| blob | 3b181284970f6e970b76bdd653882df90eb17b01 |
1 #
2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
4 #
6 mainmenu "Linux Kernel Configuration"
8 config 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 GENERIC_ATOMIC64 if (!CPU_32v6K)
16 select HAVE_OPROFILE
17 select HAVE_ARCH_KGDB
18 select HAVE_KPROBES if (!XIP_KERNEL)
19 select HAVE_KRETPROBES if (HAVE_KPROBES)
20 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
21 select HAVE_GENERIC_DMA_COHERENT
22 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_LZO
24 select HAVE_PERF_EVENTS
25 select PERF_USE_VMALLOC
26 help
27 The ARM series is a line of low-power-consumption RISC chip designs
28 licensed by ARM Ltd and targeted at embedded applications and
29 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
30 manufactured, but legacy ARM-based PC hardware remains popular in
31 Europe. There is an ARM Linux project with a web page at
32 <http://www.arm.linux.org.uk/>.
34 config HAVE_PWM
35 bool
37 config SYS_SUPPORTS_APM_EMULATION
38 bool
40 config GENERIC_GPIO
41 bool
43 config GENERIC_TIME
44 bool
46 config GENERIC_CLOCKEVENTS
47 bool
49 config GENERIC_CLOCKEVENTS_BROADCAST
50 bool
51 depends on GENERIC_CLOCKEVENTS
52 default y if SMP && !LOCAL_TIMERS
54 config HAVE_TCM
55 bool
56 select GENERIC_ALLOCATOR
58 config HAVE_PROC_CPU
59 bool
61 config NO_IOPORT
62 bool
64 config EISA
65 bool
66 ---help---
67 The Extended Industry Standard Architecture (EISA) bus was
68 developed as an open alternative to the IBM MicroChannel bus.
70 The EISA bus provided some of the features of the IBM MicroChannel
71 bus while maintaining backward compatibility with cards made for
72 the older ISA bus. The EISA bus saw limited use between 1988 and
73 1995 when it was made obsolete by the PCI bus.
75 Say Y here if you are building a kernel for an EISA-based machine.
77 Otherwise, say N.
79 config SBUS
80 bool
82 config MCA
83 bool
84 help
85 MicroChannel Architecture is found in some IBM PS/2 machines and
86 laptops. It is a bus system similar to PCI or ISA. See
87 <file:Documentation/mca.txt> (and especially the web page given
88 there) before attempting to build an MCA bus kernel.
90 config GENERIC_HARDIRQS
91 bool
92 default y
94 config STACKTRACE_SUPPORT
95 bool
96 default y
98 config HAVE_LATENCYTOP_SUPPORT
99 bool
100 depends on !SMP
101 default y
103 config LOCKDEP_SUPPORT
104 bool
105 default y
107 config TRACE_IRQFLAGS_SUPPORT
108 bool
109 default y
111 config HARDIRQS_SW_RESEND
112 bool
113 default y
115 config GENERIC_IRQ_PROBE
116 bool
117 default y
119 config GENERIC_LOCKBREAK
120 bool
121 default y
122 depends on SMP && PREEMPT
124 config RWSEM_GENERIC_SPINLOCK
125 bool
126 default y
128 config RWSEM_XCHGADD_ALGORITHM
129 bool
131 config ARCH_HAS_ILOG2_U32
132 bool
134 config ARCH_HAS_ILOG2_U64
135 bool
137 config ARCH_HAS_CPUFREQ
138 bool
139 help
140 Internal node to signify that the ARCH has CPUFREQ support
141 and that the relevant menu configurations are displayed for
142 it.
144 config GENERIC_HWEIGHT
145 bool
146 default y
148 config GENERIC_CALIBRATE_DELAY
149 bool
150 default y
152 config ARCH_MAY_HAVE_PC_FDC
153 bool
155 config ZONE_DMA
156 bool
158 config GENERIC_ISA_DMA
159 bool
161 config FIQ
162 bool
164 config ARCH_MTD_XIP
165 bool
167 config GENERIC_HARDIRQS_NO__DO_IRQ
168 def_bool y
170 config ARM_L1_CACHE_SHIFT_6
171 bool
172 help
173 Setting ARM L1 cache line size to 64 Bytes.
175 if OPROFILE
177 config OPROFILE_ARMV6
178 def_bool y
179 depends on CPU_V6 && !SMP
180 select OPROFILE_ARM11_CORE
182 config OPROFILE_MPCORE
183 def_bool y
184 depends on CPU_V6 && SMP
185 select OPROFILE_ARM11_CORE
187 config OPROFILE_ARM11_CORE
188 bool
190 config OPROFILE_ARMV7
191 def_bool y
192 depends on CPU_V7 && !SMP
193 bool
195 endif
197 config VECTORS_BASE
198 hex
199 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
200 default DRAM_BASE if REMAP_VECTORS_TO_RAM
201 default 0x00000000
202 help
203 The base address of exception vectors.
205 source "init/Kconfig"
207 source "kernel/Kconfig.freezer"
209 menu "System Type"
211 config MMU
212 bool "MMU-based Paged Memory Management Support"
213 default y
214 help
215 Select if you want MMU-based virtualised addressing space
216 support by paged memory management. If unsure, say 'Y'.
218 choice
219 prompt "ARM system type"
220 default ARCH_VERSATILE
222 config ARCH_AAEC2000
223 bool "Agilent AAEC-2000 based"
224 select CPU_ARM920T
225 select ARM_AMBA
226 select HAVE_CLK
227 help
228 This enables support for systems based on the Agilent AAEC-2000
230 config ARCH_INTEGRATOR
231 bool "ARM Ltd. Integrator family"
232 select ARM_AMBA
233 select ARCH_HAS_CPUFREQ
234 select HAVE_CLK
235 select COMMON_CLKDEV
236 select ICST525
237 help
238 Support for ARM's Integrator platform.
240 config ARCH_REALVIEW
241 bool "ARM Ltd. RealView family"
242 select ARM_AMBA
243 select HAVE_CLK
244 select COMMON_CLKDEV
245 select ICST307
246 select GENERIC_TIME
247 select GENERIC_CLOCKEVENTS
248 select ARCH_WANT_OPTIONAL_GPIOLIB
249 help
250 This enables support for ARM Ltd RealView boards.
252 config ARCH_VERSATILE
253 bool "ARM Ltd. Versatile family"
254 select ARM_AMBA
255 select ARM_VIC
256 select HAVE_CLK
257 select COMMON_CLKDEV
258 select ICST307
259 select GENERIC_TIME
260 select GENERIC_CLOCKEVENTS
261 select ARCH_WANT_OPTIONAL_GPIOLIB
262 help
263 This enables support for ARM Ltd Versatile board.
265 config ARCH_AT91
266 bool "Atmel AT91"
267 select GENERIC_GPIO
268 select ARCH_REQUIRE_GPIOLIB
269 select HAVE_CLK
270 help
271 This enables support for systems based on the Atmel AT91RM9200,
272 AT91SAM9 and AT91CAP9 processors.
274 config ARCH_CLPS711X
275 bool "Cirrus Logic CLPS711x/EP721x-based"
276 select CPU_ARM720T
277 help
278 Support for Cirrus Logic 711x/721x based boards.
280 config ARCH_GEMINI
281 bool "Cortina Systems Gemini"
282 select CPU_FA526
283 select GENERIC_GPIO
284 select ARCH_REQUIRE_GPIOLIB
285 help
286 Support for the Cortina Systems Gemini family SoCs
288 config ARCH_EBSA110
289 bool "EBSA-110"
290 select CPU_SA110
291 select ISA
292 select NO_IOPORT
293 help
294 This is an evaluation board for the StrongARM processor available
295 from Digital. It has limited hardware on-board, including an
296 Ethernet interface, two PCMCIA sockets, two serial ports and a
297 parallel port.
299 config ARCH_EP93XX
300 bool "EP93xx-based"
301 select CPU_ARM920T
302 select ARM_AMBA
303 select ARM_VIC
304 select GENERIC_GPIO
305 select HAVE_CLK
306 select COMMON_CLKDEV
307 select ARCH_REQUIRE_GPIOLIB
308 select ARCH_HAS_HOLES_MEMORYMODEL
309 help
310 This enables support for the Cirrus EP93xx series of CPUs.
312 config ARCH_FOOTBRIDGE
313 bool "FootBridge"
314 select CPU_SA110
315 select FOOTBRIDGE
316 help
317 Support for systems based on the DC21285 companion chip
318 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
320 config ARCH_MXC
321 bool "Freescale MXC/iMX-based"
322 select GENERIC_TIME
323 select GENERIC_CLOCKEVENTS
324 select ARCH_MTD_XIP
325 select GENERIC_GPIO
326 select ARCH_REQUIRE_GPIOLIB
327 select HAVE_CLK
328 help
329 Support for Freescale MXC/iMX-based family of processors
331 config ARCH_STMP3XXX
332 bool "Freescale STMP3xxx"
333 select CPU_ARM926T
334 select HAVE_CLK
335 select COMMON_CLKDEV
336 select ARCH_REQUIRE_GPIOLIB
337 select GENERIC_TIME
338 select GENERIC_CLOCKEVENTS
339 select GENERIC_GPIO
340 select USB_ARCH_HAS_EHCI
341 help
342 Support for systems based on the Freescale 3xxx CPUs.
344 config ARCH_NETX
345 bool "Hilscher NetX based"
346 select CPU_ARM926T
347 select ARM_VIC
348 select GENERIC_CLOCKEVENTS
349 select GENERIC_TIME
350 help
351 This enables support for systems based on the Hilscher NetX Soc
353 config ARCH_H720X
354 bool "Hynix HMS720x-based"
355 select CPU_ARM720T
356 select ISA_DMA_API
357 help
358 This enables support for systems based on the Hynix HMS720x
360 config ARCH_NOMADIK
361 bool "STMicroelectronics Nomadik"
362 select ARM_AMBA
363 select ARM_VIC
364 select CPU_ARM926T
365 select HAVE_CLK
366 select COMMON_CLKDEV
367 select GENERIC_TIME
368 select GENERIC_CLOCKEVENTS
369 select GENERIC_GPIO
370 select ARCH_REQUIRE_GPIOLIB
371 help
372 Support for the Nomadik platform by ST-Ericsson
374 config ARCH_IOP13XX
375 bool "IOP13xx-based"
376 depends on MMU
377 select CPU_XSC3
378 select PLAT_IOP
379 select PCI
380 select ARCH_SUPPORTS_MSI
381 select VMSPLIT_1G
382 help
383 Support for Intel's IOP13XX (XScale) family of processors.
385 config ARCH_IOP32X
386 bool "IOP32x-based"
387 depends on MMU
388 select CPU_XSCALE
389 select PLAT_IOP
390 select PCI
391 select GENERIC_GPIO
392 select ARCH_REQUIRE_GPIOLIB
393 help
394 Support for Intel's 80219 and IOP32X (XScale) family of
395 processors.
397 config ARCH_IOP33X
398 bool "IOP33x-based"
399 depends on MMU
400 select CPU_XSCALE
401 select PLAT_IOP
402 select PCI
403 select GENERIC_GPIO
404 select ARCH_REQUIRE_GPIOLIB
405 help
406 Support for Intel's IOP33X (XScale) family of processors.
408 config ARCH_IXP23XX
409 bool "IXP23XX-based"
410 depends on MMU
411 select CPU_XSC3
412 select PCI
413 help
414 Support for Intel's IXP23xx (XScale) family of processors.
416 config ARCH_IXP2000
417 bool "IXP2400/2800-based"
418 depends on MMU
419 select CPU_XSCALE
420 select PCI
421 help
422 Support for Intel's IXP2400/2800 (XScale) family of processors.
424 config ARCH_IXP4XX
425 bool "IXP4xx-based"
426 depends on MMU
427 select CPU_XSCALE
428 select GENERIC_GPIO
429 select GENERIC_TIME
430 select GENERIC_CLOCKEVENTS
431 select DMABOUNCE if PCI
432 help
433 Support for Intel's IXP4XX (XScale) family of processors.
435 config ARCH_L7200
436 bool "LinkUp-L7200"
437 select CPU_ARM720T
438 select FIQ
439 help
440 Say Y here if you intend to run this kernel on a LinkUp Systems
441 L7200 Software Development Board which uses an ARM720T processor.
442 Information on this board can be obtained at:
444 <http://www.linkupsys.com/>
446 If you have any questions or comments about the Linux kernel port
447 to this board, send e-mail to <sjhill@cotw.com>.
449 config ARCH_DOVE
450 bool "Marvell Dove"
451 select PCI
452 select GENERIC_GPIO
453 select ARCH_REQUIRE_GPIOLIB
454 select GENERIC_TIME
455 select GENERIC_CLOCKEVENTS
456 select PLAT_ORION
457 help
458 Support for the Marvell Dove SoC 88AP510
460 config ARCH_KIRKWOOD
461 bool "Marvell Kirkwood"
462 select CPU_FEROCEON
463 select PCI
464 select GENERIC_GPIO
465 select ARCH_REQUIRE_GPIOLIB
466 select GENERIC_TIME
467 select GENERIC_CLOCKEVENTS
468 select PLAT_ORION
469 help
470 Support for the following Marvell Kirkwood series SoCs:
471 88F6180, 88F6192 and 88F6281.
473 config ARCH_LOKI
474 bool "Marvell Loki (88RC8480)"
475 select CPU_FEROCEON
476 select GENERIC_TIME
477 select GENERIC_CLOCKEVENTS
478 select PLAT_ORION
479 help
480 Support for the Marvell Loki (88RC8480) SoC.
482 config ARCH_MV78XX0
483 bool "Marvell MV78xx0"
484 select CPU_FEROCEON
485 select PCI
486 select GENERIC_GPIO
487 select ARCH_REQUIRE_GPIOLIB
488 select GENERIC_TIME
489 select GENERIC_CLOCKEVENTS
490 select PLAT_ORION
491 help
492 Support for the following Marvell MV78xx0 series SoCs:
493 MV781x0, MV782x0.
495 config ARCH_ORION5X
496 bool "Marvell Orion"
497 depends on MMU
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 Orion 5x series SoCs:
507 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
508 Orion-2 (5281), Orion-1-90 (6183).
510 config ARCH_MMP
511 bool "Marvell PXA168/910"
512 depends on MMU
513 select GENERIC_GPIO
514 select ARCH_REQUIRE_GPIOLIB
515 select HAVE_CLK
516 select COMMON_CLKDEV
517 select GENERIC_TIME
518 select GENERIC_CLOCKEVENTS
519 select TICK_ONESHOT
520 select PLAT_PXA
521 help
522 Support for Marvell's PXA168/910 processor line.
524 config ARCH_KS8695
525 bool "Micrel/Kendin KS8695"
526 select CPU_ARM922T
527 select GENERIC_GPIO
528 select ARCH_REQUIRE_GPIOLIB
529 help
530 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
531 System-on-Chip devices.
533 config ARCH_NS9XXX
534 bool "NetSilicon NS9xxx"
535 select CPU_ARM926T
536 select GENERIC_GPIO
537 select GENERIC_TIME
538 select GENERIC_CLOCKEVENTS
539 select HAVE_CLK
540 help
541 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
542 System.
544 <http://www.digi.com/products/microprocessors/index.jsp>
546 config ARCH_W90X900
547 bool "Nuvoton W90X900 CPU"
548 select CPU_ARM926T
549 select ARCH_REQUIRE_GPIOLIB
550 select GENERIC_GPIO
551 select HAVE_CLK
552 select COMMON_CLKDEV
553 select GENERIC_TIME
554 select GENERIC_CLOCKEVENTS
555 help
556 Support for Nuvoton (Winbond logic dept.) ARM9 processor,
557 At present, the w90x900 has been renamed nuc900, regarding
558 the ARM series product line, you can login the following
559 link address to know more.
561 <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
562 ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
564 config ARCH_NUC93X
565 bool "Nuvoton NUC93X CPU"
566 select CPU_ARM926T
567 select HAVE_CLK
568 select COMMON_CLKDEV
569 help
570 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
571 low-power and high performance MPEG-4/JPEG multimedia controller chip.
573 config ARCH_PNX4008
574 bool "Philips Nexperia PNX4008 Mobile"
575 select CPU_ARM926T
576 select HAVE_CLK
577 select COMMON_CLKDEV
578 help
579 This enables support for Philips PNX4008 mobile platform.
581 config ARCH_PXA
582 bool "PXA2xx/PXA3xx-based"
583 depends on MMU
584 select ARCH_MTD_XIP
585 select ARCH_HAS_CPUFREQ
586 select GENERIC_GPIO
587 select HAVE_CLK
588 select COMMON_CLKDEV
589 select ARCH_REQUIRE_GPIOLIB
590 select GENERIC_TIME
591 select GENERIC_CLOCKEVENTS
592 select TICK_ONESHOT
593 select PLAT_PXA
594 help
595 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
597 config ARCH_MSM
598 bool "Qualcomm MSM"
599 select CPU_V6
600 select GENERIC_TIME
601 select GENERIC_CLOCKEVENTS
602 help
603 Support for Qualcomm MSM7K based systems. This runs on the ARM11
604 apps processor of the MSM7K and depends on a shared memory
605 interface to the ARM9 modem processor which runs the baseband stack
606 and controls some vital subsystems (clock and power control, etc).
608 config ARCH_RPC
609 bool "RiscPC"
610 select ARCH_ACORN
611 select FIQ
612 select TIMER_ACORN
613 select ARCH_MAY_HAVE_PC_FDC
614 select HAVE_PATA_PLATFORM
615 select ISA_DMA_API
616 select NO_IOPORT
617 select ARCH_SPARSEMEM_ENABLE
618 help
619 On the Acorn Risc-PC, Linux can support the internal IDE disk and
620 CD-ROM interface, serial and parallel port, and the floppy drive.
622 config ARCH_SA1100
623 bool "SA1100-based"
624 select CPU_SA1100
625 select ISA
626 select ARCH_SPARSEMEM_ENABLE
627 select ARCH_MTD_XIP
628 select ARCH_HAS_CPUFREQ
629 select CPU_FREQ
630 select GENERIC_GPIO
631 select GENERIC_TIME
632 select GENERIC_CLOCKEVENTS
633 select HAVE_CLK
634 select TICK_ONESHOT
635 select ARCH_REQUIRE_GPIOLIB
636 help
637 Support for StrongARM 11x0 based boards.
639 config ARCH_S3C2410
640 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443"
641 select GENERIC_GPIO
642 select ARCH_HAS_CPUFREQ
643 select HAVE_CLK
644 help
645 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
646 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
647 the Samsung SMDK2410 development board (and derivatives).
649 config ARCH_S3C64XX
650 bool "Samsung S3C64XX"
651 select GENERIC_GPIO
652 select HAVE_CLK
653 select ARCH_HAS_CPUFREQ
654 help
655 Samsung S3C64XX series based systems
657 config ARCH_S5PC1XX
658 bool "Samsung S5PC1XX"
659 select GENERIC_GPIO
660 select HAVE_CLK
661 select CPU_V7
662 select ARM_L1_CACHE_SHIFT_6
663 help
664 Samsung S5PC1XX series based systems
666 config ARCH_SHARK
667 bool "Shark"
668 select CPU_SA110
669 select ISA
670 select ISA_DMA
671 select ZONE_DMA
672 select PCI
673 help
674 Support for the StrongARM based Digital DNARD machine, also known
675 as "Shark" (<http://www.shark-linux.de/shark.html>).
677 config ARCH_LH7A40X
678 bool "Sharp LH7A40X"
679 select CPU_ARM922T
680 select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM
681 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
682 help
683 Say Y here for systems based on one of the Sharp LH7A40X
684 System on a Chip processors. These CPUs include an ARM922T
685 core with a wide array of integrated devices for
686 hand-held and low-power applications.
688 config ARCH_U300
689 bool "ST-Ericsson U300 Series"
690 depends on MMU
691 select CPU_ARM926T
692 select HAVE_TCM
693 select ARM_AMBA
694 select ARM_VIC
695 select GENERIC_TIME
696 select GENERIC_CLOCKEVENTS
697 select HAVE_CLK
698 select COMMON_CLKDEV
699 select GENERIC_GPIO
700 help
701 Support for ST-Ericsson U300 series mobile platforms.
703 config ARCH_DAVINCI
704 bool "TI DaVinci"
705 select CPU_ARM926T
706 select GENERIC_TIME
707 select GENERIC_CLOCKEVENTS
708 select GENERIC_GPIO
709 select ARCH_REQUIRE_GPIOLIB
710 select HAVE_CLK
711 select ZONE_DMA
712 select HAVE_IDE
713 select COMMON_CLKDEV
714 select GENERIC_ALLOCATOR
715 select ARCH_HAS_HOLES_MEMORYMODEL
716 help
717 Support for TI's DaVinci platform.
719 config ARCH_OMAP
720 bool "TI OMAP"
721 select GENERIC_GPIO
722 select HAVE_CLK
723 select ARCH_REQUIRE_GPIOLIB
724 select ARCH_HAS_CPUFREQ
725 select GENERIC_TIME
726 select GENERIC_CLOCKEVENTS
727 select ARCH_HAS_HOLES_MEMORYMODEL
728 help
729 Support for TI's OMAP platform (OMAP1 and OMAP2).
731 config 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.
743 config ARCH_U8500
744 bool "ST-Ericsson U8500 Series"
745 select CPU_V7
746 select ARM_AMBA
747 select GENERIC_TIME
748 select GENERIC_CLOCKEVENTS
749 select COMMON_CLKDEV
750 help
751 Support for ST-Ericsson's Ux500 architecture
753 endchoice
755 source "arch/arm/mach-aaec2000/Kconfig"
757 source "arch/arm/mach-at91/Kconfig"
759 source "arch/arm/mach-bcmring/Kconfig"
761 source "arch/arm/mach-clps711x/Kconfig"
763 source "arch/arm/mach-davinci/Kconfig"
765 source "arch/arm/mach-dove/Kconfig"
767 source "arch/arm/mach-ep93xx/Kconfig"
769 source "arch/arm/mach-footbridge/Kconfig"
771 source "arch/arm/mach-gemini/Kconfig"
773 source "arch/arm/mach-h720x/Kconfig"
775 source "arch/arm/mach-integrator/Kconfig"
777 source "arch/arm/mach-iop32x/Kconfig"
779 source "arch/arm/mach-iop33x/Kconfig"
781 source "arch/arm/mach-iop13xx/Kconfig"
783 source "arch/arm/mach-ixp4xx/Kconfig"
785 source "arch/arm/mach-ixp2000/Kconfig"
787 source "arch/arm/mach-ixp23xx/Kconfig"
789 source "arch/arm/mach-kirkwood/Kconfig"
791 source "arch/arm/mach-ks8695/Kconfig"
793 source "arch/arm/mach-lh7a40x/Kconfig"
795 source "arch/arm/mach-loki/Kconfig"
797 source "arch/arm/mach-msm/Kconfig"
799 source "arch/arm/mach-mv78xx0/Kconfig"
801 source "arch/arm/plat-mxc/Kconfig"
803 source "arch/arm/mach-netx/Kconfig"
805 source "arch/arm/mach-nomadik/Kconfig"
806 source "arch/arm/plat-nomadik/Kconfig"
808 source "arch/arm/mach-ns9xxx/Kconfig"
810 source "arch/arm/mach-nuc93x/Kconfig"
812 source "arch/arm/plat-omap/Kconfig"
814 source "arch/arm/mach-omap1/Kconfig"
816 source "arch/arm/mach-omap2/Kconfig"
818 source "arch/arm/mach-orion5x/Kconfig"
820 source "arch/arm/mach-pxa/Kconfig"
821 source "arch/arm/plat-pxa/Kconfig"
823 source "arch/arm/mach-mmp/Kconfig"
825 source "arch/arm/mach-realview/Kconfig"
827 source "arch/arm/mach-sa1100/Kconfig"
829 source "arch/arm/plat-samsung/Kconfig"
830 source "arch/arm/plat-s3c24xx/Kconfig"
831 source "arch/arm/plat-s3c64xx/Kconfig"
832 source "arch/arm/plat-s3c/Kconfig"
833 source "arch/arm/plat-s5pc1xx/Kconfig"
835 if ARCH_S3C2410
836 source "arch/arm/mach-s3c2400/Kconfig"
837 source "arch/arm/mach-s3c2410/Kconfig"
838 source "arch/arm/mach-s3c2412/Kconfig"
839 source "arch/arm/mach-s3c2440/Kconfig"
840 source "arch/arm/mach-s3c2442/Kconfig"
841 source "arch/arm/mach-s3c2443/Kconfig"
842 endif
844 if ARCH_S3C64XX
845 source "arch/arm/mach-s3c6400/Kconfig"
846 source "arch/arm/mach-s3c6410/Kconfig"
847 endif
849 source "arch/arm/plat-stmp3xxx/Kconfig"
851 if ARCH_S5PC1XX
852 source "arch/arm/mach-s5pc100/Kconfig"
853 endif
855 source "arch/arm/mach-u300/Kconfig"
857 source "arch/arm/mach-ux500/Kconfig"
859 source "arch/arm/mach-versatile/Kconfig"
861 source "arch/arm/mach-w90x900/Kconfig"
863 # Definitions to make life easier
864 config ARCH_ACORN
865 bool
867 config PLAT_IOP
868 bool
869 select GENERIC_CLOCKEVENTS
870 select GENERIC_TIME
872 config PLAT_ORION
873 bool
875 config PLAT_PXA
876 bool
878 source arch/arm/mm/Kconfig
880 config IWMMXT
881 bool "Enable iWMMXt support"
882 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
883 default y if PXA27x || PXA3xx || ARCH_MMP
884 help
885 Enable support for iWMMXt context switching at run time if
886 running on a CPU that supports it.
888 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
889 config XSCALE_PMU
890 bool
891 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
892 default y
894 config CPU_HAS_PMU
895 depends on CPU_V6 || CPU_V7 || XSCALE_PMU
896 default y
897 bool
899 if !MMU
900 source "arch/arm/Kconfig-nommu"
901 endif
903 config ARM_ERRATA_411920
904 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
905 depends on CPU_V6 && !SMP
906 help
907 Invalidation of the Instruction Cache operation can
908 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
909 It does not affect the MPCore. This option enables the ARM Ltd.
910 recommended workaround.
912 config ARM_ERRATA_430973
913 bool "ARM errata: Stale prediction on replaced interworking branch"
914 depends on CPU_V7
915 help
916 This option enables the workaround for the 430973 Cortex-A8
917 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
918 interworking branch is replaced with another code sequence at the
919 same virtual address, whether due to self-modifying code or virtual
920 to physical address re-mapping, Cortex-A8 does not recover from the
921 stale interworking branch prediction. This results in Cortex-A8
922 executing the new code sequence in the incorrect ARM or Thumb state.
923 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
924 and also flushes the branch target cache at every context switch.
925 Note that setting specific bits in the ACTLR register may not be
926 available in non-secure mode.
928 config ARM_ERRATA_458693
929 bool "ARM errata: Processor deadlock when a false hazard is created"
930 depends on CPU_V7
931 help
932 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
933 erratum. For very specific sequences of memory operations, it is
934 possible for a hazard condition intended for a cache line to instead
935 be incorrectly associated with a different cache line. This false
936 hazard might then cause a processor deadlock. The workaround enables
937 the L1 caching of the NEON accesses and disables the PLD instruction
938 in the ACTLR register. Note that setting specific bits in the ACTLR
939 register may not be available in non-secure mode.
941 config ARM_ERRATA_460075
942 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
943 depends on CPU_V7
944 help
945 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
946 erratum. Any asynchronous access to the L2 cache may encounter a
947 situation in which recent store transactions to the L2 cache are lost
948 and overwritten with stale memory contents from external memory. The
949 workaround disables the write-allocate mode for the L2 cache via the
950 ACTLR register. Note that setting specific bits in the ACTLR register
951 may not be available in non-secure mode.
953 config PL310_ERRATA_588369
954 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
955 depends on CACHE_L2X0 && ARCH_OMAP4
956 help
957 The PL310 L2 cache controller implements three types of Clean &
958 Invalidate maintenance operations: by Physical Address
959 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
960 They are architecturally defined to behave as the execution of a
961 clean operation followed immediately by an invalidate operation,
962 both performing to the same memory location. This functionality
963 is not correctly implemented in PL310 as clean lines are not
964 invalidated as a result of these operations. Note that this errata
965 uses Texas Instrument's secure monitor api.
966 endmenu
968 source "arch/arm/common/Kconfig"
970 config FORCE_MAX_ZONEORDER
971 int
972 depends on SA1111
973 default "9"
975 menu "Bus support"
977 config ARM_AMBA
978 bool
980 config ISA
981 bool
982 help
983 Find out whether you have ISA slots on your motherboard. ISA is the
984 name of a bus system, i.e. the way the CPU talks to the other stuff
985 inside your box. Other bus systems are PCI, EISA, MicroChannel
986 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
987 newer boards don't support it. If you have ISA, say Y, otherwise N.
989 # Select ISA DMA controller support
990 config ISA_DMA
991 bool
992 select ISA_DMA_API
994 # Select ISA DMA interface
995 config ISA_DMA_API
996 bool
998 config PCI
999 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE
1000 help
1001 Find out whether you have a PCI motherboard. PCI is the name of a
1002 bus system, i.e. the way the CPU talks to the other stuff inside
1003 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1004 VESA. If you have PCI, say Y, otherwise N.
1006 config PCI_SYSCALL
1007 def_bool PCI
1009 # Select the host bridge type
1010 config PCI_HOST_VIA82C505
1011 bool
1012 depends on PCI && ARCH_SHARK
1013 default y
1015 config PCI_HOST_ITE8152
1016 bool
1017 depends on PCI && MACH_ARMCORE
1018 default y
1019 select DMABOUNCE
1021 source "drivers/pci/Kconfig"
1023 source "drivers/pcmcia/Kconfig"
1025 endmenu
1027 menu "Kernel Features"
1029 source "kernel/time/Kconfig"
1031 config SMP
1032 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1033 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1034 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1035 depends on GENERIC_CLOCKEVENTS
1036 select USE_GENERIC_SMP_HELPERS
1037 select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1038 help
1039 This enables support for systems with more than one CPU. If you have
1040 a system with only one CPU, like most personal computers, say N. If
1041 you have a system with more than one CPU, say Y.
1043 If you say N here, the kernel will run on single and multiprocessor
1044 machines, but will use only one CPU of a multiprocessor machine. If
1045 you say Y here, the kernel will run on many, but not all, single
1046 processor machines. On a single processor machine, the kernel will
1047 run faster if you say N here.
1049 See also <file:Documentation/i386/IO-APIC.txt>,
1050 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1051 <http://www.linuxdoc.org/docs.html#howto>.
1053 If you don't know what to do here, say N.
1055 config HAVE_ARM_SCU
1056 bool
1057 depends on SMP
1058 help
1059 This option enables support for the ARM system coherency unit
1061 config HAVE_ARM_TWD
1062 bool
1063 depends on SMP
1064 help
1065 This options enables support for the ARM timer and watchdog unit
1067 choice
1068 prompt "Memory split"
1069 default VMSPLIT_3G
1070 help
1071 Select the desired split between kernel and user memory.
1073 If you are not absolutely sure what you are doing, leave this
1074 option alone!
1076 config VMSPLIT_3G
1077 bool "3G/1G user/kernel split"
1078 config VMSPLIT_2G
1079 bool "2G/2G user/kernel split"
1080 config VMSPLIT_1G
1081 bool "1G/3G user/kernel split"
1082 endchoice
1084 config PAGE_OFFSET
1085 hex
1086 default 0x40000000 if VMSPLIT_1G
1087 default 0x80000000 if VMSPLIT_2G
1088 default 0xC0000000
1090 config NR_CPUS
1091 int "Maximum number of CPUs (2-32)"
1092 range 2 32
1093 depends on SMP
1094 default "4"
1096 config HOTPLUG_CPU
1097 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1098 depends on SMP && HOTPLUG && EXPERIMENTAL
1099 help
1100 Say Y here to experiment with turning CPUs off and on. CPUs
1101 can be controlled through /sys/devices/system/cpu.
1103 config LOCAL_TIMERS
1104 bool "Use local timer interrupts"
1105 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1106 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500)
1107 default y
1108 select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500)
1109 help
1110 Enable support for local timers on SMP platforms, rather then the
1111 legacy IPI broadcast method. Local timers allows the system
1112 accounting to be spread across the timer interval, preventing a
1113 "thundering herd" at every timer tick.
1115 source kernel/Kconfig.preempt
1117 config HZ
1118 int
1119 default 128 if ARCH_L7200
1120 default 200 if ARCH_EBSA110 || ARCH_S3C2410
1121 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1122 default AT91_TIMER_HZ if ARCH_AT91
1123 default 100
1125 config THUMB2_KERNEL
1126 bool "Compile the kernel in Thumb-2 mode"
1127 depends on CPU_V7 && EXPERIMENTAL
1128 select AEABI
1129 select ARM_ASM_UNIFIED
1130 help
1131 By enabling this option, the kernel will be compiled in
1132 Thumb-2 mode. A compiler/assembler that understand the unified
1133 ARM-Thumb syntax is needed.
1135 If unsure, say N.
1137 config ARM_ASM_UNIFIED
1138 bool
1140 config AEABI
1141 bool "Use the ARM EABI to compile the kernel"
1142 help
1143 This option allows for the kernel to be compiled using the latest
1144 ARM ABI (aka EABI). This is only useful if you are using a user
1145 space environment that is also compiled with EABI.
1147 Since there are major incompatibilities between the legacy ABI and
1148 EABI, especially with regard to structure member alignment, this
1149 option also changes the kernel syscall calling convention to
1150 disambiguate both ABIs and allow for backward compatibility support
1151 (selected with CONFIG_OABI_COMPAT).
1153 To use this you need GCC version 4.0.0 or later.
1155 config OABI_COMPAT
1156 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1157 depends on AEABI && EXPERIMENTAL
1158 default y
1159 help
1160 This option preserves the old syscall interface along with the
1161 new (ARM EABI) one. It also provides a compatibility layer to
1162 intercept syscalls that have structure arguments which layout
1163 in memory differs between the legacy ABI and the new ARM EABI
1164 (only for non "thumb" binaries). This option adds a tiny
1165 overhead to all syscalls and produces a slightly larger kernel.
1166 If you know you'll be using only pure EABI user space then you
1167 can say N here. If this option is not selected and you attempt
1168 to execute a legacy ABI binary then the result will be
1169 UNPREDICTABLE (in fact it can be predicted that it won't work
1170 at all). If in doubt say Y.
1172 config ARCH_HAS_HOLES_MEMORYMODEL
1173 bool
1175 # Discontigmem is deprecated
1176 config ARCH_DISCONTIGMEM_ENABLE
1177 bool
1179 config ARCH_SPARSEMEM_ENABLE
1180 bool
1182 config ARCH_SPARSEMEM_DEFAULT
1183 def_bool ARCH_SPARSEMEM_ENABLE
1185 config ARCH_SELECT_MEMORY_MODEL
1186 def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE
1188 config NODES_SHIFT
1189 int
1190 default "4" if ARCH_LH7A40X
1191 default "2"
1192 depends on NEED_MULTIPLE_NODES
1194 config HIGHMEM
1195 bool "High Memory Support (EXPERIMENTAL)"
1196 depends on MMU && EXPERIMENTAL
1197 help
1198 The address space of ARM processors is only 4 Gigabytes large
1199 and it has to accommodate user address space, kernel address
1200 space as well as some memory mapped IO. That means that, if you
1201 have a large amount of physical memory and/or IO, not all of the
1202 memory can be "permanently mapped" by the kernel. The physical
1203 memory that is not permanently mapped is called "high memory".
1205 Depending on the selected kernel/user memory split, minimum
1206 vmalloc space and actual amount of RAM, you may not need this
1207 option which should result in a slightly faster kernel.
1209 If unsure, say n.
1211 config HIGHPTE
1212 bool "Allocate 2nd-level pagetables from highmem"
1213 depends on HIGHMEM
1214 depends on !OUTER_CACHE
1216 config HW_PERF_EVENTS
1217 bool "Enable hardware performance counter support for perf events"
1218 depends on PERF_EVENTS && CPU_HAS_PMU && (CPU_V6 || CPU_V7)
1219 default y
1220 help
1221 Enable hardware performance counter support for perf events. If
1222 disabled, perf events will use software events only.
1224 source "mm/Kconfig"
1226 config LEDS
1227 bool "Timer and CPU usage LEDs"
1228 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1229 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1230 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1231 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1232 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1233 ARCH_AT91 || ARCH_DAVINCI || \
1234 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1235 help
1236 If you say Y here, the LEDs on your machine will be used
1237 to provide useful information about your current system status.
1239 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1240 be able to select which LEDs are active using the options below. If
1241 you are compiling a kernel for the EBSA-110 or the LART however, the
1242 red LED will simply flash regularly to indicate that the system is
1243 still functional. It is safe to say Y here if you have a CATS
1244 system, but the driver will do nothing.
1246 config LEDS_TIMER
1247 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1248 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1249 || MACH_OMAP_PERSEUS2
1250 depends on LEDS
1251 depends on !GENERIC_CLOCKEVENTS
1252 default y if ARCH_EBSA110
1253 help
1254 If you say Y here, one of the system LEDs (the green one on the
1255 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1256 will flash regularly to indicate that the system is still
1257 operational. This is mainly useful to kernel hackers who are
1258 debugging unstable kernels.
1260 The LART uses the same LED for both Timer LED and CPU usage LED
1261 functions. You may choose to use both, but the Timer LED function
1262 will overrule the CPU usage LED.
1264 config LEDS_CPU
1265 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1266 !ARCH_OMAP) \
1267 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1268 || MACH_OMAP_PERSEUS2
1269 depends on LEDS
1270 help
1271 If you say Y here, the red LED will be used to give a good real
1272 time indication of CPU usage, by lighting whenever the idle task
1273 is not currently executing.
1275 The LART uses the same LED for both Timer LED and CPU usage LED
1276 functions. You may choose to use both, but the Timer LED function
1277 will overrule the CPU usage LED.
1279 config ALIGNMENT_TRAP
1280 bool
1281 depends on CPU_CP15_MMU
1282 default y if !ARCH_EBSA110
1283 select HAVE_PROC_CPU if PROC_FS
1284 help
1285 ARM processors cannot fetch/store information which is not
1286 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1287 address divisible by 4. On 32-bit ARM processors, these non-aligned
1288 fetch/store instructions will be emulated in software if you say
1289 here, which has a severe performance impact. This is necessary for
1290 correct operation of some network protocols. With an IP-only
1291 configuration it is safe to say N, otherwise say Y.
1293 config UACCESS_WITH_MEMCPY
1294 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1295 depends on MMU && EXPERIMENTAL
1296 default y if CPU_FEROCEON
1297 help
1298 Implement faster copy_to_user and clear_user methods for CPU
1299 cores where a 8-word STM instruction give significantly higher
1300 memory write throughput than a sequence of individual 32bit stores.
1302 A possible side effect is a slight increase in scheduling latency
1303 between threads sharing the same address space if they invoke
1304 such copy operations with large buffers.
1306 However, if the CPU data cache is using a write-allocate mode,
1307 this option is unlikely to provide any performance gain.
1309 endmenu
1311 menu "Boot options"
1313 # Compressed boot loader in ROM. Yes, we really want to ask about
1314 # TEXT and BSS so we preserve their values in the config files.
1315 config ZBOOT_ROM_TEXT
1316 hex "Compressed ROM boot loader base address"
1317 default "0"
1318 help
1319 The physical address at which the ROM-able zImage is to be
1320 placed in the target. Platforms which normally make use of
1321 ROM-able zImage formats normally set this to a suitable
1322 value in their defconfig file.
1324 If ZBOOT_ROM is not enabled, this has no effect.
1326 config ZBOOT_ROM_BSS
1327 hex "Compressed ROM boot loader BSS address"
1328 default "0"
1329 help
1330 The base address of an area of read/write memory in the target
1331 for the ROM-able zImage which must be available while the
1332 decompressor is running. It must be large enough to hold the
1333 entire decompressed kernel plus an additional 128 KiB.
1334 Platforms which normally make use of ROM-able zImage formats
1335 normally set this to a suitable value in their defconfig file.
1337 If ZBOOT_ROM is not enabled, this has no effect.
1339 config ZBOOT_ROM
1340 bool "Compressed boot loader in ROM/flash"
1341 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1342 help
1343 Say Y here if you intend to execute your compressed kernel image
1344 (zImage) directly from ROM or flash. If unsure, say N.
1346 config CMDLINE
1347 string "Default kernel command string"
1348 default ""
1349 help
1350 On some architectures (EBSA110 and CATS), there is currently no way
1351 for the boot loader to pass arguments to the kernel. For these
1352 architectures, you should supply some command-line options at build
1353 time by entering them here. As a minimum, you should specify the
1354 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1356 config XIP_KERNEL
1357 bool "Kernel Execute-In-Place from ROM"
1358 depends on !ZBOOT_ROM
1359 help
1360 Execute-In-Place allows the kernel to run from non-volatile storage
1361 directly addressable by the CPU, such as NOR flash. This saves RAM
1362 space since the text section of the kernel is not loaded from flash
1363 to RAM. Read-write sections, such as the data section and stack,
1364 are still copied to RAM. The XIP kernel is not compressed since
1365 it has to run directly from flash, so it will take more space to
1366 store it. The flash address used to link the kernel object files,
1367 and for storing it, is configuration dependent. Therefore, if you
1368 say Y here, you must know the proper physical address where to
1369 store the kernel image depending on your own flash memory usage.
1371 Also note that the make target becomes "make xipImage" rather than
1372 "make zImage" or "make Image". The final kernel binary to put in
1373 ROM memory will be arch/arm/boot/xipImage.
1375 If unsure, say N.
1377 config XIP_PHYS_ADDR
1378 hex "XIP Kernel Physical Location"
1379 depends on XIP_KERNEL
1380 default "0x00080000"
1381 help
1382 This is the physical address in your flash memory the kernel will
1383 be linked for and stored to. This address is dependent on your
1384 own flash usage.
1386 config KEXEC
1387 bool "Kexec system call (EXPERIMENTAL)"
1388 depends on EXPERIMENTAL
1389 help
1390 kexec is a system call that implements the ability to shutdown your
1391 current kernel, and to start another kernel. It is like a reboot
1392 but it is independent of the system firmware. And like a reboot
1393 you can start any kernel with it, not just Linux.
1395 It is an ongoing process to be certain the hardware in a machine
1396 is properly shutdown, so do not be surprised if this code does not
1397 initially work for you. It may help to enable device hotplugging
1398 support.
1400 config ATAGS_PROC
1401 bool "Export atags in procfs"
1402 depends on KEXEC
1403 default y
1404 help
1405 Should the atags used to boot the kernel be exported in an "atags"
1406 file in procfs. Useful with kexec.
1408 endmenu
1410 menu "CPU Power Management"
1412 if ARCH_HAS_CPUFREQ
1414 source "drivers/cpufreq/Kconfig"
1416 config CPU_FREQ_SA1100
1417 bool
1419 config CPU_FREQ_SA1110
1420 bool
1422 config CPU_FREQ_INTEGRATOR
1423 tristate "CPUfreq driver for ARM Integrator CPUs"
1424 depends on ARCH_INTEGRATOR && CPU_FREQ
1425 default y
1426 help
1427 This enables the CPUfreq driver for ARM Integrator CPUs.
1429 For details, take a look at <file:Documentation/cpu-freq>.
1431 If in doubt, say Y.
1433 config CPU_FREQ_PXA
1434 bool
1435 depends on CPU_FREQ && ARCH_PXA && PXA25x
1436 default y
1437 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1439 config CPU_FREQ_S3C64XX
1440 bool "CPUfreq support for Samsung S3C64XX CPUs"
1441 depends on CPU_FREQ && CPU_S3C6410
1443 config CPU_FREQ_S3C
1444 bool
1445 help
1446 Internal configuration node for common cpufreq on Samsung SoC
1448 config CPU_FREQ_S3C24XX
1449 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1450 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1451 select CPU_FREQ_S3C
1452 help
1453 This enables the CPUfreq driver for the Samsung S3C24XX family
1454 of CPUs.
1456 For details, take a look at <file:Documentation/cpu-freq>.
1458 If in doubt, say N.
1460 config CPU_FREQ_S3C24XX_PLL
1461 bool "Support CPUfreq changing of PLL frequency"
1462 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1463 help
1464 Compile in support for changing the PLL frequency from the
1465 S3C24XX series CPUfreq driver. The PLL takes time to settle
1466 after a frequency change, so by default it is not enabled.
1468 This also means that the PLL tables for the selected CPU(s) will
1469 be built which may increase the size of the kernel image.
1471 config CPU_FREQ_S3C24XX_DEBUG
1472 bool "Debug CPUfreq Samsung driver core"
1473 depends on CPU_FREQ_S3C24XX
1474 help
1475 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1477 config CPU_FREQ_S3C24XX_IODEBUG
1478 bool "Debug CPUfreq Samsung driver IO timing"
1479 depends on CPU_FREQ_S3C24XX
1480 help
1481 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1483 config CPU_FREQ_S3C24XX_DEBUGFS
1484 bool "Export debugfs for CPUFreq"
1485 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1486 help
1487 Export status information via debugfs.
1489 endif
1491 source "drivers/cpuidle/Kconfig"
1493 endmenu
1495 menu "Floating point emulation"
1497 comment "At least one emulation must be selected"
1499 config FPE_NWFPE
1500 bool "NWFPE math emulation"
1501 depends on !AEABI || OABI_COMPAT
1502 ---help---
1503 Say Y to include the NWFPE floating point emulator in the kernel.
1504 This is necessary to run most binaries. Linux does not currently
1505 support floating point hardware so you need to say Y here even if
1506 your machine has an FPA or floating point co-processor podule.
1508 You may say N here if you are going to load the Acorn FPEmulator
1509 early in the bootup.
1511 config FPE_NWFPE_XP
1512 bool "Support extended precision"
1513 depends on FPE_NWFPE
1514 help
1515 Say Y to include 80-bit support in the kernel floating-point
1516 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1517 Note that gcc does not generate 80-bit operations by default,
1518 so in most cases this option only enlarges the size of the
1519 floating point emulator without any good reason.
1521 You almost surely want to say N here.
1523 config FPE_FASTFPE
1524 bool "FastFPE math emulation (EXPERIMENTAL)"
1525 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1526 ---help---
1527 Say Y here to include the FAST floating point emulator in the kernel.
1528 This is an experimental much faster emulator which now also has full
1529 precision for the mantissa. It does not support any exceptions.
1530 It is very simple, and approximately 3-6 times faster than NWFPE.
1532 It should be sufficient for most programs. It may be not suitable
1533 for scientific calculations, but you have to check this for yourself.
1534 If you do not feel you need a faster FP emulation you should better
1535 choose NWFPE.
1537 config VFP
1538 bool "VFP-format floating point maths"
1539 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1540 help
1541 Say Y to include VFP support code in the kernel. This is needed
1542 if your hardware includes a VFP unit.
1544 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1545 release notes and additional status information.
1547 Say N if your target does not have VFP hardware.
1549 config VFPv3
1550 bool
1551 depends on VFP
1552 default y if CPU_V7
1554 config NEON
1555 bool "Advanced SIMD (NEON) Extension support"
1556 depends on VFPv3 && CPU_V7
1557 help
1558 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1559 Extension.
1561 endmenu
1563 menu "Userspace binary formats"
1565 source "fs/Kconfig.binfmt"
1567 config ARTHUR
1568 tristate "RISC OS personality"
1569 depends on !AEABI
1570 help
1571 Say Y here to include the kernel code necessary if you want to run
1572 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1573 experimental; if this sounds frightening, say N and sleep in peace.
1574 You can also say M here to compile this support as a module (which
1575 will be called arthur).
1577 endmenu
1579 menu "Power management options"
1581 source "kernel/power/Kconfig"
1583 config ARCH_SUSPEND_POSSIBLE
1584 def_bool y
1586 endmenu
1588 source "net/Kconfig"
1590 source "drivers/Kconfig"
1592 source "fs/Kconfig"
1594 source "arch/arm/Kconfig.debug"
1596 source "security/Kconfig"
1598 source "crypto/Kconfig"
1600 source "lib/Kconfig"