Commit | Line | Data |
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1da177e4 LT |
1 | # |
2 | # For a description of the syntax of this configuration file, | |
3 | # see Documentation/kbuild/kconfig-language.txt. | |
4 | # | |
5 | ||
6 | mainmenu "Linux Kernel Configuration" | |
7 | ||
8 | config ARM | |
9 | bool | |
10 | default y | |
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 Z |
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 | ||
72 | source "init/Kconfig" | |
73 | ||
74 | menu "System Type" | |
75 | ||
76 | choice | |
77 | prompt "ARM system type" | |
78 | default ARCH_RPC | |
79 | ||
80 | config ARCH_CLPS7500 | |
81 | bool "Cirrus-CL-PS7500FE" | |
82 | select TIMER_ACORN | |
f7e68bbf | 83 | select ISA |
f999b8bd MM |
84 | help |
85 | Support for the Cirrus Logic PS7500FE system-on-a-chip. | |
1da177e4 LT |
86 | |
87 | config ARCH_CLPS711X | |
88 | bool "CLPS711x/EP721x-based" | |
f999b8bd MM |
89 | help |
90 | Support for Cirrus Logic 711x/721x based boards. | |
1da177e4 LT |
91 | |
92 | config ARCH_CO285 | |
93 | bool "Co-EBSA285" | |
94 | select FOOTBRIDGE | |
95 | select FOOTBRIDGE_ADDIN | |
f999b8bd MM |
96 | help |
97 | Support for Intel's EBSA285 companion chip. | |
1da177e4 LT |
98 | |
99 | config ARCH_EBSA110 | |
100 | bool "EBSA-110" | |
f7e68bbf | 101 | select ISA |
1da177e4 LT |
102 | help |
103 | This is an evaluation board for the StrongARM processor available | |
f6c8965a | 104 | from Digital. It has limited hardware on-board, including an |
1da177e4 LT |
105 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
106 | parallel port. | |
107 | ||
1da177e4 LT |
108 | config ARCH_FOOTBRIDGE |
109 | bool "FootBridge" | |
110 | select FOOTBRIDGE | |
f999b8bd MM |
111 | help |
112 | Support for systems based on the DC21285 companion chip | |
113 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
1da177e4 LT |
114 | |
115 | config ARCH_INTEGRATOR | |
116 | bool "Integrator" | |
117 | select ARM_AMBA | |
118 | select ICST525 | |
f999b8bd MM |
119 | help |
120 | Support for ARM's Integrator platform. | |
1da177e4 LT |
121 | |
122 | config ARCH_IOP3XX | |
123 | bool "IOP3xx-based" | |
f7e68bbf | 124 | select PCI |
f999b8bd MM |
125 | help |
126 | Support for Intel's IOP3XX (XScale) family of processors. | |
1da177e4 LT |
127 | |
128 | config ARCH_IXP4XX | |
129 | bool "IXP4xx-based" | |
130 | select DMABOUNCE | |
f7e68bbf | 131 | select PCI |
f999b8bd MM |
132 | help |
133 | Support for Intel's IXP4XX (XScale) family of processors. | |
1da177e4 LT |
134 | |
135 | config ARCH_IXP2000 | |
136 | bool "IXP2400/2800-based" | |
f7e68bbf | 137 | select PCI |
f999b8bd MM |
138 | help |
139 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
1da177e4 LT |
140 | |
141 | config ARCH_L7200 | |
142 | bool "LinkUp-L7200" | |
143 | select FIQ | |
144 | help | |
145 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
146 | L7200 Software Development Board which uses an ARM720T processor. | |
147 | Information on this board can be obtained at: | |
148 | ||
149 | <http://www.linkupsys.com/> | |
150 | ||
151 | If you have any questions or comments about the Linux kernel port | |
152 | to this board, send e-mail to <sjhill@cotw.com>. | |
153 | ||
154 | config ARCH_PXA | |
155 | bool "PXA2xx-based" | |
f999b8bd MM |
156 | help |
157 | Support for Intel's PXA2XX processor line. | |
1da177e4 LT |
158 | |
159 | config ARCH_RPC | |
160 | bool "RiscPC" | |
161 | select ARCH_ACORN | |
162 | select FIQ | |
163 | select TIMER_ACORN | |
a08b6b79 | 164 | select ARCH_MAY_HAVE_PC_FDC |
065909b9 | 165 | select ISA_DMA_API |
1da177e4 LT |
166 | help |
167 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
168 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
169 | ||
170 | config ARCH_SA1100 | |
171 | bool "SA1100-based" | |
f7e68bbf | 172 | select ISA |
3cd9e19e | 173 | select ARCH_DISCONTIGMEM_ENABLE |
f999b8bd MM |
174 | help |
175 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
176 | |
177 | config ARCH_S3C2410 | |
178 | bool "Samsung S3C2410" | |
179 | help | |
180 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
181 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 182 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 LT |
183 | |
184 | config ARCH_SHARK | |
185 | bool "Shark" | |
f7e68bbf RK |
186 | select ISA |
187 | select ISA_DMA | |
188 | select PCI | |
f999b8bd MM |
189 | help |
190 | Support for the StrongARM based Digital DNARD machine, also known | |
191 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
192 | |
193 | config ARCH_LH7A40X | |
194 | bool "Sharp LH7A40X" | |
195 | help | |
196 | Say Y here for systems based on one of the Sharp LH7A40X | |
197 | System on a Chip processors. These CPUs include an ARM922T | |
198 | core with a wide array of integrated devices for | |
199 | hand-held and low-power applications. | |
200 | ||
201 | config ARCH_OMAP | |
202 | bool "TI OMAP" | |
f999b8bd MM |
203 | help |
204 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
1da177e4 LT |
205 | |
206 | config ARCH_VERSATILE | |
207 | bool "Versatile" | |
208 | select ARM_AMBA | |
fa0fe48f | 209 | select ARM_VIC |
1da177e4 LT |
210 | select ICST307 |
211 | help | |
212 | This enables support for ARM Ltd Versatile board. | |
213 | ||
8ad68bbf CM |
214 | config ARCH_REALVIEW |
215 | bool "RealView" | |
216 | select ARM_AMBA | |
217 | select ICST307 | |
218 | help | |
219 | This enables support for ARM Ltd RealView boards. | |
220 | ||
1da177e4 LT |
221 | config ARCH_IMX |
222 | bool "IMX" | |
f999b8bd MM |
223 | help |
224 | Support for Motorola's i.MX family of processors (MX1, MXL). | |
1da177e4 LT |
225 | |
226 | config ARCH_H720X | |
227 | bool "Hynix-HMS720x-based" | |
065909b9 | 228 | select ISA_DMA_API |
1da177e4 LT |
229 | help |
230 | This enables support for systems based on the Hynix HMS720x | |
231 | ||
038c5b60 BN |
232 | config ARCH_AAEC2000 |
233 | bool "Agilent AAEC-2000 based" | |
049eb329 | 234 | select ARM_AMBA |
038c5b60 BN |
235 | help |
236 | This enables support for systems based on the Agilent AAEC-2000 | |
237 | ||
73a59c1c SP |
238 | config ARCH_AT91RM9200 |
239 | bool "AT91RM9200" | |
240 | help | |
f999b8bd MM |
241 | Say Y here if you intend to run this kernel on an Atmel |
242 | AT91RM9200-based board. | |
73a59c1c | 243 | |
1da177e4 LT |
244 | endchoice |
245 | ||
246 | source "arch/arm/mach-clps711x/Kconfig" | |
247 | ||
1da177e4 LT |
248 | source "arch/arm/mach-footbridge/Kconfig" |
249 | ||
250 | source "arch/arm/mach-integrator/Kconfig" | |
251 | ||
252 | source "arch/arm/mach-iop3xx/Kconfig" | |
253 | ||
254 | source "arch/arm/mach-ixp4xx/Kconfig" | |
255 | ||
256 | source "arch/arm/mach-ixp2000/Kconfig" | |
257 | ||
258 | source "arch/arm/mach-pxa/Kconfig" | |
259 | ||
260 | source "arch/arm/mach-sa1100/Kconfig" | |
261 | ||
d48af15e TL |
262 | source "arch/arm/plat-omap/Kconfig" |
263 | ||
264 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 265 | |
1dbae815 TL |
266 | source "arch/arm/mach-omap2/Kconfig" |
267 | ||
1da177e4 LT |
268 | source "arch/arm/mach-s3c2410/Kconfig" |
269 | ||
270 | source "arch/arm/mach-lh7a40x/Kconfig" | |
271 | ||
272 | source "arch/arm/mach-imx/Kconfig" | |
273 | ||
274 | source "arch/arm/mach-h720x/Kconfig" | |
275 | ||
276 | source "arch/arm/mach-versatile/Kconfig" | |
277 | ||
038c5b60 BN |
278 | source "arch/arm/mach-aaec2000/Kconfig" |
279 | ||
8ad68bbf CM |
280 | source "arch/arm/mach-realview/Kconfig" |
281 | ||
73a59c1c SP |
282 | source "arch/arm/mach-at91rm9200/Kconfig" |
283 | ||
1da177e4 LT |
284 | # Definitions to make life easier |
285 | config ARCH_ACORN | |
286 | bool | |
287 | ||
288 | source arch/arm/mm/Kconfig | |
289 | ||
290 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER | |
291 | config XSCALE_PMU | |
292 | bool | |
293 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
294 | default y | |
295 | ||
296 | endmenu | |
297 | ||
298 | source "arch/arm/common/Kconfig" | |
299 | ||
300 | config FORCE_MAX_ZONEORDER | |
301 | int | |
302 | depends on SA1111 | |
303 | default "9" | |
304 | ||
305 | menu "Bus support" | |
306 | ||
307 | config ARM_AMBA | |
308 | bool | |
309 | ||
310 | config ISA | |
311 | bool | |
1da177e4 LT |
312 | help |
313 | Find out whether you have ISA slots on your motherboard. ISA is the | |
314 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
315 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
316 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
317 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
318 | ||
065909b9 | 319 | # Select ISA DMA controller support |
1da177e4 LT |
320 | config ISA_DMA |
321 | bool | |
065909b9 | 322 | select ISA_DMA_API |
1da177e4 | 323 | |
065909b9 | 324 | # Select ISA DMA interface |
5cae841b AV |
325 | config ISA_DMA_API |
326 | bool | |
5cae841b | 327 | |
1da177e4 | 328 | config PCI |
c0da085a | 329 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB |
1da177e4 LT |
330 | help |
331 | Find out whether you have a PCI motherboard. PCI is the name of a | |
332 | bus system, i.e. the way the CPU talks to the other stuff inside | |
333 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
334 | VESA. If you have PCI, say Y, otherwise N. | |
335 | ||
336 | The PCI-HOWTO, available from | |
337 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
338 | information about which PCI hardware does work under Linux and which | |
339 | doesn't. | |
340 | ||
341 | # Select the host bridge type | |
342 | config PCI_HOST_VIA82C505 | |
343 | bool | |
344 | depends on PCI && ARCH_SHARK | |
345 | default y | |
346 | ||
347 | source "drivers/pci/Kconfig" | |
348 | ||
349 | source "drivers/pcmcia/Kconfig" | |
350 | ||
351 | endmenu | |
352 | ||
353 | menu "Kernel Features" | |
354 | ||
355 | config SMP | |
356 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f6db449c | 357 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
1da177e4 LT |
358 | help |
359 | This enables support for systems with more than one CPU. If you have | |
360 | a system with only one CPU, like most personal computers, say N. If | |
361 | you have a system with more than one CPU, say Y. | |
362 | ||
363 | If you say N here, the kernel will run on single and multiprocessor | |
364 | machines, but will use only one CPU of a multiprocessor machine. If | |
365 | you say Y here, the kernel will run on many, but not all, single | |
366 | processor machines. On a single processor machine, the kernel will | |
367 | run faster if you say N here. | |
368 | ||
12c62c2e AO |
369 | See also the <file:Documentation/smp.txt>, |
370 | <file:Documentation/i386/IO-APIC.txt>, | |
1da177e4 LT |
371 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
372 | <http://www.linuxdoc.org/docs.html#howto>. | |
373 | ||
374 | If you don't know what to do here, say N. | |
375 | ||
376 | config NR_CPUS | |
377 | int "Maximum number of CPUs (2-32)" | |
378 | range 2 32 | |
379 | depends on SMP | |
380 | default "4" | |
381 | ||
a054a811 RK |
382 | config HOTPLUG_CPU |
383 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
384 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
385 | help | |
386 | Say Y here to experiment with turning CPUs off and on. CPUs | |
387 | can be controlled through /sys/devices/system/cpu. | |
388 | ||
37ee16ae RK |
389 | config LOCAL_TIMERS |
390 | bool "Use local timer interrupts" | |
2a98beb6 | 391 | depends on SMP && REALVIEW_MPCORE |
37ee16ae RK |
392 | default y |
393 | help | |
394 | Enable support for local timers on SMP platforms, rather then the | |
395 | legacy IPI broadcast method. Local timers allows the system | |
396 | accounting to be spread across the timer interval, preventing a | |
397 | "thundering herd" at every timer tick. | |
398 | ||
1da177e4 LT |
399 | config PREEMPT |
400 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
401 | depends on EXPERIMENTAL | |
402 | help | |
403 | This option reduces the latency of the kernel when reacting to | |
404 | real-time or interactive events by allowing a low priority process to | |
405 | be preempted even if it is in kernel mode executing a system call. | |
406 | This allows applications to run more reliably even when the system is | |
407 | under load. | |
408 | ||
409 | Say Y here if you are building a kernel for a desktop, embedded | |
410 | or real-time system. Say N if you are unsure. | |
411 | ||
8749af68 RK |
412 | config NO_IDLE_HZ |
413 | bool "Dynamic tick timer" | |
414 | help | |
415 | Select this option if you want to disable continuous timer ticks | |
416 | and have them programmed to occur as required. This option saves | |
417 | power as the system can remain in idle state for longer. | |
418 | ||
419 | By default dynamic tick is disabled during the boot, and can be | |
420 | manually enabled with: | |
421 | ||
422 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick | |
423 | ||
424 | Alternatively, if you want dynamic tick automatically enabled | |
425 | during boot, pass "dyntick=enable" via the kernel command string. | |
426 | ||
f2be64b3 TL |
427 | Please note that dynamic tick may affect the accuracy of |
428 | timekeeping on some platforms depending on the implementation. | |
569d2c34 NP |
429 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
430 | to have accurate timekeeping with dynamic tick. | |
f2be64b3 | 431 | |
704bdda0 NP |
432 | config AEABI |
433 | bool "Use the ARM EABI to compile the kernel" | |
434 | help | |
435 | This option allows for the kernel to be compiled using the latest | |
436 | ARM ABI (aka EABI). This is only useful if you are using a user | |
437 | space environment that is also compiled with EABI. | |
438 | ||
439 | Since there are major incompatibilities between the legacy ABI and | |
440 | EABI, especially with regard to structure member alignment, this | |
441 | option also changes the kernel syscall calling convention to | |
442 | disambiguate both ABIs and allow for backward compatibility support | |
443 | (selected with CONFIG_OABI_COMPAT). | |
444 | ||
445 | To use this you need GCC version 4.0.0 or later. | |
446 | ||
6c90c872 NP |
447 | config OABI_COMPAT |
448 | bool "Allow old ABI binaries to run with this kernel" | |
449 | depends on AEABI | |
450 | default y | |
451 | help | |
452 | This option preserves the old syscall interface along with the | |
453 | new (ARM EABI) one. It also provides a compatibility layer to | |
454 | intercept syscalls that have structure arguments which layout | |
455 | in memory differs between the legacy ABI and the new ARM EABI | |
456 | (only for non "thumb" binaries). This option adds a tiny | |
457 | overhead to all syscalls and produces a slightly larger kernel. | |
458 | If you know you'll be using only pure EABI user space then you | |
459 | can say N here. If this option is not selected and you attempt | |
460 | to execute a legacy ABI binary then the result will be | |
461 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
462 | at all). If in doubt say Y. | |
463 | ||
3f22ab27 | 464 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 465 | bool |
f7e68bbf | 466 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
467 | help |
468 | Say Y to support efficient handling of discontiguous physical memory, | |
469 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
470 | or have huge holes in the physical address space for other reasons. | |
471 | See <file:Documentation/vm/numa> for more. | |
472 | ||
3f22ab27 DH |
473 | source "mm/Kconfig" |
474 | ||
1da177e4 LT |
475 | config LEDS |
476 | bool "Timer and CPU usage LEDs" | |
477 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
478 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
479 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
480 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c SP |
481 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
482 | ARCH_AT91RM9200 | |
1da177e4 LT |
483 | help |
484 | If you say Y here, the LEDs on your machine will be used | |
485 | to provide useful information about your current system status. | |
486 | ||
487 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
488 | be able to select which LEDs are active using the options below. If | |
489 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
490 | red LED will simply flash regularly to indicate that the system is | |
491 | still functional. It is safe to say Y here if you have a CATS | |
492 | system, but the driver will do nothing. | |
493 | ||
494 | config LEDS_TIMER | |
495 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
496 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
497 | depends on LEDS | |
498 | default y if ARCH_EBSA110 | |
499 | help | |
500 | If you say Y here, one of the system LEDs (the green one on the | |
501 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
502 | will flash regularly to indicate that the system is still | |
503 | operational. This is mainly useful to kernel hackers who are | |
504 | debugging unstable kernels. | |
505 | ||
506 | The LART uses the same LED for both Timer LED and CPU usage LED | |
507 | functions. You may choose to use both, but the Timer LED function | |
508 | will overrule the CPU usage LED. | |
509 | ||
510 | config LEDS_CPU | |
511 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
512 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
513 | depends on LEDS | |
514 | help | |
515 | If you say Y here, the red LED will be used to give a good real | |
516 | time indication of CPU usage, by lighting whenever the idle task | |
517 | is not currently executing. | |
518 | ||
519 | The LART uses the same LED for both Timer LED and CPU usage LED | |
520 | functions. You may choose to use both, but the Timer LED function | |
521 | will overrule the CPU usage LED. | |
522 | ||
523 | config ALIGNMENT_TRAP | |
524 | bool | |
525 | default y if !ARCH_EBSA110 | |
526 | help | |
527 | ARM processors can not fetch/store information which is not | |
528 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an | |
529 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
530 | fetch/store instructions will be emulated in software if you say | |
531 | here, which has a severe performance impact. This is necessary for | |
532 | correct operation of some network protocols. With an IP-only | |
533 | configuration it is safe to say N, otherwise say Y. | |
534 | ||
535 | endmenu | |
536 | ||
537 | menu "Boot options" | |
538 | ||
539 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
540 | # TEXT and BSS so we preserve their values in the config files. | |
541 | config ZBOOT_ROM_TEXT | |
542 | hex "Compressed ROM boot loader base address" | |
543 | default "0" | |
544 | help | |
545 | The physical address at which the ROM-able zImage is to be | |
546 | placed in the target. Platforms which normally make use of | |
547 | ROM-able zImage formats normally set this to a suitable | |
548 | value in their defconfig file. | |
549 | ||
550 | If ZBOOT_ROM is not enabled, this has no effect. | |
551 | ||
552 | config ZBOOT_ROM_BSS | |
553 | hex "Compressed ROM boot loader BSS address" | |
554 | default "0" | |
555 | help | |
556 | The base address of 64KiB of read/write memory in the target | |
557 | for the ROM-able zImage, which must be available while the | |
558 | decompressor is running. Platforms which normally make use of | |
559 | ROM-able zImage formats normally set this to a suitable | |
560 | value in their defconfig file. | |
561 | ||
562 | If ZBOOT_ROM is not enabled, this has no effect. | |
563 | ||
564 | config ZBOOT_ROM | |
565 | bool "Compressed boot loader in ROM/flash" | |
566 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
567 | help | |
568 | Say Y here if you intend to execute your compressed kernel image | |
569 | (zImage) directly from ROM or flash. If unsure, say N. | |
570 | ||
571 | config CMDLINE | |
572 | string "Default kernel command string" | |
573 | default "" | |
574 | help | |
575 | On some architectures (EBSA110 and CATS), there is currently no way | |
576 | for the boot loader to pass arguments to the kernel. For these | |
577 | architectures, you should supply some command-line options at build | |
578 | time by entering them here. As a minimum, you should specify the | |
579 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
580 | ||
581 | config XIP_KERNEL | |
582 | bool "Kernel Execute-In-Place from ROM" | |
583 | depends on !ZBOOT_ROM | |
584 | help | |
585 | Execute-In-Place allows the kernel to run from non-volatile storage | |
586 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
587 | space since the text section of the kernel is not loaded from flash | |
588 | to RAM. Read-write sections, such as the data section and stack, | |
589 | are still copied to RAM. The XIP kernel is not compressed since | |
590 | it has to run directly from flash, so it will take more space to | |
591 | store it. The flash address used to link the kernel object files, | |
592 | and for storing it, is configuration dependent. Therefore, if you | |
593 | say Y here, you must know the proper physical address where to | |
594 | store the kernel image depending on your own flash memory usage. | |
595 | ||
596 | Also note that the make target becomes "make xipImage" rather than | |
597 | "make zImage" or "make Image". The final kernel binary to put in | |
598 | ROM memory will be arch/arm/boot/xipImage. | |
599 | ||
600 | If unsure, say N. | |
601 | ||
602 | config XIP_PHYS_ADDR | |
603 | hex "XIP Kernel Physical Location" | |
604 | depends on XIP_KERNEL | |
605 | default "0x00080000" | |
606 | help | |
607 | This is the physical address in your flash memory the kernel will | |
608 | be linked for and stored to. This address is dependent on your | |
609 | own flash usage. | |
610 | ||
611 | endmenu | |
612 | ||
ec6bced6 | 613 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1) |
1da177e4 LT |
614 | |
615 | menu "CPU Frequency scaling" | |
616 | ||
617 | source "drivers/cpufreq/Kconfig" | |
618 | ||
619 | config CPU_FREQ_SA1100 | |
620 | bool | |
07c6d48f | 621 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
622 | default y |
623 | ||
624 | config CPU_FREQ_SA1110 | |
625 | bool | |
626 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
627 | default y | |
628 | ||
629 | config CPU_FREQ_INTEGRATOR | |
630 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
631 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
632 | default y | |
633 | help | |
634 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
635 | ||
636 | For details, take a look at <file:Documentation/cpu-freq>. | |
637 | ||
638 | If in doubt, say Y. | |
639 | ||
640 | endmenu | |
641 | ||
642 | endif | |
643 | ||
644 | menu "Floating point emulation" | |
645 | ||
646 | comment "At least one emulation must be selected" | |
647 | ||
648 | config FPE_NWFPE | |
649 | bool "NWFPE math emulation" | |
8993a44c | 650 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
651 | ---help--- |
652 | Say Y to include the NWFPE floating point emulator in the kernel. | |
653 | This is necessary to run most binaries. Linux does not currently | |
654 | support floating point hardware so you need to say Y here even if | |
655 | your machine has an FPA or floating point co-processor podule. | |
656 | ||
657 | You may say N here if you are going to load the Acorn FPEmulator | |
658 | early in the bootup. | |
659 | ||
660 | config FPE_NWFPE_XP | |
661 | bool "Support extended precision" | |
bedf142b | 662 | depends on FPE_NWFPE |
1da177e4 LT |
663 | help |
664 | Say Y to include 80-bit support in the kernel floating-point | |
665 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
666 | Note that gcc does not generate 80-bit operations by default, | |
667 | so in most cases this option only enlarges the size of the | |
668 | floating point emulator without any good reason. | |
669 | ||
670 | You almost surely want to say N here. | |
671 | ||
672 | config FPE_FASTFPE | |
673 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 674 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
675 | ---help--- |
676 | Say Y here to include the FAST floating point emulator in the kernel. | |
677 | This is an experimental much faster emulator which now also has full | |
678 | precision for the mantissa. It does not support any exceptions. | |
679 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
680 | ||
681 | It should be sufficient for most programs. It may be not suitable | |
682 | for scientific calculations, but you have to check this for yourself. | |
683 | If you do not feel you need a faster FP emulation you should better | |
684 | choose NWFPE. | |
685 | ||
686 | config VFP | |
687 | bool "VFP-format floating point maths" | |
688 | depends on CPU_V6 || CPU_ARM926T | |
689 | help | |
690 | Say Y to include VFP support code in the kernel. This is needed | |
691 | if your hardware includes a VFP unit. | |
692 | ||
693 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
694 | release notes and additional status information. | |
695 | ||
696 | Say N if your target does not have VFP hardware. | |
697 | ||
698 | endmenu | |
699 | ||
700 | menu "Userspace binary formats" | |
701 | ||
702 | source "fs/Kconfig.binfmt" | |
703 | ||
704 | config ARTHUR | |
705 | tristate "RISC OS personality" | |
704bdda0 | 706 | depends on !AEABI |
1da177e4 LT |
707 | help |
708 | Say Y here to include the kernel code necessary if you want to run | |
709 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
710 | experimental; if this sounds frightening, say N and sleep in peace. | |
711 | You can also say M here to compile this support as a module (which | |
712 | will be called arthur). | |
713 | ||
714 | endmenu | |
715 | ||
716 | menu "Power management options" | |
717 | ||
eceab4ac | 718 | source "kernel/power/Kconfig" |
1da177e4 | 719 | |
1da177e4 LT |
720 | config APM |
721 | tristate "Advanced Power Management Emulation" | |
1da177e4 LT |
722 | ---help--- |
723 | APM is a BIOS specification for saving power using several different | |
724 | techniques. This is mostly useful for battery powered laptops with | |
725 | APM compliant BIOSes. If you say Y here, the system time will be | |
726 | reset after a RESUME operation, the /proc/apm device will provide | |
727 | battery status information, and user-space programs will receive | |
728 | notification of APM "events" (e.g. battery status change). | |
729 | ||
1da177e4 LT |
730 | In order to use APM, you will need supporting software. For location |
731 | and more information, read <file:Documentation/pm.txt> and the | |
732 | Battery Powered Linux mini-HOWTO, available from | |
733 | <http://www.tldp.org/docs.html#howto>. | |
734 | ||
735 | This driver does not spin down disk drives (see the hdparm(8) | |
736 | manpage ("man 8 hdparm") for that), and it doesn't turn off | |
737 | VESA-compliant "green" monitors. | |
738 | ||
1da177e4 LT |
739 | Generally, if you don't have a battery in your machine, there isn't |
740 | much point in using this driver and you should say N. If you get | |
741 | random kernel OOPSes or reboots that don't seem to be related to | |
742 | anything, try disabling/enabling this option (or disabling/enabling | |
743 | APM in your BIOS). | |
744 | ||
1da177e4 LT |
745 | endmenu |
746 | ||
d5950b43 SR |
747 | source "net/Kconfig" |
748 | ||
1da177e4 LT |
749 | menu "Device Drivers" |
750 | ||
751 | source "drivers/base/Kconfig" | |
752 | ||
c35bf4a5 PM |
753 | source "drivers/connector/Kconfig" |
754 | ||
1da177e4 LT |
755 | if ALIGNMENT_TRAP |
756 | source "drivers/mtd/Kconfig" | |
757 | endif | |
758 | ||
759 | source "drivers/parport/Kconfig" | |
760 | ||
761 | source "drivers/pnp/Kconfig" | |
762 | ||
763 | source "drivers/block/Kconfig" | |
764 | ||
765 | source "drivers/acorn/block/Kconfig" | |
766 | ||
bb011b8e DB |
767 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \ |
768 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ | |
d56c524a | 769 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE |
1da177e4 LT |
770 | source "drivers/ide/Kconfig" |
771 | endif | |
772 | ||
773 | source "drivers/scsi/Kconfig" | |
774 | ||
775 | source "drivers/md/Kconfig" | |
776 | ||
777 | source "drivers/message/fusion/Kconfig" | |
778 | ||
779 | source "drivers/ieee1394/Kconfig" | |
780 | ||
781 | source "drivers/message/i2o/Kconfig" | |
782 | ||
d5950b43 | 783 | source "drivers/net/Kconfig" |
1da177e4 LT |
784 | |
785 | source "drivers/isdn/Kconfig" | |
786 | ||
787 | # input before char - char/joystick depends on it. As does USB. | |
788 | ||
789 | source "drivers/input/Kconfig" | |
790 | ||
791 | source "drivers/char/Kconfig" | |
792 | ||
793 | source "drivers/i2c/Kconfig" | |
794 | ||
8ae12a0d DB |
795 | source "drivers/spi/Kconfig" |
796 | ||
ad2f931d JD |
797 | source "drivers/hwmon/Kconfig" |
798 | ||
1da177e4 LT |
799 | #source "drivers/l3/Kconfig" |
800 | ||
801 | source "drivers/misc/Kconfig" | |
802 | ||
a4e137ab RK |
803 | source "drivers/mfd/Kconfig" |
804 | ||
1da177e4 LT |
805 | source "drivers/media/Kconfig" |
806 | ||
807 | source "drivers/video/Kconfig" | |
808 | ||
809 | source "sound/Kconfig" | |
810 | ||
811 | source "drivers/usb/Kconfig" | |
812 | ||
813 | source "drivers/mmc/Kconfig" | |
814 | ||
815 | endmenu | |
816 | ||
817 | source "fs/Kconfig" | |
818 | ||
819 | source "arch/arm/oprofile/Kconfig" | |
820 | ||
821 | source "arch/arm/Kconfig.debug" | |
822 | ||
823 | source "security/Kconfig" | |
824 | ||
825 | source "crypto/Kconfig" | |
826 | ||
827 | source "lib/Kconfig" |