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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 | |
11 | help | |
12 | The ARM series is a line of low-power-consumption RISC chip designs | |
13 | licensed by ARM ltd and targeted at embedded applications and | |
14 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer | |
15 | manufactured, but legacy ARM-based PC hardware remains popular in | |
16 | Europe. There is an ARM Linux project with a web page at | |
17 | <http://www.arm.linux.org.uk/>. | |
18 | ||
19 | config MMU | |
20 | bool | |
21 | default y | |
22 | ||
23 | config EISA | |
24 | bool | |
25 | ---help--- | |
26 | The Extended Industry Standard Architecture (EISA) bus was | |
27 | developed as an open alternative to the IBM MicroChannel bus. | |
28 | ||
29 | The EISA bus provided some of the features of the IBM MicroChannel | |
30 | bus while maintaining backward compatibility with cards made for | |
31 | the older ISA bus. The EISA bus saw limited use between 1988 and | |
32 | 1995 when it was made obsolete by the PCI bus. | |
33 | ||
34 | Say Y here if you are building a kernel for an EISA-based machine. | |
35 | ||
36 | Otherwise, say N. | |
37 | ||
38 | config SBUS | |
39 | bool | |
40 | ||
41 | config MCA | |
42 | bool | |
43 | help | |
44 | MicroChannel Architecture is found in some IBM PS/2 machines and | |
45 | laptops. It is a bus system similar to PCI or ISA. See | |
46 | <file:Documentation/mca.txt> (and especially the web page given | |
47 | there) before attempting to build an MCA bus kernel. | |
48 | ||
49 | config UID16 | |
50 | bool | |
51 | default y | |
52 | ||
53 | config RWSEM_GENERIC_SPINLOCK | |
54 | bool | |
55 | default y | |
56 | ||
57 | config RWSEM_XCHGADD_ALGORITHM | |
58 | bool | |
59 | ||
60 | config GENERIC_CALIBRATE_DELAY | |
61 | bool | |
62 | default y | |
63 | ||
64 | config GENERIC_BUST_SPINLOCK | |
65 | bool | |
66 | ||
67 | config GENERIC_ISA_DMA | |
68 | bool | |
69 | ||
70 | config GENERIC_IOMAP | |
71 | bool | |
72 | default y | |
73 | ||
74 | config FIQ | |
75 | bool | |
76 | ||
77 | source "init/Kconfig" | |
78 | ||
79 | menu "System Type" | |
80 | ||
81 | choice | |
82 | prompt "ARM system type" | |
83 | default ARCH_RPC | |
84 | ||
85 | config ARCH_CLPS7500 | |
86 | bool "Cirrus-CL-PS7500FE" | |
87 | select TIMER_ACORN | |
f7e68bbf | 88 | select ISA |
1da177e4 LT |
89 | |
90 | config ARCH_CLPS711X | |
91 | bool "CLPS711x/EP721x-based" | |
92 | ||
93 | config ARCH_CO285 | |
94 | bool "Co-EBSA285" | |
95 | select FOOTBRIDGE | |
96 | select FOOTBRIDGE_ADDIN | |
97 | ||
98 | config ARCH_EBSA110 | |
99 | bool "EBSA-110" | |
f7e68bbf | 100 | select ISA |
1da177e4 LT |
101 | help |
102 | This is an evaluation board for the StrongARM processor available | |
103 | from Digital. It has limited hardware on-board, including an onboard | |
104 | Ethernet interface, two PCMCIA sockets, two serial ports and a | |
105 | parallel port. | |
106 | ||
107 | config ARCH_CAMELOT | |
108 | bool "Epxa10db" | |
109 | help | |
110 | This enables support for Altera's Excalibur XA10 development board. | |
111 | If you would like to build your kernel to run on one of these boards | |
112 | then you must say 'Y' here. Otherwise say 'N' | |
113 | ||
114 | config ARCH_FOOTBRIDGE | |
115 | bool "FootBridge" | |
116 | select FOOTBRIDGE | |
117 | ||
118 | config ARCH_INTEGRATOR | |
119 | bool "Integrator" | |
120 | select ARM_AMBA | |
121 | select ICST525 | |
122 | ||
123 | config ARCH_IOP3XX | |
124 | bool "IOP3xx-based" | |
f7e68bbf | 125 | select PCI |
1da177e4 LT |
126 | |
127 | config ARCH_IXP4XX | |
128 | bool "IXP4xx-based" | |
129 | select DMABOUNCE | |
f7e68bbf | 130 | select PCI |
1da177e4 LT |
131 | |
132 | config ARCH_IXP2000 | |
133 | bool "IXP2400/2800-based" | |
f7e68bbf | 134 | select PCI |
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135 | |
136 | config ARCH_L7200 | |
137 | bool "LinkUp-L7200" | |
138 | select FIQ | |
139 | help | |
140 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
141 | L7200 Software Development Board which uses an ARM720T processor. | |
142 | Information on this board can be obtained at: | |
143 | ||
144 | <http://www.linkupsys.com/> | |
145 | ||
146 | If you have any questions or comments about the Linux kernel port | |
147 | to this board, send e-mail to <sjhill@cotw.com>. | |
148 | ||
149 | config ARCH_PXA | |
150 | bool "PXA2xx-based" | |
151 | ||
152 | config ARCH_RPC | |
153 | bool "RiscPC" | |
154 | select ARCH_ACORN | |
155 | select FIQ | |
156 | select TIMER_ACORN | |
157 | help | |
158 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
159 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
160 | ||
161 | config ARCH_SA1100 | |
162 | bool "SA1100-based" | |
f7e68bbf RK |
163 | select ISA |
164 | select DISCONTIGMEM | |
1da177e4 LT |
165 | |
166 | config ARCH_S3C2410 | |
167 | bool "Samsung S3C2410" | |
168 | help | |
169 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
170 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
171 | the Samsung SMDK2410 development board (and derviatives). | |
172 | ||
173 | config ARCH_SHARK | |
174 | bool "Shark" | |
f7e68bbf RK |
175 | select ISA |
176 | select ISA_DMA | |
177 | select PCI | |
1da177e4 LT |
178 | |
179 | config ARCH_LH7A40X | |
180 | bool "Sharp LH7A40X" | |
181 | help | |
182 | Say Y here for systems based on one of the Sharp LH7A40X | |
183 | System on a Chip processors. These CPUs include an ARM922T | |
184 | core with a wide array of integrated devices for | |
185 | hand-held and low-power applications. | |
186 | ||
187 | config ARCH_OMAP | |
188 | bool "TI OMAP" | |
189 | ||
190 | config ARCH_VERSATILE | |
191 | bool "Versatile" | |
192 | select ARM_AMBA | |
193 | select ICST307 | |
194 | help | |
195 | This enables support for ARM Ltd Versatile board. | |
196 | ||
197 | config ARCH_IMX | |
198 | bool "IMX" | |
199 | ||
200 | config ARCH_H720X | |
201 | bool "Hynix-HMS720x-based" | |
202 | help | |
203 | This enables support for systems based on the Hynix HMS720x | |
204 | ||
205 | endchoice | |
206 | ||
207 | source "arch/arm/mach-clps711x/Kconfig" | |
208 | ||
209 | source "arch/arm/mach-epxa10db/Kconfig" | |
210 | ||
211 | source "arch/arm/mach-footbridge/Kconfig" | |
212 | ||
213 | source "arch/arm/mach-integrator/Kconfig" | |
214 | ||
215 | source "arch/arm/mach-iop3xx/Kconfig" | |
216 | ||
217 | source "arch/arm/mach-ixp4xx/Kconfig" | |
218 | ||
219 | source "arch/arm/mach-ixp2000/Kconfig" | |
220 | ||
221 | source "arch/arm/mach-pxa/Kconfig" | |
222 | ||
223 | source "arch/arm/mach-sa1100/Kconfig" | |
224 | ||
225 | source "arch/arm/mach-omap/Kconfig" | |
226 | ||
227 | source "arch/arm/mach-s3c2410/Kconfig" | |
228 | ||
229 | source "arch/arm/mach-lh7a40x/Kconfig" | |
230 | ||
231 | source "arch/arm/mach-imx/Kconfig" | |
232 | ||
233 | source "arch/arm/mach-h720x/Kconfig" | |
234 | ||
235 | source "arch/arm/mach-versatile/Kconfig" | |
236 | ||
237 | # Definitions to make life easier | |
238 | config ARCH_ACORN | |
239 | bool | |
240 | ||
241 | source arch/arm/mm/Kconfig | |
242 | ||
243 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER | |
244 | config XSCALE_PMU | |
245 | bool | |
246 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
247 | default y | |
248 | ||
249 | endmenu | |
250 | ||
251 | source "arch/arm/common/Kconfig" | |
252 | ||
253 | config FORCE_MAX_ZONEORDER | |
254 | int | |
255 | depends on SA1111 | |
256 | default "9" | |
257 | ||
258 | menu "Bus support" | |
259 | ||
260 | config ARM_AMBA | |
261 | bool | |
262 | ||
263 | config ISA | |
264 | bool | |
1da177e4 LT |
265 | help |
266 | Find out whether you have ISA slots on your motherboard. ISA is the | |
267 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
268 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
269 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
270 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
271 | ||
272 | config ISA_DMA | |
273 | bool | |
1da177e4 | 274 | |
5cae841b AV |
275 | config ISA_DMA_API |
276 | bool | |
277 | default y | |
278 | ||
1da177e4 LT |
279 | config PCI |
280 | bool "PCI support" if ARCH_INTEGRATOR_AP | |
1da177e4 LT |
281 | help |
282 | Find out whether you have a PCI motherboard. PCI is the name of a | |
283 | bus system, i.e. the way the CPU talks to the other stuff inside | |
284 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
285 | VESA. If you have PCI, say Y, otherwise N. | |
286 | ||
287 | The PCI-HOWTO, available from | |
288 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
289 | information about which PCI hardware does work under Linux and which | |
290 | doesn't. | |
291 | ||
292 | # Select the host bridge type | |
293 | config PCI_HOST_VIA82C505 | |
294 | bool | |
295 | depends on PCI && ARCH_SHARK | |
296 | default y | |
297 | ||
298 | source "drivers/pci/Kconfig" | |
299 | ||
300 | source "drivers/pcmcia/Kconfig" | |
301 | ||
302 | endmenu | |
303 | ||
304 | menu "Kernel Features" | |
305 | ||
306 | config SMP | |
307 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f7e68bbf | 308 | depends on EXPERIMENTAL #&& n |
1da177e4 LT |
309 | help |
310 | This enables support for systems with more than one CPU. If you have | |
311 | a system with only one CPU, like most personal computers, say N. If | |
312 | you have a system with more than one CPU, say Y. | |
313 | ||
314 | If you say N here, the kernel will run on single and multiprocessor | |
315 | machines, but will use only one CPU of a multiprocessor machine. If | |
316 | you say Y here, the kernel will run on many, but not all, single | |
317 | processor machines. On a single processor machine, the kernel will | |
318 | run faster if you say N here. | |
319 | ||
320 | See also the <file:Documentation/smp.tex>, | |
321 | <file:Documentation/smp.txt>, <file:Documentation/i386/IO-APIC.txt>, | |
322 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at | |
323 | <http://www.linuxdoc.org/docs.html#howto>. | |
324 | ||
325 | If you don't know what to do here, say N. | |
326 | ||
327 | config NR_CPUS | |
328 | int "Maximum number of CPUs (2-32)" | |
329 | range 2 32 | |
330 | depends on SMP | |
331 | default "4" | |
332 | ||
333 | config PREEMPT | |
334 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
335 | depends on EXPERIMENTAL | |
336 | help | |
337 | This option reduces the latency of the kernel when reacting to | |
338 | real-time or interactive events by allowing a low priority process to | |
339 | be preempted even if it is in kernel mode executing a system call. | |
340 | This allows applications to run more reliably even when the system is | |
341 | under load. | |
342 | ||
343 | Say Y here if you are building a kernel for a desktop, embedded | |
344 | or real-time system. Say N if you are unsure. | |
345 | ||
346 | config DISCONTIGMEM | |
347 | bool | |
f7e68bbf | 348 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
349 | help |
350 | Say Y to support efficient handling of discontiguous physical memory, | |
351 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
352 | or have huge holes in the physical address space for other reasons. | |
353 | See <file:Documentation/vm/numa> for more. | |
354 | ||
355 | config LEDS | |
356 | bool "Timer and CPU usage LEDs" | |
357 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
358 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
359 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
360 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
361 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE | |
362 | help | |
363 | If you say Y here, the LEDs on your machine will be used | |
364 | to provide useful information about your current system status. | |
365 | ||
366 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
367 | be able to select which LEDs are active using the options below. If | |
368 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
369 | red LED will simply flash regularly to indicate that the system is | |
370 | still functional. It is safe to say Y here if you have a CATS | |
371 | system, but the driver will do nothing. | |
372 | ||
373 | config LEDS_TIMER | |
374 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
375 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
376 | depends on LEDS | |
377 | default y if ARCH_EBSA110 | |
378 | help | |
379 | If you say Y here, one of the system LEDs (the green one on the | |
380 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
381 | will flash regularly to indicate that the system is still | |
382 | operational. This is mainly useful to kernel hackers who are | |
383 | debugging unstable kernels. | |
384 | ||
385 | The LART uses the same LED for both Timer LED and CPU usage LED | |
386 | functions. You may choose to use both, but the Timer LED function | |
387 | will overrule the CPU usage LED. | |
388 | ||
389 | config LEDS_CPU | |
390 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
391 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
392 | depends on LEDS | |
393 | help | |
394 | If you say Y here, the red LED will be used to give a good real | |
395 | time indication of CPU usage, by lighting whenever the idle task | |
396 | is not currently executing. | |
397 | ||
398 | The LART uses the same LED for both Timer LED and CPU usage LED | |
399 | functions. You may choose to use both, but the Timer LED function | |
400 | will overrule the CPU usage LED. | |
401 | ||
402 | config ALIGNMENT_TRAP | |
403 | bool | |
404 | default y if !ARCH_EBSA110 | |
405 | help | |
406 | ARM processors can not fetch/store information which is not | |
407 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an | |
408 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
409 | fetch/store instructions will be emulated in software if you say | |
410 | here, which has a severe performance impact. This is necessary for | |
411 | correct operation of some network protocols. With an IP-only | |
412 | configuration it is safe to say N, otherwise say Y. | |
413 | ||
414 | endmenu | |
415 | ||
416 | menu "Boot options" | |
417 | ||
418 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
419 | # TEXT and BSS so we preserve their values in the config files. | |
420 | config ZBOOT_ROM_TEXT | |
421 | hex "Compressed ROM boot loader base address" | |
422 | default "0" | |
423 | help | |
424 | The physical address at which the ROM-able zImage is to be | |
425 | placed in the target. Platforms which normally make use of | |
426 | ROM-able zImage formats normally set this to a suitable | |
427 | value in their defconfig file. | |
428 | ||
429 | If ZBOOT_ROM is not enabled, this has no effect. | |
430 | ||
431 | config ZBOOT_ROM_BSS | |
432 | hex "Compressed ROM boot loader BSS address" | |
433 | default "0" | |
434 | help | |
435 | The base address of 64KiB of read/write memory in the target | |
436 | for the ROM-able zImage, which must be available while the | |
437 | decompressor is running. Platforms which normally make use of | |
438 | ROM-able zImage formats normally set this to a suitable | |
439 | value in their defconfig file. | |
440 | ||
441 | If ZBOOT_ROM is not enabled, this has no effect. | |
442 | ||
443 | config ZBOOT_ROM | |
444 | bool "Compressed boot loader in ROM/flash" | |
445 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
446 | help | |
447 | Say Y here if you intend to execute your compressed kernel image | |
448 | (zImage) directly from ROM or flash. If unsure, say N. | |
449 | ||
450 | config CMDLINE | |
451 | string "Default kernel command string" | |
452 | default "" | |
453 | help | |
454 | On some architectures (EBSA110 and CATS), there is currently no way | |
455 | for the boot loader to pass arguments to the kernel. For these | |
456 | architectures, you should supply some command-line options at build | |
457 | time by entering them here. As a minimum, you should specify the | |
458 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
459 | ||
460 | config XIP_KERNEL | |
461 | bool "Kernel Execute-In-Place from ROM" | |
462 | depends on !ZBOOT_ROM | |
463 | help | |
464 | Execute-In-Place allows the kernel to run from non-volatile storage | |
465 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
466 | space since the text section of the kernel is not loaded from flash | |
467 | to RAM. Read-write sections, such as the data section and stack, | |
468 | are still copied to RAM. The XIP kernel is not compressed since | |
469 | it has to run directly from flash, so it will take more space to | |
470 | store it. The flash address used to link the kernel object files, | |
471 | and for storing it, is configuration dependent. Therefore, if you | |
472 | say Y here, you must know the proper physical address where to | |
473 | store the kernel image depending on your own flash memory usage. | |
474 | ||
475 | Also note that the make target becomes "make xipImage" rather than | |
476 | "make zImage" or "make Image". The final kernel binary to put in | |
477 | ROM memory will be arch/arm/boot/xipImage. | |
478 | ||
479 | If unsure, say N. | |
480 | ||
481 | config XIP_PHYS_ADDR | |
482 | hex "XIP Kernel Physical Location" | |
483 | depends on XIP_KERNEL | |
484 | default "0x00080000" | |
485 | help | |
486 | This is the physical address in your flash memory the kernel will | |
487 | be linked for and stored to. This address is dependent on your | |
488 | own flash usage. | |
489 | ||
490 | endmenu | |
491 | ||
492 | if (ARCH_SA1100 || ARCH_INTEGRATOR) | |
493 | ||
494 | menu "CPU Frequency scaling" | |
495 | ||
496 | source "drivers/cpufreq/Kconfig" | |
497 | ||
498 | config CPU_FREQ_SA1100 | |
499 | bool | |
7aa0b0d5 | 500 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4) |
1da177e4 LT |
501 | default y |
502 | ||
503 | config CPU_FREQ_SA1110 | |
504 | bool | |
505 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
506 | default y | |
507 | ||
508 | config CPU_FREQ_INTEGRATOR | |
509 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
510 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
511 | default y | |
512 | help | |
513 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
514 | ||
515 | For details, take a look at <file:Documentation/cpu-freq>. | |
516 | ||
517 | If in doubt, say Y. | |
518 | ||
519 | endmenu | |
520 | ||
521 | endif | |
522 | ||
523 | menu "Floating point emulation" | |
524 | ||
525 | comment "At least one emulation must be selected" | |
526 | ||
527 | config FPE_NWFPE | |
528 | bool "NWFPE math emulation" | |
529 | ---help--- | |
530 | Say Y to include the NWFPE floating point emulator in the kernel. | |
531 | This is necessary to run most binaries. Linux does not currently | |
532 | support floating point hardware so you need to say Y here even if | |
533 | your machine has an FPA or floating point co-processor podule. | |
534 | ||
535 | You may say N here if you are going to load the Acorn FPEmulator | |
536 | early in the bootup. | |
537 | ||
538 | config FPE_NWFPE_XP | |
539 | bool "Support extended precision" | |
540 | depends on FPE_NWFPE && !CPU_BIG_ENDIAN | |
541 | help | |
542 | Say Y to include 80-bit support in the kernel floating-point | |
543 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
544 | Note that gcc does not generate 80-bit operations by default, | |
545 | so in most cases this option only enlarges the size of the | |
546 | floating point emulator without any good reason. | |
547 | ||
548 | You almost surely want to say N here. | |
549 | ||
550 | config FPE_FASTFPE | |
551 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
552 | depends on !CPU_32v3 && EXPERIMENTAL | |
553 | ---help--- | |
554 | Say Y here to include the FAST floating point emulator in the kernel. | |
555 | This is an experimental much faster emulator which now also has full | |
556 | precision for the mantissa. It does not support any exceptions. | |
557 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
558 | ||
559 | It should be sufficient for most programs. It may be not suitable | |
560 | for scientific calculations, but you have to check this for yourself. | |
561 | If you do not feel you need a faster FP emulation you should better | |
562 | choose NWFPE. | |
563 | ||
564 | config VFP | |
565 | bool "VFP-format floating point maths" | |
566 | depends on CPU_V6 || CPU_ARM926T | |
567 | help | |
568 | Say Y to include VFP support code in the kernel. This is needed | |
569 | if your hardware includes a VFP unit. | |
570 | ||
571 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
572 | release notes and additional status information. | |
573 | ||
574 | Say N if your target does not have VFP hardware. | |
575 | ||
576 | endmenu | |
577 | ||
578 | menu "Userspace binary formats" | |
579 | ||
580 | source "fs/Kconfig.binfmt" | |
581 | ||
582 | config ARTHUR | |
583 | tristate "RISC OS personality" | |
584 | help | |
585 | Say Y here to include the kernel code necessary if you want to run | |
586 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
587 | experimental; if this sounds frightening, say N and sleep in peace. | |
588 | You can also say M here to compile this support as a module (which | |
589 | will be called arthur). | |
590 | ||
591 | endmenu | |
592 | ||
593 | menu "Power management options" | |
594 | ||
595 | config PM | |
596 | bool "Power Management support" | |
597 | ---help--- | |
598 | "Power Management" means that parts of your computer are shut | |
599 | off or put into a power conserving "sleep" mode if they are not | |
600 | being used. There are two competing standards for doing this: APM | |
601 | and ACPI. If you want to use either one, say Y here and then also | |
602 | to the requisite support below. | |
603 | ||
604 | Power Management is most important for battery powered laptop | |
605 | computers; if you have a laptop, check out the Linux Laptop home | |
606 | page on the WWW at <http://www.linux-on-laptops.com/> or | |
607 | Tuxmobil - Linux on Mobile Computers at <http://www.tuxmobil.org/> | |
608 | and the Battery Powered Linux mini-HOWTO, available from | |
609 | <http://www.tldp.org/docs.html#howto>. | |
610 | ||
611 | Note that, even if you say N here, Linux on the x86 architecture | |
612 | will issue the hlt instruction if nothing is to be done, thereby | |
613 | sending the processor to sleep and saving power. | |
614 | ||
615 | config APM | |
616 | tristate "Advanced Power Management Emulation" | |
617 | depends on PM | |
618 | ---help--- | |
619 | APM is a BIOS specification for saving power using several different | |
620 | techniques. This is mostly useful for battery powered laptops with | |
621 | APM compliant BIOSes. If you say Y here, the system time will be | |
622 | reset after a RESUME operation, the /proc/apm device will provide | |
623 | battery status information, and user-space programs will receive | |
624 | notification of APM "events" (e.g. battery status change). | |
625 | ||
626 | If you select "Y" here, you can disable actual use of the APM | |
627 | BIOS by passing the "apm=off" option to the kernel at boot time. | |
628 | ||
629 | Note that the APM support is almost completely disabled for | |
630 | machines with more than one CPU. | |
631 | ||
632 | In order to use APM, you will need supporting software. For location | |
633 | and more information, read <file:Documentation/pm.txt> and the | |
634 | Battery Powered Linux mini-HOWTO, available from | |
635 | <http://www.tldp.org/docs.html#howto>. | |
636 | ||
637 | This driver does not spin down disk drives (see the hdparm(8) | |
638 | manpage ("man 8 hdparm") for that), and it doesn't turn off | |
639 | VESA-compliant "green" monitors. | |
640 | ||
641 | This driver does not support the TI 4000M TravelMate and the ACER | |
642 | 486/DX4/75 because they don't have compliant BIOSes. Many "green" | |
643 | desktop machines also don't have compliant BIOSes, and this driver | |
644 | may cause those machines to panic during the boot phase. | |
645 | ||
646 | Generally, if you don't have a battery in your machine, there isn't | |
647 | much point in using this driver and you should say N. If you get | |
648 | random kernel OOPSes or reboots that don't seem to be related to | |
649 | anything, try disabling/enabling this option (or disabling/enabling | |
650 | APM in your BIOS). | |
651 | ||
652 | Some other things you should try when experiencing seemingly random, | |
653 | "weird" problems: | |
654 | ||
655 | 1) make sure that you have enough swap space and that it is | |
656 | enabled. | |
657 | 2) pass the "no-hlt" option to the kernel | |
658 | 3) switch on floating point emulation in the kernel and pass | |
659 | the "no387" option to the kernel | |
660 | 4) pass the "floppy=nodma" option to the kernel | |
661 | 5) pass the "mem=4M" option to the kernel (thereby disabling | |
662 | all but the first 4 MB of RAM) | |
663 | 6) make sure that the CPU is not over clocked. | |
664 | 7) read the sig11 FAQ at <http://www.bitwizard.nl/sig11/> | |
665 | 8) disable the cache from your BIOS settings | |
666 | 9) install a fan for the video card or exchange video RAM | |
667 | 10) install a better fan for the CPU | |
668 | 11) exchange RAM chips | |
669 | 12) exchange the motherboard. | |
670 | ||
671 | To compile this driver as a module, choose M here: the | |
672 | module will be called apm. | |
673 | ||
674 | endmenu | |
675 | ||
676 | menu "Device Drivers" | |
677 | ||
678 | source "drivers/base/Kconfig" | |
679 | ||
680 | if ALIGNMENT_TRAP | |
681 | source "drivers/mtd/Kconfig" | |
682 | endif | |
683 | ||
684 | source "drivers/parport/Kconfig" | |
685 | ||
686 | source "drivers/pnp/Kconfig" | |
687 | ||
688 | source "drivers/block/Kconfig" | |
689 | ||
690 | source "drivers/acorn/block/Kconfig" | |
691 | ||
692 | if ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE | |
693 | source "drivers/ide/Kconfig" | |
694 | endif | |
695 | ||
696 | source "drivers/scsi/Kconfig" | |
697 | ||
698 | source "drivers/md/Kconfig" | |
699 | ||
700 | source "drivers/message/fusion/Kconfig" | |
701 | ||
702 | source "drivers/ieee1394/Kconfig" | |
703 | ||
704 | source "drivers/message/i2o/Kconfig" | |
705 | ||
706 | source "net/Kconfig" | |
707 | ||
708 | source "drivers/isdn/Kconfig" | |
709 | ||
710 | # input before char - char/joystick depends on it. As does USB. | |
711 | ||
712 | source "drivers/input/Kconfig" | |
713 | ||
714 | source "drivers/char/Kconfig" | |
715 | ||
716 | source "drivers/i2c/Kconfig" | |
717 | ||
718 | #source "drivers/l3/Kconfig" | |
719 | ||
720 | source "drivers/misc/Kconfig" | |
721 | ||
722 | source "drivers/media/Kconfig" | |
723 | ||
724 | source "drivers/video/Kconfig" | |
725 | ||
726 | source "sound/Kconfig" | |
727 | ||
728 | source "drivers/usb/Kconfig" | |
729 | ||
730 | source "drivers/mmc/Kconfig" | |
731 | ||
732 | endmenu | |
733 | ||
734 | source "fs/Kconfig" | |
735 | ||
736 | source "arch/arm/oprofile/Kconfig" | |
737 | ||
738 | source "arch/arm/Kconfig.debug" | |
739 | ||
740 | source "security/Kconfig" | |
741 | ||
742 | source "crypto/Kconfig" | |
743 | ||
744 | source "lib/Kconfig" |