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v5.4
  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
v6.13.7
  1# SPDX-License-Identifier: GPL-2.0
  2config SUPERH
  3	def_bool y
  4	select ARCH_32BIT_OFF_T
  5	select ARCH_HAS_CPU_CACHE_ALIASING
  6	select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
  7	select ARCH_HAS_BINFMT_FLAT if !MMU
  8	select ARCH_HAS_CPU_FINALIZE_INIT
  9	select ARCH_HAS_CURRENT_STACK_POINTER
 10	select ARCH_HAS_GIGANTIC_PAGE
 11	select ARCH_HAS_GCOV_PROFILE_ALL
 12	select ARCH_HAS_PTE_SPECIAL
 13	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
 14	select ARCH_HIBERNATION_POSSIBLE if MMU
 15	select ARCH_MIGHT_HAVE_PC_PARPORT
 16	select ARCH_WANT_IPC_PARSE_VERSION
 17	select ARCH_NEED_CMPXCHG_1_EMU
 18	select CPU_NO_EFFICIENT_FFS
 19	select DMA_DECLARE_COHERENT
 20	select GENERIC_ATOMIC64
 21	select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
 22	select GENERIC_IDLE_POLL_SETUP
 23	select GENERIC_IRQ_SHOW
 24	select GENERIC_LIB_ASHLDI3
 25	select GENERIC_LIB_ASHRDI3
 26	select GENERIC_LIB_LSHRDI3
 27	select GENERIC_PCI_IOMAP if PCI
 28	select GENERIC_SCHED_CLOCK
 29	select GENERIC_SMP_IDLE_THREAD
 30	select GUP_GET_PXX_LOW_HIGH if X2TLB
 31	select HAS_IOPORT if HAS_IOPORT_MAP
 32	select GENERIC_IOREMAP if MMU
 33	select HAVE_ARCH_AUDITSYSCALL
 34	select HAVE_ARCH_KGDB
 35	select HAVE_ARCH_SECCOMP_FILTER
 36	select HAVE_ARCH_TRACEHOOK
 
 37	select HAVE_DEBUG_BUGVERBOSE
 
 
 
 
 
 38	select HAVE_DEBUG_KMEMLEAK
 39	select HAVE_DYNAMIC_FTRACE
 40	select HAVE_GUP_FAST if MMU
 41	select HAVE_FUNCTION_GRAPH_TRACER
 42	select HAVE_FUNCTION_TRACER
 43	select HAVE_FTRACE_MCOUNT_RECORD
 44	select HAVE_HW_BREAKPOINT
 45	select HAVE_IOREMAP_PROT if MMU && !X2TLB
 46	select HAVE_KERNEL_BZIP2
 47	select HAVE_KERNEL_GZIP
 48	select HAVE_KERNEL_LZMA
 
 49	select HAVE_KERNEL_LZO
 50	select HAVE_KERNEL_XZ
 51	select HAVE_KPROBES
 52	select HAVE_KRETPROBES
 53	select HAVE_MIXED_BREAKPOINTS_REGS
 54	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
 55	select HAVE_NMI
 56	select HAVE_PATA_PLATFORM
 57	select HAVE_PERF_EVENTS
 58	select HAVE_REGS_AND_STACK_ACCESS_API
 59	select HAVE_UID16
 60	select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
 61	select HAVE_STACKPROTECTOR
 62	select HAVE_SYSCALL_TRACEPOINTS
 
 
 63	select IRQ_FORCED_THREADING
 64	select LOCK_MM_AND_FIND_VMA
 
 
 
 
 
 
 
 
 
 
 
 65	select MODULES_USE_ELF_RELA
 66	select NEED_SG_DMA_LENGTH
 67	select NO_DMA if !MMU && !DMA_COHERENT
 68	select NO_GENERIC_PCI_IOPORT_MAP if PCI
 
 69	select OLD_SIGACTION
 70	select OLD_SIGSUSPEND
 71	select PCI_DOMAINS if PCI
 72	select PERF_EVENTS
 73	select PERF_USE_VMALLOC
 74	select RTC_LIB
 75	select SPARSE_IRQ
 76	select TRACE_IRQFLAGS_SUPPORT
 
 77	help
 78	  The SuperH is a RISC processor targeted for use in embedded systems
 79	  and consumer electronics; it was also used in the Sega Dreamcast
 80	  gaming console.  The SuperH port has a home page at
 81	  <http://www.linux-sh.org/>.
 82
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 83config GENERIC_BUG
 84	def_bool y
 85	depends on BUG
 
 
 
 
 86
 87config GENERIC_HWEIGHT
 88	def_bool y
 89
 90config GENERIC_CALIBRATE_DELAY
 91	bool
 92
 93config GENERIC_LOCKBREAK
 94	def_bool y
 95	depends on SMP && PREEMPTION
 96
 97config ARCH_SUSPEND_POSSIBLE
 98	def_bool n
 99
100config ARCH_HIBERNATION_POSSIBLE
101	def_bool n
102
103config SYS_SUPPORTS_APM_EMULATION
104	bool
105	select ARCH_SUSPEND_POSSIBLE
106
 
 
 
107config SYS_SUPPORTS_SMP
108	bool
109
110config SYS_SUPPORTS_NUMA
111	bool
112
113config STACKTRACE_SUPPORT
114	def_bool y
115
116config LOCKDEP_SUPPORT
117	def_bool y
118
119config ARCH_HAS_ILOG2_U32
120	def_bool n
121
122config ARCH_HAS_ILOG2_U64
123	def_bool n
124
125config NO_IOPORT_MAP
126	def_bool !PCI
127	depends on !SH_SHMIN && !SH_HP6XX && !SH_SOLUTION_ENGINE && \
128		   !SH_DREAMCAST
129
130config IO_TRAPPED
131	bool
132
133config SWAP_IO_SPACE
134	bool
135
136config DMA_COHERENT
137	bool
138
139config DMA_NONCOHERENT
140	def_bool !NO_DMA && !DMA_COHERENT
141	select ARCH_HAS_DMA_PREP_COHERENT
142	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
143	select DMA_DIRECT_REMAP
144
145config PGTABLE_LEVELS
146	default 3 if X2TLB
147	default 2
148
149menu "System type"
150
151#
152# Processor families
153#
154config CPU_SH2
155	bool
156	select SH_INTC
157
158config CPU_SH2A
159	bool
160	select CPU_SH2
161	select UNCACHED_MAPPING
162
163config CPU_J2
164	bool
165	select CPU_SH2
166	select OF
167	select OF_EARLY_FLATTREE
168
169config CPU_SH3
170	bool
171	select CPU_HAS_INTEVT
172	select CPU_HAS_SR_RB
173	select SH_INTC
174	select SYS_SUPPORTS_SH_TMU
175
176config CPU_SH4
177	bool
178	select ARCH_SUPPORTS_HUGETLBFS if MMU
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
185config CPU_SH4A
186	bool
187	select CPU_SH4
188
189config CPU_SH4AL_DSP
190	bool
191	select CPU_SH4A
192	select CPU_HAS_DSP
193
 
 
 
 
 
 
194config CPU_SHX2
195	bool
196
197config CPU_SHX3
198	bool
199	select DMA_COHERENT
200	select SYS_SUPPORTS_SMP
201	select SYS_SUPPORTS_NUMA
202
203config ARCH_SHMOBILE
204	bool
205	select ARCH_SUSPEND_POSSIBLE
206	select PM
207
208config CPU_HAS_PMU
209       depends on CPU_SH4 || CPU_SH4A
210       default y
211       bool
212
 
 
213choice
214	prompt "Processor sub-type selection"
215
216#
217# Processor subtypes
218#
219
220# SH-2 Processor Support
221
222config CPU_SUBTYPE_SH7619
223	bool "Support SH7619 processor"
224	select CPU_SH2
225	select SYS_SUPPORTS_SH_CMT
226
227config CPU_SUBTYPE_J2
228	bool "Support J2 processor"
229	select CPU_J2
230	select SYS_SUPPORTS_SMP
231	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
232
233# SH-2A Processor Support
234
235config CPU_SUBTYPE_SH7201
236	bool "Support SH7201 processor"
237	select CPU_SH2A
238	select CPU_HAS_FPU
239	select SYS_SUPPORTS_SH_MTU2
240 
241config CPU_SUBTYPE_SH7203
242	bool "Support SH7203 processor"
243	select CPU_SH2A
244	select CPU_HAS_FPU
245	select SYS_SUPPORTS_SH_CMT
246	select SYS_SUPPORTS_SH_MTU2
247	select PINCTRL
248
249config CPU_SUBTYPE_SH7206
250	bool "Support SH7206 processor"
251	select CPU_SH2A
252	select SYS_SUPPORTS_SH_CMT
253	select SYS_SUPPORTS_SH_MTU2
254
255config CPU_SUBTYPE_SH7263
256	bool "Support SH7263 processor"
257	select CPU_SH2A
258	select CPU_HAS_FPU
259	select SYS_SUPPORTS_SH_CMT
260	select SYS_SUPPORTS_SH_MTU2
261
262config CPU_SUBTYPE_SH7264
263	bool "Support SH7264 processor"
264	select CPU_SH2A
265	select CPU_HAS_FPU
266	select SYS_SUPPORTS_SH_CMT
267	select SYS_SUPPORTS_SH_MTU2
268	select PINCTRL
269
270config CPU_SUBTYPE_SH7269
271	bool "Support SH7269 processor"
272	select CPU_SH2A
273	select CPU_HAS_FPU
274	select SYS_SUPPORTS_SH_CMT
275	select SYS_SUPPORTS_SH_MTU2
276	select PINCTRL
277
278config CPU_SUBTYPE_MXG
279	bool "Support MX-G processor"
280	select CPU_SH2A
281	select SYS_SUPPORTS_SH_MTU2
282	help
283	  Select MX-G if running on an R8A03022BG part.
284
285# SH-3 Processor Support
286
287config CPU_SUBTYPE_SH7705
288	bool "Support SH7705 processor"
289	select CPU_SH3
290
291config CPU_SUBTYPE_SH7706
292	bool "Support SH7706 processor"
293	select CPU_SH3
294	help
295	  Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
296
297config CPU_SUBTYPE_SH7707
298	bool "Support SH7707 processor"
299	select CPU_SH3
300	help
301	  Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
302
303config CPU_SUBTYPE_SH7708
304	bool "Support SH7708 processor"
305	select CPU_SH3
306	help
307	  Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
308	  if you have a 100 Mhz SH-3 HD6417708R CPU.
309
310config CPU_SUBTYPE_SH7709
311	bool "Support SH7709 processor"
312	select CPU_SH3
313	help
314	  Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
315
316config CPU_SUBTYPE_SH7710
317	bool "Support SH7710 processor"
318	select CPU_SH3
319	select CPU_HAS_DSP
320	help
321	  Select SH7710 if you have a SH3-DSP SH7710 CPU.
322
323config CPU_SUBTYPE_SH7712
324	bool "Support SH7712 processor"
325	select CPU_SH3
326	select CPU_HAS_DSP
327	help
328	  Select SH7712 if you have a SH3-DSP SH7712 CPU.
329
330config CPU_SUBTYPE_SH7720
331	bool "Support SH7720 processor"
332	select CPU_SH3
333	select CPU_HAS_DSP
334	select SYS_SUPPORTS_SH_CMT
335	select USB_OHCI_SH if USB_OHCI_HCD
336	select PINCTRL
337	help
338	  Select SH7720 if you have a SH3-DSP SH7720 CPU.
339
340config CPU_SUBTYPE_SH7721
341	bool "Support SH7721 processor"
342	select CPU_SH3
343	select CPU_HAS_DSP
344	select SYS_SUPPORTS_SH_CMT
345	select USB_OHCI_SH if USB_OHCI_HCD
346	help
347	  Select SH7721 if you have a SH3-DSP SH7721 CPU.
348
349# SH-4 Processor Support
350
351config CPU_SUBTYPE_SH7750
352	bool "Support SH7750 processor"
353	select CPU_SH4
354	help
355	  Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
356
357config CPU_SUBTYPE_SH7091
358	bool "Support SH7091 processor"
359	select CPU_SH4
360	help
361	  Select SH7091 if you have an SH-4 based Sega device (such as
362	  the Dreamcast, Naomi, and Naomi 2).
363
364config CPU_SUBTYPE_SH7750R
365	bool "Support SH7750R processor"
366	select CPU_SH4
367
368config CPU_SUBTYPE_SH7750S
369	bool "Support SH7750S processor"
370	select CPU_SH4
371
372config CPU_SUBTYPE_SH7751
373	bool "Support SH7751 processor"
374	select CPU_SH4
375	help
376	  Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
377	  or if you have a HD6417751R CPU.
378
379config CPU_SUBTYPE_SH7751R
380	bool "Support SH7751R processor"
381	select CPU_SH4
382
383config CPU_SUBTYPE_SH7760
384	bool "Support SH7760 processor"
385	select CPU_SH4
386
 
 
 
 
387# SH-4A Processor Support
388
389config CPU_SUBTYPE_SH7723
390	bool "Support SH7723 processor"
391	select CPU_SH4A
392	select CPU_SHX2
393	select ARCH_SHMOBILE
394	select ARCH_SPARSEMEM_ENABLE
395	select SYS_SUPPORTS_SH_CMT
396	select PINCTRL
397	help
398	  Select SH7723 if you have an SH-MobileR2 CPU.
399
400config CPU_SUBTYPE_SH7724
401	bool "Support SH7724 processor"
402	select CPU_SH4A
403	select CPU_SHX2
404	select ARCH_SHMOBILE
405	select ARCH_SPARSEMEM_ENABLE
406	select SYS_SUPPORTS_SH_CMT
407	select PINCTRL
408	help
409	  Select SH7724 if you have an SH-MobileR2R CPU.
410
411config CPU_SUBTYPE_SH7734
412	bool "Support SH7734 processor"
413	select CPU_SH4A
414	select CPU_SHX2
415	select PINCTRL
416	help
417	  Select SH7734 if you have a SH4A SH7734 CPU.
418
419config CPU_SUBTYPE_SH7757
420	bool "Support SH7757 processor"
421	select CPU_SH4A
422	select CPU_SHX2
423	select PINCTRL
424	help
425	  Select SH7757 if you have a SH4A SH7757 CPU.
426
427config CPU_SUBTYPE_SH7763
428	bool "Support SH7763 processor"
429	select CPU_SH4A
430	select USB_OHCI_SH if USB_OHCI_HCD
431	help
432	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
433
434config CPU_SUBTYPE_SH7770
435	bool "Support SH7770 processor"
436	select CPU_SH4A
437
438config CPU_SUBTYPE_SH7780
439	bool "Support SH7780 processor"
440	select CPU_SH4A
441
442config CPU_SUBTYPE_SH7785
443	bool "Support SH7785 processor"
444	select CPU_SH4A
445	select CPU_SHX2
446	select ARCH_SPARSEMEM_ENABLE
447	select SYS_SUPPORTS_NUMA
448	select PINCTRL
449
450config CPU_SUBTYPE_SH7786
451	bool "Support SH7786 processor"
452	select CPU_SH4A
453	select CPU_SHX3
454	select CPU_HAS_PTEAEX
455	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
456	select USB_OHCI_SH if USB_OHCI_HCD
457	select USB_EHCI_SH if USB_EHCI_HCD
458	select PINCTRL
459
460config CPU_SUBTYPE_SHX3
461	bool "Support SH-X3 processor"
462	select CPU_SH4A
463	select CPU_SHX3
464	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
465	select GPIOLIB
466	select PINCTRL
467
468# SH4AL-DSP Processor Support
469
470config CPU_SUBTYPE_SH7343
471	bool "Support SH7343 processor"
472	select CPU_SH4AL_DSP
473	select ARCH_SHMOBILE
474	select SYS_SUPPORTS_SH_CMT
475
476config CPU_SUBTYPE_SH7722
477	bool "Support SH7722 processor"
478	select CPU_SH4AL_DSP
479	select CPU_SHX2
480	select ARCH_SHMOBILE
481	select ARCH_SPARSEMEM_ENABLE
482	select SYS_SUPPORTS_NUMA
483	select SYS_SUPPORTS_SH_CMT
484	select PINCTRL
485
486config CPU_SUBTYPE_SH7366
487	bool "Support SH7366 processor"
488	select CPU_SH4AL_DSP
489	select CPU_SHX2
490	select ARCH_SHMOBILE
491	select ARCH_SPARSEMEM_ENABLE
492	select SYS_SUPPORTS_NUMA
493	select SYS_SUPPORTS_SH_CMT
494
495endchoice
496
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
497source "arch/sh/mm/Kconfig"
498 
499source "arch/sh/Kconfig.cpu"
500
501source "arch/sh/boards/Kconfig"
502
503menu "Timer and clock configuration"
504
505config SH_PCLK_FREQ
506	int "Peripheral clock frequency (in Hz)"
507	depends on SH_CLK_CPG_LEGACY
508	default "31250000" if CPU_SUBTYPE_SH7619
509	default "33333333" if CPU_SUBTYPE_SH7770 || \
510			      CPU_SUBTYPE_SH7760 || \
511			      CPU_SUBTYPE_SH7705 || \
512			      CPU_SUBTYPE_SH7203 || \
513			      CPU_SUBTYPE_SH7206 || \
514			      CPU_SUBTYPE_SH7263 || \
515			      CPU_SUBTYPE_MXG
516	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
 
517	default "50000000"
518	help
519	  This option is used to specify the peripheral clock frequency.
520	  This is necessary for determining the reference clock value on
521	  platforms lacking an RTC.
522
523config SH_CLK_CPG
524	def_bool y
525
526config SH_CLK_CPG_LEGACY
527	depends on SH_CLK_CPG
528	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
529		      !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
530		      !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
531		      !CPU_SUBTYPE_SH7269
532
533endmenu
534
535menu "CPU Frequency scaling"
536source "drivers/cpufreq/Kconfig"
537endmenu
538
539source "arch/sh/drivers/Kconfig"
540
541endmenu
542
543menu "Kernel features"
544
545source "kernel/Kconfig.hz"
546
547config ARCH_SUPPORTS_KEXEC
548	def_bool MMU
549
550config ARCH_SUPPORTS_CRASH_DUMP
551	def_bool BROKEN_ON_SMP
552
553config ARCH_DEFAULT_CRASH_DUMP
554	def_bool y
555
556config ARCH_SUPPORTS_KEXEC_JUMP
557	def_bool y
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
558
559config PHYSICAL_START
560	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
561	default MEMORY_START
562	help
563	  This gives the physical address where the kernel is loaded
564	  and is ordinarily the same as MEMORY_START.
565
566	  Different values are primarily used in the case of kexec on panic
567	  where the fail safe kernel needs to run at a different address
568	  than the panic-ed kernel.
569
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
570config SMP
571	bool "Symmetric multi-processing support"
572	depends on SYS_SUPPORTS_SMP
573	help
574	  This enables support for systems with more than one CPU. If you have
575	  a system with only one CPU, say N. If you have a system with more
576	  than one CPU, say Y.
577
578	  If you say N here, the kernel will run on uni- and multiprocessor
579	  machines, but will use only one CPU of a multiprocessor machine. If
580	  you say Y here, the kernel will run on many, but not all,
581	  uniprocessor machines. On a uniprocessor machine, the kernel
582	  will run faster if you say N here.
583
584	  People using multiprocessor machines who say Y here should also say
585	  Y to "Enhanced Real Time Clock Support", below.
586
587	  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
588	  available at <https://www.tldp.org/docs.html#howto>.
589
590	  If you don't know what to do here, say N.
591
592config NR_CPUS
593	int "Maximum number of CPUs (2-32)"
594	range 2 32
595	depends on SMP
596	default "4" if CPU_SUBTYPE_SHX3
597	default "2"
598	help
599	  This allows you to specify the maximum number of CPUs which this
600	  kernel will support.  The maximum supported value is 32 and the
601	  minimum value which makes sense is 2.
602
603	  This is purely to save memory - each supported CPU adds
604	  approximately eight kilobytes to the kernel image.
605
606config HOTPLUG_CPU
607	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
608	depends on SMP
609	help
610	  Say Y here to experiment with turning CPUs off and on.  CPUs
611	  can be controlled through /sys/devices/system/cpu.
612
613config GUSA
614	def_bool y
615	depends on !SMP
616	help
617	  This enables support for gUSA (general UserSpace Atomicity).
618	  This is the default implementation for both UP and non-ll/sc
619	  CPUs, and is used by the libc, amongst others.
620
621	  For additional information, design information can be found 
622	  in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
623
624	  This should only be disabled for special cases where alternate
625	  atomicity implementations exist.
626
627config GUSA_RB
628	bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
629	depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
630	help
631	  Enabling this option will allow the kernel to implement some
632	  atomic operations using a software implementation of load-locked/
633	  store-conditional (LLSC). On machines which do not have hardware
634	  LLSC, this should be more efficient than the other alternative of
635	  disabling interrupts around the atomic sequence.
636
637config HW_PERF_EVENTS
638	bool "Enable hardware performance counter support for perf events"
639	depends on PERF_EVENTS && CPU_HAS_PMU
640	default y
641	help
642	  Enable hardware performance counter support for perf events. If
643	  disabled, perf events will use software events only.
644
645source "drivers/sh/Kconfig"
646
647endmenu
648
649menu "Boot options"
650
651config USE_BUILTIN_DTB
652	bool "Use builtin DTB"
653	default n
654	depends on SH_DEVICE_TREE
655	help
656	  Link a device tree blob for particular hardware into the kernel,
657	  suppressing use of the DTB pointer provided by the bootloader.
658	  This option should only be used with legacy bootloaders that are
659	  not capable of providing a DTB to the kernel, or for experimental
660	  hardware without stable device tree bindings.
661
662config BUILTIN_DTB_SOURCE
663	string "Source file for builtin DTB"
664	default ""
665	depends on USE_BUILTIN_DTB
666	help
667	  Base name (without suffix, relative to arch/sh/boot/dts) for the
668	  a DTS file that will be used to produce the DTB linked into the
669	  kernel.
670
671config ZERO_PAGE_OFFSET
672	hex
673	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
674				SH_7751_SOLUTION_ENGINE
675	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
676	default "0x00002000" if PAGE_SIZE_8KB
677	default "0x00001000"
678	help
679	  This sets the default offset of zero page.
680
681config BOOT_LINK_OFFSET
682	hex
683	default "0x00210000" if SH_SHMIN
 
684	default "0x00810000" if SH_7780_SOLUTION_ENGINE
685	default "0x009e0000" if SH_TITAN
686	default "0x01800000" if SH_SDK7780
687	default "0x02000000" if SH_EDOSK7760
688	default "0x00800000"
689	help
690	  This option allows you to set the link address offset of the zImage.
691	  This can be useful if you are on a board which has a small amount of
692	  memory.
693
694config ENTRY_OFFSET
695	hex
696	default "0x00001000" if PAGE_SIZE_4KB
697	default "0x00002000" if PAGE_SIZE_8KB
698	default "0x00004000" if PAGE_SIZE_16KB
699	default "0x00010000" if PAGE_SIZE_64KB
700	default "0x00000000"
701
702config ROMIMAGE_MMCIF
703	bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
704	depends on CPU_SUBTYPE_SH7724
705	help
706	  Say Y here to include experimental MMCIF loading code in
707	  romImage. With this enabled it is possible to write the romImage
708	  kernel image to an MMC card and boot the kernel straight from
709	  the reset vector. At reset the processor Mask ROM will load the
710	  first part of the romImage which in turn loads the rest the kernel
711	  image to RAM using the MMCIF hardware block.
712
713choice
714	prompt "Kernel command line"
 
715	default CMDLINE_OVERWRITE
716	help
717	  Setting this option allows the kernel command line arguments
718	  to be set.
719
720config CMDLINE_OVERWRITE
721	bool "Overwrite bootloader kernel arguments"
722	help
723	  Given string will overwrite any arguments passed in by
724	  a bootloader.
725
726config CMDLINE_EXTEND
727	bool "Extend bootloader kernel arguments"
728	help
729	  Given string will be concatenated with arguments passed in
730	  by a bootloader.
731
732config CMDLINE_FROM_BOOTLOADER
733	bool "Use bootloader kernel arguments"
734	help
735	  Uses the command-line options passed by the boot loader.
736
737endchoice
738
739config CMDLINE
740	string "Kernel command line arguments string"
741	depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
742	default "console=ttySC1,115200"
743
744endmenu
745
746menu "Bus options"
 
 
 
 
747
748config MAPLE
749	bool "Maple Bus support"
750	depends on SH_DREAMCAST
751	help
752	 The Maple Bus is SEGA's serial communication bus for peripherals
753	 on the Dreamcast. Without this bus support you won't be able to
754	 get your Dreamcast keyboard etc to work, so most users
755	 probably want to say 'Y' here, unless you are only using the
756	 Dreamcast with a serial line terminal or a remote network
757	 connection.
758
759endmenu
760
761menu "Power management options (EXPERIMENTAL)"
762
763source "kernel/power/Kconfig"
764
765source "drivers/cpuidle/Kconfig"
766
767endmenu