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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
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100124config ARCH_AT91
125 bool "Atmel AT91"
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100126 help
Andrew Victor8fc5ffa2006-06-29 16:06:33 +0100127 This enables support for systems based on the Atmel AT91RM9200
128 and AT91SAM9xxx processors.
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100129
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 Kinga4f7e762006-06-28 12:52:41 +0100191 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100192 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000193 help
194 Support for Intel's IOP3XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196config ARCH_IXP4XX
197 bool "IXP4xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100198 depends on MMU
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000199 help
200 Support for Intel's IXP4XX (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
202config ARCH_IXP2000
203 bool "IXP2400/2800-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100204 depends on MMU
Russell Kingf7e68bb2005-05-05 14:49:01 +0100205 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000206 help
207 Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100209config ARCH_IXP23XX
210 bool "IXP23XX-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100211 depends on MMU
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100212 select PCI
213 help
214 Support for Intel's IXP23xx (XScale) family of processors.
215
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216config ARCH_L7200
217 bool "LinkUp-L7200"
218 select FIQ
219 help
220 Say Y here if you intend to run this kernel on a LinkUp Systems
221 L7200 Software Development Board which uses an ARM720T processor.
222 Information on this board can be obtained at:
223
224 <http://www.linkupsys.com/>
225
226 If you have any questions or comments about the Linux kernel port
227 to this board, send e-mail to <sjhill@cotw.com>.
228
Deepak Saxena4af6fee2006-06-20 21:30:44 +0100229config ARCH_PNX4008
230 bool "Philips Nexperia PNX4008 Mobile"
231 help
232 This enables support for Philips PNX4008 mobile platform.
233
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234config ARCH_PXA
235 bool "PXA2xx-based"
Russell Kinga4f7e762006-06-28 12:52:41 +0100236 depends on MMU
Al Viro034d2f52005-12-19 16:27:59 -0500237 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000238 help
239 Support for Intel's PXA2XX processor line.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
241config ARCH_RPC
242 bool "RiscPC"
243 select ARCH_ACORN
244 select FIQ
245 select TIMER_ACORN
viro@ZenIV.linux.org.uka08b6b72005-09-06 01:48:42 +0100246 select ARCH_MAY_HAVE_PC_FDC
Russell King065909b2006-01-04 15:44:16 +0000247 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 help
249 On the Acorn Risc-PC, Linux can support the internal IDE disk and
250 CD-ROM interface, serial and parallel port, and the floppy drive.
251
252config ARCH_SA1100
253 bool "SA1100-based"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100254 select ISA
Russell King3cd9e192005-06-25 19:29:34 +0100255 select ARCH_DISCONTIGMEM_ENABLE
Al Viro034d2f52005-12-19 16:27:59 -0500256 select ARCH_MTD_XIP
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000257 help
258 Support for StrongARM 11x0 based boards.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
260config ARCH_S3C2410
Ben Dookscd701aa2006-06-26 15:12:58 +0100261 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262 help
263 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
264 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
Martin Michlmayrf6c89652006-02-08 21:09:07 +0000265 the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266
267config ARCH_SHARK
268 bool "Shark"
Russell Kingf7e68bb2005-05-05 14:49:01 +0100269 select ISA
270 select ISA_DMA
271 select PCI
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000272 help
273 Support for the StrongARM based Digital DNARD machine, also known
274 as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275
276config ARCH_LH7A40X
277 bool "Sharp LH7A40X"
278 help
279 Say Y here for systems based on one of the Sharp LH7A40X
280 System on a Chip processors. These CPUs include an ARM922T
281 core with a wide array of integrated devices for
282 hand-held and low-power applications.
283
284config ARCH_OMAP
285 bool "TI OMAP"
Martin Michlmayrf999b8b2006-02-08 21:09:05 +0000286 help
287 Support for TI's OMAP platform (OMAP1 and OMAP2).
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289endchoice
290
291source "arch/arm/mach-clps711x/Kconfig"
292
Lennert Buytenheke7736d42006-03-20 17:10:13 +0000293source "arch/arm/mach-ep93xx/Kconfig"
294
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295source "arch/arm/mach-footbridge/Kconfig"
296
297source "arch/arm/mach-integrator/Kconfig"
298
299source "arch/arm/mach-iop3xx/Kconfig"
300
301source "arch/arm/mach-ixp4xx/Kconfig"
302
303source "arch/arm/mach-ixp2000/Kconfig"
304
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100305source "arch/arm/mach-ixp23xx/Kconfig"
306
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307source "arch/arm/mach-pxa/Kconfig"
308
309source "arch/arm/mach-sa1100/Kconfig"
310
Tony Lindgrend48af152005-07-10 19:58:17 +0100311source "arch/arm/plat-omap/Kconfig"
312
313source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314
Tony Lindgren1dbae812005-11-10 14:26:51 +0000315source "arch/arm/mach-omap2/Kconfig"
316
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317source "arch/arm/mach-s3c2410/Kconfig"
318
319source "arch/arm/mach-lh7a40x/Kconfig"
320
321source "arch/arm/mach-imx/Kconfig"
322
323source "arch/arm/mach-h720x/Kconfig"
324
325source "arch/arm/mach-versatile/Kconfig"
326
Bellido Nicolas038c5b62005-06-20 18:51:05 +0100327source "arch/arm/mach-aaec2000/Kconfig"
328
Catalin Marinas8ad68bb2005-10-31 14:25:02 +0000329source "arch/arm/mach-realview/Kconfig"
330
SAN People73a59c12006-01-09 17:05:41 +0000331source "arch/arm/mach-at91rm9200/Kconfig"
332
Sascha Hauerbb6d8c82006-06-19 15:27:53 +0100333source "arch/arm/mach-netx/Kconfig"
334
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335# Definitions to make life easier
336config ARCH_ACORN
337 bool
338
339source arch/arm/mm/Kconfig
340
341# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
342config XSCALE_PMU
343 bool
344 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
345 default y
346
Hyok S. Choi3b93e7b2006-06-22 11:48:56 +0100347if !MMU
348source "arch/arm/Kconfig-nommu"
349endif
350
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351endmenu
352
353source "arch/arm/common/Kconfig"
354
355config FORCE_MAX_ZONEORDER
356 int
357 depends on SA1111
358 default "9"
359
360menu "Bus support"
361
362config ARM_AMBA
363 bool
364
365config ISA
366 bool
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 help
368 Find out whether you have ISA slots on your motherboard. ISA is the
369 name of a bus system, i.e. the way the CPU talks to the other stuff
370 inside your box. Other bus systems are PCI, EISA, MicroChannel
371 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
372 newer boards don't support it. If you have ISA, say Y, otherwise N.
373
Russell King065909b2006-01-04 15:44:16 +0000374# Select ISA DMA controller support
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375config ISA_DMA
376 bool
Russell King065909b2006-01-04 15:44:16 +0000377 select ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700378
Russell King065909b2006-01-04 15:44:16 +0000379# Select ISA DMA interface
Al Viro5cae8412005-05-04 05:39:22 +0100380config ISA_DMA_API
381 bool
Al Viro5cae8412005-05-04 05:39:22 +0100382
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383config PCI
Milan Svoboda68939122006-06-25 22:12:12 +0100384 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 help
386 Find out whether you have a PCI motherboard. PCI is the name of a
387 bus system, i.e. the way the CPU talks to the other stuff inside
388 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
389 VESA. If you have PCI, say Y, otherwise N.
390
391 The PCI-HOWTO, available from
392 <http://www.tldp.org/docs.html#howto>, contains valuable
393 information about which PCI hardware does work under Linux and which
394 doesn't.
395
396# Select the host bridge type
397config PCI_HOST_VIA82C505
398 bool
399 depends on PCI && ARCH_SHARK
400 default y
401
402source "drivers/pci/Kconfig"
403
404source "drivers/pcmcia/Kconfig"
405
406endmenu
407
408menu "Kernel Features"
409
410config SMP
411 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
Russell Kingf6db4492005-11-07 21:30:21 +0000412 depends on EXPERIMENTAL && REALVIEW_MPCORE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 help
414 This enables support for systems with more than one CPU. If you have
415 a system with only one CPU, like most personal computers, say N. If
416 you have a system with more than one CPU, say Y.
417
418 If you say N here, the kernel will run on single and multiprocessor
419 machines, but will use only one CPU of a multiprocessor machine. If
420 you say Y here, the kernel will run on many, but not all, single
421 processor machines. On a single processor machine, the kernel will
422 run faster if you say N here.
423
Arthur Othieno12c62c22005-09-10 00:26:22 -0700424 See also the <file:Documentation/smp.txt>,
425 <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700426 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
427 <http://www.linuxdoc.org/docs.html#howto>.
428
429 If you don't know what to do here, say N.
430
431config NR_CPUS
432 int "Maximum number of CPUs (2-32)"
433 range 2 32
434 depends on SMP
435 default "4"
436
Russell Kinga054a812005-11-02 22:24:33 +0000437config HOTPLUG_CPU
438 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
439 depends on SMP && HOTPLUG && EXPERIMENTAL
440 help
441 Say Y here to experiment with turning CPUs off and on. CPUs
442 can be controlled through /sys/devices/system/cpu.
443
Russell King37ee16a2005-11-08 19:08:05 +0000444config LOCAL_TIMERS
445 bool "Use local timer interrupts"
Russell King2a98beb2005-11-09 10:50:29 +0000446 depends on SMP && REALVIEW_MPCORE
Russell King37ee16a2005-11-08 19:08:05 +0000447 default y
448 help
449 Enable support for local timers on SMP platforms, rather then the
450 legacy IPI broadcast method. Local timers allows the system
451 accounting to be spread across the timer interval, preventing a
452 "thundering herd" at every timer tick.
453
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454config PREEMPT
455 bool "Preemptible Kernel (EXPERIMENTAL)"
456 depends on EXPERIMENTAL
457 help
458 This option reduces the latency of the kernel when reacting to
459 real-time or interactive events by allowing a low priority process to
460 be preempted even if it is in kernel mode executing a system call.
461 This allows applications to run more reliably even when the system is
462 under load.
463
464 Say Y here if you are building a kernel for a desktop, embedded
465 or real-time system. Say N if you are unsure.
466
Russell King8749af62005-06-25 19:39:45 +0100467config NO_IDLE_HZ
468 bool "Dynamic tick timer"
469 help
470 Select this option if you want to disable continuous timer ticks
471 and have them programmed to occur as required. This option saves
472 power as the system can remain in idle state for longer.
473
474 By default dynamic tick is disabled during the boot, and can be
475 manually enabled with:
476
477 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
478
479 Alternatively, if you want dynamic tick automatically enabled
480 during boot, pass "dyntick=enable" via the kernel command string.
481
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100482 Please note that dynamic tick may affect the accuracy of
483 timekeeping on some platforms depending on the implementation.
Nicolas Pitre569d2c32005-09-01 12:48:48 +0100484 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
485 to have accurate timekeeping with dynamic tick.
Tony Lindgrenf2be64b2005-06-28 21:01:16 +0100486
Russell Kingf8065812006-03-02 22:41:59 +0000487config HZ
488 int
489 default 128 if ARCH_L7200
490 default 200 if ARCH_EBSA110 || ARCH_S3C2410
Russell Kingbfe65702006-03-04 11:01:53 +0000491 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
Russell Kingf8065812006-03-02 22:41:59 +0000492 default 100
493
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000494config AEABI
495 bool "Use the ARM EABI to compile the kernel"
496 help
497 This option allows for the kernel to be compiled using the latest
498 ARM ABI (aka EABI). This is only useful if you are using a user
499 space environment that is also compiled with EABI.
500
501 Since there are major incompatibilities between the legacy ABI and
502 EABI, especially with regard to structure member alignment, this
503 option also changes the kernel syscall calling convention to
504 disambiguate both ABIs and allow for backward compatibility support
505 (selected with CONFIG_OABI_COMPAT).
506
507 To use this you need GCC version 4.0.0 or later.
508
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000509config OABI_COMPAT
Russell Kinga73a3ff2006-02-08 21:09:55 +0000510 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
Nicolas Pitre61c484d2006-02-08 21:09:08 +0000511 depends on AEABI && EXPERIMENTAL
Nicolas Pitre6c90c872006-01-14 16:37:15 +0000512 default y
513 help
514 This option preserves the old syscall interface along with the
515 new (ARM EABI) one. It also provides a compatibility layer to
516 intercept syscalls that have structure arguments which layout
517 in memory differs between the legacy ABI and the new ARM EABI
518 (only for non "thumb" binaries). This option adds a tiny
519 overhead to all syscalls and produces a slightly larger kernel.
520 If you know you'll be using only pure EABI user space then you
521 can say N here. If this option is not selected and you attempt
522 to execute a legacy ABI binary then the result will be
523 UNPREDICTABLE (in fact it can be predicted that it won't work
524 at all). If in doubt say Y.
525
Dave Hansen3f22ab22005-06-23 00:07:43 -0700526config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 bool
Russell Kingf7e68bb2005-05-05 14:49:01 +0100528 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 help
530 Say Y to support efficient handling of discontiguous physical memory,
531 for architectures which are either NUMA (Non-Uniform Memory Access)
532 or have huge holes in the physical address space for other reasons.
533 See <file:Documentation/vm/numa> for more.
534
Yasunori Gotoc80d79d2006-04-10 22:53:53 -0700535config NODES_SHIFT
536 int
537 default "4" if ARCH_LH7A40X
538 default "2"
539 depends on NEED_MULTIPLE_NODES
540
Dave Hansen3f22ab22005-06-23 00:07:43 -0700541source "mm/Kconfig"
542
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543config LEDS
544 bool "Timer and CPU usage LEDs"
545 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
546 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
547 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
548 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
SAN People73a59c12006-01-09 17:05:41 +0000549 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
550 ARCH_AT91RM9200
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 help
552 If you say Y here, the LEDs on your machine will be used
553 to provide useful information about your current system status.
554
555 If you are compiling a kernel for a NetWinder or EBSA-285, you will
556 be able to select which LEDs are active using the options below. If
557 you are compiling a kernel for the EBSA-110 or the LART however, the
558 red LED will simply flash regularly to indicate that the system is
559 still functional. It is safe to say Y here if you have a CATS
560 system, but the driver will do nothing.
561
562config LEDS_TIMER
563 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
564 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
565 depends on LEDS
566 default y if ARCH_EBSA110
567 help
568 If you say Y here, one of the system LEDs (the green one on the
569 NetWinder, the amber one on the EBSA285, or the red one on the LART)
570 will flash regularly to indicate that the system is still
571 operational. This is mainly useful to kernel hackers who are
572 debugging unstable kernels.
573
574 The LART uses the same LED for both Timer LED and CPU usage LED
575 functions. You may choose to use both, but the Timer LED function
576 will overrule the CPU usage LED.
577
578config LEDS_CPU
579 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
580 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
581 depends on LEDS
582 help
583 If you say Y here, the red LED will be used to give a good real
584 time indication of CPU usage, by lighting whenever the idle task
585 is not currently executing.
586
587 The LART uses the same LED for both Timer LED and CPU usage LED
588 functions. You may choose to use both, but the Timer LED function
589 will overrule the CPU usage LED.
590
591config ALIGNMENT_TRAP
592 bool
593 default y if !ARCH_EBSA110
594 help
595 ARM processors can not fetch/store information which is not
596 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
597 address divisible by 4. On 32-bit ARM processors, these non-aligned
598 fetch/store instructions will be emulated in software if you say
599 here, which has a severe performance impact. This is necessary for
600 correct operation of some network protocols. With an IP-only
601 configuration it is safe to say N, otherwise say Y.
602
603endmenu
604
605menu "Boot options"
606
607# Compressed boot loader in ROM. Yes, we really want to ask about
608# TEXT and BSS so we preserve their values in the config files.
609config ZBOOT_ROM_TEXT
610 hex "Compressed ROM boot loader base address"
611 default "0"
612 help
613 The physical address at which the ROM-able zImage is to be
614 placed in the target. Platforms which normally make use of
615 ROM-able zImage formats normally set this to a suitable
616 value in their defconfig file.
617
618 If ZBOOT_ROM is not enabled, this has no effect.
619
620config ZBOOT_ROM_BSS
621 hex "Compressed ROM boot loader BSS address"
622 default "0"
623 help
624 The base address of 64KiB of read/write memory in the target
625 for the ROM-able zImage, which must be available while the
626 decompressor is running. 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
633 bool "Compressed boot loader in ROM/flash"
634 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
635 help
636 Say Y here if you intend to execute your compressed kernel image
637 (zImage) directly from ROM or flash. If unsure, say N.
638
639config CMDLINE
640 string "Default kernel command string"
641 default ""
642 help
643 On some architectures (EBSA110 and CATS), there is currently no way
644 for the boot loader to pass arguments to the kernel. For these
645 architectures, you should supply some command-line options at build
646 time by entering them here. As a minimum, you should specify the
647 memory size and the root device (e.g., mem=64M root=/dev/nfs).
648
649config XIP_KERNEL
650 bool "Kernel Execute-In-Place from ROM"
651 depends on !ZBOOT_ROM
652 help
653 Execute-In-Place allows the kernel to run from non-volatile storage
654 directly addressable by the CPU, such as NOR flash. This saves RAM
655 space since the text section of the kernel is not loaded from flash
656 to RAM. Read-write sections, such as the data section and stack,
657 are still copied to RAM. The XIP kernel is not compressed since
658 it has to run directly from flash, so it will take more space to
659 store it. The flash address used to link the kernel object files,
660 and for storing it, is configuration dependent. Therefore, if you
661 say Y here, you must know the proper physical address where to
662 store the kernel image depending on your own flash memory usage.
663
664 Also note that the make target becomes "make xipImage" rather than
665 "make zImage" or "make Image". The final kernel binary to put in
666 ROM memory will be arch/arm/boot/xipImage.
667
668 If unsure, say N.
669
670config XIP_PHYS_ADDR
671 hex "XIP Kernel Physical Location"
672 depends on XIP_KERNEL
673 default "0x00080000"
674 help
675 This is the physical address in your flash memory the kernel will
676 be linked for and stored to. This address is dependent on your
677 own flash usage.
678
679endmenu
680
Tony Lindgrenec6bced2005-07-10 19:58:20 +0100681if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682
683menu "CPU Frequency scaling"
684
685source "drivers/cpufreq/Kconfig"
686
687config CPU_FREQ_SA1100
688 bool
Vincent Sanders07c6d482005-06-09 21:59:22 +0100689 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 -0700690 default y
691
692config CPU_FREQ_SA1110
693 bool
694 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
695 default y
696
697config CPU_FREQ_INTEGRATOR
698 tristate "CPUfreq driver for ARM Integrator CPUs"
699 depends on ARCH_INTEGRATOR && CPU_FREQ
700 default y
701 help
702 This enables the CPUfreq driver for ARM Integrator CPUs.
703
704 For details, take a look at <file:Documentation/cpu-freq>.
705
706 If in doubt, say Y.
707
708endmenu
709
710endif
711
712menu "Floating point emulation"
713
714comment "At least one emulation must be selected"
715
716config FPE_NWFPE
717 bool "NWFPE math emulation"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000718 depends on !AEABI || OABI_COMPAT
Linus Torvalds1da177e2005-04-16 15:20:36 -0700719 ---help---
720 Say Y to include the NWFPE floating point emulator in the kernel.
721 This is necessary to run most binaries. Linux does not currently
722 support floating point hardware so you need to say Y here even if
723 your machine has an FPA or floating point co-processor podule.
724
725 You may say N here if you are going to load the Acorn FPEmulator
726 early in the bootup.
727
728config FPE_NWFPE_XP
729 bool "Support extended precision"
Lennert Buytenhekbedf1422005-11-07 21:12:08 +0000730 depends on FPE_NWFPE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 help
732 Say Y to include 80-bit support in the kernel floating-point
733 emulator. Otherwise, only 32 and 64-bit support is compiled in.
734 Note that gcc does not generate 80-bit operations by default,
735 so in most cases this option only enlarges the size of the
736 floating point emulator without any good reason.
737
738 You almost surely want to say N here.
739
740config FPE_FASTFPE
741 bool "FastFPE math emulation (EXPERIMENTAL)"
Nicolas Pitre8993a442006-01-14 16:36:50 +0000742 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 ---help---
744 Say Y here to include the FAST floating point emulator in the kernel.
745 This is an experimental much faster emulator which now also has full
746 precision for the mantissa. It does not support any exceptions.
747 It is very simple, and approximately 3-6 times faster than NWFPE.
748
749 It should be sufficient for most programs. It may be not suitable
750 for scientific calculations, but you have to check this for yourself.
751 If you do not feel you need a faster FP emulation you should better
752 choose NWFPE.
753
754config VFP
755 bool "VFP-format floating point maths"
756 depends on CPU_V6 || CPU_ARM926T
757 help
758 Say Y to include VFP support code in the kernel. This is needed
759 if your hardware includes a VFP unit.
760
761 Please see <file:Documentation/arm/VFP/release-notes.txt> for
762 release notes and additional status information.
763
764 Say N if your target does not have VFP hardware.
765
766endmenu
767
768menu "Userspace binary formats"
769
770source "fs/Kconfig.binfmt"
771
772config ARTHUR
773 tristate "RISC OS personality"
Nicolas Pitre704bdda2006-01-14 16:33:50 +0000774 depends on !AEABI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775 help
776 Say Y here to include the kernel code necessary if you want to run
777 Acorn RISC OS/Arthur binaries under Linux. This code is still very
778 experimental; if this sounds frightening, say N and sleep in peace.
779 You can also say M here to compile this support as a module (which
780 will be called arthur).
781
782endmenu
783
784menu "Power management options"
785
Russell Kingeceab4a2005-11-15 11:31:41 +0000786source "kernel/power/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788config APM
789 tristate "Advanced Power Management Emulation"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790 ---help---
791 APM is a BIOS specification for saving power using several different
792 techniques. This is mostly useful for battery powered laptops with
793 APM compliant BIOSes. If you say Y here, the system time will be
794 reset after a RESUME operation, the /proc/apm device will provide
795 battery status information, and user-space programs will receive
796 notification of APM "events" (e.g. battery status change).
797
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 In order to use APM, you will need supporting software. For location
799 and more information, read <file:Documentation/pm.txt> and the
800 Battery Powered Linux mini-HOWTO, available from
801 <http://www.tldp.org/docs.html#howto>.
802
803 This driver does not spin down disk drives (see the hdparm(8)
804 manpage ("man 8 hdparm") for that), and it doesn't turn off
805 VESA-compliant "green" monitors.
806
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 Generally, if you don't have a battery in your machine, there isn't
808 much point in using this driver and you should say N. If you get
809 random kernel OOPSes or reboots that don't seem to be related to
810 anything, try disabling/enabling this option (or disabling/enabling
811 APM in your BIOS).
812
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813endmenu
814
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700815source "net/Kconfig"
816
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817menu "Device Drivers"
818
819source "drivers/base/Kconfig"
820
Pavel Machekc35bf4a2005-11-12 20:25:25 +0000821source "drivers/connector/Kconfig"
822
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823if ALIGNMENT_TRAP
824source "drivers/mtd/Kconfig"
825endif
826
827source "drivers/parport/Kconfig"
828
829source "drivers/pnp/Kconfig"
830
831source "drivers/block/Kconfig"
832
833source "drivers/acorn/block/Kconfig"
834
David Brownellbb011b82005-06-12 23:26:05 +0100835if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
836 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100837 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
838 || ARCH_IXP23XX
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839source "drivers/ide/Kconfig"
840endif
841
842source "drivers/scsi/Kconfig"
843
844source "drivers/md/Kconfig"
845
846source "drivers/message/fusion/Kconfig"
847
848source "drivers/ieee1394/Kconfig"
849
850source "drivers/message/i2o/Kconfig"
851
Sam Ravnborgd5950b42005-07-11 21:03:49 -0700852source "drivers/net/Kconfig"
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853
854source "drivers/isdn/Kconfig"
855
856# input before char - char/joystick depends on it. As does USB.
857
858source "drivers/input/Kconfig"
859
860source "drivers/char/Kconfig"
861
862source "drivers/i2c/Kconfig"
863
David Brownell8ae12a02006-01-08 13:34:19 -0800864source "drivers/spi/Kconfig"
865
Alessandro Zummo04916c02006-03-10 22:30:01 +0000866source "drivers/w1/Kconfig"
867
Jean Delvaread2f9312005-07-02 18:15:49 +0200868source "drivers/hwmon/Kconfig"
869
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870#source "drivers/l3/Kconfig"
871
872source "drivers/misc/Kconfig"
873
Russell Kinga4e137a2005-08-18 10:06:59 +0100874source "drivers/mfd/Kconfig"
875
Richard Purdiec72a1d62006-03-31 02:31:04 -0800876source "drivers/leds/Kconfig"
877
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878source "drivers/media/Kconfig"
879
880source "drivers/video/Kconfig"
881
882source "sound/Kconfig"
883
884source "drivers/usb/Kconfig"
885
886source "drivers/mmc/Kconfig"
887
Alessandro Zummo12b824f2006-03-27 01:16:35 -0800888source "drivers/rtc/Kconfig"
889
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890endmenu
891
892source "fs/Kconfig"
893
894source "arch/arm/oprofile/Kconfig"
895
896source "arch/arm/Kconfig.debug"
897
898source "security/Kconfig"
899
900source "crypto/Kconfig"
901
902source "lib/Kconfig"