ARM: S5P6442: Update Kconfig and Makefiles
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / Kconfig
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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
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 select HAVE_KERNEL_GZIP
22 select HAVE_KERNEL_LZO
23 help
24 The ARM series is a line of low-power-consumption RISC chip designs
25 licensed by ARM Ltd and targeted at embedded applications and
26 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
27 manufactured, but legacy ARM-based PC hardware remains popular in
28 Europe. There is an ARM Linux project with a web page at
29 <http://www.arm.linux.org.uk/>.
30
31config HAVE_PWM
32 bool
33
34config SYS_SUPPORTS_APM_EMULATION
35 bool
36
37config GENERIC_GPIO
38 bool
39
40config GENERIC_TIME
41 bool
42
43config GENERIC_CLOCKEVENTS
44 bool
45
46config GENERIC_CLOCKEVENTS_BROADCAST
47 bool
48 depends on GENERIC_CLOCKEVENTS
49 default y if SMP && !LOCAL_TIMERS
50
51config HAVE_TCM
52 bool
53 select GENERIC_ALLOCATOR
54
55config NO_IOPORT
56 bool
57
58config EISA
59 bool
60 ---help---
61 The Extended Industry Standard Architecture (EISA) bus was
62 developed as an open alternative to the IBM MicroChannel bus.
63
64 The EISA bus provided some of the features of the IBM MicroChannel
65 bus while maintaining backward compatibility with cards made for
66 the older ISA bus. The EISA bus saw limited use between 1988 and
67 1995 when it was made obsolete by the PCI bus.
68
69 Say Y here if you are building a kernel for an EISA-based machine.
70
71 Otherwise, say N.
72
73config SBUS
74 bool
75
76config MCA
77 bool
78 help
79 MicroChannel Architecture is found in some IBM PS/2 machines and
80 laptops. It is a bus system similar to PCI or ISA. See
81 <file:Documentation/mca.txt> (and especially the web page given
82 there) before attempting to build an MCA bus kernel.
83
84config GENERIC_HARDIRQS
85 bool
86 default y
87
88config STACKTRACE_SUPPORT
89 bool
90 default y
91
92config HAVE_LATENCYTOP_SUPPORT
93 bool
94 depends on !SMP
95 default y
96
97config LOCKDEP_SUPPORT
98 bool
99 default y
100
101config TRACE_IRQFLAGS_SUPPORT
102 bool
103 default y
104
105config HARDIRQS_SW_RESEND
106 bool
107 default y
108
109config GENERIC_IRQ_PROBE
110 bool
111 default y
112
113config GENERIC_LOCKBREAK
114 bool
115 default y
116 depends on SMP && PREEMPT
117
118config RWSEM_GENERIC_SPINLOCK
119 bool
120 default y
121
122config RWSEM_XCHGADD_ALGORITHM
123 bool
124
125config ARCH_HAS_ILOG2_U32
126 bool
127
128config ARCH_HAS_ILOG2_U64
129 bool
130
131config ARCH_HAS_CPUFREQ
132 bool
133 help
134 Internal node to signify that the ARCH has CPUFREQ support
135 and that the relevant menu configurations are displayed for
136 it.
137
138config GENERIC_HWEIGHT
139 bool
140 default y
141
142config GENERIC_CALIBRATE_DELAY
143 bool
144 default y
145
146config ARCH_MAY_HAVE_PC_FDC
147 bool
148
149config ZONE_DMA
150 bool
151
152config GENERIC_ISA_DMA
153 bool
154
155config FIQ
156 bool
157
158config ARCH_MTD_XIP
159 bool
160
161config GENERIC_HARDIRQS_NO__DO_IRQ
162 def_bool y
163
164if OPROFILE
165
166config OPROFILE_ARMV6
167 def_bool y
168 depends on CPU_V6 && !SMP
169 select OPROFILE_ARM11_CORE
170
171config OPROFILE_MPCORE
172 def_bool y
173 depends on CPU_V6 && SMP
174 select OPROFILE_ARM11_CORE
175
176config OPROFILE_ARM11_CORE
177 bool
178
179config OPROFILE_ARMV7
180 def_bool y
181 depends on CPU_V7 && !SMP
182 bool
183
184endif
185
186config VECTORS_BASE
187 hex
188 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
189 default DRAM_BASE if REMAP_VECTORS_TO_RAM
190 default 0x00000000
191 help
192 The base address of exception vectors.
193
194source "init/Kconfig"
195
196source "kernel/Kconfig.freezer"
197
198menu "System Type"
199
200config MMU
201 bool "MMU-based Paged Memory Management Support"
202 default y
203 help
204 Select if you want MMU-based virtualised addressing space
205 support by paged memory management. If unsure, say 'Y'.
206
207choice
208 prompt "ARM system type"
209 default ARCH_VERSATILE
210
211config ARCH_AAEC2000
212 bool "Agilent AAEC-2000 based"
213 select CPU_ARM920T
214 select ARM_AMBA
215 select HAVE_CLK
216 help
217 This enables support for systems based on the Agilent AAEC-2000
218
219config ARCH_INTEGRATOR
220 bool "ARM Ltd. Integrator family"
221 select ARM_AMBA
222 select ARCH_HAS_CPUFREQ
223 select HAVE_CLK
224 select COMMON_CLKDEV
225 select ICST525
226 help
227 Support for ARM's Integrator platform.
228
229config ARCH_REALVIEW
230 bool "ARM Ltd. RealView family"
231 select ARM_AMBA
232 select HAVE_CLK
233 select COMMON_CLKDEV
234 select ICST307
235 select GENERIC_TIME
236 select GENERIC_CLOCKEVENTS
237 select ARCH_WANT_OPTIONAL_GPIOLIB
238 help
239 This enables support for ARM Ltd RealView boards.
240
241config ARCH_VERSATILE
242 bool "ARM Ltd. Versatile family"
243 select ARM_AMBA
244 select ARM_VIC
245 select HAVE_CLK
246 select COMMON_CLKDEV
247 select ICST307
248 select GENERIC_TIME
249 select GENERIC_CLOCKEVENTS
250 select ARCH_WANT_OPTIONAL_GPIOLIB
251 help
252 This enables support for ARM Ltd Versatile board.
253
254config ARCH_AT91
255 bool "Atmel AT91"
256 select GENERIC_GPIO
257 select ARCH_REQUIRE_GPIOLIB
258 select HAVE_CLK
259 help
260 This enables support for systems based on the Atmel AT91RM9200,
261 AT91SAM9 and AT91CAP9 processors.
262
263config ARCH_CLPS711X
264 bool "Cirrus Logic CLPS711x/EP721x-based"
265 select CPU_ARM720T
266 help
267 Support for Cirrus Logic 711x/721x based boards.
268
269config ARCH_GEMINI
270 bool "Cortina Systems Gemini"
271 select CPU_FA526
272 select GENERIC_GPIO
273 select ARCH_REQUIRE_GPIOLIB
274 help
275 Support for the Cortina Systems Gemini family SoCs
276
277config ARCH_EBSA110
278 bool "EBSA-110"
279 select CPU_SA110
280 select ISA
281 select NO_IOPORT
282 help
283 This is an evaluation board for the StrongARM processor available
284 from Digital. It has limited hardware on-board, including an
285 Ethernet interface, two PCMCIA sockets, two serial ports and a
286 parallel port.
287
288config ARCH_EP93XX
289 bool "EP93xx-based"
290 select CPU_ARM920T
291 select ARM_AMBA
292 select ARM_VIC
293 select GENERIC_GPIO
294 select HAVE_CLK
295 select COMMON_CLKDEV
296 select ARCH_REQUIRE_GPIOLIB
297 select ARCH_HAS_HOLES_MEMORYMODEL
298 help
299 This enables support for the Cirrus EP93xx series of CPUs.
300
301config ARCH_FOOTBRIDGE
302 bool "FootBridge"
303 select CPU_SA110
304 select FOOTBRIDGE
305 help
306 Support for systems based on the DC21285 companion chip
307 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
308
309config ARCH_MXC
310 bool "Freescale MXC/iMX-based"
311 select GENERIC_TIME
312 select GENERIC_CLOCKEVENTS
313 select ARCH_MTD_XIP
314 select GENERIC_GPIO
315 select ARCH_REQUIRE_GPIOLIB
316 select HAVE_CLK
317 help
318 Support for Freescale MXC/iMX-based family of processors
319
320config ARCH_STMP3XXX
321 bool "Freescale STMP3xxx"
322 select CPU_ARM926T
323 select HAVE_CLK
324 select COMMON_CLKDEV
325 select ARCH_REQUIRE_GPIOLIB
326 select GENERIC_TIME
327 select GENERIC_CLOCKEVENTS
328 select GENERIC_GPIO
329 select USB_ARCH_HAS_EHCI
330 help
331 Support for systems based on the Freescale 3xxx CPUs.
332
333config ARCH_NETX
334 bool "Hilscher NetX based"
335 select CPU_ARM926T
336 select ARM_VIC
337 select GENERIC_CLOCKEVENTS
338 select GENERIC_TIME
339 help
340 This enables support for systems based on the Hilscher NetX Soc
341
342config ARCH_H720X
343 bool "Hynix HMS720x-based"
344 select CPU_ARM720T
345 select ISA_DMA_API
346 help
347 This enables support for systems based on the Hynix HMS720x
348
349config ARCH_NOMADIK
350 bool "STMicroelectronics Nomadik"
351 select ARM_AMBA
352 select ARM_VIC
353 select CPU_ARM926T
354 select HAVE_CLK
355 select COMMON_CLKDEV
356 select GENERIC_TIME
357 select GENERIC_CLOCKEVENTS
358 select GENERIC_GPIO
359 select ARCH_REQUIRE_GPIOLIB
360 help
361 Support for the Nomadik platform by ST-Ericsson
362
363config ARCH_IOP13XX
364 bool "IOP13xx-based"
365 depends on MMU
366 select CPU_XSC3
367 select PLAT_IOP
368 select PCI
369 select ARCH_SUPPORTS_MSI
370 select VMSPLIT_1G
371 help
372 Support for Intel's IOP13XX (XScale) family of processors.
373
374config ARCH_IOP32X
375 bool "IOP32x-based"
376 depends on MMU
377 select CPU_XSCALE
378 select PLAT_IOP
379 select PCI
380 select GENERIC_GPIO
381 select ARCH_REQUIRE_GPIOLIB
382 help
383 Support for Intel's 80219 and IOP32X (XScale) family of
384 processors.
385
386config ARCH_IOP33X
387 bool "IOP33x-based"
388 depends on MMU
389 select CPU_XSCALE
390 select PLAT_IOP
391 select PCI
392 select GENERIC_GPIO
393 select ARCH_REQUIRE_GPIOLIB
394 help
395 Support for Intel's IOP33X (XScale) family of processors.
396
397config ARCH_IXP23XX
398 bool "IXP23XX-based"
399 depends on MMU
400 select CPU_XSC3
401 select PCI
402 help
403 Support for Intel's IXP23xx (XScale) family of processors.
404
405config ARCH_IXP2000
406 bool "IXP2400/2800-based"
407 depends on MMU
408 select CPU_XSCALE
409 select PCI
410 help
411 Support for Intel's IXP2400/2800 (XScale) family of processors.
412
413config ARCH_IXP4XX
414 bool "IXP4xx-based"
415 depends on MMU
416 select CPU_XSCALE
417 select GENERIC_GPIO
418 select GENERIC_TIME
419 select GENERIC_CLOCKEVENTS
420 select DMABOUNCE if PCI
421 help
422 Support for Intel's IXP4XX (XScale) family of processors.
423
424config ARCH_L7200
425 bool "LinkUp-L7200"
426 select CPU_ARM720T
427 select FIQ
428 help
429 Say Y here if you intend to run this kernel on a LinkUp Systems
430 L7200 Software Development Board which uses an ARM720T processor.
431 Information on this board can be obtained at:
432
433 <http://www.linkupsys.com/>
434
435 If you have any questions or comments about the Linux kernel port
436 to this board, send e-mail to <sjhill@cotw.com>.
437
438config ARCH_DOVE
439 bool "Marvell Dove"
440 select PCI
441 select GENERIC_GPIO
442 select ARCH_REQUIRE_GPIOLIB
443 select GENERIC_TIME
444 select GENERIC_CLOCKEVENTS
445 select PLAT_ORION
446 help
447 Support for the Marvell Dove SoC 88AP510
448
449config ARCH_KIRKWOOD
450 bool "Marvell Kirkwood"
451 select CPU_FEROCEON
452 select PCI
453 select GENERIC_GPIO
454 select ARCH_REQUIRE_GPIOLIB
455 select GENERIC_TIME
456 select GENERIC_CLOCKEVENTS
457 select PLAT_ORION
458 help
459 Support for the following Marvell Kirkwood series SoCs:
460 88F6180, 88F6192 and 88F6281.
461
462config ARCH_LOKI
463 bool "Marvell Loki (88RC8480)"
464 select CPU_FEROCEON
465 select GENERIC_TIME
466 select GENERIC_CLOCKEVENTS
467 select PLAT_ORION
468 help
469 Support for the Marvell Loki (88RC8480) SoC.
470
471config ARCH_MV78XX0
472 bool "Marvell MV78xx0"
473 select CPU_FEROCEON
474 select PCI
475 select GENERIC_GPIO
476 select ARCH_REQUIRE_GPIOLIB
477 select GENERIC_TIME
478 select GENERIC_CLOCKEVENTS
479 select PLAT_ORION
480 help
481 Support for the following Marvell MV78xx0 series SoCs:
482 MV781x0, MV782x0.
483
484config ARCH_ORION5X
485 bool "Marvell Orion"
486 depends on MMU
487 select CPU_FEROCEON
488 select PCI
489 select GENERIC_GPIO
490 select ARCH_REQUIRE_GPIOLIB
491 select GENERIC_TIME
492 select GENERIC_CLOCKEVENTS
493 select PLAT_ORION
494 help
495 Support for the following Marvell Orion 5x series SoCs:
496 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
497 Orion-2 (5281), Orion-1-90 (6183).
498
499config ARCH_MMP
500 bool "Marvell PXA168/910"
501 depends on MMU
502 select GENERIC_GPIO
503 select ARCH_REQUIRE_GPIOLIB
504 select HAVE_CLK
505 select COMMON_CLKDEV
506 select GENERIC_TIME
507 select GENERIC_CLOCKEVENTS
508 select TICK_ONESHOT
509 select PLAT_PXA
510 help
511 Support for Marvell's PXA168/910 processor line.
512
513config ARCH_KS8695
514 bool "Micrel/Kendin KS8695"
515 select CPU_ARM922T
516 select GENERIC_GPIO
517 select ARCH_REQUIRE_GPIOLIB
518 help
519 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
520 System-on-Chip devices.
521
522config ARCH_NS9XXX
523 bool "NetSilicon NS9xxx"
524 select CPU_ARM926T
525 select GENERIC_GPIO
526 select GENERIC_TIME
527 select GENERIC_CLOCKEVENTS
528 select HAVE_CLK
529 help
530 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
531 System.
532
533 <http://www.digi.com/products/microprocessors/index.jsp>
534
535config ARCH_W90X900
536 bool "Nuvoton W90X900 CPU"
537 select CPU_ARM926T
538 select ARCH_REQUIRE_GPIOLIB
539 select GENERIC_GPIO
540 select HAVE_CLK
541 select COMMON_CLKDEV
542 select GENERIC_TIME
543 select GENERIC_CLOCKEVENTS
544 help
545 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
546 At present, the w90x900 has been renamed nuc900, regarding
547 the ARM series product line, you can login the following
548 link address to know more.
549
550 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
551 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
552
553config ARCH_PNX4008
554 bool "Philips Nexperia PNX4008 Mobile"
555 select CPU_ARM926T
556 select HAVE_CLK
557 help
558 This enables support for Philips PNX4008 mobile platform.
559
560config ARCH_PXA
561 bool "PXA2xx/PXA3xx-based"
562 depends on MMU
563 select ARCH_MTD_XIP
564 select ARCH_HAS_CPUFREQ
565 select GENERIC_GPIO
566 select HAVE_CLK
567 select COMMON_CLKDEV
568 select ARCH_REQUIRE_GPIOLIB
569 select GENERIC_TIME
570 select GENERIC_CLOCKEVENTS
571 select TICK_ONESHOT
572 select PLAT_PXA
573 help
574 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
575
576config ARCH_MSM
577 bool "Qualcomm MSM"
578 select CPU_V6
579 select GENERIC_TIME
580 select GENERIC_CLOCKEVENTS
581 help
582 Support for Qualcomm MSM7K based systems. This runs on the ARM11
583 apps processor of the MSM7K and depends on a shared memory
584 interface to the ARM9 modem processor which runs the baseband stack
585 and controls some vital subsystems (clock and power control, etc).
586
587config ARCH_RPC
588 bool "RiscPC"
589 select ARCH_ACORN
590 select FIQ
591 select TIMER_ACORN
592 select ARCH_MAY_HAVE_PC_FDC
593 select HAVE_PATA_PLATFORM
594 select ISA_DMA_API
595 select NO_IOPORT
596 select ARCH_SPARSEMEM_ENABLE
597 help
598 On the Acorn Risc-PC, Linux can support the internal IDE disk and
599 CD-ROM interface, serial and parallel port, and the floppy drive.
600
601config ARCH_SA1100
602 bool "SA1100-based"
603 select CPU_SA1100
604 select ISA
605 select ARCH_SPARSEMEM_ENABLE
606 select ARCH_MTD_XIP
607 select ARCH_HAS_CPUFREQ
608 select CPU_FREQ
609 select GENERIC_GPIO
610 select GENERIC_TIME
611 select GENERIC_CLOCKEVENTS
612 select HAVE_CLK
613 select TICK_ONESHOT
614 select ARCH_REQUIRE_GPIOLIB
615 help
616 Support for StrongARM 11x0 based boards.
617
618config ARCH_S3C2410
619 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
620 select GENERIC_GPIO
621 select ARCH_HAS_CPUFREQ
622 select HAVE_CLK
623 help
624 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
625 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
626 the Samsung SMDK2410 development board (and derivatives).
627
628config ARCH_S3C64XX
629 bool "Samsung S3C64XX"
630 select PLAT_SAMSUNG
631 select CPU_V6
632 select GENERIC_GPIO
633 select ARM_VIC
634 select HAVE_CLK
635 select NO_IOPORT
636 select ARCH_HAS_CPUFREQ
637 select ARCH_REQUIRE_GPIOLIB
638 select SAMSUNG_CLKSRC
639 select SAMSUNG_IRQ_VIC_TIMER
640 select SAMSUNG_IRQ_UART
641 select S3C_GPIO_TRACK
642 select S3C_GPIO_PULL_UPDOWN
643 select S3C_GPIO_CFG_S3C24XX
644 select S3C_GPIO_CFG_S3C64XX
645 select S3C_DEV_NAND
646 select USB_ARCH_HAS_OHCI
647 select SAMSUNG_GPIOLIB_4BIT
648 help
649 Samsung S3C64XX series based systems
650
651config ARCH_S5P6440
652 bool "Samsung S5P6440"
653 select CPU_V6
654 select GENERIC_GPIO
655 select HAVE_CLK
656 help
657 Samsung S5P6440 CPU based systems
658
659config ARCH_S5P6442
660 bool "Samsung S5P6442"
661 select CPU_V6
662 select GENERIC_GPIO
663 select HAVE_CLK
664 help
665 Samsung S5P6442 CPU based systems
666
667config ARCH_S5PC1XX
668 bool "Samsung S5PC1XX"
669 select GENERIC_GPIO
670 select HAVE_CLK
671 select CPU_V7
672 help
673 Samsung S5PC1XX series based systems
674
675config ARCH_SHARK
676 bool "Shark"
677 select CPU_SA110
678 select ISA
679 select ISA_DMA
680 select ZONE_DMA
681 select PCI
682 help
683 Support for the StrongARM based Digital DNARD machine, also known
684 as "Shark" (<http://www.shark-linux.de/shark.html>).
685
686config ARCH_LH7A40X
687 bool "Sharp LH7A40X"
688 select CPU_ARM922T
689 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
690 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
691 help
692 Say Y here for systems based on one of the Sharp LH7A40X
693 System on a Chip processors. These CPUs include an ARM922T
694 core with a wide array of integrated devices for
695 hand-held and low-power applications.
696
697config ARCH_U300
698 bool "ST-Ericsson U300 Series"
699 depends on MMU
700 select CPU_ARM926T
701 select HAVE_TCM
702 select ARM_AMBA
703 select ARM_VIC
704 select GENERIC_TIME
705 select GENERIC_CLOCKEVENTS
706 select HAVE_CLK
707 select COMMON_CLKDEV
708 select GENERIC_GPIO
709 help
710 Support for ST-Ericsson U300 series mobile platforms.
711
712config ARCH_DAVINCI
713 bool "TI DaVinci"
714 select CPU_ARM926T
715 select GENERIC_TIME
716 select GENERIC_CLOCKEVENTS
717 select GENERIC_GPIO
718 select ARCH_REQUIRE_GPIOLIB
719 select HAVE_CLK
720 select ZONE_DMA
721 select HAVE_IDE
722 select COMMON_CLKDEV
723 select GENERIC_ALLOCATOR
724 select ARCH_HAS_HOLES_MEMORYMODEL
725 help
726 Support for TI's DaVinci platform.
727
728config ARCH_OMAP
729 bool "TI OMAP"
730 select GENERIC_GPIO
731 select HAVE_CLK
732 select ARCH_REQUIRE_GPIOLIB
733 select ARCH_HAS_CPUFREQ
734 select GENERIC_TIME
735 select GENERIC_CLOCKEVENTS
736 help
737 Support for TI's OMAP platform (OMAP1 and OMAP2).
738
739config ARCH_BCMRING
740 bool "Broadcom BCMRING"
741 depends on MMU
742 select CPU_V6
743 select ARM_AMBA
744 select COMMON_CLKDEV
745 select GENERIC_TIME
746 select GENERIC_CLOCKEVENTS
747 select ARCH_WANT_OPTIONAL_GPIOLIB
748 help
749 Support for Broadcom's BCMRing platform.
750
751config ARCH_U8500
752 bool "ST-Ericsson U8500 Series"
753 select CPU_V7
754 select ARM_AMBA
755 select GENERIC_TIME
756 select GENERIC_CLOCKEVENTS
757 select COMMON_CLKDEV
758 help
759 Support for ST-Ericsson's Ux500 architecture
760
761endchoice
762
763source "arch/arm/mach-clps711x/Kconfig"
764
765source "arch/arm/mach-ep93xx/Kconfig"
766
767source "arch/arm/mach-footbridge/Kconfig"
768
769source "arch/arm/mach-gemini/Kconfig"
770
771source "arch/arm/mach-integrator/Kconfig"
772
773source "arch/arm/mach-iop32x/Kconfig"
774
775source "arch/arm/mach-iop33x/Kconfig"
776
777source "arch/arm/mach-iop13xx/Kconfig"
778
779source "arch/arm/mach-ixp4xx/Kconfig"
780
781source "arch/arm/mach-ixp2000/Kconfig"
782
783source "arch/arm/mach-ixp23xx/Kconfig"
784
785source "arch/arm/mach-loki/Kconfig"
786
787source "arch/arm/mach-mv78xx0/Kconfig"
788
789source "arch/arm/mach-pxa/Kconfig"
790source "arch/arm/plat-pxa/Kconfig"
791
792source "arch/arm/mach-mmp/Kconfig"
793
794source "arch/arm/mach-sa1100/Kconfig"
795
796source "arch/arm/plat-omap/Kconfig"
797
798source "arch/arm/mach-omap1/Kconfig"
799
800source "arch/arm/mach-omap2/Kconfig"
801
802source "arch/arm/mach-orion5x/Kconfig"
803
804source "arch/arm/mach-kirkwood/Kconfig"
805
806source "arch/arm/mach-dove/Kconfig"
807
808source "arch/arm/plat-samsung/Kconfig"
809source "arch/arm/plat-s3c24xx/Kconfig"
810source "arch/arm/plat-s5p/Kconfig"
811source "arch/arm/plat-s5pc1xx/Kconfig"
812
813if ARCH_S3C2410
814source "arch/arm/mach-s3c2400/Kconfig"
815source "arch/arm/mach-s3c2410/Kconfig"
816source "arch/arm/mach-s3c2412/Kconfig"
817source "arch/arm/mach-s3c2440/Kconfig"
818source "arch/arm/mach-s3c2443/Kconfig"
819endif
820
821if ARCH_S3C64XX
822source "arch/arm/mach-s3c64xx/Kconfig"
823endif
824
825source "arch/arm/mach-s5p6440/Kconfig"
826
827source "arch/arm/mach-s5p6442/Kconfig"
828
829source "arch/arm/plat-stmp3xxx/Kconfig"
830
831if ARCH_S5PC1XX
832source "arch/arm/mach-s5pc100/Kconfig"
833endif
834
835source "arch/arm/mach-lh7a40x/Kconfig"
836
837source "arch/arm/mach-h720x/Kconfig"
838
839source "arch/arm/mach-versatile/Kconfig"
840
841source "arch/arm/mach-aaec2000/Kconfig"
842
843source "arch/arm/mach-realview/Kconfig"
844
845source "arch/arm/mach-at91/Kconfig"
846
847source "arch/arm/plat-mxc/Kconfig"
848
849source "arch/arm/mach-nomadik/Kconfig"
850source "arch/arm/plat-nomadik/Kconfig"
851
852source "arch/arm/mach-netx/Kconfig"
853
854source "arch/arm/mach-ns9xxx/Kconfig"
855
856source "arch/arm/mach-davinci/Kconfig"
857
858source "arch/arm/mach-ks8695/Kconfig"
859
860source "arch/arm/mach-msm/Kconfig"
861
862source "arch/arm/mach-u300/Kconfig"
863
864source "arch/arm/mach-w90x900/Kconfig"
865
866source "arch/arm/mach-bcmring/Kconfig"
867
868source "arch/arm/mach-ux500/Kconfig"
869
870# Definitions to make life easier
871config ARCH_ACORN
872 bool
873
874config PLAT_IOP
875 bool
876 select GENERIC_CLOCKEVENTS
877 select GENERIC_TIME
878
879config PLAT_ORION
880 bool
881
882config PLAT_PXA
883 bool
884
885source arch/arm/mm/Kconfig
886
887config IWMMXT
888 bool "Enable iWMMXt support"
889 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
890 default y if PXA27x || PXA3xx || ARCH_MMP
891 help
892 Enable support for iWMMXt context switching at run time if
893 running on a CPU that supports it.
894
895# bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
896config XSCALE_PMU
897 bool
898 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
899 default y
900
901if !MMU
902source "arch/arm/Kconfig-nommu"
903endif
904
905config ARM_ERRATA_411920
906 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
907 depends on CPU_V6 && !SMP
908 help
909 Invalidation of the Instruction Cache operation can
910 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
911 It does not affect the MPCore. This option enables the ARM Ltd.
912 recommended workaround.
913
914config ARM_ERRATA_430973
915 bool "ARM errata: Stale prediction on replaced interworking branch"
916 depends on CPU_V7
917 help
918 This option enables the workaround for the 430973 Cortex-A8
919 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
920 interworking branch is replaced with another code sequence at the
921 same virtual address, whether due to self-modifying code or virtual
922 to physical address re-mapping, Cortex-A8 does not recover from the
923 stale interworking branch prediction. This results in Cortex-A8
924 executing the new code sequence in the incorrect ARM or Thumb state.
925 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
926 and also flushes the branch target cache at every context switch.
927 Note that setting specific bits in the ACTLR register may not be
928 available in non-secure mode.
929
930config ARM_ERRATA_458693
931 bool "ARM errata: Processor deadlock when a false hazard is created"
932 depends on CPU_V7
933 help
934 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
935 erratum. For very specific sequences of memory operations, it is
936 possible for a hazard condition intended for a cache line to instead
937 be incorrectly associated with a different cache line. This false
938 hazard might then cause a processor deadlock. The workaround enables
939 the L1 caching of the NEON accesses and disables the PLD instruction
940 in the ACTLR register. Note that setting specific bits in the ACTLR
941 register may not be available in non-secure mode.
942
943config ARM_ERRATA_460075
944 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
945 depends on CPU_V7
946 help
947 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
948 erratum. Any asynchronous access to the L2 cache may encounter a
949 situation in which recent store transactions to the L2 cache are lost
950 and overwritten with stale memory contents from external memory. The
951 workaround disables the write-allocate mode for the L2 cache via the
952 ACTLR register. Note that setting specific bits in the ACTLR register
953 may not be available in non-secure mode.
954
955endmenu
956
957source "arch/arm/common/Kconfig"
958
959config FORCE_MAX_ZONEORDER
960 int
961 depends on SA1111
962 default "9"
963
964menu "Bus support"
965
966config ARM_AMBA
967 bool
968
969config ISA
970 bool
971 help
972 Find out whether you have ISA slots on your motherboard. ISA is the
973 name of a bus system, i.e. the way the CPU talks to the other stuff
974 inside your box. Other bus systems are PCI, EISA, MicroChannel
975 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
976 newer boards don't support it. If you have ISA, say Y, otherwise N.
977
978# Select ISA DMA controller support
979config ISA_DMA
980 bool
981 select ISA_DMA_API
982
983# Select ISA DMA interface
984config ISA_DMA_API
985 bool
986
987config PCI
988 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
989 help
990 Find out whether you have a PCI motherboard. PCI is the name of a
991 bus system, i.e. the way the CPU talks to the other stuff inside
992 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
993 VESA. If you have PCI, say Y, otherwise N.
994
995config PCI_SYSCALL
996 def_bool PCI
997
998# Select the host bridge type
999config PCI_HOST_VIA82C505
1000 bool
1001 depends on PCI && ARCH_SHARK
1002 default y
1003
1004config PCI_HOST_ITE8152
1005 bool
1006 depends on PCI && MACH_ARMCORE
1007 default y
1008 select DMABOUNCE
1009
1010source "drivers/pci/Kconfig"
1011
1012source "drivers/pcmcia/Kconfig"
1013
1014endmenu
1015
1016menu "Kernel Features"
1017
1018source "kernel/time/Kconfig"
1019
1020config SMP
1021 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1022 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1023 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1024 depends on GENERIC_CLOCKEVENTS
1025 select USE_GENERIC_SMP_HELPERS
1026 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1027 help
1028 This enables support for systems with more than one CPU. If you have
1029 a system with only one CPU, like most personal computers, say N. If
1030 you have a system with more than one CPU, say Y.
1031
1032 If you say N here, the kernel will run on single and multiprocessor
1033 machines, but will use only one CPU of a multiprocessor machine. If
1034 you say Y here, the kernel will run on many, but not all, single
1035 processor machines. On a single processor machine, the kernel will
1036 run faster if you say N here.
1037
1038 See also <file:Documentation/i386/IO-APIC.txt>,
1039 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1040 <http://www.linuxdoc.org/docs.html#howto>.
1041
1042 If you don't know what to do here, say N.
1043
1044config HAVE_ARM_SCU
1045 bool
1046 depends on SMP
1047 help
1048 This option enables support for the ARM system coherency unit
1049
1050config HAVE_ARM_TWD
1051 bool
1052 depends on SMP
1053 help
1054 This options enables support for the ARM timer and watchdog unit
1055
1056choice
1057 prompt "Memory split"
1058 default VMSPLIT_3G
1059 help
1060 Select the desired split between kernel and user memory.
1061
1062 If you are not absolutely sure what you are doing, leave this
1063 option alone!
1064
1065 config VMSPLIT_3G
1066 bool "3G/1G user/kernel split"
1067 config VMSPLIT_2G
1068 bool "2G/2G user/kernel split"
1069 config VMSPLIT_1G
1070 bool "1G/3G user/kernel split"
1071endchoice
1072
1073config PAGE_OFFSET
1074 hex
1075 default 0x40000000 if VMSPLIT_1G
1076 default 0x80000000 if VMSPLIT_2G
1077 default 0xC0000000
1078
1079config NR_CPUS
1080 int "Maximum number of CPUs (2-32)"
1081 range 2 32
1082 depends on SMP
1083 default "4"
1084
1085config HOTPLUG_CPU
1086 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1087 depends on SMP && HOTPLUG && EXPERIMENTAL
1088 help
1089 Say Y here to experiment with turning CPUs off and on. CPUs
1090 can be controlled through /sys/devices/system/cpu.
1091
1092config LOCAL_TIMERS
1093 bool "Use local timer interrupts"
1094 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1095 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1096 default y
1097 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1098 help
1099 Enable support for local timers on SMP platforms, rather then the
1100 legacy IPI broadcast method. Local timers allows the system
1101 accounting to be spread across the timer interval, preventing a
1102 "thundering herd" at every timer tick.
1103
1104source kernel/Kconfig.preempt
1105
1106config HZ
1107 int
1108 default 128 if ARCH_L7200
1109 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442
1110 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1111 default AT91_TIMER_HZ if ARCH_AT91
1112 default 100
1113
1114config THUMB2_KERNEL
1115 bool "Compile the kernel in Thumb-2 mode"
1116 depends on CPU_V7 && EXPERIMENTAL
1117 select AEABI
1118 select ARM_ASM_UNIFIED
1119 help
1120 By enabling this option, the kernel will be compiled in
1121 Thumb-2 mode. A compiler/assembler that understand the unified
1122 ARM-Thumb syntax is needed.
1123
1124 If unsure, say N.
1125
1126config ARM_ASM_UNIFIED
1127 bool
1128
1129config AEABI
1130 bool "Use the ARM EABI to compile the kernel"
1131 help
1132 This option allows for the kernel to be compiled using the latest
1133 ARM ABI (aka EABI). This is only useful if you are using a user
1134 space environment that is also compiled with EABI.
1135
1136 Since there are major incompatibilities between the legacy ABI and
1137 EABI, especially with regard to structure member alignment, this
1138 option also changes the kernel syscall calling convention to
1139 disambiguate both ABIs and allow for backward compatibility support
1140 (selected with CONFIG_OABI_COMPAT).
1141
1142 To use this you need GCC version 4.0.0 or later.
1143
1144config OABI_COMPAT
1145 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1146 depends on AEABI && EXPERIMENTAL
1147 default y
1148 help
1149 This option preserves the old syscall interface along with the
1150 new (ARM EABI) one. It also provides a compatibility layer to
1151 intercept syscalls that have structure arguments which layout
1152 in memory differs between the legacy ABI and the new ARM EABI
1153 (only for non "thumb" binaries). This option adds a tiny
1154 overhead to all syscalls and produces a slightly larger kernel.
1155 If you know you'll be using only pure EABI user space then you
1156 can say N here. If this option is not selected and you attempt
1157 to execute a legacy ABI binary then the result will be
1158 UNPREDICTABLE (in fact it can be predicted that it won't work
1159 at all). If in doubt say Y.
1160
1161config ARCH_HAS_HOLES_MEMORYMODEL
1162 bool
1163
1164# Discontigmem is deprecated
1165config ARCH_DISCONTIGMEM_ENABLE
1166 bool
1167
1168config ARCH_SPARSEMEM_ENABLE
1169 bool
1170
1171config ARCH_SPARSEMEM_DEFAULT
1172 def_bool ARCH_SPARSEMEM_ENABLE
1173
1174config ARCH_SELECT_MEMORY_MODEL
1175 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1176
1177config NODES_SHIFT
1178 int
1179 default "4" if ARCH_LH7A40X
1180 default "2"
1181 depends on NEED_MULTIPLE_NODES
1182
1183config HIGHMEM
1184 bool "High Memory Support (EXPERIMENTAL)"
1185 depends on MMU && EXPERIMENTAL
1186 help
1187 The address space of ARM processors is only 4 Gigabytes large
1188 and it has to accommodate user address space, kernel address
1189 space as well as some memory mapped IO. That means that, if you
1190 have a large amount of physical memory and/or IO, not all of the
1191 memory can be "permanently mapped" by the kernel. The physical
1192 memory that is not permanently mapped is called "high memory".
1193
1194 Depending on the selected kernel/user memory split, minimum
1195 vmalloc space and actual amount of RAM, you may not need this
1196 option which should result in a slightly faster kernel.
1197
1198 If unsure, say n.
1199
1200config HIGHPTE
1201 bool "Allocate 2nd-level pagetables from highmem"
1202 depends on HIGHMEM
1203 depends on !OUTER_CACHE
1204
1205source "mm/Kconfig"
1206
1207config LEDS
1208 bool "Timer and CPU usage LEDs"
1209 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1210 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1211 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1212 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1213 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1214 ARCH_AT91 || ARCH_DAVINCI || \
1215 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1216 help
1217 If you say Y here, the LEDs on your machine will be used
1218 to provide useful information about your current system status.
1219
1220 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1221 be able to select which LEDs are active using the options below. If
1222 you are compiling a kernel for the EBSA-110 or the LART however, the
1223 red LED will simply flash regularly to indicate that the system is
1224 still functional. It is safe to say Y here if you have a CATS
1225 system, but the driver will do nothing.
1226
1227config LEDS_TIMER
1228 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1229 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1230 || MACH_OMAP_PERSEUS2
1231 depends on LEDS
1232 depends on !GENERIC_CLOCKEVENTS
1233 default y if ARCH_EBSA110
1234 help
1235 If you say Y here, one of the system LEDs (the green one on the
1236 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1237 will flash regularly to indicate that the system is still
1238 operational. This is mainly useful to kernel hackers who are
1239 debugging unstable kernels.
1240
1241 The LART uses the same LED for both Timer LED and CPU usage LED
1242 functions. You may choose to use both, but the Timer LED function
1243 will overrule the CPU usage LED.
1244
1245config LEDS_CPU
1246 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1247 !ARCH_OMAP) \
1248 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1249 || MACH_OMAP_PERSEUS2
1250 depends on LEDS
1251 help
1252 If you say Y here, the red LED will be used to give a good real
1253 time indication of CPU usage, by lighting whenever the idle task
1254 is not currently executing.
1255
1256 The LART uses the same LED for both Timer LED and CPU usage LED
1257 functions. You may choose to use both, but the Timer LED function
1258 will overrule the CPU usage LED.
1259
1260config ALIGNMENT_TRAP
1261 bool
1262 depends on CPU_CP15_MMU
1263 default y if !ARCH_EBSA110
1264 help
1265 ARM processors cannot fetch/store information which is not
1266 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1267 address divisible by 4. On 32-bit ARM processors, these non-aligned
1268 fetch/store instructions will be emulated in software if you say
1269 here, which has a severe performance impact. This is necessary for
1270 correct operation of some network protocols. With an IP-only
1271 configuration it is safe to say N, otherwise say Y.
1272
1273config UACCESS_WITH_MEMCPY
1274 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1275 depends on MMU && EXPERIMENTAL
1276 default y if CPU_FEROCEON
1277 help
1278 Implement faster copy_to_user and clear_user methods for CPU
1279 cores where a 8-word STM instruction give significantly higher
1280 memory write throughput than a sequence of individual 32bit stores.
1281
1282 A possible side effect is a slight increase in scheduling latency
1283 between threads sharing the same address space if they invoke
1284 such copy operations with large buffers.
1285
1286 However, if the CPU data cache is using a write-allocate mode,
1287 this option is unlikely to provide any performance gain.
1288
1289endmenu
1290
1291menu "Boot options"
1292
1293# Compressed boot loader in ROM. Yes, we really want to ask about
1294# TEXT and BSS so we preserve their values in the config files.
1295config ZBOOT_ROM_TEXT
1296 hex "Compressed ROM boot loader base address"
1297 default "0"
1298 help
1299 The physical address at which the ROM-able zImage is to be
1300 placed in the target. Platforms which normally make use of
1301 ROM-able zImage formats normally set this to a suitable
1302 value in their defconfig file.
1303
1304 If ZBOOT_ROM is not enabled, this has no effect.
1305
1306config ZBOOT_ROM_BSS
1307 hex "Compressed ROM boot loader BSS address"
1308 default "0"
1309 help
1310 The base address of an area of read/write memory in the target
1311 for the ROM-able zImage which must be available while the
1312 decompressor is running. It must be large enough to hold the
1313 entire decompressed kernel plus an additional 128 KiB.
1314 Platforms which normally make use of ROM-able zImage formats
1315 normally set this to a suitable value in their defconfig file.
1316
1317 If ZBOOT_ROM is not enabled, this has no effect.
1318
1319config ZBOOT_ROM
1320 bool "Compressed boot loader in ROM/flash"
1321 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1322 help
1323 Say Y here if you intend to execute your compressed kernel image
1324 (zImage) directly from ROM or flash. If unsure, say N.
1325
1326config CMDLINE
1327 string "Default kernel command string"
1328 default ""
1329 help
1330 On some architectures (EBSA110 and CATS), there is currently no way
1331 for the boot loader to pass arguments to the kernel. For these
1332 architectures, you should supply some command-line options at build
1333 time by entering them here. As a minimum, you should specify the
1334 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1335
1336config XIP_KERNEL
1337 bool "Kernel Execute-In-Place from ROM"
1338 depends on !ZBOOT_ROM
1339 help
1340 Execute-In-Place allows the kernel to run from non-volatile storage
1341 directly addressable by the CPU, such as NOR flash. This saves RAM
1342 space since the text section of the kernel is not loaded from flash
1343 to RAM. Read-write sections, such as the data section and stack,
1344 are still copied to RAM. The XIP kernel is not compressed since
1345 it has to run directly from flash, so it will take more space to
1346 store it. The flash address used to link the kernel object files,
1347 and for storing it, is configuration dependent. Therefore, if you
1348 say Y here, you must know the proper physical address where to
1349 store the kernel image depending on your own flash memory usage.
1350
1351 Also note that the make target becomes "make xipImage" rather than
1352 "make zImage" or "make Image". The final kernel binary to put in
1353 ROM memory will be arch/arm/boot/xipImage.
1354
1355 If unsure, say N.
1356
1357config XIP_PHYS_ADDR
1358 hex "XIP Kernel Physical Location"
1359 depends on XIP_KERNEL
1360 default "0x00080000"
1361 help
1362 This is the physical address in your flash memory the kernel will
1363 be linked for and stored to. This address is dependent on your
1364 own flash usage.
1365
1366config KEXEC
1367 bool "Kexec system call (EXPERIMENTAL)"
1368 depends on EXPERIMENTAL
1369 help
1370 kexec is a system call that implements the ability to shutdown your
1371 current kernel, and to start another kernel. It is like a reboot
1372 but it is independent of the system firmware. And like a reboot
1373 you can start any kernel with it, not just Linux.
1374
1375 It is an ongoing process to be certain the hardware in a machine
1376 is properly shutdown, so do not be surprised if this code does not
1377 initially work for you. It may help to enable device hotplugging
1378 support.
1379
1380config ATAGS_PROC
1381 bool "Export atags in procfs"
1382 depends on KEXEC
1383 default y
1384 help
1385 Should the atags used to boot the kernel be exported in an "atags"
1386 file in procfs. Useful with kexec.
1387
1388endmenu
1389
1390menu "CPU Power Management"
1391
1392if ARCH_HAS_CPUFREQ
1393
1394source "drivers/cpufreq/Kconfig"
1395
1396config CPU_FREQ_SA1100
1397 bool
1398
1399config CPU_FREQ_SA1110
1400 bool
1401
1402config CPU_FREQ_INTEGRATOR
1403 tristate "CPUfreq driver for ARM Integrator CPUs"
1404 depends on ARCH_INTEGRATOR && CPU_FREQ
1405 default y
1406 help
1407 This enables the CPUfreq driver for ARM Integrator CPUs.
1408
1409 For details, take a look at <file:Documentation/cpu-freq>.
1410
1411 If in doubt, say Y.
1412
1413config CPU_FREQ_PXA
1414 bool
1415 depends on CPU_FREQ && ARCH_PXA && PXA25x
1416 default y
1417 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1418
1419config CPU_FREQ_S3C64XX
1420 bool "CPUfreq support for Samsung S3C64XX CPUs"
1421 depends on CPU_FREQ && CPU_S3C6410
1422
1423config CPU_FREQ_S3C
1424 bool
1425 help
1426 Internal configuration node for common cpufreq on Samsung SoC
1427
1428config CPU_FREQ_S3C24XX
1429 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1430 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1431 select CPU_FREQ_S3C
1432 help
1433 This enables the CPUfreq driver for the Samsung S3C24XX family
1434 of CPUs.
1435
1436 For details, take a look at <file:Documentation/cpu-freq>.
1437
1438 If in doubt, say N.
1439
1440config CPU_FREQ_S3C24XX_PLL
1441 bool "Support CPUfreq changing of PLL frequency"
1442 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1443 help
1444 Compile in support for changing the PLL frequency from the
1445 S3C24XX series CPUfreq driver. The PLL takes time to settle
1446 after a frequency change, so by default it is not enabled.
1447
1448 This also means that the PLL tables for the selected CPU(s) will
1449 be built which may increase the size of the kernel image.
1450
1451config CPU_FREQ_S3C24XX_DEBUG
1452 bool "Debug CPUfreq Samsung driver core"
1453 depends on CPU_FREQ_S3C24XX
1454 help
1455 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1456
1457config CPU_FREQ_S3C24XX_IODEBUG
1458 bool "Debug CPUfreq Samsung driver IO timing"
1459 depends on CPU_FREQ_S3C24XX
1460 help
1461 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1462
1463config CPU_FREQ_S3C24XX_DEBUGFS
1464 bool "Export debugfs for CPUFreq"
1465 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1466 help
1467 Export status information via debugfs.
1468
1469endif
1470
1471source "drivers/cpuidle/Kconfig"
1472
1473endmenu
1474
1475menu "Floating point emulation"
1476
1477comment "At least one emulation must be selected"
1478
1479config FPE_NWFPE
1480 bool "NWFPE math emulation"
1481 depends on !AEABI || OABI_COMPAT
1482 ---help---
1483 Say Y to include the NWFPE floating point emulator in the kernel.
1484 This is necessary to run most binaries. Linux does not currently
1485 support floating point hardware so you need to say Y here even if
1486 your machine has an FPA or floating point co-processor podule.
1487
1488 You may say N here if you are going to load the Acorn FPEmulator
1489 early in the bootup.
1490
1491config FPE_NWFPE_XP
1492 bool "Support extended precision"
1493 depends on FPE_NWFPE
1494 help
1495 Say Y to include 80-bit support in the kernel floating-point
1496 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1497 Note that gcc does not generate 80-bit operations by default,
1498 so in most cases this option only enlarges the size of the
1499 floating point emulator without any good reason.
1500
1501 You almost surely want to say N here.
1502
1503config FPE_FASTFPE
1504 bool "FastFPE math emulation (EXPERIMENTAL)"
1505 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1506 ---help---
1507 Say Y here to include the FAST floating point emulator in the kernel.
1508 This is an experimental much faster emulator which now also has full
1509 precision for the mantissa. It does not support any exceptions.
1510 It is very simple, and approximately 3-6 times faster than NWFPE.
1511
1512 It should be sufficient for most programs. It may be not suitable
1513 for scientific calculations, but you have to check this for yourself.
1514 If you do not feel you need a faster FP emulation you should better
1515 choose NWFPE.
1516
1517config VFP
1518 bool "VFP-format floating point maths"
1519 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1520 help
1521 Say Y to include VFP support code in the kernel. This is needed
1522 if your hardware includes a VFP unit.
1523
1524 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1525 release notes and additional status information.
1526
1527 Say N if your target does not have VFP hardware.
1528
1529config VFPv3
1530 bool
1531 depends on VFP
1532 default y if CPU_V7
1533
1534config NEON
1535 bool "Advanced SIMD (NEON) Extension support"
1536 depends on VFPv3 && CPU_V7
1537 help
1538 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1539 Extension.
1540
1541endmenu
1542
1543menu "Userspace binary formats"
1544
1545source "fs/Kconfig.binfmt"
1546
1547config ARTHUR
1548 tristate "RISC OS personality"
1549 depends on !AEABI
1550 help
1551 Say Y here to include the kernel code necessary if you want to run
1552 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1553 experimental; if this sounds frightening, say N and sleep in peace.
1554 You can also say M here to compile this support as a module (which
1555 will be called arthur).
1556
1557endmenu
1558
1559menu "Power management options"
1560
1561source "kernel/power/Kconfig"
1562
1563config ARCH_SUSPEND_POSSIBLE
1564 def_bool y
1565
1566endmenu
1567
1568source "net/Kconfig"
1569
1570source "drivers/Kconfig"
1571
1572source "fs/Kconfig"
1573
1574source "arch/arm/Kconfig.debug"
1575
1576source "security/Kconfig"
1577
1578source "crypto/Kconfig"
1579
1580source "lib/Kconfig"