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Linux/arch/sh/Kconfig

  1 config 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 
 57 config 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 
 76 config SUPERH64
 77         def_bool ARCH = "sh64"
 78         select HAVE_EXIT_THREAD
 79         select KALLSYMS
 80 
 81 config ARCH_DEFCONFIG
 82         string
 83         default "arch/sh/configs/shx3_defconfig" if SUPERH32
 84         default "arch/sh/configs/cayman_defconfig" if SUPERH64
 85 
 86 config RWSEM_GENERIC_SPINLOCK
 87         def_bool y
 88 
 89 config RWSEM_XCHGADD_ALGORITHM
 90         bool
 91 
 92 config GENERIC_BUG
 93         def_bool y
 94         depends on BUG && SUPERH32
 95 
 96 config GENERIC_CSUM
 97         def_bool y
 98         depends on SUPERH64
 99 
100 config GENERIC_HWEIGHT
101         def_bool y
102 
103 config GENERIC_CALIBRATE_DELAY
104         bool
105 
106 config GENERIC_LOCKBREAK
107         def_bool y
108         depends on SMP && PREEMPT
109 
110 config ARCH_SUSPEND_POSSIBLE
111         def_bool n
112 
113 config ARCH_HIBERNATION_POSSIBLE
114         def_bool n
115 
116 config SYS_SUPPORTS_APM_EMULATION
117         bool
118         select ARCH_SUSPEND_POSSIBLE
119 
120 config SYS_SUPPORTS_HUGETLBFS
121         bool
122 
123 config SYS_SUPPORTS_SMP
124         bool
125 
126 config SYS_SUPPORTS_NUMA
127         bool
128 
129 config SYS_SUPPORTS_PCI
130         bool
131 
132 config STACKTRACE_SUPPORT
133         def_bool y
134 
135 config LOCKDEP_SUPPORT
136         def_bool y
137 
138 config ARCH_HAS_ILOG2_U32
139         def_bool n
140 
141 config ARCH_HAS_ILOG2_U64
142         def_bool n
143 
144 config NO_IOPORT_MAP
145         def_bool !PCI
146         depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
147                    !SH_HP6XX && !SH_SOLUTION_ENGINE
148 
149 config IO_TRAPPED
150         bool
151 
152 config SWAP_IO_SPACE
153         bool
154 
155 config DMA_COHERENT
156         bool
157 
158 config DMA_NONCOHERENT
159         def_bool !DMA_COHERENT
160 
161 config NEED_DMA_MAP_STATE
162         def_bool DMA_NONCOHERENT
163 
164 config NEED_SG_DMA_LENGTH
165         def_bool y
166 
167 config PGTABLE_LEVELS
168         default 3 if X2TLB
169         default 2
170 
171 source "init/Kconfig"
172 
173 source "kernel/Kconfig.freezer"
174 
175 menu "System type"
176 
177 #
178 # Processor families
179 #
180 config CPU_SH2
181         bool
182         select SH_INTC
183 
184 config CPU_SH2A
185         bool
186         select CPU_SH2
187         select UNCACHED_MAPPING
188 
189 config CPU_J2
190         bool
191         select CPU_SH2
192         select OF
193         select OF_EARLY_FLATTREE
194 
195 config 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 
202 config 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 
211 config CPU_SH4A
212         bool
213         select CPU_SH4
214 
215 config CPU_SH4AL_DSP
216         bool
217         select CPU_SH4A
218         select CPU_HAS_DSP
219 
220 config CPU_SH5
221         bool
222         select CPU_HAS_FPU
223         select SYS_SUPPORTS_SH_TMU
224         select SYS_SUPPORTS_HUGETLBFS if MMU
225 
226 config CPU_SHX2
227         bool
228 
229 config CPU_SHX3
230         bool
231         select DMA_COHERENT
232         select SYS_SUPPORTS_SMP
233         select SYS_SUPPORTS_NUMA
234 
235 config ARCH_SHMOBILE
236         bool
237         select ARCH_SUSPEND_POSSIBLE
238         select PM
239 
240 config CPU_HAS_PMU
241        depends on CPU_SH4 || CPU_SH4A
242        default y
243        bool
244 
245 if SUPERH32
246 
247 choice
248         prompt "Processor sub-type selection"
249 
250 #
251 # Processor subtypes
252 #
253 
254 # SH-2 Processor Support
255 
256 config CPU_SUBTYPE_SH7619
257         bool "Support SH7619 processor"
258         select CPU_SH2
259         select SYS_SUPPORTS_SH_CMT
260 
261 config 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 
269 config CPU_SUBTYPE_SH7201
270         bool "Support SH7201 processor"
271         select CPU_SH2A
272         select CPU_HAS_FPU
273         select SYS_SUPPORTS_SH_MTU2
274  
275 config 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 
283 config 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 
289 config 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 
296 config 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 
304 config 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 
312 config 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 
321 config CPU_SUBTYPE_SH7705
322         bool "Support SH7705 processor"
323         select CPU_SH3
324 
325 config 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 
331 config 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 
337 config 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 
344 config 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 
350 config 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 
357 config 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 
364 config 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 
374 config 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 
385 config 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 
391 config 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 
398 config CPU_SUBTYPE_SH7750R
399         bool "Support SH7750R processor"
400         select CPU_SH4
401 
402 config CPU_SUBTYPE_SH7750S
403         bool "Support SH7750S processor"
404         select CPU_SH4
405 
406 config 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 
413 config CPU_SUBTYPE_SH7751R
414         bool "Support SH7751R processor"
415         select CPU_SH4
416 
417 config CPU_SUBTYPE_SH7760
418         bool "Support SH7760 processor"
419         select CPU_SH4
420 
421 config CPU_SUBTYPE_SH4_202
422         bool "Support SH4-202 processor"
423         select CPU_SH4
424 
425 # SH-4A Processor Support
426 
427 config 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 
438 config 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 
449 config 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 
457 config 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 
465 config 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 
472 config CPU_SUBTYPE_SH7770
473         bool "Support SH7770 processor"
474         select CPU_SH4A
475 
476 config CPU_SUBTYPE_SH7780
477         bool "Support SH7780 processor"
478         select CPU_SH4A
479 
480 config 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 
488 config 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 
498 config 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 
508 config CPU_SUBTYPE_SH7343
509         bool "Support SH7343 processor"
510         select CPU_SH4AL_DSP
511         select ARCH_SHMOBILE
512         select SYS_SUPPORTS_SH_CMT
513 
514 config 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 
524 config 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 
533 endchoice
534 
535 endif
536 
537 if SUPERH64
538 
539 choice
540         prompt "Processor sub-type selection"
541 
542 # SH-5 Processor Support
543 
544 config CPU_SUBTYPE_SH5_101
545         bool "Support SH5-101 processor"
546         select CPU_SH5
547 
548 config CPU_SUBTYPE_SH5_103
549         bool "Support SH5-103 processor"
550         select CPU_SH5
551 
552 endchoice
553 
554 endif
555 
556 source "arch/sh/mm/Kconfig"
557  
558 source "arch/sh/Kconfig.cpu"
559 
560 source "arch/sh/boards/Kconfig"
561 
562 menu "Timer and clock configuration"
563 
564 config 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 
583 config SH_CLK_CPG
584         def_bool y
585 
586 config 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 
593 endmenu
594 
595 menu "CPU Frequency scaling"
596 source "drivers/cpufreq/Kconfig"
597 endmenu
598 
599 source "arch/sh/drivers/Kconfig"
600 
601 endmenu
602 
603 menu "Kernel features"
604 
605 source kernel/Kconfig.hz
606 
607 config 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 
625 config 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 
639 config 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 
646 config 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 
657 config 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 
673 config 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 
695 config 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 
709 config 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 
716 source "kernel/Kconfig.preempt"
717 
718 config 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 
732 config 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 
742 config 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 
750 source "drivers/sh/Kconfig"
751 
752 endmenu
753 
754 menu "Boot options"
755 
756 config 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 
767 config 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 
776 config 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 
786 config 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 
800 config 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 
808 config 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 
819 choice
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 
827 config CMDLINE_OVERWRITE
828         bool "Overwrite bootloader kernel arguments"
829         help
830           Given string will overwrite any arguments passed in by
831           a bootloader.
832 
833 config 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 
839 endchoice
840 
841 config CMDLINE
842         string "Kernel command line arguments string"
843         depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
844         default "console=ttySC1,115200"
845 
846 endmenu
847 
848 menu "Bus options"
849 
850 config SUPERHYWAY
851         tristate "SuperHyway Bus support"
852         depends on CPU_SUBTYPE_SH4_202
853 
854 config 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 
865 config 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 
876 config PCI_DOMAINS
877         bool
878 
879 source "drivers/pci/Kconfig"
880 
881 source "drivers/pcmcia/Kconfig"
882 
883 endmenu
884 
885 menu "Executable file formats"
886 
887 source "fs/Kconfig.binfmt"
888 
889 endmenu
890 
891 menu "Power management options (EXPERIMENTAL)"
892 
893 source "kernel/power/Kconfig"
894 
895 source "drivers/cpuidle/Kconfig"
896 
897 endmenu
898 
899 source "net/Kconfig"
900 
901 source "drivers/Kconfig"
902 
903 source "fs/Kconfig"
904 
905 source "arch/sh/Kconfig.debug"
906 
907 source "security/Kconfig"
908 
909 source "crypto/Kconfig"
910 
911 source "lib/Kconfig"

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