xref: /openbmc/linux/arch/sh/Kconfig (revision 62e7ca52)
1config SUPERH
2	def_bool y
3	select ARCH_MIGHT_HAVE_PC_PARPORT
4	select EXPERT
5	select CLKDEV_LOOKUP
6	select HAVE_IDE if HAS_IOPORT_MAP
7	select HAVE_MEMBLOCK
8	select HAVE_MEMBLOCK_NODE_MAP
9	select ARCH_DISCARD_MEMBLOCK
10	select HAVE_OPROFILE
11	select HAVE_GENERIC_DMA_COHERENT
12	select HAVE_ARCH_TRACEHOOK
13	select HAVE_DMA_API_DEBUG
14	select HAVE_DMA_ATTRS
15	select HAVE_PERF_EVENTS
16	select HAVE_DEBUG_BUGVERBOSE
17	select ARCH_HAVE_CUSTOM_GPIO_H
18	select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
19	select PERF_USE_VMALLOC
20	select HAVE_DEBUG_KMEMLEAK
21	select HAVE_KERNEL_GZIP
22	select HAVE_KERNEL_BZIP2
23	select HAVE_KERNEL_LZMA
24	select HAVE_KERNEL_XZ
25	select HAVE_KERNEL_LZO
26	select HAVE_UID16
27	select ARCH_WANT_IPC_PARSE_VERSION
28	select HAVE_SYSCALL_TRACEPOINTS
29	select HAVE_REGS_AND_STACK_ACCESS_API
30	select MAY_HAVE_SPARSE_IRQ
31	select IRQ_FORCED_THREADING
32	select RTC_LIB
33	select GENERIC_ATOMIC64
34	select GENERIC_IRQ_SHOW
35	select GENERIC_SMP_IDLE_THREAD
36	select GENERIC_IDLE_POLL_SETUP
37	select GENERIC_CLOCKEVENTS
38	select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
39	select GENERIC_STRNCPY_FROM_USER
40	select GENERIC_STRNLEN_USER
41	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
42	select MODULES_USE_ELF_RELA
43	select OLD_SIGSUSPEND
44	select OLD_SIGACTION
45	select HAVE_ARCH_AUDITSYSCALL
46	help
47	  The SuperH is a RISC processor targeted for use in embedded systems
48	  and consumer electronics; it was also used in the Sega Dreamcast
49	  gaming console.  The SuperH port has a home page at
50	  <http://www.linux-sh.org/>.
51
52config SUPERH32
53	def_bool ARCH = "sh"
54	select HAVE_KPROBES
55	select HAVE_KRETPROBES
56	select HAVE_IOREMAP_PROT if MMU && !X2TLB
57	select HAVE_FUNCTION_TRACER
58	select HAVE_FTRACE_MCOUNT_RECORD
59	select HAVE_DYNAMIC_FTRACE
60	select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
61	select ARCH_WANT_IPC_PARSE_VERSION
62	select HAVE_FUNCTION_GRAPH_TRACER
63	select HAVE_ARCH_KGDB
64	select HAVE_HW_BREAKPOINT
65	select HAVE_MIXED_BREAKPOINTS_REGS
66	select PERF_EVENTS
67	select ARCH_HIBERNATION_POSSIBLE if MMU
68	select SPARSE_IRQ
69	select HAVE_CC_STACKPROTECTOR
70
71config SUPERH64
72	def_bool ARCH = "sh64"
73	select KALLSYMS
74
75config ARCH_DEFCONFIG
76	string
77	default "arch/sh/configs/shx3_defconfig" if SUPERH32
78	default "arch/sh/configs/cayman_defconfig" if SUPERH64
79
80config RWSEM_GENERIC_SPINLOCK
81	def_bool y
82
83config RWSEM_XCHGADD_ALGORITHM
84	bool
85
86config GENERIC_BUG
87	def_bool y
88	depends on BUG && SUPERH32
89
90config GENERIC_CSUM
91	def_bool y
92	depends on SUPERH64
93
94config GENERIC_HWEIGHT
95	def_bool y
96
97config GENERIC_CALIBRATE_DELAY
98	bool
99
100config GENERIC_LOCKBREAK
101	def_bool y
102	depends on SMP && PREEMPT
103
104config ARCH_SUSPEND_POSSIBLE
105	def_bool n
106
107config ARCH_HIBERNATION_POSSIBLE
108	def_bool n
109
110config SYS_SUPPORTS_APM_EMULATION
111	bool
112	select ARCH_SUSPEND_POSSIBLE
113
114config SYS_SUPPORTS_HUGETLBFS
115	bool
116
117config SYS_SUPPORTS_SMP
118	bool
119
120config SYS_SUPPORTS_NUMA
121	bool
122
123config SYS_SUPPORTS_PCI
124	bool
125
126config STACKTRACE_SUPPORT
127	def_bool y
128
129config LOCKDEP_SUPPORT
130	def_bool y
131
132config HAVE_LATENCYTOP_SUPPORT
133	def_bool y
134
135config ARCH_HAS_ILOG2_U32
136	def_bool n
137
138config ARCH_HAS_ILOG2_U64
139	def_bool n
140
141config NO_IOPORT_MAP
142	def_bool !PCI
143	depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
144		   !SH_HP6XX && !SH_SOLUTION_ENGINE
145
146config IO_TRAPPED
147	bool
148
149config SWAP_IO_SPACE
150	bool
151
152config DMA_COHERENT
153	bool
154
155config DMA_NONCOHERENT
156	def_bool !DMA_COHERENT
157
158config NEED_DMA_MAP_STATE
159	def_bool DMA_NONCOHERENT
160
161config NEED_SG_DMA_LENGTH
162	def_bool y
163
164source "init/Kconfig"
165
166source "kernel/Kconfig.freezer"
167
168menu "System type"
169
170#
171# Processor families
172#
173config CPU_SH2
174	bool
175
176config CPU_SH2A
177	bool
178	select CPU_SH2
179	select UNCACHED_MAPPING
180
181config CPU_SH3
182	bool
183	select CPU_HAS_INTEVT
184	select CPU_HAS_SR_RB
185	select SYS_SUPPORTS_SH_TMU
186
187config CPU_SH4
188	bool
189	select CPU_HAS_INTEVT
190	select CPU_HAS_SR_RB
191	select CPU_HAS_FPU if !CPU_SH4AL_DSP
192	select SYS_SUPPORTS_SH_TMU
193	select SYS_SUPPORTS_HUGETLBFS if MMU
194
195config CPU_SH4A
196	bool
197	select CPU_SH4
198
199config CPU_SH4AL_DSP
200	bool
201	select CPU_SH4A
202	select CPU_HAS_DSP
203
204config CPU_SH5
205	bool
206	select CPU_HAS_FPU
207	select SYS_SUPPORTS_SH_TMU
208	select SYS_SUPPORTS_HUGETLBFS if MMU
209
210config CPU_SHX2
211	bool
212
213config CPU_SHX3
214	bool
215	select DMA_COHERENT
216	select SYS_SUPPORTS_SMP
217	select SYS_SUPPORTS_NUMA
218
219config ARCH_SHMOBILE
220	bool
221	select ARCH_SUSPEND_POSSIBLE
222	select PM
223	select PM_RUNTIME
224
225config CPU_HAS_PMU
226       depends on CPU_SH4 || CPU_SH4A
227       default y
228       bool
229
230if SUPERH32
231
232choice
233	prompt "Processor sub-type selection"
234
235#
236# Processor subtypes
237#
238
239# SH-2 Processor Support
240
241config CPU_SUBTYPE_SH7619
242	bool "Support SH7619 processor"
243	select CPU_SH2
244	select SYS_SUPPORTS_SH_CMT
245
246# SH-2A Processor Support
247
248config CPU_SUBTYPE_SH7201
249	bool "Support SH7201 processor"
250	select CPU_SH2A
251	select CPU_HAS_FPU
252	select SYS_SUPPORTS_SH_MTU2
253
254config CPU_SUBTYPE_SH7203
255	bool "Support SH7203 processor"
256	select CPU_SH2A
257	select CPU_HAS_FPU
258	select SYS_SUPPORTS_SH_CMT
259	select SYS_SUPPORTS_SH_MTU2
260	select ARCH_WANT_OPTIONAL_GPIOLIB
261	select PINCTRL
262
263config CPU_SUBTYPE_SH7206
264	bool "Support SH7206 processor"
265	select CPU_SH2A
266	select SYS_SUPPORTS_SH_CMT
267	select SYS_SUPPORTS_SH_MTU2
268
269config CPU_SUBTYPE_SH7263
270	bool "Support SH7263 processor"
271	select CPU_SH2A
272	select CPU_HAS_FPU
273	select SYS_SUPPORTS_SH_CMT
274	select SYS_SUPPORTS_SH_MTU2
275
276config CPU_SUBTYPE_SH7264
277	bool "Support SH7264 processor"
278	select CPU_SH2A
279	select CPU_HAS_FPU
280	select SYS_SUPPORTS_SH_CMT
281	select SYS_SUPPORTS_SH_MTU2
282	select PINCTRL
283
284config CPU_SUBTYPE_SH7269
285	bool "Support SH7269 processor"
286	select CPU_SH2A
287	select CPU_HAS_FPU
288	select SYS_SUPPORTS_SH_CMT
289	select SYS_SUPPORTS_SH_MTU2
290	select PINCTRL
291
292config CPU_SUBTYPE_MXG
293	bool "Support MX-G processor"
294	select CPU_SH2A
295	select SYS_SUPPORTS_SH_MTU2
296	help
297	  Select MX-G if running on an R8A03022BG part.
298
299# SH-3 Processor Support
300
301config CPU_SUBTYPE_SH7705
302	bool "Support SH7705 processor"
303	select CPU_SH3
304
305config CPU_SUBTYPE_SH7706
306	bool "Support SH7706 processor"
307	select CPU_SH3
308	help
309	  Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
310
311config CPU_SUBTYPE_SH7707
312	bool "Support SH7707 processor"
313	select CPU_SH3
314	help
315	  Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
316
317config CPU_SUBTYPE_SH7708
318	bool "Support SH7708 processor"
319	select CPU_SH3
320	help
321	  Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
322	  if you have a 100 Mhz SH-3 HD6417708R CPU.
323
324config CPU_SUBTYPE_SH7709
325	bool "Support SH7709 processor"
326	select CPU_SH3
327	help
328	  Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
329
330config CPU_SUBTYPE_SH7710
331	bool "Support SH7710 processor"
332	select CPU_SH3
333	select CPU_HAS_DSP
334	help
335	  Select SH7710 if you have a SH3-DSP SH7710 CPU.
336
337config CPU_SUBTYPE_SH7712
338	bool "Support SH7712 processor"
339	select CPU_SH3
340	select CPU_HAS_DSP
341	help
342	  Select SH7712 if you have a SH3-DSP SH7712 CPU.
343
344config CPU_SUBTYPE_SH7720
345	bool "Support SH7720 processor"
346	select CPU_SH3
347	select CPU_HAS_DSP
348	select SYS_SUPPORTS_SH_CMT
349	select ARCH_WANT_OPTIONAL_GPIOLIB
350	select USB_OHCI_SH if USB_OHCI_HCD
351	select PINCTRL
352	help
353	  Select SH7720 if you have a SH3-DSP SH7720 CPU.
354
355config CPU_SUBTYPE_SH7721
356	bool "Support SH7721 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	help
362	  Select SH7721 if you have a SH3-DSP SH7721 CPU.
363
364# SH-4 Processor Support
365
366config CPU_SUBTYPE_SH7750
367	bool "Support SH7750 processor"
368	select CPU_SH4
369	help
370	  Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
371
372config CPU_SUBTYPE_SH7091
373	bool "Support SH7091 processor"
374	select CPU_SH4
375	help
376	  Select SH7091 if you have an SH-4 based Sega device (such as
377	  the Dreamcast, Naomi, and Naomi 2).
378
379config CPU_SUBTYPE_SH7750R
380	bool "Support SH7750R processor"
381	select CPU_SH4
382
383config CPU_SUBTYPE_SH7750S
384	bool "Support SH7750S processor"
385	select CPU_SH4
386
387config CPU_SUBTYPE_SH7751
388	bool "Support SH7751 processor"
389	select CPU_SH4
390	help
391	  Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
392	  or if you have a HD6417751R CPU.
393
394config CPU_SUBTYPE_SH7751R
395	bool "Support SH7751R processor"
396	select CPU_SH4
397
398config CPU_SUBTYPE_SH7760
399	bool "Support SH7760 processor"
400	select CPU_SH4
401
402config CPU_SUBTYPE_SH4_202
403	bool "Support SH4-202 processor"
404	select CPU_SH4
405
406# SH-4A Processor Support
407
408config CPU_SUBTYPE_SH7723
409	bool "Support SH7723 processor"
410	select CPU_SH4A
411	select CPU_SHX2
412	select ARCH_SHMOBILE
413	select ARCH_SPARSEMEM_ENABLE
414	select SYS_SUPPORTS_SH_CMT
415	select ARCH_WANT_OPTIONAL_GPIOLIB
416	select PINCTRL
417	help
418	  Select SH7723 if you have an SH-MobileR2 CPU.
419
420config CPU_SUBTYPE_SH7724
421	bool "Support SH7724 processor"
422	select CPU_SH4A
423	select CPU_SHX2
424	select ARCH_SHMOBILE
425	select ARCH_SPARSEMEM_ENABLE
426	select SYS_SUPPORTS_SH_CMT
427	select ARCH_WANT_OPTIONAL_GPIOLIB
428	select PINCTRL
429	help
430	  Select SH7724 if you have an SH-MobileR2R CPU.
431
432config CPU_SUBTYPE_SH7734
433	bool "Support SH7734 processor"
434	select CPU_SH4A
435	select CPU_SHX2
436	select ARCH_WANT_OPTIONAL_GPIOLIB
437	select PINCTRL
438	help
439	  Select SH7734 if you have a SH4A SH7734 CPU.
440
441config CPU_SUBTYPE_SH7757
442	bool "Support SH7757 processor"
443	select CPU_SH4A
444	select CPU_SHX2
445	select ARCH_WANT_OPTIONAL_GPIOLIB
446	select PINCTRL
447	help
448	  Select SH7757 if you have a SH4A SH7757 CPU.
449
450config CPU_SUBTYPE_SH7763
451	bool "Support SH7763 processor"
452	select CPU_SH4A
453	select USB_OHCI_SH if USB_OHCI_HCD
454	help
455	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
456
457config CPU_SUBTYPE_SH7770
458	bool "Support SH7770 processor"
459	select CPU_SH4A
460
461config CPU_SUBTYPE_SH7780
462	bool "Support SH7780 processor"
463	select CPU_SH4A
464
465config CPU_SUBTYPE_SH7785
466	bool "Support SH7785 processor"
467	select CPU_SH4A
468	select CPU_SHX2
469	select ARCH_SPARSEMEM_ENABLE
470	select SYS_SUPPORTS_NUMA
471	select ARCH_WANT_OPTIONAL_GPIOLIB
472	select PINCTRL
473
474config CPU_SUBTYPE_SH7786
475	bool "Support SH7786 processor"
476	select CPU_SH4A
477	select CPU_SHX3
478	select CPU_HAS_PTEAEX
479	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
480	select ARCH_WANT_OPTIONAL_GPIOLIB
481	select USB_OHCI_SH if USB_OHCI_HCD
482	select USB_EHCI_SH if USB_EHCI_HCD
483	select PINCTRL
484
485config CPU_SUBTYPE_SHX3
486	bool "Support SH-X3 processor"
487	select CPU_SH4A
488	select CPU_SHX3
489	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
490	select ARCH_REQUIRE_GPIOLIB
491	select PINCTRL
492
493# SH4AL-DSP Processor Support
494
495config CPU_SUBTYPE_SH7343
496	bool "Support SH7343 processor"
497	select CPU_SH4AL_DSP
498	select ARCH_SHMOBILE
499	select SYS_SUPPORTS_SH_CMT
500
501config CPU_SUBTYPE_SH7722
502	bool "Support SH7722 processor"
503	select CPU_SH4AL_DSP
504	select CPU_SHX2
505	select ARCH_SHMOBILE
506	select ARCH_SPARSEMEM_ENABLE
507	select SYS_SUPPORTS_NUMA
508	select SYS_SUPPORTS_SH_CMT
509	select ARCH_WANT_OPTIONAL_GPIOLIB
510	select PINCTRL
511
512config CPU_SUBTYPE_SH7366
513	bool "Support SH7366 processor"
514	select CPU_SH4AL_DSP
515	select CPU_SHX2
516	select ARCH_SHMOBILE
517	select ARCH_SPARSEMEM_ENABLE
518	select SYS_SUPPORTS_NUMA
519	select SYS_SUPPORTS_SH_CMT
520
521endchoice
522
523endif
524
525if SUPERH64
526
527choice
528	prompt "Processor sub-type selection"
529
530# SH-5 Processor Support
531
532config CPU_SUBTYPE_SH5_101
533	bool "Support SH5-101 processor"
534	select CPU_SH5
535
536config CPU_SUBTYPE_SH5_103
537	bool "Support SH5-103 processor"
538	select CPU_SH5
539
540endchoice
541
542endif
543
544source "arch/sh/mm/Kconfig"
545
546source "arch/sh/Kconfig.cpu"
547
548source "arch/sh/boards/Kconfig"
549
550menu "Timer and clock configuration"
551
552config SH_PCLK_FREQ
553	int "Peripheral clock frequency (in Hz)"
554	depends on SH_CLK_CPG_LEGACY
555	default "31250000" if CPU_SUBTYPE_SH7619
556	default "33333333" if CPU_SUBTYPE_SH7770 || \
557			      CPU_SUBTYPE_SH7760 || \
558			      CPU_SUBTYPE_SH7705 || \
559			      CPU_SUBTYPE_SH7203 || \
560			      CPU_SUBTYPE_SH7206 || \
561			      CPU_SUBTYPE_SH7263 || \
562			      CPU_SUBTYPE_MXG
563	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
564	default "66000000" if CPU_SUBTYPE_SH4_202
565	default "50000000"
566	help
567	  This option is used to specify the peripheral clock frequency.
568	  This is necessary for determining the reference clock value on
569	  platforms lacking an RTC.
570
571config SH_CLK_CPG
572	def_bool y
573
574config SH_CLK_CPG_LEGACY
575	depends on SH_CLK_CPG
576	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
577		      !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
578		      !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
579		      !CPU_SUBTYPE_SH7269
580
581endmenu
582
583menu "CPU Frequency scaling"
584source "drivers/cpufreq/Kconfig"
585endmenu
586
587source "arch/sh/drivers/Kconfig"
588
589endmenu
590
591menu "Kernel features"
592
593source kernel/Kconfig.hz
594
595config KEXEC
596	bool "kexec system call (EXPERIMENTAL)"
597	depends on SUPERH32 && MMU
598	help
599	  kexec is a system call that implements the ability to shutdown your
600	  current kernel, and to start another kernel.  It is like a reboot
601	  but it is independent of the system firmware.  And like a reboot
602	  you can start any kernel with it, not just Linux.
603
604	  The name comes from the similarity to the exec system call.
605
606	  It is an ongoing process to be certain the hardware in a machine
607	  is properly shutdown, so do not be surprised if this code does not
608	  initially work for you.  As of this writing the exact hardware
609	  interface is strongly in flux, so no good recommendation can be
610	  made.
611
612config CRASH_DUMP
613	bool "kernel crash dumps (EXPERIMENTAL)"
614	depends on SUPERH32 && BROKEN_ON_SMP
615	help
616	  Generate crash dump after being started by kexec.
617	  This should be normally only set in special crash dump kernels
618	  which are loaded in the main kernel with kexec-tools into
619	  a specially reserved region and then later executed after
620	  a crash by kdump/kexec. The crash dump kernel must be compiled
621	  to a memory address not used by the main kernel using
622	  PHYSICAL_START.
623
624	  For more details see Documentation/kdump/kdump.txt
625
626config KEXEC_JUMP
627	bool "kexec jump (EXPERIMENTAL)"
628	depends on SUPERH32 && KEXEC && HIBERNATION
629	help
630	  Jump between original kernel and kexeced kernel and invoke
631	  code via KEXEC
632
633config PHYSICAL_START
634	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
635	default MEMORY_START
636	---help---
637	  This gives the physical address where the kernel is loaded
638	  and is ordinarily the same as MEMORY_START.
639
640	  Different values are primarily used in the case of kexec on panic
641	  where the fail safe kernel needs to run at a different address
642	  than the panic-ed kernel.
643
644config SECCOMP
645	bool "Enable seccomp to safely compute untrusted bytecode"
646	depends on PROC_FS
647	help
648	  This kernel feature is useful for number crunching applications
649	  that may need to compute untrusted bytecode during their
650	  execution. By using pipes or other transports made available to
651	  the process as file descriptors supporting the read/write
652	  syscalls, it's possible to isolate those applications in
653	  their own address space using seccomp. Once seccomp is
654	  enabled via prctl, it cannot be disabled and the task is only
655	  allowed to execute a few safe syscalls defined by each seccomp
656	  mode.
657
658	  If unsure, say N.
659
660config SMP
661	bool "Symmetric multi-processing support"
662	depends on SYS_SUPPORTS_SMP
663	---help---
664	  This enables support for systems with more than one CPU. If you have
665	  a system with only one CPU, say N. If you have a system with more
666	  than one CPU, say Y.
667
668	  If you say N here, the kernel will run on uni- and multiprocessor
669	  machines, but will use only one CPU of a multiprocessor machine. If
670	  you say Y here, the kernel will run on many, but not all,
671	  uniprocessor machines. On a uniprocessor machine, the kernel
672	  will run faster if you say N here.
673
674	  People using multiprocessor machines who say Y here should also say
675	  Y to "Enhanced Real Time Clock Support", below.
676
677	  See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
678	  available at <http://www.tldp.org/docs.html#howto>.
679
680	  If you don't know what to do here, say N.
681
682config NR_CPUS
683	int "Maximum number of CPUs (2-32)"
684	range 2 32
685	depends on SMP
686	default "4" if CPU_SUBTYPE_SHX3
687	default "2"
688	help
689	  This allows you to specify the maximum number of CPUs which this
690	  kernel will support.  The maximum supported value is 32 and the
691	  minimum value which makes sense is 2.
692
693	  This is purely to save memory - each supported CPU adds
694	  approximately eight kilobytes to the kernel image.
695
696config HOTPLUG_CPU
697	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
698	depends on SMP
699	help
700	  Say Y here to experiment with turning CPUs off and on.  CPUs
701	  can be controlled through /sys/devices/system/cpu.
702
703source "kernel/Kconfig.preempt"
704
705config GUSA
706	def_bool y
707	depends on !SMP && SUPERH32
708	help
709	  This enables support for gUSA (general UserSpace Atomicity).
710	  This is the default implementation for both UP and non-ll/sc
711	  CPUs, and is used by the libc, amongst others.
712
713	  For additional information, design information can be found
714	  in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
715
716	  This should only be disabled for special cases where alternate
717	  atomicity implementations exist.
718
719config GUSA_RB
720	bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
721	depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
722	help
723	  Enabling this option will allow the kernel to implement some
724	  atomic operations using a software implementation of load-locked/
725	  store-conditional (LLSC). On machines which do not have hardware
726	  LLSC, this should be more efficient than the other alternative of
727	  disabling interrupts around the atomic sequence.
728
729config HW_PERF_EVENTS
730	bool "Enable hardware performance counter support for perf events"
731	depends on PERF_EVENTS && CPU_HAS_PMU
732	default y
733	help
734	  Enable hardware performance counter support for perf events. If
735	  disabled, perf events will use software events only.
736
737source "drivers/sh/Kconfig"
738
739endmenu
740
741menu "Boot options"
742
743config ZERO_PAGE_OFFSET
744	hex
745	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
746				SH_7751_SOLUTION_ENGINE
747	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
748	default "0x00002000" if PAGE_SIZE_8KB
749	default "0x00001000"
750	help
751	  This sets the default offset of zero page.
752
753config BOOT_LINK_OFFSET
754	hex
755	default "0x00210000" if SH_SHMIN
756	default "0x00400000" if SH_CAYMAN
757	default "0x00810000" if SH_7780_SOLUTION_ENGINE
758	default "0x009e0000" if SH_TITAN
759	default "0x01800000" if SH_SDK7780
760	default "0x02000000" if SH_EDOSK7760
761	default "0x00800000"
762	help
763	  This option allows you to set the link address offset of the zImage.
764	  This can be useful if you are on a board which has a small amount of
765	  memory.
766
767config ENTRY_OFFSET
768	hex
769	default "0x00001000" if PAGE_SIZE_4KB
770	default "0x00002000" if PAGE_SIZE_8KB
771	default "0x00004000" if PAGE_SIZE_16KB
772	default "0x00010000" if PAGE_SIZE_64KB
773	default "0x00000000"
774
775config ROMIMAGE_MMCIF
776	bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
777	depends on CPU_SUBTYPE_SH7724
778	help
779	  Say Y here to include experimental MMCIF loading code in
780	  romImage. With this enabled it is possible to write the romImage
781	  kernel image to an MMC card and boot the kernel straight from
782	  the reset vector. At reset the processor Mask ROM will load the
783	  first part of the romImage which in turn loads the rest the kernel
784	  image to RAM using the MMCIF hardware block.
785
786choice
787	prompt "Kernel command line"
788	optional
789	default CMDLINE_OVERWRITE
790	help
791	  Setting this option allows the kernel command line arguments
792	  to be set.
793
794config CMDLINE_OVERWRITE
795	bool "Overwrite bootloader kernel arguments"
796	help
797	  Given string will overwrite any arguments passed in by
798	  a bootloader.
799
800config CMDLINE_EXTEND
801	bool "Extend bootloader kernel arguments"
802	help
803	  Given string will be concatenated with arguments passed in
804	  by a bootloader.
805
806endchoice
807
808config CMDLINE
809	string "Kernel command line arguments string"
810	depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
811	default "console=ttySC1,115200"
812
813endmenu
814
815menu "Bus options"
816
817config SUPERHYWAY
818	tristate "SuperHyway Bus support"
819	depends on CPU_SUBTYPE_SH4_202
820
821config MAPLE
822	bool "Maple Bus support"
823	depends on SH_DREAMCAST
824	help
825	 The Maple Bus is SEGA's serial communication bus for peripherals
826	 on the Dreamcast. Without this bus support you won't be able to
827	 get your Dreamcast keyboard etc to work, so most users
828	 probably want to say 'Y' here, unless you are only using the
829	 Dreamcast with a serial line terminal or a remote network
830	 connection.
831
832config PCI
833	bool "PCI support"
834	depends on SYS_SUPPORTS_PCI
835	select PCI_DOMAINS
836	select GENERIC_PCI_IOMAP
837	select NO_GENERIC_PCI_IOPORT_MAP
838	help
839	  Find out whether you have a PCI motherboard. PCI is the name of a
840	  bus system, i.e. the way the CPU talks to the other stuff inside
841	  your box. If you have PCI, say Y, otherwise N.
842
843config PCI_DOMAINS
844	bool
845
846source "drivers/pci/pcie/Kconfig"
847
848source "drivers/pci/Kconfig"
849
850source "drivers/pcmcia/Kconfig"
851
852source "drivers/pci/hotplug/Kconfig"
853
854endmenu
855
856menu "Executable file formats"
857
858source "fs/Kconfig.binfmt"
859
860endmenu
861
862menu "Power management options (EXPERIMENTAL)"
863
864source "kernel/power/Kconfig"
865
866source "drivers/cpuidle/Kconfig"
867
868endmenu
869
870source "net/Kconfig"
871
872source "drivers/Kconfig"
873
874source "fs/Kconfig"
875
876source "arch/sh/Kconfig.debug"
877
878source "security/Kconfig"
879
880source "crypto/Kconfig"
881
882source "lib/Kconfig"
883