blob: 08b7cc900cae5cd87c817b4c54d345c866d9182c [file] [log] [blame]
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
96config ARCH_CLPS7500
97 bool "Cirrus-CL-PS7500FE"
98 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +010099 select ISA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000100 help
101 Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102
103config ARCH_CLPS711X
104 bool "CLPS711x/EP721x-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000105 help
106 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
108config ARCH_CO285
109 bool "Co-EBSA285"
110 select FOOTBRIDGE
111 select FOOTBRIDGE_ADDIN
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000112 help
113 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114
115config ARCH_EBSA110
116 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100117 select ISA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 help
119 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000120 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 Ethernet interface, two PCMCIA sockets, two serial ports and a
122 parallel port.
123
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000124config ARCH_EP93XX
125 bool "EP93xx-based"
126 select ARM_AMBA
127 select ARM_VIC
128 help
129 This enables support for the Cirrus EP93xx series of CPUs.
130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131config ARCH_FOOTBRIDGE
132 bool "FootBridge"
133 select FOOTBRIDGE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000134 help
135 Support for systems based on the DC21285 companion chip
136 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137
138config ARCH_INTEGRATOR
139 bool "Integrator"
140 select ARM_AMBA
141 select ICST525
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000142 help
143 Support for ARM's Integrator platform.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144
145config ARCH_IOP3XX
146 bool "IOP3xx-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 IOP3XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
151config ARCH_IXP4XX
152 bool "IXP4xx-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000153 help
154 Support for Intel's IXP4XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156config ARCH_IXP2000
157 bool "IXP2400/2800-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100158 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000159 help
160 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100162config ARCH_IXP23XX
163 bool "IXP23XX-based"
164 select PCI
165 help
166 Support for Intel's IXP23xx (XScale) family of processors.
167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168config ARCH_L7200
169 bool "LinkUp-L7200"
170 select FIQ
171 help
172 Say Y here if you intend to run this kernel on a LinkUp Systems
173 L7200 Software Development Board which uses an ARM720T processor.
174 Information on this board can be obtained at:
175
176 <http://www.linkupsys.com/>
177
178 If you have any questions or comments about the Linux kernel port
179 to this board, send e-mail to <sjhill@cotw.com>.
180
181config ARCH_PXA
182 bool "PXA2xx-based"
Al Viro034d2f52005-12-19 16:27:59 -0500183 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000184 help
185 Support for Intel's PXA2XX processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186
187config ARCH_RPC
188 bool "RiscPC"
189 select ARCH_ACORN
190 select FIQ
191 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100192 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000193 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 help
195 On the Acorn Risc-PC, Linux can support the internal IDE disk and
196 CD-ROM interface, serial and parallel port, and the floppy drive.
197
198config ARCH_SA1100
199 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100200 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100201 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500202 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000203 help
204 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
206config ARCH_S3C2410
207 bool "Samsung S3C2410"
208 help
209 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
210 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000211 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
213config ARCH_SHARK
214 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100215 select ISA
216 select ISA_DMA
217 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000218 help
219 Support for the StrongARM based Digital DNARD machine, also known
220 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
222config ARCH_LH7A40X
223 bool "Sharp LH7A40X"
224 help
225 Say Y here for systems based on one of the Sharp LH7A40X
226 System on a Chip processors. These CPUs include an ARM922T
227 core with a wide array of integrated devices for
228 hand-held and low-power applications.
229
230config ARCH_OMAP
231 bool "TI OMAP"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000232 help
233 Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234
235config ARCH_VERSATILE
236 bool "Versatile"
237 select ARM_AMBA
Russell Kingfa0fe482006-01-13 21:30:48 +0000238 select ARM_VIC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239 select ICST307
240 help
241 This enables support for ARM Ltd Versatile board.
242
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000243config ARCH_REALVIEW
244 bool "RealView"
245 select ARM_AMBA
246 select ICST307
247 help
248 This enables support for ARM Ltd RealView boards.
249
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250config ARCH_IMX
251 bool "IMX"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000252 help
253 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
255config ARCH_H720X
256 bool "Hynix-HMS720x-based"
Russell King065909b2006-01-04 15:44:16 +0000257 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258 help
259 This enables support for systems based on the Hynix HMS720x
260
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100261config ARCH_AAEC2000
262 bool "Agilent AAEC-2000 based"
Bellido Nicolas049eb322005-10-28 16:51:44 +0100263 select ARM_AMBA
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100264 help
265 This enables support for systems based on the Agilent AAEC-2000
266
SAN People73a59c12006-01-09 17:05:41 +0000267config ARCH_AT91RM9200
268 bool "AT91RM9200"
269 help
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000270 Say Y here if you intend to run this kernel on an Atmel
271 AT91RM9200-based board.
SAN People73a59c12006-01-09 17:05:41 +0000272
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273endchoice
274
275source "arch/arm/mach-clps711x/Kconfig"
276
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000277source "arch/arm/mach-ep93xx/Kconfig"
278
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279source "arch/arm/mach-footbridge/Kconfig"
280
281source "arch/arm/mach-integrator/Kconfig"
282
283source "arch/arm/mach-iop3xx/Kconfig"
284
285source "arch/arm/mach-ixp4xx/Kconfig"
286
287source "arch/arm/mach-ixp2000/Kconfig"
288
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100289source "arch/arm/mach-ixp23xx/Kconfig"
290
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291source "arch/arm/mach-pxa/Kconfig"
292
293source "arch/arm/mach-sa1100/Kconfig"
294
Tony Lindgrend48af152005-07-10 19:58:17 +0100295source "arch/arm/plat-omap/Kconfig"
296
297source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298
Tony Lindgren1dbae812005-11-10 14:26:51 +0000299source "arch/arm/mach-omap2/Kconfig"
300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301source "arch/arm/mach-s3c2410/Kconfig"
302
303source "arch/arm/mach-lh7a40x/Kconfig"
304
305source "arch/arm/mach-imx/Kconfig"
306
307source "arch/arm/mach-h720x/Kconfig"
308
309source "arch/arm/mach-versatile/Kconfig"
310
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100311source "arch/arm/mach-aaec2000/Kconfig"
312
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000313source "arch/arm/mach-realview/Kconfig"
314
SAN People73a59c12006-01-09 17:05:41 +0000315source "arch/arm/mach-at91rm9200/Kconfig"
316
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317# Definitions to make life easier
318config ARCH_ACORN
319 bool
320
321source arch/arm/mm/Kconfig
322
323# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
324config XSCALE_PMU
325 bool
326 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
327 default y
328
329endmenu
330
331source "arch/arm/common/Kconfig"
332
333config FORCE_MAX_ZONEORDER
334 int
335 depends on SA1111
336 default "9"
337
338menu "Bus support"
339
340config ARM_AMBA
341 bool
342
343config ISA
344 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 help
346 Find out whether you have ISA slots on your motherboard. ISA is the
347 name of a bus system, i.e. the way the CPU talks to the other stuff
348 inside your box. Other bus systems are PCI, EISA, MicroChannel
349 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
350 newer boards don't support it. If you have ISA, say Y, otherwise N.
351
Russell King065909b2006-01-04 15:44:16 +0000352# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353config ISA_DMA
354 bool
Russell King065909b2006-01-04 15:44:16 +0000355 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356
Russell King065909b2006-01-04 15:44:16 +0000357# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100358config ISA_DMA_API
359 bool
Al Viro5cae8412005-05-04 05:39:22 +0100360
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361config PCI
Catalin Marinasc0da0852005-06-20 18:51:06 +0100362 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363 help
364 Find out whether you have a PCI motherboard. PCI is the name of a
365 bus system, i.e. the way the CPU talks to the other stuff inside
366 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
367 VESA. If you have PCI, say Y, otherwise N.
368
369 The PCI-HOWTO, available from
370 <http://www.tldp.org/docs.html#howto>, contains valuable
371 information about which PCI hardware does work under Linux and which
372 doesn't.
373
374# Select the host bridge type
375config PCI_HOST_VIA82C505
376 bool
377 depends on PCI && ARCH_SHARK
378 default y
379
380source "drivers/pci/Kconfig"
381
382source "drivers/pcmcia/Kconfig"
383
384endmenu
385
386menu "Kernel Features"
387
388config SMP
389 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell Kingf6db4492005-11-07 21:30:21 +0000390 depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 help
392 This enables support for systems with more than one CPU. If you have
393 a system with only one CPU, like most personal computers, say N. If
394 you have a system with more than one CPU, say Y.
395
396 If you say N here, the kernel will run on single and multiprocessor
397 machines, but will use only one CPU of a multiprocessor machine. If
398 you say Y here, the kernel will run on many, but not all, single
399 processor machines. On a single processor machine, the kernel will
400 run faster if you say N here.
401
Arthur Othieno12c62c22005-09-10 00:26:22 -0700402 See also the <file:Documentation/smp.txt>,
403 <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
405 <http://www.linuxdoc.org/docs.html#howto>.
406
407 If you don't know what to do here, say N.
408
409config NR_CPUS
410 int "Maximum number of CPUs (2-32)"
411 range 2 32
412 depends on SMP
413 default "4"
414
Russell Kinga054a812005-11-02 22:24:33 +0000415config HOTPLUG_CPU
416 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
417 depends on SMP && HOTPLUG && EXPERIMENTAL
418 help
419 Say Y here to experiment with turning CPUs off and on. CPUs
420 can be controlled through /sys/devices/system/cpu.
421
Russell King37ee16a2005-11-08 19:08:05 +0000422config LOCAL_TIMERS
423 bool "Use local timer interrupts"
Russell King2a98beb2005-11-09 10:50:29 +0000424 depends on SMP && REALVIEW_MPCORE
Russell King37ee16a2005-11-08 19:08:05 +0000425 default y
426 help
427 Enable support for local timers on SMP platforms, rather then the
428 legacy IPI broadcast method. Local timers allows the system
429 accounting to be spread across the timer interval, preventing a
430 "thundering herd" at every timer tick.
431
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432config PREEMPT
433 bool "Preemptible Kernel (EXPERIMENTAL)"
434 depends on EXPERIMENTAL
435 help
436 This option reduces the latency of the kernel when reacting to
437 real-time or interactive events by allowing a low priority process to
438 be preempted even if it is in kernel mode executing a system call.
439 This allows applications to run more reliably even when the system is
440 under load.
441
442 Say Y here if you are building a kernel for a desktop, embedded
443 or real-time system. Say N if you are unsure.
444
Russell King8749af62005-06-25 19:39:45 +0100445config NO_IDLE_HZ
446 bool "Dynamic tick timer"
447 help
448 Select this option if you want to disable continuous timer ticks
449 and have them programmed to occur as required. This option saves
450 power as the system can remain in idle state for longer.
451
452 By default dynamic tick is disabled during the boot, and can be
453 manually enabled with:
454
455 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
456
457 Alternatively, if you want dynamic tick automatically enabled
458 during boot, pass "dyntick=enable" via the kernel command string.
459
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100460 Please note that dynamic tick may affect the accuracy of
461 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100462 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
463 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100464
Russell Kingf8065812006-03-02 22:41:59 +0000465config HZ
466 int
467 default 128 if ARCH_L7200
468 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000469 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
Russell Kingf8065812006-03-02 22:41:59 +0000470 default 100
471
Nicolas Pitre704bdda02006-01-14 16:33:50 +0000472config AEABI
473 bool "Use the ARM EABI to compile the kernel"
474 help
475 This option allows for the kernel to be compiled using the latest
476 ARM ABI (aka EABI). This is only useful if you are using a user
477 space environment that is also compiled with EABI.
478
479 Since there are major incompatibilities between the legacy ABI and
480 EABI, especially with regard to structure member alignment, this
481 option also changes the kernel syscall calling convention to
482 disambiguate both ABIs and allow for backward compatibility support
483 (selected with CONFIG_OABI_COMPAT).
484
485 To use this you need GCC version 4.0.0 or later.
486
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000487config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000488 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000489 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000490 default y
491 help
492 This option preserves the old syscall interface along with the
493 new (ARM EABI) one. It also provides a compatibility layer to
494 intercept syscalls that have structure arguments which layout
495 in memory differs between the legacy ABI and the new ARM EABI
496 (only for non "thumb" binaries). This option adds a tiny
497 overhead to all syscalls and produces a slightly larger kernel.
498 If you know you'll be using only pure EABI user space then you
499 can say N here. If this option is not selected and you attempt
500 to execute a legacy ABI binary then the result will be
501 UNPREDICTABLE (in fact it can be predicted that it won't work
502 at all). If in doubt say Y.
503
Dave Hansen3f22ab22005-06-23 00:07:43 -0700504config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700505 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100506 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507 help
508 Say Y to support efficient handling of discontiguous physical memory,
509 for architectures which are either NUMA (Non-Uniform Memory Access)
510 or have huge holes in the physical address space for other reasons.
511 See <file:Documentation/vm/numa> for more.
512
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700513config NODES_SHIFT
514 int
515 default "4" if ARCH_LH7A40X
516 default "2"
517 depends on NEED_MULTIPLE_NODES
518
Dave Hansen3f22ab22005-06-23 00:07:43 -0700519source "mm/Kconfig"
520
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521config LEDS
522 bool "Timer and CPU usage LEDs"
523 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
524 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
525 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
526 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000527 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
528 ARCH_AT91RM9200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 help
530 If you say Y here, the LEDs on your machine will be used
531 to provide useful information about your current system status.
532
533 If you are compiling a kernel for a NetWinder or EBSA-285, you will
534 be able to select which LEDs are active using the options below. If
535 you are compiling a kernel for the EBSA-110 or the LART however, the
536 red LED will simply flash regularly to indicate that the system is
537 still functional. It is safe to say Y here if you have a CATS
538 system, but the driver will do nothing.
539
540config LEDS_TIMER
541 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
542 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
543 depends on LEDS
544 default y if ARCH_EBSA110
545 help
546 If you say Y here, one of the system LEDs (the green one on the
547 NetWinder, the amber one on the EBSA285, or the red one on the LART)
548 will flash regularly to indicate that the system is still
549 operational. This is mainly useful to kernel hackers who are
550 debugging unstable kernels.
551
552 The LART uses the same LED for both Timer LED and CPU usage LED
553 functions. You may choose to use both, but the Timer LED function
554 will overrule the CPU usage LED.
555
556config LEDS_CPU
557 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
558 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
559 depends on LEDS
560 help
561 If you say Y here, the red LED will be used to give a good real
562 time indication of CPU usage, by lighting whenever the idle task
563 is not currently executing.
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 ALIGNMENT_TRAP
570 bool
571 default y if !ARCH_EBSA110
572 help
573 ARM processors can not fetch/store information which is not
574 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
575 address divisible by 4. On 32-bit ARM processors, these non-aligned
576 fetch/store instructions will be emulated in software if you say
577 here, which has a severe performance impact. This is necessary for
578 correct operation of some network protocols. With an IP-only
579 configuration it is safe to say N, otherwise say Y.
580
581endmenu
582
583menu "Boot options"
584
585# Compressed boot loader in ROM. Yes, we really want to ask about
586# TEXT and BSS so we preserve their values in the config files.
587config ZBOOT_ROM_TEXT
588 hex "Compressed ROM boot loader base address"
589 default "0"
590 help
591 The physical address at which the ROM-able zImage is to be
592 placed in the target. Platforms which normally make use of
593 ROM-able zImage formats normally set this to a suitable
594 value in their defconfig file.
595
596 If ZBOOT_ROM is not enabled, this has no effect.
597
598config ZBOOT_ROM_BSS
599 hex "Compressed ROM boot loader BSS address"
600 default "0"
601 help
602 The base address of 64KiB of read/write memory in the target
603 for the ROM-able zImage, which must be available while the
604 decompressor is running. Platforms which normally make use of
605 ROM-able zImage formats normally set this to a suitable
606 value in their defconfig file.
607
608 If ZBOOT_ROM is not enabled, this has no effect.
609
610config ZBOOT_ROM
611 bool "Compressed boot loader in ROM/flash"
612 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
613 help
614 Say Y here if you intend to execute your compressed kernel image
615 (zImage) directly from ROM or flash. If unsure, say N.
616
617config CMDLINE
618 string "Default kernel command string"
619 default ""
620 help
621 On some architectures (EBSA110 and CATS), there is currently no way
622 for the boot loader to pass arguments to the kernel. For these
623 architectures, you should supply some command-line options at build
624 time by entering them here. As a minimum, you should specify the
625 memory size and the root device (e.g., mem=64M root=/dev/nfs).
626
627config XIP_KERNEL
628 bool "Kernel Execute-In-Place from ROM"
629 depends on !ZBOOT_ROM
630 help
631 Execute-In-Place allows the kernel to run from non-volatile storage
632 directly addressable by the CPU, such as NOR flash. This saves RAM
633 space since the text section of the kernel is not loaded from flash
634 to RAM. Read-write sections, such as the data section and stack,
635 are still copied to RAM. The XIP kernel is not compressed since
636 it has to run directly from flash, so it will take more space to
637 store it. The flash address used to link the kernel object files,
638 and for storing it, is configuration dependent. Therefore, if you
639 say Y here, you must know the proper physical address where to
640 store the kernel image depending on your own flash memory usage.
641
642 Also note that the make target becomes "make xipImage" rather than
643 "make zImage" or "make Image". The final kernel binary to put in
644 ROM memory will be arch/arm/boot/xipImage.
645
646 If unsure, say N.
647
648config XIP_PHYS_ADDR
649 hex "XIP Kernel Physical Location"
650 depends on XIP_KERNEL
651 default "0x00080000"
652 help
653 This is the physical address in your flash memory the kernel will
654 be linked for and stored to. This address is dependent on your
655 own flash usage.
656
657endmenu
658
Tony Lindgrenec6bced2005-07-10 19:58:20 +0100659if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
661menu "CPU Frequency scaling"
662
663source "drivers/cpufreq/Kconfig"
664
665config CPU_FREQ_SA1100
666 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100667 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 -0700668 default y
669
670config CPU_FREQ_SA1110
671 bool
672 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
673 default y
674
675config CPU_FREQ_INTEGRATOR
676 tristate "CPUfreq driver for ARM Integrator CPUs"
677 depends on ARCH_INTEGRATOR && CPU_FREQ
678 default y
679 help
680 This enables the CPUfreq driver for ARM Integrator CPUs.
681
682 For details, take a look at <file:Documentation/cpu-freq>.
683
684 If in doubt, say Y.
685
686endmenu
687
688endif
689
690menu "Floating point emulation"
691
692comment "At least one emulation must be selected"
693
694config FPE_NWFPE
695 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000696 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 ---help---
698 Say Y to include the NWFPE floating point emulator in the kernel.
699 This is necessary to run most binaries. Linux does not currently
700 support floating point hardware so you need to say Y here even if
701 your machine has an FPA or floating point co-processor podule.
702
703 You may say N here if you are going to load the Acorn FPEmulator
704 early in the bootup.
705
706config FPE_NWFPE_XP
707 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +0000708 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 help
710 Say Y to include 80-bit support in the kernel floating-point
711 emulator. Otherwise, only 32 and 64-bit support is compiled in.
712 Note that gcc does not generate 80-bit operations by default,
713 so in most cases this option only enlarges the size of the
714 floating point emulator without any good reason.
715
716 You almost surely want to say N here.
717
718config FPE_FASTFPE
719 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000720 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700721 ---help---
722 Say Y here to include the FAST floating point emulator in the kernel.
723 This is an experimental much faster emulator which now also has full
724 precision for the mantissa. It does not support any exceptions.
725 It is very simple, and approximately 3-6 times faster than NWFPE.
726
727 It should be sufficient for most programs. It may be not suitable
728 for scientific calculations, but you have to check this for yourself.
729 If you do not feel you need a faster FP emulation you should better
730 choose NWFPE.
731
732config VFP
733 bool "VFP-format floating point maths"
734 depends on CPU_V6 || CPU_ARM926T
735 help
736 Say Y to include VFP support code in the kernel. This is needed
737 if your hardware includes a VFP unit.
738
739 Please see <file:Documentation/arm/VFP/release-notes.txt> for
740 release notes and additional status information.
741
742 Say N if your target does not have VFP hardware.
743
744endmenu
745
746menu "Userspace binary formats"
747
748source "fs/Kconfig.binfmt"
749
750config ARTHUR
751 tristate "RISC OS personality"
Nicolas Pitre704bdda02006-01-14 16:33:50 +0000752 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 help
754 Say Y here to include the kernel code necessary if you want to run
755 Acorn RISC OS/Arthur binaries under Linux. This code is still very
756 experimental; if this sounds frightening, say N and sleep in peace.
757 You can also say M here to compile this support as a module (which
758 will be called arthur).
759
760endmenu
761
762menu "Power management options"
763
Russell Kingeceab4a2005-11-15 11:31:41 +0000764source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766config APM
767 tristate "Advanced Power Management Emulation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 ---help---
769 APM is a BIOS specification for saving power using several different
770 techniques. This is mostly useful for battery powered laptops with
771 APM compliant BIOSes. If you say Y here, the system time will be
772 reset after a RESUME operation, the /proc/apm device will provide
773 battery status information, and user-space programs will receive
774 notification of APM "events" (e.g. battery status change).
775
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 In order to use APM, you will need supporting software. For location
777 and more information, read <file:Documentation/pm.txt> and the
778 Battery Powered Linux mini-HOWTO, available from
779 <http://www.tldp.org/docs.html#howto>.
780
781 This driver does not spin down disk drives (see the hdparm(8)
782 manpage ("man 8 hdparm") for that), and it doesn't turn off
783 VESA-compliant "green" monitors.
784
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 Generally, if you don't have a battery in your machine, there isn't
786 much point in using this driver and you should say N. If you get
787 random kernel OOPSes or reboots that don't seem to be related to
788 anything, try disabling/enabling this option (or disabling/enabling
789 APM in your BIOS).
790
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791endmenu
792
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700793source "net/Kconfig"
794
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795menu "Device Drivers"
796
797source "drivers/base/Kconfig"
798
Pavel Machekc35bf4a2005-11-12 20:25:25 +0000799source "drivers/connector/Kconfig"
800
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801if ALIGNMENT_TRAP
802source "drivers/mtd/Kconfig"
803endif
804
805source "drivers/parport/Kconfig"
806
807source "drivers/pnp/Kconfig"
808
809source "drivers/block/Kconfig"
810
811source "drivers/acorn/block/Kconfig"
812
David Brownellbb011b82005-06-12 23:26:05 +0100813if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
814 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100815 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
816 || ARCH_IXP23XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817source "drivers/ide/Kconfig"
818endif
819
820source "drivers/scsi/Kconfig"
821
822source "drivers/md/Kconfig"
823
824source "drivers/message/fusion/Kconfig"
825
826source "drivers/ieee1394/Kconfig"
827
828source "drivers/message/i2o/Kconfig"
829
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700830source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831
832source "drivers/isdn/Kconfig"
833
834# input before char - char/joystick depends on it. As does USB.
835
836source "drivers/input/Kconfig"
837
838source "drivers/char/Kconfig"
839
840source "drivers/i2c/Kconfig"
841
David Brownell8ae12a02006-01-08 13:34:19 -0800842source "drivers/spi/Kconfig"
843
Alessandro Zummo04916c02006-03-10 22:30:01 +0000844source "drivers/w1/Kconfig"
845
Jean Delvaread2f9312005-07-02 18:15:49 +0200846source "drivers/hwmon/Kconfig"
847
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848#source "drivers/l3/Kconfig"
849
850source "drivers/misc/Kconfig"
851
Russell Kinga4e137a2005-08-18 10:06:59 +0100852source "drivers/mfd/Kconfig"
853
Richard Purdiec72a1d62006-03-31 02:31:04 -0800854source "drivers/leds/Kconfig"
855
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856source "drivers/media/Kconfig"
857
858source "drivers/video/Kconfig"
859
860source "sound/Kconfig"
861
862source "drivers/usb/Kconfig"
863
864source "drivers/mmc/Kconfig"
865
Alessandro Zummo12b824f2006-03-27 01:16:35 -0800866source "drivers/rtc/Kconfig"
867
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868endmenu
869
870source "fs/Kconfig"
871
872source "arch/arm/oprofile/Kconfig"
873
874source "arch/arm/Kconfig.debug"
875
876source "security/Kconfig"
877
878source "crypto/Kconfig"
879
880source "lib/Kconfig"