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 | |
e17c6d56 | 11 | select HAVE_AOUT |
2064c946 | 12 | select HAVE_IDE |
12b824fb | 13 | select RTC_LIB |
75e7153a | 14 | select SYS_SUPPORTS_APM_EMULATION |
42d4b839 | 15 | select HAVE_OPROFILE |
5cbad0eb | 16 | select HAVE_ARCH_KGDB |
3f550096 | 17 | select HAVE_KPROBES if (!XIP_KERNEL) |
9edddaa2 | 18 | select HAVE_KRETPROBES if (HAVE_KPROBES) |
606576ce | 19 | select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) |
1fe53268 | 20 | select HAVE_GENERIC_DMA_COHERENT |
e7db7b42 AT |
21 | select HAVE_KERNEL_GZIP |
22 | select HAVE_KERNEL_LZO | |
1da177e4 LT |
23 | help |
24 | The ARM series is a line of low-power-consumption RISC chip designs | |
f6c8965a | 25 | licensed by ARM Ltd and targeted at embedded applications and |
1da177e4 | 26 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer |
f6c8965a | 27 | manufactured, but legacy ARM-based PC hardware remains popular in |
1da177e4 LT |
28 | Europe. There is an ARM Linux project with a web page at |
29 | <http://www.arm.linux.org.uk/>. | |
30 | ||
1a189b97 RK |
31 | config HAVE_PWM |
32 | bool | |
33 | ||
75e7153a RB |
34 | config SYS_SUPPORTS_APM_EMULATION |
35 | bool | |
36 | ||
0a938b97 DB |
37 | config GENERIC_GPIO |
38 | bool | |
0a938b97 | 39 | |
746140c7 KH |
40 | config GENERIC_TIME |
41 | bool | |
746140c7 | 42 | |
0567a0c0 KH |
43 | config GENERIC_CLOCKEVENTS |
44 | bool | |
0567a0c0 | 45 | |
a8655e83 CM |
46 | config GENERIC_CLOCKEVENTS_BROADCAST |
47 | bool | |
48 | depends on GENERIC_CLOCKEVENTS | |
49 | default y if SMP && !LOCAL_TIMERS | |
50 | ||
bc581770 LW |
51 | config HAVE_TCM |
52 | bool | |
53 | select GENERIC_ALLOCATOR | |
54 | ||
5ea81769 AV |
55 | config NO_IOPORT |
56 | bool | |
5ea81769 | 57 | |
1da177e4 LT |
58 | config EISA |
59 | bool | |
60 | ---help--- | |
61 | The Extended Industry Standard Architecture (EISA) bus was | |
62 | developed as an open alternative to the IBM MicroChannel bus. | |
63 | ||
64 | The EISA bus provided some of the features of the IBM MicroChannel | |
65 | bus while maintaining backward compatibility with cards made for | |
66 | the older ISA bus. The EISA bus saw limited use between 1988 and | |
67 | 1995 when it was made obsolete by the PCI bus. | |
68 | ||
69 | Say Y here if you are building a kernel for an EISA-based machine. | |
70 | ||
71 | Otherwise, say N. | |
72 | ||
73 | config SBUS | |
74 | bool | |
75 | ||
76 | config MCA | |
77 | bool | |
78 | help | |
79 | MicroChannel Architecture is found in some IBM PS/2 machines and | |
80 | laptops. It is a bus system similar to PCI or ISA. See | |
81 | <file:Documentation/mca.txt> (and especially the web page given | |
82 | there) before attempting to build an MCA bus kernel. | |
83 | ||
4a2581a0 TG |
84 | config GENERIC_HARDIRQS |
85 | bool | |
86 | default y | |
87 | ||
f16fb1ec RK |
88 | config STACKTRACE_SUPPORT |
89 | bool | |
90 | default y | |
91 | ||
f76e9154 NP |
92 | config HAVE_LATENCYTOP_SUPPORT |
93 | bool | |
94 | depends on !SMP | |
95 | default y | |
96 | ||
f16fb1ec RK |
97 | config LOCKDEP_SUPPORT |
98 | bool | |
99 | default y | |
100 | ||
7ad1bcb2 RK |
101 | config TRACE_IRQFLAGS_SUPPORT |
102 | bool | |
103 | default y | |
104 | ||
4a2581a0 TG |
105 | config HARDIRQS_SW_RESEND |
106 | bool | |
107 | default y | |
108 | ||
109 | config GENERIC_IRQ_PROBE | |
110 | bool | |
111 | default y | |
112 | ||
95c354fe NP |
113 | config GENERIC_LOCKBREAK |
114 | bool | |
115 | default y | |
116 | depends on SMP && PREEMPT | |
117 | ||
1da177e4 LT |
118 | config RWSEM_GENERIC_SPINLOCK |
119 | bool | |
120 | default y | |
121 | ||
122 | config RWSEM_XCHGADD_ALGORITHM | |
123 | bool | |
124 | ||
f0d1b0b3 DH |
125 | config ARCH_HAS_ILOG2_U32 |
126 | bool | |
f0d1b0b3 DH |
127 | |
128 | config ARCH_HAS_ILOG2_U64 | |
129 | bool | |
f0d1b0b3 | 130 | |
89c52ed4 BD |
131 | config ARCH_HAS_CPUFREQ |
132 | bool | |
133 | help | |
134 | Internal node to signify that the ARCH has CPUFREQ support | |
135 | and that the relevant menu configurations are displayed for | |
136 | it. | |
137 | ||
b89c3b16 AM |
138 | config GENERIC_HWEIGHT |
139 | bool | |
140 | default y | |
141 | ||
1da177e4 LT |
142 | config GENERIC_CALIBRATE_DELAY |
143 | bool | |
144 | default y | |
145 | ||
a08b6b79 Z |
146 | config ARCH_MAY_HAVE_PC_FDC |
147 | bool | |
148 | ||
5ac6da66 CL |
149 | config ZONE_DMA |
150 | bool | |
5ac6da66 | 151 | |
1da177e4 LT |
152 | config GENERIC_ISA_DMA |
153 | bool | |
154 | ||
1da177e4 LT |
155 | config FIQ |
156 | bool | |
157 | ||
034d2f5a AV |
158 | config ARCH_MTD_XIP |
159 | bool | |
160 | ||
60a752ef | 161 | config GENERIC_HARDIRQS_NO__DO_IRQ |
60a752ef PZ |
162 | def_bool y |
163 | ||
c0ffa3a9 MD |
164 | if OPROFILE |
165 | ||
166 | config OPROFILE_ARMV6 | |
167 | def_bool y | |
168 | depends on CPU_V6 && !SMP | |
169 | select OPROFILE_ARM11_CORE | |
170 | ||
171 | config OPROFILE_MPCORE | |
172 | def_bool y | |
173 | depends on CPU_V6 && SMP | |
174 | select OPROFILE_ARM11_CORE | |
175 | ||
176 | config OPROFILE_ARM11_CORE | |
177 | bool | |
178 | ||
d7ac4e28 JP |
179 | config OPROFILE_ARMV7 |
180 | def_bool y | |
181 | depends on CPU_V7 && !SMP | |
182 | bool | |
183 | ||
c0ffa3a9 MD |
184 | endif |
185 | ||
c760fc19 HC |
186 | config VECTORS_BASE |
187 | hex | |
6afd6fae | 188 | default 0xffff0000 if MMU || CPU_HIGH_VECTOR |
c760fc19 HC |
189 | default DRAM_BASE if REMAP_VECTORS_TO_RAM |
190 | default 0x00000000 | |
191 | help | |
192 | The base address of exception vectors. | |
193 | ||
1da177e4 LT |
194 | source "init/Kconfig" |
195 | ||
dc52ddc0 MH |
196 | source "kernel/Kconfig.freezer" |
197 | ||
1da177e4 LT |
198 | menu "System Type" |
199 | ||
3c427975 HC |
200 | config MMU |
201 | bool "MMU-based Paged Memory Management Support" | |
202 | default y | |
203 | help | |
204 | Select if you want MMU-based virtualised addressing space | |
205 | support by paged memory management. If unsure, say 'Y'. | |
206 | ||
1da177e4 LT |
207 | choice |
208 | prompt "ARM system type" | |
6a0e2430 | 209 | default ARCH_VERSATILE |
1da177e4 | 210 | |
4af6fee1 DS |
211 | config ARCH_AAEC2000 |
212 | bool "Agilent AAEC-2000 based" | |
c750815e | 213 | select CPU_ARM920T |
4af6fee1 | 214 | select ARM_AMBA |
9483a578 | 215 | select HAVE_CLK |
4af6fee1 DS |
216 | help |
217 | This enables support for systems based on the Agilent AAEC-2000 | |
218 | ||
219 | config ARCH_INTEGRATOR | |
220 | bool "ARM Ltd. Integrator family" | |
221 | select ARM_AMBA | |
89c52ed4 | 222 | select ARCH_HAS_CPUFREQ |
9483a578 | 223 | select HAVE_CLK |
d72fbdf0 | 224 | select COMMON_CLKDEV |
4af6fee1 DS |
225 | select ICST525 |
226 | help | |
227 | Support for ARM's Integrator platform. | |
228 | ||
229 | config ARCH_REALVIEW | |
230 | bool "ARM Ltd. RealView family" | |
231 | select ARM_AMBA | |
9483a578 | 232 | select HAVE_CLK |
cf30fb4a | 233 | select COMMON_CLKDEV |
4af6fee1 | 234 | select ICST307 |
85802afe | 235 | select GENERIC_TIME |
ae30ceac | 236 | select GENERIC_CLOCKEVENTS |
eb7fffa3 | 237 | select ARCH_WANT_OPTIONAL_GPIOLIB |
4af6fee1 DS |
238 | help |
239 | This enables support for ARM Ltd RealView boards. | |
240 | ||
241 | config ARCH_VERSATILE | |
242 | bool "ARM Ltd. Versatile family" | |
243 | select ARM_AMBA | |
244 | select ARM_VIC | |
9483a578 | 245 | select HAVE_CLK |
71a06da0 | 246 | select COMMON_CLKDEV |
4af6fee1 | 247 | select ICST307 |
b49c87c2 | 248 | select GENERIC_TIME |
89df1272 | 249 | select GENERIC_CLOCKEVENTS |
bbeddc43 | 250 | select ARCH_WANT_OPTIONAL_GPIOLIB |
4af6fee1 DS |
251 | help |
252 | This enables support for ARM Ltd Versatile board. | |
253 | ||
8fc5ffa0 AV |
254 | config ARCH_AT91 |
255 | bool "Atmel AT91" | |
0a938b97 | 256 | select GENERIC_GPIO |
f373e8c0 | 257 | select ARCH_REQUIRE_GPIOLIB |
93686ae8 | 258 | select HAVE_CLK |
4af6fee1 | 259 | help |
2b3b3516 AV |
260 | This enables support for systems based on the Atmel AT91RM9200, |
261 | AT91SAM9 and AT91CAP9 processors. | |
4af6fee1 | 262 | |
1da177e4 | 263 | config ARCH_CLPS711X |
4af6fee1 | 264 | bool "Cirrus Logic CLPS711x/EP721x-based" |
c750815e | 265 | select CPU_ARM720T |
f999b8bd MM |
266 | help |
267 | Support for Cirrus Logic 711x/721x based boards. | |
1da177e4 | 268 | |
788c9700 RK |
269 | config ARCH_GEMINI |
270 | bool "Cortina Systems Gemini" | |
271 | select CPU_FA526 | |
272 | select GENERIC_GPIO | |
273 | select ARCH_REQUIRE_GPIOLIB | |
274 | help | |
275 | Support for the Cortina Systems Gemini family SoCs | |
276 | ||
1da177e4 LT |
277 | config ARCH_EBSA110 |
278 | bool "EBSA-110" | |
c750815e | 279 | select CPU_SA110 |
f7e68bbf | 280 | select ISA |
c5eb2a2b | 281 | select NO_IOPORT |
1da177e4 LT |
282 | help |
283 | This is an evaluation board for the StrongARM processor available | |
f6c8965a | 284 | from Digital. It has limited hardware on-board, including an |
1da177e4 LT |
285 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
286 | parallel port. | |
287 | ||
e7736d47 LB |
288 | config ARCH_EP93XX |
289 | bool "EP93xx-based" | |
c750815e | 290 | select CPU_ARM920T |
e7736d47 LB |
291 | select ARM_AMBA |
292 | select ARM_VIC | |
4e9f9fd5 | 293 | select GENERIC_GPIO |
9483a578 | 294 | select HAVE_CLK |
ae696fd5 | 295 | select COMMON_CLKDEV |
7444a72e | 296 | select ARCH_REQUIRE_GPIOLIB |
eb33575c | 297 | select ARCH_HAS_HOLES_MEMORYMODEL |
e7736d47 LB |
298 | help |
299 | This enables support for the Cirrus EP93xx series of CPUs. | |
300 | ||
1da177e4 LT |
301 | config ARCH_FOOTBRIDGE |
302 | bool "FootBridge" | |
c750815e | 303 | select CPU_SA110 |
1da177e4 | 304 | select FOOTBRIDGE |
f999b8bd MM |
305 | help |
306 | Support for systems based on the DC21285 companion chip | |
307 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
1da177e4 | 308 | |
788c9700 RK |
309 | config ARCH_MXC |
310 | bool "Freescale MXC/iMX-based" | |
311 | select GENERIC_TIME | |
312 | select GENERIC_CLOCKEVENTS | |
788c9700 | 313 | select ARCH_REQUIRE_GPIOLIB |
a2ab67fa | 314 | select HAVE_CLK |
03e09cd8 | 315 | select COMMON_CLKDEV |
788c9700 RK |
316 | help |
317 | Support for Freescale MXC/iMX-based family of processors | |
318 | ||
7bd0f2f5 | 319 | config ARCH_STMP3XXX |
320 | bool "Freescale STMP3xxx" | |
321 | select CPU_ARM926T | |
322 | select HAVE_CLK | |
323 | select COMMON_CLKDEV | |
324 | select ARCH_REQUIRE_GPIOLIB | |
325 | select GENERIC_TIME | |
326 | select GENERIC_CLOCKEVENTS | |
327 | select GENERIC_GPIO | |
328 | select USB_ARCH_HAS_EHCI | |
329 | help | |
330 | Support for systems based on the Freescale 3xxx CPUs. | |
331 | ||
4af6fee1 DS |
332 | config ARCH_NETX |
333 | bool "Hilscher NetX based" | |
c750815e | 334 | select CPU_ARM926T |
4af6fee1 | 335 | select ARM_VIC |
2fcfe6b8 | 336 | select GENERIC_CLOCKEVENTS |
21edecd3 | 337 | select GENERIC_TIME |
f999b8bd | 338 | help |
4af6fee1 DS |
339 | This enables support for systems based on the Hilscher NetX Soc |
340 | ||
341 | config ARCH_H720X | |
342 | bool "Hynix HMS720x-based" | |
c750815e | 343 | select CPU_ARM720T |
4af6fee1 DS |
344 | select ISA_DMA_API |
345 | help | |
346 | This enables support for systems based on the Hynix HMS720x | |
347 | ||
28ad94ec AR |
348 | config ARCH_NOMADIK |
349 | bool "STMicroelectronics Nomadik" | |
350 | select ARM_AMBA | |
351 | select ARM_VIC | |
352 | select CPU_ARM926T | |
353 | select HAVE_CLK | |
354 | select COMMON_CLKDEV | |
355 | select GENERIC_TIME | |
356 | select GENERIC_CLOCKEVENTS | |
2ec1d359 AR |
357 | select GENERIC_GPIO |
358 | select ARCH_REQUIRE_GPIOLIB | |
28ad94ec AR |
359 | help |
360 | Support for the Nomadik platform by ST-Ericsson | |
361 | ||
3b938be6 RK |
362 | config ARCH_IOP13XX |
363 | bool "IOP13xx-based" | |
364 | depends on MMU | |
c750815e | 365 | select CPU_XSC3 |
3b938be6 RK |
366 | select PLAT_IOP |
367 | select PCI | |
368 | select ARCH_SUPPORTS_MSI | |
8d5796d2 | 369 | select VMSPLIT_1G |
3b938be6 RK |
370 | help |
371 | Support for Intel's IOP13XX (XScale) family of processors. | |
372 | ||
3f7e5815 LB |
373 | config ARCH_IOP32X |
374 | bool "IOP32x-based" | |
a4f7e763 | 375 | depends on MMU |
c750815e | 376 | select CPU_XSCALE |
7ae1f7ec | 377 | select PLAT_IOP |
f7e68bbf | 378 | select PCI |
63f385cd | 379 | select GENERIC_GPIO |
bb2b180c | 380 | select ARCH_REQUIRE_GPIOLIB |
f999b8bd | 381 | help |
3f7e5815 LB |
382 | Support for Intel's 80219 and IOP32X (XScale) family of |
383 | processors. | |
384 | ||
385 | config ARCH_IOP33X | |
386 | bool "IOP33x-based" | |
387 | depends on MMU | |
c750815e | 388 | select CPU_XSCALE |
7ae1f7ec | 389 | select PLAT_IOP |
3f7e5815 | 390 | select PCI |
63f385cd | 391 | select GENERIC_GPIO |
bb2b180c | 392 | select ARCH_REQUIRE_GPIOLIB |
3f7e5815 LB |
393 | help |
394 | Support for Intel's IOP33X (XScale) family of processors. | |
1da177e4 | 395 | |
3b938be6 RK |
396 | config ARCH_IXP23XX |
397 | bool "IXP23XX-based" | |
a4f7e763 | 398 | depends on MMU |
c750815e | 399 | select CPU_XSC3 |
3b938be6 | 400 | select PCI |
f999b8bd | 401 | help |
3b938be6 | 402 | Support for Intel's IXP23xx (XScale) family of processors. |
1da177e4 LT |
403 | |
404 | config ARCH_IXP2000 | |
405 | bool "IXP2400/2800-based" | |
a4f7e763 | 406 | depends on MMU |
c750815e | 407 | select CPU_XSCALE |
f7e68bbf | 408 | select PCI |
f999b8bd MM |
409 | help |
410 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
1da177e4 | 411 | |
3b938be6 RK |
412 | config ARCH_IXP4XX |
413 | bool "IXP4xx-based" | |
a4f7e763 | 414 | depends on MMU |
c750815e | 415 | select CPU_XSCALE |
8858e9af | 416 | select GENERIC_GPIO |
3b938be6 RK |
417 | select GENERIC_TIME |
418 | select GENERIC_CLOCKEVENTS | |
485bdde7 | 419 | select DMABOUNCE if PCI |
c4713074 | 420 | help |
3b938be6 | 421 | Support for Intel's IXP4XX (XScale) family of processors. |
c4713074 | 422 | |
1da177e4 LT |
423 | config ARCH_L7200 |
424 | bool "LinkUp-L7200" | |
c750815e | 425 | select CPU_ARM720T |
1da177e4 LT |
426 | select FIQ |
427 | help | |
428 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
429 | L7200 Software Development Board which uses an ARM720T processor. | |
430 | Information on this board can be obtained at: | |
431 | ||
432 | <http://www.linkupsys.com/> | |
433 | ||
434 | If you have any questions or comments about the Linux kernel port | |
435 | to this board, send e-mail to <sjhill@cotw.com>. | |
436 | ||
edabd38e SB |
437 | config ARCH_DOVE |
438 | bool "Marvell Dove" | |
439 | select PCI | |
440 | select GENERIC_GPIO | |
441 | select ARCH_REQUIRE_GPIOLIB | |
442 | select GENERIC_TIME | |
443 | select GENERIC_CLOCKEVENTS | |
444 | select PLAT_ORION | |
445 | help | |
446 | Support for the Marvell Dove SoC 88AP510 | |
447 | ||
651c74c7 SB |
448 | config ARCH_KIRKWOOD |
449 | bool "Marvell Kirkwood" | |
c750815e | 450 | select CPU_FEROCEON |
651c74c7 | 451 | select PCI |
4c213430 | 452 | select GENERIC_GPIO |
a8865655 | 453 | select ARCH_REQUIRE_GPIOLIB |
651c74c7 SB |
454 | select GENERIC_TIME |
455 | select GENERIC_CLOCKEVENTS | |
456 | select PLAT_ORION | |
457 | help | |
458 | Support for the following Marvell Kirkwood series SoCs: | |
459 | 88F6180, 88F6192 and 88F6281. | |
460 | ||
777f9beb LB |
461 | config ARCH_LOKI |
462 | bool "Marvell Loki (88RC8480)" | |
c750815e | 463 | select CPU_FEROCEON |
777f9beb LB |
464 | select GENERIC_TIME |
465 | select GENERIC_CLOCKEVENTS | |
466 | select PLAT_ORION | |
467 | help | |
468 | Support for the Marvell Loki (88RC8480) SoC. | |
469 | ||
794d15b2 SS |
470 | config ARCH_MV78XX0 |
471 | bool "Marvell MV78xx0" | |
c750815e | 472 | select CPU_FEROCEON |
794d15b2 | 473 | select PCI |
b95a13d7 | 474 | select GENERIC_GPIO |
a8865655 | 475 | select ARCH_REQUIRE_GPIOLIB |
794d15b2 SS |
476 | select GENERIC_TIME |
477 | select GENERIC_CLOCKEVENTS | |
478 | select PLAT_ORION | |
479 | help | |
480 | Support for the following Marvell MV78xx0 series SoCs: | |
481 | MV781x0, MV782x0. | |
482 | ||
9dd0b194 | 483 | config ARCH_ORION5X |
585cf175 TP |
484 | bool "Marvell Orion" |
485 | depends on MMU | |
c750815e | 486 | select CPU_FEROCEON |
038ee083 | 487 | select PCI |
01af72e4 | 488 | select GENERIC_GPIO |
a8865655 | 489 | select ARCH_REQUIRE_GPIOLIB |
51cbff1d TP |
490 | select GENERIC_TIME |
491 | select GENERIC_CLOCKEVENTS | |
69b02f6a | 492 | select PLAT_ORION |
585cf175 | 493 | help |
9dd0b194 | 494 | Support for the following Marvell Orion 5x series SoCs: |
d2b2a6bb | 495 | Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), |
d323ade1 | 496 | Orion-2 (5281), Orion-1-90 (6183). |
585cf175 | 497 | |
788c9700 | 498 | config ARCH_MMP |
2f7e8fae | 499 | bool "Marvell PXA168/910/MMP2" |
788c9700 RK |
500 | depends on MMU |
501 | select GENERIC_GPIO | |
502 | select ARCH_REQUIRE_GPIOLIB | |
503 | select HAVE_CLK | |
504 | select COMMON_CLKDEV | |
505 | select GENERIC_TIME | |
506 | select GENERIC_CLOCKEVENTS | |
507 | select TICK_ONESHOT | |
508 | select PLAT_PXA | |
509 | help | |
2f7e8fae | 510 | Support for Marvell's PXA168/PXA910(MMP) and MMP2 processor line. |
788c9700 RK |
511 | |
512 | config ARCH_KS8695 | |
513 | bool "Micrel/Kendin KS8695" | |
514 | select CPU_ARM922T | |
515 | select GENERIC_GPIO | |
516 | select ARCH_REQUIRE_GPIOLIB | |
517 | help | |
518 | Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based | |
519 | System-on-Chip devices. | |
520 | ||
521 | config ARCH_NS9XXX | |
522 | bool "NetSilicon NS9xxx" | |
523 | select CPU_ARM926T | |
524 | select GENERIC_GPIO | |
525 | select GENERIC_TIME | |
526 | select GENERIC_CLOCKEVENTS | |
527 | select HAVE_CLK | |
528 | help | |
529 | Say Y here if you intend to run this kernel on a NetSilicon NS9xxx | |
530 | System. | |
531 | ||
532 | <http://www.digi.com/products/microprocessors/index.jsp> | |
533 | ||
534 | config ARCH_W90X900 | |
535 | bool "Nuvoton W90X900 CPU" | |
536 | select CPU_ARM926T | |
c52d3d68 | 537 | select ARCH_REQUIRE_GPIOLIB |
538 | select GENERIC_GPIO | |
d2c24195 | 539 | select HAVE_CLK |
0e4a34bb | 540 | select COMMON_CLKDEV |
58b5369e | 541 | select GENERIC_TIME |
542 | select GENERIC_CLOCKEVENTS | |
788c9700 | 543 | help |
a8bc4ead | 544 | Support for Nuvoton (Winbond logic dept.) ARM9 processor, |
545 | At present, the w90x900 has been renamed nuc900, regarding | |
546 | the ARM series product line, you can login the following | |
547 | link address to know more. | |
548 | ||
549 | <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/ | |
550 | ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller> | |
788c9700 | 551 | |
4af6fee1 DS |
552 | config ARCH_PNX4008 |
553 | bool "Philips Nexperia PNX4008 Mobile" | |
c750815e | 554 | select CPU_ARM926T |
9483a578 | 555 | select HAVE_CLK |
4af6fee1 DS |
556 | help |
557 | This enables support for Philips PNX4008 mobile platform. | |
558 | ||
1da177e4 | 559 | config ARCH_PXA |
2c8086a5 | 560 | bool "PXA2xx/PXA3xx-based" |
a4f7e763 | 561 | depends on MMU |
034d2f5a | 562 | select ARCH_MTD_XIP |
89c52ed4 | 563 | select ARCH_HAS_CPUFREQ |
0a938b97 | 564 | select GENERIC_GPIO |
9483a578 | 565 | select HAVE_CLK |
8c3abc7d | 566 | select COMMON_CLKDEV |
7444a72e | 567 | select ARCH_REQUIRE_GPIOLIB |
45cf5eef | 568 | select GENERIC_TIME |
981d0f39 | 569 | select GENERIC_CLOCKEVENTS |
a88264c2 | 570 | select TICK_ONESHOT |
bd5ce433 | 571 | select PLAT_PXA |
f999b8bd | 572 | help |
2c8086a5 | 573 | Support for Intel/Marvell's PXA2xx/PXA3xx processor line. |
1da177e4 | 574 | |
788c9700 RK |
575 | config ARCH_MSM |
576 | bool "Qualcomm MSM" | |
577 | select CPU_V6 | |
49cbe786 EM |
578 | select GENERIC_TIME |
579 | select GENERIC_CLOCKEVENTS | |
49cbe786 | 580 | help |
788c9700 RK |
581 | Support for Qualcomm MSM7K based systems. This runs on the ARM11 |
582 | apps processor of the MSM7K and depends on a shared memory | |
583 | interface to the ARM9 modem processor which runs the baseband stack | |
584 | and controls some vital subsystems (clock and power control, etc). | |
49cbe786 | 585 | |
c793c1b0 MD |
586 | config ARCH_SHMOBILE |
587 | bool "Renesas SH-Mobile" | |
588 | help | |
589 | Support for Renesas's SH-Mobile ARM platforms | |
590 | ||
1da177e4 LT |
591 | config ARCH_RPC |
592 | bool "RiscPC" | |
593 | select ARCH_ACORN | |
594 | select FIQ | |
595 | select TIMER_ACORN | |
a08b6b79 | 596 | select ARCH_MAY_HAVE_PC_FDC |
341eb781 | 597 | select HAVE_PATA_PLATFORM |
065909b9 | 598 | select ISA_DMA_API |
5ea81769 | 599 | select NO_IOPORT |
07f841b7 | 600 | select ARCH_SPARSEMEM_ENABLE |
1da177e4 LT |
601 | help |
602 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
603 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
604 | ||
605 | config ARCH_SA1100 | |
606 | bool "SA1100-based" | |
c750815e | 607 | select CPU_SA1100 |
f7e68bbf | 608 | select ISA |
05944d74 | 609 | select ARCH_SPARSEMEM_ENABLE |
034d2f5a | 610 | select ARCH_MTD_XIP |
89c52ed4 | 611 | select ARCH_HAS_CPUFREQ |
1937f5b9 | 612 | select CPU_FREQ |
0a938b97 | 613 | select GENERIC_GPIO |
d142b6e7 | 614 | select GENERIC_TIME |
3e238be2 | 615 | select GENERIC_CLOCKEVENTS |
9483a578 | 616 | select HAVE_CLK |
3e238be2 | 617 | select TICK_ONESHOT |
7444a72e | 618 | select ARCH_REQUIRE_GPIOLIB |
f999b8bd MM |
619 | help |
620 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
621 | |
622 | config ARCH_S3C2410 | |
e4d06e39 | 623 | bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" |
0a938b97 | 624 | select GENERIC_GPIO |
9d56c02a | 625 | select ARCH_HAS_CPUFREQ |
9483a578 | 626 | select HAVE_CLK |
1da177e4 LT |
627 | help |
628 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
629 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 630 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 | 631 | |
a08ab637 BD |
632 | config ARCH_S3C64XX |
633 | bool "Samsung S3C64XX" | |
634 | select GENERIC_GPIO | |
635 | select HAVE_CLK | |
89c52ed4 | 636 | select ARCH_HAS_CPUFREQ |
a08ab637 BD |
637 | help |
638 | Samsung S3C64XX series based systems | |
639 | ||
c4ffccdd KK |
640 | config ARCH_S5P6440 |
641 | bool "Samsung S5P6440" | |
642 | select CPU_V6 | |
643 | select GENERIC_GPIO | |
644 | select HAVE_CLK | |
645 | help | |
646 | Samsung S5P6440 CPU based systems | |
647 | ||
5a7652f2 BM |
648 | config ARCH_S5PC1XX |
649 | bool "Samsung S5PC1XX" | |
650 | select GENERIC_GPIO | |
651 | select HAVE_CLK | |
652 | select CPU_V7 | |
653 | help | |
654 | Samsung S5PC1XX series based systems | |
655 | ||
1da177e4 LT |
656 | config ARCH_SHARK |
657 | bool "Shark" | |
c750815e | 658 | select CPU_SA110 |
f7e68bbf RK |
659 | select ISA |
660 | select ISA_DMA | |
3bca103a | 661 | select ZONE_DMA |
f7e68bbf | 662 | select PCI |
f999b8bd MM |
663 | help |
664 | Support for the StrongARM based Digital DNARD machine, also known | |
665 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
666 | |
667 | config ARCH_LH7A40X | |
668 | bool "Sharp LH7A40X" | |
c750815e | 669 | select CPU_ARM922T |
4ba3f7c5 RK |
670 | select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM |
671 | select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM | |
1da177e4 LT |
672 | help |
673 | Say Y here for systems based on one of the Sharp LH7A40X | |
674 | System on a Chip processors. These CPUs include an ARM922T | |
675 | core with a wide array of integrated devices for | |
676 | hand-held and low-power applications. | |
677 | ||
d98aac75 LW |
678 | config ARCH_U300 |
679 | bool "ST-Ericsson U300 Series" | |
680 | depends on MMU | |
681 | select CPU_ARM926T | |
bc581770 | 682 | select HAVE_TCM |
d98aac75 LW |
683 | select ARM_AMBA |
684 | select ARM_VIC | |
685 | select GENERIC_TIME | |
686 | select GENERIC_CLOCKEVENTS | |
687 | select HAVE_CLK | |
688 | select COMMON_CLKDEV | |
689 | select GENERIC_GPIO | |
690 | help | |
691 | Support for ST-Ericsson U300 series mobile platforms. | |
692 | ||
7c6337e2 KH |
693 | config ARCH_DAVINCI |
694 | bool "TI DaVinci" | |
c750815e | 695 | select CPU_ARM926T |
7c6337e2 KH |
696 | select GENERIC_TIME |
697 | select GENERIC_CLOCKEVENTS | |
3d9edf09 | 698 | select GENERIC_GPIO |
dce1115b | 699 | select ARCH_REQUIRE_GPIOLIB |
9483a578 | 700 | select HAVE_CLK |
3bca103a | 701 | select ZONE_DMA |
9232fcc9 | 702 | select HAVE_IDE |
c5b736d0 | 703 | select COMMON_CLKDEV |
20e9969b | 704 | select GENERIC_ALLOCATOR |
ae88e05a | 705 | select ARCH_HAS_HOLES_MEMORYMODEL |
7c6337e2 KH |
706 | help |
707 | Support for TI's DaVinci platform. | |
708 | ||
3b938be6 RK |
709 | config ARCH_OMAP |
710 | bool "TI OMAP" | |
711 | select GENERIC_GPIO | |
9483a578 | 712 | select HAVE_CLK |
7444a72e | 713 | select ARCH_REQUIRE_GPIOLIB |
89c52ed4 | 714 | select ARCH_HAS_CPUFREQ |
3b938be6 | 715 | select GENERIC_TIME |
06cad098 | 716 | select GENERIC_CLOCKEVENTS |
9af915da | 717 | select ARCH_HAS_HOLES_MEMORYMODEL |
3b938be6 RK |
718 | help |
719 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
720 | ||
6288e28d LC |
721 | config ARCH_BCMRING |
722 | bool "Broadcom BCMRING" | |
723 | depends on MMU | |
724 | select CPU_V6 | |
725 | select ARM_AMBA | |
726 | select COMMON_CLKDEV | |
727 | select GENERIC_TIME | |
728 | select GENERIC_CLOCKEVENTS | |
729 | select ARCH_WANT_OPTIONAL_GPIOLIB | |
730 | help | |
731 | Support for Broadcom's BCMRing platform. | |
732 | ||
850265e8 SK |
733 | config ARCH_U8500 |
734 | bool "ST-Ericsson U8500 Series" | |
735 | select CPU_V7 | |
736 | select ARM_AMBA | |
737 | select GENERIC_TIME | |
738 | select GENERIC_CLOCKEVENTS | |
739 | select COMMON_CLKDEV | |
740 | help | |
741 | Support for ST-Ericsson's Ux500 architecture | |
742 | ||
1da177e4 LT |
743 | endchoice |
744 | ||
95b8f20f RK |
745 | source "arch/arm/mach-aaec2000/Kconfig" |
746 | ||
747 | source "arch/arm/mach-at91/Kconfig" | |
748 | ||
749 | source "arch/arm/mach-bcmring/Kconfig" | |
750 | ||
1da177e4 LT |
751 | source "arch/arm/mach-clps711x/Kconfig" |
752 | ||
95b8f20f RK |
753 | source "arch/arm/mach-davinci/Kconfig" |
754 | ||
755 | source "arch/arm/mach-dove/Kconfig" | |
756 | ||
e7736d47 LB |
757 | source "arch/arm/mach-ep93xx/Kconfig" |
758 | ||
1da177e4 LT |
759 | source "arch/arm/mach-footbridge/Kconfig" |
760 | ||
59d3a193 PZ |
761 | source "arch/arm/mach-gemini/Kconfig" |
762 | ||
95b8f20f RK |
763 | source "arch/arm/mach-h720x/Kconfig" |
764 | ||
1da177e4 LT |
765 | source "arch/arm/mach-integrator/Kconfig" |
766 | ||
3f7e5815 LB |
767 | source "arch/arm/mach-iop32x/Kconfig" |
768 | ||
769 | source "arch/arm/mach-iop33x/Kconfig" | |
1da177e4 | 770 | |
285f5fa7 DW |
771 | source "arch/arm/mach-iop13xx/Kconfig" |
772 | ||
1da177e4 LT |
773 | source "arch/arm/mach-ixp4xx/Kconfig" |
774 | ||
775 | source "arch/arm/mach-ixp2000/Kconfig" | |
776 | ||
c4713074 LB |
777 | source "arch/arm/mach-ixp23xx/Kconfig" |
778 | ||
95b8f20f RK |
779 | source "arch/arm/mach-kirkwood/Kconfig" |
780 | ||
781 | source "arch/arm/mach-ks8695/Kconfig" | |
782 | ||
783 | source "arch/arm/mach-lh7a40x/Kconfig" | |
784 | ||
777f9beb LB |
785 | source "arch/arm/mach-loki/Kconfig" |
786 | ||
95b8f20f RK |
787 | source "arch/arm/mach-msm/Kconfig" |
788 | ||
794d15b2 SS |
789 | source "arch/arm/mach-mv78xx0/Kconfig" |
790 | ||
95b8f20f | 791 | source "arch/arm/plat-mxc/Kconfig" |
1da177e4 | 792 | |
95b8f20f | 793 | source "arch/arm/mach-netx/Kconfig" |
49cbe786 | 794 | |
95b8f20f RK |
795 | source "arch/arm/mach-nomadik/Kconfig" |
796 | source "arch/arm/plat-nomadik/Kconfig" | |
797 | ||
798 | source "arch/arm/mach-ns9xxx/Kconfig" | |
1da177e4 | 799 | |
d48af15e TL |
800 | source "arch/arm/plat-omap/Kconfig" |
801 | ||
802 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 803 | |
1dbae815 TL |
804 | source "arch/arm/mach-omap2/Kconfig" |
805 | ||
9dd0b194 | 806 | source "arch/arm/mach-orion5x/Kconfig" |
585cf175 | 807 | |
95b8f20f RK |
808 | source "arch/arm/mach-pxa/Kconfig" |
809 | source "arch/arm/plat-pxa/Kconfig" | |
585cf175 | 810 | |
95b8f20f RK |
811 | source "arch/arm/mach-mmp/Kconfig" |
812 | ||
813 | source "arch/arm/mach-realview/Kconfig" | |
814 | ||
815 | source "arch/arm/mach-sa1100/Kconfig" | |
edabd38e | 816 | |
cf383678 | 817 | source "arch/arm/plat-samsung/Kconfig" |
a21765a7 | 818 | source "arch/arm/plat-s3c24xx/Kconfig" |
a08ab637 | 819 | source "arch/arm/plat-s3c64xx/Kconfig" |
d58153d8 | 820 | source "arch/arm/plat-s3c/Kconfig" |
c4ffccdd | 821 | source "arch/arm/plat-s5p/Kconfig" |
5a7652f2 | 822 | source "arch/arm/plat-s5pc1xx/Kconfig" |
a21765a7 BD |
823 | |
824 | if ARCH_S3C2410 | |
825 | source "arch/arm/mach-s3c2400/Kconfig" | |
1da177e4 | 826 | source "arch/arm/mach-s3c2410/Kconfig" |
a21765a7 BD |
827 | source "arch/arm/mach-s3c2412/Kconfig" |
828 | source "arch/arm/mach-s3c2440/Kconfig" | |
829 | source "arch/arm/mach-s3c2442/Kconfig" | |
e4d06e39 | 830 | source "arch/arm/mach-s3c2443/Kconfig" |
a21765a7 | 831 | endif |
1da177e4 | 832 | |
a08ab637 BD |
833 | if ARCH_S3C64XX |
834 | source "arch/arm/mach-s3c6400/Kconfig" | |
835 | source "arch/arm/mach-s3c6410/Kconfig" | |
836 | endif | |
837 | ||
c4ffccdd KK |
838 | source "arch/arm/mach-s5p6440/Kconfig" |
839 | ||
c793c1b0 MD |
840 | source "arch/arm/mach-shmobile/Kconfig" |
841 | ||
7bd0f2f5 | 842 | source "arch/arm/plat-stmp3xxx/Kconfig" |
843 | ||
5a7652f2 BM |
844 | if ARCH_S5PC1XX |
845 | source "arch/arm/mach-s5pc100/Kconfig" | |
846 | endif | |
847 | ||
95b8f20f | 848 | source "arch/arm/mach-u300/Kconfig" |
1da177e4 | 849 | |
95b8f20f | 850 | source "arch/arm/mach-ux500/Kconfig" |
1da177e4 LT |
851 | |
852 | source "arch/arm/mach-versatile/Kconfig" | |
853 | ||
7ec80ddf | 854 | source "arch/arm/mach-w90x900/Kconfig" |
855 | ||
1da177e4 LT |
856 | # Definitions to make life easier |
857 | config ARCH_ACORN | |
858 | bool | |
859 | ||
7ae1f7ec LB |
860 | config PLAT_IOP |
861 | bool | |
469d3044 | 862 | select GENERIC_CLOCKEVENTS |
980f2296 | 863 | select GENERIC_TIME |
7ae1f7ec | 864 | |
69b02f6a LB |
865 | config PLAT_ORION |
866 | bool | |
867 | ||
bd5ce433 EM |
868 | config PLAT_PXA |
869 | bool | |
870 | ||
1da177e4 LT |
871 | source arch/arm/mm/Kconfig |
872 | ||
afe4b25e LB |
873 | config IWMMXT |
874 | bool "Enable iWMMXt support" | |
40305a58 EM |
875 | depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK |
876 | default y if PXA27x || PXA3xx || ARCH_MMP | |
afe4b25e LB |
877 | help |
878 | Enable support for iWMMXt context switching at run time if | |
879 | running on a CPU that supports it. | |
880 | ||
1da177e4 LT |
881 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER |
882 | config XSCALE_PMU | |
883 | bool | |
884 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
885 | default y | |
886 | ||
3b93e7b0 HC |
887 | if !MMU |
888 | source "arch/arm/Kconfig-nommu" | |
889 | endif | |
890 | ||
9cba3ccc CM |
891 | config ARM_ERRATA_411920 |
892 | bool "ARM errata: Invalidation of the Instruction Cache operation can fail" | |
893 | depends on CPU_V6 && !SMP | |
894 | help | |
895 | Invalidation of the Instruction Cache operation can | |
896 | fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. | |
897 | It does not affect the MPCore. This option enables the ARM Ltd. | |
898 | recommended workaround. | |
899 | ||
7ce236fc CM |
900 | config ARM_ERRATA_430973 |
901 | bool "ARM errata: Stale prediction on replaced interworking branch" | |
902 | depends on CPU_V7 | |
903 | help | |
904 | This option enables the workaround for the 430973 Cortex-A8 | |
905 | (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb | |
906 | interworking branch is replaced with another code sequence at the | |
907 | same virtual address, whether due to self-modifying code or virtual | |
908 | to physical address re-mapping, Cortex-A8 does not recover from the | |
909 | stale interworking branch prediction. This results in Cortex-A8 | |
910 | executing the new code sequence in the incorrect ARM or Thumb state. | |
911 | The workaround enables the BTB/BTAC operations by setting ACTLR.IBE | |
912 | and also flushes the branch target cache at every context switch. | |
913 | Note that setting specific bits in the ACTLR register may not be | |
914 | available in non-secure mode. | |
915 | ||
855c551f CM |
916 | config ARM_ERRATA_458693 |
917 | bool "ARM errata: Processor deadlock when a false hazard is created" | |
918 | depends on CPU_V7 | |
919 | help | |
920 | This option enables the workaround for the 458693 Cortex-A8 (r2p0) | |
921 | erratum. For very specific sequences of memory operations, it is | |
922 | possible for a hazard condition intended for a cache line to instead | |
923 | be incorrectly associated with a different cache line. This false | |
924 | hazard might then cause a processor deadlock. The workaround enables | |
925 | the L1 caching of the NEON accesses and disables the PLD instruction | |
926 | in the ACTLR register. Note that setting specific bits in the ACTLR | |
927 | register may not be available in non-secure mode. | |
928 | ||
0516e464 CM |
929 | config ARM_ERRATA_460075 |
930 | bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" | |
931 | depends on CPU_V7 | |
932 | help | |
933 | This option enables the workaround for the 460075 Cortex-A8 (r2p0) | |
934 | erratum. Any asynchronous access to the L2 cache may encounter a | |
935 | situation in which recent store transactions to the L2 cache are lost | |
936 | and overwritten with stale memory contents from external memory. The | |
937 | workaround disables the write-allocate mode for the L2 cache via the | |
938 | ACTLR register. Note that setting specific bits in the ACTLR register | |
939 | may not be available in non-secure mode. | |
940 | ||
1da177e4 LT |
941 | endmenu |
942 | ||
943 | source "arch/arm/common/Kconfig" | |
944 | ||
945 | config FORCE_MAX_ZONEORDER | |
946 | int | |
947 | depends on SA1111 | |
948 | default "9" | |
949 | ||
950 | menu "Bus support" | |
951 | ||
952 | config ARM_AMBA | |
953 | bool | |
954 | ||
955 | config ISA | |
956 | bool | |
1da177e4 LT |
957 | help |
958 | Find out whether you have ISA slots on your motherboard. ISA is the | |
959 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
960 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
961 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
962 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
963 | ||
065909b9 | 964 | # Select ISA DMA controller support |
1da177e4 LT |
965 | config ISA_DMA |
966 | bool | |
065909b9 | 967 | select ISA_DMA_API |
1da177e4 | 968 | |
065909b9 | 969 | # Select ISA DMA interface |
5cae841b AV |
970 | config ISA_DMA_API |
971 | bool | |
5cae841b | 972 | |
1da177e4 | 973 | config PCI |
a0113a99 | 974 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE |
1da177e4 LT |
975 | help |
976 | Find out whether you have a PCI motherboard. PCI is the name of a | |
977 | bus system, i.e. the way the CPU talks to the other stuff inside | |
978 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
979 | VESA. If you have PCI, say Y, otherwise N. | |
980 | ||
36e23590 MW |
981 | config PCI_SYSCALL |
982 | def_bool PCI | |
983 | ||
1da177e4 LT |
984 | # Select the host bridge type |
985 | config PCI_HOST_VIA82C505 | |
986 | bool | |
987 | depends on PCI && ARCH_SHARK | |
988 | default y | |
989 | ||
a0113a99 MR |
990 | config PCI_HOST_ITE8152 |
991 | bool | |
992 | depends on PCI && MACH_ARMCORE | |
993 | default y | |
994 | select DMABOUNCE | |
995 | ||
1da177e4 LT |
996 | source "drivers/pci/Kconfig" |
997 | ||
998 | source "drivers/pcmcia/Kconfig" | |
999 | ||
1000 | endmenu | |
1001 | ||
1002 | menu "Kernel Features" | |
1003 | ||
0567a0c0 KH |
1004 | source "kernel/time/Kconfig" |
1005 | ||
1da177e4 LT |
1006 | config SMP |
1007 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
42578c82 | 1008 | depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ |
850265e8 | 1009 | MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) |
bc28248e | 1010 | depends on GENERIC_CLOCKEVENTS |
f6dd9fa5 | 1011 | select USE_GENERIC_SMP_HELPERS |
850265e8 | 1012 | select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) |
1da177e4 LT |
1013 | help |
1014 | This enables support for systems with more than one CPU. If you have | |
1015 | a system with only one CPU, like most personal computers, say N. If | |
1016 | you have a system with more than one CPU, say Y. | |
1017 | ||
1018 | If you say N here, the kernel will run on single and multiprocessor | |
1019 | machines, but will use only one CPU of a multiprocessor machine. If | |
1020 | you say Y here, the kernel will run on many, but not all, single | |
1021 | processor machines. On a single processor machine, the kernel will | |
1022 | run faster if you say N here. | |
1023 | ||
03502faa | 1024 | See also <file:Documentation/i386/IO-APIC.txt>, |
1da177e4 LT |
1025 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
1026 | <http://www.linuxdoc.org/docs.html#howto>. | |
1027 | ||
1028 | If you don't know what to do here, say N. | |
1029 | ||
a8cbcd92 RK |
1030 | config HAVE_ARM_SCU |
1031 | bool | |
1032 | depends on SMP | |
1033 | help | |
1034 | This option enables support for the ARM system coherency unit | |
1035 | ||
f32f4ce2 RK |
1036 | config HAVE_ARM_TWD |
1037 | bool | |
1038 | depends on SMP | |
1039 | help | |
1040 | This options enables support for the ARM timer and watchdog unit | |
1041 | ||
8d5796d2 LB |
1042 | choice |
1043 | prompt "Memory split" | |
1044 | default VMSPLIT_3G | |
1045 | help | |
1046 | Select the desired split between kernel and user memory. | |
1047 | ||
1048 | If you are not absolutely sure what you are doing, leave this | |
1049 | option alone! | |
1050 | ||
1051 | config VMSPLIT_3G | |
1052 | bool "3G/1G user/kernel split" | |
1053 | config VMSPLIT_2G | |
1054 | bool "2G/2G user/kernel split" | |
1055 | config VMSPLIT_1G | |
1056 | bool "1G/3G user/kernel split" | |
1057 | endchoice | |
1058 | ||
1059 | config PAGE_OFFSET | |
1060 | hex | |
1061 | default 0x40000000 if VMSPLIT_1G | |
1062 | default 0x80000000 if VMSPLIT_2G | |
1063 | default 0xC0000000 | |
1064 | ||
1da177e4 LT |
1065 | config NR_CPUS |
1066 | int "Maximum number of CPUs (2-32)" | |
1067 | range 2 32 | |
1068 | depends on SMP | |
1069 | default "4" | |
1070 | ||
a054a811 RK |
1071 | config HOTPLUG_CPU |
1072 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
1073 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
1074 | help | |
1075 | Say Y here to experiment with turning CPUs off and on. CPUs | |
1076 | can be controlled through /sys/devices/system/cpu. | |
1077 | ||
37ee16ae RK |
1078 | config LOCAL_TIMERS |
1079 | bool "Use local timer interrupts" | |
42578c82 | 1080 | depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ |
850265e8 | 1081 | REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || ARCH_U8500) |
37ee16ae | 1082 | default y |
850265e8 | 1083 | select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4 || ARCH_U8500) |
37ee16ae RK |
1084 | help |
1085 | Enable support for local timers on SMP platforms, rather then the | |
1086 | legacy IPI broadcast method. Local timers allows the system | |
1087 | accounting to be spread across the timer interval, preventing a | |
1088 | "thundering herd" at every timer tick. | |
1089 | ||
d45a398f | 1090 | source kernel/Kconfig.preempt |
1da177e4 | 1091 | |
f8065813 RK |
1092 | config HZ |
1093 | int | |
1094 | default 128 if ARCH_L7200 | |
c4ffccdd | 1095 | default 200 if ARCH_EBSA110 || ARCH_S3C2410 || ARCH_S5P6440 |
bfe65704 | 1096 | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER |
5248c657 | 1097 | default AT91_TIMER_HZ if ARCH_AT91 |
f8065813 RK |
1098 | default 100 |
1099 | ||
16c79651 CM |
1100 | config THUMB2_KERNEL |
1101 | bool "Compile the kernel in Thumb-2 mode" | |
1102 | depends on CPU_V7 && EXPERIMENTAL | |
1103 | select AEABI | |
1104 | select ARM_ASM_UNIFIED | |
1105 | help | |
1106 | By enabling this option, the kernel will be compiled in | |
1107 | Thumb-2 mode. A compiler/assembler that understand the unified | |
1108 | ARM-Thumb syntax is needed. | |
1109 | ||
1110 | If unsure, say N. | |
1111 | ||
0becb088 CM |
1112 | config ARM_ASM_UNIFIED |
1113 | bool | |
1114 | ||
704bdda0 NP |
1115 | config AEABI |
1116 | bool "Use the ARM EABI to compile the kernel" | |
1117 | help | |
1118 | This option allows for the kernel to be compiled using the latest | |
1119 | ARM ABI (aka EABI). This is only useful if you are using a user | |
1120 | space environment that is also compiled with EABI. | |
1121 | ||
1122 | Since there are major incompatibilities between the legacy ABI and | |
1123 | EABI, especially with regard to structure member alignment, this | |
1124 | option also changes the kernel syscall calling convention to | |
1125 | disambiguate both ABIs and allow for backward compatibility support | |
1126 | (selected with CONFIG_OABI_COMPAT). | |
1127 | ||
1128 | To use this you need GCC version 4.0.0 or later. | |
1129 | ||
6c90c872 | 1130 | config OABI_COMPAT |
a73a3ff1 | 1131 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
61c484d4 | 1132 | depends on AEABI && EXPERIMENTAL |
6c90c872 NP |
1133 | default y |
1134 | help | |
1135 | This option preserves the old syscall interface along with the | |
1136 | new (ARM EABI) one. It also provides a compatibility layer to | |
1137 | intercept syscalls that have structure arguments which layout | |
1138 | in memory differs between the legacy ABI and the new ARM EABI | |
1139 | (only for non "thumb" binaries). This option adds a tiny | |
1140 | overhead to all syscalls and produces a slightly larger kernel. | |
1141 | If you know you'll be using only pure EABI user space then you | |
1142 | can say N here. If this option is not selected and you attempt | |
1143 | to execute a legacy ABI binary then the result will be | |
1144 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
1145 | at all). If in doubt say Y. | |
1146 | ||
eb33575c | 1147 | config ARCH_HAS_HOLES_MEMORYMODEL |
e80d6a24 | 1148 | bool |
e80d6a24 | 1149 | |
07a2f737 | 1150 | # Discontigmem is deprecated |
3f22ab27 | 1151 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 1152 | bool |
1da177e4 | 1153 | |
05944d74 RK |
1154 | config ARCH_SPARSEMEM_ENABLE |
1155 | bool | |
1156 | ||
07a2f737 RK |
1157 | config ARCH_SPARSEMEM_DEFAULT |
1158 | def_bool ARCH_SPARSEMEM_ENABLE | |
1159 | ||
05944d74 | 1160 | config ARCH_SELECT_MEMORY_MODEL |
07a2f737 | 1161 | def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE |
05944d74 | 1162 | |
c80d79d7 YG |
1163 | config NODES_SHIFT |
1164 | int | |
1165 | default "4" if ARCH_LH7A40X | |
1166 | default "2" | |
1167 | depends on NEED_MULTIPLE_NODES | |
1168 | ||
053a96ca NP |
1169 | config HIGHMEM |
1170 | bool "High Memory Support (EXPERIMENTAL)" | |
1171 | depends on MMU && EXPERIMENTAL | |
1172 | help | |
1173 | The address space of ARM processors is only 4 Gigabytes large | |
1174 | and it has to accommodate user address space, kernel address | |
1175 | space as well as some memory mapped IO. That means that, if you | |
1176 | have a large amount of physical memory and/or IO, not all of the | |
1177 | memory can be "permanently mapped" by the kernel. The physical | |
1178 | memory that is not permanently mapped is called "high memory". | |
1179 | ||
1180 | Depending on the selected kernel/user memory split, minimum | |
1181 | vmalloc space and actual amount of RAM, you may not need this | |
1182 | option which should result in a slightly faster kernel. | |
1183 | ||
1184 | If unsure, say n. | |
1185 | ||
65cec8e3 RK |
1186 | config HIGHPTE |
1187 | bool "Allocate 2nd-level pagetables from highmem" | |
1188 | depends on HIGHMEM | |
1189 | depends on !OUTER_CACHE | |
1190 | ||
3f22ab27 DH |
1191 | source "mm/Kconfig" |
1192 | ||
1da177e4 LT |
1193 | config LEDS |
1194 | bool "Timer and CPU usage LEDs" | |
e055d5bf | 1195 | depends on ARCH_CDB89712 || ARCH_EBSA110 || \ |
8c8fdbc9 | 1196 | ARCH_EBSA285 || ARCH_INTEGRATOR || \ |
1da177e4 LT |
1197 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ |
1198 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c | 1199 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
25329671 | 1200 | ARCH_AT91 || ARCH_DAVINCI || \ |
ff3042fb | 1201 | ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW |
1da177e4 LT |
1202 | help |
1203 | If you say Y here, the LEDs on your machine will be used | |
1204 | to provide useful information about your current system status. | |
1205 | ||
1206 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
1207 | be able to select which LEDs are active using the options below. If | |
1208 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
1209 | red LED will simply flash regularly to indicate that the system is | |
1210 | still functional. It is safe to say Y here if you have a CATS | |
1211 | system, but the driver will do nothing. | |
1212 | ||
1213 | config LEDS_TIMER | |
1214 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
eebdf7d7 DB |
1215 | OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ |
1216 | || MACH_OMAP_PERSEUS2 | |
1da177e4 | 1217 | depends on LEDS |
0567a0c0 | 1218 | depends on !GENERIC_CLOCKEVENTS |
1da177e4 LT |
1219 | default y if ARCH_EBSA110 |
1220 | help | |
1221 | If you say Y here, one of the system LEDs (the green one on the | |
1222 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
1223 | will flash regularly to indicate that the system is still | |
1224 | operational. This is mainly useful to kernel hackers who are | |
1225 | debugging unstable kernels. | |
1226 | ||
1227 | The LART uses the same LED for both Timer LED and CPU usage LED | |
1228 | functions. You may choose to use both, but the Timer LED function | |
1229 | will overrule the CPU usage LED. | |
1230 | ||
1231 | config LEDS_CPU | |
1232 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
eebdf7d7 DB |
1233 | !ARCH_OMAP) \ |
1234 | || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ | |
1235 | || MACH_OMAP_PERSEUS2 | |
1da177e4 LT |
1236 | depends on LEDS |
1237 | help | |
1238 | If you say Y here, the red LED will be used to give a good real | |
1239 | time indication of CPU usage, by lighting whenever the idle task | |
1240 | is not currently executing. | |
1241 | ||
1242 | The LART uses the same LED for both Timer LED and CPU usage LED | |
1243 | functions. You may choose to use both, but the Timer LED function | |
1244 | will overrule the CPU usage LED. | |
1245 | ||
1246 | config ALIGNMENT_TRAP | |
1247 | bool | |
f12d0d7c | 1248 | depends on CPU_CP15_MMU |
1da177e4 LT |
1249 | default y if !ARCH_EBSA110 |
1250 | help | |
84eb8d06 | 1251 | ARM processors cannot fetch/store information which is not |
1da177e4 LT |
1252 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an |
1253 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
1254 | fetch/store instructions will be emulated in software if you say | |
1255 | here, which has a severe performance impact. This is necessary for | |
1256 | correct operation of some network protocols. With an IP-only | |
1257 | configuration it is safe to say N, otherwise say Y. | |
1258 | ||
39ec58f3 LB |
1259 | config UACCESS_WITH_MEMCPY |
1260 | bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" | |
1261 | depends on MMU && EXPERIMENTAL | |
1262 | default y if CPU_FEROCEON | |
1263 | help | |
1264 | Implement faster copy_to_user and clear_user methods for CPU | |
1265 | cores where a 8-word STM instruction give significantly higher | |
1266 | memory write throughput than a sequence of individual 32bit stores. | |
1267 | ||
1268 | A possible side effect is a slight increase in scheduling latency | |
1269 | between threads sharing the same address space if they invoke | |
1270 | such copy operations with large buffers. | |
1271 | ||
1272 | However, if the CPU data cache is using a write-allocate mode, | |
1273 | this option is unlikely to provide any performance gain. | |
1274 | ||
1da177e4 LT |
1275 | endmenu |
1276 | ||
1277 | menu "Boot options" | |
1278 | ||
1279 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
1280 | # TEXT and BSS so we preserve their values in the config files. | |
1281 | config ZBOOT_ROM_TEXT | |
1282 | hex "Compressed ROM boot loader base address" | |
1283 | default "0" | |
1284 | help | |
1285 | The physical address at which the ROM-able zImage is to be | |
1286 | placed in the target. Platforms which normally make use of | |
1287 | ROM-able zImage formats normally set this to a suitable | |
1288 | value in their defconfig file. | |
1289 | ||
1290 | If ZBOOT_ROM is not enabled, this has no effect. | |
1291 | ||
1292 | config ZBOOT_ROM_BSS | |
1293 | hex "Compressed ROM boot loader BSS address" | |
1294 | default "0" | |
1295 | help | |
f8c440b2 DF |
1296 | The base address of an area of read/write memory in the target |
1297 | for the ROM-able zImage which must be available while the | |
1298 | decompressor is running. It must be large enough to hold the | |
1299 | entire decompressed kernel plus an additional 128 KiB. | |
1300 | Platforms which normally make use of ROM-able zImage formats | |
1301 | normally set this to a suitable value in their defconfig file. | |
1da177e4 LT |
1302 | |
1303 | If ZBOOT_ROM is not enabled, this has no effect. | |
1304 | ||
1305 | config ZBOOT_ROM | |
1306 | bool "Compressed boot loader in ROM/flash" | |
1307 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
1308 | help | |
1309 | Say Y here if you intend to execute your compressed kernel image | |
1310 | (zImage) directly from ROM or flash. If unsure, say N. | |
1311 | ||
1312 | config CMDLINE | |
1313 | string "Default kernel command string" | |
1314 | default "" | |
1315 | help | |
1316 | On some architectures (EBSA110 and CATS), there is currently no way | |
1317 | for the boot loader to pass arguments to the kernel. For these | |
1318 | architectures, you should supply some command-line options at build | |
1319 | time by entering them here. As a minimum, you should specify the | |
1320 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
1321 | ||
1322 | config XIP_KERNEL | |
1323 | bool "Kernel Execute-In-Place from ROM" | |
1324 | depends on !ZBOOT_ROM | |
1325 | help | |
1326 | Execute-In-Place allows the kernel to run from non-volatile storage | |
1327 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
1328 | space since the text section of the kernel is not loaded from flash | |
1329 | to RAM. Read-write sections, such as the data section and stack, | |
1330 | are still copied to RAM. The XIP kernel is not compressed since | |
1331 | it has to run directly from flash, so it will take more space to | |
1332 | store it. The flash address used to link the kernel object files, | |
1333 | and for storing it, is configuration dependent. Therefore, if you | |
1334 | say Y here, you must know the proper physical address where to | |
1335 | store the kernel image depending on your own flash memory usage. | |
1336 | ||
1337 | Also note that the make target becomes "make xipImage" rather than | |
1338 | "make zImage" or "make Image". The final kernel binary to put in | |
1339 | ROM memory will be arch/arm/boot/xipImage. | |
1340 | ||
1341 | If unsure, say N. | |
1342 | ||
1343 | config XIP_PHYS_ADDR | |
1344 | hex "XIP Kernel Physical Location" | |
1345 | depends on XIP_KERNEL | |
1346 | default "0x00080000" | |
1347 | help | |
1348 | This is the physical address in your flash memory the kernel will | |
1349 | be linked for and stored to. This address is dependent on your | |
1350 | own flash usage. | |
1351 | ||
c587e4a6 RP |
1352 | config KEXEC |
1353 | bool "Kexec system call (EXPERIMENTAL)" | |
1354 | depends on EXPERIMENTAL | |
1355 | help | |
1356 | kexec is a system call that implements the ability to shutdown your | |
1357 | current kernel, and to start another kernel. It is like a reboot | |
01dd2fbf | 1358 | but it is independent of the system firmware. And like a reboot |
c587e4a6 RP |
1359 | you can start any kernel with it, not just Linux. |
1360 | ||
1361 | It is an ongoing process to be certain the hardware in a machine | |
1362 | is properly shutdown, so do not be surprised if this code does not | |
1363 | initially work for you. It may help to enable device hotplugging | |
1364 | support. | |
1365 | ||
4cd9d6f7 RP |
1366 | config ATAGS_PROC |
1367 | bool "Export atags in procfs" | |
b98d7291 UL |
1368 | depends on KEXEC |
1369 | default y | |
4cd9d6f7 RP |
1370 | help |
1371 | Should the atags used to boot the kernel be exported in an "atags" | |
1372 | file in procfs. Useful with kexec. | |
1373 | ||
1da177e4 LT |
1374 | endmenu |
1375 | ||
ac9d7efc | 1376 | menu "CPU Power Management" |
1da177e4 | 1377 | |
89c52ed4 | 1378 | if ARCH_HAS_CPUFREQ |
1da177e4 LT |
1379 | |
1380 | source "drivers/cpufreq/Kconfig" | |
1381 | ||
1382 | config CPU_FREQ_SA1100 | |
1383 | bool | |
1da177e4 LT |
1384 | |
1385 | config CPU_FREQ_SA1110 | |
1386 | bool | |
1da177e4 LT |
1387 | |
1388 | config CPU_FREQ_INTEGRATOR | |
1389 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
1390 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
1391 | default y | |
1392 | help | |
1393 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
1394 | ||
1395 | For details, take a look at <file:Documentation/cpu-freq>. | |
1396 | ||
1397 | If in doubt, say Y. | |
1398 | ||
9e2697ff RK |
1399 | config CPU_FREQ_PXA |
1400 | bool | |
1401 | depends on CPU_FREQ && ARCH_PXA && PXA25x | |
1402 | default y | |
1403 | select CPU_FREQ_DEFAULT_GOV_USERSPACE | |
1404 | ||
b3748ddd MB |
1405 | config CPU_FREQ_S3C64XX |
1406 | bool "CPUfreq support for Samsung S3C64XX CPUs" | |
1407 | depends on CPU_FREQ && CPU_S3C6410 | |
1408 | ||
9d56c02a BD |
1409 | config CPU_FREQ_S3C |
1410 | bool | |
1411 | help | |
1412 | Internal configuration node for common cpufreq on Samsung SoC | |
1413 | ||
1414 | config CPU_FREQ_S3C24XX | |
1415 | bool "CPUfreq driver for Samsung S3C24XX series CPUs" | |
1416 | depends on ARCH_S3C2410 && CPU_FREQ && EXPERIMENTAL | |
1417 | select CPU_FREQ_S3C | |
1418 | help | |
1419 | This enables the CPUfreq driver for the Samsung S3C24XX family | |
1420 | of CPUs. | |
1421 | ||
1422 | For details, take a look at <file:Documentation/cpu-freq>. | |
1423 | ||
1424 | If in doubt, say N. | |
1425 | ||
1426 | config CPU_FREQ_S3C24XX_PLL | |
1427 | bool "Support CPUfreq changing of PLL frequency" | |
1428 | depends on CPU_FREQ_S3C24XX && EXPERIMENTAL | |
1429 | help | |
1430 | Compile in support for changing the PLL frequency from the | |
1431 | S3C24XX series CPUfreq driver. The PLL takes time to settle | |
1432 | after a frequency change, so by default it is not enabled. | |
1433 | ||
1434 | This also means that the PLL tables for the selected CPU(s) will | |
1435 | be built which may increase the size of the kernel image. | |
1436 | ||
1437 | config CPU_FREQ_S3C24XX_DEBUG | |
1438 | bool "Debug CPUfreq Samsung driver core" | |
1439 | depends on CPU_FREQ_S3C24XX | |
1440 | help | |
1441 | Enable s3c_freq_dbg for the Samsung S3C CPUfreq core | |
1442 | ||
1443 | config CPU_FREQ_S3C24XX_IODEBUG | |
1444 | bool "Debug CPUfreq Samsung driver IO timing" | |
1445 | depends on CPU_FREQ_S3C24XX | |
1446 | help | |
1447 | Enable s3c_freq_iodbg for the Samsung S3C CPUfreq core | |
1448 | ||
e6d197a6 BD |
1449 | config CPU_FREQ_S3C24XX_DEBUGFS |
1450 | bool "Export debugfs for CPUFreq" | |
1451 | depends on CPU_FREQ_S3C24XX && DEBUG_FS | |
1452 | help | |
1453 | Export status information via debugfs. | |
1454 | ||
1da177e4 LT |
1455 | endif |
1456 | ||
ac9d7efc RK |
1457 | source "drivers/cpuidle/Kconfig" |
1458 | ||
1459 | endmenu | |
1460 | ||
1da177e4 LT |
1461 | menu "Floating point emulation" |
1462 | ||
1463 | comment "At least one emulation must be selected" | |
1464 | ||
1465 | config FPE_NWFPE | |
1466 | bool "NWFPE math emulation" | |
8993a44c | 1467 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
1468 | ---help--- |
1469 | Say Y to include the NWFPE floating point emulator in the kernel. | |
1470 | This is necessary to run most binaries. Linux does not currently | |
1471 | support floating point hardware so you need to say Y here even if | |
1472 | your machine has an FPA or floating point co-processor podule. | |
1473 | ||
1474 | You may say N here if you are going to load the Acorn FPEmulator | |
1475 | early in the bootup. | |
1476 | ||
1477 | config FPE_NWFPE_XP | |
1478 | bool "Support extended precision" | |
bedf142b | 1479 | depends on FPE_NWFPE |
1da177e4 LT |
1480 | help |
1481 | Say Y to include 80-bit support in the kernel floating-point | |
1482 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
1483 | Note that gcc does not generate 80-bit operations by default, | |
1484 | so in most cases this option only enlarges the size of the | |
1485 | floating point emulator without any good reason. | |
1486 | ||
1487 | You almost surely want to say N here. | |
1488 | ||
1489 | config FPE_FASTFPE | |
1490 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 1491 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
1492 | ---help--- |
1493 | Say Y here to include the FAST floating point emulator in the kernel. | |
1494 | This is an experimental much faster emulator which now also has full | |
1495 | precision for the mantissa. It does not support any exceptions. | |
1496 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
1497 | ||
1498 | It should be sufficient for most programs. It may be not suitable | |
1499 | for scientific calculations, but you have to check this for yourself. | |
1500 | If you do not feel you need a faster FP emulation you should better | |
1501 | choose NWFPE. | |
1502 | ||
1503 | config VFP | |
1504 | bool "VFP-format floating point maths" | |
c00d4ffd | 1505 | depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON |
1da177e4 LT |
1506 | help |
1507 | Say Y to include VFP support code in the kernel. This is needed | |
1508 | if your hardware includes a VFP unit. | |
1509 | ||
1510 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
1511 | release notes and additional status information. | |
1512 | ||
1513 | Say N if your target does not have VFP hardware. | |
1514 | ||
25ebee02 CM |
1515 | config VFPv3 |
1516 | bool | |
1517 | depends on VFP | |
1518 | default y if CPU_V7 | |
1519 | ||
b5872db4 CM |
1520 | config NEON |
1521 | bool "Advanced SIMD (NEON) Extension support" | |
1522 | depends on VFPv3 && CPU_V7 | |
1523 | help | |
1524 | Say Y to include support code for NEON, the ARMv7 Advanced SIMD | |
1525 | Extension. | |
1526 | ||
1da177e4 LT |
1527 | endmenu |
1528 | ||
1529 | menu "Userspace binary formats" | |
1530 | ||
1531 | source "fs/Kconfig.binfmt" | |
1532 | ||
1533 | config ARTHUR | |
1534 | tristate "RISC OS personality" | |
704bdda0 | 1535 | depends on !AEABI |
1da177e4 LT |
1536 | help |
1537 | Say Y here to include the kernel code necessary if you want to run | |
1538 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
1539 | experimental; if this sounds frightening, say N and sleep in peace. | |
1540 | You can also say M here to compile this support as a module (which | |
1541 | will be called arthur). | |
1542 | ||
1543 | endmenu | |
1544 | ||
1545 | menu "Power management options" | |
1546 | ||
eceab4ac | 1547 | source "kernel/power/Kconfig" |
1da177e4 | 1548 | |
f4cb5700 JB |
1549 | config ARCH_SUSPEND_POSSIBLE |
1550 | def_bool y | |
1551 | ||
1da177e4 LT |
1552 | endmenu |
1553 | ||
d5950b43 SR |
1554 | source "net/Kconfig" |
1555 | ||
ac25150f | 1556 | source "drivers/Kconfig" |
1da177e4 LT |
1557 | |
1558 | source "fs/Kconfig" | |
1559 | ||
1da177e4 LT |
1560 | source "arch/arm/Kconfig.debug" |
1561 | ||
1562 | source "security/Kconfig" | |
1563 | ||
1564 | source "crypto/Kconfig" | |
1565 | ||
1566 | source "lib/Kconfig" |