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 | ||
20 | config MMU | |
21 | bool | |
22 | default y | |
23 | ||
24 | config EISA | |
25 | bool | |
26 | ---help--- | |
27 | The Extended Industry Standard Architecture (EISA) bus was | |
28 | developed as an open alternative to the IBM MicroChannel bus. | |
29 | ||
30 | The EISA bus provided some of the features of the IBM MicroChannel | |
31 | bus while maintaining backward compatibility with cards made for | |
32 | the older ISA bus. The EISA bus saw limited use between 1988 and | |
33 | 1995 when it was made obsolete by the PCI bus. | |
34 | ||
35 | Say Y here if you are building a kernel for an EISA-based machine. | |
36 | ||
37 | Otherwise, say N. | |
38 | ||
39 | config SBUS | |
40 | bool | |
41 | ||
42 | config MCA | |
43 | bool | |
44 | help | |
45 | MicroChannel Architecture is found in some IBM PS/2 machines and | |
46 | laptops. It is a bus system similar to PCI or ISA. See | |
47 | <file:Documentation/mca.txt> (and especially the web page given | |
48 | there) before attempting to build an MCA bus kernel. | |
49 | ||
1da177e4 LT |
50 | config RWSEM_GENERIC_SPINLOCK |
51 | bool | |
52 | default y | |
53 | ||
54 | config RWSEM_XCHGADD_ALGORITHM | |
55 | bool | |
56 | ||
b89c3b16 AM |
57 | config GENERIC_HWEIGHT |
58 | bool | |
59 | default y | |
60 | ||
1da177e4 LT |
61 | config GENERIC_CALIBRATE_DELAY |
62 | bool | |
63 | default y | |
64 | ||
65 | config GENERIC_BUST_SPINLOCK | |
66 | bool | |
67 | ||
a08b6b79 Z |
68 | config ARCH_MAY_HAVE_PC_FDC |
69 | bool | |
70 | ||
1da177e4 LT |
71 | config GENERIC_ISA_DMA |
72 | bool | |
73 | ||
1da177e4 LT |
74 | config FIQ |
75 | bool | |
76 | ||
034d2f5a AV |
77 | config ARCH_MTD_XIP |
78 | bool | |
79 | ||
c760fc19 HC |
80 | config VECTORS_BASE |
81 | hex | |
82 | default 0xffff0000 if MMU | |
83 | default DRAM_BASE if REMAP_VECTORS_TO_RAM | |
84 | default 0x00000000 | |
85 | help | |
86 | The base address of exception vectors. | |
87 | ||
1da177e4 LT |
88 | source "init/Kconfig" |
89 | ||
90 | menu "System Type" | |
91 | ||
92 | choice | |
93 | prompt "ARM system type" | |
6a0e2430 | 94 | default ARCH_VERSATILE |
1da177e4 | 95 | |
4af6fee1 DS |
96 | config ARCH_AAEC2000 |
97 | bool "Agilent AAEC-2000 based" | |
98 | select ARM_AMBA | |
99 | help | |
100 | This enables support for systems based on the Agilent AAEC-2000 | |
101 | ||
102 | config ARCH_INTEGRATOR | |
103 | bool "ARM Ltd. Integrator family" | |
104 | select ARM_AMBA | |
105 | select ICST525 | |
106 | help | |
107 | Support for ARM's Integrator platform. | |
108 | ||
109 | config ARCH_REALVIEW | |
110 | bool "ARM Ltd. RealView family" | |
111 | select ARM_AMBA | |
112 | select ICST307 | |
113 | help | |
114 | This enables support for ARM Ltd RealView boards. | |
115 | ||
116 | config ARCH_VERSATILE | |
117 | bool "ARM Ltd. Versatile family" | |
118 | select ARM_AMBA | |
119 | select ARM_VIC | |
120 | select ICST307 | |
121 | help | |
122 | This enables support for ARM Ltd Versatile board. | |
123 | ||
124 | config ARCH_AT91RM9200 | |
125 | bool "Atmel AT91RM9200" | |
126 | help | |
127 | Say Y here if you intend to run this kernel on an Atmel | |
128 | AT91RM9200-based board. | |
129 | ||
1da177e4 | 130 | config ARCH_CLPS7500 |
4af6fee1 | 131 | bool "Cirrus CL-PS7500FE" |
1da177e4 | 132 | select TIMER_ACORN |
f7e68bbf | 133 | select ISA |
f999b8bd MM |
134 | help |
135 | Support for the Cirrus Logic PS7500FE system-on-a-chip. | |
1da177e4 LT |
136 | |
137 | config ARCH_CLPS711X | |
4af6fee1 | 138 | bool "Cirrus Logic CLPS711x/EP721x-based" |
f999b8bd MM |
139 | help |
140 | Support for Cirrus Logic 711x/721x based boards. | |
1da177e4 LT |
141 | |
142 | config ARCH_CO285 | |
143 | bool "Co-EBSA285" | |
144 | select FOOTBRIDGE | |
145 | select FOOTBRIDGE_ADDIN | |
f999b8bd MM |
146 | help |
147 | Support for Intel's EBSA285 companion chip. | |
1da177e4 LT |
148 | |
149 | config ARCH_EBSA110 | |
150 | bool "EBSA-110" | |
f7e68bbf | 151 | select ISA |
1da177e4 LT |
152 | help |
153 | This is an evaluation board for the StrongARM processor available | |
f6c8965a | 154 | from Digital. It has limited hardware on-board, including an |
1da177e4 LT |
155 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
156 | parallel port. | |
157 | ||
e7736d47 LB |
158 | config ARCH_EP93XX |
159 | bool "EP93xx-based" | |
160 | select ARM_AMBA | |
161 | select ARM_VIC | |
162 | help | |
163 | This enables support for the Cirrus EP93xx series of CPUs. | |
164 | ||
1da177e4 LT |
165 | config ARCH_FOOTBRIDGE |
166 | bool "FootBridge" | |
167 | select FOOTBRIDGE | |
f999b8bd MM |
168 | help |
169 | Support for systems based on the DC21285 companion chip | |
170 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
1da177e4 | 171 | |
4af6fee1 DS |
172 | config ARCH_NETX |
173 | bool "Hilscher NetX based" | |
174 | select ARM_VIC | |
f999b8bd | 175 | help |
4af6fee1 DS |
176 | This enables support for systems based on the Hilscher NetX Soc |
177 | ||
178 | config ARCH_H720X | |
179 | bool "Hynix HMS720x-based" | |
180 | select ISA_DMA_API | |
181 | help | |
182 | This enables support for systems based on the Hynix HMS720x | |
183 | ||
184 | config ARCH_IMX | |
185 | bool "IMX" | |
186 | help | |
187 | Support for Motorola's i.MX family of processors (MX1, MXL). | |
1da177e4 LT |
188 | |
189 | config ARCH_IOP3XX | |
190 | bool "IOP3xx-based" | |
f7e68bbf | 191 | select PCI |
f999b8bd MM |
192 | help |
193 | Support for Intel's IOP3XX (XScale) family of processors. | |
1da177e4 LT |
194 | |
195 | config ARCH_IXP4XX | |
196 | bool "IXP4xx-based" | |
f999b8bd MM |
197 | help |
198 | Support for Intel's IXP4XX (XScale) family of processors. | |
1da177e4 LT |
199 | |
200 | config ARCH_IXP2000 | |
201 | bool "IXP2400/2800-based" | |
f7e68bbf | 202 | select PCI |
f999b8bd MM |
203 | help |
204 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
1da177e4 | 205 | |
c4713074 LB |
206 | config ARCH_IXP23XX |
207 | bool "IXP23XX-based" | |
208 | select PCI | |
209 | help | |
210 | Support for Intel's IXP23xx (XScale) family of processors. | |
211 | ||
1da177e4 LT |
212 | config ARCH_L7200 |
213 | bool "LinkUp-L7200" | |
214 | select FIQ | |
215 | help | |
216 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
217 | L7200 Software Development Board which uses an ARM720T processor. | |
218 | Information on this board can be obtained at: | |
219 | ||
220 | <http://www.linkupsys.com/> | |
221 | ||
222 | If you have any questions or comments about the Linux kernel port | |
223 | to this board, send e-mail to <sjhill@cotw.com>. | |
224 | ||
4af6fee1 DS |
225 | config ARCH_PNX4008 |
226 | bool "Philips Nexperia PNX4008 Mobile" | |
227 | help | |
228 | This enables support for Philips PNX4008 mobile platform. | |
229 | ||
1da177e4 LT |
230 | config ARCH_PXA |
231 | bool "PXA2xx-based" | |
034d2f5a | 232 | select ARCH_MTD_XIP |
f999b8bd MM |
233 | help |
234 | Support for Intel's PXA2XX processor line. | |
1da177e4 LT |
235 | |
236 | config ARCH_RPC | |
237 | bool "RiscPC" | |
238 | select ARCH_ACORN | |
239 | select FIQ | |
240 | select TIMER_ACORN | |
a08b6b79 | 241 | select ARCH_MAY_HAVE_PC_FDC |
065909b9 | 242 | select ISA_DMA_API |
1da177e4 LT |
243 | help |
244 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
245 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
246 | ||
247 | config ARCH_SA1100 | |
248 | bool "SA1100-based" | |
f7e68bbf | 249 | select ISA |
3cd9e19e | 250 | select ARCH_DISCONTIGMEM_ENABLE |
034d2f5a | 251 | select ARCH_MTD_XIP |
f999b8bd MM |
252 | help |
253 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
254 | |
255 | config ARCH_S3C2410 | |
cd701aa2 | 256 | bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442" |
1da177e4 LT |
257 | help |
258 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
259 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 260 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 LT |
261 | |
262 | config ARCH_SHARK | |
263 | bool "Shark" | |
f7e68bbf RK |
264 | select ISA |
265 | select ISA_DMA | |
266 | select PCI | |
f999b8bd MM |
267 | help |
268 | Support for the StrongARM based Digital DNARD machine, also known | |
269 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
270 | |
271 | config ARCH_LH7A40X | |
272 | bool "Sharp LH7A40X" | |
273 | help | |
274 | Say Y here for systems based on one of the Sharp LH7A40X | |
275 | System on a Chip processors. These CPUs include an ARM922T | |
276 | core with a wide array of integrated devices for | |
277 | hand-held and low-power applications. | |
278 | ||
279 | config ARCH_OMAP | |
280 | bool "TI OMAP" | |
f999b8bd MM |
281 | help |
282 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
1da177e4 | 283 | |
1da177e4 LT |
284 | endchoice |
285 | ||
286 | source "arch/arm/mach-clps711x/Kconfig" | |
287 | ||
e7736d47 LB |
288 | source "arch/arm/mach-ep93xx/Kconfig" |
289 | ||
1da177e4 LT |
290 | source "arch/arm/mach-footbridge/Kconfig" |
291 | ||
292 | source "arch/arm/mach-integrator/Kconfig" | |
293 | ||
294 | source "arch/arm/mach-iop3xx/Kconfig" | |
295 | ||
296 | source "arch/arm/mach-ixp4xx/Kconfig" | |
297 | ||
298 | source "arch/arm/mach-ixp2000/Kconfig" | |
299 | ||
c4713074 LB |
300 | source "arch/arm/mach-ixp23xx/Kconfig" |
301 | ||
1da177e4 LT |
302 | source "arch/arm/mach-pxa/Kconfig" |
303 | ||
304 | source "arch/arm/mach-sa1100/Kconfig" | |
305 | ||
d48af15e TL |
306 | source "arch/arm/plat-omap/Kconfig" |
307 | ||
308 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 309 | |
1dbae815 TL |
310 | source "arch/arm/mach-omap2/Kconfig" |
311 | ||
1da177e4 LT |
312 | source "arch/arm/mach-s3c2410/Kconfig" |
313 | ||
314 | source "arch/arm/mach-lh7a40x/Kconfig" | |
315 | ||
316 | source "arch/arm/mach-imx/Kconfig" | |
317 | ||
318 | source "arch/arm/mach-h720x/Kconfig" | |
319 | ||
320 | source "arch/arm/mach-versatile/Kconfig" | |
321 | ||
038c5b60 BN |
322 | source "arch/arm/mach-aaec2000/Kconfig" |
323 | ||
8ad68bbf CM |
324 | source "arch/arm/mach-realview/Kconfig" |
325 | ||
73a59c1c SP |
326 | source "arch/arm/mach-at91rm9200/Kconfig" |
327 | ||
bb6d8c88 SH |
328 | source "arch/arm/mach-netx/Kconfig" |
329 | ||
1da177e4 LT |
330 | # Definitions to make life easier |
331 | config ARCH_ACORN | |
332 | bool | |
333 | ||
334 | source arch/arm/mm/Kconfig | |
335 | ||
336 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER | |
337 | config XSCALE_PMU | |
338 | bool | |
339 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
340 | default y | |
341 | ||
342 | endmenu | |
343 | ||
344 | source "arch/arm/common/Kconfig" | |
345 | ||
346 | config FORCE_MAX_ZONEORDER | |
347 | int | |
348 | depends on SA1111 | |
349 | default "9" | |
350 | ||
351 | menu "Bus support" | |
352 | ||
353 | config ARM_AMBA | |
354 | bool | |
355 | ||
356 | config ISA | |
357 | bool | |
1da177e4 LT |
358 | help |
359 | Find out whether you have ISA slots on your motherboard. ISA is the | |
360 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
361 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
362 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
363 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
364 | ||
065909b9 | 365 | # Select ISA DMA controller support |
1da177e4 LT |
366 | config ISA_DMA |
367 | bool | |
065909b9 | 368 | select ISA_DMA_API |
1da177e4 | 369 | |
065909b9 | 370 | # Select ISA DMA interface |
5cae841b AV |
371 | config ISA_DMA_API |
372 | bool | |
5cae841b | 373 | |
1da177e4 | 374 | config PCI |
68939121 | 375 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX |
1da177e4 LT |
376 | help |
377 | Find out whether you have a PCI motherboard. PCI is the name of a | |
378 | bus system, i.e. the way the CPU talks to the other stuff inside | |
379 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
380 | VESA. If you have PCI, say Y, otherwise N. | |
381 | ||
382 | The PCI-HOWTO, available from | |
383 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
384 | information about which PCI hardware does work under Linux and which | |
385 | doesn't. | |
386 | ||
387 | # Select the host bridge type | |
388 | config PCI_HOST_VIA82C505 | |
389 | bool | |
390 | depends on PCI && ARCH_SHARK | |
391 | default y | |
392 | ||
393 | source "drivers/pci/Kconfig" | |
394 | ||
395 | source "drivers/pcmcia/Kconfig" | |
396 | ||
397 | endmenu | |
398 | ||
399 | menu "Kernel Features" | |
400 | ||
401 | config SMP | |
402 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f6db449c | 403 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
1da177e4 LT |
404 | help |
405 | This enables support for systems with more than one CPU. If you have | |
406 | a system with only one CPU, like most personal computers, say N. If | |
407 | you have a system with more than one CPU, say Y. | |
408 | ||
409 | If you say N here, the kernel will run on single and multiprocessor | |
410 | machines, but will use only one CPU of a multiprocessor machine. If | |
411 | you say Y here, the kernel will run on many, but not all, single | |
412 | processor machines. On a single processor machine, the kernel will | |
413 | run faster if you say N here. | |
414 | ||
12c62c2e AO |
415 | See also the <file:Documentation/smp.txt>, |
416 | <file:Documentation/i386/IO-APIC.txt>, | |
1da177e4 LT |
417 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
418 | <http://www.linuxdoc.org/docs.html#howto>. | |
419 | ||
420 | If you don't know what to do here, say N. | |
421 | ||
422 | config NR_CPUS | |
423 | int "Maximum number of CPUs (2-32)" | |
424 | range 2 32 | |
425 | depends on SMP | |
426 | default "4" | |
427 | ||
a054a811 RK |
428 | config HOTPLUG_CPU |
429 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
430 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
431 | help | |
432 | Say Y here to experiment with turning CPUs off and on. CPUs | |
433 | can be controlled through /sys/devices/system/cpu. | |
434 | ||
37ee16ae RK |
435 | config LOCAL_TIMERS |
436 | bool "Use local timer interrupts" | |
2a98beb6 | 437 | depends on SMP && REALVIEW_MPCORE |
37ee16ae RK |
438 | default y |
439 | help | |
440 | Enable support for local timers on SMP platforms, rather then the | |
441 | legacy IPI broadcast method. Local timers allows the system | |
442 | accounting to be spread across the timer interval, preventing a | |
443 | "thundering herd" at every timer tick. | |
444 | ||
1da177e4 LT |
445 | config PREEMPT |
446 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
447 | depends on EXPERIMENTAL | |
448 | help | |
449 | This option reduces the latency of the kernel when reacting to | |
450 | real-time or interactive events by allowing a low priority process to | |
451 | be preempted even if it is in kernel mode executing a system call. | |
452 | This allows applications to run more reliably even when the system is | |
453 | under load. | |
454 | ||
455 | Say Y here if you are building a kernel for a desktop, embedded | |
456 | or real-time system. Say N if you are unsure. | |
457 | ||
8749af68 RK |
458 | config NO_IDLE_HZ |
459 | bool "Dynamic tick timer" | |
460 | help | |
461 | Select this option if you want to disable continuous timer ticks | |
462 | and have them programmed to occur as required. This option saves | |
463 | power as the system can remain in idle state for longer. | |
464 | ||
465 | By default dynamic tick is disabled during the boot, and can be | |
466 | manually enabled with: | |
467 | ||
468 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick | |
469 | ||
470 | Alternatively, if you want dynamic tick automatically enabled | |
471 | during boot, pass "dyntick=enable" via the kernel command string. | |
472 | ||
f2be64b3 TL |
473 | Please note that dynamic tick may affect the accuracy of |
474 | timekeeping on some platforms depending on the implementation. | |
569d2c34 NP |
475 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
476 | to have accurate timekeeping with dynamic tick. | |
f2be64b3 | 477 | |
f8065813 RK |
478 | config HZ |
479 | int | |
480 | default 128 if ARCH_L7200 | |
481 | default 200 if ARCH_EBSA110 || ARCH_S3C2410 | |
bfe65704 | 482 | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER |
f8065813 RK |
483 | default 100 |
484 | ||
704bdda0 NP |
485 | config AEABI |
486 | bool "Use the ARM EABI to compile the kernel" | |
487 | help | |
488 | This option allows for the kernel to be compiled using the latest | |
489 | ARM ABI (aka EABI). This is only useful if you are using a user | |
490 | space environment that is also compiled with EABI. | |
491 | ||
492 | Since there are major incompatibilities between the legacy ABI and | |
493 | EABI, especially with regard to structure member alignment, this | |
494 | option also changes the kernel syscall calling convention to | |
495 | disambiguate both ABIs and allow for backward compatibility support | |
496 | (selected with CONFIG_OABI_COMPAT). | |
497 | ||
498 | To use this you need GCC version 4.0.0 or later. | |
499 | ||
6c90c872 | 500 | config OABI_COMPAT |
a73a3ff1 | 501 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
61c484d4 | 502 | depends on AEABI && EXPERIMENTAL |
6c90c872 NP |
503 | default y |
504 | help | |
505 | This option preserves the old syscall interface along with the | |
506 | new (ARM EABI) one. It also provides a compatibility layer to | |
507 | intercept syscalls that have structure arguments which layout | |
508 | in memory differs between the legacy ABI and the new ARM EABI | |
509 | (only for non "thumb" binaries). This option adds a tiny | |
510 | overhead to all syscalls and produces a slightly larger kernel. | |
511 | If you know you'll be using only pure EABI user space then you | |
512 | can say N here. If this option is not selected and you attempt | |
513 | to execute a legacy ABI binary then the result will be | |
514 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
515 | at all). If in doubt say Y. | |
516 | ||
3f22ab27 | 517 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 518 | bool |
f7e68bbf | 519 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
520 | help |
521 | Say Y to support efficient handling of discontiguous physical memory, | |
522 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
523 | or have huge holes in the physical address space for other reasons. | |
524 | See <file:Documentation/vm/numa> for more. | |
525 | ||
c80d79d7 YG |
526 | config NODES_SHIFT |
527 | int | |
528 | default "4" if ARCH_LH7A40X | |
529 | default "2" | |
530 | depends on NEED_MULTIPLE_NODES | |
531 | ||
3f22ab27 DH |
532 | source "mm/Kconfig" |
533 | ||
1da177e4 LT |
534 | config LEDS |
535 | bool "Timer and CPU usage LEDs" | |
536 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
537 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
538 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
539 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c SP |
540 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
541 | ARCH_AT91RM9200 | |
1da177e4 LT |
542 | help |
543 | If you say Y here, the LEDs on your machine will be used | |
544 | to provide useful information about your current system status. | |
545 | ||
546 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
547 | be able to select which LEDs are active using the options below. If | |
548 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
549 | red LED will simply flash regularly to indicate that the system is | |
550 | still functional. It is safe to say Y here if you have a CATS | |
551 | system, but the driver will do nothing. | |
552 | ||
553 | config LEDS_TIMER | |
554 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
555 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
556 | depends on LEDS | |
557 | default y if ARCH_EBSA110 | |
558 | help | |
559 | If you say Y here, one of the system LEDs (the green one on the | |
560 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
561 | will flash regularly to indicate that the system is still | |
562 | operational. This is mainly useful to kernel hackers who are | |
563 | debugging unstable kernels. | |
564 | ||
565 | The LART uses the same LED for both Timer LED and CPU usage LED | |
566 | functions. You may choose to use both, but the Timer LED function | |
567 | will overrule the CPU usage LED. | |
568 | ||
569 | config LEDS_CPU | |
570 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
571 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
572 | depends on LEDS | |
573 | help | |
574 | If you say Y here, the red LED will be used to give a good real | |
575 | time indication of CPU usage, by lighting whenever the idle task | |
576 | is not currently executing. | |
577 | ||
578 | The LART uses the same LED for both Timer LED and CPU usage LED | |
579 | functions. You may choose to use both, but the Timer LED function | |
580 | will overrule the CPU usage LED. | |
581 | ||
582 | config ALIGNMENT_TRAP | |
583 | bool | |
584 | default y if !ARCH_EBSA110 | |
585 | help | |
586 | ARM processors can not fetch/store information which is not | |
587 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an | |
588 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
589 | fetch/store instructions will be emulated in software if you say | |
590 | here, which has a severe performance impact. This is necessary for | |
591 | correct operation of some network protocols. With an IP-only | |
592 | configuration it is safe to say N, otherwise say Y. | |
593 | ||
594 | endmenu | |
595 | ||
596 | menu "Boot options" | |
597 | ||
598 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
599 | # TEXT and BSS so we preserve their values in the config files. | |
600 | config ZBOOT_ROM_TEXT | |
601 | hex "Compressed ROM boot loader base address" | |
602 | default "0" | |
603 | help | |
604 | The physical address at which the ROM-able zImage is to be | |
605 | placed in the target. Platforms which normally make use of | |
606 | ROM-able zImage formats normally set this to a suitable | |
607 | value in their defconfig file. | |
608 | ||
609 | If ZBOOT_ROM is not enabled, this has no effect. | |
610 | ||
611 | config ZBOOT_ROM_BSS | |
612 | hex "Compressed ROM boot loader BSS address" | |
613 | default "0" | |
614 | help | |
615 | The base address of 64KiB of read/write memory in the target | |
616 | for the ROM-able zImage, which must be available while the | |
617 | decompressor is running. Platforms which normally make use of | |
618 | ROM-able zImage formats normally set this to a suitable | |
619 | value in their defconfig file. | |
620 | ||
621 | If ZBOOT_ROM is not enabled, this has no effect. | |
622 | ||
623 | config ZBOOT_ROM | |
624 | bool "Compressed boot loader in ROM/flash" | |
625 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
626 | help | |
627 | Say Y here if you intend to execute your compressed kernel image | |
628 | (zImage) directly from ROM or flash. If unsure, say N. | |
629 | ||
630 | config CMDLINE | |
631 | string "Default kernel command string" | |
632 | default "" | |
633 | help | |
634 | On some architectures (EBSA110 and CATS), there is currently no way | |
635 | for the boot loader to pass arguments to the kernel. For these | |
636 | architectures, you should supply some command-line options at build | |
637 | time by entering them here. As a minimum, you should specify the | |
638 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
639 | ||
640 | config XIP_KERNEL | |
641 | bool "Kernel Execute-In-Place from ROM" | |
642 | depends on !ZBOOT_ROM | |
643 | help | |
644 | Execute-In-Place allows the kernel to run from non-volatile storage | |
645 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
646 | space since the text section of the kernel is not loaded from flash | |
647 | to RAM. Read-write sections, such as the data section and stack, | |
648 | are still copied to RAM. The XIP kernel is not compressed since | |
649 | it has to run directly from flash, so it will take more space to | |
650 | store it. The flash address used to link the kernel object files, | |
651 | and for storing it, is configuration dependent. Therefore, if you | |
652 | say Y here, you must know the proper physical address where to | |
653 | store the kernel image depending on your own flash memory usage. | |
654 | ||
655 | Also note that the make target becomes "make xipImage" rather than | |
656 | "make zImage" or "make Image". The final kernel binary to put in | |
657 | ROM memory will be arch/arm/boot/xipImage. | |
658 | ||
659 | If unsure, say N. | |
660 | ||
661 | config XIP_PHYS_ADDR | |
662 | hex "XIP Kernel Physical Location" | |
663 | depends on XIP_KERNEL | |
664 | default "0x00080000" | |
665 | help | |
666 | This is the physical address in your flash memory the kernel will | |
667 | be linked for and stored to. This address is dependent on your | |
668 | own flash usage. | |
669 | ||
670 | endmenu | |
671 | ||
ec6bced6 | 672 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1) |
1da177e4 LT |
673 | |
674 | menu "CPU Frequency scaling" | |
675 | ||
676 | source "drivers/cpufreq/Kconfig" | |
677 | ||
678 | config CPU_FREQ_SA1100 | |
679 | bool | |
07c6d48f | 680 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
681 | default y |
682 | ||
683 | config CPU_FREQ_SA1110 | |
684 | bool | |
685 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
686 | default y | |
687 | ||
688 | config CPU_FREQ_INTEGRATOR | |
689 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
690 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
691 | default y | |
692 | help | |
693 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
694 | ||
695 | For details, take a look at <file:Documentation/cpu-freq>. | |
696 | ||
697 | If in doubt, say Y. | |
698 | ||
699 | endmenu | |
700 | ||
701 | endif | |
702 | ||
703 | menu "Floating point emulation" | |
704 | ||
705 | comment "At least one emulation must be selected" | |
706 | ||
707 | config FPE_NWFPE | |
708 | bool "NWFPE math emulation" | |
8993a44c | 709 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
710 | ---help--- |
711 | Say Y to include the NWFPE floating point emulator in the kernel. | |
712 | This is necessary to run most binaries. Linux does not currently | |
713 | support floating point hardware so you need to say Y here even if | |
714 | your machine has an FPA or floating point co-processor podule. | |
715 | ||
716 | You may say N here if you are going to load the Acorn FPEmulator | |
717 | early in the bootup. | |
718 | ||
719 | config FPE_NWFPE_XP | |
720 | bool "Support extended precision" | |
bedf142b | 721 | depends on FPE_NWFPE |
1da177e4 LT |
722 | help |
723 | Say Y to include 80-bit support in the kernel floating-point | |
724 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
725 | Note that gcc does not generate 80-bit operations by default, | |
726 | so in most cases this option only enlarges the size of the | |
727 | floating point emulator without any good reason. | |
728 | ||
729 | You almost surely want to say N here. | |
730 | ||
731 | config FPE_FASTFPE | |
732 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 733 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
734 | ---help--- |
735 | Say Y here to include the FAST floating point emulator in the kernel. | |
736 | This is an experimental much faster emulator which now also has full | |
737 | precision for the mantissa. It does not support any exceptions. | |
738 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
739 | ||
740 | It should be sufficient for most programs. It may be not suitable | |
741 | for scientific calculations, but you have to check this for yourself. | |
742 | If you do not feel you need a faster FP emulation you should better | |
743 | choose NWFPE. | |
744 | ||
745 | config VFP | |
746 | bool "VFP-format floating point maths" | |
747 | depends on CPU_V6 || CPU_ARM926T | |
748 | help | |
749 | Say Y to include VFP support code in the kernel. This is needed | |
750 | if your hardware includes a VFP unit. | |
751 | ||
752 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
753 | release notes and additional status information. | |
754 | ||
755 | Say N if your target does not have VFP hardware. | |
756 | ||
757 | endmenu | |
758 | ||
759 | menu "Userspace binary formats" | |
760 | ||
761 | source "fs/Kconfig.binfmt" | |
762 | ||
763 | config ARTHUR | |
764 | tristate "RISC OS personality" | |
704bdda0 | 765 | depends on !AEABI |
1da177e4 LT |
766 | help |
767 | Say Y here to include the kernel code necessary if you want to run | |
768 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
769 | experimental; if this sounds frightening, say N and sleep in peace. | |
770 | You can also say M here to compile this support as a module (which | |
771 | will be called arthur). | |
772 | ||
773 | endmenu | |
774 | ||
775 | menu "Power management options" | |
776 | ||
eceab4ac | 777 | source "kernel/power/Kconfig" |
1da177e4 | 778 | |
1da177e4 LT |
779 | config APM |
780 | tristate "Advanced Power Management Emulation" | |
1da177e4 LT |
781 | ---help--- |
782 | APM is a BIOS specification for saving power using several different | |
783 | techniques. This is mostly useful for battery powered laptops with | |
784 | APM compliant BIOSes. If you say Y here, the system time will be | |
785 | reset after a RESUME operation, the /proc/apm device will provide | |
786 | battery status information, and user-space programs will receive | |
787 | notification of APM "events" (e.g. battery status change). | |
788 | ||
1da177e4 LT |
789 | In order to use APM, you will need supporting software. For location |
790 | and more information, read <file:Documentation/pm.txt> and the | |
791 | Battery Powered Linux mini-HOWTO, available from | |
792 | <http://www.tldp.org/docs.html#howto>. | |
793 | ||
794 | This driver does not spin down disk drives (see the hdparm(8) | |
795 | manpage ("man 8 hdparm") for that), and it doesn't turn off | |
796 | VESA-compliant "green" monitors. | |
797 | ||
1da177e4 LT |
798 | Generally, if you don't have a battery in your machine, there isn't |
799 | much point in using this driver and you should say N. If you get | |
800 | random kernel OOPSes or reboots that don't seem to be related to | |
801 | anything, try disabling/enabling this option (or disabling/enabling | |
802 | APM in your BIOS). | |
803 | ||
1da177e4 LT |
804 | endmenu |
805 | ||
d5950b43 SR |
806 | source "net/Kconfig" |
807 | ||
1da177e4 LT |
808 | menu "Device Drivers" |
809 | ||
810 | source "drivers/base/Kconfig" | |
811 | ||
c35bf4a5 PM |
812 | source "drivers/connector/Kconfig" |
813 | ||
1da177e4 LT |
814 | if ALIGNMENT_TRAP |
815 | source "drivers/mtd/Kconfig" | |
816 | endif | |
817 | ||
818 | source "drivers/parport/Kconfig" | |
819 | ||
820 | source "drivers/pnp/Kconfig" | |
821 | ||
822 | source "drivers/block/Kconfig" | |
823 | ||
824 | source "drivers/acorn/block/Kconfig" | |
825 | ||
bb011b8e DB |
826 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \ |
827 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ | |
c4713074 LB |
828 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \ |
829 | || ARCH_IXP23XX | |
1da177e4 LT |
830 | source "drivers/ide/Kconfig" |
831 | endif | |
832 | ||
833 | source "drivers/scsi/Kconfig" | |
834 | ||
835 | source "drivers/md/Kconfig" | |
836 | ||
837 | source "drivers/message/fusion/Kconfig" | |
838 | ||
839 | source "drivers/ieee1394/Kconfig" | |
840 | ||
841 | source "drivers/message/i2o/Kconfig" | |
842 | ||
d5950b43 | 843 | source "drivers/net/Kconfig" |
1da177e4 LT |
844 | |
845 | source "drivers/isdn/Kconfig" | |
846 | ||
847 | # input before char - char/joystick depends on it. As does USB. | |
848 | ||
849 | source "drivers/input/Kconfig" | |
850 | ||
851 | source "drivers/char/Kconfig" | |
852 | ||
853 | source "drivers/i2c/Kconfig" | |
854 | ||
8ae12a0d DB |
855 | source "drivers/spi/Kconfig" |
856 | ||
04916c0e AZ |
857 | source "drivers/w1/Kconfig" |
858 | ||
ad2f931d JD |
859 | source "drivers/hwmon/Kconfig" |
860 | ||
1da177e4 LT |
861 | #source "drivers/l3/Kconfig" |
862 | ||
863 | source "drivers/misc/Kconfig" | |
864 | ||
a4e137ab RK |
865 | source "drivers/mfd/Kconfig" |
866 | ||
c72a1d60 RP |
867 | source "drivers/leds/Kconfig" |
868 | ||
1da177e4 LT |
869 | source "drivers/media/Kconfig" |
870 | ||
871 | source "drivers/video/Kconfig" | |
872 | ||
873 | source "sound/Kconfig" | |
874 | ||
875 | source "drivers/usb/Kconfig" | |
876 | ||
877 | source "drivers/mmc/Kconfig" | |
878 | ||
12b824fb AZ |
879 | source "drivers/rtc/Kconfig" |
880 | ||
1da177e4 LT |
881 | endmenu |
882 | ||
883 | source "fs/Kconfig" | |
884 | ||
885 | source "arch/arm/oprofile/Kconfig" | |
886 | ||
887 | source "arch/arm/Kconfig.debug" | |
888 | ||
889 | source "security/Kconfig" | |
890 | ||
891 | source "crypto/Kconfig" | |
892 | ||
893 | source "lib/Kconfig" |