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