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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
6mainmenu "Linux/SuperH Kernel Configuration"
7
8config SUPERH
ea0e1a9a 9 def_bool y
7a440c95 10 select EMBEDDED
9483a578 11 select HAVE_CLK
86e4dd5a 12 select HAVE_IDE if HAS_IOPORT
95f72d1e 13 select HAVE_MEMBLOCK
42d4b839 14 select HAVE_OPROFILE
9de90ac2 15 select HAVE_GENERIC_DMA_COHERENT
d7b01f78 16 select HAVE_ARCH_TRACEHOOK
f802d969 17 select HAVE_DMA_API_DEBUG
73c926be 18 select HAVE_DMA_ATTRS
e360adbe 19 select HAVE_IRQ_WORK
cdd6c482 20 select HAVE_PERF_EVENTS
72f0c137 21 select PERF_USE_VMALLOC
df8ce259 22 select HAVE_KERNEL_GZIP
07e88e1b
PM
23 select HAVE_KERNEL_BZIP2
24 select HAVE_KERNEL_LZMA
c7b16efb 25 select HAVE_KERNEL_LZO
a74f7e04 26 select HAVE_SYSCALL_TRACEPOINTS
6eac1af0 27 select RTC_LIB
f01789c6 28 select GENERIC_ATOMIC64
1da177e4
LT
29 help
30 The SuperH is a RISC processor targeted for use in embedded systems
31 and consumer electronics; it was also used in the Sega Dreamcast
32 gaming console. The SuperH port has a home page at
33 <http://www.linux-sh.org/>.
34
39d28a2d 35config SUPERH32
3cc000b5 36 def_bool ARCH = "sh"
d39f5450
CS
37 select HAVE_KPROBES
38 select HAVE_KRETPROBES
6d63e73d 39 select HAVE_IOREMAP_PROT if MMU && !X2TLB
694f94f2 40 select HAVE_FUNCTION_TRACER
fad57feb
MF
41 select HAVE_FTRACE_MCOUNT_RECORD
42 select HAVE_DYNAMIC_FTRACE
c1340c05 43 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
e4b053d9 44 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
327933f5 45 select HAVE_FUNCTION_GRAPH_TRACER
ab6e570b 46 select HAVE_ARCH_KGDB
6fbfe8d7 47 select HAVE_HW_BREAKPOINT
0102752e 48 select HAVE_MIXED_BREAKPOINTS_REGS
6c0ee6a4 49 select PERF_EVENTS if HAVE_HW_BREAKPOINT
8dafc346 50 select ARCH_HIBERNATION_POSSIBLE if MMU
ea0e1a9a
PM
51
52config SUPERH64
3cc000b5 53 def_bool ARCH = "sh64"
39d28a2d 54
f42b7e3d
PM
55config ARCH_DEFCONFIG
56 string
57 default "arch/sh/configs/shx3_defconfig" if SUPERH32
58 default "arch/sh/configs/cayman_defconfig" if SUPERH64
59
1da177e4 60config RWSEM_GENERIC_SPINLOCK
d7ef4fb3 61 def_bool y
1da177e4
LT
62
63config RWSEM_XCHGADD_ALGORITHM
64 bool
65
fa691511
PM
66config GENERIC_BUG
67 def_bool y
a82d53ec 68 depends on BUG && SUPERH32
fa691511 69
3767f3f1
PM
70config GENERIC_CSUM
71 def_bool y
72 depends on SUPERH64
73
e2268c71 74config GENERIC_FIND_NEXT_BIT
d7ef4fb3 75 def_bool y
e2268c71
AM
76
77config GENERIC_HWEIGHT
d7ef4fb3 78 def_bool y
e2268c71 79
1da177e4 80config GENERIC_HARDIRQS
d7ef4fb3 81 def_bool y
1da177e4 82
5093c9a4
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83config GENERIC_HARDIRQS_NO__DO_IRQ
84 def_bool y
85
2eb2a436
PM
86config IRQ_PER_CPU
87 def_bool y
88
4b842c85
PM
89config SPARSE_IRQ
90 def_bool y
91 depends on SUPERH32
92
2967dab1
MD
93config GENERIC_GPIO
94 def_bool n
95
1da177e4 96config GENERIC_CALIBRATE_DELAY
cf204fa7 97 bool
1da177e4 98
cad82448
PM
99config GENERIC_IOMAP
100 bool
101
57be2b48 102config GENERIC_CLOCKEVENTS
938edae1 103 def_bool y
57be2b48 104
8c24594d
PM
105config GENERIC_CLOCKEVENTS_BROADCAST
106 bool
107
6d134b9e
PM
108config GENERIC_CMOS_UPDATE
109 def_bool y
110 depends on SH_SH03 || SH_DREAMCAST
111
bdcab87b
PM
112config GENERIC_LOCKBREAK
113 def_bool y
114 depends on SMP && PREEMPT
115
357d5946
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116config SYS_SUPPORTS_PM
117 bool
af998a9a
MD
118 depends on !SMP
119
120config ARCH_SUSPEND_POSSIBLE
121 def_bool n
122
123config ARCH_HIBERNATION_POSSIBLE
124 def_bool n
357d5946 125
0a9b0db1
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126config SYS_SUPPORTS_APM_EMULATION
127 bool
af998a9a 128 select ARCH_SUSPEND_POSSIBLE
357d5946 129
ffb4a73d
PM
130config SYS_SUPPORTS_HUGETLBFS
131 bool
132
357d5946
PM
133config SYS_SUPPORTS_SMP
134 bool
135
136config SYS_SUPPORTS_NUMA
137 bool
138
139config SYS_SUPPORTS_PCI
140 bool
0a9b0db1 141
f5ad881b
PM
142config SYS_SUPPORTS_CMT
143 bool
144
d5ed4c2e
MD
145config SYS_SUPPORTS_MTU2
146 bool
147
9570ef20
MD
148config SYS_SUPPORTS_TMU
149 bool
150
afbfb52e 151config STACKTRACE_SUPPORT
d7ef4fb3 152 def_bool y
afbfb52e
PM
153
154config LOCKDEP_SUPPORT
d7ef4fb3 155 def_bool y
afbfb52e 156
5a89f1ad
PM
157config HAVE_LATENCYTOP_SUPPORT
158 def_bool y
5a89f1ad 159
f0d1b0b3 160config ARCH_HAS_ILOG2_U32
d7ef4fb3 161 def_bool n
f0d1b0b3
DH
162
163config ARCH_HAS_ILOG2_U64
d7ef4fb3 164 def_bool n
f0d1b0b3 165
e257ad06
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166config ARCH_NO_VIRT_TO_BUS
167 def_bool y
168
e869a90e
PM
169config ARCH_HAS_DEFAULT_IDLE
170 def_bool y
171
2e046b94
PM
172config ARCH_HAS_CPU_IDLE_WAIT
173 def_bool y
174
86e4dd5a
PM
175config NO_IOPORT
176 bool
177
e7cc9a73
MD
178config IO_TRAPPED
179 bool
180
01be5d63
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181config DMA_COHERENT
182 bool
183
184config DMA_NONCOHERENT
185 def_bool !DMA_COHERENT
186
5cabbb62
FT
187config NEED_DMA_MAP_STATE
188 def_bool DMA_NONCOHERENT
189
18e98307
FT
190config NEED_SG_DMA_LENGTH
191 def_bool y
192
1da177e4
LT
193source "init/Kconfig"
194
dc52ddc0
MH
195source "kernel/Kconfig.freezer"
196
1da177e4
LT
197menu "System type"
198
b5f42db0
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199#
200# Processor families
201#
202config CPU_SH2
203 bool
204
205config CPU_SH2A
206 bool
207 select CPU_SH2
208
209config CPU_SH3
210 bool
211 select CPU_HAS_INTEVT
212 select CPU_HAS_SR_RB
4fa48e17 213 select SYS_SUPPORTS_TMU
b5f42db0
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214
215config CPU_SH4
216 bool
217 select CPU_HAS_INTEVT
218 select CPU_HAS_SR_RB
b5f42db0 219 select CPU_HAS_FPU if !CPU_SH4AL_DSP
4fa48e17 220 select SYS_SUPPORTS_TMU
ffb4a73d 221 select SYS_SUPPORTS_HUGETLBFS if MMU
b5f42db0
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222
223config CPU_SH4A
224 bool
225 select CPU_SH4
226
227config CPU_SH4AL_DSP
228 bool
229 select CPU_SH4A
230 select CPU_HAS_DSP
231
ea0e1a9a
PM
232config CPU_SH5
233 bool
234 select CPU_HAS_FPU
add47067 235 select SYS_SUPPORTS_TMU
ffb4a73d 236 select SYS_SUPPORTS_HUGETLBFS if MMU
ea0e1a9a 237
b5f42db0
PM
238config CPU_SHX2
239 bool
240
241config CPU_SHX3
242 bool
01be5d63 243 select DMA_COHERENT
4b478ee2
PM
244 select SYS_SUPPORTS_SMP
245 select SYS_SUPPORTS_NUMA
b5f42db0 246
dc65a977
PM
247config ARCH_SHMOBILE
248 bool
77594912 249 select ARCH_SUSPEND_POSSIBLE
ac2c596b
MD
250 select PM
251 select PM_RUNTIME
dc65a977 252
86c8c047
MF
253config CPU_HAS_PMU
254 depends on CPU_SH4 || CPU_SH4A
255 default y
256 bool
257
3cc000b5
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258if SUPERH32
259
b5f42db0
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260choice
261 prompt "Processor sub-type selection"
262
263#
264# Processor subtypes
265#
266
267# SH-2 Processor Support
268
269config CPU_SUBTYPE_SH7619
270 bool "Support SH7619 processor"
271 select CPU_SH2
f5ad881b 272 select SYS_SUPPORTS_CMT
b5f42db0
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273
274# SH-2A Processor Support
275
2825999e
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276config CPU_SUBTYPE_SH7201
277 bool "Support SH7201 processor"
278 select CPU_SH2A
279 select CPU_HAS_FPU
da107c6e 280 select SYS_SUPPORTS_MTU2
2825999e 281
6d01f510
PM
282config CPU_SUBTYPE_SH7203
283 bool "Support SH7203 processor"
284 select CPU_SH2A
74d99a5e 285 select CPU_HAS_FPU
f5ad881b 286 select SYS_SUPPORTS_CMT
da107c6e 287 select SYS_SUPPORTS_MTU2
6d01f510 288
b5f42db0
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289config CPU_SUBTYPE_SH7206
290 bool "Support SH7206 processor"
291 select CPU_SH2A
f5ad881b 292 select SYS_SUPPORTS_CMT
da107c6e 293 select SYS_SUPPORTS_MTU2
b5f42db0 294
a8f67f4b
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295config CPU_SUBTYPE_SH7263
296 bool "Support SH7263 processor"
297 select CPU_SH2A
74d99a5e 298 select CPU_HAS_FPU
f5ad881b 299 select SYS_SUPPORTS_CMT
da107c6e 300 select SYS_SUPPORTS_MTU2
a8f67f4b 301
2ad69908
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302config CPU_SUBTYPE_MXG
303 bool "Support MX-G processor"
304 select CPU_SH2A
da107c6e 305 select SYS_SUPPORTS_MTU2
2ad69908
PM
306 help
307 Select MX-G if running on an R8A03022BG part.
308
b5f42db0
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309# SH-3 Processor Support
310
311config CPU_SUBTYPE_SH7705
312 bool "Support SH7705 processor"
313 select CPU_SH3
314
315config CPU_SUBTYPE_SH7706
316 bool "Support SH7706 processor"
317 select CPU_SH3
318 help
319 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
320
321config CPU_SUBTYPE_SH7707
322 bool "Support SH7707 processor"
323 select CPU_SH3
324 help
325 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
326
327config CPU_SUBTYPE_SH7708
328 bool "Support SH7708 processor"
329 select CPU_SH3
330 help
331 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
332 if you have a 100 Mhz SH-3 HD6417708R CPU.
333
334config CPU_SUBTYPE_SH7709
335 bool "Support SH7709 processor"
336 select CPU_SH3
337 help
338 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
339
340config CPU_SUBTYPE_SH7710
341 bool "Support SH7710 processor"
342 select CPU_SH3
343 select CPU_HAS_DSP
344 help
345 Select SH7710 if you have a SH3-DSP SH7710 CPU.
346
347config CPU_SUBTYPE_SH7712
348 bool "Support SH7712 processor"
349 select CPU_SH3
350 select CPU_HAS_DSP
351 help
352 Select SH7712 if you have a SH3-DSP SH7712 CPU.
353
354config CPU_SUBTYPE_SH7720
355 bool "Support SH7720 processor"
356 select CPU_SH3
357 select CPU_HAS_DSP
2b23a882 358 select SYS_SUPPORTS_CMT
b5f42db0
PM
359 help
360 Select SH7720 if you have a SH3-DSP SH7720 CPU.
361
31a49c4b
YS
362config CPU_SUBTYPE_SH7721
363 bool "Support SH7721 processor"
364 select CPU_SH3
365 select CPU_HAS_DSP
2b23a882 366 select SYS_SUPPORTS_CMT
31a49c4b
YS
367 help
368 Select SH7721 if you have a SH3-DSP SH7721 CPU.
369
b5f42db0
PM
370# SH-4 Processor Support
371
372config CPU_SUBTYPE_SH7750
373 bool "Support SH7750 processor"
374 select CPU_SH4
375 help
376 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
377
378config CPU_SUBTYPE_SH7091
379 bool "Support SH7091 processor"
380 select CPU_SH4
381 help
382 Select SH7091 if you have an SH-4 based Sega device (such as
383 the Dreamcast, Naomi, and Naomi 2).
384
385config CPU_SUBTYPE_SH7750R
386 bool "Support SH7750R processor"
387 select CPU_SH4
388
389config CPU_SUBTYPE_SH7750S
390 bool "Support SH7750S processor"
391 select CPU_SH4
392
393config CPU_SUBTYPE_SH7751
394 bool "Support SH7751 processor"
395 select CPU_SH4
396 help
397 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
398 or if you have a HD6417751R CPU.
399
400config CPU_SUBTYPE_SH7751R
401 bool "Support SH7751R processor"
402 select CPU_SH4
403
404config CPU_SUBTYPE_SH7760
405 bool "Support SH7760 processor"
406 select CPU_SH4
407
408config CPU_SUBTYPE_SH4_202
409 bool "Support SH4-202 processor"
410 select CPU_SH4
411
412# SH-4A Processor Support
413
178dd0cd
PM
414config CPU_SUBTYPE_SH7723
415 bool "Support SH7723 processor"
416 select CPU_SH4A
417 select CPU_SHX2
dc65a977 418 select ARCH_SHMOBILE
178dd0cd 419 select ARCH_SPARSEMEM_ENABLE
f5ad881b 420 select SYS_SUPPORTS_CMT
178dd0cd
PM
421 help
422 Select SH7723 if you have an SH-MobileR2 CPU.
423
0207a2ef
KM
424config CPU_SUBTYPE_SH7724
425 bool "Support SH7724 processor"
426 select CPU_SH4A
427 select CPU_SHX2
59fe700d 428 select ARCH_SHMOBILE
0207a2ef
KM
429 select ARCH_SPARSEMEM_ENABLE
430 select SYS_SUPPORTS_CMT
431 help
432 Select SH7724 if you have an SH-MobileR2R CPU.
433
c01f0f1a
YS
434config CPU_SUBTYPE_SH7757
435 bool "Support SH7757 processor"
436 select CPU_SH4A
437 select CPU_SHX2
438 help
439 Select SH7757 if you have a SH4A SH7757 CPU.
440
7d740a06
YS
441config CPU_SUBTYPE_SH7763
442 bool "Support SH7763 processor"
443 select CPU_SH4A
444 help
445 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
446
b5f42db0
PM
447config CPU_SUBTYPE_SH7770
448 bool "Support SH7770 processor"
449 select CPU_SH4A
450
451config CPU_SUBTYPE_SH7780
452 bool "Support SH7780 processor"
453 select CPU_SH4A
454
455config CPU_SUBTYPE_SH7785
456 bool "Support SH7785 processor"
457 select CPU_SH4A
458 select CPU_SHX2
55ba99eb
KM
459 select ARCH_SPARSEMEM_ENABLE
460 select SYS_SUPPORTS_NUMA
461
462config CPU_SUBTYPE_SH7786
463 bool "Support SH7786 processor"
464 select CPU_SH4A
37042fbd 465 select CPU_SHX3
8263a67e 466 select CPU_HAS_PTEAEX
2eb2a436 467 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
b5f42db0
PM
468
469config CPU_SUBTYPE_SHX3
470 bool "Support SH-X3 processor"
471 select CPU_SH4A
472 select CPU_SHX3
5840263e 473 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
b5f42db0
PM
474
475# SH4AL-DSP Processor Support
476
477config CPU_SUBTYPE_SH7343
478 bool "Support SH7343 processor"
479 select CPU_SH4AL_DSP
dc65a977 480 select ARCH_SHMOBILE
f5ad881b 481 select SYS_SUPPORTS_CMT
b5f42db0
PM
482
483config CPU_SUBTYPE_SH7722
484 bool "Support SH7722 processor"
485 select CPU_SH4AL_DSP
486 select CPU_SHX2
dc65a977 487 select ARCH_SHMOBILE
b5f42db0
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488 select ARCH_SPARSEMEM_ENABLE
489 select SYS_SUPPORTS_NUMA
f5ad881b 490 select SYS_SUPPORTS_CMT
9109a30e
MD
491
492config CPU_SUBTYPE_SH7366
493 bool "Support SH7366 processor"
494 select CPU_SH4AL_DSP
495 select CPU_SHX2
dc65a977 496 select ARCH_SHMOBILE
9109a30e
MD
497 select ARCH_SPARSEMEM_ENABLE
498 select SYS_SUPPORTS_NUMA
f5ad881b 499 select SYS_SUPPORTS_CMT
b5f42db0 500
3cc000b5
PM
501endchoice
502
503endif
504
505if SUPERH64
506
507choice
508 prompt "Processor sub-type selection"
509
ea0e1a9a
PM
510# SH-5 Processor Support
511
512config CPU_SUBTYPE_SH5_101
513 bool "Support SH5-101 processor"
514 select CPU_SH5
515
516config CPU_SUBTYPE_SH5_103
517 bool "Support SH5-103 processor"
8ef97dd7 518 select CPU_SH5
ea0e1a9a 519
b5f42db0
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520endchoice
521
3cc000b5
PM
522endif
523
f3d22298 524source "arch/sh/mm/Kconfig"
939a24a6 525
4690bdc7 526source "arch/sh/Kconfig.cpu"
f3d22298 527
939a24a6 528source "arch/sh/boards/Kconfig"
32351a28 529
32351a28
PM
530menu "Timer and clock configuration"
531
9570ef20
MD
532config SH_TIMER_TMU
533 bool "TMU timer driver"
f19900b2 534 depends on SYS_SUPPORTS_TMU
9570ef20 535 default y
9570ef20
MD
536 help
537 This enables the build of the TMU timer driver.
538
f5ad881b 539config SH_TIMER_CMT
f425752f
MD
540 bool "CMT timer driver"
541 depends on SYS_SUPPORTS_CMT
542 default y
f425752f
MD
543 help
544 This enables build of the CMT timer driver.
f5ad881b 545
d5ed4c2e
MD
546config SH_TIMER_MTU2
547 bool "MTU2 timer driver"
3280c886 548 depends on SYS_SUPPORTS_MTU2
d5ed4c2e 549 default y
d5ed4c2e
MD
550 help
551 This enables build of the MTU2 timer driver.
552
cad82448
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553config SH_PCLK_FREQ
554 int "Peripheral clock frequency (in Hz)"
8152a74b 555 depends on SH_CLK_CPG_LEGACY
9d4436a6 556 default "31250000" if CPU_SUBTYPE_SH7619
8152a74b
PM
557 default "33333333" if CPU_SUBTYPE_SH7770 || \
558 CPU_SUBTYPE_SH7760 || \
559 CPU_SUBTYPE_SH7705 || \
560 CPU_SUBTYPE_SH7203 || \
561 CPU_SUBTYPE_SH7206 || \
562 CPU_SUBTYPE_SH7263 || \
43a1839c 563 CPU_SUBTYPE_MXG
05627486 564 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
cad82448 565 default "66000000" if CPU_SUBTYPE_SH4_202
05627486 566 default "50000000"
1da177e4 567 help
cad82448
PM
568 This option is used to specify the peripheral clock frequency.
569 This is necessary for determining the reference clock value on
570 platforms lacking an RTC.
1da177e4 571
36aa1e32
PM
572config SH_CLK_CPG
573 def_bool y
574
253b0887 575config SH_CLK_CPG_LEGACY
36aa1e32 576 depends on SH_CLK_CPG
43a1839c
PM
577 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
578 !CPU_SUBTYPE_SH7786
253b0887 579
9d4436a6
YS
580config SH_CLK_MD
581 int "CPU Mode Pin Setting"
6d01f510 582 depends on CPU_SH2
357d5946
PM
583 default 6 if CPU_SUBTYPE_SH7206
584 default 5 if CPU_SUBTYPE_SH7619
585 default 0
9d4436a6 586 help
11cbb70e 587 MD2 - MD0 pin setting.
9d4436a6 588
57be2b48
PM
589source "kernel/time/Kconfig"
590
32351a28
PM
591endmenu
592
cad82448
PM
593menu "CPU Frequency scaling"
594
595source "drivers/cpufreq/Kconfig"
1da177e4 596
cad82448
PM
597config SH_CPU_FREQ
598 tristate "SuperH CPU Frequency driver"
cb5ec75b 599 depends on CPU_FREQ
cad82448 600 select CPU_FREQ_TABLE
1da177e4 601 help
8a655053
PM
602 This adds the cpufreq driver for SuperH. Any CPU that supports
603 clock rate rounding through the clock framework can use this
604 driver. While it will make the kernel slightly larger, this is
605 harmless for CPUs that don't support rate rounding. The driver
606 will also generate a notice in the boot log before disabling
607 itself if the CPU in question is not capable of rate rounding.
1da177e4 608
cad82448 609 For details, take a look at <file:Documentation/cpu-freq>.
1da177e4
LT
610
611 If unsure, say N.
612
cad82448
PM
613endmenu
614
9f5e8eee
PM
615source "arch/sh/drivers/Kconfig"
616
cad82448 617endmenu
1da177e4 618
cad82448
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619menu "Kernel features"
620
91b91d01
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621source kernel/Kconfig.hz
622
cad82448
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623config KEXEC
624 bool "kexec system call (EXPERIMENTAL)"
f36b59d1 625 depends on SUPERH32 && EXPERIMENTAL && MMU
1da177e4 626 help
cad82448
PM
627 kexec is a system call that implements the ability to shutdown your
628 current kernel, and to start another kernel. It is like a reboot
1f1332f7 629 but it is independent of the system firmware. And like a reboot
cad82448
PM
630 you can start any kernel with it, not just Linux.
631
1f1332f7 632 The name comes from the similarity to the exec system call.
cad82448
PM
633
634 It is an ongoing process to be certain the hardware in a machine
635 is properly shutdown, so do not be surprised if this code does not
636 initially work for you. It may help to enable device hotplugging
637 support. As of this writing the exact hardware interface is
638 strongly in flux, so no good recommendation can be made.
639
4d5ade5b
PM
640config CRASH_DUMP
641 bool "kernel crash dumps (EXPERIMENTAL)"
d523e1ae 642 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
4d5ade5b
PM
643 help
644 Generate crash dump after being started by kexec.
645 This should be normally only set in special crash dump kernels
646 which are loaded in the main kernel with kexec-tools into
647 a specially reserved region and then later executed after
648 a crash by kdump/kexec. The crash dump kernel must be compiled
649 to a memory address not used by the main kernel using
650 MEMORY_START.
651
652 For more details see Documentation/kdump/kdump.txt
653
b7cf6ddc
MD
654config KEXEC_JUMP
655 bool "kexec jump (EXPERIMENTAL)"
656 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
657 help
658 Jump between original kernel and kexeced kernel and invoke
659 code via KEXEC
660
c4637d47
PM
661config SECCOMP
662 bool "Enable seccomp to safely compute untrusted bytecode"
663 depends on PROC_FS
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664 help
665 This kernel feature is useful for number crunching applications
666 that may need to compute untrusted bytecode during their
667 execution. By using pipes or other transports made available to
668 the process as file descriptors supporting the read/write
669 syscalls, it's possible to isolate those applications in
670 their own address space using seccomp. Once seccomp is
671 enabled via prctl, it cannot be disabled and the task is only
672 allowed to execute a few safe syscalls defined by each seccomp
673 mode.
674
675 If unsure, say N.
676
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677config SMP
678 bool "Symmetric multi-processing support"
357d5946 679 depends on SYS_SUPPORTS_SMP
490f5de5 680 select USE_GENERIC_SMP_HELPERS
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681 ---help---
682 This enables support for systems with more than one CPU. If you have
683 a system with only one CPU, like most personal computers, say N. If
684 you have a system with more than one CPU, say Y.
685
686 If you say N here, the kernel will run on single and multiprocessor
687 machines, but will use only one CPU of a multiprocessor machine. If
688 you say Y here, the kernel will run on many, but not all,
689 singleprocessor machines. On a singleprocessor machine, the kernel
690 will run faster if you say N here.
691
692 People using multiprocessor machines who say Y here should also say
693 Y to "Enhanced Real Time Clock Support", below.
694
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695 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
696 available at <http://www.tldp.org/docs.html#howto>.
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697
698 If you don't know what to do here, say N.
699
700config NR_CPUS
701 int "Maximum number of CPUs (2-32)"
702 range 2 32
703 depends on SMP
2eb2a436 704 default "4" if CPU_SUBTYPE_SHX3
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705 default "2"
706 help
707 This allows you to specify the maximum number of CPUs which this
708 kernel will support. The maximum supported value is 32 and the
709 minimum value which makes sense is 2.
710
711 This is purely to save memory - each supported CPU adds
712 approximately eight kilobytes to the kernel image.
713
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714config HOTPLUG_CPU
715 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
716 depends on SMP && HOTPLUG && EXPERIMENTAL
717 help
718 Say Y here to experiment with turning CPUs off and on. CPUs
719 can be controlled through /sys/devices/system/cpu.
720
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721source "kernel/Kconfig.preempt"
722
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723config GUSA
724 def_bool y
1efe4ce3 725 depends on !SMP && SUPERH32
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726 help
727 This enables support for gUSA (general UserSpace Atomicity).
728 This is the default implementation for both UP and non-ll/sc
729 CPUs, and is used by the libc, amongst others.
730
731 For additional information, design information can be found
732 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
733
734 This should only be disabled for special cases where alternate
735 atomicity implementations exist.
736
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737config GUSA_RB
738 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
739 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
740 help
741 Enabling this option will allow the kernel to implement some
692105b8 742 atomic operations using a software implementation of load-locked/
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743 store-conditional (LLSC). On machines which do not have hardware
744 LLSC, this should be more efficient than the other alternative of
692105b8 745 disabling interrupts around the atomic sequence.
1efe4ce3 746
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747config HW_PERF_EVENTS
748 bool "Enable hardware performance counter support for perf events"
749 depends on PERF_EVENTS && CPU_HAS_PMU
750 default y
751 help
752 Enable hardware performance counter support for perf events. If
753 disabled, perf events will use software events only.
754
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755source "drivers/sh/Kconfig"
756
cad82448 757endmenu
1da177e4 758
cad82448 759menu "Boot options"
1da177e4 760
cad82448 761config ZERO_PAGE_OFFSET
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762 hex
763 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
764 SH_7751_SOLUTION_ENGINE
765 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
7a847f81 766 default "0x00002000" if PAGE_SIZE_8KB
cad82448 767 default "0x00001000"
1da177e4 768 help
cad82448 769 This sets the default offset of zero page.
1da177e4 770
cad82448 771config BOOT_LINK_OFFSET
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772 hex
773 default "0x00210000" if SH_SHMIN
a2e76c80 774 default "0x00400000" if SH_CAYMAN
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775 default "0x00810000" if SH_7780_SOLUTION_ENGINE
776 default "0x009e0000" if SH_TITAN
777 default "0x01800000" if SH_SDK7780
778 default "0x02000000" if SH_EDOSK7760
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779 default "0x00800000"
780 help
781 This option allows you to set the link address offset of the zImage.
782 This can be useful if you are on a board which has a small amount of
783 memory.
1da177e4 784
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785config ENTRY_OFFSET
786 hex
787 default "0x00001000" if PAGE_SIZE_4KB
788 default "0x00002000" if PAGE_SIZE_8KB
789 default "0x00004000" if PAGE_SIZE_16KB
790 default "0x00010000" if PAGE_SIZE_64KB
791 default "0x00000000"
792
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793config ROMIMAGE_MMCIF
794 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
795 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
796 help
797 Say Y here to include experimental MMCIF loading code in
798 romImage. With this enabled it is possible to write the romImage
799 kernel image to an MMC card and boot the kernel straight from
800 the reset vector. At reset the processor Mask ROM will load the
801 first part of the romImage which in turn loads the rest the kernel
802 image to RAM using the MMCIF hardware block.
803
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804choice
805 prompt "Kernel command line"
806 optional
807 default CMDLINE_OVERWRITE
808 help
809 Setting this option allows the kernel command line arguments
810 to be set.
811
812config CMDLINE_OVERWRITE
813 bool "Overwrite bootloader kernel arguments"
814 help
815 Given string will overwrite any arguments passed in by
816 a bootloader.
817
818config CMDLINE_EXTEND
819 bool "Extend bootloader kernel arguments"
820 help
821 Given string will be concatenated with arguments passed in
822 by a bootloader.
823
824endchoice
1da177e4 825
cad82448 826config CMDLINE
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827 string "Kernel command line arguments string"
828 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
cad82448 829 default "console=ttySC1,115200"
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830
831endmenu
832
cad82448 833menu "Bus options"
1da177e4 834
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835config SUPERHYWAY
836 tristate "SuperHyway Bus support"
837 depends on CPU_SUBTYPE_SH4_202
1da177e4 838
17be2d2b 839config MAPLE
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840 bool "Maple Bus support"
841 depends on SH_DREAMCAST
842 help
843 The Maple Bus is SEGA's serial communication bus for peripherals
844 on the Dreamcast. Without this bus support you won't be able to
845 get your Dreamcast keyboard etc to work, so most users
846 probably want to say 'Y' here, unless you are only using the
847 Dreamcast with a serial line terminal or a remote network
848 connection.
17be2d2b 849
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850config PCI
851 bool "PCI support"
852 depends on SYS_SUPPORTS_PCI
320e68da 853 select PCI_DOMAINS
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854 help
855 Find out whether you have a PCI motherboard. PCI is the name of a
856 bus system, i.e. the way the CPU talks to the other stuff inside
857 your box. If you have PCI, say Y, otherwise N.
1da177e4 858
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859config PCI_DOMAINS
860 bool
861
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862source "drivers/pci/pcie/Kconfig"
863
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864source "drivers/pci/Kconfig"
865
866source "drivers/pcmcia/Kconfig"
867
868source "drivers/pci/hotplug/Kconfig"
869
870endmenu
871
872menu "Executable file formats"
873
874source "fs/Kconfig.binfmt"
875
876endmenu
877
3aa770e7 878menu "Power management options (EXPERIMENTAL)"
af998a9a 879depends on EXPERIMENTAL
f4cb5700 880
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881source "kernel/power/Kconfig"
882
883source "drivers/cpuidle/Kconfig"
3aa770e7 884
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885endmenu
886
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887source "net/Kconfig"
888
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889source "drivers/Kconfig"
890
891source "fs/Kconfig"
892
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893source "arch/sh/Kconfig.debug"
894
895source "security/Kconfig"
896
897source "crypto/Kconfig"
898
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899menuconfig VIRTUALIZATION
900 bool "Virtualization"
901 default n
902 ---help---
903 Say Y here to get to see options for using your Linux host to run other
904 operating systems inside virtual machines (guests).
905 This option alone does not add any kernel code.
906
907 If you say N, all options in this submenu will be skipped and disabled.
908
909if VIRTUALIZATION
910
911source drivers/virtio/Kconfig
912
913endif # VIRTUALIZATION
914
1da177e4 915source "lib/Kconfig"