xref: /openbmc/linux/arch/sh/Kconfig (revision 84b102f5)
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_DEBUG_BUGVERBOSE
33	select HAVE_DEBUG_KMEMLEAK
34	select HAVE_DYNAMIC_FTRACE
35	select HAVE_FAST_GUP if MMU
36	select HAVE_FUNCTION_GRAPH_TRACER
37	select HAVE_FUNCTION_TRACER
38	select HAVE_FUTEX_CMPXCHG if FUTEX
39	select HAVE_FTRACE_MCOUNT_RECORD
40	select HAVE_HW_BREAKPOINT
41	select HAVE_IDE if HAS_IOPORT_MAP
42	select HAVE_IOREMAP_PROT if MMU && !X2TLB
43	select HAVE_KERNEL_BZIP2
44	select HAVE_KERNEL_GZIP
45	select HAVE_KERNEL_LZMA
46	select HAVE_KERNEL_LZO
47	select HAVE_KERNEL_XZ
48	select HAVE_KPROBES
49	select HAVE_KRETPROBES
50	select HAVE_MIXED_BREAKPOINTS_REGS
51	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
52	select HAVE_NMI
53	select HAVE_OPROFILE
54	select HAVE_PATA_PLATFORM
55	select HAVE_PERF_EVENTS
56	select HAVE_REGS_AND_STACK_ACCESS_API
57	select HAVE_UID16
58	select HAVE_STACKPROTECTOR
59	select HAVE_SYSCALL_TRACEPOINTS
60	select IRQ_FORCED_THREADING
61	select MAY_HAVE_SPARSE_IRQ
62	select MODULES_USE_ELF_RELA
63	select NEED_SG_DMA_LENGTH
64	select NO_DMA if !MMU && !DMA_COHERENT
65	select NO_GENERIC_PCI_IOPORT_MAP if PCI
66	select OLD_SIGACTION
67	select OLD_SIGSUSPEND
68	select PCI_DOMAINS if PCI
69	select PERF_EVENTS
70	select PERF_USE_VMALLOC
71	select RTC_LIB
72	select SET_FS
73	select SPARSE_IRQ
74	help
75	  The SuperH is a RISC processor targeted for use in embedded systems
76	  and consumer electronics; it was also used in the Sega Dreamcast
77	  gaming console.  The SuperH port has a home page at
78	  <http://www.linux-sh.org/>.
79
80config GENERIC_BUG
81	def_bool y
82	depends on BUG
83
84config GENERIC_HWEIGHT
85	def_bool y
86
87config GENERIC_CALIBRATE_DELAY
88	bool
89
90config GENERIC_LOCKBREAK
91	def_bool y
92	depends on SMP && PREEMPTION
93
94config ARCH_SUSPEND_POSSIBLE
95	def_bool n
96
97config ARCH_HIBERNATION_POSSIBLE
98	def_bool n
99
100config SYS_SUPPORTS_APM_EMULATION
101	bool
102	select ARCH_SUSPEND_POSSIBLE
103
104config SYS_SUPPORTS_HUGETLBFS
105	bool
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_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
128		   !SH_SOLUTION_ENGINE
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 CPU_HAS_INTEVT
179	select CPU_HAS_SR_RB
180	select CPU_HAS_FPU if !CPU_SH4AL_DSP
181	select SH_INTC
182	select SYS_SUPPORTS_SH_TMU
183	select SYS_SUPPORTS_HUGETLBFS if MMU
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
387config CPU_SUBTYPE_SH4_202
388	bool "Support SH4-202 processor"
389	select CPU_SH4
390
391# SH-4A Processor Support
392
393config CPU_SUBTYPE_SH7723
394	bool "Support SH7723 processor"
395	select CPU_SH4A
396	select CPU_SHX2
397	select ARCH_SHMOBILE
398	select ARCH_SPARSEMEM_ENABLE
399	select SYS_SUPPORTS_SH_CMT
400	select PINCTRL
401	help
402	  Select SH7723 if you have an SH-MobileR2 CPU.
403
404config CPU_SUBTYPE_SH7724
405	bool "Support SH7724 processor"
406	select CPU_SH4A
407	select CPU_SHX2
408	select ARCH_SHMOBILE
409	select ARCH_SPARSEMEM_ENABLE
410	select SYS_SUPPORTS_SH_CMT
411	select PINCTRL
412	help
413	  Select SH7724 if you have an SH-MobileR2R CPU.
414
415config CPU_SUBTYPE_SH7734
416	bool "Support SH7734 processor"
417	select CPU_SH4A
418	select CPU_SHX2
419	select PINCTRL
420	help
421	  Select SH7734 if you have a SH4A SH7734 CPU.
422
423config CPU_SUBTYPE_SH7757
424	bool "Support SH7757 processor"
425	select CPU_SH4A
426	select CPU_SHX2
427	select PINCTRL
428	help
429	  Select SH7757 if you have a SH4A SH7757 CPU.
430
431config CPU_SUBTYPE_SH7763
432	bool "Support SH7763 processor"
433	select CPU_SH4A
434	select USB_OHCI_SH if USB_OHCI_HCD
435	help
436	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
437
438config CPU_SUBTYPE_SH7770
439	bool "Support SH7770 processor"
440	select CPU_SH4A
441
442config CPU_SUBTYPE_SH7780
443	bool "Support SH7780 processor"
444	select CPU_SH4A
445
446config CPU_SUBTYPE_SH7785
447	bool "Support SH7785 processor"
448	select CPU_SH4A
449	select CPU_SHX2
450	select ARCH_SPARSEMEM_ENABLE
451	select SYS_SUPPORTS_NUMA
452	select PINCTRL
453
454config CPU_SUBTYPE_SH7786
455	bool "Support SH7786 processor"
456	select CPU_SH4A
457	select CPU_SHX3
458	select CPU_HAS_PTEAEX
459	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
460	select USB_OHCI_SH if USB_OHCI_HCD
461	select USB_EHCI_SH if USB_EHCI_HCD
462	select PINCTRL
463
464config CPU_SUBTYPE_SHX3
465	bool "Support SH-X3 processor"
466	select CPU_SH4A
467	select CPU_SHX3
468	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
469	select GPIOLIB
470	select PINCTRL
471
472# SH4AL-DSP Processor Support
473
474config CPU_SUBTYPE_SH7343
475	bool "Support SH7343 processor"
476	select CPU_SH4AL_DSP
477	select ARCH_SHMOBILE
478	select SYS_SUPPORTS_SH_CMT
479
480config CPU_SUBTYPE_SH7722
481	bool "Support SH7722 processor"
482	select CPU_SH4AL_DSP
483	select CPU_SHX2
484	select ARCH_SHMOBILE
485	select ARCH_SPARSEMEM_ENABLE
486	select SYS_SUPPORTS_NUMA
487	select SYS_SUPPORTS_SH_CMT
488	select PINCTRL
489
490config CPU_SUBTYPE_SH7366
491	bool "Support SH7366 processor"
492	select CPU_SH4AL_DSP
493	select CPU_SHX2
494	select ARCH_SHMOBILE
495	select ARCH_SPARSEMEM_ENABLE
496	select SYS_SUPPORTS_NUMA
497	select SYS_SUPPORTS_SH_CMT
498
499endchoice
500
501source "arch/sh/mm/Kconfig"
502
503source "arch/sh/Kconfig.cpu"
504
505source "arch/sh/boards/Kconfig"
506
507menu "Timer and clock configuration"
508
509config SH_PCLK_FREQ
510	int "Peripheral clock frequency (in Hz)"
511	depends on SH_CLK_CPG_LEGACY
512	default "31250000" if CPU_SUBTYPE_SH7619
513	default "33333333" if CPU_SUBTYPE_SH7770 || \
514			      CPU_SUBTYPE_SH7760 || \
515			      CPU_SUBTYPE_SH7705 || \
516			      CPU_SUBTYPE_SH7203 || \
517			      CPU_SUBTYPE_SH7206 || \
518			      CPU_SUBTYPE_SH7263 || \
519			      CPU_SUBTYPE_MXG
520	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
521	default "66000000" if CPU_SUBTYPE_SH4_202
522	default "50000000"
523	help
524	  This option is used to specify the peripheral clock frequency.
525	  This is necessary for determining the reference clock value on
526	  platforms lacking an RTC.
527
528config SH_CLK_CPG
529	def_bool y
530
531config SH_CLK_CPG_LEGACY
532	depends on SH_CLK_CPG
533	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
534		      !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
535		      !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
536		      !CPU_SUBTYPE_SH7269
537
538endmenu
539
540menu "CPU Frequency scaling"
541source "drivers/cpufreq/Kconfig"
542endmenu
543
544source "arch/sh/drivers/Kconfig"
545
546endmenu
547
548menu "Kernel features"
549
550source "kernel/Kconfig.hz"
551
552config KEXEC
553	bool "kexec system call (EXPERIMENTAL)"
554	depends on MMU
555	select KEXEC_CORE
556	help
557	  kexec is a system call that implements the ability to shutdown your
558	  current kernel, and to start another kernel.  It is like a reboot
559	  but it is independent of the system firmware.  And like a reboot
560	  you can start any kernel with it, not just Linux.
561
562	  The name comes from the similarity to the exec system call.
563
564	  It is an ongoing process to be certain the hardware in a machine
565	  is properly shutdown, so do not be surprised if this code does not
566	  initially work for you.  As of this writing the exact hardware
567	  interface is strongly in flux, so no good recommendation can be
568	  made.
569
570config CRASH_DUMP
571	bool "kernel crash dumps (EXPERIMENTAL)"
572	depends on BROKEN_ON_SMP
573	help
574	  Generate crash dump after being started by kexec.
575	  This should be normally only set in special crash dump kernels
576	  which are loaded in the main kernel with kexec-tools into
577	  a specially reserved region and then later executed after
578	  a crash by kdump/kexec. The crash dump kernel must be compiled
579	  to a memory address not used by the main kernel using
580	  PHYSICAL_START.
581
582	  For more details see Documentation/admin-guide/kdump/kdump.rst
583
584config KEXEC_JUMP
585	bool "kexec jump (EXPERIMENTAL)"
586	depends on KEXEC && HIBERNATION
587	help
588	  Jump between original kernel and kexeced kernel and invoke
589	  code via KEXEC
590
591config PHYSICAL_START
592	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
593	default MEMORY_START
594	help
595	  This gives the physical address where the kernel is loaded
596	  and is ordinarily the same as MEMORY_START.
597
598	  Different values are primarily used in the case of kexec on panic
599	  where the fail safe kernel needs to run at a different address
600	  than the panic-ed kernel.
601
602config SMP
603	bool "Symmetric multi-processing support"
604	depends on SYS_SUPPORTS_SMP
605	help
606	  This enables support for systems with more than one CPU. If you have
607	  a system with only one CPU, say N. If you have a system with more
608	  than one CPU, say Y.
609
610	  If you say N here, the kernel will run on uni- and multiprocessor
611	  machines, but will use only one CPU of a multiprocessor machine. If
612	  you say Y here, the kernel will run on many, but not all,
613	  uniprocessor machines. On a uniprocessor machine, the kernel
614	  will run faster if you say N here.
615
616	  People using multiprocessor machines who say Y here should also say
617	  Y to "Enhanced Real Time Clock Support", below.
618
619	  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
620	  available at <https://www.tldp.org/docs.html#howto>.
621
622	  If you don't know what to do here, say N.
623
624config NR_CPUS
625	int "Maximum number of CPUs (2-32)"
626	range 2 32
627	depends on SMP
628	default "4" if CPU_SUBTYPE_SHX3
629	default "2"
630	help
631	  This allows you to specify the maximum number of CPUs which this
632	  kernel will support.  The maximum supported value is 32 and the
633	  minimum value which makes sense is 2.
634
635	  This is purely to save memory - each supported CPU adds
636	  approximately eight kilobytes to the kernel image.
637
638config HOTPLUG_CPU
639	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
640	depends on SMP
641	help
642	  Say Y here to experiment with turning CPUs off and on.  CPUs
643	  can be controlled through /sys/devices/system/cpu.
644
645config GUSA
646	def_bool y
647	depends on !SMP
648	help
649	  This enables support for gUSA (general UserSpace Atomicity).
650	  This is the default implementation for both UP and non-ll/sc
651	  CPUs, and is used by the libc, amongst others.
652
653	  For additional information, design information can be found
654	  in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
655
656	  This should only be disabled for special cases where alternate
657	  atomicity implementations exist.
658
659config GUSA_RB
660	bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
661	depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
662	help
663	  Enabling this option will allow the kernel to implement some
664	  atomic operations using a software implementation of load-locked/
665	  store-conditional (LLSC). On machines which do not have hardware
666	  LLSC, this should be more efficient than the other alternative of
667	  disabling interrupts around the atomic sequence.
668
669config HW_PERF_EVENTS
670	bool "Enable hardware performance counter support for perf events"
671	depends on PERF_EVENTS && CPU_HAS_PMU
672	default y
673	help
674	  Enable hardware performance counter support for perf events. If
675	  disabled, perf events will use software events only.
676
677source "drivers/sh/Kconfig"
678
679endmenu
680
681menu "Boot options"
682
683config USE_BUILTIN_DTB
684	bool "Use builtin DTB"
685	default n
686	depends on SH_DEVICE_TREE
687	help
688	  Link a device tree blob for particular hardware into the kernel,
689	  suppressing use of the DTB pointer provided by the bootloader.
690	  This option should only be used with legacy bootloaders that are
691	  not capable of providing a DTB to the kernel, or for experimental
692	  hardware without stable device tree bindings.
693
694config BUILTIN_DTB_SOURCE
695	string "Source file for builtin DTB"
696	default ""
697	depends on USE_BUILTIN_DTB
698	help
699	  Base name (without suffix, relative to arch/sh/boot/dts) for the
700	  a DTS file that will be used to produce the DTB linked into the
701	  kernel.
702
703config ZERO_PAGE_OFFSET
704	hex
705	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
706				SH_7751_SOLUTION_ENGINE
707	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
708	default "0x00002000" if PAGE_SIZE_8KB
709	default "0x00001000"
710	help
711	  This sets the default offset of zero page.
712
713config BOOT_LINK_OFFSET
714	hex
715	default "0x00210000" if SH_SHMIN
716	default "0x00810000" if SH_7780_SOLUTION_ENGINE
717	default "0x009e0000" if SH_TITAN
718	default "0x01800000" if SH_SDK7780
719	default "0x02000000" if SH_EDOSK7760
720	default "0x00800000"
721	help
722	  This option allows you to set the link address offset of the zImage.
723	  This can be useful if you are on a board which has a small amount of
724	  memory.
725
726config ENTRY_OFFSET
727	hex
728	default "0x00001000" if PAGE_SIZE_4KB
729	default "0x00002000" if PAGE_SIZE_8KB
730	default "0x00004000" if PAGE_SIZE_16KB
731	default "0x00010000" if PAGE_SIZE_64KB
732	default "0x00000000"
733
734config ROMIMAGE_MMCIF
735	bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
736	depends on CPU_SUBTYPE_SH7724
737	help
738	  Say Y here to include experimental MMCIF loading code in
739	  romImage. With this enabled it is possible to write the romImage
740	  kernel image to an MMC card and boot the kernel straight from
741	  the reset vector. At reset the processor Mask ROM will load the
742	  first part of the romImage which in turn loads the rest the kernel
743	  image to RAM using the MMCIF hardware block.
744
745choice
746	prompt "Kernel command line"
747	optional
748	default CMDLINE_OVERWRITE
749	help
750	  Setting this option allows the kernel command line arguments
751	  to be set.
752
753config CMDLINE_OVERWRITE
754	bool "Overwrite bootloader kernel arguments"
755	help
756	  Given string will overwrite any arguments passed in by
757	  a bootloader.
758
759config CMDLINE_EXTEND
760	bool "Extend bootloader kernel arguments"
761	help
762	  Given string will be concatenated with arguments passed in
763	  by a bootloader.
764
765endchoice
766
767config CMDLINE
768	string "Kernel command line arguments string"
769	depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
770	default "console=ttySC1,115200"
771
772endmenu
773
774menu "Bus options"
775
776config SUPERHYWAY
777	tristate "SuperHyway Bus support"
778	depends on CPU_SUBTYPE_SH4_202
779
780config MAPLE
781	bool "Maple Bus support"
782	depends on SH_DREAMCAST
783	help
784	 The Maple Bus is SEGA's serial communication bus for peripherals
785	 on the Dreamcast. Without this bus support you won't be able to
786	 get your Dreamcast keyboard etc to work, so most users
787	 probably want to say 'Y' here, unless you are only using the
788	 Dreamcast with a serial line terminal or a remote network
789	 connection.
790
791endmenu
792
793menu "Power management options (EXPERIMENTAL)"
794
795source "kernel/power/Kconfig"
796
797source "drivers/cpuidle/Kconfig"
798
799endmenu
800