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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 USE_BUILTIN_DTB
652 bool "Use builtin DTB"
653 default n
654 depends on SH_DEVICE_TREE
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_SOURCE
663 string "Source file for builtin DTB"
664 default ""
665 depends on USE_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
1config SUPERH
2 def_bool y
3 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select HAVE_PATA_PLATFORM
6 select CLKDEV_LOOKUP
7 select HAVE_IDE if HAS_IOPORT_MAP
8 select HAVE_MEMBLOCK
9 select HAVE_MEMBLOCK_NODE_MAP
10 select ARCH_DISCARD_MEMBLOCK
11 select HAVE_OPROFILE
12 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_ARCH_TRACEHOOK
14 select HAVE_DMA_API_DEBUG
15 select HAVE_PERF_EVENTS
16 select HAVE_DEBUG_BUGVERBOSE
17 select ARCH_HAVE_CUSTOM_GPIO_H
18 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
19 select ARCH_HAS_GCOV_PROFILE_ALL
20 select PERF_USE_VMALLOC
21 select HAVE_DEBUG_KMEMLEAK
22 select HAVE_KERNEL_GZIP
23 select CPU_NO_EFFICIENT_FFS
24 select HAVE_KERNEL_BZIP2
25 select HAVE_KERNEL_LZMA
26 select HAVE_KERNEL_XZ
27 select HAVE_KERNEL_LZO
28 select HAVE_UID16
29 select ARCH_WANT_IPC_PARSE_VERSION
30 select HAVE_SYSCALL_TRACEPOINTS
31 select HAVE_REGS_AND_STACK_ACCESS_API
32 select MAY_HAVE_SPARSE_IRQ
33 select IRQ_FORCED_THREADING
34 select RTC_LIB
35 select GENERIC_ATOMIC64
36 select GENERIC_IRQ_SHOW
37 select GENERIC_SMP_IDLE_THREAD
38 select GENERIC_IDLE_POLL_SETUP
39 select GENERIC_CLOCKEVENTS
40 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
41 select GENERIC_SCHED_CLOCK
42 select GENERIC_STRNCPY_FROM_USER
43 select GENERIC_STRNLEN_USER
44 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
45 select MODULES_USE_ELF_RELA
46 select OLD_SIGSUSPEND
47 select OLD_SIGACTION
48 select HAVE_ARCH_AUDITSYSCALL
49 select HAVE_FUTEX_CMPXCHG if FUTEX
50 select HAVE_NMI
51 help
52 The SuperH is a RISC processor targeted for use in embedded systems
53 and consumer electronics; it was also used in the Sega Dreamcast
54 gaming console. The SuperH port has a home page at
55 <http://www.linux-sh.org/>.
56
57config SUPERH32
58 def_bool ARCH = "sh"
59 select HAVE_KPROBES
60 select HAVE_KRETPROBES
61 select HAVE_IOREMAP_PROT if MMU && !X2TLB
62 select HAVE_FUNCTION_TRACER
63 select HAVE_FTRACE_MCOUNT_RECORD
64 select HAVE_DYNAMIC_FTRACE
65 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
66 select ARCH_WANT_IPC_PARSE_VERSION
67 select HAVE_FUNCTION_GRAPH_TRACER
68 select HAVE_ARCH_KGDB
69 select HAVE_HW_BREAKPOINT
70 select HAVE_MIXED_BREAKPOINTS_REGS
71 select PERF_EVENTS
72 select ARCH_HIBERNATION_POSSIBLE if MMU
73 select SPARSE_IRQ
74 select HAVE_CC_STACKPROTECTOR
75
76config SUPERH64
77 def_bool ARCH = "sh64"
78 select HAVE_EXIT_THREAD
79 select KALLSYMS
80
81config ARCH_DEFCONFIG
82 string
83 default "arch/sh/configs/shx3_defconfig" if SUPERH32
84 default "arch/sh/configs/cayman_defconfig" if SUPERH64
85
86config RWSEM_GENERIC_SPINLOCK
87 def_bool y
88
89config RWSEM_XCHGADD_ALGORITHM
90 bool
91
92config GENERIC_BUG
93 def_bool y
94 depends on BUG && SUPERH32
95
96config GENERIC_CSUM
97 def_bool y
98 depends on SUPERH64
99
100config GENERIC_HWEIGHT
101 def_bool y
102
103config GENERIC_CALIBRATE_DELAY
104 bool
105
106config GENERIC_LOCKBREAK
107 def_bool y
108 depends on SMP && PREEMPT
109
110config ARCH_SUSPEND_POSSIBLE
111 def_bool n
112
113config ARCH_HIBERNATION_POSSIBLE
114 def_bool n
115
116config SYS_SUPPORTS_APM_EMULATION
117 bool
118 select ARCH_SUSPEND_POSSIBLE
119
120config SYS_SUPPORTS_HUGETLBFS
121 bool
122
123config SYS_SUPPORTS_SMP
124 bool
125
126config SYS_SUPPORTS_NUMA
127 bool
128
129config SYS_SUPPORTS_PCI
130 bool
131
132config STACKTRACE_SUPPORT
133 def_bool y
134
135config LOCKDEP_SUPPORT
136 def_bool y
137
138config ARCH_HAS_ILOG2_U32
139 def_bool n
140
141config ARCH_HAS_ILOG2_U64
142 def_bool n
143
144config NO_IOPORT_MAP
145 def_bool !PCI
146 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
147 !SH_HP6XX && !SH_SOLUTION_ENGINE
148
149config IO_TRAPPED
150 bool
151
152config SWAP_IO_SPACE
153 bool
154
155config DMA_COHERENT
156 bool
157
158config DMA_NONCOHERENT
159 def_bool !DMA_COHERENT
160
161config NEED_DMA_MAP_STATE
162 def_bool DMA_NONCOHERENT
163
164config NEED_SG_DMA_LENGTH
165 def_bool y
166
167config PGTABLE_LEVELS
168 default 3 if X2TLB
169 default 2
170
171source "init/Kconfig"
172
173source "kernel/Kconfig.freezer"
174
175menu "System type"
176
177#
178# Processor families
179#
180config CPU_SH2
181 bool
182 select SH_INTC
183
184config CPU_SH2A
185 bool
186 select CPU_SH2
187 select UNCACHED_MAPPING
188
189config CPU_J2
190 bool
191 select CPU_SH2
192 select OF
193 select OF_EARLY_FLATTREE
194
195config CPU_SH3
196 bool
197 select CPU_HAS_INTEVT
198 select CPU_HAS_SR_RB
199 select SH_INTC
200 select SYS_SUPPORTS_SH_TMU
201
202config CPU_SH4
203 bool
204 select CPU_HAS_INTEVT
205 select CPU_HAS_SR_RB
206 select CPU_HAS_FPU if !CPU_SH4AL_DSP
207 select SH_INTC
208 select SYS_SUPPORTS_SH_TMU
209 select SYS_SUPPORTS_HUGETLBFS if MMU
210
211config CPU_SH4A
212 bool
213 select CPU_SH4
214
215config CPU_SH4AL_DSP
216 bool
217 select CPU_SH4A
218 select CPU_HAS_DSP
219
220config CPU_SH5
221 bool
222 select CPU_HAS_FPU
223 select SYS_SUPPORTS_SH_TMU
224 select SYS_SUPPORTS_HUGETLBFS if MMU
225
226config CPU_SHX2
227 bool
228
229config CPU_SHX3
230 bool
231 select DMA_COHERENT
232 select SYS_SUPPORTS_SMP
233 select SYS_SUPPORTS_NUMA
234
235config ARCH_SHMOBILE
236 bool
237 select ARCH_SUSPEND_POSSIBLE
238 select PM
239
240config CPU_HAS_PMU
241 depends on CPU_SH4 || CPU_SH4A
242 default y
243 bool
244
245if SUPERH32
246
247choice
248 prompt "Processor sub-type selection"
249
250#
251# Processor subtypes
252#
253
254# SH-2 Processor Support
255
256config CPU_SUBTYPE_SH7619
257 bool "Support SH7619 processor"
258 select CPU_SH2
259 select SYS_SUPPORTS_SH_CMT
260
261config CPU_SUBTYPE_J2
262 bool "Support J2 processor"
263 select CPU_J2
264 select SYS_SUPPORTS_SMP
265 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
266
267# SH-2A Processor Support
268
269config CPU_SUBTYPE_SH7201
270 bool "Support SH7201 processor"
271 select CPU_SH2A
272 select CPU_HAS_FPU
273 select SYS_SUPPORTS_SH_MTU2
274
275config CPU_SUBTYPE_SH7203
276 bool "Support SH7203 processor"
277 select CPU_SH2A
278 select CPU_HAS_FPU
279 select SYS_SUPPORTS_SH_CMT
280 select SYS_SUPPORTS_SH_MTU2
281 select PINCTRL
282
283config CPU_SUBTYPE_SH7206
284 bool "Support SH7206 processor"
285 select CPU_SH2A
286 select SYS_SUPPORTS_SH_CMT
287 select SYS_SUPPORTS_SH_MTU2
288
289config CPU_SUBTYPE_SH7263
290 bool "Support SH7263 processor"
291 select CPU_SH2A
292 select CPU_HAS_FPU
293 select SYS_SUPPORTS_SH_CMT
294 select SYS_SUPPORTS_SH_MTU2
295
296config CPU_SUBTYPE_SH7264
297 bool "Support SH7264 processor"
298 select CPU_SH2A
299 select CPU_HAS_FPU
300 select SYS_SUPPORTS_SH_CMT
301 select SYS_SUPPORTS_SH_MTU2
302 select PINCTRL
303
304config CPU_SUBTYPE_SH7269
305 bool "Support SH7269 processor"
306 select CPU_SH2A
307 select CPU_HAS_FPU
308 select SYS_SUPPORTS_SH_CMT
309 select SYS_SUPPORTS_SH_MTU2
310 select PINCTRL
311
312config CPU_SUBTYPE_MXG
313 bool "Support MX-G processor"
314 select CPU_SH2A
315 select SYS_SUPPORTS_SH_MTU2
316 help
317 Select MX-G if running on an R8A03022BG part.
318
319# SH-3 Processor Support
320
321config CPU_SUBTYPE_SH7705
322 bool "Support SH7705 processor"
323 select CPU_SH3
324
325config CPU_SUBTYPE_SH7706
326 bool "Support SH7706 processor"
327 select CPU_SH3
328 help
329 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
330
331config CPU_SUBTYPE_SH7707
332 bool "Support SH7707 processor"
333 select CPU_SH3
334 help
335 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
336
337config CPU_SUBTYPE_SH7708
338 bool "Support SH7708 processor"
339 select CPU_SH3
340 help
341 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
342 if you have a 100 Mhz SH-3 HD6417708R CPU.
343
344config CPU_SUBTYPE_SH7709
345 bool "Support SH7709 processor"
346 select CPU_SH3
347 help
348 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
349
350config CPU_SUBTYPE_SH7710
351 bool "Support SH7710 processor"
352 select CPU_SH3
353 select CPU_HAS_DSP
354 help
355 Select SH7710 if you have a SH3-DSP SH7710 CPU.
356
357config CPU_SUBTYPE_SH7712
358 bool "Support SH7712 processor"
359 select CPU_SH3
360 select CPU_HAS_DSP
361 help
362 Select SH7712 if you have a SH3-DSP SH7712 CPU.
363
364config CPU_SUBTYPE_SH7720
365 bool "Support SH7720 processor"
366 select CPU_SH3
367 select CPU_HAS_DSP
368 select SYS_SUPPORTS_SH_CMT
369 select USB_OHCI_SH if USB_OHCI_HCD
370 select PINCTRL
371 help
372 Select SH7720 if you have a SH3-DSP SH7720 CPU.
373
374config CPU_SUBTYPE_SH7721
375 bool "Support SH7721 processor"
376 select CPU_SH3
377 select CPU_HAS_DSP
378 select SYS_SUPPORTS_SH_CMT
379 select USB_OHCI_SH if USB_OHCI_HCD
380 help
381 Select SH7721 if you have a SH3-DSP SH7721 CPU.
382
383# SH-4 Processor Support
384
385config CPU_SUBTYPE_SH7750
386 bool "Support SH7750 processor"
387 select CPU_SH4
388 help
389 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
390
391config CPU_SUBTYPE_SH7091
392 bool "Support SH7091 processor"
393 select CPU_SH4
394 help
395 Select SH7091 if you have an SH-4 based Sega device (such as
396 the Dreamcast, Naomi, and Naomi 2).
397
398config CPU_SUBTYPE_SH7750R
399 bool "Support SH7750R processor"
400 select CPU_SH4
401
402config CPU_SUBTYPE_SH7750S
403 bool "Support SH7750S processor"
404 select CPU_SH4
405
406config CPU_SUBTYPE_SH7751
407 bool "Support SH7751 processor"
408 select CPU_SH4
409 help
410 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
411 or if you have a HD6417751R CPU.
412
413config CPU_SUBTYPE_SH7751R
414 bool "Support SH7751R processor"
415 select CPU_SH4
416
417config CPU_SUBTYPE_SH7760
418 bool "Support SH7760 processor"
419 select CPU_SH4
420
421config CPU_SUBTYPE_SH4_202
422 bool "Support SH4-202 processor"
423 select CPU_SH4
424
425# SH-4A Processor Support
426
427config CPU_SUBTYPE_SH7723
428 bool "Support SH7723 processor"
429 select CPU_SH4A
430 select CPU_SHX2
431 select ARCH_SHMOBILE
432 select ARCH_SPARSEMEM_ENABLE
433 select SYS_SUPPORTS_SH_CMT
434 select PINCTRL
435 help
436 Select SH7723 if you have an SH-MobileR2 CPU.
437
438config CPU_SUBTYPE_SH7724
439 bool "Support SH7724 processor"
440 select CPU_SH4A
441 select CPU_SHX2
442 select ARCH_SHMOBILE
443 select ARCH_SPARSEMEM_ENABLE
444 select SYS_SUPPORTS_SH_CMT
445 select PINCTRL
446 help
447 Select SH7724 if you have an SH-MobileR2R CPU.
448
449config CPU_SUBTYPE_SH7734
450 bool "Support SH7734 processor"
451 select CPU_SH4A
452 select CPU_SHX2
453 select PINCTRL
454 help
455 Select SH7734 if you have a SH4A SH7734 CPU.
456
457config CPU_SUBTYPE_SH7757
458 bool "Support SH7757 processor"
459 select CPU_SH4A
460 select CPU_SHX2
461 select PINCTRL
462 help
463 Select SH7757 if you have a SH4A SH7757 CPU.
464
465config CPU_SUBTYPE_SH7763
466 bool "Support SH7763 processor"
467 select CPU_SH4A
468 select USB_OHCI_SH if USB_OHCI_HCD
469 help
470 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
471
472config CPU_SUBTYPE_SH7770
473 bool "Support SH7770 processor"
474 select CPU_SH4A
475
476config CPU_SUBTYPE_SH7780
477 bool "Support SH7780 processor"
478 select CPU_SH4A
479
480config CPU_SUBTYPE_SH7785
481 bool "Support SH7785 processor"
482 select CPU_SH4A
483 select CPU_SHX2
484 select ARCH_SPARSEMEM_ENABLE
485 select SYS_SUPPORTS_NUMA
486 select PINCTRL
487
488config CPU_SUBTYPE_SH7786
489 bool "Support SH7786 processor"
490 select CPU_SH4A
491 select CPU_SHX3
492 select CPU_HAS_PTEAEX
493 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
494 select USB_OHCI_SH if USB_OHCI_HCD
495 select USB_EHCI_SH if USB_EHCI_HCD
496 select PINCTRL
497
498config CPU_SUBTYPE_SHX3
499 bool "Support SH-X3 processor"
500 select CPU_SH4A
501 select CPU_SHX3
502 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
503 select GPIOLIB
504 select PINCTRL
505
506# SH4AL-DSP Processor Support
507
508config CPU_SUBTYPE_SH7343
509 bool "Support SH7343 processor"
510 select CPU_SH4AL_DSP
511 select ARCH_SHMOBILE
512 select SYS_SUPPORTS_SH_CMT
513
514config CPU_SUBTYPE_SH7722
515 bool "Support SH7722 processor"
516 select CPU_SH4AL_DSP
517 select CPU_SHX2
518 select ARCH_SHMOBILE
519 select ARCH_SPARSEMEM_ENABLE
520 select SYS_SUPPORTS_NUMA
521 select SYS_SUPPORTS_SH_CMT
522 select PINCTRL
523
524config CPU_SUBTYPE_SH7366
525 bool "Support SH7366 processor"
526 select CPU_SH4AL_DSP
527 select CPU_SHX2
528 select ARCH_SHMOBILE
529 select ARCH_SPARSEMEM_ENABLE
530 select SYS_SUPPORTS_NUMA
531 select SYS_SUPPORTS_SH_CMT
532
533endchoice
534
535endif
536
537if SUPERH64
538
539choice
540 prompt "Processor sub-type selection"
541
542# SH-5 Processor Support
543
544config CPU_SUBTYPE_SH5_101
545 bool "Support SH5-101 processor"
546 select CPU_SH5
547
548config CPU_SUBTYPE_SH5_103
549 bool "Support SH5-103 processor"
550 select CPU_SH5
551
552endchoice
553
554endif
555
556source "arch/sh/mm/Kconfig"
557
558source "arch/sh/Kconfig.cpu"
559
560source "arch/sh/boards/Kconfig"
561
562menu "Timer and clock configuration"
563
564config SH_PCLK_FREQ
565 int "Peripheral clock frequency (in Hz)"
566 depends on SH_CLK_CPG_LEGACY
567 default "31250000" if CPU_SUBTYPE_SH7619
568 default "33333333" if CPU_SUBTYPE_SH7770 || \
569 CPU_SUBTYPE_SH7760 || \
570 CPU_SUBTYPE_SH7705 || \
571 CPU_SUBTYPE_SH7203 || \
572 CPU_SUBTYPE_SH7206 || \
573 CPU_SUBTYPE_SH7263 || \
574 CPU_SUBTYPE_MXG
575 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
576 default "66000000" if CPU_SUBTYPE_SH4_202
577 default "50000000"
578 help
579 This option is used to specify the peripheral clock frequency.
580 This is necessary for determining the reference clock value on
581 platforms lacking an RTC.
582
583config SH_CLK_CPG
584 def_bool y
585
586config SH_CLK_CPG_LEGACY
587 depends on SH_CLK_CPG
588 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
589 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
590 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
591 !CPU_SUBTYPE_SH7269
592
593endmenu
594
595menu "CPU Frequency scaling"
596source "drivers/cpufreq/Kconfig"
597endmenu
598
599source "arch/sh/drivers/Kconfig"
600
601endmenu
602
603menu "Kernel features"
604
605source kernel/Kconfig.hz
606
607config KEXEC
608 bool "kexec system call (EXPERIMENTAL)"
609 depends on SUPERH32 && MMU
610 select KEXEC_CORE
611 help
612 kexec is a system call that implements the ability to shutdown your
613 current kernel, and to start another kernel. It is like a reboot
614 but it is independent of the system firmware. And like a reboot
615 you can start any kernel with it, not just Linux.
616
617 The name comes from the similarity to the exec system call.
618
619 It is an ongoing process to be certain the hardware in a machine
620 is properly shutdown, so do not be surprised if this code does not
621 initially work for you. As of this writing the exact hardware
622 interface is strongly in flux, so no good recommendation can be
623 made.
624
625config CRASH_DUMP
626 bool "kernel crash dumps (EXPERIMENTAL)"
627 depends on SUPERH32 && BROKEN_ON_SMP
628 help
629 Generate crash dump after being started by kexec.
630 This should be normally only set in special crash dump kernels
631 which are loaded in the main kernel with kexec-tools into
632 a specially reserved region and then later executed after
633 a crash by kdump/kexec. The crash dump kernel must be compiled
634 to a memory address not used by the main kernel using
635 PHYSICAL_START.
636
637 For more details see Documentation/kdump/kdump.txt
638
639config KEXEC_JUMP
640 bool "kexec jump (EXPERIMENTAL)"
641 depends on SUPERH32 && KEXEC && HIBERNATION
642 help
643 Jump between original kernel and kexeced kernel and invoke
644 code via KEXEC
645
646config PHYSICAL_START
647 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
648 default MEMORY_START
649 ---help---
650 This gives the physical address where the kernel is loaded
651 and is ordinarily the same as MEMORY_START.
652
653 Different values are primarily used in the case of kexec on panic
654 where the fail safe kernel needs to run at a different address
655 than the panic-ed kernel.
656
657config SECCOMP
658 bool "Enable seccomp to safely compute untrusted bytecode"
659 depends on PROC_FS
660 help
661 This kernel feature is useful for number crunching applications
662 that may need to compute untrusted bytecode during their
663 execution. By using pipes or other transports made available to
664 the process as file descriptors supporting the read/write
665 syscalls, it's possible to isolate those applications in
666 their own address space using seccomp. Once seccomp is
667 enabled via prctl, it cannot be disabled and the task is only
668 allowed to execute a few safe syscalls defined by each seccomp
669 mode.
670
671 If unsure, say N.
672
673config SMP
674 bool "Symmetric multi-processing support"
675 depends on SYS_SUPPORTS_SMP
676 ---help---
677 This enables support for systems with more than one CPU. If you have
678 a system with only one CPU, say N. If you have a system with more
679 than one CPU, say Y.
680
681 If you say N here, the kernel will run on uni- and multiprocessor
682 machines, but will use only one CPU of a multiprocessor machine. If
683 you say Y here, the kernel will run on many, but not all,
684 uniprocessor machines. On a uniprocessor machine, the kernel
685 will run faster if you say N here.
686
687 People using multiprocessor machines who say Y here should also say
688 Y to "Enhanced Real Time Clock Support", below.
689
690 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
691 available at <http://www.tldp.org/docs.html#howto>.
692
693 If you don't know what to do here, say N.
694
695config NR_CPUS
696 int "Maximum number of CPUs (2-32)"
697 range 2 32
698 depends on SMP
699 default "4" if CPU_SUBTYPE_SHX3
700 default "2"
701 help
702 This allows you to specify the maximum number of CPUs which this
703 kernel will support. The maximum supported value is 32 and the
704 minimum value which makes sense is 2.
705
706 This is purely to save memory - each supported CPU adds
707 approximately eight kilobytes to the kernel image.
708
709config HOTPLUG_CPU
710 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
711 depends on SMP
712 help
713 Say Y here to experiment with turning CPUs off and on. CPUs
714 can be controlled through /sys/devices/system/cpu.
715
716source "kernel/Kconfig.preempt"
717
718config GUSA
719 def_bool y
720 depends on !SMP && SUPERH32
721 help
722 This enables support for gUSA (general UserSpace Atomicity).
723 This is the default implementation for both UP and non-ll/sc
724 CPUs, and is used by the libc, amongst others.
725
726 For additional information, design information can be found
727 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
728
729 This should only be disabled for special cases where alternate
730 atomicity implementations exist.
731
732config GUSA_RB
733 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
734 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
735 help
736 Enabling this option will allow the kernel to implement some
737 atomic operations using a software implementation of load-locked/
738 store-conditional (LLSC). On machines which do not have hardware
739 LLSC, this should be more efficient than the other alternative of
740 disabling interrupts around the atomic sequence.
741
742config HW_PERF_EVENTS
743 bool "Enable hardware performance counter support for perf events"
744 depends on PERF_EVENTS && CPU_HAS_PMU
745 default y
746 help
747 Enable hardware performance counter support for perf events. If
748 disabled, perf events will use software events only.
749
750source "drivers/sh/Kconfig"
751
752endmenu
753
754menu "Boot options"
755
756config USE_BUILTIN_DTB
757 bool "Use builtin DTB"
758 default n
759 depends on SH_DEVICE_TREE
760 help
761 Link a device tree blob for particular hardware into the kernel,
762 suppressing use of the DTB pointer provided by the bootloader.
763 This option should only be used with legacy bootloaders that are
764 not capable of providing a DTB to the kernel, or for experimental
765 hardware without stable device tree bindings.
766
767config BUILTIN_DTB_SOURCE
768 string "Source file for builtin DTB"
769 default ""
770 depends on USE_BUILTIN_DTB
771 help
772 Base name (without suffix, relative to arch/sh/boot/dts) for the
773 a DTS file that will be used to produce the DTB linked into the
774 kernel.
775
776config ZERO_PAGE_OFFSET
777 hex
778 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
779 SH_7751_SOLUTION_ENGINE
780 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
781 default "0x00002000" if PAGE_SIZE_8KB
782 default "0x00001000"
783 help
784 This sets the default offset of zero page.
785
786config BOOT_LINK_OFFSET
787 hex
788 default "0x00210000" if SH_SHMIN
789 default "0x00400000" if SH_CAYMAN
790 default "0x00810000" if SH_7780_SOLUTION_ENGINE
791 default "0x009e0000" if SH_TITAN
792 default "0x01800000" if SH_SDK7780
793 default "0x02000000" if SH_EDOSK7760
794 default "0x00800000"
795 help
796 This option allows you to set the link address offset of the zImage.
797 This can be useful if you are on a board which has a small amount of
798 memory.
799
800config ENTRY_OFFSET
801 hex
802 default "0x00001000" if PAGE_SIZE_4KB
803 default "0x00002000" if PAGE_SIZE_8KB
804 default "0x00004000" if PAGE_SIZE_16KB
805 default "0x00010000" if PAGE_SIZE_64KB
806 default "0x00000000"
807
808config ROMIMAGE_MMCIF
809 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
810 depends on CPU_SUBTYPE_SH7724
811 help
812 Say Y here to include experimental MMCIF loading code in
813 romImage. With this enabled it is possible to write the romImage
814 kernel image to an MMC card and boot the kernel straight from
815 the reset vector. At reset the processor Mask ROM will load the
816 first part of the romImage which in turn loads the rest the kernel
817 image to RAM using the MMCIF hardware block.
818
819choice
820 prompt "Kernel command line"
821 optional
822 default CMDLINE_OVERWRITE
823 help
824 Setting this option allows the kernel command line arguments
825 to be set.
826
827config CMDLINE_OVERWRITE
828 bool "Overwrite bootloader kernel arguments"
829 help
830 Given string will overwrite any arguments passed in by
831 a bootloader.
832
833config CMDLINE_EXTEND
834 bool "Extend bootloader kernel arguments"
835 help
836 Given string will be concatenated with arguments passed in
837 by a bootloader.
838
839endchoice
840
841config CMDLINE
842 string "Kernel command line arguments string"
843 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
844 default "console=ttySC1,115200"
845
846endmenu
847
848menu "Bus options"
849
850config SUPERHYWAY
851 tristate "SuperHyway Bus support"
852 depends on CPU_SUBTYPE_SH4_202
853
854config MAPLE
855 bool "Maple Bus support"
856 depends on SH_DREAMCAST
857 help
858 The Maple Bus is SEGA's serial communication bus for peripherals
859 on the Dreamcast. Without this bus support you won't be able to
860 get your Dreamcast keyboard etc to work, so most users
861 probably want to say 'Y' here, unless you are only using the
862 Dreamcast with a serial line terminal or a remote network
863 connection.
864
865config PCI
866 bool "PCI support"
867 depends on SYS_SUPPORTS_PCI
868 select PCI_DOMAINS
869 select GENERIC_PCI_IOMAP
870 select NO_GENERIC_PCI_IOPORT_MAP
871 help
872 Find out whether you have a PCI motherboard. PCI is the name of a
873 bus system, i.e. the way the CPU talks to the other stuff inside
874 your box. If you have PCI, say Y, otherwise N.
875
876config PCI_DOMAINS
877 bool
878
879source "drivers/pci/Kconfig"
880
881source "drivers/pcmcia/Kconfig"
882
883endmenu
884
885menu "Executable file formats"
886
887source "fs/Kconfig.binfmt"
888
889endmenu
890
891menu "Power management options (EXPERIMENTAL)"
892
893source "kernel/power/Kconfig"
894
895source "drivers/cpuidle/Kconfig"
896
897endmenu
898
899source "net/Kconfig"
900
901source "drivers/Kconfig"
902
903source "fs/Kconfig"
904
905source "arch/sh/Kconfig.debug"
906
907source "security/Kconfig"
908
909source "crypto/Kconfig"
910
911source "lib/Kconfig"