Kconfig 19.1 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#

mainmenu "Linux/SuperH Kernel Configuration"

config SUPERH
9
	def_bool y
P
Paul Mundt 已提交
10
	select EMBEDDED
11
	select HAVE_CLK
S
Sam Ravnborg 已提交
12
	select HAVE_IDE
M
Matt Fleming 已提交
13
	select HAVE_LMB
M
Mathieu Desnoyers 已提交
14
	select HAVE_OPROFILE
15
	select HAVE_GENERIC_DMA_COHERENT
16
	select HAVE_IOREMAP_PROT if MMU
17
	select HAVE_ARCH_TRACEHOOK
18
	select HAVE_DMA_API_DEBUG
19
	select HAVE_PERF_EVENTS
20
	select HAVE_KERNEL_GZIP
P
Paul Mundt 已提交
21 22
	select HAVE_KERNEL_BZIP2
	select HAVE_KERNEL_LZMA
23
	select HAVE_SYSCALL_TRACEPOINTS
24
	select RTC_LIB
25
	select GENERIC_ATOMIC64
L
Linus Torvalds 已提交
26 27 28 29 30 31
	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/>.

P
Paul Mundt 已提交
32
config SUPERH32
33
	def_bool ARCH = "sh"
C
Chris Smith 已提交
34 35
	select HAVE_KPROBES
	select HAVE_KRETPROBES
36
	select HAVE_FUNCTION_TRACER
M
Matt Fleming 已提交
37 38
	select HAVE_FTRACE_MCOUNT_RECORD
	select HAVE_DYNAMIC_FTRACE
39
	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
40
	select HAVE_FTRACE_SYSCALLS
41
	select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
M
Matt Fleming 已提交
42
	select HAVE_FUNCTION_GRAPH_TRACER
P
Paul Mundt 已提交
43
	select HAVE_ARCH_KGDB
44
	select ARCH_HIBERNATION_POSSIBLE if MMU
45 46

config SUPERH64
47
	def_bool ARCH = "sh64"
P
Paul Mundt 已提交
48

49 50 51 52 53
config ARCH_DEFCONFIG
	string
	default "arch/sh/configs/shx3_defconfig" if SUPERH32
	default "arch/sh/configs/cayman_defconfig" if SUPERH64

L
Linus Torvalds 已提交
54
config RWSEM_GENERIC_SPINLOCK
55
	def_bool y
L
Linus Torvalds 已提交
56 57 58 59

config RWSEM_XCHGADD_ALGORITHM
	bool

P
Paul Mundt 已提交
60 61
config GENERIC_BUG
	def_bool y
62
	depends on BUG && SUPERH32
P
Paul Mundt 已提交
63

64 65 66 67
config GENERIC_CSUM
	def_bool y
	depends on SUPERH64

68
config GENERIC_FIND_NEXT_BIT
69
	def_bool y
70 71

config GENERIC_HWEIGHT
72
	def_bool y
73

L
Linus Torvalds 已提交
74
config GENERIC_HARDIRQS
75
	def_bool y
L
Linus Torvalds 已提交
76

77 78 79
config GENERIC_HARDIRQS_NO__DO_IRQ
	def_bool y

L
Linus Torvalds 已提交
80
config GENERIC_IRQ_PROBE
81
	def_bool y
L
Linus Torvalds 已提交
82

P
Paul Mundt 已提交
83 84 85
config IRQ_PER_CPU
	def_bool y

M
Magnus Damm 已提交
86 87 88
config GENERIC_GPIO
	def_bool n

L
Linus Torvalds 已提交
89
config GENERIC_CALIBRATE_DELAY
90
	bool
L
Linus Torvalds 已提交
91

92 93 94
config GENERIC_IOMAP
	bool

95
config GENERIC_TIME
96
	def_bool y
97

98
config GENERIC_CLOCKEVENTS
99
	def_bool y
100

101 102 103
config GENERIC_CLOCKEVENTS_BROADCAST
	bool

104 105 106 107
config GENERIC_CMOS_UPDATE
	def_bool y
	depends on SH_SH03 || SH_DREAMCAST

P
Paul Mundt 已提交
108 109 110 111
config GENERIC_LOCKBREAK
	def_bool y
	depends on SMP && PREEMPT

112 113
config SYS_SUPPORTS_PM
	bool
M
Magnus Damm 已提交
114 115 116 117 118 119 120
	depends on !SMP

config ARCH_SUSPEND_POSSIBLE
	def_bool n

config ARCH_HIBERNATION_POSSIBLE
	def_bool n
121

122 123
config SYS_SUPPORTS_APM_EMULATION
	bool
M
Magnus Damm 已提交
124
	select ARCH_SUSPEND_POSSIBLE
125 126 127 128 129 130 131 132 133

config SYS_SUPPORTS_SMP
	bool

config SYS_SUPPORTS_NUMA
	bool

config SYS_SUPPORTS_PCI
	bool
134

135 136 137
config SYS_SUPPORTS_CMT
	bool

138 139 140
config SYS_SUPPORTS_MTU2
	bool

141 142 143
config SYS_SUPPORTS_TMU
	bool

144
config STACKTRACE_SUPPORT
145
	def_bool y
146 147

config LOCKDEP_SUPPORT
148
	def_bool y
149

P
Paul Mundt 已提交
150 151 152 153
config HAVE_LATENCYTOP_SUPPORT
	def_bool y
	depends on !SMP

154
config ARCH_HAS_ILOG2_U32
155
	def_bool n
156 157

config ARCH_HAS_ILOG2_U64
158
	def_bool n
159

160 161 162
config ARCH_NO_VIRT_TO_BUS
	def_bool y

163 164 165
config ARCH_HAS_DEFAULT_IDLE
	def_bool y

166 167 168
config ARCH_HAS_CPU_IDLE_WAIT
	def_bool y

M
Magnus Damm 已提交
169 170 171
config IO_TRAPPED
	bool

L
Linus Torvalds 已提交
172 173
source "init/Kconfig"

174 175
source "kernel/Kconfig.freezer"

L
Linus Torvalds 已提交
176 177
menu "System type"

178 179 180 181 182 183 184 185 186 187 188 189 190 191
#
# Processor families
#
config CPU_SH2
	bool

config CPU_SH2A
	bool
	select CPU_SH2

config CPU_SH3
	bool
	select CPU_HAS_INTEVT
	select CPU_HAS_SR_RB
192
	select SYS_SUPPORTS_TMU
193 194 195 196 197 198

config CPU_SH4
	bool
	select CPU_HAS_INTEVT
	select CPU_HAS_SR_RB
	select CPU_HAS_FPU if !CPU_SH4AL_DSP
199
	select SYS_SUPPORTS_TMU
200 201 202 203 204 205 206 207 208 209

config CPU_SH4A
	bool
	select CPU_SH4

config CPU_SH4AL_DSP
	bool
	select CPU_SH4A
	select CPU_HAS_DSP

210 211 212
config CPU_SH5
	bool
	select CPU_HAS_FPU
213
	select SYS_SUPPORTS_TMU
214

215 216 217 218 219 220
config CPU_SHX2
	bool

config CPU_SHX3
	bool

221 222
config ARCH_SHMOBILE
	bool
M
Magnus Damm 已提交
223
	select ARCH_SUSPEND_POSSIBLE
224 225
	select PM
	select PM_RUNTIME
226

227 228
if SUPERH32

229 230 231 232 233 234 235 236 237 238 239 240
choice
	prompt "Processor sub-type selection"

#
# Processor subtypes
#

# SH-2 Processor Support

config CPU_SUBTYPE_SH7619
	bool "Support SH7619 processor"
	select CPU_SH2
241
	select SYS_SUPPORTS_CMT
242 243 244

# SH-2A Processor Support

245 246 247 248
config CPU_SUBTYPE_SH7201
	bool "Support SH7201 processor"
	select CPU_SH2A
	select CPU_HAS_FPU
M
Magnus Damm 已提交
249
	select SYS_SUPPORTS_MTU2
250
 
P
Paul Mundt 已提交
251 252 253
config CPU_SUBTYPE_SH7203
	bool "Support SH7203 processor"
	select CPU_SH2A
P
Paul Mundt 已提交
254
	select CPU_HAS_FPU
255
	select SYS_SUPPORTS_CMT
M
Magnus Damm 已提交
256
	select SYS_SUPPORTS_MTU2
P
Paul Mundt 已提交
257

258 259 260
config CPU_SUBTYPE_SH7206
	bool "Support SH7206 processor"
	select CPU_SH2A
261
	select SYS_SUPPORTS_CMT
M
Magnus Damm 已提交
262
	select SYS_SUPPORTS_MTU2
263

P
Paul Mundt 已提交
264 265 266
config CPU_SUBTYPE_SH7263
	bool "Support SH7263 processor"
	select CPU_SH2A
P
Paul Mundt 已提交
267
	select CPU_HAS_FPU
268
	select SYS_SUPPORTS_CMT
M
Magnus Damm 已提交
269
	select SYS_SUPPORTS_MTU2
P
Paul Mundt 已提交
270

271 272 273
config CPU_SUBTYPE_MXG
	bool "Support MX-G processor"
	select CPU_SH2A
M
Magnus Damm 已提交
274
	select SYS_SUPPORTS_MTU2
275 276 277
	help
	  Select MX-G if running on an R8A03022BG part.

278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326
# 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
327
	select SYS_SUPPORTS_CMT
328 329 330
	help
	  Select SH7720 if you have a SH3-DSP SH7720 CPU.

331 332 333 334
config CPU_SUBTYPE_SH7721
	bool "Support SH7721 processor"
	select CPU_SH3
	select CPU_HAS_DSP
335
	select SYS_SUPPORTS_CMT
336 337 338
	help
	  Select SH7721 if you have a SH3-DSP SH7721 CPU.

339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382
# 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

383 384 385 386
config CPU_SUBTYPE_SH7723
	bool "Support SH7723 processor"
	select CPU_SH4A
	select CPU_SHX2
387
	select ARCH_SHMOBILE
388
	select ARCH_SPARSEMEM_ENABLE
389
	select SYS_SUPPORTS_CMT
390 391 392
	help
	  Select SH7723 if you have an SH-MobileR2 CPU.

393 394 395 396
config CPU_SUBTYPE_SH7724
	bool "Support SH7724 processor"
	select CPU_SH4A
	select CPU_SHX2
397
	select ARCH_SHMOBILE
398 399 400 401 402
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_CMT
	help
	  Select SH7724 if you have an SH-MobileR2R CPU.

403 404 405 406 407 408 409
config CPU_SUBTYPE_SH7757
	bool "Support SH7757 processor"
	select CPU_SH4A
	select CPU_SHX2
	help
	  Select SH7757 if you have a SH4A SH7757 CPU.

410 411 412 413 414 415
config CPU_SUBTYPE_SH7763
	bool "Support SH7763 processor"
	select CPU_SH4A
	help
	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.

416 417 418 419 420 421 422 423 424 425 426 427
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
428 429 430 431 432 433
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_NUMA

config CPU_SUBTYPE_SH7786
	bool "Support SH7786 processor"
	select CPU_SH4A
434
	select CPU_SHX3
435
	select CPU_HAS_PTEAEX
436 437
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_NUMA
P
Paul Mundt 已提交
438 439
	select SYS_SUPPORTS_SMP
	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
440 441 442 443 444 445 446 447

config CPU_SUBTYPE_SHX3
	bool "Support SH-X3 processor"
	select CPU_SH4A
	select CPU_SHX3
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_NUMA
	select SYS_SUPPORTS_SMP
448
	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
449 450 451 452 453 454

# SH4AL-DSP Processor Support

config CPU_SUBTYPE_SH7343
	bool "Support SH7343 processor"
	select CPU_SH4AL_DSP
455
	select ARCH_SHMOBILE
456
	select SYS_SUPPORTS_CMT
457 458 459 460 461

config CPU_SUBTYPE_SH7722
	bool "Support SH7722 processor"
	select CPU_SH4AL_DSP
	select CPU_SHX2
462
	select ARCH_SHMOBILE
463 464
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_NUMA
465
	select SYS_SUPPORTS_CMT
466 467 468 469 470

config CPU_SUBTYPE_SH7366
	bool "Support SH7366 processor"
	select CPU_SH4AL_DSP
	select CPU_SHX2
471
	select ARCH_SHMOBILE
472 473
	select ARCH_SPARSEMEM_ENABLE
	select SYS_SUPPORTS_NUMA
474
	select SYS_SUPPORTS_CMT
475

476 477 478 479 480 481 482 483 484
endchoice

endif

if SUPERH64

choice
	prompt "Processor sub-type selection"

485 486 487 488 489 490 491 492
# 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"
493
	select CPU_SH5
494

495 496
endchoice

497 498
endif

P
Paul Mundt 已提交
499
source "arch/sh/mm/Kconfig"
500
 
501
source "arch/sh/Kconfig.cpu"
P
Paul Mundt 已提交
502

503
source "arch/sh/boards/Kconfig"
504 505 506

menu "Timer and clock configuration"

507 508
config SH_TIMER_TMU
	bool "TMU timer driver"
M
Magnus Damm 已提交
509
	depends on SYS_SUPPORTS_TMU
510 511 512 513
	default y
	help
	  This enables the build of the TMU timer driver.

514
config SH_TIMER_CMT
M
Magnus Damm 已提交
515 516 517 518 519
	bool "CMT timer driver"
	depends on SYS_SUPPORTS_CMT
	default y
	help
	  This enables build of the CMT timer driver.
520

521 522
config SH_TIMER_MTU2
	bool "MTU2 timer driver"
M
Magnus Damm 已提交
523
	depends on SYS_SUPPORTS_MTU2
524 525 526 527
	default y
	help
	  This enables build of the MTU2 timer driver.

528 529
config SH_PCLK_FREQ
	int "Peripheral clock frequency (in Hz)"
530
	default "27000000" if CPU_SUBTYPE_SH7343
531
	default "31250000" if CPU_SUBTYPE_SH7619
P
Paul Mundt 已提交
532
	default "32000000" if CPU_SUBTYPE_SH7722
533
	default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
534
			      CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
P
Paul Mundt 已提交
535
			      CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
536
			      CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG    || \
537
			      CPU_SUBTYPE_SH7786 || CPU_SUBTYPE_SH7724
P
Paul Mundt 已提交
538
	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
539
	default "66000000" if CPU_SUBTYPE_SH4_202
P
Paul Mundt 已提交
540
	default "50000000"
L
Linus Torvalds 已提交
541
	help
542 543 544
	  This option is used to specify the peripheral clock frequency.
	  This is necessary for determining the reference clock value on
	  platforms lacking an RTC.
L
Linus Torvalds 已提交
545

546 547 548
config SH_CLK_CPG
	def_bool y

549
config SH_CLK_CPG_LEGACY
550
	depends on SH_CLK_CPG
M
Magnus Damm 已提交
551
	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE
552

553 554
config SH_CLK_MD
	int "CPU Mode Pin Setting"
P
Paul Mundt 已提交
555
	depends on CPU_SH2
556 557 558
	default 6 if CPU_SUBTYPE_SH7206
	default 5 if CPU_SUBTYPE_SH7619
	default 0
559
	help
560
	  MD2 - MD0 pin setting.
561

562 563
source "kernel/time/Kconfig"

564 565
endmenu

566 567 568
menu "CPU Frequency scaling"

source "drivers/cpufreq/Kconfig"
L
Linus Torvalds 已提交
569

570 571
config SH_CPU_FREQ
	tristate "SuperH CPU Frequency driver"
572
	depends on CPU_FREQ
573
	select CPU_FREQ_TABLE
L
Linus Torvalds 已提交
574
	help
P
Paul Mundt 已提交
575 576 577 578 579 580
	  This adds the cpufreq driver for SuperH. Any CPU that supports
	  clock rate rounding through the clock framework can use this
	  driver. While it will make the kernel slightly larger, this is
	  harmless for CPUs that don't support rate rounding. The driver
	  will also generate a notice in the boot log before disabling
	  itself if the CPU in question is not capable of rate rounding.
L
Linus Torvalds 已提交
581

582
	  For details, take a look at <file:Documentation/cpu-freq>.
L
Linus Torvalds 已提交
583 584 585

	  If unsure, say N.

586 587
endmenu

P
Paul Mundt 已提交
588 589
source "arch/sh/drivers/Kconfig"

590
endmenu
L
Linus Torvalds 已提交
591

592 593
menu "Kernel features"

P
Paul Mundt 已提交
594 595
source kernel/Kconfig.hz

596 597
config KEXEC
	bool "kexec system call (EXPERIMENTAL)"
598
	depends on SUPERH32 && EXPERIMENTAL && MMU
L
Linus Torvalds 已提交
599
	help
600 601
	  kexec is a system call that implements the ability to shutdown your
	  current kernel, and to start another kernel.  It is like a reboot
602
	  but it is independent of the system firmware.  And like a reboot
603 604
	  you can start any kernel with it, not just Linux.

605
	  The name comes from the similarity to the exec system call.
606 607 608 609 610 611 612

	  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
	  initially work for you.  It may help to enable device hotplugging
	  support.  As of this writing the exact hardware interface is
	  strongly in flux, so no good recommendation can be made.

P
Paul Mundt 已提交
613 614
config CRASH_DUMP
	bool "kernel crash dumps (EXPERIMENTAL)"
615
	depends on SUPERH32 && EXPERIMENTAL
P
Paul Mundt 已提交
616 617 618 619 620 621 622 623 624 625 626
	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
	  MEMORY_START.

	  For more details see Documentation/kdump/kdump.txt

M
Magnus Damm 已提交
627 628 629 630 631 632 633
config KEXEC_JUMP
	bool "kexec jump (EXPERIMENTAL)"
	depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
	help
	  Jump between original kernel and kexeced kernel and invoke
	  code via KEXEC

P
Paul Mundt 已提交
634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649
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.

L
Linus Torvalds 已提交
650 651
config SMP
	bool "Symmetric multi-processing support"
652
	depends on SYS_SUPPORTS_SMP
653
	select USE_GENERIC_SMP_HELPERS
L
Linus Torvalds 已提交
654 655 656 657 658 659 660 661 662 663 664 665 666 667
	---help---
	  This enables support for systems with more than one CPU. If you have
	  a system with only one CPU, like most personal computers, say N. If
	  you have a system with more than one CPU, say Y.

	  If you say N here, the kernel will run on single and multiprocessor
	  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,
	  singleprocessor machines. On a singleprocessor machine, the kernel
	  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.

A
Adrian Bunk 已提交
668 669
	  See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
	  available at <http://www.tldp.org/docs.html#howto>.
L
Linus Torvalds 已提交
670 671 672 673 674 675 676

	  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
P
Paul Mundt 已提交
677
	default "4" if CPU_SUBTYPE_SHX3
L
Linus Torvalds 已提交
678 679 680 681 682 683 684 685 686
	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.

P
Paul Mundt 已提交
687 688
source "kernel/Kconfig.preempt"

P
Paul Mundt 已提交
689 690
config GUSA
	def_bool y
691
	depends on !SMP && SUPERH32
P
Paul Mundt 已提交
692 693 694 695 696 697 698 699 700 701 702
	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.

703 704 705 706 707
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
708
	  atomic operations using a software implementation of load-locked/
709 710
	  store-conditional (LLSC). On machines which do not have hardware
	  LLSC, this should be more efficient than the other alternative of
711
	  disabling interrupts around the atomic sequence.
712

P
Paul Mundt 已提交
713 714 715 716 717 718 719 720 721 722 723 724
config SPARSE_IRQ
	bool "Support sparse irq numbering"
	depends on EXPERIMENTAL
	help
	  This enables support for sparse irqs. This is useful in general
	  as most CPUs have a fairly sparse array of IRQ vectors, which
	  the irq_desc then maps directly on to. Systems with a high
	  number of off-chip IRQs will want to treat this as
	  experimental until they have been independently verified.

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

725
endmenu
L
Linus Torvalds 已提交
726

727
menu "Boot options"
L
Linus Torvalds 已提交
728

729
config ZERO_PAGE_OFFSET
730 731 732 733
	hex
	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
				SH_7751_SOLUTION_ENGINE
	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
734
	default "0x00002000" if PAGE_SIZE_8KB
735
	default "0x00001000"
L
Linus Torvalds 已提交
736
	help
737
	  This sets the default offset of zero page.
L
Linus Torvalds 已提交
738

739
config BOOT_LINK_OFFSET
740 741
	hex
	default "0x00210000" if SH_SHMIN
742
	default "0x00400000" if SH_CAYMAN
743 744 745 746
	default "0x00810000" if SH_7780_SOLUTION_ENGINE
	default "0x009e0000" if SH_TITAN
	default "0x01800000" if SH_SDK7780
	default "0x02000000" if SH_EDOSK7760
747 748 749 750 751
	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.
L
Linus Torvalds 已提交
752

753 754 755 756 757 758 759 760
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"

761 762
config UBC_WAKEUP
	bool "Wakeup UBC on startup"
P
Paul Mundt 已提交
763
	depends on CPU_SH4 && !CPU_SH4A
764 765 766 767 768
	help
	  Selecting this option will wakeup the User Break Controller (UBC) on
	  startup. Although the UBC is left in an awake state when the processor
	  comes up, some boot loaders misbehave by putting the UBC to sleep in a
	  power saving state, which causes issues with things like ptrace().
L
Linus Torvalds 已提交
769

770
	  If unsure, say N.
L
Linus Torvalds 已提交
771

772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792
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
L
Linus Torvalds 已提交
793

794
config CMDLINE
795 796
	string "Kernel command line arguments string"
	depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
797
	default "console=ttySC1,115200"
L
Linus Torvalds 已提交
798 799 800

endmenu

801
menu "Bus options"
L
Linus Torvalds 已提交
802

803 804 805
config SUPERHYWAY
	tristate "SuperHyway Bus support"
	depends on CPU_SUBTYPE_SH4_202
L
Linus Torvalds 已提交
806

807
config MAPLE
808 809 810 811 812 813 814 815 816
	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.
817

L
Linus Torvalds 已提交
818 819
source "arch/sh/drivers/pci/Kconfig"

820 821
source "drivers/pci/pcie/Kconfig"

L
Linus Torvalds 已提交
822 823 824 825 826 827 828 829 830 831 832 833 834 835
source "drivers/pci/Kconfig"

source "drivers/pcmcia/Kconfig"

source "drivers/pci/hotplug/Kconfig"

endmenu

menu "Executable file formats"

source "fs/Kconfig.binfmt"

endmenu

A
Andriy Skulysh 已提交
836
menu "Power management options (EXPERIMENTAL)"
M
Magnus Damm 已提交
837
depends on EXPERIMENTAL
J
Johannes Berg 已提交
838

M
Magnus Damm 已提交
839 840 841
source "kernel/power/Kconfig"

source "drivers/cpuidle/Kconfig"
A
Andriy Skulysh 已提交
842 843 844

endmenu

845 846
source "net/Kconfig"

L
Linus Torvalds 已提交
847 848 849 850 851 852 853 854 855 856 857
source "drivers/Kconfig"

source "fs/Kconfig"

source "arch/sh/Kconfig.debug"

source "security/Kconfig"

source "crypto/Kconfig"

source "lib/Kconfig"