Loading...
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_HAVE_CUSTOM_GPIO_H
6 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
7 select ARCH_HAS_BINFMT_FLAT if !MMU
8 select ARCH_HAS_GIGANTIC_PAGE
9 select ARCH_HAS_GCOV_PROFILE_ALL
10 select ARCH_HAS_PTE_SPECIAL
11 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
12 select ARCH_HIBERNATION_POSSIBLE if MMU
13 select ARCH_MIGHT_HAVE_PC_PARPORT
14 select ARCH_WANT_IPC_PARSE_VERSION
15 select CLKDEV_LOOKUP
16 select CPU_NO_EFFICIENT_FFS
17 select DMA_DECLARE_COHERENT
18 select GENERIC_ATOMIC64
19 select GENERIC_CLOCKEVENTS
20 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
21 select GENERIC_IDLE_POLL_SETUP
22 select GENERIC_IRQ_SHOW
23 select GENERIC_PCI_IOMAP if PCI
24 select GENERIC_SCHED_CLOCK
25 select GENERIC_STRNCPY_FROM_USER
26 select GENERIC_STRNLEN_USER
27 select GENERIC_SMP_IDLE_THREAD
28 select GUP_GET_PTE_LOW_HIGH if X2TLB
29 select HAVE_ARCH_AUDITSYSCALL
30 select HAVE_ARCH_KGDB
31 select HAVE_ARCH_SECCOMP_FILTER
32 select HAVE_ARCH_TRACEHOOK
33 select HAVE_COPY_THREAD_TLS
34 select HAVE_DEBUG_BUGVERBOSE
35 select HAVE_DEBUG_KMEMLEAK
36 select HAVE_DYNAMIC_FTRACE
37 select HAVE_FAST_GUP if MMU
38 select HAVE_FUNCTION_GRAPH_TRACER
39 select HAVE_FUNCTION_TRACER
40 select HAVE_FUTEX_CMPXCHG if FUTEX
41 select HAVE_FTRACE_MCOUNT_RECORD
42 select HAVE_HW_BREAKPOINT
43 select HAVE_IDE if HAS_IOPORT_MAP
44 select HAVE_IOREMAP_PROT if MMU && !X2TLB
45 select HAVE_KERNEL_BZIP2
46 select HAVE_KERNEL_GZIP
47 select HAVE_KERNEL_LZMA
48 select HAVE_KERNEL_LZO
49 select HAVE_KERNEL_XZ
50 select HAVE_KPROBES
51 select HAVE_KRETPROBES
52 select HAVE_MIXED_BREAKPOINTS_REGS
53 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
54 select HAVE_NMI
55 select HAVE_OPROFILE
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_STACKPROTECTOR
61 select HAVE_SYSCALL_TRACEPOINTS
62 select IRQ_FORCED_THREADING
63 select MAY_HAVE_SPARSE_IRQ
64 select MODULES_USE_ELF_RELA
65 select NEED_SG_DMA_LENGTH
66 select NO_DMA if !MMU && !DMA_COHERENT
67 select NO_GENERIC_PCI_IOPORT_MAP if PCI
68 select OLD_SIGACTION
69 select OLD_SIGSUSPEND
70 select PCI_DOMAINS if PCI
71 select PERF_EVENTS
72 select PERF_USE_VMALLOC
73 select RTC_LIB
74 select SPARSE_IRQ
75 help
76 The SuperH is a RISC processor targeted for use in embedded systems
77 and consumer electronics; it was also used in the Sega Dreamcast
78 gaming console. The SuperH port has a home page at
79 <http://www.linux-sh.org/>.
80
81config GENERIC_BUG
82 def_bool y
83 depends on BUG
84
85config GENERIC_HWEIGHT
86 def_bool y
87
88config GENERIC_CALIBRATE_DELAY
89 bool
90
91config GENERIC_LOCKBREAK
92 def_bool y
93 depends on SMP && PREEMPTION
94
95config ARCH_SUSPEND_POSSIBLE
96 def_bool n
97
98config ARCH_HIBERNATION_POSSIBLE
99 def_bool n
100
101config SYS_SUPPORTS_APM_EMULATION
102 bool
103 select ARCH_SUSPEND_POSSIBLE
104
105config SYS_SUPPORTS_HUGETLBFS
106 bool
107
108config SYS_SUPPORTS_SMP
109 bool
110
111config SYS_SUPPORTS_NUMA
112 bool
113
114config STACKTRACE_SUPPORT
115 def_bool y
116
117config LOCKDEP_SUPPORT
118 def_bool y
119
120config ARCH_HAS_ILOG2_U32
121 def_bool n
122
123config ARCH_HAS_ILOG2_U64
124 def_bool n
125
126config NO_IOPORT_MAP
127 def_bool !PCI
128 depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
129 !SH_SOLUTION_ENGINE
130
131config IO_TRAPPED
132 bool
133
134config SWAP_IO_SPACE
135 bool
136
137config DMA_COHERENT
138 bool
139
140config DMA_NONCOHERENT
141 def_bool !NO_DMA && !DMA_COHERENT
142 select ARCH_HAS_DMA_PREP_COHERENT
143 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
144 select DMA_DIRECT_REMAP
145
146config PGTABLE_LEVELS
147 default 3 if X2TLB
148 default 2
149
150menu "System type"
151
152#
153# Processor families
154#
155config CPU_SH2
156 bool
157 select SH_INTC
158
159config CPU_SH2A
160 bool
161 select CPU_SH2
162 select UNCACHED_MAPPING
163
164config CPU_J2
165 bool
166 select CPU_SH2
167 select OF
168 select OF_EARLY_FLATTREE
169
170config CPU_SH3
171 bool
172 select CPU_HAS_INTEVT
173 select CPU_HAS_SR_RB
174 select SH_INTC
175 select SYS_SUPPORTS_SH_TMU
176
177config CPU_SH4
178 bool
179 select CPU_HAS_INTEVT
180 select CPU_HAS_SR_RB
181 select CPU_HAS_FPU if !CPU_SH4AL_DSP
182 select SH_INTC
183 select SYS_SUPPORTS_SH_TMU
184 select SYS_SUPPORTS_HUGETLBFS if MMU
185
186config CPU_SH4A
187 bool
188 select CPU_SH4
189
190config CPU_SH4AL_DSP
191 bool
192 select CPU_SH4A
193 select CPU_HAS_DSP
194
195config CPU_SHX2
196 bool
197
198config CPU_SHX3
199 bool
200 select DMA_COHERENT
201 select SYS_SUPPORTS_SMP
202 select SYS_SUPPORTS_NUMA
203
204config ARCH_SHMOBILE
205 bool
206 select ARCH_SUSPEND_POSSIBLE
207 select PM
208
209config CPU_HAS_PMU
210 depends on CPU_SH4 || CPU_SH4A
211 default y
212 bool
213
214choice
215 prompt "Processor sub-type selection"
216
217#
218# Processor subtypes
219#
220
221# SH-2 Processor Support
222
223config CPU_SUBTYPE_SH7619
224 bool "Support SH7619 processor"
225 select CPU_SH2
226 select SYS_SUPPORTS_SH_CMT
227
228config CPU_SUBTYPE_J2
229 bool "Support J2 processor"
230 select CPU_J2
231 select SYS_SUPPORTS_SMP
232 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
233
234# SH-2A Processor Support
235
236config CPU_SUBTYPE_SH7201
237 bool "Support SH7201 processor"
238 select CPU_SH2A
239 select CPU_HAS_FPU
240 select SYS_SUPPORTS_SH_MTU2
241
242config CPU_SUBTYPE_SH7203
243 bool "Support SH7203 processor"
244 select CPU_SH2A
245 select CPU_HAS_FPU
246 select SYS_SUPPORTS_SH_CMT
247 select SYS_SUPPORTS_SH_MTU2
248 select PINCTRL
249
250config CPU_SUBTYPE_SH7206
251 bool "Support SH7206 processor"
252 select CPU_SH2A
253 select SYS_SUPPORTS_SH_CMT
254 select SYS_SUPPORTS_SH_MTU2
255
256config CPU_SUBTYPE_SH7263
257 bool "Support SH7263 processor"
258 select CPU_SH2A
259 select CPU_HAS_FPU
260 select SYS_SUPPORTS_SH_CMT
261 select SYS_SUPPORTS_SH_MTU2
262
263config CPU_SUBTYPE_SH7264
264 bool "Support SH7264 processor"
265 select CPU_SH2A
266 select CPU_HAS_FPU
267 select SYS_SUPPORTS_SH_CMT
268 select SYS_SUPPORTS_SH_MTU2
269 select PINCTRL
270
271config CPU_SUBTYPE_SH7269
272 bool "Support SH7269 processor"
273 select CPU_SH2A
274 select CPU_HAS_FPU
275 select SYS_SUPPORTS_SH_CMT
276 select SYS_SUPPORTS_SH_MTU2
277 select PINCTRL
278
279config CPU_SUBTYPE_MXG
280 bool "Support MX-G processor"
281 select CPU_SH2A
282 select SYS_SUPPORTS_SH_MTU2
283 help
284 Select MX-G if running on an R8A03022BG part.
285
286# SH-3 Processor Support
287
288config CPU_SUBTYPE_SH7705
289 bool "Support SH7705 processor"
290 select CPU_SH3
291
292config CPU_SUBTYPE_SH7706
293 bool "Support SH7706 processor"
294 select CPU_SH3
295 help
296 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
297
298config CPU_SUBTYPE_SH7707
299 bool "Support SH7707 processor"
300 select CPU_SH3
301 help
302 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
303
304config CPU_SUBTYPE_SH7708
305 bool "Support SH7708 processor"
306 select CPU_SH3
307 help
308 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
309 if you have a 100 Mhz SH-3 HD6417708R CPU.
310
311config CPU_SUBTYPE_SH7709
312 bool "Support SH7709 processor"
313 select CPU_SH3
314 help
315 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
316
317config CPU_SUBTYPE_SH7710
318 bool "Support SH7710 processor"
319 select CPU_SH3
320 select CPU_HAS_DSP
321 help
322 Select SH7710 if you have a SH3-DSP SH7710 CPU.
323
324config CPU_SUBTYPE_SH7712
325 bool "Support SH7712 processor"
326 select CPU_SH3
327 select CPU_HAS_DSP
328 help
329 Select SH7712 if you have a SH3-DSP SH7712 CPU.
330
331config CPU_SUBTYPE_SH7720
332 bool "Support SH7720 processor"
333 select CPU_SH3
334 select CPU_HAS_DSP
335 select SYS_SUPPORTS_SH_CMT
336 select USB_OHCI_SH if USB_OHCI_HCD
337 select PINCTRL
338 help
339 Select SH7720 if you have a SH3-DSP SH7720 CPU.
340
341config CPU_SUBTYPE_SH7721
342 bool "Support SH7721 processor"
343 select CPU_SH3
344 select CPU_HAS_DSP
345 select SYS_SUPPORTS_SH_CMT
346 select USB_OHCI_SH if USB_OHCI_HCD
347 help
348 Select SH7721 if you have a SH3-DSP SH7721 CPU.
349
350# SH-4 Processor Support
351
352config CPU_SUBTYPE_SH7750
353 bool "Support SH7750 processor"
354 select CPU_SH4
355 help
356 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
357
358config CPU_SUBTYPE_SH7091
359 bool "Support SH7091 processor"
360 select CPU_SH4
361 help
362 Select SH7091 if you have an SH-4 based Sega device (such as
363 the Dreamcast, Naomi, and Naomi 2).
364
365config CPU_SUBTYPE_SH7750R
366 bool "Support SH7750R processor"
367 select CPU_SH4
368
369config CPU_SUBTYPE_SH7750S
370 bool "Support SH7750S processor"
371 select CPU_SH4
372
373config CPU_SUBTYPE_SH7751
374 bool "Support SH7751 processor"
375 select CPU_SH4
376 help
377 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
378 or if you have a HD6417751R CPU.
379
380config CPU_SUBTYPE_SH7751R
381 bool "Support SH7751R processor"
382 select CPU_SH4
383
384config CPU_SUBTYPE_SH7760
385 bool "Support SH7760 processor"
386 select CPU_SH4
387
388config CPU_SUBTYPE_SH4_202
389 bool "Support SH4-202 processor"
390 select CPU_SH4
391
392# SH-4A Processor Support
393
394config CPU_SUBTYPE_SH7723
395 bool "Support SH7723 processor"
396 select CPU_SH4A
397 select CPU_SHX2
398 select ARCH_SHMOBILE
399 select ARCH_SPARSEMEM_ENABLE
400 select SYS_SUPPORTS_SH_CMT
401 select PINCTRL
402 help
403 Select SH7723 if you have an SH-MobileR2 CPU.
404
405config CPU_SUBTYPE_SH7724
406 bool "Support SH7724 processor"
407 select CPU_SH4A
408 select CPU_SHX2
409 select ARCH_SHMOBILE
410 select ARCH_SPARSEMEM_ENABLE
411 select SYS_SUPPORTS_SH_CMT
412 select PINCTRL
413 help
414 Select SH7724 if you have an SH-MobileR2R CPU.
415
416config CPU_SUBTYPE_SH7734
417 bool "Support SH7734 processor"
418 select CPU_SH4A
419 select CPU_SHX2
420 select PINCTRL
421 help
422 Select SH7734 if you have a SH4A SH7734 CPU.
423
424config CPU_SUBTYPE_SH7757
425 bool "Support SH7757 processor"
426 select CPU_SH4A
427 select CPU_SHX2
428 select PINCTRL
429 help
430 Select SH7757 if you have a SH4A SH7757 CPU.
431
432config CPU_SUBTYPE_SH7763
433 bool "Support SH7763 processor"
434 select CPU_SH4A
435 select USB_OHCI_SH if USB_OHCI_HCD
436 help
437 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
438
439config CPU_SUBTYPE_SH7770
440 bool "Support SH7770 processor"
441 select CPU_SH4A
442
443config CPU_SUBTYPE_SH7780
444 bool "Support SH7780 processor"
445 select CPU_SH4A
446
447config CPU_SUBTYPE_SH7785
448 bool "Support SH7785 processor"
449 select CPU_SH4A
450 select CPU_SHX2
451 select ARCH_SPARSEMEM_ENABLE
452 select SYS_SUPPORTS_NUMA
453 select PINCTRL
454
455config CPU_SUBTYPE_SH7786
456 bool "Support SH7786 processor"
457 select CPU_SH4A
458 select CPU_SHX3
459 select CPU_HAS_PTEAEX
460 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
461 select USB_OHCI_SH if USB_OHCI_HCD
462 select USB_EHCI_SH if USB_EHCI_HCD
463 select PINCTRL
464
465config CPU_SUBTYPE_SHX3
466 bool "Support SH-X3 processor"
467 select CPU_SH4A
468 select CPU_SHX3
469 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
470 select GPIOLIB
471 select PINCTRL
472
473# SH4AL-DSP Processor Support
474
475config CPU_SUBTYPE_SH7343
476 bool "Support SH7343 processor"
477 select CPU_SH4AL_DSP
478 select ARCH_SHMOBILE
479 select SYS_SUPPORTS_SH_CMT
480
481config CPU_SUBTYPE_SH7722
482 bool "Support SH7722 processor"
483 select CPU_SH4AL_DSP
484 select CPU_SHX2
485 select ARCH_SHMOBILE
486 select ARCH_SPARSEMEM_ENABLE
487 select SYS_SUPPORTS_NUMA
488 select SYS_SUPPORTS_SH_CMT
489 select PINCTRL
490
491config CPU_SUBTYPE_SH7366
492 bool "Support SH7366 processor"
493 select CPU_SH4AL_DSP
494 select CPU_SHX2
495 select ARCH_SHMOBILE
496 select ARCH_SPARSEMEM_ENABLE
497 select SYS_SUPPORTS_NUMA
498 select SYS_SUPPORTS_SH_CMT
499
500endchoice
501
502source "arch/sh/mm/Kconfig"
503
504source "arch/sh/Kconfig.cpu"
505
506source "arch/sh/boards/Kconfig"
507
508menu "Timer and clock configuration"
509
510config SH_PCLK_FREQ
511 int "Peripheral clock frequency (in Hz)"
512 depends on SH_CLK_CPG_LEGACY
513 default "31250000" if CPU_SUBTYPE_SH7619
514 default "33333333" if CPU_SUBTYPE_SH7770 || \
515 CPU_SUBTYPE_SH7760 || \
516 CPU_SUBTYPE_SH7705 || \
517 CPU_SUBTYPE_SH7203 || \
518 CPU_SUBTYPE_SH7206 || \
519 CPU_SUBTYPE_SH7263 || \
520 CPU_SUBTYPE_MXG
521 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
522 default "66000000" if CPU_SUBTYPE_SH4_202
523 default "50000000"
524 help
525 This option is used to specify the peripheral clock frequency.
526 This is necessary for determining the reference clock value on
527 platforms lacking an RTC.
528
529config SH_CLK_CPG
530 def_bool y
531
532config SH_CLK_CPG_LEGACY
533 depends on SH_CLK_CPG
534 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
535 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
536 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
537 !CPU_SUBTYPE_SH7269
538
539endmenu
540
541menu "CPU Frequency scaling"
542source "drivers/cpufreq/Kconfig"
543endmenu
544
545source "arch/sh/drivers/Kconfig"
546
547endmenu
548
549menu "Kernel features"
550
551source "kernel/Kconfig.hz"
552
553config KEXEC
554 bool "kexec system call (EXPERIMENTAL)"
555 depends on MMU
556 select KEXEC_CORE
557 help
558 kexec is a system call that implements the ability to shutdown your
559 current kernel, and to start another kernel. It is like a reboot
560 but it is independent of the system firmware. And like a reboot
561 you can start any kernel with it, not just Linux.
562
563 The name comes from the similarity to the exec system call.
564
565 It is an ongoing process to be certain the hardware in a machine
566 is properly shutdown, so do not be surprised if this code does not
567 initially work for you. As of this writing the exact hardware
568 interface is strongly in flux, so no good recommendation can be
569 made.
570
571config CRASH_DUMP
572 bool "kernel crash dumps (EXPERIMENTAL)"
573 depends on BROKEN_ON_SMP
574 help
575 Generate crash dump after being started by kexec.
576 This should be normally only set in special crash dump kernels
577 which are loaded in the main kernel with kexec-tools into
578 a specially reserved region and then later executed after
579 a crash by kdump/kexec. The crash dump kernel must be compiled
580 to a memory address not used by the main kernel using
581 PHYSICAL_START.
582
583 For more details see Documentation/admin-guide/kdump/kdump.rst
584
585config KEXEC_JUMP
586 bool "kexec jump (EXPERIMENTAL)"
587 depends on KEXEC && HIBERNATION
588 help
589 Jump between original kernel and kexeced kernel and invoke
590 code via KEXEC
591
592config PHYSICAL_START
593 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
594 default MEMORY_START
595 help
596 This gives the physical address where the kernel is loaded
597 and is ordinarily the same as MEMORY_START.
598
599 Different values are primarily used in the case of kexec on panic
600 where the fail safe kernel needs to run at a different address
601 than the panic-ed kernel.
602
603config SECCOMP
604 bool "Enable seccomp to safely compute untrusted bytecode"
605 depends on PROC_FS
606 help
607 This kernel feature is useful for number crunching applications
608 that may need to compute untrusted bytecode during their
609 execution. By using pipes or other transports made available to
610 the process as file descriptors supporting the read/write
611 syscalls, it's possible to isolate those applications in
612 their own address space using seccomp. Once seccomp is
613 enabled via prctl, it cannot be disabled and the task is only
614 allowed to execute a few safe syscalls defined by each seccomp
615 mode.
616
617 If unsure, say N.
618
619config SMP
620 bool "Symmetric multi-processing support"
621 depends on SYS_SUPPORTS_SMP
622 help
623 This enables support for systems with more than one CPU. If you have
624 a system with only one CPU, say N. If you have a system with more
625 than one CPU, say Y.
626
627 If you say N here, the kernel will run on uni- and multiprocessor
628 machines, but will use only one CPU of a multiprocessor machine. If
629 you say Y here, the kernel will run on many, but not all,
630 uniprocessor machines. On a uniprocessor machine, the kernel
631 will run faster if you say N here.
632
633 People using multiprocessor machines who say Y here should also say
634 Y to "Enhanced Real Time Clock Support", below.
635
636 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
637 available at <https://www.tldp.org/docs.html#howto>.
638
639 If you don't know what to do here, say N.
640
641config NR_CPUS
642 int "Maximum number of CPUs (2-32)"
643 range 2 32
644 depends on SMP
645 default "4" if CPU_SUBTYPE_SHX3
646 default "2"
647 help
648 This allows you to specify the maximum number of CPUs which this
649 kernel will support. The maximum supported value is 32 and the
650 minimum value which makes sense is 2.
651
652 This is purely to save memory - each supported CPU adds
653 approximately eight kilobytes to the kernel image.
654
655config HOTPLUG_CPU
656 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
657 depends on SMP
658 help
659 Say Y here to experiment with turning CPUs off and on. CPUs
660 can be controlled through /sys/devices/system/cpu.
661
662config GUSA
663 def_bool y
664 depends on !SMP
665 help
666 This enables support for gUSA (general UserSpace Atomicity).
667 This is the default implementation for both UP and non-ll/sc
668 CPUs, and is used by the libc, amongst others.
669
670 For additional information, design information can be found
671 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
672
673 This should only be disabled for special cases where alternate
674 atomicity implementations exist.
675
676config GUSA_RB
677 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
678 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
679 help
680 Enabling this option will allow the kernel to implement some
681 atomic operations using a software implementation of load-locked/
682 store-conditional (LLSC). On machines which do not have hardware
683 LLSC, this should be more efficient than the other alternative of
684 disabling interrupts around the atomic sequence.
685
686config HW_PERF_EVENTS
687 bool "Enable hardware performance counter support for perf events"
688 depends on PERF_EVENTS && CPU_HAS_PMU
689 default y
690 help
691 Enable hardware performance counter support for perf events. If
692 disabled, perf events will use software events only.
693
694source "drivers/sh/Kconfig"
695
696endmenu
697
698menu "Boot options"
699
700config USE_BUILTIN_DTB
701 bool "Use builtin DTB"
702 default n
703 depends on SH_DEVICE_TREE
704 help
705 Link a device tree blob for particular hardware into the kernel,
706 suppressing use of the DTB pointer provided by the bootloader.
707 This option should only be used with legacy bootloaders that are
708 not capable of providing a DTB to the kernel, or for experimental
709 hardware without stable device tree bindings.
710
711config BUILTIN_DTB_SOURCE
712 string "Source file for builtin DTB"
713 default ""
714 depends on USE_BUILTIN_DTB
715 help
716 Base name (without suffix, relative to arch/sh/boot/dts) for the
717 a DTS file that will be used to produce the DTB linked into the
718 kernel.
719
720config ZERO_PAGE_OFFSET
721 hex
722 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
723 SH_7751_SOLUTION_ENGINE
724 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
725 default "0x00002000" if PAGE_SIZE_8KB
726 default "0x00001000"
727 help
728 This sets the default offset of zero page.
729
730config BOOT_LINK_OFFSET
731 hex
732 default "0x00210000" if SH_SHMIN
733 default "0x00810000" if SH_7780_SOLUTION_ENGINE
734 default "0x009e0000" if SH_TITAN
735 default "0x01800000" if SH_SDK7780
736 default "0x02000000" if SH_EDOSK7760
737 default "0x00800000"
738 help
739 This option allows you to set the link address offset of the zImage.
740 This can be useful if you are on a board which has a small amount of
741 memory.
742
743config ENTRY_OFFSET
744 hex
745 default "0x00001000" if PAGE_SIZE_4KB
746 default "0x00002000" if PAGE_SIZE_8KB
747 default "0x00004000" if PAGE_SIZE_16KB
748 default "0x00010000" if PAGE_SIZE_64KB
749 default "0x00000000"
750
751config ROMIMAGE_MMCIF
752 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
753 depends on CPU_SUBTYPE_SH7724
754 help
755 Say Y here to include experimental MMCIF loading code in
756 romImage. With this enabled it is possible to write the romImage
757 kernel image to an MMC card and boot the kernel straight from
758 the reset vector. At reset the processor Mask ROM will load the
759 first part of the romImage which in turn loads the rest the kernel
760 image to RAM using the MMCIF hardware block.
761
762choice
763 prompt "Kernel command line"
764 optional
765 default CMDLINE_OVERWRITE
766 help
767 Setting this option allows the kernel command line arguments
768 to be set.
769
770config CMDLINE_OVERWRITE
771 bool "Overwrite bootloader kernel arguments"
772 help
773 Given string will overwrite any arguments passed in by
774 a bootloader.
775
776config CMDLINE_EXTEND
777 bool "Extend bootloader kernel arguments"
778 help
779 Given string will be concatenated with arguments passed in
780 by a bootloader.
781
782endchoice
783
784config CMDLINE
785 string "Kernel command line arguments string"
786 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
787 default "console=ttySC1,115200"
788
789endmenu
790
791menu "Bus options"
792
793config SUPERHYWAY
794 tristate "SuperHyway Bus support"
795 depends on CPU_SUBTYPE_SH4_202
796
797config MAPLE
798 bool "Maple Bus support"
799 depends on SH_DREAMCAST
800 help
801 The Maple Bus is SEGA's serial communication bus for peripherals
802 on the Dreamcast. Without this bus support you won't be able to
803 get your Dreamcast keyboard etc to work, so most users
804 probably want to say 'Y' here, unless you are only using the
805 Dreamcast with a serial line terminal or a remote network
806 connection.
807
808endmenu
809
810menu "Power management options (EXPERIMENTAL)"
811
812source "kernel/power/Kconfig"
813
814source "drivers/cpuidle/Kconfig"
815
816endmenu