Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | |
12b824fb | 11 | select RTC_LIB |
75e7153a | 12 | select SYS_SUPPORTS_APM_EMULATION |
1da177e4 LT |
13 | help |
14 | The ARM series is a line of low-power-consumption RISC chip designs | |
f6c8965a | 15 | licensed by ARM Ltd and targeted at embedded applications and |
1da177e4 | 16 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer |
f6c8965a | 17 | manufactured, but legacy ARM-based PC hardware remains popular in |
1da177e4 LT |
18 | Europe. There is an ARM Linux project with a web page at |
19 | <http://www.arm.linux.org.uk/>. | |
20 | ||
75e7153a RB |
21 | config SYS_SUPPORTS_APM_EMULATION |
22 | bool | |
23 | ||
0a938b97 DB |
24 | config GENERIC_GPIO |
25 | bool | |
26 | default n | |
27 | ||
746140c7 KH |
28 | config GENERIC_TIME |
29 | bool | |
30 | default n | |
31 | ||
0567a0c0 KH |
32 | config GENERIC_CLOCKEVENTS |
33 | bool | |
34 | default n | |
35 | ||
1da177e4 LT |
36 | config MMU |
37 | bool | |
38 | default y | |
39 | ||
5ea81769 AV |
40 | config NO_IOPORT |
41 | bool | |
42 | default n | |
43 | ||
1da177e4 LT |
44 | config EISA |
45 | bool | |
46 | ---help--- | |
47 | The Extended Industry Standard Architecture (EISA) bus was | |
48 | developed as an open alternative to the IBM MicroChannel bus. | |
49 | ||
50 | The EISA bus provided some of the features of the IBM MicroChannel | |
51 | bus while maintaining backward compatibility with cards made for | |
52 | the older ISA bus. The EISA bus saw limited use between 1988 and | |
53 | 1995 when it was made obsolete by the PCI bus. | |
54 | ||
55 | Say Y here if you are building a kernel for an EISA-based machine. | |
56 | ||
57 | Otherwise, say N. | |
58 | ||
59 | config SBUS | |
60 | bool | |
61 | ||
62 | config MCA | |
63 | bool | |
64 | help | |
65 | MicroChannel Architecture is found in some IBM PS/2 machines and | |
66 | laptops. It is a bus system similar to PCI or ISA. See | |
67 | <file:Documentation/mca.txt> (and especially the web page given | |
68 | there) before attempting to build an MCA bus kernel. | |
69 | ||
4a2581a0 TG |
70 | config GENERIC_HARDIRQS |
71 | bool | |
72 | default y | |
73 | ||
f16fb1ec RK |
74 | config STACKTRACE_SUPPORT |
75 | bool | |
76 | default y | |
77 | ||
78 | config LOCKDEP_SUPPORT | |
79 | bool | |
80 | default y | |
81 | ||
7ad1bcb2 RK |
82 | config TRACE_IRQFLAGS_SUPPORT |
83 | bool | |
84 | default y | |
85 | ||
4a2581a0 TG |
86 | config HARDIRQS_SW_RESEND |
87 | bool | |
88 | default y | |
89 | ||
90 | config GENERIC_IRQ_PROBE | |
91 | bool | |
92 | default y | |
93 | ||
1da177e4 LT |
94 | config RWSEM_GENERIC_SPINLOCK |
95 | bool | |
96 | default y | |
97 | ||
98 | config RWSEM_XCHGADD_ALGORITHM | |
99 | bool | |
100 | ||
f0d1b0b3 DH |
101 | config ARCH_HAS_ILOG2_U32 |
102 | bool | |
103 | default n | |
104 | ||
105 | config ARCH_HAS_ILOG2_U64 | |
106 | bool | |
107 | default n | |
108 | ||
b89c3b16 AM |
109 | config GENERIC_HWEIGHT |
110 | bool | |
111 | default y | |
112 | ||
1da177e4 LT |
113 | config GENERIC_CALIBRATE_DELAY |
114 | bool | |
115 | default y | |
116 | ||
a08b6b79 Z |
117 | config ARCH_MAY_HAVE_PC_FDC |
118 | bool | |
119 | ||
5ac6da66 CL |
120 | config ZONE_DMA |
121 | bool | |
122 | default y | |
123 | ||
1da177e4 LT |
124 | config GENERIC_ISA_DMA |
125 | bool | |
126 | ||
1da177e4 LT |
127 | config FIQ |
128 | bool | |
129 | ||
034d2f5a AV |
130 | config ARCH_MTD_XIP |
131 | bool | |
132 | ||
c760fc19 HC |
133 | config VECTORS_BASE |
134 | hex | |
6afd6fae | 135 | default 0xffff0000 if MMU || CPU_HIGH_VECTOR |
c760fc19 HC |
136 | default DRAM_BASE if REMAP_VECTORS_TO_RAM |
137 | default 0x00000000 | |
138 | help | |
139 | The base address of exception vectors. | |
140 | ||
1da177e4 LT |
141 | source "init/Kconfig" |
142 | ||
143 | menu "System Type" | |
144 | ||
145 | choice | |
146 | prompt "ARM system type" | |
6a0e2430 | 147 | default ARCH_VERSATILE |
1da177e4 | 148 | |
4af6fee1 DS |
149 | config ARCH_AAEC2000 |
150 | bool "Agilent AAEC-2000 based" | |
151 | select ARM_AMBA | |
152 | help | |
153 | This enables support for systems based on the Agilent AAEC-2000 | |
154 | ||
155 | config ARCH_INTEGRATOR | |
156 | bool "ARM Ltd. Integrator family" | |
157 | select ARM_AMBA | |
158 | select ICST525 | |
159 | help | |
160 | Support for ARM's Integrator platform. | |
161 | ||
162 | config ARCH_REALVIEW | |
163 | bool "ARM Ltd. RealView family" | |
164 | select ARM_AMBA | |
165 | select ICST307 | |
166 | help | |
167 | This enables support for ARM Ltd RealView boards. | |
168 | ||
169 | config ARCH_VERSATILE | |
170 | bool "ARM Ltd. Versatile family" | |
171 | select ARM_AMBA | |
172 | select ARM_VIC | |
173 | select ICST307 | |
b49c87c2 | 174 | select GENERIC_TIME |
89df1272 | 175 | select GENERIC_CLOCKEVENTS |
4af6fee1 DS |
176 | help |
177 | This enables support for ARM Ltd Versatile board. | |
178 | ||
8fc5ffa0 AV |
179 | config ARCH_AT91 |
180 | bool "Atmel AT91" | |
0a938b97 | 181 | select GENERIC_GPIO |
4af6fee1 | 182 | help |
8fc5ffa0 AV |
183 | This enables support for systems based on the Atmel AT91RM9200 |
184 | and AT91SAM9xxx processors. | |
4af6fee1 | 185 | |
1da177e4 | 186 | config ARCH_CLPS7500 |
4af6fee1 | 187 | bool "Cirrus CL-PS7500FE" |
1da177e4 | 188 | select TIMER_ACORN |
f7e68bbf | 189 | select ISA |
e4169889 | 190 | select NO_IOPORT |
f999b8bd MM |
191 | help |
192 | Support for the Cirrus Logic PS7500FE system-on-a-chip. | |
1da177e4 LT |
193 | |
194 | config ARCH_CLPS711X | |
4af6fee1 | 195 | bool "Cirrus Logic CLPS711x/EP721x-based" |
f999b8bd MM |
196 | help |
197 | Support for Cirrus Logic 711x/721x based boards. | |
1da177e4 LT |
198 | |
199 | config ARCH_CO285 | |
200 | bool "Co-EBSA285" | |
201 | select FOOTBRIDGE | |
202 | select FOOTBRIDGE_ADDIN | |
f999b8bd MM |
203 | help |
204 | Support for Intel's EBSA285 companion chip. | |
1da177e4 LT |
205 | |
206 | config ARCH_EBSA110 | |
207 | bool "EBSA-110" | |
f7e68bbf | 208 | select ISA |
c5eb2a2b | 209 | select NO_IOPORT |
1da177e4 LT |
210 | help |
211 | This is an evaluation board for the StrongARM processor available | |
f6c8965a | 212 | from Digital. It has limited hardware on-board, including an |
1da177e4 LT |
213 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
214 | parallel port. | |
215 | ||
e7736d47 LB |
216 | config ARCH_EP93XX |
217 | bool "EP93xx-based" | |
218 | select ARM_AMBA | |
219 | select ARM_VIC | |
220 | help | |
221 | This enables support for the Cirrus EP93xx series of CPUs. | |
222 | ||
1da177e4 LT |
223 | config ARCH_FOOTBRIDGE |
224 | bool "FootBridge" | |
225 | select FOOTBRIDGE | |
f999b8bd MM |
226 | help |
227 | Support for systems based on the DC21285 companion chip | |
228 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
1da177e4 | 229 | |
4af6fee1 DS |
230 | config ARCH_NETX |
231 | bool "Hilscher NetX based" | |
232 | select ARM_VIC | |
f999b8bd | 233 | help |
4af6fee1 DS |
234 | This enables support for systems based on the Hilscher NetX Soc |
235 | ||
236 | config ARCH_H720X | |
237 | bool "Hynix HMS720x-based" | |
238 | select ISA_DMA_API | |
239 | help | |
240 | This enables support for systems based on the Hynix HMS720x | |
241 | ||
242 | config ARCH_IMX | |
243 | bool "IMX" | |
244 | help | |
245 | Support for Motorola's i.MX family of processors (MX1, MXL). | |
1da177e4 | 246 | |
3b938be6 RK |
247 | config ARCH_IOP13XX |
248 | bool "IOP13xx-based" | |
249 | depends on MMU | |
250 | select PLAT_IOP | |
251 | select PCI | |
252 | select ARCH_SUPPORTS_MSI | |
253 | help | |
254 | Support for Intel's IOP13XX (XScale) family of processors. | |
255 | ||
3f7e5815 LB |
256 | config ARCH_IOP32X |
257 | bool "IOP32x-based" | |
a4f7e763 | 258 | depends on MMU |
7ae1f7ec | 259 | select PLAT_IOP |
f7e68bbf | 260 | select PCI |
f999b8bd | 261 | help |
3f7e5815 LB |
262 | Support for Intel's 80219 and IOP32X (XScale) family of |
263 | processors. | |
264 | ||
265 | config ARCH_IOP33X | |
266 | bool "IOP33x-based" | |
267 | depends on MMU | |
7ae1f7ec | 268 | select PLAT_IOP |
3f7e5815 LB |
269 | select PCI |
270 | help | |
271 | Support for Intel's IOP33X (XScale) family of processors. | |
1da177e4 | 272 | |
3b938be6 RK |
273 | config ARCH_IXP23XX |
274 | bool "IXP23XX-based" | |
a4f7e763 | 275 | depends on MMU |
3b938be6 | 276 | select PCI |
f999b8bd | 277 | help |
3b938be6 | 278 | Support for Intel's IXP23xx (XScale) family of processors. |
1da177e4 LT |
279 | |
280 | config ARCH_IXP2000 | |
281 | bool "IXP2400/2800-based" | |
a4f7e763 | 282 | depends on MMU |
f7e68bbf | 283 | select PCI |
f999b8bd MM |
284 | help |
285 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
1da177e4 | 286 | |
3b938be6 RK |
287 | config ARCH_IXP4XX |
288 | bool "IXP4xx-based" | |
a4f7e763 | 289 | depends on MMU |
3b938be6 RK |
290 | select GENERIC_TIME |
291 | select GENERIC_CLOCKEVENTS | |
c4713074 | 292 | help |
3b938be6 | 293 | Support for Intel's IXP4XX (XScale) family of processors. |
c4713074 | 294 | |
1da177e4 LT |
295 | config ARCH_L7200 |
296 | bool "LinkUp-L7200" | |
297 | select FIQ | |
298 | help | |
299 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
300 | L7200 Software Development Board which uses an ARM720T processor. | |
301 | Information on this board can be obtained at: | |
302 | ||
303 | <http://www.linkupsys.com/> | |
304 | ||
305 | If you have any questions or comments about the Linux kernel port | |
306 | to this board, send e-mail to <sjhill@cotw.com>. | |
307 | ||
c53c9cf6 AV |
308 | config ARCH_KS8695 |
309 | bool "Micrel/Kendin KS8695" | |
310 | help | |
311 | Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based | |
312 | System-on-Chip devices. | |
313 | ||
9918cda5 UKK |
314 | config ARCH_NS9XXX |
315 | bool "NetSilicon NS9xxx" | |
316 | help | |
317 | Say Y here if you intend to run this kernel on a NetSilicon NS9xxx | |
318 | System. | |
319 | ||
320 | <http://www.digi.com/products/microprocessors/index.jsp> | |
321 | ||
4af6fee1 DS |
322 | config ARCH_PNX4008 |
323 | bool "Philips Nexperia PNX4008 Mobile" | |
324 | help | |
325 | This enables support for Philips PNX4008 mobile platform. | |
326 | ||
1da177e4 LT |
327 | config ARCH_PXA |
328 | bool "PXA2xx-based" | |
a4f7e763 | 329 | depends on MMU |
034d2f5a | 330 | select ARCH_MTD_XIP |
0a938b97 | 331 | select GENERIC_GPIO |
45cf5eef | 332 | select GENERIC_TIME |
f999b8bd MM |
333 | help |
334 | Support for Intel's PXA2XX processor line. | |
1da177e4 LT |
335 | |
336 | config ARCH_RPC | |
337 | bool "RiscPC" | |
338 | select ARCH_ACORN | |
339 | select FIQ | |
340 | select TIMER_ACORN | |
a08b6b79 | 341 | select ARCH_MAY_HAVE_PC_FDC |
065909b9 | 342 | select ISA_DMA_API |
5ea81769 | 343 | select NO_IOPORT |
1da177e4 LT |
344 | help |
345 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
346 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
347 | ||
348 | config ARCH_SA1100 | |
349 | bool "SA1100-based" | |
f7e68bbf | 350 | select ISA |
3cd9e19e | 351 | select ARCH_DISCONTIGMEM_ENABLE |
034d2f5a | 352 | select ARCH_MTD_XIP |
0a938b97 | 353 | select GENERIC_GPIO |
f999b8bd MM |
354 | help |
355 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
356 | |
357 | config ARCH_S3C2410 | |
e4d06e39 | 358 | bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" |
0a938b97 | 359 | select GENERIC_GPIO |
1da177e4 LT |
360 | help |
361 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
362 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 363 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 LT |
364 | |
365 | config ARCH_SHARK | |
366 | bool "Shark" | |
f7e68bbf RK |
367 | select ISA |
368 | select ISA_DMA | |
369 | select PCI | |
f999b8bd MM |
370 | help |
371 | Support for the StrongARM based Digital DNARD machine, also known | |
372 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
373 | |
374 | config ARCH_LH7A40X | |
375 | bool "Sharp LH7A40X" | |
376 | help | |
377 | Say Y here for systems based on one of the Sharp LH7A40X | |
378 | System on a Chip processors. These CPUs include an ARM922T | |
379 | core with a wide array of integrated devices for | |
380 | hand-held and low-power applications. | |
381 | ||
7c6337e2 KH |
382 | config ARCH_DAVINCI |
383 | bool "TI DaVinci" | |
384 | select GENERIC_TIME | |
385 | select GENERIC_CLOCKEVENTS | |
386 | help | |
387 | Support for TI's DaVinci platform. | |
388 | ||
3b938be6 RK |
389 | config ARCH_OMAP |
390 | bool "TI OMAP" | |
391 | select GENERIC_GPIO | |
392 | select GENERIC_TIME | |
393 | help | |
394 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
395 | ||
1da177e4 LT |
396 | endchoice |
397 | ||
398 | source "arch/arm/mach-clps711x/Kconfig" | |
399 | ||
e7736d47 LB |
400 | source "arch/arm/mach-ep93xx/Kconfig" |
401 | ||
1da177e4 LT |
402 | source "arch/arm/mach-footbridge/Kconfig" |
403 | ||
404 | source "arch/arm/mach-integrator/Kconfig" | |
405 | ||
3f7e5815 LB |
406 | source "arch/arm/mach-iop32x/Kconfig" |
407 | ||
408 | source "arch/arm/mach-iop33x/Kconfig" | |
1da177e4 | 409 | |
285f5fa7 DW |
410 | source "arch/arm/mach-iop13xx/Kconfig" |
411 | ||
1da177e4 LT |
412 | source "arch/arm/mach-ixp4xx/Kconfig" |
413 | ||
414 | source "arch/arm/mach-ixp2000/Kconfig" | |
415 | ||
c4713074 LB |
416 | source "arch/arm/mach-ixp23xx/Kconfig" |
417 | ||
1da177e4 LT |
418 | source "arch/arm/mach-pxa/Kconfig" |
419 | ||
420 | source "arch/arm/mach-sa1100/Kconfig" | |
421 | ||
d48af15e TL |
422 | source "arch/arm/plat-omap/Kconfig" |
423 | ||
424 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 425 | |
1dbae815 TL |
426 | source "arch/arm/mach-omap2/Kconfig" |
427 | ||
a21765a7 BD |
428 | source "arch/arm/plat-s3c24xx/Kconfig" |
429 | ||
430 | if ARCH_S3C2410 | |
431 | source "arch/arm/mach-s3c2400/Kconfig" | |
1da177e4 | 432 | source "arch/arm/mach-s3c2410/Kconfig" |
a21765a7 BD |
433 | source "arch/arm/mach-s3c2412/Kconfig" |
434 | source "arch/arm/mach-s3c2440/Kconfig" | |
435 | source "arch/arm/mach-s3c2442/Kconfig" | |
e4d06e39 | 436 | source "arch/arm/mach-s3c2443/Kconfig" |
a21765a7 | 437 | endif |
1da177e4 LT |
438 | |
439 | source "arch/arm/mach-lh7a40x/Kconfig" | |
440 | ||
441 | source "arch/arm/mach-imx/Kconfig" | |
442 | ||
443 | source "arch/arm/mach-h720x/Kconfig" | |
444 | ||
445 | source "arch/arm/mach-versatile/Kconfig" | |
446 | ||
038c5b60 BN |
447 | source "arch/arm/mach-aaec2000/Kconfig" |
448 | ||
8ad68bbf CM |
449 | source "arch/arm/mach-realview/Kconfig" |
450 | ||
9d041268 | 451 | source "arch/arm/mach-at91/Kconfig" |
73a59c1c | 452 | |
bb6d8c88 SH |
453 | source "arch/arm/mach-netx/Kconfig" |
454 | ||
9918cda5 UKK |
455 | source "arch/arm/mach-ns9xxx/Kconfig" |
456 | ||
7c6337e2 KH |
457 | source "arch/arm/mach-davinci/Kconfig" |
458 | ||
c53c9cf6 AV |
459 | source "arch/arm/mach-ks8695/Kconfig" |
460 | ||
1da177e4 LT |
461 | # Definitions to make life easier |
462 | config ARCH_ACORN | |
463 | bool | |
464 | ||
7ae1f7ec LB |
465 | config PLAT_IOP |
466 | bool | |
467 | ||
1da177e4 LT |
468 | source arch/arm/mm/Kconfig |
469 | ||
afe4b25e LB |
470 | config IWMMXT |
471 | bool "Enable iWMMXt support" | |
6340aa61 | 472 | depends on CPU_XSCALE || CPU_XSC3 |
afe4b25e LB |
473 | default y if PXA27x |
474 | help | |
475 | Enable support for iWMMXt context switching at run time if | |
476 | running on a CPU that supports it. | |
477 | ||
1da177e4 LT |
478 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER |
479 | config XSCALE_PMU | |
480 | bool | |
481 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
482 | default y | |
483 | ||
3b93e7b0 HC |
484 | if !MMU |
485 | source "arch/arm/Kconfig-nommu" | |
486 | endif | |
487 | ||
1da177e4 LT |
488 | endmenu |
489 | ||
490 | source "arch/arm/common/Kconfig" | |
491 | ||
492 | config FORCE_MAX_ZONEORDER | |
493 | int | |
494 | depends on SA1111 | |
495 | default "9" | |
496 | ||
497 | menu "Bus support" | |
498 | ||
499 | config ARM_AMBA | |
500 | bool | |
501 | ||
502 | config ISA | |
503 | bool | |
1da177e4 LT |
504 | help |
505 | Find out whether you have ISA slots on your motherboard. ISA is the | |
506 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
507 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
508 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
509 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
510 | ||
065909b9 | 511 | # Select ISA DMA controller support |
1da177e4 LT |
512 | config ISA_DMA |
513 | bool | |
065909b9 | 514 | select ISA_DMA_API |
1da177e4 | 515 | |
065909b9 | 516 | # Select ISA DMA interface |
5cae841b AV |
517 | config ISA_DMA_API |
518 | bool | |
5cae841b | 519 | |
1da177e4 | 520 | config PCI |
c53c9cf6 | 521 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 |
1da177e4 LT |
522 | help |
523 | Find out whether you have a PCI motherboard. PCI is the name of a | |
524 | bus system, i.e. the way the CPU talks to the other stuff inside | |
525 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
526 | VESA. If you have PCI, say Y, otherwise N. | |
527 | ||
528 | The PCI-HOWTO, available from | |
529 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
530 | information about which PCI hardware does work under Linux and which | |
531 | doesn't. | |
532 | ||
533 | # Select the host bridge type | |
534 | config PCI_HOST_VIA82C505 | |
535 | bool | |
536 | depends on PCI && ARCH_SHARK | |
537 | default y | |
538 | ||
539 | source "drivers/pci/Kconfig" | |
540 | ||
541 | source "drivers/pcmcia/Kconfig" | |
542 | ||
543 | endmenu | |
544 | ||
545 | menu "Kernel Features" | |
546 | ||
0567a0c0 KH |
547 | source "kernel/time/Kconfig" |
548 | ||
1da177e4 LT |
549 | config SMP |
550 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f6db449c | 551 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
1da177e4 LT |
552 | help |
553 | This enables support for systems with more than one CPU. If you have | |
554 | a system with only one CPU, like most personal computers, say N. If | |
555 | you have a system with more than one CPU, say Y. | |
556 | ||
557 | If you say N here, the kernel will run on single and multiprocessor | |
558 | machines, but will use only one CPU of a multiprocessor machine. If | |
559 | you say Y here, the kernel will run on many, but not all, single | |
560 | processor machines. On a single processor machine, the kernel will | |
561 | run faster if you say N here. | |
562 | ||
12c62c2e AO |
563 | See also the <file:Documentation/smp.txt>, |
564 | <file:Documentation/i386/IO-APIC.txt>, | |
1da177e4 LT |
565 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
566 | <http://www.linuxdoc.org/docs.html#howto>. | |
567 | ||
568 | If you don't know what to do here, say N. | |
569 | ||
570 | config NR_CPUS | |
571 | int "Maximum number of CPUs (2-32)" | |
572 | range 2 32 | |
573 | depends on SMP | |
574 | default "4" | |
575 | ||
a054a811 RK |
576 | config HOTPLUG_CPU |
577 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
578 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
579 | help | |
580 | Say Y here to experiment with turning CPUs off and on. CPUs | |
581 | can be controlled through /sys/devices/system/cpu. | |
582 | ||
37ee16ae RK |
583 | config LOCAL_TIMERS |
584 | bool "Use local timer interrupts" | |
2a98beb6 | 585 | depends on SMP && REALVIEW_MPCORE |
37ee16ae RK |
586 | default y |
587 | help | |
588 | Enable support for local timers on SMP platforms, rather then the | |
589 | legacy IPI broadcast method. Local timers allows the system | |
590 | accounting to be spread across the timer interval, preventing a | |
591 | "thundering herd" at every timer tick. | |
592 | ||
1da177e4 LT |
593 | config PREEMPT |
594 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
595 | depends on EXPERIMENTAL | |
596 | help | |
597 | This option reduces the latency of the kernel when reacting to | |
598 | real-time or interactive events by allowing a low priority process to | |
599 | be preempted even if it is in kernel mode executing a system call. | |
600 | This allows applications to run more reliably even when the system is | |
601 | under load. | |
602 | ||
603 | Say Y here if you are building a kernel for a desktop, embedded | |
604 | or real-time system. Say N if you are unsure. | |
605 | ||
8749af68 RK |
606 | config NO_IDLE_HZ |
607 | bool "Dynamic tick timer" | |
0567a0c0 | 608 | depends on !GENERIC_CLOCKEVENTS |
8749af68 RK |
609 | help |
610 | Select this option if you want to disable continuous timer ticks | |
611 | and have them programmed to occur as required. This option saves | |
612 | power as the system can remain in idle state for longer. | |
613 | ||
614 | By default dynamic tick is disabled during the boot, and can be | |
615 | manually enabled with: | |
616 | ||
617 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick | |
618 | ||
619 | Alternatively, if you want dynamic tick automatically enabled | |
620 | during boot, pass "dyntick=enable" via the kernel command string. | |
621 | ||
f2be64b3 TL |
622 | Please note that dynamic tick may affect the accuracy of |
623 | timekeeping on some platforms depending on the implementation. | |
569d2c34 NP |
624 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
625 | to have accurate timekeeping with dynamic tick. | |
f2be64b3 | 626 | |
f8065813 RK |
627 | config HZ |
628 | int | |
629 | default 128 if ARCH_L7200 | |
630 | default 200 if ARCH_EBSA110 || ARCH_S3C2410 | |
bfe65704 | 631 | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER |
f8065813 RK |
632 | default 100 |
633 | ||
704bdda0 NP |
634 | config AEABI |
635 | bool "Use the ARM EABI to compile the kernel" | |
636 | help | |
637 | This option allows for the kernel to be compiled using the latest | |
638 | ARM ABI (aka EABI). This is only useful if you are using a user | |
639 | space environment that is also compiled with EABI. | |
640 | ||
641 | Since there are major incompatibilities between the legacy ABI and | |
642 | EABI, especially with regard to structure member alignment, this | |
643 | option also changes the kernel syscall calling convention to | |
644 | disambiguate both ABIs and allow for backward compatibility support | |
645 | (selected with CONFIG_OABI_COMPAT). | |
646 | ||
647 | To use this you need GCC version 4.0.0 or later. | |
648 | ||
6c90c872 | 649 | config OABI_COMPAT |
a73a3ff1 | 650 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
61c484d4 | 651 | depends on AEABI && EXPERIMENTAL |
6c90c872 NP |
652 | default y |
653 | help | |
654 | This option preserves the old syscall interface along with the | |
655 | new (ARM EABI) one. It also provides a compatibility layer to | |
656 | intercept syscalls that have structure arguments which layout | |
657 | in memory differs between the legacy ABI and the new ARM EABI | |
658 | (only for non "thumb" binaries). This option adds a tiny | |
659 | overhead to all syscalls and produces a slightly larger kernel. | |
660 | If you know you'll be using only pure EABI user space then you | |
661 | can say N here. If this option is not selected and you attempt | |
662 | to execute a legacy ABI binary then the result will be | |
663 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
664 | at all). If in doubt say Y. | |
665 | ||
3f22ab27 | 666 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 667 | bool |
f7e68bbf | 668 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
669 | help |
670 | Say Y to support efficient handling of discontiguous physical memory, | |
671 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
672 | or have huge holes in the physical address space for other reasons. | |
673 | See <file:Documentation/vm/numa> for more. | |
674 | ||
c80d79d7 YG |
675 | config NODES_SHIFT |
676 | int | |
677 | default "4" if ARCH_LH7A40X | |
678 | default "2" | |
679 | depends on NEED_MULTIPLE_NODES | |
680 | ||
3f22ab27 DH |
681 | source "mm/Kconfig" |
682 | ||
1da177e4 LT |
683 | config LEDS |
684 | bool "Timer and CPU usage LEDs" | |
685 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
686 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
687 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
688 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c | 689 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
c53c9cf6 AV |
690 | ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \ |
691 | ARCH_KS8695 | |
1da177e4 LT |
692 | help |
693 | If you say Y here, the LEDs on your machine will be used | |
694 | to provide useful information about your current system status. | |
695 | ||
696 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
697 | be able to select which LEDs are active using the options below. If | |
698 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
699 | red LED will simply flash regularly to indicate that the system is | |
700 | still functional. It is safe to say Y here if you have a CATS | |
701 | system, but the driver will do nothing. | |
702 | ||
703 | config LEDS_TIMER | |
704 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
705 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
706 | depends on LEDS | |
0567a0c0 | 707 | depends on !GENERIC_CLOCKEVENTS |
1da177e4 LT |
708 | default y if ARCH_EBSA110 |
709 | help | |
710 | If you say Y here, one of the system LEDs (the green one on the | |
711 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
712 | will flash regularly to indicate that the system is still | |
713 | operational. This is mainly useful to kernel hackers who are | |
714 | debugging unstable kernels. | |
715 | ||
716 | The LART uses the same LED for both Timer LED and CPU usage LED | |
717 | functions. You may choose to use both, but the Timer LED function | |
718 | will overrule the CPU usage LED. | |
719 | ||
720 | config LEDS_CPU | |
721 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
722 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
723 | depends on LEDS | |
724 | help | |
725 | If you say Y here, the red LED will be used to give a good real | |
726 | time indication of CPU usage, by lighting whenever the idle task | |
727 | is not currently executing. | |
728 | ||
729 | The LART uses the same LED for both Timer LED and CPU usage LED | |
730 | functions. You may choose to use both, but the Timer LED function | |
731 | will overrule the CPU usage LED. | |
732 | ||
733 | config ALIGNMENT_TRAP | |
734 | bool | |
f12d0d7c | 735 | depends on CPU_CP15_MMU |
1da177e4 LT |
736 | default y if !ARCH_EBSA110 |
737 | help | |
84eb8d06 | 738 | ARM processors cannot fetch/store information which is not |
1da177e4 LT |
739 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an |
740 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
741 | fetch/store instructions will be emulated in software if you say | |
742 | here, which has a severe performance impact. This is necessary for | |
743 | correct operation of some network protocols. With an IP-only | |
744 | configuration it is safe to say N, otherwise say Y. | |
745 | ||
746 | endmenu | |
747 | ||
748 | menu "Boot options" | |
749 | ||
750 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
751 | # TEXT and BSS so we preserve their values in the config files. | |
752 | config ZBOOT_ROM_TEXT | |
753 | hex "Compressed ROM boot loader base address" | |
754 | default "0" | |
755 | help | |
756 | The physical address at which the ROM-able zImage is to be | |
757 | placed in the target. Platforms which normally make use of | |
758 | ROM-able zImage formats normally set this to a suitable | |
759 | value in their defconfig file. | |
760 | ||
761 | If ZBOOT_ROM is not enabled, this has no effect. | |
762 | ||
763 | config ZBOOT_ROM_BSS | |
764 | hex "Compressed ROM boot loader BSS address" | |
765 | default "0" | |
766 | help | |
f8c440b2 DF |
767 | The base address of an area of read/write memory in the target |
768 | for the ROM-able zImage which must be available while the | |
769 | decompressor is running. It must be large enough to hold the | |
770 | entire decompressed kernel plus an additional 128 KiB. | |
771 | Platforms which normally make use of ROM-able zImage formats | |
772 | normally set this to a suitable value in their defconfig file. | |
1da177e4 LT |
773 | |
774 | If ZBOOT_ROM is not enabled, this has no effect. | |
775 | ||
776 | config ZBOOT_ROM | |
777 | bool "Compressed boot loader in ROM/flash" | |
778 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
779 | help | |
780 | Say Y here if you intend to execute your compressed kernel image | |
781 | (zImage) directly from ROM or flash. If unsure, say N. | |
782 | ||
783 | config CMDLINE | |
784 | string "Default kernel command string" | |
785 | default "" | |
786 | help | |
787 | On some architectures (EBSA110 and CATS), there is currently no way | |
788 | for the boot loader to pass arguments to the kernel. For these | |
789 | architectures, you should supply some command-line options at build | |
790 | time by entering them here. As a minimum, you should specify the | |
791 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
792 | ||
793 | config XIP_KERNEL | |
794 | bool "Kernel Execute-In-Place from ROM" | |
795 | depends on !ZBOOT_ROM | |
796 | help | |
797 | Execute-In-Place allows the kernel to run from non-volatile storage | |
798 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
799 | space since the text section of the kernel is not loaded from flash | |
800 | to RAM. Read-write sections, such as the data section and stack, | |
801 | are still copied to RAM. The XIP kernel is not compressed since | |
802 | it has to run directly from flash, so it will take more space to | |
803 | store it. The flash address used to link the kernel object files, | |
804 | and for storing it, is configuration dependent. Therefore, if you | |
805 | say Y here, you must know the proper physical address where to | |
806 | store the kernel image depending on your own flash memory usage. | |
807 | ||
808 | Also note that the make target becomes "make xipImage" rather than | |
809 | "make zImage" or "make Image". The final kernel binary to put in | |
810 | ROM memory will be arch/arm/boot/xipImage. | |
811 | ||
812 | If unsure, say N. | |
813 | ||
814 | config XIP_PHYS_ADDR | |
815 | hex "XIP Kernel Physical Location" | |
816 | depends on XIP_KERNEL | |
817 | default "0x00080000" | |
818 | help | |
819 | This is the physical address in your flash memory the kernel will | |
820 | be linked for and stored to. This address is dependent on your | |
821 | own flash usage. | |
822 | ||
c587e4a6 RP |
823 | config KEXEC |
824 | bool "Kexec system call (EXPERIMENTAL)" | |
825 | depends on EXPERIMENTAL | |
826 | help | |
827 | kexec is a system call that implements the ability to shutdown your | |
828 | current kernel, and to start another kernel. It is like a reboot | |
829 | but it is indepedent of the system firmware. And like a reboot | |
830 | you can start any kernel with it, not just Linux. | |
831 | ||
832 | It is an ongoing process to be certain the hardware in a machine | |
833 | is properly shutdown, so do not be surprised if this code does not | |
834 | initially work for you. It may help to enable device hotplugging | |
835 | support. | |
836 | ||
1da177e4 LT |
837 | endmenu |
838 | ||
3c8cd0cc | 839 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX ) |
1da177e4 LT |
840 | |
841 | menu "CPU Frequency scaling" | |
842 | ||
843 | source "drivers/cpufreq/Kconfig" | |
844 | ||
845 | config CPU_FREQ_SA1100 | |
846 | bool | |
07c6d48f | 847 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
848 | default y |
849 | ||
850 | config CPU_FREQ_SA1110 | |
851 | bool | |
852 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
853 | default y | |
854 | ||
855 | config CPU_FREQ_INTEGRATOR | |
856 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
857 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
858 | default y | |
859 | help | |
860 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
861 | ||
862 | For details, take a look at <file:Documentation/cpu-freq>. | |
863 | ||
864 | If in doubt, say Y. | |
865 | ||
3c8cd0cc PP |
866 | config CPU_FREQ_IMX |
867 | tristate "CPUfreq driver for i.MX CPUs" | |
868 | depends on ARCH_IMX && CPU_FREQ | |
869 | default n | |
870 | help | |
871 | This enables the CPUfreq driver for i.MX CPUs. | |
872 | ||
873 | If in doubt, say N. | |
874 | ||
1da177e4 LT |
875 | endmenu |
876 | ||
877 | endif | |
878 | ||
879 | menu "Floating point emulation" | |
880 | ||
881 | comment "At least one emulation must be selected" | |
882 | ||
883 | config FPE_NWFPE | |
884 | bool "NWFPE math emulation" | |
8993a44c | 885 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
886 | ---help--- |
887 | Say Y to include the NWFPE floating point emulator in the kernel. | |
888 | This is necessary to run most binaries. Linux does not currently | |
889 | support floating point hardware so you need to say Y here even if | |
890 | your machine has an FPA or floating point co-processor podule. | |
891 | ||
892 | You may say N here if you are going to load the Acorn FPEmulator | |
893 | early in the bootup. | |
894 | ||
895 | config FPE_NWFPE_XP | |
896 | bool "Support extended precision" | |
bedf142b | 897 | depends on FPE_NWFPE |
1da177e4 LT |
898 | help |
899 | Say Y to include 80-bit support in the kernel floating-point | |
900 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
901 | Note that gcc does not generate 80-bit operations by default, | |
902 | so in most cases this option only enlarges the size of the | |
903 | floating point emulator without any good reason. | |
904 | ||
905 | You almost surely want to say N here. | |
906 | ||
907 | config FPE_FASTFPE | |
908 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 909 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
910 | ---help--- |
911 | Say Y here to include the FAST floating point emulator in the kernel. | |
912 | This is an experimental much faster emulator which now also has full | |
913 | precision for the mantissa. It does not support any exceptions. | |
914 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
915 | ||
916 | It should be sufficient for most programs. It may be not suitable | |
917 | for scientific calculations, but you have to check this for yourself. | |
918 | If you do not feel you need a faster FP emulation you should better | |
919 | choose NWFPE. | |
920 | ||
921 | config VFP | |
922 | bool "VFP-format floating point maths" | |
923 | depends on CPU_V6 || CPU_ARM926T | |
924 | help | |
925 | Say Y to include VFP support code in the kernel. This is needed | |
926 | if your hardware includes a VFP unit. | |
927 | ||
928 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
929 | release notes and additional status information. | |
930 | ||
931 | Say N if your target does not have VFP hardware. | |
932 | ||
933 | endmenu | |
934 | ||
935 | menu "Userspace binary formats" | |
936 | ||
937 | source "fs/Kconfig.binfmt" | |
938 | ||
939 | config ARTHUR | |
940 | tristate "RISC OS personality" | |
704bdda0 | 941 | depends on !AEABI |
1da177e4 LT |
942 | help |
943 | Say Y here to include the kernel code necessary if you want to run | |
944 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
945 | experimental; if this sounds frightening, say N and sleep in peace. | |
946 | You can also say M here to compile this support as a module (which | |
947 | will be called arthur). | |
948 | ||
949 | endmenu | |
950 | ||
951 | menu "Power management options" | |
952 | ||
eceab4ac | 953 | source "kernel/power/Kconfig" |
1da177e4 | 954 | |
1da177e4 LT |
955 | endmenu |
956 | ||
d5950b43 SR |
957 | source "net/Kconfig" |
958 | ||
1da177e4 LT |
959 | menu "Device Drivers" |
960 | ||
961 | source "drivers/base/Kconfig" | |
962 | ||
c35bf4a5 PM |
963 | source "drivers/connector/Kconfig" |
964 | ||
f12d0d7c | 965 | if ALIGNMENT_TRAP || !CPU_CP15_MMU |
1da177e4 LT |
966 | source "drivers/mtd/Kconfig" |
967 | endif | |
968 | ||
969 | source "drivers/parport/Kconfig" | |
970 | ||
971 | source "drivers/pnp/Kconfig" | |
972 | ||
973 | source "drivers/block/Kconfig" | |
974 | ||
975 | source "drivers/acorn/block/Kconfig" | |
976 | ||
3f7e5815 | 977 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \ |
bb011b8e | 978 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ |
c4713074 LB |
979 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \ |
980 | || ARCH_IXP23XX | |
1da177e4 LT |
981 | source "drivers/ide/Kconfig" |
982 | endif | |
983 | ||
984 | source "drivers/scsi/Kconfig" | |
985 | ||
eb370f0b MM |
986 | source "drivers/ata/Kconfig" |
987 | ||
1da177e4 LT |
988 | source "drivers/md/Kconfig" |
989 | ||
990 | source "drivers/message/fusion/Kconfig" | |
991 | ||
992 | source "drivers/ieee1394/Kconfig" | |
993 | ||
994 | source "drivers/message/i2o/Kconfig" | |
995 | ||
d5950b43 | 996 | source "drivers/net/Kconfig" |
1da177e4 LT |
997 | |
998 | source "drivers/isdn/Kconfig" | |
999 | ||
1000 | # input before char - char/joystick depends on it. As does USB. | |
1001 | ||
1002 | source "drivers/input/Kconfig" | |
1003 | ||
1004 | source "drivers/char/Kconfig" | |
1005 | ||
1006 | source "drivers/i2c/Kconfig" | |
1007 | ||
8ae12a0d DB |
1008 | source "drivers/spi/Kconfig" |
1009 | ||
04916c0e AZ |
1010 | source "drivers/w1/Kconfig" |
1011 | ||
ad2f931d JD |
1012 | source "drivers/hwmon/Kconfig" |
1013 | ||
1da177e4 LT |
1014 | #source "drivers/l3/Kconfig" |
1015 | ||
1016 | source "drivers/misc/Kconfig" | |
1017 | ||
a4e137ab RK |
1018 | source "drivers/mfd/Kconfig" |
1019 | ||
c72a1d60 RP |
1020 | source "drivers/leds/Kconfig" |
1021 | ||
1da177e4 LT |
1022 | source "drivers/media/Kconfig" |
1023 | ||
1024 | source "drivers/video/Kconfig" | |
1025 | ||
1026 | source "sound/Kconfig" | |
1027 | ||
c2dade51 SH |
1028 | source "drivers/hid/Kconfig" |
1029 | ||
1da177e4 LT |
1030 | source "drivers/usb/Kconfig" |
1031 | ||
1032 | source "drivers/mmc/Kconfig" | |
1033 | ||
12b824fb AZ |
1034 | source "drivers/rtc/Kconfig" |
1035 | ||
1da177e4 LT |
1036 | endmenu |
1037 | ||
1038 | source "fs/Kconfig" | |
1039 | ||
1040 | source "arch/arm/oprofile/Kconfig" | |
1041 | ||
1042 | source "arch/arm/Kconfig.debug" | |
1043 | ||
1044 | source "security/Kconfig" | |
1045 | ||
1046 | source "crypto/Kconfig" | |
1047 | ||
1048 | source "lib/Kconfig" |