[ARM] 4430/1: davinci: clock control support
[GitHub/mt8127/android_kernel_alcatel_ttab.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
12b824fb 11 select RTC_LIB
75e7153a 12 select SYS_SUPPORTS_APM_EMULATION
1da177e4
LT
13 help
14 The ARM series is a line of low-power-consumption RISC chip designs
f6c8965a 15 licensed by ARM Ltd and targeted at embedded applications and
1da177e4 16 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
f6c8965a 17 manufactured, but legacy ARM-based PC hardware remains popular in
1da177e4
LT
18 Europe. There is an ARM Linux project with a web page at
19 <http://www.arm.linux.org.uk/>.
20
75e7153a
RB
21config SYS_SUPPORTS_APM_EMULATION
22 bool
23
0a938b97
DB
24config GENERIC_GPIO
25 bool
26 default n
27
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KH
28config GENERIC_TIME
29 bool
30 default n
31
0567a0c0
KH
32config GENERIC_CLOCKEVENTS
33 bool
34 default n
35
1da177e4
LT
36config MMU
37 bool
38 default y
39
5ea81769
AV
40config NO_IOPORT
41 bool
42 default n
43
1da177e4
LT
44config EISA
45 bool
46 ---help---
47 The Extended Industry Standard Architecture (EISA) bus was
48 developed as an open alternative to the IBM MicroChannel bus.
49
50 The EISA bus provided some of the features of the IBM MicroChannel
51 bus while maintaining backward compatibility with cards made for
52 the older ISA bus. The EISA bus saw limited use between 1988 and
53 1995 when it was made obsolete by the PCI bus.
54
55 Say Y here if you are building a kernel for an EISA-based machine.
56
57 Otherwise, say N.
58
59config SBUS
60 bool
61
62config MCA
63 bool
64 help
65 MicroChannel Architecture is found in some IBM PS/2 machines and
66 laptops. It is a bus system similar to PCI or ISA. See
67 <file:Documentation/mca.txt> (and especially the web page given
68 there) before attempting to build an MCA bus kernel.
69
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TG
70config GENERIC_HARDIRQS
71 bool
72 default y
73
f16fb1ec
RK
74config STACKTRACE_SUPPORT
75 bool
76 default y
77
78config LOCKDEP_SUPPORT
79 bool
80 default y
81
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RK
82config TRACE_IRQFLAGS_SUPPORT
83 bool
84 default y
85
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TG
86config HARDIRQS_SW_RESEND
87 bool
88 default y
89
90config GENERIC_IRQ_PROBE
91 bool
92 default y
93
1da177e4
LT
94config RWSEM_GENERIC_SPINLOCK
95 bool
96 default y
97
98config RWSEM_XCHGADD_ALGORITHM
99 bool
100
f0d1b0b3
DH
101config ARCH_HAS_ILOG2_U32
102 bool
103 default n
104
105config ARCH_HAS_ILOG2_U64
106 bool
107 default n
108
b89c3b16
AM
109config GENERIC_HWEIGHT
110 bool
111 default y
112
1da177e4
LT
113config GENERIC_CALIBRATE_DELAY
114 bool
115 default y
116
a08b6b79
AV
117config ARCH_MAY_HAVE_PC_FDC
118 bool
119
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CL
120config ZONE_DMA
121 bool
122 default y
123
1da177e4
LT
124config GENERIC_ISA_DMA
125 bool
126
1da177e4
LT
127config FIQ
128 bool
129
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AV
130config ARCH_MTD_XIP
131 bool
132
c760fc19
HC
133config VECTORS_BASE
134 hex
6afd6fae 135 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
c760fc19
HC
136 default DRAM_BASE if REMAP_VECTORS_TO_RAM
137 default 0x00000000
138 help
139 The base address of exception vectors.
140
1da177e4
LT
141source "init/Kconfig"
142
143menu "System Type"
144
145choice
146 prompt "ARM system type"
6a0e2430 147 default ARCH_VERSATILE
1da177e4 148
4af6fee1
DS
149config ARCH_AAEC2000
150 bool "Agilent AAEC-2000 based"
151 select ARM_AMBA
152 help
153 This enables support for systems based on the Agilent AAEC-2000
154
155config ARCH_INTEGRATOR
156 bool "ARM Ltd. Integrator family"
157 select ARM_AMBA
158 select ICST525
159 help
160 Support for ARM's Integrator platform.
161
162config ARCH_REALVIEW
163 bool "ARM Ltd. RealView family"
164 select ARM_AMBA
165 select ICST307
166 help
167 This enables support for ARM Ltd RealView boards.
168
169config ARCH_VERSATILE
170 bool "ARM Ltd. Versatile family"
171 select ARM_AMBA
172 select ARM_VIC
173 select ICST307
b49c87c2 174 select GENERIC_TIME
89df1272 175 select GENERIC_CLOCKEVENTS
4af6fee1
DS
176 help
177 This enables support for ARM Ltd Versatile board.
178
8fc5ffa0
AV
179config ARCH_AT91
180 bool "Atmel AT91"
0a938b97 181 select GENERIC_GPIO
4af6fee1 182 help
8fc5ffa0
AV
183 This enables support for systems based on the Atmel AT91RM9200
184 and AT91SAM9xxx processors.
4af6fee1 185
1da177e4 186config ARCH_CLPS7500
4af6fee1 187 bool "Cirrus CL-PS7500FE"
1da177e4 188 select TIMER_ACORN
f7e68bbf 189 select ISA
e4169889 190 select NO_IOPORT
f999b8bd
MM
191 help
192 Support for the Cirrus Logic PS7500FE system-on-a-chip.
1da177e4
LT
193
194config ARCH_CLPS711X
4af6fee1 195 bool "Cirrus Logic CLPS711x/EP721x-based"
f999b8bd
MM
196 help
197 Support for Cirrus Logic 711x/721x based boards.
1da177e4
LT
198
199config ARCH_CO285
200 bool "Co-EBSA285"
201 select FOOTBRIDGE
202 select FOOTBRIDGE_ADDIN
f999b8bd
MM
203 help
204 Support for Intel's EBSA285 companion chip.
1da177e4
LT
205
206config ARCH_EBSA110
207 bool "EBSA-110"
f7e68bbf 208 select ISA
c5eb2a2b 209 select NO_IOPORT
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210 help
211 This is an evaluation board for the StrongARM processor available
f6c8965a 212 from Digital. It has limited hardware on-board, including an
1da177e4
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213 Ethernet interface, two PCMCIA sockets, two serial ports and a
214 parallel port.
215
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LB
216config ARCH_EP93XX
217 bool "EP93xx-based"
218 select ARM_AMBA
219 select ARM_VIC
220 help
221 This enables support for the Cirrus EP93xx series of CPUs.
222
1da177e4
LT
223config ARCH_FOOTBRIDGE
224 bool "FootBridge"
225 select FOOTBRIDGE
f999b8bd
MM
226 help
227 Support for systems based on the DC21285 companion chip
228 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
1da177e4 229
4af6fee1
DS
230config ARCH_NETX
231 bool "Hilscher NetX based"
232 select ARM_VIC
f999b8bd 233 help
4af6fee1
DS
234 This enables support for systems based on the Hilscher NetX Soc
235
236config ARCH_H720X
237 bool "Hynix HMS720x-based"
238 select ISA_DMA_API
239 help
240 This enables support for systems based on the Hynix HMS720x
241
242config ARCH_IMX
243 bool "IMX"
244 help
245 Support for Motorola's i.MX family of processors (MX1, MXL).
1da177e4 246
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RK
247config ARCH_IOP13XX
248 bool "IOP13xx-based"
249 depends on MMU
250 select PLAT_IOP
251 select PCI
252 select ARCH_SUPPORTS_MSI
253 help
254 Support for Intel's IOP13XX (XScale) family of processors.
255
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LB
256config ARCH_IOP32X
257 bool "IOP32x-based"
a4f7e763 258 depends on MMU
7ae1f7ec 259 select PLAT_IOP
f7e68bbf 260 select PCI
f999b8bd 261 help
3f7e5815
LB
262 Support for Intel's 80219 and IOP32X (XScale) family of
263 processors.
264
265config ARCH_IOP33X
266 bool "IOP33x-based"
267 depends on MMU
7ae1f7ec 268 select PLAT_IOP
3f7e5815
LB
269 select PCI
270 help
271 Support for Intel's IOP33X (XScale) family of processors.
1da177e4 272
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RK
273config ARCH_IXP23XX
274 bool "IXP23XX-based"
a4f7e763 275 depends on MMU
3b938be6 276 select PCI
f999b8bd 277 help
3b938be6 278 Support for Intel's IXP23xx (XScale) family of processors.
1da177e4
LT
279
280config ARCH_IXP2000
281 bool "IXP2400/2800-based"
a4f7e763 282 depends on MMU
f7e68bbf 283 select PCI
f999b8bd
MM
284 help
285 Support for Intel's IXP2400/2800 (XScale) family of processors.
1da177e4 286
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RK
287config ARCH_IXP4XX
288 bool "IXP4xx-based"
a4f7e763 289 depends on MMU
8858e9af 290 select GENERIC_GPIO
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RK
291 select GENERIC_TIME
292 select GENERIC_CLOCKEVENTS
c4713074 293 help
3b938be6 294 Support for Intel's IXP4XX (XScale) family of processors.
c4713074 295
1da177e4
LT
296config ARCH_L7200
297 bool "LinkUp-L7200"
298 select FIQ
299 help
300 Say Y here if you intend to run this kernel on a LinkUp Systems
301 L7200 Software Development Board which uses an ARM720T processor.
302 Information on this board can be obtained at:
303
304 <http://www.linkupsys.com/>
305
306 If you have any questions or comments about the Linux kernel port
307 to this board, send e-mail to <sjhill@cotw.com>.
308
c53c9cf6
AV
309config ARCH_KS8695
310 bool "Micrel/Kendin KS8695"
311 help
312 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
313 System-on-Chip devices.
314
9918cda5
UKK
315config ARCH_NS9XXX
316 bool "NetSilicon NS9xxx"
317 help
318 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
319 System.
320
321 <http://www.digi.com/products/microprocessors/index.jsp>
322
4af6fee1
DS
323config ARCH_PNX4008
324 bool "Philips Nexperia PNX4008 Mobile"
325 help
326 This enables support for Philips PNX4008 mobile platform.
327
1da177e4
LT
328config ARCH_PXA
329 bool "PXA2xx-based"
a4f7e763 330 depends on MMU
034d2f5a 331 select ARCH_MTD_XIP
0a938b97 332 select GENERIC_GPIO
45cf5eef 333 select GENERIC_TIME
f999b8bd
MM
334 help
335 Support for Intel's PXA2XX processor line.
1da177e4
LT
336
337config ARCH_RPC
338 bool "RiscPC"
339 select ARCH_ACORN
340 select FIQ
341 select TIMER_ACORN
a08b6b79 342 select ARCH_MAY_HAVE_PC_FDC
065909b9 343 select ISA_DMA_API
5ea81769 344 select NO_IOPORT
1da177e4
LT
345 help
346 On the Acorn Risc-PC, Linux can support the internal IDE disk and
347 CD-ROM interface, serial and parallel port, and the floppy drive.
348
349config ARCH_SA1100
350 bool "SA1100-based"
f7e68bbf 351 select ISA
3cd9e19e 352 select ARCH_DISCONTIGMEM_ENABLE
034d2f5a 353 select ARCH_MTD_XIP
0a938b97 354 select GENERIC_GPIO
f999b8bd
MM
355 help
356 Support for StrongARM 11x0 based boards.
1da177e4
LT
357
358config ARCH_S3C2410
e4d06e39 359 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
0a938b97 360 select GENERIC_GPIO
1da177e4
LT
361 help
362 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
363 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
f6c8965a 364 the Samsung SMDK2410 development board (and derivatives).
1da177e4
LT
365
366config ARCH_SHARK
367 bool "Shark"
f7e68bbf
RK
368 select ISA
369 select ISA_DMA
370 select PCI
f999b8bd
MM
371 help
372 Support for the StrongARM based Digital DNARD machine, also known
373 as "Shark" (<http://www.shark-linux.de/shark.html>).
1da177e4
LT
374
375config ARCH_LH7A40X
376 bool "Sharp LH7A40X"
377 help
378 Say Y here for systems based on one of the Sharp LH7A40X
379 System on a Chip processors. These CPUs include an ARM922T
380 core with a wide array of integrated devices for
381 hand-held and low-power applications.
382
7c6337e2
KH
383config ARCH_DAVINCI
384 bool "TI DaVinci"
385 select GENERIC_TIME
386 select GENERIC_CLOCKEVENTS
387 help
388 Support for TI's DaVinci platform.
389
3b938be6
RK
390config ARCH_OMAP
391 bool "TI OMAP"
392 select GENERIC_GPIO
393 select GENERIC_TIME
394 help
395 Support for TI's OMAP platform (OMAP1 and OMAP2).
396
1da177e4
LT
397endchoice
398
399source "arch/arm/mach-clps711x/Kconfig"
400
e7736d47
LB
401source "arch/arm/mach-ep93xx/Kconfig"
402
1da177e4
LT
403source "arch/arm/mach-footbridge/Kconfig"
404
405source "arch/arm/mach-integrator/Kconfig"
406
3f7e5815
LB
407source "arch/arm/mach-iop32x/Kconfig"
408
409source "arch/arm/mach-iop33x/Kconfig"
1da177e4 410
285f5fa7
DW
411source "arch/arm/mach-iop13xx/Kconfig"
412
1da177e4
LT
413source "arch/arm/mach-ixp4xx/Kconfig"
414
415source "arch/arm/mach-ixp2000/Kconfig"
416
c4713074
LB
417source "arch/arm/mach-ixp23xx/Kconfig"
418
1da177e4
LT
419source "arch/arm/mach-pxa/Kconfig"
420
421source "arch/arm/mach-sa1100/Kconfig"
422
d48af15e
TL
423source "arch/arm/plat-omap/Kconfig"
424
425source "arch/arm/mach-omap1/Kconfig"
1da177e4 426
1dbae815
TL
427source "arch/arm/mach-omap2/Kconfig"
428
a21765a7
BD
429source "arch/arm/plat-s3c24xx/Kconfig"
430
431if ARCH_S3C2410
432source "arch/arm/mach-s3c2400/Kconfig"
1da177e4 433source "arch/arm/mach-s3c2410/Kconfig"
a21765a7
BD
434source "arch/arm/mach-s3c2412/Kconfig"
435source "arch/arm/mach-s3c2440/Kconfig"
436source "arch/arm/mach-s3c2442/Kconfig"
e4d06e39 437source "arch/arm/mach-s3c2443/Kconfig"
a21765a7 438endif
1da177e4
LT
439
440source "arch/arm/mach-lh7a40x/Kconfig"
441
442source "arch/arm/mach-imx/Kconfig"
443
444source "arch/arm/mach-h720x/Kconfig"
445
446source "arch/arm/mach-versatile/Kconfig"
447
038c5b60
BN
448source "arch/arm/mach-aaec2000/Kconfig"
449
8ad68bbf
CM
450source "arch/arm/mach-realview/Kconfig"
451
9d041268 452source "arch/arm/mach-at91/Kconfig"
73a59c1c 453
bb6d8c88
SH
454source "arch/arm/mach-netx/Kconfig"
455
9918cda5
UKK
456source "arch/arm/mach-ns9xxx/Kconfig"
457
7c6337e2
KH
458source "arch/arm/mach-davinci/Kconfig"
459
c53c9cf6
AV
460source "arch/arm/mach-ks8695/Kconfig"
461
1da177e4
LT
462# Definitions to make life easier
463config ARCH_ACORN
464 bool
465
7ae1f7ec
LB
466config PLAT_IOP
467 bool
468
1da177e4
LT
469source arch/arm/mm/Kconfig
470
afe4b25e
LB
471config IWMMXT
472 bool "Enable iWMMXt support"
6340aa61 473 depends on CPU_XSCALE || CPU_XSC3
afe4b25e
LB
474 default y if PXA27x
475 help
476 Enable support for iWMMXt context switching at run time if
477 running on a CPU that supports it.
478
1da177e4
LT
479# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
480config XSCALE_PMU
481 bool
482 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
483 default y
484
3b93e7b0
HC
485if !MMU
486source "arch/arm/Kconfig-nommu"
487endif
488
1da177e4
LT
489endmenu
490
491source "arch/arm/common/Kconfig"
492
493config FORCE_MAX_ZONEORDER
494 int
495 depends on SA1111
496 default "9"
497
498menu "Bus support"
499
500config ARM_AMBA
501 bool
502
503config ISA
504 bool
1da177e4
LT
505 help
506 Find out whether you have ISA slots on your motherboard. ISA is the
507 name of a bus system, i.e. the way the CPU talks to the other stuff
508 inside your box. Other bus systems are PCI, EISA, MicroChannel
509 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
510 newer boards don't support it. If you have ISA, say Y, otherwise N.
511
065909b9 512# Select ISA DMA controller support
1da177e4
LT
513config ISA_DMA
514 bool
065909b9 515 select ISA_DMA_API
1da177e4 516
065909b9 517# Select ISA DMA interface
5cae841b
AV
518config ISA_DMA_API
519 bool
5cae841b 520
1da177e4 521config PCI
c53c9cf6 522 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695
1da177e4
LT
523 help
524 Find out whether you have a PCI motherboard. PCI is the name of a
525 bus system, i.e. the way the CPU talks to the other stuff inside
526 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
527 VESA. If you have PCI, say Y, otherwise N.
528
529 The PCI-HOWTO, available from
530 <http://www.tldp.org/docs.html#howto>, contains valuable
531 information about which PCI hardware does work under Linux and which
532 doesn't.
533
534# Select the host bridge type
535config PCI_HOST_VIA82C505
536 bool
537 depends on PCI && ARCH_SHARK
538 default y
539
540source "drivers/pci/Kconfig"
541
542source "drivers/pcmcia/Kconfig"
543
544endmenu
545
546menu "Kernel Features"
547
0567a0c0
KH
548source "kernel/time/Kconfig"
549
1da177e4
LT
550config SMP
551 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
f6db449c 552 depends on EXPERIMENTAL && REALVIEW_MPCORE
1da177e4
LT
553 help
554 This enables support for systems with more than one CPU. If you have
555 a system with only one CPU, like most personal computers, say N. If
556 you have a system with more than one CPU, say Y.
557
558 If you say N here, the kernel will run on single and multiprocessor
559 machines, but will use only one CPU of a multiprocessor machine. If
560 you say Y here, the kernel will run on many, but not all, single
561 processor machines. On a single processor machine, the kernel will
562 run faster if you say N here.
563
12c62c2e
AO
564 See also the <file:Documentation/smp.txt>,
565 <file:Documentation/i386/IO-APIC.txt>,
1da177e4
LT
566 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
567 <http://www.linuxdoc.org/docs.html#howto>.
568
569 If you don't know what to do here, say N.
570
571config NR_CPUS
572 int "Maximum number of CPUs (2-32)"
573 range 2 32
574 depends on SMP
575 default "4"
576
a054a811
RK
577config HOTPLUG_CPU
578 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
579 depends on SMP && HOTPLUG && EXPERIMENTAL
580 help
581 Say Y here to experiment with turning CPUs off and on. CPUs
582 can be controlled through /sys/devices/system/cpu.
583
37ee16ae
RK
584config LOCAL_TIMERS
585 bool "Use local timer interrupts"
2a98beb6 586 depends on SMP && REALVIEW_MPCORE
37ee16ae
RK
587 default y
588 help
589 Enable support for local timers on SMP platforms, rather then the
590 legacy IPI broadcast method. Local timers allows the system
591 accounting to be spread across the timer interval, preventing a
592 "thundering herd" at every timer tick.
593
1da177e4
LT
594config PREEMPT
595 bool "Preemptible Kernel (EXPERIMENTAL)"
596 depends on EXPERIMENTAL
597 help
598 This option reduces the latency of the kernel when reacting to
599 real-time or interactive events by allowing a low priority process to
600 be preempted even if it is in kernel mode executing a system call.
601 This allows applications to run more reliably even when the system is
602 under load.
603
604 Say Y here if you are building a kernel for a desktop, embedded
605 or real-time system. Say N if you are unsure.
606
8749af68
RK
607config NO_IDLE_HZ
608 bool "Dynamic tick timer"
0567a0c0 609 depends on !GENERIC_CLOCKEVENTS
8749af68
RK
610 help
611 Select this option if you want to disable continuous timer ticks
612 and have them programmed to occur as required. This option saves
613 power as the system can remain in idle state for longer.
614
615 By default dynamic tick is disabled during the boot, and can be
616 manually enabled with:
617
618 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
619
620 Alternatively, if you want dynamic tick automatically enabled
621 during boot, pass "dyntick=enable" via the kernel command string.
622
f2be64b3
TL
623 Please note that dynamic tick may affect the accuracy of
624 timekeeping on some platforms depending on the implementation.
569d2c34
NP
625 Currently at least OMAP, PXA2xx and SA11x0 platforms are known
626 to have accurate timekeeping with dynamic tick.
f2be64b3 627
f8065813
RK
628config HZ
629 int
630 default 128 if ARCH_L7200
631 default 200 if ARCH_EBSA110 || ARCH_S3C2410
bfe65704 632 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
f8065813
RK
633 default 100
634
704bdda0
NP
635config AEABI
636 bool "Use the ARM EABI to compile the kernel"
637 help
638 This option allows for the kernel to be compiled using the latest
639 ARM ABI (aka EABI). This is only useful if you are using a user
640 space environment that is also compiled with EABI.
641
642 Since there are major incompatibilities between the legacy ABI and
643 EABI, especially with regard to structure member alignment, this
644 option also changes the kernel syscall calling convention to
645 disambiguate both ABIs and allow for backward compatibility support
646 (selected with CONFIG_OABI_COMPAT).
647
648 To use this you need GCC version 4.0.0 or later.
649
6c90c872 650config OABI_COMPAT
a73a3ff1 651 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
61c484d4 652 depends on AEABI && EXPERIMENTAL
6c90c872
NP
653 default y
654 help
655 This option preserves the old syscall interface along with the
656 new (ARM EABI) one. It also provides a compatibility layer to
657 intercept syscalls that have structure arguments which layout
658 in memory differs between the legacy ABI and the new ARM EABI
659 (only for non "thumb" binaries). This option adds a tiny
660 overhead to all syscalls and produces a slightly larger kernel.
661 If you know you'll be using only pure EABI user space then you
662 can say N here. If this option is not selected and you attempt
663 to execute a legacy ABI binary then the result will be
664 UNPREDICTABLE (in fact it can be predicted that it won't work
665 at all). If in doubt say Y.
666
3f22ab27 667config ARCH_DISCONTIGMEM_ENABLE
1da177e4 668 bool
f7e68bbf 669 default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM)
1da177e4
LT
670 help
671 Say Y to support efficient handling of discontiguous physical memory,
672 for architectures which are either NUMA (Non-Uniform Memory Access)
673 or have huge holes in the physical address space for other reasons.
674 See <file:Documentation/vm/numa> for more.
675
c80d79d7
YG
676config NODES_SHIFT
677 int
678 default "4" if ARCH_LH7A40X
679 default "2"
680 depends on NEED_MULTIPLE_NODES
681
3f22ab27
DH
682source "mm/Kconfig"
683
1da177e4
LT
684config LEDS
685 bool "Timer and CPU usage LEDs"
686 depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
687 ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
688 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
689 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
73a59c1c 690 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
c53c9cf6
AV
691 ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \
692 ARCH_KS8695
1da177e4
LT
693 help
694 If you say Y here, the LEDs on your machine will be used
695 to provide useful information about your current system status.
696
697 If you are compiling a kernel for a NetWinder or EBSA-285, you will
698 be able to select which LEDs are active using the options below. If
699 you are compiling a kernel for the EBSA-110 or the LART however, the
700 red LED will simply flash regularly to indicate that the system is
701 still functional. It is safe to say Y here if you have a CATS
702 system, but the driver will do nothing.
703
704config LEDS_TIMER
705 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
706 MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
707 depends on LEDS
0567a0c0 708 depends on !GENERIC_CLOCKEVENTS
1da177e4
LT
709 default y if ARCH_EBSA110
710 help
711 If you say Y here, one of the system LEDs (the green one on the
712 NetWinder, the amber one on the EBSA285, or the red one on the LART)
713 will flash regularly to indicate that the system is still
714 operational. This is mainly useful to kernel hackers who are
715 debugging unstable kernels.
716
717 The LART uses the same LED for both Timer LED and CPU usage LED
718 functions. You may choose to use both, but the Timer LED function
719 will overrule the CPU usage LED.
720
721config LEDS_CPU
722 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
723 !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2
724 depends on LEDS
725 help
726 If you say Y here, the red LED will be used to give a good real
727 time indication of CPU usage, by lighting whenever the idle task
728 is not currently executing.
729
730 The LART uses the same LED for both Timer LED and CPU usage LED
731 functions. You may choose to use both, but the Timer LED function
732 will overrule the CPU usage LED.
733
734config ALIGNMENT_TRAP
735 bool
f12d0d7c 736 depends on CPU_CP15_MMU
1da177e4
LT
737 default y if !ARCH_EBSA110
738 help
84eb8d06 739 ARM processors cannot fetch/store information which is not
1da177e4
LT
740 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
741 address divisible by 4. On 32-bit ARM processors, these non-aligned
742 fetch/store instructions will be emulated in software if you say
743 here, which has a severe performance impact. This is necessary for
744 correct operation of some network protocols. With an IP-only
745 configuration it is safe to say N, otherwise say Y.
746
747endmenu
748
749menu "Boot options"
750
751# Compressed boot loader in ROM. Yes, we really want to ask about
752# TEXT and BSS so we preserve their values in the config files.
753config ZBOOT_ROM_TEXT
754 hex "Compressed ROM boot loader base address"
755 default "0"
756 help
757 The physical address at which the ROM-able zImage is to be
758 placed in the target. Platforms which normally make use of
759 ROM-able zImage formats normally set this to a suitable
760 value in their defconfig file.
761
762 If ZBOOT_ROM is not enabled, this has no effect.
763
764config ZBOOT_ROM_BSS
765 hex "Compressed ROM boot loader BSS address"
766 default "0"
767 help
f8c440b2
DF
768 The base address of an area of read/write memory in the target
769 for the ROM-able zImage which must be available while the
770 decompressor is running. It must be large enough to hold the
771 entire decompressed kernel plus an additional 128 KiB.
772 Platforms which normally make use of ROM-able zImage formats
773 normally set this to a suitable value in their defconfig file.
1da177e4
LT
774
775 If ZBOOT_ROM is not enabled, this has no effect.
776
777config ZBOOT_ROM
778 bool "Compressed boot loader in ROM/flash"
779 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
780 help
781 Say Y here if you intend to execute your compressed kernel image
782 (zImage) directly from ROM or flash. If unsure, say N.
783
784config CMDLINE
785 string "Default kernel command string"
786 default ""
787 help
788 On some architectures (EBSA110 and CATS), there is currently no way
789 for the boot loader to pass arguments to the kernel. For these
790 architectures, you should supply some command-line options at build
791 time by entering them here. As a minimum, you should specify the
792 memory size and the root device (e.g., mem=64M root=/dev/nfs).
793
794config XIP_KERNEL
795 bool "Kernel Execute-In-Place from ROM"
796 depends on !ZBOOT_ROM
797 help
798 Execute-In-Place allows the kernel to run from non-volatile storage
799 directly addressable by the CPU, such as NOR flash. This saves RAM
800 space since the text section of the kernel is not loaded from flash
801 to RAM. Read-write sections, such as the data section and stack,
802 are still copied to RAM. The XIP kernel is not compressed since
803 it has to run directly from flash, so it will take more space to
804 store it. The flash address used to link the kernel object files,
805 and for storing it, is configuration dependent. Therefore, if you
806 say Y here, you must know the proper physical address where to
807 store the kernel image depending on your own flash memory usage.
808
809 Also note that the make target becomes "make xipImage" rather than
810 "make zImage" or "make Image". The final kernel binary to put in
811 ROM memory will be arch/arm/boot/xipImage.
812
813 If unsure, say N.
814
815config XIP_PHYS_ADDR
816 hex "XIP Kernel Physical Location"
817 depends on XIP_KERNEL
818 default "0x00080000"
819 help
820 This is the physical address in your flash memory the kernel will
821 be linked for and stored to. This address is dependent on your
822 own flash usage.
823
c587e4a6
RP
824config KEXEC
825 bool "Kexec system call (EXPERIMENTAL)"
826 depends on EXPERIMENTAL
827 help
828 kexec is a system call that implements the ability to shutdown your
829 current kernel, and to start another kernel. It is like a reboot
830 but it is indepedent of the system firmware. And like a reboot
831 you can start any kernel with it, not just Linux.
832
833 It is an ongoing process to be certain the hardware in a machine
834 is properly shutdown, so do not be surprised if this code does not
835 initially work for you. It may help to enable device hotplugging
836 support.
837
1da177e4
LT
838endmenu
839
3c8cd0cc 840if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
1da177e4
LT
841
842menu "CPU Frequency scaling"
843
844source "drivers/cpufreq/Kconfig"
845
846config CPU_FREQ_SA1100
847 bool
07c6d48f 848 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1da177e4
LT
849 default y
850
851config CPU_FREQ_SA1110
852 bool
853 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
854 default y
855
856config CPU_FREQ_INTEGRATOR
857 tristate "CPUfreq driver for ARM Integrator CPUs"
858 depends on ARCH_INTEGRATOR && CPU_FREQ
859 default y
860 help
861 This enables the CPUfreq driver for ARM Integrator CPUs.
862
863 For details, take a look at <file:Documentation/cpu-freq>.
864
865 If in doubt, say Y.
866
3c8cd0cc
PP
867config CPU_FREQ_IMX
868 tristate "CPUfreq driver for i.MX CPUs"
869 depends on ARCH_IMX && CPU_FREQ
870 default n
871 help
872 This enables the CPUfreq driver for i.MX CPUs.
873
874 If in doubt, say N.
875
1da177e4
LT
876endmenu
877
878endif
879
880menu "Floating point emulation"
881
882comment "At least one emulation must be selected"
883
884config FPE_NWFPE
885 bool "NWFPE math emulation"
8993a44c 886 depends on !AEABI || OABI_COMPAT
1da177e4
LT
887 ---help---
888 Say Y to include the NWFPE floating point emulator in the kernel.
889 This is necessary to run most binaries. Linux does not currently
890 support floating point hardware so you need to say Y here even if
891 your machine has an FPA or floating point co-processor podule.
892
893 You may say N here if you are going to load the Acorn FPEmulator
894 early in the bootup.
895
896config FPE_NWFPE_XP
897 bool "Support extended precision"
bedf142b 898 depends on FPE_NWFPE
1da177e4
LT
899 help
900 Say Y to include 80-bit support in the kernel floating-point
901 emulator. Otherwise, only 32 and 64-bit support is compiled in.
902 Note that gcc does not generate 80-bit operations by default,
903 so in most cases this option only enlarges the size of the
904 floating point emulator without any good reason.
905
906 You almost surely want to say N here.
907
908config FPE_FASTFPE
909 bool "FastFPE math emulation (EXPERIMENTAL)"
8993a44c 910 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1da177e4
LT
911 ---help---
912 Say Y here to include the FAST floating point emulator in the kernel.
913 This is an experimental much faster emulator which now also has full
914 precision for the mantissa. It does not support any exceptions.
915 It is very simple, and approximately 3-6 times faster than NWFPE.
916
917 It should be sufficient for most programs. It may be not suitable
918 for scientific calculations, but you have to check this for yourself.
919 If you do not feel you need a faster FP emulation you should better
920 choose NWFPE.
921
922config VFP
923 bool "VFP-format floating point maths"
924 depends on CPU_V6 || CPU_ARM926T
925 help
926 Say Y to include VFP support code in the kernel. This is needed
927 if your hardware includes a VFP unit.
928
929 Please see <file:Documentation/arm/VFP/release-notes.txt> for
930 release notes and additional status information.
931
932 Say N if your target does not have VFP hardware.
933
934endmenu
935
936menu "Userspace binary formats"
937
938source "fs/Kconfig.binfmt"
939
940config ARTHUR
941 tristate "RISC OS personality"
704bdda0 942 depends on !AEABI
1da177e4
LT
943 help
944 Say Y here to include the kernel code necessary if you want to run
945 Acorn RISC OS/Arthur binaries under Linux. This code is still very
946 experimental; if this sounds frightening, say N and sleep in peace.
947 You can also say M here to compile this support as a module (which
948 will be called arthur).
949
950endmenu
951
952menu "Power management options"
953
eceab4ac 954source "kernel/power/Kconfig"
1da177e4 955
1da177e4
LT
956endmenu
957
d5950b43
SR
958source "net/Kconfig"
959
1da177e4
LT
960menu "Device Drivers"
961
962source "drivers/base/Kconfig"
963
c35bf4a5
PM
964source "drivers/connector/Kconfig"
965
f12d0d7c 966if ALIGNMENT_TRAP || !CPU_CP15_MMU
1da177e4
LT
967source "drivers/mtd/Kconfig"
968endif
969
970source "drivers/parport/Kconfig"
971
972source "drivers/pnp/Kconfig"
973
974source "drivers/block/Kconfig"
975
976source "drivers/acorn/block/Kconfig"
977
3f7e5815 978if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \
bb011b8e 979 || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
c4713074
LB
980 || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
981 || ARCH_IXP23XX
1da177e4
LT
982source "drivers/ide/Kconfig"
983endif
984
985source "drivers/scsi/Kconfig"
986
eb370f0b
MM
987source "drivers/ata/Kconfig"
988
1da177e4
LT
989source "drivers/md/Kconfig"
990
991source "drivers/message/fusion/Kconfig"
992
993source "drivers/ieee1394/Kconfig"
994
995source "drivers/message/i2o/Kconfig"
996
d5950b43 997source "drivers/net/Kconfig"
1da177e4
LT
998
999source "drivers/isdn/Kconfig"
1000
1001# input before char - char/joystick depends on it. As does USB.
1002
1003source "drivers/input/Kconfig"
1004
1005source "drivers/char/Kconfig"
1006
1007source "drivers/i2c/Kconfig"
1008
8ae12a0d
DB
1009source "drivers/spi/Kconfig"
1010
04916c0e
AZ
1011source "drivers/w1/Kconfig"
1012
ad2f931d
JD
1013source "drivers/hwmon/Kconfig"
1014
1da177e4
LT
1015#source "drivers/l3/Kconfig"
1016
1017source "drivers/misc/Kconfig"
1018
a4e137ab
RK
1019source "drivers/mfd/Kconfig"
1020
c72a1d60
RP
1021source "drivers/leds/Kconfig"
1022
1da177e4
LT
1023source "drivers/media/Kconfig"
1024
1025source "drivers/video/Kconfig"
1026
1027source "sound/Kconfig"
1028
c2dade51
SH
1029source "drivers/hid/Kconfig"
1030
1da177e4
LT
1031source "drivers/usb/Kconfig"
1032
1033source "drivers/mmc/Kconfig"
1034
12b824fb
AZ
1035source "drivers/rtc/Kconfig"
1036
1da177e4
LT
1037endmenu
1038
1039source "fs/Kconfig"
1040
1041source "arch/arm/oprofile/Kconfig"
1042
1043source "arch/arm/Kconfig.debug"
1044
1045source "security/Kconfig"
1046
1047source "crypto/Kconfig"
1048
1049source "lib/Kconfig"