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Commit | Line | Data |
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1 | # | |
2 | # For a description of the syntax of this configuration file, | |
3 | # see Documentation/kbuild/kconfig-language.txt. | |
4 | # | |
5 | ||
6 | mainmenu "Linux Kernel Configuration" | |
7 | ||
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 if (HAVE_PERF_EVENTS) | |
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_KERNEL_LZMA | |
25 | select HAVE_PERF_EVENTS | |
26 | select PERF_USE_VMALLOC | |
27 | help | |
28 | The ARM series is a line of low-power-consumption RISC chip designs | |
29 | licensed by ARM Ltd and targeted at embedded applications and | |
30 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer | |
31 | manufactured, but legacy ARM-based PC hardware remains popular in | |
32 | Europe. There is an ARM Linux project with a web page at | |
33 | <http://www.arm.linux.org.uk/>. | |
34 | ||
35 | config HAVE_PWM | |
36 | bool | |
37 | ||
38 | config SYS_SUPPORTS_APM_EMULATION | |
39 | bool | |
40 | ||
41 | config GENERIC_GPIO | |
42 | bool | |
43 | ||
44 | config GENERIC_TIME | |
45 | bool | |
46 | default y | |
47 | ||
48 | config ARCH_USES_GETTIMEOFFSET | |
49 | bool | |
50 | default n | |
51 | ||
52 | config GENERIC_CLOCKEVENTS | |
53 | bool | |
54 | ||
55 | config GENERIC_CLOCKEVENTS_BROADCAST | |
56 | bool | |
57 | depends on GENERIC_CLOCKEVENTS | |
58 | default y if SMP && !LOCAL_TIMERS | |
59 | ||
60 | config HAVE_TCM | |
61 | bool | |
62 | select GENERIC_ALLOCATOR | |
63 | ||
64 | config HAVE_PROC_CPU | |
65 | bool | |
66 | ||
67 | config NO_IOPORT | |
68 | bool | |
69 | ||
70 | config EISA | |
71 | bool | |
72 | ---help--- | |
73 | The Extended Industry Standard Architecture (EISA) bus was | |
74 | developed as an open alternative to the IBM MicroChannel bus. | |
75 | ||
76 | The EISA bus provided some of the features of the IBM MicroChannel | |
77 | bus while maintaining backward compatibility with cards made for | |
78 | the older ISA bus. The EISA bus saw limited use between 1988 and | |
79 | 1995 when it was made obsolete by the PCI bus. | |
80 | ||
81 | Say Y here if you are building a kernel for an EISA-based machine. | |
82 | ||
83 | Otherwise, say N. | |
84 | ||
85 | config SBUS | |
86 | bool | |
87 | ||
88 | config MCA | |
89 | bool | |
90 | help | |
91 | MicroChannel Architecture is found in some IBM PS/2 machines and | |
92 | laptops. It is a bus system similar to PCI or ISA. See | |
93 | <file:Documentation/mca.txt> (and especially the web page given | |
94 | there) before attempting to build an MCA bus kernel. | |
95 | ||
96 | config GENERIC_HARDIRQS | |
97 | bool | |
98 | default y | |
99 | ||
100 | config STACKTRACE_SUPPORT | |
101 | bool | |
102 | default y | |
103 | ||
104 | config HAVE_LATENCYTOP_SUPPORT | |
105 | bool | |
106 | depends on !SMP | |
107 | default y | |
108 | ||
109 | config LOCKDEP_SUPPORT | |
110 | bool | |
111 | default y | |
112 | ||
113 | config TRACE_IRQFLAGS_SUPPORT | |
114 | bool | |
115 | default y | |
116 | ||
117 | config HARDIRQS_SW_RESEND | |
118 | bool | |
119 | default y | |
120 | ||
121 | config GENERIC_IRQ_PROBE | |
122 | bool | |
123 | default y | |
124 | ||
125 | config GENERIC_LOCKBREAK | |
126 | bool | |
127 | default y | |
128 | depends on SMP && PREEMPT | |
129 | ||
130 | config RWSEM_GENERIC_SPINLOCK | |
131 | bool | |
132 | default y | |
133 | ||
134 | config RWSEM_XCHGADD_ALGORITHM | |
135 | bool | |
136 | ||
137 | config ARCH_HAS_ILOG2_U32 | |
138 | bool | |
139 | ||
140 | config ARCH_HAS_ILOG2_U64 | |
141 | bool | |
142 | ||
143 | config ARCH_HAS_CPUFREQ | |
144 | bool | |
145 | help | |
146 | Internal node to signify that the ARCH has CPUFREQ support | |
147 | and that the relevant menu configurations are displayed for | |
148 | it. | |
149 | ||
150 | config GENERIC_HWEIGHT | |
151 | bool | |
152 | default y | |
153 | ||
154 | config GENERIC_CALIBRATE_DELAY | |
155 | bool | |
156 | default y | |
157 | ||
158 | config ARCH_MAY_HAVE_PC_FDC | |
159 | bool | |
160 | ||
161 | config ZONE_DMA | |
162 | bool | |
163 | ||
164 | config NEED_DMA_MAP_STATE | |
165 | def_bool y | |
166 | ||
167 | config GENERIC_ISA_DMA | |
168 | bool | |
169 | ||
170 | config FIQ | |
171 | bool | |
172 | ||
173 | config ARCH_MTD_XIP | |
174 | bool | |
175 | ||
176 | config GENERIC_HARDIRQS_NO__DO_IRQ | |
177 | def_bool y | |
178 | ||
179 | config ARM_L1_CACHE_SHIFT_6 | |
180 | bool | |
181 | help | |
182 | Setting ARM L1 cache line size to 64 Bytes. | |
183 | ||
184 | config VECTORS_BASE | |
185 | hex | |
186 | default 0xffff0000 if MMU || CPU_HIGH_VECTOR | |
187 | default DRAM_BASE if REMAP_VECTORS_TO_RAM | |
188 | default 0x00000000 | |
189 | help | |
190 | The base address of exception vectors. | |
191 | ||
192 | source "init/Kconfig" | |
193 | ||
194 | source "kernel/Kconfig.freezer" | |
195 | ||
196 | menu "System Type" | |
197 | ||
198 | config MMU | |
199 | bool "MMU-based Paged Memory Management Support" | |
200 | default y | |
201 | help | |
202 | Select if you want MMU-based virtualised addressing space | |
203 | support by paged memory management. If unsure, say 'Y'. | |
204 | ||
205 | # | |
206 | # The "ARM system type" choice list is ordered alphabetically by option | |
207 | # text. Please add new entries in the option alphabetic order. | |
208 | # | |
209 | choice | |
210 | prompt "ARM system type" | |
211 | default ARCH_VERSATILE | |
212 | ||
213 | config ARCH_AAEC2000 | |
214 | bool "Agilent AAEC-2000 based" | |
215 | select CPU_ARM920T | |
216 | select ARM_AMBA | |
217 | select HAVE_CLK | |
218 | select ARCH_USES_GETTIMEOFFSET | |
219 | help | |
220 | This enables support for systems based on the Agilent AAEC-2000 | |
221 | ||
222 | config ARCH_INTEGRATOR | |
223 | bool "ARM Ltd. Integrator family" | |
224 | select ARM_AMBA | |
225 | select ARCH_HAS_CPUFREQ | |
226 | select COMMON_CLKDEV | |
227 | select ICST | |
228 | select GENERIC_CLOCKEVENTS | |
229 | select PLAT_VERSATILE | |
230 | help | |
231 | Support for ARM's Integrator platform. | |
232 | ||
233 | config ARCH_REALVIEW | |
234 | bool "ARM Ltd. RealView family" | |
235 | select ARM_AMBA | |
236 | select COMMON_CLKDEV | |
237 | select ICST | |
238 | select GENERIC_CLOCKEVENTS | |
239 | select ARCH_WANT_OPTIONAL_GPIOLIB | |
240 | select PLAT_VERSATILE | |
241 | select ARM_TIMER_SP804 | |
242 | select GPIO_PL061 if GPIOLIB | |
243 | help | |
244 | This enables support for ARM Ltd RealView boards. | |
245 | ||
246 | config ARCH_VERSATILE | |
247 | bool "ARM Ltd. Versatile family" | |
248 | select ARM_AMBA | |
249 | select ARM_VIC | |
250 | select COMMON_CLKDEV | |
251 | select ICST | |
252 | select GENERIC_CLOCKEVENTS | |
253 | select ARCH_WANT_OPTIONAL_GPIOLIB | |
254 | select PLAT_VERSATILE | |
255 | select ARM_TIMER_SP804 | |
256 | help | |
257 | This enables support for ARM Ltd Versatile board. | |
258 | ||
259 | config ARCH_VEXPRESS | |
260 | bool "ARM Ltd. Versatile Express family" | |
261 | select ARCH_WANT_OPTIONAL_GPIOLIB | |
262 | select ARM_AMBA | |
263 | select ARM_TIMER_SP804 | |
264 | select COMMON_CLKDEV | |
265 | select GENERIC_CLOCKEVENTS | |
266 | select HAVE_CLK | |
267 | select ICST | |
268 | select PLAT_VERSATILE | |
269 | help | |
270 | This enables support for the ARM Ltd Versatile Express boards. | |
271 | ||
272 | config ARCH_AT91 | |
273 | bool "Atmel AT91" | |
274 | select ARCH_REQUIRE_GPIOLIB | |
275 | select HAVE_CLK | |
276 | select ARCH_USES_GETTIMEOFFSET | |
277 | help | |
278 | This enables support for systems based on the Atmel AT91RM9200, | |
279 | AT91SAM9 and AT91CAP9 processors. | |
280 | ||
281 | config ARCH_BCMRING | |
282 | bool "Broadcom BCMRING" | |
283 | depends on MMU | |
284 | select CPU_V6 | |
285 | select ARM_AMBA | |
286 | select COMMON_CLKDEV | |
287 | select GENERIC_CLOCKEVENTS | |
288 | select ARCH_WANT_OPTIONAL_GPIOLIB | |
289 | help | |
290 | Support for Broadcom's BCMRing platform. | |
291 | ||
292 | config ARCH_CLPS711X | |
293 | bool "Cirrus Logic CLPS711x/EP721x-based" | |
294 | select CPU_ARM720T | |
295 | select ARCH_USES_GETTIMEOFFSET | |
296 | help | |
297 | Support for Cirrus Logic 711x/721x based boards. | |
298 | ||
299 | config ARCH_CNS3XXX | |
300 | bool "Cavium Networks CNS3XXX family" | |
301 | select CPU_V6 | |
302 | select GENERIC_CLOCKEVENTS | |
303 | select ARM_GIC | |
304 | help | |
305 | Support for Cavium Networks CNS3XXX platform. | |
306 | ||
307 | config ARCH_GEMINI | |
308 | bool "Cortina Systems Gemini" | |
309 | select CPU_FA526 | |
310 | select ARCH_REQUIRE_GPIOLIB | |
311 | select ARCH_USES_GETTIMEOFFSET | |
312 | help | |
313 | Support for the Cortina Systems Gemini family SoCs | |
314 | ||
315 | config ARCH_EBSA110 | |
316 | bool "EBSA-110" | |
317 | select CPU_SA110 | |
318 | select ISA | |
319 | select NO_IOPORT | |
320 | select ARCH_USES_GETTIMEOFFSET | |
321 | help | |
322 | This is an evaluation board for the StrongARM processor available | |
323 | from Digital. It has limited hardware on-board, including an | |
324 | Ethernet interface, two PCMCIA sockets, two serial ports and a | |
325 | parallel port. | |
326 | ||
327 | config ARCH_EP93XX | |
328 | bool "EP93xx-based" | |
329 | select CPU_ARM920T | |
330 | select ARM_AMBA | |
331 | select ARM_VIC | |
332 | select COMMON_CLKDEV | |
333 | select ARCH_REQUIRE_GPIOLIB | |
334 | select ARCH_HAS_HOLES_MEMORYMODEL | |
335 | select ARCH_USES_GETTIMEOFFSET | |
336 | help | |
337 | This enables support for the Cirrus EP93xx series of CPUs. | |
338 | ||
339 | config ARCH_FOOTBRIDGE | |
340 | bool "FootBridge" | |
341 | select CPU_SA110 | |
342 | select FOOTBRIDGE | |
343 | select ARCH_USES_GETTIMEOFFSET | |
344 | help | |
345 | Support for systems based on the DC21285 companion chip | |
346 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
347 | ||
348 | config ARCH_MXC | |
349 | bool "Freescale MXC/iMX-based" | |
350 | select GENERIC_CLOCKEVENTS | |
351 | select ARCH_REQUIRE_GPIOLIB | |
352 | select COMMON_CLKDEV | |
353 | help | |
354 | Support for Freescale MXC/iMX-based family of processors | |
355 | ||
356 | config ARCH_STMP3XXX | |
357 | bool "Freescale STMP3xxx" | |
358 | select CPU_ARM926T | |
359 | select COMMON_CLKDEV | |
360 | select ARCH_REQUIRE_GPIOLIB | |
361 | select GENERIC_CLOCKEVENTS | |
362 | select USB_ARCH_HAS_EHCI | |
363 | help | |
364 | Support for systems based on the Freescale 3xxx CPUs. | |
365 | ||
366 | config ARCH_NETX | |
367 | bool "Hilscher NetX based" | |
368 | select CPU_ARM926T | |
369 | select ARM_VIC | |
370 | select GENERIC_CLOCKEVENTS | |
371 | help | |
372 | This enables support for systems based on the Hilscher NetX Soc | |
373 | ||
374 | config ARCH_H720X | |
375 | bool "Hynix HMS720x-based" | |
376 | select CPU_ARM720T | |
377 | select ISA_DMA_API | |
378 | select ARCH_USES_GETTIMEOFFSET | |
379 | help | |
380 | This enables support for systems based on the Hynix HMS720x | |
381 | ||
382 | config ARCH_IOP13XX | |
383 | bool "IOP13xx-based" | |
384 | depends on MMU | |
385 | select CPU_XSC3 | |
386 | select PLAT_IOP | |
387 | select PCI | |
388 | select ARCH_SUPPORTS_MSI | |
389 | select VMSPLIT_1G | |
390 | help | |
391 | Support for Intel's IOP13XX (XScale) family of processors. | |
392 | ||
393 | config ARCH_IOP32X | |
394 | bool "IOP32x-based" | |
395 | depends on MMU | |
396 | select CPU_XSCALE | |
397 | select PLAT_IOP | |
398 | select PCI | |
399 | select ARCH_REQUIRE_GPIOLIB | |
400 | help | |
401 | Support for Intel's 80219 and IOP32X (XScale) family of | |
402 | processors. | |
403 | ||
404 | config ARCH_IOP33X | |
405 | bool "IOP33x-based" | |
406 | depends on MMU | |
407 | select CPU_XSCALE | |
408 | select PLAT_IOP | |
409 | select PCI | |
410 | select ARCH_REQUIRE_GPIOLIB | |
411 | help | |
412 | Support for Intel's IOP33X (XScale) family of processors. | |
413 | ||
414 | config ARCH_IXP23XX | |
415 | bool "IXP23XX-based" | |
416 | depends on MMU | |
417 | select CPU_XSC3 | |
418 | select PCI | |
419 | select ARCH_USES_GETTIMEOFFSET | |
420 | help | |
421 | Support for Intel's IXP23xx (XScale) family of processors. | |
422 | ||
423 | config ARCH_IXP2000 | |
424 | bool "IXP2400/2800-based" | |
425 | depends on MMU | |
426 | select CPU_XSCALE | |
427 | select PCI | |
428 | select ARCH_USES_GETTIMEOFFSET | |
429 | help | |
430 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
431 | ||
432 | config ARCH_IXP4XX | |
433 | bool "IXP4xx-based" | |
434 | depends on MMU | |
435 | select CPU_XSCALE | |
436 | select GENERIC_GPIO | |
437 | select GENERIC_CLOCKEVENTS | |
438 | select DMABOUNCE if PCI | |
439 | help | |
440 | Support for Intel's IXP4XX (XScale) family of processors. | |
441 | ||
442 | config ARCH_L7200 | |
443 | bool "LinkUp-L7200" | |
444 | select CPU_ARM720T | |
445 | select FIQ | |
446 | select ARCH_USES_GETTIMEOFFSET | |
447 | help | |
448 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
449 | L7200 Software Development Board which uses an ARM720T processor. | |
450 | Information on this board can be obtained at: | |
451 | ||
452 | <http://www.linkupsys.com/> | |
453 | ||
454 | If you have any questions or comments about the Linux kernel port | |
455 | to this board, send e-mail to <sjhill@cotw.com>. | |
456 | ||
457 | config ARCH_DOVE | |
458 | bool "Marvell Dove" | |
459 | select PCI | |
460 | select ARCH_REQUIRE_GPIOLIB | |
461 | select GENERIC_CLOCKEVENTS | |
462 | select PLAT_ORION | |
463 | help | |
464 | Support for the Marvell Dove SoC 88AP510 | |
465 | ||
466 | config ARCH_KIRKWOOD | |
467 | bool "Marvell Kirkwood" | |
468 | select CPU_FEROCEON | |
469 | select PCI | |
470 | select ARCH_REQUIRE_GPIOLIB | |
471 | select GENERIC_CLOCKEVENTS | |
472 | select PLAT_ORION | |
473 | help | |
474 | Support for the following Marvell Kirkwood series SoCs: | |
475 | 88F6180, 88F6192 and 88F6281. | |
476 | ||
477 | config ARCH_LOKI | |
478 | bool "Marvell Loki (88RC8480)" | |
479 | select CPU_FEROCEON | |
480 | select GENERIC_CLOCKEVENTS | |
481 | select PLAT_ORION | |
482 | help | |
483 | Support for the Marvell Loki (88RC8480) SoC. | |
484 | ||
485 | config ARCH_MV78XX0 | |
486 | bool "Marvell MV78xx0" | |
487 | select CPU_FEROCEON | |
488 | select PCI | |
489 | select ARCH_REQUIRE_GPIOLIB | |
490 | select GENERIC_CLOCKEVENTS | |
491 | select PLAT_ORION | |
492 | help | |
493 | Support for the following Marvell MV78xx0 series SoCs: | |
494 | MV781x0, MV782x0. | |
495 | ||
496 | config ARCH_ORION5X | |
497 | bool "Marvell Orion" | |
498 | depends on MMU | |
499 | select CPU_FEROCEON | |
500 | select PCI | |
501 | select ARCH_REQUIRE_GPIOLIB | |
502 | select GENERIC_CLOCKEVENTS | |
503 | select PLAT_ORION | |
504 | help | |
505 | Support for the following Marvell Orion 5x series SoCs: | |
506 | Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), | |
507 | Orion-2 (5281), Orion-1-90 (6183). | |
508 | ||
509 | config ARCH_MMP | |
510 | bool "Marvell PXA168/910/MMP2" | |
511 | depends on MMU | |
512 | select ARCH_REQUIRE_GPIOLIB | |
513 | select COMMON_CLKDEV | |
514 | select GENERIC_CLOCKEVENTS | |
515 | select TICK_ONESHOT | |
516 | select PLAT_PXA | |
517 | help | |
518 | Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. | |
519 | ||
520 | config ARCH_KS8695 | |
521 | bool "Micrel/Kendin KS8695" | |
522 | select CPU_ARM922T | |
523 | select ARCH_REQUIRE_GPIOLIB | |
524 | select ARCH_USES_GETTIMEOFFSET | |
525 | help | |
526 | Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based | |
527 | System-on-Chip devices. | |
528 | ||
529 | config ARCH_NS9XXX | |
530 | bool "NetSilicon NS9xxx" | |
531 | select CPU_ARM926T | |
532 | select GENERIC_GPIO | |
533 | select GENERIC_CLOCKEVENTS | |
534 | select HAVE_CLK | |
535 | help | |
536 | Say Y here if you intend to run this kernel on a NetSilicon NS9xxx | |
537 | System. | |
538 | ||
539 | <http://www.digi.com/products/microprocessors/index.jsp> | |
540 | ||
541 | config ARCH_W90X900 | |
542 | bool "Nuvoton W90X900 CPU" | |
543 | select CPU_ARM926T | |
544 | select ARCH_REQUIRE_GPIOLIB | |
545 | select COMMON_CLKDEV | |
546 | select GENERIC_CLOCKEVENTS | |
547 | help | |
548 | Support for Nuvoton (Winbond logic dept.) ARM9 processor, | |
549 | At present, the w90x900 has been renamed nuc900, regarding | |
550 | the ARM series product line, you can login the following | |
551 | link address to know more. | |
552 | ||
553 | <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ | |
554 | ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> | |
555 | ||
556 | config ARCH_NUC93X | |
557 | bool "Nuvoton NUC93X CPU" | |
558 | select CPU_ARM926T | |
559 | select COMMON_CLKDEV | |
560 | help | |
561 | Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a | |
562 | low-power and high performance MPEG-4/JPEG multimedia controller chip. | |
563 | ||
564 | config ARCH_PNX4008 | |
565 | bool "Philips Nexperia PNX4008 Mobile" | |
566 | select CPU_ARM926T | |
567 | select COMMON_CLKDEV | |
568 | select ARCH_USES_GETTIMEOFFSET | |
569 | help | |
570 | This enables support for Philips PNX4008 mobile platform. | |
571 | ||
572 | config ARCH_PXA | |
573 | bool "PXA2xx/PXA3xx-based" | |
574 | depends on MMU | |
575 | select ARCH_MTD_XIP | |
576 | select ARCH_HAS_CPUFREQ | |
577 | select COMMON_CLKDEV | |
578 | select ARCH_REQUIRE_GPIOLIB | |
579 | select GENERIC_CLOCKEVENTS | |
580 | select TICK_ONESHOT | |
581 | select PLAT_PXA | |
582 | help | |
583 | Support for Intel/Marvell's PXA2xx/PXA3xx processor line. | |
584 | ||
585 | config ARCH_MSM | |
586 | bool "Qualcomm MSM" | |
587 | select HAVE_CLK | |
588 | select GENERIC_CLOCKEVENTS | |
589 | help | |
590 | Support for Qualcomm MSM/QSD based systems. This runs on the | |
591 | apps processor of the MSM/QSD and depends on a shared memory | |
592 | interface to the modem processor which runs the baseband | |
593 | stack and controls some vital subsystems | |
594 | (clock and power control, etc). | |
595 | ||
596 | config ARCH_SHMOBILE | |
597 | bool "Renesas SH-Mobile" | |
598 | help | |
599 | Support for Renesas's SH-Mobile ARM platforms | |
600 | ||
601 | config ARCH_RPC | |
602 | bool "RiscPC" | |
603 | select ARCH_ACORN | |
604 | select FIQ | |
605 | select TIMER_ACORN | |
606 | select ARCH_MAY_HAVE_PC_FDC | |
607 | select HAVE_PATA_PLATFORM | |
608 | select ISA_DMA_API | |
609 | select NO_IOPORT | |
610 | select ARCH_SPARSEMEM_ENABLE | |
611 | select ARCH_USES_GETTIMEOFFSET | |
612 | help | |
613 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
614 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
615 | ||
616 | config ARCH_SA1100 | |
617 | bool "SA1100-based" | |
618 | select CPU_SA1100 | |
619 | select ISA | |
620 | select ARCH_SPARSEMEM_ENABLE | |
621 | select ARCH_MTD_XIP | |
622 | select ARCH_HAS_CPUFREQ | |
623 | select CPU_FREQ | |
624 | select GENERIC_CLOCKEVENTS | |
625 | select HAVE_CLK | |
626 | select TICK_ONESHOT | |
627 | select ARCH_REQUIRE_GPIOLIB | |
628 | help | |
629 | Support for StrongARM 11x0 based boards. | |
630 | ||
631 | config ARCH_S3C2410 | |
632 | bool "Samsung S3C2410, S3C2412, S3C2413, S3C2416, S3C2440, S3C2442, S3C2443, S3C2450" | |
633 | select GENERIC_GPIO | |
634 | select ARCH_HAS_CPUFREQ | |
635 | select HAVE_CLK | |
636 | select ARCH_USES_GETTIMEOFFSET | |
637 | help | |
638 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
639 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
640 | the Samsung SMDK2410 development board (and derivatives). | |
641 | ||
642 | Note, the S3C2416 and the S3C2450 are so close that they even share | |
643 | the same SoC ID code. This means that there is no seperate machine | |
644 | directory (no arch/arm/mach-s3c2450) as the S3C2416 was first. | |
645 | ||
646 | config ARCH_S3C64XX | |
647 | bool "Samsung S3C64XX" | |
648 | select PLAT_SAMSUNG | |
649 | select CPU_V6 | |
650 | select ARM_VIC | |
651 | select HAVE_CLK | |
652 | select NO_IOPORT | |
653 | select ARCH_USES_GETTIMEOFFSET | |
654 | select ARCH_HAS_CPUFREQ | |
655 | select ARCH_REQUIRE_GPIOLIB | |
656 | select SAMSUNG_CLKSRC | |
657 | select SAMSUNG_IRQ_VIC_TIMER | |
658 | select SAMSUNG_IRQ_UART | |
659 | select S3C_GPIO_TRACK | |
660 | select S3C_GPIO_PULL_UPDOWN | |
661 | select S3C_GPIO_CFG_S3C24XX | |
662 | select S3C_GPIO_CFG_S3C64XX | |
663 | select S3C_DEV_NAND | |
664 | select USB_ARCH_HAS_OHCI | |
665 | select SAMSUNG_GPIOLIB_4BIT | |
666 | help | |
667 | Samsung S3C64XX series based systems | |
668 | ||
669 | config ARCH_S5P6440 | |
670 | bool "Samsung S5P6440" | |
671 | select CPU_V6 | |
672 | select GENERIC_GPIO | |
673 | select HAVE_CLK | |
674 | select ARCH_USES_GETTIMEOFFSET | |
675 | help | |
676 | Samsung S5P6440 CPU based systems | |
677 | ||
678 | config ARCH_S5P6442 | |
679 | bool "Samsung S5P6442" | |
680 | select CPU_V6 | |
681 | select GENERIC_GPIO | |
682 | select HAVE_CLK | |
683 | select ARCH_USES_GETTIMEOFFSET | |
684 | help | |
685 | Samsung S5P6442 CPU based systems | |
686 | ||
687 | config ARCH_S5PC100 | |
688 | bool "Samsung S5PC100" | |
689 | select GENERIC_GPIO | |
690 | select HAVE_CLK | |
691 | select CPU_V7 | |
692 | select ARM_L1_CACHE_SHIFT_6 | |
693 | select ARCH_USES_GETTIMEOFFSET | |
694 | help | |
695 | Samsung S5PC100 series based systems | |
696 | ||
697 | config ARCH_S5PV210 | |
698 | bool "Samsung S5PV210/S5PC110" | |
699 | select CPU_V7 | |
700 | select GENERIC_GPIO | |
701 | select HAVE_CLK | |
702 | select ARM_L1_CACHE_SHIFT_6 | |
703 | select ARCH_USES_GETTIMEOFFSET | |
704 | help | |
705 | Samsung S5PV210/S5PC110 series based systems | |
706 | ||
707 | config ARCH_SHARK | |
708 | bool "Shark" | |
709 | select CPU_SA110 | |
710 | select ISA | |
711 | select ISA_DMA | |
712 | select ZONE_DMA | |
713 | select PCI | |
714 | select ARCH_USES_GETTIMEOFFSET | |
715 | help | |
716 | Support for the StrongARM based Digital DNARD machine, also known | |
717 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
718 | ||
719 | config ARCH_LH7A40X | |
720 | bool "Sharp LH7A40X" | |
721 | select CPU_ARM922T | |
722 | select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM | |
723 | select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM | |
724 | select ARCH_USES_GETTIMEOFFSET | |
725 | help | |
726 | Say Y here for systems based on one of the Sharp LH7A40X | |
727 | System on a Chip processors. These CPUs include an ARM922T | |
728 | core with a wide array of integrated devices for | |
729 | hand-held and low-power applications. | |
730 | ||
731 | config ARCH_U300 | |
732 | bool "ST-Ericsson U300 Series" | |
733 | depends on MMU | |
734 | select CPU_ARM926T | |
735 | select HAVE_TCM | |
736 | select ARM_AMBA | |
737 | select ARM_VIC | |
738 | select GENERIC_CLOCKEVENTS | |
739 | select COMMON_CLKDEV | |
740 | select GENERIC_GPIO | |
741 | help | |
742 | Support for ST-Ericsson U300 series mobile platforms. | |
743 | ||
744 | config ARCH_U8500 | |
745 | bool "ST-Ericsson U8500 Series" | |
746 | select CPU_V7 | |
747 | select ARM_AMBA | |
748 | select GENERIC_CLOCKEVENTS | |
749 | select COMMON_CLKDEV | |
750 | select ARCH_REQUIRE_GPIOLIB | |
751 | help | |
752 | Support for ST-Ericsson's Ux500 architecture | |
753 | ||
754 | config ARCH_NOMADIK | |
755 | bool "STMicroelectronics Nomadik" | |
756 | select ARM_AMBA | |
757 | select ARM_VIC | |
758 | select CPU_ARM926T | |
759 | select COMMON_CLKDEV | |
760 | select GENERIC_CLOCKEVENTS | |
761 | select ARCH_REQUIRE_GPIOLIB | |
762 | help | |
763 | Support for the Nomadik platform by ST-Ericsson | |
764 | ||
765 | config ARCH_DAVINCI | |
766 | bool "TI DaVinci" | |
767 | select GENERIC_CLOCKEVENTS | |
768 | select ARCH_REQUIRE_GPIOLIB | |
769 | select ZONE_DMA | |
770 | select HAVE_IDE | |
771 | select COMMON_CLKDEV | |
772 | select GENERIC_ALLOCATOR | |
773 | select ARCH_HAS_HOLES_MEMORYMODEL | |
774 | help | |
775 | Support for TI's DaVinci platform. | |
776 | ||
777 | config ARCH_OMAP | |
778 | bool "TI OMAP" | |
779 | select HAVE_CLK | |
780 | select ARCH_REQUIRE_GPIOLIB | |
781 | select ARCH_HAS_CPUFREQ | |
782 | select GENERIC_CLOCKEVENTS | |
783 | select ARCH_HAS_HOLES_MEMORYMODEL | |
784 | help | |
785 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
786 | ||
787 | config PLAT_SPEAR | |
788 | bool "ST SPEAr" | |
789 | select ARM_AMBA | |
790 | select ARCH_REQUIRE_GPIOLIB | |
791 | select COMMON_CLKDEV | |
792 | select GENERIC_CLOCKEVENTS | |
793 | select HAVE_CLK | |
794 | help | |
795 | Support for ST's SPEAr platform (SPEAr3xx, SPEAr6xx and SPEAr13xx). | |
796 | ||
797 | endchoice | |
798 | ||
799 | # | |
800 | # This is sorted alphabetically by mach-* pathname. However, plat-* | |
801 | # Kconfigs may be included either alphabetically (according to the | |
802 | # plat- suffix) or along side the corresponding mach-* source. | |
803 | # | |
804 | source "arch/arm/mach-aaec2000/Kconfig" | |
805 | ||
806 | source "arch/arm/mach-at91/Kconfig" | |
807 | ||
808 | source "arch/arm/mach-bcmring/Kconfig" | |
809 | ||
810 | source "arch/arm/mach-clps711x/Kconfig" | |
811 | ||
812 | source "arch/arm/mach-cns3xxx/Kconfig" | |
813 | ||
814 | source "arch/arm/mach-davinci/Kconfig" | |
815 | ||
816 | source "arch/arm/mach-dove/Kconfig" | |
817 | ||
818 | source "arch/arm/mach-ep93xx/Kconfig" | |
819 | ||
820 | source "arch/arm/mach-footbridge/Kconfig" | |
821 | ||
822 | source "arch/arm/mach-gemini/Kconfig" | |
823 | ||
824 | source "arch/arm/mach-h720x/Kconfig" | |
825 | ||
826 | source "arch/arm/mach-integrator/Kconfig" | |
827 | ||
828 | source "arch/arm/mach-iop32x/Kconfig" | |
829 | ||
830 | source "arch/arm/mach-iop33x/Kconfig" | |
831 | ||
832 | source "arch/arm/mach-iop13xx/Kconfig" | |
833 | ||
834 | source "arch/arm/mach-ixp4xx/Kconfig" | |
835 | ||
836 | source "arch/arm/mach-ixp2000/Kconfig" | |
837 | ||
838 | source "arch/arm/mach-ixp23xx/Kconfig" | |
839 | ||
840 | source "arch/arm/mach-kirkwood/Kconfig" | |
841 | ||
842 | source "arch/arm/mach-ks8695/Kconfig" | |
843 | ||
844 | source "arch/arm/mach-lh7a40x/Kconfig" | |
845 | ||
846 | source "arch/arm/mach-loki/Kconfig" | |
847 | ||
848 | source "arch/arm/mach-msm/Kconfig" | |
849 | ||
850 | source "arch/arm/mach-mv78xx0/Kconfig" | |
851 | ||
852 | source "arch/arm/plat-mxc/Kconfig" | |
853 | ||
854 | source "arch/arm/mach-netx/Kconfig" | |
855 | ||
856 | source "arch/arm/mach-nomadik/Kconfig" | |
857 | source "arch/arm/plat-nomadik/Kconfig" | |
858 | ||
859 | source "arch/arm/mach-ns9xxx/Kconfig" | |
860 | ||
861 | source "arch/arm/mach-nuc93x/Kconfig" | |
862 | ||
863 | source "arch/arm/plat-omap/Kconfig" | |
864 | ||
865 | source "arch/arm/mach-omap1/Kconfig" | |
866 | ||
867 | source "arch/arm/mach-omap2/Kconfig" | |
868 | ||
869 | source "arch/arm/mach-orion5x/Kconfig" | |
870 | ||
871 | source "arch/arm/mach-pxa/Kconfig" | |
872 | source "arch/arm/plat-pxa/Kconfig" | |
873 | ||
874 | source "arch/arm/mach-mmp/Kconfig" | |
875 | ||
876 | source "arch/arm/mach-realview/Kconfig" | |
877 | ||
878 | source "arch/arm/mach-sa1100/Kconfig" | |
879 | ||
880 | source "arch/arm/plat-samsung/Kconfig" | |
881 | source "arch/arm/plat-s3c24xx/Kconfig" | |
882 | source "arch/arm/plat-s5p/Kconfig" | |
883 | ||
884 | source "arch/arm/plat-spear/Kconfig" | |
885 | ||
886 | if ARCH_S3C2410 | |
887 | source "arch/arm/mach-s3c2400/Kconfig" | |
888 | source "arch/arm/mach-s3c2410/Kconfig" | |
889 | source "arch/arm/mach-s3c2412/Kconfig" | |
890 | source "arch/arm/mach-s3c2416/Kconfig" | |
891 | source "arch/arm/mach-s3c2440/Kconfig" | |
892 | source "arch/arm/mach-s3c2443/Kconfig" | |
893 | endif | |
894 | ||
895 | if ARCH_S3C64XX | |
896 | source "arch/arm/mach-s3c64xx/Kconfig" | |
897 | endif | |
898 | ||
899 | source "arch/arm/mach-s5p6440/Kconfig" | |
900 | ||
901 | source "arch/arm/mach-s5p6442/Kconfig" | |
902 | ||
903 | source "arch/arm/mach-s5pc100/Kconfig" | |
904 | ||
905 | source "arch/arm/mach-s5pv210/Kconfig" | |
906 | ||
907 | source "arch/arm/mach-shmobile/Kconfig" | |
908 | ||
909 | source "arch/arm/plat-stmp3xxx/Kconfig" | |
910 | ||
911 | source "arch/arm/mach-u300/Kconfig" | |
912 | ||
913 | source "arch/arm/mach-ux500/Kconfig" | |
914 | ||
915 | source "arch/arm/mach-versatile/Kconfig" | |
916 | ||
917 | source "arch/arm/mach-vexpress/Kconfig" | |
918 | ||
919 | source "arch/arm/mach-w90x900/Kconfig" | |
920 | ||
921 | # Definitions to make life easier | |
922 | config ARCH_ACORN | |
923 | bool | |
924 | ||
925 | config PLAT_IOP | |
926 | bool | |
927 | select GENERIC_CLOCKEVENTS | |
928 | ||
929 | config PLAT_ORION | |
930 | bool | |
931 | ||
932 | config PLAT_PXA | |
933 | bool | |
934 | ||
935 | config PLAT_VERSATILE | |
936 | bool | |
937 | ||
938 | config ARM_TIMER_SP804 | |
939 | bool | |
940 | ||
941 | source arch/arm/mm/Kconfig | |
942 | ||
943 | config IWMMXT | |
944 | bool "Enable iWMMXt support" | |
945 | depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK | |
946 | default y if PXA27x || PXA3xx || ARCH_MMP | |
947 | help | |
948 | Enable support for iWMMXt context switching at run time if | |
949 | running on a CPU that supports it. | |
950 | ||
951 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER | |
952 | config XSCALE_PMU | |
953 | bool | |
954 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
955 | default y | |
956 | ||
957 | config CPU_HAS_PMU | |
958 | depends on (CPU_V6 || CPU_V7 || XSCALE_PMU) && \ | |
959 | (!ARCH_OMAP3 || OMAP3_EMU) | |
960 | default y | |
961 | bool | |
962 | ||
963 | if !MMU | |
964 | source "arch/arm/Kconfig-nommu" | |
965 | endif | |
966 | ||
967 | config ARM_ERRATA_411920 | |
968 | bool "ARM errata: Invalidation of the Instruction Cache operation can fail" | |
969 | depends on CPU_V6 && !SMP | |
970 | help | |
971 | Invalidation of the Instruction Cache operation can | |
972 | fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. | |
973 | It does not affect the MPCore. This option enables the ARM Ltd. | |
974 | recommended workaround. | |
975 | ||
976 | config ARM_ERRATA_430973 | |
977 | bool "ARM errata: Stale prediction on replaced interworking branch" | |
978 | depends on CPU_V7 | |
979 | help | |
980 | This option enables the workaround for the 430973 Cortex-A8 | |
981 | (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb | |
982 | interworking branch is replaced with another code sequence at the | |
983 | same virtual address, whether due to self-modifying code or virtual | |
984 | to physical address re-mapping, Cortex-A8 does not recover from the | |
985 | stale interworking branch prediction. This results in Cortex-A8 | |
986 | executing the new code sequence in the incorrect ARM or Thumb state. | |
987 | The workaround enables the BTB/BTAC operations by setting ACTLR.IBE | |
988 | and also flushes the branch target cache at every context switch. | |
989 | Note that setting specific bits in the ACTLR register may not be | |
990 | available in non-secure mode. | |
991 | ||
992 | config ARM_ERRATA_458693 | |
993 | bool "ARM errata: Processor deadlock when a false hazard is created" | |
994 | depends on CPU_V7 | |
995 | help | |
996 | This option enables the workaround for the 458693 Cortex-A8 (r2p0) | |
997 | erratum. For very specific sequences of memory operations, it is | |
998 | possible for a hazard condition intended for a cache line to instead | |
999 | be incorrectly associated with a different cache line. This false | |
1000 | hazard might then cause a processor deadlock. The workaround enables | |
1001 | the L1 caching of the NEON accesses and disables the PLD instruction | |
1002 | in the ACTLR register. Note that setting specific bits in the ACTLR | |
1003 | register may not be available in non-secure mode. | |
1004 | ||
1005 | config ARM_ERRATA_460075 | |
1006 | bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" | |
1007 | depends on CPU_V7 | |
1008 | help | |
1009 | This option enables the workaround for the 460075 Cortex-A8 (r2p0) | |
1010 | erratum. Any asynchronous access to the L2 cache may encounter a | |
1011 | situation in which recent store transactions to the L2 cache are lost | |
1012 | and overwritten with stale memory contents from external memory. The | |
1013 | workaround disables the write-allocate mode for the L2 cache via the | |
1014 | ACTLR register. Note that setting specific bits in the ACTLR register | |
1015 | may not be available in non-secure mode. | |
1016 | ||
1017 | config PL310_ERRATA_588369 | |
1018 | bool "Clean & Invalidate maintenance operations do not invalidate clean lines" | |
1019 | depends on CACHE_L2X0 && ARCH_OMAP4 | |
1020 | help | |
1021 | The PL310 L2 cache controller implements three types of Clean & | |
1022 | Invalidate maintenance operations: by Physical Address | |
1023 | (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). | |
1024 | They are architecturally defined to behave as the execution of a | |
1025 | clean operation followed immediately by an invalidate operation, | |
1026 | both performing to the same memory location. This functionality | |
1027 | is not correctly implemented in PL310 as clean lines are not | |
1028 | invalidated as a result of these operations. Note that this errata | |
1029 | uses Texas Instrument's secure monitor api. | |
1030 | endmenu | |
1031 | ||
1032 | source "arch/arm/common/Kconfig" | |
1033 | ||
1034 | config FORCE_MAX_ZONEORDER | |
1035 | int | |
1036 | depends on SA1111 | |
1037 | default "9" | |
1038 | ||
1039 | menu "Bus support" | |
1040 | ||
1041 | config ARM_AMBA | |
1042 | bool | |
1043 | ||
1044 | config ISA | |
1045 | bool | |
1046 | help | |
1047 | Find out whether you have ISA slots on your motherboard. ISA is the | |
1048 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
1049 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
1050 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
1051 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
1052 | ||
1053 | # Select ISA DMA controller support | |
1054 | config ISA_DMA | |
1055 | bool | |
1056 | select ISA_DMA_API | |
1057 | ||
1058 | # Select ISA DMA interface | |
1059 | config ISA_DMA_API | |
1060 | bool | |
1061 | ||
1062 | config PCI | |
1063 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE | |
1064 | help | |
1065 | Find out whether you have a PCI motherboard. PCI is the name of a | |
1066 | bus system, i.e. the way the CPU talks to the other stuff inside | |
1067 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
1068 | VESA. If you have PCI, say Y, otherwise N. | |
1069 | ||
1070 | config PCI_DOMAINS | |
1071 | bool | |
1072 | depends on PCI | |
1073 | ||
1074 | config PCI_SYSCALL | |
1075 | def_bool PCI | |
1076 | ||
1077 | # Select the host bridge type | |
1078 | config PCI_HOST_VIA82C505 | |
1079 | bool | |
1080 | depends on PCI && ARCH_SHARK | |
1081 | default y | |
1082 | ||
1083 | config PCI_HOST_ITE8152 | |
1084 | bool | |
1085 | depends on PCI && MACH_ARMCORE | |
1086 | default y | |
1087 | select DMABOUNCE | |
1088 | ||
1089 | source "drivers/pci/Kconfig" | |
1090 | ||
1091 | source "drivers/pcmcia/Kconfig" | |
1092 | ||
1093 | endmenu | |
1094 | ||
1095 | menu "Kernel Features" | |
1096 | ||
1097 | source "kernel/time/Kconfig" | |
1098 | ||
1099 | config SMP | |
1100 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
1101 | depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ | |
1102 | MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\ | |
1103 | ARCH_U8500 || ARCH_VEXPRESS_CA9X4) | |
1104 | depends on GENERIC_CLOCKEVENTS | |
1105 | select USE_GENERIC_SMP_HELPERS | |
1106 | select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500 || ARCH_VEXPRESS_CA9X4) | |
1107 | help | |
1108 | This enables support for systems with more than one CPU. If you have | |
1109 | a system with only one CPU, like most personal computers, say N. If | |
1110 | you have a system with more than one CPU, say Y. | |
1111 | ||
1112 | If you say N here, the kernel will run on single and multiprocessor | |
1113 | machines, but will use only one CPU of a multiprocessor machine. If | |
1114 | you say Y here, the kernel will run on many, but not all, single | |
1115 | processor machines. On a single processor machine, the kernel will | |
1116 | run faster if you say N here. | |
1117 | ||
1118 | See also <file:Documentation/i386/IO-APIC.txt>, | |
1119 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at | |
1120 | <http://www.linuxdoc.org/docs.html#howto>. | |
1121 | ||
1122 | If you don't know what to do here, say N. | |
1123 | ||
1124 | config HAVE_ARM_SCU | |
1125 | bool | |
1126 | depends on SMP | |
1127 | help | |
1128 | This option enables support for the ARM system coherency unit | |
1129 | ||
1130 | config HAVE_ARM_TWD | |
1131 | bool | |
1132 | depends on SMP | |
1133 | help | |
1134 | This options enables support for the ARM timer and watchdog unit | |
1135 | ||
1136 | choice | |
1137 | prompt "Memory split" | |
1138 | default VMSPLIT_3G | |
1139 | help | |
1140 | Select the desired split between kernel and user memory. | |
1141 | ||
1142 | If you are not absolutely sure what you are doing, leave this | |
1143 | option alone! | |
1144 | ||
1145 | config VMSPLIT_3G | |
1146 | bool "3G/1G user/kernel split" | |
1147 | config VMSPLIT_2G | |
1148 | bool "2G/2G user/kernel split" | |
1149 | config VMSPLIT_1G | |
1150 | bool "1G/3G user/kernel split" | |
1151 | endchoice | |
1152 | ||
1153 | config PAGE_OFFSET | |
1154 | hex | |
1155 | default 0x40000000 if VMSPLIT_1G | |
1156 | default 0x80000000 if VMSPLIT_2G | |
1157 | default 0xC0000000 | |
1158 | ||
1159 | config NR_CPUS | |
1160 | int "Maximum number of CPUs (2-32)" | |
1161 | range 2 32 | |
1162 | depends on SMP | |
1163 | default "4" | |
1164 | ||
1165 | config HOTPLUG_CPU | |
1166 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
1167 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
1168 | help | |
1169 | Say Y here to experiment with turning CPUs off and on. CPUs | |
1170 | can be controlled through /sys/devices/system/cpu. | |
1171 | ||
1172 | config LOCAL_TIMERS | |
1173 | bool "Use local timer interrupts" | |
1174 | depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ | |
1175 | REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) | |
1176 | default y | |
1177 | select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) | |
1178 | help | |
1179 | Enable support for local timers on SMP platforms, rather then the | |
1180 | legacy IPI broadcast method. Local timers allows the system | |
1181 | accounting to be spread across the timer interval, preventing a | |
1182 | "thundering herd" at every timer tick. | |
1183 | ||
1184 | source kernel/Kconfig.preempt | |
1185 | ||
1186 | config HZ | |
1187 | int | |
1188 | default 128 if ARCH_L7200 | |
1189 | default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 || ARCH_S5P6442 || ARCH_S5PV210 | |
1190 | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER | |
1191 | default AT91_TIMER_HZ if ARCH_AT91 | |
1192 | default 100 | |
1193 | ||
1194 | config THUMB2_KERNEL | |
1195 | bool "Compile the kernel in Thumb-2 mode" | |
1196 | depends on CPU_V7 && EXPERIMENTAL | |
1197 | select AEABI | |
1198 | select ARM_ASM_UNIFIED | |
1199 | help | |
1200 | By enabling this option, the kernel will be compiled in | |
1201 | Thumb-2 mode. A compiler/assembler that understand the unified | |
1202 | ARM-Thumb syntax is needed. | |
1203 | ||
1204 | If unsure, say N. | |
1205 | ||
1206 | config ARM_ASM_UNIFIED | |
1207 | bool | |
1208 | ||
1209 | config AEABI | |
1210 | bool "Use the ARM EABI to compile the kernel" | |
1211 | help | |
1212 | This option allows for the kernel to be compiled using the latest | |
1213 | ARM ABI (aka EABI). This is only useful if you are using a user | |
1214 | space environment that is also compiled with EABI. | |
1215 | ||
1216 | Since there are major incompatibilities between the legacy ABI and | |
1217 | EABI, especially with regard to structure member alignment, this | |
1218 | option also changes the kernel syscall calling convention to | |
1219 | disambiguate both ABIs and allow for backward compatibility support | |
1220 | (selected with CONFIG_OABI_COMPAT). | |
1221 | ||
1222 | To use this you need GCC version 4.0.0 or later. | |
1223 | ||
1224 | config OABI_COMPAT | |
1225 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" | |
1226 | depends on AEABI && EXPERIMENTAL | |
1227 | default y | |
1228 | help | |
1229 | This option preserves the old syscall interface along with the | |
1230 | new (ARM EABI) one. It also provides a compatibility layer to | |
1231 | intercept syscalls that have structure arguments which layout | |
1232 | in memory differs between the legacy ABI and the new ARM EABI | |
1233 | (only for non "thumb" binaries). This option adds a tiny | |
1234 | overhead to all syscalls and produces a slightly larger kernel. | |
1235 | If you know you'll be using only pure EABI user space then you | |
1236 | can say N here. If this option is not selected and you attempt | |
1237 | to execute a legacy ABI binary then the result will be | |
1238 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
1239 | at all). If in doubt say Y. | |
1240 | ||
1241 | config ARCH_HAS_HOLES_MEMORYMODEL | |
1242 | bool | |
1243 | ||
1244 | # Discontigmem is deprecated | |
1245 | config ARCH_DISCONTIGMEM_ENABLE | |
1246 | bool | |
1247 | ||
1248 | config ARCH_SPARSEMEM_ENABLE | |
1249 | bool | |
1250 | ||
1251 | config ARCH_SPARSEMEM_DEFAULT | |
1252 | def_bool ARCH_SPARSEMEM_ENABLE | |
1253 | ||
1254 | config ARCH_SELECT_MEMORY_MODEL | |
1255 | def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE | |
1256 | ||
1257 | config NODES_SHIFT | |
1258 | int | |
1259 | default "4" if ARCH_LH7A40X | |
1260 | default "2" | |
1261 | depends on NEED_MULTIPLE_NODES | |
1262 | ||
1263 | config HIGHMEM | |
1264 | bool "High Memory Support (EXPERIMENTAL)" | |
1265 | depends on MMU && EXPERIMENTAL | |
1266 | help | |
1267 | The address space of ARM processors is only 4 Gigabytes large | |
1268 | and it has to accommodate user address space, kernel address | |
1269 | space as well as some memory mapped IO. That means that, if you | |
1270 | have a large amount of physical memory and/or IO, not all of the | |
1271 | memory can be "permanently mapped" by the kernel. The physical | |
1272 | memory that is not permanently mapped is called "high memory". | |
1273 | ||
1274 | Depending on the selected kernel/user memory split, minimum | |
1275 | vmalloc space and actual amount of RAM, you may not need this | |
1276 | option which should result in a slightly faster kernel. | |
1277 | ||
1278 | If unsure, say n. | |
1279 | ||
1280 | config HIGHPTE | |
1281 | bool "Allocate 2nd-level pagetables from highmem" | |
1282 | depends on HIGHMEM | |
1283 | depends on !OUTER_CACHE | |
1284 | ||
1285 | config HW_PERF_EVENTS | |
1286 | bool "Enable hardware performance counter support for perf events" | |
1287 | depends on PERF_EVENTS && CPU_HAS_PMU | |
1288 | default y | |
1289 | help | |
1290 | Enable hardware performance counter support for perf events. If | |
1291 | disabled, perf events will use software events only. | |
1292 | ||
1293 | source "mm/Kconfig" | |
1294 | ||
1295 | config LEDS | |
1296 | bool "Timer and CPU usage LEDs" | |
1297 | depends on ARCH_CDB89712 || ARCH_EBSA110 || \ | |
1298 | ARCH_EBSA285 || ARCH_INTEGRATOR || \ | |
1299 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
1300 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
1301 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ | |
1302 | ARCH_AT91 || ARCH_DAVINCI || \ | |
1303 | ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW | |
1304 | help | |
1305 | If you say Y here, the LEDs on your machine will be used | |
1306 | to provide useful information about your current system status. | |
1307 | ||
1308 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
1309 | be able to select which LEDs are active using the options below. If | |
1310 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
1311 | red LED will simply flash regularly to indicate that the system is | |
1312 | still functional. It is safe to say Y here if you have a CATS | |
1313 | system, but the driver will do nothing. | |
1314 | ||
1315 | config LEDS_TIMER | |
1316 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
1317 | OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ | |
1318 | || MACH_OMAP_PERSEUS2 | |
1319 | depends on LEDS | |
1320 | depends on !GENERIC_CLOCKEVENTS | |
1321 | default y if ARCH_EBSA110 | |
1322 | help | |
1323 | If you say Y here, one of the system LEDs (the green one on the | |
1324 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
1325 | will flash regularly to indicate that the system is still | |
1326 | operational. This is mainly useful to kernel hackers who are | |
1327 | debugging unstable kernels. | |
1328 | ||
1329 | The LART uses the same LED for both Timer LED and CPU usage LED | |
1330 | functions. You may choose to use both, but the Timer LED function | |
1331 | will overrule the CPU usage LED. | |
1332 | ||
1333 | config LEDS_CPU | |
1334 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
1335 | !ARCH_OMAP) \ | |
1336 | || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ | |
1337 | || MACH_OMAP_PERSEUS2 | |
1338 | depends on LEDS | |
1339 | help | |
1340 | If you say Y here, the red LED will be used to give a good real | |
1341 | time indication of CPU usage, by lighting whenever the idle task | |
1342 | is not currently executing. | |
1343 | ||
1344 | The LART uses the same LED for both Timer LED and CPU usage LED | |
1345 | functions. You may choose to use both, but the Timer LED function | |
1346 | will overrule the CPU usage LED. | |
1347 | ||
1348 | config ALIGNMENT_TRAP | |
1349 | bool | |
1350 | depends on CPU_CP15_MMU | |
1351 | default y if !ARCH_EBSA110 | |
1352 | select HAVE_PROC_CPU if PROC_FS | |
1353 | help | |
1354 | ARM processors cannot fetch/store information which is not | |
1355 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an | |
1356 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
1357 | fetch/store instructions will be emulated in software if you say | |
1358 | here, which has a severe performance impact. This is necessary for | |
1359 | correct operation of some network protocols. With an IP-only | |
1360 | configuration it is safe to say N, otherwise say Y. | |
1361 | ||
1362 | config UACCESS_WITH_MEMCPY | |
1363 | bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" | |
1364 | depends on MMU && EXPERIMENTAL | |
1365 | default y if CPU_FEROCEON | |
1366 | help | |
1367 | Implement faster copy_to_user and clear_user methods for CPU | |
1368 | cores where a 8-word STM instruction give significantly higher | |
1369 | memory write throughput than a sequence of individual 32bit stores. | |
1370 | ||
1371 | A possible side effect is a slight increase in scheduling latency | |
1372 | between threads sharing the same address space if they invoke | |
1373 | such copy operations with large buffers. | |
1374 | ||
1375 | However, if the CPU data cache is using a write-allocate mode, | |
1376 | this option is unlikely to provide any performance gain. | |
1377 | ||
1378 | endmenu | |
1379 | ||
1380 | menu "Boot options" | |
1381 | ||
1382 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
1383 | # TEXT and BSS so we preserve their values in the config files. | |
1384 | config ZBOOT_ROM_TEXT | |
1385 | hex "Compressed ROM boot loader base address" | |
1386 | default "0" | |
1387 | help | |
1388 | The physical address at which the ROM-able zImage is to be | |
1389 | placed in the target. Platforms which normally make use of | |
1390 | ROM-able zImage formats normally set this to a suitable | |
1391 | value in their defconfig file. | |
1392 | ||
1393 | If ZBOOT_ROM is not enabled, this has no effect. | |
1394 | ||
1395 | config ZBOOT_ROM_BSS | |
1396 | hex "Compressed ROM boot loader BSS address" | |
1397 | default "0" | |
1398 | help | |
1399 | The base address of an area of read/write memory in the target | |
1400 | for the ROM-able zImage which must be available while the | |
1401 | decompressor is running. It must be large enough to hold the | |
1402 | entire decompressed kernel plus an additional 128 KiB. | |
1403 | Platforms which normally make use of ROM-able zImage formats | |
1404 | normally set this to a suitable value in their defconfig file. | |
1405 | ||
1406 | If ZBOOT_ROM is not enabled, this has no effect. | |
1407 | ||
1408 | config ZBOOT_ROM | |
1409 | bool "Compressed boot loader in ROM/flash" | |
1410 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
1411 | help | |
1412 | Say Y here if you intend to execute your compressed kernel image | |
1413 | (zImage) directly from ROM or flash. If unsure, say N. | |
1414 | ||
1415 | config CMDLINE | |
1416 | string "Default kernel command string" | |
1417 | default "" | |
1418 | help | |
1419 | On some architectures (EBSA110 and CATS), there is currently no way | |
1420 | for the boot loader to pass arguments to the kernel. For these | |
1421 | architectures, you should supply some command-line options at build | |
1422 | time by entering them here. As a minimum, you should specify the | |
1423 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
1424 | ||
1425 | config CMDLINE_FORCE | |
1426 | bool "Always use the default kernel command string" | |
1427 | depends on CMDLINE != "" | |
1428 | help | |
1429 | Always use the default kernel command string, even if the boot | |
1430 | loader passes other arguments to the kernel. | |
1431 | This is useful if you cannot or don't want to change the | |
1432 | command-line options your boot loader passes to the kernel. | |
1433 | ||
1434 | If unsure, say N. | |
1435 | ||
1436 | config XIP_KERNEL | |
1437 | bool "Kernel Execute-In-Place from ROM" | |
1438 | depends on !ZBOOT_ROM | |
1439 | help | |
1440 | Execute-In-Place allows the kernel to run from non-volatile storage | |
1441 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
1442 | space since the text section of the kernel is not loaded from flash | |
1443 | to RAM. Read-write sections, such as the data section and stack, | |
1444 | are still copied to RAM. The XIP kernel is not compressed since | |
1445 | it has to run directly from flash, so it will take more space to | |
1446 | store it. The flash address used to link the kernel object files, | |
1447 | and for storing it, is configuration dependent. Therefore, if you | |
1448 | say Y here, you must know the proper physical address where to | |
1449 | store the kernel image depending on your own flash memory usage. | |
1450 | ||
1451 | Also note that the make target becomes "make xipImage" rather than | |
1452 | "make zImage" or "make Image". The final kernel binary to put in | |
1453 | ROM memory will be arch/arm/boot/xipImage. | |
1454 | ||
1455 | If unsure, say N. | |
1456 | ||
1457 | config XIP_PHYS_ADDR | |
1458 | hex "XIP Kernel Physical Location" | |
1459 | depends on XIP_KERNEL | |
1460 | default "0x00080000" | |
1461 | help | |
1462 | This is the physical address in your flash memory the kernel will | |
1463 | be linked for and stored to. This address is dependent on your | |
1464 | own flash usage. | |
1465 | ||
1466 | config KEXEC | |
1467 | bool "Kexec system call (EXPERIMENTAL)" | |
1468 | depends on EXPERIMENTAL | |
1469 | help | |
1470 | kexec is a system call that implements the ability to shutdown your | |
1471 | current kernel, and to start another kernel. It is like a reboot | |
1472 | but it is independent of the system firmware. And like a reboot | |
1473 | you can start any kernel with it, not just Linux. | |
1474 | ||
1475 | It is an ongoing process to be certain the hardware in a machine | |
1476 | is properly shutdown, so do not be surprised if this code does not | |
1477 | initially work for you. It may help to enable device hotplugging | |
1478 | support. | |
1479 | ||
1480 | config ATAGS_PROC | |
1481 | bool "Export atags in procfs" | |
1482 | depends on KEXEC | |
1483 | default y | |
1484 | help | |
1485 | Should the atags used to boot the kernel be exported in an "atags" | |
1486 | file in procfs. Useful with kexec. | |
1487 | ||
1488 | endmenu | |
1489 | ||
1490 | menu "CPU Power Management" | |
1491 | ||
1492 | if ARCH_HAS_CPUFREQ | |
1493 | ||
1494 | source "drivers/cpufreq/Kconfig" | |
1495 | ||
1496 | config CPU_FREQ_SA1100 | |
1497 | bool | |
1498 | ||
1499 | config CPU_FREQ_SA1110 | |
1500 | bool | |
1501 | ||
1502 | config CPU_FREQ_INTEGRATOR | |
1503 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
1504 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
1505 | default y | |
1506 | help | |
1507 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
1508 | ||
1509 | For details, take a look at <file:Documentation/cpu-freq>. | |
1510 | ||
1511 | If in doubt, say Y. | |
1512 | ||
1513 | config CPU_FREQ_PXA | |
1514 | bool | |
1515 | depends on CPU_FREQ && ARCH_PXA && PXA25x | |
1516 | default y | |
1517 | select CPU_FREQ_DEFAULT_GOV_USERSPACE | |
1518 | ||
1519 | config CPU_FREQ_S3C64XX | |
1520 | bool "CPUfreq support for Samsung S3C64XX CPUs" | |
1521 | depends on CPU_FREQ && CPU_S3C6410 | |
1522 | ||
1523 | config CPU_FREQ_S3C | |
1524 | bool | |
1525 | help | |
1526 | Internal configuration node for common cpufreq on Samsung SoC | |
1527 | ||
1528 | config CPU_FREQ_S3C24XX | |
1529 | bool "CPUfreq driver for Samsung S3C24XX series CPUs" | |
1530 | depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL | |
1531 | select CPU_FREQ_S3C | |
1532 | help | |
1533 | This enables the CPUfreq driver for the Samsung S3C24XX family | |
1534 | of CPUs. | |
1535 | ||
1536 | For details, take a look at <file:Documentation/cpu-freq>. | |
1537 | ||
1538 | If in doubt, say N. | |
1539 | ||
1540 | config CPU_FREQ_S3C24XX_PLL | |
1541 | bool "Support CPUfreq changing of PLL frequency" | |
1542 | depends on CPU_FREQ_S3C24XX && EXPERIMENTAL | |
1543 | help | |
1544 | Compile in support for changing the PLL frequency from the | |
1545 | S3C24XX series CPUfreq driver. The PLL takes time to settle | |
1546 | after a frequency change, so by default it is not enabled. | |
1547 | ||
1548 | This also means that the PLL tables for the selected CPU(s) will | |
1549 | be built which may increase the size of the kernel image. | |
1550 | ||
1551 | config CPU_FREQ_S3C24XX_DEBUG | |
1552 | bool "Debug CPUfreq Samsung driver core" | |
1553 | depends on CPU_FREQ_S3C24XX | |
1554 | help | |
1555 | Enable s3c_freq_dbg for the Samsung S3C CPUfreq core | |
1556 | ||
1557 | config CPU_FREQ_S3C24XX_IODEBUG | |
1558 | bool "Debug CPUfreq Samsung driver IO timing" | |
1559 | depends on CPU_FREQ_S3C24XX | |
1560 | help | |
1561 | Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core | |
1562 | ||
1563 | config CPU_FREQ_S3C24XX_DEBUGFS | |
1564 | bool "Export debugfs for CPUFreq" | |
1565 | depends on CPU_FREQ_S3C24XX && DEBUG_FS | |
1566 | help | |
1567 | Export status information via debugfs. | |
1568 | ||
1569 | endif | |
1570 | ||
1571 | source "drivers/cpuidle/Kconfig" | |
1572 | ||
1573 | endmenu | |
1574 | ||
1575 | menu "Floating point emulation" | |
1576 | ||
1577 | comment "At least one emulation must be selected" | |
1578 | ||
1579 | config FPE_NWFPE | |
1580 | bool "NWFPE math emulation" | |
1581 | depends on !AEABI || OABI_COMPAT | |
1582 | ---help--- | |
1583 | Say Y to include the NWFPE floating point emulator in the kernel. | |
1584 | This is necessary to run most binaries. Linux does not currently | |
1585 | support floating point hardware so you need to say Y here even if | |
1586 | your machine has an FPA or floating point co-processor podule. | |
1587 | ||
1588 | You may say N here if you are going to load the Acorn FPEmulator | |
1589 | early in the bootup. | |
1590 | ||
1591 | config FPE_NWFPE_XP | |
1592 | bool "Support extended precision" | |
1593 | depends on FPE_NWFPE | |
1594 | help | |
1595 | Say Y to include 80-bit support in the kernel floating-point | |
1596 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
1597 | Note that gcc does not generate 80-bit operations by default, | |
1598 | so in most cases this option only enlarges the size of the | |
1599 | floating point emulator without any good reason. | |
1600 | ||
1601 | You almost surely want to say N here. | |
1602 | ||
1603 | config FPE_FASTFPE | |
1604 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
1605 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL | |
1606 | ---help--- | |
1607 | Say Y here to include the FAST floating point emulator in the kernel. | |
1608 | This is an experimental much faster emulator which now also has full | |
1609 | precision for the mantissa. It does not support any exceptions. | |
1610 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
1611 | ||
1612 | It should be sufficient for most programs. It may be not suitable | |
1613 | for scientific calculations, but you have to check this for yourself. | |
1614 | If you do not feel you need a faster FP emulation you should better | |
1615 | choose NWFPE. | |
1616 | ||
1617 | config VFP | |
1618 | bool "VFP-format floating point maths" | |
1619 | depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON | |
1620 | help | |
1621 | Say Y to include VFP support code in the kernel. This is needed | |
1622 | if your hardware includes a VFP unit. | |
1623 | ||
1624 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
1625 | release notes and additional status information. | |
1626 | ||
1627 | Say N if your target does not have VFP hardware. | |
1628 | ||
1629 | config VFPv3 | |
1630 | bool | |
1631 | depends on VFP | |
1632 | default y if CPU_V7 | |
1633 | ||
1634 | config NEON | |
1635 | bool "Advanced SIMD (NEON) Extension support" | |
1636 | depends on VFPv3 && CPU_V7 | |
1637 | help | |
1638 | Say Y to include support code for NEON, the ARMv7 Advanced SIMD | |
1639 | Extension. | |
1640 | ||
1641 | endmenu | |
1642 | ||
1643 | menu "Userspace binary formats" | |
1644 | ||
1645 | source "fs/Kconfig.binfmt" | |
1646 | ||
1647 | config ARTHUR | |
1648 | tristate "RISC OS personality" | |
1649 | depends on !AEABI | |
1650 | help | |
1651 | Say Y here to include the kernel code necessary if you want to run | |
1652 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
1653 | experimental; if this sounds frightening, say N and sleep in peace. | |
1654 | You can also say M here to compile this support as a module (which | |
1655 | will be called arthur). | |
1656 | ||
1657 | endmenu | |
1658 | ||
1659 | menu "Power management options" | |
1660 | ||
1661 | source "kernel/power/Kconfig" | |
1662 | ||
1663 | config ARCH_SUSPEND_POSSIBLE | |
1664 | def_bool y | |
1665 | ||
1666 | endmenu | |
1667 | ||
1668 | source "net/Kconfig" | |
1669 | ||
1670 | source "drivers/Kconfig" | |
1671 | ||
1672 | source "fs/Kconfig" | |
1673 | ||
1674 | source "arch/arm/Kconfig.debug" | |
1675 | ||
1676 | source "security/Kconfig" | |
1677 | ||
1678 | source "crypto/Kconfig" | |
1679 | ||
1680 | source "lib/Kconfig" |