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[net-next-2.6.git] / arch / sh / Kconfig
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1da177e4 1config SUPERH
ea0e1a9a 2 def_bool y
7a440c95 3 select EMBEDDED
9483a578 4 select HAVE_CLK
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
72f0c137 14 select PERF_USE_VMALLOC
df8ce259 15 select HAVE_KERNEL_GZIP
07e88e1b
PM
16 select HAVE_KERNEL_BZIP2
17 select HAVE_KERNEL_LZMA
c7b16efb 18 select HAVE_KERNEL_LZO
a74f7e04 19 select HAVE_SYSCALL_TRACEPOINTS
eaaaeef3 20 select HAVE_REGS_AND_STACK_ACCESS_API
57b81330
PM
21 select HAVE_GENERIC_HARDIRQS
22 select HAVE_SPARSE_IRQ
6eac1af0 23 select RTC_LIB
f01789c6 24 select GENERIC_ATOMIC64
1e5cefd0 25 select GENERIC_HARDIRQS_NO_DEPRECATED
1da177e4
LT
26 help
27 The SuperH is a RISC processor targeted for use in embedded systems
28 and consumer electronics; it was also used in the Sega Dreamcast
29 gaming console. The SuperH port has a home page at
30 <http://www.linux-sh.org/>.
31
39d28a2d 32config SUPERH32
3cc000b5 33 def_bool ARCH = "sh"
d39f5450
CS
34 select HAVE_KPROBES
35 select HAVE_KRETPROBES
6d63e73d 36 select HAVE_IOREMAP_PROT if MMU && !X2TLB
694f94f2 37 select HAVE_FUNCTION_TRACER
fad57feb
MF
38 select HAVE_FTRACE_MCOUNT_RECORD
39 select HAVE_DYNAMIC_FTRACE
c1340c05 40 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
e4b053d9 41 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
327933f5 42 select HAVE_FUNCTION_GRAPH_TRACER
ab6e570b 43 select HAVE_ARCH_KGDB
6fbfe8d7 44 select HAVE_HW_BREAKPOINT
0102752e 45 select HAVE_MIXED_BREAKPOINTS_REGS
e583d6b3 46 select PERF_EVENTS
8dafc346 47 select ARCH_HIBERNATION_POSSIBLE if MMU
57b81330 48 select SPARSE_IRQ
ea0e1a9a
PM
49
50config SUPERH64
3cc000b5 51 def_bool ARCH = "sh64"
39d28a2d 52
f42b7e3d
PM
53config ARCH_DEFCONFIG
54 string
55 default "arch/sh/configs/shx3_defconfig" if SUPERH32
56 default "arch/sh/configs/cayman_defconfig" if SUPERH64
57
1da177e4 58config RWSEM_GENERIC_SPINLOCK
d7ef4fb3 59 def_bool y
1da177e4
LT
60
61config RWSEM_XCHGADD_ALGORITHM
62 bool
63
fa691511
PM
64config GENERIC_BUG
65 def_bool y
a82d53ec 66 depends on BUG && SUPERH32
fa691511 67
3767f3f1
PM
68config GENERIC_CSUM
69 def_bool y
70 depends on SUPERH64
71
e2268c71 72config GENERIC_FIND_NEXT_BIT
d7ef4fb3 73 def_bool y
e2268c71
AM
74
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
PM
163config NO_IOPORT
164 bool
165
e7cc9a73
MD
166config IO_TRAPPED
167 bool
168
01be5d63
PM
169config DMA_COHERENT
170 bool
171
172config DMA_NONCOHERENT
173 def_bool !DMA_COHERENT
174
5cabbb62
FT
175config NEED_DMA_MAP_STATE
176 def_bool DMA_NONCOHERENT
177
18e98307
FT
178config NEED_SG_DMA_LENGTH
179 def_bool y
180
1da177e4
LT
181source "init/Kconfig"
182
dc52ddc0
MH
183source "kernel/Kconfig.freezer"
184
1da177e4
LT
185menu "System type"
186
b5f42db0
PM
187#
188# Processor families
189#
190config CPU_SH2
191 bool
192
193config CPU_SH2A
194 bool
195 select CPU_SH2
e2fcf74f 196 select UNCACHED_MAPPING
b5f42db0
PM
197
198config CPU_SH3
199 bool
200 select CPU_HAS_INTEVT
201 select CPU_HAS_SR_RB
4fa48e17 202 select SYS_SUPPORTS_TMU
b5f42db0
PM
203
204config CPU_SH4
205 bool
206 select CPU_HAS_INTEVT
207 select CPU_HAS_SR_RB
b5f42db0 208 select CPU_HAS_FPU if !CPU_SH4AL_DSP
4fa48e17 209 select SYS_SUPPORTS_TMU
ffb4a73d 210 select SYS_SUPPORTS_HUGETLBFS if MMU
b5f42db0
PM
211
212config CPU_SH4A
213 bool
214 select CPU_SH4
215
216config CPU_SH4AL_DSP
217 bool
218 select CPU_SH4A
219 select CPU_HAS_DSP
220
ea0e1a9a
PM
221config CPU_SH5
222 bool
223 select CPU_HAS_FPU
add47067 224 select SYS_SUPPORTS_TMU
ffb4a73d 225 select SYS_SUPPORTS_HUGETLBFS if MMU
ea0e1a9a 226
b5f42db0
PM
227config CPU_SHX2
228 bool
229
230config CPU_SHX3
231 bool
01be5d63 232 select DMA_COHERENT
4b478ee2
PM
233 select SYS_SUPPORTS_SMP
234 select SYS_SUPPORTS_NUMA
b5f42db0 235
dc65a977
PM
236config ARCH_SHMOBILE
237 bool
77594912 238 select ARCH_SUSPEND_POSSIBLE
ac2c596b
MD
239 select PM
240 select PM_RUNTIME
dc65a977 241
86c8c047
MF
242config CPU_HAS_PMU
243 depends on CPU_SH4 || CPU_SH4A
244 default y
245 bool
246
3cc000b5
PM
247if SUPERH32
248
b5f42db0
PM
249choice
250 prompt "Processor sub-type selection"
251
252#
253# Processor subtypes
254#
255
256# SH-2 Processor Support
257
258config CPU_SUBTYPE_SH7619
259 bool "Support SH7619 processor"
260 select CPU_SH2
f5ad881b 261 select SYS_SUPPORTS_CMT
b5f42db0
PM
262
263# SH-2A Processor Support
264
2825999e
PG
265config CPU_SUBTYPE_SH7201
266 bool "Support SH7201 processor"
267 select CPU_SH2A
268 select CPU_HAS_FPU
da107c6e 269 select SYS_SUPPORTS_MTU2
2825999e 270
6d01f510
PM
271config CPU_SUBTYPE_SH7203
272 bool "Support SH7203 processor"
273 select CPU_SH2A
74d99a5e 274 select CPU_HAS_FPU
f5ad881b 275 select SYS_SUPPORTS_CMT
da107c6e 276 select SYS_SUPPORTS_MTU2
6d01f510 277
b5f42db0
PM
278config CPU_SUBTYPE_SH7206
279 bool "Support SH7206 processor"
280 select CPU_SH2A
f5ad881b 281 select SYS_SUPPORTS_CMT
da107c6e 282 select SYS_SUPPORTS_MTU2
b5f42db0 283
a8f67f4b
PM
284config CPU_SUBTYPE_SH7263
285 bool "Support SH7263 processor"
286 select CPU_SH2A
74d99a5e 287 select CPU_HAS_FPU
f5ad881b 288 select SYS_SUPPORTS_CMT
da107c6e 289 select SYS_SUPPORTS_MTU2
a8f67f4b 290
2ad69908
PM
291config CPU_SUBTYPE_MXG
292 bool "Support MX-G processor"
293 select CPU_SH2A
da107c6e 294 select SYS_SUPPORTS_MTU2
2ad69908
PM
295 help
296 Select MX-G if running on an R8A03022BG part.
297
b5f42db0
PM
298# SH-3 Processor Support
299
300config CPU_SUBTYPE_SH7705
301 bool "Support SH7705 processor"
302 select CPU_SH3
303
304config CPU_SUBTYPE_SH7706
305 bool "Support SH7706 processor"
306 select CPU_SH3
307 help
308 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
309
310config CPU_SUBTYPE_SH7707
311 bool "Support SH7707 processor"
312 select CPU_SH3
313 help
314 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
315
316config CPU_SUBTYPE_SH7708
317 bool "Support SH7708 processor"
318 select CPU_SH3
319 help
320 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
321 if you have a 100 Mhz SH-3 HD6417708R CPU.
322
323config CPU_SUBTYPE_SH7709
324 bool "Support SH7709 processor"
325 select CPU_SH3
326 help
327 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
328
329config CPU_SUBTYPE_SH7710
330 bool "Support SH7710 processor"
331 select CPU_SH3
332 select CPU_HAS_DSP
333 help
334 Select SH7710 if you have a SH3-DSP SH7710 CPU.
335
336config CPU_SUBTYPE_SH7712
337 bool "Support SH7712 processor"
338 select CPU_SH3
339 select CPU_HAS_DSP
340 help
341 Select SH7712 if you have a SH3-DSP SH7712 CPU.
342
343config CPU_SUBTYPE_SH7720
344 bool "Support SH7720 processor"
345 select CPU_SH3
346 select CPU_HAS_DSP
2b23a882 347 select SYS_SUPPORTS_CMT
b5f42db0
PM
348 help
349 Select SH7720 if you have a SH3-DSP SH7720 CPU.
350
31a49c4b
YS
351config CPU_SUBTYPE_SH7721
352 bool "Support SH7721 processor"
353 select CPU_SH3
354 select CPU_HAS_DSP
2b23a882 355 select SYS_SUPPORTS_CMT
31a49c4b
YS
356 help
357 Select SH7721 if you have a SH3-DSP SH7721 CPU.
358
b5f42db0
PM
359# SH-4 Processor Support
360
361config CPU_SUBTYPE_SH7750
362 bool "Support SH7750 processor"
363 select CPU_SH4
364 help
365 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
366
367config CPU_SUBTYPE_SH7091
368 bool "Support SH7091 processor"
369 select CPU_SH4
370 help
371 Select SH7091 if you have an SH-4 based Sega device (such as
372 the Dreamcast, Naomi, and Naomi 2).
373
374config CPU_SUBTYPE_SH7750R
375 bool "Support SH7750R processor"
376 select CPU_SH4
377
378config CPU_SUBTYPE_SH7750S
379 bool "Support SH7750S processor"
380 select CPU_SH4
381
382config CPU_SUBTYPE_SH7751
383 bool "Support SH7751 processor"
384 select CPU_SH4
385 help
386 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
387 or if you have a HD6417751R CPU.
388
389config CPU_SUBTYPE_SH7751R
390 bool "Support SH7751R processor"
391 select CPU_SH4
392
393config CPU_SUBTYPE_SH7760
394 bool "Support SH7760 processor"
395 select CPU_SH4
396
397config CPU_SUBTYPE_SH4_202
398 bool "Support SH4-202 processor"
399 select CPU_SH4
400
401# SH-4A Processor Support
402
178dd0cd
PM
403config CPU_SUBTYPE_SH7723
404 bool "Support SH7723 processor"
405 select CPU_SH4A
406 select CPU_SHX2
dc65a977 407 select ARCH_SHMOBILE
178dd0cd 408 select ARCH_SPARSEMEM_ENABLE
f5ad881b 409 select SYS_SUPPORTS_CMT
178dd0cd
PM
410 help
411 Select SH7723 if you have an SH-MobileR2 CPU.
412
0207a2ef
KM
413config CPU_SUBTYPE_SH7724
414 bool "Support SH7724 processor"
415 select CPU_SH4A
416 select CPU_SHX2
59fe700d 417 select ARCH_SHMOBILE
0207a2ef
KM
418 select ARCH_SPARSEMEM_ENABLE
419 select SYS_SUPPORTS_CMT
420 help
421 Select SH7724 if you have an SH-MobileR2R CPU.
422
c01f0f1a
YS
423config CPU_SUBTYPE_SH7757
424 bool "Support SH7757 processor"
425 select CPU_SH4A
426 select CPU_SHX2
427 help
428 Select SH7757 if you have a SH4A SH7757 CPU.
429
7d740a06
YS
430config CPU_SUBTYPE_SH7763
431 bool "Support SH7763 processor"
432 select CPU_SH4A
433 help
434 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
435
b5f42db0
PM
436config CPU_SUBTYPE_SH7770
437 bool "Support SH7770 processor"
438 select CPU_SH4A
439
440config CPU_SUBTYPE_SH7780
441 bool "Support SH7780 processor"
442 select CPU_SH4A
443
444config CPU_SUBTYPE_SH7785
445 bool "Support SH7785 processor"
446 select CPU_SH4A
447 select CPU_SHX2
55ba99eb
KM
448 select ARCH_SPARSEMEM_ENABLE
449 select SYS_SUPPORTS_NUMA
450
451config CPU_SUBTYPE_SH7786
452 bool "Support SH7786 processor"
453 select CPU_SH4A
37042fbd 454 select CPU_SHX3
8263a67e 455 select CPU_HAS_PTEAEX
2eb2a436 456 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
b5f42db0
PM
457
458config CPU_SUBTYPE_SHX3
459 bool "Support SH-X3 processor"
460 select CPU_SH4A
461 select CPU_SHX3
5840263e 462 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
742759ea 463 select ARCH_REQUIRE_GPIOLIB
b5f42db0
PM
464
465# SH4AL-DSP Processor Support
466
467config CPU_SUBTYPE_SH7343
468 bool "Support SH7343 processor"
469 select CPU_SH4AL_DSP
dc65a977 470 select ARCH_SHMOBILE
f5ad881b 471 select SYS_SUPPORTS_CMT
b5f42db0
PM
472
473config CPU_SUBTYPE_SH7722
474 bool "Support SH7722 processor"
475 select CPU_SH4AL_DSP
476 select CPU_SHX2
dc65a977 477 select ARCH_SHMOBILE
b5f42db0
PM
478 select ARCH_SPARSEMEM_ENABLE
479 select SYS_SUPPORTS_NUMA
f5ad881b 480 select SYS_SUPPORTS_CMT
9109a30e
MD
481
482config CPU_SUBTYPE_SH7366
483 bool "Support SH7366 processor"
484 select CPU_SH4AL_DSP
485 select CPU_SHX2
dc65a977 486 select ARCH_SHMOBILE
9109a30e
MD
487 select ARCH_SPARSEMEM_ENABLE
488 select SYS_SUPPORTS_NUMA
f5ad881b 489 select SYS_SUPPORTS_CMT
b5f42db0 490
3cc000b5
PM
491endchoice
492
493endif
494
495if SUPERH64
496
497choice
498 prompt "Processor sub-type selection"
499
ea0e1a9a
PM
500# SH-5 Processor Support
501
502config CPU_SUBTYPE_SH5_101
503 bool "Support SH5-101 processor"
504 select CPU_SH5
505
506config CPU_SUBTYPE_SH5_103
507 bool "Support SH5-103 processor"
8ef97dd7 508 select CPU_SH5
ea0e1a9a 509
b5f42db0
PM
510endchoice
511
3cc000b5
PM
512endif
513
f3d22298 514source "arch/sh/mm/Kconfig"
939a24a6 515
4690bdc7 516source "arch/sh/Kconfig.cpu"
f3d22298 517
939a24a6 518source "arch/sh/boards/Kconfig"
32351a28 519
32351a28
PM
520menu "Timer and clock configuration"
521
9570ef20
MD
522config SH_TIMER_TMU
523 bool "TMU timer driver"
f19900b2 524 depends on SYS_SUPPORTS_TMU
9570ef20 525 default y
9570ef20
MD
526 help
527 This enables the build of the TMU timer driver.
528
f5ad881b 529config SH_TIMER_CMT
f425752f
MD
530 bool "CMT timer driver"
531 depends on SYS_SUPPORTS_CMT
532 default y
f425752f
MD
533 help
534 This enables build of the CMT timer driver.
f5ad881b 535
d5ed4c2e
MD
536config SH_TIMER_MTU2
537 bool "MTU2 timer driver"
3280c886 538 depends on SYS_SUPPORTS_MTU2
d5ed4c2e 539 default y
d5ed4c2e
MD
540 help
541 This enables build of the MTU2 timer driver.
542
cad82448
PM
543config SH_PCLK_FREQ
544 int "Peripheral clock frequency (in Hz)"
8152a74b 545 depends on SH_CLK_CPG_LEGACY
9d4436a6 546 default "31250000" if CPU_SUBTYPE_SH7619
8152a74b
PM
547 default "33333333" if CPU_SUBTYPE_SH7770 || \
548 CPU_SUBTYPE_SH7760 || \
549 CPU_SUBTYPE_SH7705 || \
550 CPU_SUBTYPE_SH7203 || \
551 CPU_SUBTYPE_SH7206 || \
552 CPU_SUBTYPE_SH7263 || \
43a1839c 553 CPU_SUBTYPE_MXG
05627486 554 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
cad82448 555 default "66000000" if CPU_SUBTYPE_SH4_202
05627486 556 default "50000000"
1da177e4 557 help
cad82448
PM
558 This option is used to specify the peripheral clock frequency.
559 This is necessary for determining the reference clock value on
560 platforms lacking an RTC.
1da177e4 561
36aa1e32
PM
562config SH_CLK_CPG
563 def_bool y
564
253b0887 565config SH_CLK_CPG_LEGACY
36aa1e32 566 depends on SH_CLK_CPG
43a1839c 567 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
5924ad0d 568 !CPU_SHX3 && !CPU_SUBTYPE_SH7757
253b0887 569
9d4436a6
YS
570config SH_CLK_MD
571 int "CPU Mode Pin Setting"
6d01f510 572 depends on CPU_SH2
357d5946
PM
573 default 6 if CPU_SUBTYPE_SH7206
574 default 5 if CPU_SUBTYPE_SH7619
575 default 0
9d4436a6 576 help
11cbb70e 577 MD2 - MD0 pin setting.
9d4436a6 578
57be2b48
PM
579source "kernel/time/Kconfig"
580
32351a28
PM
581endmenu
582
cad82448
PM
583menu "CPU Frequency scaling"
584
585source "drivers/cpufreq/Kconfig"
1da177e4 586
cad82448
PM
587config SH_CPU_FREQ
588 tristate "SuperH CPU Frequency driver"
cb5ec75b 589 depends on CPU_FREQ
cad82448 590 select CPU_FREQ_TABLE
1da177e4 591 help
8a655053
PM
592 This adds the cpufreq driver for SuperH. Any CPU that supports
593 clock rate rounding through the clock framework can use this
594 driver. While it will make the kernel slightly larger, this is
595 harmless for CPUs that don't support rate rounding. The driver
596 will also generate a notice in the boot log before disabling
597 itself if the CPU in question is not capable of rate rounding.
1da177e4 598
cad82448 599 For details, take a look at <file:Documentation/cpu-freq>.
1da177e4
LT
600
601 If unsure, say N.
602
cad82448
PM
603endmenu
604
9f5e8eee
PM
605source "arch/sh/drivers/Kconfig"
606
cad82448 607endmenu
1da177e4 608
cad82448
PM
609menu "Kernel features"
610
91b91d01
PM
611source kernel/Kconfig.hz
612
cad82448
PM
613config KEXEC
614 bool "kexec system call (EXPERIMENTAL)"
f36b59d1 615 depends on SUPERH32 && EXPERIMENTAL && MMU
1da177e4 616 help
cad82448
PM
617 kexec is a system call that implements the ability to shutdown your
618 current kernel, and to start another kernel. It is like a reboot
1f1332f7 619 but it is independent of the system firmware. And like a reboot
cad82448
PM
620 you can start any kernel with it, not just Linux.
621
1f1332f7 622 The name comes from the similarity to the exec system call.
cad82448
PM
623
624 It is an ongoing process to be certain the hardware in a machine
625 is properly shutdown, so do not be surprised if this code does not
626 initially work for you. It may help to enable device hotplugging
627 support. As of this writing the exact hardware interface is
628 strongly in flux, so no good recommendation can be made.
629
4d5ade5b
PM
630config CRASH_DUMP
631 bool "kernel crash dumps (EXPERIMENTAL)"
d523e1ae 632 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
4d5ade5b
PM
633 help
634 Generate crash dump after being started by kexec.
635 This should be normally only set in special crash dump kernels
636 which are loaded in the main kernel with kexec-tools into
637 a specially reserved region and then later executed after
638 a crash by kdump/kexec. The crash dump kernel must be compiled
639 to a memory address not used by the main kernel using
640 MEMORY_START.
641
642 For more details see Documentation/kdump/kdump.txt
643
b7cf6ddc
MD
644config KEXEC_JUMP
645 bool "kexec jump (EXPERIMENTAL)"
646 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
647 help
648 Jump between original kernel and kexeced kernel and invoke
649 code via KEXEC
650
c4637d47
PM
651config SECCOMP
652 bool "Enable seccomp to safely compute untrusted bytecode"
653 depends on PROC_FS
c4637d47
PM
654 help
655 This kernel feature is useful for number crunching applications
656 that may need to compute untrusted bytecode during their
657 execution. By using pipes or other transports made available to
658 the process as file descriptors supporting the read/write
659 syscalls, it's possible to isolate those applications in
660 their own address space using seccomp. Once seccomp is
661 enabled via prctl, it cannot be disabled and the task is only
662 allowed to execute a few safe syscalls defined by each seccomp
663 mode.
664
665 If unsure, say N.
666
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667config SMP
668 bool "Symmetric multi-processing support"
357d5946 669 depends on SYS_SUPPORTS_SMP
490f5de5 670 select USE_GENERIC_SMP_HELPERS
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671 ---help---
672 This enables support for systems with more than one CPU. If you have
673 a system with only one CPU, like most personal computers, say N. If
674 you have a system with more than one CPU, say Y.
675
676 If you say N here, the kernel will run on single and multiprocessor
677 machines, but will use only one CPU of a multiprocessor machine. If
678 you say Y here, the kernel will run on many, but not all,
679 singleprocessor machines. On a singleprocessor machine, the kernel
680 will run faster if you say N here.
681
682 People using multiprocessor machines who say Y here should also say
683 Y to "Enhanced Real Time Clock Support", below.
684
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685 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
686 available at <http://www.tldp.org/docs.html#howto>.
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687
688 If you don't know what to do here, say N.
689
690config NR_CPUS
691 int "Maximum number of CPUs (2-32)"
692 range 2 32
693 depends on SMP
2eb2a436 694 default "4" if CPU_SUBTYPE_SHX3
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695 default "2"
696 help
697 This allows you to specify the maximum number of CPUs which this
698 kernel will support. The maximum supported value is 32 and the
699 minimum value which makes sense is 2.
700
701 This is purely to save memory - each supported CPU adds
702 approximately eight kilobytes to the kernel image.
703
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704config HOTPLUG_CPU
705 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
706 depends on SMP && HOTPLUG && EXPERIMENTAL
707 help
708 Say Y here to experiment with turning CPUs off and on. CPUs
709 can be controlled through /sys/devices/system/cpu.
710
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711source "kernel/Kconfig.preempt"
712
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713config GUSA
714 def_bool y
1efe4ce3 715 depends on !SMP && SUPERH32
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716 help
717 This enables support for gUSA (general UserSpace Atomicity).
718 This is the default implementation for both UP and non-ll/sc
719 CPUs, and is used by the libc, amongst others.
720
721 For additional information, design information can be found
722 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
723
724 This should only be disabled for special cases where alternate
725 atomicity implementations exist.
726
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727config GUSA_RB
728 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
729 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
730 help
731 Enabling this option will allow the kernel to implement some
692105b8 732 atomic operations using a software implementation of load-locked/
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733 store-conditional (LLSC). On machines which do not have hardware
734 LLSC, this should be more efficient than the other alternative of
692105b8 735 disabling interrupts around the atomic sequence.
1efe4ce3 736
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737config HW_PERF_EVENTS
738 bool "Enable hardware performance counter support for perf events"
739 depends on PERF_EVENTS && CPU_HAS_PMU
740 default y
741 help
742 Enable hardware performance counter support for perf events. If
743 disabled, perf events will use software events only.
744
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745source "drivers/sh/Kconfig"
746
cad82448 747endmenu
1da177e4 748
cad82448 749menu "Boot options"
1da177e4 750
cad82448 751config ZERO_PAGE_OFFSET
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752 hex
753 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
754 SH_7751_SOLUTION_ENGINE
755 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
7a847f81 756 default "0x00002000" if PAGE_SIZE_8KB
cad82448 757 default "0x00001000"
1da177e4 758 help
cad82448 759 This sets the default offset of zero page.
1da177e4 760
cad82448 761config BOOT_LINK_OFFSET
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762 hex
763 default "0x00210000" if SH_SHMIN
a2e76c80 764 default "0x00400000" if SH_CAYMAN
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765 default "0x00810000" if SH_7780_SOLUTION_ENGINE
766 default "0x009e0000" if SH_TITAN
767 default "0x01800000" if SH_SDK7780
768 default "0x02000000" if SH_EDOSK7760
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769 default "0x00800000"
770 help
771 This option allows you to set the link address offset of the zImage.
772 This can be useful if you are on a board which has a small amount of
773 memory.
1da177e4 774
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775config ENTRY_OFFSET
776 hex
777 default "0x00001000" if PAGE_SIZE_4KB
778 default "0x00002000" if PAGE_SIZE_8KB
779 default "0x00004000" if PAGE_SIZE_16KB
780 default "0x00010000" if PAGE_SIZE_64KB
781 default "0x00000000"
782
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783config ROMIMAGE_MMCIF
784 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
785 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
786 help
787 Say Y here to include experimental MMCIF loading code in
788 romImage. With this enabled it is possible to write the romImage
789 kernel image to an MMC card and boot the kernel straight from
790 the reset vector. At reset the processor Mask ROM will load the
791 first part of the romImage which in turn loads the rest the kernel
792 image to RAM using the MMCIF hardware block.
793
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794choice
795 prompt "Kernel command line"
796 optional
797 default CMDLINE_OVERWRITE
798 help
799 Setting this option allows the kernel command line arguments
800 to be set.
801
802config CMDLINE_OVERWRITE
803 bool "Overwrite bootloader kernel arguments"
804 help
805 Given string will overwrite any arguments passed in by
806 a bootloader.
807
808config CMDLINE_EXTEND
809 bool "Extend bootloader kernel arguments"
810 help
811 Given string will be concatenated with arguments passed in
812 by a bootloader.
813
814endchoice
1da177e4 815
cad82448 816config CMDLINE
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817 string "Kernel command line arguments string"
818 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
cad82448 819 default "console=ttySC1,115200"
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820
821endmenu
822
cad82448 823menu "Bus options"
1da177e4 824
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825config SUPERHYWAY
826 tristate "SuperHyway Bus support"
827 depends on CPU_SUBTYPE_SH4_202
1da177e4 828
17be2d2b 829config MAPLE
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830 bool "Maple Bus support"
831 depends on SH_DREAMCAST
832 help
833 The Maple Bus is SEGA's serial communication bus for peripherals
834 on the Dreamcast. Without this bus support you won't be able to
835 get your Dreamcast keyboard etc to work, so most users
836 probably want to say 'Y' here, unless you are only using the
837 Dreamcast with a serial line terminal or a remote network
838 connection.
17be2d2b 839
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840config PCI
841 bool "PCI support"
842 depends on SYS_SUPPORTS_PCI
320e68da 843 select PCI_DOMAINS
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844 help
845 Find out whether you have a PCI motherboard. PCI is the name of a
846 bus system, i.e. the way the CPU talks to the other stuff inside
847 your box. If you have PCI, say Y, otherwise N.
1da177e4 848
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849config PCI_DOMAINS
850 bool
851
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852source "drivers/pci/pcie/Kconfig"
853
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854source "drivers/pci/Kconfig"
855
856source "drivers/pcmcia/Kconfig"
857
858source "drivers/pci/hotplug/Kconfig"
859
860endmenu
861
862menu "Executable file formats"
863
864source "fs/Kconfig.binfmt"
865
866endmenu
867
3aa770e7 868menu "Power management options (EXPERIMENTAL)"
af998a9a 869depends on EXPERIMENTAL
f4cb5700 870
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871source "kernel/power/Kconfig"
872
873source "drivers/cpuidle/Kconfig"
3aa770e7 874
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875endmenu
876
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877source "net/Kconfig"
878
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879source "drivers/Kconfig"
880
881source "fs/Kconfig"
882
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883source "arch/sh/Kconfig.debug"
884
885source "security/Kconfig"
886
887source "crypto/Kconfig"
888
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889menuconfig VIRTUALIZATION
890 bool "Virtualization"
891 default n
892 ---help---
893 Say Y here to get to see options for using your Linux host to run other
894 operating systems inside virtual machines (guests).
895 This option alone does not add any kernel code.
896
897 If you say N, all options in this submenu will be skipped and disabled.
898
899if VIRTUALIZATION
900
901source drivers/virtio/Kconfig
902
903endif # VIRTUALIZATION
904
1da177e4 905source "lib/Kconfig"