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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
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100151config ARCH_IXP23XX
152 bool "IXP23XX-based"
153 select PCI
154 help
155 Support for Intel's IXP23xx (XScale) family of processors.
156
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157config ARCH_L7200
158 bool "LinkUp-L7200"
159 select FIQ
160 help
161 Say Y here if you intend to run this kernel on a LinkUp Systems
162 L7200 Software Development Board which uses an ARM720T processor.
163 Information on this board can be obtained at:
164
165 <http://www.linkupsys.com/>
166
167 If you have any questions or comments about the Linux kernel port
168 to this board, send e-mail to <sjhill@cotw.com>.
169
170config ARCH_PXA
171 bool "PXA2xx-based"
Al Viro034d2f52005-12-19 16:27:59 -0500172 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000173 help
174 Support for Intel's PXA2XX processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175
176config ARCH_RPC
177 bool "RiscPC"
178 select ARCH_ACORN
179 select FIQ
180 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100181 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000182 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183 help
184 On the Acorn Risc-PC, Linux can support the internal IDE disk and
185 CD-ROM interface, serial and parallel port, and the floppy drive.
186
187config ARCH_SA1100
188 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100189 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100190 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500191 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000192 help
193 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
195config ARCH_S3C2410
196 bool "Samsung S3C2410"
197 help
198 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
199 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000200 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
202config ARCH_SHARK
203 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100204 select ISA
205 select ISA_DMA
206 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000207 help
208 Support for the StrongARM based Digital DNARD machine, also known
209 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210
211config ARCH_LH7A40X
212 bool "Sharp LH7A40X"
213 help
214 Say Y here for systems based on one of the Sharp LH7A40X
215 System on a Chip processors. These CPUs include an ARM922T
216 core with a wide array of integrated devices for
217 hand-held and low-power applications.
218
219config ARCH_OMAP
220 bool "TI OMAP"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000221 help
222 Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223
224config ARCH_VERSATILE
225 bool "Versatile"
226 select ARM_AMBA
Russell Kingfa0fe482006-01-13 21:30:48 +0000227 select ARM_VIC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 select ICST307
229 help
230 This enables support for ARM Ltd Versatile board.
231
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000232config ARCH_REALVIEW
233 bool "RealView"
234 select ARM_AMBA
235 select ICST307
236 help
237 This enables support for ARM Ltd RealView boards.
238
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239config ARCH_IMX
240 bool "IMX"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000241 help
242 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
244config ARCH_H720X
245 bool "Hynix-HMS720x-based"
Russell King065909b2006-01-04 15:44:16 +0000246 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 help
248 This enables support for systems based on the Hynix HMS720x
249
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100250config ARCH_AAEC2000
251 bool "Agilent AAEC-2000 based"
Bellido Nicolas049eb322005-10-28 16:51:44 +0100252 select ARM_AMBA
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100253 help
254 This enables support for systems based on the Agilent AAEC-2000
255
SAN People73a59c12006-01-09 17:05:41 +0000256config ARCH_AT91RM9200
257 bool "AT91RM9200"
258 help
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000259 Say Y here if you intend to run this kernel on an Atmel
260 AT91RM9200-based board.
SAN People73a59c12006-01-09 17:05:41 +0000261
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262endchoice
263
264source "arch/arm/mach-clps711x/Kconfig"
265
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000266source "arch/arm/mach-ep93xx/Kconfig"
267
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268source "arch/arm/mach-footbridge/Kconfig"
269
270source "arch/arm/mach-integrator/Kconfig"
271
272source "arch/arm/mach-iop3xx/Kconfig"
273
274source "arch/arm/mach-ixp4xx/Kconfig"
275
276source "arch/arm/mach-ixp2000/Kconfig"
277
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100278source "arch/arm/mach-ixp23xx/Kconfig"
279
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280source "arch/arm/mach-pxa/Kconfig"
281
282source "arch/arm/mach-sa1100/Kconfig"
283
Tony Lindgrend48af152005-07-10 19:58:17 +0100284source "arch/arm/plat-omap/Kconfig"
285
286source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
Tony Lindgren1dbae812005-11-10 14:26:51 +0000288source "arch/arm/mach-omap2/Kconfig"
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290source "arch/arm/mach-s3c2410/Kconfig"
291
292source "arch/arm/mach-lh7a40x/Kconfig"
293
294source "arch/arm/mach-imx/Kconfig"
295
296source "arch/arm/mach-h720x/Kconfig"
297
298source "arch/arm/mach-versatile/Kconfig"
299
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100300source "arch/arm/mach-aaec2000/Kconfig"
301
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000302source "arch/arm/mach-realview/Kconfig"
303
SAN People73a59c12006-01-09 17:05:41 +0000304source "arch/arm/mach-at91rm9200/Kconfig"
305
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306# Definitions to make life easier
307config ARCH_ACORN
308 bool
309
310source arch/arm/mm/Kconfig
311
312# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
313config XSCALE_PMU
314 bool
315 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
316 default y
317
318endmenu
319
320source "arch/arm/common/Kconfig"
321
322config FORCE_MAX_ZONEORDER
323 int
324 depends on SA1111
325 default "9"
326
327menu "Bus support"
328
329config ARM_AMBA
330 bool
331
332config ISA
333 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 help
335 Find out whether you have ISA slots on your motherboard. ISA is the
336 name of a bus system, i.e. the way the CPU talks to the other stuff
337 inside your box. Other bus systems are PCI, EISA, MicroChannel
338 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
339 newer boards don't support it. If you have ISA, say Y, otherwise N.
340
Russell King065909b2006-01-04 15:44:16 +0000341# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342config ISA_DMA
343 bool
Russell King065909b2006-01-04 15:44:16 +0000344 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
Russell King065909b2006-01-04 15:44:16 +0000346# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100347config ISA_DMA_API
348 bool
Al Viro5cae8412005-05-04 05:39:22 +0100349
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350config PCI
Catalin Marinasc0da0852005-06-20 18:51:06 +0100351 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
Linus Torvalds1da177e2005-04-16 15:20:36 -0700352 help
353 Find out whether you have a PCI motherboard. PCI is the name of a
354 bus system, i.e. the way the CPU talks to the other stuff inside
355 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
356 VESA. If you have PCI, say Y, otherwise N.
357
358 The PCI-HOWTO, available from
359 <http://www.tldp.org/docs.html#howto>, contains valuable
360 information about which PCI hardware does work under Linux and which
361 doesn't.
362
363# Select the host bridge type
364config PCI_HOST_VIA82C505
365 bool
366 depends on PCI && ARCH_SHARK
367 default y
368
369source "drivers/pci/Kconfig"
370
371source "drivers/pcmcia/Kconfig"
372
373endmenu
374
375menu "Kernel Features"
376
377config SMP
378 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell Kingf6db4492005-11-07 21:30:21 +0000379 depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 help
381 This enables support for systems with more than one CPU. If you have
382 a system with only one CPU, like most personal computers, say N. If
383 you have a system with more than one CPU, say Y.
384
385 If you say N here, the kernel will run on single and multiprocessor
386 machines, but will use only one CPU of a multiprocessor machine. If
387 you say Y here, the kernel will run on many, but not all, single
388 processor machines. On a single processor machine, the kernel will
389 run faster if you say N here.
390
Arthur Othieno12c62c22005-09-10 00:26:22 -0700391 See also the <file:Documentation/smp.txt>,
392 <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
394 <http://www.linuxdoc.org/docs.html#howto>.
395
396 If you don't know what to do here, say N.
397
398config NR_CPUS
399 int "Maximum number of CPUs (2-32)"
400 range 2 32
401 depends on SMP
402 default "4"
403
Russell Kinga054a812005-11-02 22:24:33 +0000404config HOTPLUG_CPU
405 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
406 depends on SMP && HOTPLUG && EXPERIMENTAL
407 help
408 Say Y here to experiment with turning CPUs off and on. CPUs
409 can be controlled through /sys/devices/system/cpu.
410
Russell King37ee16a2005-11-08 19:08:05 +0000411config LOCAL_TIMERS
412 bool "Use local timer interrupts"
Russell King2a98beb2005-11-09 10:50:29 +0000413 depends on SMP && REALVIEW_MPCORE
Russell King37ee16a2005-11-08 19:08:05 +0000414 default y
415 help
416 Enable support for local timers on SMP platforms, rather then the
417 legacy IPI broadcast method. Local timers allows the system
418 accounting to be spread across the timer interval, preventing a
419 "thundering herd" at every timer tick.
420
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421config PREEMPT
422 bool "Preemptible Kernel (EXPERIMENTAL)"
423 depends on EXPERIMENTAL
424 help
425 This option reduces the latency of the kernel when reacting to
426 real-time or interactive events by allowing a low priority process to
427 be preempted even if it is in kernel mode executing a system call.
428 This allows applications to run more reliably even when the system is
429 under load.
430
431 Say Y here if you are building a kernel for a desktop, embedded
432 or real-time system. Say N if you are unsure.
433
Russell King8749af62005-06-25 19:39:45 +0100434config NO_IDLE_HZ
435 bool "Dynamic tick timer"
436 help
437 Select this option if you want to disable continuous timer ticks
438 and have them programmed to occur as required. This option saves
439 power as the system can remain in idle state for longer.
440
441 By default dynamic tick is disabled during the boot, and can be
442 manually enabled with:
443
444 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
445
446 Alternatively, if you want dynamic tick automatically enabled
447 during boot, pass "dyntick=enable" via the kernel command string.
448
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100449 Please note that dynamic tick may affect the accuracy of
450 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100451 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
452 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100453
Russell Kingf8065812006-03-02 22:41:59 +0000454config HZ
455 int
456 default 128 if ARCH_L7200
457 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000458 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
Russell Kingf8065812006-03-02 22:41:59 +0000459 default 100
460
Nicolas Pitre704bdda02006-01-14 16:33:50 +0000461config AEABI
462 bool "Use the ARM EABI to compile the kernel"
463 help
464 This option allows for the kernel to be compiled using the latest
465 ARM ABI (aka EABI). This is only useful if you are using a user
466 space environment that is also compiled with EABI.
467
468 Since there are major incompatibilities between the legacy ABI and
469 EABI, especially with regard to structure member alignment, this
470 option also changes the kernel syscall calling convention to
471 disambiguate both ABIs and allow for backward compatibility support
472 (selected with CONFIG_OABI_COMPAT).
473
474 To use this you need GCC version 4.0.0 or later.
475
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000476config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000477 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000478 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000479 default y
480 help
481 This option preserves the old syscall interface along with the
482 new (ARM EABI) one. It also provides a compatibility layer to
483 intercept syscalls that have structure arguments which layout
484 in memory differs between the legacy ABI and the new ARM EABI
485 (only for non "thumb" binaries). This option adds a tiny
486 overhead to all syscalls and produces a slightly larger kernel.
487 If you know you'll be using only pure EABI user space then you
488 can say N here. If this option is not selected and you attempt
489 to execute a legacy ABI binary then the result will be
490 UNPREDICTABLE (in fact it can be predicted that it won't work
491 at all). If in doubt say Y.
492
Dave Hansen3f22ab22005-06-23 00:07:43 -0700493config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100495 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 help
497 Say Y to support efficient handling of discontiguous physical memory,
498 for architectures which are either NUMA (Non-Uniform Memory Access)
499 or have huge holes in the physical address space for other reasons.
500 See <file:Documentation/vm/numa> for more.
501
Dave Hansen3f22ab22005-06-23 00:07:43 -0700502source "mm/Kconfig"
503
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504config LEDS
505 bool "Timer and CPU usage LEDs"
506 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
507 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
508 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
509 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000510 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
511 ARCH_AT91RM9200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 help
513 If you say Y here, the LEDs on your machine will be used
514 to provide useful information about your current system status.
515
516 If you are compiling a kernel for a NetWinder or EBSA-285, you will
517 be able to select which LEDs are active using the options below. If
518 you are compiling a kernel for the EBSA-110 or the LART however, the
519 red LED will simply flash regularly to indicate that the system is
520 still functional. It is safe to say Y here if you have a CATS
521 system, but the driver will do nothing.
522
523config LEDS_TIMER
524 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
525 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
526 depends on LEDS
527 default y if ARCH_EBSA110
528 help
529 If you say Y here, one of the system LEDs (the green one on the
530 NetWinder, the amber one on the EBSA285, or the red one on the LART)
531 will flash regularly to indicate that the system is still
532 operational. This is mainly useful to kernel hackers who are
533 debugging unstable kernels.
534
535 The LART uses the same LED for both Timer LED and CPU usage LED
536 functions. You may choose to use both, but the Timer LED function
537 will overrule the CPU usage LED.
538
539config LEDS_CPU
540 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
541 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
542 depends on LEDS
543 help
544 If you say Y here, the red LED will be used to give a good real
545 time indication of CPU usage, by lighting whenever the idle task
546 is not currently executing.
547
548 The LART uses the same LED for both Timer LED and CPU usage LED
549 functions. You may choose to use both, but the Timer LED function
550 will overrule the CPU usage LED.
551
552config ALIGNMENT_TRAP
553 bool
554 default y if !ARCH_EBSA110
555 help
556 ARM processors can not fetch/store information which is not
557 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
558 address divisible by 4. On 32-bit ARM processors, these non-aligned
559 fetch/store instructions will be emulated in software if you say
560 here, which has a severe performance impact. This is necessary for
561 correct operation of some network protocols. With an IP-only
562 configuration it is safe to say N, otherwise say Y.
563
564endmenu
565
566menu "Boot options"
567
568# Compressed boot loader in ROM. Yes, we really want to ask about
569# TEXT and BSS so we preserve their values in the config files.
570config ZBOOT_ROM_TEXT
571 hex "Compressed ROM boot loader base address"
572 default "0"
573 help
574 The physical address at which the ROM-able zImage is to be
575 placed in the target. Platforms which normally make use of
576 ROM-able zImage formats normally set this to a suitable
577 value in their defconfig file.
578
579 If ZBOOT_ROM is not enabled, this has no effect.
580
581config ZBOOT_ROM_BSS
582 hex "Compressed ROM boot loader BSS address"
583 default "0"
584 help
585 The base address of 64KiB of read/write memory in the target
586 for the ROM-able zImage, which must be available while the
587 decompressor is running. Platforms which normally make use of
588 ROM-able zImage formats normally set this to a suitable
589 value in their defconfig file.
590
591 If ZBOOT_ROM is not enabled, this has no effect.
592
593config ZBOOT_ROM
594 bool "Compressed boot loader in ROM/flash"
595 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
596 help
597 Say Y here if you intend to execute your compressed kernel image
598 (zImage) directly from ROM or flash. If unsure, say N.
599
600config CMDLINE
601 string "Default kernel command string"
602 default ""
603 help
604 On some architectures (EBSA110 and CATS), there is currently no way
605 for the boot loader to pass arguments to the kernel. For these
606 architectures, you should supply some command-line options at build
607 time by entering them here. As a minimum, you should specify the
608 memory size and the root device (e.g., mem=64M root=/dev/nfs).
609
610config XIP_KERNEL
611 bool "Kernel Execute-In-Place from ROM"
612 depends on !ZBOOT_ROM
613 help
614 Execute-In-Place allows the kernel to run from non-volatile storage
615 directly addressable by the CPU, such as NOR flash. This saves RAM
616 space since the text section of the kernel is not loaded from flash
617 to RAM. Read-write sections, such as the data section and stack,
618 are still copied to RAM. The XIP kernel is not compressed since
619 it has to run directly from flash, so it will take more space to
620 store it. The flash address used to link the kernel object files,
621 and for storing it, is configuration dependent. Therefore, if you
622 say Y here, you must know the proper physical address where to
623 store the kernel image depending on your own flash memory usage.
624
625 Also note that the make target becomes "make xipImage" rather than
626 "make zImage" or "make Image". The final kernel binary to put in
627 ROM memory will be arch/arm/boot/xipImage.
628
629 If unsure, say N.
630
631config XIP_PHYS_ADDR
632 hex "XIP Kernel Physical Location"
633 depends on XIP_KERNEL
634 default "0x00080000"
635 help
636 This is the physical address in your flash memory the kernel will
637 be linked for and stored to. This address is dependent on your
638 own flash usage.
639
640endmenu
641
Tony Lindgrenec6bced2005-07-10 19:58:20 +0100642if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643
644menu "CPU Frequency scaling"
645
646source "drivers/cpufreq/Kconfig"
647
648config CPU_FREQ_SA1100
649 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100650 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 -0700651 default y
652
653config CPU_FREQ_SA1110
654 bool
655 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
656 default y
657
658config CPU_FREQ_INTEGRATOR
659 tristate "CPUfreq driver for ARM Integrator CPUs"
660 depends on ARCH_INTEGRATOR && CPU_FREQ
661 default y
662 help
663 This enables the CPUfreq driver for ARM Integrator CPUs.
664
665 For details, take a look at <file:Documentation/cpu-freq>.
666
667 If in doubt, say Y.
668
669endmenu
670
671endif
672
673menu "Floating point emulation"
674
675comment "At least one emulation must be selected"
676
677config FPE_NWFPE
678 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000679 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 ---help---
681 Say Y to include the NWFPE floating point emulator in the kernel.
682 This is necessary to run most binaries. Linux does not currently
683 support floating point hardware so you need to say Y here even if
684 your machine has an FPA or floating point co-processor podule.
685
686 You may say N here if you are going to load the Acorn FPEmulator
687 early in the bootup.
688
689config FPE_NWFPE_XP
690 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +0000691 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 help
693 Say Y to include 80-bit support in the kernel floating-point
694 emulator. Otherwise, only 32 and 64-bit support is compiled in.
695 Note that gcc does not generate 80-bit operations by default,
696 so in most cases this option only enlarges the size of the
697 floating point emulator without any good reason.
698
699 You almost surely want to say N here.
700
701config FPE_FASTFPE
702 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000703 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700704 ---help---
705 Say Y here to include the FAST floating point emulator in the kernel.
706 This is an experimental much faster emulator which now also has full
707 precision for the mantissa. It does not support any exceptions.
708 It is very simple, and approximately 3-6 times faster than NWFPE.
709
710 It should be sufficient for most programs. It may be not suitable
711 for scientific calculations, but you have to check this for yourself.
712 If you do not feel you need a faster FP emulation you should better
713 choose NWFPE.
714
715config VFP
716 bool "VFP-format floating point maths"
717 depends on CPU_V6 || CPU_ARM926T
718 help
719 Say Y to include VFP support code in the kernel. This is needed
720 if your hardware includes a VFP unit.
721
722 Please see <file:Documentation/arm/VFP/release-notes.txt> for
723 release notes and additional status information.
724
725 Say N if your target does not have VFP hardware.
726
727endmenu
728
729menu "Userspace binary formats"
730
731source "fs/Kconfig.binfmt"
732
733config ARTHUR
734 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +0000735 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 help
737 Say Y here to include the kernel code necessary if you want to run
738 Acorn RISC OS/Arthur binaries under Linux. This code is still very
739 experimental; if this sounds frightening, say N and sleep in peace.
740 You can also say M here to compile this support as a module (which
741 will be called arthur).
742
743endmenu
744
745menu "Power management options"
746
Russell Kingeceab4a2005-11-15 11:31:41 +0000747source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700748
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749config APM
750 tristate "Advanced Power Management Emulation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 ---help---
752 APM is a BIOS specification for saving power using several different
753 techniques. This is mostly useful for battery powered laptops with
754 APM compliant BIOSes. If you say Y here, the system time will be
755 reset after a RESUME operation, the /proc/apm device will provide
756 battery status information, and user-space programs will receive
757 notification of APM "events" (e.g. battery status change).
758
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 In order to use APM, you will need supporting software. For location
760 and more information, read <file:Documentation/pm.txt> and the
761 Battery Powered Linux mini-HOWTO, available from
762 <http://www.tldp.org/docs.html#howto>.
763
764 This driver does not spin down disk drives (see the hdparm(8)
765 manpage ("man 8 hdparm") for that), and it doesn't turn off
766 VESA-compliant "green" monitors.
767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 Generally, if you don't have a battery in your machine, there isn't
769 much point in using this driver and you should say N. If you get
770 random kernel OOPSes or reboots that don't seem to be related to
771 anything, try disabling/enabling this option (or disabling/enabling
772 APM in your BIOS).
773
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774endmenu
775
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700776source "net/Kconfig"
777
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778menu "Device Drivers"
779
780source "drivers/base/Kconfig"
781
Pavel Machekc35bf4a2005-11-12 20:25:25 +0000782source "drivers/connector/Kconfig"
783
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784if ALIGNMENT_TRAP
785source "drivers/mtd/Kconfig"
786endif
787
788source "drivers/parport/Kconfig"
789
790source "drivers/pnp/Kconfig"
791
792source "drivers/block/Kconfig"
793
794source "drivers/acorn/block/Kconfig"
795
David Brownellbb011b82005-06-12 23:26:05 +0100796if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
797 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100798 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
799 || ARCH_IXP23XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800source "drivers/ide/Kconfig"
801endif
802
803source "drivers/scsi/Kconfig"
804
805source "drivers/md/Kconfig"
806
807source "drivers/message/fusion/Kconfig"
808
809source "drivers/ieee1394/Kconfig"
810
811source "drivers/message/i2o/Kconfig"
812
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700813source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814
815source "drivers/isdn/Kconfig"
816
817# input before char - char/joystick depends on it. As does USB.
818
819source "drivers/input/Kconfig"
820
821source "drivers/char/Kconfig"
822
823source "drivers/i2c/Kconfig"
824
David Brownell8ae12a02006-01-08 13:34:19 -0800825source "drivers/spi/Kconfig"
826
Alessandro Zummo04916c02006-03-10 22:30:01 +0000827source "drivers/w1/Kconfig"
828
Jean Delvaread2f9312005-07-02 18:15:49 +0200829source "drivers/hwmon/Kconfig"
830
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831#source "drivers/l3/Kconfig"
832
833source "drivers/misc/Kconfig"
834
Russell Kinga4e137a2005-08-18 10:06:59 +0100835source "drivers/mfd/Kconfig"
836
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837source "drivers/media/Kconfig"
838
839source "drivers/video/Kconfig"
840
841source "sound/Kconfig"
842
843source "drivers/usb/Kconfig"
844
845source "drivers/mmc/Kconfig"
846
847endmenu
848
849source "fs/Kconfig"
850
851source "arch/arm/oprofile/Kconfig"
852
853source "arch/arm/Kconfig.debug"
854
855source "security/Kconfig"
856
857source "crypto/Kconfig"
858
859source "lib/Kconfig"