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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"
1# SPDX-License-Identifier: GPL-2.0
2config SUPERH
3 def_bool y
4 select ARCH_32BIT_OFF_T
5 select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU
6 select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU
7 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
8 select ARCH_HAS_BINFMT_FLAT if !MMU
9 select ARCH_HAS_CPU_FINALIZE_INIT
10 select ARCH_HAS_CURRENT_STACK_POINTER
11 select ARCH_HAS_GIGANTIC_PAGE
12 select ARCH_HAS_GCOV_PROFILE_ALL
13 select ARCH_HAS_PTE_SPECIAL
14 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
15 select ARCH_HIBERNATION_POSSIBLE if MMU
16 select ARCH_MIGHT_HAVE_PC_PARPORT
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select CPU_NO_EFFICIENT_FFS
19 select DMA_DECLARE_COHERENT
20 select GENERIC_ATOMIC64
21 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
22 select GENERIC_IDLE_POLL_SETUP
23 select GENERIC_IRQ_SHOW
24 select GENERIC_LIB_ASHLDI3
25 select GENERIC_LIB_ASHRDI3
26 select GENERIC_LIB_LSHRDI3
27 select GENERIC_PCI_IOMAP if PCI
28 select GENERIC_SCHED_CLOCK
29 select GENERIC_SMP_IDLE_THREAD
30 select GUP_GET_PXX_LOW_HIGH if X2TLB
31 select HAS_IOPORT if HAS_IOPORT_MAP
32 select GENERIC_IOREMAP if MMU
33 select HAVE_ARCH_AUDITSYSCALL
34 select HAVE_ARCH_KGDB
35 select HAVE_ARCH_SECCOMP_FILTER
36 select HAVE_ARCH_TRACEHOOK
37 select HAVE_DEBUG_BUGVERBOSE
38 select HAVE_DEBUG_KMEMLEAK
39 select HAVE_DYNAMIC_FTRACE
40 select HAVE_FAST_GUP if MMU
41 select HAVE_FUNCTION_GRAPH_TRACER
42 select HAVE_FUNCTION_TRACER
43 select HAVE_FTRACE_MCOUNT_RECORD
44 select HAVE_HW_BREAKPOINT
45 select HAVE_IOREMAP_PROT if MMU && !X2TLB
46 select HAVE_KERNEL_BZIP2
47 select HAVE_KERNEL_GZIP
48 select HAVE_KERNEL_LZMA
49 select HAVE_KERNEL_LZO
50 select HAVE_KERNEL_XZ
51 select HAVE_KPROBES
52 select HAVE_KRETPROBES
53 select HAVE_MIXED_BREAKPOINTS_REGS
54 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
55 select HAVE_NMI
56 select HAVE_PATA_PLATFORM
57 select HAVE_PERF_EVENTS
58 select HAVE_REGS_AND_STACK_ACCESS_API
59 select HAVE_UID16
60 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
61 select HAVE_STACKPROTECTOR
62 select HAVE_SYSCALL_TRACEPOINTS
63 select IRQ_FORCED_THREADING
64 select LOCK_MM_AND_FIND_VMA
65 select MODULES_USE_ELF_RELA
66 select NEED_SG_DMA_LENGTH
67 select NO_DMA if !MMU && !DMA_COHERENT
68 select NO_GENERIC_PCI_IOPORT_MAP if PCI
69 select OLD_SIGACTION
70 select OLD_SIGSUSPEND
71 select PCI_DOMAINS if PCI
72 select PERF_EVENTS
73 select PERF_USE_VMALLOC
74 select RTC_LIB
75 select SPARSE_IRQ
76 select TRACE_IRQFLAGS_SUPPORT
77 help
78 The SuperH is a RISC processor targeted for use in embedded systems
79 and consumer electronics; it was also used in the Sega Dreamcast
80 gaming console. The SuperH port has a home page at
81 <http://www.linux-sh.org/>.
82
83config GENERIC_BUG
84 def_bool y
85 depends on BUG
86
87config GENERIC_HWEIGHT
88 def_bool y
89
90config GENERIC_CALIBRATE_DELAY
91 bool
92
93config GENERIC_LOCKBREAK
94 def_bool y
95 depends on SMP && PREEMPTION
96
97config ARCH_SUSPEND_POSSIBLE
98 def_bool n
99
100config ARCH_HIBERNATION_POSSIBLE
101 def_bool n
102
103config SYS_SUPPORTS_APM_EMULATION
104 bool
105 select ARCH_SUSPEND_POSSIBLE
106
107config SYS_SUPPORTS_SMP
108 bool
109
110config SYS_SUPPORTS_NUMA
111 bool
112
113config STACKTRACE_SUPPORT
114 def_bool y
115
116config LOCKDEP_SUPPORT
117 def_bool y
118
119config ARCH_HAS_ILOG2_U32
120 def_bool n
121
122config ARCH_HAS_ILOG2_U64
123 def_bool n
124
125config NO_IOPORT_MAP
126 def_bool !PCI
127 depends on !SH_SHMIN && !SH_HP6XX && !SH_SOLUTION_ENGINE
128
129config IO_TRAPPED
130 bool
131
132config SWAP_IO_SPACE
133 bool
134
135config DMA_COHERENT
136 bool
137
138config DMA_NONCOHERENT
139 def_bool !NO_DMA && !DMA_COHERENT
140 select ARCH_HAS_DMA_PREP_COHERENT
141 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
142 select DMA_DIRECT_REMAP
143
144config PGTABLE_LEVELS
145 default 3 if X2TLB
146 default 2
147
148menu "System type"
149
150#
151# Processor families
152#
153config CPU_SH2
154 bool
155 select SH_INTC
156
157config CPU_SH2A
158 bool
159 select CPU_SH2
160 select UNCACHED_MAPPING
161
162config CPU_J2
163 bool
164 select CPU_SH2
165 select OF
166 select OF_EARLY_FLATTREE
167
168config CPU_SH3
169 bool
170 select CPU_HAS_INTEVT
171 select CPU_HAS_SR_RB
172 select SH_INTC
173 select SYS_SUPPORTS_SH_TMU
174
175config CPU_SH4
176 bool
177 select ARCH_SUPPORTS_HUGETLBFS if MMU
178 select CPU_HAS_INTEVT
179 select CPU_HAS_SR_RB
180 select CPU_HAS_FPU if !CPU_SH4AL_DSP
181 select SH_INTC
182 select SYS_SUPPORTS_SH_TMU
183
184config CPU_SH4A
185 bool
186 select CPU_SH4
187
188config CPU_SH4AL_DSP
189 bool
190 select CPU_SH4A
191 select CPU_HAS_DSP
192
193config CPU_SHX2
194 bool
195
196config CPU_SHX3
197 bool
198 select DMA_COHERENT
199 select SYS_SUPPORTS_SMP
200 select SYS_SUPPORTS_NUMA
201
202config ARCH_SHMOBILE
203 bool
204 select ARCH_SUSPEND_POSSIBLE
205 select PM
206
207config CPU_HAS_PMU
208 depends on CPU_SH4 || CPU_SH4A
209 default y
210 bool
211
212choice
213 prompt "Processor sub-type selection"
214
215#
216# Processor subtypes
217#
218
219# SH-2 Processor Support
220
221config CPU_SUBTYPE_SH7619
222 bool "Support SH7619 processor"
223 select CPU_SH2
224 select SYS_SUPPORTS_SH_CMT
225
226config CPU_SUBTYPE_J2
227 bool "Support J2 processor"
228 select CPU_J2
229 select SYS_SUPPORTS_SMP
230 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
231
232# SH-2A Processor Support
233
234config CPU_SUBTYPE_SH7201
235 bool "Support SH7201 processor"
236 select CPU_SH2A
237 select CPU_HAS_FPU
238 select SYS_SUPPORTS_SH_MTU2
239
240config CPU_SUBTYPE_SH7203
241 bool "Support SH7203 processor"
242 select CPU_SH2A
243 select CPU_HAS_FPU
244 select SYS_SUPPORTS_SH_CMT
245 select SYS_SUPPORTS_SH_MTU2
246 select PINCTRL
247
248config CPU_SUBTYPE_SH7206
249 bool "Support SH7206 processor"
250 select CPU_SH2A
251 select SYS_SUPPORTS_SH_CMT
252 select SYS_SUPPORTS_SH_MTU2
253
254config CPU_SUBTYPE_SH7263
255 bool "Support SH7263 processor"
256 select CPU_SH2A
257 select CPU_HAS_FPU
258 select SYS_SUPPORTS_SH_CMT
259 select SYS_SUPPORTS_SH_MTU2
260
261config CPU_SUBTYPE_SH7264
262 bool "Support SH7264 processor"
263 select CPU_SH2A
264 select CPU_HAS_FPU
265 select SYS_SUPPORTS_SH_CMT
266 select SYS_SUPPORTS_SH_MTU2
267 select PINCTRL
268
269config CPU_SUBTYPE_SH7269
270 bool "Support SH7269 processor"
271 select CPU_SH2A
272 select CPU_HAS_FPU
273 select SYS_SUPPORTS_SH_CMT
274 select SYS_SUPPORTS_SH_MTU2
275 select PINCTRL
276
277config CPU_SUBTYPE_MXG
278 bool "Support MX-G processor"
279 select CPU_SH2A
280 select SYS_SUPPORTS_SH_MTU2
281 help
282 Select MX-G if running on an R8A03022BG part.
283
284# SH-3 Processor Support
285
286config CPU_SUBTYPE_SH7705
287 bool "Support SH7705 processor"
288 select CPU_SH3
289
290config CPU_SUBTYPE_SH7706
291 bool "Support SH7706 processor"
292 select CPU_SH3
293 help
294 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
295
296config CPU_SUBTYPE_SH7707
297 bool "Support SH7707 processor"
298 select CPU_SH3
299 help
300 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
301
302config CPU_SUBTYPE_SH7708
303 bool "Support SH7708 processor"
304 select CPU_SH3
305 help
306 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
307 if you have a 100 Mhz SH-3 HD6417708R CPU.
308
309config CPU_SUBTYPE_SH7709
310 bool "Support SH7709 processor"
311 select CPU_SH3
312 help
313 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
314
315config CPU_SUBTYPE_SH7710
316 bool "Support SH7710 processor"
317 select CPU_SH3
318 select CPU_HAS_DSP
319 help
320 Select SH7710 if you have a SH3-DSP SH7710 CPU.
321
322config CPU_SUBTYPE_SH7712
323 bool "Support SH7712 processor"
324 select CPU_SH3
325 select CPU_HAS_DSP
326 help
327 Select SH7712 if you have a SH3-DSP SH7712 CPU.
328
329config CPU_SUBTYPE_SH7720
330 bool "Support SH7720 processor"
331 select CPU_SH3
332 select CPU_HAS_DSP
333 select SYS_SUPPORTS_SH_CMT
334 select USB_OHCI_SH if USB_OHCI_HCD
335 select PINCTRL
336 help
337 Select SH7720 if you have a SH3-DSP SH7720 CPU.
338
339config CPU_SUBTYPE_SH7721
340 bool "Support SH7721 processor"
341 select CPU_SH3
342 select CPU_HAS_DSP
343 select SYS_SUPPORTS_SH_CMT
344 select USB_OHCI_SH if USB_OHCI_HCD
345 help
346 Select SH7721 if you have a SH3-DSP SH7721 CPU.
347
348# SH-4 Processor Support
349
350config CPU_SUBTYPE_SH7750
351 bool "Support SH7750 processor"
352 select CPU_SH4
353 help
354 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
355
356config CPU_SUBTYPE_SH7091
357 bool "Support SH7091 processor"
358 select CPU_SH4
359 help
360 Select SH7091 if you have an SH-4 based Sega device (such as
361 the Dreamcast, Naomi, and Naomi 2).
362
363config CPU_SUBTYPE_SH7750R
364 bool "Support SH7750R processor"
365 select CPU_SH4
366
367config CPU_SUBTYPE_SH7750S
368 bool "Support SH7750S processor"
369 select CPU_SH4
370
371config CPU_SUBTYPE_SH7751
372 bool "Support SH7751 processor"
373 select CPU_SH4
374 help
375 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
376 or if you have a HD6417751R CPU.
377
378config CPU_SUBTYPE_SH7751R
379 bool "Support SH7751R processor"
380 select CPU_SH4
381
382config CPU_SUBTYPE_SH7760
383 bool "Support SH7760 processor"
384 select CPU_SH4
385
386# SH-4A Processor Support
387
388config CPU_SUBTYPE_SH7723
389 bool "Support SH7723 processor"
390 select CPU_SH4A
391 select CPU_SHX2
392 select ARCH_SHMOBILE
393 select ARCH_SPARSEMEM_ENABLE
394 select SYS_SUPPORTS_SH_CMT
395 select PINCTRL
396 help
397 Select SH7723 if you have an SH-MobileR2 CPU.
398
399config CPU_SUBTYPE_SH7724
400 bool "Support SH7724 processor"
401 select CPU_SH4A
402 select CPU_SHX2
403 select ARCH_SHMOBILE
404 select ARCH_SPARSEMEM_ENABLE
405 select SYS_SUPPORTS_SH_CMT
406 select PINCTRL
407 help
408 Select SH7724 if you have an SH-MobileR2R CPU.
409
410config CPU_SUBTYPE_SH7734
411 bool "Support SH7734 processor"
412 select CPU_SH4A
413 select CPU_SHX2
414 select PINCTRL
415 help
416 Select SH7734 if you have a SH4A SH7734 CPU.
417
418config CPU_SUBTYPE_SH7757
419 bool "Support SH7757 processor"
420 select CPU_SH4A
421 select CPU_SHX2
422 select PINCTRL
423 help
424 Select SH7757 if you have a SH4A SH7757 CPU.
425
426config CPU_SUBTYPE_SH7763
427 bool "Support SH7763 processor"
428 select CPU_SH4A
429 select USB_OHCI_SH if USB_OHCI_HCD
430 help
431 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
432
433config CPU_SUBTYPE_SH7770
434 bool "Support SH7770 processor"
435 select CPU_SH4A
436
437config CPU_SUBTYPE_SH7780
438 bool "Support SH7780 processor"
439 select CPU_SH4A
440
441config CPU_SUBTYPE_SH7785
442 bool "Support SH7785 processor"
443 select CPU_SH4A
444 select CPU_SHX2
445 select ARCH_SPARSEMEM_ENABLE
446 select SYS_SUPPORTS_NUMA
447 select PINCTRL
448
449config CPU_SUBTYPE_SH7786
450 bool "Support SH7786 processor"
451 select CPU_SH4A
452 select CPU_SHX3
453 select CPU_HAS_PTEAEX
454 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
455 select USB_OHCI_SH if USB_OHCI_HCD
456 select USB_EHCI_SH if USB_EHCI_HCD
457 select PINCTRL
458
459config CPU_SUBTYPE_SHX3
460 bool "Support SH-X3 processor"
461 select CPU_SH4A
462 select CPU_SHX3
463 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
464 select GPIOLIB
465 select PINCTRL
466
467# SH4AL-DSP Processor Support
468
469config CPU_SUBTYPE_SH7343
470 bool "Support SH7343 processor"
471 select CPU_SH4AL_DSP
472 select ARCH_SHMOBILE
473 select SYS_SUPPORTS_SH_CMT
474
475config CPU_SUBTYPE_SH7722
476 bool "Support SH7722 processor"
477 select CPU_SH4AL_DSP
478 select CPU_SHX2
479 select ARCH_SHMOBILE
480 select ARCH_SPARSEMEM_ENABLE
481 select SYS_SUPPORTS_NUMA
482 select SYS_SUPPORTS_SH_CMT
483 select PINCTRL
484
485config CPU_SUBTYPE_SH7366
486 bool "Support SH7366 processor"
487 select CPU_SH4AL_DSP
488 select CPU_SHX2
489 select ARCH_SHMOBILE
490 select ARCH_SPARSEMEM_ENABLE
491 select SYS_SUPPORTS_NUMA
492 select SYS_SUPPORTS_SH_CMT
493
494endchoice
495
496source "arch/sh/mm/Kconfig"
497
498source "arch/sh/Kconfig.cpu"
499
500source "arch/sh/boards/Kconfig"
501
502menu "Timer and clock configuration"
503
504config SH_PCLK_FREQ
505 int "Peripheral clock frequency (in Hz)"
506 depends on SH_CLK_CPG_LEGACY
507 default "31250000" if CPU_SUBTYPE_SH7619
508 default "33333333" if CPU_SUBTYPE_SH7770 || \
509 CPU_SUBTYPE_SH7760 || \
510 CPU_SUBTYPE_SH7705 || \
511 CPU_SUBTYPE_SH7203 || \
512 CPU_SUBTYPE_SH7206 || \
513 CPU_SUBTYPE_SH7263 || \
514 CPU_SUBTYPE_MXG
515 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
516 default "50000000"
517 help
518 This option is used to specify the peripheral clock frequency.
519 This is necessary for determining the reference clock value on
520 platforms lacking an RTC.
521
522config SH_CLK_CPG
523 def_bool y
524
525config SH_CLK_CPG_LEGACY
526 depends on SH_CLK_CPG
527 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
528 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
529 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
530 !CPU_SUBTYPE_SH7269
531
532endmenu
533
534menu "CPU Frequency scaling"
535source "drivers/cpufreq/Kconfig"
536endmenu
537
538source "arch/sh/drivers/Kconfig"
539
540endmenu
541
542menu "Kernel features"
543
544source "kernel/Kconfig.hz"
545
546config ARCH_SUPPORTS_KEXEC
547 def_bool MMU
548
549config ARCH_SUPPORTS_CRASH_DUMP
550 def_bool BROKEN_ON_SMP
551
552config ARCH_SUPPORTS_KEXEC_JUMP
553 def_bool y
554
555config PHYSICAL_START
556 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
557 default MEMORY_START
558 help
559 This gives the physical address where the kernel is loaded
560 and is ordinarily the same as MEMORY_START.
561
562 Different values are primarily used in the case of kexec on panic
563 where the fail safe kernel needs to run at a different address
564 than the panic-ed kernel.
565
566config SMP
567 bool "Symmetric multi-processing support"
568 depends on SYS_SUPPORTS_SMP
569 help
570 This enables support for systems with more than one CPU. If you have
571 a system with only one CPU, say N. If you have a system with more
572 than one CPU, say Y.
573
574 If you say N here, the kernel will run on uni- and multiprocessor
575 machines, but will use only one CPU of a multiprocessor machine. If
576 you say Y here, the kernel will run on many, but not all,
577 uniprocessor machines. On a uniprocessor machine, the kernel
578 will run faster if you say N here.
579
580 People using multiprocessor machines who say Y here should also say
581 Y to "Enhanced Real Time Clock Support", below.
582
583 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
584 available at <https://www.tldp.org/docs.html#howto>.
585
586 If you don't know what to do here, say N.
587
588config NR_CPUS
589 int "Maximum number of CPUs (2-32)"
590 range 2 32
591 depends on SMP
592 default "4" if CPU_SUBTYPE_SHX3
593 default "2"
594 help
595 This allows you to specify the maximum number of CPUs which this
596 kernel will support. The maximum supported value is 32 and the
597 minimum value which makes sense is 2.
598
599 This is purely to save memory - each supported CPU adds
600 approximately eight kilobytes to the kernel image.
601
602config HOTPLUG_CPU
603 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
604 depends on SMP
605 help
606 Say Y here to experiment with turning CPUs off and on. CPUs
607 can be controlled through /sys/devices/system/cpu.
608
609config GUSA
610 def_bool y
611 depends on !SMP
612 help
613 This enables support for gUSA (general UserSpace Atomicity).
614 This is the default implementation for both UP and non-ll/sc
615 CPUs, and is used by the libc, amongst others.
616
617 For additional information, design information can be found
618 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
619
620 This should only be disabled for special cases where alternate
621 atomicity implementations exist.
622
623config GUSA_RB
624 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
625 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
626 help
627 Enabling this option will allow the kernel to implement some
628 atomic operations using a software implementation of load-locked/
629 store-conditional (LLSC). On machines which do not have hardware
630 LLSC, this should be more efficient than the other alternative of
631 disabling interrupts around the atomic sequence.
632
633config HW_PERF_EVENTS
634 bool "Enable hardware performance counter support for perf events"
635 depends on PERF_EVENTS && CPU_HAS_PMU
636 default y
637 help
638 Enable hardware performance counter support for perf events. If
639 disabled, perf events will use software events only.
640
641source "drivers/sh/Kconfig"
642
643endmenu
644
645menu "Boot options"
646
647config USE_BUILTIN_DTB
648 bool "Use builtin DTB"
649 default n
650 depends on SH_DEVICE_TREE
651 help
652 Link a device tree blob for particular hardware into the kernel,
653 suppressing use of the DTB pointer provided by the bootloader.
654 This option should only be used with legacy bootloaders that are
655 not capable of providing a DTB to the kernel, or for experimental
656 hardware without stable device tree bindings.
657
658config BUILTIN_DTB_SOURCE
659 string "Source file for builtin DTB"
660 default ""
661 depends on USE_BUILTIN_DTB
662 help
663 Base name (without suffix, relative to arch/sh/boot/dts) for the
664 a DTS file that will be used to produce the DTB linked into the
665 kernel.
666
667config ZERO_PAGE_OFFSET
668 hex
669 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
670 SH_7751_SOLUTION_ENGINE
671 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
672 default "0x00002000" if PAGE_SIZE_8KB
673 default "0x00001000"
674 help
675 This sets the default offset of zero page.
676
677config BOOT_LINK_OFFSET
678 hex
679 default "0x00210000" if SH_SHMIN
680 default "0x00810000" if SH_7780_SOLUTION_ENGINE
681 default "0x009e0000" if SH_TITAN
682 default "0x01800000" if SH_SDK7780
683 default "0x02000000" if SH_EDOSK7760
684 default "0x00800000"
685 help
686 This option allows you to set the link address offset of the zImage.
687 This can be useful if you are on a board which has a small amount of
688 memory.
689
690config ENTRY_OFFSET
691 hex
692 default "0x00001000" if PAGE_SIZE_4KB
693 default "0x00002000" if PAGE_SIZE_8KB
694 default "0x00004000" if PAGE_SIZE_16KB
695 default "0x00010000" if PAGE_SIZE_64KB
696 default "0x00000000"
697
698config ROMIMAGE_MMCIF
699 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
700 depends on CPU_SUBTYPE_SH7724
701 help
702 Say Y here to include experimental MMCIF loading code in
703 romImage. With this enabled it is possible to write the romImage
704 kernel image to an MMC card and boot the kernel straight from
705 the reset vector. At reset the processor Mask ROM will load the
706 first part of the romImage which in turn loads the rest the kernel
707 image to RAM using the MMCIF hardware block.
708
709choice
710 prompt "Kernel command line"
711 optional
712 default CMDLINE_OVERWRITE
713 help
714 Setting this option allows the kernel command line arguments
715 to be set.
716
717config CMDLINE_OVERWRITE
718 bool "Overwrite bootloader kernel arguments"
719 help
720 Given string will overwrite any arguments passed in by
721 a bootloader.
722
723config CMDLINE_EXTEND
724 bool "Extend bootloader kernel arguments"
725 help
726 Given string will be concatenated with arguments passed in
727 by a bootloader.
728
729endchoice
730
731config CMDLINE
732 string "Kernel command line arguments string"
733 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
734 default "console=ttySC1,115200"
735
736endmenu
737
738menu "Bus options"
739
740config MAPLE
741 bool "Maple Bus support"
742 depends on SH_DREAMCAST
743 help
744 The Maple Bus is SEGA's serial communication bus for peripherals
745 on the Dreamcast. Without this bus support you won't be able to
746 get your Dreamcast keyboard etc to work, so most users
747 probably want to say 'Y' here, unless you are only using the
748 Dreamcast with a serial line terminal or a remote network
749 connection.
750
751endmenu
752
753menu "Power management options (EXPERIMENTAL)"
754
755source "kernel/power/Kconfig"
756
757source "drivers/cpuidle/Kconfig"
758
759endmenu