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Ke Dongeb337a32012-09-26 19:17:39 -07001#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6mainmenu "Linux Kernel Configuration"
7
8config ARM
9 bool
10 default y
11 select HAVE_AOUT
12 select HAVE_IDE
13 select RTC_LIB
14 select SYS_SUPPORTS_APM_EMULATION
15 select HAVE_OPROFILE
16 select HAVE_ARCH_KGDB
17 select HAVE_KPROBES if (!XIP_KERNEL)
18 select HAVE_KRETPROBES if (HAVE_KPROBES)
19 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
20 select HAVE_GENERIC_DMA_COHERENT
21 help
22 The ARM series is a line of low-power-consumption RISC chip designs
23 licensed by ARM Ltd and targeted at embedded applications and
24 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
25 manufactured, but legacy ARM-based PC hardware remains popular in
26 Europe. There is an ARM Linux project with a web page at
27 <http://www.arm.linux.org.uk/>.
28
29config HAVE_PWM
30 bool
31
32config SYS_SUPPORTS_APM_EMULATION
33 bool
34
35config GENERIC_GPIO
36 bool
37
38config GENERIC_TIME
39 bool
40
41config GENERIC_CLOCKEVENTS
42 bool
43
44config GENERIC_CLOCKEVENTS_BROADCAST
45 bool
46 depends on GENERIC_CLOCKEVENTS
47 default y if SMP && !LOCAL_TIMERS
48
49config HAVE_TCM
50 bool
51 select GENERIC_ALLOCATOR
52
53config NO_IOPORT
54 bool
55
56config EISA
57 bool
58 ---help---
59 The Extended Industry Standard Architecture (EISA) bus was
60 developed as an open alternative to the IBM MicroChannel bus.
61
62 The EISA bus provided some of the features of the IBM MicroChannel
63 bus while maintaining backward compatibility with cards made for
64 the older ISA bus. The EISA bus saw limited use between 1988 and
65 1995 when it was made obsolete by the PCI bus.
66
67 Say Y here if you are building a kernel for an EISA-based machine.
68
69 Otherwise, say N.
70
71config SBUS
72 bool
73
74config MCA
75 bool
76 help
77 MicroChannel Architecture is found in some IBM PS/2 machines and
78 laptops. It is a bus system similar to PCI or ISA. See
79 <file:Documentation/mca.txt> (and especially the web page given
80 there) before attempting to build an MCA bus kernel.
81
82config GENERIC_HARDIRQS
83 bool
84 default y
85
86config STACKTRACE_SUPPORT
87 bool
88 default y
89
90config HAVE_LATENCYTOP_SUPPORT
91 bool
92 depends on !SMP
93 default y
94
95config LOCKDEP_SUPPORT
96 bool
97 default y
98
99config TRACE_IRQFLAGS_SUPPORT
100 bool
101 default y
102
103config HARDIRQS_SW_RESEND
104 bool
105 default y
106
107config GENERIC_IRQ_PROBE
108 bool
109 default y
110
111config GENERIC_LOCKBREAK
112 bool
113 default y
114 depends on SMP && PREEMPT
115
116config RWSEM_GENERIC_SPINLOCK
117 bool
118 default y
119
120config RWSEM_XCHGADD_ALGORITHM
121 bool
122
123config ARCH_HAS_ILOG2_U32
124 bool
125
126config ARCH_HAS_ILOG2_U64
127 bool
128
129config ARCH_HAS_CPUFREQ
130 bool
131 help
132 Internal node to signify that the ARCH has CPUFREQ support
133 and that the relevant menu configurations are displayed for
134 it.
135
136config GENERIC_HWEIGHT
137 bool
138 default y
139
140config GENERIC_CALIBRATE_DELAY
141 bool
142 default y
143
144config ARCH_MAY_HAVE_PC_FDC
145 bool
146
147config ZONE_DMA
148 bool
149
150config GENERIC_ISA_DMA
151 bool
152
153config FIQ
154 bool
155
156config ARCH_MTD_XIP
157 bool
158
159config GENERIC_HARDIRQS_NO__DO_IRQ
160 def_bool y
161
162if OPROFILE
163
164config OPROFILE_ARMV6
165 def_bool y
166 depends on CPU_V6 && !SMP
167 select OPROFILE_ARM11_CORE
168
169config OPROFILE_MPCORE
170 def_bool y
171 depends on CPU_V6 && SMP
172 select OPROFILE_ARM11_CORE
173
174config OPROFILE_ARM11_CORE
175 bool
176
177config OPROFILE_ARMV7
178 def_bool y
179 depends on CPU_V7 && !SMP
180 bool
181
182endif
183
184config VECTORS_BASE
185 hex
186 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
187 default DRAM_BASE if REMAP_VECTORS_TO_RAM
188 default 0x00000000
189 help
190 The base address of exception vectors.
191
192source "init/Kconfig"
193
194source "kernel/Kconfig.freezer"
195
196menu "System Type"
197
198config MMU
199 bool "MMU-based Paged Memory Management Support"
200 default y
201 help
202 Select if you want MMU-based virtualised addressing space
203 support by paged memory management. If unsure, say 'Y'.
204
205choice
206 prompt "ARM system type"
207 default ARCH_VERSATILE
208
209config ARCH_AAEC2000
210 bool "Agilent AAEC-2000 based"
211 select CPU_ARM920T
212 select ARM_AMBA
213 select HAVE_CLK
214 help
215 This enables support for systems based on the Agilent AAEC-2000
216
217config ARCH_INTEGRATOR
218 bool "ARM Ltd. Integrator family"
219 select ARM_AMBA
220 select ARCH_HAS_CPUFREQ
221 select HAVE_CLK
222 select COMMON_CLKDEV
223 select ICST525
224 help
225 Support for ARM's Integrator platform.
226
Ke Dongd0456642012-09-26 19:22:56 -0700227config ARCH_FEROCEON_ORION
228 bool "Feroceon-Orion based"
229 select ARCH_FEROCEON
230 select PCI
231 select GENERIC_TIME
232 select GENERIC_CLOCKEVENTS
233
234config ARCH_FEROCEON_KW
235 bool "Feroceon-KW based"
236 select CPU_FEROCEON
237 select ARCH_FEROCEON
238 select ARCH_HAS_CPUFREQ
239 select PCI
240 select GENERIC_GPIO
241 select ARCH_REQUIRE_GPIOLIB
242 select GENERIC_TIME
243 select GENERIC_CLOCKEVENTS
244
245config ARCH_FEROCEON_KW2
246 bool "Feroceon-KW2 based"
247 select CPU_FEROCEON
248 select ARCH_FEROCEON
249 select ARCH_HAS_CPUFREQ
250 select PCI
251 select ARCH_SUPPORTS_MSI
252 select GENERIC_GPIO
253 select ARCH_REQUIRE_GPIOLIB
254 select GENERIC_TIME
255 select GENERIC_CLOCKEVENTS
256
257config ARCH_FEROCEON_MV78XX0
258 bool "Feroceon-MV78XX0 based"
259 select ARCH_FEROCEON
260 select PCI
261 select GENERIC_TIME
262 select GENERIC_CLOCKEVENTS
263
264
Ke Dongeb337a32012-09-26 19:17:39 -0700265config ARCH_REALVIEW
266 bool "ARM Ltd. RealView family"
267 select ARM_AMBA
268 select HAVE_CLK
269 select COMMON_CLKDEV
270 select ICST307
271 select GENERIC_TIME
272 select GENERIC_CLOCKEVENTS
273 select ARCH_WANT_OPTIONAL_GPIOLIB
274 help
275 This enables support for ARM Ltd RealView boards.
276
277config ARCH_VERSATILE
278 bool "ARM Ltd. Versatile family"
279 select ARM_AMBA
280 select ARM_VIC
281 select HAVE_CLK
282 select COMMON_CLKDEV
283 select ICST307
284 select GENERIC_TIME
285 select GENERIC_CLOCKEVENTS
286 select ARCH_WANT_OPTIONAL_GPIOLIB
287 help
288 This enables support for ARM Ltd Versatile board.
289
290config ARCH_AT91
291 bool "Atmel AT91"
292 select GENERIC_GPIO
293 select ARCH_REQUIRE_GPIOLIB
294 select HAVE_CLK
295 help
296 This enables support for systems based on the Atmel AT91RM9200,
297 AT91SAM9 and AT91CAP9 processors.
298
299config ARCH_CLPS711X
300 bool "Cirrus Logic CLPS711x/EP721x-based"
301 select CPU_ARM720T
302 help
303 Support for Cirrus Logic 711x/721x based boards.
304
305config ARCH_GEMINI
306 bool "Cortina Systems Gemini"
307 select CPU_FA526
308 select GENERIC_GPIO
309 select ARCH_REQUIRE_GPIOLIB
310 help
311 Support for the Cortina Systems Gemini family SoCs
312
313config ARCH_EBSA110
314 bool "EBSA-110"
315 select CPU_SA110
316 select ISA
317 select NO_IOPORT
318 help
319 This is an evaluation board for the StrongARM processor available
320 from Digital. It has limited hardware on-board, including an
321 Ethernet interface, two PCMCIA sockets, two serial ports and a
322 parallel port.
323
324config ARCH_EP93XX
325 bool "EP93xx-based"
326 select CPU_ARM920T
327 select ARM_AMBA
328 select ARM_VIC
329 select GENERIC_GPIO
330 select HAVE_CLK
331 select COMMON_CLKDEV
332 select ARCH_REQUIRE_GPIOLIB
333 select ARCH_HAS_HOLES_MEMORYMODEL
334 help
335 This enables support for the Cirrus EP93xx series of CPUs.
336
337config ARCH_FOOTBRIDGE
338 bool "FootBridge"
339 select CPU_SA110
340 select FOOTBRIDGE
341 help
342 Support for systems based on the DC21285 companion chip
343 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
344
345config ARCH_MXC
346 bool "Freescale MXC/iMX-based"
347 select GENERIC_TIME
348 select GENERIC_CLOCKEVENTS
349 select ARCH_MTD_XIP
350 select GENERIC_GPIO
351 select ARCH_REQUIRE_GPIOLIB
352 select HAVE_CLK
353 help
354 Support for Freescale MXC/iMX-based family of processors
355
356config ARCH_STMP3XXX
357 bool "Freescale STMP3xxx"
358 select CPU_ARM926T
359 select HAVE_CLK
360 select COMMON_CLKDEV
361 select ARCH_REQUIRE_GPIOLIB
362 select GENERIC_TIME
363 select GENERIC_CLOCKEVENTS
364 select GENERIC_GPIO
365 select USB_ARCH_HAS_EHCI
366 help
367 Support for systems based on the Freescale 3xxx CPUs.
368
369config ARCH_NETX
370 bool "Hilscher NetX based"
371 select CPU_ARM926T
372 select ARM_VIC
373 select GENERIC_CLOCKEVENTS
374 select GENERIC_TIME
375 help
376 This enables support for systems based on the Hilscher NetX Soc
377
378config ARCH_H720X
379 bool "Hynix HMS720x-based"
380 select CPU_ARM720T
381 select ISA_DMA_API
382 help
383 This enables support for systems based on the Hynix HMS720x
384
385config ARCH_NOMADIK
386 bool "STMicroelectronics Nomadik"
387 select ARM_AMBA
388 select ARM_VIC
389 select CPU_ARM926T
390 select HAVE_CLK
391 select COMMON_CLKDEV
392 select GENERIC_TIME
393 select GENERIC_CLOCKEVENTS
394 select GENERIC_GPIO
395 select ARCH_REQUIRE_GPIOLIB
396 help
397 Support for the Nomadik platform by ST-Ericsson
398
399config ARCH_IOP13XX
400 bool "IOP13xx-based"
401 depends on MMU
402 select CPU_XSC3
403 select PLAT_IOP
404 select PCI
405 select ARCH_SUPPORTS_MSI
406 select VMSPLIT_1G
407 help
408 Support for Intel's IOP13XX (XScale) family of processors.
409
410config ARCH_IOP32X
411 bool "IOP32x-based"
412 depends on MMU
413 select CPU_XSCALE
414 select PLAT_IOP
415 select PCI
416 select GENERIC_GPIO
417 select ARCH_REQUIRE_GPIOLIB
418 help
419 Support for Intel's 80219 and IOP32X (XScale) family of
420 processors.
421
422config ARCH_IOP33X
423 bool "IOP33x-based"
424 depends on MMU
425 select CPU_XSCALE
426 select PLAT_IOP
427 select PCI
428 select GENERIC_GPIO
429 select ARCH_REQUIRE_GPIOLIB
430 help
431 Support for Intel's IOP33X (XScale) family of processors.
432
433config ARCH_IXP23XX
434 bool "IXP23XX-based"
435 depends on MMU
436 select CPU_XSC3
437 select PCI
438 help
439 Support for Intel's IXP23xx (XScale) family of processors.
440
441config ARCH_IXP2000
442 bool "IXP2400/2800-based"
443 depends on MMU
444 select CPU_XSCALE
445 select PCI
446 help
447 Support for Intel's IXP2400/2800 (XScale) family of processors.
448
449config ARCH_IXP4XX
450 bool "IXP4xx-based"
451 depends on MMU
452 select CPU_XSCALE
453 select GENERIC_GPIO
454 select GENERIC_TIME
455 select GENERIC_CLOCKEVENTS
456 select DMABOUNCE if PCI
457 help
458 Support for Intel's IXP4XX (XScale) family of processors.
459
460config ARCH_L7200
461 bool "LinkUp-L7200"
462 select CPU_ARM720T
463 select FIQ
464 help
465 Say Y here if you intend to run this kernel on a LinkUp Systems
466 L7200 Software Development Board which uses an ARM720T processor.
467 Information on this board can be obtained at:
468
469 <http://www.linkupsys.com/>
470
471 If you have any questions or comments about the Linux kernel port
472 to this board, send e-mail to <sjhill@cotw.com>.
473
474config ARCH_KIRKWOOD
475 bool "Marvell Kirkwood"
476 select CPU_FEROCEON
477 select PCI
478 select GENERIC_GPIO
479 select ARCH_REQUIRE_GPIOLIB
480 select GENERIC_TIME
481 select GENERIC_CLOCKEVENTS
482 select PLAT_ORION
483 help
484 Support for the following Marvell Kirkwood series SoCs:
485 88F6180, 88F6192 and 88F6281.
486
487config ARCH_LOKI
488 bool "Marvell Loki (88RC8480)"
489 select CPU_FEROCEON
490 select GENERIC_TIME
491 select GENERIC_CLOCKEVENTS
492 select PLAT_ORION
493 help
494 Support for the Marvell Loki (88RC8480) SoC.
495
496config ARCH_MV78XX0
497 bool "Marvell MV78xx0"
498 select CPU_FEROCEON
499 select PCI
500 select GENERIC_GPIO
501 select ARCH_REQUIRE_GPIOLIB
502 select GENERIC_TIME
503 select GENERIC_CLOCKEVENTS
504 select PLAT_ORION
505 help
506 Support for the following Marvell MV78xx0 series SoCs:
507 MV781x0, MV782x0.
508
509config ARCH_ORION5X
510 bool "Marvell Orion"
511 depends on MMU
512 select CPU_FEROCEON
513 select PCI
514 select GENERIC_GPIO
515 select ARCH_REQUIRE_GPIOLIB
516 select GENERIC_TIME
517 select GENERIC_CLOCKEVENTS
518 select PLAT_ORION
519 help
520 Support for the following Marvell Orion 5x series SoCs:
521 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
522 Orion-2 (5281), Orion-1-90 (6183).
523
524config ARCH_MMP
525 bool "Marvell PXA168/910"
526 depends on MMU
527 select GENERIC_GPIO
528 select ARCH_REQUIRE_GPIOLIB
529 select HAVE_CLK
530 select COMMON_CLKDEV
531 select GENERIC_TIME
532 select GENERIC_CLOCKEVENTS
533 select TICK_ONESHOT
534 select PLAT_PXA
535 help
536 Support for Marvell's PXA168/910 processor line.
537
538config ARCH_KS8695
539 bool "Micrel/Kendin KS8695"
540 select CPU_ARM922T
541 select GENERIC_GPIO
542 select ARCH_REQUIRE_GPIOLIB
543 help
544 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
545 System-on-Chip devices.
546
547config ARCH_NS9XXX
548 bool "NetSilicon NS9xxx"
549 select CPU_ARM926T
550 select GENERIC_GPIO
551 select GENERIC_TIME
552 select GENERIC_CLOCKEVENTS
553 select HAVE_CLK
554 help
555 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
556 System.
557
558 <http://www.digi.com/products/microprocessors/index.jsp>
559
560config ARCH_W90X900
561 bool "Nuvoton W90X900 CPU"
562 select CPU_ARM926T
563 select ARCH_REQUIRE_GPIOLIB
564 select GENERIC_GPIO
565 select HAVE_CLK
566 select COMMON_CLKDEV
567 select GENERIC_TIME
568 select GENERIC_CLOCKEVENTS
569 help
570 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
571 At present, the w90x900 has been renamed nuc900, regarding
572 the ARM series product line, you can login the following
573 link address to know more.
574
575 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
576 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
577
578config ARCH_PNX4008
579 bool "Philips Nexperia PNX4008 Mobile"
580 select CPU_ARM926T
581 select HAVE_CLK
582 help
583 This enables support for Philips PNX4008 mobile platform.
584
585config ARCH_PXA
586 bool "PXA2xx/PXA3xx-based"
587 depends on MMU
588 select ARCH_MTD_XIP
589 select ARCH_HAS_CPUFREQ
590 select GENERIC_GPIO
591 select HAVE_CLK
592 select COMMON_CLKDEV
593 select ARCH_REQUIRE_GPIOLIB
594 select GENERIC_TIME
595 select GENERIC_CLOCKEVENTS
596 select TICK_ONESHOT
597 select PLAT_PXA
598 help
599 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
600
601config ARCH_MSM
602 bool "Qualcomm MSM"
603 select CPU_V6
604 select GENERIC_TIME
605 select GENERIC_CLOCKEVENTS
606 help
607 Support for Qualcomm MSM7K based systems. This runs on the ARM11
608 apps processor of the MSM7K and depends on a shared memory
609 interface to the ARM9 modem processor which runs the baseband stack
610 and controls some vital subsystems (clock and power control, etc).
611
612config ARCH_RPC
613 bool "RiscPC"
614 select ARCH_ACORN
615 select FIQ
616 select TIMER_ACORN
617 select ARCH_MAY_HAVE_PC_FDC
618 select HAVE_PATA_PLATFORM
619 select ISA_DMA_API
620 select NO_IOPORT
621 select ARCH_SPARSEMEM_ENABLE
622 help
623 On the Acorn Risc-PC, Linux can support the internal IDE disk and
624 CD-ROM interface, serial and parallel port, and the floppy drive.
625
626config ARCH_SA1100
627 bool "SA1100-based"
628 select CPU_SA1100
629 select ISA
630 select ARCH_SPARSEMEM_ENABLE
631 select ARCH_MTD_XIP
632 select ARCH_HAS_CPUFREQ
633 select GENERIC_GPIO
634 select GENERIC_TIME
635 select GENERIC_CLOCKEVENTS
636 select HAVE_CLK
637 select TICK_ONESHOT
638 select ARCH_REQUIRE_GPIOLIB
639 help
640 Support for StrongARM 11x0 based boards.
641
642config ARCH_S3C2410
643 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
644 select GENERIC_GPIO
645 select ARCH_HAS_CPUFREQ
646 select HAVE_CLK
647 help
648 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
649 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
650 the Samsung SMDK2410 development board (and derivatives).
651
652config ARCH_S3C64XX
653 bool "Samsung S3C64XX"
654 select GENERIC_GPIO
655 select HAVE_CLK
656 select ARCH_HAS_CPUFREQ
657 help
658 Samsung S3C64XX series based systems
659
660config ARCH_S5PC1XX
661 bool "Samsung S5PC1XX"
662 select GENERIC_GPIO
663 select HAVE_CLK
664 select CPU_V7
665 help
666 Samsung S5PC1XX series based systems
667
668config ARCH_SHARK
669 bool "Shark"
670 select CPU_SA110
671 select ISA
672 select ISA_DMA
673 select ZONE_DMA
674 select PCI
675 help
676 Support for the StrongARM based Digital DNARD machine, also known
677 as "Shark" (<http://www.shark-linux.de/shark.html>).
678
679config ARCH_LH7A40X
680 bool "Sharp LH7A40X"
681 select CPU_ARM922T
682 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
683 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
684 help
685 Say Y here for systems based on one of the Sharp LH7A40X
686 System on a Chip processors. These CPUs include an ARM922T
687 core with a wide array of integrated devices for
688 hand-held and low-power applications.
689
690config ARCH_U300
691 bool "ST-Ericsson U300 Series"
692 depends on MMU
693 select CPU_ARM926T
694 select HAVE_TCM
695 select ARM_AMBA
696 select ARM_VIC
697 select GENERIC_TIME
698 select GENERIC_CLOCKEVENTS
699 select HAVE_CLK
700 select COMMON_CLKDEV
701 select GENERIC_GPIO
702 help
703 Support for ST-Ericsson U300 series mobile platforms.
704
705config ARCH_DAVINCI
706 bool "TI DaVinci"
707 select CPU_ARM926T
708 select GENERIC_TIME
709 select GENERIC_CLOCKEVENTS
710 select GENERIC_GPIO
711 select ARCH_REQUIRE_GPIOLIB
712 select HAVE_CLK
713 select ZONE_DMA
714 select HAVE_IDE
715 select COMMON_CLKDEV
716 select GENERIC_ALLOCATOR
717 help
718 Support for TI's DaVinci platform.
719
720config ARCH_OMAP
721 bool "TI OMAP"
722 select GENERIC_GPIO
723 select HAVE_CLK
724 select ARCH_REQUIRE_GPIOLIB
725 select ARCH_HAS_CPUFREQ
726 select GENERIC_TIME
727 select GENERIC_CLOCKEVENTS
728 help
729 Support for TI's OMAP platform (OMAP1 and OMAP2).
730
731config ARCH_BCMRING
732 bool "Broadcom BCMRING"
733 depends on MMU
734 select CPU_V6
735 select ARM_AMBA
736 select COMMON_CLKDEV
737 select GENERIC_TIME
738 select GENERIC_CLOCKEVENTS
739 select ARCH_WANT_OPTIONAL_GPIOLIB
740 help
741 Support for Broadcom's BCMRing platform.
742
743endchoice
744
Ke Dongd0456642012-09-26 19:22:56 -0700745if ARCH_FEROCEON
746source "arch/arm/plat-feroceon/Kconfig"
747endif
748
Ke Dongeb337a32012-09-26 19:17:39 -0700749source "arch/arm/mach-clps711x/Kconfig"
750
751source "arch/arm/mach-ep93xx/Kconfig"
752
753source "arch/arm/mach-footbridge/Kconfig"
754
755source "arch/arm/mach-gemini/Kconfig"
756
757source "arch/arm/mach-integrator/Kconfig"
758
759source "arch/arm/mach-iop32x/Kconfig"
760
761source "arch/arm/mach-iop33x/Kconfig"
762
763source "arch/arm/mach-iop13xx/Kconfig"
764
765source "arch/arm/mach-ixp4xx/Kconfig"
766
767source "arch/arm/mach-ixp2000/Kconfig"
768
769source "arch/arm/mach-ixp23xx/Kconfig"
770
771source "arch/arm/mach-loki/Kconfig"
772
773source "arch/arm/mach-mv78xx0/Kconfig"
774
775source "arch/arm/mach-pxa/Kconfig"
776source "arch/arm/plat-pxa/Kconfig"
777
778source "arch/arm/mach-mmp/Kconfig"
779
780source "arch/arm/mach-sa1100/Kconfig"
781
782source "arch/arm/plat-omap/Kconfig"
783
784source "arch/arm/mach-omap1/Kconfig"
785
786source "arch/arm/mach-omap2/Kconfig"
787
788source "arch/arm/mach-orion5x/Kconfig"
789
790source "arch/arm/mach-kirkwood/Kconfig"
791
792source "arch/arm/plat-s3c24xx/Kconfig"
793source "arch/arm/plat-s3c64xx/Kconfig"
794source "arch/arm/plat-s3c/Kconfig"
795source "arch/arm/plat-s5pc1xx/Kconfig"
796
797if ARCH_S3C2410
798source "arch/arm/mach-s3c2400/Kconfig"
799source "arch/arm/mach-s3c2410/Kconfig"
800source "arch/arm/mach-s3c2412/Kconfig"
801source "arch/arm/mach-s3c2440/Kconfig"
802source "arch/arm/mach-s3c2442/Kconfig"
803source "arch/arm/mach-s3c2443/Kconfig"
804endif
805
806if ARCH_S3C64XX
807source "arch/arm/mach-s3c6400/Kconfig"
808source "arch/arm/mach-s3c6410/Kconfig"
809endif
810
811source "arch/arm/plat-stmp3xxx/Kconfig"
812
813if ARCH_S5PC1XX
814source "arch/arm/mach-s5pc100/Kconfig"
815endif
816
817source "arch/arm/mach-lh7a40x/Kconfig"
818
819source "arch/arm/mach-h720x/Kconfig"
820
821source "arch/arm/mach-versatile/Kconfig"
822
823source "arch/arm/mach-aaec2000/Kconfig"
824
825source "arch/arm/mach-realview/Kconfig"
826
827source "arch/arm/mach-at91/Kconfig"
828
829source "arch/arm/plat-mxc/Kconfig"
830
831source "arch/arm/mach-nomadik/Kconfig"
832
833source "arch/arm/mach-netx/Kconfig"
834
835source "arch/arm/mach-ns9xxx/Kconfig"
836
837source "arch/arm/mach-davinci/Kconfig"
838
839source "arch/arm/mach-ks8695/Kconfig"
840
841source "arch/arm/mach-msm/Kconfig"
842
843source "arch/arm/mach-u300/Kconfig"
844
845source "arch/arm/mach-w90x900/Kconfig"
846
847source "arch/arm/mach-bcmring/Kconfig"
848
849# Definitions to make life easier
850config ARCH_ACORN
851 bool
852
853config PLAT_IOP
854 bool
855
856config PLAT_ORION
857 bool
858
Ke Dongd0456642012-09-26 19:22:56 -0700859config ARCH_FEROCEON
860 bool
861
Ke Dongeb337a32012-09-26 19:17:39 -0700862config PLAT_PXA
863 bool
864
865source arch/arm/mm/Kconfig
866
867config IWMMXT
868 bool "Enable iWMMXt support"
869 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
870 default y if PXA27x || PXA3xx || ARCH_MMP
871 help
872 Enable support for iWMMXt context switching at run time if
873 running on a CPU that supports it.
874
875# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
876config XSCALE_PMU
877 bool
878 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
879 default y
880
881if !MMU
882source "arch/arm/Kconfig-nommu"
883endif
884
885config ARM_ERRATA_411920
886 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
887 depends on CPU_V6 && !SMP
888 help
889 Invalidation of the Instruction Cache operation can
890 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
891 It does not affect the MPCore. This option enables the ARM Ltd.
892 recommended workaround.
893
894config ARM_ERRATA_430973
895 bool "ARM errata: Stale prediction on replaced interworking branch"
896 depends on CPU_V7
897 help
898 This option enables the workaround for the 430973 Cortex-A8
899 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
900 interworking branch is replaced with another code sequence at the
901 same virtual address, whether due to self-modifying code or virtual
902 to physical address re-mapping, Cortex-A8 does not recover from the
903 stale interworking branch prediction. This results in Cortex-A8
904 executing the new code sequence in the incorrect ARM or Thumb state.
905 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
906 and also flushes the branch target cache at every context switch.
907 Note that setting specific bits in the ACTLR register may not be
908 available in non-secure mode.
909
910config ARM_ERRATA_458693
911 bool "ARM errata: Processor deadlock when a false hazard is created"
912 depends on CPU_V7
913 help
914 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
915 erratum. For very specific sequences of memory operations, it is
916 possible for a hazard condition intended for a cache line to instead
917 be incorrectly associated with a different cache line. This false
918 hazard might then cause a processor deadlock. The workaround enables
919 the L1 caching of the NEON accesses and disables the PLD instruction
920 in the ACTLR register. Note that setting specific bits in the ACTLR
921 register may not be available in non-secure mode.
922
923config ARM_ERRATA_460075
924 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
925 depends on CPU_V7
926 help
927 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
928 erratum. Any asynchronous access to the L2 cache may encounter a
929 situation in which recent store transactions to the L2 cache are lost
930 and overwritten with stale memory contents from external memory. The
931 workaround disables the write-allocate mode for the L2 cache via the
932 ACTLR register. Note that setting specific bits in the ACTLR register
933 may not be available in non-secure mode.
934
935endmenu
936
937source "arch/arm/common/Kconfig"
938
939config FORCE_MAX_ZONEORDER
940 int
941 depends on SA1111
942 default "9"
943
944menu "Bus support"
945
946config ARM_AMBA
947 bool
948
949config ISA
950 bool
951 help
952 Find out whether you have ISA slots on your motherboard. ISA is the
953 name of a bus system, i.e. the way the CPU talks to the other stuff
954 inside your box. Other bus systems are PCI, EISA, MicroChannel
955 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
956 newer boards don't support it. If you have ISA, say Y, otherwise N.
957
958# Select ISA DMA controller support
959config ISA_DMA
960 bool
961 select ISA_DMA_API
962
963# Select ISA DMA interface
964config ISA_DMA_API
965 bool
966
967config PCI
Ke Dongd0456642012-09-26 19:22:56 -0700968 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_FEROCEON
Ke Dongeb337a32012-09-26 19:17:39 -0700969 help
970 Find out whether you have a PCI motherboard. PCI is the name of a
971 bus system, i.e. the way the CPU talks to the other stuff inside
972 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
973 VESA. If you have PCI, say Y, otherwise N.
974
975config PCI_SYSCALL
976 def_bool PCI
977
978# Select the host bridge type
979config PCI_HOST_VIA82C505
980 bool
981 depends on PCI && ARCH_SHARK
982 default y
983
984config PCI_HOST_ITE8152
985 bool
986 depends on PCI && MACH_ARMCORE
987 default y
988 select DMABOUNCE
989
990source "drivers/pci/Kconfig"
991
992source "drivers/pcmcia/Kconfig"
993
994endmenu
995
996menu "Kernel Features"
997
998source "kernel/time/Kconfig"
999
1000config SMP
1001 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1002 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1003 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
1004 depends on GENERIC_CLOCKEVENTS
1005 select USE_GENERIC_SMP_HELPERS
1006 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4)
1007 help
1008 This enables support for systems with more than one CPU. If you have
1009 a system with only one CPU, like most personal computers, say N. If
1010 you have a system with more than one CPU, say Y.
1011
1012 If you say N here, the kernel will run on single and multiprocessor
1013 machines, but will use only one CPU of a multiprocessor machine. If
1014 you say Y here, the kernel will run on many, but not all, single
1015 processor machines. On a single processor machine, the kernel will
1016 run faster if you say N here.
1017
1018 See also <file:Documentation/i386/IO-APIC.txt>,
1019 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1020 <http://www.linuxdoc.org/docs.html#howto>.
1021
1022 If you don't know what to do here, say N.
1023
1024config HAVE_ARM_SCU
1025 bool
1026 depends on SMP
1027 help
1028 This option enables support for the ARM system coherency unit
1029
1030config HAVE_ARM_TWD
1031 bool
1032 depends on SMP
1033 help
1034 This options enables support for the ARM timer and watchdog unit
1035
1036choice
1037 prompt "Memory split"
1038 default VMSPLIT_3G
1039 help
1040 Select the desired split between kernel and user memory.
1041
1042 If you are not absolutely sure what you are doing, leave this
1043 option alone!
1044
1045 config VMSPLIT_3G
1046 bool "3G/1G user/kernel split"
1047 config VMSPLIT_2G
1048 bool "2G/2G user/kernel split"
1049 config VMSPLIT_1G
1050 bool "1G/3G user/kernel split"
1051endchoice
1052
1053config PAGE_OFFSET
1054 hex
1055 default 0x40000000 if VMSPLIT_1G
1056 default 0x80000000 if VMSPLIT_2G
1057 default 0xC0000000
1058
1059config NR_CPUS
1060 int "Maximum number of CPUs (2-32)"
1061 range 2 32
1062 depends on SMP
1063 default "4"
1064
1065config HOTPLUG_CPU
1066 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1067 depends on SMP && HOTPLUG && EXPERIMENTAL
1068 help
1069 Say Y here to experiment with turning CPUs off and on. CPUs
1070 can be controlled through /sys/devices/system/cpu.
1071
1072config LOCAL_TIMERS
1073 bool "Use local timer interrupts"
1074 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1075 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4)
1076 default y
1077 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4)
1078 help
1079 Enable support for local timers on SMP platforms, rather then the
1080 legacy IPI broadcast method. Local timers allows the system
1081 accounting to be spread across the timer interval, preventing a
1082 "thundering herd" at every timer tick.
1083
1084source kernel/Kconfig.preempt
1085
1086config HZ
1087 int
1088 default 128 if ARCH_L7200
1089 default 200 if ARCH_EBSA110 || ARCH_S3C2410
1090 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1091 default AT91_TIMER_HZ if ARCH_AT91
1092 default 100
1093
1094config THUMB2_KERNEL
1095 bool "Compile the kernel in Thumb-2 mode"
1096 depends on CPU_V7 && EXPERIMENTAL
1097 select AEABI
1098 select ARM_ASM_UNIFIED
1099 help
1100 By enabling this option, the kernel will be compiled in
1101 Thumb-2 mode. A compiler/assembler that understand the unified
1102 ARM-Thumb syntax is needed.
1103
1104 If unsure, say N.
1105
1106config ARM_ASM_UNIFIED
1107 bool
1108
1109config AEABI
1110 bool "Use the ARM EABI to compile the kernel"
1111 help
1112 This option allows for the kernel to be compiled using the latest
1113 ARM ABI (aka EABI). This is only useful if you are using a user
1114 space environment that is also compiled with EABI.
1115
1116 Since there are major incompatibilities between the legacy ABI and
1117 EABI, especially with regard to structure member alignment, this
1118 option also changes the kernel syscall calling convention to
1119 disambiguate both ABIs and allow for backward compatibility support
1120 (selected with CONFIG_OABI_COMPAT).
1121
1122 To use this you need GCC version 4.0.0 or later.
1123
1124config OABI_COMPAT
1125 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1126 depends on AEABI && EXPERIMENTAL
1127 default y
1128 help
1129 This option preserves the old syscall interface along with the
1130 new (ARM EABI) one. It also provides a compatibility layer to
1131 intercept syscalls that have structure arguments which layout
1132 in memory differs between the legacy ABI and the new ARM EABI
1133 (only for non "thumb" binaries). This option adds a tiny
1134 overhead to all syscalls and produces a slightly larger kernel.
1135 If you know you'll be using only pure EABI user space then you
1136 can say N here. If this option is not selected and you attempt
1137 to execute a legacy ABI binary then the result will be
1138 UNPREDICTABLE (in fact it can be predicted that it won't work
1139 at all). If in doubt say Y.
1140
1141config ARCH_HAS_HOLES_MEMORYMODEL
1142 bool
Ke Dongd0456642012-09-26 19:22:56 -07001143 default n
1144config REORDER
1145 bool "Function reordering"
1146 default n
1147 help
1148 This option enables the toolchain to reorder functions for a more
1149 optimal TLB/Icache usage. If you have pretty much any version of binutils,
1150 this can increase your kernel build time by roughly one minute.
Ke Dongeb337a32012-09-26 19:17:39 -07001151
1152# Discontigmem is deprecated
1153config ARCH_DISCONTIGMEM_ENABLE
1154 bool
1155
1156config ARCH_SPARSEMEM_ENABLE
1157 bool
1158
1159config ARCH_SPARSEMEM_DEFAULT
1160 def_bool ARCH_SPARSEMEM_ENABLE
1161
1162config ARCH_SELECT_MEMORY_MODEL
1163 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1164
1165config NODES_SHIFT
1166 int
1167 default "4" if ARCH_LH7A40X
1168 default "2"
1169 depends on NEED_MULTIPLE_NODES
1170
1171config HIGHMEM
1172 bool "High Memory Support (EXPERIMENTAL)"
1173 depends on MMU && EXPERIMENTAL
1174 help
1175 The address space of ARM processors is only 4 Gigabytes large
1176 and it has to accommodate user address space, kernel address
1177 space as well as some memory mapped IO. That means that, if you
1178 have a large amount of physical memory and/or IO, not all of the
1179 memory can be "permanently mapped" by the kernel. The physical
1180 memory that is not permanently mapped is called "high memory".
1181
1182 Depending on the selected kernel/user memory split, minimum
1183 vmalloc space and actual amount of RAM, you may not need this
1184 option which should result in a slightly faster kernel.
1185
1186 If unsure, say n.
1187
1188config HIGHPTE
1189 bool "Allocate 2nd-level pagetables from highmem"
1190 depends on HIGHMEM
1191 depends on !OUTER_CACHE
1192
1193source "mm/Kconfig"
1194
1195config LEDS
1196 bool "Timer and CPU usage LEDs"
1197 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1198 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1199 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1200 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1201 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1202 ARCH_AT91 || ARCH_DAVINCI || \
Ke Dongd0456642012-09-26 19:22:56 -07001203 ARCH_KS8695 || MACH_RD88F5182 || ARCH_FEROCEON || \
1204 ARCH_REALVIEW
Ke Dongeb337a32012-09-26 19:17:39 -07001205 help
1206 If you say Y here, the LEDs on your machine will be used
1207 to provide useful information about your current system status.
1208
1209 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1210 be able to select which LEDs are active using the options below. If
1211 you are compiling a kernel for the EBSA-110 or the LART however, the
1212 red LED will simply flash regularly to indicate that the system is
1213 still functional. It is safe to say Y here if you have a CATS
1214 system, but the driver will do nothing.
1215
1216config LEDS_TIMER
1217 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1218 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1219 || MACH_OMAP_PERSEUS2
1220 depends on LEDS
1221 depends on !GENERIC_CLOCKEVENTS
1222 default y if ARCH_EBSA110
1223 help
1224 If you say Y here, one of the system LEDs (the green one on the
1225 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1226 will flash regularly to indicate that the system is still
1227 operational. This is mainly useful to kernel hackers who are
1228 debugging unstable kernels.
1229
1230 The LART uses the same LED for both Timer LED and CPU usage LED
1231 functions. You may choose to use both, but the Timer LED function
1232 will overrule the CPU usage LED.
1233
1234config LEDS_CPU
1235 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1236 !ARCH_OMAP) \
1237 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1238 || MACH_OMAP_PERSEUS2
1239 depends on LEDS
1240 help
1241 If you say Y here, the red LED will be used to give a good real
1242 time indication of CPU usage, by lighting whenever the idle task
1243 is not currently executing.
1244
1245 The LART uses the same LED for both Timer LED and CPU usage LED
1246 functions. You may choose to use both, but the Timer LED function
1247 will overrule the CPU usage LED.
1248
1249config ALIGNMENT_TRAP
1250 bool
1251 depends on CPU_CP15_MMU
1252 default y if !ARCH_EBSA110
1253 help
1254 ARM processors cannot fetch/store information which is not
1255 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1256 address divisible by 4. On 32-bit ARM processors, these non-aligned
1257 fetch/store instructions will be emulated in software if you say
1258 here, which has a severe performance impact. This is necessary for
1259 correct operation of some network protocols. With an IP-only
1260 configuration it is safe to say N, otherwise say Y.
1261
1262config UACCESS_WITH_MEMCPY
1263 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1264 depends on MMU && EXPERIMENTAL
1265 default y if CPU_FEROCEON
1266 help
1267 Implement faster copy_to_user and clear_user methods for CPU
1268 cores where a 8-word STM instruction give significantly higher
1269 memory write throughput than a sequence of individual 32bit stores.
1270
1271 A possible side effect is a slight increase in scheduling latency
1272 between threads sharing the same address space if they invoke
1273 such copy operations with large buffers.
1274
1275 However, if the CPU data cache is using a write-allocate mode,
1276 this option is unlikely to provide any performance gain.
1277
1278endmenu
1279
1280menu "Boot options"
1281
1282# Compressed boot loader in ROM. Yes, we really want to ask about
1283# TEXT and BSS so we preserve their values in the config files.
1284config ZBOOT_ROM_TEXT
1285 hex "Compressed ROM boot loader base address"
1286 default "0"
1287 help
1288 The physical address at which the ROM-able zImage is to be
1289 placed in the target. Platforms which normally make use of
1290 ROM-able zImage formats normally set this to a suitable
1291 value in their defconfig file.
1292
1293 If ZBOOT_ROM is not enabled, this has no effect.
1294
1295config ZBOOT_ROM_BSS
1296 hex "Compressed ROM boot loader BSS address"
1297 default "0"
1298 help
1299 The base address of an area of read/write memory in the target
1300 for the ROM-able zImage which must be available while the
1301 decompressor is running. It must be large enough to hold the
1302 entire decompressed kernel plus an additional 128 KiB.
1303 Platforms which normally make use of ROM-able zImage formats
1304 normally set this to a suitable value in their defconfig file.
1305
1306 If ZBOOT_ROM is not enabled, this has no effect.
1307
1308config ZBOOT_ROM
1309 bool "Compressed boot loader in ROM/flash"
1310 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1311 help
1312 Say Y here if you intend to execute your compressed kernel image
1313 (zImage) directly from ROM or flash. If unsure, say N.
1314
John Newlin86c18662013-06-18 13:53:09 -07001315config CMDLINE_BOOL
1316 bool "Built-in kernel command line"
1317 default n
1318
1319config CMDLINE_OVERRIDE
1320 bool "Built-in command line overrides firware arguments"
1321 default n
1322
Ke Dongeb337a32012-09-26 19:17:39 -07001323config CMDLINE
1324 string "Default kernel command string"
1325 default ""
1326 help
1327 On some architectures (EBSA110 and CATS), there is currently no way
1328 for the boot loader to pass arguments to the kernel. For these
1329 architectures, you should supply some command-line options at build
1330 time by entering them here. As a minimum, you should specify the
1331 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1332
1333config XIP_KERNEL
1334 bool "Kernel Execute-In-Place from ROM"
1335 depends on !ZBOOT_ROM
1336 help
1337 Execute-In-Place allows the kernel to run from non-volatile storage
1338 directly addressable by the CPU, such as NOR flash. This saves RAM
1339 space since the text section of the kernel is not loaded from flash
1340 to RAM. Read-write sections, such as the data section and stack,
1341 are still copied to RAM. The XIP kernel is not compressed since
1342 it has to run directly from flash, so it will take more space to
1343 store it. The flash address used to link the kernel object files,
1344 and for storing it, is configuration dependent. Therefore, if you
1345 say Y here, you must know the proper physical address where to
1346 store the kernel image depending on your own flash memory usage.
1347
1348 Also note that the make target becomes "make xipImage" rather than
1349 "make zImage" or "make Image". The final kernel binary to put in
1350 ROM memory will be arch/arm/boot/xipImage.
1351
1352 If unsure, say N.
1353
1354config XIP_PHYS_ADDR
1355 hex "XIP Kernel Physical Location"
1356 depends on XIP_KERNEL
1357 default "0x00080000"
1358 help
1359 This is the physical address in your flash memory the kernel will
1360 be linked for and stored to. This address is dependent on your
1361 own flash usage.
1362
1363config KEXEC
1364 bool "Kexec system call (EXPERIMENTAL)"
1365 depends on EXPERIMENTAL
1366 help
1367 kexec is a system call that implements the ability to shutdown your
1368 current kernel, and to start another kernel. It is like a reboot
1369 but it is independent of the system firmware. And like a reboot
1370 you can start any kernel with it, not just Linux.
1371
1372 It is an ongoing process to be certain the hardware in a machine
1373 is properly shutdown, so do not be surprised if this code does not
1374 initially work for you. It may help to enable device hotplugging
1375 support.
1376
1377config ATAGS_PROC
1378 bool "Export atags in procfs"
1379 depends on KEXEC
1380 default y
1381 help
1382 Should the atags used to boot the kernel be exported in an "atags"
1383 file in procfs. Useful with kexec.
1384
1385endmenu
1386
1387menu "CPU Power Management"
1388
1389if ARCH_HAS_CPUFREQ
1390
1391source "drivers/cpufreq/Kconfig"
1392
1393config CPU_FREQ_SA1100
1394 bool
1395 depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT)
1396 default y
1397
1398config CPU_FREQ_SA1110
1399 bool
1400 depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3)
1401 default y
1402
1403config CPU_FREQ_INTEGRATOR
1404 tristate "CPUfreq driver for ARM Integrator CPUs"
1405 depends on ARCH_INTEGRATOR && CPU_FREQ
1406 default y
1407 help
1408 This enables the CPUfreq driver for ARM Integrator CPUs.
1409
1410 For details, take a look at <file:Documentation/cpu-freq>.
1411
1412 If in doubt, say Y.
1413
1414config CPU_FREQ_PXA
1415 bool
1416 depends on CPU_FREQ && ARCH_PXA && PXA25x
1417 default y
1418 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1419
1420config CPU_FREQ_S3C64XX
1421 bool "CPUfreq support for Samsung S3C64XX CPUs"
1422 depends on CPU_FREQ && CPU_S3C6410
1423
Ke Dongd0456642012-09-26 19:22:56 -07001424config CPU_FREQ_FEROCEON_KW
1425 tristate "CPUfreq driver for Kirkwood SoC"
1426 depends on CPU_FREQ && ARCH_FEROCEON_KW
1427 default n
1428 help
1429 This enables the CPUfreq driver for Kirkwood SoC.
1430 If in doubt, say N.
1431
1432config CPU_FREQ_FEROCEON_KW2
1433 tristate "CPUfreq driver for Kirkwood2 SoC"
1434 depends on CPU_FREQ && ARCH_FEROCEON_KW2
1435 default n
1436 help
1437 This enables the CPUfreq driver for Kirkwood SoC.
1438 If in doubt, say N.
1439
Ke Dongeb337a32012-09-26 19:17:39 -07001440config CPU_FREQ_S3C
1441 bool
1442 help
1443 Internal configuration node for common cpufreq on Samsung SoC
1444
1445config CPU_FREQ_S3C24XX
1446 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1447 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1448 select CPU_FREQ_S3C
1449 help
1450 This enables the CPUfreq driver for the Samsung S3C24XX family
1451 of CPUs.
1452
1453 For details, take a look at <file:Documentation/cpu-freq>.
1454
1455 If in doubt, say N.
1456
1457config CPU_FREQ_S3C24XX_PLL
1458 bool "Support CPUfreq changing of PLL frequency"
1459 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1460 help
1461 Compile in support for changing the PLL frequency from the
1462 S3C24XX series CPUfreq driver. The PLL takes time to settle
1463 after a frequency change, so by default it is not enabled.
1464
1465 This also means that the PLL tables for the selected CPU(s) will
1466 be built which may increase the size of the kernel image.
1467
1468config CPU_FREQ_S3C24XX_DEBUG
1469 bool "Debug CPUfreq Samsung driver core"
1470 depends on CPU_FREQ_S3C24XX
1471 help
1472 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1473
1474config CPU_FREQ_S3C24XX_IODEBUG
1475 bool "Debug CPUfreq Samsung driver IO timing"
1476 depends on CPU_FREQ_S3C24XX
1477 help
1478 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1479
1480config CPU_FREQ_S3C24XX_DEBUGFS
1481 bool "Export debugfs for CPUFreq"
1482 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1483 help
1484 Export status information via debugfs.
1485
1486endif
1487
1488source "drivers/cpuidle/Kconfig"
1489
1490endmenu
1491
1492menu "Floating point emulation"
1493
1494comment "At least one emulation must be selected"
1495
1496config FPE_NWFPE
1497 bool "NWFPE math emulation"
1498 depends on !AEABI || OABI_COMPAT
1499 ---help---
1500 Say Y to include the NWFPE floating point emulator in the kernel.
1501 This is necessary to run most binaries. Linux does not currently
1502 support floating point hardware so you need to say Y here even if
1503 your machine has an FPA or floating point co-processor podule.
1504
1505 You may say N here if you are going to load the Acorn FPEmulator
1506 early in the bootup.
1507
1508config FPE_NWFPE_XP
1509 bool "Support extended precision"
1510 depends on FPE_NWFPE
1511 help
1512 Say Y to include 80-bit support in the kernel floating-point
1513 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1514 Note that gcc does not generate 80-bit operations by default,
1515 so in most cases this option only enlarges the size of the
1516 floating point emulator without any good reason.
1517
1518 You almost surely want to say N here.
1519
1520config FPE_FASTFPE
1521 bool "FastFPE math emulation (EXPERIMENTAL)"
1522 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1523 ---help---
1524 Say Y here to include the FAST floating point emulator in the kernel.
1525 This is an experimental much faster emulator which now also has full
1526 precision for the mantissa. It does not support any exceptions.
1527 It is very simple, and approximately 3-6 times faster than NWFPE.
1528
1529 It should be sufficient for most programs. It may be not suitable
1530 for scientific calculations, but you have to check this for yourself.
1531 If you do not feel you need a faster FP emulation you should better
1532 choose NWFPE.
1533
1534config VFP
1535 bool "VFP-format floating point maths"
1536 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1537 help
1538 Say Y to include VFP support code in the kernel. This is needed
1539 if your hardware includes a VFP unit.
1540
1541 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1542 release notes and additional status information.
1543
1544 Say N if your target does not have VFP hardware.
1545
Ke Dongd0456642012-09-26 19:22:56 -07001546config VFP_FASTVFP
1547 bool "FastVFP"
1548 depends on VFP
1549 help
1550 Say Y here to include the FAST Vector Floating Point in the kernel.
1551 This means the VFP co-processor runs in a determinable time without
1552 support code assistance, regardless of the characteristics of the input data.
1553 In RunFast mode, no user exception traps are available.
1554
1555 It should be sufficient for most programs. It may be not suitable
1556 for scientific calculations, but you have to check this for yourself.
1557
Ke Dongeb337a32012-09-26 19:17:39 -07001558config VFPv3
1559 bool
1560 depends on VFP
1561 default y if CPU_V7
1562
1563config NEON
1564 bool "Advanced SIMD (NEON) Extension support"
1565 depends on VFPv3 && CPU_V7
1566 help
1567 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1568 Extension.
1569
1570endmenu
1571
1572menu "Userspace binary formats"
1573
1574source "fs/Kconfig.binfmt"
1575
1576config ARTHUR
1577 tristate "RISC OS personality"
1578 depends on !AEABI
1579 help
1580 Say Y here to include the kernel code necessary if you want to run
1581 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1582 experimental; if this sounds frightening, say N and sleep in peace.
1583 You can also say M here to compile this support as a module (which
1584 will be called arthur).
1585
1586endmenu
1587
1588menu "Power management options"
1589
1590source "kernel/power/Kconfig"
1591
1592config ARCH_SUSPEND_POSSIBLE
1593 def_bool y
1594
1595endmenu
1596
1597source "net/Kconfig"
1598
1599source "drivers/Kconfig"
1600
1601source "fs/Kconfig"
1602
1603source "arch/arm/Kconfig.debug"
1604
1605source "security/Kconfig"
1606
1607source "crypto/Kconfig"
1608
1609source "lib/Kconfig"