Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
[deliverable/linux.git] / arch / arm / Kconfig
CommitLineData
1da177e4
LT
1#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux Kernel Configuration"
7
8config ARM
9 bool
10 default y
2064c946 11 select HAVE_IDE
12b824fb 12 select RTC_LIB
75e7153a 13 select SYS_SUPPORTS_APM_EMULATION
42d4b839 14 select HAVE_OPROFILE
3f550096 15 select HAVE_KPROBES if (!XIP_KERNEL)
9edddaa2 16 select HAVE_KRETPROBES if (HAVE_KPROBES)
014c257c
AS
17 select HAVE_FTRACE if (!XIP_KERNEL)
18 select HAVE_DYNAMIC_FTRACE if (HAVE_FTRACE)
1da177e4
LT
19 help
20 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 21 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 22 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 23 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
24 Europe. There is an ARM Linux project with a web page at
25 <http://www.arm.linux.org.uk/>.
26
1a189b97
RK
27config HAVE_PWM
28 bool
29
75e7153a
RB
30config SYS_SUPPORTS_APM_EMULATION
31 bool
32
0a938b97
DB
33config GENERIC_GPIO
34 bool
35 default n
36
746140c7
KH
37config GENERIC_TIME
38 bool
39 default n
40
0567a0c0
KH
41config GENERIC_CLOCKEVENTS
42 bool
43 default n
44
a8655e83
CM
45config GENERIC_CLOCKEVENTS_BROADCAST
46 bool
47 depends on GENERIC_CLOCKEVENTS
48 default y if SMP && !LOCAL_TIMERS
49
1da177e4
LT
50config MMU
51 bool
52 default y
53
5ea81769
AV
54config NO_IOPORT
55 bool
56 default n
57
1da177e4
LT
58config EISA
59 bool
60 ---help---
61 The Extended Industry Standard Architecture (EISA) bus was
62 developed as an open alternative to the IBM MicroChannel bus.
63
64 The EISA bus provided some of the features of the IBM MicroChannel
65 bus while maintaining backward compatibility with cards made for
66 the older ISA bus. The EISA bus saw limited use between 1988 and
67 1995 when it was made obsolete by the PCI bus.
68
69 Say Y here if you are building a kernel for an EISA-based machine.
70
71 Otherwise, say N.
72
73config SBUS
74 bool
75
76config MCA
77 bool
78 help
79 MicroChannel Architecture is found in some IBM PS/2 machines and
80 laptops. It is a bus system similar to PCI or ISA. See
81 <file:Documentation/mca.txt> (and especially the web page given
82 there) before attempting to build an MCA bus kernel.
83
4a2581a0
TG
84config GENERIC_HARDIRQS
85 bool
86 default y
87
f16fb1ec
RK
88config STACKTRACE_SUPPORT
89 bool
90 default y
91
f76e9154
NP
92config HAVE_LATENCYTOP_SUPPORT
93 bool
94 depends on !SMP
95 default y
96
f16fb1ec
RK
97config LOCKDEP_SUPPORT
98 bool
99 default y
100
7ad1bcb2
RK
101config TRACE_IRQFLAGS_SUPPORT
102 bool
103 default y
104
4a2581a0
TG
105config HARDIRQS_SW_RESEND
106 bool
107 default y
108
109config GENERIC_IRQ_PROBE
110 bool
111 default y
112
95c354fe
NP
113config GENERIC_LOCKBREAK
114 bool
115 default y
116 depends on SMP && PREEMPT
117
1da177e4
LT
118config RWSEM_GENERIC_SPINLOCK
119 bool
120 default y
121
122config RWSEM_XCHGADD_ALGORITHM
123 bool
124
f0d1b0b3
DH
125config ARCH_HAS_ILOG2_U32
126 bool
127 default n
128
129config ARCH_HAS_ILOG2_U64
130 bool
131 default n
132
b89c3b16
AM
133config GENERIC_HWEIGHT
134 bool
135 default y
136
1da177e4
LT
137config GENERIC_CALIBRATE_DELAY
138 bool
139 default y
140
b0b933c0
DH
141config ARCH_SUPPORTS_AOUT
142 def_bool y
143
a08b6b79
Z
144config ARCH_MAY_HAVE_PC_FDC
145 bool
146
5ac6da66
CL
147config ZONE_DMA
148 bool
149 default y
150
1da177e4
LT
151config GENERIC_ISA_DMA
152 bool
153
1da177e4
LT
154config FIQ
155 bool
156
034d2f5a
AV
157config ARCH_MTD_XIP
158 bool
159
60a752ef
PZ
160config GENERIC_HARDIRQS_NO__DO_IRQ
161 bool
162 def_bool y
163
c0ffa3a9
MD
164if OPROFILE
165
166config OPROFILE_ARMV6
167 def_bool y
168 depends on CPU_V6 && !SMP
169 select OPROFILE_ARM11_CORE
170
171config OPROFILE_MPCORE
172 def_bool y
173 depends on CPU_V6 && SMP
174 select OPROFILE_ARM11_CORE
175
176config OPROFILE_ARM11_CORE
177 bool
178
179endif
180
c760fc19
HC
181config VECTORS_BASE
182 hex
6afd6fae 183 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
184 default DRAM_BASE if REMAP_VECTORS_TO_RAM
185 default 0x00000000
186 help
187 The base address of exception vectors.
188
1da177e4
LT
189source "init/Kconfig"
190
191menu "System Type"
192
193choice
194 prompt "ARM system type"
6a0e2430 195 default ARCH_VERSATILE
1da177e4 196
4af6fee1
DS
197config ARCH_AAEC2000
198 bool "Agilent AAEC-2000 based"
199 select ARM_AMBA
200 help
201 This enables support for systems based on the Agilent AAEC-2000
202
203config ARCH_INTEGRATOR
204 bool "ARM Ltd. Integrator family"
205 select ARM_AMBA
206 select ICST525
207 help
208 Support for ARM's Integrator platform.
209
210config ARCH_REALVIEW
211 bool "ARM Ltd. RealView family"
212 select ARM_AMBA
213 select ICST307
85802afe 214 select GENERIC_TIME
ae30ceac 215 select GENERIC_CLOCKEVENTS
4af6fee1
DS
216 help
217 This enables support for ARM Ltd RealView boards.
218
219config ARCH_VERSATILE
220 bool "ARM Ltd. Versatile family"
221 select ARM_AMBA
222 select ARM_VIC
223 select ICST307
b49c87c2 224 select GENERIC_TIME
89df1272 225 select GENERIC_CLOCKEVENTS
4af6fee1
DS
226 help
227 This enables support for ARM Ltd Versatile board.
228
8fc5ffa0
AV
229config ARCH_AT91
230 bool "Atmel AT91"
0a938b97 231 select GENERIC_GPIO
4af6fee1 232 help
2b3b3516
AV
233 This enables support for systems based on the Atmel AT91RM9200,
234 AT91SAM9 and AT91CAP9 processors.
4af6fee1 235
1da177e4 236config ARCH_CLPS7500
4af6fee1 237 bool "Cirrus CL-PS7500FE"
1da177e4 238 select TIMER_ACORN
f7e68bbf 239 select ISA
e4169889 240 select NO_IOPORT
f999b8bd
MM
241 help
242 Support for the Cirrus Logic PS7500FE system-on-a-chip.
1da177e4
LT
243
244config ARCH_CLPS711X
4af6fee1 245 bool "Cirrus Logic CLPS711x/EP721x-based"
f999b8bd
MM
246 help
247 Support for Cirrus Logic 711x/721x based boards.
1da177e4 248
1da177e4
LT
249config ARCH_EBSA110
250 bool "EBSA-110"
f7e68bbf 251 select ISA
c5eb2a2b 252 select NO_IOPORT
1da177e4
LT
253 help
254 This is an evaluation board for the StrongARM processor available
f6c8965a 255 from Digital. It has limited hardware on-board, including an
1da177e4
LT
256 Ethernet interface, two PCMCIA sockets, two serial ports and a
257 parallel port.
258
e7736d47
LB
259config ARCH_EP93XX
260 bool "EP93xx-based"
261 select ARM_AMBA
262 select ARM_VIC
4e9f9fd5 263 select GENERIC_GPIO
b685004f 264 select HAVE_GPIO_LIB
e7736d47
LB
265 help
266 This enables support for the Cirrus EP93xx series of CPUs.
267
1da177e4
LT
268config ARCH_FOOTBRIDGE
269 bool "FootBridge"
270 select FOOTBRIDGE
f999b8bd
MM
271 help
272 Support for systems based on the DC21285 companion chip
273 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 274
4af6fee1
DS
275config ARCH_NETX
276 bool "Hilscher NetX based"
277 select ARM_VIC
f999b8bd 278 help
4af6fee1
DS
279 This enables support for systems based on the Hilscher NetX Soc
280
281config ARCH_H720X
282 bool "Hynix HMS720x-based"
283 select ISA_DMA_API
284 help
285 This enables support for systems based on the Hynix HMS720x
286
287config ARCH_IMX
288 bool "IMX"
b3e6a508 289 select GENERIC_GPIO
89bba435
PP
290 select GENERIC_TIME
291 select GENERIC_CLOCKEVENTS
4af6fee1
DS
292 help
293 Support for Motorola's i.MX family of processors (MX1, MXL).
1da177e4 294
3b938be6
RK
295config ARCH_IOP13XX
296 bool "IOP13xx-based"
297 depends on MMU
298 select PLAT_IOP
299 select PCI
300 select ARCH_SUPPORTS_MSI
301 help
302 Support for Intel's IOP13XX (XScale) family of processors.
303
3f7e5815
LB
304config ARCH_IOP32X
305 bool "IOP32x-based"
a4f7e763 306 depends on MMU
7ae1f7ec 307 select PLAT_IOP
f7e68bbf 308 select PCI
63f385cd
AP
309 select GENERIC_GPIO
310 select HAVE_GPIO_LIB
f999b8bd 311 help
3f7e5815
LB
312 Support for Intel's 80219 and IOP32X (XScale) family of
313 processors.
314
315config ARCH_IOP33X
316 bool "IOP33x-based"
317 depends on MMU
7ae1f7ec 318 select PLAT_IOP
3f7e5815 319 select PCI
63f385cd
AP
320 select GENERIC_GPIO
321 select HAVE_GPIO_LIB
3f7e5815
LB
322 help
323 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 324
3b938be6
RK
325config ARCH_IXP23XX
326 bool "IXP23XX-based"
a4f7e763 327 depends on MMU
3b938be6 328 select PCI
f999b8bd 329 help
3b938be6 330 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
331
332config ARCH_IXP2000
333 bool "IXP2400/2800-based"
a4f7e763 334 depends on MMU
f7e68bbf 335 select PCI
f999b8bd
MM
336 help
337 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 338
3b938be6
RK
339config ARCH_IXP4XX
340 bool "IXP4xx-based"
a4f7e763 341 depends on MMU
8858e9af 342 select GENERIC_GPIO
3b938be6
RK
343 select GENERIC_TIME
344 select GENERIC_CLOCKEVENTS
c4713074 345 help
3b938be6 346 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 347
1da177e4
LT
348config ARCH_L7200
349 bool "LinkUp-L7200"
350 select FIQ
351 help
352 Say Y here if you intend to run this kernel on a LinkUp Systems
353 L7200 Software Development Board which uses an ARM720T processor.
354 Information on this board can be obtained at:
355
356 <http://www.linkupsys.com/>
357
358 If you have any questions or comments about the Linux kernel port
359 to this board, send e-mail to <sjhill@cotw.com>.
360
651c74c7
SB
361config ARCH_KIRKWOOD
362 bool "Marvell Kirkwood"
363 select PCI
364 select GENERIC_TIME
365 select GENERIC_CLOCKEVENTS
366 select PLAT_ORION
367 help
368 Support for the following Marvell Kirkwood series SoCs:
369 88F6180, 88F6192 and 88F6281.
370
c53c9cf6
AV
371config ARCH_KS8695
372 bool "Micrel/Kendin KS8695"
8a87a996 373 select GENERIC_GPIO
c53c9cf6
AV
374 help
375 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
376 System-on-Chip devices.
377
9918cda5
UKK
378config ARCH_NS9XXX
379 bool "NetSilicon NS9xxx"
689f2a01 380 select GENERIC_GPIO
cef5975d 381 select GENERIC_TIME
c0bb87f7 382 select GENERIC_CLOCKEVENTS
9918cda5
UKK
383 help
384 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
385 System.
386
387 <http://www.digi.com/products/microprocessors/index.jsp>
388
777f9beb
LB
389config ARCH_LOKI
390 bool "Marvell Loki (88RC8480)"
391 select GENERIC_TIME
392 select GENERIC_CLOCKEVENTS
393 select PLAT_ORION
394 help
395 Support for the Marvell Loki (88RC8480) SoC.
396
794d15b2
SS
397config ARCH_MV78XX0
398 bool "Marvell MV78xx0"
399 select PCI
400 select GENERIC_TIME
401 select GENERIC_CLOCKEVENTS
402 select PLAT_ORION
403 help
404 Support for the following Marvell MV78xx0 series SoCs:
405 MV781x0, MV782x0.
406
52c543f9
QJ
407config ARCH_MXC
408 bool "Freescale MXC/iMX-based"
d0f349fb
JB
409 select GENERIC_TIME
410 select GENERIC_CLOCKEVENTS
52c543f9 411 select ARCH_MTD_XIP
07bd1a6c
JB
412 select GENERIC_GPIO
413 select HAVE_GPIO_LIB
52c543f9
QJ
414 help
415 Support for Freescale MXC/iMX-based family of processors
416
9dd0b194 417config ARCH_ORION5X
585cf175
TP
418 bool "Marvell Orion"
419 depends on MMU
038ee083 420 select PCI
01af72e4 421 select GENERIC_GPIO
51cbff1d
TP
422 select GENERIC_TIME
423 select GENERIC_CLOCKEVENTS
69b02f6a 424 select PLAT_ORION
585cf175 425 help
9dd0b194 426 Support for the following Marvell Orion 5x series SoCs:
d2b2a6bb
LB
427 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
428 Orion-2 (5281).
585cf175 429
4af6fee1
DS
430config ARCH_PNX4008
431 bool "Philips Nexperia PNX4008 Mobile"
432 help
433 This enables support for Philips PNX4008 mobile platform.
434
1da177e4 435config ARCH_PXA
2c8086a5 436 bool "PXA2xx/PXA3xx-based"
a4f7e763 437 depends on MMU
034d2f5a 438 select ARCH_MTD_XIP
0a938b97 439 select GENERIC_GPIO
1c44f5f1 440 select HAVE_GPIO_LIB
45cf5eef 441 select GENERIC_TIME
981d0f39 442 select GENERIC_CLOCKEVENTS
a88264c2 443 select TICK_ONESHOT
f999b8bd 444 help
2c8086a5 445 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
1da177e4
LT
446
447config ARCH_RPC
448 bool "RiscPC"
449 select ARCH_ACORN
450 select FIQ
451 select TIMER_ACORN
a08b6b79 452 select ARCH_MAY_HAVE_PC_FDC
341eb781 453 select HAVE_PATA_PLATFORM
065909b9 454 select ISA_DMA_API
5ea81769 455 select NO_IOPORT
1da177e4
LT
456 help
457 On the Acorn Risc-PC, Linux can support the internal IDE disk and
458 CD-ROM interface, serial and parallel port, and the floppy drive.
459
460config ARCH_SA1100
461 bool "SA1100-based"
f7e68bbf 462 select ISA
3cd9e19e 463 select ARCH_DISCONTIGMEM_ENABLE
05944d74
RK
464 select ARCH_SPARSEMEM_ENABLE
465 select ARCH_SELECT_MEMORY_MODEL
034d2f5a 466 select ARCH_MTD_XIP
0a938b97 467 select GENERIC_GPIO
d142b6e7 468 select GENERIC_TIME
3e238be2
RK
469 select GENERIC_CLOCKEVENTS
470 select TICK_ONESHOT
45528e38 471 select HAVE_GPIO_LIB
f999b8bd
MM
472 help
473 Support for StrongARM 11x0 based boards.
1da177e4
LT
474
475config ARCH_S3C2410
e4d06e39 476 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
0a938b97 477 select GENERIC_GPIO
1da177e4
LT
478 help
479 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
480 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 481 the Samsung SMDK2410 development board (and derivatives).
1da177e4
LT
482
483config ARCH_SHARK
484 bool "Shark"
f7e68bbf
RK
485 select ISA
486 select ISA_DMA
487 select PCI
f999b8bd
MM
488 help
489 Support for the StrongARM based Digital DNARD machine, also known
490 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4
LT
491
492config ARCH_LH7A40X
493 bool "Sharp LH7A40X"
494 help
495 Say Y here for systems based on one of the Sharp LH7A40X
496 System on a Chip processors. These CPUs include an ARM922T
497 core with a wide array of integrated devices for
498 hand-held and low-power applications.
499
7c6337e2
KH
500config ARCH_DAVINCI
501 bool "TI DaVinci"
502 select GENERIC_TIME
503 select GENERIC_CLOCKEVENTS
3d9edf09 504 select GENERIC_GPIO
7c6337e2
KH
505 help
506 Support for TI's DaVinci platform.
507
3b938be6
RK
508config ARCH_OMAP
509 bool "TI OMAP"
510 select GENERIC_GPIO
52e31344 511 select HAVE_GPIO_LIB
3b938be6 512 select GENERIC_TIME
06cad098 513 select GENERIC_CLOCKEVENTS
3b938be6
RK
514 help
515 Support for TI's OMAP platform (OMAP1 and OMAP2).
516
3042102a
BS
517config ARCH_MSM7X00A
518 bool "Qualcomm MSM7X00A"
519 select GENERIC_TIME
520 select GENERIC_CLOCKEVENTS
521 help
522 Support for Qualcomm MSM7X00A based systems. This runs on the ARM11
523 apps processor of the MSM7X00A and depends on a shared memory
524 interface to the ARM9 modem processor which runs the baseband stack
525 and controls some vital subsystems (clock and power control, etc).
526 <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>
527
1da177e4
LT
528endchoice
529
530source "arch/arm/mach-clps711x/Kconfig"
531
e7736d47
LB
532source "arch/arm/mach-ep93xx/Kconfig"
533
1da177e4
LT
534source "arch/arm/mach-footbridge/Kconfig"
535
536source "arch/arm/mach-integrator/Kconfig"
537
3f7e5815
LB
538source "arch/arm/mach-iop32x/Kconfig"
539
540source "arch/arm/mach-iop33x/Kconfig"
1da177e4 541
285f5fa7
DW
542source "arch/arm/mach-iop13xx/Kconfig"
543
1da177e4
LT
544source "arch/arm/mach-ixp4xx/Kconfig"
545
546source "arch/arm/mach-ixp2000/Kconfig"
547
c4713074
LB
548source "arch/arm/mach-ixp23xx/Kconfig"
549
777f9beb
LB
550source "arch/arm/mach-loki/Kconfig"
551
794d15b2
SS
552source "arch/arm/mach-mv78xx0/Kconfig"
553
1da177e4
LT
554source "arch/arm/mach-pxa/Kconfig"
555
556source "arch/arm/mach-sa1100/Kconfig"
557
d48af15e
TL
558source "arch/arm/plat-omap/Kconfig"
559
560source "arch/arm/mach-omap1/Kconfig"
1da177e4 561
1dbae815
TL
562source "arch/arm/mach-omap2/Kconfig"
563
9dd0b194 564source "arch/arm/mach-orion5x/Kconfig"
585cf175 565
651c74c7 566source "arch/arm/mach-kirkwood/Kconfig"
585cf175 567
a21765a7 568source "arch/arm/plat-s3c24xx/Kconfig"
d58153d8 569source "arch/arm/plat-s3c/Kconfig"
a21765a7
BD
570
571if ARCH_S3C2410
572source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 573source "arch/arm/mach-s3c2410/Kconfig"
a21765a7
BD
574source "arch/arm/mach-s3c2412/Kconfig"
575source "arch/arm/mach-s3c2440/Kconfig"
576source "arch/arm/mach-s3c2442/Kconfig"
e4d06e39 577source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 578endif
1da177e4
LT
579
580source "arch/arm/mach-lh7a40x/Kconfig"
581
582source "arch/arm/mach-imx/Kconfig"
583
584source "arch/arm/mach-h720x/Kconfig"
585
586source "arch/arm/mach-versatile/Kconfig"
587
038c5b60
BN
588source "arch/arm/mach-aaec2000/Kconfig"
589
8ad68bbf
CM
590source "arch/arm/mach-realview/Kconfig"
591
9d041268 592source "arch/arm/mach-at91/Kconfig"
73a59c1c 593
52c543f9
QJ
594source "arch/arm/plat-mxc/Kconfig"
595
bb6d8c88
SH
596source "arch/arm/mach-netx/Kconfig"
597
9918cda5
UKK
598source "arch/arm/mach-ns9xxx/Kconfig"
599
7c6337e2
KH
600source "arch/arm/mach-davinci/Kconfig"
601
c53c9cf6
AV
602source "arch/arm/mach-ks8695/Kconfig"
603
9e73c84c
BS
604source "arch/arm/mach-msm/Kconfig"
605
1da177e4
LT
606# Definitions to make life easier
607config ARCH_ACORN
608 bool
609
7ae1f7ec
LB
610config PLAT_IOP
611 bool
612
69b02f6a
LB
613config PLAT_ORION
614 bool
615
1da177e4
LT
616source arch/arm/mm/Kconfig
617
afe4b25e
LB
618config IWMMXT
619 bool "Enable iWMMXt support"
6340aa61 620 depends on CPU_XSCALE || CPU_XSC3
2c8086a5 621 default y if PXA27x || PXA3xx
afe4b25e
LB
622 help
623 Enable support for iWMMXt context switching at run time if
624 running on a CPU that supports it.
625
1da177e4
LT
626# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
627config XSCALE_PMU
628 bool
629 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
630 default y
631
3b93e7b0
HC
632if !MMU
633source "arch/arm/Kconfig-nommu"
634endif
635
1da177e4
LT
636endmenu
637
638source "arch/arm/common/Kconfig"
639
640config FORCE_MAX_ZONEORDER
641 int
642 depends on SA1111
643 default "9"
644
645menu "Bus support"
646
647config ARM_AMBA
648 bool
649
650config ISA
651 bool
1da177e4
LT
652 help
653 Find out whether you have ISA slots on your motherboard. ISA is the
654 name of a bus system, i.e. the way the CPU talks to the other stuff
655 inside your box. Other bus systems are PCI, EISA, MicroChannel
656 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
657 newer boards don't support it. If you have ISA, say Y, otherwise N.
658
065909b9 659# Select ISA DMA controller support
1da177e4
LT
660config ISA_DMA
661 bool
065909b9 662 select ISA_DMA_API
1da177e4 663
065909b9 664# Select ISA DMA interface
5cae841b
AV
665config ISA_DMA_API
666 bool
5cae841b 667
1da177e4 668config PCI
a0113a99 669 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1da177e4
LT
670 help
671 Find out whether you have a PCI motherboard. PCI is the name of a
672 bus system, i.e. the way the CPU talks to the other stuff inside
673 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
674 VESA. If you have PCI, say Y, otherwise N.
675
36e23590
MW
676config PCI_SYSCALL
677 def_bool PCI
678
1da177e4
LT
679# Select the host bridge type
680config PCI_HOST_VIA82C505
681 bool
682 depends on PCI && ARCH_SHARK
683 default y
684
a0113a99
MR
685config PCI_HOST_ITE8152
686 bool
687 depends on PCI && MACH_ARMCORE
688 default y
689 select DMABOUNCE
690
1da177e4
LT
691source "drivers/pci/Kconfig"
692
693source "drivers/pcmcia/Kconfig"
694
695endmenu
696
697menu "Kernel Features"
698
0567a0c0
KH
699source "kernel/time/Kconfig"
700
1da177e4
LT
701config SMP
702 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
78fdcb42 703 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
1da177e4
LT
704 help
705 This enables support for systems with more than one CPU. If you have
706 a system with only one CPU, like most personal computers, say N. If
707 you have a system with more than one CPU, say Y.
708
709 If you say N here, the kernel will run on single and multiprocessor
710 machines, but will use only one CPU of a multiprocessor machine. If
711 you say Y here, the kernel will run on many, but not all, single
712 processor machines. On a single processor machine, the kernel will
713 run faster if you say N here.
714
03502faa 715 See also <file:Documentation/i386/IO-APIC.txt>,
1da177e4
LT
716 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
717 <http://www.linuxdoc.org/docs.html#howto>.
718
719 If you don't know what to do here, say N.
720
721config NR_CPUS
722 int "Maximum number of CPUs (2-32)"
723 range 2 32
724 depends on SMP
725 default "4"
726
a054a811
RK
727config HOTPLUG_CPU
728 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
729 depends on SMP && HOTPLUG && EXPERIMENTAL
730 help
731 Say Y here to experiment with turning CPUs off and on. CPUs
732 can be controlled through /sys/devices/system/cpu.
733
37ee16ae
RK
734config LOCAL_TIMERS
735 bool "Use local timer interrupts"
78fdcb42 736 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP)
37ee16ae
RK
737 default y
738 help
739 Enable support for local timers on SMP platforms, rather then the
740 legacy IPI broadcast method. Local timers allows the system
741 accounting to be spread across the timer interval, preventing a
742 "thundering herd" at every timer tick.
743
1da177e4
LT
744config PREEMPT
745 bool "Preemptible Kernel (EXPERIMENTAL)"
746 depends on EXPERIMENTAL
747 help
748 This option reduces the latency of the kernel when reacting to
749 real-time or interactive events by allowing a low priority process to
750 be preempted even if it is in kernel mode executing a system call.
751 This allows applications to run more reliably even when the system is
752 under load.
753
754 Say Y here if you are building a kernel for a desktop, embedded
755 or real-time system. Say N if you are unsure.
756
f8065813
RK
757config HZ
758 int
759 default 128 if ARCH_L7200
760 default 200 if ARCH_EBSA110 || ARCH_S3C2410
bfe65704 761 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
5248c657 762 default AT91_TIMER_HZ if ARCH_AT91
f8065813
RK
763 default 100
764
704bdda0
NP
765config AEABI
766 bool "Use the ARM EABI to compile the kernel"
767 help
768 This option allows for the kernel to be compiled using the latest
769 ARM ABI (aka EABI). This is only useful if you are using a user
770 space environment that is also compiled with EABI.
771
772 Since there are major incompatibilities between the legacy ABI and
773 EABI, especially with regard to structure member alignment, this
774 option also changes the kernel syscall calling convention to
775 disambiguate both ABIs and allow for backward compatibility support
776 (selected with CONFIG_OABI_COMPAT).
777
778 To use this you need GCC version 4.0.0 or later.
779
6c90c872 780config OABI_COMPAT
a73a3ff1 781 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 782 depends on AEABI && EXPERIMENTAL
6c90c872
NP
783 default y
784 help
785 This option preserves the old syscall interface along with the
786 new (ARM EABI) one. It also provides a compatibility layer to
787 intercept syscalls that have structure arguments which layout
788 in memory differs between the legacy ABI and the new ARM EABI
789 (only for non "thumb" binaries). This option adds a tiny
790 overhead to all syscalls and produces a slightly larger kernel.
791 If you know you'll be using only pure EABI user space then you
792 can say N here. If this option is not selected and you attempt
793 to execute a legacy ABI binary then the result will be
794 UNPREDICTABLE (in fact it can be predicted that it won't work
795 at all). If in doubt say Y.
796
3f22ab27 797config ARCH_DISCONTIGMEM_ENABLE
1da177e4 798 bool
f7e68bbf 799 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
1da177e4
LT
800 help
801 Say Y to support efficient handling of discontiguous physical memory,
802 for architectures which are either NUMA (Non-Uniform Memory Access)
803 or have huge holes in the physical address space for other reasons.
804 See <file:Documentation/vm/numa> for more.
805
05944d74
RK
806config ARCH_SPARSEMEM_ENABLE
807 bool
808
809config ARCH_SELECT_MEMORY_MODEL
810 bool
811
c80d79d7
YG
812config NODES_SHIFT
813 int
814 default "4" if ARCH_LH7A40X
815 default "2"
816 depends on NEED_MULTIPLE_NODES
817
3f22ab27
DH
818source "mm/Kconfig"
819
1da177e4
LT
820config LEDS
821 bool "Timer and CPU usage LEDs"
e055d5bf 822 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1da177e4
LT
823 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
824 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
825 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 826 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
c53c9cf6 827 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
817eb210 828 ARCH_KS8695 || MACH_RD88F5182
1da177e4
LT
829 help
830 If you say Y here, the LEDs on your machine will be used
831 to provide useful information about your current system status.
832
833 If you are compiling a kernel for a NetWinder or EBSA-285, you will
834 be able to select which LEDs are active using the options below. If
835 you are compiling a kernel for the EBSA-110 or the LART however, the
836 red LED will simply flash regularly to indicate that the system is
837 still functional. It is safe to say Y here if you have a CATS
838 system, but the driver will do nothing.
839
840config LEDS_TIMER
841 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
eebdf7d7
DB
842 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
843 || MACH_OMAP_PERSEUS2
1da177e4 844 depends on LEDS
0567a0c0 845 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
846 default y if ARCH_EBSA110
847 help
848 If you say Y here, one of the system LEDs (the green one on the
849 NetWinder, the amber one on the EBSA285, or the red one on the LART)
850 will flash regularly to indicate that the system is still
851 operational. This is mainly useful to kernel hackers who are
852 debugging unstable kernels.
853
854 The LART uses the same LED for both Timer LED and CPU usage LED
855 functions. You may choose to use both, but the Timer LED function
856 will overrule the CPU usage LED.
857
858config LEDS_CPU
859 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
eebdf7d7
DB
860 !ARCH_OMAP) \
861 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
862 || MACH_OMAP_PERSEUS2
1da177e4
LT
863 depends on LEDS
864 help
865 If you say Y here, the red LED will be used to give a good real
866 time indication of CPU usage, by lighting whenever the idle task
867 is not currently executing.
868
869 The LART uses the same LED for both Timer LED and CPU usage LED
870 functions. You may choose to use both, but the Timer LED function
871 will overrule the CPU usage LED.
872
873config ALIGNMENT_TRAP
874 bool
f12d0d7c 875 depends on CPU_CP15_MMU
1da177e4
LT
876 default y if !ARCH_EBSA110
877 help
84eb8d06 878 ARM processors cannot fetch/store information which is not
1da177e4
LT
879 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
880 address divisible by 4. On 32-bit ARM processors, these non-aligned
881 fetch/store instructions will be emulated in software if you say
882 here, which has a severe performance impact. This is necessary for
883 correct operation of some network protocols. With an IP-only
884 configuration it is safe to say N, otherwise say Y.
885
886endmenu
887
888menu "Boot options"
889
890# Compressed boot loader in ROM. Yes, we really want to ask about
891# TEXT and BSS so we preserve their values in the config files.
892config ZBOOT_ROM_TEXT
893 hex "Compressed ROM boot loader base address"
894 default "0"
895 help
896 The physical address at which the ROM-able zImage is to be
897 placed in the target. Platforms which normally make use of
898 ROM-able zImage formats normally set this to a suitable
899 value in their defconfig file.
900
901 If ZBOOT_ROM is not enabled, this has no effect.
902
903config ZBOOT_ROM_BSS
904 hex "Compressed ROM boot loader BSS address"
905 default "0"
906 help
f8c440b2
DF
907 The base address of an area of read/write memory in the target
908 for the ROM-able zImage which must be available while the
909 decompressor is running. It must be large enough to hold the
910 entire decompressed kernel plus an additional 128 KiB.
911 Platforms which normally make use of ROM-able zImage formats
912 normally set this to a suitable value in their defconfig file.
1da177e4
LT
913
914 If ZBOOT_ROM is not enabled, this has no effect.
915
916config ZBOOT_ROM
917 bool "Compressed boot loader in ROM/flash"
918 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
919 help
920 Say Y here if you intend to execute your compressed kernel image
921 (zImage) directly from ROM or flash. If unsure, say N.
922
923config CMDLINE
924 string "Default kernel command string"
925 default ""
926 help
927 On some architectures (EBSA110 and CATS), there is currently no way
928 for the boot loader to pass arguments to the kernel. For these
929 architectures, you should supply some command-line options at build
930 time by entering them here. As a minimum, you should specify the
931 memory size and the root device (e.g., mem=64M root=/dev/nfs).
932
933config XIP_KERNEL
934 bool "Kernel Execute-In-Place from ROM"
935 depends on !ZBOOT_ROM
936 help
937 Execute-In-Place allows the kernel to run from non-volatile storage
938 directly addressable by the CPU, such as NOR flash. This saves RAM
939 space since the text section of the kernel is not loaded from flash
940 to RAM. Read-write sections, such as the data section and stack,
941 are still copied to RAM. The XIP kernel is not compressed since
942 it has to run directly from flash, so it will take more space to
943 store it. The flash address used to link the kernel object files,
944 and for storing it, is configuration dependent. Therefore, if you
945 say Y here, you must know the proper physical address where to
946 store the kernel image depending on your own flash memory usage.
947
948 Also note that the make target becomes "make xipImage" rather than
949 "make zImage" or "make Image". The final kernel binary to put in
950 ROM memory will be arch/arm/boot/xipImage.
951
952 If unsure, say N.
953
954config XIP_PHYS_ADDR
955 hex "XIP Kernel Physical Location"
956 depends on XIP_KERNEL
957 default "0x00080000"
958 help
959 This is the physical address in your flash memory the kernel will
960 be linked for and stored to. This address is dependent on your
961 own flash usage.
962
c587e4a6
RP
963config KEXEC
964 bool "Kexec system call (EXPERIMENTAL)"
965 depends on EXPERIMENTAL
966 help
967 kexec is a system call that implements the ability to shutdown your
968 current kernel, and to start another kernel. It is like a reboot
01dd2fbf 969 but it is independent of the system firmware. And like a reboot
c587e4a6
RP
970 you can start any kernel with it, not just Linux.
971
972 It is an ongoing process to be certain the hardware in a machine
973 is properly shutdown, so do not be surprised if this code does not
974 initially work for you. It may help to enable device hotplugging
975 support.
976
4cd9d6f7
RP
977config ATAGS_PROC
978 bool "Export atags in procfs"
b98d7291
UL
979 depends on KEXEC
980 default y
4cd9d6f7
RP
981 help
982 Should the atags used to boot the kernel be exported in an "atags"
983 file in procfs. Useful with kexec.
984
1da177e4
LT
985endmenu
986
9e2697ff 987if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
1da177e4
LT
988
989menu "CPU Frequency scaling"
990
991source "drivers/cpufreq/Kconfig"
992
993config CPU_FREQ_SA1100
994 bool
07c6d48f 995 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1da177e4
LT
996 default y
997
998config CPU_FREQ_SA1110
999 bool
1000 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1001 default y
1002
1003config CPU_FREQ_INTEGRATOR
1004 tristate "CPUfreq driver for ARM Integrator CPUs"
1005 depends on ARCH_INTEGRATOR && CPU_FREQ
1006 default y
1007 help
1008 This enables the CPUfreq driver for ARM Integrator CPUs.
1009
1010 For details, take a look at <file:Documentation/cpu-freq>.
1011
1012 If in doubt, say Y.
1013
3c8cd0cc
PP
1014config CPU_FREQ_IMX
1015 tristate "CPUfreq driver for i.MX CPUs"
1016 depends on ARCH_IMX && CPU_FREQ
1017 default n
1018 help
1019 This enables the CPUfreq driver for i.MX CPUs.
1020
1021 If in doubt, say N.
1022
9e2697ff
RK
1023config CPU_FREQ_PXA
1024 bool
1025 depends on CPU_FREQ && ARCH_PXA && PXA25x
1026 default y
1027 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1028
1da177e4
LT
1029endmenu
1030
1031endif
1032
1033menu "Floating point emulation"
1034
1035comment "At least one emulation must be selected"
1036
1037config FPE_NWFPE
1038 bool "NWFPE math emulation"
8993a44c 1039 depends on !AEABI || OABI_COMPAT
1da177e4
LT
1040 ---help---
1041 Say Y to include the NWFPE floating point emulator in the kernel.
1042 This is necessary to run most binaries. Linux does not currently
1043 support floating point hardware so you need to say Y here even if
1044 your machine has an FPA or floating point co-processor podule.
1045
1046 You may say N here if you are going to load the Acorn FPEmulator
1047 early in the bootup.
1048
1049config FPE_NWFPE_XP
1050 bool "Support extended precision"
bedf142b 1051 depends on FPE_NWFPE
1da177e4
LT
1052 help
1053 Say Y to include 80-bit support in the kernel floating-point
1054 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1055 Note that gcc does not generate 80-bit operations by default,
1056 so in most cases this option only enlarges the size of the
1057 floating point emulator without any good reason.
1058
1059 You almost surely want to say N here.
1060
1061config FPE_FASTFPE
1062 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 1063 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
1064 ---help---
1065 Say Y here to include the FAST floating point emulator in the kernel.
1066 This is an experimental much faster emulator which now also has full
1067 precision for the mantissa. It does not support any exceptions.
1068 It is very simple, and approximately 3-6 times faster than NWFPE.
1069
1070 It should be sufficient for most programs. It may be not suitable
1071 for scientific calculations, but you have to check this for yourself.
1072 If you do not feel you need a faster FP emulation you should better
1073 choose NWFPE.
1074
1075config VFP
1076 bool "VFP-format floating point maths"
c00d4ffd 1077 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1da177e4
LT
1078 help
1079 Say Y to include VFP support code in the kernel. This is needed
1080 if your hardware includes a VFP unit.
1081
1082 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1083 release notes and additional status information.
1084
1085 Say N if your target does not have VFP hardware.
1086
25ebee02
CM
1087config VFPv3
1088 bool
1089 depends on VFP
1090 default y if CPU_V7
1091
b5872db4
CM
1092config NEON
1093 bool "Advanced SIMD (NEON) Extension support"
1094 depends on VFPv3 && CPU_V7
1095 help
1096 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1097 Extension.
1098
1da177e4
LT
1099endmenu
1100
1101menu "Userspace binary formats"
1102
1103source "fs/Kconfig.binfmt"
1104
1105config ARTHUR
1106 tristate "RISC OS personality"
704bdda0 1107 depends on !AEABI
1da177e4
LT
1108 help
1109 Say Y here to include the kernel code necessary if you want to run
1110 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1111 experimental; if this sounds frightening, say N and sleep in peace.
1112 You can also say M here to compile this support as a module (which
1113 will be called arthur).
1114
1115endmenu
1116
1117menu "Power management options"
1118
eceab4ac 1119source "kernel/power/Kconfig"
1da177e4 1120
f4cb5700
JB
1121config ARCH_SUSPEND_POSSIBLE
1122 def_bool y
1123
1da177e4
LT
1124endmenu
1125
d5950b43
SR
1126source "net/Kconfig"
1127
1da177e4
LT
1128menu "Device Drivers"
1129
1130source "drivers/base/Kconfig"
1131
c35bf4a5
PM
1132source "drivers/connector/Kconfig"
1133
f12d0d7c 1134if ALIGNMENT_TRAP || !CPU_CP15_MMU
1da177e4
LT
1135source "drivers/mtd/Kconfig"
1136endif
1137
1138source "drivers/parport/Kconfig"
1139
1140source "drivers/pnp/Kconfig"
1141
1142source "drivers/block/Kconfig"
1143
58273e55
RK
1144# misc before ide - BLK_DEV_SGIIOC4 depends on SGI_IOC4
1145
1146source "drivers/misc/Kconfig"
1147
1da177e4 1148source "drivers/ide/Kconfig"
1da177e4
LT
1149
1150source "drivers/scsi/Kconfig"
1151
eb370f0b
MM
1152source "drivers/ata/Kconfig"
1153
1da177e4
LT
1154source "drivers/md/Kconfig"
1155
1156source "drivers/message/fusion/Kconfig"
1157
1158source "drivers/ieee1394/Kconfig"
1159
1160source "drivers/message/i2o/Kconfig"
1161
d5950b43 1162source "drivers/net/Kconfig"
1da177e4
LT
1163
1164source "drivers/isdn/Kconfig"
1165
1166# input before char - char/joystick depends on it. As does USB.
1167
1168source "drivers/input/Kconfig"
1169
1170source "drivers/char/Kconfig"
1171
1172source "drivers/i2c/Kconfig"
1173
8ae12a0d
DB
1174source "drivers/spi/Kconfig"
1175
a9c5fff5
DB
1176source "drivers/gpio/Kconfig"
1177
04916c0e
AZ
1178source "drivers/w1/Kconfig"
1179
58273e55
RK
1180source "drivers/power/Kconfig"
1181
ad2f931d
JD
1182source "drivers/hwmon/Kconfig"
1183
70dfa3f8
RK
1184source "drivers/watchdog/Kconfig"
1185
58273e55 1186source "drivers/ssb/Kconfig"
1da177e4 1187
58273e55 1188#source "drivers/l3/Kconfig"
1da177e4 1189
a4e137ab
RK
1190source "drivers/mfd/Kconfig"
1191
1da177e4
LT
1192source "drivers/media/Kconfig"
1193
1194source "drivers/video/Kconfig"
1195
1196source "sound/Kconfig"
1197
c2dade51
SH
1198source "drivers/hid/Kconfig"
1199
1da177e4
LT
1200source "drivers/usb/Kconfig"
1201
1202source "drivers/mmc/Kconfig"
1203
58273e55
RK
1204source "drivers/leds/Kconfig"
1205
12b824fb
AZ
1206source "drivers/rtc/Kconfig"
1207
5816815f
DW
1208source "drivers/dma/Kconfig"
1209
abf07b19
DW
1210source "drivers/dca/Kconfig"
1211
2dc034a8
HJK
1212source "drivers/uio/Kconfig"
1213
1da177e4
LT
1214endmenu
1215
1216source "fs/Kconfig"
1217
1da177e4
LT
1218source "arch/arm/Kconfig.debug"
1219
1220source "security/Kconfig"
1221
1222source "crypto/Kconfig"
1223
1224source "lib/Kconfig"
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