xref: /openbmc/linux/arch/sh/Kconfig (revision 4f3c8320)
1# SPDX-License-Identifier: GPL-2.0
2config SUPERH
3	def_bool y
4	select ARCH_32BIT_OFF_T
5	select ARCH_HAVE_CUSTOM_GPIO_H
6	select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
7	select ARCH_HAS_BINFMT_FLAT if !MMU
8	select ARCH_HAS_GIGANTIC_PAGE
9	select ARCH_HAS_GCOV_PROFILE_ALL
10	select ARCH_HAS_PTE_SPECIAL
11	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
12	select ARCH_HIBERNATION_POSSIBLE if MMU
13	select ARCH_MIGHT_HAVE_PC_PARPORT
14	select ARCH_WANT_IPC_PARSE_VERSION
15	select CLKDEV_LOOKUP
16	select CPU_NO_EFFICIENT_FFS
17	select DMA_DECLARE_COHERENT
18	select GENERIC_ATOMIC64
19	select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
20	select GENERIC_IDLE_POLL_SETUP
21	select GENERIC_IRQ_SHOW
22	select GENERIC_PCI_IOMAP if PCI
23	select GENERIC_SCHED_CLOCK
24	select GENERIC_STRNCPY_FROM_USER
25	select GENERIC_STRNLEN_USER
26	select GENERIC_SMP_IDLE_THREAD
27	select GUP_GET_PTE_LOW_HIGH if X2TLB
28	select HAVE_ARCH_AUDITSYSCALL
29	select HAVE_ARCH_KGDB
30	select HAVE_ARCH_SECCOMP_FILTER
31	select HAVE_ARCH_TRACEHOOK
32	select HAVE_COPY_THREAD_TLS
33	select HAVE_DEBUG_BUGVERBOSE
34	select HAVE_DEBUG_KMEMLEAK
35	select HAVE_DYNAMIC_FTRACE
36	select HAVE_FAST_GUP if MMU
37	select HAVE_FUNCTION_GRAPH_TRACER
38	select HAVE_FUNCTION_TRACER
39	select HAVE_FUTEX_CMPXCHG if FUTEX
40	select HAVE_FTRACE_MCOUNT_RECORD
41	select HAVE_HW_BREAKPOINT
42	select HAVE_IDE if HAS_IOPORT_MAP
43	select HAVE_IOREMAP_PROT if MMU && !X2TLB
44	select HAVE_KERNEL_BZIP2
45	select HAVE_KERNEL_GZIP
46	select HAVE_KERNEL_LZMA
47	select HAVE_KERNEL_LZO
48	select HAVE_KERNEL_XZ
49	select HAVE_KPROBES
50	select HAVE_KRETPROBES
51	select HAVE_MIXED_BREAKPOINTS_REGS
52	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
53	select HAVE_NMI
54	select HAVE_OPROFILE
55	select HAVE_PATA_PLATFORM
56	select HAVE_PERF_EVENTS
57	select HAVE_REGS_AND_STACK_ACCESS_API
58	select HAVE_UID16
59	select HAVE_STACKPROTECTOR
60	select HAVE_SYSCALL_TRACEPOINTS
61	select IRQ_FORCED_THREADING
62	select MAY_HAVE_SPARSE_IRQ
63	select MODULES_USE_ELF_RELA
64	select NEED_SG_DMA_LENGTH
65	select NO_DMA if !MMU && !DMA_COHERENT
66	select NO_GENERIC_PCI_IOPORT_MAP if PCI
67	select OLD_SIGACTION
68	select OLD_SIGSUSPEND
69	select PCI_DOMAINS if PCI
70	select PERF_EVENTS
71	select PERF_USE_VMALLOC
72	select RTC_LIB
73	select SET_FS
74	select SPARSE_IRQ
75	help
76	  The SuperH is a RISC processor targeted for use in embedded systems
77	  and consumer electronics; it was also used in the Sega Dreamcast
78	  gaming console.  The SuperH port has a home page at
79	  <http://www.linux-sh.org/>.
80
81config GENERIC_BUG
82	def_bool y
83	depends on BUG
84
85config GENERIC_HWEIGHT
86	def_bool y
87
88config GENERIC_CALIBRATE_DELAY
89	bool
90
91config GENERIC_LOCKBREAK
92	def_bool y
93	depends on SMP && PREEMPTION
94
95config ARCH_SUSPEND_POSSIBLE
96	def_bool n
97
98config ARCH_HIBERNATION_POSSIBLE
99	def_bool n
100
101config SYS_SUPPORTS_APM_EMULATION
102	bool
103	select ARCH_SUSPEND_POSSIBLE
104
105config SYS_SUPPORTS_HUGETLBFS
106	bool
107
108config SYS_SUPPORTS_SMP
109	bool
110
111config SYS_SUPPORTS_NUMA
112	bool
113
114config STACKTRACE_SUPPORT
115	def_bool y
116
117config LOCKDEP_SUPPORT
118	def_bool y
119
120config ARCH_HAS_ILOG2_U32
121	def_bool n
122
123config ARCH_HAS_ILOG2_U64
124	def_bool n
125
126config NO_IOPORT_MAP
127	def_bool !PCI
128	depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
129		   !SH_SOLUTION_ENGINE
130
131config IO_TRAPPED
132	bool
133
134config SWAP_IO_SPACE
135	bool
136
137config DMA_COHERENT
138	bool
139
140config DMA_NONCOHERENT
141	def_bool !NO_DMA && !DMA_COHERENT
142	select ARCH_HAS_DMA_PREP_COHERENT
143	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
144	select DMA_DIRECT_REMAP
145
146config PGTABLE_LEVELS
147	default 3 if X2TLB
148	default 2
149
150menu "System type"
151
152#
153# Processor families
154#
155config CPU_SH2
156	bool
157	select SH_INTC
158
159config CPU_SH2A
160	bool
161	select CPU_SH2
162	select UNCACHED_MAPPING
163
164config CPU_J2
165	bool
166	select CPU_SH2
167	select OF
168	select OF_EARLY_FLATTREE
169
170config CPU_SH3
171	bool
172	select CPU_HAS_INTEVT
173	select CPU_HAS_SR_RB
174	select SH_INTC
175	select SYS_SUPPORTS_SH_TMU
176
177config CPU_SH4
178	bool
179	select CPU_HAS_INTEVT
180	select CPU_HAS_SR_RB
181	select CPU_HAS_FPU if !CPU_SH4AL_DSP
182	select SH_INTC
183	select SYS_SUPPORTS_SH_TMU
184	select SYS_SUPPORTS_HUGETLBFS if MMU
185
186config CPU_SH4A
187	bool
188	select CPU_SH4
189
190config CPU_SH4AL_DSP
191	bool
192	select CPU_SH4A
193	select CPU_HAS_DSP
194
195config CPU_SHX2
196	bool
197
198config CPU_SHX3
199	bool
200	select DMA_COHERENT
201	select SYS_SUPPORTS_SMP
202	select SYS_SUPPORTS_NUMA
203
204config ARCH_SHMOBILE
205	bool
206	select ARCH_SUSPEND_POSSIBLE
207	select PM
208
209config CPU_HAS_PMU
210       depends on CPU_SH4 || CPU_SH4A
211       default y
212       bool
213
214choice
215	prompt "Processor sub-type selection"
216
217#
218# Processor subtypes
219#
220
221# SH-2 Processor Support
222
223config CPU_SUBTYPE_SH7619
224	bool "Support SH7619 processor"
225	select CPU_SH2
226	select SYS_SUPPORTS_SH_CMT
227
228config CPU_SUBTYPE_J2
229	bool "Support J2 processor"
230	select CPU_J2
231	select SYS_SUPPORTS_SMP
232	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
233
234# SH-2A Processor Support
235
236config CPU_SUBTYPE_SH7201
237	bool "Support SH7201 processor"
238	select CPU_SH2A
239	select CPU_HAS_FPU
240	select SYS_SUPPORTS_SH_MTU2
241
242config CPU_SUBTYPE_SH7203
243	bool "Support SH7203 processor"
244	select CPU_SH2A
245	select CPU_HAS_FPU
246	select SYS_SUPPORTS_SH_CMT
247	select SYS_SUPPORTS_SH_MTU2
248	select PINCTRL
249
250config CPU_SUBTYPE_SH7206
251	bool "Support SH7206 processor"
252	select CPU_SH2A
253	select SYS_SUPPORTS_SH_CMT
254	select SYS_SUPPORTS_SH_MTU2
255
256config CPU_SUBTYPE_SH7263
257	bool "Support SH7263 processor"
258	select CPU_SH2A
259	select CPU_HAS_FPU
260	select SYS_SUPPORTS_SH_CMT
261	select SYS_SUPPORTS_SH_MTU2
262
263config CPU_SUBTYPE_SH7264
264	bool "Support SH7264 processor"
265	select CPU_SH2A
266	select CPU_HAS_FPU
267	select SYS_SUPPORTS_SH_CMT
268	select SYS_SUPPORTS_SH_MTU2
269	select PINCTRL
270
271config CPU_SUBTYPE_SH7269
272	bool "Support SH7269 processor"
273	select CPU_SH2A
274	select CPU_HAS_FPU
275	select SYS_SUPPORTS_SH_CMT
276	select SYS_SUPPORTS_SH_MTU2
277	select PINCTRL
278
279config CPU_SUBTYPE_MXG
280	bool "Support MX-G processor"
281	select CPU_SH2A
282	select SYS_SUPPORTS_SH_MTU2
283	help
284	  Select MX-G if running on an R8A03022BG part.
285
286# SH-3 Processor Support
287
288config CPU_SUBTYPE_SH7705
289	bool "Support SH7705 processor"
290	select CPU_SH3
291
292config CPU_SUBTYPE_SH7706
293	bool "Support SH7706 processor"
294	select CPU_SH3
295	help
296	  Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
297
298config CPU_SUBTYPE_SH7707
299	bool "Support SH7707 processor"
300	select CPU_SH3
301	help
302	  Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
303
304config CPU_SUBTYPE_SH7708
305	bool "Support SH7708 processor"
306	select CPU_SH3
307	help
308	  Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
309	  if you have a 100 Mhz SH-3 HD6417708R CPU.
310
311config CPU_SUBTYPE_SH7709
312	bool "Support SH7709 processor"
313	select CPU_SH3
314	help
315	  Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
316
317config CPU_SUBTYPE_SH7710
318	bool "Support SH7710 processor"
319	select CPU_SH3
320	select CPU_HAS_DSP
321	help
322	  Select SH7710 if you have a SH3-DSP SH7710 CPU.
323
324config CPU_SUBTYPE_SH7712
325	bool "Support SH7712 processor"
326	select CPU_SH3
327	select CPU_HAS_DSP
328	help
329	  Select SH7712 if you have a SH3-DSP SH7712 CPU.
330
331config CPU_SUBTYPE_SH7720
332	bool "Support SH7720 processor"
333	select CPU_SH3
334	select CPU_HAS_DSP
335	select SYS_SUPPORTS_SH_CMT
336	select USB_OHCI_SH if USB_OHCI_HCD
337	select PINCTRL
338	help
339	  Select SH7720 if you have a SH3-DSP SH7720 CPU.
340
341config CPU_SUBTYPE_SH7721
342	bool "Support SH7721 processor"
343	select CPU_SH3
344	select CPU_HAS_DSP
345	select SYS_SUPPORTS_SH_CMT
346	select USB_OHCI_SH if USB_OHCI_HCD
347	help
348	  Select SH7721 if you have a SH3-DSP SH7721 CPU.
349
350# SH-4 Processor Support
351
352config CPU_SUBTYPE_SH7750
353	bool "Support SH7750 processor"
354	select CPU_SH4
355	help
356	  Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
357
358config CPU_SUBTYPE_SH7091
359	bool "Support SH7091 processor"
360	select CPU_SH4
361	help
362	  Select SH7091 if you have an SH-4 based Sega device (such as
363	  the Dreamcast, Naomi, and Naomi 2).
364
365config CPU_SUBTYPE_SH7750R
366	bool "Support SH7750R processor"
367	select CPU_SH4
368
369config CPU_SUBTYPE_SH7750S
370	bool "Support SH7750S processor"
371	select CPU_SH4
372
373config CPU_SUBTYPE_SH7751
374	bool "Support SH7751 processor"
375	select CPU_SH4
376	help
377	  Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
378	  or if you have a HD6417751R CPU.
379
380config CPU_SUBTYPE_SH7751R
381	bool "Support SH7751R processor"
382	select CPU_SH4
383
384config CPU_SUBTYPE_SH7760
385	bool "Support SH7760 processor"
386	select CPU_SH4
387
388config CPU_SUBTYPE_SH4_202
389	bool "Support SH4-202 processor"
390	select CPU_SH4
391
392# SH-4A Processor Support
393
394config CPU_SUBTYPE_SH7723
395	bool "Support SH7723 processor"
396	select CPU_SH4A
397	select CPU_SHX2
398	select ARCH_SHMOBILE
399	select ARCH_SPARSEMEM_ENABLE
400	select SYS_SUPPORTS_SH_CMT
401	select PINCTRL
402	help
403	  Select SH7723 if you have an SH-MobileR2 CPU.
404
405config CPU_SUBTYPE_SH7724
406	bool "Support SH7724 processor"
407	select CPU_SH4A
408	select CPU_SHX2
409	select ARCH_SHMOBILE
410	select ARCH_SPARSEMEM_ENABLE
411	select SYS_SUPPORTS_SH_CMT
412	select PINCTRL
413	help
414	  Select SH7724 if you have an SH-MobileR2R CPU.
415
416config CPU_SUBTYPE_SH7734
417	bool "Support SH7734 processor"
418	select CPU_SH4A
419	select CPU_SHX2
420	select PINCTRL
421	help
422	  Select SH7734 if you have a SH4A SH7734 CPU.
423
424config CPU_SUBTYPE_SH7757
425	bool "Support SH7757 processor"
426	select CPU_SH4A
427	select CPU_SHX2
428	select PINCTRL
429	help
430	  Select SH7757 if you have a SH4A SH7757 CPU.
431
432config CPU_SUBTYPE_SH7763
433	bool "Support SH7763 processor"
434	select CPU_SH4A
435	select USB_OHCI_SH if USB_OHCI_HCD
436	help
437	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
438
439config CPU_SUBTYPE_SH7770
440	bool "Support SH7770 processor"
441	select CPU_SH4A
442
443config CPU_SUBTYPE_SH7780
444	bool "Support SH7780 processor"
445	select CPU_SH4A
446
447config CPU_SUBTYPE_SH7785
448	bool "Support SH7785 processor"
449	select CPU_SH4A
450	select CPU_SHX2
451	select ARCH_SPARSEMEM_ENABLE
452	select SYS_SUPPORTS_NUMA
453	select PINCTRL
454
455config CPU_SUBTYPE_SH7786
456	bool "Support SH7786 processor"
457	select CPU_SH4A
458	select CPU_SHX3
459	select CPU_HAS_PTEAEX
460	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
461	select USB_OHCI_SH if USB_OHCI_HCD
462	select USB_EHCI_SH if USB_EHCI_HCD
463	select PINCTRL
464
465config CPU_SUBTYPE_SHX3
466	bool "Support SH-X3 processor"
467	select CPU_SH4A
468	select CPU_SHX3
469	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
470	select GPIOLIB
471	select PINCTRL
472
473# SH4AL-DSP Processor Support
474
475config CPU_SUBTYPE_SH7343
476	bool "Support SH7343 processor"
477	select CPU_SH4AL_DSP
478	select ARCH_SHMOBILE
479	select SYS_SUPPORTS_SH_CMT
480
481config CPU_SUBTYPE_SH7722
482	bool "Support SH7722 processor"
483	select CPU_SH4AL_DSP
484	select CPU_SHX2
485	select ARCH_SHMOBILE
486	select ARCH_SPARSEMEM_ENABLE
487	select SYS_SUPPORTS_NUMA
488	select SYS_SUPPORTS_SH_CMT
489	select PINCTRL
490
491config CPU_SUBTYPE_SH7366
492	bool "Support SH7366 processor"
493	select CPU_SH4AL_DSP
494	select CPU_SHX2
495	select ARCH_SHMOBILE
496	select ARCH_SPARSEMEM_ENABLE
497	select SYS_SUPPORTS_NUMA
498	select SYS_SUPPORTS_SH_CMT
499
500endchoice
501
502source "arch/sh/mm/Kconfig"
503
504source "arch/sh/Kconfig.cpu"
505
506source "arch/sh/boards/Kconfig"
507
508menu "Timer and clock configuration"
509
510config SH_PCLK_FREQ
511	int "Peripheral clock frequency (in Hz)"
512	depends on SH_CLK_CPG_LEGACY
513	default "31250000" if CPU_SUBTYPE_SH7619
514	default "33333333" if CPU_SUBTYPE_SH7770 || \
515			      CPU_SUBTYPE_SH7760 || \
516			      CPU_SUBTYPE_SH7705 || \
517			      CPU_SUBTYPE_SH7203 || \
518			      CPU_SUBTYPE_SH7206 || \
519			      CPU_SUBTYPE_SH7263 || \
520			      CPU_SUBTYPE_MXG
521	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
522	default "66000000" if CPU_SUBTYPE_SH4_202
523	default "50000000"
524	help
525	  This option is used to specify the peripheral clock frequency.
526	  This is necessary for determining the reference clock value on
527	  platforms lacking an RTC.
528
529config SH_CLK_CPG
530	def_bool y
531
532config SH_CLK_CPG_LEGACY
533	depends on SH_CLK_CPG
534	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
535		      !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
536		      !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
537		      !CPU_SUBTYPE_SH7269
538
539endmenu
540
541menu "CPU Frequency scaling"
542source "drivers/cpufreq/Kconfig"
543endmenu
544
545source "arch/sh/drivers/Kconfig"
546
547endmenu
548
549menu "Kernel features"
550
551source "kernel/Kconfig.hz"
552
553config KEXEC
554	bool "kexec system call (EXPERIMENTAL)"
555	depends on MMU
556	select KEXEC_CORE
557	help
558	  kexec is a system call that implements the ability to shutdown your
559	  current kernel, and to start another kernel.  It is like a reboot
560	  but it is independent of the system firmware.  And like a reboot
561	  you can start any kernel with it, not just Linux.
562
563	  The name comes from the similarity to the exec system call.
564
565	  It is an ongoing process to be certain the hardware in a machine
566	  is properly shutdown, so do not be surprised if this code does not
567	  initially work for you.  As of this writing the exact hardware
568	  interface is strongly in flux, so no good recommendation can be
569	  made.
570
571config CRASH_DUMP
572	bool "kernel crash dumps (EXPERIMENTAL)"
573	depends on BROKEN_ON_SMP
574	help
575	  Generate crash dump after being started by kexec.
576	  This should be normally only set in special crash dump kernels
577	  which are loaded in the main kernel with kexec-tools into
578	  a specially reserved region and then later executed after
579	  a crash by kdump/kexec. The crash dump kernel must be compiled
580	  to a memory address not used by the main kernel using
581	  PHYSICAL_START.
582
583	  For more details see Documentation/admin-guide/kdump/kdump.rst
584
585config KEXEC_JUMP
586	bool "kexec jump (EXPERIMENTAL)"
587	depends on KEXEC && HIBERNATION
588	help
589	  Jump between original kernel and kexeced kernel and invoke
590	  code via KEXEC
591
592config PHYSICAL_START
593	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
594	default MEMORY_START
595	help
596	  This gives the physical address where the kernel is loaded
597	  and is ordinarily the same as MEMORY_START.
598
599	  Different values are primarily used in the case of kexec on panic
600	  where the fail safe kernel needs to run at a different address
601	  than the panic-ed kernel.
602
603config SMP
604	bool "Symmetric multi-processing support"
605	depends on SYS_SUPPORTS_SMP
606	help
607	  This enables support for systems with more than one CPU. If you have
608	  a system with only one CPU, say N. If you have a system with more
609	  than one CPU, say Y.
610
611	  If you say N here, the kernel will run on uni- and multiprocessor
612	  machines, but will use only one CPU of a multiprocessor machine. If
613	  you say Y here, the kernel will run on many, but not all,
614	  uniprocessor machines. On a uniprocessor machine, the kernel
615	  will run faster if you say N here.
616
617	  People using multiprocessor machines who say Y here should also say
618	  Y to "Enhanced Real Time Clock Support", below.
619
620	  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
621	  available at <https://www.tldp.org/docs.html#howto>.
622
623	  If you don't know what to do here, say N.
624
625config NR_CPUS
626	int "Maximum number of CPUs (2-32)"
627	range 2 32
628	depends on SMP
629	default "4" if CPU_SUBTYPE_SHX3
630	default "2"
631	help
632	  This allows you to specify the maximum number of CPUs which this
633	  kernel will support.  The maximum supported value is 32 and the
634	  minimum value which makes sense is 2.
635
636	  This is purely to save memory - each supported CPU adds
637	  approximately eight kilobytes to the kernel image.
638
639config HOTPLUG_CPU
640	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
641	depends on SMP
642	help
643	  Say Y here to experiment with turning CPUs off and on.  CPUs
644	  can be controlled through /sys/devices/system/cpu.
645
646config GUSA
647	def_bool y
648	depends on !SMP
649	help
650	  This enables support for gUSA (general UserSpace Atomicity).
651	  This is the default implementation for both UP and non-ll/sc
652	  CPUs, and is used by the libc, amongst others.
653
654	  For additional information, design information can be found
655	  in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
656
657	  This should only be disabled for special cases where alternate
658	  atomicity implementations exist.
659
660config GUSA_RB
661	bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
662	depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
663	help
664	  Enabling this option will allow the kernel to implement some
665	  atomic operations using a software implementation of load-locked/
666	  store-conditional (LLSC). On machines which do not have hardware
667	  LLSC, this should be more efficient than the other alternative of
668	  disabling interrupts around the atomic sequence.
669
670config HW_PERF_EVENTS
671	bool "Enable hardware performance counter support for perf events"
672	depends on PERF_EVENTS && CPU_HAS_PMU
673	default y
674	help
675	  Enable hardware performance counter support for perf events. If
676	  disabled, perf events will use software events only.
677
678source "drivers/sh/Kconfig"
679
680endmenu
681
682menu "Boot options"
683
684config USE_BUILTIN_DTB
685	bool "Use builtin DTB"
686	default n
687	depends on SH_DEVICE_TREE
688	help
689	  Link a device tree blob for particular hardware into the kernel,
690	  suppressing use of the DTB pointer provided by the bootloader.
691	  This option should only be used with legacy bootloaders that are
692	  not capable of providing a DTB to the kernel, or for experimental
693	  hardware without stable device tree bindings.
694
695config BUILTIN_DTB_SOURCE
696	string "Source file for builtin DTB"
697	default ""
698	depends on USE_BUILTIN_DTB
699	help
700	  Base name (without suffix, relative to arch/sh/boot/dts) for the
701	  a DTS file that will be used to produce the DTB linked into the
702	  kernel.
703
704config ZERO_PAGE_OFFSET
705	hex
706	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
707				SH_7751_SOLUTION_ENGINE
708	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
709	default "0x00002000" if PAGE_SIZE_8KB
710	default "0x00001000"
711	help
712	  This sets the default offset of zero page.
713
714config BOOT_LINK_OFFSET
715	hex
716	default "0x00210000" if SH_SHMIN
717	default "0x00810000" if SH_7780_SOLUTION_ENGINE
718	default "0x009e0000" if SH_TITAN
719	default "0x01800000" if SH_SDK7780
720	default "0x02000000" if SH_EDOSK7760
721	default "0x00800000"
722	help
723	  This option allows you to set the link address offset of the zImage.
724	  This can be useful if you are on a board which has a small amount of
725	  memory.
726
727config ENTRY_OFFSET
728	hex
729	default "0x00001000" if PAGE_SIZE_4KB
730	default "0x00002000" if PAGE_SIZE_8KB
731	default "0x00004000" if PAGE_SIZE_16KB
732	default "0x00010000" if PAGE_SIZE_64KB
733	default "0x00000000"
734
735config ROMIMAGE_MMCIF
736	bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
737	depends on CPU_SUBTYPE_SH7724
738	help
739	  Say Y here to include experimental MMCIF loading code in
740	  romImage. With this enabled it is possible to write the romImage
741	  kernel image to an MMC card and boot the kernel straight from
742	  the reset vector. At reset the processor Mask ROM will load the
743	  first part of the romImage which in turn loads the rest the kernel
744	  image to RAM using the MMCIF hardware block.
745
746choice
747	prompt "Kernel command line"
748	optional
749	default CMDLINE_OVERWRITE
750	help
751	  Setting this option allows the kernel command line arguments
752	  to be set.
753
754config CMDLINE_OVERWRITE
755	bool "Overwrite bootloader kernel arguments"
756	help
757	  Given string will overwrite any arguments passed in by
758	  a bootloader.
759
760config CMDLINE_EXTEND
761	bool "Extend bootloader kernel arguments"
762	help
763	  Given string will be concatenated with arguments passed in
764	  by a bootloader.
765
766endchoice
767
768config CMDLINE
769	string "Kernel command line arguments string"
770	depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
771	default "console=ttySC1,115200"
772
773endmenu
774
775menu "Bus options"
776
777config SUPERHYWAY
778	tristate "SuperHyway Bus support"
779	depends on CPU_SUBTYPE_SH4_202
780
781config MAPLE
782	bool "Maple Bus support"
783	depends on SH_DREAMCAST
784	help
785	 The Maple Bus is SEGA's serial communication bus for peripherals
786	 on the Dreamcast. Without this bus support you won't be able to
787	 get your Dreamcast keyboard etc to work, so most users
788	 probably want to say 'Y' here, unless you are only using the
789	 Dreamcast with a serial line terminal or a remote network
790	 connection.
791
792endmenu
793
794menu "Power management options (EXPERIMENTAL)"
795
796source "kernel/power/Kconfig"
797
798source "drivers/cpuidle/Kconfig"
799
800endmenu
801