Kconfig 20.7 KB
Newer Older
1
# SPDX-License-Identifier: GPL-2.0
Linus Torvalds's avatar
Linus Torvalds committed
2
config SUPERH
3
	def_bool y
4
	select ARCH_HAS_PTE_SPECIAL
5
	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
6
	select ARCH_MIGHT_HAVE_PC_PARPORT
7
	select ARCH_NO_COHERENT_DMA_MMAP if !MMU
8
	select HAVE_PATA_PLATFORM
9
	select CLKDEV_LOOKUP
10
	select DMA_DIRECT_OPS
11
	select HAVE_IDE if HAS_IOPORT_MAP
Tejun Heo's avatar
Tejun Heo committed
12
	select HAVE_MEMBLOCK_NODE_MAP
Paul Mundt's avatar
Paul Mundt committed
13
	select ARCH_DISCARD_MEMBLOCK
Mathieu Desnoyers's avatar
Mathieu Desnoyers committed
14
	select HAVE_OPROFILE
15
	select HAVE_GENERIC_DMA_COHERENT
16
	select HAVE_ARCH_TRACEHOOK
17
	select HAVE_PERF_EVENTS
18
	select HAVE_DEBUG_BUGVERBOSE
19
	select ARCH_HAVE_CUSTOM_GPIO_H
20
	select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
21
	select ARCH_HAS_GCOV_PROFILE_ALL
22
	select PERF_USE_VMALLOC
23
	select HAVE_DEBUG_KMEMLEAK
24
	select HAVE_KERNEL_GZIP
25
	select CPU_NO_EFFICIENT_FFS
Paul Mundt's avatar
Paul Mundt committed
26
27
	select HAVE_KERNEL_BZIP2
	select HAVE_KERNEL_LZMA
Paul Mundt's avatar
Paul Mundt committed
28
	select HAVE_KERNEL_XZ
29
	select HAVE_KERNEL_LZO
30
	select HAVE_UID16
31
	select ARCH_WANT_IPC_PARSE_VERSION
32
	select HAVE_SYSCALL_TRACEPOINTS
33
	select HAVE_REGS_AND_STACK_ACCESS_API
34
	select MAY_HAVE_SPARSE_IRQ
Paul Mundt's avatar
Paul Mundt committed
35
	select IRQ_FORCED_THREADING
36
	select RTC_LIB
37
	select GENERIC_ATOMIC64
38
	select GENERIC_IRQ_SHOW
39
	select GENERIC_SMP_IDLE_THREAD
Thomas Gleixner's avatar
Thomas Gleixner committed
40
	select GENERIC_IDLE_POLL_SETUP
41
42
	select GENERIC_CLOCKEVENTS
	select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
43
	select GENERIC_PCI_IOMAP if PCI
44
	select GENERIC_SCHED_CLOCK
45
	select GENERIC_STRNCPY_FROM_USER
46
	select GENERIC_STRNLEN_USER
47
48
	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
	select MODULES_USE_ELF_RELA
49
	select NO_GENERIC_PCI_IOPORT_MAP if PCI
50
	select OLD_SIGSUSPEND
51
	select OLD_SIGACTION
52
	select PCI_DOMAINS if PCI
53
	select HAVE_ARCH_AUDITSYSCALL
54
	select HAVE_FUTEX_CMPXCHG if FUTEX
55
	select HAVE_NMI
56
57
	select NEED_SG_DMA_LENGTH

Linus Torvalds's avatar
Linus Torvalds committed
58
59
60
61
62
63
	help
	  The SuperH is a RISC processor targeted for use in embedded systems
	  and consumer electronics; it was also used in the Sega Dreamcast
	  gaming console.  The SuperH port has a home page at
	  <http://www.linux-sh.org/>.

Paul Mundt's avatar
Paul Mundt committed
64
config SUPERH32
65
	def_bool "$(ARCH)" = "sh"
Chris Smith's avatar
Chris Smith committed
66
67
	select HAVE_KPROBES
	select HAVE_KRETPROBES
68
	select HAVE_IOREMAP_PROT if MMU && !X2TLB
69
	select HAVE_FUNCTION_TRACER
Matt Fleming's avatar
Matt Fleming committed
70
71
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_DYNAMIC_FTRACE
72
	select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
73
	select ARCH_WANT_IPC_PARSE_VERSION
74
	select HAVE_FUNCTION_GRAPH_TRACER
Paul Mundt's avatar
Paul Mundt committed
75
	select HAVE_ARCH_KGDB
76
	select HAVE_HW_BREAKPOINT
77
	select HAVE_MIXED_BREAKPOINTS_REGS
78
	select PERF_EVENTS
79
	select ARCH_HIBERNATION_POSSIBLE if MMU
Paul Mundt's avatar
Paul Mundt committed
80
	select SPARSE_IRQ
81
	select HAVE_STACKPROTECTOR
82
83

config SUPERH64
84
	def_bool "$(ARCH)" = "sh64"
Jiri Slaby's avatar
Jiri Slaby committed
85
	select HAVE_EXIT_THREAD
86
	select KALLSYMS
Paul Mundt's avatar
Paul Mundt committed
87

88
89
90
91
92
config ARCH_DEFCONFIG
	string
	default "arch/sh/configs/shx3_defconfig" if SUPERH32
	default "arch/sh/configs/cayman_defconfig" if SUPERH64

Linus Torvalds's avatar
Linus Torvalds committed
93
config RWSEM_GENERIC_SPINLOCK
94
	def_bool y
Linus Torvalds's avatar
Linus Torvalds committed
95
96
97
98

config RWSEM_XCHGADD_ALGORITHM
	bool

Paul Mundt's avatar
Paul Mundt committed
99
100
config GENERIC_BUG
	def_bool y
101
	depends on BUG && SUPERH32
Paul Mundt's avatar
Paul Mundt committed
102

103
104
105
106
config GENERIC_CSUM
	def_bool y
	depends on SUPERH64

107
config GENERIC_HWEIGHT
108
	def_bool y
109

Linus Torvalds's avatar
Linus Torvalds committed
110
config GENERIC_CALIBRATE_DELAY
111
	bool
Linus Torvalds's avatar
Linus Torvalds committed
112

Paul Mundt's avatar
Paul Mundt committed
113
114
115
116
config GENERIC_LOCKBREAK
	def_bool y
	depends on SMP && PREEMPT

Magnus Damm's avatar
Magnus Damm committed
117
118
119
120
121
config ARCH_SUSPEND_POSSIBLE
	def_bool n

config ARCH_HIBERNATION_POSSIBLE
	def_bool n
122

123
124
config SYS_SUPPORTS_APM_EMULATION
	bool
Magnus Damm's avatar
Magnus Damm committed
125
	select ARCH_SUSPEND_POSSIBLE
126

127
128
129
config SYS_SUPPORTS_HUGETLBFS
	bool

130
131
132
133
134
135
config SYS_SUPPORTS_SMP
	bool

config SYS_SUPPORTS_NUMA
	bool

136
config STACKTRACE_SUPPORT
137
	def_bool y
138
139

config LOCKDEP_SUPPORT
140
	def_bool y
141

142
config ARCH_HAS_ILOG2_U32
143
	def_bool n
144
145

config ARCH_HAS_ILOG2_U64
146
	def_bool n
147

148
config NO_IOPORT_MAP
Paul Mundt's avatar
Paul Mundt committed
149
	def_bool !PCI
150
151
	depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
		   !SH_HP6XX && !SH_SOLUTION_ENGINE
152

Magnus Damm's avatar
Magnus Damm committed
153
154
155
config IO_TRAPPED
	bool

156
157
158
config SWAP_IO_SPACE
	bool

159
160
161
162
163
config DMA_COHERENT
	bool

config DMA_NONCOHERENT
	def_bool !DMA_COHERENT
164
	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
165

166
167
168
169
config PGTABLE_LEVELS
	default 3 if X2TLB
	default 2

Linus Torvalds's avatar
Linus Torvalds committed
170
171
menu "System type"

172
173
174
175
176
#
# Processor families
#
config CPU_SH2
	bool
177
	select SH_INTC
178
179
180
181

config CPU_SH2A
	bool
	select CPU_SH2
Paul Mundt's avatar
Paul Mundt committed
182
	select UNCACHED_MAPPING
183

184
185
186
187
188
189
config CPU_J2
	bool
	select CPU_SH2
	select OF
	select OF_EARLY_FLATTREE

190
191
192
193
config CPU_SH3
	bool
	select CPU_HAS_INTEVT
	select CPU_HAS_SR_RB
194
	select SH_INTC
195
	select SYS_SUPPORTS_SH_TMU
196
197
198
199
200
201

config CPU_SH4
	bool
	select CPU_HAS_INTEVT
	select CPU_HAS_SR_RB
	select CPU_HAS_FPU if !CPU_SH4AL_DSP
202
	select SH_INTC
203
	select SYS_SUPPORTS_SH_TMU
204
	select SYS_SUPPORTS_HUGETLBFS if MMU
205
206
207
208
209
210
211
212
213
214

config CPU_SH4A
	bool
	select CPU_SH4

config CPU_SH4AL_DSP
	bool
	select CPU_SH4A
	select CPU_HAS_DSP

215
216
217
config CPU_SH5
	bool
	select CPU_HAS_FPU
218
	select SYS_SUPPORTS_SH_TMU
219
	select SYS_SUPPORTS_HUGETLBFS if MMU
220

221
222
223
224
225
config CPU_SHX2
	bool

config CPU_SHX3
	bool
226
	select DMA_COHERENT
227
228
	select SYS_SUPPORTS_SMP
	select SYS_SUPPORTS_NUMA
229

230
231
config ARCH_SHMOBILE
	bool
232
	select ARCH_SUSPEND_POSSIBLE
233
	select PM
234

235
236
237
238
239
config CPU_HAS_PMU
       depends on CPU_SH4 || CPU_SH4A
       default y
       bool

240
241
if SUPERH32

242
243
244
245
246
247
248
249
250
251
252
253
choice
	prompt "Processor sub-type selection"

#
# Processor subtypes
#

# SH-2 Processor Support

config CPU_SUBTYPE_SH7619
	bool "Support SH7619 processor"
	select CPU_SH2
254
	select SYS_SUPPORTS_SH_CMT
255

256
257
258
config CPU_SUBTYPE_J2
	bool "Support J2 processor"
	select CPU_J2
Rich Felker's avatar
Rich Felker committed
259
260
	select SYS_SUPPORTS_SMP
	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
261

262
263
# SH-2A Processor Support

264
265
266
267
config CPU_SUBTYPE_SH7201
	bool "Support SH7201 processor"
	select CPU_SH2A
	select CPU_HAS_FPU
268
	select SYS_SUPPORTS_SH_MTU2
269
 
Paul Mundt's avatar
Paul Mundt committed
270
271
272
config CPU_SUBTYPE_SH7203
	bool "Support SH7203 processor"
	select CPU_SH2A
Paul Mundt's avatar
Paul Mundt committed
273
	select CPU_HAS_FPU
274
275
	select SYS_SUPPORTS_SH_CMT
	select SYS_SUPPORTS_SH_MTU2
276
	select PINCTRL
Paul Mundt's avatar
Paul Mundt committed
277

278
279
280
config CPU_SUBTYPE_SH7206
	bool "Support SH7206 processor"
	select CPU_SH2A
281
282
	select SYS_SUPPORTS_SH_CMT
	select SYS_SUPPORTS_SH_MTU2
283

Paul Mundt's avatar
Paul Mundt committed
284
285
286
config CPU_SUBTYPE_SH7263
	bool "Support SH7263 processor"
	select CPU_SH2A
Paul Mundt's avatar
Paul Mundt committed
287
	select CPU_HAS_FPU
288
289
	select SYS_SUPPORTS_SH_CMT
	select SYS_SUPPORTS_SH_MTU2
Paul Mundt's avatar
Paul Mundt committed
290

Phil Edworthy's avatar
Phil Edworthy committed
291
292
293
294
config CPU_SUBTYPE_SH7264
	bool "Support SH7264 processor"
	select CPU_SH2A
	select CPU_HAS_FPU
295
296
	select SYS_SUPPORTS_SH_CMT
	select SYS_SUPPORTS_SH_MTU2
297
	select PINCTRL
Phil Edworthy's avatar
Phil Edworthy committed
298

Phil Edworthy's avatar
Phil Edworthy committed
299
300
301
302
config CPU_SUBTYPE_SH7269
	bool "Support SH7269 processor"
	select CPU_SH2A
	select CPU_HAS_FPU
303
304
	select SYS_SUPPORTS_SH_CMT
	select SYS_SUPPORTS_SH_MTU2
305
	select PINCTRL
Phil Edworthy's avatar
Phil Edworthy committed
306

307
308
309
config CPU_SUBTYPE_MXG
	bool "Support MX-G processor"
	select CPU_SH2A
310
	select SYS_SUPPORTS_SH_MTU2
311
312
313
	help
	  Select MX-G if running on an R8A03022BG part.

314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
# SH-3 Processor Support

config CPU_SUBTYPE_SH7705
	bool "Support SH7705 processor"
	select CPU_SH3

config CPU_SUBTYPE_SH7706
	bool "Support SH7706 processor"
	select CPU_SH3
	help
	  Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.

config CPU_SUBTYPE_SH7707
	bool "Support SH7707 processor"
	select CPU_SH3
	help
	  Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.

config CPU_SUBTYPE_SH7708
	bool "Support SH7708 processor"
	select CPU_SH3
	help
	  Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
	  if you have a 100 Mhz SH-3 HD6417708R CPU.

config CPU_SUBTYPE_SH7709
	bool "Support SH7709 processor"
	select CPU_SH3
	help
	  Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.

config CPU_SUBTYPE_SH7710
	bool "Support SH7710 processor"
	select CPU_SH3
	select CPU_HAS_DSP
	help
	  Select SH7710 if you have a SH3-DSP SH7710 CPU.

config CPU_SUBTYPE_SH7712
	bool "Support SH7712 processor"
	select CPU_SH3
	select CPU_HAS_DSP
	help
	  Select SH7712 if you have a SH3-DSP SH7712 CPU.

config CPU_SUBTYPE_SH7720
	bool "Support SH7720 processor"
	select CPU_SH3
	select CPU_HAS_DSP
363
	select SYS_SUPPORTS_SH_CMT
364
	select USB_OHCI_SH if USB_OHCI_HCD
365
	select PINCTRL
366
367
368
	help
	  Select SH7720 if you have a SH3-DSP SH7720 CPU.

369
370
371
372
config CPU_SUBTYPE_SH7721
	bool "Support SH7721 processor"
	select CPU_SH3
	select CPU_HAS_DSP
373
	select SYS_SUPPORTS_SH_CMT
374
	select USB_OHCI_SH if USB_OHCI_HCD
375
376
377
	help
	  Select SH7721 if you have a SH3-DSP SH7721 CPU.

378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
# SH-4 Processor Support

config CPU_SUBTYPE_SH7750
	bool "Support SH7750 processor"
	select CPU_SH4
	help
	  Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.

config CPU_SUBTYPE_SH7091
	bool "Support SH7091 processor"
	select CPU_SH4
	help
	  Select SH7091 if you have an SH-4 based Sega device (such as
	  the Dreamcast, Naomi, and Naomi 2).

config CPU_SUBTYPE_SH7750R
	bool "Support SH7750R processor"
	select CPU_SH4

config CPU_SUBTYPE_SH7750S
	bool "Support SH7750S processor"
	select CPU_SH4

config CPU_SUBTYPE_SH7751
	bool "Support SH7751 processor"
	select CPU_SH4
	help
	  Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
	  or if you have a HD6417751R CPU.

config CPU_SUBTYPE_SH7751R
	bool "Support SH7751R processor"
	select CPU_SH4

config CPU_SUBTYPE_SH7760
	bool "Support SH7760 processor"
	select CPU_SH4

config CPU_SUBTYPE_SH4_202
	bool "Support SH4-202 processor"
	select CPU_SH4

# SH-4A Processor Support

422
423
424
425
config CPU_SUBTYPE_SH7723
	bool "Support SH7723 processor"
	select CPU_SH4A
	select CPU_SHX2
426
	select ARCH_SHMOBILE
427
	select ARCH_SPARSEMEM_ENABLE
428
	select SYS_SUPPORTS_SH_CMT
429
	select PINCTRL
430
431
432
	help
	  Select SH7723 if you have an SH-MobileR2 CPU.

433
434
435
436
config CPU_SUBTYPE_SH7724
	bool "Support SH7724 processor"
	select CPU_SH4A
	select CPU_SHX2
437
	select ARCH_SHMOBILE
438
	select ARCH_SPARSEMEM_ENABLE
439
	select SYS_SUPPORTS_SH_CMT
440
	select PINCTRL
441
442
443
	help
	  Select SH7724 if you have an SH-MobileR2R CPU.

444
445
446
447
config CPU_SUBTYPE_SH7734
	bool "Support SH7734 processor"
	select CPU_SH4A
	select CPU_SHX2
448
	select PINCTRL
449
450
451
	help
	  Select SH7734 if you have a SH4A SH7734 CPU.

452
453
454
455
config CPU_SUBTYPE_SH7757
	bool "Support SH7757 processor"
	select CPU_SH4A
	select CPU_SHX2
456
	select PINCTRL
457
458
459
	help
	  Select SH7757 if you have a SH4A SH7757 CPU.

460
461
462
config CPU_SUBTYPE_SH7763
	bool "Support SH7763 processor"
	select CPU_SH4A
463
	select USB_OHCI_SH if USB_OHCI_HCD
464
465
466
	help
	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.

467
468
469
470
471
472
473
474
475
476
477
478
config CPU_SUBTYPE_SH7770
	bool "Support SH7770 processor"
	select CPU_SH4A

config CPU_SUBTYPE_SH7780
	bool "Support SH7780 processor"
	select CPU_SH4A

config CPU_SUBTYPE_SH7785
	bool "Support SH7785 processor"
	select CPU_SH4A
	select CPU_SHX2
479
480
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_NUMA
481
	select PINCTRL
482
483
484
485

config CPU_SUBTYPE_SH7786
	bool "Support SH7786 processor"
	select CPU_SH4A
486
	select CPU_SHX3
487
	select CPU_HAS_PTEAEX
Paul Mundt's avatar
Paul Mundt committed
488
	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
489
490
	select USB_OHCI_SH if USB_OHCI_HCD
	select USB_EHCI_SH if USB_EHCI_HCD
491
	select PINCTRL
492
493
494
495
496

config CPU_SUBTYPE_SHX3
	bool "Support SH-X3 processor"
	select CPU_SH4A
	select CPU_SHX3
497
	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
498
	select GPIOLIB
499
	select PINCTRL
500
501
502
503
504
505

# SH4AL-DSP Processor Support

config CPU_SUBTYPE_SH7343
	bool "Support SH7343 processor"
	select CPU_SH4AL_DSP
506
	select ARCH_SHMOBILE
507
	select SYS_SUPPORTS_SH_CMT
508
509
510
511
512

config CPU_SUBTYPE_SH7722
	bool "Support SH7722 processor"
	select CPU_SH4AL_DSP
	select CPU_SHX2
513
	select ARCH_SHMOBILE
514
515
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_NUMA
516
	select SYS_SUPPORTS_SH_CMT
517
	select PINCTRL
518
519
520
521
522

config CPU_SUBTYPE_SH7366
	bool "Support SH7366 processor"
	select CPU_SH4AL_DSP
	select CPU_SHX2
523
	select ARCH_SHMOBILE
524
525
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_NUMA
526
	select SYS_SUPPORTS_SH_CMT
527

528
529
530
531
532
533
534
535
536
endchoice

endif

if SUPERH64

choice
	prompt "Processor sub-type selection"

537
538
539
540
541
542
543
544
# SH-5 Processor Support

config CPU_SUBTYPE_SH5_101
	bool "Support SH5-101 processor"
	select CPU_SH5

config CPU_SUBTYPE_SH5_103
	bool "Support SH5-103 processor"
545
	select CPU_SH5
546

547
548
endchoice

549
550
endif

551
source "arch/sh/mm/Kconfig"
552
 
553
source "arch/sh/Kconfig.cpu"
554

555
source "arch/sh/boards/Kconfig"
556
557
558

menu "Timer and clock configuration"

559
560
config SH_PCLK_FREQ
	int "Peripheral clock frequency (in Hz)"
561
	depends on SH_CLK_CPG_LEGACY
562
	default "31250000" if CPU_SUBTYPE_SH7619
563
564
565
566
567
568
	default "33333333" if CPU_SUBTYPE_SH7770 || \
			      CPU_SUBTYPE_SH7760 || \
			      CPU_SUBTYPE_SH7705 || \
			      CPU_SUBTYPE_SH7203 || \
			      CPU_SUBTYPE_SH7206 || \
			      CPU_SUBTYPE_SH7263 || \
569
			      CPU_SUBTYPE_MXG
Paul Mundt's avatar
Paul Mundt committed
570
	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
571
	default "66000000" if CPU_SUBTYPE_SH4_202
Paul Mundt's avatar
Paul Mundt committed
572
	default "50000000"
Linus Torvalds's avatar
Linus Torvalds committed
573
	help
574
575
576
	  This option is used to specify the peripheral clock frequency.
	  This is necessary for determining the reference clock value on
	  platforms lacking an RTC.
Linus Torvalds's avatar
Linus Torvalds committed
577

578
579
580
config SH_CLK_CPG
	def_bool y

581
config SH_CLK_CPG_LEGACY
582
	depends on SH_CLK_CPG
583
	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
Phil Edworthy's avatar
Phil Edworthy committed
584
		      !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
585
586
		      !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
		      !CPU_SUBTYPE_SH7269
587

588
589
endmenu

590
591
592
593
menu "CPU Frequency scaling"
source "drivers/cpufreq/Kconfig"
endmenu

594
595
source "arch/sh/drivers/Kconfig"

596
endmenu
Linus Torvalds's avatar
Linus Torvalds committed
597

598
599
menu "Kernel features"

Paul Mundt's avatar
Paul Mundt committed
600
601
source kernel/Kconfig.hz

602
603
config KEXEC
	bool "kexec system call (EXPERIMENTAL)"
604
	depends on SUPERH32 && MMU
605
	select KEXEC_CORE
Linus Torvalds's avatar
Linus Torvalds committed
606
	help
607
608
	  kexec is a system call that implements the ability to shutdown your
	  current kernel, and to start another kernel.  It is like a reboot
609
	  but it is independent of the system firmware.  And like a reboot
610
611
	  you can start any kernel with it, not just Linux.

612
	  The name comes from the similarity to the exec system call.
613
614
615

	  It is an ongoing process to be certain the hardware in a machine
	  is properly shutdown, so do not be surprised if this code does not
616
617
618
	  initially work for you.  As of this writing the exact hardware
	  interface is strongly in flux, so no good recommendation can be
	  made.
619

Paul Mundt's avatar
Paul Mundt committed
620
621
config CRASH_DUMP
	bool "kernel crash dumps (EXPERIMENTAL)"
622
	depends on SUPERH32 && BROKEN_ON_SMP
Paul Mundt's avatar
Paul Mundt committed
623
624
625
626
627
628
629
	help
	  Generate crash dump after being started by kexec.
	  This should be normally only set in special crash dump kernels
	  which are loaded in the main kernel with kexec-tools into
	  a specially reserved region and then later executed after
	  a crash by kdump/kexec. The crash dump kernel must be compiled
	  to a memory address not used by the main kernel using
Simon Horman's avatar
Simon Horman committed
630
	  PHYSICAL_START.
Paul Mundt's avatar
Paul Mundt committed
631
632
633

	  For more details see Documentation/kdump/kdump.txt

Magnus Damm's avatar
Magnus Damm committed
634
635
config KEXEC_JUMP
	bool "kexec jump (EXPERIMENTAL)"
636
	depends on SUPERH32 && KEXEC && HIBERNATION
Magnus Damm's avatar
Magnus Damm committed
637
638
639
640
	help
	  Jump between original kernel and kexeced kernel and invoke
	  code via KEXEC

Simon Horman's avatar
Simon Horman committed
641
642
643
644
645
646
647
648
649
650
651
config PHYSICAL_START
	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
	default MEMORY_START
	---help---
	  This gives the physical address where the kernel is loaded
	  and is ordinarily the same as MEMORY_START.

	  Different values are primarily used in the case of kexec on panic
	  where the fail safe kernel needs to run at a different address
	  than the panic-ed kernel.

Paul Mundt's avatar
Paul Mundt committed
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
config SECCOMP
	bool "Enable seccomp to safely compute untrusted bytecode"
	depends on PROC_FS
	help
	  This kernel feature is useful for number crunching applications
	  that may need to compute untrusted bytecode during their
	  execution. By using pipes or other transports made available to
	  the process as file descriptors supporting the read/write
	  syscalls, it's possible to isolate those applications in
	  their own address space using seccomp. Once seccomp is
	  enabled via prctl, it cannot be disabled and the task is only
	  allowed to execute a few safe syscalls defined by each seccomp
	  mode.

	  If unsure, say N.

Linus Torvalds's avatar
Linus Torvalds committed
668
669
config SMP
	bool "Symmetric multi-processing support"
670
	depends on SYS_SUPPORTS_SMP
Linus Torvalds's avatar
Linus Torvalds committed
671
672
	---help---
	  This enables support for systems with more than one CPU. If you have
673
674
	  a system with only one CPU, say N. If you have a system with more
	  than one CPU, say Y.
Linus Torvalds's avatar
Linus Torvalds committed
675

676
	  If you say N here, the kernel will run on uni- and multiprocessor
Linus Torvalds's avatar
Linus Torvalds committed
677
678
	  machines, but will use only one CPU of a multiprocessor machine. If
	  you say Y here, the kernel will run on many, but not all,
679
	  uniprocessor machines. On a uniprocessor machine, the kernel
Linus Torvalds's avatar
Linus Torvalds committed
680
681
682
683
684
	  will run faster if you say N here.

	  People using multiprocessor machines who say Y here should also say
	  Y to "Enhanced Real Time Clock Support", below.

685
	  See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
Adrian Bunk's avatar
Adrian Bunk committed
686
	  available at <http://www.tldp.org/docs.html#howto>.
Linus Torvalds's avatar
Linus Torvalds committed
687
688
689
690
691
692
693

	  If you don't know what to do here, say N.

config NR_CPUS
	int "Maximum number of CPUs (2-32)"
	range 2 32
	depends on SMP
Paul Mundt's avatar
Paul Mundt committed
694
	default "4" if CPU_SUBTYPE_SHX3
Linus Torvalds's avatar
Linus Torvalds committed
695
696
697
698
699
700
701
702
703
	default "2"
	help
	  This allows you to specify the maximum number of CPUs which this
	  kernel will support.  The maximum supported value is 32 and the
	  minimum value which makes sense is 2.

	  This is purely to save memory - each supported CPU adds
	  approximately eight kilobytes to the kernel image.

Paul Mundt's avatar
Paul Mundt committed
704
705
config HOTPLUG_CPU
	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
706
	depends on SMP
Paul Mundt's avatar
Paul Mundt committed
707
708
709
710
	help
	  Say Y here to experiment with turning CPUs off and on.  CPUs
	  can be controlled through /sys/devices/system/cpu.

Paul Mundt's avatar
Paul Mundt committed
711
712
config GUSA
	def_bool y
713
	depends on !SMP && SUPERH32
Paul Mundt's avatar
Paul Mundt committed
714
715
716
717
718
719
720
721
722
723
724
	help
	  This enables support for gUSA (general UserSpace Atomicity).
	  This is the default implementation for both UP and non-ll/sc
	  CPUs, and is used by the libc, amongst others.

	  For additional information, design information can be found 
	  in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.

	  This should only be disabled for special cases where alternate
	  atomicity implementations exist.

725
726
727
728
729
config GUSA_RB
	bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
	depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
	help
	  Enabling this option will allow the kernel to implement some
730
	  atomic operations using a software implementation of load-locked/
731
732
	  store-conditional (LLSC). On machines which do not have hardware
	  LLSC, this should be more efficient than the other alternative of
733
	  disabling interrupts around the atomic sequence.
734

735
736
737
738
739
740
741
742
config HW_PERF_EVENTS
	bool "Enable hardware performance counter support for perf events"
	depends on PERF_EVENTS && CPU_HAS_PMU
	default y
	help
	  Enable hardware performance counter support for perf events. If
	  disabled, perf events will use software events only.

Paul Mundt's avatar
Paul Mundt committed
743
744
source "drivers/sh/Kconfig"

745
endmenu
Linus Torvalds's avatar
Linus Torvalds committed
746

747
menu "Boot options"
Linus Torvalds's avatar
Linus Torvalds committed
748

749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
config USE_BUILTIN_DTB
	bool "Use builtin DTB"
	default n
	depends on SH_DEVICE_TREE
	help
	  Link a device tree blob for particular hardware into the kernel,
	  suppressing use of the DTB pointer provided by the bootloader.
	  This option should only be used with legacy bootloaders that are
	  not capable of providing a DTB to the kernel, or for experimental
	  hardware without stable device tree bindings.

config BUILTIN_DTB_SOURCE
	string "Source file for builtin DTB"
	default ""
	depends on USE_BUILTIN_DTB
	help
	  Base name (without suffix, relative to arch/sh/boot/dts) for the
	  a DTS file that will be used to produce the DTB linked into the
	  kernel.

769
config ZERO_PAGE_OFFSET
770
771
772
773
	hex
	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
				SH_7751_SOLUTION_ENGINE
	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
774
	default "0x00002000" if PAGE_SIZE_8KB
775
	default "0x00001000"
Linus Torvalds's avatar
Linus Torvalds committed
776
	help
777
	  This sets the default offset of zero page.
Linus Torvalds's avatar
Linus Torvalds committed
778

779
config BOOT_LINK_OFFSET
780
781
	hex
	default "0x00210000" if SH_SHMIN
782
	default "0x00400000" if SH_CAYMAN
783
784
785
786
	default "0x00810000" if SH_7780_SOLUTION_ENGINE
	default "0x009e0000" if SH_TITAN
	default "0x01800000" if SH_SDK7780
	default "0x02000000" if SH_EDOSK7760
787
788
789
790
791
	default "0x00800000"
	help
	  This option allows you to set the link address offset of the zImage.
	  This can be useful if you are on a board which has a small amount of
	  memory.
Linus Torvalds's avatar
Linus Torvalds committed
792

793
794
795
796
797
798
799
800
config ENTRY_OFFSET
	hex
	default "0x00001000" if PAGE_SIZE_4KB
	default "0x00002000" if PAGE_SIZE_8KB
	default "0x00004000" if PAGE_SIZE_16KB
	default "0x00010000" if PAGE_SIZE_64KB
	default "0x00000000"

801
802
config ROMIMAGE_MMCIF
	bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
803
	depends on CPU_SUBTYPE_SH7724
804
805
806
807
808
809
810
811
	help
	  Say Y here to include experimental MMCIF loading code in
	  romImage. With this enabled it is possible to write the romImage
	  kernel image to an MMC card and boot the kernel straight from
	  the reset vector. At reset the processor Mask ROM will load the
	  first part of the romImage which in turn loads the rest the kernel
	  image to RAM using the MMCIF hardware block.

812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
choice
	prompt "Kernel command line"
	optional
	default CMDLINE_OVERWRITE
	help
	  Setting this option allows the kernel command line arguments
	  to be set.

config CMDLINE_OVERWRITE
	bool "Overwrite bootloader kernel arguments"
	help
	  Given string will overwrite any arguments passed in by
	  a bootloader.

config CMDLINE_EXTEND
	bool "Extend bootloader kernel arguments"
	help
	  Given string will be concatenated with arguments passed in
	  by a bootloader.

endchoice
Linus Torvalds's avatar
Linus Torvalds committed
833

834
config CMDLINE
835
836
	string "Kernel command line arguments string"
	depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
837
	default "console=ttySC1,115200"
Linus Torvalds's avatar
Linus Torvalds committed
838
839
840

endmenu

841
menu "Bus options"
Linus Torvalds's avatar
Linus Torvalds committed
842

843
844
845
config SUPERHYWAY
	tristate "SuperHyway Bus support"
	depends on CPU_SUBTYPE_SH4_202
Linus Torvalds's avatar
Linus Torvalds committed
846

847
config MAPLE
848
849
850
851
852
853
854
855
856
	bool "Maple Bus support"
	depends on SH_DREAMCAST
	help
	 The Maple Bus is SEGA's serial communication bus for peripherals
	 on the Dreamcast. Without this bus support you won't be able to
	 get your Dreamcast keyboard etc to work, so most users
	 probably want to say 'Y' here, unless you are only using the
	 Dreamcast with a serial line terminal or a remote network
	 connection.
857

Linus Torvalds's avatar
Linus Torvalds committed
858
859
860
861
source "drivers/pcmcia/Kconfig"

endmenu

Andriy Skulysh's avatar
Andriy Skulysh committed
862
menu "Power management options (EXPERIMENTAL)"
Johannes Berg's avatar
Johannes Berg committed
863

Magnus Damm's avatar
Magnus Damm committed
864
865
866
source "kernel/power/Kconfig"

source "drivers/cpuidle/Kconfig"
Andriy Skulysh's avatar
Andriy Skulysh committed
867
868

endmenu