Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2config SUPERH
3 def_bool y
4 select ARCH_32BIT_OFF_T
5 select ARCH_HAS_CPU_CACHE_ALIASING
6 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
7 select ARCH_HAS_BINFMT_FLAT if !MMU
8 select ARCH_HAS_CPU_FINALIZE_INIT
9 select ARCH_HAS_CURRENT_STACK_POINTER
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 ARCH_NEED_CMPXCHG_1_EMU
18 select CPU_NO_EFFICIENT_FFS
19 select DMA_DECLARE_COHERENT
20 select GENERIC_ATOMIC64
21 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
22 select GENERIC_IDLE_POLL_SETUP
23 select GENERIC_IRQ_SHOW
24 select GENERIC_LIB_ASHLDI3
25 select GENERIC_LIB_ASHRDI3
26 select GENERIC_LIB_LSHRDI3
27 select GENERIC_PCI_IOMAP if PCI
28 select GENERIC_SCHED_CLOCK
29 select GENERIC_SMP_IDLE_THREAD
30 select GUP_GET_PXX_LOW_HIGH if X2TLB
31 select HAS_IOPORT if HAS_IOPORT_MAP
32 select GENERIC_IOREMAP if MMU
33 select HAVE_ARCH_AUDITSYSCALL
34 select HAVE_ARCH_KGDB
35 select HAVE_ARCH_SECCOMP_FILTER
36 select HAVE_ARCH_TRACEHOOK
37 select HAVE_DEBUG_BUGVERBOSE
38 select HAVE_DEBUG_KMEMLEAK
39 select HAVE_DYNAMIC_FTRACE
40 select HAVE_GUP_FAST if MMU
41 select HAVE_FUNCTION_GRAPH_TRACER
42 select HAVE_FUNCTION_TRACER
43 select HAVE_HW_BREAKPOINT
44 select HAVE_IOREMAP_PROT if MMU && !X2TLB
45 select HAVE_KERNEL_BZIP2
46 select HAVE_KERNEL_GZIP
47 select HAVE_KERNEL_LZMA
48 select HAVE_KERNEL_LZO
49 select HAVE_KERNEL_XZ
50 select HAVE_KPROBES
51 select HAVE_KRETPROBES
52 select HAVE_MIXED_BREAKPOINTS_REGS
53 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
54 select HAVE_NMI
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_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
60 select HAVE_STACKPROTECTOR
61 select HAVE_SYSCALL_TRACEPOINTS
62 select IRQ_FORCED_THREADING
63 select LOCK_MM_AND_FIND_VMA
64 select MODULES_USE_ELF_RELA
65 select NEED_SG_DMA_LENGTH
66 select NO_DMA if !MMU && !DMA_COHERENT
67 select NO_GENERIC_PCI_IOPORT_MAP if PCI
68 select OLD_SIGACTION
69 select OLD_SIGSUSPEND
70 select PCI_DOMAINS if PCI
71 select PERF_EVENTS
72 select PERF_USE_VMALLOC
73 select RTC_LIB
74 select SPARSE_IRQ
75 select TRACE_IRQFLAGS_SUPPORT
76 help
77 The SuperH is a RISC processor targeted for use in embedded systems
78 and consumer electronics; it was also used in the Sega Dreamcast
79 gaming console. The SuperH port has a home page at
80 <http://www.linux-sh.org/>.
81
82config GENERIC_BUG
83 def_bool y
84 depends on BUG
85
86config GENERIC_HWEIGHT
87 def_bool y
88
89config GENERIC_CALIBRATE_DELAY
90 bool
91
92config GENERIC_LOCKBREAK
93 def_bool y
94 depends on SMP && PREEMPTION
95
96config ARCH_SUSPEND_POSSIBLE
97 def_bool n
98
99config ARCH_HIBERNATION_POSSIBLE
100 def_bool n
101
102config SYS_SUPPORTS_APM_EMULATION
103 bool
104 select ARCH_SUSPEND_POSSIBLE
105
106config SYS_SUPPORTS_SMP
107 bool
108
109config SYS_SUPPORTS_NUMA
110 bool
111
112config STACKTRACE_SUPPORT
113 def_bool y
114
115config LOCKDEP_SUPPORT
116 def_bool y
117
118config ARCH_HAS_ILOG2_U32
119 def_bool n
120
121config ARCH_HAS_ILOG2_U64
122 def_bool n
123
124config NO_IOPORT_MAP
125 def_bool !PCI
126 depends on !SH_SHMIN && !SH_HP6XX && !SH_SOLUTION_ENGINE && \
127 !SH_DREAMCAST
128
129config IO_TRAPPED
130 bool
131
132config SWAP_IO_SPACE
133 bool
134
135config DMA_COHERENT
136 bool
137
138config DMA_NONCOHERENT
139 def_bool !NO_DMA && !DMA_COHERENT
140 select ARCH_HAS_DMA_PREP_COHERENT
141 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
142 select DMA_DIRECT_REMAP
143
144config PGTABLE_LEVELS
145 default 3 if X2TLB
146 default 2
147
148menu "System type"
149
150#
151# Processor families
152#
153config CPU_SH2
154 bool
155 select SH_INTC
156
157config CPU_SH2A
158 bool
159 select CPU_SH2
160 select UNCACHED_MAPPING
161
162config CPU_J2
163 bool
164 select CPU_SH2
165 select OF
166 select OF_EARLY_FLATTREE
167
168config CPU_SH3
169 bool
170 select CPU_HAS_INTEVT
171 select CPU_HAS_SR_RB
172 select SH_INTC
173 select SYS_SUPPORTS_SH_TMU
174
175config CPU_SH4
176 bool
177 select ARCH_SUPPORTS_HUGETLBFS if MMU
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
184config CPU_SH4A
185 bool
186 select CPU_SH4
187
188config CPU_SH4AL_DSP
189 bool
190 select CPU_SH4A
191 select CPU_HAS_DSP
192
193config CPU_SHX2
194 bool
195
196config CPU_SHX3
197 bool
198 select DMA_COHERENT
199 select SYS_SUPPORTS_SMP
200 select SYS_SUPPORTS_NUMA
201
202config ARCH_SHMOBILE
203 bool
204 select ARCH_SUSPEND_POSSIBLE
205 select PM
206
207config CPU_HAS_PMU
208 depends on CPU_SH4 || CPU_SH4A
209 default y
210 bool
211
212choice
213 prompt "Processor sub-type selection"
214
215#
216# Processor subtypes
217#
218
219# SH-2 Processor Support
220
221config CPU_SUBTYPE_SH7619
222 bool "Support SH7619 processor"
223 select CPU_SH2
224 select SYS_SUPPORTS_SH_CMT
225
226config CPU_SUBTYPE_J2
227 bool "Support J2 processor"
228 select CPU_J2
229 select SYS_SUPPORTS_SMP
230 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
231
232# SH-2A Processor Support
233
234config CPU_SUBTYPE_SH7201
235 bool "Support SH7201 processor"
236 select CPU_SH2A
237 select CPU_HAS_FPU
238 select SYS_SUPPORTS_SH_MTU2
239
240config CPU_SUBTYPE_SH7203
241 bool "Support SH7203 processor"
242 select CPU_SH2A
243 select CPU_HAS_FPU
244 select SYS_SUPPORTS_SH_CMT
245 select SYS_SUPPORTS_SH_MTU2
246 select PINCTRL
247
248config CPU_SUBTYPE_SH7206
249 bool "Support SH7206 processor"
250 select CPU_SH2A
251 select SYS_SUPPORTS_SH_CMT
252 select SYS_SUPPORTS_SH_MTU2
253
254config CPU_SUBTYPE_SH7263
255 bool "Support SH7263 processor"
256 select CPU_SH2A
257 select CPU_HAS_FPU
258 select SYS_SUPPORTS_SH_CMT
259 select SYS_SUPPORTS_SH_MTU2
260
261config CPU_SUBTYPE_SH7264
262 bool "Support SH7264 processor"
263 select CPU_SH2A
264 select CPU_HAS_FPU
265 select SYS_SUPPORTS_SH_CMT
266 select SYS_SUPPORTS_SH_MTU2
267 select PINCTRL
268
269config CPU_SUBTYPE_SH7269
270 bool "Support SH7269 processor"
271 select CPU_SH2A
272 select CPU_HAS_FPU
273 select SYS_SUPPORTS_SH_CMT
274 select SYS_SUPPORTS_SH_MTU2
275 select PINCTRL
276
277config CPU_SUBTYPE_MXG
278 bool "Support MX-G processor"
279 select CPU_SH2A
280 select SYS_SUPPORTS_SH_MTU2
281 help
282 Select MX-G if running on an R8A03022BG part.
283
284# SH-3 Processor Support
285
286config CPU_SUBTYPE_SH7705
287 bool "Support SH7705 processor"
288 select CPU_SH3
289
290config CPU_SUBTYPE_SH7706
291 bool "Support SH7706 processor"
292 select CPU_SH3
293 help
294 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
295
296config CPU_SUBTYPE_SH7707
297 bool "Support SH7707 processor"
298 select CPU_SH3
299 help
300 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
301
302config CPU_SUBTYPE_SH7708
303 bool "Support SH7708 processor"
304 select CPU_SH3
305 help
306 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
307 if you have a 100 Mhz SH-3 HD6417708R CPU.
308
309config CPU_SUBTYPE_SH7709
310 bool "Support SH7709 processor"
311 select CPU_SH3
312 help
313 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
314
315config CPU_SUBTYPE_SH7710
316 bool "Support SH7710 processor"
317 select CPU_SH3
318 select CPU_HAS_DSP
319 help
320 Select SH7710 if you have a SH3-DSP SH7710 CPU.
321
322config CPU_SUBTYPE_SH7712
323 bool "Support SH7712 processor"
324 select CPU_SH3
325 select CPU_HAS_DSP
326 help
327 Select SH7712 if you have a SH3-DSP SH7712 CPU.
328
329config CPU_SUBTYPE_SH7720
330 bool "Support SH7720 processor"
331 select CPU_SH3
332 select CPU_HAS_DSP
333 select SYS_SUPPORTS_SH_CMT
334 select USB_OHCI_SH if USB_OHCI_HCD
335 select PINCTRL
336 help
337 Select SH7720 if you have a SH3-DSP SH7720 CPU.
338
339config CPU_SUBTYPE_SH7721
340 bool "Support SH7721 processor"
341 select CPU_SH3
342 select CPU_HAS_DSP
343 select SYS_SUPPORTS_SH_CMT
344 select USB_OHCI_SH if USB_OHCI_HCD
345 help
346 Select SH7721 if you have a SH3-DSP SH7721 CPU.
347
348# SH-4 Processor Support
349
350config CPU_SUBTYPE_SH7750
351 bool "Support SH7750 processor"
352 select CPU_SH4
353 help
354 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
355
356config CPU_SUBTYPE_SH7091
357 bool "Support SH7091 processor"
358 select CPU_SH4
359 help
360 Select SH7091 if you have an SH-4 based Sega device (such as
361 the Dreamcast, Naomi, and Naomi 2).
362
363config CPU_SUBTYPE_SH7750R
364 bool "Support SH7750R processor"
365 select CPU_SH4
366
367config CPU_SUBTYPE_SH7750S
368 bool "Support SH7750S processor"
369 select CPU_SH4
370
371config CPU_SUBTYPE_SH7751
372 bool "Support SH7751 processor"
373 select CPU_SH4
374 help
375 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
376 or if you have a HD6417751R CPU.
377
378config CPU_SUBTYPE_SH7751R
379 bool "Support SH7751R processor"
380 select CPU_SH4
381
382config CPU_SUBTYPE_SH7760
383 bool "Support SH7760 processor"
384 select CPU_SH4
385
386# SH-4A Processor Support
387
388config CPU_SUBTYPE_SH7723
389 bool "Support SH7723 processor"
390 select CPU_SH4A
391 select CPU_SHX2
392 select ARCH_SHMOBILE
393 select ARCH_SPARSEMEM_ENABLE
394 select SYS_SUPPORTS_SH_CMT
395 select PINCTRL
396 help
397 Select SH7723 if you have an SH-MobileR2 CPU.
398
399config CPU_SUBTYPE_SH7724
400 bool "Support SH7724 processor"
401 select CPU_SH4A
402 select CPU_SHX2
403 select ARCH_SHMOBILE
404 select ARCH_SPARSEMEM_ENABLE
405 select SYS_SUPPORTS_SH_CMT
406 select PINCTRL
407 help
408 Select SH7724 if you have an SH-MobileR2R CPU.
409
410config CPU_SUBTYPE_SH7734
411 bool "Support SH7734 processor"
412 select CPU_SH4A
413 select CPU_SHX2
414 select PINCTRL
415 help
416 Select SH7734 if you have a SH4A SH7734 CPU.
417
418config CPU_SUBTYPE_SH7757
419 bool "Support SH7757 processor"
420 select CPU_SH4A
421 select CPU_SHX2
422 select PINCTRL
423 help
424 Select SH7757 if you have a SH4A SH7757 CPU.
425
426config CPU_SUBTYPE_SH7763
427 bool "Support SH7763 processor"
428 select CPU_SH4A
429 select USB_OHCI_SH if USB_OHCI_HCD
430 help
431 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
432
433config CPU_SUBTYPE_SH7770
434 bool "Support SH7770 processor"
435 select CPU_SH4A
436
437config CPU_SUBTYPE_SH7780
438 bool "Support SH7780 processor"
439 select CPU_SH4A
440
441config CPU_SUBTYPE_SH7785
442 bool "Support SH7785 processor"
443 select CPU_SH4A
444 select CPU_SHX2
445 select ARCH_SPARSEMEM_ENABLE
446 select SYS_SUPPORTS_NUMA
447 select PINCTRL
448
449config CPU_SUBTYPE_SH7786
450 bool "Support SH7786 processor"
451 select CPU_SH4A
452 select CPU_SHX3
453 select CPU_HAS_PTEAEX
454 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
455 select USB_OHCI_SH if USB_OHCI_HCD
456 select USB_EHCI_SH if USB_EHCI_HCD
457 select PINCTRL
458
459config CPU_SUBTYPE_SHX3
460 bool "Support SH-X3 processor"
461 select CPU_SH4A
462 select CPU_SHX3
463 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
464 select GPIOLIB
465 select PINCTRL
466
467# SH4AL-DSP Processor Support
468
469config CPU_SUBTYPE_SH7343
470 bool "Support SH7343 processor"
471 select CPU_SH4AL_DSP
472 select ARCH_SHMOBILE
473 select SYS_SUPPORTS_SH_CMT
474
475config CPU_SUBTYPE_SH7722
476 bool "Support SH7722 processor"
477 select CPU_SH4AL_DSP
478 select CPU_SHX2
479 select ARCH_SHMOBILE
480 select ARCH_SPARSEMEM_ENABLE
481 select SYS_SUPPORTS_NUMA
482 select SYS_SUPPORTS_SH_CMT
483 select PINCTRL
484
485config CPU_SUBTYPE_SH7366
486 bool "Support SH7366 processor"
487 select CPU_SH4AL_DSP
488 select CPU_SHX2
489 select ARCH_SHMOBILE
490 select ARCH_SPARSEMEM_ENABLE
491 select SYS_SUPPORTS_NUMA
492 select SYS_SUPPORTS_SH_CMT
493
494endchoice
495
496source "arch/sh/mm/Kconfig"
497
498source "arch/sh/Kconfig.cpu"
499
500source "arch/sh/boards/Kconfig"
501
502menu "Timer and clock configuration"
503
504config SH_PCLK_FREQ
505 int "Peripheral clock frequency (in Hz)"
506 depends on SH_CLK_CPG_LEGACY
507 default "31250000" if CPU_SUBTYPE_SH7619
508 default "33333333" if CPU_SUBTYPE_SH7770 || \
509 CPU_SUBTYPE_SH7760 || \
510 CPU_SUBTYPE_SH7705 || \
511 CPU_SUBTYPE_SH7203 || \
512 CPU_SUBTYPE_SH7206 || \
513 CPU_SUBTYPE_SH7263 || \
514 CPU_SUBTYPE_MXG
515 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
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 ARCH_SUPPORTS_KEXEC
547 def_bool MMU
548
549config ARCH_SUPPORTS_CRASH_DUMP
550 def_bool BROKEN_ON_SMP
551
552config ARCH_DEFAULT_CRASH_DUMP
553 def_bool y
554
555config ARCH_SUPPORTS_KEXEC_JUMP
556 def_bool y
557
558config PHYSICAL_START
559 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
560 default MEMORY_START
561 help
562 This gives the physical address where the kernel is loaded
563 and is ordinarily the same as MEMORY_START.
564
565 Different values are primarily used in the case of kexec on panic
566 where the fail safe kernel needs to run at a different address
567 than the panic-ed kernel.
568
569config SMP
570 bool "Symmetric multi-processing support"
571 depends on SYS_SUPPORTS_SMP
572 help
573 This enables support for systems with more than one CPU. If you have
574 a system with only one CPU, say N. If you have a system with more
575 than one CPU, say Y.
576
577 If you say N here, the kernel will run on uni- and multiprocessor
578 machines, but will use only one CPU of a multiprocessor machine. If
579 you say Y here, the kernel will run on many, but not all,
580 uniprocessor machines. On a uniprocessor machine, the kernel
581 will run faster if you say N here.
582
583 People using multiprocessor machines who say Y here should also say
584 Y to "Enhanced Real Time Clock Support", below.
585
586 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
587 available at <https://www.tldp.org/docs.html#howto>.
588
589 If you don't know what to do here, say N.
590
591config NR_CPUS
592 int "Maximum number of CPUs (2-32)"
593 range 2 32
594 depends on SMP
595 default "4" if CPU_SUBTYPE_SHX3
596 default "2"
597 help
598 This allows you to specify the maximum number of CPUs which this
599 kernel will support. The maximum supported value is 32 and the
600 minimum value which makes sense is 2.
601
602 This is purely to save memory - each supported CPU adds
603 approximately eight kilobytes to the kernel image.
604
605config HOTPLUG_CPU
606 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
607 depends on SMP
608 help
609 Say Y here to experiment with turning CPUs off and on. CPUs
610 can be controlled through /sys/devices/system/cpu.
611
612config GUSA
613 def_bool y
614 depends on !SMP
615 help
616 This enables support for gUSA (general UserSpace Atomicity).
617 This is the default implementation for both UP and non-ll/sc
618 CPUs, and is used by the libc, amongst others.
619
620 For additional information, design information can be found
621 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
622
623 This should only be disabled for special cases where alternate
624 atomicity implementations exist.
625
626config GUSA_RB
627 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
628 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
629 help
630 Enabling this option will allow the kernel to implement some
631 atomic operations using a software implementation of load-locked/
632 store-conditional (LLSC). On machines which do not have hardware
633 LLSC, this should be more efficient than the other alternative of
634 disabling interrupts around the atomic sequence.
635
636config HW_PERF_EVENTS
637 bool "Enable hardware performance counter support for perf events"
638 depends on PERF_EVENTS && CPU_HAS_PMU
639 default y
640 help
641 Enable hardware performance counter support for perf events. If
642 disabled, perf events will use software events only.
643
644source "drivers/sh/Kconfig"
645
646endmenu
647
648menu "Boot options"
649
650config BUILTIN_DTB
651 bool "Use builtin DTB"
652 default n
653 depends on SH_DEVICE_TREE
654 select GENERIC_BUILTIN_DTB
655 help
656 Link a device tree blob for particular hardware into the kernel,
657 suppressing use of the DTB pointer provided by the bootloader.
658 This option should only be used with legacy bootloaders that are
659 not capable of providing a DTB to the kernel, or for experimental
660 hardware without stable device tree bindings.
661
662config BUILTIN_DTB_NAME
663 string "Source file for builtin DTB"
664 default ""
665 depends on BUILTIN_DTB
666 help
667 Base name (without suffix, relative to arch/sh/boot/dts) for the
668 a DTS file that will be used to produce the DTB linked into the
669 kernel.
670
671config ZERO_PAGE_OFFSET
672 hex
673 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
674 SH_7751_SOLUTION_ENGINE
675 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
676 default "0x00002000" if PAGE_SIZE_8KB
677 default "0x00001000"
678 help
679 This sets the default offset of zero page.
680
681config BOOT_LINK_OFFSET
682 hex
683 default "0x00210000" if SH_SHMIN
684 default "0x00810000" if SH_7780_SOLUTION_ENGINE
685 default "0x009e0000" if SH_TITAN
686 default "0x01800000" if SH_SDK7780
687 default "0x02000000" if SH_EDOSK7760
688 default "0x00800000"
689 help
690 This option allows you to set the link address offset of the zImage.
691 This can be useful if you are on a board which has a small amount of
692 memory.
693
694config ENTRY_OFFSET
695 hex
696 default "0x00001000" if PAGE_SIZE_4KB
697 default "0x00002000" if PAGE_SIZE_8KB
698 default "0x00004000" if PAGE_SIZE_16KB
699 default "0x00010000" if PAGE_SIZE_64KB
700 default "0x00000000"
701
702config ROMIMAGE_MMCIF
703 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
704 depends on CPU_SUBTYPE_SH7724
705 help
706 Say Y here to include experimental MMCIF loading code in
707 romImage. With this enabled it is possible to write the romImage
708 kernel image to an MMC card and boot the kernel straight from
709 the reset vector. At reset the processor Mask ROM will load the
710 first part of the romImage which in turn loads the rest the kernel
711 image to RAM using the MMCIF hardware block.
712
713choice
714 prompt "Kernel command line"
715 default CMDLINE_OVERWRITE
716 help
717 Setting this option allows the kernel command line arguments
718 to be set.
719
720config CMDLINE_OVERWRITE
721 bool "Overwrite bootloader kernel arguments"
722 help
723 Given string will overwrite any arguments passed in by
724 a bootloader.
725
726config CMDLINE_EXTEND
727 bool "Extend bootloader kernel arguments"
728 help
729 Given string will be concatenated with arguments passed in
730 by a bootloader.
731
732config CMDLINE_FROM_BOOTLOADER
733 bool "Use bootloader kernel arguments"
734 help
735 Uses the command-line options passed by the boot loader.
736
737endchoice
738
739config CMDLINE
740 string "Kernel command line arguments string"
741 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
742 default "console=ttySC1,115200"
743
744endmenu
745
746menu "Bus options"
747
748config MAPLE
749 bool "Maple Bus support"
750 depends on SH_DREAMCAST
751 help
752 The Maple Bus is SEGA's serial communication bus for peripherals
753 on the Dreamcast. Without this bus support you won't be able to
754 get your Dreamcast keyboard etc to work, so most users
755 probably want to say 'Y' here, unless you are only using the
756 Dreamcast with a serial line terminal or a remote network
757 connection.
758
759endmenu
760
761menu "Power management options (EXPERIMENTAL)"
762
763source "kernel/power/Kconfig"
764
765source "drivers/cpuidle/Kconfig"
766
767endmenu