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Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / Kconfig
1 #
2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
4 #
5
6 mainmenu "Linux Kernel Configuration"
7
8 config ARM
9 bool
10 default y
11 select HAVE_AOUT
12 select HAVE_IDE
13 select HAVE_MEMBLOCK
14 select RTC_LIB
15 select SYS_SUPPORTS_APM_EMULATION
16 select GENERIC_ATOMIC64 if (!CPU_32v6K)
17 select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
18 select HAVE_ARCH_KGDB
19 select HAVE_KPROBES if (!XIP_KERNEL)
20 select HAVE_KRETPROBES if (HAVE_KPROBES)
21 select HAVE_FUNCTION_TRACER if (!XIP_KERNEL)
22 select HAVE_GENERIC_DMA_COHERENT
23 select HAVE_KERNEL_GZIP
24 select HAVE_KERNEL_LZO
25 select HAVE_KERNEL_LZMA
26 select HAVE_PERF_EVENTS
27 select PERF_USE_VMALLOC
28 select HAVE_REGS_AND_STACK_ACCESS_API
29 help
30 The ARM series is a line of low-power-consumption RISC chip designs
31 licensed by ARM Ltd and targeted at embedded applications and
32 handhelds such as the Compaq IPAQ. ARM-based PCs are no longer
33 manufactured, but legacy ARM-based PC hardware remains popular in
34 Europe. There is an ARM Linux project with a web page at
35 <http://www.arm.linux.org.uk/>.
36
37 config HAVE_PWM
38 bool
39
40 config SYS_SUPPORTS_APM_EMULATION
41 bool
42
43 config GENERIC_GPIO
44 bool
45
46 config ARCH_USES_GETTIMEOFFSET
47 bool
48 default n
49
50 config GENERIC_CLOCKEVENTS
51 bool
52
53 config GENERIC_CLOCKEVENTS_BROADCAST
54 bool
55 depends on GENERIC_CLOCKEVENTS
56 default y if SMP
57
58 config HAVE_TCM
59 bool
60 select GENERIC_ALLOCATOR
61
62 config HAVE_PROC_CPU
63 bool
64
65 config NO_IOPORT
66 bool
67
68 config EISA
69 bool
70 ---help---
71 The Extended Industry Standard Architecture (EISA) bus was
72 developed as an open alternative to the IBM MicroChannel bus.
73
74 The EISA bus provided some of the features of the IBM MicroChannel
75 bus while maintaining backward compatibility with cards made for
76 the older ISA bus. The EISA bus saw limited use between 1988 and
77 1995 when it was made obsolete by the PCI bus.
78
79 Say Y here if you are building a kernel for an EISA-based machine.
80
81 Otherwise, say N.
82
83 config SBUS
84 bool
85
86 config MCA
87 bool
88 help
89 MicroChannel Architecture is found in some IBM PS/2 machines and
90 laptops. It is a bus system similar to PCI or ISA. See
91 <file:Documentation/mca.txt> (and especially the web page given
92 there) before attempting to build an MCA bus kernel.
93
94 config GENERIC_HARDIRQS
95 bool
96 default y
97
98 config STACKTRACE_SUPPORT
99 bool
100 default y
101
102 config HAVE_LATENCYTOP_SUPPORT
103 bool
104 depends on !SMP
105 default y
106
107 config LOCKDEP_SUPPORT
108 bool
109 default y
110
111 config TRACE_IRQFLAGS_SUPPORT
112 bool
113 default y
114
115 config HARDIRQS_SW_RESEND
116 bool
117 default y
118
119 config GENERIC_IRQ_PROBE
120 bool
121 default y
122
123 config GENERIC_LOCKBREAK
124 bool
125 default y
126 depends on SMP && PREEMPT
127
128 config RWSEM_GENERIC_SPINLOCK
129 bool
130 default y
131
132 config RWSEM_XCHGADD_ALGORITHM
133 bool
134
135 config ARCH_HAS_ILOG2_U32
136 bool
137
138 config ARCH_HAS_ILOG2_U64
139 bool
140
141 config ARCH_HAS_CPUFREQ
142 bool
143 help
144 Internal node to signify that the ARCH has CPUFREQ support
145 and that the relevant menu configurations are displayed for
146 it.
147
148 config GENERIC_HWEIGHT
149 bool
150 default y
151
152 config GENERIC_CALIBRATE_DELAY
153 bool
154 default y
155
156 config ARCH_MAY_HAVE_PC_FDC
157 bool
158
159 config ZONE_DMA
160 bool
161
162 config NEED_DMA_MAP_STATE
163 def_bool y
164
165 config GENERIC_ISA_DMA
166 bool
167
168 config FIQ
169 bool
170
171 config ARCH_MTD_XIP
172 bool
173
174 config GENERIC_HARDIRQS_NO__DO_IRQ
175 def_bool y
176
177 config ARM_L1_CACHE_SHIFT_6
178 bool
179 help
180 Setting ARM L1 cache line size to 64 Bytes.
181
182 config VECTORS_BASE
183 hex
184 default 0xffff0000 if MMU || CPU_HIGH_VECTOR
185 default DRAM_BASE if REMAP_VECTORS_TO_RAM
186 default 0x00000000
187 help
188 The base address of exception vectors.
189
190 source "init/Kconfig"
191
192 source "kernel/Kconfig.freezer"
193
194 menu "System Type"
195
196 config MMU
197 bool "MMU-based Paged Memory Management Support"
198 default y
199 help
200 Select if you want MMU-based virtualised addressing space
201 support by paged memory management. If unsure, say 'Y'.
202
203 #
204 # The "ARM system type" choice list is ordered alphabetically by option
205 # text. Please add new entries in the option alphabetic order.
206 #
207 choice
208 prompt "ARM system type"
209 default ARCH_VERSATILE
210
211 config ARCH_AAEC2000
212 bool "Agilent AAEC-2000 based"
213 select CPU_ARM920T
214 select ARM_AMBA
215 select HAVE_CLK
216 select ARCH_USES_GETTIMEOFFSET
217 help
218 This enables support for systems based on the Agilent AAEC-2000
219
220 config ARCH_INTEGRATOR
221 bool "ARM Ltd. Integrator family"
222 select ARM_AMBA
223 select ARCH_HAS_CPUFREQ
224 select COMMON_CLKDEV
225 select ICST
226 select GENERIC_CLOCKEVENTS
227 select PLAT_VERSATILE
228 help
229 Support for ARM's Integrator platform.
230
231 config ARCH_REALVIEW
232 bool "ARM Ltd. RealView family"
233 select ARM_AMBA
234 select COMMON_CLKDEV
235 select ICST
236 select GENERIC_CLOCKEVENTS
237 select ARCH_WANT_OPTIONAL_GPIOLIB
238 select PLAT_VERSATILE
239 select ARM_TIMER_SP804
240 select GPIO_PL061 if GPIOLIB
241 help
242 This enables support for ARM Ltd RealView boards.
243
244 config ARCH_VERSATILE
245 bool "ARM Ltd. Versatile family"
246 select ARM_AMBA
247 select ARM_VIC
248 select COMMON_CLKDEV
249 select ICST
250 select GENERIC_CLOCKEVENTS
251 select ARCH_WANT_OPTIONAL_GPIOLIB
252 select PLAT_VERSATILE
253 select ARM_TIMER_SP804
254 help
255 This enables support for ARM Ltd Versatile board.
256
257 config ARCH_VEXPRESS
258 bool "ARM Ltd. Versatile Express family"
259 select ARCH_WANT_OPTIONAL_GPIOLIB
260 select ARM_AMBA
261 select ARM_TIMER_SP804
262 select COMMON_CLKDEV
263 select GENERIC_CLOCKEVENTS
264 select HAVE_CLK
265 select ICST
266 select PLAT_VERSATILE
267 help
268 This enables support for the ARM Ltd Versatile Express boards.
269
270 config ARCH_AT91
271 bool "Atmel AT91"
272 select ARCH_REQUIRE_GPIOLIB
273 select HAVE_CLK
274 select ARCH_USES_GETTIMEOFFSET
275 help
276 This enables support for systems based on the Atmel AT91RM9200,
277 AT91SAM9 and AT91CAP9 processors.
278
279 config ARCH_BCMRING
280 bool "Broadcom BCMRING"
281 depends on MMU
282 select CPU_V6
283 select ARM_AMBA
284 select COMMON_CLKDEV
285 select GENERIC_CLOCKEVENTS
286 select ARCH_WANT_OPTIONAL_GPIOLIB
287 help
288 Support for Broadcom's BCMRing platform.
289
290 config ARCH_CLPS711X
291 bool "Cirrus Logic CLPS711x/EP721x-based"
292 select CPU_ARM720T
293 select ARCH_USES_GETTIMEOFFSET
294 help
295 Support for Cirrus Logic 711x/721x based boards.
296
297 config ARCH_CNS3XXX
298 bool "Cavium Networks CNS3XXX family"
299 select CPU_V6
300 select GENERIC_CLOCKEVENTS
301 select ARM_GIC
302 select PCI_DOMAINS if PCI
303 help
304 Support for Cavium Networks CNS3XXX platform.
305
306 config ARCH_GEMINI
307 bool "Cortina Systems Gemini"
308 select CPU_FA526
309 select ARCH_REQUIRE_GPIOLIB
310 select ARCH_USES_GETTIMEOFFSET
311 help
312 Support for the Cortina Systems Gemini family SoCs
313
314 config ARCH_EBSA110
315 bool "EBSA-110"
316 select CPU_SA110
317 select ISA
318 select NO_IOPORT
319 select ARCH_USES_GETTIMEOFFSET
320 help
321 This is an evaluation board for the StrongARM processor available
322 from Digital. It has limited hardware on-board, including an
323 Ethernet interface, two PCMCIA sockets, two serial ports and a
324 parallel port.
325
326 config ARCH_EP93XX
327 bool "EP93xx-based"
328 select CPU_ARM920T
329 select ARM_AMBA
330 select ARM_VIC
331 select COMMON_CLKDEV
332 select ARCH_REQUIRE_GPIOLIB
333 select ARCH_HAS_HOLES_MEMORYMODEL
334 select ARCH_USES_GETTIMEOFFSET
335 help
336 This enables support for the Cirrus EP93xx series of CPUs.
337
338 config ARCH_FOOTBRIDGE
339 bool "FootBridge"
340 select CPU_SA110
341 select FOOTBRIDGE
342 select ARCH_USES_GETTIMEOFFSET
343 help
344 Support for systems based on the DC21285 companion chip
345 ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
346
347 config ARCH_MXC
348 bool "Freescale MXC/iMX-based"
349 select GENERIC_CLOCKEVENTS
350 select ARCH_REQUIRE_GPIOLIB
351 select COMMON_CLKDEV
352 help
353 Support for Freescale MXC/iMX-based family of processors
354
355 config ARCH_STMP3XXX
356 bool "Freescale STMP3xxx"
357 select CPU_ARM926T
358 select COMMON_CLKDEV
359 select ARCH_REQUIRE_GPIOLIB
360 select GENERIC_CLOCKEVENTS
361 select USB_ARCH_HAS_EHCI
362 help
363 Support for systems based on the Freescale 3xxx CPUs.
364
365 config ARCH_NETX
366 bool "Hilscher NetX based"
367 select CPU_ARM926T
368 select ARM_VIC
369 select GENERIC_CLOCKEVENTS
370 help
371 This enables support for systems based on the Hilscher NetX Soc
372
373 config ARCH_H720X
374 bool "Hynix HMS720x-based"
375 select CPU_ARM720T
376 select ISA_DMA_API
377 select ARCH_USES_GETTIMEOFFSET
378 help
379 This enables support for systems based on the Hynix HMS720x
380
381 config ARCH_IOP13XX
382 bool "IOP13xx-based"
383 depends on MMU
384 select CPU_XSC3
385 select PLAT_IOP
386 select PCI
387 select ARCH_SUPPORTS_MSI
388 select VMSPLIT_1G
389 help
390 Support for Intel's IOP13XX (XScale) family of processors.
391
392 config ARCH_IOP32X
393 bool "IOP32x-based"
394 depends on MMU
395 select CPU_XSCALE
396 select PLAT_IOP
397 select PCI
398 select ARCH_REQUIRE_GPIOLIB
399 help
400 Support for Intel's 80219 and IOP32X (XScale) family of
401 processors.
402
403 config ARCH_IOP33X
404 bool "IOP33x-based"
405 depends on MMU
406 select CPU_XSCALE
407 select PLAT_IOP
408 select PCI
409 select ARCH_REQUIRE_GPIOLIB
410 help
411 Support for Intel's IOP33X (XScale) family of processors.
412
413 config ARCH_IXP23XX
414 bool "IXP23XX-based"
415 depends on MMU
416 select CPU_XSC3
417 select PCI
418 select ARCH_USES_GETTIMEOFFSET
419 help
420 Support for Intel's IXP23xx (XScale) family of processors.
421
422 config ARCH_IXP2000
423 bool "IXP2400/2800-based"
424 depends on MMU
425 select CPU_XSCALE
426 select PCI
427 select ARCH_USES_GETTIMEOFFSET
428 help
429 Support for Intel's IXP2400/2800 (XScale) family of processors.
430
431 config ARCH_IXP4XX
432 bool "IXP4xx-based"
433 depends on MMU
434 select CPU_XSCALE
435 select GENERIC_GPIO
436 select GENERIC_CLOCKEVENTS
437 select DMABOUNCE if PCI
438 help
439 Support for Intel's IXP4XX (XScale) family of processors.
440
441 config ARCH_DOVE
442 bool "Marvell Dove"
443 select PCI
444 select ARCH_REQUIRE_GPIOLIB
445 select GENERIC_CLOCKEVENTS
446 select PLAT_ORION
447 help
448 Support for the Marvell Dove SoC 88AP510
449
450 config ARCH_KIRKWOOD
451 bool "Marvell Kirkwood"
452 select CPU_FEROCEON
453 select PCI
454 select ARCH_REQUIRE_GPIOLIB
455 select GENERIC_CLOCKEVENTS
456 select PLAT_ORION
457 help
458 Support for the following Marvell Kirkwood series SoCs:
459 88F6180, 88F6192 and 88F6281.
460
461 config ARCH_LOKI
462 bool "Marvell Loki (88RC8480)"
463 select CPU_FEROCEON
464 select GENERIC_CLOCKEVENTS
465 select PLAT_ORION
466 help
467 Support for the Marvell Loki (88RC8480) SoC.
468
469 config ARCH_LPC32XX
470 bool "NXP LPC32XX"
471 select CPU_ARM926T
472 select ARCH_REQUIRE_GPIOLIB
473 select HAVE_IDE
474 select ARM_AMBA
475 select USB_ARCH_HAS_OHCI
476 select COMMON_CLKDEV
477 select GENERIC_TIME
478 select GENERIC_CLOCKEVENTS
479 help
480 Support for the NXP LPC32XX family of processors
481
482 config ARCH_MV78XX0
483 bool "Marvell MV78xx0"
484 select CPU_FEROCEON
485 select PCI
486 select ARCH_REQUIRE_GPIOLIB
487 select GENERIC_CLOCKEVENTS
488 select PLAT_ORION
489 help
490 Support for the following Marvell MV78xx0 series SoCs:
491 MV781x0, MV782x0.
492
493 config ARCH_ORION5X
494 bool "Marvell Orion"
495 depends on MMU
496 select CPU_FEROCEON
497 select PCI
498 select ARCH_REQUIRE_GPIOLIB
499 select GENERIC_CLOCKEVENTS
500 select PLAT_ORION
501 help
502 Support for the following Marvell Orion 5x series SoCs:
503 Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182),
504 Orion-2 (5281), Orion-1-90 (6183).
505
506 config ARCH_MMP
507 bool "Marvell PXA168/910/MMP2"
508 depends on MMU
509 select ARCH_REQUIRE_GPIOLIB
510 select COMMON_CLKDEV
511 select GENERIC_CLOCKEVENTS
512 select TICK_ONESHOT
513 select PLAT_PXA
514 help
515 Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line.
516
517 config ARCH_KS8695
518 bool "Micrel/Kendin KS8695"
519 select CPU_ARM922T
520 select ARCH_REQUIRE_GPIOLIB
521 select ARCH_USES_GETTIMEOFFSET
522 help
523 Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based
524 System-on-Chip devices.
525
526 config ARCH_NS9XXX
527 bool "NetSilicon NS9xxx"
528 select CPU_ARM926T
529 select GENERIC_GPIO
530 select GENERIC_CLOCKEVENTS
531 select HAVE_CLK
532 help
533 Say Y here if you intend to run this kernel on a NetSilicon NS9xxx
534 System.
535
536 <http://www.digi.com/products/microprocessors/index.jsp>
537
538 config ARCH_W90X900
539 bool "Nuvoton W90X900 CPU"
540 select CPU_ARM926T
541 select ARCH_REQUIRE_GPIOLIB
542 select COMMON_CLKDEV
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
553 config ARCH_NUC93X
554 bool "Nuvoton NUC93X CPU"
555 select CPU_ARM926T
556 select COMMON_CLKDEV
557 help
558 Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
559 low-power and high performance MPEG-4/JPEG multimedia controller chip.
560
561 config ARCH_TEGRA
562 bool "NVIDIA Tegra"
563 select GENERIC_TIME
564 select GENERIC_CLOCKEVENTS
565 select GENERIC_GPIO
566 select HAVE_CLK
567 select COMMON_CLKDEV
568 select ARCH_HAS_BARRIERS if CACHE_L2X0
569 help
570 This enables support for NVIDIA Tegra based systems (Tegra APX,
571 Tegra 6xx and Tegra 2 series).
572
573 config ARCH_PNX4008
574 bool "Philips Nexperia PNX4008 Mobile"
575 select CPU_ARM926T
576 select COMMON_CLKDEV
577 select ARCH_USES_GETTIMEOFFSET
578 help
579 This enables support for Philips PNX4008 mobile platform.
580
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 COMMON_CLKDEV
587 select ARCH_REQUIRE_GPIOLIB
588 select GENERIC_CLOCKEVENTS
589 select TICK_ONESHOT
590 select PLAT_PXA
591 help
592 Support for Intel/Marvell's PXA2xx/PXA3xx processor line.
593
594 config ARCH_MSM
595 bool "Qualcomm MSM"
596 select HAVE_CLK
597 select GENERIC_CLOCKEVENTS
598 select ARCH_REQUIRE_GPIOLIB
599 help
600 Support for Qualcomm MSM/QSD based systems. This runs on the
601 apps processor of the MSM/QSD and depends on a shared memory
602 interface to the modem processor which runs the baseband
603 stack and controls some vital subsystems
604 (clock and power control, etc).
605
606 config ARCH_SHMOBILE
607 bool "Renesas SH-Mobile"
608 help
609 Support for Renesas's SH-Mobile ARM platforms
610
611 config ARCH_RPC
612 bool "RiscPC"
613 select ARCH_ACORN
614 select FIQ
615 select TIMER_ACORN
616 select ARCH_MAY_HAVE_PC_FDC
617 select HAVE_PATA_PLATFORM
618 select ISA_DMA_API
619 select NO_IOPORT
620 select ARCH_SPARSEMEM_ENABLE
621 select ARCH_USES_GETTIMEOFFSET
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
626 config 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 CPU_FREQ
634 select GENERIC_CLOCKEVENTS
635 select HAVE_CLK
636 select TICK_ONESHOT
637 select ARCH_REQUIRE_GPIOLIB
638 help
639 Support for StrongARM 11x0 based boards.
640
641 config ARCH_S3C2410
642 bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450"
643 select GENERIC_GPIO
644 select ARCH_HAS_CPUFREQ
645 select HAVE_CLK
646 select ARCH_USES_GETTIMEOFFSET
647 select HAVE_S3C2410_I2C
648 help
649 Samsung S3C2410X CPU based systems, such as the Simtec Electronics
650 BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or
651 the Samsung SMDK2410 development board (and derivatives).
652
653 Note, the S3C2416 and the S3C2450 are so close that they even share
654 the same SoC ID code. This means that there is no seperate machine
655 directory (no arch/arm/mach-s3c2450) as the S3C2416 was first.
656
657 config ARCH_S3C64XX
658 bool "Samsung S3C64XX"
659 select PLAT_SAMSUNG
660 select CPU_V6
661 select ARM_VIC
662 select HAVE_CLK
663 select NO_IOPORT
664 select ARCH_USES_GETTIMEOFFSET
665 select ARCH_HAS_CPUFREQ
666 select ARCH_REQUIRE_GPIOLIB
667 select SAMSUNG_CLKSRC
668 select SAMSUNG_IRQ_VIC_TIMER
669 select SAMSUNG_IRQ_UART
670 select S3C_GPIO_TRACK
671 select S3C_GPIO_PULL_UPDOWN
672 select S3C_GPIO_CFG_S3C24XX
673 select S3C_GPIO_CFG_S3C64XX
674 select S3C_DEV_NAND
675 select USB_ARCH_HAS_OHCI
676 select SAMSUNG_GPIOLIB_4BIT
677 select HAVE_S3C2410_I2C
678 select HAVE_S3C2410_WATCHDOG
679 help
680 Samsung S3C64XX series based systems
681
682 config ARCH_S5P6440
683 bool "Samsung S5P6440"
684 select CPU_V6
685 select GENERIC_GPIO
686 select HAVE_CLK
687 select HAVE_S3C2410_WATCHDOG
688 select ARCH_USES_GETTIMEOFFSET
689 select HAVE_S3C2410_I2C
690 select HAVE_S3C_RTC
691 help
692 Samsung S5P6440 CPU based systems
693
694 config ARCH_S5P6442
695 bool "Samsung S5P6442"
696 select CPU_V6
697 select GENERIC_GPIO
698 select HAVE_CLK
699 select ARCH_USES_GETTIMEOFFSET
700 select HAVE_S3C2410_WATCHDOG
701 help
702 Samsung S5P6442 CPU based systems
703
704 config ARCH_S5PC100
705 bool "Samsung S5PC100"
706 select GENERIC_GPIO
707 select HAVE_CLK
708 select CPU_V7
709 select ARM_L1_CACHE_SHIFT_6
710 select ARCH_USES_GETTIMEOFFSET
711 select HAVE_S3C2410_I2C
712 select HAVE_S3C_RTC
713 select HAVE_S3C2410_WATCHDOG
714 help
715 Samsung S5PC100 series based systems
716
717 config ARCH_S5PV210
718 bool "Samsung S5PV210/S5PC110"
719 select CPU_V7
720 select GENERIC_GPIO
721 select HAVE_CLK
722 select ARM_L1_CACHE_SHIFT_6
723 select ARCH_USES_GETTIMEOFFSET
724 select HAVE_S3C2410_I2C
725 select HAVE_S3C_RTC
726 select HAVE_S3C2410_WATCHDOG
727 help
728 Samsung S5PV210/S5PC110 series based systems
729
730 config ARCH_S5PV310
731 bool "Samsung S5PV310/S5PC210"
732 select CPU_V7
733 select GENERIC_GPIO
734 select HAVE_CLK
735 select GENERIC_CLOCKEVENTS
736 help
737 Samsung S5PV310 series based systems
738
739 config ARCH_SHARK
740 bool "Shark"
741 select CPU_SA110
742 select ISA
743 select ISA_DMA
744 select ZONE_DMA
745 select PCI
746 select ARCH_USES_GETTIMEOFFSET
747 help
748 Support for the StrongARM based Digital DNARD machine, also known
749 as "Shark" (<http://www.shark-linux.de/shark.html>).
750
751 config ARCH_LH7A40X
752 bool "Sharp LH7A40X"
753 select CPU_ARM922T
754 select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM
755 select ARCH_USES_GETTIMEOFFSET
756 help
757 Say Y here for systems based on one of the Sharp LH7A40X
758 System on a Chip processors. These CPUs include an ARM922T
759 core with a wide array of integrated devices for
760 hand-held and low-power applications.
761
762 config ARCH_U300
763 bool "ST-Ericsson U300 Series"
764 depends on MMU
765 select CPU_ARM926T
766 select HAVE_TCM
767 select ARM_AMBA
768 select ARM_VIC
769 select GENERIC_CLOCKEVENTS
770 select COMMON_CLKDEV
771 select GENERIC_GPIO
772 help
773 Support for ST-Ericsson U300 series mobile platforms.
774
775 config ARCH_U8500
776 bool "ST-Ericsson U8500 Series"
777 select CPU_V7
778 select ARM_AMBA
779 select GENERIC_CLOCKEVENTS
780 select COMMON_CLKDEV
781 select ARCH_REQUIRE_GPIOLIB
782 help
783 Support for ST-Ericsson's Ux500 architecture
784
785 config ARCH_NOMADIK
786 bool "STMicroelectronics Nomadik"
787 select ARM_AMBA
788 select ARM_VIC
789 select CPU_ARM926T
790 select COMMON_CLKDEV
791 select GENERIC_CLOCKEVENTS
792 select ARCH_REQUIRE_GPIOLIB
793 help
794 Support for the Nomadik platform by ST-Ericsson
795
796 config ARCH_DAVINCI
797 bool "TI DaVinci"
798 select GENERIC_CLOCKEVENTS
799 select ARCH_REQUIRE_GPIOLIB
800 select ZONE_DMA
801 select HAVE_IDE
802 select COMMON_CLKDEV
803 select GENERIC_ALLOCATOR
804 select ARCH_HAS_HOLES_MEMORYMODEL
805 help
806 Support for TI's DaVinci platform.
807
808 config ARCH_OMAP
809 bool "TI OMAP"
810 select HAVE_CLK
811 select ARCH_REQUIRE_GPIOLIB
812 select ARCH_HAS_CPUFREQ
813 select GENERIC_CLOCKEVENTS
814 select ARCH_HAS_HOLES_MEMORYMODEL
815 help
816 Support for TI's OMAP platform (OMAP1 and OMAP2).
817
818 config PLAT_SPEAR
819 bool "ST SPEAr"
820 select ARM_AMBA
821 select ARCH_REQUIRE_GPIOLIB
822 select COMMON_CLKDEV
823 select GENERIC_CLOCKEVENTS
824 select HAVE_CLK
825 help
826 Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx).
827
828 endchoice
829
830 #
831 # This is sorted alphabetically by mach-* pathname. However, plat-*
832 # Kconfigs may be included either alphabetically (according to the
833 # plat- suffix) or along side the corresponding mach-* source.
834 #
835 source "arch/arm/mach-aaec2000/Kconfig"
836
837 source "arch/arm/mach-at91/Kconfig"
838
839 source "arch/arm/mach-bcmring/Kconfig"
840
841 source "arch/arm/mach-clps711x/Kconfig"
842
843 source "arch/arm/mach-cns3xxx/Kconfig"
844
845 source "arch/arm/mach-davinci/Kconfig"
846
847 source "arch/arm/mach-dove/Kconfig"
848
849 source "arch/arm/mach-ep93xx/Kconfig"
850
851 source "arch/arm/mach-footbridge/Kconfig"
852
853 source "arch/arm/mach-gemini/Kconfig"
854
855 source "arch/arm/mach-h720x/Kconfig"
856
857 source "arch/arm/mach-integrator/Kconfig"
858
859 source "arch/arm/mach-iop32x/Kconfig"
860
861 source "arch/arm/mach-iop33x/Kconfig"
862
863 source "arch/arm/mach-iop13xx/Kconfig"
864
865 source "arch/arm/mach-ixp4xx/Kconfig"
866
867 source "arch/arm/mach-ixp2000/Kconfig"
868
869 source "arch/arm/mach-ixp23xx/Kconfig"
870
871 source "arch/arm/mach-kirkwood/Kconfig"
872
873 source "arch/arm/mach-ks8695/Kconfig"
874
875 source "arch/arm/mach-lh7a40x/Kconfig"
876
877 source "arch/arm/mach-loki/Kconfig"
878
879 source "arch/arm/mach-lpc32xx/Kconfig"
880
881 source "arch/arm/mach-msm/Kconfig"
882
883 source "arch/arm/mach-mv78xx0/Kconfig"
884
885 source "arch/arm/plat-mxc/Kconfig"
886
887 source "arch/arm/mach-netx/Kconfig"
888
889 source "arch/arm/mach-nomadik/Kconfig"
890 source "arch/arm/plat-nomadik/Kconfig"
891
892 source "arch/arm/mach-ns9xxx/Kconfig"
893
894 source "arch/arm/mach-nuc93x/Kconfig"
895
896 source "arch/arm/plat-omap/Kconfig"
897
898 source "arch/arm/mach-omap1/Kconfig"
899
900 source "arch/arm/mach-omap2/Kconfig"
901
902 source "arch/arm/mach-orion5x/Kconfig"
903
904 source "arch/arm/mach-pxa/Kconfig"
905 source "arch/arm/plat-pxa/Kconfig"
906
907 source "arch/arm/mach-mmp/Kconfig"
908
909 source "arch/arm/mach-realview/Kconfig"
910
911 source "arch/arm/mach-sa1100/Kconfig"
912
913 source "arch/arm/plat-samsung/Kconfig"
914 source "arch/arm/plat-s3c24xx/Kconfig"
915 source "arch/arm/plat-s5p/Kconfig"
916
917 source "arch/arm/plat-spear/Kconfig"
918
919 if ARCH_S3C2410
920 source "arch/arm/mach-s3c2400/Kconfig"
921 source "arch/arm/mach-s3c2410/Kconfig"
922 source "arch/arm/mach-s3c2412/Kconfig"
923 source "arch/arm/mach-s3c2416/Kconfig"
924 source "arch/arm/mach-s3c2440/Kconfig"
925 source "arch/arm/mach-s3c2443/Kconfig"
926 endif
927
928 if ARCH_S3C64XX
929 source "arch/arm/mach-s3c64xx/Kconfig"
930 endif
931
932 source "arch/arm/mach-s5p6440/Kconfig"
933
934 source "arch/arm/mach-s5p6442/Kconfig"
935
936 source "arch/arm/mach-s5pc100/Kconfig"
937
938 source "arch/arm/mach-s5pv210/Kconfig"
939
940 source "arch/arm/mach-s5pv310/Kconfig"
941
942 source "arch/arm/mach-shmobile/Kconfig"
943
944 source "arch/arm/plat-stmp3xxx/Kconfig"
945
946 source "arch/arm/mach-tegra/Kconfig"
947
948 source "arch/arm/mach-u300/Kconfig"
949
950 source "arch/arm/mach-ux500/Kconfig"
951
952 source "arch/arm/mach-versatile/Kconfig"
953
954 source "arch/arm/mach-vexpress/Kconfig"
955
956 source "arch/arm/mach-w90x900/Kconfig"
957
958 # Definitions to make life easier
959 config ARCH_ACORN
960 bool
961
962 config PLAT_IOP
963 bool
964 select GENERIC_CLOCKEVENTS
965
966 config PLAT_ORION
967 bool
968
969 config PLAT_PXA
970 bool
971
972 config PLAT_VERSATILE
973 bool
974
975 config ARM_TIMER_SP804
976 bool
977
978 source arch/arm/mm/Kconfig
979
980 config IWMMXT
981 bool "Enable iWMMXt support"
982 depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK
983 default y if PXA27x || PXA3xx || ARCH_MMP
984 help
985 Enable support for iWMMXt context switching at run time if
986 running on a CPU that supports it.
987
988 # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER
989 config XSCALE_PMU
990 bool
991 depends on CPU_XSCALE && !XSCALE_PMU_TIMER
992 default y
993
994 config CPU_HAS_PMU
995 depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \
996 (!ARCH_OMAP3 || OMAP3_EMU)
997 default y
998 bool
999
1000 if !MMU
1001 source "arch/arm/Kconfig-nommu"
1002 endif
1003
1004 config ARM_ERRATA_411920
1005 bool "ARM errata: Invalidation of the Instruction Cache operation can fail"
1006 depends on CPU_V6 && !SMP
1007 help
1008 Invalidation of the Instruction Cache operation can
1009 fail. This erratum is present in 1136 (before r1p4), 1156 and 1176.
1010 It does not affect the MPCore. This option enables the ARM Ltd.
1011 recommended workaround.
1012
1013 config ARM_ERRATA_430973
1014 bool "ARM errata: Stale prediction on replaced interworking branch"
1015 depends on CPU_V7
1016 help
1017 This option enables the workaround for the 430973 Cortex-A8
1018 (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb
1019 interworking branch is replaced with another code sequence at the
1020 same virtual address, whether due to self-modifying code or virtual
1021 to physical address re-mapping, Cortex-A8 does not recover from the
1022 stale interworking branch prediction. This results in Cortex-A8
1023 executing the new code sequence in the incorrect ARM or Thumb state.
1024 The workaround enables the BTB/BTAC operations by setting ACTLR.IBE
1025 and also flushes the branch target cache at every context switch.
1026 Note that setting specific bits in the ACTLR register may not be
1027 available in non-secure mode.
1028
1029 config ARM_ERRATA_458693
1030 bool "ARM errata: Processor deadlock when a false hazard is created"
1031 depends on CPU_V7
1032 help
1033 This option enables the workaround for the 458693 Cortex-A8 (r2p0)
1034 erratum. For very specific sequences of memory operations, it is
1035 possible for a hazard condition intended for a cache line to instead
1036 be incorrectly associated with a different cache line. This false
1037 hazard might then cause a processor deadlock. The workaround enables
1038 the L1 caching of the NEON accesses and disables the PLD instruction
1039 in the ACTLR register. Note that setting specific bits in the ACTLR
1040 register may not be available in non-secure mode.
1041
1042 config ARM_ERRATA_460075
1043 bool "ARM errata: Data written to the L2 cache can be overwritten with stale data"
1044 depends on CPU_V7
1045 help
1046 This option enables the workaround for the 460075 Cortex-A8 (r2p0)
1047 erratum. Any asynchronous access to the L2 cache may encounter a
1048 situation in which recent store transactions to the L2 cache are lost
1049 and overwritten with stale memory contents from external memory. The
1050 workaround disables the write-allocate mode for the L2 cache via the
1051 ACTLR register. Note that setting specific bits in the ACTLR register
1052 may not be available in non-secure mode.
1053
1054 config PL310_ERRATA_588369
1055 bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
1056 depends on CACHE_L2X0 && ARCH_OMAP4
1057 help
1058 The PL310 L2 cache controller implements three types of Clean &
1059 Invalidate maintenance operations: by Physical Address
1060 (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
1061 They are architecturally defined to behave as the execution of a
1062 clean operation followed immediately by an invalidate operation,
1063 both performing to the same memory location. This functionality
1064 is not correctly implemented in PL310 as clean lines are not
1065 invalidated as a result of these operations. Note that this errata
1066 uses Texas Instrument's secure monitor api.
1067
1068 config ARM_ERRATA_720789
1069 bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID"
1070 depends on CPU_V7 && SMP
1071 help
1072 This option enables the workaround for the 720789 Cortex-A9 (prior to
1073 r2p0) erratum. A faulty ASID can be sent to the other CPUs for the
1074 broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS.
1075 As a consequence of this erratum, some TLB entries which should be
1076 invalidated are not, resulting in an incoherency in the system page
1077 tables. The workaround changes the TLB flushing routines to invalidate
1078 entries regardless of the ASID.
1079 endmenu
1080
1081 source "arch/arm/common/Kconfig"
1082
1083 menu "Bus support"
1084
1085 config ARM_AMBA
1086 bool
1087
1088 config ISA
1089 bool
1090 help
1091 Find out whether you have ISA slots on your motherboard. ISA is the
1092 name of a bus system, i.e. the way the CPU talks to the other stuff
1093 inside your box. Other bus systems are PCI, EISA, MicroChannel
1094 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
1095 newer boards don't support it. If you have ISA, say Y, otherwise N.
1096
1097 # Select ISA DMA controller support
1098 config ISA_DMA
1099 bool
1100 select ISA_DMA_API
1101
1102 # Select ISA DMA interface
1103 config ISA_DMA_API
1104 bool
1105
1106 config PCI
1107 bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE || ARCH_CNS3XXX
1108 help
1109 Find out whether you have a PCI motherboard. PCI is the name of a
1110 bus system, i.e. the way the CPU talks to the other stuff inside
1111 your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or
1112 VESA. If you have PCI, say Y, otherwise N.
1113
1114 config PCI_DOMAINS
1115 bool
1116 depends on PCI
1117
1118 config PCI_SYSCALL
1119 def_bool PCI
1120
1121 # Select the host bridge type
1122 config PCI_HOST_VIA82C505
1123 bool
1124 depends on PCI && ARCH_SHARK
1125 default y
1126
1127 config PCI_HOST_ITE8152
1128 bool
1129 depends on PCI && MACH_ARMCORE
1130 default y
1131 select DMABOUNCE
1132
1133 source "drivers/pci/Kconfig"
1134
1135 source "drivers/pcmcia/Kconfig"
1136
1137 endmenu
1138
1139 menu "Kernel Features"
1140
1141 source "kernel/time/Kconfig"
1142
1143 config SMP
1144 bool "Symmetric Multi-Processing (EXPERIMENTAL)"
1145 depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
1146 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
1147 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1148 depends on GENERIC_CLOCKEVENTS
1149 select USE_GENERIC_SMP_HELPERS
1150 select HAVE_ARM_SCU if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 ||\
1151 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4
1152 help
1153 This enables support for systems with more than one CPU. If you have
1154 a system with only one CPU, like most personal computers, say N. If
1155 you have a system with more than one CPU, say Y.
1156
1157 If you say N here, the kernel will run on single and multiprocessor
1158 machines, but will use only one CPU of a multiprocessor machine. If
1159 you say Y here, the kernel will run on many, but not all, single
1160 processor machines. On a single processor machine, the kernel will
1161 run faster if you say N here.
1162
1163 See also <file:Documentation/i386/IO-APIC.txt>,
1164 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at
1165 <http://www.linuxdoc.org/docs.html#howto>.
1166
1167 If you don't know what to do here, say N.
1168
1169 config HAVE_ARM_SCU
1170 bool
1171 depends on SMP
1172 help
1173 This option enables support for the ARM system coherency unit
1174
1175 config HAVE_ARM_TWD
1176 bool
1177 depends on SMP
1178 help
1179 This options enables support for the ARM timer and watchdog unit
1180
1181 choice
1182 prompt "Memory split"
1183 default VMSPLIT_3G
1184 help
1185 Select the desired split between kernel and user memory.
1186
1187 If you are not absolutely sure what you are doing, leave this
1188 option alone!
1189
1190 config VMSPLIT_3G
1191 bool "3G/1G user/kernel split"
1192 config VMSPLIT_2G
1193 bool "2G/2G user/kernel split"
1194 config VMSPLIT_1G
1195 bool "1G/3G user/kernel split"
1196 endchoice
1197
1198 config PAGE_OFFSET
1199 hex
1200 default 0x40000000 if VMSPLIT_1G
1201 default 0x80000000 if VMSPLIT_2G
1202 default 0xC0000000
1203
1204 config NR_CPUS
1205 int "Maximum number of CPUs (2-32)"
1206 range 2 32
1207 depends on SMP
1208 default "4"
1209
1210 config HOTPLUG_CPU
1211 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
1212 depends on SMP && HOTPLUG && EXPERIMENTAL
1213 help
1214 Say Y here to experiment with turning CPUs off and on. CPUs
1215 can be controlled through /sys/devices/system/cpu.
1216
1217 config LOCAL_TIMERS
1218 bool "Use local timer interrupts"
1219 depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
1220 REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
1221 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
1222 default y
1223 select HAVE_ARM_TWD if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 || \
1224 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS
1225 help
1226 Enable support for local timers on SMP platforms, rather then the
1227 legacy IPI broadcast method. Local timers allows the system
1228 accounting to be spread across the timer interval, preventing a
1229 "thundering herd" at every timer tick.
1230
1231 source kernel/Kconfig.preempt
1232
1233 config HZ
1234 int
1235 default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || \
1236 ARCH_S5P6442 || ARCH_S5PV210 || ARCH_S5PV310
1237 default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER
1238 default AT91_TIMER_HZ if ARCH_AT91
1239 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE
1240 default 100
1241
1242 config THUMB2_KERNEL
1243 bool "Compile the kernel in Thumb-2 mode"
1244 depends on CPU_V7 && EXPERIMENTAL
1245 select AEABI
1246 select ARM_ASM_UNIFIED
1247 help
1248 By enabling this option, the kernel will be compiled in
1249 Thumb-2 mode. A compiler/assembler that understand the unified
1250 ARM-Thumb syntax is needed.
1251
1252 If unsure, say N.
1253
1254 config ARM_ASM_UNIFIED
1255 bool
1256
1257 config AEABI
1258 bool "Use the ARM EABI to compile the kernel"
1259 help
1260 This option allows for the kernel to be compiled using the latest
1261 ARM ABI (aka EABI). This is only useful if you are using a user
1262 space environment that is also compiled with EABI.
1263
1264 Since there are major incompatibilities between the legacy ABI and
1265 EABI, especially with regard to structure member alignment, this
1266 option also changes the kernel syscall calling convention to
1267 disambiguate both ABIs and allow for backward compatibility support
1268 (selected with CONFIG_OABI_COMPAT).
1269
1270 To use this you need GCC version 4.0.0 or later.
1271
1272 config OABI_COMPAT
1273 bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)"
1274 depends on AEABI && EXPERIMENTAL
1275 default y
1276 help
1277 This option preserves the old syscall interface along with the
1278 new (ARM EABI) one. It also provides a compatibility layer to
1279 intercept syscalls that have structure arguments which layout
1280 in memory differs between the legacy ABI and the new ARM EABI
1281 (only for non "thumb" binaries). This option adds a tiny
1282 overhead to all syscalls and produces a slightly larger kernel.
1283 If you know you'll be using only pure EABI user space then you
1284 can say N here. If this option is not selected and you attempt
1285 to execute a legacy ABI binary then the result will be
1286 UNPREDICTABLE (in fact it can be predicted that it won't work
1287 at all). If in doubt say Y.
1288
1289 config ARCH_HAS_HOLES_MEMORYMODEL
1290 bool
1291
1292 config ARCH_SPARSEMEM_ENABLE
1293 bool
1294
1295 config ARCH_SPARSEMEM_DEFAULT
1296 def_bool ARCH_SPARSEMEM_ENABLE
1297
1298 config ARCH_SELECT_MEMORY_MODEL
1299 def_bool ARCH_SPARSEMEM_ENABLE
1300
1301 config HIGHMEM
1302 bool "High Memory Support (EXPERIMENTAL)"
1303 depends on MMU && EXPERIMENTAL
1304 help
1305 The address space of ARM processors is only 4 Gigabytes large
1306 and it has to accommodate user address space, kernel address
1307 space as well as some memory mapped IO. That means that, if you
1308 have a large amount of physical memory and/or IO, not all of the
1309 memory can be "permanently mapped" by the kernel. The physical
1310 memory that is not permanently mapped is called "high memory".
1311
1312 Depending on the selected kernel/user memory split, minimum
1313 vmalloc space and actual amount of RAM, you may not need this
1314 option which should result in a slightly faster kernel.
1315
1316 If unsure, say n.
1317
1318 config HIGHPTE
1319 bool "Allocate 2nd-level pagetables from highmem"
1320 depends on HIGHMEM
1321 depends on !OUTER_CACHE
1322
1323 config HW_PERF_EVENTS
1324 bool "Enable hardware performance counter support for perf events"
1325 depends on PERF_EVENTS && CPU_HAS_PMU
1326 default y
1327 help
1328 Enable hardware performance counter support for perf events. If
1329 disabled, perf events will use software events only.
1330
1331 config SPARSE_IRQ
1332 def_bool n
1333 help
1334 This enables support for sparse irqs. This is useful in general
1335 as most CPUs have a fairly sparse array of IRQ vectors, which
1336 the irq_desc then maps directly on to. Systems with a high
1337 number of off-chip IRQs will want to treat this as
1338 experimental until they have been independently verified.
1339
1340 source "mm/Kconfig"
1341
1342 config FORCE_MAX_ZONEORDER
1343 int "Maximum zone order" if ARCH_SHMOBILE
1344 range 11 64 if ARCH_SHMOBILE
1345 default "9" if SA1111
1346 default "11"
1347 help
1348 The kernel memory allocator divides physically contiguous memory
1349 blocks into "zones", where each zone is a power of two number of
1350 pages. This option selects the largest power of two that the kernel
1351 keeps in the memory allocator. If you need to allocate very large
1352 blocks of physically contiguous memory, then you may need to
1353 increase this value.
1354
1355 This config option is actually maximum order plus one. For example,
1356 a value of 11 means that the largest free memory block is 2^10 pages.
1357
1358 config LEDS
1359 bool "Timer and CPU usage LEDs"
1360 depends on ARCH_CDB89712 || ARCH_EBSA110 || \
1361 ARCH_EBSA285 || ARCH_INTEGRATOR || \
1362 ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
1363 ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
1364 ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \
1365 ARCH_AT91 || ARCH_DAVINCI || \
1366 ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW
1367 help
1368 If you say Y here, the LEDs on your machine will be used
1369 to provide useful information about your current system status.
1370
1371 If you are compiling a kernel for a NetWinder or EBSA-285, you will
1372 be able to select which LEDs are active using the options below. If
1373 you are compiling a kernel for the EBSA-110 or the LART however, the
1374 red LED will simply flash regularly to indicate that the system is
1375 still functional. It is safe to say Y here if you have a CATS
1376 system, but the driver will do nothing.
1377
1378 config LEDS_TIMER
1379 bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \
1380 OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1381 || MACH_OMAP_PERSEUS2
1382 depends on LEDS
1383 depends on !GENERIC_CLOCKEVENTS
1384 default y if ARCH_EBSA110
1385 help
1386 If you say Y here, one of the system LEDs (the green one on the
1387 NetWinder, the amber one on the EBSA285, or the red one on the LART)
1388 will flash regularly to indicate that the system is still
1389 operational. This is mainly useful to kernel hackers who are
1390 debugging unstable kernels.
1391
1392 The LART uses the same LED for both Timer LED and CPU usage LED
1393 functions. You may choose to use both, but the Timer LED function
1394 will overrule the CPU usage LED.
1395
1396 config LEDS_CPU
1397 bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \
1398 !ARCH_OMAP) \
1399 || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \
1400 || MACH_OMAP_PERSEUS2
1401 depends on LEDS
1402 help
1403 If you say Y here, the red LED will be used to give a good real
1404 time indication of CPU usage, by lighting whenever the idle task
1405 is not currently executing.
1406
1407 The LART uses the same LED for both Timer LED and CPU usage LED
1408 functions. You may choose to use both, but the Timer LED function
1409 will overrule the CPU usage LED.
1410
1411 config ALIGNMENT_TRAP
1412 bool
1413 depends on CPU_CP15_MMU
1414 default y if !ARCH_EBSA110
1415 select HAVE_PROC_CPU if PROC_FS
1416 help
1417 ARM processors cannot fetch/store information which is not
1418 naturally aligned on the bus, i.e., a 4 byte fetch must start at an
1419 address divisible by 4. On 32-bit ARM processors, these non-aligned
1420 fetch/store instructions will be emulated in software if you say
1421 here, which has a severe performance impact. This is necessary for
1422 correct operation of some network protocols. With an IP-only
1423 configuration it is safe to say N, otherwise say Y.
1424
1425 config UACCESS_WITH_MEMCPY
1426 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)"
1427 depends on MMU && EXPERIMENTAL
1428 default y if CPU_FEROCEON
1429 help
1430 Implement faster copy_to_user and clear_user methods for CPU
1431 cores where a 8-word STM instruction give significantly higher
1432 memory write throughput than a sequence of individual 32bit stores.
1433
1434 A possible side effect is a slight increase in scheduling latency
1435 between threads sharing the same address space if they invoke
1436 such copy operations with large buffers.
1437
1438 However, if the CPU data cache is using a write-allocate mode,
1439 this option is unlikely to provide any performance gain.
1440
1441 config CC_STACKPROTECTOR
1442 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
1443 help
1444 This option turns on the -fstack-protector GCC feature. This
1445 feature puts, at the beginning of functions, a canary value on
1446 the stack just before the return address, and validates
1447 the value just before actually returning. Stack based buffer
1448 overflows (that need to overwrite this return address) now also
1449 overwrite the canary, which gets detected and the attack is then
1450 neutralized via a kernel panic.
1451 This feature requires gcc version 4.2 or above.
1452
1453 config DEPRECATED_PARAM_STRUCT
1454 bool "Provide old way to pass kernel parameters"
1455 help
1456 This was deprecated in 2001 and announced to live on for 5 years.
1457 Some old boot loaders still use this way.
1458
1459 endmenu
1460
1461 menu "Boot options"
1462
1463 # Compressed boot loader in ROM. Yes, we really want to ask about
1464 # TEXT and BSS so we preserve their values in the config files.
1465 config ZBOOT_ROM_TEXT
1466 hex "Compressed ROM boot loader base address"
1467 default "0"
1468 help
1469 The physical address at which the ROM-able zImage is to be
1470 placed in the target. Platforms which normally make use of
1471 ROM-able zImage formats normally set this to a suitable
1472 value in their defconfig file.
1473
1474 If ZBOOT_ROM is not enabled, this has no effect.
1475
1476 config ZBOOT_ROM_BSS
1477 hex "Compressed ROM boot loader BSS address"
1478 default "0"
1479 help
1480 The base address of an area of read/write memory in the target
1481 for the ROM-able zImage which must be available while the
1482 decompressor is running. It must be large enough to hold the
1483 entire decompressed kernel plus an additional 128 KiB.
1484 Platforms which normally make use of ROM-able zImage formats
1485 normally set this to a suitable value in their defconfig file.
1486
1487 If ZBOOT_ROM is not enabled, this has no effect.
1488
1489 config ZBOOT_ROM
1490 bool "Compressed boot loader in ROM/flash"
1491 depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
1492 help
1493 Say Y here if you intend to execute your compressed kernel image
1494 (zImage) directly from ROM or flash. If unsure, say N.
1495
1496 config CMDLINE
1497 string "Default kernel command string"
1498 default ""
1499 help
1500 On some architectures (EBSA110 and CATS), there is currently no way
1501 for the boot loader to pass arguments to the kernel. For these
1502 architectures, you should supply some command-line options at build
1503 time by entering them here. As a minimum, you should specify the
1504 memory size and the root device (e.g., mem=64M root=/dev/nfs).
1505
1506 config CMDLINE_FORCE
1507 bool "Always use the default kernel command string"
1508 depends on CMDLINE != ""
1509 help
1510 Always use the default kernel command string, even if the boot
1511 loader passes other arguments to the kernel.
1512 This is useful if you cannot or don't want to change the
1513 command-line options your boot loader passes to the kernel.
1514
1515 If unsure, say N.
1516
1517 config XIP_KERNEL
1518 bool "Kernel Execute-In-Place from ROM"
1519 depends on !ZBOOT_ROM
1520 help
1521 Execute-In-Place allows the kernel to run from non-volatile storage
1522 directly addressable by the CPU, such as NOR flash. This saves RAM
1523 space since the text section of the kernel is not loaded from flash
1524 to RAM. Read-write sections, such as the data section and stack,
1525 are still copied to RAM. The XIP kernel is not compressed since
1526 it has to run directly from flash, so it will take more space to
1527 store it. The flash address used to link the kernel object files,
1528 and for storing it, is configuration dependent. Therefore, if you
1529 say Y here, you must know the proper physical address where to
1530 store the kernel image depending on your own flash memory usage.
1531
1532 Also note that the make target becomes "make xipImage" rather than
1533 "make zImage" or "make Image". The final kernel binary to put in
1534 ROM memory will be arch/arm/boot/xipImage.
1535
1536 If unsure, say N.
1537
1538 config XIP_PHYS_ADDR
1539 hex "XIP Kernel Physical Location"
1540 depends on XIP_KERNEL
1541 default "0x00080000"
1542 help
1543 This is the physical address in your flash memory the kernel will
1544 be linked for and stored to. This address is dependent on your
1545 own flash usage.
1546
1547 config KEXEC
1548 bool "Kexec system call (EXPERIMENTAL)"
1549 depends on EXPERIMENTAL
1550 help
1551 kexec is a system call that implements the ability to shutdown your
1552 current kernel, and to start another kernel. It is like a reboot
1553 but it is independent of the system firmware. And like a reboot
1554 you can start any kernel with it, not just Linux.
1555
1556 It is an ongoing process to be certain the hardware in a machine
1557 is properly shutdown, so do not be surprised if this code does not
1558 initially work for you. It may help to enable device hotplugging
1559 support.
1560
1561 config ATAGS_PROC
1562 bool "Export atags in procfs"
1563 depends on KEXEC
1564 default y
1565 help
1566 Should the atags used to boot the kernel be exported in an "atags"
1567 file in procfs. Useful with kexec.
1568
1569 config AUTO_ZRELADDR
1570 bool "Auto calculation of the decompressed kernel image address"
1571 depends on !ZBOOT_ROM && !ARCH_U300
1572 help
1573 ZRELADDR is the physical address where the decompressed kernel
1574 image will be placed. If AUTO_ZRELADDR is selected, the address
1575 will be determined at run-time by masking the current IP with
1576 0xf8000000. This assumes the zImage being placed in the first 128MB
1577 from start of memory.
1578
1579 config ZRELADDR
1580 hex "Physical address of the decompressed kernel image"
1581 depends on !AUTO_ZRELADDR
1582 default 0x00008000 if ARCH_BCMRING ||\
1583 ARCH_CNS3XXX ||\
1584 ARCH_DOVE ||\
1585 ARCH_EBSA110 ||\
1586 ARCH_FOOTBRIDGE ||\
1587 ARCH_INTEGRATOR ||\
1588 ARCH_IOP13XX ||\
1589 ARCH_IOP33X ||\
1590 ARCH_IXP2000 ||\
1591 ARCH_IXP23XX ||\
1592 ARCH_IXP4XX ||\
1593 ARCH_KIRKWOOD ||\
1594 ARCH_KS8695 ||\
1595 ARCH_LOKI ||\
1596 ARCH_MMP ||\
1597 ARCH_MV78XX0 ||\
1598 ARCH_NOMADIK ||\
1599 ARCH_NUC93X ||\
1600 ARCH_NS9XXX ||\
1601 ARCH_ORION5X ||\
1602 ARCH_SPEAR3XX ||\
1603 ARCH_SPEAR6XX ||\
1604 ARCH_U8500 ||\
1605 ARCH_VERSATILE ||\
1606 ARCH_W90X900
1607 default 0x08008000 if ARCH_MX1 ||\
1608 ARCH_SHARK
1609 default 0x10008000 if ARCH_MSM ||\
1610 ARCH_OMAP1 ||\
1611 ARCH_RPC
1612 default 0x20008000 if ARCH_S5P6440 ||\
1613 ARCH_S5P6442 ||\
1614 ARCH_S5PC100 ||\
1615 ARCH_S5PV210
1616 default 0x30008000 if ARCH_S3C2410 ||\
1617 ARCH_S3C2400 ||\
1618 ARCH_S3C2412 ||\
1619 ARCH_S3C2416 ||\
1620 ARCH_S3C2440 ||\
1621 ARCH_S3C2443
1622 default 0x40008000 if ARCH_STMP378X ||\
1623 ARCH_STMP37XX ||\
1624 ARCH_SH7372 ||\
1625 ARCH_SH7377
1626 default 0x50008000 if ARCH_S3C64XX ||\
1627 ARCH_SH7367
1628 default 0x60008000 if ARCH_VEXPRESS
1629 default 0x80008000 if ARCH_MX25 ||\
1630 ARCH_MX3 ||\
1631 ARCH_NETX ||\
1632 ARCH_OMAP2PLUS ||\
1633 ARCH_PNX4008
1634 default 0x90008000 if ARCH_MX5 ||\
1635 ARCH_MX91231
1636 default 0xa0008000 if ARCH_IOP32X ||\
1637 ARCH_PXA ||\
1638 MACH_MX27
1639 default 0xc0008000 if ARCH_LH7A40X ||\
1640 MACH_MX21
1641 default 0xf0008000 if ARCH_AAEC2000 ||\
1642 ARCH_L7200
1643 default 0xc0028000 if ARCH_CLPS711X
1644 default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1645 default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
1646 default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
1647 default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
1648 default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
1649 default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
1650 default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
1651 default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
1652 default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
1653 default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
1654 default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
1655 default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
1656 default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
1657 default 0xc0208000 if ARCH_SA1100 && SA1111
1658 default 0xc0008000 if ARCH_SA1100 && !SA1111
1659 default 0x30108000 if ARCH_S3C2410 && PM_H1940
1660 default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
1661 default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
1662 help
1663 ZRELADDR is the physical address where the decompressed kernel
1664 image will be placed. ZRELADDR has to be specified when the
1665 assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
1666 selected.
1667
1668 endmenu
1669
1670 menu "CPU Power Management"
1671
1672 if ARCH_HAS_CPUFREQ
1673
1674 source "drivers/cpufreq/Kconfig"
1675
1676 config CPU_FREQ_SA1100
1677 bool
1678
1679 config CPU_FREQ_SA1110
1680 bool
1681
1682 config CPU_FREQ_INTEGRATOR
1683 tristate "CPUfreq driver for ARM Integrator CPUs"
1684 depends on ARCH_INTEGRATOR && CPU_FREQ
1685 default y
1686 help
1687 This enables the CPUfreq driver for ARM Integrator CPUs.
1688
1689 For details, take a look at <file:Documentation/cpu-freq>.
1690
1691 If in doubt, say Y.
1692
1693 config CPU_FREQ_PXA
1694 bool
1695 depends on CPU_FREQ && ARCH_PXA && PXA25x
1696 default y
1697 select CPU_FREQ_DEFAULT_GOV_USERSPACE
1698
1699 config CPU_FREQ_S3C64XX
1700 bool "CPUfreq support for Samsung S3C64XX CPUs"
1701 depends on CPU_FREQ && CPU_S3C6410
1702
1703 config CPU_FREQ_S3C
1704 bool
1705 help
1706 Internal configuration node for common cpufreq on Samsung SoC
1707
1708 config CPU_FREQ_S3C24XX
1709 bool "CPUfreq driver for Samsung S3C24XX series CPUs"
1710 depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL
1711 select CPU_FREQ_S3C
1712 help
1713 This enables the CPUfreq driver for the Samsung S3C24XX family
1714 of CPUs.
1715
1716 For details, take a look at <file:Documentation/cpu-freq>.
1717
1718 If in doubt, say N.
1719
1720 config CPU_FREQ_S3C24XX_PLL
1721 bool "Support CPUfreq changing of PLL frequency"
1722 depends on CPU_FREQ_S3C24XX && EXPERIMENTAL
1723 help
1724 Compile in support for changing the PLL frequency from the
1725 S3C24XX series CPUfreq driver. The PLL takes time to settle
1726 after a frequency change, so by default it is not enabled.
1727
1728 This also means that the PLL tables for the selected CPU(s) will
1729 be built which may increase the size of the kernel image.
1730
1731 config CPU_FREQ_S3C24XX_DEBUG
1732 bool "Debug CPUfreq Samsung driver core"
1733 depends on CPU_FREQ_S3C24XX
1734 help
1735 Enable s3c_freq_dbg for the Samsung S3C CPUfreq core
1736
1737 config CPU_FREQ_S3C24XX_IODEBUG
1738 bool "Debug CPUfreq Samsung driver IO timing"
1739 depends on CPU_FREQ_S3C24XX
1740 help
1741 Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core
1742
1743 config CPU_FREQ_S3C24XX_DEBUGFS
1744 bool "Export debugfs for CPUFreq"
1745 depends on CPU_FREQ_S3C24XX && DEBUG_FS
1746 help
1747 Export status information via debugfs.
1748
1749 endif
1750
1751 source "drivers/cpuidle/Kconfig"
1752
1753 endmenu
1754
1755 menu "Floating point emulation"
1756
1757 comment "At least one emulation must be selected"
1758
1759 config FPE_NWFPE
1760 bool "NWFPE math emulation"
1761 depends on !AEABI || OABI_COMPAT
1762 ---help---
1763 Say Y to include the NWFPE floating point emulator in the kernel.
1764 This is necessary to run most binaries. Linux does not currently
1765 support floating point hardware so you need to say Y here even if
1766 your machine has an FPA or floating point co-processor podule.
1767
1768 You may say N here if you are going to load the Acorn FPEmulator
1769 early in the bootup.
1770
1771 config FPE_NWFPE_XP
1772 bool "Support extended precision"
1773 depends on FPE_NWFPE
1774 help
1775 Say Y to include 80-bit support in the kernel floating-point
1776 emulator. Otherwise, only 32 and 64-bit support is compiled in.
1777 Note that gcc does not generate 80-bit operations by default,
1778 so in most cases this option only enlarges the size of the
1779 floating point emulator without any good reason.
1780
1781 You almost surely want to say N here.
1782
1783 config FPE_FASTFPE
1784 bool "FastFPE math emulation (EXPERIMENTAL)"
1785 depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL
1786 ---help---
1787 Say Y here to include the FAST floating point emulator in the kernel.
1788 This is an experimental much faster emulator which now also has full
1789 precision for the mantissa. It does not support any exceptions.
1790 It is very simple, and approximately 3-6 times faster than NWFPE.
1791
1792 It should be sufficient for most programs. It may be not suitable
1793 for scientific calculations, but you have to check this for yourself.
1794 If you do not feel you need a faster FP emulation you should better
1795 choose NWFPE.
1796
1797 config VFP
1798 bool "VFP-format floating point maths"
1799 depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON
1800 help
1801 Say Y to include VFP support code in the kernel. This is needed
1802 if your hardware includes a VFP unit.
1803
1804 Please see <file:Documentation/arm/VFP/release-notes.txt> for
1805 release notes and additional status information.
1806
1807 Say N if your target does not have VFP hardware.
1808
1809 config VFPv3
1810 bool
1811 depends on VFP
1812 default y if CPU_V7
1813
1814 config NEON
1815 bool "Advanced SIMD (NEON) Extension support"
1816 depends on VFPv3 && CPU_V7
1817 help
1818 Say Y to include support code for NEON, the ARMv7 Advanced SIMD
1819 Extension.
1820
1821 endmenu
1822
1823 menu "Userspace binary formats"
1824
1825 source "fs/Kconfig.binfmt"
1826
1827 config ARTHUR
1828 tristate "RISC OS personality"
1829 depends on !AEABI
1830 help
1831 Say Y here to include the kernel code necessary if you want to run
1832 Acorn RISC OS/Arthur binaries under Linux. This code is still very
1833 experimental; if this sounds frightening, say N and sleep in peace.
1834 You can also say M here to compile this support as a module (which
1835 will be called arthur).
1836
1837 endmenu
1838
1839 menu "Power management options"
1840
1841 source "kernel/power/Kconfig"
1842
1843 config ARCH_SUSPEND_POSSIBLE
1844 def_bool y
1845
1846 endmenu
1847
1848 source "net/Kconfig"
1849
1850 source "drivers/Kconfig"
1851
1852 source "fs/Kconfig"
1853
1854 source "arch/arm/Kconfig.debug"
1855
1856 source "security/Kconfig"
1857
1858 source "crypto/Kconfig"
1859
1860 source "lib/Kconfig"
kernel source for telekom puls (alcatel/mediatek)