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

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