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