Add Kconfig option ARCH_HAVE_NMI_SAFE_CMPXCHG
[deliverable/linux.git] / arch / sh / Kconfig
CommitLineData
1da177e4 1config SUPERH
ea0e1a9a 2 def_bool y
6a108a14 3 select EXPERT
6d803ba7 4 select CLKDEV_LOOKUP
86e4dd5a 5 select HAVE_IDE if HAS_IOPORT
95f72d1e 6 select HAVE_MEMBLOCK
42d4b839 7 select HAVE_OPROFILE
9de90ac2 8 select HAVE_GENERIC_DMA_COHERENT
d7b01f78 9 select HAVE_ARCH_TRACEHOOK
f802d969 10 select HAVE_DMA_API_DEBUG
73c926be 11 select HAVE_DMA_ATTRS
e360adbe 12 select HAVE_IRQ_WORK
cdd6c482 13 select HAVE_PERF_EVENTS
df013ffb 14 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
72f0c137 15 select PERF_USE_VMALLOC
df8ce259 16 select HAVE_KERNEL_GZIP
07e88e1b
PM
17 select HAVE_KERNEL_BZIP2
18 select HAVE_KERNEL_LZMA
50cfa79d 19 select HAVE_KERNEL_XZ
c7b16efb 20 select HAVE_KERNEL_LZO
a74f7e04 21 select HAVE_SYSCALL_TRACEPOINTS
eaaaeef3 22 select HAVE_REGS_AND_STACK_ACCESS_API
57b81330
PM
23 select HAVE_GENERIC_HARDIRQS
24 select HAVE_SPARSE_IRQ
ed170924 25 select IRQ_FORCED_THREADING
6eac1af0 26 select RTC_LIB
f01789c6 27 select GENERIC_ATOMIC64
3d44ae40 28 select GENERIC_IRQ_SHOW
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
e583d6b3 49 select PERF_EVENTS
8dafc346 50 select ARCH_HIBERNATION_POSSIBLE if MMU
57b81330 51 select SPARSE_IRQ
ea0e1a9a
PM
52
53config SUPERH64
3cc000b5 54 def_bool ARCH = "sh64"
39d28a2d 55
f42b7e3d
PM
56config ARCH_DEFCONFIG
57 string
58 default "arch/sh/configs/shx3_defconfig" if SUPERH32
59 default "arch/sh/configs/cayman_defconfig" if SUPERH64
60
1da177e4 61config RWSEM_GENERIC_SPINLOCK
d7ef4fb3 62 def_bool y
1da177e4
LT
63
64config RWSEM_XCHGADD_ALGORITHM
65 bool
66
fa691511
PM
67config GENERIC_BUG
68 def_bool y
a82d53ec 69 depends on BUG && SUPERH32
fa691511 70
3767f3f1
PM
71config GENERIC_CSUM
72 def_bool y
73 depends on SUPERH64
74
e2268c71 75config GENERIC_HWEIGHT
d7ef4fb3 76 def_bool y
e2268c71 77
2eb2a436
PM
78config IRQ_PER_CPU
79 def_bool y
80
2967dab1
MD
81config GENERIC_GPIO
82 def_bool n
83
1da177e4 84config GENERIC_CALIBRATE_DELAY
cf204fa7 85 bool
1da177e4 86
cad82448
PM
87config GENERIC_IOMAP
88 bool
89
57be2b48 90config GENERIC_CLOCKEVENTS
938edae1 91 def_bool y
57be2b48 92
8c24594d
PM
93config GENERIC_CLOCKEVENTS_BROADCAST
94 bool
95
6d134b9e
PM
96config GENERIC_CMOS_UPDATE
97 def_bool y
98 depends on SH_SH03 || SH_DREAMCAST
99
bdcab87b
PM
100config GENERIC_LOCKBREAK
101 def_bool y
102 depends on SMP && PREEMPT
103
357d5946
PM
104config SYS_SUPPORTS_PM
105 bool
af998a9a
MD
106 depends on !SMP
107
108config ARCH_SUSPEND_POSSIBLE
109 def_bool n
110
111config ARCH_HIBERNATION_POSSIBLE
112 def_bool n
357d5946 113
0a9b0db1
PM
114config SYS_SUPPORTS_APM_EMULATION
115 bool
af998a9a 116 select ARCH_SUSPEND_POSSIBLE
357d5946 117
ffb4a73d
PM
118config SYS_SUPPORTS_HUGETLBFS
119 bool
120
357d5946
PM
121config SYS_SUPPORTS_SMP
122 bool
123
124config SYS_SUPPORTS_NUMA
125 bool
126
127config SYS_SUPPORTS_PCI
128 bool
0a9b0db1 129
f5ad881b
PM
130config SYS_SUPPORTS_CMT
131 bool
132
d5ed4c2e
MD
133config SYS_SUPPORTS_MTU2
134 bool
135
9570ef20
MD
136config SYS_SUPPORTS_TMU
137 bool
138
afbfb52e 139config STACKTRACE_SUPPORT
d7ef4fb3 140 def_bool y
afbfb52e
PM
141
142config LOCKDEP_SUPPORT
d7ef4fb3 143 def_bool y
afbfb52e 144
5a89f1ad
PM
145config HAVE_LATENCYTOP_SUPPORT
146 def_bool y
5a89f1ad 147
f0d1b0b3 148config ARCH_HAS_ILOG2_U32
d7ef4fb3 149 def_bool n
f0d1b0b3
DH
150
151config ARCH_HAS_ILOG2_U64
d7ef4fb3 152 def_bool n
f0d1b0b3 153
e257ad06
PM
154config ARCH_NO_VIRT_TO_BUS
155 def_bool y
156
e869a90e
PM
157config ARCH_HAS_DEFAULT_IDLE
158 def_bool y
159
2e046b94
PM
160config ARCH_HAS_CPU_IDLE_WAIT
161 def_bool y
162
86e4dd5a 163config NO_IOPORT
37b7a978 164 def_bool !PCI
4e2b1084 165 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN
86e4dd5a 166
e7cc9a73
MD
167config IO_TRAPPED
168 bool
169
01be5d63
PM
170config DMA_COHERENT
171 bool
172
173config DMA_NONCOHERENT
174 def_bool !DMA_COHERENT
175
5cabbb62
FT
176config NEED_DMA_MAP_STATE
177 def_bool DMA_NONCOHERENT
178
18e98307
FT
179config NEED_SG_DMA_LENGTH
180 def_bool y
181
1da177e4
LT
182source "init/Kconfig"
183
dc52ddc0
MH
184source "kernel/Kconfig.freezer"
185
1da177e4
LT
186menu "System type"
187
b5f42db0
PM
188#
189# Processor families
190#
191config CPU_SH2
192 bool
193
194config CPU_SH2A
195 bool
196 select CPU_SH2
e2fcf74f 197 select UNCACHED_MAPPING
b5f42db0
PM
198
199config CPU_SH3
200 bool
201 select CPU_HAS_INTEVT
202 select CPU_HAS_SR_RB
4fa48e17 203 select SYS_SUPPORTS_TMU
b5f42db0
PM
204
205config CPU_SH4
206 bool
207 select CPU_HAS_INTEVT
208 select CPU_HAS_SR_RB
b5f42db0 209 select CPU_HAS_FPU if !CPU_SH4AL_DSP
4fa48e17 210 select SYS_SUPPORTS_TMU
ffb4a73d 211 select SYS_SUPPORTS_HUGETLBFS if MMU
b5f42db0
PM
212
213config CPU_SH4A
214 bool
215 select CPU_SH4
216
217config CPU_SH4AL_DSP
218 bool
219 select CPU_SH4A
220 select CPU_HAS_DSP
221
ea0e1a9a
PM
222config CPU_SH5
223 bool
224 select CPU_HAS_FPU
add47067 225 select SYS_SUPPORTS_TMU
ffb4a73d 226 select SYS_SUPPORTS_HUGETLBFS if MMU
ea0e1a9a 227
b5f42db0
PM
228config CPU_SHX2
229 bool
230
231config CPU_SHX3
232 bool
01be5d63 233 select DMA_COHERENT
4b478ee2
PM
234 select SYS_SUPPORTS_SMP
235 select SYS_SUPPORTS_NUMA
b5f42db0 236
dc65a977
PM
237config ARCH_SHMOBILE
238 bool
77594912 239 select ARCH_SUSPEND_POSSIBLE
ac2c596b
MD
240 select PM
241 select PM_RUNTIME
dc65a977 242
86c8c047
MF
243config CPU_HAS_PMU
244 depends on CPU_SH4 || CPU_SH4A
245 default y
246 bool
247
3cc000b5
PM
248if SUPERH32
249
b5f42db0
PM
250choice
251 prompt "Processor sub-type selection"
252
253#
254# Processor subtypes
255#
256
257# SH-2 Processor Support
258
259config CPU_SUBTYPE_SH7619
260 bool "Support SH7619 processor"
261 select CPU_SH2
f5ad881b 262 select SYS_SUPPORTS_CMT
b5f42db0
PM
263
264# SH-2A Processor Support
265
2825999e
PG
266config CPU_SUBTYPE_SH7201
267 bool "Support SH7201 processor"
268 select CPU_SH2A
269 select CPU_HAS_FPU
da107c6e 270 select SYS_SUPPORTS_MTU2
2825999e 271
6d01f510
PM
272config CPU_SUBTYPE_SH7203
273 bool "Support SH7203 processor"
274 select CPU_SH2A
74d99a5e 275 select CPU_HAS_FPU
f5ad881b 276 select SYS_SUPPORTS_CMT
da107c6e 277 select SYS_SUPPORTS_MTU2
f020c92d 278 select ARCH_WANT_OPTIONAL_GPIOLIB
6d01f510 279
b5f42db0
PM
280config CPU_SUBTYPE_SH7206
281 bool "Support SH7206 processor"
282 select CPU_SH2A
f5ad881b 283 select SYS_SUPPORTS_CMT
da107c6e 284 select SYS_SUPPORTS_MTU2
b5f42db0 285
a8f67f4b
PM
286config CPU_SUBTYPE_SH7263
287 bool "Support SH7263 processor"
288 select CPU_SH2A
74d99a5e 289 select CPU_HAS_FPU
f5ad881b 290 select SYS_SUPPORTS_CMT
da107c6e 291 select SYS_SUPPORTS_MTU2
a8f67f4b 292
2ad69908
PM
293config CPU_SUBTYPE_MXG
294 bool "Support MX-G processor"
295 select CPU_SH2A
da107c6e 296 select SYS_SUPPORTS_MTU2
2ad69908
PM
297 help
298 Select MX-G if running on an R8A03022BG part.
299
b5f42db0
PM
300# SH-3 Processor Support
301
302config CPU_SUBTYPE_SH7705
303 bool "Support SH7705 processor"
304 select CPU_SH3
305
306config CPU_SUBTYPE_SH7706
307 bool "Support SH7706 processor"
308 select CPU_SH3
309 help
310 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
311
312config CPU_SUBTYPE_SH7707
313 bool "Support SH7707 processor"
314 select CPU_SH3
315 help
316 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
317
318config CPU_SUBTYPE_SH7708
319 bool "Support SH7708 processor"
320 select CPU_SH3
321 help
322 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
323 if you have a 100 Mhz SH-3 HD6417708R CPU.
324
325config CPU_SUBTYPE_SH7709
326 bool "Support SH7709 processor"
327 select CPU_SH3
328 help
329 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
330
331config CPU_SUBTYPE_SH7710
332 bool "Support SH7710 processor"
333 select CPU_SH3
334 select CPU_HAS_DSP
335 help
336 Select SH7710 if you have a SH3-DSP SH7710 CPU.
337
338config CPU_SUBTYPE_SH7712
339 bool "Support SH7712 processor"
340 select CPU_SH3
341 select CPU_HAS_DSP
342 help
343 Select SH7712 if you have a SH3-DSP SH7712 CPU.
344
345config CPU_SUBTYPE_SH7720
346 bool "Support SH7720 processor"
347 select CPU_SH3
348 select CPU_HAS_DSP
2b23a882 349 select SYS_SUPPORTS_CMT
f020c92d 350 select ARCH_WANT_OPTIONAL_GPIOLIB
e3e9887e 351 select USB_ARCH_HAS_OHCI
7b61ca5d 352 select USB_OHCI_SH if USB_OHCI_HCD
b5f42db0
PM
353 help
354 Select SH7720 if you have a SH3-DSP SH7720 CPU.
355
31a49c4b
YS
356config CPU_SUBTYPE_SH7721
357 bool "Support SH7721 processor"
358 select CPU_SH3
359 select CPU_HAS_DSP
2b23a882 360 select SYS_SUPPORTS_CMT
e3e9887e 361 select USB_ARCH_HAS_OHCI
7b61ca5d 362 select USB_OHCI_SH if USB_OHCI_HCD
31a49c4b
YS
363 help
364 Select SH7721 if you have a SH3-DSP SH7721 CPU.
365
b5f42db0
PM
366# SH-4 Processor Support
367
368config CPU_SUBTYPE_SH7750
369 bool "Support SH7750 processor"
370 select CPU_SH4
371 help
372 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
373
374config CPU_SUBTYPE_SH7091
375 bool "Support SH7091 processor"
376 select CPU_SH4
377 help
378 Select SH7091 if you have an SH-4 based Sega device (such as
379 the Dreamcast, Naomi, and Naomi 2).
380
381config CPU_SUBTYPE_SH7750R
382 bool "Support SH7750R processor"
383 select CPU_SH4
384
385config CPU_SUBTYPE_SH7750S
386 bool "Support SH7750S processor"
387 select CPU_SH4
388
389config CPU_SUBTYPE_SH7751
390 bool "Support SH7751 processor"
391 select CPU_SH4
392 help
393 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
394 or if you have a HD6417751R CPU.
395
396config CPU_SUBTYPE_SH7751R
397 bool "Support SH7751R processor"
398 select CPU_SH4
399
400config CPU_SUBTYPE_SH7760
401 bool "Support SH7760 processor"
402 select CPU_SH4
403
404config CPU_SUBTYPE_SH4_202
405 bool "Support SH4-202 processor"
406 select CPU_SH4
407
408# SH-4A Processor Support
409
178dd0cd
PM
410config CPU_SUBTYPE_SH7723
411 bool "Support SH7723 processor"
412 select CPU_SH4A
413 select CPU_SHX2
dc65a977 414 select ARCH_SHMOBILE
178dd0cd 415 select ARCH_SPARSEMEM_ENABLE
f5ad881b 416 select SYS_SUPPORTS_CMT
f020c92d 417 select ARCH_WANT_OPTIONAL_GPIOLIB
178dd0cd
PM
418 help
419 Select SH7723 if you have an SH-MobileR2 CPU.
420
0207a2ef
KM
421config CPU_SUBTYPE_SH7724
422 bool "Support SH7724 processor"
423 select CPU_SH4A
424 select CPU_SHX2
59fe700d 425 select ARCH_SHMOBILE
0207a2ef
KM
426 select ARCH_SPARSEMEM_ENABLE
427 select SYS_SUPPORTS_CMT
f020c92d 428 select ARCH_WANT_OPTIONAL_GPIOLIB
0207a2ef
KM
429 help
430 Select SH7724 if you have an SH-MobileR2R CPU.
431
c01f0f1a
YS
432config CPU_SUBTYPE_SH7757
433 bool "Support SH7757 processor"
434 select CPU_SH4A
435 select CPU_SHX2
f020c92d 436 select ARCH_WANT_OPTIONAL_GPIOLIB
0fe48601
YS
437 select USB_ARCH_HAS_OHCI
438 select USB_ARCH_HAS_EHCI
c01f0f1a
YS
439 help
440 Select SH7757 if you have a SH4A SH7757 CPU.
441
7d740a06
YS
442config CPU_SUBTYPE_SH7763
443 bool "Support SH7763 processor"
444 select CPU_SH4A
e3e9887e 445 select USB_ARCH_HAS_OHCI
7b61ca5d 446 select USB_OHCI_SH if USB_OHCI_HCD
7d740a06
YS
447 help
448 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
449
b5f42db0
PM
450config CPU_SUBTYPE_SH7770
451 bool "Support SH7770 processor"
452 select CPU_SH4A
453
454config CPU_SUBTYPE_SH7780
455 bool "Support SH7780 processor"
456 select CPU_SH4A
457
458config CPU_SUBTYPE_SH7785
459 bool "Support SH7785 processor"
460 select CPU_SH4A
461 select CPU_SHX2
55ba99eb
KM
462 select ARCH_SPARSEMEM_ENABLE
463 select SYS_SUPPORTS_NUMA
f020c92d 464 select ARCH_WANT_OPTIONAL_GPIOLIB
55ba99eb
KM
465
466config CPU_SUBTYPE_SH7786
467 bool "Support SH7786 processor"
468 select CPU_SH4A
37042fbd 469 select CPU_SHX3
8263a67e 470 select CPU_HAS_PTEAEX
2eb2a436 471 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
f020c92d 472 select ARCH_WANT_OPTIONAL_GPIOLIB
e3e9887e 473 select USB_ARCH_HAS_OHCI
7b61ca5d 474 select USB_OHCI_SH if USB_OHCI_HCD
e3e9887e 475 select USB_ARCH_HAS_EHCI
7b61ca5d 476 select USB_EHCI_SH if USB_EHCI_HCD
b5f42db0
PM
477
478config CPU_SUBTYPE_SHX3
479 bool "Support SH-X3 processor"
480 select CPU_SH4A
481 select CPU_SHX3
5840263e 482 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
742759ea 483 select ARCH_REQUIRE_GPIOLIB
b5f42db0
PM
484
485# SH4AL-DSP Processor Support
486
487config CPU_SUBTYPE_SH7343
488 bool "Support SH7343 processor"
489 select CPU_SH4AL_DSP
dc65a977 490 select ARCH_SHMOBILE
f5ad881b 491 select SYS_SUPPORTS_CMT
b5f42db0
PM
492
493config CPU_SUBTYPE_SH7722
494 bool "Support SH7722 processor"
495 select CPU_SH4AL_DSP
496 select CPU_SHX2
dc65a977 497 select ARCH_SHMOBILE
b5f42db0
PM
498 select ARCH_SPARSEMEM_ENABLE
499 select SYS_SUPPORTS_NUMA
f5ad881b 500 select SYS_SUPPORTS_CMT
f020c92d 501 select ARCH_WANT_OPTIONAL_GPIOLIB
9109a30e
MD
502
503config CPU_SUBTYPE_SH7366
504 bool "Support SH7366 processor"
505 select CPU_SH4AL_DSP
506 select CPU_SHX2
dc65a977 507 select ARCH_SHMOBILE
9109a30e
MD
508 select ARCH_SPARSEMEM_ENABLE
509 select SYS_SUPPORTS_NUMA
f5ad881b 510 select SYS_SUPPORTS_CMT
b5f42db0 511
3cc000b5
PM
512endchoice
513
514endif
515
516if SUPERH64
517
518choice
519 prompt "Processor sub-type selection"
520
ea0e1a9a
PM
521# SH-5 Processor Support
522
523config CPU_SUBTYPE_SH5_101
524 bool "Support SH5-101 processor"
525 select CPU_SH5
526
527config CPU_SUBTYPE_SH5_103
528 bool "Support SH5-103 processor"
8ef97dd7 529 select CPU_SH5
ea0e1a9a 530
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PM
531endchoice
532
3cc000b5
PM
533endif
534
f3d22298 535source "arch/sh/mm/Kconfig"
939a24a6 536
4690bdc7 537source "arch/sh/Kconfig.cpu"
f3d22298 538
939a24a6 539source "arch/sh/boards/Kconfig"
32351a28 540
32351a28
PM
541menu "Timer and clock configuration"
542
9570ef20
MD
543config SH_TIMER_TMU
544 bool "TMU timer driver"
f19900b2 545 depends on SYS_SUPPORTS_TMU
9570ef20 546 default y
9570ef20
MD
547 help
548 This enables the build of the TMU timer driver.
549
f5ad881b 550config SH_TIMER_CMT
f425752f
MD
551 bool "CMT timer driver"
552 depends on SYS_SUPPORTS_CMT
553 default y
f425752f
MD
554 help
555 This enables build of the CMT timer driver.
f5ad881b 556
d5ed4c2e
MD
557config SH_TIMER_MTU2
558 bool "MTU2 timer driver"
3280c886 559 depends on SYS_SUPPORTS_MTU2
d5ed4c2e 560 default y
d5ed4c2e
MD
561 help
562 This enables build of the MTU2 timer driver.
563
cad82448
PM
564config SH_PCLK_FREQ
565 int "Peripheral clock frequency (in Hz)"
8152a74b 566 depends on SH_CLK_CPG_LEGACY
9d4436a6 567 default "31250000" if CPU_SUBTYPE_SH7619
8152a74b
PM
568 default "33333333" if CPU_SUBTYPE_SH7770 || \
569 CPU_SUBTYPE_SH7760 || \
570 CPU_SUBTYPE_SH7705 || \
571 CPU_SUBTYPE_SH7203 || \
572 CPU_SUBTYPE_SH7206 || \
573 CPU_SUBTYPE_SH7263 || \
43a1839c 574 CPU_SUBTYPE_MXG
05627486 575 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
cad82448 576 default "66000000" if CPU_SUBTYPE_SH4_202
05627486 577 default "50000000"
1da177e4 578 help
cad82448
PM
579 This option is used to specify the peripheral clock frequency.
580 This is necessary for determining the reference clock value on
581 platforms lacking an RTC.
1da177e4 582
36aa1e32
PM
583config SH_CLK_CPG
584 def_bool y
585
253b0887 586config SH_CLK_CPG_LEGACY
36aa1e32 587 depends on SH_CLK_CPG
43a1839c 588 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
5924ad0d 589 !CPU_SHX3 && !CPU_SUBTYPE_SH7757
253b0887 590
57be2b48
PM
591source "kernel/time/Kconfig"
592
32351a28
PM
593endmenu
594
cad82448
PM
595menu "CPU Frequency scaling"
596
597source "drivers/cpufreq/Kconfig"
1da177e4 598
cad82448
PM
599config SH_CPU_FREQ
600 tristate "SuperH CPU Frequency driver"
cb5ec75b 601 depends on CPU_FREQ
cad82448 602 select CPU_FREQ_TABLE
1da177e4 603 help
8a655053
PM
604 This adds the cpufreq driver for SuperH. Any CPU that supports
605 clock rate rounding through the clock framework can use this
606 driver. While it will make the kernel slightly larger, this is
607 harmless for CPUs that don't support rate rounding. The driver
608 will also generate a notice in the boot log before disabling
609 itself if the CPU in question is not capable of rate rounding.
1da177e4 610
cad82448 611 For details, take a look at <file:Documentation/cpu-freq>.
1da177e4
LT
612
613 If unsure, say N.
614
cad82448
PM
615endmenu
616
9f5e8eee
PM
617source "arch/sh/drivers/Kconfig"
618
cad82448 619endmenu
1da177e4 620
cad82448
PM
621menu "Kernel features"
622
91b91d01
PM
623source kernel/Kconfig.hz
624
cad82448
PM
625config KEXEC
626 bool "kexec system call (EXPERIMENTAL)"
f36b59d1 627 depends on SUPERH32 && EXPERIMENTAL && MMU
1da177e4 628 help
cad82448
PM
629 kexec is a system call that implements the ability to shutdown your
630 current kernel, and to start another kernel. It is like a reboot
1f1332f7 631 but it is independent of the system firmware. And like a reboot
cad82448
PM
632 you can start any kernel with it, not just Linux.
633
1f1332f7 634 The name comes from the similarity to the exec system call.
cad82448
PM
635
636 It is an ongoing process to be certain the hardware in a machine
637 is properly shutdown, so do not be surprised if this code does not
638 initially work for you. It may help to enable device hotplugging
639 support. As of this writing the exact hardware interface is
640 strongly in flux, so no good recommendation can be made.
641
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642config CRASH_DUMP
643 bool "kernel crash dumps (EXPERIMENTAL)"
d523e1ae 644 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
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645 help
646 Generate crash dump after being started by kexec.
647 This should be normally only set in special crash dump kernels
648 which are loaded in the main kernel with kexec-tools into
649 a specially reserved region and then later executed after
650 a crash by kdump/kexec. The crash dump kernel must be compiled
651 to a memory address not used by the main kernel using
652 MEMORY_START.
653
654 For more details see Documentation/kdump/kdump.txt
655
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656config KEXEC_JUMP
657 bool "kexec jump (EXPERIMENTAL)"
658 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
659 help
660 Jump between original kernel and kexeced kernel and invoke
661 code via KEXEC
662
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663config SECCOMP
664 bool "Enable seccomp to safely compute untrusted bytecode"
665 depends on PROC_FS
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666 help
667 This kernel feature is useful for number crunching applications
668 that may need to compute untrusted bytecode during their
669 execution. By using pipes or other transports made available to
670 the process as file descriptors supporting the read/write
671 syscalls, it's possible to isolate those applications in
672 their own address space using seccomp. Once seccomp is
673 enabled via prctl, it cannot be disabled and the task is only
674 allowed to execute a few safe syscalls defined by each seccomp
675 mode.
676
677 If unsure, say N.
678
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679config SMP
680 bool "Symmetric multi-processing support"
357d5946 681 depends on SYS_SUPPORTS_SMP
490f5de5 682 select USE_GENERIC_SMP_HELPERS
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683 ---help---
684 This enables support for systems with more than one CPU. If you have
685 a system with only one CPU, like most personal computers, say N. If
686 you have a system with more than one CPU, say Y.
687
688 If you say N here, the kernel will run on single and multiprocessor
689 machines, but will use only one CPU of a multiprocessor machine. If
690 you say Y here, the kernel will run on many, but not all,
691 singleprocessor machines. On a singleprocessor machine, the kernel
692 will run faster if you say N here.
693
694 People using multiprocessor machines who say Y here should also say
695 Y to "Enhanced Real Time Clock Support", below.
696
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697 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
698 available at <http://www.tldp.org/docs.html#howto>.
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699
700 If you don't know what to do here, say N.
701
702config NR_CPUS
703 int "Maximum number of CPUs (2-32)"
704 range 2 32
705 depends on SMP
2eb2a436 706 default "4" if CPU_SUBTYPE_SHX3
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707 default "2"
708 help
709 This allows you to specify the maximum number of CPUs which this
710 kernel will support. The maximum supported value is 32 and the
711 minimum value which makes sense is 2.
712
713 This is purely to save memory - each supported CPU adds
714 approximately eight kilobytes to the kernel image.
715
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716config HOTPLUG_CPU
717 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
718 depends on SMP && HOTPLUG && EXPERIMENTAL
719 help
720 Say Y here to experiment with turning CPUs off and on. CPUs
721 can be controlled through /sys/devices/system/cpu.
722
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723source "kernel/Kconfig.preempt"
724
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725config GUSA
726 def_bool y
1efe4ce3 727 depends on !SMP && SUPERH32
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728 help
729 This enables support for gUSA (general UserSpace Atomicity).
730 This is the default implementation for both UP and non-ll/sc
731 CPUs, and is used by the libc, amongst others.
732
733 For additional information, design information can be found
734 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
735
736 This should only be disabled for special cases where alternate
737 atomicity implementations exist.
738
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739config GUSA_RB
740 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
741 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
742 help
743 Enabling this option will allow the kernel to implement some
692105b8 744 atomic operations using a software implementation of load-locked/
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745 store-conditional (LLSC). On machines which do not have hardware
746 LLSC, this should be more efficient than the other alternative of
692105b8 747 disabling interrupts around the atomic sequence.
1efe4ce3 748
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749config HW_PERF_EVENTS
750 bool "Enable hardware performance counter support for perf events"
751 depends on PERF_EVENTS && CPU_HAS_PMU
752 default y
753 help
754 Enable hardware performance counter support for perf events. If
755 disabled, perf events will use software events only.
756
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757source "drivers/sh/Kconfig"
758
cad82448 759endmenu
1da177e4 760
cad82448 761menu "Boot options"
1da177e4 762
cad82448 763config ZERO_PAGE_OFFSET
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764 hex
765 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
766 SH_7751_SOLUTION_ENGINE
767 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
7a847f81 768 default "0x00002000" if PAGE_SIZE_8KB
cad82448 769 default "0x00001000"
1da177e4 770 help
cad82448 771 This sets the default offset of zero page.
1da177e4 772
cad82448 773config BOOT_LINK_OFFSET
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774 hex
775 default "0x00210000" if SH_SHMIN
a2e76c80 776 default "0x00400000" if SH_CAYMAN
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777 default "0x00810000" if SH_7780_SOLUTION_ENGINE
778 default "0x009e0000" if SH_TITAN
779 default "0x01800000" if SH_SDK7780
780 default "0x02000000" if SH_EDOSK7760
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781 default "0x00800000"
782 help
783 This option allows you to set the link address offset of the zImage.
784 This can be useful if you are on a board which has a small amount of
785 memory.
1da177e4 786
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787config ENTRY_OFFSET
788 hex
789 default "0x00001000" if PAGE_SIZE_4KB
790 default "0x00002000" if PAGE_SIZE_8KB
791 default "0x00004000" if PAGE_SIZE_16KB
792 default "0x00010000" if PAGE_SIZE_64KB
793 default "0x00000000"
794
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795config ROMIMAGE_MMCIF
796 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
797 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
798 help
799 Say Y here to include experimental MMCIF loading code in
800 romImage. With this enabled it is possible to write the romImage
801 kernel image to an MMC card and boot the kernel straight from
802 the reset vector. At reset the processor Mask ROM will load the
803 first part of the romImage which in turn loads the rest the kernel
804 image to RAM using the MMCIF hardware block.
805
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806choice
807 prompt "Kernel command line"
808 optional
809 default CMDLINE_OVERWRITE
810 help
811 Setting this option allows the kernel command line arguments
812 to be set.
813
814config CMDLINE_OVERWRITE
815 bool "Overwrite bootloader kernel arguments"
816 help
817 Given string will overwrite any arguments passed in by
818 a bootloader.
819
820config CMDLINE_EXTEND
821 bool "Extend bootloader kernel arguments"
822 help
823 Given string will be concatenated with arguments passed in
824 by a bootloader.
825
826endchoice
1da177e4 827
cad82448 828config CMDLINE
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829 string "Kernel command line arguments string"
830 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
cad82448 831 default "console=ttySC1,115200"
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832
833endmenu
834
cad82448 835menu "Bus options"
1da177e4 836
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837config SUPERHYWAY
838 tristate "SuperHyway Bus support"
839 depends on CPU_SUBTYPE_SH4_202
1da177e4 840
17be2d2b 841config MAPLE
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842 bool "Maple Bus support"
843 depends on SH_DREAMCAST
844 help
845 The Maple Bus is SEGA's serial communication bus for peripherals
846 on the Dreamcast. Without this bus support you won't be able to
847 get your Dreamcast keyboard etc to work, so most users
848 probably want to say 'Y' here, unless you are only using the
849 Dreamcast with a serial line terminal or a remote network
850 connection.
17be2d2b 851
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852config PCI
853 bool "PCI support"
854 depends on SYS_SUPPORTS_PCI
320e68da 855 select PCI_DOMAINS
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856 help
857 Find out whether you have a PCI motherboard. PCI is the name of a
858 bus system, i.e. the way the CPU talks to the other stuff inside
859 your box. If you have PCI, say Y, otherwise N.
1da177e4 860
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861config PCI_DOMAINS
862 bool
863
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864source "drivers/pci/pcie/Kconfig"
865
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866source "drivers/pci/Kconfig"
867
868source "drivers/pcmcia/Kconfig"
869
870source "drivers/pci/hotplug/Kconfig"
871
872endmenu
873
874menu "Executable file formats"
875
876source "fs/Kconfig.binfmt"
877
878endmenu
879
3aa770e7 880menu "Power management options (EXPERIMENTAL)"
af998a9a 881depends on EXPERIMENTAL
f4cb5700 882
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883source "kernel/power/Kconfig"
884
885source "drivers/cpuidle/Kconfig"
3aa770e7 886
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887endmenu
888
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889source "net/Kconfig"
890
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891source "drivers/Kconfig"
892
893source "fs/Kconfig"
894
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895source "arch/sh/Kconfig.debug"
896
897source "security/Kconfig"
898
899source "crypto/Kconfig"
900
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901menuconfig VIRTUALIZATION
902 bool "Virtualization"
903 default n
904 ---help---
905 Say Y here to get to see options for using your Linux host to run other
906 operating systems inside virtual machines (guests).
907 This option alone does not add any kernel code.
908
909 If you say N, all options in this submenu will be skipped and disabled.
910
911if VIRTUALIZATION
912
913source drivers/virtio/Kconfig
914
915endif # VIRTUALIZATION
916
1da177e4 917source "lib/Kconfig"
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