Kconfig 29.8 KB
Newer Older
Linus Torvalds's avatar
Linus Torvalds committed
1
2
3
4
5
6
7
8
9
10
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

mainmenu "Linux Kernel Configuration"

config ARM
	bool
	default y
11
	select RTC_LIB
12
	select SYS_SUPPORTS_APM_EMULATION
Mathieu Desnoyers's avatar
Mathieu Desnoyers committed
13
	select HAVE_OPROFILE
Mathieu Desnoyers's avatar
Mathieu Desnoyers committed
14
	select HAVE_KPROBES if (!XIP_KERNEL)
15
	select HAVE_KRETPROBES if (HAVE_KPROBES)
Linus Torvalds's avatar
Linus Torvalds committed
16
17
	help
	  The ARM series is a line of low-power-consumption RISC chip designs
18
	  licensed by ARM Ltd and targeted at embedded applications and
Linus Torvalds's avatar
Linus Torvalds committed
19
	  handhelds such as the Compaq IPAQ.  ARM-based PCs are no longer
20
	  manufactured, but legacy ARM-based PC hardware remains popular in
Linus Torvalds's avatar
Linus Torvalds committed
21
22
23
	  Europe.  There is an ARM Linux project with a web page at
	  <http://www.arm.linux.org.uk/>.

24
25
26
config SYS_SUPPORTS_APM_EMULATION
	bool

27
28
29
30
config GENERIC_GPIO
	bool
	default n

31
32
33
34
config GENERIC_TIME
	bool
	default n

35
36
37
38
config GENERIC_CLOCKEVENTS
	bool
	default n

39
40
41
42
43
config GENERIC_CLOCKEVENTS_BROADCAST
	bool
	depends on GENERIC_CLOCKEVENTS
	default y if SMP && !LOCAL_TIMERS

Linus Torvalds's avatar
Linus Torvalds committed
44
45
46
47
config MMU
	bool
	default y

Al Viro's avatar
Al Viro committed
48
49
50
51
config NO_IOPORT
	bool
	default n

Linus Torvalds's avatar
Linus Torvalds committed
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
config EISA
	bool
	---help---
	  The Extended Industry Standard Architecture (EISA) bus was
	  developed as an open alternative to the IBM MicroChannel bus.

	  The EISA bus provided some of the features of the IBM MicroChannel
	  bus while maintaining backward compatibility with cards made for
	  the older ISA bus.  The EISA bus saw limited use between 1988 and
	  1995 when it was made obsolete by the PCI bus.

	  Say Y here if you are building a kernel for an EISA-based machine.

	  Otherwise, say N.

config SBUS
	bool

config MCA
	bool
	help
	  MicroChannel Architecture is found in some IBM PS/2 machines and
	  laptops.  It is a bus system similar to PCI or ISA. See
	  <file:Documentation/mca.txt> (and especially the web page given
	  there) before attempting to build an MCA bus kernel.

78
79
80
81
config GENERIC_HARDIRQS
	bool
	default y

82
83
84
85
86
87
88
89
config STACKTRACE_SUPPORT
	bool
	default y

config LOCKDEP_SUPPORT
	bool
	default y

Russell King's avatar
Russell King committed
90
91
92
93
config TRACE_IRQFLAGS_SUPPORT
	bool
	default y

94
95
96
97
98
99
100
101
config HARDIRQS_SW_RESEND
	bool
	default y

config GENERIC_IRQ_PROBE
	bool
	default y

Nick Piggin's avatar
Nick Piggin committed
102
103
104
105
106
config GENERIC_LOCKBREAK
	bool
	default y
	depends on SMP && PREEMPT

Linus Torvalds's avatar
Linus Torvalds committed
107
108
109
110
111
112
113
config RWSEM_GENERIC_SPINLOCK
	bool
	default y

config RWSEM_XCHGADD_ALGORITHM
	bool

114
115
116
117
118
119
120
121
config ARCH_HAS_ILOG2_U32
	bool
	default n

config ARCH_HAS_ILOG2_U64
	bool
	default n

122
123
124
125
config GENERIC_HWEIGHT
	bool
	default y

Linus Torvalds's avatar
Linus Torvalds committed
126
127
128
129
config GENERIC_CALIBRATE_DELAY
	bool
	default y

130
131
132
config ARCH_SUPPORTS_AOUT
	def_bool y

133
134
135
config ARCH_MAY_HAVE_PC_FDC
	bool

136
137
138
139
config ZONE_DMA
	bool
	default y

Linus Torvalds's avatar
Linus Torvalds committed
140
141
142
143
144
145
config GENERIC_ISA_DMA
	bool

config FIQ
	bool

146
147
148
config ARCH_MTD_XIP
	bool

149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
if OPROFILE

config OPROFILE_ARMV6
	def_bool y
	depends on CPU_V6 && !SMP
	select OPROFILE_ARM11_CORE

config OPROFILE_MPCORE
	def_bool y
	depends on CPU_V6 && SMP
	select OPROFILE_ARM11_CORE

config OPROFILE_ARM11_CORE
	bool

endif

166
167
config VECTORS_BASE
	hex
168
	default 0xffff0000 if MMU || CPU_HIGH_VECTOR
169
170
171
172
173
	default DRAM_BASE if REMAP_VECTORS_TO_RAM
	default 0x00000000
	help
	  The base address of exception vectors.

Linus Torvalds's avatar
Linus Torvalds committed
174
175
176
177
178
179
source "init/Kconfig"

menu "System Type"

choice
	prompt "ARM system type"
180
	default ARCH_VERSATILE
Linus Torvalds's avatar
Linus Torvalds committed
181

182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
config ARCH_AAEC2000
	bool "Agilent AAEC-2000 based"
	select ARM_AMBA
	help
	  This enables support for systems based on the Agilent AAEC-2000

config ARCH_INTEGRATOR
	bool "ARM Ltd. Integrator family"
	select ARM_AMBA
	select ICST525
	help
	  Support for ARM's Integrator platform.

config ARCH_REALVIEW
	bool "ARM Ltd. RealView family"
	select ARM_AMBA
	select ICST307
199
	select GENERIC_TIME
200
	select GENERIC_CLOCKEVENTS
201
202
203
204
205
206
207
208
	help
	  This enables support for ARM Ltd RealView boards.

config ARCH_VERSATILE
	bool "ARM Ltd. Versatile family"
	select ARM_AMBA
	select ARM_VIC
	select ICST307
209
	select GENERIC_TIME
210
	select GENERIC_CLOCKEVENTS
211
212
213
	help
	  This enables support for ARM Ltd Versatile board.

214
215
config ARCH_AT91
	bool "Atmel AT91"
216
	select GENERIC_GPIO
217
	help
218
219
	  This enables support for systems based on the Atmel AT91RM9200,
	  AT91SAM9 and AT91CAP9 processors.
220

Linus Torvalds's avatar
Linus Torvalds committed
221
config ARCH_CLPS7500
222
	bool "Cirrus CL-PS7500FE"
Linus Torvalds's avatar
Linus Torvalds committed
223
	select TIMER_ACORN
224
	select ISA
225
	select NO_IOPORT
Sam Ravnborg's avatar
Sam Ravnborg committed
226
	select HAVE_IDE
227
228
	help
	  Support for the Cirrus Logic PS7500FE system-on-a-chip.
Linus Torvalds's avatar
Linus Torvalds committed
229
230

config ARCH_CLPS711X
231
	bool "Cirrus Logic CLPS711x/EP721x-based"
232
233
	help
	  Support for Cirrus Logic 711x/721x based boards.
Linus Torvalds's avatar
Linus Torvalds committed
234
235
236
237
238

config ARCH_CO285
	bool "Co-EBSA285"
	select FOOTBRIDGE
	select FOOTBRIDGE_ADDIN
Sam Ravnborg's avatar
Sam Ravnborg committed
239
	select HAVE_IDE
240
241
	help
	  Support for Intel's EBSA285 companion chip.
Linus Torvalds's avatar
Linus Torvalds committed
242
243
244

config ARCH_EBSA110
	bool "EBSA-110"
245
	select ISA
246
	select NO_IOPORT
Linus Torvalds's avatar
Linus Torvalds committed
247
248
	help
	  This is an evaluation board for the StrongARM processor available
249
	  from Digital. It has limited hardware on-board, including an
Linus Torvalds's avatar
Linus Torvalds committed
250
251
252
	  Ethernet interface, two PCMCIA sockets, two serial ports and a
	  parallel port.

253
254
255
256
config ARCH_EP93XX
	bool "EP93xx-based"
	select ARM_AMBA
	select ARM_VIC
257
	select GENERIC_GPIO
258
259
260
	help
	  This enables support for the Cirrus EP93xx series of CPUs.

Linus Torvalds's avatar
Linus Torvalds committed
261
262
263
config ARCH_FOOTBRIDGE
	bool "FootBridge"
	select FOOTBRIDGE
Sam Ravnborg's avatar
Sam Ravnborg committed
264
	select HAVE_IDE
265
266
267
	help
	  Support for systems based on the DC21285 companion chip
	  ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
Linus Torvalds's avatar
Linus Torvalds committed
268

269
270
271
config ARCH_NETX
	bool "Hilscher NetX based"
	select ARM_VIC
272
	help
273
274
275
276
277
278
279
280
281
282
	  This enables support for systems based on the Hilscher NetX Soc

config ARCH_H720X
	bool "Hynix HMS720x-based"
	select ISA_DMA_API
	help
	  This enables support for systems based on the Hynix HMS720x

config ARCH_IMX
	bool "IMX"
283
	select GENERIC_GPIO
284
285
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
286
287
	help
	  Support for Motorola's i.MX family of processors (MX1, MXL).
Linus Torvalds's avatar
Linus Torvalds committed
288

289
290
291
292
293
294
295
296
297
config ARCH_IOP13XX
	bool "IOP13xx-based"
	depends on MMU
	select PLAT_IOP
	select PCI
	select ARCH_SUPPORTS_MSI
	help
	  Support for Intel's IOP13XX (XScale) family of processors.

298
299
config ARCH_IOP32X
	bool "IOP32x-based"
300
	depends on MMU
301
	select PLAT_IOP
302
	select PCI
Sam Ravnborg's avatar
Sam Ravnborg committed
303
	select HAVE_IDE
304
	help
305
306
307
308
309
310
	  Support for Intel's 80219 and IOP32X (XScale) family of
	  processors.

config ARCH_IOP33X
	bool "IOP33x-based"
	depends on MMU
311
	select PLAT_IOP
312
	select PCI
Sam Ravnborg's avatar
Sam Ravnborg committed
313
	select HAVE_IDE
314
315
	help
	  Support for Intel's IOP33X (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
316

317
318
config ARCH_IXP23XX
 	bool "IXP23XX-based"
319
	depends on MMU
Sam Ravnborg's avatar
Sam Ravnborg committed
320
	select HAVE_IDE
321
 	select PCI
322
	help
323
	  Support for Intel's IXP23xx (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
324
325
326

config ARCH_IXP2000
	bool "IXP2400/2800-based"
327
	depends on MMU
328
	select PCI
329
330
	help
	  Support for Intel's IXP2400/2800 (XScale) family of processors.
Linus Torvalds's avatar
Linus Torvalds committed
331

332
333
config ARCH_IXP4XX
	bool "IXP4xx-based"
334
	depends on MMU
335
	select GENERIC_GPIO
336
337
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
Sam Ravnborg's avatar
Sam Ravnborg committed
338
	select HAVE_IDE
339
	help
340
	  Support for Intel's IXP4XX (XScale) family of processors.
341

Linus Torvalds's avatar
Linus Torvalds committed
342
343
344
config ARCH_L7200
	bool "LinkUp-L7200"
	select FIQ
Sam Ravnborg's avatar
Sam Ravnborg committed
345
	select HAVE_IDE
Linus Torvalds's avatar
Linus Torvalds committed
346
347
348
349
350
351
352
353
354
355
	help
	  Say Y here if you intend to run this kernel on a LinkUp Systems
	  L7200 Software Development Board which uses an ARM720T processor.
	  Information on this board can be obtained at:

	  <http://www.linkupsys.com/>

	  If you have any questions or comments about the Linux kernel port
	  to this board, send e-mail to <sjhill@cotw.com>.

356
357
config ARCH_KS8695
	bool "Micrel/Kendin KS8695"
358
	select GENERIC_GPIO
359
360
361
362
	help
	  Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
	  System-on-Chip devices.

363
364
config ARCH_NS9XXX
	bool "NetSilicon NS9xxx"
365
	select GENERIC_GPIO
366
	select GENERIC_TIME
367
	select GENERIC_CLOCKEVENTS
368
369
370
371
372
373
	help
	  Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
	  System.

	  <http://www.digi.com/products/microprocessors/index.jsp>

374
375
376
377
378
379
config ARCH_MXC
	bool "Freescale MXC/iMX-based"
	select ARCH_MTD_XIP
	help
	  Support for Freescale MXC/iMX-based family of processors

380
381
382
config ARCH_ORION
	bool "Marvell Orion"
	depends on MMU
Tzachi Perelstein's avatar
Tzachi Perelstein committed
383
	select PCI
Tzachi Perelstein's avatar
Tzachi Perelstein committed
384
	select GENERIC_GPIO
385
386
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
387
388
389
	help
	  Support for Marvell Orion System on Chip family.

390
391
392
393
394
config ARCH_PNX4008
	bool "Philips Nexperia PNX4008 Mobile"
	help
	  This enables support for Philips PNX4008 mobile platform.

Linus Torvalds's avatar
Linus Torvalds committed
395
config ARCH_PXA
eric miao's avatar
eric miao committed
396
	bool "PXA2xx/PXA3xx-based"
397
	depends on MMU
398
	select ARCH_MTD_XIP
399
	select GENERIC_GPIO
Sam Ravnborg's avatar
Sam Ravnborg committed
400
	select HAVE_IDE
401
	select HAVE_GPIO_LIB
402
	select GENERIC_TIME
403
	select GENERIC_CLOCKEVENTS
404
	select TICK_ONESHOT
405
	help
eric miao's avatar
eric miao committed
406
	  Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
Linus Torvalds's avatar
Linus Torvalds committed
407
408
409
410
411
412

config ARCH_RPC
	bool "RiscPC"
	select ARCH_ACORN
	select FIQ
	select TIMER_ACORN
413
	select ARCH_MAY_HAVE_PC_FDC
414
	select ISA_DMA_API
Al Viro's avatar
Al Viro committed
415
	select NO_IOPORT
Sam Ravnborg's avatar
Sam Ravnborg committed
416
	select HAVE_IDE
Linus Torvalds's avatar
Linus Torvalds committed
417
418
419
420
421
422
	help
	  On the Acorn Risc-PC, Linux can support the internal IDE disk and
	  CD-ROM interface, serial and parallel port, and the floppy drive.

config ARCH_SA1100
	bool "SA1100-based"
423
	select ISA
Russell King's avatar
Russell King committed
424
	select ARCH_DISCONTIGMEM_ENABLE
425
	select ARCH_MTD_XIP
426
	select GENERIC_GPIO
427
	select GENERIC_TIME
Sam Ravnborg's avatar
Sam Ravnborg committed
428
	select HAVE_IDE
429
430
	help
	  Support for StrongARM 11x0 based boards.
Linus Torvalds's avatar
Linus Torvalds committed
431
432

config ARCH_S3C2410
433
	bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
434
	select GENERIC_GPIO
Sam Ravnborg's avatar
Sam Ravnborg committed
435
	select HAVE_IDE
Linus Torvalds's avatar
Linus Torvalds committed
436
437
438
	help
	  Samsung S3C2410X CPU based systems, such as the Simtec Electronics
	  BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
439
	  the Samsung SMDK2410 development board (and derivatives).
Linus Torvalds's avatar
Linus Torvalds committed
440
441
442

config ARCH_SHARK
	bool "Shark"
Sam Ravnborg's avatar
Sam Ravnborg committed
443
	select HAVE_IDE
444
445
446
	select ISA
	select ISA_DMA
	select PCI
447
448
449
	help
	  Support for the StrongARM based Digital DNARD machine, also known
	  as "Shark" (<http://www.shark-linux.de/shark.html>).
Linus Torvalds's avatar
Linus Torvalds committed
450
451
452

config ARCH_LH7A40X
	bool "Sharp LH7A40X"
Sam Ravnborg's avatar
Sam Ravnborg committed
453
	select HAVE_IDE
Linus Torvalds's avatar
Linus Torvalds committed
454
455
456
457
458
459
	help
	  Say Y here for systems based on one of the Sharp LH7A40X
	  System on a Chip processors.  These CPUs include an ARM922T
	  core with a wide array of integrated devices for
	  hand-held and low-power applications.

460
461
462
463
config ARCH_DAVINCI
	bool "TI DaVinci"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
464
	select GENERIC_GPIO
465
466
467
	help
	  Support for TI's DaVinci platform.

468
469
470
471
472
473
474
config ARCH_OMAP
	bool "TI OMAP"
	select GENERIC_GPIO
	select GENERIC_TIME
	help
	  Support for TI's OMAP platform (OMAP1 and OMAP2).

475
476
477
478
479
480
481
482
483
484
485
config ARCH_MSM7X00A
	bool "Qualcomm MSM7X00A"
	select GENERIC_TIME
	select GENERIC_CLOCKEVENTS
	help
	  Support for Qualcomm MSM7X00A based systems.  This runs on the ARM11
	  apps processor of the MSM7X00A and depends on a shared memory
	  interface to the ARM9 modem processor which runs the baseband stack
	  and controls some vital subsystems (clock and power control, etc).
	  <http://www.cdmatech.com/products/msm7200_chipset_solution.jsp>

Linus Torvalds's avatar
Linus Torvalds committed
486
487
488
489
endchoice

source "arch/arm/mach-clps711x/Kconfig"

490
491
source "arch/arm/mach-ep93xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
492
493
494
495
source "arch/arm/mach-footbridge/Kconfig"

source "arch/arm/mach-integrator/Kconfig"

496
497
498
source "arch/arm/mach-iop32x/Kconfig"

source "arch/arm/mach-iop33x/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
499

500
501
source "arch/arm/mach-iop13xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
502
503
504
505
source "arch/arm/mach-ixp4xx/Kconfig"

source "arch/arm/mach-ixp2000/Kconfig"

506
507
source "arch/arm/mach-ixp23xx/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
508
509
510
511
source "arch/arm/mach-pxa/Kconfig"

source "arch/arm/mach-sa1100/Kconfig"

512
513
514
source "arch/arm/plat-omap/Kconfig"

source "arch/arm/mach-omap1/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
515

516
517
source "arch/arm/mach-omap2/Kconfig"

518
519
source "arch/arm/mach-orion/Kconfig"

520
source "arch/arm/plat-s3c24xx/Kconfig"
521
source "arch/arm/plat-s3c/Kconfig"
522
523
524

if ARCH_S3C2410
source "arch/arm/mach-s3c2400/Kconfig"
Linus Torvalds's avatar
Linus Torvalds committed
525
source "arch/arm/mach-s3c2410/Kconfig"
526
527
528
source "arch/arm/mach-s3c2412/Kconfig"
source "arch/arm/mach-s3c2440/Kconfig"
source "arch/arm/mach-s3c2442/Kconfig"
529
source "arch/arm/mach-s3c2443/Kconfig"
530
endif
Linus Torvalds's avatar
Linus Torvalds committed
531
532
533
534
535
536
537
538
539

source "arch/arm/mach-lh7a40x/Kconfig"

source "arch/arm/mach-imx/Kconfig"

source "arch/arm/mach-h720x/Kconfig"

source "arch/arm/mach-versatile/Kconfig"

540
541
source "arch/arm/mach-aaec2000/Kconfig"

542
543
source "arch/arm/mach-realview/Kconfig"

544
source "arch/arm/mach-at91/Kconfig"
545

546
547
source "arch/arm/plat-mxc/Kconfig"

548
549
source "arch/arm/mach-netx/Kconfig"

550
551
source "arch/arm/mach-ns9xxx/Kconfig"

552
553
source "arch/arm/mach-davinci/Kconfig"

554
555
source "arch/arm/mach-ks8695/Kconfig"

556
557
source "arch/arm/mach-msm/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
558
559
560
561
# Definitions to make life easier
config ARCH_ACORN
	bool

562
563
564
config PLAT_IOP
	bool

Linus Torvalds's avatar
Linus Torvalds committed
565
566
source arch/arm/mm/Kconfig

567
568
config IWMMXT
	bool "Enable iWMMXt support"
569
	depends on CPU_XSCALE || CPU_XSC3
eric miao's avatar
eric miao committed
570
	default y if PXA27x || PXA3xx
571
572
573
574
	help
	  Enable support for iWMMXt context switching at run time if
	  running on a CPU that supports it.

Linus Torvalds's avatar
Linus Torvalds committed
575
576
577
578
579
580
#  bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
config XSCALE_PMU
	bool
	depends on CPU_XSCALE && !XSCALE_PMU_TIMER
	default y

581
582
583
584
if !MMU
source "arch/arm/Kconfig-nommu"
endif

Linus Torvalds's avatar
Linus Torvalds committed
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
endmenu

source "arch/arm/common/Kconfig"

config FORCE_MAX_ZONEORDER
	int
	depends on SA1111
	default "9"

menu "Bus support"

config ARM_AMBA
	bool

config ISA
	bool
	help
	  Find out whether you have ISA slots on your motherboard.  ISA is the
	  name of a bus system, i.e. the way the CPU talks to the other stuff
	  inside your box.  Other bus systems are PCI, EISA, MicroChannel
	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;
	  newer boards don't support it.  If you have ISA, say Y, otherwise N.

608
# Select ISA DMA controller support
Linus Torvalds's avatar
Linus Torvalds committed
609
610
config ISA_DMA
	bool
611
	select ISA_DMA_API
Linus Torvalds's avatar
Linus Torvalds committed
612

613
# Select ISA DMA interface
614
615
616
config ISA_DMA_API
	bool

Linus Torvalds's avatar
Linus Torvalds committed
617
config PCI
Mike Rapoport's avatar
Mike Rapoport committed
618
	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
Linus Torvalds's avatar
Linus Torvalds committed
619
620
621
622
623
624
	help
	  Find out whether you have a PCI motherboard. PCI is the name of a
	  bus system, i.e. the way the CPU talks to the other stuff inside
	  your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
	  VESA. If you have PCI, say Y, otherwise N.

625
626
627
config PCI_SYSCALL
	def_bool PCI

Linus Torvalds's avatar
Linus Torvalds committed
628
629
630
631
632
633
# Select the host bridge type
config PCI_HOST_VIA82C505
	bool
	depends on PCI && ARCH_SHARK
	default y

Mike Rapoport's avatar
Mike Rapoport committed
634
635
636
637
638
639
config PCI_HOST_ITE8152
	bool
	depends on PCI && MACH_ARMCORE
	default y
	select DMABOUNCE

Linus Torvalds's avatar
Linus Torvalds committed
640
641
642
643
644
645
646
647
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

endmenu

menu "Kernel Features"

648
649
source "kernel/time/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
650
651
config SMP
	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
652
	depends on EXPERIMENTAL && REALVIEW_EB_ARM11MP
Linus Torvalds's avatar
Linus Torvalds committed
653
654
655
656
657
658
659
660
661
662
663
	help
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, like most personal computers, say N. If
	  you have a system with more than one CPU, say Y.

	  If you say N here, the kernel will run on single and multiprocessor
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on many, but not all, single
	  processor machines. On a single processor machine, the kernel will
	  run faster if you say N here.

Adrian Bunk's avatar
Adrian Bunk committed
664
	  See also <file:Documentation/i386/IO-APIC.txt>,
Linus Torvalds's avatar
Linus Torvalds committed
665
666
667
668
669
670
671
672
673
674
675
	  <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
	  <http://www.linuxdoc.org/docs.html#howto>.

	  If you don't know what to do here, say N.

config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
	default "4"

676
677
678
679
680
681
682
config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
	depends on SMP && HOTPLUG && EXPERIMENTAL
	help
	  Say Y here to experiment with turning CPUs off and on.  CPUs
	  can be controlled through /sys/devices/system/cpu.

683
684
config LOCAL_TIMERS
	bool "Use local timer interrupts"
685
	depends on SMP && REALVIEW_EB_ARM11MP
686
687
688
689
690
691
692
	default y
	help
	  Enable support for local timers on SMP platforms, rather then the
	  legacy IPI broadcast method.  Local timers allows the system
	  accounting to be spread across the timer interval, preventing a
	  "thundering herd" at every timer tick.

Linus Torvalds's avatar
Linus Torvalds committed
693
694
695
696
697
698
699
700
701
702
703
704
705
config PREEMPT
	bool "Preemptible Kernel (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	help
	  This option reduces the latency of the kernel when reacting to
	  real-time or interactive events by allowing a low priority process to
	  be preempted even if it is in kernel mode executing a system call.
	  This allows applications to run more reliably even when the system is
	  under load.

	  Say Y here if you are building a kernel for a desktop, embedded
	  or real-time system.  Say N if you are unsure.

706
707
config NO_IDLE_HZ
	bool "Dynamic tick timer"
708
	depends on !GENERIC_CLOCKEVENTS
709
710
711
712
713
714
715
716
717
718
719
720
721
	help
	  Select this option if you want to disable continuous timer ticks
	  and have them programmed to occur as required. This option saves
	  power as the system can remain in idle state for longer.

	  By default dynamic tick is disabled during the boot, and can be
	  manually enabled with:

	    echo 1 > /sys/devices/system/timer/timer0/dyn_tick

	  Alternatively, if you want dynamic tick automatically enabled
	  during boot, pass "dyntick=enable" via the kernel command string.

722
723
	  Please note that dynamic tick may affect the accuracy of
	  timekeeping on some platforms depending on the implementation.
724
725
	  Currently at least OMAP, PXA2xx and SA11x0 platforms are known
	  to have accurate timekeeping with dynamic tick.
726

727
728
729
730
config HZ
	int
	default 128 if ARCH_L7200
	default 200 if ARCH_EBSA110 || ARCH_S3C2410
731
	default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
732
	default AT91_TIMER_HZ if ARCH_AT91
733
734
	default 100

735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
config AEABI
	bool "Use the ARM EABI to compile the kernel"
	help
	  This option allows for the kernel to be compiled using the latest
	  ARM ABI (aka EABI).  This is only useful if you are using a user
	  space environment that is also compiled with EABI.

	  Since there are major incompatibilities between the legacy ABI and
	  EABI, especially with regard to structure member alignment, this
	  option also changes the kernel syscall calling convention to
	  disambiguate both ABIs and allow for backward compatibility support
	  (selected with CONFIG_OABI_COMPAT).

	  To use this you need GCC version 4.0.0 or later.

750
config OABI_COMPAT
751
	bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
752
	depends on AEABI && EXPERIMENTAL
753
754
755
756
757
758
759
760
761
762
763
764
765
766
	default y
	help
	  This option preserves the old syscall interface along with the
	  new (ARM EABI) one. It also provides a compatibility layer to
	  intercept syscalls that have structure arguments which layout
	  in memory differs between the legacy ABI and the new ARM EABI
	  (only for non "thumb" binaries). This option adds a tiny
	  overhead to all syscalls and produces a slightly larger kernel.
	  If you know you'll be using only pure EABI user space then you
	  can say N here. If this option is not selected and you attempt
	  to execute a legacy ABI binary then the result will be
	  UNPREDICTABLE (in fact it can be predicted that it won't work
	  at all). If in doubt say Y.

767
config ARCH_DISCONTIGMEM_ENABLE
Linus Torvalds's avatar
Linus Torvalds committed
768
	bool
769
	default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
Linus Torvalds's avatar
Linus Torvalds committed
770
771
772
773
774
775
	help
	  Say Y to support efficient handling of discontiguous physical memory,
	  for architectures which are either NUMA (Non-Uniform Memory Access)
	  or have huge holes in the physical address space for other reasons.
	  See <file:Documentation/vm/numa> for more.

776
777
778
779
780
781
config NODES_SHIFT
	int
	default "4" if ARCH_LH7A40X
	default "2"
	depends on NEED_MULTIPLE_NODES

782
783
source "mm/Kconfig"

Linus Torvalds's avatar
Linus Torvalds committed
784
785
786
787
788
789
config LEDS
	bool "Timer and CPU usage LEDs"
	depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
		   ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
		   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
		   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
790
		   ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
791
		   ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
792
		   ARCH_KS8695 || MACH_RD88F5182
Linus Torvalds's avatar
Linus Torvalds committed
793
794
795
796
797
798
799
800
801
802
803
804
805
	help
	  If you say Y here, the LEDs on your machine will be used
	  to provide useful information about your current system status.

	  If you are compiling a kernel for a NetWinder or EBSA-285, you will
	  be able to select which LEDs are active using the options below. If
	  you are compiling a kernel for the EBSA-110 or the LART however, the
	  red LED will simply flash regularly to indicate that the system is
	  still functional. It is safe to say Y here if you have a CATS
	  system, but the driver will do nothing.

config LEDS_TIMER
	bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
David Brownell's avatar
David Brownell committed
806
807
			    OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			    || MACH_OMAP_PERSEUS2
Linus Torvalds's avatar
Linus Torvalds committed
808
	depends on LEDS
809
	depends on !GENERIC_CLOCKEVENTS
Linus Torvalds's avatar
Linus Torvalds committed
810
811
812
813
814
815
816
817
818
819
820
821
822
823
	default y if ARCH_EBSA110
	help
	  If you say Y here, one of the system LEDs (the green one on the
	  NetWinder, the amber one on the EBSA285, or the red one on the LART)
	  will flash regularly to indicate that the system is still
	  operational. This is mainly useful to kernel hackers who are
	  debugging unstable kernels.

	  The LART uses the same LED for both Timer LED and CPU usage LED
	  functions. You may choose to use both, but the Timer LED function
	  will overrule the CPU usage LED.

config LEDS_CPU
	bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
David Brownell's avatar
David Brownell committed
824
825
826
			!ARCH_OMAP) \
			|| OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
			|| MACH_OMAP_PERSEUS2
Linus Torvalds's avatar
Linus Torvalds committed
827
828
829
830
831
832
833
834
835
836
837
838
	depends on LEDS
	help
	  If you say Y here, the red LED will be used to give a good real
	  time indication of CPU usage, by lighting whenever the idle task
	  is not currently executing.

	  The LART uses the same LED for both Timer LED and CPU usage LED
	  functions. You may choose to use both, but the Timer LED function
	  will overrule the CPU usage LED.

config ALIGNMENT_TRAP
	bool
839
	depends on CPU_CP15_MMU
Linus Torvalds's avatar
Linus Torvalds committed
840
841
	default y if !ARCH_EBSA110
	help
842
	  ARM processors cannot fetch/store information which is not
Linus Torvalds's avatar
Linus Torvalds committed
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
	  naturally aligned on the bus, i.e., a 4 byte fetch must start at an
	  address divisible by 4. On 32-bit ARM processors, these non-aligned
	  fetch/store instructions will be emulated in software if you say
	  here, which has a severe performance impact. This is necessary for
	  correct operation of some network protocols. With an IP-only
	  configuration it is safe to say N, otherwise say Y.

endmenu

menu "Boot options"

# Compressed boot loader in ROM.  Yes, we really want to ask about
# TEXT and BSS so we preserve their values in the config files.
config ZBOOT_ROM_TEXT
	hex "Compressed ROM boot loader base address"
	default "0"
	help
	  The physical address at which the ROM-able zImage is to be
	  placed in the target.  Platforms which normally make use of
	  ROM-able zImage formats normally set this to a suitable
	  value in their defconfig file.

	  If ZBOOT_ROM is not enabled, this has no effect.

config ZBOOT_ROM_BSS
	hex "Compressed ROM boot loader BSS address"
	default "0"
	help
871
872
873
874
875
876
	  The base address of an area of read/write memory in the target
	  for the ROM-able zImage which must be available while the
	  decompressor is running. It must be large enough to hold the
	  entire decompressed kernel plus an additional 128 KiB.
	  Platforms which normally make use of ROM-able zImage formats
	  normally set this to a suitable value in their defconfig file.
Linus Torvalds's avatar
Linus Torvalds committed
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926

	  If ZBOOT_ROM is not enabled, this has no effect.

config ZBOOT_ROM
	bool "Compressed boot loader in ROM/flash"
	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
	help
	  Say Y here if you intend to execute your compressed kernel image
	  (zImage) directly from ROM or flash.  If unsure, say N.

config CMDLINE
	string "Default kernel command string"
	default ""
	help
	  On some architectures (EBSA110 and CATS), there is currently no way
	  for the boot loader to pass arguments to the kernel. For these
	  architectures, you should supply some command-line options at build
	  time by entering them here. As a minimum, you should specify the
	  memory size and the root device (e.g., mem=64M root=/dev/nfs).

config XIP_KERNEL
	bool "Kernel Execute-In-Place from ROM"
	depends on !ZBOOT_ROM
	help
	  Execute-In-Place allows the kernel to run from non-volatile storage
	  directly addressable by the CPU, such as NOR flash. This saves RAM
	  space since the text section of the kernel is not loaded from flash
	  to RAM.  Read-write sections, such as the data section and stack,
	  are still copied to RAM.  The XIP kernel is not compressed since
	  it has to run directly from flash, so it will take more space to
	  store it.  The flash address used to link the kernel object files,
	  and for storing it, is configuration dependent. Therefore, if you
	  say Y here, you must know the proper physical address where to
	  store the kernel image depending on your own flash memory usage.

	  Also note that the make target becomes "make xipImage" rather than
	  "make zImage" or "make Image".  The final kernel binary to put in
	  ROM memory will be arch/arm/boot/xipImage.

	  If unsure, say N.

config XIP_PHYS_ADDR
	hex "XIP Kernel Physical Location"
	depends on XIP_KERNEL
	default "0x00080000"
	help
	  This is the physical address in your flash memory the kernel will
	  be linked for and stored to.  This address is dependent on your
	  own flash usage.

927
928
929
930
931
932
config KEXEC
	bool "Kexec system call (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	help
	  kexec is a system call that implements the ability to shutdown your
	  current kernel, and to start another kernel.  It is like a reboot
Matt LaPlante's avatar
Matt LaPlante committed
933
	  but it is independent of the system firmware.   And like a reboot
934
935
936
937
938
939
940
	  you can start any kernel with it, not just Linux.

	  It is an ongoing process to be certain the hardware in a machine
	  is properly shutdown, so do not be surprised if this code does not
	  initially work for you.  It may help to enable device hotplugging
	  support.

941
942
config ATAGS_PROC
	bool "Export atags in procfs"
943
944
	depends on KEXEC
	default y
945
946
947
948
	help
	  Should the atags used to boot the kernel be exported in an "atags"
	  file in procfs. Useful with kexec.

Linus Torvalds's avatar
Linus Torvalds committed
949
950
endmenu

Russell King's avatar
Russell King committed
951
if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX || ARCH_PXA)
Linus Torvalds's avatar
Linus Torvalds committed
952
953
954
955
956
957
958

menu "CPU Frequency scaling"

source "drivers/cpufreq/Kconfig"

config CPU_FREQ_SA1100
	bool
959
	depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
Linus Torvalds's avatar
Linus Torvalds committed
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
	default y

config CPU_FREQ_SA1110
	bool
	depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
	default y

config CPU_FREQ_INTEGRATOR
	tristate "CPUfreq driver for ARM Integrator CPUs"
	depends on ARCH_INTEGRATOR && CPU_FREQ
	default y
	help
	  This enables the CPUfreq driver for ARM Integrator CPUs.

	  For details, take a look at <file:Documentation/cpu-freq>.

	  If in doubt, say Y.

978
979
980
981
982
983
984
985
986
config CPU_FREQ_IMX
	tristate "CPUfreq driver for i.MX CPUs"
	depends on ARCH_IMX && CPU_FREQ
	default n
	help
	  This enables the CPUfreq driver for i.MX CPUs.

	  If in doubt, say N.

Russell King's avatar
Russell King committed
987
988
989
990
991
992
config CPU_FREQ_PXA
	bool
	depends on CPU_FREQ && ARCH_PXA && PXA25x
	default y
	select CPU_FREQ_DEFAULT_GOV_USERSPACE

Linus Torvalds's avatar
Linus Torvalds committed
993
994
995
996
997
998
999
1000
endmenu

endif

menu "Floating point emulation"

comment "At least one emulation must be selected"

For faster browsing, not all history is shown. View entire blame