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Commit | Line | Data |
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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 |
1da177e4 LT |
12 | help |
13 | The ARM series is a line of low-power-consumption RISC chip designs | |
f6c8965a | 14 | licensed by ARM Ltd and targeted at embedded applications and |
1da177e4 | 15 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer |
f6c8965a | 16 | manufactured, but legacy ARM-based PC hardware remains popular in |
1da177e4 LT |
17 | Europe. There is an ARM Linux project with a web page at |
18 | <http://www.arm.linux.org.uk/>. | |
19 | ||
746140c7 KH |
20 | config GENERIC_TIME |
21 | bool | |
22 | default n | |
23 | ||
1da177e4 LT |
24 | config MMU |
25 | bool | |
26 | default y | |
27 | ||
28 | config EISA | |
29 | bool | |
30 | ---help--- | |
31 | The Extended Industry Standard Architecture (EISA) bus was | |
32 | developed as an open alternative to the IBM MicroChannel bus. | |
33 | ||
34 | The EISA bus provided some of the features of the IBM MicroChannel | |
35 | bus while maintaining backward compatibility with cards made for | |
36 | the older ISA bus. The EISA bus saw limited use between 1988 and | |
37 | 1995 when it was made obsolete by the PCI bus. | |
38 | ||
39 | Say Y here if you are building a kernel for an EISA-based machine. | |
40 | ||
41 | Otherwise, say N. | |
42 | ||
43 | config SBUS | |
44 | bool | |
45 | ||
46 | config MCA | |
47 | bool | |
48 | help | |
49 | MicroChannel Architecture is found in some IBM PS/2 machines and | |
50 | laptops. It is a bus system similar to PCI or ISA. See | |
51 | <file:Documentation/mca.txt> (and especially the web page given | |
52 | there) before attempting to build an MCA bus kernel. | |
53 | ||
4a2581a0 TG |
54 | config GENERIC_HARDIRQS |
55 | bool | |
56 | default y | |
57 | ||
7ad1bcb2 RK |
58 | config TRACE_IRQFLAGS_SUPPORT |
59 | bool | |
60 | default y | |
61 | ||
4a2581a0 TG |
62 | config HARDIRQS_SW_RESEND |
63 | bool | |
64 | default y | |
65 | ||
66 | config GENERIC_IRQ_PROBE | |
67 | bool | |
68 | default y | |
69 | ||
1da177e4 LT |
70 | config RWSEM_GENERIC_SPINLOCK |
71 | bool | |
72 | default y | |
73 | ||
74 | config RWSEM_XCHGADD_ALGORITHM | |
75 | bool | |
76 | ||
f0d1b0b3 DH |
77 | config ARCH_HAS_ILOG2_U32 |
78 | bool | |
79 | default n | |
80 | ||
81 | config ARCH_HAS_ILOG2_U64 | |
82 | bool | |
83 | default n | |
84 | ||
b89c3b16 AM |
85 | config GENERIC_HWEIGHT |
86 | bool | |
87 | default y | |
88 | ||
1da177e4 LT |
89 | config GENERIC_CALIBRATE_DELAY |
90 | bool | |
91 | default y | |
92 | ||
93 | config GENERIC_BUST_SPINLOCK | |
94 | bool | |
95 | ||
a08b6b79 AV |
96 | config ARCH_MAY_HAVE_PC_FDC |
97 | bool | |
98 | ||
1da177e4 LT |
99 | config GENERIC_ISA_DMA |
100 | bool | |
101 | ||
1da177e4 LT |
102 | config FIQ |
103 | bool | |
104 | ||
034d2f5a AV |
105 | config ARCH_MTD_XIP |
106 | bool | |
107 | ||
c760fc19 HC |
108 | config VECTORS_BASE |
109 | hex | |
6afd6fae | 110 | default 0xffff0000 if MMU || CPU_HIGH_VECTOR |
c760fc19 HC |
111 | default DRAM_BASE if REMAP_VECTORS_TO_RAM |
112 | default 0x00000000 | |
113 | help | |
114 | The base address of exception vectors. | |
115 | ||
1da177e4 LT |
116 | source "init/Kconfig" |
117 | ||
118 | menu "System Type" | |
119 | ||
120 | choice | |
121 | prompt "ARM system type" | |
6a0e2430 | 122 | default ARCH_VERSATILE |
1da177e4 | 123 | |
4af6fee1 DS |
124 | config ARCH_AAEC2000 |
125 | bool "Agilent AAEC-2000 based" | |
126 | select ARM_AMBA | |
127 | help | |
128 | This enables support for systems based on the Agilent AAEC-2000 | |
129 | ||
130 | config ARCH_INTEGRATOR | |
131 | bool "ARM Ltd. Integrator family" | |
132 | select ARM_AMBA | |
133 | select ICST525 | |
134 | help | |
135 | Support for ARM's Integrator platform. | |
136 | ||
137 | config ARCH_REALVIEW | |
138 | bool "ARM Ltd. RealView family" | |
139 | select ARM_AMBA | |
140 | select ICST307 | |
141 | help | |
142 | This enables support for ARM Ltd RealView boards. | |
143 | ||
144 | config ARCH_VERSATILE | |
145 | bool "ARM Ltd. Versatile family" | |
146 | select ARM_AMBA | |
147 | select ARM_VIC | |
148 | select ICST307 | |
149 | help | |
150 | This enables support for ARM Ltd Versatile board. | |
151 | ||
8fc5ffa0 AV |
152 | config ARCH_AT91 |
153 | bool "Atmel AT91" | |
4af6fee1 | 154 | help |
8fc5ffa0 AV |
155 | This enables support for systems based on the Atmel AT91RM9200 |
156 | and AT91SAM9xxx processors. | |
4af6fee1 | 157 | |
1da177e4 | 158 | config ARCH_CLPS7500 |
4af6fee1 | 159 | bool "Cirrus CL-PS7500FE" |
1da177e4 | 160 | select TIMER_ACORN |
f7e68bbf | 161 | select ISA |
f999b8bd MM |
162 | help |
163 | Support for the Cirrus Logic PS7500FE system-on-a-chip. | |
1da177e4 LT |
164 | |
165 | config ARCH_CLPS711X | |
4af6fee1 | 166 | bool "Cirrus Logic CLPS711x/EP721x-based" |
f999b8bd MM |
167 | help |
168 | Support for Cirrus Logic 711x/721x based boards. | |
1da177e4 LT |
169 | |
170 | config ARCH_CO285 | |
171 | bool "Co-EBSA285" | |
172 | select FOOTBRIDGE | |
173 | select FOOTBRIDGE_ADDIN | |
f999b8bd MM |
174 | help |
175 | Support for Intel's EBSA285 companion chip. | |
1da177e4 LT |
176 | |
177 | config ARCH_EBSA110 | |
178 | bool "EBSA-110" | |
f7e68bbf | 179 | select ISA |
1da177e4 LT |
180 | help |
181 | This is an evaluation board for the StrongARM processor available | |
f6c8965a | 182 | from Digital. It has limited hardware on-board, including an |
1da177e4 LT |
183 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
184 | parallel port. | |
185 | ||
e7736d47 LB |
186 | config ARCH_EP93XX |
187 | bool "EP93xx-based" | |
188 | select ARM_AMBA | |
189 | select ARM_VIC | |
190 | help | |
191 | This enables support for the Cirrus EP93xx series of CPUs. | |
192 | ||
1da177e4 LT |
193 | config ARCH_FOOTBRIDGE |
194 | bool "FootBridge" | |
195 | select FOOTBRIDGE | |
f999b8bd MM |
196 | help |
197 | Support for systems based on the DC21285 companion chip | |
198 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
1da177e4 | 199 | |
4af6fee1 DS |
200 | config ARCH_NETX |
201 | bool "Hilscher NetX based" | |
202 | select ARM_VIC | |
f999b8bd | 203 | help |
4af6fee1 DS |
204 | This enables support for systems based on the Hilscher NetX Soc |
205 | ||
206 | config ARCH_H720X | |
207 | bool "Hynix HMS720x-based" | |
208 | select ISA_DMA_API | |
209 | help | |
210 | This enables support for systems based on the Hynix HMS720x | |
211 | ||
212 | config ARCH_IMX | |
213 | bool "IMX" | |
214 | help | |
215 | Support for Motorola's i.MX family of processors (MX1, MXL). | |
1da177e4 | 216 | |
3f7e5815 LB |
217 | config ARCH_IOP32X |
218 | bool "IOP32x-based" | |
a4f7e763 | 219 | depends on MMU |
7ae1f7ec | 220 | select PLAT_IOP |
f7e68bbf | 221 | select PCI |
f999b8bd | 222 | help |
3f7e5815 LB |
223 | Support for Intel's 80219 and IOP32X (XScale) family of |
224 | processors. | |
225 | ||
226 | config ARCH_IOP33X | |
227 | bool "IOP33x-based" | |
228 | depends on MMU | |
7ae1f7ec | 229 | select PLAT_IOP |
3f7e5815 LB |
230 | select PCI |
231 | help | |
232 | Support for Intel's IOP33X (XScale) family of processors. | |
1da177e4 | 233 | |
285f5fa7 DW |
234 | config ARCH_IOP13XX |
235 | bool "IOP13xx-based" | |
236 | select PCI | |
237 | help | |
238 | Support for Intel's IOP13XX (XScale) family of processors. | |
239 | ||
1da177e4 LT |
240 | config ARCH_IXP4XX |
241 | bool "IXP4xx-based" | |
a4f7e763 | 242 | depends on MMU |
84904d0e | 243 | select GENERIC_TIME |
f999b8bd MM |
244 | help |
245 | Support for Intel's IXP4XX (XScale) family of processors. | |
1da177e4 LT |
246 | |
247 | config ARCH_IXP2000 | |
248 | bool "IXP2400/2800-based" | |
a4f7e763 | 249 | depends on MMU |
f7e68bbf | 250 | select PCI |
f999b8bd MM |
251 | help |
252 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
1da177e4 | 253 | |
c4713074 LB |
254 | config ARCH_IXP23XX |
255 | bool "IXP23XX-based" | |
a4f7e763 | 256 | depends on MMU |
c4713074 LB |
257 | select PCI |
258 | help | |
259 | Support for Intel's IXP23xx (XScale) family of processors. | |
260 | ||
1da177e4 LT |
261 | config ARCH_L7200 |
262 | bool "LinkUp-L7200" | |
263 | select FIQ | |
264 | help | |
265 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
266 | L7200 Software Development Board which uses an ARM720T processor. | |
267 | Information on this board can be obtained at: | |
268 | ||
269 | <http://www.linkupsys.com/> | |
270 | ||
271 | If you have any questions or comments about the Linux kernel port | |
272 | to this board, send e-mail to <sjhill@cotw.com>. | |
273 | ||
9918cda5 UKK |
274 | config ARCH_NS9XXX |
275 | bool "NetSilicon NS9xxx" | |
276 | help | |
277 | Say Y here if you intend to run this kernel on a NetSilicon NS9xxx | |
278 | System. | |
279 | ||
280 | <http://www.digi.com/products/microprocessors/index.jsp> | |
281 | ||
4af6fee1 DS |
282 | config ARCH_PNX4008 |
283 | bool "Philips Nexperia PNX4008 Mobile" | |
284 | help | |
285 | This enables support for Philips PNX4008 mobile platform. | |
286 | ||
1da177e4 LT |
287 | config ARCH_PXA |
288 | bool "PXA2xx-based" | |
a4f7e763 | 289 | depends on MMU |
034d2f5a | 290 | select ARCH_MTD_XIP |
f999b8bd MM |
291 | help |
292 | Support for Intel's PXA2XX processor line. | |
1da177e4 LT |
293 | |
294 | config ARCH_RPC | |
295 | bool "RiscPC" | |
296 | select ARCH_ACORN | |
297 | select FIQ | |
298 | select TIMER_ACORN | |
a08b6b79 | 299 | select ARCH_MAY_HAVE_PC_FDC |
065909b9 | 300 | select ISA_DMA_API |
1da177e4 LT |
301 | help |
302 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
303 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
304 | ||
305 | config ARCH_SA1100 | |
306 | bool "SA1100-based" | |
f7e68bbf | 307 | select ISA |
3cd9e19e | 308 | select ARCH_DISCONTIGMEM_ENABLE |
034d2f5a | 309 | select ARCH_MTD_XIP |
f999b8bd MM |
310 | help |
311 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
312 | |
313 | config ARCH_S3C2410 | |
cd701aa2 | 314 | bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442" |
1da177e4 LT |
315 | help |
316 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
317 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 318 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 LT |
319 | |
320 | config ARCH_SHARK | |
321 | bool "Shark" | |
f7e68bbf RK |
322 | select ISA |
323 | select ISA_DMA | |
324 | select PCI | |
f999b8bd MM |
325 | help |
326 | Support for the StrongARM based Digital DNARD machine, also known | |
327 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
328 | |
329 | config ARCH_LH7A40X | |
330 | bool "Sharp LH7A40X" | |
331 | help | |
332 | Say Y here for systems based on one of the Sharp LH7A40X | |
333 | System on a Chip processors. These CPUs include an ARM922T | |
334 | core with a wide array of integrated devices for | |
335 | hand-held and low-power applications. | |
336 | ||
337 | config ARCH_OMAP | |
338 | bool "TI OMAP" | |
f999b8bd MM |
339 | help |
340 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
1da177e4 | 341 | |
1da177e4 LT |
342 | endchoice |
343 | ||
344 | source "arch/arm/mach-clps711x/Kconfig" | |
345 | ||
e7736d47 LB |
346 | source "arch/arm/mach-ep93xx/Kconfig" |
347 | ||
1da177e4 LT |
348 | source "arch/arm/mach-footbridge/Kconfig" |
349 | ||
350 | source "arch/arm/mach-integrator/Kconfig" | |
351 | ||
3f7e5815 LB |
352 | source "arch/arm/mach-iop32x/Kconfig" |
353 | ||
354 | source "arch/arm/mach-iop33x/Kconfig" | |
1da177e4 | 355 | |
285f5fa7 DW |
356 | source "arch/arm/mach-iop13xx/Kconfig" |
357 | ||
1da177e4 LT |
358 | source "arch/arm/mach-ixp4xx/Kconfig" |
359 | ||
360 | source "arch/arm/mach-ixp2000/Kconfig" | |
361 | ||
c4713074 LB |
362 | source "arch/arm/mach-ixp23xx/Kconfig" |
363 | ||
1da177e4 LT |
364 | source "arch/arm/mach-pxa/Kconfig" |
365 | ||
366 | source "arch/arm/mach-sa1100/Kconfig" | |
367 | ||
d48af15e TL |
368 | source "arch/arm/plat-omap/Kconfig" |
369 | ||
370 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 371 | |
1dbae815 TL |
372 | source "arch/arm/mach-omap2/Kconfig" |
373 | ||
1da177e4 LT |
374 | source "arch/arm/mach-s3c2410/Kconfig" |
375 | ||
376 | source "arch/arm/mach-lh7a40x/Kconfig" | |
377 | ||
378 | source "arch/arm/mach-imx/Kconfig" | |
379 | ||
380 | source "arch/arm/mach-h720x/Kconfig" | |
381 | ||
382 | source "arch/arm/mach-versatile/Kconfig" | |
383 | ||
038c5b60 BN |
384 | source "arch/arm/mach-aaec2000/Kconfig" |
385 | ||
8ad68bbf CM |
386 | source "arch/arm/mach-realview/Kconfig" |
387 | ||
73a59c1c SP |
388 | source "arch/arm/mach-at91rm9200/Kconfig" |
389 | ||
bb6d8c88 SH |
390 | source "arch/arm/mach-netx/Kconfig" |
391 | ||
9918cda5 UKK |
392 | source "arch/arm/mach-ns9xxx/Kconfig" |
393 | ||
1da177e4 LT |
394 | # Definitions to make life easier |
395 | config ARCH_ACORN | |
396 | bool | |
397 | ||
7ae1f7ec LB |
398 | config PLAT_IOP |
399 | bool | |
400 | ||
1da177e4 LT |
401 | source arch/arm/mm/Kconfig |
402 | ||
afe4b25e LB |
403 | config IWMMXT |
404 | bool "Enable iWMMXt support" | |
405 | depends CPU_XSCALE || CPU_XSC3 | |
406 | default y if PXA27x | |
407 | help | |
408 | Enable support for iWMMXt context switching at run time if | |
409 | running on a CPU that supports it. | |
410 | ||
1da177e4 LT |
411 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER |
412 | config XSCALE_PMU | |
413 | bool | |
414 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
415 | default y | |
416 | ||
3b93e7b0 HC |
417 | if !MMU |
418 | source "arch/arm/Kconfig-nommu" | |
419 | endif | |
420 | ||
1da177e4 LT |
421 | endmenu |
422 | ||
423 | source "arch/arm/common/Kconfig" | |
424 | ||
425 | config FORCE_MAX_ZONEORDER | |
426 | int | |
427 | depends on SA1111 | |
428 | default "9" | |
429 | ||
430 | menu "Bus support" | |
431 | ||
432 | config ARM_AMBA | |
433 | bool | |
434 | ||
435 | config ISA | |
436 | bool | |
1da177e4 LT |
437 | help |
438 | Find out whether you have ISA slots on your motherboard. ISA is the | |
439 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
440 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
441 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
442 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
443 | ||
065909b9 | 444 | # Select ISA DMA controller support |
1da177e4 LT |
445 | config ISA_DMA |
446 | bool | |
065909b9 | 447 | select ISA_DMA_API |
1da177e4 | 448 | |
065909b9 | 449 | # Select ISA DMA interface |
5cae841b AV |
450 | config ISA_DMA_API |
451 | bool | |
5cae841b | 452 | |
1da177e4 | 453 | config PCI |
68939121 | 454 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX |
1da177e4 LT |
455 | help |
456 | Find out whether you have a PCI motherboard. PCI is the name of a | |
457 | bus system, i.e. the way the CPU talks to the other stuff inside | |
458 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
459 | VESA. If you have PCI, say Y, otherwise N. | |
460 | ||
461 | The PCI-HOWTO, available from | |
462 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
463 | information about which PCI hardware does work under Linux and which | |
464 | doesn't. | |
465 | ||
466 | # Select the host bridge type | |
467 | config PCI_HOST_VIA82C505 | |
468 | bool | |
469 | depends on PCI && ARCH_SHARK | |
470 | default y | |
471 | ||
472 | source "drivers/pci/Kconfig" | |
473 | ||
474 | source "drivers/pcmcia/Kconfig" | |
475 | ||
476 | endmenu | |
477 | ||
478 | menu "Kernel Features" | |
479 | ||
480 | config SMP | |
481 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f6db449c | 482 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
1da177e4 LT |
483 | help |
484 | This enables support for systems with more than one CPU. If you have | |
485 | a system with only one CPU, like most personal computers, say N. If | |
486 | you have a system with more than one CPU, say Y. | |
487 | ||
488 | If you say N here, the kernel will run on single and multiprocessor | |
489 | machines, but will use only one CPU of a multiprocessor machine. If | |
490 | you say Y here, the kernel will run on many, but not all, single | |
491 | processor machines. On a single processor machine, the kernel will | |
492 | run faster if you say N here. | |
493 | ||
12c62c2e AO |
494 | See also the <file:Documentation/smp.txt>, |
495 | <file:Documentation/i386/IO-APIC.txt>, | |
1da177e4 LT |
496 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
497 | <http://www.linuxdoc.org/docs.html#howto>. | |
498 | ||
499 | If you don't know what to do here, say N. | |
500 | ||
501 | config NR_CPUS | |
502 | int "Maximum number of CPUs (2-32)" | |
503 | range 2 32 | |
504 | depends on SMP | |
505 | default "4" | |
506 | ||
a054a811 RK |
507 | config HOTPLUG_CPU |
508 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
509 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
510 | help | |
511 | Say Y here to experiment with turning CPUs off and on. CPUs | |
512 | can be controlled through /sys/devices/system/cpu. | |
513 | ||
37ee16ae RK |
514 | config LOCAL_TIMERS |
515 | bool "Use local timer interrupts" | |
2a98beb6 | 516 | depends on SMP && REALVIEW_MPCORE |
37ee16ae RK |
517 | default y |
518 | help | |
519 | Enable support for local timers on SMP platforms, rather then the | |
520 | legacy IPI broadcast method. Local timers allows the system | |
521 | accounting to be spread across the timer interval, preventing a | |
522 | "thundering herd" at every timer tick. | |
523 | ||
1da177e4 LT |
524 | config PREEMPT |
525 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
526 | depends on EXPERIMENTAL | |
527 | help | |
528 | This option reduces the latency of the kernel when reacting to | |
529 | real-time or interactive events by allowing a low priority process to | |
530 | be preempted even if it is in kernel mode executing a system call. | |
531 | This allows applications to run more reliably even when the system is | |
532 | under load. | |
533 | ||
534 | Say Y here if you are building a kernel for a desktop, embedded | |
535 | or real-time system. Say N if you are unsure. | |
536 | ||
8749af68 RK |
537 | config NO_IDLE_HZ |
538 | bool "Dynamic tick timer" | |
539 | help | |
540 | Select this option if you want to disable continuous timer ticks | |
541 | and have them programmed to occur as required. This option saves | |
542 | power as the system can remain in idle state for longer. | |
543 | ||
544 | By default dynamic tick is disabled during the boot, and can be | |
545 | manually enabled with: | |
546 | ||
547 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick | |
548 | ||
549 | Alternatively, if you want dynamic tick automatically enabled | |
550 | during boot, pass "dyntick=enable" via the kernel command string. | |
551 | ||
f2be64b3 TL |
552 | Please note that dynamic tick may affect the accuracy of |
553 | timekeeping on some platforms depending on the implementation. | |
569d2c34 NP |
554 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
555 | to have accurate timekeeping with dynamic tick. | |
f2be64b3 | 556 | |
f8065813 RK |
557 | config HZ |
558 | int | |
559 | default 128 if ARCH_L7200 | |
560 | default 200 if ARCH_EBSA110 || ARCH_S3C2410 | |
bfe65704 | 561 | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER |
f8065813 RK |
562 | default 100 |
563 | ||
704bdda0 NP |
564 | config AEABI |
565 | bool "Use the ARM EABI to compile the kernel" | |
566 | help | |
567 | This option allows for the kernel to be compiled using the latest | |
568 | ARM ABI (aka EABI). This is only useful if you are using a user | |
569 | space environment that is also compiled with EABI. | |
570 | ||
571 | Since there are major incompatibilities between the legacy ABI and | |
572 | EABI, especially with regard to structure member alignment, this | |
573 | option also changes the kernel syscall calling convention to | |
574 | disambiguate both ABIs and allow for backward compatibility support | |
575 | (selected with CONFIG_OABI_COMPAT). | |
576 | ||
577 | To use this you need GCC version 4.0.0 or later. | |
578 | ||
6c90c872 | 579 | config OABI_COMPAT |
a73a3ff1 | 580 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
61c484d4 | 581 | depends on AEABI && EXPERIMENTAL |
6c90c872 NP |
582 | default y |
583 | help | |
584 | This option preserves the old syscall interface along with the | |
585 | new (ARM EABI) one. It also provides a compatibility layer to | |
586 | intercept syscalls that have structure arguments which layout | |
587 | in memory differs between the legacy ABI and the new ARM EABI | |
588 | (only for non "thumb" binaries). This option adds a tiny | |
589 | overhead to all syscalls and produces a slightly larger kernel. | |
590 | If you know you'll be using only pure EABI user space then you | |
591 | can say N here. If this option is not selected and you attempt | |
592 | to execute a legacy ABI binary then the result will be | |
593 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
594 | at all). If in doubt say Y. | |
595 | ||
3f22ab27 | 596 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 597 | bool |
f7e68bbf | 598 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
599 | help |
600 | Say Y to support efficient handling of discontiguous physical memory, | |
601 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
602 | or have huge holes in the physical address space for other reasons. | |
603 | See <file:Documentation/vm/numa> for more. | |
604 | ||
c80d79d7 YG |
605 | config NODES_SHIFT |
606 | int | |
607 | default "4" if ARCH_LH7A40X | |
608 | default "2" | |
609 | depends on NEED_MULTIPLE_NODES | |
610 | ||
3f22ab27 DH |
611 | source "mm/Kconfig" |
612 | ||
1da177e4 LT |
613 | config LEDS |
614 | bool "Timer and CPU usage LEDs" | |
615 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
616 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
617 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
618 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c | 619 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
58a0cd78 | 620 | ARCH_AT91 || MACH_TRIZEPS4 |
1da177e4 LT |
621 | help |
622 | If you say Y here, the LEDs on your machine will be used | |
623 | to provide useful information about your current system status. | |
624 | ||
625 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
626 | be able to select which LEDs are active using the options below. If | |
627 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
628 | red LED will simply flash regularly to indicate that the system is | |
629 | still functional. It is safe to say Y here if you have a CATS | |
630 | system, but the driver will do nothing. | |
631 | ||
632 | config LEDS_TIMER | |
633 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
634 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
635 | depends on LEDS | |
636 | default y if ARCH_EBSA110 | |
637 | help | |
638 | If you say Y here, one of the system LEDs (the green one on the | |
639 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
640 | will flash regularly to indicate that the system is still | |
641 | operational. This is mainly useful to kernel hackers who are | |
642 | debugging unstable kernels. | |
643 | ||
644 | The LART uses the same LED for both Timer LED and CPU usage LED | |
645 | functions. You may choose to use both, but the Timer LED function | |
646 | will overrule the CPU usage LED. | |
647 | ||
648 | config LEDS_CPU | |
649 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
650 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
651 | depends on LEDS | |
652 | help | |
653 | If you say Y here, the red LED will be used to give a good real | |
654 | time indication of CPU usage, by lighting whenever the idle task | |
655 | is not currently executing. | |
656 | ||
657 | The LART uses the same LED for both Timer LED and CPU usage LED | |
658 | functions. You may choose to use both, but the Timer LED function | |
659 | will overrule the CPU usage LED. | |
660 | ||
661 | config ALIGNMENT_TRAP | |
662 | bool | |
f12d0d7c | 663 | depends on CPU_CP15_MMU |
1da177e4 LT |
664 | default y if !ARCH_EBSA110 |
665 | help | |
84eb8d06 | 666 | ARM processors cannot fetch/store information which is not |
1da177e4 LT |
667 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an |
668 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
669 | fetch/store instructions will be emulated in software if you say | |
670 | here, which has a severe performance impact. This is necessary for | |
671 | correct operation of some network protocols. With an IP-only | |
672 | configuration it is safe to say N, otherwise say Y. | |
673 | ||
674 | endmenu | |
675 | ||
676 | menu "Boot options" | |
677 | ||
678 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
679 | # TEXT and BSS so we preserve their values in the config files. | |
680 | config ZBOOT_ROM_TEXT | |
681 | hex "Compressed ROM boot loader base address" | |
682 | default "0" | |
683 | help | |
684 | The physical address at which the ROM-able zImage is to be | |
685 | placed in the target. Platforms which normally make use of | |
686 | ROM-able zImage formats normally set this to a suitable | |
687 | value in their defconfig file. | |
688 | ||
689 | If ZBOOT_ROM is not enabled, this has no effect. | |
690 | ||
691 | config ZBOOT_ROM_BSS | |
692 | hex "Compressed ROM boot loader BSS address" | |
693 | default "0" | |
694 | help | |
f8c440b2 DF |
695 | The base address of an area of read/write memory in the target |
696 | for the ROM-able zImage which must be available while the | |
697 | decompressor is running. It must be large enough to hold the | |
698 | entire decompressed kernel plus an additional 128 KiB. | |
699 | Platforms which normally make use of ROM-able zImage formats | |
700 | normally set this to a suitable value in their defconfig file. | |
1da177e4 LT |
701 | |
702 | If ZBOOT_ROM is not enabled, this has no effect. | |
703 | ||
704 | config ZBOOT_ROM | |
705 | bool "Compressed boot loader in ROM/flash" | |
706 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
707 | help | |
708 | Say Y here if you intend to execute your compressed kernel image | |
709 | (zImage) directly from ROM or flash. If unsure, say N. | |
710 | ||
711 | config CMDLINE | |
712 | string "Default kernel command string" | |
713 | default "" | |
714 | help | |
715 | On some architectures (EBSA110 and CATS), there is currently no way | |
716 | for the boot loader to pass arguments to the kernel. For these | |
717 | architectures, you should supply some command-line options at build | |
718 | time by entering them here. As a minimum, you should specify the | |
719 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
720 | ||
721 | config XIP_KERNEL | |
722 | bool "Kernel Execute-In-Place from ROM" | |
723 | depends on !ZBOOT_ROM | |
724 | help | |
725 | Execute-In-Place allows the kernel to run from non-volatile storage | |
726 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
727 | space since the text section of the kernel is not loaded from flash | |
728 | to RAM. Read-write sections, such as the data section and stack, | |
729 | are still copied to RAM. The XIP kernel is not compressed since | |
730 | it has to run directly from flash, so it will take more space to | |
731 | store it. The flash address used to link the kernel object files, | |
732 | and for storing it, is configuration dependent. Therefore, if you | |
733 | say Y here, you must know the proper physical address where to | |
734 | store the kernel image depending on your own flash memory usage. | |
735 | ||
736 | Also note that the make target becomes "make xipImage" rather than | |
737 | "make zImage" or "make Image". The final kernel binary to put in | |
738 | ROM memory will be arch/arm/boot/xipImage. | |
739 | ||
740 | If unsure, say N. | |
741 | ||
742 | config XIP_PHYS_ADDR | |
743 | hex "XIP Kernel Physical Location" | |
744 | depends on XIP_KERNEL | |
745 | default "0x00080000" | |
746 | help | |
747 | This is the physical address in your flash memory the kernel will | |
748 | be linked for and stored to. This address is dependent on your | |
749 | own flash usage. | |
750 | ||
751 | endmenu | |
752 | ||
3c8cd0cc | 753 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX ) |
1da177e4 LT |
754 | |
755 | menu "CPU Frequency scaling" | |
756 | ||
757 | source "drivers/cpufreq/Kconfig" | |
758 | ||
759 | config CPU_FREQ_SA1100 | |
760 | bool | |
07c6d48f | 761 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
762 | default y |
763 | ||
764 | config CPU_FREQ_SA1110 | |
765 | bool | |
766 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
767 | default y | |
768 | ||
769 | config CPU_FREQ_INTEGRATOR | |
770 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
771 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
772 | default y | |
773 | help | |
774 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
775 | ||
776 | For details, take a look at <file:Documentation/cpu-freq>. | |
777 | ||
778 | If in doubt, say Y. | |
779 | ||
3c8cd0cc PP |
780 | config CPU_FREQ_IMX |
781 | tristate "CPUfreq driver for i.MX CPUs" | |
782 | depends on ARCH_IMX && CPU_FREQ | |
783 | default n | |
784 | help | |
785 | This enables the CPUfreq driver for i.MX CPUs. | |
786 | ||
787 | If in doubt, say N. | |
788 | ||
1da177e4 LT |
789 | endmenu |
790 | ||
791 | endif | |
792 | ||
793 | menu "Floating point emulation" | |
794 | ||
795 | comment "At least one emulation must be selected" | |
796 | ||
797 | config FPE_NWFPE | |
798 | bool "NWFPE math emulation" | |
8993a44c | 799 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
800 | ---help--- |
801 | Say Y to include the NWFPE floating point emulator in the kernel. | |
802 | This is necessary to run most binaries. Linux does not currently | |
803 | support floating point hardware so you need to say Y here even if | |
804 | your machine has an FPA or floating point co-processor podule. | |
805 | ||
806 | You may say N here if you are going to load the Acorn FPEmulator | |
807 | early in the bootup. | |
808 | ||
809 | config FPE_NWFPE_XP | |
810 | bool "Support extended precision" | |
bedf142b | 811 | depends on FPE_NWFPE |
1da177e4 LT |
812 | help |
813 | Say Y to include 80-bit support in the kernel floating-point | |
814 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
815 | Note that gcc does not generate 80-bit operations by default, | |
816 | so in most cases this option only enlarges the size of the | |
817 | floating point emulator without any good reason. | |
818 | ||
819 | You almost surely want to say N here. | |
820 | ||
821 | config FPE_FASTFPE | |
822 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 823 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
824 | ---help--- |
825 | Say Y here to include the FAST floating point emulator in the kernel. | |
826 | This is an experimental much faster emulator which now also has full | |
827 | precision for the mantissa. It does not support any exceptions. | |
828 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
829 | ||
830 | It should be sufficient for most programs. It may be not suitable | |
831 | for scientific calculations, but you have to check this for yourself. | |
832 | If you do not feel you need a faster FP emulation you should better | |
833 | choose NWFPE. | |
834 | ||
835 | config VFP | |
836 | bool "VFP-format floating point maths" | |
837 | depends on CPU_V6 || CPU_ARM926T | |
838 | help | |
839 | Say Y to include VFP support code in the kernel. This is needed | |
840 | if your hardware includes a VFP unit. | |
841 | ||
842 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
843 | release notes and additional status information. | |
844 | ||
845 | Say N if your target does not have VFP hardware. | |
846 | ||
847 | endmenu | |
848 | ||
849 | menu "Userspace binary formats" | |
850 | ||
851 | source "fs/Kconfig.binfmt" | |
852 | ||
853 | config ARTHUR | |
854 | tristate "RISC OS personality" | |
704bdda0 | 855 | depends on !AEABI |
1da177e4 LT |
856 | help |
857 | Say Y here to include the kernel code necessary if you want to run | |
858 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
859 | experimental; if this sounds frightening, say N and sleep in peace. | |
860 | You can also say M here to compile this support as a module (which | |
861 | will be called arthur). | |
862 | ||
863 | endmenu | |
864 | ||
865 | menu "Power management options" | |
866 | ||
eceab4ac | 867 | source "kernel/power/Kconfig" |
1da177e4 | 868 | |
1da177e4 LT |
869 | config APM |
870 | tristate "Advanced Power Management Emulation" | |
1da177e4 LT |
871 | ---help--- |
872 | APM is a BIOS specification for saving power using several different | |
873 | techniques. This is mostly useful for battery powered laptops with | |
874 | APM compliant BIOSes. If you say Y here, the system time will be | |
875 | reset after a RESUME operation, the /proc/apm device will provide | |
876 | battery status information, and user-space programs will receive | |
877 | notification of APM "events" (e.g. battery status change). | |
878 | ||
1da177e4 LT |
879 | In order to use APM, you will need supporting software. For location |
880 | and more information, read <file:Documentation/pm.txt> and the | |
881 | Battery Powered Linux mini-HOWTO, available from | |
882 | <http://www.tldp.org/docs.html#howto>. | |
883 | ||
884 | This driver does not spin down disk drives (see the hdparm(8) | |
885 | manpage ("man 8 hdparm") for that), and it doesn't turn off | |
886 | VESA-compliant "green" monitors. | |
887 | ||
1da177e4 LT |
888 | Generally, if you don't have a battery in your machine, there isn't |
889 | much point in using this driver and you should say N. If you get | |
890 | random kernel OOPSes or reboots that don't seem to be related to | |
891 | anything, try disabling/enabling this option (or disabling/enabling | |
892 | APM in your BIOS). | |
893 | ||
1da177e4 LT |
894 | endmenu |
895 | ||
d5950b43 SR |
896 | source "net/Kconfig" |
897 | ||
1da177e4 LT |
898 | menu "Device Drivers" |
899 | ||
900 | source "drivers/base/Kconfig" | |
901 | ||
c35bf4a5 PM |
902 | source "drivers/connector/Kconfig" |
903 | ||
f12d0d7c | 904 | if ALIGNMENT_TRAP || !CPU_CP15_MMU |
1da177e4 LT |
905 | source "drivers/mtd/Kconfig" |
906 | endif | |
907 | ||
908 | source "drivers/parport/Kconfig" | |
909 | ||
910 | source "drivers/pnp/Kconfig" | |
911 | ||
912 | source "drivers/block/Kconfig" | |
913 | ||
914 | source "drivers/acorn/block/Kconfig" | |
915 | ||
3f7e5815 | 916 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP32X || ARCH_IOP33X || ARCH_IXP4XX \ |
bb011b8e | 917 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ |
c4713074 LB |
918 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \ |
919 | || ARCH_IXP23XX | |
1da177e4 LT |
920 | source "drivers/ide/Kconfig" |
921 | endif | |
922 | ||
923 | source "drivers/scsi/Kconfig" | |
924 | ||
eb370f0b MM |
925 | source "drivers/ata/Kconfig" |
926 | ||
1da177e4 LT |
927 | source "drivers/md/Kconfig" |
928 | ||
929 | source "drivers/message/fusion/Kconfig" | |
930 | ||
931 | source "drivers/ieee1394/Kconfig" | |
932 | ||
933 | source "drivers/message/i2o/Kconfig" | |
934 | ||
d5950b43 | 935 | source "drivers/net/Kconfig" |
1da177e4 LT |
936 | |
937 | source "drivers/isdn/Kconfig" | |
938 | ||
939 | # input before char - char/joystick depends on it. As does USB. | |
940 | ||
941 | source "drivers/input/Kconfig" | |
942 | ||
943 | source "drivers/char/Kconfig" | |
944 | ||
945 | source "drivers/i2c/Kconfig" | |
946 | ||
8ae12a0d DB |
947 | source "drivers/spi/Kconfig" |
948 | ||
04916c0e AZ |
949 | source "drivers/w1/Kconfig" |
950 | ||
ad2f931d JD |
951 | source "drivers/hwmon/Kconfig" |
952 | ||
1da177e4 LT |
953 | #source "drivers/l3/Kconfig" |
954 | ||
955 | source "drivers/misc/Kconfig" | |
956 | ||
a4e137ab RK |
957 | source "drivers/mfd/Kconfig" |
958 | ||
c72a1d60 RP |
959 | source "drivers/leds/Kconfig" |
960 | ||
1da177e4 LT |
961 | source "drivers/media/Kconfig" |
962 | ||
963 | source "drivers/video/Kconfig" | |
964 | ||
965 | source "sound/Kconfig" | |
966 | ||
c2dade51 SH |
967 | source "drivers/hid/Kconfig" |
968 | ||
1da177e4 LT |
969 | source "drivers/usb/Kconfig" |
970 | ||
971 | source "drivers/mmc/Kconfig" | |
972 | ||
12b824fb AZ |
973 | source "drivers/rtc/Kconfig" |
974 | ||
1da177e4 LT |
975 | endmenu |
976 | ||
977 | source "fs/Kconfig" | |
978 | ||
979 | source "arch/arm/oprofile/Kconfig" | |
980 | ||
981 | source "arch/arm/Kconfig.debug" | |
982 | ||
983 | source "security/Kconfig" | |
984 | ||
985 | source "crypto/Kconfig" | |
986 | ||
987 | source "lib/Kconfig" |