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1config 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
52config 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
72config SUPERH64
73 def_bool ARCH = "sh64"
74 select KALLSYMS
75
76config ARCH_DEFCONFIG
77 string
78 default "arch/sh/configs/shx3_defconfig" if SUPERH32
79 default "arch/sh/configs/cayman_defconfig" if SUPERH64
80
81config RWSEM_GENERIC_SPINLOCK
82 def_bool y
83
84config RWSEM_XCHGADD_ALGORITHM
85 bool
86
87config GENERIC_BUG
88 def_bool y
89 depends on BUG && SUPERH32
90
91config GENERIC_CSUM
92 def_bool y
93 depends on SUPERH64
94
95config GENERIC_HWEIGHT
96 def_bool y
97
98config GENERIC_CALIBRATE_DELAY
99 bool
100
101config GENERIC_LOCKBREAK
102 def_bool y
103 depends on SMP && PREEMPT
104
105config ARCH_SUSPEND_POSSIBLE
106 def_bool n
107
108config ARCH_HIBERNATION_POSSIBLE
109 def_bool n
110
111config SYS_SUPPORTS_APM_EMULATION
112 bool
113 select ARCH_SUSPEND_POSSIBLE
114
115config SYS_SUPPORTS_HUGETLBFS
116 bool
117
118config SYS_SUPPORTS_SMP
119 bool
120
121config SYS_SUPPORTS_NUMA
122 bool
123
124config SYS_SUPPORTS_PCI
125 bool
126
127config STACKTRACE_SUPPORT
128 def_bool y
129
130config LOCKDEP_SUPPORT
131 def_bool y
132
133config HAVE_LATENCYTOP_SUPPORT
134 def_bool y
135
136config ARCH_HAS_ILOG2_U32
137 def_bool n
138
139config ARCH_HAS_ILOG2_U64
140 def_bool n
141
142config NO_IOPORT_MAP
143 def_bool !PCI
144 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
145 !SH_HP6XX && !SH_SOLUTION_ENGINE
146
147config IO_TRAPPED
148 bool
149
150config SWAP_IO_SPACE
151 bool
152
153config DMA_COHERENT
154 bool
155
156config DMA_NONCOHERENT
157 def_bool !DMA_COHERENT
158
159config NEED_DMA_MAP_STATE
160 def_bool DMA_NONCOHERENT
161
162config NEED_SG_DMA_LENGTH
163 def_bool y
164
165source "init/Kconfig"
166
167source "kernel/Kconfig.freezer"
168
169menu "System type"
170
171#
172# Processor families
173#
174config CPU_SH2
175 bool
176
177config CPU_SH2A
178 bool
179 select CPU_SH2
180 select UNCACHED_MAPPING
181
182config CPU_SH3
183 bool
184 select CPU_HAS_INTEVT
185 select CPU_HAS_SR_RB
186 select SYS_SUPPORTS_SH_TMU
187
188config 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
196config CPU_SH4A
197 bool
198 select CPU_SH4
199
200config CPU_SH4AL_DSP
201 bool
202 select CPU_SH4A
203 select CPU_HAS_DSP
204
205config CPU_SH5
206 bool
207 select CPU_HAS_FPU
208 select SYS_SUPPORTS_SH_TMU
209 select SYS_SUPPORTS_HUGETLBFS if MMU
210
211config CPU_SHX2
212 bool
213
214config CPU_SHX3
215 bool
216 select DMA_COHERENT
217 select SYS_SUPPORTS_SMP
218 select SYS_SUPPORTS_NUMA
219
220config ARCH_SHMOBILE
221 bool
222 select ARCH_SUSPEND_POSSIBLE
223 select PM
224 select PM_RUNTIME
225
226config CPU_HAS_PMU
227 depends on CPU_SH4 || CPU_SH4A
228 default y
229 bool
230
231if SUPERH32
232
233choice
234 prompt "Processor sub-type selection"
235
236#
237# Processor subtypes
238#
239
240# SH-2 Processor Support
241
242config 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
249config CPU_SUBTYPE_SH7201
250 bool "Support SH7201 processor"
251 select CPU_SH2A
252 select CPU_HAS_FPU
253 select SYS_SUPPORTS_SH_MTU2
254
255config 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
264config 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
270config 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
277config 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
285config 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
293config 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
302config CPU_SUBTYPE_SH7705
303 bool "Support SH7705 processor"
304 select CPU_SH3
305
306config 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
312config 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
318config 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
325config 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
331config 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
338config 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
345config 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
356config 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
367config 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
373config 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
380config CPU_SUBTYPE_SH7750R
381 bool "Support SH7750R processor"
382 select CPU_SH4
383
384config CPU_SUBTYPE_SH7750S
385 bool "Support SH7750S processor"
386 select CPU_SH4
387
388config 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
395config CPU_SUBTYPE_SH7751R
396 bool "Support SH7751R processor"
397 select CPU_SH4
398
399config CPU_SUBTYPE_SH7760
400 bool "Support SH7760 processor"
401 select CPU_SH4
402
403config CPU_SUBTYPE_SH4_202
404 bool "Support SH4-202 processor"
405 select CPU_SH4
406
407# SH-4A Processor Support
408
409config 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
421config 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
433config 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
442config 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
451config 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
458config CPU_SUBTYPE_SH7770
459 bool "Support SH7770 processor"
460 select CPU_SH4A
461
462config CPU_SUBTYPE_SH7780
463 bool "Support SH7780 processor"
464 select CPU_SH4A
465
466config 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
475config 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
486config 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
496config CPU_SUBTYPE_SH7343
497 bool "Support SH7343 processor"
498 select CPU_SH4AL_DSP
499 select ARCH_SHMOBILE
500 select SYS_SUPPORTS_SH_CMT
501
502config 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
513config 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
522endchoice
523
524endif
525
526if SUPERH64
527
528choice
529 prompt "Processor sub-type selection"
530
531# SH-5 Processor Support
532
533config CPU_SUBTYPE_SH5_101
534 bool "Support SH5-101 processor"
535 select CPU_SH5
536
537config CPU_SUBTYPE_SH5_103
538 bool "Support SH5-103 processor"
539 select CPU_SH5
540
541endchoice
542
543endif
544
545source "arch/sh/mm/Kconfig"
546
547source "arch/sh/Kconfig.cpu"
548
549source "arch/sh/boards/Kconfig"
550
551menu "Timer and clock configuration"
552
553config 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
572config SH_CLK_CPG
573 def_bool y
574
575config 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
582endmenu
583
584menu "CPU Frequency scaling"
585source "drivers/cpufreq/Kconfig"
586endmenu
587
588source "arch/sh/drivers/Kconfig"
589
590endmenu
591
592menu "Kernel features"
593
594source kernel/Kconfig.hz
595
596config 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
613config 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
627config 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
634config 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
645config 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
661config 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
683config 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
697config 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
704source "kernel/Kconfig.preempt"
705
706config 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
720config 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
730config 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
738source "drivers/sh/Kconfig"
739
740endmenu
741
742menu "Boot options"
743
744config 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
754config 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
768config 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
776config 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
787choice
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
795config CMDLINE_OVERWRITE
796 bool "Overwrite bootloader kernel arguments"
797 help
798 Given string will overwrite any arguments passed in by
799 a bootloader.
800
801config 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
807endchoice
808
809config CMDLINE
810 string "Kernel command line arguments string"
811 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
812 default "console=ttySC1,115200"
813
814endmenu
815
816menu "Bus options"
817
818config SUPERHYWAY
819 tristate "SuperHyway Bus support"
820 depends on CPU_SUBTYPE_SH4_202
821
822config 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
833config 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
844config PCI_DOMAINS
845 bool
846
847source "drivers/pci/pcie/Kconfig"
848
849source "drivers/pci/Kconfig"
850
851source "drivers/pcmcia/Kconfig"
852
853source "drivers/pci/hotplug/Kconfig"
854
855endmenu
856
857menu "Executable file formats"
858
859source "fs/Kconfig.binfmt"
860
861endmenu
862
863menu "Power management options (EXPERIMENTAL)"
864
865source "kernel/power/Kconfig"
866
867source "drivers/cpuidle/Kconfig"
868
869endmenu
870
871source "net/Kconfig"
872
873source "drivers/Kconfig"
874
875source "fs/Kconfig"
876
877source "arch/sh/Kconfig.debug"
878
879source "security/Kconfig"
880
881source "crypto/Kconfig"
882
883source "lib/Kconfig"
1config SUPERH
2 def_bool y
3 select EXPERT
4 select CLKDEV_LOOKUP
5 select HAVE_IDE if HAS_IOPORT
6 select HAVE_MEMBLOCK
7 select HAVE_OPROFILE
8 select HAVE_GENERIC_DMA_COHERENT
9 select HAVE_ARCH_TRACEHOOK
10 select HAVE_DMA_API_DEBUG
11 select HAVE_DMA_ATTRS
12 select HAVE_IRQ_WORK
13 select HAVE_PERF_EVENTS
14 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
15 select PERF_USE_VMALLOC
16 select HAVE_KERNEL_GZIP
17 select HAVE_KERNEL_BZIP2
18 select HAVE_KERNEL_LZMA
19 select HAVE_KERNEL_XZ
20 select HAVE_KERNEL_LZO
21 select HAVE_SYSCALL_TRACEPOINTS
22 select HAVE_REGS_AND_STACK_ACCESS_API
23 select HAVE_GENERIC_HARDIRQS
24 select HAVE_SPARSE_IRQ
25 select IRQ_FORCED_THREADING
26 select RTC_LIB
27 select GENERIC_ATOMIC64
28 select GENERIC_IRQ_SHOW
29 help
30 The SuperH is a RISC processor targeted for use in embedded systems
31 and consumer electronics; it was also used in the Sega Dreamcast
32 gaming console. The SuperH port has a home page at
33 <http://www.linux-sh.org/>.
34
35config SUPERH32
36 def_bool ARCH = "sh"
37 select HAVE_KPROBES
38 select HAVE_KRETPROBES
39 select HAVE_IOREMAP_PROT if MMU && !X2TLB
40 select HAVE_FUNCTION_TRACER
41 select HAVE_FTRACE_MCOUNT_RECORD
42 select HAVE_DYNAMIC_FTRACE
43 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
44 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
45 select HAVE_FUNCTION_GRAPH_TRACER
46 select HAVE_ARCH_KGDB
47 select HAVE_HW_BREAKPOINT
48 select HAVE_MIXED_BREAKPOINTS_REGS
49 select PERF_EVENTS
50 select ARCH_HIBERNATION_POSSIBLE if MMU
51 select SPARSE_IRQ
52
53config SUPERH64
54 def_bool ARCH = "sh64"
55
56config ARCH_DEFCONFIG
57 string
58 default "arch/sh/configs/shx3_defconfig" if SUPERH32
59 default "arch/sh/configs/cayman_defconfig" if SUPERH64
60
61config RWSEM_GENERIC_SPINLOCK
62 def_bool y
63
64config RWSEM_XCHGADD_ALGORITHM
65 bool
66
67config GENERIC_BUG
68 def_bool y
69 depends on BUG && SUPERH32
70
71config GENERIC_CSUM
72 def_bool y
73 depends on SUPERH64
74
75config GENERIC_HWEIGHT
76 def_bool y
77
78config IRQ_PER_CPU
79 def_bool y
80
81config GENERIC_GPIO
82 def_bool n
83
84config GENERIC_CALIBRATE_DELAY
85 bool
86
87config GENERIC_IOMAP
88 bool
89
90config GENERIC_CLOCKEVENTS
91 def_bool y
92
93config GENERIC_CLOCKEVENTS_BROADCAST
94 bool
95
96config GENERIC_CMOS_UPDATE
97 def_bool y
98 depends on SH_SH03 || SH_DREAMCAST
99
100config GENERIC_LOCKBREAK
101 def_bool y
102 depends on SMP && PREEMPT
103
104config SYS_SUPPORTS_PM
105 bool
106 depends on !SMP
107
108config ARCH_SUSPEND_POSSIBLE
109 def_bool n
110
111config ARCH_HIBERNATION_POSSIBLE
112 def_bool n
113
114config SYS_SUPPORTS_APM_EMULATION
115 bool
116 select ARCH_SUSPEND_POSSIBLE
117
118config SYS_SUPPORTS_HUGETLBFS
119 bool
120
121config SYS_SUPPORTS_SMP
122 bool
123
124config SYS_SUPPORTS_NUMA
125 bool
126
127config SYS_SUPPORTS_PCI
128 bool
129
130config SYS_SUPPORTS_CMT
131 bool
132
133config SYS_SUPPORTS_MTU2
134 bool
135
136config SYS_SUPPORTS_TMU
137 bool
138
139config STACKTRACE_SUPPORT
140 def_bool y
141
142config LOCKDEP_SUPPORT
143 def_bool y
144
145config HAVE_LATENCYTOP_SUPPORT
146 def_bool y
147
148config ARCH_HAS_ILOG2_U32
149 def_bool n
150
151config ARCH_HAS_ILOG2_U64
152 def_bool n
153
154config ARCH_NO_VIRT_TO_BUS
155 def_bool y
156
157config ARCH_HAS_DEFAULT_IDLE
158 def_bool y
159
160config ARCH_HAS_CPU_IDLE_WAIT
161 def_bool y
162
163config NO_IOPORT
164 def_bool !PCI
165 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN
166
167config IO_TRAPPED
168 bool
169
170config DMA_COHERENT
171 bool
172
173config DMA_NONCOHERENT
174 def_bool !DMA_COHERENT
175
176config NEED_DMA_MAP_STATE
177 def_bool DMA_NONCOHERENT
178
179config NEED_SG_DMA_LENGTH
180 def_bool y
181
182source "init/Kconfig"
183
184source "kernel/Kconfig.freezer"
185
186menu "System type"
187
188#
189# Processor families
190#
191config CPU_SH2
192 bool
193
194config CPU_SH2A
195 bool
196 select CPU_SH2
197 select UNCACHED_MAPPING
198
199config CPU_SH3
200 bool
201 select CPU_HAS_INTEVT
202 select CPU_HAS_SR_RB
203 select SYS_SUPPORTS_TMU
204
205config CPU_SH4
206 bool
207 select CPU_HAS_INTEVT
208 select CPU_HAS_SR_RB
209 select CPU_HAS_FPU if !CPU_SH4AL_DSP
210 select SYS_SUPPORTS_TMU
211 select SYS_SUPPORTS_HUGETLBFS if MMU
212
213config CPU_SH4A
214 bool
215 select CPU_SH4
216
217config CPU_SH4AL_DSP
218 bool
219 select CPU_SH4A
220 select CPU_HAS_DSP
221
222config CPU_SH5
223 bool
224 select CPU_HAS_FPU
225 select SYS_SUPPORTS_TMU
226 select SYS_SUPPORTS_HUGETLBFS if MMU
227
228config CPU_SHX2
229 bool
230
231config CPU_SHX3
232 bool
233 select DMA_COHERENT
234 select SYS_SUPPORTS_SMP
235 select SYS_SUPPORTS_NUMA
236
237config ARCH_SHMOBILE
238 bool
239 select ARCH_SUSPEND_POSSIBLE
240 select PM
241 select PM_RUNTIME
242
243config CPU_HAS_PMU
244 depends on CPU_SH4 || CPU_SH4A
245 default y
246 bool
247
248if SUPERH32
249
250choice
251 prompt "Processor sub-type selection"
252
253#
254# Processor subtypes
255#
256
257# SH-2 Processor Support
258
259config CPU_SUBTYPE_SH7619
260 bool "Support SH7619 processor"
261 select CPU_SH2
262 select SYS_SUPPORTS_CMT
263
264# SH-2A Processor Support
265
266config CPU_SUBTYPE_SH7201
267 bool "Support SH7201 processor"
268 select CPU_SH2A
269 select CPU_HAS_FPU
270 select SYS_SUPPORTS_MTU2
271
272config CPU_SUBTYPE_SH7203
273 bool "Support SH7203 processor"
274 select CPU_SH2A
275 select CPU_HAS_FPU
276 select SYS_SUPPORTS_CMT
277 select SYS_SUPPORTS_MTU2
278 select ARCH_WANT_OPTIONAL_GPIOLIB
279
280config CPU_SUBTYPE_SH7206
281 bool "Support SH7206 processor"
282 select CPU_SH2A
283 select SYS_SUPPORTS_CMT
284 select SYS_SUPPORTS_MTU2
285
286config CPU_SUBTYPE_SH7263
287 bool "Support SH7263 processor"
288 select CPU_SH2A
289 select CPU_HAS_FPU
290 select SYS_SUPPORTS_CMT
291 select SYS_SUPPORTS_MTU2
292
293config CPU_SUBTYPE_MXG
294 bool "Support MX-G processor"
295 select CPU_SH2A
296 select SYS_SUPPORTS_MTU2
297 help
298 Select MX-G if running on an R8A03022BG part.
299
300# SH-3 Processor Support
301
302config CPU_SUBTYPE_SH7705
303 bool "Support SH7705 processor"
304 select CPU_SH3
305
306config 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
312config 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
318config 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
325config 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
331config 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
338config 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
345config CPU_SUBTYPE_SH7720
346 bool "Support SH7720 processor"
347 select CPU_SH3
348 select CPU_HAS_DSP
349 select SYS_SUPPORTS_CMT
350 select ARCH_WANT_OPTIONAL_GPIOLIB
351 select USB_ARCH_HAS_OHCI
352 select USB_OHCI_SH if USB_OHCI_HCD
353 help
354 Select SH7720 if you have a SH3-DSP SH7720 CPU.
355
356config CPU_SUBTYPE_SH7721
357 bool "Support SH7721 processor"
358 select CPU_SH3
359 select CPU_HAS_DSP
360 select SYS_SUPPORTS_CMT
361 select USB_ARCH_HAS_OHCI
362 select USB_OHCI_SH if USB_OHCI_HCD
363 help
364 Select SH7721 if you have a SH3-DSP SH7721 CPU.
365
366# SH-4 Processor Support
367
368config CPU_SUBTYPE_SH7750
369 bool "Support SH7750 processor"
370 select CPU_SH4
371 help
372 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
373
374config CPU_SUBTYPE_SH7091
375 bool "Support SH7091 processor"
376 select CPU_SH4
377 help
378 Select SH7091 if you have an SH-4 based Sega device (such as
379 the Dreamcast, Naomi, and Naomi 2).
380
381config CPU_SUBTYPE_SH7750R
382 bool "Support SH7750R processor"
383 select CPU_SH4
384
385config CPU_SUBTYPE_SH7750S
386 bool "Support SH7750S processor"
387 select CPU_SH4
388
389config CPU_SUBTYPE_SH7751
390 bool "Support SH7751 processor"
391 select CPU_SH4
392 help
393 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
394 or if you have a HD6417751R CPU.
395
396config CPU_SUBTYPE_SH7751R
397 bool "Support SH7751R processor"
398 select CPU_SH4
399
400config CPU_SUBTYPE_SH7760
401 bool "Support SH7760 processor"
402 select CPU_SH4
403
404config CPU_SUBTYPE_SH4_202
405 bool "Support SH4-202 processor"
406 select CPU_SH4
407
408# SH-4A Processor Support
409
410config CPU_SUBTYPE_SH7723
411 bool "Support SH7723 processor"
412 select CPU_SH4A
413 select CPU_SHX2
414 select ARCH_SHMOBILE
415 select ARCH_SPARSEMEM_ENABLE
416 select SYS_SUPPORTS_CMT
417 select ARCH_WANT_OPTIONAL_GPIOLIB
418 help
419 Select SH7723 if you have an SH-MobileR2 CPU.
420
421config 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_CMT
428 select ARCH_WANT_OPTIONAL_GPIOLIB
429 help
430 Select SH7724 if you have an SH-MobileR2R CPU.
431
432config CPU_SUBTYPE_SH7757
433 bool "Support SH7757 processor"
434 select CPU_SH4A
435 select CPU_SHX2
436 select ARCH_WANT_OPTIONAL_GPIOLIB
437 select USB_ARCH_HAS_OHCI
438 select USB_ARCH_HAS_EHCI
439 help
440 Select SH7757 if you have a SH4A SH7757 CPU.
441
442config CPU_SUBTYPE_SH7763
443 bool "Support SH7763 processor"
444 select CPU_SH4A
445 select USB_ARCH_HAS_OHCI
446 select USB_OHCI_SH if USB_OHCI_HCD
447 help
448 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
449
450config CPU_SUBTYPE_SH7770
451 bool "Support SH7770 processor"
452 select CPU_SH4A
453
454config CPU_SUBTYPE_SH7780
455 bool "Support SH7780 processor"
456 select CPU_SH4A
457
458config CPU_SUBTYPE_SH7785
459 bool "Support SH7785 processor"
460 select CPU_SH4A
461 select CPU_SHX2
462 select ARCH_SPARSEMEM_ENABLE
463 select SYS_SUPPORTS_NUMA
464 select ARCH_WANT_OPTIONAL_GPIOLIB
465
466config CPU_SUBTYPE_SH7786
467 bool "Support SH7786 processor"
468 select CPU_SH4A
469 select CPU_SHX3
470 select CPU_HAS_PTEAEX
471 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
472 select ARCH_WANT_OPTIONAL_GPIOLIB
473 select USB_ARCH_HAS_OHCI
474 select USB_OHCI_SH if USB_OHCI_HCD
475 select USB_ARCH_HAS_EHCI
476 select USB_EHCI_SH if USB_EHCI_HCD
477
478config CPU_SUBTYPE_SHX3
479 bool "Support SH-X3 processor"
480 select CPU_SH4A
481 select CPU_SHX3
482 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
483 select ARCH_REQUIRE_GPIOLIB
484
485# SH4AL-DSP Processor Support
486
487config CPU_SUBTYPE_SH7343
488 bool "Support SH7343 processor"
489 select CPU_SH4AL_DSP
490 select ARCH_SHMOBILE
491 select SYS_SUPPORTS_CMT
492
493config CPU_SUBTYPE_SH7722
494 bool "Support SH7722 processor"
495 select CPU_SH4AL_DSP
496 select CPU_SHX2
497 select ARCH_SHMOBILE
498 select ARCH_SPARSEMEM_ENABLE
499 select SYS_SUPPORTS_NUMA
500 select SYS_SUPPORTS_CMT
501 select ARCH_WANT_OPTIONAL_GPIOLIB
502
503config CPU_SUBTYPE_SH7366
504 bool "Support SH7366 processor"
505 select CPU_SH4AL_DSP
506 select CPU_SHX2
507 select ARCH_SHMOBILE
508 select ARCH_SPARSEMEM_ENABLE
509 select SYS_SUPPORTS_NUMA
510 select SYS_SUPPORTS_CMT
511
512endchoice
513
514endif
515
516if SUPERH64
517
518choice
519 prompt "Processor sub-type selection"
520
521# SH-5 Processor Support
522
523config CPU_SUBTYPE_SH5_101
524 bool "Support SH5-101 processor"
525 select CPU_SH5
526
527config CPU_SUBTYPE_SH5_103
528 bool "Support SH5-103 processor"
529 select CPU_SH5
530
531endchoice
532
533endif
534
535source "arch/sh/mm/Kconfig"
536
537source "arch/sh/Kconfig.cpu"
538
539source "arch/sh/boards/Kconfig"
540
541menu "Timer and clock configuration"
542
543config SH_TIMER_TMU
544 bool "TMU timer driver"
545 depends on SYS_SUPPORTS_TMU
546 default y
547 help
548 This enables the build of the TMU timer driver.
549
550config SH_TIMER_CMT
551 bool "CMT timer driver"
552 depends on SYS_SUPPORTS_CMT
553 default y
554 help
555 This enables build of the CMT timer driver.
556
557config SH_TIMER_MTU2
558 bool "MTU2 timer driver"
559 depends on SYS_SUPPORTS_MTU2
560 default y
561 help
562 This enables build of the MTU2 timer driver.
563
564config SH_PCLK_FREQ
565 int "Peripheral clock frequency (in Hz)"
566 depends on SH_CLK_CPG_LEGACY
567 default "31250000" if CPU_SUBTYPE_SH7619
568 default "33333333" if CPU_SUBTYPE_SH7770 || \
569 CPU_SUBTYPE_SH7760 || \
570 CPU_SUBTYPE_SH7705 || \
571 CPU_SUBTYPE_SH7203 || \
572 CPU_SUBTYPE_SH7206 || \
573 CPU_SUBTYPE_SH7263 || \
574 CPU_SUBTYPE_MXG
575 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
576 default "66000000" if CPU_SUBTYPE_SH4_202
577 default "50000000"
578 help
579 This option is used to specify the peripheral clock frequency.
580 This is necessary for determining the reference clock value on
581 platforms lacking an RTC.
582
583config SH_CLK_CPG
584 def_bool y
585
586config SH_CLK_CPG_LEGACY
587 depends on SH_CLK_CPG
588 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
589 !CPU_SHX3 && !CPU_SUBTYPE_SH7757
590
591source "kernel/time/Kconfig"
592
593endmenu
594
595menu "CPU Frequency scaling"
596
597source "drivers/cpufreq/Kconfig"
598
599config SH_CPU_FREQ
600 tristate "SuperH CPU Frequency driver"
601 depends on CPU_FREQ
602 select CPU_FREQ_TABLE
603 help
604 This adds the cpufreq driver for SuperH. Any CPU that supports
605 clock rate rounding through the clock framework can use this
606 driver. While it will make the kernel slightly larger, this is
607 harmless for CPUs that don't support rate rounding. The driver
608 will also generate a notice in the boot log before disabling
609 itself if the CPU in question is not capable of rate rounding.
610
611 For details, take a look at <file:Documentation/cpu-freq>.
612
613 If unsure, say N.
614
615endmenu
616
617source "arch/sh/drivers/Kconfig"
618
619endmenu
620
621menu "Kernel features"
622
623source kernel/Kconfig.hz
624
625config KEXEC
626 bool "kexec system call (EXPERIMENTAL)"
627 depends on SUPERH32 && EXPERIMENTAL && MMU
628 help
629 kexec is a system call that implements the ability to shutdown your
630 current kernel, and to start another kernel. It is like a reboot
631 but it is independent of the system firmware. And like a reboot
632 you can start any kernel with it, not just Linux.
633
634 The name comes from the similarity to the exec system call.
635
636 It is an ongoing process to be certain the hardware in a machine
637 is properly shutdown, so do not be surprised if this code does not
638 initially work for you. It may help to enable device hotplugging
639 support. As of this writing the exact hardware interface is
640 strongly in flux, so no good recommendation can be made.
641
642config CRASH_DUMP
643 bool "kernel crash dumps (EXPERIMENTAL)"
644 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
645 help
646 Generate crash dump after being started by kexec.
647 This should be normally only set in special crash dump kernels
648 which are loaded in the main kernel with kexec-tools into
649 a specially reserved region and then later executed after
650 a crash by kdump/kexec. The crash dump kernel must be compiled
651 to a memory address not used by the main kernel using
652 MEMORY_START.
653
654 For more details see Documentation/kdump/kdump.txt
655
656config KEXEC_JUMP
657 bool "kexec jump (EXPERIMENTAL)"
658 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
659 help
660 Jump between original kernel and kexeced kernel and invoke
661 code via KEXEC
662
663config SECCOMP
664 bool "Enable seccomp to safely compute untrusted bytecode"
665 depends on PROC_FS
666 help
667 This kernel feature is useful for number crunching applications
668 that may need to compute untrusted bytecode during their
669 execution. By using pipes or other transports made available to
670 the process as file descriptors supporting the read/write
671 syscalls, it's possible to isolate those applications in
672 their own address space using seccomp. Once seccomp is
673 enabled via prctl, it cannot be disabled and the task is only
674 allowed to execute a few safe syscalls defined by each seccomp
675 mode.
676
677 If unsure, say N.
678
679config SMP
680 bool "Symmetric multi-processing support"
681 depends on SYS_SUPPORTS_SMP
682 select USE_GENERIC_SMP_HELPERS
683 ---help---
684 This enables support for systems with more than one CPU. If you have
685 a system with only one CPU, like most personal computers, say N. If
686 you have a system with more than one CPU, say Y.
687
688 If you say N here, the kernel will run on single and multiprocessor
689 machines, but will use only one CPU of a multiprocessor machine. If
690 you say Y here, the kernel will run on many, but not all,
691 singleprocessor machines. On a singleprocessor machine, the kernel
692 will run faster if you say N here.
693
694 People using multiprocessor machines who say Y here should also say
695 Y to "Enhanced Real Time Clock Support", below.
696
697 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
698 available at <http://www.tldp.org/docs.html#howto>.
699
700 If you don't know what to do here, say N.
701
702config NR_CPUS
703 int "Maximum number of CPUs (2-32)"
704 range 2 32
705 depends on SMP
706 default "4" if CPU_SUBTYPE_SHX3
707 default "2"
708 help
709 This allows you to specify the maximum number of CPUs which this
710 kernel will support. The maximum supported value is 32 and the
711 minimum value which makes sense is 2.
712
713 This is purely to save memory - each supported CPU adds
714 approximately eight kilobytes to the kernel image.
715
716config HOTPLUG_CPU
717 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
718 depends on SMP && HOTPLUG && EXPERIMENTAL
719 help
720 Say Y here to experiment with turning CPUs off and on. CPUs
721 can be controlled through /sys/devices/system/cpu.
722
723source "kernel/Kconfig.preempt"
724
725config GUSA
726 def_bool y
727 depends on !SMP && SUPERH32
728 help
729 This enables support for gUSA (general UserSpace Atomicity).
730 This is the default implementation for both UP and non-ll/sc
731 CPUs, and is used by the libc, amongst others.
732
733 For additional information, design information can be found
734 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
735
736 This should only be disabled for special cases where alternate
737 atomicity implementations exist.
738
739config GUSA_RB
740 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
741 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
742 help
743 Enabling this option will allow the kernel to implement some
744 atomic operations using a software implementation of load-locked/
745 store-conditional (LLSC). On machines which do not have hardware
746 LLSC, this should be more efficient than the other alternative of
747 disabling interrupts around the atomic sequence.
748
749config HW_PERF_EVENTS
750 bool "Enable hardware performance counter support for perf events"
751 depends on PERF_EVENTS && CPU_HAS_PMU
752 default y
753 help
754 Enable hardware performance counter support for perf events. If
755 disabled, perf events will use software events only.
756
757source "drivers/sh/Kconfig"
758
759endmenu
760
761menu "Boot options"
762
763config ZERO_PAGE_OFFSET
764 hex
765 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
766 SH_7751_SOLUTION_ENGINE
767 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
768 default "0x00002000" if PAGE_SIZE_8KB
769 default "0x00001000"
770 help
771 This sets the default offset of zero page.
772
773config BOOT_LINK_OFFSET
774 hex
775 default "0x00210000" if SH_SHMIN
776 default "0x00400000" if SH_CAYMAN
777 default "0x00810000" if SH_7780_SOLUTION_ENGINE
778 default "0x009e0000" if SH_TITAN
779 default "0x01800000" if SH_SDK7780
780 default "0x02000000" if SH_EDOSK7760
781 default "0x00800000"
782 help
783 This option allows you to set the link address offset of the zImage.
784 This can be useful if you are on a board which has a small amount of
785 memory.
786
787config ENTRY_OFFSET
788 hex
789 default "0x00001000" if PAGE_SIZE_4KB
790 default "0x00002000" if PAGE_SIZE_8KB
791 default "0x00004000" if PAGE_SIZE_16KB
792 default "0x00010000" if PAGE_SIZE_64KB
793 default "0x00000000"
794
795config ROMIMAGE_MMCIF
796 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
797 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
798 help
799 Say Y here to include experimental MMCIF loading code in
800 romImage. With this enabled it is possible to write the romImage
801 kernel image to an MMC card and boot the kernel straight from
802 the reset vector. At reset the processor Mask ROM will load the
803 first part of the romImage which in turn loads the rest the kernel
804 image to RAM using the MMCIF hardware block.
805
806choice
807 prompt "Kernel command line"
808 optional
809 default CMDLINE_OVERWRITE
810 help
811 Setting this option allows the kernel command line arguments
812 to be set.
813
814config CMDLINE_OVERWRITE
815 bool "Overwrite bootloader kernel arguments"
816 help
817 Given string will overwrite any arguments passed in by
818 a bootloader.
819
820config CMDLINE_EXTEND
821 bool "Extend bootloader kernel arguments"
822 help
823 Given string will be concatenated with arguments passed in
824 by a bootloader.
825
826endchoice
827
828config CMDLINE
829 string "Kernel command line arguments string"
830 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
831 default "console=ttySC1,115200"
832
833endmenu
834
835menu "Bus options"
836
837config SUPERHYWAY
838 tristate "SuperHyway Bus support"
839 depends on CPU_SUBTYPE_SH4_202
840
841config MAPLE
842 bool "Maple Bus support"
843 depends on SH_DREAMCAST
844 help
845 The Maple Bus is SEGA's serial communication bus for peripherals
846 on the Dreamcast. Without this bus support you won't be able to
847 get your Dreamcast keyboard etc to work, so most users
848 probably want to say 'Y' here, unless you are only using the
849 Dreamcast with a serial line terminal or a remote network
850 connection.
851
852config PCI
853 bool "PCI support"
854 depends on SYS_SUPPORTS_PCI
855 select PCI_DOMAINS
856 help
857 Find out whether you have a PCI motherboard. PCI is the name of a
858 bus system, i.e. the way the CPU talks to the other stuff inside
859 your box. If you have PCI, say Y, otherwise N.
860
861config PCI_DOMAINS
862 bool
863
864source "drivers/pci/pcie/Kconfig"
865
866source "drivers/pci/Kconfig"
867
868source "drivers/pcmcia/Kconfig"
869
870source "drivers/pci/hotplug/Kconfig"
871
872endmenu
873
874menu "Executable file formats"
875
876source "fs/Kconfig.binfmt"
877
878endmenu
879
880menu "Power management options (EXPERIMENTAL)"
881depends on EXPERIMENTAL
882
883source "kernel/power/Kconfig"
884
885source "drivers/cpuidle/Kconfig"
886
887endmenu
888
889source "net/Kconfig"
890
891source "drivers/Kconfig"
892
893source "fs/Kconfig"
894
895source "arch/sh/Kconfig.debug"
896
897source "security/Kconfig"
898
899source "crypto/Kconfig"
900
901source "lib/Kconfig"