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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 | |
f6c8965a | 13 | licensed by ARM Ltd and targeted at embedded applications and |
1da177e4 | 14 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer |
f6c8965a | 15 | manufactured, but legacy ARM-based PC hardware remains popular in |
1da177e4 LT |
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 | ||
1da177e4 LT |
49 | config RWSEM_GENERIC_SPINLOCK |
50 | bool | |
51 | default y | |
52 | ||
53 | config RWSEM_XCHGADD_ALGORITHM | |
54 | bool | |
55 | ||
56 | config GENERIC_CALIBRATE_DELAY | |
57 | bool | |
58 | default y | |
59 | ||
60 | config GENERIC_BUST_SPINLOCK | |
61 | bool | |
62 | ||
a08b6b79 AV |
63 | config ARCH_MAY_HAVE_PC_FDC |
64 | bool | |
65 | ||
1da177e4 LT |
66 | config GENERIC_ISA_DMA |
67 | bool | |
68 | ||
1da177e4 LT |
69 | config FIQ |
70 | bool | |
71 | ||
034d2f5a AV |
72 | config ARCH_MTD_XIP |
73 | bool | |
74 | ||
1da177e4 LT |
75 | source "init/Kconfig" |
76 | ||
77 | menu "System Type" | |
78 | ||
79 | choice | |
80 | prompt "ARM system type" | |
6a0e2430 | 81 | default ARCH_VERSATILE |
1da177e4 LT |
82 | |
83 | config ARCH_CLPS7500 | |
84 | bool "Cirrus-CL-PS7500FE" | |
85 | select TIMER_ACORN | |
f7e68bbf | 86 | select ISA |
f999b8bd MM |
87 | help |
88 | Support for the Cirrus Logic PS7500FE system-on-a-chip. | |
1da177e4 LT |
89 | |
90 | config ARCH_CLPS711X | |
91 | bool "CLPS711x/EP721x-based" | |
f999b8bd MM |
92 | help |
93 | Support for Cirrus Logic 711x/721x based boards. | |
1da177e4 LT |
94 | |
95 | config ARCH_CO285 | |
96 | bool "Co-EBSA285" | |
97 | select FOOTBRIDGE | |
98 | select FOOTBRIDGE_ADDIN | |
f999b8bd MM |
99 | help |
100 | Support for Intel's EBSA285 companion chip. | |
1da177e4 LT |
101 | |
102 | config ARCH_EBSA110 | |
103 | bool "EBSA-110" | |
f7e68bbf | 104 | select ISA |
1da177e4 LT |
105 | help |
106 | This is an evaluation board for the StrongARM processor available | |
f6c8965a | 107 | from Digital. It has limited hardware on-board, including an |
1da177e4 LT |
108 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
109 | parallel port. | |
110 | ||
1da177e4 LT |
111 | config ARCH_FOOTBRIDGE |
112 | bool "FootBridge" | |
113 | select FOOTBRIDGE | |
f999b8bd MM |
114 | help |
115 | Support for systems based on the DC21285 companion chip | |
116 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
1da177e4 LT |
117 | |
118 | config ARCH_INTEGRATOR | |
119 | bool "Integrator" | |
120 | select ARM_AMBA | |
121 | select ICST525 | |
f999b8bd MM |
122 | help |
123 | Support for ARM's Integrator platform. | |
1da177e4 LT |
124 | |
125 | config ARCH_IOP3XX | |
126 | bool "IOP3xx-based" | |
f7e68bbf | 127 | select PCI |
f999b8bd MM |
128 | help |
129 | Support for Intel's IOP3XX (XScale) family of processors. | |
1da177e4 LT |
130 | |
131 | config ARCH_IXP4XX | |
132 | bool "IXP4xx-based" | |
133 | select DMABOUNCE | |
f7e68bbf | 134 | select PCI |
f999b8bd MM |
135 | help |
136 | Support for Intel's IXP4XX (XScale) family of processors. | |
1da177e4 LT |
137 | |
138 | config ARCH_IXP2000 | |
139 | bool "IXP2400/2800-based" | |
f7e68bbf | 140 | select PCI |
f999b8bd MM |
141 | help |
142 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
1da177e4 LT |
143 | |
144 | config ARCH_L7200 | |
145 | bool "LinkUp-L7200" | |
146 | select FIQ | |
147 | help | |
148 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
149 | L7200 Software Development Board which uses an ARM720T processor. | |
150 | Information on this board can be obtained at: | |
151 | ||
152 | <http://www.linkupsys.com/> | |
153 | ||
154 | If you have any questions or comments about the Linux kernel port | |
155 | to this board, send e-mail to <sjhill@cotw.com>. | |
156 | ||
157 | config ARCH_PXA | |
158 | bool "PXA2xx-based" | |
034d2f5a | 159 | select ARCH_MTD_XIP |
f999b8bd MM |
160 | help |
161 | Support for Intel's PXA2XX processor line. | |
1da177e4 LT |
162 | |
163 | config ARCH_RPC | |
164 | bool "RiscPC" | |
165 | select ARCH_ACORN | |
166 | select FIQ | |
167 | select TIMER_ACORN | |
a08b6b79 | 168 | select ARCH_MAY_HAVE_PC_FDC |
065909b9 | 169 | select ISA_DMA_API |
1da177e4 LT |
170 | help |
171 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
172 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
173 | ||
174 | config ARCH_SA1100 | |
175 | bool "SA1100-based" | |
f7e68bbf | 176 | select ISA |
3cd9e19e | 177 | select ARCH_DISCONTIGMEM_ENABLE |
034d2f5a | 178 | select ARCH_MTD_XIP |
f999b8bd MM |
179 | help |
180 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
181 | |
182 | config ARCH_S3C2410 | |
183 | bool "Samsung S3C2410" | |
184 | help | |
185 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
186 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 187 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 LT |
188 | |
189 | config ARCH_SHARK | |
190 | bool "Shark" | |
f7e68bbf RK |
191 | select ISA |
192 | select ISA_DMA | |
193 | select PCI | |
f999b8bd MM |
194 | help |
195 | Support for the StrongARM based Digital DNARD machine, also known | |
196 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
197 | |
198 | config ARCH_LH7A40X | |
199 | bool "Sharp LH7A40X" | |
200 | help | |
201 | Say Y here for systems based on one of the Sharp LH7A40X | |
202 | System on a Chip processors. These CPUs include an ARM922T | |
203 | core with a wide array of integrated devices for | |
204 | hand-held and low-power applications. | |
205 | ||
206 | config ARCH_OMAP | |
207 | bool "TI OMAP" | |
f999b8bd MM |
208 | help |
209 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
1da177e4 LT |
210 | |
211 | config ARCH_VERSATILE | |
212 | bool "Versatile" | |
213 | select ARM_AMBA | |
fa0fe48f | 214 | select ARM_VIC |
1da177e4 LT |
215 | select ICST307 |
216 | help | |
217 | This enables support for ARM Ltd Versatile board. | |
218 | ||
8ad68bbf CM |
219 | config ARCH_REALVIEW |
220 | bool "RealView" | |
221 | select ARM_AMBA | |
222 | select ICST307 | |
223 | help | |
224 | This enables support for ARM Ltd RealView boards. | |
225 | ||
1da177e4 LT |
226 | config ARCH_IMX |
227 | bool "IMX" | |
f999b8bd MM |
228 | help |
229 | Support for Motorola's i.MX family of processors (MX1, MXL). | |
1da177e4 LT |
230 | |
231 | config ARCH_H720X | |
232 | bool "Hynix-HMS720x-based" | |
065909b9 | 233 | select ISA_DMA_API |
1da177e4 LT |
234 | help |
235 | This enables support for systems based on the Hynix HMS720x | |
236 | ||
038c5b60 BN |
237 | config ARCH_AAEC2000 |
238 | bool "Agilent AAEC-2000 based" | |
049eb329 | 239 | select ARM_AMBA |
038c5b60 BN |
240 | help |
241 | This enables support for systems based on the Agilent AAEC-2000 | |
242 | ||
73a59c1c SP |
243 | config ARCH_AT91RM9200 |
244 | bool "AT91RM9200" | |
245 | help | |
f999b8bd MM |
246 | Say Y here if you intend to run this kernel on an Atmel |
247 | AT91RM9200-based board. | |
73a59c1c | 248 | |
1da177e4 LT |
249 | endchoice |
250 | ||
251 | source "arch/arm/mach-clps711x/Kconfig" | |
252 | ||
1da177e4 LT |
253 | source "arch/arm/mach-footbridge/Kconfig" |
254 | ||
255 | source "arch/arm/mach-integrator/Kconfig" | |
256 | ||
257 | source "arch/arm/mach-iop3xx/Kconfig" | |
258 | ||
259 | source "arch/arm/mach-ixp4xx/Kconfig" | |
260 | ||
261 | source "arch/arm/mach-ixp2000/Kconfig" | |
262 | ||
263 | source "arch/arm/mach-pxa/Kconfig" | |
264 | ||
265 | source "arch/arm/mach-sa1100/Kconfig" | |
266 | ||
d48af15e TL |
267 | source "arch/arm/plat-omap/Kconfig" |
268 | ||
269 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 270 | |
1dbae815 TL |
271 | source "arch/arm/mach-omap2/Kconfig" |
272 | ||
1da177e4 LT |
273 | source "arch/arm/mach-s3c2410/Kconfig" |
274 | ||
275 | source "arch/arm/mach-lh7a40x/Kconfig" | |
276 | ||
277 | source "arch/arm/mach-imx/Kconfig" | |
278 | ||
279 | source "arch/arm/mach-h720x/Kconfig" | |
280 | ||
281 | source "arch/arm/mach-versatile/Kconfig" | |
282 | ||
038c5b60 BN |
283 | source "arch/arm/mach-aaec2000/Kconfig" |
284 | ||
8ad68bbf CM |
285 | source "arch/arm/mach-realview/Kconfig" |
286 | ||
73a59c1c SP |
287 | source "arch/arm/mach-at91rm9200/Kconfig" |
288 | ||
1da177e4 LT |
289 | # Definitions to make life easier |
290 | config ARCH_ACORN | |
291 | bool | |
292 | ||
293 | source arch/arm/mm/Kconfig | |
294 | ||
295 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER | |
296 | config XSCALE_PMU | |
297 | bool | |
298 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
299 | default y | |
300 | ||
301 | endmenu | |
302 | ||
303 | source "arch/arm/common/Kconfig" | |
304 | ||
305 | config FORCE_MAX_ZONEORDER | |
306 | int | |
307 | depends on SA1111 | |
308 | default "9" | |
309 | ||
310 | menu "Bus support" | |
311 | ||
312 | config ARM_AMBA | |
313 | bool | |
314 | ||
315 | config ISA | |
316 | bool | |
1da177e4 LT |
317 | help |
318 | Find out whether you have ISA slots on your motherboard. ISA is the | |
319 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
320 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
321 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
322 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
323 | ||
065909b9 | 324 | # Select ISA DMA controller support |
1da177e4 LT |
325 | config ISA_DMA |
326 | bool | |
065909b9 | 327 | select ISA_DMA_API |
1da177e4 | 328 | |
065909b9 | 329 | # Select ISA DMA interface |
5cae841b AV |
330 | config ISA_DMA_API |
331 | bool | |
5cae841b | 332 | |
1da177e4 | 333 | config PCI |
c0da085a | 334 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB |
1da177e4 LT |
335 | help |
336 | Find out whether you have a PCI motherboard. PCI is the name of a | |
337 | bus system, i.e. the way the CPU talks to the other stuff inside | |
338 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
339 | VESA. If you have PCI, say Y, otherwise N. | |
340 | ||
341 | The PCI-HOWTO, available from | |
342 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
343 | information about which PCI hardware does work under Linux and which | |
344 | doesn't. | |
345 | ||
346 | # Select the host bridge type | |
347 | config PCI_HOST_VIA82C505 | |
348 | bool | |
349 | depends on PCI && ARCH_SHARK | |
350 | default y | |
351 | ||
352 | source "drivers/pci/Kconfig" | |
353 | ||
354 | source "drivers/pcmcia/Kconfig" | |
355 | ||
356 | endmenu | |
357 | ||
358 | menu "Kernel Features" | |
359 | ||
360 | config SMP | |
361 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f6db449c | 362 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
1da177e4 LT |
363 | help |
364 | This enables support for systems with more than one CPU. If you have | |
365 | a system with only one CPU, like most personal computers, say N. If | |
366 | you have a system with more than one CPU, say Y. | |
367 | ||
368 | If you say N here, the kernel will run on single and multiprocessor | |
369 | machines, but will use only one CPU of a multiprocessor machine. If | |
370 | you say Y here, the kernel will run on many, but not all, single | |
371 | processor machines. On a single processor machine, the kernel will | |
372 | run faster if you say N here. | |
373 | ||
12c62c2e AO |
374 | See also the <file:Documentation/smp.txt>, |
375 | <file:Documentation/i386/IO-APIC.txt>, | |
1da177e4 LT |
376 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
377 | <http://www.linuxdoc.org/docs.html#howto>. | |
378 | ||
379 | If you don't know what to do here, say N. | |
380 | ||
381 | config NR_CPUS | |
382 | int "Maximum number of CPUs (2-32)" | |
383 | range 2 32 | |
384 | depends on SMP | |
385 | default "4" | |
386 | ||
a054a811 RK |
387 | config HOTPLUG_CPU |
388 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
389 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
390 | help | |
391 | Say Y here to experiment with turning CPUs off and on. CPUs | |
392 | can be controlled through /sys/devices/system/cpu. | |
393 | ||
37ee16ae RK |
394 | config LOCAL_TIMERS |
395 | bool "Use local timer interrupts" | |
2a98beb6 | 396 | depends on SMP && REALVIEW_MPCORE |
37ee16ae RK |
397 | default y |
398 | help | |
399 | Enable support for local timers on SMP platforms, rather then the | |
400 | legacy IPI broadcast method. Local timers allows the system | |
401 | accounting to be spread across the timer interval, preventing a | |
402 | "thundering herd" at every timer tick. | |
403 | ||
1da177e4 LT |
404 | config PREEMPT |
405 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
406 | depends on EXPERIMENTAL | |
407 | help | |
408 | This option reduces the latency of the kernel when reacting to | |
409 | real-time or interactive events by allowing a low priority process to | |
410 | be preempted even if it is in kernel mode executing a system call. | |
411 | This allows applications to run more reliably even when the system is | |
412 | under load. | |
413 | ||
414 | Say Y here if you are building a kernel for a desktop, embedded | |
415 | or real-time system. Say N if you are unsure. | |
416 | ||
8749af68 RK |
417 | config NO_IDLE_HZ |
418 | bool "Dynamic tick timer" | |
419 | help | |
420 | Select this option if you want to disable continuous timer ticks | |
421 | and have them programmed to occur as required. This option saves | |
422 | power as the system can remain in idle state for longer. | |
423 | ||
424 | By default dynamic tick is disabled during the boot, and can be | |
425 | manually enabled with: | |
426 | ||
427 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick | |
428 | ||
429 | Alternatively, if you want dynamic tick automatically enabled | |
430 | during boot, pass "dyntick=enable" via the kernel command string. | |
431 | ||
f2be64b3 TL |
432 | Please note that dynamic tick may affect the accuracy of |
433 | timekeeping on some platforms depending on the implementation. | |
569d2c34 NP |
434 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
435 | to have accurate timekeeping with dynamic tick. | |
f2be64b3 | 436 | |
704bdda0 NP |
437 | config AEABI |
438 | bool "Use the ARM EABI to compile the kernel" | |
439 | help | |
440 | This option allows for the kernel to be compiled using the latest | |
441 | ARM ABI (aka EABI). This is only useful if you are using a user | |
442 | space environment that is also compiled with EABI. | |
443 | ||
444 | Since there are major incompatibilities between the legacy ABI and | |
445 | EABI, especially with regard to structure member alignment, this | |
446 | option also changes the kernel syscall calling convention to | |
447 | disambiguate both ABIs and allow for backward compatibility support | |
448 | (selected with CONFIG_OABI_COMPAT). | |
449 | ||
450 | To use this you need GCC version 4.0.0 or later. | |
451 | ||
6c90c872 | 452 | config OABI_COMPAT |
a73a3ff1 | 453 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
61c484d4 | 454 | depends on AEABI && EXPERIMENTAL |
6c90c872 NP |
455 | default y |
456 | help | |
457 | This option preserves the old syscall interface along with the | |
458 | new (ARM EABI) one. It also provides a compatibility layer to | |
459 | intercept syscalls that have structure arguments which layout | |
460 | in memory differs between the legacy ABI and the new ARM EABI | |
461 | (only for non "thumb" binaries). This option adds a tiny | |
462 | overhead to all syscalls and produces a slightly larger kernel. | |
463 | If you know you'll be using only pure EABI user space then you | |
464 | can say N here. If this option is not selected and you attempt | |
465 | to execute a legacy ABI binary then the result will be | |
466 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
467 | at all). If in doubt say Y. | |
468 | ||
3f22ab27 | 469 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 470 | bool |
f7e68bbf | 471 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
472 | help |
473 | Say Y to support efficient handling of discontiguous physical memory, | |
474 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
475 | or have huge holes in the physical address space for other reasons. | |
476 | See <file:Documentation/vm/numa> for more. | |
477 | ||
3f22ab27 DH |
478 | source "mm/Kconfig" |
479 | ||
1da177e4 LT |
480 | config LEDS |
481 | bool "Timer and CPU usage LEDs" | |
482 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
483 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
484 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
485 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c SP |
486 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
487 | ARCH_AT91RM9200 | |
1da177e4 LT |
488 | help |
489 | If you say Y here, the LEDs on your machine will be used | |
490 | to provide useful information about your current system status. | |
491 | ||
492 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
493 | be able to select which LEDs are active using the options below. If | |
494 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
495 | red LED will simply flash regularly to indicate that the system is | |
496 | still functional. It is safe to say Y here if you have a CATS | |
497 | system, but the driver will do nothing. | |
498 | ||
499 | config LEDS_TIMER | |
500 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
501 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
502 | depends on LEDS | |
503 | default y if ARCH_EBSA110 | |
504 | help | |
505 | If you say Y here, one of the system LEDs (the green one on the | |
506 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
507 | will flash regularly to indicate that the system is still | |
508 | operational. This is mainly useful to kernel hackers who are | |
509 | debugging unstable kernels. | |
510 | ||
511 | The LART uses the same LED for both Timer LED and CPU usage LED | |
512 | functions. You may choose to use both, but the Timer LED function | |
513 | will overrule the CPU usage LED. | |
514 | ||
515 | config LEDS_CPU | |
516 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
517 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
518 | depends on LEDS | |
519 | help | |
520 | If you say Y here, the red LED will be used to give a good real | |
521 | time indication of CPU usage, by lighting whenever the idle task | |
522 | is not currently executing. | |
523 | ||
524 | The LART uses the same LED for both Timer LED and CPU usage LED | |
525 | functions. You may choose to use both, but the Timer LED function | |
526 | will overrule the CPU usage LED. | |
527 | ||
528 | config ALIGNMENT_TRAP | |
529 | bool | |
530 | default y if !ARCH_EBSA110 | |
531 | help | |
532 | ARM processors can not fetch/store information which is not | |
533 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an | |
534 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
535 | fetch/store instructions will be emulated in software if you say | |
536 | here, which has a severe performance impact. This is necessary for | |
537 | correct operation of some network protocols. With an IP-only | |
538 | configuration it is safe to say N, otherwise say Y. | |
539 | ||
540 | endmenu | |
541 | ||
542 | menu "Boot options" | |
543 | ||
544 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
545 | # TEXT and BSS so we preserve their values in the config files. | |
546 | config ZBOOT_ROM_TEXT | |
547 | hex "Compressed ROM boot loader base address" | |
548 | default "0" | |
549 | help | |
550 | The physical address at which the ROM-able zImage is to be | |
551 | placed in the target. Platforms which normally make use of | |
552 | ROM-able zImage formats normally set this to a suitable | |
553 | value in their defconfig file. | |
554 | ||
555 | If ZBOOT_ROM is not enabled, this has no effect. | |
556 | ||
557 | config ZBOOT_ROM_BSS | |
558 | hex "Compressed ROM boot loader BSS address" | |
559 | default "0" | |
560 | help | |
561 | The base address of 64KiB of read/write memory in the target | |
562 | for the ROM-able zImage, which must be available while the | |
563 | decompressor is running. Platforms which normally make use of | |
564 | ROM-able zImage formats normally set this to a suitable | |
565 | value in their defconfig file. | |
566 | ||
567 | If ZBOOT_ROM is not enabled, this has no effect. | |
568 | ||
569 | config ZBOOT_ROM | |
570 | bool "Compressed boot loader in ROM/flash" | |
571 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
572 | help | |
573 | Say Y here if you intend to execute your compressed kernel image | |
574 | (zImage) directly from ROM or flash. If unsure, say N. | |
575 | ||
576 | config CMDLINE | |
577 | string "Default kernel command string" | |
578 | default "" | |
579 | help | |
580 | On some architectures (EBSA110 and CATS), there is currently no way | |
581 | for the boot loader to pass arguments to the kernel. For these | |
582 | architectures, you should supply some command-line options at build | |
583 | time by entering them here. As a minimum, you should specify the | |
584 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
585 | ||
586 | config XIP_KERNEL | |
587 | bool "Kernel Execute-In-Place from ROM" | |
588 | depends on !ZBOOT_ROM | |
589 | help | |
590 | Execute-In-Place allows the kernel to run from non-volatile storage | |
591 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
592 | space since the text section of the kernel is not loaded from flash | |
593 | to RAM. Read-write sections, such as the data section and stack, | |
594 | are still copied to RAM. The XIP kernel is not compressed since | |
595 | it has to run directly from flash, so it will take more space to | |
596 | store it. The flash address used to link the kernel object files, | |
597 | and for storing it, is configuration dependent. Therefore, if you | |
598 | say Y here, you must know the proper physical address where to | |
599 | store the kernel image depending on your own flash memory usage. | |
600 | ||
601 | Also note that the make target becomes "make xipImage" rather than | |
602 | "make zImage" or "make Image". The final kernel binary to put in | |
603 | ROM memory will be arch/arm/boot/xipImage. | |
604 | ||
605 | If unsure, say N. | |
606 | ||
607 | config XIP_PHYS_ADDR | |
608 | hex "XIP Kernel Physical Location" | |
609 | depends on XIP_KERNEL | |
610 | default "0x00080000" | |
611 | help | |
612 | This is the physical address in your flash memory the kernel will | |
613 | be linked for and stored to. This address is dependent on your | |
614 | own flash usage. | |
615 | ||
616 | endmenu | |
617 | ||
ec6bced6 | 618 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1) |
1da177e4 LT |
619 | |
620 | menu "CPU Frequency scaling" | |
621 | ||
622 | source "drivers/cpufreq/Kconfig" | |
623 | ||
624 | config CPU_FREQ_SA1100 | |
625 | bool | |
07c6d48f | 626 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
627 | default y |
628 | ||
629 | config CPU_FREQ_SA1110 | |
630 | bool | |
631 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
632 | default y | |
633 | ||
634 | config CPU_FREQ_INTEGRATOR | |
635 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
636 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
637 | default y | |
638 | help | |
639 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
640 | ||
641 | For details, take a look at <file:Documentation/cpu-freq>. | |
642 | ||
643 | If in doubt, say Y. | |
644 | ||
645 | endmenu | |
646 | ||
647 | endif | |
648 | ||
649 | menu "Floating point emulation" | |
650 | ||
651 | comment "At least one emulation must be selected" | |
652 | ||
653 | config FPE_NWFPE | |
654 | bool "NWFPE math emulation" | |
8993a44c | 655 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
656 | ---help--- |
657 | Say Y to include the NWFPE floating point emulator in the kernel. | |
658 | This is necessary to run most binaries. Linux does not currently | |
659 | support floating point hardware so you need to say Y here even if | |
660 | your machine has an FPA or floating point co-processor podule. | |
661 | ||
662 | You may say N here if you are going to load the Acorn FPEmulator | |
663 | early in the bootup. | |
664 | ||
665 | config FPE_NWFPE_XP | |
666 | bool "Support extended precision" | |
bedf142b | 667 | depends on FPE_NWFPE |
1da177e4 LT |
668 | help |
669 | Say Y to include 80-bit support in the kernel floating-point | |
670 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
671 | Note that gcc does not generate 80-bit operations by default, | |
672 | so in most cases this option only enlarges the size of the | |
673 | floating point emulator without any good reason. | |
674 | ||
675 | You almost surely want to say N here. | |
676 | ||
677 | config FPE_FASTFPE | |
678 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 679 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
680 | ---help--- |
681 | Say Y here to include the FAST floating point emulator in the kernel. | |
682 | This is an experimental much faster emulator which now also has full | |
683 | precision for the mantissa. It does not support any exceptions. | |
684 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
685 | ||
686 | It should be sufficient for most programs. It may be not suitable | |
687 | for scientific calculations, but you have to check this for yourself. | |
688 | If you do not feel you need a faster FP emulation you should better | |
689 | choose NWFPE. | |
690 | ||
691 | config VFP | |
692 | bool "VFP-format floating point maths" | |
693 | depends on CPU_V6 || CPU_ARM926T | |
694 | help | |
695 | Say Y to include VFP support code in the kernel. This is needed | |
696 | if your hardware includes a VFP unit. | |
697 | ||
698 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
699 | release notes and additional status information. | |
700 | ||
701 | Say N if your target does not have VFP hardware. | |
702 | ||
703 | endmenu | |
704 | ||
705 | menu "Userspace binary formats" | |
706 | ||
707 | source "fs/Kconfig.binfmt" | |
708 | ||
709 | config ARTHUR | |
710 | tristate "RISC OS personality" | |
704bdda0 | 711 | depends on !AEABI |
1da177e4 LT |
712 | help |
713 | Say Y here to include the kernel code necessary if you want to run | |
714 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
715 | experimental; if this sounds frightening, say N and sleep in peace. | |
716 | You can also say M here to compile this support as a module (which | |
717 | will be called arthur). | |
718 | ||
719 | endmenu | |
720 | ||
721 | menu "Power management options" | |
722 | ||
eceab4ac | 723 | source "kernel/power/Kconfig" |
1da177e4 | 724 | |
1da177e4 LT |
725 | config APM |
726 | tristate "Advanced Power Management Emulation" | |
1da177e4 LT |
727 | ---help--- |
728 | APM is a BIOS specification for saving power using several different | |
729 | techniques. This is mostly useful for battery powered laptops with | |
730 | APM compliant BIOSes. If you say Y here, the system time will be | |
731 | reset after a RESUME operation, the /proc/apm device will provide | |
732 | battery status information, and user-space programs will receive | |
733 | notification of APM "events" (e.g. battery status change). | |
734 | ||
1da177e4 LT |
735 | In order to use APM, you will need supporting software. For location |
736 | and more information, read <file:Documentation/pm.txt> and the | |
737 | Battery Powered Linux mini-HOWTO, available from | |
738 | <http://www.tldp.org/docs.html#howto>. | |
739 | ||
740 | This driver does not spin down disk drives (see the hdparm(8) | |
741 | manpage ("man 8 hdparm") for that), and it doesn't turn off | |
742 | VESA-compliant "green" monitors. | |
743 | ||
1da177e4 LT |
744 | Generally, if you don't have a battery in your machine, there isn't |
745 | much point in using this driver and you should say N. If you get | |
746 | random kernel OOPSes or reboots that don't seem to be related to | |
747 | anything, try disabling/enabling this option (or disabling/enabling | |
748 | APM in your BIOS). | |
749 | ||
1da177e4 LT |
750 | endmenu |
751 | ||
d5950b43 SR |
752 | source "net/Kconfig" |
753 | ||
1da177e4 LT |
754 | menu "Device Drivers" |
755 | ||
756 | source "drivers/base/Kconfig" | |
757 | ||
c35bf4a5 PM |
758 | source "drivers/connector/Kconfig" |
759 | ||
1da177e4 LT |
760 | if ALIGNMENT_TRAP |
761 | source "drivers/mtd/Kconfig" | |
762 | endif | |
763 | ||
764 | source "drivers/parport/Kconfig" | |
765 | ||
766 | source "drivers/pnp/Kconfig" | |
767 | ||
768 | source "drivers/block/Kconfig" | |
769 | ||
770 | source "drivers/acorn/block/Kconfig" | |
771 | ||
bb011b8e DB |
772 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \ |
773 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ | |
d56c524a | 774 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE |
1da177e4 LT |
775 | source "drivers/ide/Kconfig" |
776 | endif | |
777 | ||
778 | source "drivers/scsi/Kconfig" | |
779 | ||
780 | source "drivers/md/Kconfig" | |
781 | ||
782 | source "drivers/message/fusion/Kconfig" | |
783 | ||
784 | source "drivers/ieee1394/Kconfig" | |
785 | ||
786 | source "drivers/message/i2o/Kconfig" | |
787 | ||
d5950b43 | 788 | source "drivers/net/Kconfig" |
1da177e4 LT |
789 | |
790 | source "drivers/isdn/Kconfig" | |
791 | ||
792 | # input before char - char/joystick depends on it. As does USB. | |
793 | ||
794 | source "drivers/input/Kconfig" | |
795 | ||
796 | source "drivers/char/Kconfig" | |
797 | ||
798 | source "drivers/i2c/Kconfig" | |
799 | ||
8ae12a0d DB |
800 | source "drivers/spi/Kconfig" |
801 | ||
04916c0e AZ |
802 | source "drivers/w1/Kconfig" |
803 | ||
ad2f931d JD |
804 | source "drivers/hwmon/Kconfig" |
805 | ||
1da177e4 LT |
806 | #source "drivers/l3/Kconfig" |
807 | ||
808 | source "drivers/misc/Kconfig" | |
809 | ||
a4e137ab RK |
810 | source "drivers/mfd/Kconfig" |
811 | ||
1da177e4 LT |
812 | source "drivers/media/Kconfig" |
813 | ||
814 | source "drivers/video/Kconfig" | |
815 | ||
816 | source "sound/Kconfig" | |
817 | ||
818 | source "drivers/usb/Kconfig" | |
819 | ||
820 | source "drivers/mmc/Kconfig" | |
821 | ||
822 | endmenu | |
823 | ||
824 | source "fs/Kconfig" | |
825 | ||
826 | source "arch/arm/oprofile/Kconfig" | |
827 | ||
828 | source "arch/arm/Kconfig.debug" | |
829 | ||
830 | source "security/Kconfig" | |
831 | ||
832 | source "crypto/Kconfig" | |
833 | ||
834 | source "lib/Kconfig" |