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1 #
2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
4 #
5
6 mainmenu "Linux/SuperH Kernel Configuration"
7
8 config SUPERH
9 def_bool y
10 select EMBEDDED
11 select HAVE_CLK
12 select HAVE_IDE
13 select HAVE_OPROFILE
14 select HAVE_GENERIC_DMA_COHERENT
15 select HAVE_IOREMAP_PROT if MMU
16 select HAVE_ARCH_TRACEHOOK
17 help
18 The SuperH is a RISC processor targeted for use in embedded systems
19 and consumer electronics; it was also used in the Sega Dreamcast
20 gaming console. The SuperH port has a home page at
21 <http://www.linux-sh.org/>.
22
23 config SUPERH32
24 def_bool !SUPERH64
25 select HAVE_KPROBES
26 select HAVE_KRETPROBES
27 select HAVE_FUNCTION_TRACER
28 select HAVE_FTRACE_MCOUNT_RECORD
29 select HAVE_DYNAMIC_FTRACE
30 select HAVE_ARCH_KGDB
31
32 config SUPERH64
33 def_bool y if CPU_SH5
34
35 config ARCH_DEFCONFIG
36 string
37 default "arch/sh/configs/shx3_defconfig" if SUPERH32
38 default "arch/sh/configs/cayman_defconfig" if SUPERH64
39
40 config RWSEM_GENERIC_SPINLOCK
41 def_bool y
42
43 config RWSEM_XCHGADD_ALGORITHM
44 bool
45
46 config GENERIC_BUG
47 def_bool y
48 depends on BUG && SUPERH32
49
50 config GENERIC_FIND_NEXT_BIT
51 def_bool y
52
53 config GENERIC_HWEIGHT
54 def_bool y
55
56 config GENERIC_HARDIRQS
57 def_bool y
58
59 config GENERIC_HARDIRQS_NO__DO_IRQ
60 def_bool y
61
62 config GENERIC_IRQ_PROBE
63 def_bool y
64
65 config GENERIC_GPIO
66 def_bool n
67
68 config GENERIC_CALIBRATE_DELAY
69 bool
70
71 config GENERIC_IOMAP
72 bool
73
74 config GENERIC_TIME
75 def_bool n
76
77 config GENERIC_CLOCKEVENTS
78 def_bool n
79
80 config GENERIC_CLOCKEVENTS_BROADCAST
81 bool
82
83 config GENERIC_LOCKBREAK
84 def_bool y
85 depends on SMP && PREEMPT
86
87 config SYS_SUPPORTS_PM
88 bool
89 depends on !SMP
90
91 config ARCH_SUSPEND_POSSIBLE
92 def_bool n
93
94 config ARCH_HIBERNATION_POSSIBLE
95 def_bool n
96
97 config SYS_SUPPORTS_APM_EMULATION
98 bool
99 select ARCH_SUSPEND_POSSIBLE
100
101 config SYS_SUPPORTS_SMP
102 bool
103
104 config SYS_SUPPORTS_NUMA
105 bool
106
107 config SYS_SUPPORTS_PCI
108 bool
109
110 config SYS_SUPPORTS_CMT
111 bool
112
113 config STACKTRACE_SUPPORT
114 def_bool y
115
116 config LOCKDEP_SUPPORT
117 def_bool y
118
119 config HAVE_LATENCYTOP_SUPPORT
120 def_bool y
121 depends on !SMP
122
123 config ARCH_HAS_ILOG2_U32
124 def_bool n
125
126 config ARCH_HAS_ILOG2_U64
127 def_bool n
128
129 config ARCH_NO_VIRT_TO_BUS
130 def_bool y
131
132 config IO_TRAPPED
133 bool
134
135 source "init/Kconfig"
136
137 source "kernel/Kconfig.freezer"
138
139 menu "System type"
140
141 #
142 # Processor families
143 #
144 config CPU_SH2
145 bool
146
147 config CPU_SH2A
148 bool
149 select CPU_SH2
150
151 config CPU_SH3
152 bool
153 select CPU_HAS_INTEVT
154 select CPU_HAS_SR_RB
155
156 config CPU_SH4
157 bool
158 select CPU_HAS_INTEVT
159 select CPU_HAS_SR_RB
160 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
161 select CPU_HAS_FPU if !CPU_SH4AL_DSP
162
163 config CPU_SH4A
164 bool
165 select CPU_SH4
166
167 config CPU_SH4AL_DSP
168 bool
169 select CPU_SH4A
170 select CPU_HAS_DSP
171
172 config CPU_SH5
173 bool
174 select CPU_HAS_FPU
175
176 config CPU_SHX2
177 bool
178
179 config CPU_SHX3
180 bool
181
182 config ARCH_SHMOBILE
183 bool
184 select ARCH_SUSPEND_POSSIBLE
185
186 choice
187 prompt "Processor sub-type selection"
188
189 #
190 # Processor subtypes
191 #
192
193 # SH-2 Processor Support
194
195 config CPU_SUBTYPE_SH7619
196 bool "Support SH7619 processor"
197 select CPU_SH2
198 select SYS_SUPPORTS_CMT
199
200 # SH-2A Processor Support
201
202 config CPU_SUBTYPE_SH7201
203 bool "Support SH7201 processor"
204 select CPU_SH2A
205 select CPU_HAS_FPU
206
207 config CPU_SUBTYPE_SH7203
208 bool "Support SH7203 processor"
209 select CPU_SH2A
210 select CPU_HAS_FPU
211 select SYS_SUPPORTS_CMT
212
213 config CPU_SUBTYPE_SH7206
214 bool "Support SH7206 processor"
215 select CPU_SH2A
216 select SYS_SUPPORTS_CMT
217
218 config CPU_SUBTYPE_SH7263
219 bool "Support SH7263 processor"
220 select CPU_SH2A
221 select CPU_HAS_FPU
222 select SYS_SUPPORTS_CMT
223
224 config CPU_SUBTYPE_MXG
225 bool "Support MX-G processor"
226 select CPU_SH2A
227 help
228 Select MX-G if running on an R8A03022BG part.
229
230 # SH-3 Processor Support
231
232 config CPU_SUBTYPE_SH7705
233 bool "Support SH7705 processor"
234 select CPU_SH3
235
236 config CPU_SUBTYPE_SH7706
237 bool "Support SH7706 processor"
238 select CPU_SH3
239 help
240 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
241
242 config CPU_SUBTYPE_SH7707
243 bool "Support SH7707 processor"
244 select CPU_SH3
245 help
246 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
247
248 config CPU_SUBTYPE_SH7708
249 bool "Support SH7708 processor"
250 select CPU_SH3
251 help
252 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
253 if you have a 100 Mhz SH-3 HD6417708R CPU.
254
255 config CPU_SUBTYPE_SH7709
256 bool "Support SH7709 processor"
257 select CPU_SH3
258 help
259 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
260
261 config CPU_SUBTYPE_SH7710
262 bool "Support SH7710 processor"
263 select CPU_SH3
264 select CPU_HAS_DSP
265 help
266 Select SH7710 if you have a SH3-DSP SH7710 CPU.
267
268 config CPU_SUBTYPE_SH7712
269 bool "Support SH7712 processor"
270 select CPU_SH3
271 select CPU_HAS_DSP
272 help
273 Select SH7712 if you have a SH3-DSP SH7712 CPU.
274
275 config CPU_SUBTYPE_SH7720
276 bool "Support SH7720 processor"
277 select CPU_SH3
278 select CPU_HAS_DSP
279 help
280 Select SH7720 if you have a SH3-DSP SH7720 CPU.
281
282 config CPU_SUBTYPE_SH7721
283 bool "Support SH7721 processor"
284 select CPU_SH3
285 select CPU_HAS_DSP
286 help
287 Select SH7721 if you have a SH3-DSP SH7721 CPU.
288
289 # SH-4 Processor Support
290
291 config CPU_SUBTYPE_SH7750
292 bool "Support SH7750 processor"
293 select CPU_SH4
294 help
295 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
296
297 config CPU_SUBTYPE_SH7091
298 bool "Support SH7091 processor"
299 select CPU_SH4
300 help
301 Select SH7091 if you have an SH-4 based Sega device (such as
302 the Dreamcast, Naomi, and Naomi 2).
303
304 config CPU_SUBTYPE_SH7750R
305 bool "Support SH7750R processor"
306 select CPU_SH4
307
308 config CPU_SUBTYPE_SH7750S
309 bool "Support SH7750S processor"
310 select CPU_SH4
311
312 config CPU_SUBTYPE_SH7751
313 bool "Support SH7751 processor"
314 select CPU_SH4
315 help
316 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
317 or if you have a HD6417751R CPU.
318
319 config CPU_SUBTYPE_SH7751R
320 bool "Support SH7751R processor"
321 select CPU_SH4
322
323 config CPU_SUBTYPE_SH7760
324 bool "Support SH7760 processor"
325 select CPU_SH4
326
327 config CPU_SUBTYPE_SH4_202
328 bool "Support SH4-202 processor"
329 select CPU_SH4
330
331 # SH-4A Processor Support
332
333 config CPU_SUBTYPE_SH7723
334 bool "Support SH7723 processor"
335 select CPU_SH4A
336 select CPU_SHX2
337 select ARCH_SHMOBILE
338 select ARCH_SPARSEMEM_ENABLE
339 select SYS_SUPPORTS_CMT
340 help
341 Select SH7723 if you have an SH-MobileR2 CPU.
342
343 config CPU_SUBTYPE_SH7763
344 bool "Support SH7763 processor"
345 select CPU_SH4A
346 help
347 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
348
349 config CPU_SUBTYPE_SH7770
350 bool "Support SH7770 processor"
351 select CPU_SH4A
352
353 config CPU_SUBTYPE_SH7780
354 bool "Support SH7780 processor"
355 select CPU_SH4A
356
357 config CPU_SUBTYPE_SH7785
358 bool "Support SH7785 processor"
359 select CPU_SH4A
360 select CPU_SHX2
361 select ARCH_SPARSEMEM_ENABLE
362 select SYS_SUPPORTS_NUMA
363
364 config CPU_SUBTYPE_SH7786
365 bool "Support SH7786 processor"
366 select CPU_SH4A
367 select CPU_SHX3
368 select CPU_HAS_PTEAEX
369 select ARCH_SPARSEMEM_ENABLE
370 select SYS_SUPPORTS_NUMA
371
372 config CPU_SUBTYPE_SHX3
373 bool "Support SH-X3 processor"
374 select CPU_SH4A
375 select CPU_SHX3
376 select ARCH_SPARSEMEM_ENABLE
377 select SYS_SUPPORTS_NUMA
378 select SYS_SUPPORTS_SMP
379 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
380
381 # SH4AL-DSP Processor Support
382
383 config CPU_SUBTYPE_SH7343
384 bool "Support SH7343 processor"
385 select CPU_SH4AL_DSP
386 select ARCH_SHMOBILE
387 select SYS_SUPPORTS_CMT
388
389 config CPU_SUBTYPE_SH7722
390 bool "Support SH7722 processor"
391 select CPU_SH4AL_DSP
392 select CPU_SHX2
393 select ARCH_SHMOBILE
394 select ARCH_SPARSEMEM_ENABLE
395 select SYS_SUPPORTS_NUMA
396 select SYS_SUPPORTS_CMT
397
398 config CPU_SUBTYPE_SH7366
399 bool "Support SH7366 processor"
400 select CPU_SH4AL_DSP
401 select CPU_SHX2
402 select ARCH_SHMOBILE
403 select ARCH_SPARSEMEM_ENABLE
404 select SYS_SUPPORTS_NUMA
405 select SYS_SUPPORTS_CMT
406
407 # SH-5 Processor Support
408
409 config CPU_SUBTYPE_SH5_101
410 bool "Support SH5-101 processor"
411 select CPU_SH5
412
413 config CPU_SUBTYPE_SH5_103
414 bool "Support SH5-103 processor"
415 select CPU_SH5
416
417 endchoice
418
419 source "arch/sh/mm/Kconfig"
420
421 source "arch/sh/Kconfig.cpu"
422
423 source "arch/sh/boards/Kconfig"
424
425 menu "Timer and clock configuration"
426
427 config SH_TMU
428 bool "TMU timer support"
429 depends on CPU_SH3 || CPU_SH4
430 default y
431 select GENERIC_TIME
432 select GENERIC_CLOCKEVENTS
433 help
434 This enables the use of the TMU as the system timer.
435
436 config SH_CMT
437 bool "CMT timer support"
438 depends on SYS_SUPPORTS_CMT && CPU_SH2
439 default y
440 help
441 This enables the use of the CMT as the system timer.
442
443 #
444 # Support for the new-style CMT driver. This will replace SH_CMT
445 # once its other dependencies are merged.
446 #
447 config SH_TIMER_CMT
448 bool "CMT clockevents driver"
449 depends on SYS_SUPPORTS_CMT && !SH_CMT
450 select GENERIC_CLOCKEVENTS
451
452 config SH_MTU2
453 bool "MTU2 timer support"
454 depends on CPU_SH2A
455 default y
456 help
457 This enables the use of the MTU2 as the system timer.
458
459 config SH_TIMER_IRQ
460 int
461 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
462 CPU_SUBTYPE_SH7763
463 default "86" if CPU_SUBTYPE_SH7619
464 default "140" if CPU_SUBTYPE_SH7206
465 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
466 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
467 default "238" if CPU_SUBTYPE_MXG
468 default "16"
469
470 config SH_PCLK_FREQ
471 int "Peripheral clock frequency (in Hz)"
472 default "27000000" if CPU_SUBTYPE_SH7343
473 default "31250000" if CPU_SUBTYPE_SH7619
474 default "32000000" if CPU_SUBTYPE_SH7722
475 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
476 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
477 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
478 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
479 CPU_SUBTYPE_SH7786
480 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
481 default "66000000" if CPU_SUBTYPE_SH4_202
482 default "50000000"
483 help
484 This option is used to specify the peripheral clock frequency.
485 This is necessary for determining the reference clock value on
486 platforms lacking an RTC.
487
488 config SH_CLK_MD
489 int "CPU Mode Pin Setting"
490 depends on CPU_SH2
491 default 6 if CPU_SUBTYPE_SH7206
492 default 5 if CPU_SUBTYPE_SH7619
493 default 0
494 help
495 MD2 - MD0 pin setting.
496
497 source "kernel/time/Kconfig"
498
499 endmenu
500
501 menu "CPU Frequency scaling"
502
503 source "drivers/cpufreq/Kconfig"
504
505 config SH_CPU_FREQ
506 tristate "SuperH CPU Frequency driver"
507 depends on CPU_FREQ
508 select CPU_FREQ_TABLE
509 help
510 This adds the cpufreq driver for SuperH. Any CPU that supports
511 clock rate rounding through the clock framework can use this
512 driver. While it will make the kernel slightly larger, this is
513 harmless for CPUs that don't support rate rounding. The driver
514 will also generate a notice in the boot log before disabling
515 itself if the CPU in question is not capable of rate rounding.
516
517 For details, take a look at <file:Documentation/cpu-freq>.
518
519 If unsure, say N.
520
521 endmenu
522
523 source "arch/sh/drivers/Kconfig"
524
525 endmenu
526
527 menu "Kernel features"
528
529 source kernel/Kconfig.hz
530
531 config KEXEC
532 bool "kexec system call (EXPERIMENTAL)"
533 depends on SUPERH32 && EXPERIMENTAL
534 help
535 kexec is a system call that implements the ability to shutdown your
536 current kernel, and to start another kernel. It is like a reboot
537 but it is independent of the system firmware. And like a reboot
538 you can start any kernel with it, not just Linux.
539
540 The name comes from the similarity to the exec system call.
541
542 It is an ongoing process to be certain the hardware in a machine
543 is properly shutdown, so do not be surprised if this code does not
544 initially work for you. It may help to enable device hotplugging
545 support. As of this writing the exact hardware interface is
546 strongly in flux, so no good recommendation can be made.
547
548 config CRASH_DUMP
549 bool "kernel crash dumps (EXPERIMENTAL)"
550 depends on SUPERH32 && EXPERIMENTAL
551 help
552 Generate crash dump after being started by kexec.
553 This should be normally only set in special crash dump kernels
554 which are loaded in the main kernel with kexec-tools into
555 a specially reserved region and then later executed after
556 a crash by kdump/kexec. The crash dump kernel must be compiled
557 to a memory address not used by the main kernel using
558 MEMORY_START.
559
560 For more details see Documentation/kdump/kdump.txt
561
562 config KEXEC_JUMP
563 bool "kexec jump (EXPERIMENTAL)"
564 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
565 help
566 Jump between original kernel and kexeced kernel and invoke
567 code via KEXEC
568
569 config SECCOMP
570 bool "Enable seccomp to safely compute untrusted bytecode"
571 depends on PROC_FS
572 help
573 This kernel feature is useful for number crunching applications
574 that may need to compute untrusted bytecode during their
575 execution. By using pipes or other transports made available to
576 the process as file descriptors supporting the read/write
577 syscalls, it's possible to isolate those applications in
578 their own address space using seccomp. Once seccomp is
579 enabled via prctl, it cannot be disabled and the task is only
580 allowed to execute a few safe syscalls defined by each seccomp
581 mode.
582
583 If unsure, say N.
584
585 config SMP
586 bool "Symmetric multi-processing support"
587 depends on SYS_SUPPORTS_SMP
588 select USE_GENERIC_SMP_HELPERS
589 ---help---
590 This enables support for systems with more than one CPU. If you have
591 a system with only one CPU, like most personal computers, say N. If
592 you have a system with more than one CPU, say Y.
593
594 If you say N here, the kernel will run on single and multiprocessor
595 machines, but will use only one CPU of a multiprocessor machine. If
596 you say Y here, the kernel will run on many, but not all,
597 singleprocessor machines. On a singleprocessor machine, the kernel
598 will run faster if you say N here.
599
600 People using multiprocessor machines who say Y here should also say
601 Y to "Enhanced Real Time Clock Support", below.
602
603 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
604 available at <http://www.tldp.org/docs.html#howto>.
605
606 If you don't know what to do here, say N.
607
608 config NR_CPUS
609 int "Maximum number of CPUs (2-32)"
610 range 2 32
611 depends on SMP
612 default "4" if CPU_SHX3
613 default "2"
614 help
615 This allows you to specify the maximum number of CPUs which this
616 kernel will support. The maximum supported value is 32 and the
617 minimum value which makes sense is 2.
618
619 This is purely to save memory - each supported CPU adds
620 approximately eight kilobytes to the kernel image.
621
622 source "kernel/Kconfig.preempt"
623
624 config GUSA
625 def_bool y
626 depends on !SMP && SUPERH32
627 help
628 This enables support for gUSA (general UserSpace Atomicity).
629 This is the default implementation for both UP and non-ll/sc
630 CPUs, and is used by the libc, amongst others.
631
632 For additional information, design information can be found
633 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
634
635 This should only be disabled for special cases where alternate
636 atomicity implementations exist.
637
638 config GUSA_RB
639 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
640 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
641 help
642 Enabling this option will allow the kernel to implement some
643 atomic operations using a software implementation of load-locked/
644 store-conditional (LLSC). On machines which do not have hardware
645 LLSC, this should be more efficient than the other alternative of
646 disabling interrupts around the atomic sequence.
647
648 endmenu
649
650 menu "Boot options"
651
652 config ZERO_PAGE_OFFSET
653 hex "Zero page offset"
654 default "0x00004000" if SH_SH03
655 default "0x00010000" if PAGE_SIZE_64KB
656 default "0x00002000" if PAGE_SIZE_8KB
657 default "0x00001000"
658 help
659 This sets the default offset of zero page.
660
661 config BOOT_LINK_OFFSET
662 hex "Link address offset for booting"
663 default "0x00800000"
664 help
665 This option allows you to set the link address offset of the zImage.
666 This can be useful if you are on a board which has a small amount of
667 memory.
668
669 config UBC_WAKEUP
670 bool "Wakeup UBC on startup"
671 depends on CPU_SH4 && !CPU_SH4A
672 help
673 Selecting this option will wakeup the User Break Controller (UBC) on
674 startup. Although the UBC is left in an awake state when the processor
675 comes up, some boot loaders misbehave by putting the UBC to sleep in a
676 power saving state, which causes issues with things like ptrace().
677
678 If unsure, say N.
679
680 config CMDLINE_BOOL
681 bool "Default bootloader kernel arguments"
682
683 config CMDLINE
684 string "Initial kernel command string"
685 depends on CMDLINE_BOOL
686 default "console=ttySC1,115200"
687
688 endmenu
689
690 menu "Bus options"
691
692 config SUPERHYWAY
693 tristate "SuperHyway Bus support"
694 depends on CPU_SUBTYPE_SH4_202
695
696 config MAPLE
697 bool "Maple Bus support"
698 depends on SH_DREAMCAST
699 help
700 The Maple Bus is SEGA's serial communication bus for peripherals
701 on the Dreamcast. Without this bus support you won't be able to
702 get your Dreamcast keyboard etc to work, so most users
703 probably want to say 'Y' here, unless you are only using the
704 Dreamcast with a serial line terminal or a remote network
705 connection.
706
707 source "arch/sh/drivers/pci/Kconfig"
708
709 source "drivers/pci/pcie/Kconfig"
710
711 source "drivers/pci/Kconfig"
712
713 source "drivers/pcmcia/Kconfig"
714
715 source "drivers/pci/hotplug/Kconfig"
716
717 endmenu
718
719 menu "Executable file formats"
720
721 source "fs/Kconfig.binfmt"
722
723 endmenu
724
725 menu "Power management options (EXPERIMENTAL)"
726 depends on EXPERIMENTAL
727
728 source "kernel/power/Kconfig"
729
730 source "drivers/cpuidle/Kconfig"
731
732 endmenu
733
734 source "net/Kconfig"
735
736 source "drivers/Kconfig"
737
738 source "fs/Kconfig"
739
740 source "arch/sh/Kconfig.debug"
741
742 source "security/Kconfig"
743
744 source "crypto/Kconfig"
745
746 source "lib/Kconfig"