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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
11 help
12 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000013 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070014 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000015 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 Europe. There is an ARM Linux project with a web page at
17 <http://www.arm.linux.org.uk/>.
18
19config MMU
20 bool
21 default y
22
23config EISA
24 bool
25 ---help---
26 The Extended Industry Standard Architecture (EISA) bus was
27 developed as an open alternative to the IBM MicroChannel bus.
28
29 The EISA bus provided some of the features of the IBM MicroChannel
30 bus while maintaining backward compatibility with cards made for
31 the older ISA bus. The EISA bus saw limited use between 1988 and
32 1995 when it was made obsolete by the PCI bus.
33
34 Say Y here if you are building a kernel for an EISA-based machine.
35
36 Otherwise, say N.
37
38config SBUS
39 bool
40
41config MCA
42 bool
43 help
44 MicroChannel Architecture is found in some IBM PS/2 machines and
45 laptops. It is a bus system similar to PCI or ISA. See
46 <file:Documentation/mca.txt> (and especially the web page given
47 there) before attempting to build an MCA bus kernel.
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049config RWSEM_GENERIC_SPINLOCK
50 bool
51 default y
52
53config RWSEM_XCHGADD_ALGORITHM
54 bool
55
56config GENERIC_CALIBRATE_DELAY
57 bool
58 default y
59
60config GENERIC_BUST_SPINLOCK
61 bool
62
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +010063config ARCH_MAY_HAVE_PC_FDC
64 bool
65
Linus Torvalds1da177e2005-04-16 15:20:36 -070066config GENERIC_ISA_DMA
67 bool
68
Linus Torvalds1da177e2005-04-16 15:20:36 -070069config FIQ
70 bool
71
Al Viro034d2f52005-12-19 16:27:59 -050072config ARCH_MTD_XIP
73 bool
74
Linus Torvalds1da177e2005-04-16 15:20:36 -070075source "init/Kconfig"
76
77menu "System Type"
78
79choice
80 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +000081 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -070082
83config ARCH_CLPS7500
84 bool "Cirrus-CL-PS7500FE"
85 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +010086 select ISA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +000087 help
88 Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -070089
90config ARCH_CLPS711X
91 bool "CLPS711x/EP721x-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +000092 help
93 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95config ARCH_CO285
96 bool "Co-EBSA285"
97 select FOOTBRIDGE
98 select FOOTBRIDGE_ADDIN
Martin Michlmayrf999b8b2006-02-08 21:09:05 +000099 help
100 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101
102config ARCH_EBSA110
103 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100104 select ISA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 help
106 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000107 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108 Ethernet interface, two PCMCIA sockets, two serial ports and a
109 parallel port.
110
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000111config ARCH_EP93XX
112 bool "EP93xx-based"
113 select ARM_AMBA
114 select ARM_VIC
115 help
116 This enables support for the Cirrus EP93xx series of CPUs.
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118config ARCH_FOOTBRIDGE
119 bool "FootBridge"
120 select FOOTBRIDGE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000121 help
122 Support for systems based on the DC21285 companion chip
123 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124
125config ARCH_INTEGRATOR
126 bool "Integrator"
127 select ARM_AMBA
128 select ICST525
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000129 help
130 Support for ARM's Integrator platform.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131
132config ARCH_IOP3XX
133 bool "IOP3xx-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100134 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000135 help
136 Support for Intel's IOP3XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
138config ARCH_IXP4XX
139 bool "IXP4xx-based"
140 select DMABOUNCE
Russell Kingf7e68bb2005-05-05 14:49:01 +0100141 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000142 help
143 Support for Intel's IXP4XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
145config ARCH_IXP2000
146 bool "IXP2400/2800-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100147 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000148 help
149 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
151config ARCH_L7200
152 bool "LinkUp-L7200"
153 select FIQ
154 help
155 Say Y here if you intend to run this kernel on a LinkUp Systems
156 L7200 Software Development Board which uses an ARM720T processor.
157 Information on this board can be obtained at:
158
159 <http://www.linkupsys.com/>
160
161 If you have any questions or comments about the Linux kernel port
162 to this board, send e-mail to <sjhill@cotw.com>.
163
164config ARCH_PXA
165 bool "PXA2xx-based"
Al Viro034d2f52005-12-19 16:27:59 -0500166 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000167 help
168 Support for Intel's PXA2XX processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
170config ARCH_RPC
171 bool "RiscPC"
172 select ARCH_ACORN
173 select FIQ
174 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100175 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000176 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177 help
178 On the Acorn Risc-PC, Linux can support the internal IDE disk and
179 CD-ROM interface, serial and parallel port, and the floppy drive.
180
181config ARCH_SA1100
182 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100183 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100184 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500185 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000186 help
187 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
189config ARCH_S3C2410
190 bool "Samsung S3C2410"
191 help
192 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
193 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000194 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196config ARCH_SHARK
197 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100198 select ISA
199 select ISA_DMA
200 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000201 help
202 Support for the StrongARM based Digital DNARD machine, also known
203 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204
205config ARCH_LH7A40X
206 bool "Sharp LH7A40X"
207 help
208 Say Y here for systems based on one of the Sharp LH7A40X
209 System on a Chip processors. These CPUs include an ARM922T
210 core with a wide array of integrated devices for
211 hand-held and low-power applications.
212
213config ARCH_OMAP
214 bool "TI OMAP"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000215 help
216 Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217
218config ARCH_VERSATILE
219 bool "Versatile"
220 select ARM_AMBA
Russell Kingfa0fe482006-01-13 21:30:48 +0000221 select ARM_VIC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 select ICST307
223 help
224 This enables support for ARM Ltd Versatile board.
225
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000226config ARCH_REALVIEW
227 bool "RealView"
228 select ARM_AMBA
229 select ICST307
230 help
231 This enables support for ARM Ltd RealView boards.
232
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233config ARCH_IMX
234 bool "IMX"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000235 help
236 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237
238config ARCH_H720X
239 bool "Hynix-HMS720x-based"
Russell King065909b2006-01-04 15:44:16 +0000240 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 help
242 This enables support for systems based on the Hynix HMS720x
243
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100244config ARCH_AAEC2000
245 bool "Agilent AAEC-2000 based"
Bellido Nicolas049eb322005-10-28 16:51:44 +0100246 select ARM_AMBA
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100247 help
248 This enables support for systems based on the Agilent AAEC-2000
249
SAN People73a59c12006-01-09 17:05:41 +0000250config ARCH_AT91RM9200
251 bool "AT91RM9200"
252 help
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000253 Say Y here if you intend to run this kernel on an Atmel
254 AT91RM9200-based board.
SAN People73a59c12006-01-09 17:05:41 +0000255
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256endchoice
257
258source "arch/arm/mach-clps711x/Kconfig"
259
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000260source "arch/arm/mach-ep93xx/Kconfig"
261
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262source "arch/arm/mach-footbridge/Kconfig"
263
264source "arch/arm/mach-integrator/Kconfig"
265
266source "arch/arm/mach-iop3xx/Kconfig"
267
268source "arch/arm/mach-ixp4xx/Kconfig"
269
270source "arch/arm/mach-ixp2000/Kconfig"
271
272source "arch/arm/mach-pxa/Kconfig"
273
274source "arch/arm/mach-sa1100/Kconfig"
275
Tony Lindgrend48af152005-07-10 19:58:17 +0100276source "arch/arm/plat-omap/Kconfig"
277
278source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279
Tony Lindgren1dbae812005-11-10 14:26:51 +0000280source "arch/arm/mach-omap2/Kconfig"
281
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282source "arch/arm/mach-s3c2410/Kconfig"
283
284source "arch/arm/mach-lh7a40x/Kconfig"
285
286source "arch/arm/mach-imx/Kconfig"
287
288source "arch/arm/mach-h720x/Kconfig"
289
290source "arch/arm/mach-versatile/Kconfig"
291
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100292source "arch/arm/mach-aaec2000/Kconfig"
293
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000294source "arch/arm/mach-realview/Kconfig"
295
SAN People73a59c12006-01-09 17:05:41 +0000296source "arch/arm/mach-at91rm9200/Kconfig"
297
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298# Definitions to make life easier
299config ARCH_ACORN
300 bool
301
302source arch/arm/mm/Kconfig
303
304# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
305config XSCALE_PMU
306 bool
307 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
308 default y
309
310endmenu
311
312source "arch/arm/common/Kconfig"
313
314config FORCE_MAX_ZONEORDER
315 int
316 depends on SA1111
317 default "9"
318
319menu "Bus support"
320
321config ARM_AMBA
322 bool
323
324config ISA
325 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 help
327 Find out whether you have ISA slots on your motherboard. ISA is the
328 name of a bus system, i.e. the way the CPU talks to the other stuff
329 inside your box. Other bus systems are PCI, EISA, MicroChannel
330 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
331 newer boards don't support it. If you have ISA, say Y, otherwise N.
332
Russell King065909b2006-01-04 15:44:16 +0000333# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334config ISA_DMA
335 bool
Russell King065909b2006-01-04 15:44:16 +0000336 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337
Russell King065909b2006-01-04 15:44:16 +0000338# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100339config ISA_DMA_API
340 bool
Al Viro5cae8412005-05-04 05:39:22 +0100341
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342config PCI
Catalin Marinasc0da0852005-06-20 18:51:06 +0100343 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
Linus Torvalds1da177e2005-04-16 15:20:36 -0700344 help
345 Find out whether you have a PCI motherboard. PCI is the name of a
346 bus system, i.e. the way the CPU talks to the other stuff inside
347 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
348 VESA. If you have PCI, say Y, otherwise N.
349
350 The PCI-HOWTO, available from
351 <http://www.tldp.org/docs.html#howto>, contains valuable
352 information about which PCI hardware does work under Linux and which
353 doesn't.
354
355# Select the host bridge type
356config PCI_HOST_VIA82C505
357 bool
358 depends on PCI && ARCH_SHARK
359 default y
360
361source "drivers/pci/Kconfig"
362
363source "drivers/pcmcia/Kconfig"
364
365endmenu
366
367menu "Kernel Features"
368
369config SMP
370 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell Kingf6db4492005-11-07 21:30:21 +0000371 depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 help
373 This enables support for systems with more than one CPU. If you have
374 a system with only one CPU, like most personal computers, say N. If
375 you have a system with more than one CPU, say Y.
376
377 If you say N here, the kernel will run on single and multiprocessor
378 machines, but will use only one CPU of a multiprocessor machine. If
379 you say Y here, the kernel will run on many, but not all, single
380 processor machines. On a single processor machine, the kernel will
381 run faster if you say N here.
382
Arthur Othieno12c62c22005-09-10 00:26:22 -0700383 See also the <file:Documentation/smp.txt>,
384 <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
386 <http://www.linuxdoc.org/docs.html#howto>.
387
388 If you don't know what to do here, say N.
389
390config NR_CPUS
391 int "Maximum number of CPUs (2-32)"
392 range 2 32
393 depends on SMP
394 default "4"
395
Russell Kinga054a812005-11-02 22:24:33 +0000396config HOTPLUG_CPU
397 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
398 depends on SMP && HOTPLUG && EXPERIMENTAL
399 help
400 Say Y here to experiment with turning CPUs off and on. CPUs
401 can be controlled through /sys/devices/system/cpu.
402
Russell King37ee16a2005-11-08 19:08:05 +0000403config LOCAL_TIMERS
404 bool "Use local timer interrupts"
Russell King2a98beb2005-11-09 10:50:29 +0000405 depends on SMP && REALVIEW_MPCORE
Russell King37ee16a2005-11-08 19:08:05 +0000406 default y
407 help
408 Enable support for local timers on SMP platforms, rather then the
409 legacy IPI broadcast method. Local timers allows the system
410 accounting to be spread across the timer interval, preventing a
411 "thundering herd" at every timer tick.
412
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413config PREEMPT
414 bool "Preemptible Kernel (EXPERIMENTAL)"
415 depends on EXPERIMENTAL
416 help
417 This option reduces the latency of the kernel when reacting to
418 real-time or interactive events by allowing a low priority process to
419 be preempted even if it is in kernel mode executing a system call.
420 This allows applications to run more reliably even when the system is
421 under load.
422
423 Say Y here if you are building a kernel for a desktop, embedded
424 or real-time system. Say N if you are unsure.
425
Russell King8749af62005-06-25 19:39:45 +0100426config NO_IDLE_HZ
427 bool "Dynamic tick timer"
428 help
429 Select this option if you want to disable continuous timer ticks
430 and have them programmed to occur as required. This option saves
431 power as the system can remain in idle state for longer.
432
433 By default dynamic tick is disabled during the boot, and can be
434 manually enabled with:
435
436 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
437
438 Alternatively, if you want dynamic tick automatically enabled
439 during boot, pass "dyntick=enable" via the kernel command string.
440
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100441 Please note that dynamic tick may affect the accuracy of
442 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100443 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
444 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100445
Russell Kingf8065812006-03-02 22:41:59 +0000446config HZ
447 int
448 default 128 if ARCH_L7200
449 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000450 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
Russell Kingf8065812006-03-02 22:41:59 +0000451 default 100
452
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000453config AEABI
454 bool "Use the ARM EABI to compile the kernel"
455 help
456 This option allows for the kernel to be compiled using the latest
457 ARM ABI (aka EABI). This is only useful if you are using a user
458 space environment that is also compiled with EABI.
459
460 Since there are major incompatibilities between the legacy ABI and
461 EABI, especially with regard to structure member alignment, this
462 option also changes the kernel syscall calling convention to
463 disambiguate both ABIs and allow for backward compatibility support
464 (selected with CONFIG_OABI_COMPAT).
465
466 To use this you need GCC version 4.0.0 or later.
467
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000468config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000469 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000470 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000471 default y
472 help
473 This option preserves the old syscall interface along with the
474 new (ARM EABI) one. It also provides a compatibility layer to
475 intercept syscalls that have structure arguments which layout
476 in memory differs between the legacy ABI and the new ARM EABI
477 (only for non "thumb" binaries). This option adds a tiny
478 overhead to all syscalls and produces a slightly larger kernel.
479 If you know you'll be using only pure EABI user space then you
480 can say N here. If this option is not selected and you attempt
481 to execute a legacy ABI binary then the result will be
482 UNPREDICTABLE (in fact it can be predicted that it won't work
483 at all). If in doubt say Y.
484
Dave Hansen3f22ab22005-06-23 00:07:43 -0700485config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100487 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 help
489 Say Y to support efficient handling of discontiguous physical memory,
490 for architectures which are either NUMA (Non-Uniform Memory Access)
491 or have huge holes in the physical address space for other reasons.
492 See <file:Documentation/vm/numa> for more.
493
Dave Hansen3f22ab22005-06-23 00:07:43 -0700494source "mm/Kconfig"
495
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496config LEDS
497 bool "Timer and CPU usage LEDs"
498 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
499 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
500 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
501 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000502 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
503 ARCH_AT91RM9200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 help
505 If you say Y here, the LEDs on your machine will be used
506 to provide useful information about your current system status.
507
508 If you are compiling a kernel for a NetWinder or EBSA-285, you will
509 be able to select which LEDs are active using the options below. If
510 you are compiling a kernel for the EBSA-110 or the LART however, the
511 red LED will simply flash regularly to indicate that the system is
512 still functional. It is safe to say Y here if you have a CATS
513 system, but the driver will do nothing.
514
515config LEDS_TIMER
516 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
517 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
518 depends on LEDS
519 default y if ARCH_EBSA110
520 help
521 If you say Y here, one of the system LEDs (the green one on the
522 NetWinder, the amber one on the EBSA285, or the red one on the LART)
523 will flash regularly to indicate that the system is still
524 operational. This is mainly useful to kernel hackers who are
525 debugging unstable kernels.
526
527 The LART uses the same LED for both Timer LED and CPU usage LED
528 functions. You may choose to use both, but the Timer LED function
529 will overrule the CPU usage LED.
530
531config LEDS_CPU
532 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
533 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
534 depends on LEDS
535 help
536 If you say Y here, the red LED will be used to give a good real
537 time indication of CPU usage, by lighting whenever the idle task
538 is not currently executing.
539
540 The LART uses the same LED for both Timer LED and CPU usage LED
541 functions. You may choose to use both, but the Timer LED function
542 will overrule the CPU usage LED.
543
544config ALIGNMENT_TRAP
545 bool
546 default y if !ARCH_EBSA110
547 help
548 ARM processors can not fetch/store information which is not
549 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
550 address divisible by 4. On 32-bit ARM processors, these non-aligned
551 fetch/store instructions will be emulated in software if you say
552 here, which has a severe performance impact. This is necessary for
553 correct operation of some network protocols. With an IP-only
554 configuration it is safe to say N, otherwise say Y.
555
556endmenu
557
558menu "Boot options"
559
560# Compressed boot loader in ROM. Yes, we really want to ask about
561# TEXT and BSS so we preserve their values in the config files.
562config ZBOOT_ROM_TEXT
563 hex "Compressed ROM boot loader base address"
564 default "0"
565 help
566 The physical address at which the ROM-able zImage is to be
567 placed in the target. Platforms which normally make use of
568 ROM-able zImage formats normally set this to a suitable
569 value in their defconfig file.
570
571 If ZBOOT_ROM is not enabled, this has no effect.
572
573config ZBOOT_ROM_BSS
574 hex "Compressed ROM boot loader BSS address"
575 default "0"
576 help
577 The base address of 64KiB of read/write memory in the target
578 for the ROM-able zImage, which must be available while the
579 decompressor is running. Platforms which normally make use of
580 ROM-able zImage formats normally set this to a suitable
581 value in their defconfig file.
582
583 If ZBOOT_ROM is not enabled, this has no effect.
584
585config ZBOOT_ROM
586 bool "Compressed boot loader in ROM/flash"
587 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
588 help
589 Say Y here if you intend to execute your compressed kernel image
590 (zImage) directly from ROM or flash. If unsure, say N.
591
592config CMDLINE
593 string "Default kernel command string"
594 default ""
595 help
596 On some architectures (EBSA110 and CATS), there is currently no way
597 for the boot loader to pass arguments to the kernel. For these
598 architectures, you should supply some command-line options at build
599 time by entering them here. As a minimum, you should specify the
600 memory size and the root device (e.g., mem=64M root=/dev/nfs).
601
602config XIP_KERNEL
603 bool "Kernel Execute-In-Place from ROM"
604 depends on !ZBOOT_ROM
605 help
606 Execute-In-Place allows the kernel to run from non-volatile storage
607 directly addressable by the CPU, such as NOR flash. This saves RAM
608 space since the text section of the kernel is not loaded from flash
609 to RAM. Read-write sections, such as the data section and stack,
610 are still copied to RAM. The XIP kernel is not compressed since
611 it has to run directly from flash, so it will take more space to
612 store it. The flash address used to link the kernel object files,
613 and for storing it, is configuration dependent. Therefore, if you
614 say Y here, you must know the proper physical address where to
615 store the kernel image depending on your own flash memory usage.
616
617 Also note that the make target becomes "make xipImage" rather than
618 "make zImage" or "make Image". The final kernel binary to put in
619 ROM memory will be arch/arm/boot/xipImage.
620
621 If unsure, say N.
622
623config XIP_PHYS_ADDR
624 hex "XIP Kernel Physical Location"
625 depends on XIP_KERNEL
626 default "0x00080000"
627 help
628 This is the physical address in your flash memory the kernel will
629 be linked for and stored to. This address is dependent on your
630 own flash usage.
631
632endmenu
633
Tony Lindgrenec6bced2005-07-10 19:58:20 +0100634if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635
636menu "CPU Frequency scaling"
637
638source "drivers/cpufreq/Kconfig"
639
640config CPU_FREQ_SA1100
641 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100642 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 -0700643 default y
644
645config CPU_FREQ_SA1110
646 bool
647 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
648 default y
649
650config CPU_FREQ_INTEGRATOR
651 tristate "CPUfreq driver for ARM Integrator CPUs"
652 depends on ARCH_INTEGRATOR && CPU_FREQ
653 default y
654 help
655 This enables the CPUfreq driver for ARM Integrator CPUs.
656
657 For details, take a look at <file:Documentation/cpu-freq>.
658
659 If in doubt, say Y.
660
661endmenu
662
663endif
664
665menu "Floating point emulation"
666
667comment "At least one emulation must be selected"
668
669config FPE_NWFPE
670 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000671 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 ---help---
673 Say Y to include the NWFPE floating point emulator in the kernel.
674 This is necessary to run most binaries. Linux does not currently
675 support floating point hardware so you need to say Y here even if
676 your machine has an FPA or floating point co-processor podule.
677
678 You may say N here if you are going to load the Acorn FPEmulator
679 early in the bootup.
680
681config FPE_NWFPE_XP
682 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +0000683 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 help
685 Say Y to include 80-bit support in the kernel floating-point
686 emulator. Otherwise, only 32 and 64-bit support is compiled in.
687 Note that gcc does not generate 80-bit operations by default,
688 so in most cases this option only enlarges the size of the
689 floating point emulator without any good reason.
690
691 You almost surely want to say N here.
692
693config FPE_FASTFPE
694 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000695 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 ---help---
697 Say Y here to include the FAST floating point emulator in the kernel.
698 This is an experimental much faster emulator which now also has full
699 precision for the mantissa. It does not support any exceptions.
700 It is very simple, and approximately 3-6 times faster than NWFPE.
701
702 It should be sufficient for most programs. It may be not suitable
703 for scientific calculations, but you have to check this for yourself.
704 If you do not feel you need a faster FP emulation you should better
705 choose NWFPE.
706
707config VFP
708 bool "VFP-format floating point maths"
709 depends on CPU_V6 || CPU_ARM926T
710 help
711 Say Y to include VFP support code in the kernel. This is needed
712 if your hardware includes a VFP unit.
713
714 Please see <file:Documentation/arm/VFP/release-notes.txt> for
715 release notes and additional status information.
716
717 Say N if your target does not have VFP hardware.
718
719endmenu
720
721menu "Userspace binary formats"
722
723source "fs/Kconfig.binfmt"
724
725config ARTHUR
726 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000727 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728 help
729 Say Y here to include the kernel code necessary if you want to run
730 Acorn RISC OS/Arthur binaries under Linux. This code is still very
731 experimental; if this sounds frightening, say N and sleep in peace.
732 You can also say M here to compile this support as a module (which
733 will be called arthur).
734
735endmenu
736
737menu "Power management options"
738
Russell Kingeceab4a2005-11-15 11:31:41 +0000739source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741config APM
742 tristate "Advanced Power Management Emulation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 ---help---
744 APM is a BIOS specification for saving power using several different
745 techniques. This is mostly useful for battery powered laptops with
746 APM compliant BIOSes. If you say Y here, the system time will be
747 reset after a RESUME operation, the /proc/apm device will provide
748 battery status information, and user-space programs will receive
749 notification of APM "events" (e.g. battery status change).
750
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 In order to use APM, you will need supporting software. For location
752 and more information, read <file:Documentation/pm.txt> and the
753 Battery Powered Linux mini-HOWTO, available from
754 <http://www.tldp.org/docs.html#howto>.
755
756 This driver does not spin down disk drives (see the hdparm(8)
757 manpage ("man 8 hdparm") for that), and it doesn't turn off
758 VESA-compliant "green" monitors.
759
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 Generally, if you don't have a battery in your machine, there isn't
761 much point in using this driver and you should say N. If you get
762 random kernel OOPSes or reboots that don't seem to be related to
763 anything, try disabling/enabling this option (or disabling/enabling
764 APM in your BIOS).
765
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766endmenu
767
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700768source "net/Kconfig"
769
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770menu "Device Drivers"
771
772source "drivers/base/Kconfig"
773
Pavel Machekc35bf4a2005-11-12 20:25:25 +0000774source "drivers/connector/Kconfig"
775
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776if ALIGNMENT_TRAP
777source "drivers/mtd/Kconfig"
778endif
779
780source "drivers/parport/Kconfig"
781
782source "drivers/pnp/Kconfig"
783
784source "drivers/block/Kconfig"
785
786source "drivers/acorn/block/Kconfig"
787
David Brownellbb011b82005-06-12 23:26:05 +0100788if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
789 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
Russell Kingd56c5242005-11-04 17:28:34 +0000790 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791source "drivers/ide/Kconfig"
792endif
793
794source "drivers/scsi/Kconfig"
795
796source "drivers/md/Kconfig"
797
798source "drivers/message/fusion/Kconfig"
799
800source "drivers/ieee1394/Kconfig"
801
802source "drivers/message/i2o/Kconfig"
803
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700804source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805
806source "drivers/isdn/Kconfig"
807
808# input before char - char/joystick depends on it. As does USB.
809
810source "drivers/input/Kconfig"
811
812source "drivers/char/Kconfig"
813
814source "drivers/i2c/Kconfig"
815
David Brownell8ae12a02006-01-08 13:34:19 -0800816source "drivers/spi/Kconfig"
817
Alessandro Zummo04916c02006-03-10 22:30:01 +0000818source "drivers/w1/Kconfig"
819
Jean Delvaread2f9312005-07-02 18:15:49 +0200820source "drivers/hwmon/Kconfig"
821
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822#source "drivers/l3/Kconfig"
823
824source "drivers/misc/Kconfig"
825
Russell Kinga4e137a2005-08-18 10:06:59 +0100826source "drivers/mfd/Kconfig"
827
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828source "drivers/media/Kconfig"
829
830source "drivers/video/Kconfig"
831
832source "sound/Kconfig"
833
834source "drivers/usb/Kconfig"
835
836source "drivers/mmc/Kconfig"
837
838endmenu
839
840source "fs/Kconfig"
841
842source "arch/arm/oprofile/Kconfig"
843
844source "arch/arm/Kconfig.debug"
845
846source "security/Kconfig"
847
848source "crypto/Kconfig"
849
850source "lib/Kconfig"