[ARM] 3417/1: add support for logicpd pxa270 card engine
[deliverable/linux.git] / arch / arm / Kconfig
CommitLineData
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1#
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
f6c8965a 13 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 14 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 15 manufactured, but legacy ARM-based PC hardware remains popular in
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16 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
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49config 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
a08b6b79
Z
63config ARCH_MAY_HAVE_PC_FDC
64 bool
65
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66config GENERIC_ISA_DMA
67 bool
68
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69config FIQ
70 bool
71
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72config ARCH_MTD_XIP
73 bool
74
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75source "init/Kconfig"
76
77menu "System Type"
78
79choice
80 prompt "ARM system type"
6a0e2430 81 default ARCH_VERSATILE
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82
83config ARCH_CLPS7500
84 bool "Cirrus-CL-PS7500FE"
85 select TIMER_ACORN
f7e68bbf 86 select ISA
f999b8bd
MM
87 help
88 Support for the Cirrus Logic PS7500FE system-on-a-chip.
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89
90config ARCH_CLPS711X
91 bool "CLPS711x/EP721x-based"
f999b8bd
MM
92 help
93 Support for Cirrus Logic 711x/721x based boards.
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94
95config ARCH_CO285
96 bool "Co-EBSA285"
97 select FOOTBRIDGE
98 select FOOTBRIDGE_ADDIN
f999b8bd
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99 help
100 Support for Intel's EBSA285 companion chip.
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101
102config ARCH_EBSA110
103 bool "EBSA-110"
f7e68bbf 104 select ISA
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105 help
106 This is an evaluation board for the StrongARM processor available
f6c8965a 107 from Digital. It has limited hardware on-board, including an
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108 Ethernet interface, two PCMCIA sockets, two serial ports and a
109 parallel port.
110
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111config 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
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118config ARCH_FOOTBRIDGE
119 bool "FootBridge"
120 select FOOTBRIDGE
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121 help
122 Support for systems based on the DC21285 companion chip
123 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
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124
125config ARCH_INTEGRATOR
126 bool "Integrator"
127 select ARM_AMBA
128 select ICST525
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129 help
130 Support for ARM's Integrator platform.
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131
132config ARCH_IOP3XX
133 bool "IOP3xx-based"
f7e68bbf 134 select PCI
f999b8bd
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135 help
136 Support for Intel's IOP3XX (XScale) family of processors.
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137
138config ARCH_IXP4XX
139 bool "IXP4xx-based"
140 select DMABOUNCE
f7e68bbf 141 select PCI
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142 help
143 Support for Intel's IXP4XX (XScale) family of processors.
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144
145config ARCH_IXP2000
146 bool "IXP2400/2800-based"
f7e68bbf 147 select PCI
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148 help
149 Support for Intel's IXP2400/2800 (XScale) family of processors.
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150
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"
034d2f5a 166 select ARCH_MTD_XIP
f999b8bd
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167 help
168 Support for Intel's PXA2XX processor line.
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169
170config ARCH_RPC
171 bool "RiscPC"
172 select ARCH_ACORN
173 select FIQ
174 select TIMER_ACORN
a08b6b79 175 select ARCH_MAY_HAVE_PC_FDC
065909b9 176 select ISA_DMA_API
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177 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"
f7e68bbf 183 select ISA
3cd9e19e 184 select ARCH_DISCONTIGMEM_ENABLE
034d2f5a 185 select ARCH_MTD_XIP
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186 help
187 Support for StrongARM 11x0 based boards.
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188
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
f6c8965a 194 the Samsung SMDK2410 development board (and derivatives).
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195
196config ARCH_SHARK
197 bool "Shark"
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198 select ISA
199 select ISA_DMA
200 select PCI
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201 help
202 Support for the StrongARM based Digital DNARD machine, also known
203 as "Shark" (<http://www.shark-linux.de/shark.html>).
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204
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"
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215 help
216 Support for TI's OMAP platform (OMAP1 and OMAP2).
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217
218config ARCH_VERSATILE
219 bool "Versatile"
220 select ARM_AMBA
fa0fe48f 221 select ARM_VIC
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222 select ICST307
223 help
224 This enables support for ARM Ltd Versatile board.
225
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226config ARCH_REALVIEW
227 bool "RealView"
228 select ARM_AMBA
229 select ICST307
230 help
231 This enables support for ARM Ltd RealView boards.
232
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233config ARCH_IMX
234 bool "IMX"
f999b8bd
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235 help
236 Support for Motorola's i.MX family of processors (MX1, MXL).
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237
238config ARCH_H720X
239 bool "Hynix-HMS720x-based"
065909b9 240 select ISA_DMA_API
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241 help
242 This enables support for systems based on the Hynix HMS720x
243
038c5b60
BN
244config ARCH_AAEC2000
245 bool "Agilent AAEC-2000 based"
049eb329 246 select ARM_AMBA
038c5b60
BN
247 help
248 This enables support for systems based on the Agilent AAEC-2000
249
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250config ARCH_AT91RM9200
251 bool "AT91RM9200"
252 help
f999b8bd
MM
253 Say Y here if you intend to run this kernel on an Atmel
254 AT91RM9200-based board.
73a59c1c 255
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256endchoice
257
258source "arch/arm/mach-clps711x/Kconfig"
259
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260source "arch/arm/mach-ep93xx/Kconfig"
261
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262source "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
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276source "arch/arm/plat-omap/Kconfig"
277
278source "arch/arm/mach-omap1/Kconfig"
1da177e4 279
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280source "arch/arm/mach-omap2/Kconfig"
281
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282source "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
038c5b60
BN
292source "arch/arm/mach-aaec2000/Kconfig"
293
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294source "arch/arm/mach-realview/Kconfig"
295
73a59c1c
SP
296source "arch/arm/mach-at91rm9200/Kconfig"
297
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298# 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
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326 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
065909b9 333# Select ISA DMA controller support
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334config ISA_DMA
335 bool
065909b9 336 select ISA_DMA_API
1da177e4 337
065909b9 338# Select ISA DMA interface
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AV
339config ISA_DMA_API
340 bool
5cae841b 341
1da177e4 342config PCI
c0da085a 343 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
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344 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)"
f6db449c 371 depends on EXPERIMENTAL && REALVIEW_MPCORE
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372 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
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383 See also the <file:Documentation/smp.txt>,
384 <file:Documentation/i386/IO-APIC.txt>,
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385 <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
a054a811
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396config 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
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RK
403config LOCAL_TIMERS
404 bool "Use local timer interrupts"
2a98beb6 405 depends on SMP && REALVIEW_MPCORE
37ee16ae
RK
406 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
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413config 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
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RK
426config 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
f2be64b3
TL
441 Please note that dynamic tick may affect the accuracy of
442 timekeeping on some platforms depending on the implementation.
569d2c34
NP
443 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
444 to have accurate timekeeping with dynamic tick.
f2be64b3 445
f8065813
RK
446config HZ
447 int
448 default 128 if ARCH_L7200
449 default 200 if ARCH_EBSA110 || ARCH_S3C2410
bfe65704 450 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
f8065813
RK
451 default 100
452
704bdda0
NP
453config 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
6c90c872 468config OABI_COMPAT
a73a3ff1 469 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 470 depends on AEABI && EXPERIMENTAL
6c90c872
NP
471 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
3f22ab27 485config ARCH_DISCONTIGMEM_ENABLE
1da177e4 486 bool
f7e68bbf 487 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
1da177e4
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488 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
3f22ab27
DH
494source "mm/Kconfig"
495
1da177e4
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496config 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 || \
73a59c1c
SP
502 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
503 ARCH_AT91RM9200
1da177e4
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504 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
ec6bced6 634if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
1da177e4
LT
635
636menu "CPU Frequency scaling"
637
638source "drivers/cpufreq/Kconfig"
639
640config CPU_FREQ_SA1100
641 bool
07c6d48f 642 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1da177e4
LT
643 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"
8993a44c 671 depends on !AEABI || OABI_COMPAT
1da177e4
LT
672 ---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"
bedf142b 683 depends on FPE_NWFPE
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LT
684 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)"
8993a44c 695 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
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LT
696 ---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"
704bdda0 727 depends on !AEABI
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LT
728 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
eceab4ac 739source "kernel/power/Kconfig"
1da177e4 740
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LT
741config APM
742 tristate "Advanced Power Management Emulation"
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LT
743 ---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
1da177e4
LT
751 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
1da177e4
LT
760 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
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LT
766endmenu
767
d5950b43
SR
768source "net/Kconfig"
769
1da177e4
LT
770menu "Device Drivers"
771
772source "drivers/base/Kconfig"
773
c35bf4a5
PM
774source "drivers/connector/Kconfig"
775
1da177e4
LT
776if 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
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DB
788if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
789 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
d56c524a 790 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
1da177e4
LT
791source "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
d5950b43 804source "drivers/net/Kconfig"
1da177e4
LT
805
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
8ae12a0d
DB
816source "drivers/spi/Kconfig"
817
04916c0e
AZ
818source "drivers/w1/Kconfig"
819
ad2f931d
JD
820source "drivers/hwmon/Kconfig"
821
1da177e4
LT
822#source "drivers/l3/Kconfig"
823
824source "drivers/misc/Kconfig"
825
a4e137ab
RK
826source "drivers/mfd/Kconfig"
827
1da177e4
LT
828source "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"
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