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 |
8858e9af | 290 | select GENERIC_GPIO |
3b938be6 RK |
291 | select GENERIC_TIME |
292 | select GENERIC_CLOCKEVENTS | |
c4713074 | 293 | help |
3b938be6 | 294 | Support for Intel's IXP4XX (XScale) family of processors. |
c4713074 | 295 | |
1da177e4 LT |
296 | config ARCH_L7200 |
297 | bool "LinkUp-L7200" | |
298 | select FIQ | |
299 | help | |
300 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
301 | L7200 Software Development Board which uses an ARM720T processor. | |
302 | Information on this board can be obtained at: | |
303 | ||
304 | <http://www.linkupsys.com/> | |
305 | ||
306 | If you have any questions or comments about the Linux kernel port | |
307 | to this board, send e-mail to <sjhill@cotw.com>. | |
308 | ||
c53c9cf6 AV |
309 | config ARCH_KS8695 |
310 | bool "Micrel/Kendin KS8695" | |
311 | help | |
312 | Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based | |
313 | System-on-Chip devices. | |
314 | ||
9918cda5 UKK |
315 | config ARCH_NS9XXX |
316 | bool "NetSilicon NS9xxx" | |
317 | help | |
318 | Say Y here if you intend to run this kernel on a NetSilicon NS9xxx | |
319 | System. | |
320 | ||
321 | <http://www.digi.com/products/microprocessors/index.jsp> | |
322 | ||
4af6fee1 DS |
323 | config ARCH_PNX4008 |
324 | bool "Philips Nexperia PNX4008 Mobile" | |
325 | help | |
326 | This enables support for Philips PNX4008 mobile platform. | |
327 | ||
1da177e4 LT |
328 | config ARCH_PXA |
329 | bool "PXA2xx-based" | |
a4f7e763 | 330 | depends on MMU |
034d2f5a | 331 | select ARCH_MTD_XIP |
0a938b97 | 332 | select GENERIC_GPIO |
45cf5eef | 333 | select GENERIC_TIME |
f999b8bd MM |
334 | help |
335 | Support for Intel's PXA2XX processor line. | |
1da177e4 LT |
336 | |
337 | config ARCH_RPC | |
338 | bool "RiscPC" | |
339 | select ARCH_ACORN | |
340 | select FIQ | |
341 | select TIMER_ACORN | |
a08b6b79 | 342 | select ARCH_MAY_HAVE_PC_FDC |
065909b9 | 343 | select ISA_DMA_API |
5ea81769 | 344 | select NO_IOPORT |
1da177e4 LT |
345 | help |
346 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
347 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
348 | ||
349 | config ARCH_SA1100 | |
350 | bool "SA1100-based" | |
f7e68bbf | 351 | select ISA |
3cd9e19e | 352 | select ARCH_DISCONTIGMEM_ENABLE |
034d2f5a | 353 | select ARCH_MTD_XIP |
0a938b97 | 354 | select GENERIC_GPIO |
f999b8bd MM |
355 | help |
356 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
357 | |
358 | config ARCH_S3C2410 | |
e4d06e39 | 359 | bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" |
0a938b97 | 360 | select GENERIC_GPIO |
1da177e4 LT |
361 | help |
362 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
363 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 364 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 LT |
365 | |
366 | config ARCH_SHARK | |
367 | bool "Shark" | |
f7e68bbf RK |
368 | select ISA |
369 | select ISA_DMA | |
370 | select PCI | |
f999b8bd MM |
371 | help |
372 | Support for the StrongARM based Digital DNARD machine, also known | |
373 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
374 | |
375 | config ARCH_LH7A40X | |
376 | bool "Sharp LH7A40X" | |
377 | help | |
378 | Say Y here for systems based on one of the Sharp LH7A40X | |
379 | System on a Chip processors. These CPUs include an ARM922T | |
380 | core with a wide array of integrated devices for | |
381 | hand-held and low-power applications. | |
382 | ||
7c6337e2 KH |
383 | config ARCH_DAVINCI |
384 | bool "TI DaVinci" | |
385 | select GENERIC_TIME | |
386 | select GENERIC_CLOCKEVENTS | |
387 | help | |
388 | Support for TI's DaVinci platform. | |
389 | ||
3b938be6 RK |
390 | config ARCH_OMAP |
391 | bool "TI OMAP" | |
392 | select GENERIC_GPIO | |
393 | select GENERIC_TIME | |
394 | help | |
395 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
396 | ||
1da177e4 LT |
397 | endchoice |
398 | ||
399 | source "arch/arm/mach-clps711x/Kconfig" | |
400 | ||
e7736d47 LB |
401 | source "arch/arm/mach-ep93xx/Kconfig" |
402 | ||
1da177e4 LT |
403 | source "arch/arm/mach-footbridge/Kconfig" |
404 | ||
405 | source "arch/arm/mach-integrator/Kconfig" | |
406 | ||
3f7e5815 LB |
407 | source "arch/arm/mach-iop32x/Kconfig" |
408 | ||
409 | source "arch/arm/mach-iop33x/Kconfig" | |
1da177e4 | 410 | |
285f5fa7 DW |
411 | source "arch/arm/mach-iop13xx/Kconfig" |
412 | ||
1da177e4 LT |
413 | source "arch/arm/mach-ixp4xx/Kconfig" |
414 | ||
415 | source "arch/arm/mach-ixp2000/Kconfig" | |
416 | ||
c4713074 LB |
417 | source "arch/arm/mach-ixp23xx/Kconfig" |
418 | ||
1da177e4 LT |
419 | source "arch/arm/mach-pxa/Kconfig" |
420 | ||
421 | source "arch/arm/mach-sa1100/Kconfig" | |
422 | ||
d48af15e TL |
423 | source "arch/arm/plat-omap/Kconfig" |
424 | ||
425 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 426 | |
1dbae815 TL |
427 | source "arch/arm/mach-omap2/Kconfig" |
428 | ||
a21765a7 BD |
429 | source "arch/arm/plat-s3c24xx/Kconfig" |
430 | ||
431 | if ARCH_S3C2410 | |
432 | source "arch/arm/mach-s3c2400/Kconfig" | |
1da177e4 | 433 | source "arch/arm/mach-s3c2410/Kconfig" |
a21765a7 BD |
434 | source "arch/arm/mach-s3c2412/Kconfig" |
435 | source "arch/arm/mach-s3c2440/Kconfig" | |
436 | source "arch/arm/mach-s3c2442/Kconfig" | |
e4d06e39 | 437 | source "arch/arm/mach-s3c2443/Kconfig" |
a21765a7 | 438 | endif |
1da177e4 LT |
439 | |
440 | source "arch/arm/mach-lh7a40x/Kconfig" | |
441 | ||
442 | source "arch/arm/mach-imx/Kconfig" | |
443 | ||
444 | source "arch/arm/mach-h720x/Kconfig" | |
445 | ||
446 | source "arch/arm/mach-versatile/Kconfig" | |
447 | ||
038c5b60 BN |
448 | source "arch/arm/mach-aaec2000/Kconfig" |
449 | ||
8ad68bbf CM |
450 | source "arch/arm/mach-realview/Kconfig" |
451 | ||
9d041268 | 452 | source "arch/arm/mach-at91/Kconfig" |
73a59c1c | 453 | |
bb6d8c88 SH |
454 | source "arch/arm/mach-netx/Kconfig" |
455 | ||
9918cda5 UKK |
456 | source "arch/arm/mach-ns9xxx/Kconfig" |
457 | ||
7c6337e2 KH |
458 | source "arch/arm/mach-davinci/Kconfig" |
459 | ||
c53c9cf6 AV |
460 | source "arch/arm/mach-ks8695/Kconfig" |
461 | ||
1da177e4 LT |
462 | # Definitions to make life easier |
463 | config ARCH_ACORN | |
464 | bool | |
465 | ||
7ae1f7ec LB |
466 | config PLAT_IOP |
467 | bool | |
468 | ||
1da177e4 LT |
469 | source arch/arm/mm/Kconfig |
470 | ||
afe4b25e LB |
471 | config IWMMXT |
472 | bool "Enable iWMMXt support" | |
6340aa61 | 473 | depends on CPU_XSCALE || CPU_XSC3 |
afe4b25e LB |
474 | default y if PXA27x |
475 | help | |
476 | Enable support for iWMMXt context switching at run time if | |
477 | running on a CPU that supports it. | |
478 | ||
1da177e4 LT |
479 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER |
480 | config XSCALE_PMU | |
481 | bool | |
482 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
483 | default y | |
484 | ||
3b93e7b0 HC |
485 | if !MMU |
486 | source "arch/arm/Kconfig-nommu" | |
487 | endif | |
488 | ||
1da177e4 LT |
489 | endmenu |
490 | ||
491 | source "arch/arm/common/Kconfig" | |
492 | ||
493 | config FORCE_MAX_ZONEORDER | |
494 | int | |
495 | depends on SA1111 | |
496 | default "9" | |
497 | ||
498 | menu "Bus support" | |
499 | ||
500 | config ARM_AMBA | |
501 | bool | |
502 | ||
503 | config ISA | |
504 | bool | |
1da177e4 LT |
505 | help |
506 | Find out whether you have ISA slots on your motherboard. ISA is the | |
507 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
508 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
509 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
510 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
511 | ||
065909b9 | 512 | # Select ISA DMA controller support |
1da177e4 LT |
513 | config ISA_DMA |
514 | bool | |
065909b9 | 515 | select ISA_DMA_API |
1da177e4 | 516 | |
065909b9 | 517 | # Select ISA DMA interface |
5cae841b AV |
518 | config ISA_DMA_API |
519 | bool | |
5cae841b | 520 | |
1da177e4 | 521 | config PCI |
c53c9cf6 | 522 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 |
1da177e4 LT |
523 | help |
524 | Find out whether you have a PCI motherboard. PCI is the name of a | |
525 | bus system, i.e. the way the CPU talks to the other stuff inside | |
526 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
527 | VESA. If you have PCI, say Y, otherwise N. | |
528 | ||
529 | The PCI-HOWTO, available from | |
530 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
531 | information about which PCI hardware does work under Linux and which | |
532 | doesn't. | |
533 | ||
534 | # Select the host bridge type | |
535 | config PCI_HOST_VIA82C505 | |
536 | bool | |
537 | depends on PCI && ARCH_SHARK | |
538 | default y | |
539 | ||
540 | source "drivers/pci/Kconfig" | |
541 | ||
542 | source "drivers/pcmcia/Kconfig" | |
543 | ||
544 | endmenu | |
545 | ||
546 | menu "Kernel Features" | |
547 | ||
0567a0c0 KH |
548 | source "kernel/time/Kconfig" |
549 | ||
1da177e4 LT |
550 | config SMP |
551 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f6db449c | 552 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
1da177e4 LT |
553 | help |
554 | This enables support for systems with more than one CPU. If you have | |
555 | a system with only one CPU, like most personal computers, say N. If | |
556 | you have a system with more than one CPU, say Y. | |
557 | ||
558 | If you say N here, the kernel will run on single and multiprocessor | |
559 | machines, but will use only one CPU of a multiprocessor machine. If | |
560 | you say Y here, the kernel will run on many, but not all, single | |
561 | processor machines. On a single processor machine, the kernel will | |
562 | run faster if you say N here. | |
563 | ||
12c62c2e AO |
564 | See also the <file:Documentation/smp.txt>, |
565 | <file:Documentation/i386/IO-APIC.txt>, | |
1da177e4 LT |
566 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
567 | <http://www.linuxdoc.org/docs.html#howto>. | |
568 | ||
569 | If you don't know what to do here, say N. | |
570 | ||
571 | config NR_CPUS | |
572 | int "Maximum number of CPUs (2-32)" | |
573 | range 2 32 | |
574 | depends on SMP | |
575 | default "4" | |
576 | ||
a054a811 RK |
577 | config HOTPLUG_CPU |
578 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
579 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
580 | help | |
581 | Say Y here to experiment with turning CPUs off and on. CPUs | |
582 | can be controlled through /sys/devices/system/cpu. | |
583 | ||
37ee16ae RK |
584 | config LOCAL_TIMERS |
585 | bool "Use local timer interrupts" | |
2a98beb6 | 586 | depends on SMP && REALVIEW_MPCORE |
37ee16ae RK |
587 | default y |
588 | help | |
589 | Enable support for local timers on SMP platforms, rather then the | |
590 | legacy IPI broadcast method. Local timers allows the system | |
591 | accounting to be spread across the timer interval, preventing a | |
592 | "thundering herd" at every timer tick. | |
593 | ||
1da177e4 LT |
594 | config PREEMPT |
595 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
596 | depends on EXPERIMENTAL | |
597 | help | |
598 | This option reduces the latency of the kernel when reacting to | |
599 | real-time or interactive events by allowing a low priority process to | |
600 | be preempted even if it is in kernel mode executing a system call. | |
601 | This allows applications to run more reliably even when the system is | |
602 | under load. | |
603 | ||
604 | Say Y here if you are building a kernel for a desktop, embedded | |
605 | or real-time system. Say N if you are unsure. | |
606 | ||
8749af68 RK |
607 | config NO_IDLE_HZ |
608 | bool "Dynamic tick timer" | |
0567a0c0 | 609 | depends on !GENERIC_CLOCKEVENTS |
8749af68 RK |
610 | help |
611 | Select this option if you want to disable continuous timer ticks | |
612 | and have them programmed to occur as required. This option saves | |
613 | power as the system can remain in idle state for longer. | |
614 | ||
615 | By default dynamic tick is disabled during the boot, and can be | |
616 | manually enabled with: | |
617 | ||
618 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick | |
619 | ||
620 | Alternatively, if you want dynamic tick automatically enabled | |
621 | during boot, pass "dyntick=enable" via the kernel command string. | |
622 | ||
f2be64b3 TL |
623 | Please note that dynamic tick may affect the accuracy of |
624 | timekeeping on some platforms depending on the implementation. | |
569d2c34 NP |
625 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
626 | to have accurate timekeeping with dynamic tick. | |
f2be64b3 | 627 | |
f8065813 RK |
628 | config HZ |
629 | int | |
630 | default 128 if ARCH_L7200 | |
631 | default 200 if ARCH_EBSA110 || ARCH_S3C2410 | |
bfe65704 | 632 | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER |
f8065813 RK |
633 | default 100 |
634 | ||
704bdda0 NP |
635 | config AEABI |
636 | bool "Use the ARM EABI to compile the kernel" | |
637 | help | |
638 | This option allows for the kernel to be compiled using the latest | |
639 | ARM ABI (aka EABI). This is only useful if you are using a user | |
640 | space environment that is also compiled with EABI. | |
641 | ||
642 | Since there are major incompatibilities between the legacy ABI and | |
643 | EABI, especially with regard to structure member alignment, this | |
644 | option also changes the kernel syscall calling convention to | |
645 | disambiguate both ABIs and allow for backward compatibility support | |
646 | (selected with CONFIG_OABI_COMPAT). | |
647 | ||
648 | To use this you need GCC version 4.0.0 or later. | |
649 | ||
6c90c872 | 650 | config OABI_COMPAT |
a73a3ff1 | 651 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
61c484d4 | 652 | depends on AEABI && EXPERIMENTAL |
6c90c872 NP |
653 | default y |
654 | help | |
655 | This option preserves the old syscall interface along with the | |
656 | new (ARM EABI) one. It also provides a compatibility layer to | |
657 | intercept syscalls that have structure arguments which layout | |
658 | in memory differs between the legacy ABI and the new ARM EABI | |
659 | (only for non "thumb" binaries). This option adds a tiny | |
660 | overhead to all syscalls and produces a slightly larger kernel. | |
661 | If you know you'll be using only pure EABI user space then you | |
662 | can say N here. If this option is not selected and you attempt | |
663 | to execute a legacy ABI binary then the result will be | |
664 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
665 | at all). If in doubt say Y. | |
666 | ||
3f22ab27 | 667 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 668 | bool |
f7e68bbf | 669 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
670 | help |
671 | Say Y to support efficient handling of discontiguous physical memory, | |
672 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
673 | or have huge holes in the physical address space for other reasons. | |
674 | See <file:Documentation/vm/numa> for more. | |
675 | ||
c80d79d7 YG |
676 | config NODES_SHIFT |
677 | int | |
678 | default "4" if ARCH_LH7A40X | |
679 | default "2" | |
680 | depends on NEED_MULTIPLE_NODES | |
681 | ||
3f22ab27 DH |
682 | source "mm/Kconfig" |
683 | ||
1da177e4 LT |
684 | config LEDS |
685 | bool "Timer and CPU usage LEDs" | |
686 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
687 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
688 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
689 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c | 690 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
c53c9cf6 AV |
691 | ARCH_AT91 || MACH_TRIZEPS4 || ARCH_DAVINCI || \ |
692 | ARCH_KS8695 | |
1da177e4 LT |
693 | help |
694 | If you say Y here, the LEDs on your machine will be used | |
695 | to provide useful information about your current system status. | |
696 | ||
697 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
698 | be able to select which LEDs are active using the options below. If | |
699 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
700 | red LED will simply flash regularly to indicate that the system is | |
701 | still functional. It is safe to say Y here if you have a CATS | |
702 | system, but the driver will do nothing. | |
703 | ||
704 | config LEDS_TIMER | |
705 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
706 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
707 | depends on LEDS | |
0567a0c0 | 708 | depends on !GENERIC_CLOCKEVENTS |
1da177e4 LT |
709 | default y if ARCH_EBSA110 |
710 | help | |
711 | If you say Y here, one of the system LEDs (the green one on the | |
712 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
713 | will flash regularly to indicate that the system is still | |
714 | operational. This is mainly useful to kernel hackers who are | |
715 | debugging unstable kernels. | |
716 | ||
717 | The LART uses the same LED for both Timer LED and CPU usage LED | |
718 | functions. You may choose to use both, but the Timer LED function | |
719 | will overrule the CPU usage LED. | |
720 | ||
721 | config LEDS_CPU | |
722 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
723 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
724 | depends on LEDS | |
725 | help | |
726 | If you say Y here, the red LED will be used to give a good real | |
727 | time indication of CPU usage, by lighting whenever the idle task | |
728 | is not currently executing. | |
729 | ||
730 | The LART uses the same LED for both Timer LED and CPU usage LED | |
731 | functions. You may choose to use both, but the Timer LED function | |
732 | will overrule the CPU usage LED. | |
733 | ||
734 | config ALIGNMENT_TRAP | |
735 | bool | |
f12d0d7c | 736 | depends on CPU_CP15_MMU |
1da177e4 LT |
737 | default y if !ARCH_EBSA110 |
738 | help | |
84eb8d06 | 739 | ARM processors cannot fetch/store information which is not |
1da177e4 LT |
740 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an |
741 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
742 | fetch/store instructions will be emulated in software if you say | |
743 | here, which has a severe performance impact. This is necessary for | |
744 | correct operation of some network protocols. With an IP-only | |
745 | configuration it is safe to say N, otherwise say Y. | |
746 | ||
747 | endmenu | |
748 | ||
749 | menu "Boot options" | |
750 | ||
751 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
752 | # TEXT and BSS so we preserve their values in the config files. | |
753 | config ZBOOT_ROM_TEXT | |
754 | hex "Compressed ROM boot loader base address" | |
755 | default "0" | |
756 | help | |
757 | The physical address at which the ROM-able zImage is to be | |
758 | placed in the target. Platforms which normally make use of | |
759 | ROM-able zImage formats normally set this to a suitable | |
760 | value in their defconfig file. | |
761 | ||
762 | If ZBOOT_ROM is not enabled, this has no effect. | |
763 | ||
764 | config ZBOOT_ROM_BSS | |
765 | hex "Compressed ROM boot loader BSS address" | |
766 | default "0" | |
767 | help | |
f8c440b2 DF |
768 | The base address of an area of read/write memory in the target |
769 | for the ROM-able zImage which must be available while the | |
770 | decompressor is running. It must be large enough to hold the | |
771 | entire decompressed kernel plus an additional 128 KiB. | |
772 | Platforms which normally make use of ROM-able zImage formats | |
773 | normally set this to a suitable value in their defconfig file. | |
1da177e4 LT |
774 | |
775 | If ZBOOT_ROM is not enabled, this has no effect. | |
776 | ||
777 | config ZBOOT_ROM | |
778 | bool "Compressed boot loader in ROM/flash" | |
779 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
780 | help | |
781 | Say Y here if you intend to execute your compressed kernel image | |
782 | (zImage) directly from ROM or flash. If unsure, say N. | |
783 | ||
784 | config CMDLINE | |
785 | string "Default kernel command string" | |
786 | default "" | |
787 | help | |
788 | On some architectures (EBSA110 and CATS), there is currently no way | |
789 | for the boot loader to pass arguments to the kernel. For these | |
790 | architectures, you should supply some command-line options at build | |
791 | time by entering them here. As a minimum, you should specify the | |
792 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
793 | ||
794 | config XIP_KERNEL | |
795 | bool "Kernel Execute-In-Place from ROM" | |
796 | depends on !ZBOOT_ROM | |
797 | help | |
798 | Execute-In-Place allows the kernel to run from non-volatile storage | |
799 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
800 | space since the text section of the kernel is not loaded from flash | |
801 | to RAM. Read-write sections, such as the data section and stack, | |
802 | are still copied to RAM. The XIP kernel is not compressed since | |
803 | it has to run directly from flash, so it will take more space to | |
804 | store it. The flash address used to link the kernel object files, | |
805 | and for storing it, is configuration dependent. Therefore, if you | |
806 | say Y here, you must know the proper physical address where to | |
807 | store the kernel image depending on your own flash memory usage. | |
808 | ||
809 | Also note that the make target becomes "make xipImage" rather than | |
810 | "make zImage" or "make Image". The final kernel binary to put in | |
811 | ROM memory will be arch/arm/boot/xipImage. | |
812 | ||
813 | If unsure, say N. | |
814 | ||
815 | config XIP_PHYS_ADDR | |
816 | hex "XIP Kernel Physical Location" | |
817 | depends on XIP_KERNEL | |
818 | default "0x00080000" | |
819 | help | |
820 | This is the physical address in your flash memory the kernel will | |
821 | be linked for and stored to. This address is dependent on your | |
822 | own flash usage. | |
823 | ||
c587e4a6 RP |
824 | config KEXEC |
825 | bool "Kexec system call (EXPERIMENTAL)" | |
826 | depends on EXPERIMENTAL | |
827 | help | |
828 | kexec is a system call that implements the ability to shutdown your | |
829 | current kernel, and to start another kernel. It is like a reboot | |
830 | but it is indepedent of the system firmware. And like a reboot | |
831 | you can start any kernel with it, not just Linux. | |
832 | ||
833 | It is an ongoing process to be certain the hardware in a machine | |
834 | is properly shutdown, so do not be surprised if this code does not | |
835 | initially work for you. It may help to enable device hotplugging | |
836 | support. | |
837 | ||
1da177e4 LT |
838 | endmenu |
839 | ||
3c8cd0cc | 840 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX ) |
1da177e4 LT |
841 | |
842 | menu "CPU Frequency scaling" | |
843 | ||
844 | source "drivers/cpufreq/Kconfig" | |
845 | ||
846 | config CPU_FREQ_SA1100 | |
847 | bool | |
07c6d48f | 848 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
849 | default y |
850 | ||
851 | config CPU_FREQ_SA1110 | |
852 | bool | |
853 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
854 | default y | |
855 | ||
856 | config CPU_FREQ_INTEGRATOR | |
857 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
858 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
859 | default y | |
860 | help | |
861 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
862 | ||
863 | For details, take a look at <file:Documentation/cpu-freq>. | |
864 | ||
865 | If in doubt, say Y. | |
866 | ||
3c8cd0cc PP |
867 | config CPU_FREQ_IMX |
868 | tristate "CPUfreq driver for i.MX CPUs" | |
869 | depends on ARCH_IMX && CPU_FREQ | |
870 | default n | |
871 | help | |
872 | This enables the CPUfreq driver for i.MX CPUs. | |
873 | ||
874 | If in doubt, say N. | |
875 | ||
1da177e4 LT |
876 | endmenu |
877 | ||
878 | endif | |
879 | ||
880 | menu "Floating point emulation" | |
881 | ||
882 | comment "At least one emulation must be selected" | |
883 | ||
884 | config FPE_NWFPE | |
885 | bool "NWFPE math emulation" | |
8993a44c | 886 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
887 | ---help--- |
888 | Say Y to include the NWFPE floating point emulator in the kernel. | |
889 | This is necessary to run most binaries. Linux does not currently | |
890 | support floating point hardware so you need to say Y here even if | |
891 | your machine has an FPA or floating point co-processor podule. | |
892 | ||
893 | You may say N here if you are going to load the Acorn FPEmulator | |
894 | early in the bootup. | |
895 | ||
896 | config FPE_NWFPE_XP | |
897 | bool "Support extended precision" | |
bedf142b | 898 | depends on FPE_NWFPE |
1da177e4 LT |
899 | help |
900 | Say Y to include 80-bit support in the kernel floating-point | |
901 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
902 | Note that gcc does not generate 80-bit operations by default, | |
903 | so in most cases this option only enlarges the size of the | |
904 | floating point emulator without any good reason. | |
905 | ||
906 | You almost surely want to say N here. | |
907 | ||
908 | config FPE_FASTFPE | |
909 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 910 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
911 | ---help--- |
912 | Say Y here to include the FAST floating point emulator in the kernel. | |
913 | This is an experimental much faster emulator which now also has full | |
914 | precision for the mantissa. It does not support any exceptions. | |
915 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
916 | ||
917 | It should be sufficient for most programs. It may be not suitable | |
918 | for scientific calculations, but you have to check this for yourself. | |
919 | If you do not feel you need a faster FP emulation you should better | |
920 | choose NWFPE. | |
921 | ||
922 | config VFP | |
923 | bool "VFP-format floating point maths" | |
924 | depends on CPU_V6 || CPU_ARM926T | |
925 | help | |
926 | Say Y to include VFP support code in the kernel. This is needed | |
927 | if your hardware includes a VFP unit. | |
928 | ||
929 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
930 | release notes and additional status information. | |
931 | ||
932 | Say N if your target does not have VFP hardware. | |
933 | ||
934 | endmenu | |
935 | ||
936 | menu "Userspace binary formats" | |
937 | ||
938 | source "fs/Kconfig.binfmt" | |
939 | ||
940 | config ARTHUR | |
941 | tristate "RISC OS personality" | |
704bdda0 | 942 | depends on !AEABI |
1da177e4 LT |
943 | help |
944 | Say Y here to include the kernel code necessary if you want to run | |
945 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
946 | experimental; if this sounds frightening, say N and sleep in peace. | |
947 | You can also say M here to compile this support as a module (which | |
948 | will be called arthur). | |
949 | ||
950 | endmenu | |
951 | ||
952 | menu "Power management options" | |
953 | ||
eceab4ac | 954 | source "kernel/power/Kconfig" |
1da177e4 | 955 | |
1da177e4 LT |
956 | endmenu |
957 | ||
d5950b43 SR |
958 | source "net/Kconfig" |
959 | ||
1da177e4 LT |
960 | menu "Device Drivers" |
961 | ||
962 | source "drivers/base/Kconfig" | |
963 | ||
c35bf4a5 PM |
964 | source "drivers/connector/Kconfig" |
965 | ||
f12d0d7c | 966 | if ALIGNMENT_TRAP || !CPU_CP15_MMU |
1da177e4 LT |
967 | source "drivers/mtd/Kconfig" |
968 | endif | |
969 | ||
970 | source "drivers/parport/Kconfig" | |
971 | ||
972 | source "drivers/pnp/Kconfig" | |
973 | ||
974 | source "drivers/block/Kconfig" | |
975 | ||
976 | source "drivers/acorn/block/Kconfig" | |
977 | ||
3f7e5815 | 978 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \ |
bb011b8e | 979 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ |
c4713074 LB |
980 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \ |
981 | || ARCH_IXP23XX | |
1da177e4 LT |
982 | source "drivers/ide/Kconfig" |
983 | endif | |
984 | ||
985 | source "drivers/scsi/Kconfig" | |
986 | ||
eb370f0b MM |
987 | source "drivers/ata/Kconfig" |
988 | ||
1da177e4 LT |
989 | source "drivers/md/Kconfig" |
990 | ||
991 | source "drivers/message/fusion/Kconfig" | |
992 | ||
993 | source "drivers/ieee1394/Kconfig" | |
994 | ||
995 | source "drivers/message/i2o/Kconfig" | |
996 | ||
d5950b43 | 997 | source "drivers/net/Kconfig" |
1da177e4 LT |
998 | |
999 | source "drivers/isdn/Kconfig" | |
1000 | ||
1001 | # input before char - char/joystick depends on it. As does USB. | |
1002 | ||
1003 | source "drivers/input/Kconfig" | |
1004 | ||
1005 | source "drivers/char/Kconfig" | |
1006 | ||
1007 | source "drivers/i2c/Kconfig" | |
1008 | ||
8ae12a0d DB |
1009 | source "drivers/spi/Kconfig" |
1010 | ||
04916c0e AZ |
1011 | source "drivers/w1/Kconfig" |
1012 | ||
ad2f931d JD |
1013 | source "drivers/hwmon/Kconfig" |
1014 | ||
1da177e4 LT |
1015 | #source "drivers/l3/Kconfig" |
1016 | ||
1017 | source "drivers/misc/Kconfig" | |
1018 | ||
a4e137ab RK |
1019 | source "drivers/mfd/Kconfig" |
1020 | ||
c72a1d60 RP |
1021 | source "drivers/leds/Kconfig" |
1022 | ||
1da177e4 LT |
1023 | source "drivers/media/Kconfig" |
1024 | ||
1025 | source "drivers/video/Kconfig" | |
1026 | ||
1027 | source "sound/Kconfig" | |
1028 | ||
c2dade51 SH |
1029 | source "drivers/hid/Kconfig" |
1030 | ||
1da177e4 LT |
1031 | source "drivers/usb/Kconfig" |
1032 | ||
1033 | source "drivers/mmc/Kconfig" | |
1034 | ||
12b824fb AZ |
1035 | source "drivers/rtc/Kconfig" |
1036 | ||
5816815f DW |
1037 | source "drivers/dma/Kconfig" |
1038 | ||
1da177e4 LT |
1039 | endmenu |
1040 | ||
1041 | source "fs/Kconfig" | |
1042 | ||
1043 | source "arch/arm/oprofile/Kconfig" | |
1044 | ||
1045 | source "arch/arm/Kconfig.debug" | |
1046 | ||
1047 | source "security/Kconfig" | |
1048 | ||
1049 | source "crypto/Kconfig" | |
1050 | ||
1051 | source "lib/Kconfig" |