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 |
1da177e4 LT |
21 | help |
22 | The ARM series is a line of low-power-consumption RISC chip designs | |
f6c8965a | 23 | licensed by ARM Ltd and targeted at embedded applications and |
1da177e4 | 24 | handhelds such as the Compaq IPAQ. ARM-based PCs are no longer |
f6c8965a | 25 | manufactured, but legacy ARM-based PC hardware remains popular in |
1da177e4 LT |
26 | Europe. There is an ARM Linux project with a web page at |
27 | <http://www.arm.linux.org.uk/>. | |
28 | ||
1a189b97 RK |
29 | config HAVE_PWM |
30 | bool | |
31 | ||
75e7153a RB |
32 | config SYS_SUPPORTS_APM_EMULATION |
33 | bool | |
34 | ||
0a938b97 DB |
35 | config GENERIC_GPIO |
36 | bool | |
0a938b97 | 37 | |
746140c7 KH |
38 | config GENERIC_TIME |
39 | bool | |
746140c7 | 40 | |
0567a0c0 KH |
41 | config GENERIC_CLOCKEVENTS |
42 | bool | |
0567a0c0 | 43 | |
a8655e83 CM |
44 | config GENERIC_CLOCKEVENTS_BROADCAST |
45 | bool | |
46 | depends on GENERIC_CLOCKEVENTS | |
47 | default y if SMP && !LOCAL_TIMERS | |
48 | ||
5ea81769 AV |
49 | config NO_IOPORT |
50 | bool | |
5ea81769 | 51 | |
1da177e4 LT |
52 | config EISA |
53 | bool | |
54 | ---help--- | |
55 | The Extended Industry Standard Architecture (EISA) bus was | |
56 | developed as an open alternative to the IBM MicroChannel bus. | |
57 | ||
58 | The EISA bus provided some of the features of the IBM MicroChannel | |
59 | bus while maintaining backward compatibility with cards made for | |
60 | the older ISA bus. The EISA bus saw limited use between 1988 and | |
61 | 1995 when it was made obsolete by the PCI bus. | |
62 | ||
63 | Say Y here if you are building a kernel for an EISA-based machine. | |
64 | ||
65 | Otherwise, say N. | |
66 | ||
67 | config SBUS | |
68 | bool | |
69 | ||
70 | config MCA | |
71 | bool | |
72 | help | |
73 | MicroChannel Architecture is found in some IBM PS/2 machines and | |
74 | laptops. It is a bus system similar to PCI or ISA. See | |
75 | <file:Documentation/mca.txt> (and especially the web page given | |
76 | there) before attempting to build an MCA bus kernel. | |
77 | ||
4a2581a0 TG |
78 | config GENERIC_HARDIRQS |
79 | bool | |
80 | default y | |
81 | ||
f16fb1ec RK |
82 | config STACKTRACE_SUPPORT |
83 | bool | |
84 | default y | |
85 | ||
f76e9154 NP |
86 | config HAVE_LATENCYTOP_SUPPORT |
87 | bool | |
88 | depends on !SMP | |
89 | default y | |
90 | ||
f16fb1ec RK |
91 | config LOCKDEP_SUPPORT |
92 | bool | |
93 | default y | |
94 | ||
7ad1bcb2 RK |
95 | config TRACE_IRQFLAGS_SUPPORT |
96 | bool | |
97 | default y | |
98 | ||
4a2581a0 TG |
99 | config HARDIRQS_SW_RESEND |
100 | bool | |
101 | default y | |
102 | ||
103 | config GENERIC_IRQ_PROBE | |
104 | bool | |
105 | default y | |
106 | ||
95c354fe NP |
107 | config GENERIC_LOCKBREAK |
108 | bool | |
109 | default y | |
110 | depends on SMP && PREEMPT | |
111 | ||
1da177e4 LT |
112 | config RWSEM_GENERIC_SPINLOCK |
113 | bool | |
114 | default y | |
115 | ||
116 | config RWSEM_XCHGADD_ALGORITHM | |
117 | bool | |
118 | ||
f0d1b0b3 DH |
119 | config ARCH_HAS_ILOG2_U32 |
120 | bool | |
f0d1b0b3 DH |
121 | |
122 | config ARCH_HAS_ILOG2_U64 | |
123 | bool | |
f0d1b0b3 | 124 | |
b89c3b16 AM |
125 | config GENERIC_HWEIGHT |
126 | bool | |
127 | default y | |
128 | ||
1da177e4 LT |
129 | config GENERIC_CALIBRATE_DELAY |
130 | bool | |
131 | default y | |
132 | ||
a08b6b79 Z |
133 | config ARCH_MAY_HAVE_PC_FDC |
134 | bool | |
135 | ||
5ac6da66 CL |
136 | config ZONE_DMA |
137 | bool | |
5ac6da66 | 138 | |
1da177e4 LT |
139 | config GENERIC_ISA_DMA |
140 | bool | |
141 | ||
1da177e4 LT |
142 | config FIQ |
143 | bool | |
144 | ||
034d2f5a AV |
145 | config ARCH_MTD_XIP |
146 | bool | |
147 | ||
60a752ef | 148 | config GENERIC_HARDIRQS_NO__DO_IRQ |
60a752ef PZ |
149 | def_bool y |
150 | ||
c0ffa3a9 MD |
151 | if OPROFILE |
152 | ||
153 | config OPROFILE_ARMV6 | |
154 | def_bool y | |
155 | depends on CPU_V6 && !SMP | |
156 | select OPROFILE_ARM11_CORE | |
157 | ||
158 | config OPROFILE_MPCORE | |
159 | def_bool y | |
160 | depends on CPU_V6 && SMP | |
161 | select OPROFILE_ARM11_CORE | |
162 | ||
163 | config OPROFILE_ARM11_CORE | |
164 | bool | |
165 | ||
d7ac4e28 JP |
166 | config OPROFILE_ARMV7 |
167 | def_bool y | |
168 | depends on CPU_V7 && !SMP | |
169 | bool | |
170 | ||
c0ffa3a9 MD |
171 | endif |
172 | ||
c760fc19 HC |
173 | config VECTORS_BASE |
174 | hex | |
6afd6fae | 175 | default 0xffff0000 if MMU || CPU_HIGH_VECTOR |
c760fc19 HC |
176 | default DRAM_BASE if REMAP_VECTORS_TO_RAM |
177 | default 0x00000000 | |
178 | help | |
179 | The base address of exception vectors. | |
180 | ||
1da177e4 LT |
181 | source "init/Kconfig" |
182 | ||
dc52ddc0 MH |
183 | source "kernel/Kconfig.freezer" |
184 | ||
1da177e4 LT |
185 | menu "System Type" |
186 | ||
3c427975 HC |
187 | config MMU |
188 | bool "MMU-based Paged Memory Management Support" | |
189 | default y | |
190 | help | |
191 | Select if you want MMU-based virtualised addressing space | |
192 | support by paged memory management. If unsure, say 'Y'. | |
193 | ||
1da177e4 LT |
194 | choice |
195 | prompt "ARM system type" | |
6a0e2430 | 196 | default ARCH_VERSATILE |
1da177e4 | 197 | |
4af6fee1 DS |
198 | config ARCH_AAEC2000 |
199 | bool "Agilent AAEC-2000 based" | |
c750815e | 200 | select CPU_ARM920T |
4af6fee1 | 201 | select ARM_AMBA |
9483a578 | 202 | select HAVE_CLK |
4af6fee1 DS |
203 | help |
204 | This enables support for systems based on the Agilent AAEC-2000 | |
205 | ||
206 | config ARCH_INTEGRATOR | |
207 | bool "ARM Ltd. Integrator family" | |
208 | select ARM_AMBA | |
9483a578 | 209 | select HAVE_CLK |
d72fbdf0 | 210 | select COMMON_CLKDEV |
4af6fee1 DS |
211 | select ICST525 |
212 | help | |
213 | Support for ARM's Integrator platform. | |
214 | ||
215 | config ARCH_REALVIEW | |
216 | bool "ARM Ltd. RealView family" | |
217 | select ARM_AMBA | |
9483a578 | 218 | select HAVE_CLK |
cf30fb4a | 219 | select COMMON_CLKDEV |
4af6fee1 | 220 | select ICST307 |
85802afe | 221 | select GENERIC_TIME |
ae30ceac | 222 | select GENERIC_CLOCKEVENTS |
4af6fee1 DS |
223 | help |
224 | This enables support for ARM Ltd RealView boards. | |
225 | ||
226 | config ARCH_VERSATILE | |
227 | bool "ARM Ltd. Versatile family" | |
228 | select ARM_AMBA | |
229 | select ARM_VIC | |
9483a578 | 230 | select HAVE_CLK |
71a06da0 | 231 | select COMMON_CLKDEV |
4af6fee1 | 232 | select ICST307 |
b49c87c2 | 233 | select GENERIC_TIME |
89df1272 | 234 | select GENERIC_CLOCKEVENTS |
4af6fee1 DS |
235 | help |
236 | This enables support for ARM Ltd Versatile board. | |
237 | ||
8fc5ffa0 AV |
238 | config ARCH_AT91 |
239 | bool "Atmel AT91" | |
0a938b97 | 240 | select GENERIC_GPIO |
f373e8c0 | 241 | select ARCH_REQUIRE_GPIOLIB |
93686ae8 | 242 | select HAVE_CLK |
4af6fee1 | 243 | help |
2b3b3516 AV |
244 | This enables support for systems based on the Atmel AT91RM9200, |
245 | AT91SAM9 and AT91CAP9 processors. | |
4af6fee1 | 246 | |
1da177e4 | 247 | config ARCH_CLPS711X |
4af6fee1 | 248 | bool "Cirrus Logic CLPS711x/EP721x-based" |
c750815e | 249 | select CPU_ARM720T |
f999b8bd MM |
250 | help |
251 | Support for Cirrus Logic 711x/721x based boards. | |
1da177e4 | 252 | |
788c9700 RK |
253 | config ARCH_GEMINI |
254 | bool "Cortina Systems Gemini" | |
255 | select CPU_FA526 | |
256 | select GENERIC_GPIO | |
257 | select ARCH_REQUIRE_GPIOLIB | |
258 | help | |
259 | Support for the Cortina Systems Gemini family SoCs | |
260 | ||
1da177e4 LT |
261 | config ARCH_EBSA110 |
262 | bool "EBSA-110" | |
c750815e | 263 | select CPU_SA110 |
f7e68bbf | 264 | select ISA |
c5eb2a2b | 265 | select NO_IOPORT |
1da177e4 LT |
266 | help |
267 | This is an evaluation board for the StrongARM processor available | |
f6c8965a | 268 | from Digital. It has limited hardware on-board, including an |
1da177e4 LT |
269 | Ethernet interface, two PCMCIA sockets, two serial ports and a |
270 | parallel port. | |
271 | ||
e7736d47 LB |
272 | config ARCH_EP93XX |
273 | bool "EP93xx-based" | |
c750815e | 274 | select CPU_ARM920T |
e7736d47 LB |
275 | select ARM_AMBA |
276 | select ARM_VIC | |
4e9f9fd5 | 277 | select GENERIC_GPIO |
9483a578 | 278 | select HAVE_CLK |
ae696fd5 | 279 | select COMMON_CLKDEV |
7444a72e | 280 | select ARCH_REQUIRE_GPIOLIB |
eb33575c | 281 | select ARCH_HAS_HOLES_MEMORYMODEL |
e7736d47 LB |
282 | help |
283 | This enables support for the Cirrus EP93xx series of CPUs. | |
284 | ||
1da177e4 LT |
285 | config ARCH_FOOTBRIDGE |
286 | bool "FootBridge" | |
c750815e | 287 | select CPU_SA110 |
1da177e4 | 288 | select FOOTBRIDGE |
f999b8bd MM |
289 | help |
290 | Support for systems based on the DC21285 companion chip | |
291 | ("FootBridge"), such as the Simtec CATS and the Rebel NetWinder. | |
1da177e4 | 292 | |
788c9700 RK |
293 | config ARCH_MXC |
294 | bool "Freescale MXC/iMX-based" | |
295 | select GENERIC_TIME | |
296 | select GENERIC_CLOCKEVENTS | |
297 | select ARCH_MTD_XIP | |
298 | select GENERIC_GPIO | |
299 | select ARCH_REQUIRE_GPIOLIB | |
a2ab67fa | 300 | select HAVE_CLK |
788c9700 RK |
301 | help |
302 | Support for Freescale MXC/iMX-based family of processors | |
303 | ||
7bd0f2f5 | 304 | config ARCH_STMP3XXX |
305 | bool "Freescale STMP3xxx" | |
306 | select CPU_ARM926T | |
307 | select HAVE_CLK | |
308 | select COMMON_CLKDEV | |
309 | select ARCH_REQUIRE_GPIOLIB | |
310 | select GENERIC_TIME | |
311 | select GENERIC_CLOCKEVENTS | |
312 | select GENERIC_GPIO | |
313 | select USB_ARCH_HAS_EHCI | |
314 | help | |
315 | Support for systems based on the Freescale 3xxx CPUs. | |
316 | ||
4af6fee1 DS |
317 | config ARCH_NETX |
318 | bool "Hilscher NetX based" | |
c750815e | 319 | select CPU_ARM926T |
4af6fee1 | 320 | select ARM_VIC |
2fcfe6b8 | 321 | select GENERIC_CLOCKEVENTS |
21edecd3 | 322 | select GENERIC_TIME |
f999b8bd | 323 | help |
4af6fee1 DS |
324 | This enables support for systems based on the Hilscher NetX Soc |
325 | ||
326 | config ARCH_H720X | |
327 | bool "Hynix HMS720x-based" | |
c750815e | 328 | select CPU_ARM720T |
4af6fee1 DS |
329 | select ISA_DMA_API |
330 | help | |
331 | This enables support for systems based on the Hynix HMS720x | |
332 | ||
3b938be6 RK |
333 | config ARCH_IOP13XX |
334 | bool "IOP13xx-based" | |
335 | depends on MMU | |
c750815e | 336 | select CPU_XSC3 |
3b938be6 RK |
337 | select PLAT_IOP |
338 | select PCI | |
339 | select ARCH_SUPPORTS_MSI | |
8d5796d2 | 340 | select VMSPLIT_1G |
3b938be6 RK |
341 | help |
342 | Support for Intel's IOP13XX (XScale) family of processors. | |
343 | ||
3f7e5815 LB |
344 | config ARCH_IOP32X |
345 | bool "IOP32x-based" | |
a4f7e763 | 346 | depends on MMU |
c750815e | 347 | select CPU_XSCALE |
7ae1f7ec | 348 | select PLAT_IOP |
f7e68bbf | 349 | select PCI |
63f385cd | 350 | select GENERIC_GPIO |
bb2b180c | 351 | select ARCH_REQUIRE_GPIOLIB |
f999b8bd | 352 | help |
3f7e5815 LB |
353 | Support for Intel's 80219 and IOP32X (XScale) family of |
354 | processors. | |
355 | ||
356 | config ARCH_IOP33X | |
357 | bool "IOP33x-based" | |
358 | depends on MMU | |
c750815e | 359 | select CPU_XSCALE |
7ae1f7ec | 360 | select PLAT_IOP |
3f7e5815 | 361 | select PCI |
63f385cd | 362 | select GENERIC_GPIO |
bb2b180c | 363 | select ARCH_REQUIRE_GPIOLIB |
3f7e5815 LB |
364 | help |
365 | Support for Intel's IOP33X (XScale) family of processors. | |
1da177e4 | 366 | |
3b938be6 RK |
367 | config ARCH_IXP23XX |
368 | bool "IXP23XX-based" | |
a4f7e763 | 369 | depends on MMU |
c750815e | 370 | select CPU_XSC3 |
3b938be6 | 371 | select PCI |
f999b8bd | 372 | help |
3b938be6 | 373 | Support for Intel's IXP23xx (XScale) family of processors. |
1da177e4 LT |
374 | |
375 | config ARCH_IXP2000 | |
376 | bool "IXP2400/2800-based" | |
a4f7e763 | 377 | depends on MMU |
c750815e | 378 | select CPU_XSCALE |
f7e68bbf | 379 | select PCI |
f999b8bd MM |
380 | help |
381 | Support for Intel's IXP2400/2800 (XScale) family of processors. | |
1da177e4 | 382 | |
3b938be6 RK |
383 | config ARCH_IXP4XX |
384 | bool "IXP4xx-based" | |
a4f7e763 | 385 | depends on MMU |
c750815e | 386 | select CPU_XSCALE |
8858e9af | 387 | select GENERIC_GPIO |
3b938be6 RK |
388 | select GENERIC_TIME |
389 | select GENERIC_CLOCKEVENTS | |
485bdde7 | 390 | select DMABOUNCE if PCI |
c4713074 | 391 | help |
3b938be6 | 392 | Support for Intel's IXP4XX (XScale) family of processors. |
c4713074 | 393 | |
1da177e4 LT |
394 | config ARCH_L7200 |
395 | bool "LinkUp-L7200" | |
c750815e | 396 | select CPU_ARM720T |
1da177e4 LT |
397 | select FIQ |
398 | help | |
399 | Say Y here if you intend to run this kernel on a LinkUp Systems | |
400 | L7200 Software Development Board which uses an ARM720T processor. | |
401 | Information on this board can be obtained at: | |
402 | ||
403 | <http://www.linkupsys.com/> | |
404 | ||
405 | If you have any questions or comments about the Linux kernel port | |
406 | to this board, send e-mail to <sjhill@cotw.com>. | |
407 | ||
651c74c7 SB |
408 | config ARCH_KIRKWOOD |
409 | bool "Marvell Kirkwood" | |
c750815e | 410 | select CPU_FEROCEON |
651c74c7 | 411 | select PCI |
4c213430 | 412 | select GENERIC_GPIO |
a8865655 | 413 | select ARCH_REQUIRE_GPIOLIB |
651c74c7 SB |
414 | select GENERIC_TIME |
415 | select GENERIC_CLOCKEVENTS | |
416 | select PLAT_ORION | |
417 | help | |
418 | Support for the following Marvell Kirkwood series SoCs: | |
419 | 88F6180, 88F6192 and 88F6281. | |
420 | ||
777f9beb LB |
421 | config ARCH_LOKI |
422 | bool "Marvell Loki (88RC8480)" | |
c750815e | 423 | select CPU_FEROCEON |
777f9beb LB |
424 | select GENERIC_TIME |
425 | select GENERIC_CLOCKEVENTS | |
426 | select PLAT_ORION | |
427 | help | |
428 | Support for the Marvell Loki (88RC8480) SoC. | |
429 | ||
794d15b2 SS |
430 | config ARCH_MV78XX0 |
431 | bool "Marvell MV78xx0" | |
c750815e | 432 | select CPU_FEROCEON |
794d15b2 | 433 | select PCI |
b95a13d7 | 434 | select GENERIC_GPIO |
a8865655 | 435 | select ARCH_REQUIRE_GPIOLIB |
794d15b2 SS |
436 | select GENERIC_TIME |
437 | select GENERIC_CLOCKEVENTS | |
438 | select PLAT_ORION | |
439 | help | |
440 | Support for the following Marvell MV78xx0 series SoCs: | |
441 | MV781x0, MV782x0. | |
442 | ||
9dd0b194 | 443 | config ARCH_ORION5X |
585cf175 TP |
444 | bool "Marvell Orion" |
445 | depends on MMU | |
c750815e | 446 | select CPU_FEROCEON |
038ee083 | 447 | select PCI |
01af72e4 | 448 | select GENERIC_GPIO |
a8865655 | 449 | select ARCH_REQUIRE_GPIOLIB |
51cbff1d TP |
450 | select GENERIC_TIME |
451 | select GENERIC_CLOCKEVENTS | |
69b02f6a | 452 | select PLAT_ORION |
585cf175 | 453 | help |
9dd0b194 | 454 | Support for the following Marvell Orion 5x series SoCs: |
d2b2a6bb | 455 | Orion-1 (5181), Orion-VoIP (5181L), Orion-NAS (5182), |
d323ade1 | 456 | Orion-2 (5281), Orion-1-90 (6183). |
585cf175 | 457 | |
788c9700 RK |
458 | config ARCH_MMP |
459 | bool "Marvell PXA168/910" | |
460 | depends on MMU | |
461 | select GENERIC_GPIO | |
462 | select ARCH_REQUIRE_GPIOLIB | |
463 | select HAVE_CLK | |
464 | select COMMON_CLKDEV | |
465 | select GENERIC_TIME | |
466 | select GENERIC_CLOCKEVENTS | |
467 | select TICK_ONESHOT | |
468 | select PLAT_PXA | |
469 | help | |
470 | Support for Marvell's PXA168/910 processor line. | |
471 | ||
472 | config ARCH_KS8695 | |
473 | bool "Micrel/Kendin KS8695" | |
474 | select CPU_ARM922T | |
475 | select GENERIC_GPIO | |
476 | select ARCH_REQUIRE_GPIOLIB | |
477 | help | |
478 | Support for Micrel/Kendin KS8695 "Centaur" (ARM922T) based | |
479 | System-on-Chip devices. | |
480 | ||
481 | config ARCH_NS9XXX | |
482 | bool "NetSilicon NS9xxx" | |
483 | select CPU_ARM926T | |
484 | select GENERIC_GPIO | |
485 | select GENERIC_TIME | |
486 | select GENERIC_CLOCKEVENTS | |
487 | select HAVE_CLK | |
488 | help | |
489 | Say Y here if you intend to run this kernel on a NetSilicon NS9xxx | |
490 | System. | |
491 | ||
492 | <http://www.digi.com/products/microprocessors/index.jsp> | |
493 | ||
494 | config ARCH_W90X900 | |
495 | bool "Nuvoton W90X900 CPU" | |
496 | select CPU_ARM926T | |
c52d3d68 | 497 | select ARCH_REQUIRE_GPIOLIB |
498 | select GENERIC_GPIO | |
0e4a34bb | 499 | select COMMON_CLKDEV |
788c9700 RK |
500 | help |
501 | Support for Nuvoton (Winbond logic dept.) ARM9 processor,You | |
502 | can login www.mcuos.com or www.nuvoton.com to know more. | |
503 | ||
4af6fee1 DS |
504 | config ARCH_PNX4008 |
505 | bool "Philips Nexperia PNX4008 Mobile" | |
c750815e | 506 | select CPU_ARM926T |
9483a578 | 507 | select HAVE_CLK |
4af6fee1 DS |
508 | help |
509 | This enables support for Philips PNX4008 mobile platform. | |
510 | ||
1da177e4 | 511 | config ARCH_PXA |
2c8086a5 | 512 | bool "PXA2xx/PXA3xx-based" |
a4f7e763 | 513 | depends on MMU |
034d2f5a | 514 | select ARCH_MTD_XIP |
0a938b97 | 515 | select GENERIC_GPIO |
9483a578 | 516 | select HAVE_CLK |
8c3abc7d | 517 | select COMMON_CLKDEV |
7444a72e | 518 | select ARCH_REQUIRE_GPIOLIB |
45cf5eef | 519 | select GENERIC_TIME |
981d0f39 | 520 | select GENERIC_CLOCKEVENTS |
a88264c2 | 521 | select TICK_ONESHOT |
bd5ce433 | 522 | select PLAT_PXA |
f999b8bd | 523 | help |
2c8086a5 | 524 | Support for Intel/Marvell's PXA2xx/PXA3xx processor line. |
1da177e4 | 525 | |
788c9700 RK |
526 | config ARCH_MSM |
527 | bool "Qualcomm MSM" | |
528 | select CPU_V6 | |
49cbe786 EM |
529 | select GENERIC_TIME |
530 | select GENERIC_CLOCKEVENTS | |
49cbe786 | 531 | help |
788c9700 RK |
532 | Support for Qualcomm MSM7K based systems. This runs on the ARM11 |
533 | apps processor of the MSM7K and depends on a shared memory | |
534 | interface to the ARM9 modem processor which runs the baseband stack | |
535 | and controls some vital subsystems (clock and power control, etc). | |
49cbe786 | 536 | |
1da177e4 LT |
537 | config ARCH_RPC |
538 | bool "RiscPC" | |
539 | select ARCH_ACORN | |
540 | select FIQ | |
541 | select TIMER_ACORN | |
a08b6b79 | 542 | select ARCH_MAY_HAVE_PC_FDC |
341eb781 | 543 | select HAVE_PATA_PLATFORM |
065909b9 | 544 | select ISA_DMA_API |
5ea81769 | 545 | select NO_IOPORT |
07f841b7 | 546 | select ARCH_SPARSEMEM_ENABLE |
1da177e4 LT |
547 | help |
548 | On the Acorn Risc-PC, Linux can support the internal IDE disk and | |
549 | CD-ROM interface, serial and parallel port, and the floppy drive. | |
550 | ||
551 | config ARCH_SA1100 | |
552 | bool "SA1100-based" | |
c750815e | 553 | select CPU_SA1100 |
f7e68bbf | 554 | select ISA |
05944d74 | 555 | select ARCH_SPARSEMEM_ENABLE |
034d2f5a | 556 | select ARCH_MTD_XIP |
0a938b97 | 557 | select GENERIC_GPIO |
d142b6e7 | 558 | select GENERIC_TIME |
3e238be2 | 559 | select GENERIC_CLOCKEVENTS |
9483a578 | 560 | select HAVE_CLK |
3e238be2 | 561 | select TICK_ONESHOT |
7444a72e | 562 | select ARCH_REQUIRE_GPIOLIB |
f999b8bd MM |
563 | help |
564 | Support for StrongARM 11x0 based boards. | |
1da177e4 LT |
565 | |
566 | config ARCH_S3C2410 | |
e4d06e39 | 567 | bool "Samsung S3C2410, S3C2412, S3C2413, S3C2440, S3C2442, S3C2443" |
0a938b97 | 568 | select GENERIC_GPIO |
9483a578 | 569 | select HAVE_CLK |
1da177e4 LT |
570 | help |
571 | Samsung S3C2410X CPU based systems, such as the Simtec Electronics | |
572 | BAST (<http://www.simtec.co.uk/products/EB110ITX/>), the IPAQ 1940 or | |
f6c8965a | 573 | the Samsung SMDK2410 development board (and derivatives). |
1da177e4 | 574 | |
a08ab637 BD |
575 | config ARCH_S3C64XX |
576 | bool "Samsung S3C64XX" | |
577 | select GENERIC_GPIO | |
578 | select HAVE_CLK | |
579 | help | |
580 | Samsung S3C64XX series based systems | |
581 | ||
1da177e4 LT |
582 | config ARCH_SHARK |
583 | bool "Shark" | |
c750815e | 584 | select CPU_SA110 |
f7e68bbf RK |
585 | select ISA |
586 | select ISA_DMA | |
3bca103a | 587 | select ZONE_DMA |
f7e68bbf | 588 | select PCI |
f999b8bd MM |
589 | help |
590 | Support for the StrongARM based Digital DNARD machine, also known | |
591 | as "Shark" (<http://www.shark-linux.de/shark.html>). | |
1da177e4 LT |
592 | |
593 | config ARCH_LH7A40X | |
594 | bool "Sharp LH7A40X" | |
c750815e | 595 | select CPU_ARM922T |
4ba3f7c5 RK |
596 | select ARCH_DISCONTIGMEM_ENABLE if !LH7A40X_CONTIGMEM |
597 | select ARCH_SPARSEMEM_ENABLE if !LH7A40X_CONTIGMEM | |
1da177e4 LT |
598 | help |
599 | Say Y here for systems based on one of the Sharp LH7A40X | |
600 | System on a Chip processors. These CPUs include an ARM922T | |
601 | core with a wide array of integrated devices for | |
602 | hand-held and low-power applications. | |
603 | ||
d98aac75 LW |
604 | config ARCH_U300 |
605 | bool "ST-Ericsson U300 Series" | |
606 | depends on MMU | |
607 | select CPU_ARM926T | |
608 | select ARM_AMBA | |
609 | select ARM_VIC | |
610 | select GENERIC_TIME | |
611 | select GENERIC_CLOCKEVENTS | |
612 | select HAVE_CLK | |
613 | select COMMON_CLKDEV | |
614 | select GENERIC_GPIO | |
615 | help | |
616 | Support for ST-Ericsson U300 series mobile platforms. | |
617 | ||
7c6337e2 KH |
618 | config ARCH_DAVINCI |
619 | bool "TI DaVinci" | |
c750815e | 620 | select CPU_ARM926T |
7c6337e2 KH |
621 | select GENERIC_TIME |
622 | select GENERIC_CLOCKEVENTS | |
3d9edf09 | 623 | select GENERIC_GPIO |
dce1115b | 624 | select ARCH_REQUIRE_GPIOLIB |
9483a578 | 625 | select HAVE_CLK |
3bca103a | 626 | select ZONE_DMA |
9232fcc9 | 627 | select HAVE_IDE |
c5b736d0 | 628 | select COMMON_CLKDEV |
20e9969b | 629 | select GENERIC_ALLOCATOR |
7c6337e2 KH |
630 | help |
631 | Support for TI's DaVinci platform. | |
632 | ||
3b938be6 RK |
633 | config ARCH_OMAP |
634 | bool "TI OMAP" | |
635 | select GENERIC_GPIO | |
9483a578 | 636 | select HAVE_CLK |
7444a72e | 637 | select ARCH_REQUIRE_GPIOLIB |
3b938be6 | 638 | select GENERIC_TIME |
06cad098 | 639 | select GENERIC_CLOCKEVENTS |
3b938be6 RK |
640 | help |
641 | Support for TI's OMAP platform (OMAP1 and OMAP2). | |
642 | ||
1da177e4 LT |
643 | endchoice |
644 | ||
645 | source "arch/arm/mach-clps711x/Kconfig" | |
646 | ||
e7736d47 LB |
647 | source "arch/arm/mach-ep93xx/Kconfig" |
648 | ||
1da177e4 LT |
649 | source "arch/arm/mach-footbridge/Kconfig" |
650 | ||
59d3a193 PZ |
651 | source "arch/arm/mach-gemini/Kconfig" |
652 | ||
1da177e4 LT |
653 | source "arch/arm/mach-integrator/Kconfig" |
654 | ||
3f7e5815 LB |
655 | source "arch/arm/mach-iop32x/Kconfig" |
656 | ||
657 | source "arch/arm/mach-iop33x/Kconfig" | |
1da177e4 | 658 | |
285f5fa7 DW |
659 | source "arch/arm/mach-iop13xx/Kconfig" |
660 | ||
1da177e4 LT |
661 | source "arch/arm/mach-ixp4xx/Kconfig" |
662 | ||
663 | source "arch/arm/mach-ixp2000/Kconfig" | |
664 | ||
c4713074 LB |
665 | source "arch/arm/mach-ixp23xx/Kconfig" |
666 | ||
777f9beb LB |
667 | source "arch/arm/mach-loki/Kconfig" |
668 | ||
794d15b2 SS |
669 | source "arch/arm/mach-mv78xx0/Kconfig" |
670 | ||
1da177e4 | 671 | source "arch/arm/mach-pxa/Kconfig" |
bd5ce433 | 672 | source "arch/arm/plat-pxa/Kconfig" |
1da177e4 | 673 | |
49cbe786 EM |
674 | source "arch/arm/mach-mmp/Kconfig" |
675 | ||
1da177e4 LT |
676 | source "arch/arm/mach-sa1100/Kconfig" |
677 | ||
d48af15e TL |
678 | source "arch/arm/plat-omap/Kconfig" |
679 | ||
680 | source "arch/arm/mach-omap1/Kconfig" | |
1da177e4 | 681 | |
1dbae815 TL |
682 | source "arch/arm/mach-omap2/Kconfig" |
683 | ||
9dd0b194 | 684 | source "arch/arm/mach-orion5x/Kconfig" |
585cf175 | 685 | |
651c74c7 | 686 | source "arch/arm/mach-kirkwood/Kconfig" |
585cf175 | 687 | |
a21765a7 | 688 | source "arch/arm/plat-s3c24xx/Kconfig" |
a08ab637 | 689 | source "arch/arm/plat-s3c64xx/Kconfig" |
d58153d8 | 690 | source "arch/arm/plat-s3c/Kconfig" |
a21765a7 BD |
691 | |
692 | if ARCH_S3C2410 | |
693 | source "arch/arm/mach-s3c2400/Kconfig" | |
1da177e4 | 694 | source "arch/arm/mach-s3c2410/Kconfig" |
a21765a7 BD |
695 | source "arch/arm/mach-s3c2412/Kconfig" |
696 | source "arch/arm/mach-s3c2440/Kconfig" | |
697 | source "arch/arm/mach-s3c2442/Kconfig" | |
e4d06e39 | 698 | source "arch/arm/mach-s3c2443/Kconfig" |
a21765a7 | 699 | endif |
1da177e4 | 700 | |
a08ab637 BD |
701 | if ARCH_S3C64XX |
702 | source "arch/arm/mach-s3c6400/Kconfig" | |
703 | source "arch/arm/mach-s3c6410/Kconfig" | |
704 | endif | |
705 | ||
7bd0f2f5 | 706 | source "arch/arm/plat-stmp3xxx/Kconfig" |
707 | ||
1da177e4 LT |
708 | source "arch/arm/mach-lh7a40x/Kconfig" |
709 | ||
1da177e4 LT |
710 | source "arch/arm/mach-h720x/Kconfig" |
711 | ||
712 | source "arch/arm/mach-versatile/Kconfig" | |
713 | ||
038c5b60 BN |
714 | source "arch/arm/mach-aaec2000/Kconfig" |
715 | ||
8ad68bbf CM |
716 | source "arch/arm/mach-realview/Kconfig" |
717 | ||
9d041268 | 718 | source "arch/arm/mach-at91/Kconfig" |
73a59c1c | 719 | |
52c543f9 QJ |
720 | source "arch/arm/plat-mxc/Kconfig" |
721 | ||
bb6d8c88 SH |
722 | source "arch/arm/mach-netx/Kconfig" |
723 | ||
9918cda5 UKK |
724 | source "arch/arm/mach-ns9xxx/Kconfig" |
725 | ||
7c6337e2 KH |
726 | source "arch/arm/mach-davinci/Kconfig" |
727 | ||
c53c9cf6 AV |
728 | source "arch/arm/mach-ks8695/Kconfig" |
729 | ||
9e73c84c BS |
730 | source "arch/arm/mach-msm/Kconfig" |
731 | ||
d98aac75 LW |
732 | source "arch/arm/mach-u300/Kconfig" |
733 | ||
7ec80ddf | 734 | source "arch/arm/mach-w90x900/Kconfig" |
735 | ||
1da177e4 LT |
736 | # Definitions to make life easier |
737 | config ARCH_ACORN | |
738 | bool | |
739 | ||
7ae1f7ec LB |
740 | config PLAT_IOP |
741 | bool | |
742 | ||
69b02f6a LB |
743 | config PLAT_ORION |
744 | bool | |
745 | ||
bd5ce433 EM |
746 | config PLAT_PXA |
747 | bool | |
748 | ||
1da177e4 LT |
749 | source arch/arm/mm/Kconfig |
750 | ||
afe4b25e LB |
751 | config IWMMXT |
752 | bool "Enable iWMMXt support" | |
40305a58 EM |
753 | depends on CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK |
754 | default y if PXA27x || PXA3xx || ARCH_MMP | |
afe4b25e LB |
755 | help |
756 | Enable support for iWMMXt context switching at run time if | |
757 | running on a CPU that supports it. | |
758 | ||
1da177e4 LT |
759 | # bool 'Use XScale PMU as timer source' CONFIG_XSCALE_PMU_TIMER |
760 | config XSCALE_PMU | |
761 | bool | |
762 | depends on CPU_XSCALE && !XSCALE_PMU_TIMER | |
763 | default y | |
764 | ||
3b93e7b0 HC |
765 | if !MMU |
766 | source "arch/arm/Kconfig-nommu" | |
767 | endif | |
768 | ||
9cba3ccc CM |
769 | config ARM_ERRATA_411920 |
770 | bool "ARM errata: Invalidation of the Instruction Cache operation can fail" | |
771 | depends on CPU_V6 && !SMP | |
772 | help | |
773 | Invalidation of the Instruction Cache operation can | |
774 | fail. This erratum is present in 1136 (before r1p4), 1156 and 1176. | |
775 | It does not affect the MPCore. This option enables the ARM Ltd. | |
776 | recommended workaround. | |
777 | ||
7ce236fc CM |
778 | config ARM_ERRATA_430973 |
779 | bool "ARM errata: Stale prediction on replaced interworking branch" | |
780 | depends on CPU_V7 | |
781 | help | |
782 | This option enables the workaround for the 430973 Cortex-A8 | |
783 | (r1p0..r1p2) erratum. If a code sequence containing an ARM/Thumb | |
784 | interworking branch is replaced with another code sequence at the | |
785 | same virtual address, whether due to self-modifying code or virtual | |
786 | to physical address re-mapping, Cortex-A8 does not recover from the | |
787 | stale interworking branch prediction. This results in Cortex-A8 | |
788 | executing the new code sequence in the incorrect ARM or Thumb state. | |
789 | The workaround enables the BTB/BTAC operations by setting ACTLR.IBE | |
790 | and also flushes the branch target cache at every context switch. | |
791 | Note that setting specific bits in the ACTLR register may not be | |
792 | available in non-secure mode. | |
793 | ||
855c551f CM |
794 | config ARM_ERRATA_458693 |
795 | bool "ARM errata: Processor deadlock when a false hazard is created" | |
796 | depends on CPU_V7 | |
797 | help | |
798 | This option enables the workaround for the 458693 Cortex-A8 (r2p0) | |
799 | erratum. For very specific sequences of memory operations, it is | |
800 | possible for a hazard condition intended for a cache line to instead | |
801 | be incorrectly associated with a different cache line. This false | |
802 | hazard might then cause a processor deadlock. The workaround enables | |
803 | the L1 caching of the NEON accesses and disables the PLD instruction | |
804 | in the ACTLR register. Note that setting specific bits in the ACTLR | |
805 | register may not be available in non-secure mode. | |
806 | ||
0516e464 CM |
807 | config ARM_ERRATA_460075 |
808 | bool "ARM errata: Data written to the L2 cache can be overwritten with stale data" | |
809 | depends on CPU_V7 | |
810 | help | |
811 | This option enables the workaround for the 460075 Cortex-A8 (r2p0) | |
812 | erratum. Any asynchronous access to the L2 cache may encounter a | |
813 | situation in which recent store transactions to the L2 cache are lost | |
814 | and overwritten with stale memory contents from external memory. The | |
815 | workaround disables the write-allocate mode for the L2 cache via the | |
816 | ACTLR register. Note that setting specific bits in the ACTLR register | |
817 | may not be available in non-secure mode. | |
818 | ||
1da177e4 LT |
819 | endmenu |
820 | ||
821 | source "arch/arm/common/Kconfig" | |
822 | ||
823 | config FORCE_MAX_ZONEORDER | |
824 | int | |
825 | depends on SA1111 | |
826 | default "9" | |
827 | ||
828 | menu "Bus support" | |
829 | ||
830 | config ARM_AMBA | |
831 | bool | |
832 | ||
833 | config ISA | |
834 | bool | |
1da177e4 LT |
835 | help |
836 | Find out whether you have ISA slots on your motherboard. ISA is the | |
837 | name of a bus system, i.e. the way the CPU talks to the other stuff | |
838 | inside your box. Other bus systems are PCI, EISA, MicroChannel | |
839 | (MCA) or VESA. ISA is an older system, now being displaced by PCI; | |
840 | newer boards don't support it. If you have ISA, say Y, otherwise N. | |
841 | ||
065909b9 | 842 | # Select ISA DMA controller support |
1da177e4 LT |
843 | config ISA_DMA |
844 | bool | |
065909b9 | 845 | select ISA_DMA_API |
1da177e4 | 846 | |
065909b9 | 847 | # Select ISA DMA interface |
5cae841b AV |
848 | config ISA_DMA_API |
849 | bool | |
5cae841b | 850 | |
1da177e4 | 851 | config PCI |
a0113a99 | 852 | bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB || ARCH_IXP4XX || ARCH_KS8695 || MACH_ARMCORE |
1da177e4 LT |
853 | help |
854 | Find out whether you have a PCI motherboard. PCI is the name of a | |
855 | bus system, i.e. the way the CPU talks to the other stuff inside | |
856 | your box. Other bus systems are ISA, EISA, MicroChannel (MCA) or | |
857 | VESA. If you have PCI, say Y, otherwise N. | |
858 | ||
36e23590 MW |
859 | config PCI_SYSCALL |
860 | def_bool PCI | |
861 | ||
1da177e4 LT |
862 | # Select the host bridge type |
863 | config PCI_HOST_VIA82C505 | |
864 | bool | |
865 | depends on PCI && ARCH_SHARK | |
866 | default y | |
867 | ||
a0113a99 MR |
868 | config PCI_HOST_ITE8152 |
869 | bool | |
870 | depends on PCI && MACH_ARMCORE | |
871 | default y | |
872 | select DMABOUNCE | |
873 | ||
1da177e4 LT |
874 | source "drivers/pci/Kconfig" |
875 | ||
876 | source "drivers/pcmcia/Kconfig" | |
877 | ||
878 | endmenu | |
879 | ||
880 | menu "Kernel Features" | |
881 | ||
0567a0c0 KH |
882 | source "kernel/time/Kconfig" |
883 | ||
1da177e4 LT |
884 | config SMP |
885 | bool "Symmetric Multi-Processing (EXPERIMENTAL)" | |
42578c82 RK |
886 | depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\ |
887 | MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4) | |
bc28248e | 888 | depends on GENERIC_CLOCKEVENTS |
f6dd9fa5 | 889 | select USE_GENERIC_SMP_HELPERS |
934f8be7 | 890 | select HAVE_ARM_SCU if (ARCH_REALVIEW || ARCH_OMAP4) |
1da177e4 LT |
891 | help |
892 | This enables support for systems with more than one CPU. If you have | |
893 | a system with only one CPU, like most personal computers, say N. If | |
894 | you have a system with more than one CPU, say Y. | |
895 | ||
896 | If you say N here, the kernel will run on single and multiprocessor | |
897 | machines, but will use only one CPU of a multiprocessor machine. If | |
898 | you say Y here, the kernel will run on many, but not all, single | |
899 | processor machines. On a single processor machine, the kernel will | |
900 | run faster if you say N here. | |
901 | ||
03502faa | 902 | See also <file:Documentation/i386/IO-APIC.txt>, |
1da177e4 LT |
903 | <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available at |
904 | <http://www.linuxdoc.org/docs.html#howto>. | |
905 | ||
906 | If you don't know what to do here, say N. | |
907 | ||
a8cbcd92 RK |
908 | config HAVE_ARM_SCU |
909 | bool | |
910 | depends on SMP | |
911 | help | |
912 | This option enables support for the ARM system coherency unit | |
913 | ||
f32f4ce2 RK |
914 | config HAVE_ARM_TWD |
915 | bool | |
916 | depends on SMP | |
917 | help | |
918 | This options enables support for the ARM timer and watchdog unit | |
919 | ||
8d5796d2 LB |
920 | choice |
921 | prompt "Memory split" | |
922 | default VMSPLIT_3G | |
923 | help | |
924 | Select the desired split between kernel and user memory. | |
925 | ||
926 | If you are not absolutely sure what you are doing, leave this | |
927 | option alone! | |
928 | ||
929 | config VMSPLIT_3G | |
930 | bool "3G/1G user/kernel split" | |
931 | config VMSPLIT_2G | |
932 | bool "2G/2G user/kernel split" | |
933 | config VMSPLIT_1G | |
934 | bool "1G/3G user/kernel split" | |
935 | endchoice | |
936 | ||
937 | config PAGE_OFFSET | |
938 | hex | |
939 | default 0x40000000 if VMSPLIT_1G | |
940 | default 0x80000000 if VMSPLIT_2G | |
941 | default 0xC0000000 | |
942 | ||
1da177e4 LT |
943 | config NR_CPUS |
944 | int "Maximum number of CPUs (2-32)" | |
945 | range 2 32 | |
946 | depends on SMP | |
947 | default "4" | |
948 | ||
a054a811 RK |
949 | config HOTPLUG_CPU |
950 | bool "Support for hot-pluggable CPUs (EXPERIMENTAL)" | |
951 | depends on SMP && HOTPLUG && EXPERIMENTAL | |
952 | help | |
953 | Say Y here to experiment with turning CPUs off and on. CPUs | |
954 | can be controlled through /sys/devices/system/cpu. | |
955 | ||
37ee16ae RK |
956 | config LOCAL_TIMERS |
957 | bool "Use local timer interrupts" | |
42578c82 RK |
958 | depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \ |
959 | REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4) | |
37ee16ae | 960 | default y |
934f8be7 | 961 | select HAVE_ARM_TWD if (ARCH_REALVIEW || ARCH_OMAP4) |
37ee16ae RK |
962 | help |
963 | Enable support for local timers on SMP platforms, rather then the | |
964 | legacy IPI broadcast method. Local timers allows the system | |
965 | accounting to be spread across the timer interval, preventing a | |
966 | "thundering herd" at every timer tick. | |
967 | ||
d45a398f | 968 | source kernel/Kconfig.preempt |
1da177e4 | 969 | |
f8065813 RK |
970 | config HZ |
971 | int | |
972 | default 128 if ARCH_L7200 | |
973 | default 200 if ARCH_EBSA110 || ARCH_S3C2410 | |
bfe65704 | 974 | default OMAP_32K_TIMER_HZ if ARCH_OMAP && OMAP_32K_TIMER |
5248c657 | 975 | default AT91_TIMER_HZ if ARCH_AT91 |
f8065813 RK |
976 | default 100 |
977 | ||
16c79651 CM |
978 | config THUMB2_KERNEL |
979 | bool "Compile the kernel in Thumb-2 mode" | |
980 | depends on CPU_V7 && EXPERIMENTAL | |
981 | select AEABI | |
982 | select ARM_ASM_UNIFIED | |
983 | help | |
984 | By enabling this option, the kernel will be compiled in | |
985 | Thumb-2 mode. A compiler/assembler that understand the unified | |
986 | ARM-Thumb syntax is needed. | |
987 | ||
988 | If unsure, say N. | |
989 | ||
0becb088 CM |
990 | config ARM_ASM_UNIFIED |
991 | bool | |
992 | ||
704bdda0 NP |
993 | config AEABI |
994 | bool "Use the ARM EABI to compile the kernel" | |
995 | help | |
996 | This option allows for the kernel to be compiled using the latest | |
997 | ARM ABI (aka EABI). This is only useful if you are using a user | |
998 | space environment that is also compiled with EABI. | |
999 | ||
1000 | Since there are major incompatibilities between the legacy ABI and | |
1001 | EABI, especially with regard to structure member alignment, this | |
1002 | option also changes the kernel syscall calling convention to | |
1003 | disambiguate both ABIs and allow for backward compatibility support | |
1004 | (selected with CONFIG_OABI_COMPAT). | |
1005 | ||
1006 | To use this you need GCC version 4.0.0 or later. | |
1007 | ||
6c90c872 | 1008 | config OABI_COMPAT |
a73a3ff1 | 1009 | bool "Allow old ABI binaries to run with this kernel (EXPERIMENTAL)" |
61c484d4 | 1010 | depends on AEABI && EXPERIMENTAL |
6c90c872 NP |
1011 | default y |
1012 | help | |
1013 | This option preserves the old syscall interface along with the | |
1014 | new (ARM EABI) one. It also provides a compatibility layer to | |
1015 | intercept syscalls that have structure arguments which layout | |
1016 | in memory differs between the legacy ABI and the new ARM EABI | |
1017 | (only for non "thumb" binaries). This option adds a tiny | |
1018 | overhead to all syscalls and produces a slightly larger kernel. | |
1019 | If you know you'll be using only pure EABI user space then you | |
1020 | can say N here. If this option is not selected and you attempt | |
1021 | to execute a legacy ABI binary then the result will be | |
1022 | UNPREDICTABLE (in fact it can be predicted that it won't work | |
1023 | at all). If in doubt say Y. | |
1024 | ||
eb33575c | 1025 | config ARCH_HAS_HOLES_MEMORYMODEL |
e80d6a24 | 1026 | bool |
e80d6a24 | 1027 | |
07a2f737 | 1028 | # Discontigmem is deprecated |
3f22ab27 | 1029 | config ARCH_DISCONTIGMEM_ENABLE |
1da177e4 | 1030 | bool |
1da177e4 | 1031 | |
05944d74 RK |
1032 | config ARCH_SPARSEMEM_ENABLE |
1033 | bool | |
1034 | ||
07a2f737 RK |
1035 | config ARCH_SPARSEMEM_DEFAULT |
1036 | def_bool ARCH_SPARSEMEM_ENABLE | |
1037 | ||
05944d74 | 1038 | config ARCH_SELECT_MEMORY_MODEL |
07a2f737 | 1039 | def_bool ARCH_DISCONTIGMEM_ENABLE && ARCH_SPARSEMEM_ENABLE |
05944d74 | 1040 | |
c80d79d7 YG |
1041 | config NODES_SHIFT |
1042 | int | |
1043 | default "4" if ARCH_LH7A40X | |
1044 | default "2" | |
1045 | depends on NEED_MULTIPLE_NODES | |
1046 | ||
053a96ca NP |
1047 | config HIGHMEM |
1048 | bool "High Memory Support (EXPERIMENTAL)" | |
1049 | depends on MMU && EXPERIMENTAL | |
1050 | help | |
1051 | The address space of ARM processors is only 4 Gigabytes large | |
1052 | and it has to accommodate user address space, kernel address | |
1053 | space as well as some memory mapped IO. That means that, if you | |
1054 | have a large amount of physical memory and/or IO, not all of the | |
1055 | memory can be "permanently mapped" by the kernel. The physical | |
1056 | memory that is not permanently mapped is called "high memory". | |
1057 | ||
1058 | Depending on the selected kernel/user memory split, minimum | |
1059 | vmalloc space and actual amount of RAM, you may not need this | |
1060 | option which should result in a slightly faster kernel. | |
1061 | ||
1062 | If unsure, say n. | |
1063 | ||
3f22ab27 DH |
1064 | source "mm/Kconfig" |
1065 | ||
1da177e4 LT |
1066 | config LEDS |
1067 | bool "Timer and CPU usage LEDs" | |
e055d5bf | 1068 | depends on ARCH_CDB89712 || ARCH_EBSA110 || \ |
8c8fdbc9 | 1069 | ARCH_EBSA285 || ARCH_INTEGRATOR || \ |
1da177e4 LT |
1070 | ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \ |
1071 | ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \ | |
73a59c1c | 1072 | ARCH_SA1100 || ARCH_SHARK || ARCH_VERSATILE || \ |
25329671 | 1073 | ARCH_AT91 || ARCH_DAVINCI || \ |
ff3042fb | 1074 | ARCH_KS8695 || MACH_RD88F5182 || ARCH_REALVIEW |
1da177e4 LT |
1075 | help |
1076 | If you say Y here, the LEDs on your machine will be used | |
1077 | to provide useful information about your current system status. | |
1078 | ||
1079 | If you are compiling a kernel for a NetWinder or EBSA-285, you will | |
1080 | be able to select which LEDs are active using the options below. If | |
1081 | you are compiling a kernel for the EBSA-110 or the LART however, the | |
1082 | red LED will simply flash regularly to indicate that the system is | |
1083 | still functional. It is safe to say Y here if you have a CATS | |
1084 | system, but the driver will do nothing. | |
1085 | ||
1086 | config LEDS_TIMER | |
1087 | bool "Timer LED" if (!ARCH_CDB89712 && !ARCH_OMAP) || \ | |
eebdf7d7 DB |
1088 | OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ |
1089 | || MACH_OMAP_PERSEUS2 | |
1da177e4 | 1090 | depends on LEDS |
0567a0c0 | 1091 | depends on !GENERIC_CLOCKEVENTS |
1da177e4 LT |
1092 | default y if ARCH_EBSA110 |
1093 | help | |
1094 | If you say Y here, one of the system LEDs (the green one on the | |
1095 | NetWinder, the amber one on the EBSA285, or the red one on the LART) | |
1096 | will flash regularly to indicate that the system is still | |
1097 | operational. This is mainly useful to kernel hackers who are | |
1098 | debugging unstable kernels. | |
1099 | ||
1100 | The LART uses the same LED for both Timer LED and CPU usage LED | |
1101 | functions. You may choose to use both, but the Timer LED function | |
1102 | will overrule the CPU usage LED. | |
1103 | ||
1104 | config LEDS_CPU | |
1105 | bool "CPU usage LED" if (!ARCH_CDB89712 && !ARCH_EBSA110 && \ | |
eebdf7d7 DB |
1106 | !ARCH_OMAP) \ |
1107 | || OMAP_OSK_MISTRAL || MACH_OMAP_H2 \ | |
1108 | || MACH_OMAP_PERSEUS2 | |
1da177e4 LT |
1109 | depends on LEDS |
1110 | help | |
1111 | If you say Y here, the red LED will be used to give a good real | |
1112 | time indication of CPU usage, by lighting whenever the idle task | |
1113 | is not currently executing. | |
1114 | ||
1115 | The LART uses the same LED for both Timer LED and CPU usage LED | |
1116 | functions. You may choose to use both, but the Timer LED function | |
1117 | will overrule the CPU usage LED. | |
1118 | ||
1119 | config ALIGNMENT_TRAP | |
1120 | bool | |
f12d0d7c | 1121 | depends on CPU_CP15_MMU |
1da177e4 LT |
1122 | default y if !ARCH_EBSA110 |
1123 | help | |
84eb8d06 | 1124 | ARM processors cannot fetch/store information which is not |
1da177e4 LT |
1125 | naturally aligned on the bus, i.e., a 4 byte fetch must start at an |
1126 | address divisible by 4. On 32-bit ARM processors, these non-aligned | |
1127 | fetch/store instructions will be emulated in software if you say | |
1128 | here, which has a severe performance impact. This is necessary for | |
1129 | correct operation of some network protocols. With an IP-only | |
1130 | configuration it is safe to say N, otherwise say Y. | |
1131 | ||
39ec58f3 LB |
1132 | config UACCESS_WITH_MEMCPY |
1133 | bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user() (EXPERIMENTAL)" | |
1134 | depends on MMU && EXPERIMENTAL | |
1135 | default y if CPU_FEROCEON | |
1136 | help | |
1137 | Implement faster copy_to_user and clear_user methods for CPU | |
1138 | cores where a 8-word STM instruction give significantly higher | |
1139 | memory write throughput than a sequence of individual 32bit stores. | |
1140 | ||
1141 | A possible side effect is a slight increase in scheduling latency | |
1142 | between threads sharing the same address space if they invoke | |
1143 | such copy operations with large buffers. | |
1144 | ||
1145 | However, if the CPU data cache is using a write-allocate mode, | |
1146 | this option is unlikely to provide any performance gain. | |
1147 | ||
1da177e4 LT |
1148 | endmenu |
1149 | ||
1150 | menu "Boot options" | |
1151 | ||
1152 | # Compressed boot loader in ROM. Yes, we really want to ask about | |
1153 | # TEXT and BSS so we preserve their values in the config files. | |
1154 | config ZBOOT_ROM_TEXT | |
1155 | hex "Compressed ROM boot loader base address" | |
1156 | default "0" | |
1157 | help | |
1158 | The physical address at which the ROM-able zImage is to be | |
1159 | placed in the target. Platforms which normally make use of | |
1160 | ROM-able zImage formats normally set this to a suitable | |
1161 | value in their defconfig file. | |
1162 | ||
1163 | If ZBOOT_ROM is not enabled, this has no effect. | |
1164 | ||
1165 | config ZBOOT_ROM_BSS | |
1166 | hex "Compressed ROM boot loader BSS address" | |
1167 | default "0" | |
1168 | help | |
f8c440b2 DF |
1169 | The base address of an area of read/write memory in the target |
1170 | for the ROM-able zImage which must be available while the | |
1171 | decompressor is running. It must be large enough to hold the | |
1172 | entire decompressed kernel plus an additional 128 KiB. | |
1173 | Platforms which normally make use of ROM-able zImage formats | |
1174 | normally set this to a suitable value in their defconfig file. | |
1da177e4 LT |
1175 | |
1176 | If ZBOOT_ROM is not enabled, this has no effect. | |
1177 | ||
1178 | config ZBOOT_ROM | |
1179 | bool "Compressed boot loader in ROM/flash" | |
1180 | depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS | |
1181 | help | |
1182 | Say Y here if you intend to execute your compressed kernel image | |
1183 | (zImage) directly from ROM or flash. If unsure, say N. | |
1184 | ||
1185 | config CMDLINE | |
1186 | string "Default kernel command string" | |
1187 | default "" | |
1188 | help | |
1189 | On some architectures (EBSA110 and CATS), there is currently no way | |
1190 | for the boot loader to pass arguments to the kernel. For these | |
1191 | architectures, you should supply some command-line options at build | |
1192 | time by entering them here. As a minimum, you should specify the | |
1193 | memory size and the root device (e.g., mem=64M root=/dev/nfs). | |
1194 | ||
1195 | config XIP_KERNEL | |
1196 | bool "Kernel Execute-In-Place from ROM" | |
1197 | depends on !ZBOOT_ROM | |
1198 | help | |
1199 | Execute-In-Place allows the kernel to run from non-volatile storage | |
1200 | directly addressable by the CPU, such as NOR flash. This saves RAM | |
1201 | space since the text section of the kernel is not loaded from flash | |
1202 | to RAM. Read-write sections, such as the data section and stack, | |
1203 | are still copied to RAM. The XIP kernel is not compressed since | |
1204 | it has to run directly from flash, so it will take more space to | |
1205 | store it. The flash address used to link the kernel object files, | |
1206 | and for storing it, is configuration dependent. Therefore, if you | |
1207 | say Y here, you must know the proper physical address where to | |
1208 | store the kernel image depending on your own flash memory usage. | |
1209 | ||
1210 | Also note that the make target becomes "make xipImage" rather than | |
1211 | "make zImage" or "make Image". The final kernel binary to put in | |
1212 | ROM memory will be arch/arm/boot/xipImage. | |
1213 | ||
1214 | If unsure, say N. | |
1215 | ||
1216 | config XIP_PHYS_ADDR | |
1217 | hex "XIP Kernel Physical Location" | |
1218 | depends on XIP_KERNEL | |
1219 | default "0x00080000" | |
1220 | help | |
1221 | This is the physical address in your flash memory the kernel will | |
1222 | be linked for and stored to. This address is dependent on your | |
1223 | own flash usage. | |
1224 | ||
c587e4a6 RP |
1225 | config KEXEC |
1226 | bool "Kexec system call (EXPERIMENTAL)" | |
1227 | depends on EXPERIMENTAL | |
1228 | help | |
1229 | kexec is a system call that implements the ability to shutdown your | |
1230 | current kernel, and to start another kernel. It is like a reboot | |
01dd2fbf | 1231 | but it is independent of the system firmware. And like a reboot |
c587e4a6 RP |
1232 | you can start any kernel with it, not just Linux. |
1233 | ||
1234 | It is an ongoing process to be certain the hardware in a machine | |
1235 | is properly shutdown, so do not be surprised if this code does not | |
1236 | initially work for you. It may help to enable device hotplugging | |
1237 | support. | |
1238 | ||
4cd9d6f7 RP |
1239 | config ATAGS_PROC |
1240 | bool "Export atags in procfs" | |
b98d7291 UL |
1241 | depends on KEXEC |
1242 | default y | |
4cd9d6f7 RP |
1243 | help |
1244 | Should the atags used to boot the kernel be exported in an "atags" | |
1245 | file in procfs. Useful with kexec. | |
1246 | ||
1da177e4 LT |
1247 | endmenu |
1248 | ||
ac9d7efc | 1249 | menu "CPU Power Management" |
1da177e4 | 1250 | |
b3748ddd | 1251 | if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_PXA || ARCH_S3C64XX) |
1da177e4 LT |
1252 | |
1253 | source "drivers/cpufreq/Kconfig" | |
1254 | ||
1255 | config CPU_FREQ_SA1100 | |
1256 | bool | |
7bc35b56 | 1257 | depends on CPU_FREQ && (SA1100_H3100 || SA1100_H3600 || SA1100_LART || SA1100_PLEB || SA1100_BADGE4 || SA1100_HACKKIT) |
1da177e4 LT |
1258 | default y |
1259 | ||
1260 | config CPU_FREQ_SA1110 | |
1261 | bool | |
1262 | depends on CPU_FREQ && (SA1100_ASSABET || SA1100_CERF || SA1100_PT_SYSTEM3) | |
1263 | default y | |
1264 | ||
1265 | config CPU_FREQ_INTEGRATOR | |
1266 | tristate "CPUfreq driver for ARM Integrator CPUs" | |
1267 | depends on ARCH_INTEGRATOR && CPU_FREQ | |
1268 | default y | |
1269 | help | |
1270 | This enables the CPUfreq driver for ARM Integrator CPUs. | |
1271 | ||
1272 | For details, take a look at <file:Documentation/cpu-freq>. | |
1273 | ||
1274 | If in doubt, say Y. | |
1275 | ||
9e2697ff RK |
1276 | config CPU_FREQ_PXA |
1277 | bool | |
1278 | depends on CPU_FREQ && ARCH_PXA && PXA25x | |
1279 | default y | |
1280 | select CPU_FREQ_DEFAULT_GOV_USERSPACE | |
1281 | ||
b3748ddd MB |
1282 | config CPU_FREQ_S3C64XX |
1283 | bool "CPUfreq support for Samsung S3C64XX CPUs" | |
1284 | depends on CPU_FREQ && CPU_S3C6410 | |
1285 | ||
1da177e4 LT |
1286 | endif |
1287 | ||
ac9d7efc RK |
1288 | source "drivers/cpuidle/Kconfig" |
1289 | ||
1290 | endmenu | |
1291 | ||
1da177e4 LT |
1292 | menu "Floating point emulation" |
1293 | ||
1294 | comment "At least one emulation must be selected" | |
1295 | ||
1296 | config FPE_NWFPE | |
1297 | bool "NWFPE math emulation" | |
8993a44c | 1298 | depends on !AEABI || OABI_COMPAT |
1da177e4 LT |
1299 | ---help--- |
1300 | Say Y to include the NWFPE floating point emulator in the kernel. | |
1301 | This is necessary to run most binaries. Linux does not currently | |
1302 | support floating point hardware so you need to say Y here even if | |
1303 | your machine has an FPA or floating point co-processor podule. | |
1304 | ||
1305 | You may say N here if you are going to load the Acorn FPEmulator | |
1306 | early in the bootup. | |
1307 | ||
1308 | config FPE_NWFPE_XP | |
1309 | bool "Support extended precision" | |
bedf142b | 1310 | depends on FPE_NWFPE |
1da177e4 LT |
1311 | help |
1312 | Say Y to include 80-bit support in the kernel floating-point | |
1313 | emulator. Otherwise, only 32 and 64-bit support is compiled in. | |
1314 | Note that gcc does not generate 80-bit operations by default, | |
1315 | so in most cases this option only enlarges the size of the | |
1316 | floating point emulator without any good reason. | |
1317 | ||
1318 | You almost surely want to say N here. | |
1319 | ||
1320 | config FPE_FASTFPE | |
1321 | bool "FastFPE math emulation (EXPERIMENTAL)" | |
8993a44c | 1322 | depends on (!AEABI || OABI_COMPAT) && !CPU_32v3 && EXPERIMENTAL |
1da177e4 LT |
1323 | ---help--- |
1324 | Say Y here to include the FAST floating point emulator in the kernel. | |
1325 | This is an experimental much faster emulator which now also has full | |
1326 | precision for the mantissa. It does not support any exceptions. | |
1327 | It is very simple, and approximately 3-6 times faster than NWFPE. | |
1328 | ||
1329 | It should be sufficient for most programs. It may be not suitable | |
1330 | for scientific calculations, but you have to check this for yourself. | |
1331 | If you do not feel you need a faster FP emulation you should better | |
1332 | choose NWFPE. | |
1333 | ||
1334 | config VFP | |
1335 | bool "VFP-format floating point maths" | |
c00d4ffd | 1336 | depends on CPU_V6 || CPU_ARM926T || CPU_V7 || CPU_FEROCEON |
1da177e4 LT |
1337 | help |
1338 | Say Y to include VFP support code in the kernel. This is needed | |
1339 | if your hardware includes a VFP unit. | |
1340 | ||
1341 | Please see <file:Documentation/arm/VFP/release-notes.txt> for | |
1342 | release notes and additional status information. | |
1343 | ||
1344 | Say N if your target does not have VFP hardware. | |
1345 | ||
25ebee02 CM |
1346 | config VFPv3 |
1347 | bool | |
1348 | depends on VFP | |
1349 | default y if CPU_V7 | |
1350 | ||
b5872db4 CM |
1351 | config NEON |
1352 | bool "Advanced SIMD (NEON) Extension support" | |
1353 | depends on VFPv3 && CPU_V7 | |
1354 | help | |
1355 | Say Y to include support code for NEON, the ARMv7 Advanced SIMD | |
1356 | Extension. | |
1357 | ||
1da177e4 LT |
1358 | endmenu |
1359 | ||
1360 | menu "Userspace binary formats" | |
1361 | ||
1362 | source "fs/Kconfig.binfmt" | |
1363 | ||
1364 | config ARTHUR | |
1365 | tristate "RISC OS personality" | |
704bdda0 | 1366 | depends on !AEABI |
1da177e4 LT |
1367 | help |
1368 | Say Y here to include the kernel code necessary if you want to run | |
1369 | Acorn RISC OS/Arthur binaries under Linux. This code is still very | |
1370 | experimental; if this sounds frightening, say N and sleep in peace. | |
1371 | You can also say M here to compile this support as a module (which | |
1372 | will be called arthur). | |
1373 | ||
1374 | endmenu | |
1375 | ||
1376 | menu "Power management options" | |
1377 | ||
eceab4ac | 1378 | source "kernel/power/Kconfig" |
1da177e4 | 1379 | |
f4cb5700 JB |
1380 | config ARCH_SUSPEND_POSSIBLE |
1381 | def_bool y | |
1382 | ||
1da177e4 LT |
1383 | endmenu |
1384 | ||
d5950b43 SR |
1385 | source "net/Kconfig" |
1386 | ||
ac25150f | 1387 | source "drivers/Kconfig" |
1da177e4 LT |
1388 | |
1389 | source "fs/Kconfig" | |
1390 | ||
1da177e4 LT |
1391 | source "arch/arm/Kconfig.debug" |
1392 | ||
1393 | source "security/Kconfig" | |
1394 | ||
1395 | source "crypto/Kconfig" | |
1396 | ||
1397 | source "lib/Kconfig" |