xref: /openbmc/linux/arch/sh/Kconfig (revision ba61bb17)
1# SPDX-License-Identifier: GPL-2.0
2config SUPERH
3	def_bool y
4	select ARCH_HAS_PTE_SPECIAL
5	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
6	select ARCH_MIGHT_HAVE_PC_PARPORT
7	select ARCH_NO_COHERENT_DMA_MMAP if !MMU
8	select HAVE_PATA_PLATFORM
9	select CLKDEV_LOOKUP
10	select HAVE_IDE if HAS_IOPORT_MAP
11	select HAVE_MEMBLOCK
12	select HAVE_MEMBLOCK_NODE_MAP
13	select NO_BOOTMEM
14	select ARCH_DISCARD_MEMBLOCK
15	select HAVE_OPROFILE
16	select HAVE_GENERIC_DMA_COHERENT
17	select HAVE_ARCH_TRACEHOOK
18	select HAVE_PERF_EVENTS
19	select HAVE_DEBUG_BUGVERBOSE
20	select ARCH_HAVE_CUSTOM_GPIO_H
21	select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
22	select ARCH_HAS_GCOV_PROFILE_ALL
23	select PERF_USE_VMALLOC
24	select HAVE_DEBUG_KMEMLEAK
25	select HAVE_KERNEL_GZIP
26	select CPU_NO_EFFICIENT_FFS
27	select HAVE_KERNEL_BZIP2
28	select HAVE_KERNEL_LZMA
29	select HAVE_KERNEL_XZ
30	select HAVE_KERNEL_LZO
31	select HAVE_UID16
32	select ARCH_WANT_IPC_PARSE_VERSION
33	select HAVE_SYSCALL_TRACEPOINTS
34	select HAVE_REGS_AND_STACK_ACCESS_API
35	select MAY_HAVE_SPARSE_IRQ
36	select IRQ_FORCED_THREADING
37	select RTC_LIB
38	select GENERIC_ATOMIC64
39	select GENERIC_IRQ_SHOW
40	select GENERIC_SMP_IDLE_THREAD
41	select GENERIC_IDLE_POLL_SETUP
42	select GENERIC_CLOCKEVENTS
43	select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
44	select GENERIC_SCHED_CLOCK
45	select GENERIC_STRNCPY_FROM_USER
46	select GENERIC_STRNLEN_USER
47	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
48	select MODULES_USE_ELF_RELA
49	select OLD_SIGSUSPEND
50	select OLD_SIGACTION
51	select HAVE_ARCH_AUDITSYSCALL
52	select HAVE_FUTEX_CMPXCHG if FUTEX
53	select HAVE_NMI
54	select NEED_DMA_MAP_STATE
55	select NEED_SG_DMA_LENGTH
56
57	help
58	  The SuperH is a RISC processor targeted for use in embedded systems
59	  and consumer electronics; it was also used in the Sega Dreamcast
60	  gaming console.  The SuperH port has a home page at
61	  <http://www.linux-sh.org/>.
62
63config SUPERH32
64	def_bool "$(ARCH)" = "sh"
65	select HAVE_KPROBES
66	select HAVE_KRETPROBES
67	select HAVE_IOREMAP_PROT if MMU && !X2TLB
68	select HAVE_FUNCTION_TRACER
69	select HAVE_FTRACE_MCOUNT_RECORD
70	select HAVE_DYNAMIC_FTRACE
71	select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
72	select ARCH_WANT_IPC_PARSE_VERSION
73	select HAVE_FUNCTION_GRAPH_TRACER
74	select HAVE_ARCH_KGDB
75	select HAVE_HW_BREAKPOINT
76	select HAVE_MIXED_BREAKPOINTS_REGS
77	select PERF_EVENTS
78	select ARCH_HIBERNATION_POSSIBLE if MMU
79	select SPARSE_IRQ
80	select HAVE_STACKPROTECTOR
81
82config SUPERH64
83	def_bool "$(ARCH)" = "sh64"
84	select HAVE_EXIT_THREAD
85	select KALLSYMS
86
87config ARCH_DEFCONFIG
88	string
89	default "arch/sh/configs/shx3_defconfig" if SUPERH32
90	default "arch/sh/configs/cayman_defconfig" if SUPERH64
91
92config RWSEM_GENERIC_SPINLOCK
93	def_bool y
94
95config RWSEM_XCHGADD_ALGORITHM
96	bool
97
98config GENERIC_BUG
99	def_bool y
100	depends on BUG && SUPERH32
101
102config GENERIC_CSUM
103	def_bool y
104	depends on SUPERH64
105
106config GENERIC_HWEIGHT
107	def_bool y
108
109config GENERIC_CALIBRATE_DELAY
110	bool
111
112config GENERIC_LOCKBREAK
113	def_bool y
114	depends on SMP && PREEMPT
115
116config ARCH_SUSPEND_POSSIBLE
117	def_bool n
118
119config ARCH_HIBERNATION_POSSIBLE
120	def_bool n
121
122config SYS_SUPPORTS_APM_EMULATION
123	bool
124	select ARCH_SUSPEND_POSSIBLE
125
126config SYS_SUPPORTS_HUGETLBFS
127	bool
128
129config SYS_SUPPORTS_SMP
130	bool
131
132config SYS_SUPPORTS_NUMA
133	bool
134
135config SYS_SUPPORTS_PCI
136	bool
137
138config STACKTRACE_SUPPORT
139	def_bool y
140
141config LOCKDEP_SUPPORT
142	def_bool y
143
144config ARCH_HAS_ILOG2_U32
145	def_bool n
146
147config ARCH_HAS_ILOG2_U64
148	def_bool n
149
150config NO_IOPORT_MAP
151	def_bool !PCI
152	depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
153		   !SH_HP6XX && !SH_SOLUTION_ENGINE
154
155config IO_TRAPPED
156	bool
157
158config SWAP_IO_SPACE
159	bool
160
161config DMA_COHERENT
162	bool
163
164config DMA_NONCOHERENT
165	def_bool !DMA_COHERENT
166
167config PGTABLE_LEVELS
168	default 3 if X2TLB
169	default 2
170
171source "init/Kconfig"
172
173source "kernel/Kconfig.freezer"
174
175menu "System type"
176
177#
178# Processor families
179#
180config CPU_SH2
181	bool
182	select SH_INTC
183
184config CPU_SH2A
185	bool
186	select CPU_SH2
187	select UNCACHED_MAPPING
188
189config CPU_J2
190	bool
191	select CPU_SH2
192	select OF
193	select OF_EARLY_FLATTREE
194
195config CPU_SH3
196	bool
197	select CPU_HAS_INTEVT
198	select CPU_HAS_SR_RB
199	select SH_INTC
200	select SYS_SUPPORTS_SH_TMU
201
202config CPU_SH4
203	bool
204	select CPU_HAS_INTEVT
205	select CPU_HAS_SR_RB
206	select CPU_HAS_FPU if !CPU_SH4AL_DSP
207	select SH_INTC
208	select SYS_SUPPORTS_SH_TMU
209	select SYS_SUPPORTS_HUGETLBFS if MMU
210
211config CPU_SH4A
212	bool
213	select CPU_SH4
214
215config CPU_SH4AL_DSP
216	bool
217	select CPU_SH4A
218	select CPU_HAS_DSP
219
220config CPU_SH5
221	bool
222	select CPU_HAS_FPU
223	select SYS_SUPPORTS_SH_TMU
224	select SYS_SUPPORTS_HUGETLBFS if MMU
225
226config CPU_SHX2
227	bool
228
229config CPU_SHX3
230	bool
231	select DMA_COHERENT
232	select SYS_SUPPORTS_SMP
233	select SYS_SUPPORTS_NUMA
234
235config ARCH_SHMOBILE
236	bool
237	select ARCH_SUSPEND_POSSIBLE
238	select PM
239
240config CPU_HAS_PMU
241       depends on CPU_SH4 || CPU_SH4A
242       default y
243       bool
244
245if SUPERH32
246
247choice
248	prompt "Processor sub-type selection"
249
250#
251# Processor subtypes
252#
253
254# SH-2 Processor Support
255
256config CPU_SUBTYPE_SH7619
257	bool "Support SH7619 processor"
258	select CPU_SH2
259	select SYS_SUPPORTS_SH_CMT
260
261config CPU_SUBTYPE_J2
262	bool "Support J2 processor"
263	select CPU_J2
264	select SYS_SUPPORTS_SMP
265	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
266
267# SH-2A Processor Support
268
269config CPU_SUBTYPE_SH7201
270	bool "Support SH7201 processor"
271	select CPU_SH2A
272	select CPU_HAS_FPU
273	select SYS_SUPPORTS_SH_MTU2
274
275config CPU_SUBTYPE_SH7203
276	bool "Support SH7203 processor"
277	select CPU_SH2A
278	select CPU_HAS_FPU
279	select SYS_SUPPORTS_SH_CMT
280	select SYS_SUPPORTS_SH_MTU2
281	select PINCTRL
282
283config CPU_SUBTYPE_SH7206
284	bool "Support SH7206 processor"
285	select CPU_SH2A
286	select SYS_SUPPORTS_SH_CMT
287	select SYS_SUPPORTS_SH_MTU2
288
289config CPU_SUBTYPE_SH7263
290	bool "Support SH7263 processor"
291	select CPU_SH2A
292	select CPU_HAS_FPU
293	select SYS_SUPPORTS_SH_CMT
294	select SYS_SUPPORTS_SH_MTU2
295
296config CPU_SUBTYPE_SH7264
297	bool "Support SH7264 processor"
298	select CPU_SH2A
299	select CPU_HAS_FPU
300	select SYS_SUPPORTS_SH_CMT
301	select SYS_SUPPORTS_SH_MTU2
302	select PINCTRL
303
304config CPU_SUBTYPE_SH7269
305	bool "Support SH7269 processor"
306	select CPU_SH2A
307	select CPU_HAS_FPU
308	select SYS_SUPPORTS_SH_CMT
309	select SYS_SUPPORTS_SH_MTU2
310	select PINCTRL
311
312config CPU_SUBTYPE_MXG
313	bool "Support MX-G processor"
314	select CPU_SH2A
315	select SYS_SUPPORTS_SH_MTU2
316	help
317	  Select MX-G if running on an R8A03022BG part.
318
319# SH-3 Processor Support
320
321config CPU_SUBTYPE_SH7705
322	bool "Support SH7705 processor"
323	select CPU_SH3
324
325config CPU_SUBTYPE_SH7706
326	bool "Support SH7706 processor"
327	select CPU_SH3
328	help
329	  Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
330
331config CPU_SUBTYPE_SH7707
332	bool "Support SH7707 processor"
333	select CPU_SH3
334	help
335	  Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
336
337config CPU_SUBTYPE_SH7708
338	bool "Support SH7708 processor"
339	select CPU_SH3
340	help
341	  Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
342	  if you have a 100 Mhz SH-3 HD6417708R CPU.
343
344config CPU_SUBTYPE_SH7709
345	bool "Support SH7709 processor"
346	select CPU_SH3
347	help
348	  Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
349
350config CPU_SUBTYPE_SH7710
351	bool "Support SH7710 processor"
352	select CPU_SH3
353	select CPU_HAS_DSP
354	help
355	  Select SH7710 if you have a SH3-DSP SH7710 CPU.
356
357config CPU_SUBTYPE_SH7712
358	bool "Support SH7712 processor"
359	select CPU_SH3
360	select CPU_HAS_DSP
361	help
362	  Select SH7712 if you have a SH3-DSP SH7712 CPU.
363
364config CPU_SUBTYPE_SH7720
365	bool "Support SH7720 processor"
366	select CPU_SH3
367	select CPU_HAS_DSP
368	select SYS_SUPPORTS_SH_CMT
369	select USB_OHCI_SH if USB_OHCI_HCD
370	select PINCTRL
371	help
372	  Select SH7720 if you have a SH3-DSP SH7720 CPU.
373
374config CPU_SUBTYPE_SH7721
375	bool "Support SH7721 processor"
376	select CPU_SH3
377	select CPU_HAS_DSP
378	select SYS_SUPPORTS_SH_CMT
379	select USB_OHCI_SH if USB_OHCI_HCD
380	help
381	  Select SH7721 if you have a SH3-DSP SH7721 CPU.
382
383# SH-4 Processor Support
384
385config CPU_SUBTYPE_SH7750
386	bool "Support SH7750 processor"
387	select CPU_SH4
388	help
389	  Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
390
391config CPU_SUBTYPE_SH7091
392	bool "Support SH7091 processor"
393	select CPU_SH4
394	help
395	  Select SH7091 if you have an SH-4 based Sega device (such as
396	  the Dreamcast, Naomi, and Naomi 2).
397
398config CPU_SUBTYPE_SH7750R
399	bool "Support SH7750R processor"
400	select CPU_SH4
401
402config CPU_SUBTYPE_SH7750S
403	bool "Support SH7750S processor"
404	select CPU_SH4
405
406config CPU_SUBTYPE_SH7751
407	bool "Support SH7751 processor"
408	select CPU_SH4
409	help
410	  Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
411	  or if you have a HD6417751R CPU.
412
413config CPU_SUBTYPE_SH7751R
414	bool "Support SH7751R processor"
415	select CPU_SH4
416
417config CPU_SUBTYPE_SH7760
418	bool "Support SH7760 processor"
419	select CPU_SH4
420
421config CPU_SUBTYPE_SH4_202
422	bool "Support SH4-202 processor"
423	select CPU_SH4
424
425# SH-4A Processor Support
426
427config CPU_SUBTYPE_SH7723
428	bool "Support SH7723 processor"
429	select CPU_SH4A
430	select CPU_SHX2
431	select ARCH_SHMOBILE
432	select ARCH_SPARSEMEM_ENABLE
433	select SYS_SUPPORTS_SH_CMT
434	select PINCTRL
435	help
436	  Select SH7723 if you have an SH-MobileR2 CPU.
437
438config CPU_SUBTYPE_SH7724
439	bool "Support SH7724 processor"
440	select CPU_SH4A
441	select CPU_SHX2
442	select ARCH_SHMOBILE
443	select ARCH_SPARSEMEM_ENABLE
444	select SYS_SUPPORTS_SH_CMT
445	select PINCTRL
446	help
447	  Select SH7724 if you have an SH-MobileR2R CPU.
448
449config CPU_SUBTYPE_SH7734
450	bool "Support SH7734 processor"
451	select CPU_SH4A
452	select CPU_SHX2
453	select PINCTRL
454	help
455	  Select SH7734 if you have a SH4A SH7734 CPU.
456
457config CPU_SUBTYPE_SH7757
458	bool "Support SH7757 processor"
459	select CPU_SH4A
460	select CPU_SHX2
461	select PINCTRL
462	help
463	  Select SH7757 if you have a SH4A SH7757 CPU.
464
465config CPU_SUBTYPE_SH7763
466	bool "Support SH7763 processor"
467	select CPU_SH4A
468	select USB_OHCI_SH if USB_OHCI_HCD
469	help
470	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
471
472config CPU_SUBTYPE_SH7770
473	bool "Support SH7770 processor"
474	select CPU_SH4A
475
476config CPU_SUBTYPE_SH7780
477	bool "Support SH7780 processor"
478	select CPU_SH4A
479
480config CPU_SUBTYPE_SH7785
481	bool "Support SH7785 processor"
482	select CPU_SH4A
483	select CPU_SHX2
484	select ARCH_SPARSEMEM_ENABLE
485	select SYS_SUPPORTS_NUMA
486	select PINCTRL
487
488config CPU_SUBTYPE_SH7786
489	bool "Support SH7786 processor"
490	select CPU_SH4A
491	select CPU_SHX3
492	select CPU_HAS_PTEAEX
493	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
494	select USB_OHCI_SH if USB_OHCI_HCD
495	select USB_EHCI_SH if USB_EHCI_HCD
496	select PINCTRL
497
498config CPU_SUBTYPE_SHX3
499	bool "Support SH-X3 processor"
500	select CPU_SH4A
501	select CPU_SHX3
502	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
503	select GPIOLIB
504	select PINCTRL
505
506# SH4AL-DSP Processor Support
507
508config CPU_SUBTYPE_SH7343
509	bool "Support SH7343 processor"
510	select CPU_SH4AL_DSP
511	select ARCH_SHMOBILE
512	select SYS_SUPPORTS_SH_CMT
513
514config CPU_SUBTYPE_SH7722
515	bool "Support SH7722 processor"
516	select CPU_SH4AL_DSP
517	select CPU_SHX2
518	select ARCH_SHMOBILE
519	select ARCH_SPARSEMEM_ENABLE
520	select SYS_SUPPORTS_NUMA
521	select SYS_SUPPORTS_SH_CMT
522	select PINCTRL
523
524config CPU_SUBTYPE_SH7366
525	bool "Support SH7366 processor"
526	select CPU_SH4AL_DSP
527	select CPU_SHX2
528	select ARCH_SHMOBILE
529	select ARCH_SPARSEMEM_ENABLE
530	select SYS_SUPPORTS_NUMA
531	select SYS_SUPPORTS_SH_CMT
532
533endchoice
534
535endif
536
537if SUPERH64
538
539choice
540	prompt "Processor sub-type selection"
541
542# SH-5 Processor Support
543
544config CPU_SUBTYPE_SH5_101
545	bool "Support SH5-101 processor"
546	select CPU_SH5
547
548config CPU_SUBTYPE_SH5_103
549	bool "Support SH5-103 processor"
550	select CPU_SH5
551
552endchoice
553
554endif
555
556source "arch/sh/mm/Kconfig"
557
558source "arch/sh/Kconfig.cpu"
559
560source "arch/sh/boards/Kconfig"
561
562menu "Timer and clock configuration"
563
564config SH_PCLK_FREQ
565	int "Peripheral clock frequency (in Hz)"
566	depends on SH_CLK_CPG_LEGACY
567	default "31250000" if CPU_SUBTYPE_SH7619
568	default "33333333" if CPU_SUBTYPE_SH7770 || \
569			      CPU_SUBTYPE_SH7760 || \
570			      CPU_SUBTYPE_SH7705 || \
571			      CPU_SUBTYPE_SH7203 || \
572			      CPU_SUBTYPE_SH7206 || \
573			      CPU_SUBTYPE_SH7263 || \
574			      CPU_SUBTYPE_MXG
575	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
576	default "66000000" if CPU_SUBTYPE_SH4_202
577	default "50000000"
578	help
579	  This option is used to specify the peripheral clock frequency.
580	  This is necessary for determining the reference clock value on
581	  platforms lacking an RTC.
582
583config SH_CLK_CPG
584	def_bool y
585
586config SH_CLK_CPG_LEGACY
587	depends on SH_CLK_CPG
588	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
589		      !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
590		      !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
591		      !CPU_SUBTYPE_SH7269
592
593endmenu
594
595menu "CPU Frequency scaling"
596source "drivers/cpufreq/Kconfig"
597endmenu
598
599source "arch/sh/drivers/Kconfig"
600
601endmenu
602
603menu "Kernel features"
604
605source kernel/Kconfig.hz
606
607config KEXEC
608	bool "kexec system call (EXPERIMENTAL)"
609	depends on SUPERH32 && MMU
610	select KEXEC_CORE
611	help
612	  kexec is a system call that implements the ability to shutdown your
613	  current kernel, and to start another kernel.  It is like a reboot
614	  but it is independent of the system firmware.  And like a reboot
615	  you can start any kernel with it, not just Linux.
616
617	  The name comes from the similarity to the exec system call.
618
619	  It is an ongoing process to be certain the hardware in a machine
620	  is properly shutdown, so do not be surprised if this code does not
621	  initially work for you.  As of this writing the exact hardware
622	  interface is strongly in flux, so no good recommendation can be
623	  made.
624
625config CRASH_DUMP
626	bool "kernel crash dumps (EXPERIMENTAL)"
627	depends on SUPERH32 && BROKEN_ON_SMP
628	help
629	  Generate crash dump after being started by kexec.
630	  This should be normally only set in special crash dump kernels
631	  which are loaded in the main kernel with kexec-tools into
632	  a specially reserved region and then later executed after
633	  a crash by kdump/kexec. The crash dump kernel must be compiled
634	  to a memory address not used by the main kernel using
635	  PHYSICAL_START.
636
637	  For more details see Documentation/kdump/kdump.txt
638
639config KEXEC_JUMP
640	bool "kexec jump (EXPERIMENTAL)"
641	depends on SUPERH32 && KEXEC && HIBERNATION
642	help
643	  Jump between original kernel and kexeced kernel and invoke
644	  code via KEXEC
645
646config PHYSICAL_START
647	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
648	default MEMORY_START
649	---help---
650	  This gives the physical address where the kernel is loaded
651	  and is ordinarily the same as MEMORY_START.
652
653	  Different values are primarily used in the case of kexec on panic
654	  where the fail safe kernel needs to run at a different address
655	  than the panic-ed kernel.
656
657config SECCOMP
658	bool "Enable seccomp to safely compute untrusted bytecode"
659	depends on PROC_FS
660	help
661	  This kernel feature is useful for number crunching applications
662	  that may need to compute untrusted bytecode during their
663	  execution. By using pipes or other transports made available to
664	  the process as file descriptors supporting the read/write
665	  syscalls, it's possible to isolate those applications in
666	  their own address space using seccomp. Once seccomp is
667	  enabled via prctl, it cannot be disabled and the task is only
668	  allowed to execute a few safe syscalls defined by each seccomp
669	  mode.
670
671	  If unsure, say N.
672
673config SMP
674	bool "Symmetric multi-processing support"
675	depends on SYS_SUPPORTS_SMP
676	---help---
677	  This enables support for systems with more than one CPU. If you have
678	  a system with only one CPU, say N. If you have a system with more
679	  than one CPU, say Y.
680
681	  If you say N here, the kernel will run on uni- and multiprocessor
682	  machines, but will use only one CPU of a multiprocessor machine. If
683	  you say Y here, the kernel will run on many, but not all,
684	  uniprocessor machines. On a uniprocessor machine, the kernel
685	  will run faster if you say N here.
686
687	  People using multiprocessor machines who say Y here should also say
688	  Y to "Enhanced Real Time Clock Support", below.
689
690	  See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
691	  available at <http://www.tldp.org/docs.html#howto>.
692
693	  If you don't know what to do here, say N.
694
695config NR_CPUS
696	int "Maximum number of CPUs (2-32)"
697	range 2 32
698	depends on SMP
699	default "4" if CPU_SUBTYPE_SHX3
700	default "2"
701	help
702	  This allows you to specify the maximum number of CPUs which this
703	  kernel will support.  The maximum supported value is 32 and the
704	  minimum value which makes sense is 2.
705
706	  This is purely to save memory - each supported CPU adds
707	  approximately eight kilobytes to the kernel image.
708
709config HOTPLUG_CPU
710	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
711	depends on SMP
712	help
713	  Say Y here to experiment with turning CPUs off and on.  CPUs
714	  can be controlled through /sys/devices/system/cpu.
715
716source "kernel/Kconfig.preempt"
717
718config GUSA
719	def_bool y
720	depends on !SMP && SUPERH32
721	help
722	  This enables support for gUSA (general UserSpace Atomicity).
723	  This is the default implementation for both UP and non-ll/sc
724	  CPUs, and is used by the libc, amongst others.
725
726	  For additional information, design information can be found
727	  in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
728
729	  This should only be disabled for special cases where alternate
730	  atomicity implementations exist.
731
732config GUSA_RB
733	bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
734	depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
735	help
736	  Enabling this option will allow the kernel to implement some
737	  atomic operations using a software implementation of load-locked/
738	  store-conditional (LLSC). On machines which do not have hardware
739	  LLSC, this should be more efficient than the other alternative of
740	  disabling interrupts around the atomic sequence.
741
742config HW_PERF_EVENTS
743	bool "Enable hardware performance counter support for perf events"
744	depends on PERF_EVENTS && CPU_HAS_PMU
745	default y
746	help
747	  Enable hardware performance counter support for perf events. If
748	  disabled, perf events will use software events only.
749
750source "drivers/sh/Kconfig"
751
752endmenu
753
754menu "Boot options"
755
756config USE_BUILTIN_DTB
757	bool "Use builtin DTB"
758	default n
759	depends on SH_DEVICE_TREE
760	help
761	  Link a device tree blob for particular hardware into the kernel,
762	  suppressing use of the DTB pointer provided by the bootloader.
763	  This option should only be used with legacy bootloaders that are
764	  not capable of providing a DTB to the kernel, or for experimental
765	  hardware without stable device tree bindings.
766
767config BUILTIN_DTB_SOURCE
768	string "Source file for builtin DTB"
769	default ""
770	depends on USE_BUILTIN_DTB
771	help
772	  Base name (without suffix, relative to arch/sh/boot/dts) for the
773	  a DTS file that will be used to produce the DTB linked into the
774	  kernel.
775
776config ZERO_PAGE_OFFSET
777	hex
778	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
779				SH_7751_SOLUTION_ENGINE
780	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
781	default "0x00002000" if PAGE_SIZE_8KB
782	default "0x00001000"
783	help
784	  This sets the default offset of zero page.
785
786config BOOT_LINK_OFFSET
787	hex
788	default "0x00210000" if SH_SHMIN
789	default "0x00400000" if SH_CAYMAN
790	default "0x00810000" if SH_7780_SOLUTION_ENGINE
791	default "0x009e0000" if SH_TITAN
792	default "0x01800000" if SH_SDK7780
793	default "0x02000000" if SH_EDOSK7760
794	default "0x00800000"
795	help
796	  This option allows you to set the link address offset of the zImage.
797	  This can be useful if you are on a board which has a small amount of
798	  memory.
799
800config ENTRY_OFFSET
801	hex
802	default "0x00001000" if PAGE_SIZE_4KB
803	default "0x00002000" if PAGE_SIZE_8KB
804	default "0x00004000" if PAGE_SIZE_16KB
805	default "0x00010000" if PAGE_SIZE_64KB
806	default "0x00000000"
807
808config ROMIMAGE_MMCIF
809	bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
810	depends on CPU_SUBTYPE_SH7724
811	help
812	  Say Y here to include experimental MMCIF loading code in
813	  romImage. With this enabled it is possible to write the romImage
814	  kernel image to an MMC card and boot the kernel straight from
815	  the reset vector. At reset the processor Mask ROM will load the
816	  first part of the romImage which in turn loads the rest the kernel
817	  image to RAM using the MMCIF hardware block.
818
819choice
820	prompt "Kernel command line"
821	optional
822	default CMDLINE_OVERWRITE
823	help
824	  Setting this option allows the kernel command line arguments
825	  to be set.
826
827config CMDLINE_OVERWRITE
828	bool "Overwrite bootloader kernel arguments"
829	help
830	  Given string will overwrite any arguments passed in by
831	  a bootloader.
832
833config CMDLINE_EXTEND
834	bool "Extend bootloader kernel arguments"
835	help
836	  Given string will be concatenated with arguments passed in
837	  by a bootloader.
838
839endchoice
840
841config CMDLINE
842	string "Kernel command line arguments string"
843	depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
844	default "console=ttySC1,115200"
845
846endmenu
847
848menu "Bus options"
849
850config SUPERHYWAY
851	tristate "SuperHyway Bus support"
852	depends on CPU_SUBTYPE_SH4_202
853
854config MAPLE
855	bool "Maple Bus support"
856	depends on SH_DREAMCAST
857	help
858	 The Maple Bus is SEGA's serial communication bus for peripherals
859	 on the Dreamcast. Without this bus support you won't be able to
860	 get your Dreamcast keyboard etc to work, so most users
861	 probably want to say 'Y' here, unless you are only using the
862	 Dreamcast with a serial line terminal or a remote network
863	 connection.
864
865config PCI
866	bool "PCI support"
867	depends on SYS_SUPPORTS_PCI
868	select PCI_DOMAINS
869	select GENERIC_PCI_IOMAP
870	select NO_GENERIC_PCI_IOPORT_MAP
871	help
872	  Find out whether you have a PCI motherboard. PCI is the name of a
873	  bus system, i.e. the way the CPU talks to the other stuff inside
874	  your box. If you have PCI, say Y, otherwise N.
875
876config PCI_DOMAINS
877	bool
878
879source "drivers/pci/Kconfig"
880
881source "drivers/pcmcia/Kconfig"
882
883endmenu
884
885menu "Executable file formats"
886
887source "fs/Kconfig.binfmt"
888
889endmenu
890
891menu "Power management options (EXPERIMENTAL)"
892
893source "kernel/power/Kconfig"
894
895source "drivers/cpuidle/Kconfig"
896
897endmenu
898
899source "net/Kconfig"
900
901source "drivers/Kconfig"
902
903source "fs/Kconfig"
904
905source "arch/sh/Kconfig.debug"
906
907source "security/Kconfig"
908
909source "crypto/Kconfig"
910
911source "lib/Kconfig"
912