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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux Kernel Configuration"
7
8config ARM
9 bool
10 default y
Alessandro Zummo12b824f2006-03-27 01:16:35 -080011 select RTC_LIB
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 help
13 The ARM series is a line of low-power-consumption RISC chip designs
Martin Michlmayrf6c89652006-02-08 21:09:07 +000014 licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds1da177e2005-04-16 15:20:36 -070015 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
Martin Michlmayrf6c89652006-02-08 21:09:07 +000016 manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 Europe. There is an ARM Linux project with a web page at
18 <http://www.arm.linux.org.uk/>.
19
20config MMU
21 bool
22 default y
23
24config EISA
25 bool
26 ---help---
27 The Extended Industry Standard Architecture (EISA) bus was
28 developed as an open alternative to the IBM MicroChannel bus.
29
30 The EISA bus provided some of the features of the IBM MicroChannel
31 bus while maintaining backward compatibility with cards made for
32 the older ISA bus. The EISA bus saw limited use between 1988 and
33 1995 when it was made obsolete by the PCI bus.
34
35 Say Y here if you are building a kernel for an EISA-based machine.
36
37 Otherwise, say N.
38
39config SBUS
40 bool
41
42config MCA
43 bool
44 help
45 MicroChannel Architecture is found in some IBM PS/2 machines and
46 laptops. It is a bus system similar to PCI or ISA. See
47 <file:Documentation/mca.txt> (and especially the web page given
48 there) before attempting to build an MCA bus kernel.
49
Linus Torvalds1da177e2005-04-16 15:20:36 -070050config RWSEM_GENERIC_SPINLOCK
51 bool
52 default y
53
54config RWSEM_XCHGADD_ALGORITHM
55 bool
56
Akinobu Mitab89c3b12006-03-26 01:39:19 -080057config GENERIC_HWEIGHT
58 bool
59 default y
60
Linus Torvalds1da177e2005-04-16 15:20:36 -070061config GENERIC_CALIBRATE_DELAY
62 bool
63 default y
64
65config GENERIC_BUST_SPINLOCK
66 bool
67
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +010068config ARCH_MAY_HAVE_PC_FDC
69 bool
70
Linus Torvalds1da177e2005-04-16 15:20:36 -070071config GENERIC_ISA_DMA
72 bool
73
Linus Torvalds1da177e2005-04-16 15:20:36 -070074config FIQ
75 bool
76
Al Viro034d2f52005-12-19 16:27:59 -050077config ARCH_MTD_XIP
78 bool
79
Hyok S. Choic760fc12006-03-27 15:18:50 +010080config VECTORS_BASE
81 hex
82 default 0xffff0000 if MMU
83 default DRAM_BASE if REMAP_VECTORS_TO_RAM
84 default 0x00000000
85 help
86 The base address of exception vectors.
87
Linus Torvalds1da177e2005-04-16 15:20:36 -070088source "init/Kconfig"
89
90menu "System Type"
91
92choice
93 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +000094 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
Deepak Saxena4af6fee2006-06-20 21:30:44 +010096config ARCH_AAEC2000
97 bool "Agilent AAEC-2000 based"
98 select ARM_AMBA
99 help
100 This enables support for systems based on the Agilent AAEC-2000
101
102config ARCH_INTEGRATOR
103 bool "ARM Ltd. Integrator family"
104 select ARM_AMBA
105 select ICST525
106 help
107 Support for ARM's Integrator platform.
108
109config ARCH_REALVIEW
110 bool "ARM Ltd. RealView family"
111 select ARM_AMBA
112 select ICST307
113 help
114 This enables support for ARM Ltd RealView boards.
115
116config ARCH_VERSATILE
117 bool "ARM Ltd. Versatile family"
118 select ARM_AMBA
119 select ARM_VIC
120 select ICST307
121 help
122 This enables support for ARM Ltd Versatile board.
123
124config ARCH_AT91RM9200
125 bool "Atmel AT91RM9200"
126 help
127 Say Y here if you intend to run this kernel on an Atmel
128 AT91RM9200-based board.
129
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130config ARCH_CLPS7500
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100131 bool "Cirrus CL-PS7500FE"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +0100133 select ISA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000134 help
135 Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
137config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100138 bool "Cirrus Logic CLPS711x/EP721x-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000139 help
140 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
142config ARCH_CO285
143 bool "Co-EBSA285"
144 select FOOTBRIDGE
145 select FOOTBRIDGE_ADDIN
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000146 help
147 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148
149config ARCH_EBSA110
150 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100151 select ISA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152 help
153 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000154 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 Ethernet interface, two PCMCIA sockets, two serial ports and a
156 parallel port.
157
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000158config ARCH_EP93XX
159 bool "EP93xx-based"
160 select ARM_AMBA
161 select ARM_VIC
162 help
163 This enables support for the Cirrus EP93xx series of CPUs.
164
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165config ARCH_FOOTBRIDGE
166 bool "FootBridge"
167 select FOOTBRIDGE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000168 help
169 Support for systems based on the DC21285 companion chip
170 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100172config ARCH_NETX
173 bool "Hilscher NetX based"
174 select ARM_VIC
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000175 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100176 This enables support for systems based on the Hilscher NetX Soc
177
178config ARCH_H720X
179 bool "Hynix HMS720x-based"
180 select ISA_DMA_API
181 help
182 This enables support for systems based on the Hynix HMS720x
183
184config ARCH_IMX
185 bool "IMX"
186 help
187 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188
189config ARCH_IOP3XX
190 bool "IOP3xx-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100191 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000192 help
193 Support for Intel's IOP3XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
195config ARCH_IXP4XX
196 bool "IXP4xx-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000197 help
198 Support for Intel's IXP4XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199
200config ARCH_IXP2000
201 bool "IXP2400/2800-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100202 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000203 help
204 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100206config ARCH_IXP23XX
207 bool "IXP23XX-based"
208 select PCI
209 help
210 Support for Intel's IXP23xx (XScale) family of processors.
211
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212config ARCH_L7200
213 bool "LinkUp-L7200"
214 select FIQ
215 help
216 Say Y here if you intend to run this kernel on a LinkUp Systems
217 L7200 Software Development Board which uses an ARM720T processor.
218 Information on this board can be obtained at:
219
220 <http://www.linkupsys.com/>
221
222 If you have any questions or comments about the Linux kernel port
223 to this board, send e-mail to <sjhill@cotw.com>.
224
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100225config ARCH_PNX4008
226 bool "Philips Nexperia PNX4008 Mobile"
227 help
228 This enables support for Philips PNX4008 mobile platform.
229
Linus Torvalds1da177e2005-04-16 15:20:36 -0700230config ARCH_PXA
231 bool "PXA2xx-based"
Al Viro034d2f52005-12-19 16:27:59 -0500232 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000233 help
234 Support for Intel's PXA2XX processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
236config ARCH_RPC
237 bool "RiscPC"
238 select ARCH_ACORN
239 select FIQ
240 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100241 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000242 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 help
244 On the Acorn Risc-PC, Linux can support the internal IDE disk and
245 CD-ROM interface, serial and parallel port, and the floppy drive.
246
247config ARCH_SA1100
248 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100249 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100250 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500251 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000252 help
253 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
255config ARCH_S3C2410
256 bool "Samsung S3C2410"
257 help
258 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
259 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000260 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261
262config ARCH_SHARK
263 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100264 select ISA
265 select ISA_DMA
266 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000267 help
268 Support for the StrongARM based Digital DNARD machine, also known
269 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270
271config ARCH_LH7A40X
272 bool "Sharp LH7A40X"
273 help
274 Say Y here for systems based on one of the Sharp LH7A40X
275 System on a Chip processors. These CPUs include an ARM922T
276 core with a wide array of integrated devices for
277 hand-held and low-power applications.
278
279config ARCH_OMAP
280 bool "TI OMAP"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000281 help
282 Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284endchoice
285
286source "arch/arm/mach-clps711x/Kconfig"
287
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000288source "arch/arm/mach-ep93xx/Kconfig"
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290source "arch/arm/mach-footbridge/Kconfig"
291
292source "arch/arm/mach-integrator/Kconfig"
293
294source "arch/arm/mach-iop3xx/Kconfig"
295
296source "arch/arm/mach-ixp4xx/Kconfig"
297
298source "arch/arm/mach-ixp2000/Kconfig"
299
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100300source "arch/arm/mach-ixp23xx/Kconfig"
301
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302source "arch/arm/mach-pxa/Kconfig"
303
304source "arch/arm/mach-sa1100/Kconfig"
305
Tony Lindgrend48af152005-07-10 19:58:17 +0100306source "arch/arm/plat-omap/Kconfig"
307
308source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309
Tony Lindgren1dbae812005-11-10 14:26:51 +0000310source "arch/arm/mach-omap2/Kconfig"
311
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312source "arch/arm/mach-s3c2410/Kconfig"
313
314source "arch/arm/mach-lh7a40x/Kconfig"
315
316source "arch/arm/mach-imx/Kconfig"
317
318source "arch/arm/mach-h720x/Kconfig"
319
320source "arch/arm/mach-versatile/Kconfig"
321
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100322source "arch/arm/mach-aaec2000/Kconfig"
323
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000324source "arch/arm/mach-realview/Kconfig"
325
SAN People73a59c12006-01-09 17:05:41 +0000326source "arch/arm/mach-at91rm9200/Kconfig"
327
Sascha Hauerbb6d8c82006-06-19 15:27:53 +0100328source "arch/arm/mach-netx/Kconfig"
329
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330# Definitions to make life easier
331config ARCH_ACORN
332 bool
333
334source arch/arm/mm/Kconfig
335
336# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
337config XSCALE_PMU
338 bool
339 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
340 default y
341
342endmenu
343
344source "arch/arm/common/Kconfig"
345
346config FORCE_MAX_ZONEORDER
347 int
348 depends on SA1111
349 default "9"
350
351menu "Bus support"
352
353config ARM_AMBA
354 bool
355
356config ISA
357 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 help
359 Find out whether you have ISA slots on your motherboard. ISA is the
360 name of a bus system, i.e. the way the CPU talks to the other stuff
361 inside your box. Other bus systems are PCI, EISA, MicroChannel
362 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
363 newer boards don't support it. If you have ISA, say Y, otherwise N.
364
Russell King065909b2006-01-04 15:44:16 +0000365# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366config ISA_DMA
367 bool
Russell King065909b2006-01-04 15:44:16 +0000368 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369
Russell King065909b2006-01-04 15:44:16 +0000370# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100371config ISA_DMA_API
372 bool
Al Viro5cae8412005-05-04 05:39:22 +0100373
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374config PCI
Milan Svoboda68939122006-06-25 22:12:12 +0100375 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 help
377 Find out whether you have a PCI motherboard. PCI is the name of a
378 bus system, i.e. the way the CPU talks to the other stuff inside
379 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
380 VESA. If you have PCI, say Y, otherwise N.
381
382 The PCI-HOWTO, available from
383 <http://www.tldp.org/docs.html#howto>, contains valuable
384 information about which PCI hardware does work under Linux and which
385 doesn't.
386
387# Select the host bridge type
388config PCI_HOST_VIA82C505
389 bool
390 depends on PCI && ARCH_SHARK
391 default y
392
393source "drivers/pci/Kconfig"
394
395source "drivers/pcmcia/Kconfig"
396
397endmenu
398
399menu "Kernel Features"
400
401config SMP
402 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell Kingf6db4492005-11-07 21:30:21 +0000403 depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 help
405 This enables support for systems with more than one CPU. If you have
406 a system with only one CPU, like most personal computers, say N. If
407 you have a system with more than one CPU, say Y.
408
409 If you say N here, the kernel will run on single and multiprocessor
410 machines, but will use only one CPU of a multiprocessor machine. If
411 you say Y here, the kernel will run on many, but not all, single
412 processor machines. On a single processor machine, the kernel will
413 run faster if you say N here.
414
Arthur Othieno12c62c22005-09-10 00:26:22 -0700415 See also the <file:Documentation/smp.txt>,
416 <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
418 <http://www.linuxdoc.org/docs.html#howto>.
419
420 If you don't know what to do here, say N.
421
422config NR_CPUS
423 int "Maximum number of CPUs (2-32)"
424 range 2 32
425 depends on SMP
426 default "4"
427
Russell Kinga054a812005-11-02 22:24:33 +0000428config HOTPLUG_CPU
429 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
430 depends on SMP && HOTPLUG && EXPERIMENTAL
431 help
432 Say Y here to experiment with turning CPUs off and on. CPUs
433 can be controlled through /sys/devices/system/cpu.
434
Russell King37ee16a2005-11-08 19:08:05 +0000435config LOCAL_TIMERS
436 bool "Use local timer interrupts"
Russell King2a98beb2005-11-09 10:50:29 +0000437 depends on SMP && REALVIEW_MPCORE
Russell King37ee16a2005-11-08 19:08:05 +0000438 default y
439 help
440 Enable support for local timers on SMP platforms, rather then the
441 legacy IPI broadcast method. Local timers allows the system
442 accounting to be spread across the timer interval, preventing a
443 "thundering herd" at every timer tick.
444
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445config PREEMPT
446 bool "Preemptible Kernel (EXPERIMENTAL)"
447 depends on EXPERIMENTAL
448 help
449 This option reduces the latency of the kernel when reacting to
450 real-time or interactive events by allowing a low priority process to
451 be preempted even if it is in kernel mode executing a system call.
452 This allows applications to run more reliably even when the system is
453 under load.
454
455 Say Y here if you are building a kernel for a desktop, embedded
456 or real-time system. Say N if you are unsure.
457
Russell King8749af62005-06-25 19:39:45 +0100458config NO_IDLE_HZ
459 bool "Dynamic tick timer"
460 help
461 Select this option if you want to disable continuous timer ticks
462 and have them programmed to occur as required. This option saves
463 power as the system can remain in idle state for longer.
464
465 By default dynamic tick is disabled during the boot, and can be
466 manually enabled with:
467
468 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
469
470 Alternatively, if you want dynamic tick automatically enabled
471 during boot, pass "dyntick=enable" via the kernel command string.
472
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100473 Please note that dynamic tick may affect the accuracy of
474 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100475 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
476 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100477
Russell Kingf8065812006-03-02 22:41:59 +0000478config HZ
479 int
480 default 128 if ARCH_L7200
481 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000482 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
Russell Kingf8065812006-03-02 22:41:59 +0000483 default 100
484
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000485config AEABI
486 bool "Use the ARM EABI to compile the kernel"
487 help
488 This option allows for the kernel to be compiled using the latest
489 ARM ABI (aka EABI). This is only useful if you are using a user
490 space environment that is also compiled with EABI.
491
492 Since there are major incompatibilities between the legacy ABI and
493 EABI, especially with regard to structure member alignment, this
494 option also changes the kernel syscall calling convention to
495 disambiguate both ABIs and allow for backward compatibility support
496 (selected with CONFIG_OABI_COMPAT).
497
498 To use this you need GCC version 4.0.0 or later.
499
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000500config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000501 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000502 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000503 default y
504 help
505 This option preserves the old syscall interface along with the
506 new (ARM EABI) one. It also provides a compatibility layer to
507 intercept syscalls that have structure arguments which layout
508 in memory differs between the legacy ABI and the new ARM EABI
509 (only for non "thumb" binaries). This option adds a tiny
510 overhead to all syscalls and produces a slightly larger kernel.
511 If you know you'll be using only pure EABI user space then you
512 can say N here. If this option is not selected and you attempt
513 to execute a legacy ABI binary then the result will be
514 UNPREDICTABLE (in fact it can be predicted that it won't work
515 at all). If in doubt say Y.
516
Dave Hansen3f22ab22005-06-23 00:07:43 -0700517config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100519 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700520 help
521 Say Y to support efficient handling of discontiguous physical memory,
522 for architectures which are either NUMA (Non-Uniform Memory Access)
523 or have huge holes in the physical address space for other reasons.
524 See <file:Documentation/vm/numa> for more.
525
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700526config NODES_SHIFT
527 int
528 default "4" if ARCH_LH7A40X
529 default "2"
530 depends on NEED_MULTIPLE_NODES
531
Dave Hansen3f22ab22005-06-23 00:07:43 -0700532source "mm/Kconfig"
533
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534config LEDS
535 bool "Timer and CPU usage LEDs"
536 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
537 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
538 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
539 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000540 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
541 ARCH_AT91RM9200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542 help
543 If you say Y here, the LEDs on your machine will be used
544 to provide useful information about your current system status.
545
546 If you are compiling a kernel for a NetWinder or EBSA-285, you will
547 be able to select which LEDs are active using the options below. If
548 you are compiling a kernel for the EBSA-110 or the LART however, the
549 red LED will simply flash regularly to indicate that the system is
550 still functional. It is safe to say Y here if you have a CATS
551 system, but the driver will do nothing.
552
553config LEDS_TIMER
554 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
555 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
556 depends on LEDS
557 default y if ARCH_EBSA110
558 help
559 If you say Y here, one of the system LEDs (the green one on the
560 NetWinder, the amber one on the EBSA285, or the red one on the LART)
561 will flash regularly to indicate that the system is still
562 operational. This is mainly useful to kernel hackers who are
563 debugging unstable kernels.
564
565 The LART uses the same LED for both Timer LED and CPU usage LED
566 functions. You may choose to use both, but the Timer LED function
567 will overrule the CPU usage LED.
568
569config LEDS_CPU
570 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
571 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
572 depends on LEDS
573 help
574 If you say Y here, the red LED will be used to give a good real
575 time indication of CPU usage, by lighting whenever the idle task
576 is not currently executing.
577
578 The LART uses the same LED for both Timer LED and CPU usage LED
579 functions. You may choose to use both, but the Timer LED function
580 will overrule the CPU usage LED.
581
582config ALIGNMENT_TRAP
583 bool
584 default y if !ARCH_EBSA110
585 help
586 ARM processors can not fetch/store information which is not
587 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
588 address divisible by 4. On 32-bit ARM processors, these non-aligned
589 fetch/store instructions will be emulated in software if you say
590 here, which has a severe performance impact. This is necessary for
591 correct operation of some network protocols. With an IP-only
592 configuration it is safe to say N, otherwise say Y.
593
594endmenu
595
596menu "Boot options"
597
598# Compressed boot loader in ROM. Yes, we really want to ask about
599# TEXT and BSS so we preserve their values in the config files.
600config ZBOOT_ROM_TEXT
601 hex "Compressed ROM boot loader base address"
602 default "0"
603 help
604 The physical address at which the ROM-able zImage is to be
605 placed in the target. Platforms which normally make use of
606 ROM-able zImage formats normally set this to a suitable
607 value in their defconfig file.
608
609 If ZBOOT_ROM is not enabled, this has no effect.
610
611config ZBOOT_ROM_BSS
612 hex "Compressed ROM boot loader BSS address"
613 default "0"
614 help
615 The base address of 64KiB of read/write memory in the target
616 for the ROM-able zImage, which must be available while the
617 decompressor is running. Platforms which normally make use of
618 ROM-able zImage formats normally set this to a suitable
619 value in their defconfig file.
620
621 If ZBOOT_ROM is not enabled, this has no effect.
622
623config ZBOOT_ROM
624 bool "Compressed boot loader in ROM/flash"
625 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
626 help
627 Say Y here if you intend to execute your compressed kernel image
628 (zImage) directly from ROM or flash. If unsure, say N.
629
630config CMDLINE
631 string "Default kernel command string"
632 default ""
633 help
634 On some architectures (EBSA110 and CATS), there is currently no way
635 for the boot loader to pass arguments to the kernel. For these
636 architectures, you should supply some command-line options at build
637 time by entering them here. As a minimum, you should specify the
638 memory size and the root device (e.g., mem=64M root=/dev/nfs).
639
640config XIP_KERNEL
641 bool "Kernel Execute-In-Place from ROM"
642 depends on !ZBOOT_ROM
643 help
644 Execute-In-Place allows the kernel to run from non-volatile storage
645 directly addressable by the CPU, such as NOR flash. This saves RAM
646 space since the text section of the kernel is not loaded from flash
647 to RAM. Read-write sections, such as the data section and stack,
648 are still copied to RAM. The XIP kernel is not compressed since
649 it has to run directly from flash, so it will take more space to
650 store it. The flash address used to link the kernel object files,
651 and for storing it, is configuration dependent. Therefore, if you
652 say Y here, you must know the proper physical address where to
653 store the kernel image depending on your own flash memory usage.
654
655 Also note that the make target becomes "make xipImage" rather than
656 "make zImage" or "make Image". The final kernel binary to put in
657 ROM memory will be arch/arm/boot/xipImage.
658
659 If unsure, say N.
660
661config XIP_PHYS_ADDR
662 hex "XIP Kernel Physical Location"
663 depends on XIP_KERNEL
664 default "0x00080000"
665 help
666 This is the physical address in your flash memory the kernel will
667 be linked for and stored to. This address is dependent on your
668 own flash usage.
669
670endmenu
671
Tony Lindgrenec6bced2005-07-10 19:58:20 +0100672if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700673
674menu "CPU Frequency scaling"
675
676source "drivers/cpufreq/Kconfig"
677
678config CPU_FREQ_SA1100
679 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100680 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 -0700681 default y
682
683config CPU_FREQ_SA1110
684 bool
685 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
686 default y
687
688config CPU_FREQ_INTEGRATOR
689 tristate "CPUfreq driver for ARM Integrator CPUs"
690 depends on ARCH_INTEGRATOR && CPU_FREQ
691 default y
692 help
693 This enables the CPUfreq driver for ARM Integrator CPUs.
694
695 For details, take a look at <file:Documentation/cpu-freq>.
696
697 If in doubt, say Y.
698
699endmenu
700
701endif
702
703menu "Floating point emulation"
704
705comment "At least one emulation must be selected"
706
707config FPE_NWFPE
708 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000709 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 ---help---
711 Say Y to include the NWFPE floating point emulator in the kernel.
712 This is necessary to run most binaries. Linux does not currently
713 support floating point hardware so you need to say Y here even if
714 your machine has an FPA or floating point co-processor podule.
715
716 You may say N here if you are going to load the Acorn FPEmulator
717 early in the bootup.
718
719config FPE_NWFPE_XP
720 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +0000721 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722 help
723 Say Y to include 80-bit support in the kernel floating-point
724 emulator. Otherwise, only 32 and 64-bit support is compiled in.
725 Note that gcc does not generate 80-bit operations by default,
726 so in most cases this option only enlarges the size of the
727 floating point emulator without any good reason.
728
729 You almost surely want to say N here.
730
731config FPE_FASTFPE
732 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000733 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 ---help---
735 Say Y here to include the FAST floating point emulator in the kernel.
736 This is an experimental much faster emulator which now also has full
737 precision for the mantissa. It does not support any exceptions.
738 It is very simple, and approximately 3-6 times faster than NWFPE.
739
740 It should be sufficient for most programs. It may be not suitable
741 for scientific calculations, but you have to check this for yourself.
742 If you do not feel you need a faster FP emulation you should better
743 choose NWFPE.
744
745config VFP
746 bool "VFP-format floating point maths"
747 depends on CPU_V6 || CPU_ARM926T
748 help
749 Say Y to include VFP support code in the kernel. This is needed
750 if your hardware includes a VFP unit.
751
752 Please see <file:Documentation/arm/VFP/release-notes.txt> for
753 release notes and additional status information.
754
755 Say N if your target does not have VFP hardware.
756
757endmenu
758
759menu "Userspace binary formats"
760
761source "fs/Kconfig.binfmt"
762
763config ARTHUR
764 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000765 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 help
767 Say Y here to include the kernel code necessary if you want to run
768 Acorn RISC OS/Arthur binaries under Linux. This code is still very
769 experimental; if this sounds frightening, say N and sleep in peace.
770 You can also say M here to compile this support as a module (which
771 will be called arthur).
772
773endmenu
774
775menu "Power management options"
776
Russell Kingeceab4a2005-11-15 11:31:41 +0000777source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779config APM
780 tristate "Advanced Power Management Emulation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 ---help---
782 APM is a BIOS specification for saving power using several different
783 techniques. This is mostly useful for battery powered laptops with
784 APM compliant BIOSes. If you say Y here, the system time will be
785 reset after a RESUME operation, the /proc/apm device will provide
786 battery status information, and user-space programs will receive
787 notification of APM "events" (e.g. battery status change).
788
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789 In order to use APM, you will need supporting software. For location
790 and more information, read <file:Documentation/pm.txt> and the
791 Battery Powered Linux mini-HOWTO, available from
792 <http://www.tldp.org/docs.html#howto>.
793
794 This driver does not spin down disk drives (see the hdparm(8)
795 manpage ("man 8 hdparm") for that), and it doesn't turn off
796 VESA-compliant "green" monitors.
797
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 Generally, if you don't have a battery in your machine, there isn't
799 much point in using this driver and you should say N. If you get
800 random kernel OOPSes or reboots that don't seem to be related to
801 anything, try disabling/enabling this option (or disabling/enabling
802 APM in your BIOS).
803
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804endmenu
805
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700806source "net/Kconfig"
807
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808menu "Device Drivers"
809
810source "drivers/base/Kconfig"
811
Pavel Machekc35bf4a2005-11-12 20:25:25 +0000812source "drivers/connector/Kconfig"
813
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814if ALIGNMENT_TRAP
815source "drivers/mtd/Kconfig"
816endif
817
818source "drivers/parport/Kconfig"
819
820source "drivers/pnp/Kconfig"
821
822source "drivers/block/Kconfig"
823
824source "drivers/acorn/block/Kconfig"
825
David Brownellbb011b82005-06-12 23:26:05 +0100826if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
827 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100828 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
829 || ARCH_IXP23XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830source "drivers/ide/Kconfig"
831endif
832
833source "drivers/scsi/Kconfig"
834
835source "drivers/md/Kconfig"
836
837source "drivers/message/fusion/Kconfig"
838
839source "drivers/ieee1394/Kconfig"
840
841source "drivers/message/i2o/Kconfig"
842
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700843source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844
845source "drivers/isdn/Kconfig"
846
847# input before char - char/joystick depends on it. As does USB.
848
849source "drivers/input/Kconfig"
850
851source "drivers/char/Kconfig"
852
853source "drivers/i2c/Kconfig"
854
David Brownell8ae12a02006-01-08 13:34:19 -0800855source "drivers/spi/Kconfig"
856
Alessandro Zummo04916c02006-03-10 22:30:01 +0000857source "drivers/w1/Kconfig"
858
Jean Delvaread2f9312005-07-02 18:15:49 +0200859source "drivers/hwmon/Kconfig"
860
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861#source "drivers/l3/Kconfig"
862
863source "drivers/misc/Kconfig"
864
Russell Kinga4e137a2005-08-18 10:06:59 +0100865source "drivers/mfd/Kconfig"
866
Richard Purdiec72a1d62006-03-31 02:31:04 -0800867source "drivers/leds/Kconfig"
868
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869source "drivers/media/Kconfig"
870
871source "drivers/video/Kconfig"
872
873source "sound/Kconfig"
874
875source "drivers/usb/Kconfig"
876
877source "drivers/mmc/Kconfig"
878
Alessandro Zummo12b824f2006-03-27 01:16:35 -0800879source "drivers/rtc/Kconfig"
880
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881endmenu
882
883source "fs/Kconfig"
884
885source "arch/arm/oprofile/Kconfig"
886
887source "arch/arm/Kconfig.debug"
888
889source "security/Kconfig"
890
891source "crypto/Kconfig"
892
893source "lib/Kconfig"