xref: /linux/arch/sh/Kconfig (revision a4eb44a6435d6d8f9e642407a4a06f65eb90ca04)
1# SPDX-License-Identifier: GPL-2.0
2config SUPERH
3	def_bool y
4	select ARCH_32BIT_OFF_T
5	select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU
6	select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU
7	select ARCH_HAVE_CUSTOM_GPIO_H
8	select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
9	select ARCH_HAS_BINFMT_FLAT if !MMU
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 CPU_NO_EFFICIENT_FFS
18	select DMA_DECLARE_COHERENT
19	select GENERIC_ATOMIC64
20	select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
21	select GENERIC_IDLE_POLL_SETUP
22	select GENERIC_IRQ_SHOW
23	select GENERIC_PCI_IOMAP if PCI
24	select GENERIC_SCHED_CLOCK
25	select GENERIC_SMP_IDLE_THREAD
26	select GUP_GET_PTE_LOW_HIGH if X2TLB
27	select HAVE_ARCH_AUDITSYSCALL
28	select HAVE_ARCH_KGDB
29	select HAVE_ARCH_SECCOMP_FILTER
30	select HAVE_ARCH_TRACEHOOK
31	select HAVE_DEBUG_BUGVERBOSE
32	select HAVE_DEBUG_KMEMLEAK
33	select HAVE_DYNAMIC_FTRACE
34	select HAVE_FAST_GUP if MMU
35	select HAVE_FUNCTION_GRAPH_TRACER
36	select HAVE_FUNCTION_TRACER
37	select HAVE_FTRACE_MCOUNT_RECORD
38	select HAVE_HW_BREAKPOINT
39	select HAVE_IOREMAP_PROT if MMU && !X2TLB
40	select HAVE_KERNEL_BZIP2
41	select HAVE_KERNEL_GZIP
42	select HAVE_KERNEL_LZMA
43	select HAVE_KERNEL_LZO
44	select HAVE_KERNEL_XZ
45	select HAVE_KPROBES
46	select HAVE_KRETPROBES
47	select HAVE_MIXED_BREAKPOINTS_REGS
48	select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
49	select HAVE_NMI
50	select HAVE_PATA_PLATFORM
51	select HAVE_PERF_EVENTS
52	select HAVE_REGS_AND_STACK_ACCESS_API
53	select HAVE_UID16
54	select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
55	select HAVE_STACKPROTECTOR
56	select HAVE_SYSCALL_TRACEPOINTS
57	select IRQ_FORCED_THREADING
58	select MODULES_USE_ELF_RELA
59	select NEED_SG_DMA_LENGTH
60	select NO_DMA if !MMU && !DMA_COHERENT
61	select NO_GENERIC_PCI_IOPORT_MAP if PCI
62	select OLD_SIGACTION
63	select OLD_SIGSUSPEND
64	select PCI_DOMAINS if PCI
65	select PERF_EVENTS
66	select PERF_USE_VMALLOC
67	select RTC_LIB
68	select SET_FS
69	select SPARSE_IRQ
70	select TRACE_IRQFLAGS_SUPPORT
71	help
72	  The SuperH is a RISC processor targeted for use in embedded systems
73	  and consumer electronics; it was also used in the Sega Dreamcast
74	  gaming console.  The SuperH port has a home page at
75	  <http://www.linux-sh.org/>.
76
77config GENERIC_BUG
78	def_bool y
79	depends on BUG
80
81config GENERIC_HWEIGHT
82	def_bool y
83
84config GENERIC_CALIBRATE_DELAY
85	bool
86
87config GENERIC_LOCKBREAK
88	def_bool y
89	depends on SMP && PREEMPTION
90
91config ARCH_SUSPEND_POSSIBLE
92	def_bool n
93
94config ARCH_HIBERNATION_POSSIBLE
95	def_bool n
96
97config SYS_SUPPORTS_APM_EMULATION
98	bool
99	select ARCH_SUSPEND_POSSIBLE
100
101config SYS_SUPPORTS_SMP
102	bool
103
104config SYS_SUPPORTS_NUMA
105	bool
106
107config STACKTRACE_SUPPORT
108	def_bool y
109
110config LOCKDEP_SUPPORT
111	def_bool y
112
113config ARCH_HAS_ILOG2_U32
114	def_bool n
115
116config ARCH_HAS_ILOG2_U64
117	def_bool n
118
119config NO_IOPORT_MAP
120	def_bool !PCI
121	depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
122		   !SH_SOLUTION_ENGINE
123
124config IO_TRAPPED
125	bool
126
127config SWAP_IO_SPACE
128	bool
129
130config DMA_COHERENT
131	bool
132
133config DMA_NONCOHERENT
134	def_bool !NO_DMA && !DMA_COHERENT
135	select ARCH_HAS_DMA_PREP_COHERENT
136	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
137	select DMA_DIRECT_REMAP
138
139config PGTABLE_LEVELS
140	default 3 if X2TLB
141	default 2
142
143menu "System type"
144
145#
146# Processor families
147#
148config CPU_SH2
149	bool
150	select SH_INTC
151
152config CPU_SH2A
153	bool
154	select CPU_SH2
155	select UNCACHED_MAPPING
156
157config CPU_J2
158	bool
159	select CPU_SH2
160	select OF
161	select OF_EARLY_FLATTREE
162
163config CPU_SH3
164	bool
165	select CPU_HAS_INTEVT
166	select CPU_HAS_SR_RB
167	select SH_INTC
168	select SYS_SUPPORTS_SH_TMU
169
170config CPU_SH4
171	bool
172	select ARCH_SUPPORTS_HUGETLBFS if MMU
173	select CPU_HAS_INTEVT
174	select CPU_HAS_SR_RB
175	select CPU_HAS_FPU if !CPU_SH4AL_DSP
176	select SH_INTC
177	select SYS_SUPPORTS_SH_TMU
178
179config CPU_SH4A
180	bool
181	select CPU_SH4
182
183config CPU_SH4AL_DSP
184	bool
185	select CPU_SH4A
186	select CPU_HAS_DSP
187
188config CPU_SHX2
189	bool
190
191config CPU_SHX3
192	bool
193	select DMA_COHERENT
194	select SYS_SUPPORTS_SMP
195	select SYS_SUPPORTS_NUMA
196
197config ARCH_SHMOBILE
198	bool
199	select ARCH_SUSPEND_POSSIBLE
200	select PM
201
202config CPU_HAS_PMU
203       depends on CPU_SH4 || CPU_SH4A
204       default y
205       bool
206
207choice
208	prompt "Processor sub-type selection"
209
210#
211# Processor subtypes
212#
213
214# SH-2 Processor Support
215
216config CPU_SUBTYPE_SH7619
217	bool "Support SH7619 processor"
218	select CPU_SH2
219	select SYS_SUPPORTS_SH_CMT
220
221config CPU_SUBTYPE_J2
222	bool "Support J2 processor"
223	select CPU_J2
224	select SYS_SUPPORTS_SMP
225	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
226
227# SH-2A Processor Support
228
229config CPU_SUBTYPE_SH7201
230	bool "Support SH7201 processor"
231	select CPU_SH2A
232	select CPU_HAS_FPU
233	select SYS_SUPPORTS_SH_MTU2
234
235config CPU_SUBTYPE_SH7203
236	bool "Support SH7203 processor"
237	select CPU_SH2A
238	select CPU_HAS_FPU
239	select SYS_SUPPORTS_SH_CMT
240	select SYS_SUPPORTS_SH_MTU2
241	select PINCTRL
242
243config CPU_SUBTYPE_SH7206
244	bool "Support SH7206 processor"
245	select CPU_SH2A
246	select SYS_SUPPORTS_SH_CMT
247	select SYS_SUPPORTS_SH_MTU2
248
249config CPU_SUBTYPE_SH7263
250	bool "Support SH7263 processor"
251	select CPU_SH2A
252	select CPU_HAS_FPU
253	select SYS_SUPPORTS_SH_CMT
254	select SYS_SUPPORTS_SH_MTU2
255
256config CPU_SUBTYPE_SH7264
257	bool "Support SH7264 processor"
258	select CPU_SH2A
259	select CPU_HAS_FPU
260	select SYS_SUPPORTS_SH_CMT
261	select SYS_SUPPORTS_SH_MTU2
262	select PINCTRL
263
264config CPU_SUBTYPE_SH7269
265	bool "Support SH7269 processor"
266	select CPU_SH2A
267	select CPU_HAS_FPU
268	select SYS_SUPPORTS_SH_CMT
269	select SYS_SUPPORTS_SH_MTU2
270	select PINCTRL
271
272config CPU_SUBTYPE_MXG
273	bool "Support MX-G processor"
274	select CPU_SH2A
275	select SYS_SUPPORTS_SH_MTU2
276	help
277	  Select MX-G if running on an R8A03022BG part.
278
279# SH-3 Processor Support
280
281config CPU_SUBTYPE_SH7705
282	bool "Support SH7705 processor"
283	select CPU_SH3
284
285config CPU_SUBTYPE_SH7706
286	bool "Support SH7706 processor"
287	select CPU_SH3
288	help
289	  Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
290
291config CPU_SUBTYPE_SH7707
292	bool "Support SH7707 processor"
293	select CPU_SH3
294	help
295	  Select SH7707 if you have a  60 Mhz SH-3 HD6417707 CPU.
296
297config CPU_SUBTYPE_SH7708
298	bool "Support SH7708 processor"
299	select CPU_SH3
300	help
301	  Select SH7708 if you have a  60 Mhz SH-3 HD6417708S or
302	  if you have a 100 Mhz SH-3 HD6417708R CPU.
303
304config CPU_SUBTYPE_SH7709
305	bool "Support SH7709 processor"
306	select CPU_SH3
307	help
308	  Select SH7709 if you have a  80 Mhz SH-3 HD6417709 CPU.
309
310config CPU_SUBTYPE_SH7710
311	bool "Support SH7710 processor"
312	select CPU_SH3
313	select CPU_HAS_DSP
314	help
315	  Select SH7710 if you have a SH3-DSP SH7710 CPU.
316
317config CPU_SUBTYPE_SH7712
318	bool "Support SH7712 processor"
319	select CPU_SH3
320	select CPU_HAS_DSP
321	help
322	  Select SH7712 if you have a SH3-DSP SH7712 CPU.
323
324config CPU_SUBTYPE_SH7720
325	bool "Support SH7720 processor"
326	select CPU_SH3
327	select CPU_HAS_DSP
328	select SYS_SUPPORTS_SH_CMT
329	select USB_OHCI_SH if USB_OHCI_HCD
330	select PINCTRL
331	help
332	  Select SH7720 if you have a SH3-DSP SH7720 CPU.
333
334config CPU_SUBTYPE_SH7721
335	bool "Support SH7721 processor"
336	select CPU_SH3
337	select CPU_HAS_DSP
338	select SYS_SUPPORTS_SH_CMT
339	select USB_OHCI_SH if USB_OHCI_HCD
340	help
341	  Select SH7721 if you have a SH3-DSP SH7721 CPU.
342
343# SH-4 Processor Support
344
345config CPU_SUBTYPE_SH7750
346	bool "Support SH7750 processor"
347	select CPU_SH4
348	help
349	  Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
350
351config CPU_SUBTYPE_SH7091
352	bool "Support SH7091 processor"
353	select CPU_SH4
354	help
355	  Select SH7091 if you have an SH-4 based Sega device (such as
356	  the Dreamcast, Naomi, and Naomi 2).
357
358config CPU_SUBTYPE_SH7750R
359	bool "Support SH7750R processor"
360	select CPU_SH4
361
362config CPU_SUBTYPE_SH7750S
363	bool "Support SH7750S processor"
364	select CPU_SH4
365
366config CPU_SUBTYPE_SH7751
367	bool "Support SH7751 processor"
368	select CPU_SH4
369	help
370	  Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
371	  or if you have a HD6417751R CPU.
372
373config CPU_SUBTYPE_SH7751R
374	bool "Support SH7751R processor"
375	select CPU_SH4
376
377config CPU_SUBTYPE_SH7760
378	bool "Support SH7760 processor"
379	select CPU_SH4
380
381config CPU_SUBTYPE_SH4_202
382	bool "Support SH4-202 processor"
383	select CPU_SH4
384
385# SH-4A Processor Support
386
387config CPU_SUBTYPE_SH7723
388	bool "Support SH7723 processor"
389	select CPU_SH4A
390	select CPU_SHX2
391	select ARCH_SHMOBILE
392	select ARCH_SPARSEMEM_ENABLE
393	select SYS_SUPPORTS_SH_CMT
394	select PINCTRL
395	help
396	  Select SH7723 if you have an SH-MobileR2 CPU.
397
398config CPU_SUBTYPE_SH7724
399	bool "Support SH7724 processor"
400	select CPU_SH4A
401	select CPU_SHX2
402	select ARCH_SHMOBILE
403	select ARCH_SPARSEMEM_ENABLE
404	select SYS_SUPPORTS_SH_CMT
405	select PINCTRL
406	help
407	  Select SH7724 if you have an SH-MobileR2R CPU.
408
409config CPU_SUBTYPE_SH7734
410	bool "Support SH7734 processor"
411	select CPU_SH4A
412	select CPU_SHX2
413	select PINCTRL
414	help
415	  Select SH7734 if you have a SH4A SH7734 CPU.
416
417config CPU_SUBTYPE_SH7757
418	bool "Support SH7757 processor"
419	select CPU_SH4A
420	select CPU_SHX2
421	select PINCTRL
422	help
423	  Select SH7757 if you have a SH4A SH7757 CPU.
424
425config CPU_SUBTYPE_SH7763
426	bool "Support SH7763 processor"
427	select CPU_SH4A
428	select USB_OHCI_SH if USB_OHCI_HCD
429	help
430	  Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
431
432config CPU_SUBTYPE_SH7770
433	bool "Support SH7770 processor"
434	select CPU_SH4A
435
436config CPU_SUBTYPE_SH7780
437	bool "Support SH7780 processor"
438	select CPU_SH4A
439
440config CPU_SUBTYPE_SH7785
441	bool "Support SH7785 processor"
442	select CPU_SH4A
443	select CPU_SHX2
444	select ARCH_SPARSEMEM_ENABLE
445	select SYS_SUPPORTS_NUMA
446	select PINCTRL
447
448config CPU_SUBTYPE_SH7786
449	bool "Support SH7786 processor"
450	select CPU_SH4A
451	select CPU_SHX3
452	select CPU_HAS_PTEAEX
453	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
454	select USB_OHCI_SH if USB_OHCI_HCD
455	select USB_EHCI_SH if USB_EHCI_HCD
456	select PINCTRL
457
458config CPU_SUBTYPE_SHX3
459	bool "Support SH-X3 processor"
460	select CPU_SH4A
461	select CPU_SHX3
462	select GENERIC_CLOCKEVENTS_BROADCAST if SMP
463	select GPIOLIB
464	select PINCTRL
465
466# SH4AL-DSP Processor Support
467
468config CPU_SUBTYPE_SH7343
469	bool "Support SH7343 processor"
470	select CPU_SH4AL_DSP
471	select ARCH_SHMOBILE
472	select SYS_SUPPORTS_SH_CMT
473
474config CPU_SUBTYPE_SH7722
475	bool "Support SH7722 processor"
476	select CPU_SH4AL_DSP
477	select CPU_SHX2
478	select ARCH_SHMOBILE
479	select ARCH_SPARSEMEM_ENABLE
480	select SYS_SUPPORTS_NUMA
481	select SYS_SUPPORTS_SH_CMT
482	select PINCTRL
483
484config CPU_SUBTYPE_SH7366
485	bool "Support SH7366 processor"
486	select CPU_SH4AL_DSP
487	select CPU_SHX2
488	select ARCH_SHMOBILE
489	select ARCH_SPARSEMEM_ENABLE
490	select SYS_SUPPORTS_NUMA
491	select SYS_SUPPORTS_SH_CMT
492
493endchoice
494
495source "arch/sh/mm/Kconfig"
496
497source "arch/sh/Kconfig.cpu"
498
499source "arch/sh/boards/Kconfig"
500
501menu "Timer and clock configuration"
502
503config SH_PCLK_FREQ
504	int "Peripheral clock frequency (in Hz)"
505	depends on SH_CLK_CPG_LEGACY
506	default "31250000" if CPU_SUBTYPE_SH7619
507	default "33333333" if CPU_SUBTYPE_SH7770 || \
508			      CPU_SUBTYPE_SH7760 || \
509			      CPU_SUBTYPE_SH7705 || \
510			      CPU_SUBTYPE_SH7203 || \
511			      CPU_SUBTYPE_SH7206 || \
512			      CPU_SUBTYPE_SH7263 || \
513			      CPU_SUBTYPE_MXG
514	default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
515	default "66000000" if CPU_SUBTYPE_SH4_202
516	default "50000000"
517	help
518	  This option is used to specify the peripheral clock frequency.
519	  This is necessary for determining the reference clock value on
520	  platforms lacking an RTC.
521
522config SH_CLK_CPG
523	def_bool y
524
525config SH_CLK_CPG_LEGACY
526	depends on SH_CLK_CPG
527	def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
528		      !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
529		      !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
530		      !CPU_SUBTYPE_SH7269
531
532endmenu
533
534menu "CPU Frequency scaling"
535source "drivers/cpufreq/Kconfig"
536endmenu
537
538source "arch/sh/drivers/Kconfig"
539
540endmenu
541
542menu "Kernel features"
543
544source "kernel/Kconfig.hz"
545
546config KEXEC
547	bool "kexec system call (EXPERIMENTAL)"
548	depends on MMU
549	select KEXEC_CORE
550	help
551	  kexec is a system call that implements the ability to shutdown your
552	  current kernel, and to start another kernel.  It is like a reboot
553	  but it is independent of the system firmware.  And like a reboot
554	  you can start any kernel with it, not just Linux.
555
556	  The name comes from the similarity to the exec system call.
557
558	  It is an ongoing process to be certain the hardware in a machine
559	  is properly shutdown, so do not be surprised if this code does not
560	  initially work for you.  As of this writing the exact hardware
561	  interface is strongly in flux, so no good recommendation can be
562	  made.
563
564config CRASH_DUMP
565	bool "kernel crash dumps (EXPERIMENTAL)"
566	depends on BROKEN_ON_SMP
567	help
568	  Generate crash dump after being started by kexec.
569	  This should be normally only set in special crash dump kernels
570	  which are loaded in the main kernel with kexec-tools into
571	  a specially reserved region and then later executed after
572	  a crash by kdump/kexec. The crash dump kernel must be compiled
573	  to a memory address not used by the main kernel using
574	  PHYSICAL_START.
575
576	  For more details see Documentation/admin-guide/kdump/kdump.rst
577
578config KEXEC_JUMP
579	bool "kexec jump (EXPERIMENTAL)"
580	depends on KEXEC && HIBERNATION
581	help
582	  Jump between original kernel and kexeced kernel and invoke
583	  code via KEXEC
584
585config PHYSICAL_START
586	hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
587	default MEMORY_START
588	help
589	  This gives the physical address where the kernel is loaded
590	  and is ordinarily the same as MEMORY_START.
591
592	  Different values are primarily used in the case of kexec on panic
593	  where the fail safe kernel needs to run at a different address
594	  than the panic-ed kernel.
595
596config SMP
597	bool "Symmetric multi-processing support"
598	depends on SYS_SUPPORTS_SMP
599	help
600	  This enables support for systems with more than one CPU. If you have
601	  a system with only one CPU, say N. If you have a system with more
602	  than one CPU, say Y.
603
604	  If you say N here, the kernel will run on uni- and multiprocessor
605	  machines, but will use only one CPU of a multiprocessor machine. If
606	  you say Y here, the kernel will run on many, but not all,
607	  uniprocessor machines. On a uniprocessor machine, the kernel
608	  will run faster if you say N here.
609
610	  People using multiprocessor machines who say Y here should also say
611	  Y to "Enhanced Real Time Clock Support", below.
612
613	  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
614	  available at <https://www.tldp.org/docs.html#howto>.
615
616	  If you don't know what to do here, say N.
617
618config NR_CPUS
619	int "Maximum number of CPUs (2-32)"
620	range 2 32
621	depends on SMP
622	default "4" if CPU_SUBTYPE_SHX3
623	default "2"
624	help
625	  This allows you to specify the maximum number of CPUs which this
626	  kernel will support.  The maximum supported value is 32 and the
627	  minimum value which makes sense is 2.
628
629	  This is purely to save memory - each supported CPU adds
630	  approximately eight kilobytes to the kernel image.
631
632config HOTPLUG_CPU
633	bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
634	depends on SMP
635	help
636	  Say Y here to experiment with turning CPUs off and on.  CPUs
637	  can be controlled through /sys/devices/system/cpu.
638
639config GUSA
640	def_bool y
641	depends on !SMP
642	help
643	  This enables support for gUSA (general UserSpace Atomicity).
644	  This is the default implementation for both UP and non-ll/sc
645	  CPUs, and is used by the libc, amongst others.
646
647	  For additional information, design information can be found
648	  in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
649
650	  This should only be disabled for special cases where alternate
651	  atomicity implementations exist.
652
653config GUSA_RB
654	bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
655	depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
656	help
657	  Enabling this option will allow the kernel to implement some
658	  atomic operations using a software implementation of load-locked/
659	  store-conditional (LLSC). On machines which do not have hardware
660	  LLSC, this should be more efficient than the other alternative of
661	  disabling interrupts around the atomic sequence.
662
663config HW_PERF_EVENTS
664	bool "Enable hardware performance counter support for perf events"
665	depends on PERF_EVENTS && CPU_HAS_PMU
666	default y
667	help
668	  Enable hardware performance counter support for perf events. If
669	  disabled, perf events will use software events only.
670
671source "drivers/sh/Kconfig"
672
673endmenu
674
675menu "Boot options"
676
677config USE_BUILTIN_DTB
678	bool "Use builtin DTB"
679	default n
680	depends on SH_DEVICE_TREE
681	help
682	  Link a device tree blob for particular hardware into the kernel,
683	  suppressing use of the DTB pointer provided by the bootloader.
684	  This option should only be used with legacy bootloaders that are
685	  not capable of providing a DTB to the kernel, or for experimental
686	  hardware without stable device tree bindings.
687
688config BUILTIN_DTB_SOURCE
689	string "Source file for builtin DTB"
690	default ""
691	depends on USE_BUILTIN_DTB
692	help
693	  Base name (without suffix, relative to arch/sh/boot/dts) for the
694	  a DTS file that will be used to produce the DTB linked into the
695	  kernel.
696
697config ZERO_PAGE_OFFSET
698	hex
699	default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
700				SH_7751_SOLUTION_ENGINE
701	default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
702	default "0x00002000" if PAGE_SIZE_8KB
703	default "0x00001000"
704	help
705	  This sets the default offset of zero page.
706
707config BOOT_LINK_OFFSET
708	hex
709	default "0x00210000" if SH_SHMIN
710	default "0x00810000" if SH_7780_SOLUTION_ENGINE
711	default "0x009e0000" if SH_TITAN
712	default "0x01800000" if SH_SDK7780
713	default "0x02000000" if SH_EDOSK7760
714	default "0x00800000"
715	help
716	  This option allows you to set the link address offset of the zImage.
717	  This can be useful if you are on a board which has a small amount of
718	  memory.
719
720config ENTRY_OFFSET
721	hex
722	default "0x00001000" if PAGE_SIZE_4KB
723	default "0x00002000" if PAGE_SIZE_8KB
724	default "0x00004000" if PAGE_SIZE_16KB
725	default "0x00010000" if PAGE_SIZE_64KB
726	default "0x00000000"
727
728config ROMIMAGE_MMCIF
729	bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
730	depends on CPU_SUBTYPE_SH7724
731	help
732	  Say Y here to include experimental MMCIF loading code in
733	  romImage. With this enabled it is possible to write the romImage
734	  kernel image to an MMC card and boot the kernel straight from
735	  the reset vector. At reset the processor Mask ROM will load the
736	  first part of the romImage which in turn loads the rest the kernel
737	  image to RAM using the MMCIF hardware block.
738
739choice
740	prompt "Kernel command line"
741	optional
742	default CMDLINE_OVERWRITE
743	help
744	  Setting this option allows the kernel command line arguments
745	  to be set.
746
747config CMDLINE_OVERWRITE
748	bool "Overwrite bootloader kernel arguments"
749	help
750	  Given string will overwrite any arguments passed in by
751	  a bootloader.
752
753config CMDLINE_EXTEND
754	bool "Extend bootloader kernel arguments"
755	help
756	  Given string will be concatenated with arguments passed in
757	  by a bootloader.
758
759endchoice
760
761config CMDLINE
762	string "Kernel command line arguments string"
763	depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
764	default "console=ttySC1,115200"
765
766endmenu
767
768menu "Bus options"
769
770config SUPERHYWAY
771	tristate "SuperHyway Bus support"
772	depends on CPU_SUBTYPE_SH4_202
773
774config MAPLE
775	bool "Maple Bus support"
776	depends on SH_DREAMCAST
777	help
778	 The Maple Bus is SEGA's serial communication bus for peripherals
779	 on the Dreamcast. Without this bus support you won't be able to
780	 get your Dreamcast keyboard etc to work, so most users
781	 probably want to say 'Y' here, unless you are only using the
782	 Dreamcast with a serial line terminal or a remote network
783	 connection.
784
785endmenu
786
787menu "Power management options (EXPERIMENTAL)"
788
789source "kernel/power/Kconfig"
790
791source "drivers/cpuidle/Kconfig"
792
793endmenu
794