EABI to compile the kernel"
522 help
523 This option allows for the kernel to be compiled using the latest
524 ARM ABI (aka EABI). This is only useful if you are using a user
525 space environment that is also compiled with EABI.
526
527 Since there are major incompatibilities between the legacy ABI and
528 EABI, especially with regard to structure member alignment, this
529 option also changes the kernel syscall calling convention to
530 disambiguate both ABIs and allow for backward compatibility support
531 (selected with CONFIG_OABI_COMPAT).
532
533 To use this you need GCC version 4.0.0 or later.
534
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000535config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000536 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000537 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000538 default y
539 help
540 This option preserves the old syscall interface along with the
541 new (ARM EABI) one. It also provides a compatibility layer to
542 intercept syscalls that have structure arguments which layout
543 in memory differs between the legacy ABI and the new ARM EABI
544 (only for non "thumb" binaries). This option adds a tiny
545 overhead to all syscalls and produces a slightly larger kernel.
546 If you know you'll be using only pure EABI user space then you
547 can say N here. If this option is not selected and you attempt
548 to execute a legacy ABI binary then the result will be
549 UNPREDICTABLE (in fact it can be predicted that it won't work
550 at all). If in doubt say Y.
551
Dave Hansen3f22ab22005-06-23 00:07:43 -0700552config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100554 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 help
556 Say Y to support efficient handling of discontiguous physical memory,
557 for architectures which are either NUMA (Non-Uniform Memory Access)
558 or have huge holes in the physical address space for other reasons.
559 See <file:Documentation/vm/numa> for more.
560
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700561config NODES_SHIFT
562 int
563 default "4" if ARCH_LH7A40X
564 default "2"
565 depends on NEED_MULTIPLE_NODES
566
Dave Hansen3f22ab22005-06-23 00:07:43 -0700567source "mm/Kconfig"
568
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569config LEDS
570 bool "Timer and CPU usage LEDs"
571 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
572 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
573 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
574 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000575 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
Jürgen Schindele326764a2006-06-29 16:01:43 +0100576 ARCH_AT91RM9200 || MACH_TRIZEPS4
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 help
578 If you say Y here, the LEDs on your machine will be used
579 to provide useful information about your current system status.
580
581 If you are compiling a kernel for a NetWinder or EBSA-285, you will
582 be able to select which LEDs are active using the options below. If
583 you are compiling a kernel for the EBSA-110 or the LART however, the
584 red LED will simply flash regularly to indicate that the system is
585 still functional. It is safe to say Y here if you have a CATS
586 system, but the driver will do nothing.
587
588config LEDS_TIMER
589 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
590 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
591 depends on LEDS
592 default y if ARCH_EBSA110
593 help
594 If you say Y here, one of the system LEDs (the green one on the
595 NetWinder, the amber one on the EBSA285, or the red one on the LART)
596 will flash regularly to indicate that the system is still
597 operational. This is mainly useful to kernel hackers who are
598 debugging unstable kernels.
599
600 The LART uses the same LED for both Timer LED and CPU usage LED
601 functions. You may choose to use both, but the Timer LED function
602 will overrule the CPU usage LED.
603
604config LEDS_CPU
605 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
606 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
607 depends on LEDS
608 help
609 If you say Y here, the red LED will be used to give a good real
610 time indication of CPU usage, by lighting whenever the idle task
611 is not currently executing.
612
613 The LART uses the same LED for both Timer LED and CPU usage LED
614 functions. You may choose to use both, but the Timer LED function
615 will overrule the CPU usage LED.
616
617config ALIGNMENT_TRAP
618 bool
619 default y if !ARCH_EBSA110
620 help
621 ARM processors can not fetch/store information which is not
622 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
623 address divisible by 4. On 32-bit ARM processors, these non-aligned
624 fetch/store instructions will be emulated in software if you say
625 here, which has a severe performance impact. This is necessary for
626 correct operation of some network protocols. With an IP-only
627 configuration it is safe to say N, otherwise say Y.
628
629endmenu
630
631menu "Boot options"
632
633# Compressed boot loader in ROM. Yes, we really want to ask about
634# TEXT and BSS so we preserve their values in the config files.
635config ZBOOT_ROM_TEXT
636 hex "Compressed ROM boot loader base address"
637 default "0"
638 help
639 The physical address at which the ROM-able zImage is to be
640 placed in the target. Platforms which normally make use of
641 ROM-able zImage formats normally set this to a suitable
642 value in their defconfig file.
643
644 If ZBOOT_ROM is not enabled, this has no effect.
645
646config ZBOOT_ROM_BSS
647 hex "Compressed ROM boot loader BSS address"
648 default "0"
649 help
650 The base address of 64KiB of read/write memory in the target
651 for the ROM-able zImage, which must be available while the
652 decompressor is running. Platforms which normally make use of
653 ROM-able zImage formats normally set this to a suitable
654 value in their defconfig file.
655
656 If ZBOOT_ROM is not enabled, this has no effect.
657
658config ZBOOT_ROM
659 bool "Compressed boot loader in ROM/flash"
660 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
661 help
662 Say Y here if you intend to execute your compressed kernel image
663 (zImage) directly from ROM or flash. If unsure, say N.
664
665config CMDLINE
666 string "Default kernel command string"
667 default ""
668 help
669 On some architectures (EBSA110 and CATS), there is currently no way
670 for the boot loader to pass arguments to the kernel. For these
671 architectures, you should supply some command-line options at build
672 time by entering them here. As a minimum, you should specify the
673 memory size and the root device (e.g., mem=64M root=/dev/nfs).
674
675config XIP_KERNEL
676 bool "Kernel Execute-In-Place from ROM"
677 depends on !ZBOOT_ROM
678 help
679 Execute-In-Place allows the kernel to run from non-volatile storage
680 directly addressable by the CPU, such as NOR flash. This saves RAM
681 space since the text section of the kernel is not loaded from flash
682 to RAM. Read-write sections, such as the data section and stack,
683 are still copied to RAM. The XIP kernel is not compressed since
684 it has to run directly from flash, so it will take more space to
685 store it. The flash address used to link the kernel object files,
686 and for storing it, is configuration dependent. Therefore, if you
687 say Y here, you must know the proper physical address where to
688 store the kernel image depending on your own flash memory usage.
689
690 Also note that the make target becomes "make xipImage" rather than
691 "make zImage" or "make Image". The final kernel binary to put in
692 ROM memory will be arch/arm/boot/xipImage.
693
694 If unsure, say N.
695
696config XIP_PHYS_ADDR
697 hex "XIP Kernel Physical Location"
698 depends on XIP_KERNEL
699 default "0x00080000"
700 help
701 This is the physical address in your flash memory the kernel will
702 be linked for and stored to. This address is dependent on your
703 own flash usage.
704
705endmenu
706
Tony Lindgrena7ca9d22006-06-26 16:16:17 -0700707if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708
709menu "CPU Frequency scaling"
710
711source "drivers/cpufreq/Kconfig"
712
713config CPU_FREQ_SA1100
714 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100715 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716 default y
717
718config CPU_FREQ_SA1110
719 bool
720 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
721 default y
722
723config CPU_FREQ_INTEGRATOR
724 tristate "CPUfreq driver for ARM Integrator CPUs"
725 depends on ARCH_INTEGRATOR && CPU_FREQ
726 default y
727 help
728 This enables the CPUfreq driver for ARM Integrator CPUs.
729
730 For details, take a look at <file:Documentation/cpu-freq>.
731
732 If in doubt, say Y.
733
734endmenu
735
736endif
737
738menu "Floating point emulation"
739
740comment "At least one emulation must be selected"
741
742config FPE_NWFPE
743 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000744 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745 ---help---
746 Say Y to include the NWFPE floating point emulator in the kernel.
747 This is necessary to run most binaries. Linux does not currently
748 support floating point hardware so you need to say Y here even if
749 your machine has an FPA or floating point co-processor podule.
750
751 You may say N here if you are going to load the Acorn FPEmulator
752 early in the bootup.
753
754config FPE_NWFPE_XP
755 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +0000756 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 help
758 Say Y to include 80-bit support in the kernel floating-point
759 emulator. Otherwise, only 32 and 64-bit support is compiled in.
760 Note that gcc does not generate 80-bit operations by default,
761 so in most cases this option only enlarges the size of the
762 floating point emulator without any good reason.
763
764 You almost surely want to say N here.
765
766config FPE_FASTFPE
767 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000768 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 ---help---
770 Say Y here to include the FAST floating point emulator in the kernel.
771 This is an experimental much faster emulator which now also has full
772 precision for the mantissa. It does not support any exceptions.
773 It is very simple, and approximately 3-6 times faster than NWFPE.
774
775 It should be sufficient for most programs. It may be not suitable
776 for scientific calculations, but you have to check this for yourself.
777 If you do not feel you need a faster FP emulation you should better
778 choose NWFPE.
779
780config VFP
781 bool "VFP-format floating point maths"
782 depends on CPU_V6 || CPU_ARM926T
783 help
784 Say Y to include VFP support code in the kernel. This is needed
785 if your hardware includes a VFP unit.
786
787 Please see <file:Documentation/arm/VFP/release-notes.txt> for
788 release notes and additional status information.
789
790 Say N if your target does not have VFP hardware.
791
792endmenu
793
794menu "Userspace binary formats"
795
796source "fs/Kconfig.binfmt"
797
798config ARTHUR
799 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +0000800 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 help
802 Say Y here to include the kernel code necessary if you want to run
803 Acorn RISC OS/Arthur binaries under Linux. This code is still very
804 experimental; if this sounds frightening, say N and sleep in peace.
805 You can also say M here to compile this support as a module (which
806 will be called arthur).
807
808endmenu
809
810menu "Power management options"
811
Russell Kingeceab4a2005-11-15 11:31:41 +0000812source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814config APM
815 tristate "Advanced Power Management Emulation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 ---help---
817 APM is a BIOS specification for saving power using several different
818 techniques. This is mostly useful for battery powered laptops with
819 APM compliant BIOSes. If you say Y here, the system time will be
820 reset after a RESUME operation, the /proc/apm device will provide
821 battery status information, and user-space programs will receive
822 notification of APM "events" (e.g. battery status change).
823
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 In order to use APM, you will need supporting software. For location
825 and more information, read <file:Documentation/pm.txt> and the
826 Battery Powered Linux mini-HOWTO, available from
827 <http://www.tldp.org/docs.html#howto>.
828
829 This driver does not spin down disk drives (see the hdparm(8)
830 manpage ("man 8 hdparm") for that), and it doesn't turn off
831 VESA-compliant "green" monitors.
832
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833 Generally, if you don't have a battery in your machine, there isn't
834 much point in using this driver and you should say N. If you get
835 random kernel OOPSes or reboots that don't seem to be related to
836 anything, try disabling/enabling this option (or disabling/enabling
837 APM in your BIOS).
838
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839endmenu
840
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700841source "net/Kconfig"
842
Linus Torvalds1da177e2005-04-16 15:20:36 -0700843menu "Device Drivers"
844
845source "drivers/base/Kconfig"
846
Pavel Machekc35bf4a2005-11-12 20:25:25 +0000847source "drivers/connector/Kconfig"
848
Linus Torvalds1da177e2005-04-16 15:20:36 -0700849if ALIGNMENT_TRAP
850source "drivers/mtd/Kconfig"
851endif
852
853source "drivers/parport/Kconfig"
854
855source "drivers/pnp/Kconfig"
856
857source "drivers/block/Kconfig"
858
859source "drivers/acorn/block/Kconfig"
860
Lennert Buytenhek3f7e5812006-09-18 23:10:26 +0100861if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
David Brownellbb011b82005-06-12 23:26:05 +0100862 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100863 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
864 || ARCH_IXP23XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865source "drivers/ide/Kconfig"
866endif
867
868source "drivers/scsi/Kconfig"
869
870source "drivers/md/Kconfig"
871
872source "drivers/message/fusion/Kconfig"
873
874source "drivers/ieee1394/Kconfig"
875
876source "drivers/message/i2o/Kconfig"
877
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700878source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879
880source "drivers/isdn/Kconfig"
881
882# input before char - char/joystick depends on it. As does USB.
883
884source "drivers/input/Kconfig"
885
886source "drivers/char/Kconfig"
887
888source "drivers/i2c/Kconfig"
889
David Brownell8ae12a02006-01-08 13:34:19 -0800890source "drivers/spi/Kconfig"
891
Alessandro Zummo04916c02006-03-10 22:30:01 +0000892source "drivers/w1/Kconfig"
893
Jean Delvaread2f9312005-07-02 18:15:49 +0200894source "drivers/hwmon/Kconfig"
895
Linus Torvalds1da177e2005-04-16 15:20:36 -0700896#source "drivers/l3/Kconfig"
897
898source "drivers/misc/Kconfig"
899
Russell Kinga4e137a2005-08-18 10:06:59 +0100900source "drivers/mfd/Kconfig"
901
Richard Purdiec72a1d62006-03-31 02:31:04 -0800902source "drivers/leds/Kconfig"
903
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904source "drivers/media/Kconfig"
905
906source "drivers/video/Kconfig"
907
908source "sound/Kconfig"
909
910source "drivers/usb/Kconfig"
911
912source "drivers/mmc/Kconfig"
913
Alessandro Zummo12b824f2006-03-27 01:16:35 -0800914source "drivers/rtc/Kconfig"
915
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916endmenu
917
918source "fs/Kconfig"
919
920source "arch/arm/oprofile/Kconfig"
921
922source "arch/arm/Kconfig.debug"
923
924source "security/Kconfig"
925
926source "crypto/Kconfig"
927
928source "lib/Kconfig"