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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
Thomas Gleixner4a2581a2006-07-01 22:30:09 +010050config GENERIC_HARDIRQS
51 bool
52 default y
53
54config HARDIRQS_SW_RESEND
55 bool
56 default y
57
58config GENERIC_IRQ_PROBE
59 bool
60 default y
61
Linus Torvalds1da177e2005-04-16 15:20:36 -070062config RWSEM_GENERIC_SPINLOCK
63 bool
64 default y
65
66config RWSEM_XCHGADD_ALGORITHM
67 bool
68
Akinobu Mitab89c3b12006-03-26 01:39:19 -080069config GENERIC_HWEIGHT
70 bool
71 default y
72
Linus Torvalds1da177e2005-04-16 15:20:36 -070073config GENERIC_CALIBRATE_DELAY
74 bool
75 default y
76
77config GENERIC_BUST_SPINLOCK
78 bool
79
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +010080config ARCH_MAY_HAVE_PC_FDC
81 bool
82
Linus Torvalds1da177e2005-04-16 15:20:36 -070083config GENERIC_ISA_DMA
84 bool
85
Linus Torvalds1da177e2005-04-16 15:20:36 -070086config FIQ
87 bool
88
Al Viro034d2f52005-12-19 16:27:59 -050089config ARCH_MTD_XIP
90 bool
91
Hyok S. Choic760fc12006-03-27 15:18:50 +010092config VECTORS_BASE
93 hex
94 default 0xffff0000 if MMU
95 default DRAM_BASE if REMAP_VECTORS_TO_RAM
96 default 0x00000000
97 help
98 The base address of exception vectors.
99
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100source "init/Kconfig"
101
102menu "System Type"
103
104choice
105 prompt "ARM system type"
Catalin Marinas6a0e2432006-03-07 14:42:27 +0000106 default ARCH_VERSATILE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700107
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100108config ARCH_AAEC2000
109 bool "Agilent AAEC-2000 based"
110 select ARM_AMBA
111 help
112 This enables support for systems based on the Agilent AAEC-2000
113
114config ARCH_INTEGRATOR
115 bool "ARM Ltd. Integrator family"
116 select ARM_AMBA
117 select ICST525
118 help
119 Support for ARM's Integrator platform.
120
121config ARCH_REALVIEW
122 bool "ARM Ltd. RealView family"
123 select ARM_AMBA
124 select ICST307
125 help
126 This enables support for ARM Ltd RealView boards.
127
128config ARCH_VERSATILE
129 bool "ARM Ltd. Versatile family"
130 select ARM_AMBA
131 select ARM_VIC
132 select ICST307
133 help
134 This enables support for ARM Ltd Versatile board.
135
136config ARCH_AT91RM9200
137 bool "Atmel AT91RM9200"
138 help
139 Say Y here if you intend to run this kernel on an Atmel
140 AT91RM9200-based board.
141
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142config ARCH_CLPS7500
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100143 bool "Cirrus CL-PS7500FE"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 select TIMER_ACORN
Russell Kingf7e68bb2005-05-05 14:49:01 +0100145 select ISA
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000146 help
147 Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148
149config ARCH_CLPS711X
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100150 bool "Cirrus Logic CLPS711x/EP721x-based"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000151 help
152 Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
154config ARCH_CO285
155 bool "Co-EBSA285"
156 select FOOTBRIDGE
157 select FOOTBRIDGE_ADDIN
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000158 help
159 Support for Intel's EBSA285 companion chip.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160
161config ARCH_EBSA110
162 bool "EBSA-110"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100163 select ISA
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 help
165 This is an evaluation board for the StrongARM processor available
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000166 from Digital. It has limited hardware on-board, including an
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167 Ethernet interface, two PCMCIA sockets, two serial ports and a
168 parallel port.
169
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000170config ARCH_EP93XX
171 bool "EP93xx-based"
172 select ARM_AMBA
173 select ARM_VIC
174 help
175 This enables support for the Cirrus EP93xx series of CPUs.
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177config ARCH_FOOTBRIDGE
178 bool "FootBridge"
179 select FOOTBRIDGE
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000180 help
181 Support for systems based on the DC21285 companion chip
182 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100184config ARCH_NETX
185 bool "Hilscher NetX based"
186 select ARM_VIC
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000187 help
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100188 This enables support for systems based on the Hilscher NetX Soc
189
190config ARCH_H720X
191 bool "Hynix HMS720x-based"
192 select ISA_DMA_API
193 help
194 This enables support for systems based on the Hynix HMS720x
195
196config ARCH_IMX
197 bool "IMX"
198 help
199 Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
201config ARCH_IOP3XX
202 bool "IOP3xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100203 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100204 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000205 help
206 Support for Intel's IOP3XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
208config ARCH_IXP4XX
209 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100210 depends on MMU
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000211 help
212 Support for Intel's IXP4XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213
214config ARCH_IXP2000
215 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100216 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100217 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000218 help
219 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100221config ARCH_IXP23XX
222 bool "IXP23XX-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100223 depends on MMU
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100224 select PCI
225 help
226 Support for Intel's IXP23xx (XScale) family of processors.
227
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228config ARCH_L7200
229 bool "LinkUp-L7200"
230 select FIQ
231 help
232 Say Y here if you intend to run this kernel on a LinkUp Systems
233 L7200 Software Development Board which uses an ARM720T processor.
234 Information on this board can be obtained at:
235
236 <http://www.linkupsys.com/>
237
238 If you have any questions or comments about the Linux kernel port
239 to this board, send e-mail to <sjhill@cotw.com>.
240
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100241config ARCH_PNX4008
242 bool "Philips Nexperia PNX4008 Mobile"
243 help
244 This enables support for Philips PNX4008 mobile platform.
245
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246config ARCH_PXA
247 bool "PXA2xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100248 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500249 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000250 help
251 Support for Intel's PXA2XX processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252
253config ARCH_RPC
254 bool "RiscPC"
255 select ARCH_ACORN
256 select FIQ
257 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100258 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000259 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700260 help
261 On the Acorn Risc-PC, Linux can support the internal IDE disk and
262 CD-ROM interface, serial and parallel port, and the floppy drive.
263
264config ARCH_SA1100
265 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100266 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100267 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500268 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000269 help
270 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271
272config ARCH_S3C2410
Ben Dookscd701aa2006-06-26 15:12:58 +0100273 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 help
275 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
276 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000277 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278
279config ARCH_SHARK
280 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100281 select ISA
282 select ISA_DMA
283 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000284 help
285 Support for the StrongARM based Digital DNARD machine, also known
286 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
288config ARCH_LH7A40X
289 bool "Sharp LH7A40X"
290 help
291 Say Y here for systems based on one of the Sharp LH7A40X
292 System on a Chip processors. These CPUs include an ARM922T
293 core with a wide array of integrated devices for
294 hand-held and low-power applications.
295
296config ARCH_OMAP
297 bool "TI OMAP"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000298 help
299 Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301endchoice
302
303source "arch/arm/mach-clps711x/Kconfig"
304
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000305source "arch/arm/mach-ep93xx/Kconfig"
306
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307source "arch/arm/mach-footbridge/Kconfig"
308
309source "arch/arm/mach-integrator/Kconfig"
310
311source "arch/arm/mach-iop3xx/Kconfig"
312
313source "arch/arm/mach-ixp4xx/Kconfig"
314
315source "arch/arm/mach-ixp2000/Kconfig"
316
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100317source "arch/arm/mach-ixp23xx/Kconfig"
318
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319source "arch/arm/mach-pxa/Kconfig"
320
321source "arch/arm/mach-sa1100/Kconfig"
322
Tony Lindgrend48af152005-07-10 19:58:17 +0100323source "arch/arm/plat-omap/Kconfig"
324
325source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326
Tony Lindgren1dbae812005-11-10 14:26:51 +0000327source "arch/arm/mach-omap2/Kconfig"
328
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329source "arch/arm/mach-s3c2410/Kconfig"
330
331source "arch/arm/mach-lh7a40x/Kconfig"
332
333source "arch/arm/mach-imx/Kconfig"
334
335source "arch/arm/mach-h720x/Kconfig"
336
337source "arch/arm/mach-versatile/Kconfig"
338
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100339source "arch/arm/mach-aaec2000/Kconfig"
340
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000341source "arch/arm/mach-realview/Kconfig"
342
SAN People73a59c12006-01-09 17:05:41 +0000343source "arch/arm/mach-at91rm9200/Kconfig"
344
Sascha Hauerbb6d8c82006-06-19 15:27:53 +0100345source "arch/arm/mach-netx/Kconfig"
346
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347# Definitions to make life easier
348config ARCH_ACORN
349 bool
350
351source arch/arm/mm/Kconfig
352
353# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
354config XSCALE_PMU
355 bool
356 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
357 default y
358
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100359if !MMU
360source "arch/arm/Kconfig-nommu"
361endif
362
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363endmenu
364
365source "arch/arm/common/Kconfig"
366
367config FORCE_MAX_ZONEORDER
368 int
369 depends on SA1111
370 default "9"
371
372menu "Bus support"
373
374config ARM_AMBA
375 bool
376
377config ISA
378 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 help
380 Find out whether you have ISA slots on your motherboard. ISA is the
381 name of a bus system, i.e. the way the CPU talks to the other stuff
382 inside your box. Other bus systems are PCI, EISA, MicroChannel
383 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
384 newer boards don't support it. If you have ISA, say Y, otherwise N.
385
Russell King065909b2006-01-04 15:44:16 +0000386# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387config ISA_DMA
388 bool
Russell King065909b2006-01-04 15:44:16 +0000389 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390
Russell King065909b2006-01-04 15:44:16 +0000391# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100392config ISA_DMA_API
393 bool
Al Viro5cae8412005-05-04 05:39:22 +0100394
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395config PCI
Milan Svoboda68939122006-06-25 22:12:12 +0100396 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 help
398 Find out whether you have a PCI motherboard. PCI is the name of a
399 bus system, i.e. the way the CPU talks to the other stuff inside
400 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
401 VESA. If you have PCI, say Y, otherwise N.
402
403 The PCI-HOWTO, available from
404 <http://www.tldp.org/docs.html#howto>, contains valuable
405 information about which PCI hardware does work under Linux and which
406 doesn't.
407
408# Select the host bridge type
409config PCI_HOST_VIA82C505
410 bool
411 depends on PCI && ARCH_SHARK
412 default y
413
414source "drivers/pci/Kconfig"
415
416source "drivers/pcmcia/Kconfig"
417
418endmenu
419
420menu "Kernel Features"
421
422config SMP
423 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell Kingf6db4492005-11-07 21:30:21 +0000424 depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 help
426 This enables support for systems with more than one CPU. If you have
427 a system with only one CPU, like most personal computers, say N. If
428 you have a system with more than one CPU, say Y.
429
430 If you say N here, the kernel will run on single and multiprocessor
431 machines, but will use only one CPU of a multiprocessor machine. If
432 you say Y here, the kernel will run on many, but not all, single
433 processor machines. On a single processor machine, the kernel will
434 run faster if you say N here.
435
Arthur Othieno12c62c22005-09-10 00:26:22 -0700436 See also the <file:Documentation/smp.txt>,
437 <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
439 <http://www.linuxdoc.org/docs.html#howto>.
440
441 If you don't know what to do here, say N.
442
443config NR_CPUS
444 int "Maximum number of CPUs (2-32)"
445 range 2 32
446 depends on SMP
447 default "4"
448
Russell Kinga054a812005-11-02 22:24:33 +0000449config HOTPLUG_CPU
450 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
451 depends on SMP && HOTPLUG && EXPERIMENTAL
452 help
453 Say Y here to experiment with turning CPUs off and on. CPUs
454 can be controlled through /sys/devices/system/cpu.
455
Russell King37ee16a2005-11-08 19:08:05 +0000456config LOCAL_TIMERS
457 bool "Use local timer interrupts"
Russell King2a98beb2005-11-09 10:50:29 +0000458 depends on SMP && REALVIEW_MPCORE
Russell King37ee16a2005-11-08 19:08:05 +0000459 default y
460 help
461 Enable support for local timers on SMP platforms, rather then the
462 legacy IPI broadcast method. Local timers allows the system
463 accounting to be spread across the timer interval, preventing a
464 "thundering herd" at every timer tick.
465
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466config PREEMPT
467 bool "Preemptible Kernel (EXPERIMENTAL)"
468 depends on EXPERIMENTAL
469 help
470 This option reduces the latency of the kernel when reacting to
471 real-time or interactive events by allowing a low priority process to
472 be preempted even if it is in kernel mode executing a system call.
473 This allows applications to run more reliably even when the system is
474 under load.
475
476 Say Y here if you are building a kernel for a desktop, embedded
477 or real-time system. Say N if you are unsure.
478
Russell King8749af62005-06-25 19:39:45 +0100479config NO_IDLE_HZ
480 bool "Dynamic tick timer"
481 help
482 Select this option if you want to disable continuous timer ticks
483 and have them programmed to occur as required. This option saves
484 power as the system can remain in idle state for longer.
485
486 By default dynamic tick is disabled during the boot, and can be
487 manually enabled with:
488
489 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
490
491 Alternatively, if you want dynamic tick automatically enabled
492 during boot, pass "dyntick=enable" via the kernel command string.
493
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100494 Please note that dynamic tick may affect the accuracy of
495 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100496 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
497 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100498
Russell Kingf8065812006-03-02 22:41:59 +0000499config HZ
500 int
501 default 128 if ARCH_L7200
502 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000503 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
Russell Kingf8065812006-03-02 22:41:59 +0000504 default 100
505
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000506config AEABI
507 bool "Use the ARM EABI to compile the kernel"
508 help
509 This option allows for the kernel to be compiled using the latest
510 ARM ABI (aka EABI). This is only useful if you are using a user
511 space environment that is also compiled with EABI.
512
513 Since there are major incompatibilities between the legacy ABI and
514 EABI, especially with regard to structure member alignment, this
515 option also changes the kernel syscall calling convention to
516 disambiguate both ABIs and allow for backward compatibility support
517 (selected with CONFIG_OABI_COMPAT).
518
519 To use this you need GCC version 4.0.0 or later.
520
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000521config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000522 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000523 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000524 default y
525 help
526 This option preserves the old syscall interface along with the
527 new (ARM EABI) one. It also provides a compatibility layer to
528 intercept syscalls that have structure arguments which layout
529 in memory differs between the legacy ABI and the new ARM EABI
530 (only for non "thumb" binaries). This option adds a tiny
531 overhead to all syscalls and produces a slightly larger kernel.
532 If you know you'll be using only pure EABI user space then you
533 can say N here. If this option is not selected and you attempt
534 to execute a legacy ABI binary then the result will be
535 UNPREDICTABLE (in fact it can be predicted that it won't work
536 at all). If in doubt say Y.
537
Dave Hansen3f22ab22005-06-23 00:07:43 -0700538config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100540 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 help
542 Say Y to support efficient handling of discontiguous physical memory,
543 for architectures which are either NUMA (Non-Uniform Memory Access)
544 or have huge holes in the physical address space for other reasons.
545 See <file:Documentation/vm/numa> for more.
546
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700547config NODES_SHIFT
548 int
549 default "4" if ARCH_LH7A40X
550 default "2"
551 depends on NEED_MULTIPLE_NODES
552
Dave Hansen3f22ab22005-06-23 00:07:43 -0700553source "mm/Kconfig"
554
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555config LEDS
556 bool "Timer and CPU usage LEDs"
557 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
558 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
559 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
560 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000561 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
562 ARCH_AT91RM9200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 help
564 If you say Y here, the LEDs on your machine will be used
565 to provide useful information about your current system status.
566
567 If you are compiling a kernel for a NetWinder or EBSA-285, you will
568 be able to select which LEDs are active using the options below. If
569 you are compiling a kernel for the EBSA-110 or the LART however, the
570 red LED will simply flash regularly to indicate that the system is
571 still functional. It is safe to say Y here if you have a CATS
572 system, but the driver will do nothing.
573
574config LEDS_TIMER
575 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
576 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
577 depends on LEDS
578 default y if ARCH_EBSA110
579 help
580 If you say Y here, one of the system LEDs (the green one on the
581 NetWinder, the amber one on the EBSA285, or the red one on the LART)
582 will flash regularly to indicate that the system is still
583 operational. This is mainly useful to kernel hackers who are
584 debugging unstable kernels.
585
586 The LART uses the same LED for both Timer LED and CPU usage LED
587 functions. You may choose to use both, but the Timer LED function
588 will overrule the CPU usage LED.
589
590config LEDS_CPU
591 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
592 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
593 depends on LEDS
594 help
595 If you say Y here, the red LED will be used to give a good real
596 time indication of CPU usage, by lighting whenever the idle task
597 is not currently executing.
598
599 The LART uses the same LED for both Timer LED and CPU usage LED
600 functions. You may choose to use both, but the Timer LED function
601 will overrule the CPU usage LED.
602
603config ALIGNMENT_TRAP
604 bool
605 default y if !ARCH_EBSA110
606 help
607 ARM processors can not fetch/store information which is not
608 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
609 address divisible by 4. On 32-bit ARM processors, these non-aligned
610 fetch/store instructions will be emulated in software if you say
611 here, which has a severe performance impact. This is necessary for
612 correct operation of some network protocols. With an IP-only
613 configuration it is safe to say N, otherwise say Y.
614
615endmenu
616
617menu "Boot options"
618
619# Compressed boot loader in ROM. Yes, we really want to ask about
620# TEXT and BSS so we preserve their values in the config files.
621config ZBOOT_ROM_TEXT
622 hex "Compressed ROM boot loader base address"
623 default "0"
624 help
625 The physical address at which the ROM-able zImage is to be
626 placed in the target. Platforms which normally make use of
627 ROM-able zImage formats normally set this to a suitable
628 value in their defconfig file.
629
630 If ZBOOT_ROM is not enabled, this has no effect.
631
632config ZBOOT_ROM_BSS
633 hex "Compressed ROM boot loader BSS address"
634 default "0"
635 help
636 The base address of 64KiB of read/write memory in the target
637 for the ROM-able zImage, which must be available while the
638 decompressor is running. Platforms which normally make use of
639 ROM-able zImage formats normally set this to a suitable
640 value in their defconfig file.
641
642 If ZBOOT_ROM is not enabled, this has no effect.
643
644config ZBOOT_ROM
645 bool "Compressed boot loader in ROM/flash"
646 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
647 help
648 Say Y here if you intend to execute your compressed kernel image
649 (zImage) directly from ROM or flash. If unsure, say N.
650
651config CMDLINE
652 string "Default kernel command string"
653 default ""
654 help
655 On some architectures (EBSA110 and CATS), there is currently no way
656 for the boot loader to pass arguments to the kernel. For these
657 architectures, you should supply some command-line options at build
658 time by entering them here. As a minimum, you should specify the
659 memory size and the root device (e.g., mem=64M root=/dev/nfs).
660
661config XIP_KERNEL
662 bool "Kernel Execute-In-Place from ROM"
663 depends on !ZBOOT_ROM
664 help
665 Execute-In-Place allows the kernel to run from non-volatile storage
666 directly addressable by the CPU, such as NOR flash. This saves RAM
667 space since the text section of the kernel is not loaded from flash
668 to RAM. Read-write sections, such as the data section and stack,
669 are still copied to RAM. The XIP kernel is not compressed since
670 it has to run directly from flash, so it will take more space to
671 store it. The flash address used to link the kernel object files,
672 and for storing it, is configuration dependent. Therefore, if you
673 say Y here, you must know the proper physical address where to
674 store the kernel image depending on your own flash memory usage.
675
676 Also note that the make target becomes "make xipImage" rather than
677 "make zImage" or "make Image". The final kernel binary to put in
678 ROM memory will be arch/arm/boot/xipImage.
679
680 If unsure, say N.
681
682config XIP_PHYS_ADDR
683 hex "XIP Kernel Physical Location"
684 depends on XIP_KERNEL
685 default "0x00080000"
686 help
687 This is the physical address in your flash memory the kernel will
688 be linked for and stored to. This address is dependent on your
689 own flash usage.
690
691endmenu
692
Tony Lindgrenec6bced2005-07-10 19:58:20 +0100693if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694
695menu "CPU Frequency scaling"
696
697source "drivers/cpufreq/Kconfig"
698
699config CPU_FREQ_SA1100
700 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100701 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 -0700702 default y
703
704config CPU_FREQ_SA1110
705 bool
706 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
707 default y
708
709config CPU_FREQ_INTEGRATOR
710 tristate "CPUfreq driver for ARM Integrator CPUs"
711 depends on ARCH_INTEGRATOR && CPU_FREQ
712 default y
713 help
714 This enables the CPUfreq driver for ARM Integrator CPUs.
715
716 For details, take a look at <file:Documentation/cpu-freq>.
717
718 If in doubt, say Y.
719
720endmenu
721
722endif
723
724menu "Floating point emulation"
725
726comment "At least one emulation must be selected"
727
728config FPE_NWFPE
729 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000730 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 ---help---
732 Say Y to include the NWFPE floating point emulator in the kernel.
733 This is necessary to run most binaries. Linux does not currently
734 support floating point hardware so you need to say Y here even if
735 your machine has an FPA or floating point co-processor podule.
736
737 You may say N here if you are going to load the Acorn FPEmulator
738 early in the bootup.
739
740config FPE_NWFPE_XP
741 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +0000742 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 help
744 Say Y to include 80-bit support in the kernel floating-point
745 emulator. Otherwise, only 32 and 64-bit support is compiled in.
746 Note that gcc does not generate 80-bit operations by default,
747 so in most cases this option only enlarges the size of the
748 floating point emulator without any good reason.
749
750 You almost surely want to say N here.
751
752config FPE_FASTFPE
753 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000754 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 ---help---
756 Say Y here to include the FAST floating point emulator in the kernel.
757 This is an experimental much faster emulator which now also has full
758 precision for the mantissa. It does not support any exceptions.
759 It is very simple, and approximately 3-6 times faster than NWFPE.
760
761 It should be sufficient for most programs. It may be not suitable
762 for scientific calculations, but you have to check this for yourself.
763 If you do not feel you need a faster FP emulation you should better
764 choose NWFPE.
765
766config VFP
767 bool "VFP-format floating point maths"
768 depends on CPU_V6 || CPU_ARM926T
769 help
770 Say Y to include VFP support code in the kernel. This is needed
771 if your hardware includes a VFP unit.
772
773 Please see <file:Documentation/arm/VFP/release-notes.txt> for
774 release notes and additional status information.
775
776 Say N if your target does not have VFP hardware.
777
778endmenu
779
780menu "Userspace binary formats"
781
782source "fs/Kconfig.binfmt"
783
784config ARTHUR
785 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000786 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 help
788 Say Y here to include the kernel code necessary if you want to run
789 Acorn RISC OS/Arthur binaries under Linux. This code is still very
790 experimental; if this sounds frightening, say N and sleep in peace.
791 You can also say M here to compile this support as a module (which
792 will be called arthur).
793
794endmenu
795
796menu "Power management options"
797
Russell Kingeceab4a2005-11-15 11:31:41 +0000798source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800config APM
801 tristate "Advanced Power Management Emulation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 ---help---
803 APM is a BIOS specification for saving power using several different
804 techniques. This is mostly useful for battery powered laptops with
805 APM compliant BIOSes. If you say Y here, the system time will be
806 reset after a RESUME operation, the /proc/apm device will provide
807 battery status information, and user-space programs will receive
808 notification of APM "events" (e.g. battery status change).
809
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810 In order to use APM, you will need supporting software. For location
811 and more information, read <file:Documentation/pm.txt> and the
812 Battery Powered Linux mini-HOWTO, available from
813 <http://www.tldp.org/docs.html#howto>.
814
815 This driver does not spin down disk drives (see the hdparm(8)
816 manpage ("man 8 hdparm") for that), and it doesn't turn off
817 VESA-compliant "green" monitors.
818
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819 Generally, if you don't have a battery in your machine, there isn't
820 much point in using this driver and you should say N. If you get
821 random kernel OOPSes or reboots that don't seem to be related to
822 anything, try disabling/enabling this option (or disabling/enabling
823 APM in your BIOS).
824
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825endmenu
826
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700827source "net/Kconfig"
828
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829menu "Device Drivers"
830
831source "drivers/base/Kconfig"
832
Pavel Machekc35bf4a2005-11-12 20:25:25 +0000833source "drivers/connector/Kconfig"
834
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835if ALIGNMENT_TRAP
836source "drivers/mtd/Kconfig"
837endif
838
839source "drivers/parport/Kconfig"
840
841source "drivers/pnp/Kconfig"
842
843source "drivers/block/Kconfig"
844
845source "drivers/acorn/block/Kconfig"
846
David Brownellbb011b82005-06-12 23:26:05 +0100847if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
848 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100849 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
850 || ARCH_IXP23XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851source "drivers/ide/Kconfig"
852endif
853
854source "drivers/scsi/Kconfig"
855
856source "drivers/md/Kconfig"
857
858source "drivers/message/fusion/Kconfig"
859
860source "drivers/ieee1394/Kconfig"
861
862source "drivers/message/i2o/Kconfig"
863
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700864source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865
866source "drivers/isdn/Kconfig"
867
868# input before char - char/joystick depends on it. As does USB.
869
870source "drivers/input/Kconfig"
871
872source "drivers/char/Kconfig"
873
874source "drivers/i2c/Kconfig"
875
David Brownell8ae12a02006-01-08 13:34:19 -0800876source "drivers/spi/Kconfig"
877
Alessandro Zummo04916c02006-03-10 22:30:01 +0000878source "drivers/w1/Kconfig"
879
Jean Delvaread2f9312005-07-02 18:15:49 +0200880source "drivers/hwmon/Kconfig"
881
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882#source "drivers/l3/Kconfig"
883
884source "drivers/misc/Kconfig"
885
Russell Kinga4e137a2005-08-18 10:06:59 +0100886source "drivers/mfd/Kconfig"
887
Richard Purdiec72a1d62006-03-31 02:31:04 -0800888source "drivers/leds/Kconfig"
889
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890source "drivers/media/Kconfig"
891
892source "drivers/video/Kconfig"
893
894source "sound/Kconfig"
895
896source "drivers/usb/Kconfig"
897
898source "drivers/mmc/Kconfig"
899
Alessandro Zummo12b824f2006-03-27 01:16:35 -0800900source "drivers/rtc/Kconfig"
901
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902endmenu
903
904source "fs/Kconfig"
905
906source "arch/arm/oprofile/Kconfig"
907
908source "arch/arm/Kconfig.debug"
909
910source "security/Kconfig"
911
912source "crypto/Kconfig"
913
914source "lib/Kconfig"