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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_HAS_BINFMT_FLAT if !MMU
5 select ARCH_HAS_PTE_SPECIAL
6 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
7 select ARCH_MIGHT_HAVE_PC_PARPORT
8 select HAVE_PATA_PLATFORM
9 select CLKDEV_LOOKUP
10 select DMA_DECLARE_COHERENT
11 select HAVE_IDE if HAS_IOPORT_MAP
12 select HAVE_MEMBLOCK_NODE_MAP
13 select HAVE_OPROFILE
14 select HAVE_ARCH_TRACEHOOK
15 select HAVE_PERF_EVENTS
16 select HAVE_DEBUG_BUGVERBOSE
17 select HAVE_FAST_GUP if MMU
18 select ARCH_HAVE_CUSTOM_GPIO_H
19 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
20 select ARCH_HAS_GCOV_PROFILE_ALL
21 select PERF_USE_VMALLOC
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_KERNEL_GZIP
24 select CPU_NO_EFFICIENT_FFS
25 select HAVE_KERNEL_BZIP2
26 select HAVE_KERNEL_LZMA
27 select HAVE_KERNEL_XZ
28 select HAVE_KERNEL_LZO
29 select HAVE_UID16
30 select ARCH_WANT_IPC_PARSE_VERSION
31 select HAVE_SYSCALL_TRACEPOINTS
32 select HAVE_REGS_AND_STACK_ACCESS_API
33 select MAY_HAVE_SPARSE_IRQ
34 select IRQ_FORCED_THREADING
35 select RTC_LIB
36 select GENERIC_ATOMIC64
37 select GENERIC_IRQ_SHOW
38 select GENERIC_SMP_IDLE_THREAD
39 select GENERIC_IDLE_POLL_SETUP
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
42 select GENERIC_PCI_IOMAP if PCI
43 select GENERIC_SCHED_CLOCK
44 select GENERIC_STRNCPY_FROM_USER
45 select GENERIC_STRNLEN_USER
46 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
47 select MODULES_USE_ELF_RELA
48 select NO_GENERIC_PCI_IOPORT_MAP if PCI
49 select OLD_SIGSUSPEND
50 select OLD_SIGACTION
51 select PCI_DOMAINS if PCI
52 select HAVE_ARCH_AUDITSYSCALL
53 select HAVE_FUTEX_CMPXCHG if FUTEX
54 select HAVE_NMI
55 select NEED_SG_DMA_LENGTH
56 select ARCH_HAS_GIGANTIC_PAGE
57
58 help
59 The SuperH is a RISC processor targeted for use in embedded systems
60 and consumer electronics; it was also used in the Sega Dreamcast
61 gaming console. The SuperH port has a home page at
62 <http://www.linux-sh.org/>.
63
64config SUPERH32
65 def_bool "$(ARCH)" = "sh"
66 select ARCH_32BIT_OFF_T
67 select GUP_GET_PTE_LOW_HIGH if X2TLB
68 select HAVE_KPROBES
69 select HAVE_KRETPROBES
70 select HAVE_IOREMAP_PROT if MMU && !X2TLB
71 select HAVE_FUNCTION_TRACER
72 select HAVE_FTRACE_MCOUNT_RECORD
73 select HAVE_DYNAMIC_FTRACE
74 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
75 select ARCH_WANT_IPC_PARSE_VERSION
76 select HAVE_FUNCTION_GRAPH_TRACER
77 select HAVE_ARCH_KGDB
78 select HAVE_HW_BREAKPOINT
79 select HAVE_MIXED_BREAKPOINTS_REGS
80 select PERF_EVENTS
81 select ARCH_HIBERNATION_POSSIBLE if MMU
82 select SPARSE_IRQ
83 select HAVE_STACKPROTECTOR
84
85config SUPERH64
86 def_bool "$(ARCH)" = "sh64"
87 select HAVE_EXIT_THREAD
88 select KALLSYMS
89
90config ARCH_DEFCONFIG
91 string
92 default "arch/sh/configs/shx3_defconfig" if SUPERH32
93 default "arch/sh/configs/cayman_defconfig" if SUPERH64
94
95config GENERIC_BUG
96 def_bool y
97 depends on BUG && SUPERH32
98
99config GENERIC_CSUM
100 def_bool y
101 depends on SUPERH64
102
103config GENERIC_HWEIGHT
104 def_bool y
105
106config GENERIC_CALIBRATE_DELAY
107 bool
108
109config GENERIC_LOCKBREAK
110 def_bool y
111 depends on SMP && PREEMPT
112
113config ARCH_SUSPEND_POSSIBLE
114 def_bool n
115
116config ARCH_HIBERNATION_POSSIBLE
117 def_bool n
118
119config SYS_SUPPORTS_APM_EMULATION
120 bool
121 select ARCH_SUSPEND_POSSIBLE
122
123config SYS_SUPPORTS_HUGETLBFS
124 bool
125
126config SYS_SUPPORTS_SMP
127 bool
128
129config SYS_SUPPORTS_NUMA
130 bool
131
132config STACKTRACE_SUPPORT
133 def_bool y
134
135config LOCKDEP_SUPPORT
136 def_bool y
137
138config ARCH_HAS_ILOG2_U32
139 def_bool n
140
141config ARCH_HAS_ILOG2_U64
142 def_bool n
143
144config NO_IOPORT_MAP
145 def_bool !PCI
146 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
147 !SH_HP6XX && !SH_SOLUTION_ENGINE
148
149config IO_TRAPPED
150 bool
151
152config SWAP_IO_SPACE
153 bool
154
155config DMA_COHERENT
156 bool
157
158config DMA_NONCOHERENT
159 def_bool !DMA_COHERENT
160 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
161
162config PGTABLE_LEVELS
163 default 3 if X2TLB
164 default 2
165
166menu "System type"
167
168#
169# Processor families
170#
171config CPU_SH2
172 bool
173 select SH_INTC
174
175config CPU_SH2A
176 bool
177 select CPU_SH2
178 select UNCACHED_MAPPING
179
180config CPU_J2
181 bool
182 select CPU_SH2
183 select OF
184 select OF_EARLY_FLATTREE
185
186config CPU_SH3
187 bool
188 select CPU_HAS_INTEVT
189 select CPU_HAS_SR_RB
190 select SH_INTC
191 select SYS_SUPPORTS_SH_TMU
192
193config CPU_SH4
194 bool
195 select CPU_HAS_INTEVT
196 select CPU_HAS_SR_RB
197 select CPU_HAS_FPU if !CPU_SH4AL_DSP
198 select SH_INTC
199 select SYS_SUPPORTS_SH_TMU
200 select SYS_SUPPORTS_HUGETLBFS if MMU
201
202config CPU_SH4A
203 bool
204 select CPU_SH4
205
206config CPU_SH4AL_DSP
207 bool
208 select CPU_SH4A
209 select CPU_HAS_DSP
210
211config CPU_SH5
212 bool
213 select CPU_HAS_FPU
214 select SYS_SUPPORTS_SH_TMU
215 select SYS_SUPPORTS_HUGETLBFS if MMU
216
217config CPU_SHX2
218 bool
219
220config CPU_SHX3
221 bool
222 select DMA_COHERENT
223 select SYS_SUPPORTS_SMP
224 select SYS_SUPPORTS_NUMA
225
226config ARCH_SHMOBILE
227 bool
228 select ARCH_SUSPEND_POSSIBLE
229 select PM
230
231config CPU_HAS_PMU
232 depends on CPU_SH4 || CPU_SH4A
233 default y
234 bool
235
236if SUPERH32
237
238choice
239 prompt "Processor sub-type selection"
240
241#
242# Processor subtypes
243#
244
245# SH-2 Processor Support
246
247config CPU_SUBTYPE_SH7619
248 bool "Support SH7619 processor"
249 select CPU_SH2
250 select SYS_SUPPORTS_SH_CMT
251
252config CPU_SUBTYPE_J2
253 bool "Support J2 processor"
254 select CPU_J2
255 select SYS_SUPPORTS_SMP
256 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
257
258# SH-2A Processor Support
259
260config CPU_SUBTYPE_SH7201
261 bool "Support SH7201 processor"
262 select CPU_SH2A
263 select CPU_HAS_FPU
264 select SYS_SUPPORTS_SH_MTU2
265
266config CPU_SUBTYPE_SH7203
267 bool "Support SH7203 processor"
268 select CPU_SH2A
269 select CPU_HAS_FPU
270 select SYS_SUPPORTS_SH_CMT
271 select SYS_SUPPORTS_SH_MTU2
272 select PINCTRL
273
274config CPU_SUBTYPE_SH7206
275 bool "Support SH7206 processor"
276 select CPU_SH2A
277 select SYS_SUPPORTS_SH_CMT
278 select SYS_SUPPORTS_SH_MTU2
279
280config CPU_SUBTYPE_SH7263
281 bool "Support SH7263 processor"
282 select CPU_SH2A
283 select CPU_HAS_FPU
284 select SYS_SUPPORTS_SH_CMT
285 select SYS_SUPPORTS_SH_MTU2
286
287config CPU_SUBTYPE_SH7264
288 bool "Support SH7264 processor"
289 select CPU_SH2A
290 select CPU_HAS_FPU
291 select SYS_SUPPORTS_SH_CMT
292 select SYS_SUPPORTS_SH_MTU2
293 select PINCTRL
294
295config CPU_SUBTYPE_SH7269
296 bool "Support SH7269 processor"
297 select CPU_SH2A
298 select CPU_HAS_FPU
299 select SYS_SUPPORTS_SH_CMT
300 select SYS_SUPPORTS_SH_MTU2
301 select PINCTRL
302
303config CPU_SUBTYPE_MXG
304 bool "Support MX-G processor"
305 select CPU_SH2A
306 select SYS_SUPPORTS_SH_MTU2
307 help
308 Select MX-G if running on an R8A03022BG part.
309
310# SH-3 Processor Support
311
312config CPU_SUBTYPE_SH7705
313 bool "Support SH7705 processor"
314 select CPU_SH3
315
316config CPU_SUBTYPE_SH7706
317 bool "Support SH7706 processor"
318 select CPU_SH3
319 help
320 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
321
322config CPU_SUBTYPE_SH7707
323 bool "Support SH7707 processor"
324 select CPU_SH3
325 help
326 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
327
328config CPU_SUBTYPE_SH7708
329 bool "Support SH7708 processor"
330 select CPU_SH3
331 help
332 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
333 if you have a 100 Mhz SH-3 HD6417708R CPU.
334
335config CPU_SUBTYPE_SH7709
336 bool "Support SH7709 processor"
337 select CPU_SH3
338 help
339 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
340
341config CPU_SUBTYPE_SH7710
342 bool "Support SH7710 processor"
343 select CPU_SH3
344 select CPU_HAS_DSP
345 help
346 Select SH7710 if you have a SH3-DSP SH7710 CPU.
347
348config CPU_SUBTYPE_SH7712
349 bool "Support SH7712 processor"
350 select CPU_SH3
351 select CPU_HAS_DSP
352 help
353 Select SH7712 if you have a SH3-DSP SH7712 CPU.
354
355config CPU_SUBTYPE_SH7720
356 bool "Support SH7720 processor"
357 select CPU_SH3
358 select CPU_HAS_DSP
359 select SYS_SUPPORTS_SH_CMT
360 select USB_OHCI_SH if USB_OHCI_HCD
361 select PINCTRL
362 help
363 Select SH7720 if you have a SH3-DSP SH7720 CPU.
364
365config CPU_SUBTYPE_SH7721
366 bool "Support SH7721 processor"
367 select CPU_SH3
368 select CPU_HAS_DSP
369 select SYS_SUPPORTS_SH_CMT
370 select USB_OHCI_SH if USB_OHCI_HCD
371 help
372 Select SH7721 if you have a SH3-DSP SH7721 CPU.
373
374# SH-4 Processor Support
375
376config CPU_SUBTYPE_SH7750
377 bool "Support SH7750 processor"
378 select CPU_SH4
379 help
380 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
381
382config CPU_SUBTYPE_SH7091
383 bool "Support SH7091 processor"
384 select CPU_SH4
385 help
386 Select SH7091 if you have an SH-4 based Sega device (such as
387 the Dreamcast, Naomi, and Naomi 2).
388
389config CPU_SUBTYPE_SH7750R
390 bool "Support SH7750R processor"
391 select CPU_SH4
392
393config CPU_SUBTYPE_SH7750S
394 bool "Support SH7750S processor"
395 select CPU_SH4
396
397config CPU_SUBTYPE_SH7751
398 bool "Support SH7751 processor"
399 select CPU_SH4
400 help
401 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
402 or if you have a HD6417751R CPU.
403
404config CPU_SUBTYPE_SH7751R
405 bool "Support SH7751R processor"
406 select CPU_SH4
407
408config CPU_SUBTYPE_SH7760
409 bool "Support SH7760 processor"
410 select CPU_SH4
411
412config CPU_SUBTYPE_SH4_202
413 bool "Support SH4-202 processor"
414 select CPU_SH4
415
416# SH-4A Processor Support
417
418config CPU_SUBTYPE_SH7723
419 bool "Support SH7723 processor"
420 select CPU_SH4A
421 select CPU_SHX2
422 select ARCH_SHMOBILE
423 select ARCH_SPARSEMEM_ENABLE
424 select SYS_SUPPORTS_SH_CMT
425 select PINCTRL
426 help
427 Select SH7723 if you have an SH-MobileR2 CPU.
428
429config CPU_SUBTYPE_SH7724
430 bool "Support SH7724 processor"
431 select CPU_SH4A
432 select CPU_SHX2
433 select ARCH_SHMOBILE
434 select ARCH_SPARSEMEM_ENABLE
435 select SYS_SUPPORTS_SH_CMT
436 select PINCTRL
437 help
438 Select SH7724 if you have an SH-MobileR2R CPU.
439
440config CPU_SUBTYPE_SH7734
441 bool "Support SH7734 processor"
442 select CPU_SH4A
443 select CPU_SHX2
444 select PINCTRL
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 PINCTRL
453 help
454 Select SH7757 if you have a SH4A SH7757 CPU.
455
456config CPU_SUBTYPE_SH7763
457 bool "Support SH7763 processor"
458 select CPU_SH4A
459 select USB_OHCI_SH if USB_OHCI_HCD
460 help
461 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
462
463config CPU_SUBTYPE_SH7770
464 bool "Support SH7770 processor"
465 select CPU_SH4A
466
467config CPU_SUBTYPE_SH7780
468 bool "Support SH7780 processor"
469 select CPU_SH4A
470
471config CPU_SUBTYPE_SH7785
472 bool "Support SH7785 processor"
473 select CPU_SH4A
474 select CPU_SHX2
475 select ARCH_SPARSEMEM_ENABLE
476 select SYS_SUPPORTS_NUMA
477 select PINCTRL
478
479config CPU_SUBTYPE_SH7786
480 bool "Support SH7786 processor"
481 select CPU_SH4A
482 select CPU_SHX3
483 select CPU_HAS_PTEAEX
484 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
485 select USB_OHCI_SH if USB_OHCI_HCD
486 select USB_EHCI_SH if USB_EHCI_HCD
487 select PINCTRL
488
489config CPU_SUBTYPE_SHX3
490 bool "Support SH-X3 processor"
491 select CPU_SH4A
492 select CPU_SHX3
493 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
494 select GPIOLIB
495 select PINCTRL
496
497# SH4AL-DSP Processor Support
498
499config CPU_SUBTYPE_SH7343
500 bool "Support SH7343 processor"
501 select CPU_SH4AL_DSP
502 select ARCH_SHMOBILE
503 select SYS_SUPPORTS_SH_CMT
504
505config CPU_SUBTYPE_SH7722
506 bool "Support SH7722 processor"
507 select CPU_SH4AL_DSP
508 select CPU_SHX2
509 select ARCH_SHMOBILE
510 select ARCH_SPARSEMEM_ENABLE
511 select SYS_SUPPORTS_NUMA
512 select SYS_SUPPORTS_SH_CMT
513 select PINCTRL
514
515config CPU_SUBTYPE_SH7366
516 bool "Support SH7366 processor"
517 select CPU_SH4AL_DSP
518 select CPU_SHX2
519 select ARCH_SHMOBILE
520 select ARCH_SPARSEMEM_ENABLE
521 select SYS_SUPPORTS_NUMA
522 select SYS_SUPPORTS_SH_CMT
523
524endchoice
525
526endif
527
528if SUPERH64
529
530choice
531 prompt "Processor sub-type selection"
532
533# SH-5 Processor Support
534
535config CPU_SUBTYPE_SH5_101
536 bool "Support SH5-101 processor"
537 select CPU_SH5
538
539config CPU_SUBTYPE_SH5_103
540 bool "Support SH5-103 processor"
541 select CPU_SH5
542
543endchoice
544
545endif
546
547source "arch/sh/mm/Kconfig"
548
549source "arch/sh/Kconfig.cpu"
550
551source "arch/sh/boards/Kconfig"
552
553menu "Timer and clock configuration"
554
555config SH_PCLK_FREQ
556 int "Peripheral clock frequency (in Hz)"
557 depends on SH_CLK_CPG_LEGACY
558 default "31250000" if CPU_SUBTYPE_SH7619
559 default "33333333" if CPU_SUBTYPE_SH7770 || \
560 CPU_SUBTYPE_SH7760 || \
561 CPU_SUBTYPE_SH7705 || \
562 CPU_SUBTYPE_SH7203 || \
563 CPU_SUBTYPE_SH7206 || \
564 CPU_SUBTYPE_SH7263 || \
565 CPU_SUBTYPE_MXG
566 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
567 default "66000000" if CPU_SUBTYPE_SH4_202
568 default "50000000"
569 help
570 This option is used to specify the peripheral clock frequency.
571 This is necessary for determining the reference clock value on
572 platforms lacking an RTC.
573
574config SH_CLK_CPG
575 def_bool y
576
577config SH_CLK_CPG_LEGACY
578 depends on SH_CLK_CPG
579 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
580 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
581 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
582 !CPU_SUBTYPE_SH7269
583
584endmenu
585
586menu "CPU Frequency scaling"
587source "drivers/cpufreq/Kconfig"
588endmenu
589
590source "arch/sh/drivers/Kconfig"
591
592endmenu
593
594menu "Kernel features"
595
596source "kernel/Kconfig.hz"
597
598config KEXEC
599 bool "kexec system call (EXPERIMENTAL)"
600 depends on SUPERH32 && MMU
601 select KEXEC_CORE
602 help
603 kexec is a system call that implements the ability to shutdown your
604 current kernel, and to start another kernel. It is like a reboot
605 but it is independent of the system firmware. And like a reboot
606 you can start any kernel with it, not just Linux.
607
608 The name comes from the similarity to the exec system call.
609
610 It is an ongoing process to be certain the hardware in a machine
611 is properly shutdown, so do not be surprised if this code does not
612 initially work for you. As of this writing the exact hardware
613 interface is strongly in flux, so no good recommendation can be
614 made.
615
616config CRASH_DUMP
617 bool "kernel crash dumps (EXPERIMENTAL)"
618 depends on SUPERH32 && BROKEN_ON_SMP
619 help
620 Generate crash dump after being started by kexec.
621 This should be normally only set in special crash dump kernels
622 which are loaded in the main kernel with kexec-tools into
623 a specially reserved region and then later executed after
624 a crash by kdump/kexec. The crash dump kernel must be compiled
625 to a memory address not used by the main kernel using
626 PHYSICAL_START.
627
628 For more details see Documentation/admin-guide/kdump/kdump.rst
629
630config KEXEC_JUMP
631 bool "kexec jump (EXPERIMENTAL)"
632 depends on SUPERH32 && KEXEC && HIBERNATION
633 help
634 Jump between original kernel and kexeced kernel and invoke
635 code via KEXEC
636
637config PHYSICAL_START
638 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
639 default MEMORY_START
640 ---help---
641 This gives the physical address where the kernel is loaded
642 and is ordinarily the same as MEMORY_START.
643
644 Different values are primarily used in the case of kexec on panic
645 where the fail safe kernel needs to run at a different address
646 than the panic-ed kernel.
647
648config SECCOMP
649 bool "Enable seccomp to safely compute untrusted bytecode"
650 depends on PROC_FS
651 help
652 This kernel feature is useful for number crunching applications
653 that may need to compute untrusted bytecode during their
654 execution. By using pipes or other transports made available to
655 the process as file descriptors supporting the read/write
656 syscalls, it's possible to isolate those applications in
657 their own address space using seccomp. Once seccomp is
658 enabled via prctl, it cannot be disabled and the task is only
659 allowed to execute a few safe syscalls defined by each seccomp
660 mode.
661
662 If unsure, say N.
663
664config SMP
665 bool "Symmetric multi-processing support"
666 depends on SYS_SUPPORTS_SMP
667 ---help---
668 This enables support for systems with more than one CPU. If you have
669 a system with only one CPU, say N. If you have a system with more
670 than one CPU, say Y.
671
672 If you say N here, the kernel will run on uni- and multiprocessor
673 machines, but will use only one CPU of a multiprocessor machine. If
674 you say Y here, the kernel will run on many, but not all,
675 uniprocessor machines. On a uniprocessor machine, the kernel
676 will run faster if you say N here.
677
678 People using multiprocessor machines who say Y here should also say
679 Y to "Enhanced Real Time Clock Support", below.
680
681 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
682 available at <http://www.tldp.org/docs.html#howto>.
683
684 If you don't know what to do here, say N.
685
686config NR_CPUS
687 int "Maximum number of CPUs (2-32)"
688 range 2 32
689 depends on SMP
690 default "4" if CPU_SUBTYPE_SHX3
691 default "2"
692 help
693 This allows you to specify the maximum number of CPUs which this
694 kernel will support. The maximum supported value is 32 and the
695 minimum value which makes sense is 2.
696
697 This is purely to save memory - each supported CPU adds
698 approximately eight kilobytes to the kernel image.
699
700config HOTPLUG_CPU
701 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
702 depends on SMP
703 help
704 Say Y here to experiment with turning CPUs off and on. CPUs
705 can be controlled through /sys/devices/system/cpu.
706
707config GUSA
708 def_bool y
709 depends on !SMP && SUPERH32
710 help
711 This enables support for gUSA (general UserSpace Atomicity).
712 This is the default implementation for both UP and non-ll/sc
713 CPUs, and is used by the libc, amongst others.
714
715 For additional information, design information can be found
716 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
717
718 This should only be disabled for special cases where alternate
719 atomicity implementations exist.
720
721config GUSA_RB
722 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
723 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
724 help
725 Enabling this option will allow the kernel to implement some
726 atomic operations using a software implementation of load-locked/
727 store-conditional (LLSC). On machines which do not have hardware
728 LLSC, this should be more efficient than the other alternative of
729 disabling interrupts around the atomic sequence.
730
731config HW_PERF_EVENTS
732 bool "Enable hardware performance counter support for perf events"
733 depends on PERF_EVENTS && CPU_HAS_PMU
734 default y
735 help
736 Enable hardware performance counter support for perf events. If
737 disabled, perf events will use software events only.
738
739source "drivers/sh/Kconfig"
740
741endmenu
742
743menu "Boot options"
744
745config USE_BUILTIN_DTB
746 bool "Use builtin DTB"
747 default n
748 depends on SH_DEVICE_TREE
749 help
750 Link a device tree blob for particular hardware into the kernel,
751 suppressing use of the DTB pointer provided by the bootloader.
752 This option should only be used with legacy bootloaders that are
753 not capable of providing a DTB to the kernel, or for experimental
754 hardware without stable device tree bindings.
755
756config BUILTIN_DTB_SOURCE
757 string "Source file for builtin DTB"
758 default ""
759 depends on USE_BUILTIN_DTB
760 help
761 Base name (without suffix, relative to arch/sh/boot/dts) for the
762 a DTS file that will be used to produce the DTB linked into the
763 kernel.
764
765config ZERO_PAGE_OFFSET
766 hex
767 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
768 SH_7751_SOLUTION_ENGINE
769 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
770 default "0x00002000" if PAGE_SIZE_8KB
771 default "0x00001000"
772 help
773 This sets the default offset of zero page.
774
775config BOOT_LINK_OFFSET
776 hex
777 default "0x00210000" if SH_SHMIN
778 default "0x00400000" if SH_CAYMAN
779 default "0x00810000" if SH_7780_SOLUTION_ENGINE
780 default "0x009e0000" if SH_TITAN
781 default "0x01800000" if SH_SDK7780
782 default "0x02000000" if SH_EDOSK7760
783 default "0x00800000"
784 help
785 This option allows you to set the link address offset of the zImage.
786 This can be useful if you are on a board which has a small amount of
787 memory.
788
789config ENTRY_OFFSET
790 hex
791 default "0x00001000" if PAGE_SIZE_4KB
792 default "0x00002000" if PAGE_SIZE_8KB
793 default "0x00004000" if PAGE_SIZE_16KB
794 default "0x00010000" if PAGE_SIZE_64KB
795 default "0x00000000"
796
797config ROMIMAGE_MMCIF
798 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
799 depends on CPU_SUBTYPE_SH7724
800 help
801 Say Y here to include experimental MMCIF loading code in
802 romImage. With this enabled it is possible to write the romImage
803 kernel image to an MMC card and boot the kernel straight from
804 the reset vector. At reset the processor Mask ROM will load the
805 first part of the romImage which in turn loads the rest the kernel
806 image to RAM using the MMCIF hardware block.
807
808choice
809 prompt "Kernel command line"
810 optional
811 default CMDLINE_OVERWRITE
812 help
813 Setting this option allows the kernel command line arguments
814 to be set.
815
816config CMDLINE_OVERWRITE
817 bool "Overwrite bootloader kernel arguments"
818 help
819 Given string will overwrite any arguments passed in by
820 a bootloader.
821
822config CMDLINE_EXTEND
823 bool "Extend bootloader kernel arguments"
824 help
825 Given string will be concatenated with arguments passed in
826 by a bootloader.
827
828endchoice
829
830config CMDLINE
831 string "Kernel command line arguments string"
832 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
833 default "console=ttySC1,115200"
834
835endmenu
836
837menu "Bus options"
838
839config SUPERHYWAY
840 tristate "SuperHyway Bus support"
841 depends on CPU_SUBTYPE_SH4_202
842
843config MAPLE
844 bool "Maple Bus support"
845 depends on SH_DREAMCAST
846 help
847 The Maple Bus is SEGA's serial communication bus for peripherals
848 on the Dreamcast. Without this bus support you won't be able to
849 get your Dreamcast keyboard etc to work, so most users
850 probably want to say 'Y' here, unless you are only using the
851 Dreamcast with a serial line terminal or a remote network
852 connection.
853
854endmenu
855
856menu "Power management options (EXPERIMENTAL)"
857
858source "kernel/power/Kconfig"
859
860source "drivers/cpuidle/Kconfig"
861
862endmenu