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

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