]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | # |
2 | # For a description of the syntax of this configuration file, | |
3 | # see Documentation/kbuild/kconfig-language.txt. | |
4 | # | |
5 | ||
6 | mainmenu "Linux Kernel Configuration" | |
7 | ||
8 | config ARM | |
9 | bool | |
10 | default y | |
11 | help | |
12 | The ARM series is a line of low-power-consumption RISC chip designs | |
13 | licensed by ARM ltd and targeted at embedded applications and | |
14 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer | |
15 | manufactured, but legacy ARM-based PC hardware remains popular in | |
16 | Europe. There is an ARM Linux project with a web page at | |
17 | <http://www.arm.linux.org.uk/>. | |
18 | ||
19 | config MMU | |
20 | bool | |
21 | default y | |
22 | ||
23 | config EISA | |
24 | bool | |
25 | ---help--- | |
26 | The Extended Industry Standard Architecture (EISA) bus was | |
27 | developed as an open alternative to the IBM MicroChannel bus. | |
28 | ||
29 | The EISA bus provided some of the features of the IBM MicroChannel | |
30 | bus while maintaining backward compatibility with cards made for | |
31 | the older ISA bus. The EISA bus saw limited use between 1988 and | |
32 | 1995 when it was made obsolete by the PCI bus. | |
33 | ||
34 | Say Y here if you are building a kernel for an EISA-based machine. | |
35 | ||
36 | Otherwise, say N. | |
37 | ||
38 | config SBUS | |
39 | bool | |
40 | ||
41 | config MCA | |
42 | bool | |
43 | help | |
44 | MicroChannel Architecture is found in some IBM PS/2 machines and | |
45 | laptops. It is a bus system similar to PCI or ISA. See | |
46 | <file:Documentation/mca.txt> (and especially the web page given | |
47 | there) before attempting to build an MCA bus kernel. | |
48 | ||
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 | ||
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 |
1da177e4 LT |
84 | |
85 | config ARCH_CLPS711X | |
86 | bool "CLPS711x/EP721x-based" | |
87 | ||
88 | config ARCH_CO285 | |
89 | bool "Co-EBSA285" | |
90 | select FOOTBRIDGE | |
91 | select FOOTBRIDGE_ADDIN | |
92 | ||
93 | config ARCH_EBSA110 | |
94 | bool "EBSA-110" | |
f7e68bbf | 95 | select ISA |
1da177e4 LT |
96 | help |
97 | This is an evaluation board for the StrongARM processor available | |
98 | from Digital. It has limited hardware on-board, including an onboard | |
99 | Ethernet interface, two PCMCIA sockets, two serial ports and a | |
100 | parallel port. | |
101 | ||
1da177e4 LT |
102 | config ARCH_FOOTBRIDGE |
103 | bool "FootBridge" | |
104 | select FOOTBRIDGE | |
105 | ||
106 | config ARCH_INTEGRATOR | |
107 | bool "Integrator" | |
108 | select ARM_AMBA | |
109 | select ICST525 | |
110 | ||
111 | config ARCH_IOP3XX | |
112 | bool "IOP3xx-based" | |
f7e68bbf | 113 | select PCI |
1da177e4 LT |
114 | |
115 | config ARCH_IXP4XX | |
116 | bool "IXP4xx-based" | |
117 | select DMABOUNCE | |
f7e68bbf | 118 | select PCI |
1da177e4 LT |
119 | |
120 | config ARCH_IXP2000 | |
121 | bool "IXP2400/2800-based" | |
f7e68bbf | 122 | select PCI |
1da177e4 LT |
123 | |
124 | config ARCH_L7200 | |
125 | bool "LinkUp-L7200" | |
126 | select FIQ | |
127 | help | |
128 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
129 | L7200 Software Development Board which uses an ARM720T processor. | |
130 | Information on this board can be obtained at: | |
131 | ||
132 | <http://www.linkupsys.com/> | |
133 | ||
134 | If you have any questions or comments about the Linux kernel port | |
135 | to this board, send e-mail to <sjhill@cotw.com>. | |
136 | ||
137 | config ARCH_PXA | |
138 | bool "PXA2xx-based" | |
139 | ||
140 | config ARCH_RPC | |
141 | bool "RiscPC" | |
142 | select ARCH_ACORN | |
143 | select FIQ | |
144 | select TIMER_ACORN | |
a08b6b79 | 145 | select ARCH_MAY_HAVE_PC_FDC |
065909b9 | 146 | select ISA_DMA_API |
1da177e4 LT |
147 | help |
148 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
149 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
150 | ||
151 | config ARCH_SA1100 | |
152 | bool "SA1100-based" | |
f7e68bbf | 153 | select ISA |
3cd9e19e | 154 | select ARCH_DISCONTIGMEM_ENABLE |
1da177e4 LT |
155 | |
156 | config ARCH_S3C2410 | |
157 | bool "Samsung S3C2410" | |
158 | help | |
159 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
160 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
161 | the Samsung SMDK2410 development board (and derviatives). | |
162 | ||
163 | config ARCH_SHARK | |
164 | bool "Shark" | |
f7e68bbf RK |
165 | select ISA |
166 | select ISA_DMA | |
167 | select PCI | |
1da177e4 LT |
168 | |
169 | config ARCH_LH7A40X | |
170 | bool "Sharp LH7A40X" | |
171 | help | |
172 | Say Y here for systems based on one of the Sharp LH7A40X | |
173 | System on a Chip processors. These CPUs include an ARM922T | |
174 | core with a wide array of integrated devices for | |
175 | hand-held and low-power applications. | |
176 | ||
177 | config ARCH_OMAP | |
178 | bool "TI OMAP" | |
179 | ||
180 | config ARCH_VERSATILE | |
181 | bool "Versatile" | |
182 | select ARM_AMBA | |
fa0fe48f | 183 | select ARM_VIC |
1da177e4 LT |
184 | select ICST307 |
185 | help | |
186 | This enables support for ARM Ltd Versatile board. | |
187 | ||
8ad68bbf CM |
188 | config ARCH_REALVIEW |
189 | bool "RealView" | |
190 | select ARM_AMBA | |
191 | select ICST307 | |
192 | help | |
193 | This enables support for ARM Ltd RealView boards. | |
194 | ||
1da177e4 LT |
195 | config ARCH_IMX |
196 | bool "IMX" | |
197 | ||
198 | config ARCH_H720X | |
199 | bool "Hynix-HMS720x-based" | |
065909b9 | 200 | select ISA_DMA_API |
1da177e4 LT |
201 | help |
202 | This enables support for systems based on the Hynix HMS720x | |
203 | ||
038c5b60 BN |
204 | config ARCH_AAEC2000 |
205 | bool "Agilent AAEC-2000 based" | |
049eb329 | 206 | select ARM_AMBA |
038c5b60 BN |
207 | help |
208 | This enables support for systems based on the Agilent AAEC-2000 | |
209 | ||
73a59c1c SP |
210 | config ARCH_AT91RM9200 |
211 | bool "AT91RM9200" | |
212 | help | |
213 | Say Y here if you intend to run this kernel on an AT91RM9200-based | |
214 | board. | |
215 | ||
1da177e4 LT |
216 | endchoice |
217 | ||
218 | source "arch/arm/mach-clps711x/Kconfig" | |
219 | ||
1da177e4 LT |
220 | source "arch/arm/mach-footbridge/Kconfig" |
221 | ||
222 | source "arch/arm/mach-integrator/Kconfig" | |
223 | ||
224 | source "arch/arm/mach-iop3xx/Kconfig" | |
225 | ||
226 | source "arch/arm/mach-ixp4xx/Kconfig" | |
227 | ||
228 | source "arch/arm/mach-ixp2000/Kconfig" | |
229 | ||
230 | source "arch/arm/mach-pxa/Kconfig" | |
231 | ||
232 | source "arch/arm/mach-sa1100/Kconfig" | |
233 | ||
d48af15e TL |
234 | source "arch/arm/plat-omap/Kconfig" |
235 | ||
236 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 237 | |
1dbae815 TL |
238 | source "arch/arm/mach-omap2/Kconfig" |
239 | ||
1da177e4 LT |
240 | source "arch/arm/mach-s3c2410/Kconfig" |
241 | ||
242 | source "arch/arm/mach-lh7a40x/Kconfig" | |
243 | ||
244 | source "arch/arm/mach-imx/Kconfig" | |
245 | ||
246 | source "arch/arm/mach-h720x/Kconfig" | |
247 | ||
248 | source "arch/arm/mach-versatile/Kconfig" | |
249 | ||
038c5b60 BN |
250 | source "arch/arm/mach-aaec2000/Kconfig" |
251 | ||
8ad68bbf CM |
252 | source "arch/arm/mach-realview/Kconfig" |
253 | ||
73a59c1c SP |
254 | source "arch/arm/mach-at91rm9200/Kconfig" |
255 | ||
1da177e4 LT |
256 | # Definitions to make life easier |
257 | config ARCH_ACORN | |
258 | bool | |
259 | ||
260 | source arch/arm/mm/Kconfig | |
261 | ||
262 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER | |
263 | config XSCALE_PMU | |
264 | bool | |
265 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
266 | default y | |
267 | ||
268 | endmenu | |
269 | ||
270 | source "arch/arm/common/Kconfig" | |
271 | ||
272 | config FORCE_MAX_ZONEORDER | |
273 | int | |
274 | depends on SA1111 | |
275 | default "9" | |
276 | ||
277 | menu "Bus support" | |
278 | ||
279 | config ARM_AMBA | |
280 | bool | |
281 | ||
282 | config ISA | |
283 | bool | |
1da177e4 LT |
284 | help |
285 | Find out whether you have ISA slots on your motherboard. ISA is the | |
286 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
287 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
288 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
289 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
290 | ||
065909b9 | 291 | # Select ISA DMA controller support |
1da177e4 LT |
292 | config ISA_DMA |
293 | bool | |
065909b9 | 294 | select ISA_DMA_API |
1da177e4 | 295 | |
065909b9 | 296 | # Select ISA DMA interface |
5cae841b AV |
297 | config ISA_DMA_API |
298 | bool | |
5cae841b | 299 | |
1da177e4 | 300 | config PCI |
c0da085a | 301 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB |
1da177e4 LT |
302 | help |
303 | Find out whether you have a PCI motherboard. PCI is the name of a | |
304 | bus system, i.e. the way the CPU talks to the other stuff inside | |
305 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
306 | VESA. If you have PCI, say Y, otherwise N. | |
307 | ||
308 | The PCI-HOWTO, available from | |
309 | <http://www.tldp.org/docs.html#howto>, contains valuable | |
310 | information about which PCI hardware does work under Linux and which | |
311 | doesn't. | |
312 | ||
313 | # Select the host bridge type | |
314 | config PCI_HOST_VIA82C505 | |
315 | bool | |
316 | depends on PCI && ARCH_SHARK | |
317 | default y | |
318 | ||
319 | source "drivers/pci/Kconfig" | |
320 | ||
321 | source "drivers/pcmcia/Kconfig" | |
322 | ||
323 | endmenu | |
324 | ||
325 | menu "Kernel Features" | |
326 | ||
327 | config SMP | |
328 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
f6db449c | 329 | depends on EXPERIMENTAL && REALVIEW_MPCORE |
1da177e4 LT |
330 | help |
331 | This enables support for systems with more than one CPU. If you have | |
332 | a system with only one CPU, like most personal computers, say N. If | |
333 | you have a system with more than one CPU, say Y. | |
334 | ||
335 | If you say N here, the kernel will run on single and multiprocessor | |
336 | machines, but will use only one CPU of a multiprocessor machine. If | |
337 | you say Y here, the kernel will run on many, but not all, single | |
338 | processor machines. On a single processor machine, the kernel will | |
339 | run faster if you say N here. | |
340 | ||
12c62c2e AO |
341 | See also the <file:Documentation/smp.txt>, |
342 | <file:Documentation/i386/IO-APIC.txt>, | |
1da177e4 LT |
343 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
344 | <http://www.linuxdoc.org/docs.html#howto>. | |
345 | ||
346 | If you don't know what to do here, say N. | |
347 | ||
348 | config NR_CPUS | |
349 | int "Maximum number of CPUs (2-32)" | |
350 | range 2 32 | |
351 | depends on SMP | |
352 | default "4" | |
353 | ||
a054a811 RK |
354 | config HOTPLUG_CPU |
355 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
356 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
357 | help | |
358 | Say Y here to experiment with turning CPUs off and on. CPUs | |
359 | can be controlled through /sys/devices/system/cpu. | |
360 | ||
37ee16ae RK |
361 | config LOCAL_TIMERS |
362 | bool "Use local timer interrupts" | |
2a98beb6 | 363 | depends on SMP && REALVIEW_MPCORE |
37ee16ae RK |
364 | default y |
365 | help | |
366 | Enable support for local timers on SMP platforms, rather then the | |
367 | legacy IPI broadcast method. Local timers allows the system | |
368 | accounting to be spread across the timer interval, preventing a | |
369 | "thundering herd" at every timer tick. | |
370 | ||
1da177e4 LT |
371 | config PREEMPT |
372 | bool "Preemptible Kernel (EXPERIMENTAL)" | |
373 | depends on EXPERIMENTAL | |
374 | help | |
375 | This option reduces the latency of the kernel when reacting to | |
376 | real-time or interactive events by allowing a low priority process to | |
377 | be preempted even if it is in kernel mode executing a system call. | |
378 | This allows applications to run more reliably even when the system is | |
379 | under load. | |
380 | ||
381 | Say Y here if you are building a kernel for a desktop, embedded | |
382 | or real-time system. Say N if you are unsure. | |
383 | ||
8749af68 RK |
384 | config NO_IDLE_HZ |
385 | bool "Dynamic tick timer" | |
386 | help | |
387 | Select this option if you want to disable continuous timer ticks | |
388 | and have them programmed to occur as required. This option saves | |
389 | power as the system can remain in idle state for longer. | |
390 | ||
391 | By default dynamic tick is disabled during the boot, and can be | |
392 | manually enabled with: | |
393 | ||
394 | echo 1 > /sys/devices/system/timer/timer0/dyn_tick | |
395 | ||
396 | Alternatively, if you want dynamic tick automatically enabled | |
397 | during boot, pass "dyntick=enable" via the kernel command string. | |
398 | ||
f2be64b3 TL |
399 | Please note that dynamic tick may affect the accuracy of |
400 | timekeeping on some platforms depending on the implementation. | |
569d2c34 NP |
401 | Currently at least OMAP, PXA2xx and SA11x0 platforms are known |
402 | to have accurate timekeeping with dynamic tick. | |
f2be64b3 | 403 | |
704bdda0 NP |
404 | config AEABI |
405 | bool "Use the ARM EABI to compile the kernel" | |
406 | help | |
407 | This option allows for the kernel to be compiled using the latest | |
408 | ARM ABI (aka EABI). This is only useful if you are using a user | |
409 | space environment that is also compiled with EABI. | |
410 | ||
411 | Since there are major incompatibilities between the legacy ABI and | |
412 | EABI, especially with regard to structure member alignment, this | |
413 | option also changes the kernel syscall calling convention to | |
414 | disambiguate both ABIs and allow for backward compatibility support | |
415 | (selected with CONFIG_OABI_COMPAT). | |
416 | ||
417 | To use this you need GCC version 4.0.0 or later. | |
418 | ||
6c90c872 NP |
419 | config OABI_COMPAT |
420 | bool "Allow old ABI binaries to run with this kernel" | |
421 | depends on AEABI | |
422 | default y | |
423 | help | |
424 | This option preserves the old syscall interface along with the | |
425 | new (ARM EABI) one. It also provides a compatibility layer to | |
426 | intercept syscalls that have structure arguments which layout | |
427 | in memory differs between the legacy ABI and the new ARM EABI | |
428 | (only for non "thumb" binaries). This option adds a tiny | |
429 | overhead to all syscalls and produces a slightly larger kernel. | |
430 | If you know you'll be using only pure EABI user space then you | |
431 | can say N here. If this option is not selected and you attempt | |
432 | to execute a legacy ABI binary then the result will be | |
433 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
434 | at all). If in doubt say Y. | |
435 | ||
3f22ab27 | 436 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 437 | bool |
f7e68bbf | 438 | default (ARCH_LH7A40X && !LH7A40X_CONTIGMEM) |
1da177e4 LT |
439 | help |
440 | Say Y to support efficient handling of discontiguous physical memory, | |
441 | for architectures which are either NUMA (Non-Uniform Memory Access) | |
442 | or have huge holes in the physical address space for other reasons. | |
443 | See <file:Documentation/vm/numa> for more. | |
444 | ||
3f22ab27 DH |
445 | source "mm/Kconfig" |
446 | ||
1da177e4 LT |
447 | config LEDS |
448 | bool "Timer and CPU usage LEDs" | |
449 | depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \ | |
450 | ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \ | |
451 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ | |
452 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c SP |
453 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
454 | ARCH_AT91RM9200 | |
1da177e4 LT |
455 | help |
456 | If you say Y here, the LEDs on your machine will be used | |
457 | to provide useful information about your current system status. | |
458 | ||
459 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
460 | be able to select which LEDs are active using the options below. If | |
461 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
462 | red LED will simply flash regularly to indicate that the system is | |
463 | still functional. It is safe to say Y here if you have a CATS | |
464 | system, but the driver will do nothing. | |
465 | ||
466 | config LEDS_TIMER | |
467 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
468 | MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
469 | depends on LEDS | |
470 | default y if ARCH_EBSA110 | |
471 | help | |
472 | If you say Y here, one of the system LEDs (the green one on the | |
473 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
474 | will flash regularly to indicate that the system is still | |
475 | operational. This is mainly useful to kernel hackers who are | |
476 | debugging unstable kernels. | |
477 | ||
478 | The LART uses the same LED for both Timer LED and CPU usage LED | |
479 | functions. You may choose to use both, but the Timer LED function | |
480 | will overrule the CPU usage LED. | |
481 | ||
482 | config LEDS_CPU | |
483 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
484 | !ARCH_OMAP) || MACH_OMAP_H2 || MACH_OMAP_PERSEUS2 | |
485 | depends on LEDS | |
486 | help | |
487 | If you say Y here, the red LED will be used to give a good real | |
488 | time indication of CPU usage, by lighting whenever the idle task | |
489 | is not currently executing. | |
490 | ||
491 | The LART uses the same LED for both Timer LED and CPU usage LED | |
492 | functions. You may choose to use both, but the Timer LED function | |
493 | will overrule the CPU usage LED. | |
494 | ||
495 | config ALIGNMENT_TRAP | |
496 | bool | |
497 | default y if !ARCH_EBSA110 | |
498 | help | |
499 | ARM processors can not fetch/store information which is not | |
500 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an | |
501 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
502 | fetch/store instructions will be emulated in software if you say | |
503 | here, which has a severe performance impact. This is necessary for | |
504 | correct operation of some network protocols. With an IP-only | |
505 | configuration it is safe to say N, otherwise say Y. | |
506 | ||
507 | endmenu | |
508 | ||
509 | menu "Boot options" | |
510 | ||
511 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
512 | # TEXT and BSS so we preserve their values in the config files. | |
513 | config ZBOOT_ROM_TEXT | |
514 | hex "Compressed ROM boot loader base address" | |
515 | default "0" | |
516 | help | |
517 | The physical address at which the ROM-able zImage is to be | |
518 | placed in the target. Platforms which normally make use of | |
519 | ROM-able zImage formats normally set this to a suitable | |
520 | value in their defconfig file. | |
521 | ||
522 | If ZBOOT_ROM is not enabled, this has no effect. | |
523 | ||
524 | config ZBOOT_ROM_BSS | |
525 | hex "Compressed ROM boot loader BSS address" | |
526 | default "0" | |
527 | help | |
528 | The base address of 64KiB of read/write memory in the target | |
529 | for the ROM-able zImage, which must be available while the | |
530 | decompressor is running. Platforms which normally make use of | |
531 | ROM-able zImage formats normally set this to a suitable | |
532 | value in their defconfig file. | |
533 | ||
534 | If ZBOOT_ROM is not enabled, this has no effect. | |
535 | ||
536 | config ZBOOT_ROM | |
537 | bool "Compressed boot loader in ROM/flash" | |
538 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
539 | help | |
540 | Say Y here if you intend to execute your compressed kernel image | |
541 | (zImage) directly from ROM or flash. If unsure, say N. | |
542 | ||
543 | config CMDLINE | |
544 | string "Default kernel command string" | |
545 | default "" | |
546 | help | |
547 | On some architectures (EBSA110 and CATS), there is currently no way | |
548 | for the boot loader to pass arguments to the kernel. For these | |
549 | architectures, you should supply some command-line options at build | |
550 | time by entering them here. As a minimum, you should specify the | |
551 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
552 | ||
553 | config XIP_KERNEL | |
554 | bool "Kernel Execute-In-Place from ROM" | |
555 | depends on !ZBOOT_ROM | |
556 | help | |
557 | Execute-In-Place allows the kernel to run from non-volatile storage | |
558 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
559 | space since the text section of the kernel is not loaded from flash | |
560 | to RAM. Read-write sections, such as the data section and stack, | |
561 | are still copied to RAM. The XIP kernel is not compressed since | |
562 | it has to run directly from flash, so it will take more space to | |
563 | store it. The flash address used to link the kernel object files, | |
564 | and for storing it, is configuration dependent. Therefore, if you | |
565 | say Y here, you must know the proper physical address where to | |
566 | store the kernel image depending on your own flash memory usage. | |
567 | ||
568 | Also note that the make target becomes "make xipImage" rather than | |
569 | "make zImage" or "make Image". The final kernel binary to put in | |
570 | ROM memory will be arch/arm/boot/xipImage. | |
571 | ||
572 | If unsure, say N. | |
573 | ||
574 | config XIP_PHYS_ADDR | |
575 | hex "XIP Kernel Physical Location" | |
576 | depends on XIP_KERNEL | |
577 | default "0x00080000" | |
578 | help | |
579 | This is the physical address in your flash memory the kernel will | |
580 | be linked for and stored to. This address is dependent on your | |
581 | own flash usage. | |
582 | ||
583 | endmenu | |
584 | ||
ec6bced6 | 585 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP1) |
1da177e4 LT |
586 | |
587 | menu "CPU Frequency scaling" | |
588 | ||
589 | source "drivers/cpufreq/Kconfig" | |
590 | ||
591 | config CPU_FREQ_SA1100 | |
592 | bool | |
07c6d48f | 593 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_H3800 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
594 | default y |
595 | ||
596 | config CPU_FREQ_SA1110 | |
597 | bool | |
598 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
599 | default y | |
600 | ||
601 | config CPU_FREQ_INTEGRATOR | |
602 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
603 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
604 | default y | |
605 | help | |
606 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
607 | ||
608 | For details, take a look at <file:Documentation/cpu-freq>. | |
609 | ||
610 | If in doubt, say Y. | |
611 | ||
612 | endmenu | |
613 | ||
614 | endif | |
615 | ||
616 | menu "Floating point emulation" | |
617 | ||
618 | comment "At least one emulation must be selected" | |
619 | ||
620 | config FPE_NWFPE | |
621 | bool "NWFPE math emulation" | |
8993a44c | 622 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
623 | ---help--- |
624 | Say Y to include the NWFPE floating point emulator in the kernel. | |
625 | This is necessary to run most binaries. Linux does not currently | |
626 | support floating point hardware so you need to say Y here even if | |
627 | your machine has an FPA or floating point co-processor podule. | |
628 | ||
629 | You may say N here if you are going to load the Acorn FPEmulator | |
630 | early in the bootup. | |
631 | ||
632 | config FPE_NWFPE_XP | |
633 | bool "Support extended precision" | |
bedf142b | 634 | depends on FPE_NWFPE |
1da177e4 LT |
635 | help |
636 | Say Y to include 80-bit support in the kernel floating-point | |
637 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
638 | Note that gcc does not generate 80-bit operations by default, | |
639 | so in most cases this option only enlarges the size of the | |
640 | floating point emulator without any good reason. | |
641 | ||
642 | You almost surely want to say N here. | |
643 | ||
644 | config FPE_FASTFPE | |
645 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 646 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
647 | ---help--- |
648 | Say Y here to include the FAST floating point emulator in the kernel. | |
649 | This is an experimental much faster emulator which now also has full | |
650 | precision for the mantissa. It does not support any exceptions. | |
651 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
652 | ||
653 | It should be sufficient for most programs. It may be not suitable | |
654 | for scientific calculations, but you have to check this for yourself. | |
655 | If you do not feel you need a faster FP emulation you should better | |
656 | choose NWFPE. | |
657 | ||
658 | config VFP | |
659 | bool "VFP-format floating point maths" | |
660 | depends on CPU_V6 || CPU_ARM926T | |
661 | help | |
662 | Say Y to include VFP support code in the kernel. This is needed | |
663 | if your hardware includes a VFP unit. | |
664 | ||
665 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
666 | release notes and additional status information. | |
667 | ||
668 | Say N if your target does not have VFP hardware. | |
669 | ||
670 | endmenu | |
671 | ||
672 | menu "Userspace binary formats" | |
673 | ||
674 | source "fs/Kconfig.binfmt" | |
675 | ||
676 | config ARTHUR | |
677 | tristate "RISC OS personality" | |
704bdda0 | 678 | depends on !AEABI |
1da177e4 LT |
679 | help |
680 | Say Y here to include the kernel code necessary if you want to run | |
681 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
682 | experimental; if this sounds frightening, say N and sleep in peace. | |
683 | You can also say M here to compile this support as a module (which | |
684 | will be called arthur). | |
685 | ||
686 | endmenu | |
687 | ||
688 | menu "Power management options" | |
689 | ||
eceab4ac | 690 | source "kernel/power/Kconfig" |
1da177e4 | 691 | |
1da177e4 LT |
692 | config APM |
693 | tristate "Advanced Power Management Emulation" | |
1da177e4 LT |
694 | ---help--- |
695 | APM is a BIOS specification for saving power using several different | |
696 | techniques. This is mostly useful for battery powered laptops with | |
697 | APM compliant BIOSes. If you say Y here, the system time will be | |
698 | reset after a RESUME operation, the /proc/apm device will provide | |
699 | battery status information, and user-space programs will receive | |
700 | notification of APM "events" (e.g. battery status change). | |
701 | ||
1da177e4 LT |
702 | In order to use APM, you will need supporting software. For location |
703 | and more information, read <file:Documentation/pm.txt> and the | |
704 | Battery Powered Linux mini-HOWTO, available from | |
705 | <http://www.tldp.org/docs.html#howto>. | |
706 | ||
707 | This driver does not spin down disk drives (see the hdparm(8) | |
708 | manpage ("man 8 hdparm") for that), and it doesn't turn off | |
709 | VESA-compliant "green" monitors. | |
710 | ||
1da177e4 LT |
711 | Generally, if you don't have a battery in your machine, there isn't |
712 | much point in using this driver and you should say N. If you get | |
713 | random kernel OOPSes or reboots that don't seem to be related to | |
714 | anything, try disabling/enabling this option (or disabling/enabling | |
715 | APM in your BIOS). | |
716 | ||
1da177e4 LT |
717 | endmenu |
718 | ||
d5950b43 SR |
719 | source "net/Kconfig" |
720 | ||
1da177e4 LT |
721 | menu "Device Drivers" |
722 | ||
723 | source "drivers/base/Kconfig" | |
724 | ||
c35bf4a5 PM |
725 | source "drivers/connector/Kconfig" |
726 | ||
1da177e4 LT |
727 | if ALIGNMENT_TRAP |
728 | source "drivers/mtd/Kconfig" | |
729 | endif | |
730 | ||
731 | source "drivers/parport/Kconfig" | |
732 | ||
733 | source "drivers/pnp/Kconfig" | |
734 | ||
735 | source "drivers/block/Kconfig" | |
736 | ||
737 | source "drivers/acorn/block/Kconfig" | |
738 | ||
bb011b8e DB |
739 | if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \ |
740 | || ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \ | |
d56c524a | 741 | || ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE |
1da177e4 LT |
742 | source "drivers/ide/Kconfig" |
743 | endif | |
744 | ||
745 | source "drivers/scsi/Kconfig" | |
746 | ||
747 | source "drivers/md/Kconfig" | |
748 | ||
749 | source "drivers/message/fusion/Kconfig" | |
750 | ||
751 | source "drivers/ieee1394/Kconfig" | |
752 | ||
753 | source "drivers/message/i2o/Kconfig" | |
754 | ||
d5950b43 | 755 | source "drivers/net/Kconfig" |
1da177e4 LT |
756 | |
757 | source "drivers/isdn/Kconfig" | |
758 | ||
759 | # input before char - char/joystick depends on it. As does USB. | |
760 | ||
761 | source "drivers/input/Kconfig" | |
762 | ||
763 | source "drivers/char/Kconfig" | |
764 | ||
765 | source "drivers/i2c/Kconfig" | |
766 | ||
8ae12a0d DB |
767 | source "drivers/spi/Kconfig" |
768 | ||
ad2f931d JD |
769 | source "drivers/hwmon/Kconfig" |
770 | ||
1da177e4 LT |
771 | #source "drivers/l3/Kconfig" |
772 | ||
773 | source "drivers/misc/Kconfig" | |
774 | ||
a4e137ab RK |
775 | source "drivers/mfd/Kconfig" |
776 | ||
1da177e4 LT |
777 | source "drivers/media/Kconfig" |
778 | ||
779 | source "drivers/video/Kconfig" | |
780 | ||
781 | source "sound/Kconfig" | |
782 | ||
783 | source "drivers/usb/Kconfig" | |
784 | ||
785 | source "drivers/mmc/Kconfig" | |
786 | ||
787 | endmenu | |
788 | ||
789 | source "fs/Kconfig" | |
790 | ||
791 | source "arch/arm/oprofile/Kconfig" | |
792 | ||
793 | source "arch/arm/Kconfig.debug" | |
794 | ||
795 | source "security/Kconfig" | |
796 | ||
797 | source "crypto/Kconfig" | |
798 | ||
799 | source "lib/Kconfig" |