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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 AV |
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 | ||
1da177e4 LT |
80 | source "init/Kconfig" |
81 | ||
82 | menu "System Type" | |
83 | ||
84 | choice | |
85 | prompt "ARM system type" | |
6a0e2430 | 86 | default ARCH_VERSATILE |
1da177e4 LT |
87 | |
88 | config ARCH_CLPS7500 | |
89 | bool "Cirrus-CL-PS7500FE" | |
90 | select TIMER_ACORN | |
f7e68bbf | 91 | select ISA |
f999b8bd MM |
92 | help |
93 | Support for the Cirrus Logic PS7500FE system-on-a-chip. | |
1da177e4 LT |
94 | |
95 | config ARCH_CLPS711X | |
96 | bool "CLPS711x/EP721x-based" | |
f999b8bd MM |
97 | help |
98 | Support for Cirrus Logic 711x/721x based boards. | |
1da177e4 LT |
99 | |
100 | config ARCH_CO285 | |
101 | bool "Co-EBSA285" | |
102 | select FOOTBRIDGE | |
103 | select FOOTBRIDGE_ADDIN | |
f999b8bd MM |
104 | help |
105 | Support for Intel's EBSA285 companion chip. | |
1da177e4 LT |
106 | |
107 | config ARCH_EBSA110 | |
108 | bool "EBSA-110" | |
f7e68bbf | 109 | select ISA |
1da177e4 LT |
110 | help |
111 | This is an evaluation board for the StrongARM processor available | |
f6c8965a | 112 | from Digital. It has limited hardware on-board, including an |
1da177e4 LT |
113 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
114 | parallel port. | |
115 | ||
e7736d47 LB |
116 | config ARCH_EP93XX |
117 | bool "EP93xx-based" | |
118 | select ARM_AMBA | |
119 | select ARM_VIC | |
120 | help | |
121 | This enables support for the Cirrus EP93xx series of CPUs. | |
122 | ||
1da177e4 LT |
123 | config ARCH_FOOTBRIDGE |
124 | bool "FootBridge" | |
125 | select FOOTBRIDGE | |
f999b8bd MM |
126 | help |
127 | Support for systems based on the DC21285 companion chip | |
128 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
1da177e4 LT |
129 | |
130 | config ARCH_INTEGRATOR | |
131 | bool "Integrator" | |
132 | select ARM_AMBA | |
133 | select ICST525 | |
f999b8bd MM |
134 | help |
135 | Support for ARM's Integrator platform. | |
1da177e4 LT |
136 | |
137 | config ARCH_IOP3XX | |
138 | bool "IOP3xx-based" | |
f7e68bbf | 139 | select PCI |
f999b8bd MM |
140 | help |
141 | Support for Intel's IOP3XX (XScale) family of processors. | |
1da177e4 LT |
142 | |
143 | config ARCH_IXP4XX | |
144 | bool "IXP4xx-based" | |
145 | select DMABOUNCE | |
f7e68bbf | 146 | select PCI |
f999b8bd MM |
147 | help |
148 | Support for Intel's IXP4XX (XScale) family of processors. | |
1da177e4 LT |
149 | |
150 | config ARCH_IXP2000 | |
151 | bool "IXP2400/2800-based" | |
f7e68bbf | 152 | select PCI |
f999b8bd MM |
153 | help |
154 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
1da177e4 | 155 | |
c4713074 LB |
156 | config ARCH_IXP23XX |
157 | bool "IXP23XX-based" | |
158 | select PCI | |
159 | help | |
160 | Support for Intel's IXP23xx (XScale) family of processors. | |
161 | ||
1da177e4 LT |
162 | config ARCH_L7200 |
163 | bool "LinkUp-L7200" | |
164 | select FIQ | |
165 | help | |
166 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
167 | L7200 Software Development Board which uses an ARM720T processor. | |
168 | Information on this board can be obtained at: | |
169 | ||
170 | <http://www.linkupsys.com/> | |
171 | ||
172 | If you have any questions or comments about the Linux kernel port | |
173 | to this board, send e-mail to <sjhill@cotw.com>. | |
174 | ||
175 | config ARCH_PXA | |
176 | bool "PXA2xx-based" | |
034d2f5a | 177 | select ARCH_MTD_XIP |
f999b8bd MM |
178 | help |
179 | Support for Intel's PXA2XX processor line. | |
1da177e4 LT |
180 | |
181 | config ARCH_RPC | |
182 | bool "RiscPC" | |
183 | select ARCH_ACORN | |
184 | select FIQ | |
185 | select TIMER_ACORN | |
a08b6b79 | 186 | select ARCH_MAY_HAVE_PC_FDC |
065909b9 | 187 | select ISA_DMA_API |
1da177e4 LT |
188 | help |
189 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
190 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
191 | ||
192 | config ARCH_SA1100 | |
193 | bool "SA1100-based" | |
f7e68bbf | 194 | select ISA |
3cd9e19e | 195 | select ARCH_DISCONTIGMEM_ENABLE |
034d2f5a | 196 | select ARCH_MTD_XIP |
f999b8bd MM |
197 | help |
198 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
199 | |
200 | config ARCH_S3C2410 | |
201 | bool "Samsung S3C2410" | |
202 | help | |
203 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
204 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 205 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 LT |
206 | |
207 | config ARCH_SHARK | |
208 | bool "Shark" | |
f7e68bbf RK |
209 | select ISA |
210 | select ISA_DMA | |
211 | select PCI | |
f999b8bd MM |
212 | help |
213 | Support for the StrongARM based Digital DNARD machine, also known | |
214 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
215 | |
216 | config ARCH_LH7A40X | |
217 | bool "Sharp LH7A40X" | |
218 | help | |
219 | Say Y here for systems based on one of the Sharp LH7A40X | |
220 | System on a Chip processors. These CPUs include an ARM922T | |
221 | core with a wide array of integrated devices for | |
222 | hand-held and low-power applications. | |
223 | ||
224 | config ARCH_OMAP | |
225 | bool "TI OMAP" | |
f999b8bd MM |
226 | help |
227 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
1da177e4 LT |
228 | |
229 | config ARCH_VERSATILE | |
230 | bool "Versatile" | |
231 | select ARM_AMBA | |
fa0fe48f | 232 | select ARM_VIC |
1da177e4 LT |
233 | select ICST307 |
234 | help | |
235 | This enables support for ARM Ltd Versatile board. | |
236 | ||
8ad68bbf CM |
237 | config ARCH_REALVIEW |
238 | bool "RealView" | |
239 | select ARM_AMBA | |
240 | select ICST307 | |
241 | help | |
242 | This enables support for ARM Ltd RealView boards. | |
243 | ||
1da177e4 LT |
244 | config ARCH_IMX |
245 | bool "IMX" | |
f999b8bd MM |
246 | help |
247 | Support for Motorola's i.MX family of processors (MX1, MXL). | |
1da177e4 LT |
248 | |
249 | config ARCH_H720X | |
250 | bool "Hynix-HMS720x-based" | |
065909b9 | 251 | select ISA_DMA_API |
1da177e4 LT |
252 | help |
253 | This enables support for systems based on the Hynix HMS720x | |
254 | ||
038c5b60 BN |
255 | config ARCH_AAEC2000 |
256 | bool "Agilent AAEC-2000 based" | |
049eb329 | 257 | select ARM_AMBA |
038c5b60 BN |
258 | help |
259 | This enables support for systems based on the Agilent AAEC-2000 | |
260 | ||
73a59c1c SP |
261 | config ARCH_AT91RM9200 |
262 | bool "AT91RM9200" | |
263 | help | |
f999b8bd MM |
264 | Say Y here if you intend to run this kernel on an Atmel |
265 | AT91RM9200-based board. | |
73a59c1c | 266 | |
1da177e4 LT |
267 | endchoice |
268 | ||
269 | source "arch/arm/mach-clps711x/Kconfig" | |
270 | ||
e7736d47 LB |
271 | source "arch/arm/mach-ep93xx/Kconfig" |
272 | ||
1da177e4 LT |
273 | source "arch/arm/mach-footbridge/Kconfig" |
274 | ||
275 | source "arch/arm/mach-integrator/Kconfig" | |
276 | ||
277 | source "arch/arm/mach-iop3xx/Kconfig" | |
278 | ||
279 | source "arch/arm/mach-ixp4xx/Kconfig" | |
280 | ||
281 | source "arch/arm/mach-ixp2000/Kconfig" | |
282 | ||
c4713074 LB |
283 | source "arch/arm/mach-ixp23xx/Kconfig" |
284 | ||
1da177e4 LT |
285 | source "arch/arm/mach-pxa/Kconfig" |
286 | ||
287 | source "arch/arm/mach-sa1100/Kconfig" | |
288 | ||
d48af15e TL |
289 | source "arch/arm/plat-omap/Kconfig" |
290 | ||
291 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 292 | |
1dbae815 TL |
293 | source "arch/arm/mach-omap2/Kconfig" |
294 | ||
1da177e4 LT |
295 | source "arch/arm/mach-s3c2410/Kconfig" |
296 | ||
297 | source "arch/arm/mach-lh7a40x/Kconfig" | |
298 | ||
299 | source "arch/arm/mach-imx/Kconfig" | |
300 | ||
301 | source "arch/arm/mach-h720x/Kconfig" | |
302 | ||
303 | source "arch/arm/mach-versatile/Kconfig" | |
304 | ||
038c5b60 BN |
305 | source "arch/arm/mach-aaec2000/Kconfig" |
306 | ||
8ad68bbf CM |
307 | source "arch/arm/mach-realview/Kconfig" |
308 | ||
73a59c1c SP |
309 | source "arch/arm/mach-at91rm9200/Kconfig" |
310 | ||
1da177e4 LT |
311 | # Definitions to make life easier |
312 | config ARCH_ACORN | |
313 | bool | |
314 | ||
315 | source arch/arm/mm/Kconfig | |
316 | ||
317 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER | |
318 | config XSCALE_PMU | |
319 | bool | |
320 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
321 | default y | |
322 | ||
323 | endmenu | |
324 | ||
325 | source "arch/arm/common/Kconfig" | |
326 | ||
327 | config FORCE_MAX_ZONEORDER | |
328 | int | |
329 | depends on SA1111 | |
330 | default "9" | |
331 | ||
332 | menu "Bus support" | |
333 | ||
334 | config ARM_AMBA | |
335 | bool | |
336 | ||
337 | config ISA | |
338 | bool | |
1da177e4 LT |
339 | help |
340 | Find out whether you have ISA slots on your motherboard. ISA is the | |
341 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
342 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
343 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
344 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
345 | ||
065909b9 | 346 | # Select ISA DMA controller support |
1da177e4 LT |
347 | config ISA_DMA |
348 | bool | |
065909b9 | 349 | select ISA_DMA_API |
1da177e4 | 350 | |
065909b9 | 351 | # Select ISA DMA interface |
5cae841b AV |
352 | config ISA_DMA_API |
353 | bool | |
5cae841b | 354 | |
1da177e4 | 355 | config PCI |
c0da085a | 356 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB |
1da177e4 LT |
357 | help |
358 | Find out whether you have a PCI motherboard. PCI is the name of a | |
359 | bus system, i.e. the way the CPU talks to the other stuff inside | |
360 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
361 | VESA. If you have PCI, say Y, otherwise N. | |
362 | ||
363 | The PCI-HOWTO, available from | |
364 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
365 | information about which PCI hardware does work under Linux and which | |
366 | doesn't. | |
367 | ||
368 | # Select the host bridge type | |
369 | config PCI_HOST_VIA82C505 | |
370 | bool | |
371 | depends on PCI && ARCH_SHARK | |
372 | default y | |
373 | ||
374 | source "drivers/pci/Kconfig" | |
375 | ||
376 | source "drivers/pcmcia/Kconfig" | |
377 | ||
378 | endmenu | |
379 | ||
380 | menu "Kernel Features" | |
381 | ||
382 | config SMP | |
383 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f6db449c | 384 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
1da177e4 LT |
385 | help |
386 | This enables support for systems with more than one CPU. If you have | |
387 | a system with only one CPU, like most personal computers, say N. If | |
388 | you have a system with more than one CPU, say Y. | |
389 | ||
390 | If you say N here, the kernel will run on single and multiprocessor | |
391 | machines, but will use only one CPU of a multiprocessor machine. If | |
392 | you say Y here, the kernel will run on many, but not all, single | |
393 | processor machines. On a single processor machine, the kernel will | |
394 | run faster if you say N here. | |
395 | ||
12c62c2e AO |
396 | See also the <file:Documentation/smp.txt>, |
397 | <file:Documentation/i386/IO-APIC.txt>, | |
1da177e4 LT |
398 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
399 | <http://www.linuxdoc.org/docs.html#howto>. | |
400 | ||
401 | If you don't know what to do here, say N. | |
402 | ||
403 | config NR_CPUS | |
404 | int "Maximum number of CPUs (2-32)" | |
405 | range 2 32 | |
406 | depends on SMP | |
407 | default "4" | |
408 | ||
a054a811 RK |
409 | config HOTPLUG_CPU |
410 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
411 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
412 | help | |
413 | Say Y here to experiment with turning CPUs off and on. CPUs | |
414 | can be controlled through /sys/devices/system/cpu. | |
415 | ||
37ee16ae RK |
416 | config LOCAL_TIMERS |
417 | bool "Use local timer interrupts" | |
2a98beb6 | 418 | depends on SMP && REALVIEW_MPCORE |
37ee16ae RK |
419 | default y |
420 | help | |
421 | Enable support for local timers on SMP platforms, rather then the | |
422 | legacy IPI broadcast method. Local timers allows the system | |
423 | accounting to be spread across the timer interval, preventing a | |
424 | "thundering herd" at every timer tick. | |
425 | ||
1da177e4 LT |
426 | config PREEMPT |
427 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
428 | depends on EXPERIMENTAL | |
429 | help | |
430 | This option reduces the latency of the kernel when reacting to | |
431 | real-time or interactive events by allowing a low priority process to | |
432 | be preempted even if it is in kernel mode executing a system call. | |
433 | This allows applications to run more reliably even when the system is | |
434 | under load. | |
435 | ||
436 | Say Y here if you are building a kernel for a desktop, embedded | |
437 | or real-time system. Say N if you are unsure. | |
438 | ||
8749af68 RK |
439 | config NO_IDLE_HZ |
440 | bool "Dynamic tick timer" | |
441 | help | |
442 | Select this option if you want to disable continuous timer ticks | |
443 | and have them programmed to occur as required. This option saves | |
444 | power as the system can remain in idle state for longer. | |
445 | ||
446 | By default dynamic tick is disabled during the boot, and can be | |
447 | manually enabled with: | |
448 | ||
449 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick | |
450 | ||
451 | Alternatively, if you want dynamic tick automatically enabled | |
452 | during boot, pass "dyntick=enable" via the kernel command string. | |
453 | ||
f2be64b3 TL |
454 | Please note that dynamic tick may affect the accuracy of |
455 | timekeeping on some platforms depending on the implementation. | |
569d2c34 NP |
456 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
457 | to have accurate timekeeping with dynamic tick. | |
f2be64b3 | 458 | |
f8065813 RK |
459 | config HZ |
460 | int | |
461 | default 128 if ARCH_L7200 | |
462 | default 200 if ARCH_EBSA110 || ARCH_S3C2410 | |
bfe65704 | 463 | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER |
f8065813 RK |
464 | default 100 |
465 | ||
704bdda0 NP |
466 | config AEABI |
467 | bool "Use the ARM EABI to compile the kernel" | |
468 | help | |
469 | This option allows for the kernel to be compiled using the latest | |
470 | ARM ABI (aka EABI). This is only useful if you are using a user | |
471 | space environment that is also compiled with EABI. | |
472 | ||
473 | Since there are major incompatibilities between the legacy ABI and | |
474 | EABI, especially with regard to structure member alignment, this | |
475 | option also changes the kernel syscall calling convention to | |
476 | disambiguate both ABIs and allow for backward compatibility support | |
477 | (selected with CONFIG_OABI_COMPAT). | |
478 | ||
479 | To use this you need GCC version 4.0.0 or later. | |
480 | ||
6c90c872 | 481 | config OABI_COMPAT |
a73a3ff1 | 482 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
61c484d4 | 483 | depends on AEABI && EXPERIMENTAL |
6c90c872 NP |
484 | default y |
485 | help | |
486 | This option preserves the old syscall interface along with the | |
487 | new (ARM EABI) one. It also provides a compatibility layer to | |
488 | intercept syscalls that have structure arguments which layout | |
489 | in memory differs between the legacy ABI and the new ARM EABI | |
490 | (only for non "thumb" binaries). This option adds a tiny | |
491 | overhead to all syscalls and produces a slightly larger kernel. | |
492 | If you know you'll be using only pure EABI user space then you | |
493 | can say N here. If this option is not selected and you attempt | |
494 | to execute a legacy ABI binary then the result will be | |
495 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
496 | at all). If in doubt say Y. | |
497 | ||
3f22ab27 | 498 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 499 | bool |
f7e68bbf | 500 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
501 | help |
502 | Say Y to support efficient handling of discontiguous physical memory, | |
503 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
504 | or have huge holes in the physical address space for other reasons. | |
505 | See <file:Documentation/vm/numa> for more. | |
506 | ||
3f22ab27 DH |
507 | source "mm/Kconfig" |
508 | ||
1da177e4 LT |
509 | config LEDS |
510 | bool "Timer and CPU usage LEDs" | |
511 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
512 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
513 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
514 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c SP |
515 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
516 | ARCH_AT91RM9200 | |
1da177e4 LT |
517 | help |
518 | If you say Y here, the LEDs on your machine will be used | |
519 | to provide useful information about your current system status. | |
520 | ||
521 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
522 | be able to select which LEDs are active using the options below. If | |
523 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
524 | red LED will simply flash regularly to indicate that the system is | |
525 | still functional. It is safe to say Y here if you have a CATS | |
526 | system, but the driver will do nothing. | |
527 | ||
528 | config LEDS_TIMER | |
529 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
530 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
531 | depends on LEDS | |
532 | default y if ARCH_EBSA110 | |
533 | help | |
534 | If you say Y here, one of the system LEDs (the green one on the | |
535 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
536 | will flash regularly to indicate that the system is still | |
537 | operational. This is mainly useful to kernel hackers who are | |
538 | debugging unstable kernels. | |
539 | ||
540 | The LART uses the same LED for both Timer LED and CPU usage LED | |
541 | functions. You may choose to use both, but the Timer LED function | |
542 | will overrule the CPU usage LED. | |
543 | ||
544 | config LEDS_CPU | |
545 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
546 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
547 | depends on LEDS | |
548 | help | |
549 | If you say Y here, the red LED will be used to give a good real | |
550 | time indication of CPU usage, by lighting whenever the idle task | |
551 | is not currently executing. | |
552 | ||
553 | The LART uses the same LED for both Timer LED and CPU usage LED | |
554 | functions. You may choose to use both, but the Timer LED function | |
555 | will overrule the CPU usage LED. | |
556 | ||
557 | config ALIGNMENT_TRAP | |
558 | bool | |
559 | default y if !ARCH_EBSA110 | |
560 | help | |
561 | ARM processors can not fetch/store information which is not | |
562 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an | |
563 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
564 | fetch/store instructions will be emulated in software if you say | |
565 | here, which has a severe performance impact. This is necessary for | |
566 | correct operation of some network protocols. With an IP-only | |
567 | configuration it is safe to say N, otherwise say Y. | |
568 | ||
569 | endmenu | |
570 | ||
571 | menu "Boot options" | |
572 | ||
573 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
574 | # TEXT and BSS so we preserve their values in the config files. | |
575 | config ZBOOT_ROM_TEXT | |
576 | hex "Compressed ROM boot loader base address" | |
577 | default "0" | |
578 | help | |
579 | The physical address at which the ROM-able zImage is to be | |
580 | placed in the target. Platforms which normally make use of | |
581 | ROM-able zImage formats normally set this to a suitable | |
582 | value in their defconfig file. | |
583 | ||
584 | If ZBOOT_ROM is not enabled, this has no effect. | |
585 | ||
586 | config ZBOOT_ROM_BSS | |
587 | hex "Compressed ROM boot loader BSS address" | |
588 | default "0" | |
589 | help | |
590 | The base address of 64KiB of read/write memory in the target | |
591 | for the ROM-able zImage, which must be available while the | |
592 | decompressor is running. Platforms which normally make use of | |
593 | ROM-able zImage formats normally set this to a suitable | |
594 | value in their defconfig file. | |
595 | ||
596 | If ZBOOT_ROM is not enabled, this has no effect. | |
597 | ||
598 | config ZBOOT_ROM | |
599 | bool "Compressed boot loader in ROM/flash" | |
600 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
601 | help | |
602 | Say Y here if you intend to execute your compressed kernel image | |
603 | (zImage) directly from ROM or flash. If unsure, say N. | |
604 | ||
605 | config CMDLINE | |
606 | string "Default kernel command string" | |
607 | default "" | |
608 | help | |
609 | On some architectures (EBSA110 and CATS), there is currently no way | |
610 | for the boot loader to pass arguments to the kernel. For these | |
611 | architectures, you should supply some command-line options at build | |
612 | time by entering them here. As a minimum, you should specify the | |
613 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
614 | ||
615 | config XIP_KERNEL | |
616 | bool "Kernel Execute-In-Place from ROM" | |
617 | depends on !ZBOOT_ROM | |
618 | help | |
619 | Execute-In-Place allows the kernel to run from non-volatile storage | |
620 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
621 | space since the text section of the kernel is not loaded from flash | |
622 | to RAM. Read-write sections, such as the data section and stack, | |
623 | are still copied to RAM. The XIP kernel is not compressed since | |
624 | it has to run directly from flash, so it will take more space to | |
625 | store it. The flash address used to link the kernel object files, | |
626 | and for storing it, is configuration dependent. Therefore, if you | |
627 | say Y here, you must know the proper physical address where to | |
628 | store the kernel image depending on your own flash memory usage. | |
629 | ||
630 | Also note that the make target becomes "make xipImage" rather than | |
631 | "make zImage" or "make Image". The final kernel binary to put in | |
632 | ROM memory will be arch/arm/boot/xipImage. | |
633 | ||
634 | If unsure, say N. | |
635 | ||
636 | config XIP_PHYS_ADDR | |
637 | hex "XIP Kernel Physical Location" | |
638 | depends on XIP_KERNEL | |
639 | default "0x00080000" | |
640 | help | |
641 | This is the physical address in your flash memory the kernel will | |
642 | be linked for and stored to. This address is dependent on your | |
643 | own flash usage. | |
644 | ||
645 | endmenu | |
646 | ||
ec6bced6 | 647 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1) |
1da177e4 LT |
648 | |
649 | menu "CPU Frequency scaling" | |
650 | ||
651 | source "drivers/cpufreq/Kconfig" | |
652 | ||
653 | config CPU_FREQ_SA1100 | |
654 | bool | |
07c6d48f | 655 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
656 | default y |
657 | ||
658 | config CPU_FREQ_SA1110 | |
659 | bool | |
660 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
661 | default y | |
662 | ||
663 | config CPU_FREQ_INTEGRATOR | |
664 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
665 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
666 | default y | |
667 | help | |
668 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
669 | ||
670 | For details, take a look at <file:Documentation/cpu-freq>. | |
671 | ||
672 | If in doubt, say Y. | |
673 | ||
674 | endmenu | |
675 | ||
676 | endif | |
677 | ||
678 | menu "Floating point emulation" | |
679 | ||
680 | comment "At least one emulation must be selected" | |
681 | ||
682 | config FPE_NWFPE | |
683 | bool "NWFPE math emulation" | |
8993a44c | 684 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
685 | ---help--- |
686 | Say Y to include the NWFPE floating point emulator in the kernel. | |
687 | This is necessary to run most binaries. Linux does not currently | |
688 | support floating point hardware so you need to say Y here even if | |
689 | your machine has an FPA or floating point co-processor podule. | |
690 | ||
691 | You may say N here if you are going to load the Acorn FPEmulator | |
692 | early in the bootup. | |
693 | ||
694 | config FPE_NWFPE_XP | |
695 | bool "Support extended precision" | |
bedf142b | 696 | depends on FPE_NWFPE |
1da177e4 LT |
697 | help |
698 | Say Y to include 80-bit support in the kernel floating-point | |
699 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
700 | Note that gcc does not generate 80-bit operations by default, | |
701 | so in most cases this option only enlarges the size of the | |
702 | floating point emulator without any good reason. | |
703 | ||
704 | You almost surely want to say N here. | |
705 | ||
706 | config FPE_FASTFPE | |
707 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 708 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
709 | ---help--- |
710 | Say Y here to include the FAST floating point emulator in the kernel. | |
711 | This is an experimental much faster emulator which now also has full | |
712 | precision for the mantissa. It does not support any exceptions. | |
713 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
714 | ||
715 | It should be sufficient for most programs. It may be not suitable | |
716 | for scientific calculations, but you have to check this for yourself. | |
717 | If you do not feel you need a faster FP emulation you should better | |
718 | choose NWFPE. | |
719 | ||
720 | config VFP | |
721 | bool "VFP-format floating point maths" | |
722 | depends on CPU_V6 || CPU_ARM926T | |
723 | help | |
724 | Say Y to include VFP support code in the kernel. This is needed | |
725 | if your hardware includes a VFP unit. | |
726 | ||
727 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
728 | release notes and additional status information. | |
729 | ||
730 | Say N if your target does not have VFP hardware. | |
731 | ||
732 | endmenu | |
733 | ||
734 | menu "Userspace binary formats" | |
735 | ||
736 | source "fs/Kconfig.binfmt" | |
737 | ||
738 | config ARTHUR | |
739 | tristate "RISC OS personality" | |
704bdda0 | 740 | depends on !AEABI |
1da177e4 LT |
741 | help |
742 | Say Y here to include the kernel code necessary if you want to run | |
743 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
744 | experimental; if this sounds frightening, say N and sleep in peace. | |
745 | You can also say M here to compile this support as a module (which | |
746 | will be called arthur). | |
747 | ||
748 | endmenu | |
749 | ||
750 | menu "Power management options" | |
751 | ||
eceab4ac | 752 | source "kernel/power/Kconfig" |
1da177e4 | 753 | |
1da177e4 LT |
754 | config APM |
755 | tristate "Advanced Power Management Emulation" | |
1da177e4 LT |
756 | ---help--- |
757 | APM is a BIOS specification for saving power using several different | |
758 | techniques. This is mostly useful for battery powered laptops with | |
759 | APM compliant BIOSes. If you say Y here, the system time will be | |
760 | reset after a RESUME operation, the /proc/apm device will provide | |
761 | battery status information, and user-space programs will receive | |
762 | notification of APM "events" (e.g. battery status change). | |
763 | ||
1da177e4 LT |
764 | In order to use APM, you will need supporting software. For location |
765 | and more information, read <file:Documentation/pm.txt> and the | |
766 | Battery Powered Linux mini-HOWTO, available from | |
767 | <http://www.tldp.org/docs.html#howto>. | |
768 | ||
769 | This driver does not spin down disk drives (see the hdparm(8) | |
770 | manpage ("man 8 hdparm") for that), and it doesn't turn off | |
771 | VESA-compliant "green" monitors. | |
772 | ||
1da177e4 LT |
773 | Generally, if you don't have a battery in your machine, there isn't |
774 | much point in using this driver and you should say N. If you get | |
775 | random kernel OOPSes or reboots that don't seem to be related to | |
776 | anything, try disabling/enabling this option (or disabling/enabling | |
777 | APM in your BIOS). | |
778 | ||
1da177e4 LT |
779 | endmenu |
780 | ||
d5950b43 SR |
781 | source "net/Kconfig" |
782 | ||
1da177e4 LT |
783 | menu "Device Drivers" |
784 | ||
785 | source "drivers/base/Kconfig" | |
786 | ||
c35bf4a5 PM |
787 | source "drivers/connector/Kconfig" |
788 | ||
1da177e4 LT |
789 | if ALIGNMENT_TRAP |
790 | source "drivers/mtd/Kconfig" | |
791 | endif | |
792 | ||
793 | source "drivers/parport/Kconfig" | |
794 | ||
795 | source "drivers/pnp/Kconfig" | |
796 | ||
797 | source "drivers/block/Kconfig" | |
798 | ||
799 | source "drivers/acorn/block/Kconfig" | |
800 | ||
bb011b8e DB |
801 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \ |
802 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ | |
c4713074 LB |
803 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \ |
804 | || ARCH_IXP23XX | |
1da177e4 LT |
805 | source "drivers/ide/Kconfig" |
806 | endif | |
807 | ||
808 | source "drivers/scsi/Kconfig" | |
809 | ||
810 | source "drivers/md/Kconfig" | |
811 | ||
812 | source "drivers/message/fusion/Kconfig" | |
813 | ||
814 | source "drivers/ieee1394/Kconfig" | |
815 | ||
816 | source "drivers/message/i2o/Kconfig" | |
817 | ||
d5950b43 | 818 | source "drivers/net/Kconfig" |
1da177e4 LT |
819 | |
820 | source "drivers/isdn/Kconfig" | |
821 | ||
822 | # input before char - char/joystick depends on it. As does USB. | |
823 | ||
824 | source "drivers/input/Kconfig" | |
825 | ||
826 | source "drivers/char/Kconfig" | |
827 | ||
828 | source "drivers/i2c/Kconfig" | |
829 | ||
8ae12a0d DB |
830 | source "drivers/spi/Kconfig" |
831 | ||
04916c0e AZ |
832 | source "drivers/w1/Kconfig" |
833 | ||
ad2f931d JD |
834 | source "drivers/hwmon/Kconfig" |
835 | ||
1da177e4 LT |
836 | #source "drivers/l3/Kconfig" |
837 | ||
838 | source "drivers/misc/Kconfig" | |
839 | ||
a4e137ab RK |
840 | source "drivers/mfd/Kconfig" |
841 | ||
1da177e4 LT |
842 | source "drivers/media/Kconfig" |
843 | ||
844 | source "drivers/video/Kconfig" | |
845 | ||
846 | source "sound/Kconfig" | |
847 | ||
848 | source "drivers/usb/Kconfig" | |
849 | ||
850 | source "drivers/mmc/Kconfig" | |
851 | ||
12b824fb AZ |
852 | source "drivers/rtc/Kconfig" |
853 | ||
1da177e4 LT |
854 | endmenu |
855 | ||
856 | source "fs/Kconfig" | |
857 | ||
858 | source "arch/arm/oprofile/Kconfig" | |
859 | ||
860 | source "arch/arm/Kconfig.debug" | |
861 | ||
862 | source "security/Kconfig" | |
863 | ||
864 | source "crypto/Kconfig" | |
865 | ||
866 | source "lib/Kconfig" |