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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
eaaaeef3 27 select HAVE_REGS_AND_STACK_ACCESS_API
57b81330
PM
28 select HAVE_GENERIC_HARDIRQS
29 select HAVE_SPARSE_IRQ
6eac1af0 30 select RTC_LIB
f01789c6 31 select GENERIC_ATOMIC64
1e5cefd0 32 select GENERIC_HARDIRQS_NO_DEPRECATED
1da177e4
LT
33 help
34 The SuperH is a RISC processor targeted for use in embedded systems
35 and consumer electronics; it was also used in the Sega Dreamcast
36 gaming console. The SuperH port has a home page at
37 <http://www.linux-sh.org/>.
38
39d28a2d 39config SUPERH32
3cc000b5 40 def_bool ARCH = "sh"
d39f5450
CS
41 select HAVE_KPROBES
42 select HAVE_KRETPROBES
6d63e73d 43 select HAVE_IOREMAP_PROT if MMU && !X2TLB
694f94f2 44 select HAVE_FUNCTION_TRACER
fad57feb
MF
45 select HAVE_FTRACE_MCOUNT_RECORD
46 select HAVE_DYNAMIC_FTRACE
c1340c05 47 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
e4b053d9 48 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
327933f5 49 select HAVE_FUNCTION_GRAPH_TRACER
ab6e570b 50 select HAVE_ARCH_KGDB
6fbfe8d7 51 select HAVE_HW_BREAKPOINT
0102752e 52 select HAVE_MIXED_BREAKPOINTS_REGS
e583d6b3 53 select PERF_EVENTS
8dafc346 54 select ARCH_HIBERNATION_POSSIBLE if MMU
57b81330 55 select SPARSE_IRQ
ea0e1a9a
PM
56
57config SUPERH64
3cc000b5 58 def_bool ARCH = "sh64"
39d28a2d 59
f42b7e3d
PM
60config ARCH_DEFCONFIG
61 string
62 default "arch/sh/configs/shx3_defconfig" if SUPERH32
63 default "arch/sh/configs/cayman_defconfig" if SUPERH64
64
1da177e4 65config RWSEM_GENERIC_SPINLOCK
d7ef4fb3 66 def_bool y
1da177e4
LT
67
68config RWSEM_XCHGADD_ALGORITHM
69 bool
70
fa691511
PM
71config GENERIC_BUG
72 def_bool y
a82d53ec 73 depends on BUG && SUPERH32
fa691511 74
3767f3f1
PM
75config GENERIC_CSUM
76 def_bool y
77 depends on SUPERH64
78
e2268c71 79config GENERIC_FIND_NEXT_BIT
d7ef4fb3 80 def_bool y
e2268c71
AM
81
82config GENERIC_HWEIGHT
d7ef4fb3 83 def_bool y
e2268c71 84
2eb2a436
PM
85config IRQ_PER_CPU
86 def_bool y
87
2967dab1
MD
88config GENERIC_GPIO
89 def_bool n
90
1da177e4 91config GENERIC_CALIBRATE_DELAY
cf204fa7 92 bool
1da177e4 93
cad82448
PM
94config GENERIC_IOMAP
95 bool
96
57be2b48 97config GENERIC_CLOCKEVENTS
938edae1 98 def_bool y
57be2b48 99
8c24594d
PM
100config GENERIC_CLOCKEVENTS_BROADCAST
101 bool
102
6d134b9e
PM
103config GENERIC_CMOS_UPDATE
104 def_bool y
105 depends on SH_SH03 || SH_DREAMCAST
106
bdcab87b
PM
107config GENERIC_LOCKBREAK
108 def_bool y
109 depends on SMP && PREEMPT
110
357d5946
PM
111config SYS_SUPPORTS_PM
112 bool
af998a9a
MD
113 depends on !SMP
114
115config ARCH_SUSPEND_POSSIBLE
116 def_bool n
117
118config ARCH_HIBERNATION_POSSIBLE
119 def_bool n
357d5946 120
0a9b0db1
PM
121config SYS_SUPPORTS_APM_EMULATION
122 bool
af998a9a 123 select ARCH_SUSPEND_POSSIBLE
357d5946 124
ffb4a73d
PM
125config SYS_SUPPORTS_HUGETLBFS
126 bool
127
357d5946
PM
128config SYS_SUPPORTS_SMP
129 bool
130
131config SYS_SUPPORTS_NUMA
132 bool
133
134config SYS_SUPPORTS_PCI
135 bool
0a9b0db1 136
f5ad881b
PM
137config SYS_SUPPORTS_CMT
138 bool
139
d5ed4c2e
MD
140config SYS_SUPPORTS_MTU2
141 bool
142
9570ef20
MD
143config SYS_SUPPORTS_TMU
144 bool
145
afbfb52e 146config STACKTRACE_SUPPORT
d7ef4fb3 147 def_bool y
afbfb52e
PM
148
149config LOCKDEP_SUPPORT
d7ef4fb3 150 def_bool y
afbfb52e 151
5a89f1ad
PM
152config HAVE_LATENCYTOP_SUPPORT
153 def_bool y
5a89f1ad 154
f0d1b0b3 155config ARCH_HAS_ILOG2_U32
d7ef4fb3 156 def_bool n
f0d1b0b3
DH
157
158config ARCH_HAS_ILOG2_U64
d7ef4fb3 159 def_bool n
f0d1b0b3 160
e257ad06
PM
161config ARCH_NO_VIRT_TO_BUS
162 def_bool y
163
e869a90e
PM
164config ARCH_HAS_DEFAULT_IDLE
165 def_bool y
166
2e046b94
PM
167config ARCH_HAS_CPU_IDLE_WAIT
168 def_bool y
169
86e4dd5a
PM
170config NO_IOPORT
171 bool
172
e7cc9a73
MD
173config IO_TRAPPED
174 bool
175
01be5d63
PM
176config DMA_COHERENT
177 bool
178
179config DMA_NONCOHERENT
180 def_bool !DMA_COHERENT
181
5cabbb62
FT
182config NEED_DMA_MAP_STATE
183 def_bool DMA_NONCOHERENT
184
18e98307
FT
185config NEED_SG_DMA_LENGTH
186 def_bool y
187
1da177e4
LT
188source "init/Kconfig"
189
dc52ddc0
MH
190source "kernel/Kconfig.freezer"
191
1da177e4
LT
192menu "System type"
193
b5f42db0
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194#
195# Processor families
196#
197config CPU_SH2
198 bool
199
200config CPU_SH2A
201 bool
202 select CPU_SH2
203
204config CPU_SH3
205 bool
206 select CPU_HAS_INTEVT
207 select CPU_HAS_SR_RB
4fa48e17 208 select SYS_SUPPORTS_TMU
b5f42db0
PM
209
210config CPU_SH4
211 bool
212 select CPU_HAS_INTEVT
213 select CPU_HAS_SR_RB
b5f42db0 214 select CPU_HAS_FPU if !CPU_SH4AL_DSP
4fa48e17 215 select SYS_SUPPORTS_TMU
ffb4a73d 216 select SYS_SUPPORTS_HUGETLBFS if MMU
b5f42db0
PM
217
218config CPU_SH4A
219 bool
220 select CPU_SH4
221
222config CPU_SH4AL_DSP
223 bool
224 select CPU_SH4A
225 select CPU_HAS_DSP
226
ea0e1a9a
PM
227config CPU_SH5
228 bool
229 select CPU_HAS_FPU
add47067 230 select SYS_SUPPORTS_TMU
ffb4a73d 231 select SYS_SUPPORTS_HUGETLBFS if MMU
ea0e1a9a 232
b5f42db0
PM
233config CPU_SHX2
234 bool
235
236config CPU_SHX3
237 bool
01be5d63 238 select DMA_COHERENT
4b478ee2
PM
239 select SYS_SUPPORTS_SMP
240 select SYS_SUPPORTS_NUMA
b5f42db0 241
dc65a977
PM
242config ARCH_SHMOBILE
243 bool
77594912 244 select ARCH_SUSPEND_POSSIBLE
ac2c596b
MD
245 select PM
246 select PM_RUNTIME
dc65a977 247
86c8c047
MF
248config CPU_HAS_PMU
249 depends on CPU_SH4 || CPU_SH4A
250 default y
251 bool
252
3cc000b5
PM
253if SUPERH32
254
b5f42db0
PM
255choice
256 prompt "Processor sub-type selection"
257
258#
259# Processor subtypes
260#
261
262# SH-2 Processor Support
263
264config CPU_SUBTYPE_SH7619
265 bool "Support SH7619 processor"
266 select CPU_SH2
f5ad881b 267 select SYS_SUPPORTS_CMT
b5f42db0
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268
269# SH-2A Processor Support
270
2825999e
PG
271config CPU_SUBTYPE_SH7201
272 bool "Support SH7201 processor"
273 select CPU_SH2A
274 select CPU_HAS_FPU
da107c6e 275 select SYS_SUPPORTS_MTU2
2825999e 276
6d01f510
PM
277config CPU_SUBTYPE_SH7203
278 bool "Support SH7203 processor"
279 select CPU_SH2A
74d99a5e 280 select CPU_HAS_FPU
f5ad881b 281 select SYS_SUPPORTS_CMT
da107c6e 282 select SYS_SUPPORTS_MTU2
6d01f510 283
b5f42db0
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284config CPU_SUBTYPE_SH7206
285 bool "Support SH7206 processor"
286 select CPU_SH2A
f5ad881b 287 select SYS_SUPPORTS_CMT
da107c6e 288 select SYS_SUPPORTS_MTU2
b5f42db0 289
a8f67f4b
PM
290config CPU_SUBTYPE_SH7263
291 bool "Support SH7263 processor"
292 select CPU_SH2A
74d99a5e 293 select CPU_HAS_FPU
f5ad881b 294 select SYS_SUPPORTS_CMT
da107c6e 295 select SYS_SUPPORTS_MTU2
a8f67f4b 296
2ad69908
PM
297config CPU_SUBTYPE_MXG
298 bool "Support MX-G processor"
299 select CPU_SH2A
da107c6e 300 select SYS_SUPPORTS_MTU2
2ad69908
PM
301 help
302 Select MX-G if running on an R8A03022BG part.
303
b5f42db0
PM
304# SH-3 Processor Support
305
306config CPU_SUBTYPE_SH7705
307 bool "Support SH7705 processor"
308 select CPU_SH3
309
310config CPU_SUBTYPE_SH7706
311 bool "Support SH7706 processor"
312 select CPU_SH3
313 help
314 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
315
316config CPU_SUBTYPE_SH7707
317 bool "Support SH7707 processor"
318 select CPU_SH3
319 help
320 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
321
322config CPU_SUBTYPE_SH7708
323 bool "Support SH7708 processor"
324 select CPU_SH3
325 help
326 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
327 if you have a 100 Mhz SH-3 HD6417708R CPU.
328
329config CPU_SUBTYPE_SH7709
330 bool "Support SH7709 processor"
331 select CPU_SH3
332 help
333 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
334
335config CPU_SUBTYPE_SH7710
336 bool "Support SH7710 processor"
337 select CPU_SH3
338 select CPU_HAS_DSP
339 help
340 Select SH7710 if you have a SH3-DSP SH7710 CPU.
341
342config CPU_SUBTYPE_SH7712
343 bool "Support SH7712 processor"
344 select CPU_SH3
345 select CPU_HAS_DSP
346 help
347 Select SH7712 if you have a SH3-DSP SH7712 CPU.
348
349config CPU_SUBTYPE_SH7720
350 bool "Support SH7720 processor"
351 select CPU_SH3
352 select CPU_HAS_DSP
2b23a882 353 select SYS_SUPPORTS_CMT
b5f42db0
PM
354 help
355 Select SH7720 if you have a SH3-DSP SH7720 CPU.
356
31a49c4b
YS
357config CPU_SUBTYPE_SH7721
358 bool "Support SH7721 processor"
359 select CPU_SH3
360 select CPU_HAS_DSP
2b23a882 361 select SYS_SUPPORTS_CMT
31a49c4b
YS
362 help
363 Select SH7721 if you have a SH3-DSP SH7721 CPU.
364
b5f42db0
PM
365# SH-4 Processor Support
366
367config CPU_SUBTYPE_SH7750
368 bool "Support SH7750 processor"
369 select CPU_SH4
370 help
371 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
372
373config CPU_SUBTYPE_SH7091
374 bool "Support SH7091 processor"
375 select CPU_SH4
376 help
377 Select SH7091 if you have an SH-4 based Sega device (such as
378 the Dreamcast, Naomi, and Naomi 2).
379
380config CPU_SUBTYPE_SH7750R
381 bool "Support SH7750R processor"
382 select CPU_SH4
383
384config CPU_SUBTYPE_SH7750S
385 bool "Support SH7750S processor"
386 select CPU_SH4
387
388config CPU_SUBTYPE_SH7751
389 bool "Support SH7751 processor"
390 select CPU_SH4
391 help
392 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
393 or if you have a HD6417751R CPU.
394
395config CPU_SUBTYPE_SH7751R
396 bool "Support SH7751R processor"
397 select CPU_SH4
398
399config CPU_SUBTYPE_SH7760
400 bool "Support SH7760 processor"
401 select CPU_SH4
402
403config CPU_SUBTYPE_SH4_202
404 bool "Support SH4-202 processor"
405 select CPU_SH4
406
407# SH-4A Processor Support
408
178dd0cd
PM
409config CPU_SUBTYPE_SH7723
410 bool "Support SH7723 processor"
411 select CPU_SH4A
412 select CPU_SHX2
dc65a977 413 select ARCH_SHMOBILE
178dd0cd 414 select ARCH_SPARSEMEM_ENABLE
f5ad881b 415 select SYS_SUPPORTS_CMT
178dd0cd
PM
416 help
417 Select SH7723 if you have an SH-MobileR2 CPU.
418
0207a2ef
KM
419config CPU_SUBTYPE_SH7724
420 bool "Support SH7724 processor"
421 select CPU_SH4A
422 select CPU_SHX2
59fe700d 423 select ARCH_SHMOBILE
0207a2ef
KM
424 select ARCH_SPARSEMEM_ENABLE
425 select SYS_SUPPORTS_CMT
426 help
427 Select SH7724 if you have an SH-MobileR2R CPU.
428
c01f0f1a
YS
429config CPU_SUBTYPE_SH7757
430 bool "Support SH7757 processor"
431 select CPU_SH4A
432 select CPU_SHX2
433 help
434 Select SH7757 if you have a SH4A SH7757 CPU.
435
7d740a06
YS
436config CPU_SUBTYPE_SH7763
437 bool "Support SH7763 processor"
438 select CPU_SH4A
439 help
440 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
441
b5f42db0
PM
442config CPU_SUBTYPE_SH7770
443 bool "Support SH7770 processor"
444 select CPU_SH4A
445
446config CPU_SUBTYPE_SH7780
447 bool "Support SH7780 processor"
448 select CPU_SH4A
449
450config CPU_SUBTYPE_SH7785
451 bool "Support SH7785 processor"
452 select CPU_SH4A
453 select CPU_SHX2
55ba99eb
KM
454 select ARCH_SPARSEMEM_ENABLE
455 select SYS_SUPPORTS_NUMA
456
457config CPU_SUBTYPE_SH7786
458 bool "Support SH7786 processor"
459 select CPU_SH4A
37042fbd 460 select CPU_SHX3
8263a67e 461 select CPU_HAS_PTEAEX
2eb2a436 462 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
b5f42db0
PM
463
464config CPU_SUBTYPE_SHX3
465 bool "Support SH-X3 processor"
466 select CPU_SH4A
467 select CPU_SHX3
5840263e 468 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
742759ea 469 select ARCH_REQUIRE_GPIOLIB
b5f42db0
PM
470
471# SH4AL-DSP Processor Support
472
473config CPU_SUBTYPE_SH7343
474 bool "Support SH7343 processor"
475 select CPU_SH4AL_DSP
dc65a977 476 select ARCH_SHMOBILE
f5ad881b 477 select SYS_SUPPORTS_CMT
b5f42db0
PM
478
479config CPU_SUBTYPE_SH7722
480 bool "Support SH7722 processor"
481 select CPU_SH4AL_DSP
482 select CPU_SHX2
dc65a977 483 select ARCH_SHMOBILE
b5f42db0
PM
484 select ARCH_SPARSEMEM_ENABLE
485 select SYS_SUPPORTS_NUMA
f5ad881b 486 select SYS_SUPPORTS_CMT
9109a30e
MD
487
488config CPU_SUBTYPE_SH7366
489 bool "Support SH7366 processor"
490 select CPU_SH4AL_DSP
491 select CPU_SHX2
dc65a977 492 select ARCH_SHMOBILE
9109a30e
MD
493 select ARCH_SPARSEMEM_ENABLE
494 select SYS_SUPPORTS_NUMA
f5ad881b 495 select SYS_SUPPORTS_CMT
b5f42db0 496
3cc000b5
PM
497endchoice
498
499endif
500
501if SUPERH64
502
503choice
504 prompt "Processor sub-type selection"
505
ea0e1a9a
PM
506# SH-5 Processor Support
507
508config CPU_SUBTYPE_SH5_101
509 bool "Support SH5-101 processor"
510 select CPU_SH5
511
512config CPU_SUBTYPE_SH5_103
513 bool "Support SH5-103 processor"
8ef97dd7 514 select CPU_SH5
ea0e1a9a 515
b5f42db0
PM
516endchoice
517
3cc000b5
PM
518endif
519
f3d22298 520source "arch/sh/mm/Kconfig"
939a24a6 521
4690bdc7 522source "arch/sh/Kconfig.cpu"
f3d22298 523
939a24a6 524source "arch/sh/boards/Kconfig"
32351a28 525
32351a28
PM
526menu "Timer and clock configuration"
527
9570ef20
MD
528config SH_TIMER_TMU
529 bool "TMU timer driver"
f19900b2 530 depends on SYS_SUPPORTS_TMU
9570ef20 531 default y
9570ef20
MD
532 help
533 This enables the build of the TMU timer driver.
534
f5ad881b 535config SH_TIMER_CMT
f425752f
MD
536 bool "CMT timer driver"
537 depends on SYS_SUPPORTS_CMT
538 default y
f425752f
MD
539 help
540 This enables build of the CMT timer driver.
f5ad881b 541
d5ed4c2e
MD
542config SH_TIMER_MTU2
543 bool "MTU2 timer driver"
3280c886 544 depends on SYS_SUPPORTS_MTU2
d5ed4c2e 545 default y
d5ed4c2e
MD
546 help
547 This enables build of the MTU2 timer driver.
548
cad82448
PM
549config SH_PCLK_FREQ
550 int "Peripheral clock frequency (in Hz)"
8152a74b 551 depends on SH_CLK_CPG_LEGACY
9d4436a6 552 default "31250000" if CPU_SUBTYPE_SH7619
8152a74b
PM
553 default "33333333" if CPU_SUBTYPE_SH7770 || \
554 CPU_SUBTYPE_SH7760 || \
555 CPU_SUBTYPE_SH7705 || \
556 CPU_SUBTYPE_SH7203 || \
557 CPU_SUBTYPE_SH7206 || \
558 CPU_SUBTYPE_SH7263 || \
43a1839c 559 CPU_SUBTYPE_MXG
05627486 560 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
cad82448 561 default "66000000" if CPU_SUBTYPE_SH4_202
05627486 562 default "50000000"
1da177e4 563 help
cad82448
PM
564 This option is used to specify the peripheral clock frequency.
565 This is necessary for determining the reference clock value on
566 platforms lacking an RTC.
1da177e4 567
36aa1e32
PM
568config SH_CLK_CPG
569 def_bool y
570
253b0887 571config SH_CLK_CPG_LEGACY
36aa1e32 572 depends on SH_CLK_CPG
43a1839c 573 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
5924ad0d 574 !CPU_SHX3 && !CPU_SUBTYPE_SH7757
253b0887 575
9d4436a6
YS
576config SH_CLK_MD
577 int "CPU Mode Pin Setting"
6d01f510 578 depends on CPU_SH2
357d5946
PM
579 default 6 if CPU_SUBTYPE_SH7206
580 default 5 if CPU_SUBTYPE_SH7619
581 default 0
9d4436a6 582 help
11cbb70e 583 MD2 - MD0 pin setting.
9d4436a6 584
57be2b48
PM
585source "kernel/time/Kconfig"
586
32351a28
PM
587endmenu
588
cad82448
PM
589menu "CPU Frequency scaling"
590
591source "drivers/cpufreq/Kconfig"
1da177e4 592
cad82448
PM
593config SH_CPU_FREQ
594 tristate "SuperH CPU Frequency driver"
cb5ec75b 595 depends on CPU_FREQ
cad82448 596 select CPU_FREQ_TABLE
1da177e4 597 help
8a655053
PM
598 This adds the cpufreq driver for SuperH. Any CPU that supports
599 clock rate rounding through the clock framework can use this
600 driver. While it will make the kernel slightly larger, this is
601 harmless for CPUs that don't support rate rounding. The driver
602 will also generate a notice in the boot log before disabling
603 itself if the CPU in question is not capable of rate rounding.
1da177e4 604
cad82448 605 For details, take a look at <file:Documentation/cpu-freq>.
1da177e4
LT
606
607 If unsure, say N.
608
cad82448
PM
609endmenu
610
9f5e8eee
PM
611source "arch/sh/drivers/Kconfig"
612
cad82448 613endmenu
1da177e4 614
cad82448
PM
615menu "Kernel features"
616
91b91d01
PM
617source kernel/Kconfig.hz
618
cad82448
PM
619config KEXEC
620 bool "kexec system call (EXPERIMENTAL)"
f36b59d1 621 depends on SUPERH32 && EXPERIMENTAL && MMU
1da177e4 622 help
cad82448
PM
623 kexec is a system call that implements the ability to shutdown your
624 current kernel, and to start another kernel. It is like a reboot
1f1332f7 625 but it is independent of the system firmware. And like a reboot
cad82448
PM
626 you can start any kernel with it, not just Linux.
627
1f1332f7 628 The name comes from the similarity to the exec system call.
cad82448
PM
629
630 It is an ongoing process to be certain the hardware in a machine
631 is properly shutdown, so do not be surprised if this code does not
632 initially work for you. It may help to enable device hotplugging
633 support. As of this writing the exact hardware interface is
634 strongly in flux, so no good recommendation can be made.
635
4d5ade5b
PM
636config CRASH_DUMP
637 bool "kernel crash dumps (EXPERIMENTAL)"
d523e1ae 638 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
4d5ade5b
PM
639 help
640 Generate crash dump after being started by kexec.
641 This should be normally only set in special crash dump kernels
642 which are loaded in the main kernel with kexec-tools into
643 a specially reserved region and then later executed after
644 a crash by kdump/kexec. The crash dump kernel must be compiled
645 to a memory address not used by the main kernel using
646 MEMORY_START.
647
648 For more details see Documentation/kdump/kdump.txt
649
b7cf6ddc
MD
650config KEXEC_JUMP
651 bool "kexec jump (EXPERIMENTAL)"
652 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
653 help
654 Jump between original kernel and kexeced kernel and invoke
655 code via KEXEC
656
c4637d47
PM
657config SECCOMP
658 bool "Enable seccomp to safely compute untrusted bytecode"
659 depends on PROC_FS
c4637d47
PM
660 help
661 This kernel feature is useful for number crunching applications
662 that may need to compute untrusted bytecode during their
663 execution. By using pipes or other transports made available to
664 the process as file descriptors supporting the read/write
665 syscalls, it's possible to isolate those applications in
666 their own address space using seccomp. Once seccomp is
667 enabled via prctl, it cannot be disabled and the task is only
668 allowed to execute a few safe syscalls defined by each seccomp
669 mode.
670
671 If unsure, say N.
672
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673config SMP
674 bool "Symmetric multi-processing support"
357d5946 675 depends on SYS_SUPPORTS_SMP
490f5de5 676 select USE_GENERIC_SMP_HELPERS
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677 ---help---
678 This enables support for systems with more than one CPU. If you have
679 a system with only one CPU, like most personal computers, say N. If
680 you have a system with more than one CPU, say Y.
681
682 If you say N here, the kernel will run on single and multiprocessor
683 machines, but will use only one CPU of a multiprocessor machine. If
684 you say Y here, the kernel will run on many, but not all,
685 singleprocessor machines. On a singleprocessor machine, the kernel
686 will run faster if you say N here.
687
688 People using multiprocessor machines who say Y here should also say
689 Y to "Enhanced Real Time Clock Support", below.
690
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691 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
692 available at <http://www.tldp.org/docs.html#howto>.
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693
694 If you don't know what to do here, say N.
695
696config NR_CPUS
697 int "Maximum number of CPUs (2-32)"
698 range 2 32
699 depends on SMP
2eb2a436 700 default "4" if CPU_SUBTYPE_SHX3
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701 default "2"
702 help
703 This allows you to specify the maximum number of CPUs which this
704 kernel will support. The maximum supported value is 32 and the
705 minimum value which makes sense is 2.
706
707 This is purely to save memory - each supported CPU adds
708 approximately eight kilobytes to the kernel image.
709
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710config HOTPLUG_CPU
711 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
712 depends on SMP && HOTPLUG && EXPERIMENTAL
713 help
714 Say Y here to experiment with turning CPUs off and on. CPUs
715 can be controlled through /sys/devices/system/cpu.
716
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717source "kernel/Kconfig.preempt"
718
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719config GUSA
720 def_bool y
1efe4ce3 721 depends on !SMP && SUPERH32
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722 help
723 This enables support for gUSA (general UserSpace Atomicity).
724 This is the default implementation for both UP and non-ll/sc
725 CPUs, and is used by the libc, amongst others.
726
727 For additional information, design information can be found
728 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
729
730 This should only be disabled for special cases where alternate
731 atomicity implementations exist.
732
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733config GUSA_RB
734 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
735 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
736 help
737 Enabling this option will allow the kernel to implement some
692105b8 738 atomic operations using a software implementation of load-locked/
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739 store-conditional (LLSC). On machines which do not have hardware
740 LLSC, this should be more efficient than the other alternative of
692105b8 741 disabling interrupts around the atomic sequence.
1efe4ce3 742
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743config HW_PERF_EVENTS
744 bool "Enable hardware performance counter support for perf events"
745 depends on PERF_EVENTS && CPU_HAS_PMU
746 default y
747 help
748 Enable hardware performance counter support for perf events. If
749 disabled, perf events will use software events only.
750
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751source "drivers/sh/Kconfig"
752
cad82448 753endmenu
1da177e4 754
cad82448 755menu "Boot options"
1da177e4 756
cad82448 757config ZERO_PAGE_OFFSET
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758 hex
759 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
760 SH_7751_SOLUTION_ENGINE
761 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
7a847f81 762 default "0x00002000" if PAGE_SIZE_8KB
cad82448 763 default "0x00001000"
1da177e4 764 help
cad82448 765 This sets the default offset of zero page.
1da177e4 766
cad82448 767config BOOT_LINK_OFFSET
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768 hex
769 default "0x00210000" if SH_SHMIN
a2e76c80 770 default "0x00400000" if SH_CAYMAN
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771 default "0x00810000" if SH_7780_SOLUTION_ENGINE
772 default "0x009e0000" if SH_TITAN
773 default "0x01800000" if SH_SDK7780
774 default "0x02000000" if SH_EDOSK7760
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775 default "0x00800000"
776 help
777 This option allows you to set the link address offset of the zImage.
778 This can be useful if you are on a board which has a small amount of
779 memory.
1da177e4 780
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781config ENTRY_OFFSET
782 hex
783 default "0x00001000" if PAGE_SIZE_4KB
784 default "0x00002000" if PAGE_SIZE_8KB
785 default "0x00004000" if PAGE_SIZE_16KB
786 default "0x00010000" if PAGE_SIZE_64KB
787 default "0x00000000"
788
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789config ROMIMAGE_MMCIF
790 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
791 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
792 help
793 Say Y here to include experimental MMCIF loading code in
794 romImage. With this enabled it is possible to write the romImage
795 kernel image to an MMC card and boot the kernel straight from
796 the reset vector. At reset the processor Mask ROM will load the
797 first part of the romImage which in turn loads the rest the kernel
798 image to RAM using the MMCIF hardware block.
799
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800choice
801 prompt "Kernel command line"
802 optional
803 default CMDLINE_OVERWRITE
804 help
805 Setting this option allows the kernel command line arguments
806 to be set.
807
808config CMDLINE_OVERWRITE
809 bool "Overwrite bootloader kernel arguments"
810 help
811 Given string will overwrite any arguments passed in by
812 a bootloader.
813
814config CMDLINE_EXTEND
815 bool "Extend bootloader kernel arguments"
816 help
817 Given string will be concatenated with arguments passed in
818 by a bootloader.
819
820endchoice
1da177e4 821
cad82448 822config CMDLINE
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823 string "Kernel command line arguments string"
824 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
cad82448 825 default "console=ttySC1,115200"
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826
827endmenu
828
cad82448 829menu "Bus options"
1da177e4 830
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831config SUPERHYWAY
832 tristate "SuperHyway Bus support"
833 depends on CPU_SUBTYPE_SH4_202
1da177e4 834
17be2d2b 835config MAPLE
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836 bool "Maple Bus support"
837 depends on SH_DREAMCAST
838 help
839 The Maple Bus is SEGA's serial communication bus for peripherals
840 on the Dreamcast. Without this bus support you won't be able to
841 get your Dreamcast keyboard etc to work, so most users
842 probably want to say 'Y' here, unless you are only using the
843 Dreamcast with a serial line terminal or a remote network
844 connection.
17be2d2b 845
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846config PCI
847 bool "PCI support"
848 depends on SYS_SUPPORTS_PCI
320e68da 849 select PCI_DOMAINS
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850 help
851 Find out whether you have a PCI motherboard. PCI is the name of a
852 bus system, i.e. the way the CPU talks to the other stuff inside
853 your box. If you have PCI, say Y, otherwise N.
1da177e4 854
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855config PCI_DOMAINS
856 bool
857
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858source "drivers/pci/pcie/Kconfig"
859
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860source "drivers/pci/Kconfig"
861
862source "drivers/pcmcia/Kconfig"
863
864source "drivers/pci/hotplug/Kconfig"
865
866endmenu
867
868menu "Executable file formats"
869
870source "fs/Kconfig.binfmt"
871
872endmenu
873
3aa770e7 874menu "Power management options (EXPERIMENTAL)"
af998a9a 875depends on EXPERIMENTAL
f4cb5700 876
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877source "kernel/power/Kconfig"
878
879source "drivers/cpuidle/Kconfig"
3aa770e7 880
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881endmenu
882
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883source "net/Kconfig"
884
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885source "drivers/Kconfig"
886
887source "fs/Kconfig"
888
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889source "arch/sh/Kconfig.debug"
890
891source "security/Kconfig"
892
893source "crypto/Kconfig"
894
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895menuconfig VIRTUALIZATION
896 bool "Virtualization"
897 default n
898 ---help---
899 Say Y here to get to see options for using your Linux host to run other
900 operating systems inside virtual machines (guests).
901 This option alone does not add any kernel code.
902
903 If you say N, all options in this submenu will be skipped and disabled.
904
905if VIRTUALIZATION
906
907source drivers/virtio/Kconfig
908
909endif # VIRTUALIZATION
910
1da177e4 911source "lib/Kconfig"