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