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/SuperH Kernel Configuration" | |
7 | ||
8 | config SUPERH | |
ea0e1a9a | 9 | def_bool y |
7a440c95 | 10 | select EMBEDDED |
9483a578 | 11 | select HAVE_CLK |
ec7748b5 | 12 | select HAVE_IDE |
42d4b839 | 13 | select HAVE_OPROFILE |
9de90ac2 | 14 | select HAVE_GENERIC_DMA_COHERENT |
21944781 | 15 | select HAVE_IOREMAP_PROT if MMU |
d7b01f78 | 16 | select HAVE_ARCH_TRACEHOOK |
f802d969 | 17 | select HAVE_DMA_API_DEBUG |
1da177e4 LT |
18 | help |
19 | The SuperH is a RISC processor targeted for use in embedded systems | |
20 | and consumer electronics; it was also used in the Sega Dreamcast | |
21 | gaming console. The SuperH port has a home page at | |
22 | <http://www.linux-sh.org/>. | |
23 | ||
39d28a2d | 24 | config SUPERH32 |
3cc000b5 | 25 | def_bool ARCH = "sh" |
d39f5450 CS |
26 | select HAVE_KPROBES |
27 | select HAVE_KRETPROBES | |
694f94f2 | 28 | select HAVE_FUNCTION_TRACER |
fad57feb MF |
29 | select HAVE_FTRACE_MCOUNT_RECORD |
30 | select HAVE_DYNAMIC_FTRACE | |
ab6e570b | 31 | select HAVE_ARCH_KGDB |
8dafc346 | 32 | select ARCH_HIBERNATION_POSSIBLE if MMU |
ea0e1a9a PM |
33 | |
34 | config SUPERH64 | |
3cc000b5 | 35 | def_bool ARCH = "sh64" |
39d28a2d | 36 | |
f42b7e3d PM |
37 | config ARCH_DEFCONFIG |
38 | string | |
39 | default "arch/sh/configs/shx3_defconfig" if SUPERH32 | |
40 | default "arch/sh/configs/cayman_defconfig" if SUPERH64 | |
41 | ||
1da177e4 | 42 | config RWSEM_GENERIC_SPINLOCK |
d7ef4fb3 | 43 | def_bool y |
1da177e4 LT |
44 | |
45 | config RWSEM_XCHGADD_ALGORITHM | |
46 | bool | |
47 | ||
fa691511 PM |
48 | config GENERIC_BUG |
49 | def_bool y | |
a82d53ec | 50 | depends on BUG && SUPERH32 |
fa691511 | 51 | |
e2268c71 | 52 | config GENERIC_FIND_NEXT_BIT |
d7ef4fb3 | 53 | def_bool y |
e2268c71 AM |
54 | |
55 | config GENERIC_HWEIGHT | |
d7ef4fb3 | 56 | def_bool y |
e2268c71 | 57 | |
1da177e4 | 58 | config GENERIC_HARDIRQS |
d7ef4fb3 | 59 | def_bool y |
1da177e4 | 60 | |
5093c9a4 PM |
61 | config GENERIC_HARDIRQS_NO__DO_IRQ |
62 | def_bool y | |
63 | ||
1da177e4 | 64 | config GENERIC_IRQ_PROBE |
d7ef4fb3 | 65 | def_bool y |
1da177e4 | 66 | |
2967dab1 MD |
67 | config GENERIC_GPIO |
68 | def_bool n | |
69 | ||
1da177e4 | 70 | config GENERIC_CALIBRATE_DELAY |
cf204fa7 | 71 | bool |
1da177e4 | 72 | |
cad82448 PM |
73 | config GENERIC_IOMAP |
74 | bool | |
75 | ||
45882145 PM |
76 | config GENERIC_TIME |
77 | def_bool n | |
78 | ||
57be2b48 PM |
79 | config GENERIC_CLOCKEVENTS |
80 | def_bool n | |
81 | ||
8c24594d PM |
82 | config GENERIC_CLOCKEVENTS_BROADCAST |
83 | bool | |
84 | ||
bdcab87b PM |
85 | config GENERIC_LOCKBREAK |
86 | def_bool y | |
87 | depends on SMP && PREEMPT | |
88 | ||
357d5946 PM |
89 | config SYS_SUPPORTS_PM |
90 | bool | |
af998a9a MD |
91 | depends on !SMP |
92 | ||
93 | config ARCH_SUSPEND_POSSIBLE | |
94 | def_bool n | |
95 | ||
96 | config ARCH_HIBERNATION_POSSIBLE | |
97 | def_bool n | |
357d5946 | 98 | |
0a9b0db1 PM |
99 | config SYS_SUPPORTS_APM_EMULATION |
100 | bool | |
af998a9a | 101 | select ARCH_SUSPEND_POSSIBLE |
357d5946 PM |
102 | |
103 | config SYS_SUPPORTS_SMP | |
104 | bool | |
105 | ||
106 | config SYS_SUPPORTS_NUMA | |
107 | bool | |
108 | ||
109 | config SYS_SUPPORTS_PCI | |
110 | bool | |
0a9b0db1 | 111 | |
f5ad881b PM |
112 | config SYS_SUPPORTS_CMT |
113 | bool | |
114 | ||
afbfb52e | 115 | config STACKTRACE_SUPPORT |
d7ef4fb3 | 116 | def_bool y |
afbfb52e PM |
117 | |
118 | config LOCKDEP_SUPPORT | |
d7ef4fb3 | 119 | def_bool y |
afbfb52e | 120 | |
5a89f1ad PM |
121 | config HAVE_LATENCYTOP_SUPPORT |
122 | def_bool y | |
123 | depends on !SMP | |
124 | ||
f0d1b0b3 | 125 | config ARCH_HAS_ILOG2_U32 |
d7ef4fb3 | 126 | def_bool n |
f0d1b0b3 DH |
127 | |
128 | config ARCH_HAS_ILOG2_U64 | |
d7ef4fb3 | 129 | def_bool n |
f0d1b0b3 | 130 | |
e257ad06 PM |
131 | config ARCH_NO_VIRT_TO_BUS |
132 | def_bool y | |
133 | ||
e869a90e PM |
134 | config ARCH_HAS_DEFAULT_IDLE |
135 | def_bool y | |
136 | ||
e7cc9a73 MD |
137 | config IO_TRAPPED |
138 | bool | |
139 | ||
1da177e4 LT |
140 | source "init/Kconfig" |
141 | ||
dc52ddc0 MH |
142 | source "kernel/Kconfig.freezer" |
143 | ||
1da177e4 LT |
144 | menu "System type" |
145 | ||
b5f42db0 PM |
146 | # |
147 | # Processor families | |
148 | # | |
149 | config CPU_SH2 | |
150 | bool | |
151 | ||
152 | config CPU_SH2A | |
153 | bool | |
154 | select CPU_SH2 | |
155 | ||
156 | config CPU_SH3 | |
157 | bool | |
158 | select CPU_HAS_INTEVT | |
159 | select CPU_HAS_SR_RB | |
160 | ||
161 | config CPU_SH4 | |
162 | bool | |
163 | select CPU_HAS_INTEVT | |
164 | select CPU_HAS_SR_RB | |
165 | select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2 | |
166 | select CPU_HAS_FPU if !CPU_SH4AL_DSP | |
167 | ||
168 | config CPU_SH4A | |
169 | bool | |
170 | select CPU_SH4 | |
171 | ||
172 | config CPU_SH4AL_DSP | |
173 | bool | |
174 | select CPU_SH4A | |
175 | select CPU_HAS_DSP | |
176 | ||
ea0e1a9a PM |
177 | config CPU_SH5 |
178 | bool | |
179 | select CPU_HAS_FPU | |
180 | ||
b5f42db0 PM |
181 | config CPU_SHX2 |
182 | bool | |
183 | ||
184 | config CPU_SHX3 | |
185 | bool | |
186 | ||
dc65a977 PM |
187 | config ARCH_SHMOBILE |
188 | bool | |
77594912 | 189 | select ARCH_SUSPEND_POSSIBLE |
dc65a977 | 190 | |
3cc000b5 PM |
191 | if SUPERH32 |
192 | ||
b5f42db0 PM |
193 | choice |
194 | prompt "Processor sub-type selection" | |
195 | ||
196 | # | |
197 | # Processor subtypes | |
198 | # | |
199 | ||
200 | # SH-2 Processor Support | |
201 | ||
202 | config CPU_SUBTYPE_SH7619 | |
203 | bool "Support SH7619 processor" | |
204 | select CPU_SH2 | |
f5ad881b | 205 | select SYS_SUPPORTS_CMT |
b5f42db0 PM |
206 | |
207 | # SH-2A Processor Support | |
208 | ||
2825999e PG |
209 | config CPU_SUBTYPE_SH7201 |
210 | bool "Support SH7201 processor" | |
211 | select CPU_SH2A | |
212 | select CPU_HAS_FPU | |
213 | ||
6d01f510 PM |
214 | config CPU_SUBTYPE_SH7203 |
215 | bool "Support SH7203 processor" | |
216 | select CPU_SH2A | |
74d99a5e | 217 | select CPU_HAS_FPU |
f5ad881b | 218 | select SYS_SUPPORTS_CMT |
6d01f510 | 219 | |
b5f42db0 PM |
220 | config CPU_SUBTYPE_SH7206 |
221 | bool "Support SH7206 processor" | |
222 | select CPU_SH2A | |
f5ad881b | 223 | select SYS_SUPPORTS_CMT |
b5f42db0 | 224 | |
a8f67f4b PM |
225 | config CPU_SUBTYPE_SH7263 |
226 | bool "Support SH7263 processor" | |
227 | select CPU_SH2A | |
74d99a5e | 228 | select CPU_HAS_FPU |
f5ad881b | 229 | select SYS_SUPPORTS_CMT |
a8f67f4b | 230 | |
2ad69908 PM |
231 | config CPU_SUBTYPE_MXG |
232 | bool "Support MX-G processor" | |
233 | select CPU_SH2A | |
234 | help | |
235 | Select MX-G if running on an R8A03022BG part. | |
236 | ||
b5f42db0 PM |
237 | # SH-3 Processor Support |
238 | ||
239 | config CPU_SUBTYPE_SH7705 | |
240 | bool "Support SH7705 processor" | |
241 | select CPU_SH3 | |
242 | ||
243 | config CPU_SUBTYPE_SH7706 | |
244 | bool "Support SH7706 processor" | |
245 | select CPU_SH3 | |
246 | help | |
247 | Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU. | |
248 | ||
249 | config CPU_SUBTYPE_SH7707 | |
250 | bool "Support SH7707 processor" | |
251 | select CPU_SH3 | |
252 | help | |
253 | Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU. | |
254 | ||
255 | config CPU_SUBTYPE_SH7708 | |
256 | bool "Support SH7708 processor" | |
257 | select CPU_SH3 | |
258 | help | |
259 | Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or | |
260 | if you have a 100 Mhz SH-3 HD6417708R CPU. | |
261 | ||
262 | config CPU_SUBTYPE_SH7709 | |
263 | bool "Support SH7709 processor" | |
264 | select CPU_SH3 | |
265 | help | |
266 | Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU. | |
267 | ||
268 | config CPU_SUBTYPE_SH7710 | |
269 | bool "Support SH7710 processor" | |
270 | select CPU_SH3 | |
271 | select CPU_HAS_DSP | |
272 | help | |
273 | Select SH7710 if you have a SH3-DSP SH7710 CPU. | |
274 | ||
275 | config CPU_SUBTYPE_SH7712 | |
276 | bool "Support SH7712 processor" | |
277 | select CPU_SH3 | |
278 | select CPU_HAS_DSP | |
279 | help | |
280 | Select SH7712 if you have a SH3-DSP SH7712 CPU. | |
281 | ||
282 | config CPU_SUBTYPE_SH7720 | |
283 | bool "Support SH7720 processor" | |
284 | select CPU_SH3 | |
285 | select CPU_HAS_DSP | |
286 | help | |
287 | Select SH7720 if you have a SH3-DSP SH7720 CPU. | |
288 | ||
31a49c4b YS |
289 | config CPU_SUBTYPE_SH7721 |
290 | bool "Support SH7721 processor" | |
291 | select CPU_SH3 | |
292 | select CPU_HAS_DSP | |
293 | help | |
294 | Select SH7721 if you have a SH3-DSP SH7721 CPU. | |
295 | ||
b5f42db0 PM |
296 | # SH-4 Processor Support |
297 | ||
298 | config CPU_SUBTYPE_SH7750 | |
299 | bool "Support SH7750 processor" | |
300 | select CPU_SH4 | |
301 | help | |
302 | Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU. | |
303 | ||
304 | config CPU_SUBTYPE_SH7091 | |
305 | bool "Support SH7091 processor" | |
306 | select CPU_SH4 | |
307 | help | |
308 | Select SH7091 if you have an SH-4 based Sega device (such as | |
309 | the Dreamcast, Naomi, and Naomi 2). | |
310 | ||
311 | config CPU_SUBTYPE_SH7750R | |
312 | bool "Support SH7750R processor" | |
313 | select CPU_SH4 | |
314 | ||
315 | config CPU_SUBTYPE_SH7750S | |
316 | bool "Support SH7750S processor" | |
317 | select CPU_SH4 | |
318 | ||
319 | config CPU_SUBTYPE_SH7751 | |
320 | bool "Support SH7751 processor" | |
321 | select CPU_SH4 | |
322 | help | |
323 | Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU, | |
324 | or if you have a HD6417751R CPU. | |
325 | ||
326 | config CPU_SUBTYPE_SH7751R | |
327 | bool "Support SH7751R processor" | |
328 | select CPU_SH4 | |
329 | ||
330 | config CPU_SUBTYPE_SH7760 | |
331 | bool "Support SH7760 processor" | |
332 | select CPU_SH4 | |
333 | ||
334 | config CPU_SUBTYPE_SH4_202 | |
335 | bool "Support SH4-202 processor" | |
336 | select CPU_SH4 | |
337 | ||
338 | # SH-4A Processor Support | |
339 | ||
178dd0cd PM |
340 | config CPU_SUBTYPE_SH7723 |
341 | bool "Support SH7723 processor" | |
342 | select CPU_SH4A | |
343 | select CPU_SHX2 | |
dc65a977 | 344 | select ARCH_SHMOBILE |
178dd0cd | 345 | select ARCH_SPARSEMEM_ENABLE |
f5ad881b | 346 | select SYS_SUPPORTS_CMT |
178dd0cd PM |
347 | help |
348 | Select SH7723 if you have an SH-MobileR2 CPU. | |
349 | ||
7d740a06 YS |
350 | config CPU_SUBTYPE_SH7763 |
351 | bool "Support SH7763 processor" | |
352 | select CPU_SH4A | |
353 | help | |
354 | Select SH7763 if you have a SH4A SH7763(R5S77631) CPU. | |
355 | ||
b5f42db0 PM |
356 | config CPU_SUBTYPE_SH7770 |
357 | bool "Support SH7770 processor" | |
358 | select CPU_SH4A | |
359 | ||
360 | config CPU_SUBTYPE_SH7780 | |
361 | bool "Support SH7780 processor" | |
362 | select CPU_SH4A | |
363 | ||
364 | config CPU_SUBTYPE_SH7785 | |
365 | bool "Support SH7785 processor" | |
366 | select CPU_SH4A | |
367 | select CPU_SHX2 | |
55ba99eb KM |
368 | select ARCH_SPARSEMEM_ENABLE |
369 | select SYS_SUPPORTS_NUMA | |
370 | ||
371 | config CPU_SUBTYPE_SH7786 | |
372 | bool "Support SH7786 processor" | |
373 | select CPU_SH4A | |
37042fbd | 374 | select CPU_SHX3 |
8263a67e | 375 | select CPU_HAS_PTEAEX |
b5f42db0 PM |
376 | select ARCH_SPARSEMEM_ENABLE |
377 | select SYS_SUPPORTS_NUMA | |
378 | ||
379 | config CPU_SUBTYPE_SHX3 | |
380 | bool "Support SH-X3 processor" | |
381 | select CPU_SH4A | |
382 | select CPU_SHX3 | |
383 | select ARCH_SPARSEMEM_ENABLE | |
384 | select SYS_SUPPORTS_NUMA | |
385 | select SYS_SUPPORTS_SMP | |
5840263e | 386 | select GENERIC_CLOCKEVENTS_BROADCAST if SMP |
b5f42db0 PM |
387 | |
388 | # SH4AL-DSP Processor Support | |
389 | ||
390 | config CPU_SUBTYPE_SH7343 | |
391 | bool "Support SH7343 processor" | |
392 | select CPU_SH4AL_DSP | |
dc65a977 | 393 | select ARCH_SHMOBILE |
f5ad881b | 394 | select SYS_SUPPORTS_CMT |
b5f42db0 PM |
395 | |
396 | config CPU_SUBTYPE_SH7722 | |
397 | bool "Support SH7722 processor" | |
398 | select CPU_SH4AL_DSP | |
399 | select CPU_SHX2 | |
dc65a977 | 400 | select ARCH_SHMOBILE |
b5f42db0 PM |
401 | select ARCH_SPARSEMEM_ENABLE |
402 | select SYS_SUPPORTS_NUMA | |
f5ad881b | 403 | select SYS_SUPPORTS_CMT |
9109a30e MD |
404 | |
405 | config CPU_SUBTYPE_SH7366 | |
406 | bool "Support SH7366 processor" | |
407 | select CPU_SH4AL_DSP | |
408 | select CPU_SHX2 | |
dc65a977 | 409 | select ARCH_SHMOBILE |
9109a30e MD |
410 | select ARCH_SPARSEMEM_ENABLE |
411 | select SYS_SUPPORTS_NUMA | |
f5ad881b | 412 | select SYS_SUPPORTS_CMT |
b5f42db0 | 413 | |
3cc000b5 PM |
414 | endchoice |
415 | ||
416 | endif | |
417 | ||
418 | if SUPERH64 | |
419 | ||
420 | choice | |
421 | prompt "Processor sub-type selection" | |
422 | ||
ea0e1a9a PM |
423 | # SH-5 Processor Support |
424 | ||
425 | config CPU_SUBTYPE_SH5_101 | |
426 | bool "Support SH5-101 processor" | |
427 | select CPU_SH5 | |
428 | ||
429 | config CPU_SUBTYPE_SH5_103 | |
430 | bool "Support SH5-103 processor" | |
8ef97dd7 | 431 | select CPU_SH5 |
ea0e1a9a | 432 | |
b5f42db0 PM |
433 | endchoice |
434 | ||
3cc000b5 PM |
435 | endif |
436 | ||
f3d22298 | 437 | source "arch/sh/mm/Kconfig" |
939a24a6 | 438 | |
4690bdc7 | 439 | source "arch/sh/Kconfig.cpu" |
f3d22298 | 440 | |
939a24a6 | 441 | source "arch/sh/boards/Kconfig" |
32351a28 | 442 | |
32351a28 PM |
443 | menu "Timer and clock configuration" |
444 | ||
cad82448 | 445 | config SH_TMU |
f5ad881b | 446 | bool "TMU timer support" |
9d4436a6 | 447 | depends on CPU_SH3 || CPU_SH4 |
f5ad881b | 448 | default y |
57be2b48 PM |
449 | select GENERIC_TIME |
450 | select GENERIC_CLOCKEVENTS | |
1da177e4 | 451 | help |
cad82448 | 452 | This enables the use of the TMU as the system timer. |
1da177e4 | 453 | |
9d4436a6 | 454 | config SH_CMT |
f5ad881b | 455 | bool "CMT timer support" |
508eb2ce | 456 | depends on SYS_SUPPORTS_CMT && CPU_SH2 |
f5ad881b | 457 | default y |
9d4436a6 YS |
458 | help |
459 | This enables the use of the CMT as the system timer. | |
460 | ||
f5ad881b PM |
461 | # |
462 | # Support for the new-style CMT driver. This will replace SH_CMT | |
463 | # once its other dependencies are merged. | |
464 | # | |
465 | config SH_TIMER_CMT | |
466 | bool "CMT clockevents driver" | |
467 | depends on SYS_SUPPORTS_CMT && !SH_CMT | |
f5ad881b PM |
468 | select GENERIC_CLOCKEVENTS |
469 | ||
9d4436a6 | 470 | config SH_MTU2 |
f5ad881b | 471 | bool "MTU2 timer support" |
9d4436a6 | 472 | depends on CPU_SH2A |
f5ad881b | 473 | default y |
9d4436a6 YS |
474 | help |
475 | This enables the use of the MTU2 as the system timer. | |
476 | ||
417528a2 PM |
477 | config SH_TIMER_IRQ |
478 | int | |
7d740a06 YS |
479 | default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \ |
480 | CPU_SUBTYPE_SH7763 | |
417528a2 PM |
481 | default "86" if CPU_SUBTYPE_SH7619 |
482 | default "140" if CPU_SUBTYPE_SH7206 | |
d63f3a58 PM |
483 | default "142" if CPU_SUBTYPE_SH7203 && SH_CMT |
484 | default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2 | |
2ad69908 | 485 | default "238" if CPU_SUBTYPE_MXG |
417528a2 PM |
486 | default "16" |
487 | ||
cad82448 PM |
488 | config SH_PCLK_FREQ |
489 | int "Peripheral clock frequency (in Hz)" | |
870e8a24 | 490 | default "27000000" if CPU_SUBTYPE_SH7343 |
9d4436a6 | 491 | default "31250000" if CPU_SUBTYPE_SH7619 |
05627486 | 492 | default "32000000" if CPU_SUBTYPE_SH7722 |
178dd0cd | 493 | default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \ |
9d4436a6 | 494 | CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \ |
a8f67f4b | 495 | CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \ |
a4b1fddc PM |
496 | CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \ |
497 | CPU_SUBTYPE_SH7786 | |
05627486 | 498 | default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R |
cad82448 | 499 | default "66000000" if CPU_SUBTYPE_SH4_202 |
05627486 | 500 | default "50000000" |
1da177e4 | 501 | help |
cad82448 PM |
502 | This option is used to specify the peripheral clock frequency. |
503 | This is necessary for determining the reference clock value on | |
504 | platforms lacking an RTC. | |
1da177e4 | 505 | |
9d4436a6 YS |
506 | config SH_CLK_MD |
507 | int "CPU Mode Pin Setting" | |
6d01f510 | 508 | depends on CPU_SH2 |
357d5946 PM |
509 | default 6 if CPU_SUBTYPE_SH7206 |
510 | default 5 if CPU_SUBTYPE_SH7619 | |
511 | default 0 | |
9d4436a6 | 512 | help |
11cbb70e | 513 | MD2 - MD0 pin setting. |
9d4436a6 | 514 | |
57be2b48 PM |
515 | source "kernel/time/Kconfig" |
516 | ||
32351a28 PM |
517 | endmenu |
518 | ||
cad82448 PM |
519 | menu "CPU Frequency scaling" |
520 | ||
521 | source "drivers/cpufreq/Kconfig" | |
1da177e4 | 522 | |
cad82448 PM |
523 | config SH_CPU_FREQ |
524 | tristate "SuperH CPU Frequency driver" | |
cb5ec75b | 525 | depends on CPU_FREQ |
cad82448 | 526 | select CPU_FREQ_TABLE |
1da177e4 | 527 | help |
8a655053 PM |
528 | This adds the cpufreq driver for SuperH. Any CPU that supports |
529 | clock rate rounding through the clock framework can use this | |
530 | driver. While it will make the kernel slightly larger, this is | |
531 | harmless for CPUs that don't support rate rounding. The driver | |
532 | will also generate a notice in the boot log before disabling | |
533 | itself if the CPU in question is not capable of rate rounding. | |
1da177e4 | 534 | |
cad82448 | 535 | For details, take a look at <file:Documentation/cpu-freq>. |
1da177e4 LT |
536 | |
537 | If unsure, say N. | |
538 | ||
cad82448 PM |
539 | endmenu |
540 | ||
9f5e8eee PM |
541 | source "arch/sh/drivers/Kconfig" |
542 | ||
cad82448 | 543 | endmenu |
1da177e4 | 544 | |
cad82448 PM |
545 | menu "Kernel features" |
546 | ||
91b91d01 PM |
547 | source kernel/Kconfig.hz |
548 | ||
cad82448 PM |
549 | config KEXEC |
550 | bool "kexec system call (EXPERIMENTAL)" | |
f36b59d1 | 551 | depends on SUPERH32 && EXPERIMENTAL && MMU |
1da177e4 | 552 | help |
cad82448 PM |
553 | kexec is a system call that implements the ability to shutdown your |
554 | current kernel, and to start another kernel. It is like a reboot | |
1f1332f7 | 555 | but it is independent of the system firmware. And like a reboot |
cad82448 PM |
556 | you can start any kernel with it, not just Linux. |
557 | ||
1f1332f7 | 558 | The name comes from the similarity to the exec system call. |
cad82448 PM |
559 | |
560 | It is an ongoing process to be certain the hardware in a machine | |
561 | is properly shutdown, so do not be surprised if this code does not | |
562 | initially work for you. It may help to enable device hotplugging | |
563 | support. As of this writing the exact hardware interface is | |
564 | strongly in flux, so no good recommendation can be made. | |
565 | ||
4d5ade5b PM |
566 | config CRASH_DUMP |
567 | bool "kernel crash dumps (EXPERIMENTAL)" | |
640f7487 | 568 | depends on SUPERH32 && EXPERIMENTAL |
4d5ade5b PM |
569 | help |
570 | Generate crash dump after being started by kexec. | |
571 | This should be normally only set in special crash dump kernels | |
572 | which are loaded in the main kernel with kexec-tools into | |
573 | a specially reserved region and then later executed after | |
574 | a crash by kdump/kexec. The crash dump kernel must be compiled | |
575 | to a memory address not used by the main kernel using | |
576 | MEMORY_START. | |
577 | ||
578 | For more details see Documentation/kdump/kdump.txt | |
579 | ||
b7cf6ddc MD |
580 | config KEXEC_JUMP |
581 | bool "kexec jump (EXPERIMENTAL)" | |
582 | depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL | |
583 | help | |
584 | Jump between original kernel and kexeced kernel and invoke | |
585 | code via KEXEC | |
586 | ||
c4637d47 PM |
587 | config SECCOMP |
588 | bool "Enable seccomp to safely compute untrusted bytecode" | |
589 | depends on PROC_FS | |
c4637d47 PM |
590 | help |
591 | This kernel feature is useful for number crunching applications | |
592 | that may need to compute untrusted bytecode during their | |
593 | execution. By using pipes or other transports made available to | |
594 | the process as file descriptors supporting the read/write | |
595 | syscalls, it's possible to isolate those applications in | |
596 | their own address space using seccomp. Once seccomp is | |
597 | enabled via prctl, it cannot be disabled and the task is only | |
598 | allowed to execute a few safe syscalls defined by each seccomp | |
599 | mode. | |
600 | ||
601 | If unsure, say N. | |
602 | ||
1da177e4 LT |
603 | config SMP |
604 | bool "Symmetric multi-processing support" | |
357d5946 | 605 | depends on SYS_SUPPORTS_SMP |
490f5de5 | 606 | select USE_GENERIC_SMP_HELPERS |
1da177e4 LT |
607 | ---help--- |
608 | This enables support for systems with more than one CPU. If you have | |
609 | a system with only one CPU, like most personal computers, say N. If | |
610 | you have a system with more than one CPU, say Y. | |
611 | ||
612 | If you say N here, the kernel will run on single and multiprocessor | |
613 | machines, but will use only one CPU of a multiprocessor machine. If | |
614 | you say Y here, the kernel will run on many, but not all, | |
615 | singleprocessor machines. On a singleprocessor machine, the kernel | |
616 | will run faster if you say N here. | |
617 | ||
618 | People using multiprocessor machines who say Y here should also say | |
619 | Y to "Enhanced Real Time Clock Support", below. | |
620 | ||
03502faa AB |
621 | See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO |
622 | available at <http://www.tldp.org/docs.html#howto>. | |
1da177e4 LT |
623 | |
624 | If you don't know what to do here, say N. | |
625 | ||
626 | config NR_CPUS | |
627 | int "Maximum number of CPUs (2-32)" | |
628 | range 2 32 | |
629 | depends on SMP | |
2b1bd1ac | 630 | default "4" if CPU_SHX3 |
1da177e4 LT |
631 | default "2" |
632 | help | |
633 | This allows you to specify the maximum number of CPUs which this | |
634 | kernel will support. The maximum supported value is 32 and the | |
635 | minimum value which makes sense is 2. | |
636 | ||
637 | This is purely to save memory - each supported CPU adds | |
638 | approximately eight kilobytes to the kernel image. | |
639 | ||
91b91d01 PM |
640 | source "kernel/Kconfig.preempt" |
641 | ||
83662461 PM |
642 | config GUSA |
643 | def_bool y | |
1efe4ce3 | 644 | depends on !SMP && SUPERH32 |
83662461 PM |
645 | help |
646 | This enables support for gUSA (general UserSpace Atomicity). | |
647 | This is the default implementation for both UP and non-ll/sc | |
648 | CPUs, and is used by the libc, amongst others. | |
649 | ||
650 | For additional information, design information can be found | |
651 | in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>. | |
652 | ||
653 | This should only be disabled for special cases where alternate | |
654 | atomicity implementations exist. | |
655 | ||
1efe4ce3 SM |
656 | config GUSA_RB |
657 | bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)" | |
658 | depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A) | |
659 | help | |
660 | Enabling this option will allow the kernel to implement some | |
692105b8 | 661 | atomic operations using a software implementation of load-locked/ |
1efe4ce3 SM |
662 | store-conditional (LLSC). On machines which do not have hardware |
663 | LLSC, this should be more efficient than the other alternative of | |
692105b8 | 664 | disabling interrupts around the atomic sequence. |
1efe4ce3 | 665 | |
cad82448 | 666 | endmenu |
1da177e4 | 667 | |
cad82448 | 668 | menu "Boot options" |
1da177e4 | 669 | |
cad82448 PM |
670 | config ZERO_PAGE_OFFSET |
671 | hex "Zero page offset" | |
f5f826c6 | 672 | default "0x00004000" if SH_SH03 |
7a847f81 PM |
673 | default "0x00010000" if PAGE_SIZE_64KB |
674 | default "0x00002000" if PAGE_SIZE_8KB | |
cad82448 | 675 | default "0x00001000" |
1da177e4 | 676 | help |
cad82448 | 677 | This sets the default offset of zero page. |
1da177e4 | 678 | |
cad82448 PM |
679 | config BOOT_LINK_OFFSET |
680 | hex "Link address offset for booting" | |
681 | default "0x00800000" | |
682 | help | |
683 | This option allows you to set the link address offset of the zImage. | |
684 | This can be useful if you are on a board which has a small amount of | |
685 | memory. | |
1da177e4 | 686 | |
cad82448 PM |
687 | config UBC_WAKEUP |
688 | bool "Wakeup UBC on startup" | |
0e3a9aab | 689 | depends on CPU_SH4 && !CPU_SH4A |
cad82448 PM |
690 | help |
691 | Selecting this option will wakeup the User Break Controller (UBC) on | |
692 | startup. Although the UBC is left in an awake state when the processor | |
693 | comes up, some boot loaders misbehave by putting the UBC to sleep in a | |
694 | power saving state, which causes issues with things like ptrace(). | |
1da177e4 | 695 | |
cad82448 | 696 | If unsure, say N. |
1da177e4 | 697 | |
cad82448 PM |
698 | config CMDLINE_BOOL |
699 | bool "Default bootloader kernel arguments" | |
1da177e4 | 700 | |
cad82448 PM |
701 | config CMDLINE |
702 | string "Initial kernel command string" | |
703 | depends on CMDLINE_BOOL | |
704 | default "console=ttySC1,115200" | |
1da177e4 LT |
705 | |
706 | endmenu | |
707 | ||
cad82448 | 708 | menu "Bus options" |
1da177e4 | 709 | |
cad82448 PM |
710 | config SUPERHYWAY |
711 | tristate "SuperHyway Bus support" | |
712 | depends on CPU_SUBTYPE_SH4_202 | |
1da177e4 | 713 | |
17be2d2b | 714 | config MAPLE |
e16038ab PM |
715 | bool "Maple Bus support" |
716 | depends on SH_DREAMCAST | |
717 | help | |
718 | The Maple Bus is SEGA's serial communication bus for peripherals | |
719 | on the Dreamcast. Without this bus support you won't be able to | |
720 | get your Dreamcast keyboard etc to work, so most users | |
721 | probably want to say 'Y' here, unless you are only using the | |
722 | Dreamcast with a serial line terminal or a remote network | |
723 | connection. | |
17be2d2b | 724 | |
1da177e4 LT |
725 | source "arch/sh/drivers/pci/Kconfig" |
726 | ||
e16038ab PM |
727 | source "drivers/pci/pcie/Kconfig" |
728 | ||
1da177e4 LT |
729 | source "drivers/pci/Kconfig" |
730 | ||
731 | source "drivers/pcmcia/Kconfig" | |
732 | ||
733 | source "drivers/pci/hotplug/Kconfig" | |
734 | ||
735 | endmenu | |
736 | ||
737 | menu "Executable file formats" | |
738 | ||
739 | source "fs/Kconfig.binfmt" | |
740 | ||
741 | endmenu | |
742 | ||
3aa770e7 | 743 | menu "Power management options (EXPERIMENTAL)" |
af998a9a | 744 | depends on EXPERIMENTAL |
f4cb5700 | 745 | |
c6f17cb2 MD |
746 | source "kernel/power/Kconfig" |
747 | ||
748 | source "drivers/cpuidle/Kconfig" | |
3aa770e7 | 749 | |
3aa770e7 AS |
750 | endmenu |
751 | ||
d5950b43 SR |
752 | source "net/Kconfig" |
753 | ||
1da177e4 LT |
754 | source "drivers/Kconfig" |
755 | ||
756 | source "fs/Kconfig" | |
757 | ||
1da177e4 LT |
758 | source "arch/sh/Kconfig.debug" |
759 | ||
760 | source "security/Kconfig" | |
761 | ||
762 | source "crypto/Kconfig" | |
763 | ||
764 | source "lib/Kconfig" |