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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 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 | endmenu | |
1580 | ||
1581 | menu "CPU Power Management" | |
1582 | ||
1583 | if ARCH_HAS_CPUFREQ | |
1584 | ||
1585 | source "drivers/cpufreq/Kconfig" | |
1586 | ||
1587 | config CPU_FREQ_SA1100 | |
1588 | bool | |
1589 | ||
1590 | config CPU_FREQ_SA1110 | |
1591 | bool | |
1592 | ||
1593 | config CPU_FREQ_INTEGRATOR | |
1594 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
1595 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
1596 | default y | |
1597 | help | |
1598 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
1599 | ||
1600 | For details, take a look at <file:Documentation/cpu-freq>. | |
1601 | ||
1602 | If in doubt, say Y. | |
1603 | ||
1604 | config CPU_FREQ_PXA | |
1605 | bool | |
1606 | depends on CPU_FREQ && ARCH_PXA && PXA25x | |
1607 | default y | |
1608 | select CPU_FREQ_DEFAULT_GOV_USERSPACE | |
1609 | ||
1610 | config CPU_FREQ_S3C64XX | |
1611 | bool "CPUfreq support for Samsung S3C64XX CPUs" | |
1612 | depends on CPU_FREQ && CPU_S3C6410 | |
1613 | ||
1614 | config CPU_FREQ_S3C | |
1615 | bool | |
1616 | help | |
1617 | Internal configuration node for common cpufreq on Samsung SoC | |
1618 | ||
1619 | config CPU_FREQ_S3C24XX | |
1620 | bool "CPUfreq driver for Samsung S3C24XX series CPUs" | |
1621 | depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL | |
1622 | select CPU_FREQ_S3C | |
1623 | help | |
1624 | This enables the CPUfreq driver for the Samsung S3C24XX family | |
1625 | of CPUs. | |
1626 | ||
1627 | For details, take a look at <file:Documentation/cpu-freq>. | |
1628 | ||
1629 | If in doubt, say N. | |
1630 | ||
1631 | config CPU_FREQ_S3C24XX_PLL | |
1632 | bool "Support CPUfreq changing of PLL frequency" | |
1633 | depends on CPU_FREQ_S3C24XX && EXPERIMENTAL | |
1634 | help | |
1635 | Compile in support for changing the PLL frequency from the | |
1636 | S3C24XX series CPUfreq driver. The PLL takes time to settle | |
1637 | after a frequency change, so by default it is not enabled. | |
1638 | ||
1639 | This also means that the PLL tables for the selected CPU(s) will | |
1640 | be built which may increase the size of the kernel image. | |
1641 | ||
1642 | config CPU_FREQ_S3C24XX_DEBUG | |
1643 | bool "Debug CPUfreq Samsung driver core" | |
1644 | depends on CPU_FREQ_S3C24XX | |
1645 | help | |
1646 | Enable s3c_freq_dbg for the Samsung S3C CPUfreq core | |
1647 | ||
1648 | config CPU_FREQ_S3C24XX_IODEBUG | |
1649 | bool "Debug CPUfreq Samsung driver IO timing" | |
1650 | depends on CPU_FREQ_S3C24XX | |
1651 | help | |
1652 | Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core | |
1653 | ||
1654 | config CPU_FREQ_S3C24XX_DEBUGFS | |
1655 | bool "Export debugfs for CPUFreq" | |
1656 | depends on CPU_FREQ_S3C24XX && DEBUG_FS | |
1657 | help | |
1658 | Export status information via debugfs. | |
1659 | ||
1660 | endif | |
1661 | ||
1662 | source "drivers/cpuidle/Kconfig" | |
1663 | ||
1664 | endmenu | |
1665 | ||
1666 | menu "Floating point emulation" | |
1667 | ||
1668 | comment "At least one emulation must be selected" | |
1669 | ||
1670 | config FPE_NWFPE | |
1671 | bool "NWFPE math emulation" | |
1672 | depends on !AEABI || OABI_COMPAT | |
1673 | ---help--- | |
1674 | Say Y to include the NWFPE floating point emulator in the kernel. | |
1675 | This is necessary to run most binaries. Linux does not currently | |
1676 | support floating point hardware so you need to say Y here even if | |
1677 | your machine has an FPA or floating point co-processor podule. | |
1678 | ||
1679 | You may say N here if you are going to load the Acorn FPEmulator | |
1680 | early in the bootup. | |
1681 | ||
1682 | config FPE_NWFPE_XP | |
1683 | bool "Support extended precision" | |
1684 | depends on FPE_NWFPE | |
1685 | help | |
1686 | Say Y to include 80-bit support in the kernel floating-point | |
1687 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
1688 | Note that gcc does not generate 80-bit operations by default, | |
1689 | so in most cases this option only enlarges the size of the | |
1690 | floating point emulator without any good reason. | |
1691 | ||
1692 | You almost surely want to say N here. | |
1693 | ||
1694 | config FPE_FASTFPE | |
1695 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
1696 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL | |
1697 | ---help--- | |
1698 | Say Y here to include the FAST floating point emulator in the kernel. | |
1699 | This is an experimental much faster emulator which now also has full | |
1700 | precision for the mantissa. It does not support any exceptions. | |
1701 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
1702 | ||
1703 | It should be sufficient for most programs. It may be not suitable | |
1704 | for scientific calculations, but you have to check this for yourself. | |
1705 | If you do not feel you need a faster FP emulation you should better | |
1706 | choose NWFPE. | |
1707 | ||
1708 | config VFP | |
1709 | bool "VFP-format floating point maths" | |
1710 | depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON | |
1711 | help | |
1712 | Say Y to include VFP support code in the kernel. This is needed | |
1713 | if your hardware includes a VFP unit. | |
1714 | ||
1715 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
1716 | release notes and additional status information. | |
1717 | ||
1718 | Say N if your target does not have VFP hardware. | |
1719 | ||
1720 | config VFPv3 | |
1721 | bool | |
1722 | depends on VFP | |
1723 | default y if CPU_V7 | |
1724 | ||
1725 | config NEON | |
1726 | bool "Advanced SIMD (NEON) Extension support" | |
1727 | depends on VFPv3 && CPU_V7 | |
1728 | help | |
1729 | Say Y to include support code for NEON, the ARMv7 Advanced SIMD | |
1730 | Extension. | |
1731 | ||
1732 | endmenu | |
1733 | ||
1734 | menu "Userspace binary formats" | |
1735 | ||
1736 | source "fs/Kconfig.binfmt" | |
1737 | ||
1738 | config ARTHUR | |
1739 | tristate "RISC OS personality" | |
1740 | depends on !AEABI | |
1741 | help | |
1742 | Say Y here to include the kernel code necessary if you want to run | |
1743 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
1744 | experimental; if this sounds frightening, say N and sleep in peace. | |
1745 | You can also say M here to compile this support as a module (which | |
1746 | will be called arthur). | |
1747 | ||
1748 | endmenu | |
1749 | ||
1750 | menu "Power management options" | |
1751 | ||
1752 | source "kernel/power/Kconfig" | |
1753 | ||
1754 | config ARCH_SUSPEND_POSSIBLE | |
1755 | def_bool y | |
1756 | ||
1757 | endmenu | |
1758 | ||
1759 | source "net/Kconfig" | |
1760 | ||
1761 | source "drivers/Kconfig" | |
1762 | ||
1763 | source "fs/Kconfig" | |
1764 | ||
1765 | source "arch/arm/Kconfig.debug" | |
1766 | ||
1767 | source "security/Kconfig" | |
1768 | ||
1769 | source "crypto/Kconfig" | |
1770 | ||
1771 | source "lib/Kconfig" |