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Linux/arch/sh/Kconfig

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

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