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1config SUPERH
2 def_bool y
3 select EXPERT
4 select CLKDEV_LOOKUP
5 select HAVE_IDE if HAS_IOPORT
6 select HAVE_MEMBLOCK
7 select HAVE_MEMBLOCK_NODE_MAP
8 select ARCH_DISCARD_MEMBLOCK
9 select HAVE_OPROFILE
10 select HAVE_GENERIC_DMA_COHERENT
11 select HAVE_ARCH_TRACEHOOK
12 select HAVE_DMA_API_DEBUG
13 select HAVE_DMA_ATTRS
14 select HAVE_IRQ_WORK
15 select HAVE_PERF_EVENTS
16 select ARCH_HAVE_CUSTOM_GPIO_H
17 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
18 select PERF_USE_VMALLOC
19 select HAVE_KERNEL_GZIP
20 select HAVE_KERNEL_BZIP2
21 select HAVE_KERNEL_LZMA
22 select HAVE_KERNEL_XZ
23 select HAVE_KERNEL_LZO
24 select HAVE_SYSCALL_TRACEPOINTS
25 select HAVE_REGS_AND_STACK_ACCESS_API
26 select HAVE_GENERIC_HARDIRQS
27 select MAY_HAVE_SPARSE_IRQ
28 select IRQ_FORCED_THREADING
29 select RTC_LIB
30 select GENERIC_ATOMIC64
31 select GENERIC_IRQ_SHOW
32 select GENERIC_SMP_IDLE_THREAD
33 select GENERIC_CLOCKEVENTS
34 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
35 select GENERIC_STRNCPY_FROM_USER
36 select GENERIC_STRNLEN_USER
37 help
38 The SuperH is a RISC processor targeted for use in embedded systems
39 and consumer electronics; it was also used in the Sega Dreamcast
40 gaming console. The SuperH port has a home page at
41 <http://www.linux-sh.org/>.
42
43config SUPERH32
44 def_bool ARCH = "sh"
45 select HAVE_KPROBES
46 select HAVE_KRETPROBES
47 select HAVE_IOREMAP_PROT if MMU && !X2TLB
48 select HAVE_FUNCTION_TRACER
49 select HAVE_FTRACE_MCOUNT_RECORD
50 select HAVE_DYNAMIC_FTRACE
51 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
52 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
53 select HAVE_FUNCTION_GRAPH_TRACER
54 select HAVE_ARCH_KGDB
55 select HAVE_HW_BREAKPOINT
56 select HAVE_MIXED_BREAKPOINTS_REGS
57 select PERF_EVENTS
58 select ARCH_HIBERNATION_POSSIBLE if MMU
59 select SPARSE_IRQ
60
61config SUPERH64
62 def_bool ARCH = "sh64"
63
64config ARCH_DEFCONFIG
65 string
66 default "arch/sh/configs/shx3_defconfig" if SUPERH32
67 default "arch/sh/configs/cayman_defconfig" if SUPERH64
68
69config RWSEM_GENERIC_SPINLOCK
70 def_bool y
71
72config RWSEM_XCHGADD_ALGORITHM
73 bool
74
75config GENERIC_BUG
76 def_bool y
77 depends on BUG && SUPERH32
78
79config GENERIC_CSUM
80 def_bool y
81 depends on SUPERH64
82
83config GENERIC_HWEIGHT
84 def_bool y
85
86config IRQ_PER_CPU
87 def_bool y
88
89config GENERIC_GPIO
90 def_bool n
91
92config GENERIC_CALIBRATE_DELAY
93 bool
94
95config GENERIC_LOCKBREAK
96 def_bool y
97 depends on SMP && PREEMPT
98
99config ARCH_SUSPEND_POSSIBLE
100 def_bool n
101
102config ARCH_HIBERNATION_POSSIBLE
103 def_bool n
104
105config SYS_SUPPORTS_APM_EMULATION
106 bool
107 select ARCH_SUSPEND_POSSIBLE
108
109config SYS_SUPPORTS_HUGETLBFS
110 bool
111
112config SYS_SUPPORTS_SMP
113 bool
114
115config SYS_SUPPORTS_NUMA
116 bool
117
118config SYS_SUPPORTS_PCI
119 bool
120
121config SYS_SUPPORTS_CMT
122 bool
123
124config SYS_SUPPORTS_MTU2
125 bool
126
127config SYS_SUPPORTS_TMU
128 bool
129
130config STACKTRACE_SUPPORT
131 def_bool y
132
133config LOCKDEP_SUPPORT
134 def_bool y
135
136config HAVE_LATENCYTOP_SUPPORT
137 def_bool y
138
139config ARCH_HAS_ILOG2_U32
140 def_bool n
141
142config ARCH_HAS_ILOG2_U64
143 def_bool n
144
145config ARCH_NO_VIRT_TO_BUS
146 def_bool y
147
148config ARCH_HAS_DEFAULT_IDLE
149 def_bool y
150
151config NO_IOPORT
152 def_bool !PCI
153 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
154 !SH_HP6XX && !SH_SOLUTION_ENGINE
155
156config IO_TRAPPED
157 bool
158
159config SWAP_IO_SPACE
160 bool
161
162config DMA_COHERENT
163 bool
164
165config DMA_NONCOHERENT
166 def_bool !DMA_COHERENT
167
168config NEED_DMA_MAP_STATE
169 def_bool DMA_NONCOHERENT
170
171config NEED_SG_DMA_LENGTH
172 def_bool y
173
174source "init/Kconfig"
175
176source "kernel/Kconfig.freezer"
177
178menu "System type"
179
180#
181# Processor families
182#
183config CPU_SH2
184 bool
185
186config CPU_SH2A
187 bool
188 select CPU_SH2
189 select UNCACHED_MAPPING
190
191config CPU_SH3
192 bool
193 select CPU_HAS_INTEVT
194 select CPU_HAS_SR_RB
195 select SYS_SUPPORTS_TMU
196
197config CPU_SH4
198 bool
199 select CPU_HAS_INTEVT
200 select CPU_HAS_SR_RB
201 select CPU_HAS_FPU if !CPU_SH4AL_DSP
202 select SYS_SUPPORTS_TMU
203 select SYS_SUPPORTS_HUGETLBFS if MMU
204
205config CPU_SH4A
206 bool
207 select CPU_SH4
208
209config CPU_SH4AL_DSP
210 bool
211 select CPU_SH4A
212 select CPU_HAS_DSP
213
214config CPU_SH5
215 bool
216 select CPU_HAS_FPU
217 select SYS_SUPPORTS_TMU
218 select SYS_SUPPORTS_HUGETLBFS if MMU
219
220config CPU_SHX2
221 bool
222
223config CPU_SHX3
224 bool
225 select DMA_COHERENT
226 select SYS_SUPPORTS_SMP
227 select SYS_SUPPORTS_NUMA
228
229config ARCH_SHMOBILE
230 bool
231 select ARCH_SUSPEND_POSSIBLE
232 select PM
233 select PM_RUNTIME
234
235config CPU_HAS_PMU
236 depends on CPU_SH4 || CPU_SH4A
237 default y
238 bool
239
240if SUPERH32
241
242choice
243 prompt "Processor sub-type selection"
244
245#
246# Processor subtypes
247#
248
249# SH-2 Processor Support
250
251config CPU_SUBTYPE_SH7619
252 bool "Support SH7619 processor"
253 select CPU_SH2
254 select SYS_SUPPORTS_CMT
255
256# SH-2A Processor Support
257
258config CPU_SUBTYPE_SH7201
259 bool "Support SH7201 processor"
260 select CPU_SH2A
261 select CPU_HAS_FPU
262 select SYS_SUPPORTS_MTU2
263
264config CPU_SUBTYPE_SH7203
265 bool "Support SH7203 processor"
266 select CPU_SH2A
267 select CPU_HAS_FPU
268 select SYS_SUPPORTS_CMT
269 select SYS_SUPPORTS_MTU2
270 select ARCH_WANT_OPTIONAL_GPIOLIB
271
272config CPU_SUBTYPE_SH7206
273 bool "Support SH7206 processor"
274 select CPU_SH2A
275 select SYS_SUPPORTS_CMT
276 select SYS_SUPPORTS_MTU2
277
278config CPU_SUBTYPE_SH7263
279 bool "Support SH7263 processor"
280 select CPU_SH2A
281 select CPU_HAS_FPU
282 select SYS_SUPPORTS_CMT
283 select SYS_SUPPORTS_MTU2
284
285config CPU_SUBTYPE_SH7264
286 bool "Support SH7264 processor"
287 select CPU_SH2A
288 select CPU_HAS_FPU
289 select SYS_SUPPORTS_CMT
290 select SYS_SUPPORTS_MTU2
291
292config CPU_SUBTYPE_SH7269
293 bool "Support SH7269 processor"
294 select CPU_SH2A
295 select CPU_HAS_FPU
296 select SYS_SUPPORTS_CMT
297 select SYS_SUPPORTS_MTU2
298
299config CPU_SUBTYPE_MXG
300 bool "Support MX-G processor"
301 select CPU_SH2A
302 select SYS_SUPPORTS_MTU2
303 help
304 Select MX-G if running on an R8A03022BG part.
305
306# SH-3 Processor Support
307
308config CPU_SUBTYPE_SH7705
309 bool "Support SH7705 processor"
310 select CPU_SH3
311
312config CPU_SUBTYPE_SH7706
313 bool "Support SH7706 processor"
314 select CPU_SH3
315 help
316 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
317
318config CPU_SUBTYPE_SH7707
319 bool "Support SH7707 processor"
320 select CPU_SH3
321 help
322 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
323
324config CPU_SUBTYPE_SH7708
325 bool "Support SH7708 processor"
326 select CPU_SH3
327 help
328 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
329 if you have a 100 Mhz SH-3 HD6417708R CPU.
330
331config CPU_SUBTYPE_SH7709
332 bool "Support SH7709 processor"
333 select CPU_SH3
334 help
335 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
336
337config CPU_SUBTYPE_SH7710
338 bool "Support SH7710 processor"
339 select CPU_SH3
340 select CPU_HAS_DSP
341 help
342 Select SH7710 if you have a SH3-DSP SH7710 CPU.
343
344config CPU_SUBTYPE_SH7712
345 bool "Support SH7712 processor"
346 select CPU_SH3
347 select CPU_HAS_DSP
348 help
349 Select SH7712 if you have a SH3-DSP SH7712 CPU.
350
351config CPU_SUBTYPE_SH7720
352 bool "Support SH7720 processor"
353 select CPU_SH3
354 select CPU_HAS_DSP
355 select SYS_SUPPORTS_CMT
356 select ARCH_WANT_OPTIONAL_GPIOLIB
357 select USB_ARCH_HAS_OHCI
358 select USB_OHCI_SH if USB_OHCI_HCD
359 help
360 Select SH7720 if you have a SH3-DSP SH7720 CPU.
361
362config CPU_SUBTYPE_SH7721
363 bool "Support SH7721 processor"
364 select CPU_SH3
365 select CPU_HAS_DSP
366 select SYS_SUPPORTS_CMT
367 select USB_ARCH_HAS_OHCI
368 select USB_OHCI_SH if USB_OHCI_HCD
369 help
370 Select SH7721 if you have a SH3-DSP SH7721 CPU.
371
372# SH-4 Processor Support
373
374config CPU_SUBTYPE_SH7750
375 bool "Support SH7750 processor"
376 select CPU_SH4
377 help
378 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
379
380config CPU_SUBTYPE_SH7091
381 bool "Support SH7091 processor"
382 select CPU_SH4
383 help
384 Select SH7091 if you have an SH-4 based Sega device (such as
385 the Dreamcast, Naomi, and Naomi 2).
386
387config CPU_SUBTYPE_SH7750R
388 bool "Support SH7750R processor"
389 select CPU_SH4
390
391config CPU_SUBTYPE_SH7750S
392 bool "Support SH7750S processor"
393 select CPU_SH4
394
395config CPU_SUBTYPE_SH7751
396 bool "Support SH7751 processor"
397 select CPU_SH4
398 help
399 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
400 or if you have a HD6417751R CPU.
401
402config CPU_SUBTYPE_SH7751R
403 bool "Support SH7751R processor"
404 select CPU_SH4
405
406config CPU_SUBTYPE_SH7760
407 bool "Support SH7760 processor"
408 select CPU_SH4
409
410config CPU_SUBTYPE_SH4_202
411 bool "Support SH4-202 processor"
412 select CPU_SH4
413
414# SH-4A Processor Support
415
416config CPU_SUBTYPE_SH7723
417 bool "Support SH7723 processor"
418 select CPU_SH4A
419 select CPU_SHX2
420 select ARCH_SHMOBILE
421 select ARCH_SPARSEMEM_ENABLE
422 select SYS_SUPPORTS_CMT
423 select ARCH_WANT_OPTIONAL_GPIOLIB
424 help
425 Select SH7723 if you have an SH-MobileR2 CPU.
426
427config CPU_SUBTYPE_SH7724
428 bool "Support SH7724 processor"
429 select CPU_SH4A
430 select CPU_SHX2
431 select ARCH_SHMOBILE
432 select ARCH_SPARSEMEM_ENABLE
433 select SYS_SUPPORTS_CMT
434 select ARCH_WANT_OPTIONAL_GPIOLIB
435 help
436 Select SH7724 if you have an SH-MobileR2R CPU.
437
438config CPU_SUBTYPE_SH7734
439 bool "Support SH7734 processor"
440 select CPU_SH4A
441 select CPU_SHX2
442 select ARCH_WANT_OPTIONAL_GPIOLIB
443 select USB_ARCH_HAS_OHCI
444 select USB_ARCH_HAS_EHCI
445 help
446 Select SH7734 if you have a SH4A SH7734 CPU.
447
448config CPU_SUBTYPE_SH7757
449 bool "Support SH7757 processor"
450 select CPU_SH4A
451 select CPU_SHX2
452 select ARCH_WANT_OPTIONAL_GPIOLIB
453 select USB_ARCH_HAS_OHCI
454 select USB_ARCH_HAS_EHCI
455 help
456 Select SH7757 if you have a SH4A SH7757 CPU.
457
458config CPU_SUBTYPE_SH7763
459 bool "Support SH7763 processor"
460 select CPU_SH4A
461 select USB_ARCH_HAS_OHCI
462 select USB_OHCI_SH if USB_OHCI_HCD
463 help
464 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
465
466config CPU_SUBTYPE_SH7770
467 bool "Support SH7770 processor"
468 select CPU_SH4A
469
470config CPU_SUBTYPE_SH7780
471 bool "Support SH7780 processor"
472 select CPU_SH4A
473
474config CPU_SUBTYPE_SH7785
475 bool "Support SH7785 processor"
476 select CPU_SH4A
477 select CPU_SHX2
478 select ARCH_SPARSEMEM_ENABLE
479 select SYS_SUPPORTS_NUMA
480 select ARCH_WANT_OPTIONAL_GPIOLIB
481
482config CPU_SUBTYPE_SH7786
483 bool "Support SH7786 processor"
484 select CPU_SH4A
485 select CPU_SHX3
486 select CPU_HAS_PTEAEX
487 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
488 select ARCH_WANT_OPTIONAL_GPIOLIB
489 select USB_ARCH_HAS_OHCI
490 select USB_OHCI_SH if USB_OHCI_HCD
491 select USB_ARCH_HAS_EHCI
492 select USB_EHCI_SH if USB_EHCI_HCD
493
494config CPU_SUBTYPE_SHX3
495 bool "Support SH-X3 processor"
496 select CPU_SH4A
497 select CPU_SHX3
498 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
499 select ARCH_REQUIRE_GPIOLIB
500
501# SH4AL-DSP Processor Support
502
503config CPU_SUBTYPE_SH7343
504 bool "Support SH7343 processor"
505 select CPU_SH4AL_DSP
506 select ARCH_SHMOBILE
507 select SYS_SUPPORTS_CMT
508
509config CPU_SUBTYPE_SH7722
510 bool "Support SH7722 processor"
511 select CPU_SH4AL_DSP
512 select CPU_SHX2
513 select ARCH_SHMOBILE
514 select ARCH_SPARSEMEM_ENABLE
515 select SYS_SUPPORTS_NUMA
516 select SYS_SUPPORTS_CMT
517 select ARCH_WANT_OPTIONAL_GPIOLIB
518
519config CPU_SUBTYPE_SH7366
520 bool "Support SH7366 processor"
521 select CPU_SH4AL_DSP
522 select CPU_SHX2
523 select ARCH_SHMOBILE
524 select ARCH_SPARSEMEM_ENABLE
525 select SYS_SUPPORTS_NUMA
526 select SYS_SUPPORTS_CMT
527
528endchoice
529
530endif
531
532if SUPERH64
533
534choice
535 prompt "Processor sub-type selection"
536
537# SH-5 Processor Support
538
539config CPU_SUBTYPE_SH5_101
540 bool "Support SH5-101 processor"
541 select CPU_SH5
542
543config CPU_SUBTYPE_SH5_103
544 bool "Support SH5-103 processor"
545 select CPU_SH5
546
547endchoice
548
549endif
550
551source "arch/sh/mm/Kconfig"
552
553source "arch/sh/Kconfig.cpu"
554
555source "arch/sh/boards/Kconfig"
556
557menu "Timer and clock configuration"
558
559config SH_TIMER_TMU
560 bool "TMU timer driver"
561 depends on SYS_SUPPORTS_TMU
562 default y
563 help
564 This enables the build of the TMU timer driver.
565
566config SH_TIMER_CMT
567 bool "CMT timer driver"
568 depends on SYS_SUPPORTS_CMT
569 default y
570 help
571 This enables build of the CMT timer driver.
572
573config SH_TIMER_MTU2
574 bool "MTU2 timer driver"
575 depends on SYS_SUPPORTS_MTU2
576 default y
577 help
578 This enables build of the MTU2 timer driver.
579
580config SH_PCLK_FREQ
581 int "Peripheral clock frequency (in Hz)"
582 depends on SH_CLK_CPG_LEGACY
583 default "31250000" if CPU_SUBTYPE_SH7619
584 default "33333333" if CPU_SUBTYPE_SH7770 || \
585 CPU_SUBTYPE_SH7760 || \
586 CPU_SUBTYPE_SH7705 || \
587 CPU_SUBTYPE_SH7203 || \
588 CPU_SUBTYPE_SH7206 || \
589 CPU_SUBTYPE_SH7263 || \
590 CPU_SUBTYPE_MXG
591 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
592 default "66000000" if CPU_SUBTYPE_SH4_202
593 default "50000000"
594 help
595 This option is used to specify the peripheral clock frequency.
596 This is necessary for determining the reference clock value on
597 platforms lacking an RTC.
598
599config SH_CLK_CPG
600 def_bool y
601
602config SH_CLK_CPG_LEGACY
603 depends on SH_CLK_CPG
604 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
605 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
606 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
607 !CPU_SUBTYPE_SH7269
608
609endmenu
610
611menu "CPU Frequency scaling"
612
613source "drivers/cpufreq/Kconfig"
614
615config SH_CPU_FREQ
616 tristate "SuperH CPU Frequency driver"
617 depends on CPU_FREQ
618 select CPU_FREQ_TABLE
619 help
620 This adds the cpufreq driver for SuperH. Any CPU that supports
621 clock rate rounding through the clock framework can use this
622 driver. While it will make the kernel slightly larger, this is
623 harmless for CPUs that don't support rate rounding. The driver
624 will also generate a notice in the boot log before disabling
625 itself if the CPU in question is not capable of rate rounding.
626
627 For details, take a look at <file:Documentation/cpu-freq>.
628
629 If unsure, say N.
630
631endmenu
632
633source "arch/sh/drivers/Kconfig"
634
635endmenu
636
637menu "Kernel features"
638
639source kernel/Kconfig.hz
640
641config KEXEC
642 bool "kexec system call (EXPERIMENTAL)"
643 depends on SUPERH32 && EXPERIMENTAL && MMU
644 help
645 kexec is a system call that implements the ability to shutdown your
646 current kernel, and to start another kernel. It is like a reboot
647 but it is independent of the system firmware. And like a reboot
648 you can start any kernel with it, not just Linux.
649
650 The name comes from the similarity to the exec system call.
651
652 It is an ongoing process to be certain the hardware in a machine
653 is properly shutdown, so do not be surprised if this code does not
654 initially work for you. It may help to enable device hotplugging
655 support. As of this writing the exact hardware interface is
656 strongly in flux, so no good recommendation can be made.
657
658config CRASH_DUMP
659 bool "kernel crash dumps (EXPERIMENTAL)"
660 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
661 help
662 Generate crash dump after being started by kexec.
663 This should be normally only set in special crash dump kernels
664 which are loaded in the main kernel with kexec-tools into
665 a specially reserved region and then later executed after
666 a crash by kdump/kexec. The crash dump kernel must be compiled
667 to a memory address not used by the main kernel using
668 PHYSICAL_START.
669
670 For more details see Documentation/kdump/kdump.txt
671
672config KEXEC_JUMP
673 bool "kexec jump (EXPERIMENTAL)"
674 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
675 help
676 Jump between original kernel and kexeced kernel and invoke
677 code via KEXEC
678
679config PHYSICAL_START
680 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
681 default MEMORY_START
682 ---help---
683 This gives the physical address where the kernel is loaded
684 and is ordinarily the same as MEMORY_START.
685
686 Different values are primarily used in the case of kexec on panic
687 where the fail safe kernel needs to run at a different address
688 than the panic-ed kernel.
689
690config SECCOMP
691 bool "Enable seccomp to safely compute untrusted bytecode"
692 depends on PROC_FS
693 help
694 This kernel feature is useful for number crunching applications
695 that may need to compute untrusted bytecode during their
696 execution. By using pipes or other transports made available to
697 the process as file descriptors supporting the read/write
698 syscalls, it's possible to isolate those applications in
699 their own address space using seccomp. Once seccomp is
700 enabled via prctl, it cannot be disabled and the task is only
701 allowed to execute a few safe syscalls defined by each seccomp
702 mode.
703
704 If unsure, say N.
705
706config CC_STACKPROTECTOR
707 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
708 depends on SUPERH32 && EXPERIMENTAL
709 help
710 This option turns on the -fstack-protector GCC feature. This
711 feature puts, at the beginning of functions, a canary value on
712 the stack just before the return address, and validates
713 the value just before actually returning. Stack based buffer
714 overflows (that need to overwrite this return address) now also
715 overwrite the canary, which gets detected and the attack is then
716 neutralized via a kernel panic.
717
718 This feature requires gcc version 4.2 or above.
719
720config SMP
721 bool "Symmetric multi-processing support"
722 depends on SYS_SUPPORTS_SMP
723 select USE_GENERIC_SMP_HELPERS
724 ---help---
725 This enables support for systems with more than one CPU. If you have
726 a system with only one CPU, like most personal computers, say N. If
727 you have a system with more than one CPU, say Y.
728
729 If you say N here, the kernel will run on single and multiprocessor
730 machines, but will use only one CPU of a multiprocessor machine. If
731 you say Y here, the kernel will run on many, but not all,
732 singleprocessor machines. On a singleprocessor machine, the kernel
733 will run faster if you say N here.
734
735 People using multiprocessor machines who say Y here should also say
736 Y to "Enhanced Real Time Clock Support", below.
737
738 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
739 available at <http://www.tldp.org/docs.html#howto>.
740
741 If you don't know what to do here, say N.
742
743config NR_CPUS
744 int "Maximum number of CPUs (2-32)"
745 range 2 32
746 depends on SMP
747 default "4" if CPU_SUBTYPE_SHX3
748 default "2"
749 help
750 This allows you to specify the maximum number of CPUs which this
751 kernel will support. The maximum supported value is 32 and the
752 minimum value which makes sense is 2.
753
754 This is purely to save memory - each supported CPU adds
755 approximately eight kilobytes to the kernel image.
756
757config HOTPLUG_CPU
758 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
759 depends on SMP && HOTPLUG && EXPERIMENTAL
760 help
761 Say Y here to experiment with turning CPUs off and on. CPUs
762 can be controlled through /sys/devices/system/cpu.
763
764source "kernel/Kconfig.preempt"
765
766config GUSA
767 def_bool y
768 depends on !SMP && SUPERH32
769 help
770 This enables support for gUSA (general UserSpace Atomicity).
771 This is the default implementation for both UP and non-ll/sc
772 CPUs, and is used by the libc, amongst others.
773
774 For additional information, design information can be found
775 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
776
777 This should only be disabled for special cases where alternate
778 atomicity implementations exist.
779
780config GUSA_RB
781 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
782 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
783 help
784 Enabling this option will allow the kernel to implement some
785 atomic operations using a software implementation of load-locked/
786 store-conditional (LLSC). On machines which do not have hardware
787 LLSC, this should be more efficient than the other alternative of
788 disabling interrupts around the atomic sequence.
789
790config HW_PERF_EVENTS
791 bool "Enable hardware performance counter support for perf events"
792 depends on PERF_EVENTS && CPU_HAS_PMU
793 default y
794 help
795 Enable hardware performance counter support for perf events. If
796 disabled, perf events will use software events only.
797
798source "drivers/sh/Kconfig"
799
800endmenu
801
802menu "Boot options"
803
804config ZERO_PAGE_OFFSET
805 hex
806 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
807 SH_7751_SOLUTION_ENGINE
808 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
809 default "0x00002000" if PAGE_SIZE_8KB
810 default "0x00001000"
811 help
812 This sets the default offset of zero page.
813
814config BOOT_LINK_OFFSET
815 hex
816 default "0x00210000" if SH_SHMIN
817 default "0x00400000" if SH_CAYMAN
818 default "0x00810000" if SH_7780_SOLUTION_ENGINE
819 default "0x009e0000" if SH_TITAN
820 default "0x01800000" if SH_SDK7780
821 default "0x02000000" if SH_EDOSK7760
822 default "0x00800000"
823 help
824 This option allows you to set the link address offset of the zImage.
825 This can be useful if you are on a board which has a small amount of
826 memory.
827
828config ENTRY_OFFSET
829 hex
830 default "0x00001000" if PAGE_SIZE_4KB
831 default "0x00002000" if PAGE_SIZE_8KB
832 default "0x00004000" if PAGE_SIZE_16KB
833 default "0x00010000" if PAGE_SIZE_64KB
834 default "0x00000000"
835
836config ROMIMAGE_MMCIF
837 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
838 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
839 help
840 Say Y here to include experimental MMCIF loading code in
841 romImage. With this enabled it is possible to write the romImage
842 kernel image to an MMC card and boot the kernel straight from
843 the reset vector. At reset the processor Mask ROM will load the
844 first part of the romImage which in turn loads the rest the kernel
845 image to RAM using the MMCIF hardware block.
846
847choice
848 prompt "Kernel command line"
849 optional
850 default CMDLINE_OVERWRITE
851 help
852 Setting this option allows the kernel command line arguments
853 to be set.
854
855config CMDLINE_OVERWRITE
856 bool "Overwrite bootloader kernel arguments"
857 help
858 Given string will overwrite any arguments passed in by
859 a bootloader.
860
861config CMDLINE_EXTEND
862 bool "Extend bootloader kernel arguments"
863 help
864 Given string will be concatenated with arguments passed in
865 by a bootloader.
866
867endchoice
868
869config CMDLINE
870 string "Kernel command line arguments string"
871 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
872 default "console=ttySC1,115200"
873
874endmenu
875
876menu "Bus options"
877
878config SUPERHYWAY
879 tristate "SuperHyway Bus support"
880 depends on CPU_SUBTYPE_SH4_202
881
882config MAPLE
883 bool "Maple Bus support"
884 depends on SH_DREAMCAST
885 help
886 The Maple Bus is SEGA's serial communication bus for peripherals
887 on the Dreamcast. Without this bus support you won't be able to
888 get your Dreamcast keyboard etc to work, so most users
889 probably want to say 'Y' here, unless you are only using the
890 Dreamcast with a serial line terminal or a remote network
891 connection.
892
893config PCI
894 bool "PCI support"
895 depends on SYS_SUPPORTS_PCI
896 select PCI_DOMAINS
897 select GENERIC_PCI_IOMAP
898 select NO_GENERIC_PCI_IOPORT_MAP
899 help
900 Find out whether you have a PCI motherboard. PCI is the name of a
901 bus system, i.e. the way the CPU talks to the other stuff inside
902 your box. If you have PCI, say Y, otherwise N.
903
904config PCI_DOMAINS
905 bool
906
907source "drivers/pci/pcie/Kconfig"
908
909source "drivers/pci/Kconfig"
910
911source "drivers/pcmcia/Kconfig"
912
913source "drivers/pci/hotplug/Kconfig"
914
915endmenu
916
917menu "Executable file formats"
918
919source "fs/Kconfig.binfmt"
920
921endmenu
922
923menu "Power management options (EXPERIMENTAL)"
924depends on EXPERIMENTAL
925
926source "kernel/power/Kconfig"
927
928source "drivers/cpuidle/Kconfig"
929
930endmenu
931
932source "net/Kconfig"
933
934source "drivers/Kconfig"
935
936source "fs/Kconfig"
937
938source "arch/sh/Kconfig.debug"
939
940source "security/Kconfig"
941
942source "crypto/Kconfig"
943
944source "lib/Kconfig"
1config SUPERH
2 def_bool y
3 select EXPERT
4 select CLKDEV_LOOKUP
5 select HAVE_IDE if HAS_IOPORT
6 select HAVE_MEMBLOCK
7 select HAVE_OPROFILE
8 select HAVE_GENERIC_DMA_COHERENT
9 select HAVE_ARCH_TRACEHOOK
10 select HAVE_DMA_API_DEBUG
11 select HAVE_DMA_ATTRS
12 select HAVE_IRQ_WORK
13 select HAVE_PERF_EVENTS
14 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
15 select PERF_USE_VMALLOC
16 select HAVE_KERNEL_GZIP
17 select HAVE_KERNEL_BZIP2
18 select HAVE_KERNEL_LZMA
19 select HAVE_KERNEL_XZ
20 select HAVE_KERNEL_LZO
21 select HAVE_SYSCALL_TRACEPOINTS
22 select HAVE_REGS_AND_STACK_ACCESS_API
23 select HAVE_GENERIC_HARDIRQS
24 select HAVE_SPARSE_IRQ
25 select IRQ_FORCED_THREADING
26 select RTC_LIB
27 select GENERIC_ATOMIC64
28 select GENERIC_IRQ_SHOW
29 help
30 The SuperH is a RISC processor targeted for use in embedded systems
31 and consumer electronics; it was also used in the Sega Dreamcast
32 gaming console. The SuperH port has a home page at
33 <http://www.linux-sh.org/>.
34
35config SUPERH32
36 def_bool ARCH = "sh"
37 select HAVE_KPROBES
38 select HAVE_KRETPROBES
39 select HAVE_IOREMAP_PROT if MMU && !X2TLB
40 select HAVE_FUNCTION_TRACER
41 select HAVE_FTRACE_MCOUNT_RECORD
42 select HAVE_DYNAMIC_FTRACE
43 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
44 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
45 select HAVE_FUNCTION_GRAPH_TRACER
46 select HAVE_ARCH_KGDB
47 select HAVE_HW_BREAKPOINT
48 select HAVE_MIXED_BREAKPOINTS_REGS
49 select PERF_EVENTS
50 select ARCH_HIBERNATION_POSSIBLE if MMU
51 select SPARSE_IRQ
52
53config SUPERH64
54 def_bool ARCH = "sh64"
55
56config ARCH_DEFCONFIG
57 string
58 default "arch/sh/configs/shx3_defconfig" if SUPERH32
59 default "arch/sh/configs/cayman_defconfig" if SUPERH64
60
61config RWSEM_GENERIC_SPINLOCK
62 def_bool y
63
64config RWSEM_XCHGADD_ALGORITHM
65 bool
66
67config GENERIC_BUG
68 def_bool y
69 depends on BUG && SUPERH32
70
71config GENERIC_CSUM
72 def_bool y
73 depends on SUPERH64
74
75config GENERIC_HWEIGHT
76 def_bool y
77
78config IRQ_PER_CPU
79 def_bool y
80
81config GENERIC_GPIO
82 def_bool n
83
84config GENERIC_CALIBRATE_DELAY
85 bool
86
87config GENERIC_IOMAP
88 bool
89
90config GENERIC_CLOCKEVENTS
91 def_bool y
92
93config GENERIC_CLOCKEVENTS_BROADCAST
94 bool
95
96config GENERIC_CMOS_UPDATE
97 def_bool y
98 depends on SH_SH03 || SH_DREAMCAST
99
100config GENERIC_LOCKBREAK
101 def_bool y
102 depends on SMP && PREEMPT
103
104config SYS_SUPPORTS_PM
105 bool
106 depends on !SMP
107
108config ARCH_SUSPEND_POSSIBLE
109 def_bool n
110
111config ARCH_HIBERNATION_POSSIBLE
112 def_bool n
113
114config SYS_SUPPORTS_APM_EMULATION
115 bool
116 select ARCH_SUSPEND_POSSIBLE
117
118config SYS_SUPPORTS_HUGETLBFS
119 bool
120
121config SYS_SUPPORTS_SMP
122 bool
123
124config SYS_SUPPORTS_NUMA
125 bool
126
127config SYS_SUPPORTS_PCI
128 bool
129
130config SYS_SUPPORTS_CMT
131 bool
132
133config SYS_SUPPORTS_MTU2
134 bool
135
136config SYS_SUPPORTS_TMU
137 bool
138
139config STACKTRACE_SUPPORT
140 def_bool y
141
142config LOCKDEP_SUPPORT
143 def_bool y
144
145config HAVE_LATENCYTOP_SUPPORT
146 def_bool y
147
148config ARCH_HAS_ILOG2_U32
149 def_bool n
150
151config ARCH_HAS_ILOG2_U64
152 def_bool n
153
154config ARCH_NO_VIRT_TO_BUS
155 def_bool y
156
157config ARCH_HAS_DEFAULT_IDLE
158 def_bool y
159
160config ARCH_HAS_CPU_IDLE_WAIT
161 def_bool y
162
163config NO_IOPORT
164 def_bool !PCI
165 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN
166
167config IO_TRAPPED
168 bool
169
170config DMA_COHERENT
171 bool
172
173config DMA_NONCOHERENT
174 def_bool !DMA_COHERENT
175
176config NEED_DMA_MAP_STATE
177 def_bool DMA_NONCOHERENT
178
179config NEED_SG_DMA_LENGTH
180 def_bool y
181
182source "init/Kconfig"
183
184source "kernel/Kconfig.freezer"
185
186menu "System type"
187
188#
189# Processor families
190#
191config CPU_SH2
192 bool
193
194config CPU_SH2A
195 bool
196 select CPU_SH2
197 select UNCACHED_MAPPING
198
199config CPU_SH3
200 bool
201 select CPU_HAS_INTEVT
202 select CPU_HAS_SR_RB
203 select SYS_SUPPORTS_TMU
204
205config CPU_SH4
206 bool
207 select CPU_HAS_INTEVT
208 select CPU_HAS_SR_RB
209 select CPU_HAS_FPU if !CPU_SH4AL_DSP
210 select SYS_SUPPORTS_TMU
211 select SYS_SUPPORTS_HUGETLBFS if MMU
212
213config CPU_SH4A
214 bool
215 select CPU_SH4
216
217config CPU_SH4AL_DSP
218 bool
219 select CPU_SH4A
220 select CPU_HAS_DSP
221
222config CPU_SH5
223 bool
224 select CPU_HAS_FPU
225 select SYS_SUPPORTS_TMU
226 select SYS_SUPPORTS_HUGETLBFS if MMU
227
228config CPU_SHX2
229 bool
230
231config CPU_SHX3
232 bool
233 select DMA_COHERENT
234 select SYS_SUPPORTS_SMP
235 select SYS_SUPPORTS_NUMA
236
237config ARCH_SHMOBILE
238 bool
239 select ARCH_SUSPEND_POSSIBLE
240 select PM
241 select PM_RUNTIME
242
243config CPU_HAS_PMU
244 depends on CPU_SH4 || CPU_SH4A
245 default y
246 bool
247
248if SUPERH32
249
250choice
251 prompt "Processor sub-type selection"
252
253#
254# Processor subtypes
255#
256
257# SH-2 Processor Support
258
259config CPU_SUBTYPE_SH7619
260 bool "Support SH7619 processor"
261 select CPU_SH2
262 select SYS_SUPPORTS_CMT
263
264# SH-2A Processor Support
265
266config CPU_SUBTYPE_SH7201
267 bool "Support SH7201 processor"
268 select CPU_SH2A
269 select CPU_HAS_FPU
270 select SYS_SUPPORTS_MTU2
271
272config CPU_SUBTYPE_SH7203
273 bool "Support SH7203 processor"
274 select CPU_SH2A
275 select CPU_HAS_FPU
276 select SYS_SUPPORTS_CMT
277 select SYS_SUPPORTS_MTU2
278 select ARCH_WANT_OPTIONAL_GPIOLIB
279
280config CPU_SUBTYPE_SH7206
281 bool "Support SH7206 processor"
282 select CPU_SH2A
283 select SYS_SUPPORTS_CMT
284 select SYS_SUPPORTS_MTU2
285
286config CPU_SUBTYPE_SH7263
287 bool "Support SH7263 processor"
288 select CPU_SH2A
289 select CPU_HAS_FPU
290 select SYS_SUPPORTS_CMT
291 select SYS_SUPPORTS_MTU2
292
293config CPU_SUBTYPE_MXG
294 bool "Support MX-G processor"
295 select CPU_SH2A
296 select SYS_SUPPORTS_MTU2
297 help
298 Select MX-G if running on an R8A03022BG part.
299
300# SH-3 Processor Support
301
302config CPU_SUBTYPE_SH7705
303 bool "Support SH7705 processor"
304 select CPU_SH3
305
306config CPU_SUBTYPE_SH7706
307 bool "Support SH7706 processor"
308 select CPU_SH3
309 help
310 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
311
312config CPU_SUBTYPE_SH7707
313 bool "Support SH7707 processor"
314 select CPU_SH3
315 help
316 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
317
318config CPU_SUBTYPE_SH7708
319 bool "Support SH7708 processor"
320 select CPU_SH3
321 help
322 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
323 if you have a 100 Mhz SH-3 HD6417708R CPU.
324
325config CPU_SUBTYPE_SH7709
326 bool "Support SH7709 processor"
327 select CPU_SH3
328 help
329 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
330
331config CPU_SUBTYPE_SH7710
332 bool "Support SH7710 processor"
333 select CPU_SH3
334 select CPU_HAS_DSP
335 help
336 Select SH7710 if you have a SH3-DSP SH7710 CPU.
337
338config CPU_SUBTYPE_SH7712
339 bool "Support SH7712 processor"
340 select CPU_SH3
341 select CPU_HAS_DSP
342 help
343 Select SH7712 if you have a SH3-DSP SH7712 CPU.
344
345config CPU_SUBTYPE_SH7720
346 bool "Support SH7720 processor"
347 select CPU_SH3
348 select CPU_HAS_DSP
349 select SYS_SUPPORTS_CMT
350 select ARCH_WANT_OPTIONAL_GPIOLIB
351 select USB_ARCH_HAS_OHCI
352 select USB_OHCI_SH if USB_OHCI_HCD
353 help
354 Select SH7720 if you have a SH3-DSP SH7720 CPU.
355
356config CPU_SUBTYPE_SH7721
357 bool "Support SH7721 processor"
358 select CPU_SH3
359 select CPU_HAS_DSP
360 select SYS_SUPPORTS_CMT
361 select USB_ARCH_HAS_OHCI
362 select USB_OHCI_SH if USB_OHCI_HCD
363 help
364 Select SH7721 if you have a SH3-DSP SH7721 CPU.
365
366# SH-4 Processor Support
367
368config CPU_SUBTYPE_SH7750
369 bool "Support SH7750 processor"
370 select CPU_SH4
371 help
372 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
373
374config CPU_SUBTYPE_SH7091
375 bool "Support SH7091 processor"
376 select CPU_SH4
377 help
378 Select SH7091 if you have an SH-4 based Sega device (such as
379 the Dreamcast, Naomi, and Naomi 2).
380
381config CPU_SUBTYPE_SH7750R
382 bool "Support SH7750R processor"
383 select CPU_SH4
384
385config CPU_SUBTYPE_SH7750S
386 bool "Support SH7750S processor"
387 select CPU_SH4
388
389config CPU_SUBTYPE_SH7751
390 bool "Support SH7751 processor"
391 select CPU_SH4
392 help
393 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
394 or if you have a HD6417751R CPU.
395
396config CPU_SUBTYPE_SH7751R
397 bool "Support SH7751R processor"
398 select CPU_SH4
399
400config CPU_SUBTYPE_SH7760
401 bool "Support SH7760 processor"
402 select CPU_SH4
403
404config CPU_SUBTYPE_SH4_202
405 bool "Support SH4-202 processor"
406 select CPU_SH4
407
408# SH-4A Processor Support
409
410config CPU_SUBTYPE_SH7723
411 bool "Support SH7723 processor"
412 select CPU_SH4A
413 select CPU_SHX2
414 select ARCH_SHMOBILE
415 select ARCH_SPARSEMEM_ENABLE
416 select SYS_SUPPORTS_CMT
417 select ARCH_WANT_OPTIONAL_GPIOLIB
418 help
419 Select SH7723 if you have an SH-MobileR2 CPU.
420
421config CPU_SUBTYPE_SH7724
422 bool "Support SH7724 processor"
423 select CPU_SH4A
424 select CPU_SHX2
425 select ARCH_SHMOBILE
426 select ARCH_SPARSEMEM_ENABLE
427 select SYS_SUPPORTS_CMT
428 select ARCH_WANT_OPTIONAL_GPIOLIB
429 help
430 Select SH7724 if you have an SH-MobileR2R CPU.
431
432config CPU_SUBTYPE_SH7757
433 bool "Support SH7757 processor"
434 select CPU_SH4A
435 select CPU_SHX2
436 select ARCH_WANT_OPTIONAL_GPIOLIB
437 select USB_ARCH_HAS_OHCI
438 select USB_ARCH_HAS_EHCI
439 help
440 Select SH7757 if you have a SH4A SH7757 CPU.
441
442config CPU_SUBTYPE_SH7763
443 bool "Support SH7763 processor"
444 select CPU_SH4A
445 select USB_ARCH_HAS_OHCI
446 select USB_OHCI_SH if USB_OHCI_HCD
447 help
448 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
449
450config CPU_SUBTYPE_SH7770
451 bool "Support SH7770 processor"
452 select CPU_SH4A
453
454config CPU_SUBTYPE_SH7780
455 bool "Support SH7780 processor"
456 select CPU_SH4A
457
458config CPU_SUBTYPE_SH7785
459 bool "Support SH7785 processor"
460 select CPU_SH4A
461 select CPU_SHX2
462 select ARCH_SPARSEMEM_ENABLE
463 select SYS_SUPPORTS_NUMA
464 select ARCH_WANT_OPTIONAL_GPIOLIB
465
466config CPU_SUBTYPE_SH7786
467 bool "Support SH7786 processor"
468 select CPU_SH4A
469 select CPU_SHX3
470 select CPU_HAS_PTEAEX
471 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
472 select ARCH_WANT_OPTIONAL_GPIOLIB
473 select USB_ARCH_HAS_OHCI
474 select USB_OHCI_SH if USB_OHCI_HCD
475 select USB_ARCH_HAS_EHCI
476 select USB_EHCI_SH if USB_EHCI_HCD
477
478config CPU_SUBTYPE_SHX3
479 bool "Support SH-X3 processor"
480 select CPU_SH4A
481 select CPU_SHX3
482 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
483 select ARCH_REQUIRE_GPIOLIB
484
485# SH4AL-DSP Processor Support
486
487config CPU_SUBTYPE_SH7343
488 bool "Support SH7343 processor"
489 select CPU_SH4AL_DSP
490 select ARCH_SHMOBILE
491 select SYS_SUPPORTS_CMT
492
493config CPU_SUBTYPE_SH7722
494 bool "Support SH7722 processor"
495 select CPU_SH4AL_DSP
496 select CPU_SHX2
497 select ARCH_SHMOBILE
498 select ARCH_SPARSEMEM_ENABLE
499 select SYS_SUPPORTS_NUMA
500 select SYS_SUPPORTS_CMT
501 select ARCH_WANT_OPTIONAL_GPIOLIB
502
503config CPU_SUBTYPE_SH7366
504 bool "Support SH7366 processor"
505 select CPU_SH4AL_DSP
506 select CPU_SHX2
507 select ARCH_SHMOBILE
508 select ARCH_SPARSEMEM_ENABLE
509 select SYS_SUPPORTS_NUMA
510 select SYS_SUPPORTS_CMT
511
512endchoice
513
514endif
515
516if SUPERH64
517
518choice
519 prompt "Processor sub-type selection"
520
521# SH-5 Processor Support
522
523config CPU_SUBTYPE_SH5_101
524 bool "Support SH5-101 processor"
525 select CPU_SH5
526
527config CPU_SUBTYPE_SH5_103
528 bool "Support SH5-103 processor"
529 select CPU_SH5
530
531endchoice
532
533endif
534
535source "arch/sh/mm/Kconfig"
536
537source "arch/sh/Kconfig.cpu"
538
539source "arch/sh/boards/Kconfig"
540
541menu "Timer and clock configuration"
542
543config SH_TIMER_TMU
544 bool "TMU timer driver"
545 depends on SYS_SUPPORTS_TMU
546 default y
547 help
548 This enables the build of the TMU timer driver.
549
550config SH_TIMER_CMT
551 bool "CMT timer driver"
552 depends on SYS_SUPPORTS_CMT
553 default y
554 help
555 This enables build of the CMT timer driver.
556
557config SH_TIMER_MTU2
558 bool "MTU2 timer driver"
559 depends on SYS_SUPPORTS_MTU2
560 default y
561 help
562 This enables build of the MTU2 timer driver.
563
564config SH_PCLK_FREQ
565 int "Peripheral clock frequency (in Hz)"
566 depends on SH_CLK_CPG_LEGACY
567 default "31250000" if CPU_SUBTYPE_SH7619
568 default "33333333" if CPU_SUBTYPE_SH7770 || \
569 CPU_SUBTYPE_SH7760 || \
570 CPU_SUBTYPE_SH7705 || \
571 CPU_SUBTYPE_SH7203 || \
572 CPU_SUBTYPE_SH7206 || \
573 CPU_SUBTYPE_SH7263 || \
574 CPU_SUBTYPE_MXG
575 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
576 default "66000000" if CPU_SUBTYPE_SH4_202
577 default "50000000"
578 help
579 This option is used to specify the peripheral clock frequency.
580 This is necessary for determining the reference clock value on
581 platforms lacking an RTC.
582
583config SH_CLK_CPG
584 def_bool y
585
586config SH_CLK_CPG_LEGACY
587 depends on SH_CLK_CPG
588 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
589 !CPU_SHX3 && !CPU_SUBTYPE_SH7757
590
591source "kernel/time/Kconfig"
592
593endmenu
594
595menu "CPU Frequency scaling"
596
597source "drivers/cpufreq/Kconfig"
598
599config SH_CPU_FREQ
600 tristate "SuperH CPU Frequency driver"
601 depends on CPU_FREQ
602 select CPU_FREQ_TABLE
603 help
604 This adds the cpufreq driver for SuperH. Any CPU that supports
605 clock rate rounding through the clock framework can use this
606 driver. While it will make the kernel slightly larger, this is
607 harmless for CPUs that don't support rate rounding. The driver
608 will also generate a notice in the boot log before disabling
609 itself if the CPU in question is not capable of rate rounding.
610
611 For details, take a look at <file:Documentation/cpu-freq>.
612
613 If unsure, say N.
614
615endmenu
616
617source "arch/sh/drivers/Kconfig"
618
619endmenu
620
621menu "Kernel features"
622
623source kernel/Kconfig.hz
624
625config KEXEC
626 bool "kexec system call (EXPERIMENTAL)"
627 depends on SUPERH32 && EXPERIMENTAL && MMU
628 help
629 kexec is a system call that implements the ability to shutdown your
630 current kernel, and to start another kernel. It is like a reboot
631 but it is independent of the system firmware. And like a reboot
632 you can start any kernel with it, not just Linux.
633
634 The name comes from the similarity to the exec system call.
635
636 It is an ongoing process to be certain the hardware in a machine
637 is properly shutdown, so do not be surprised if this code does not
638 initially work for you. It may help to enable device hotplugging
639 support. As of this writing the exact hardware interface is
640 strongly in flux, so no good recommendation can be made.
641
642config CRASH_DUMP
643 bool "kernel crash dumps (EXPERIMENTAL)"
644 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
645 help
646 Generate crash dump after being started by kexec.
647 This should be normally only set in special crash dump kernels
648 which are loaded in the main kernel with kexec-tools into
649 a specially reserved region and then later executed after
650 a crash by kdump/kexec. The crash dump kernel must be compiled
651 to a memory address not used by the main kernel using
652 MEMORY_START.
653
654 For more details see Documentation/kdump/kdump.txt
655
656config KEXEC_JUMP
657 bool "kexec jump (EXPERIMENTAL)"
658 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
659 help
660 Jump between original kernel and kexeced kernel and invoke
661 code via KEXEC
662
663config SECCOMP
664 bool "Enable seccomp to safely compute untrusted bytecode"
665 depends on PROC_FS
666 help
667 This kernel feature is useful for number crunching applications
668 that may need to compute untrusted bytecode during their
669 execution. By using pipes or other transports made available to
670 the process as file descriptors supporting the read/write
671 syscalls, it's possible to isolate those applications in
672 their own address space using seccomp. Once seccomp is
673 enabled via prctl, it cannot be disabled and the task is only
674 allowed to execute a few safe syscalls defined by each seccomp
675 mode.
676
677 If unsure, say N.
678
679config SMP
680 bool "Symmetric multi-processing support"
681 depends on SYS_SUPPORTS_SMP
682 select USE_GENERIC_SMP_HELPERS
683 ---help---
684 This enables support for systems with more than one CPU. If you have
685 a system with only one CPU, like most personal computers, say N. If
686 you have a system with more than one CPU, say Y.
687
688 If you say N here, the kernel will run on single and multiprocessor
689 machines, but will use only one CPU of a multiprocessor machine. If
690 you say Y here, the kernel will run on many, but not all,
691 singleprocessor machines. On a singleprocessor machine, the kernel
692 will run faster if you say N here.
693
694 People using multiprocessor machines who say Y here should also say
695 Y to "Enhanced Real Time Clock Support", below.
696
697 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
698 available at <http://www.tldp.org/docs.html#howto>.
699
700 If you don't know what to do here, say N.
701
702config NR_CPUS
703 int "Maximum number of CPUs (2-32)"
704 range 2 32
705 depends on SMP
706 default "4" if CPU_SUBTYPE_SHX3
707 default "2"
708 help
709 This allows you to specify the maximum number of CPUs which this
710 kernel will support. The maximum supported value is 32 and the
711 minimum value which makes sense is 2.
712
713 This is purely to save memory - each supported CPU adds
714 approximately eight kilobytes to the kernel image.
715
716config HOTPLUG_CPU
717 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
718 depends on SMP && HOTPLUG && EXPERIMENTAL
719 help
720 Say Y here to experiment with turning CPUs off and on. CPUs
721 can be controlled through /sys/devices/system/cpu.
722
723source "kernel/Kconfig.preempt"
724
725config GUSA
726 def_bool y
727 depends on !SMP && SUPERH32
728 help
729 This enables support for gUSA (general UserSpace Atomicity).
730 This is the default implementation for both UP and non-ll/sc
731 CPUs, and is used by the libc, amongst others.
732
733 For additional information, design information can be found
734 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
735
736 This should only be disabled for special cases where alternate
737 atomicity implementations exist.
738
739config GUSA_RB
740 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
741 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
742 help
743 Enabling this option will allow the kernel to implement some
744 atomic operations using a software implementation of load-locked/
745 store-conditional (LLSC). On machines which do not have hardware
746 LLSC, this should be more efficient than the other alternative of
747 disabling interrupts around the atomic sequence.
748
749config HW_PERF_EVENTS
750 bool "Enable hardware performance counter support for perf events"
751 depends on PERF_EVENTS && CPU_HAS_PMU
752 default y
753 help
754 Enable hardware performance counter support for perf events. If
755 disabled, perf events will use software events only.
756
757source "drivers/sh/Kconfig"
758
759endmenu
760
761menu "Boot options"
762
763config ZERO_PAGE_OFFSET
764 hex
765 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
766 SH_7751_SOLUTION_ENGINE
767 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
768 default "0x00002000" if PAGE_SIZE_8KB
769 default "0x00001000"
770 help
771 This sets the default offset of zero page.
772
773config BOOT_LINK_OFFSET
774 hex
775 default "0x00210000" if SH_SHMIN
776 default "0x00400000" if SH_CAYMAN
777 default "0x00810000" if SH_7780_SOLUTION_ENGINE
778 default "0x009e0000" if SH_TITAN
779 default "0x01800000" if SH_SDK7780
780 default "0x02000000" if SH_EDOSK7760
781 default "0x00800000"
782 help
783 This option allows you to set the link address offset of the zImage.
784 This can be useful if you are on a board which has a small amount of
785 memory.
786
787config ENTRY_OFFSET
788 hex
789 default "0x00001000" if PAGE_SIZE_4KB
790 default "0x00002000" if PAGE_SIZE_8KB
791 default "0x00004000" if PAGE_SIZE_16KB
792 default "0x00010000" if PAGE_SIZE_64KB
793 default "0x00000000"
794
795config ROMIMAGE_MMCIF
796 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
797 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
798 help
799 Say Y here to include experimental MMCIF loading code in
800 romImage. With this enabled it is possible to write the romImage
801 kernel image to an MMC card and boot the kernel straight from
802 the reset vector. At reset the processor Mask ROM will load the
803 first part of the romImage which in turn loads the rest the kernel
804 image to RAM using the MMCIF hardware block.
805
806choice
807 prompt "Kernel command line"
808 optional
809 default CMDLINE_OVERWRITE
810 help
811 Setting this option allows the kernel command line arguments
812 to be set.
813
814config CMDLINE_OVERWRITE
815 bool "Overwrite bootloader kernel arguments"
816 help
817 Given string will overwrite any arguments passed in by
818 a bootloader.
819
820config CMDLINE_EXTEND
821 bool "Extend bootloader kernel arguments"
822 help
823 Given string will be concatenated with arguments passed in
824 by a bootloader.
825
826endchoice
827
828config CMDLINE
829 string "Kernel command line arguments string"
830 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
831 default "console=ttySC1,115200"
832
833endmenu
834
835menu "Bus options"
836
837config SUPERHYWAY
838 tristate "SuperHyway Bus support"
839 depends on CPU_SUBTYPE_SH4_202
840
841config MAPLE
842 bool "Maple Bus support"
843 depends on SH_DREAMCAST
844 help
845 The Maple Bus is SEGA's serial communication bus for peripherals
846 on the Dreamcast. Without this bus support you won't be able to
847 get your Dreamcast keyboard etc to work, so most users
848 probably want to say 'Y' here, unless you are only using the
849 Dreamcast with a serial line terminal or a remote network
850 connection.
851
852config PCI
853 bool "PCI support"
854 depends on SYS_SUPPORTS_PCI
855 select PCI_DOMAINS
856 help
857 Find out whether you have a PCI motherboard. PCI is the name of a
858 bus system, i.e. the way the CPU talks to the other stuff inside
859 your box. If you have PCI, say Y, otherwise N.
860
861config PCI_DOMAINS
862 bool
863
864source "drivers/pci/pcie/Kconfig"
865
866source "drivers/pci/Kconfig"
867
868source "drivers/pcmcia/Kconfig"
869
870source "drivers/pci/hotplug/Kconfig"
871
872endmenu
873
874menu "Executable file formats"
875
876source "fs/Kconfig.binfmt"
877
878endmenu
879
880menu "Power management options (EXPERIMENTAL)"
881depends on EXPERIMENTAL
882
883source "kernel/power/Kconfig"
884
885source "drivers/cpuidle/Kconfig"
886
887endmenu
888
889source "net/Kconfig"
890
891source "drivers/Kconfig"
892
893source "fs/Kconfig"
894
895source "arch/sh/Kconfig.debug"
896
897source "security/Kconfig"
898
899source "crypto/Kconfig"
900
901source "lib/Kconfig"