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_MEMBLOCK_NODE_MAP
8 select ARCH_DISCARD_MEMBLOCK
9 select HAVE_OPROFILE
10 select HAVE_GENERIC_DMA_COHERENT
11 select HAVE_ARCH_TRACEHOOK
12 select HAVE_DMA_API_DEBUG
13 select HAVE_DMA_ATTRS
14 select HAVE_PERF_EVENTS
15 select HAVE_DEBUG_BUGVERBOSE
16 select ARCH_HAVE_CUSTOM_GPIO_H
17 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
18 select PERF_USE_VMALLOC
19 select HAVE_DEBUG_KMEMLEAK
20 select HAVE_KERNEL_GZIP
21 select HAVE_KERNEL_BZIP2
22 select HAVE_KERNEL_LZMA
23 select HAVE_KERNEL_XZ
24 select HAVE_KERNEL_LZO
25 select HAVE_UID16
26 select ARCH_WANT_IPC_PARSE_VERSION
27 select HAVE_SYSCALL_TRACEPOINTS
28 select HAVE_REGS_AND_STACK_ACCESS_API
29 select HAVE_GENERIC_HARDIRQS
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 help
46 The SuperH is a RISC processor targeted for use in embedded systems
47 and consumer electronics; it was also used in the Sega Dreamcast
48 gaming console. The SuperH port has a home page at
49 <http://www.linux-sh.org/>.
50
51config SUPERH32
52 def_bool ARCH = "sh"
53 select HAVE_KPROBES
54 select HAVE_KRETPROBES
55 select HAVE_IOREMAP_PROT if MMU && !X2TLB
56 select HAVE_FUNCTION_TRACER
57 select HAVE_FTRACE_MCOUNT_RECORD
58 select HAVE_DYNAMIC_FTRACE
59 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
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
70config SUPERH64
71 def_bool ARCH = "sh64"
72 select KALLSYMS
73
74config ARCH_DEFCONFIG
75 string
76 default "arch/sh/configs/shx3_defconfig" if SUPERH32
77 default "arch/sh/configs/cayman_defconfig" if SUPERH64
78
79config RWSEM_GENERIC_SPINLOCK
80 def_bool y
81
82config RWSEM_XCHGADD_ALGORITHM
83 bool
84
85config GENERIC_BUG
86 def_bool y
87 depends on BUG && SUPERH32
88
89config GENERIC_CSUM
90 def_bool y
91 depends on SUPERH64
92
93config GENERIC_HWEIGHT
94 def_bool y
95
96config GENERIC_CALIBRATE_DELAY
97 bool
98
99config GENERIC_LOCKBREAK
100 def_bool y
101 depends on SMP && PREEMPT
102
103config ARCH_SUSPEND_POSSIBLE
104 def_bool n
105
106config ARCH_HIBERNATION_POSSIBLE
107 def_bool n
108
109config SYS_SUPPORTS_APM_EMULATION
110 bool
111 select ARCH_SUSPEND_POSSIBLE
112
113config SYS_SUPPORTS_HUGETLBFS
114 bool
115
116config SYS_SUPPORTS_SMP
117 bool
118
119config SYS_SUPPORTS_NUMA
120 bool
121
122config SYS_SUPPORTS_PCI
123 bool
124
125config SYS_SUPPORTS_CMT
126 bool
127
128config SYS_SUPPORTS_MTU2
129 bool
130
131config SYS_SUPPORTS_TMU
132 bool
133
134config STACKTRACE_SUPPORT
135 def_bool y
136
137config LOCKDEP_SUPPORT
138 def_bool y
139
140config HAVE_LATENCYTOP_SUPPORT
141 def_bool y
142
143config ARCH_HAS_ILOG2_U32
144 def_bool n
145
146config ARCH_HAS_ILOG2_U64
147 def_bool n
148
149config NO_IOPORT
150 def_bool !PCI
151 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
152 !SH_HP6XX && !SH_SOLUTION_ENGINE
153
154config IO_TRAPPED
155 bool
156
157config SWAP_IO_SPACE
158 bool
159
160config DMA_COHERENT
161 bool
162
163config DMA_NONCOHERENT
164 def_bool !DMA_COHERENT
165
166config NEED_DMA_MAP_STATE
167 def_bool DMA_NONCOHERENT
168
169config NEED_SG_DMA_LENGTH
170 def_bool y
171
172source "init/Kconfig"
173
174source "kernel/Kconfig.freezer"
175
176menu "System type"
177
178
179
180
181config CPU_SH2
182 bool
183
184config CPU_SH2A
185 bool
186 select CPU_SH2
187 select UNCACHED_MAPPING
188
189config CPU_SH3
190 bool
191 select CPU_HAS_INTEVT
192 select CPU_HAS_SR_RB
193 select SYS_SUPPORTS_TMU
194
195config CPU_SH4
196 bool
197 select CPU_HAS_INTEVT
198 select CPU_HAS_SR_RB
199 select CPU_HAS_FPU if !CPU_SH4AL_DSP
200 select SYS_SUPPORTS_TMU
201 select SYS_SUPPORTS_HUGETLBFS if MMU
202
203config CPU_SH4A
204 bool
205 select CPU_SH4
206
207config CPU_SH4AL_DSP
208 bool
209 select CPU_SH4A
210 select CPU_HAS_DSP
211
212config CPU_SH5
213 bool
214 select CPU_HAS_FPU
215 select SYS_SUPPORTS_TMU
216 select SYS_SUPPORTS_HUGETLBFS if MMU
217
218config CPU_SHX2
219 bool
220
221config CPU_SHX3
222 bool
223 select DMA_COHERENT
224 select SYS_SUPPORTS_SMP
225 select SYS_SUPPORTS_NUMA
226
227config ARCH_SHMOBILE
228 bool
229 select ARCH_SUSPEND_POSSIBLE
230 select PM
231 select PM_RUNTIME
232
233config CPU_HAS_PMU
234 depends on CPU_SH4 || CPU_SH4A
235 default y
236 bool
237
238if SUPERH32
239
240choice
241 prompt "Processor sub-type selection"
242
243
244
245
246
247
248
249config CPU_SUBTYPE_SH7619
250 bool "Support SH7619 processor"
251 select CPU_SH2
252 select SYS_SUPPORTS_CMT
253
254
255
256config CPU_SUBTYPE_SH7201
257 bool "Support SH7201 processor"
258 select CPU_SH2A
259 select CPU_HAS_FPU
260 select SYS_SUPPORTS_MTU2
261
262config CPU_SUBTYPE_SH7203
263 bool "Support SH7203 processor"
264 select CPU_SH2A
265 select CPU_HAS_FPU
266 select SYS_SUPPORTS_CMT
267 select SYS_SUPPORTS_MTU2
268 select ARCH_WANT_OPTIONAL_GPIOLIB
269 select PINCTRL
270
271config CPU_SUBTYPE_SH7206
272 bool "Support SH7206 processor"
273 select CPU_SH2A
274 select SYS_SUPPORTS_CMT
275 select SYS_SUPPORTS_MTU2
276
277config CPU_SUBTYPE_SH7263
278 bool "Support SH7263 processor"
279 select CPU_SH2A
280 select CPU_HAS_FPU
281 select SYS_SUPPORTS_CMT
282 select SYS_SUPPORTS_MTU2
283
284config CPU_SUBTYPE_SH7264
285 bool "Support SH7264 processor"
286 select CPU_SH2A
287 select CPU_HAS_FPU
288 select SYS_SUPPORTS_CMT
289 select SYS_SUPPORTS_MTU2
290 select PINCTRL
291
292config CPU_SUBTYPE_SH7269
293 bool "Support SH7269 processor"
294 select CPU_SH2A
295 select CPU_HAS_FPU
296 select SYS_SUPPORTS_CMT
297 select SYS_SUPPORTS_MTU2
298 select PINCTRL
299
300config CPU_SUBTYPE_MXG
301 bool "Support MX-G processor"
302 select CPU_SH2A
303 select SYS_SUPPORTS_MTU2
304 help
305 Select MX-G if running on an R8A03022BG part.
306
307
308
309config CPU_SUBTYPE_SH7705
310 bool "Support SH7705 processor"
311 select CPU_SH3
312
313config CPU_SUBTYPE_SH7706
314 bool "Support SH7706 processor"
315 select CPU_SH3
316 help
317 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
318
319config CPU_SUBTYPE_SH7707
320 bool "Support SH7707 processor"
321 select CPU_SH3
322 help
323 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
324
325config CPU_SUBTYPE_SH7708
326 bool "Support SH7708 processor"
327 select CPU_SH3
328 help
329 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
330 if you have a 100 Mhz SH-3 HD6417708R CPU.
331
332config CPU_SUBTYPE_SH7709
333 bool "Support SH7709 processor"
334 select CPU_SH3
335 help
336 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
337
338config CPU_SUBTYPE_SH7710
339 bool "Support SH7710 processor"
340 select CPU_SH3
341 select CPU_HAS_DSP
342 help
343 Select SH7710 if you have a SH3-DSP SH7710 CPU.
344
345config CPU_SUBTYPE_SH7712
346 bool "Support SH7712 processor"
347 select CPU_SH3
348 select CPU_HAS_DSP
349 help
350 Select SH7712 if you have a SH3-DSP SH7712 CPU.
351
352config CPU_SUBTYPE_SH7720
353 bool "Support SH7720 processor"
354 select CPU_SH3
355 select CPU_HAS_DSP
356 select SYS_SUPPORTS_CMT
357 select ARCH_WANT_OPTIONAL_GPIOLIB
358 select USB_ARCH_HAS_OHCI
359 select USB_OHCI_SH if USB_OHCI_HCD
360 select PINCTRL
361 help
362 Select SH7720 if you have a SH3-DSP SH7720 CPU.
363
364config CPU_SUBTYPE_SH7721
365 bool "Support SH7721 processor"
366 select CPU_SH3
367 select CPU_HAS_DSP
368 select SYS_SUPPORTS_CMT
369 select USB_ARCH_HAS_OHCI
370 select USB_OHCI_SH if USB_OHCI_HCD
371 help
372 Select SH7721 if you have a SH3-DSP SH7721 CPU.
373
374
375
376config CPU_SUBTYPE_SH7750
377 bool "Support SH7750 processor"
378 select CPU_SH4
379 help
380 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
381
382config CPU_SUBTYPE_SH7091
383 bool "Support SH7091 processor"
384 select CPU_SH4
385 help
386 Select SH7091 if you have an SH-4 based Sega device (such as
387 the Dreamcast, Naomi, and Naomi 2).
388
389config CPU_SUBTYPE_SH7750R
390 bool "Support SH7750R processor"
391 select CPU_SH4
392
393config CPU_SUBTYPE_SH7750S
394 bool "Support SH7750S processor"
395 select CPU_SH4
396
397config CPU_SUBTYPE_SH7751
398 bool "Support SH7751 processor"
399 select CPU_SH4
400 help
401 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
402 or if you have a HD6417751R CPU.
403
404config CPU_SUBTYPE_SH7751R
405 bool "Support SH7751R processor"
406 select CPU_SH4
407
408config CPU_SUBTYPE_SH7760
409 bool "Support SH7760 processor"
410 select CPU_SH4
411
412config CPU_SUBTYPE_SH4_202
413 bool "Support SH4-202 processor"
414 select CPU_SH4
415
416
417
418config CPU_SUBTYPE_SH7723
419 bool "Support SH7723 processor"
420 select CPU_SH4A
421 select CPU_SHX2
422 select ARCH_SHMOBILE
423 select ARCH_SPARSEMEM_ENABLE
424 select SYS_SUPPORTS_CMT
425 select ARCH_WANT_OPTIONAL_GPIOLIB
426 select PINCTRL
427 help
428 Select SH7723 if you have an SH-MobileR2 CPU.
429
430config CPU_SUBTYPE_SH7724
431 bool "Support SH7724 processor"
432 select CPU_SH4A
433 select CPU_SHX2
434 select ARCH_SHMOBILE
435 select ARCH_SPARSEMEM_ENABLE
436 select SYS_SUPPORTS_CMT
437 select ARCH_WANT_OPTIONAL_GPIOLIB
438 select PINCTRL
439 help
440 Select SH7724 if you have an SH-MobileR2R CPU.
441
442config CPU_SUBTYPE_SH7734
443 bool "Support SH7734 processor"
444 select CPU_SH4A
445 select CPU_SHX2
446 select ARCH_WANT_OPTIONAL_GPIOLIB
447 select USB_ARCH_HAS_OHCI
448 select USB_ARCH_HAS_EHCI
449 select PINCTRL
450 help
451 Select SH7734 if you have a SH4A SH7734 CPU.
452
453config CPU_SUBTYPE_SH7757
454 bool "Support SH7757 processor"
455 select CPU_SH4A
456 select CPU_SHX2
457 select ARCH_WANT_OPTIONAL_GPIOLIB
458 select USB_ARCH_HAS_OHCI
459 select USB_ARCH_HAS_EHCI
460 select PINCTRL
461 help
462 Select SH7757 if you have a SH4A SH7757 CPU.
463
464config CPU_SUBTYPE_SH7763
465 bool "Support SH7763 processor"
466 select CPU_SH4A
467 select USB_ARCH_HAS_OHCI
468 select USB_OHCI_SH if USB_OHCI_HCD
469 help
470 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
471
472config CPU_SUBTYPE_SH7770
473 bool "Support SH7770 processor"
474 select CPU_SH4A
475
476config CPU_SUBTYPE_SH7780
477 bool "Support SH7780 processor"
478 select CPU_SH4A
479
480config CPU_SUBTYPE_SH7785
481 bool "Support SH7785 processor"
482 select CPU_SH4A
483 select CPU_SHX2
484 select ARCH_SPARSEMEM_ENABLE
485 select SYS_SUPPORTS_NUMA
486 select ARCH_WANT_OPTIONAL_GPIOLIB
487 select PINCTRL
488
489config CPU_SUBTYPE_SH7786
490 bool "Support SH7786 processor"
491 select CPU_SH4A
492 select CPU_SHX3
493 select CPU_HAS_PTEAEX
494 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
495 select ARCH_WANT_OPTIONAL_GPIOLIB
496 select USB_ARCH_HAS_OHCI
497 select USB_OHCI_SH if USB_OHCI_HCD
498 select USB_ARCH_HAS_EHCI
499 select USB_EHCI_SH if USB_EHCI_HCD
500 select PINCTRL
501
502config CPU_SUBTYPE_SHX3
503 bool "Support SH-X3 processor"
504 select CPU_SH4A
505 select CPU_SHX3
506 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
507 select ARCH_REQUIRE_GPIOLIB
508 select PINCTRL
509
510
511
512config CPU_SUBTYPE_SH7343
513 bool "Support SH7343 processor"
514 select CPU_SH4AL_DSP
515 select ARCH_SHMOBILE
516 select SYS_SUPPORTS_CMT
517
518config CPU_SUBTYPE_SH7722
519 bool "Support SH7722 processor"
520 select CPU_SH4AL_DSP
521 select CPU_SHX2
522 select ARCH_SHMOBILE
523 select ARCH_SPARSEMEM_ENABLE
524 select SYS_SUPPORTS_NUMA
525 select SYS_SUPPORTS_CMT
526 select ARCH_WANT_OPTIONAL_GPIOLIB
527 select PINCTRL
528
529config CPU_SUBTYPE_SH7366
530 bool "Support SH7366 processor"
531 select CPU_SH4AL_DSP
532 select CPU_SHX2
533 select ARCH_SHMOBILE
534 select ARCH_SPARSEMEM_ENABLE
535 select SYS_SUPPORTS_NUMA
536 select SYS_SUPPORTS_CMT
537
538endchoice
539
540endif
541
542if SUPERH64
543
544choice
545 prompt "Processor sub-type selection"
546
547
548
549config CPU_SUBTYPE_SH5_101
550 bool "Support SH5-101 processor"
551 select CPU_SH5
552
553config CPU_SUBTYPE_SH5_103
554 bool "Support SH5-103 processor"
555 select CPU_SH5
556
557endchoice
558
559endif
560
561source "arch/sh/mm/Kconfig"
562
563source "arch/sh/Kconfig.cpu"
564
565source "arch/sh/boards/Kconfig"
566
567menu "Timer and clock configuration"
568
569config SH_TIMER_TMU
570 bool "TMU timer driver"
571 depends on SYS_SUPPORTS_TMU
572 default y
573 help
574 This enables the build of the TMU timer driver.
575
576config SH_TIMER_CMT
577 bool "CMT timer driver"
578 depends on SYS_SUPPORTS_CMT
579 default y
580 help
581 This enables build of the CMT timer driver.
582
583config SH_TIMER_MTU2
584 bool "MTU2 timer driver"
585 depends on SYS_SUPPORTS_MTU2
586 default y
587 help
588 This enables build of the MTU2 timer driver.
589
590config SH_PCLK_FREQ
591 int "Peripheral clock frequency (in Hz)"
592 depends on SH_CLK_CPG_LEGACY
593 default "31250000" if CPU_SUBTYPE_SH7619
594 default "33333333" if CPU_SUBTYPE_SH7770 || \
595 CPU_SUBTYPE_SH7760 || \
596 CPU_SUBTYPE_SH7705 || \
597 CPU_SUBTYPE_SH7203 || \
598 CPU_SUBTYPE_SH7206 || \
599 CPU_SUBTYPE_SH7263 || \
600 CPU_SUBTYPE_MXG
601 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
602 default "66000000" if CPU_SUBTYPE_SH4_202
603 default "50000000"
604 help
605 This option is used to specify the peripheral clock frequency.
606 This is necessary for determining the reference clock value on
607 platforms lacking an RTC.
608
609config SH_CLK_CPG
610 def_bool y
611
612config SH_CLK_CPG_LEGACY
613 depends on SH_CLK_CPG
614 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
615 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
616 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
617 !CPU_SUBTYPE_SH7269
618
619endmenu
620
621menu "CPU Frequency scaling"
622source "drivers/cpufreq/Kconfig"
623endmenu
624
625source "arch/sh/drivers/Kconfig"
626
627endmenu
628
629menu "Kernel features"
630
631source kernel/Kconfig.hz
632
633config KEXEC
634 bool "kexec system call (EXPERIMENTAL)"
635 depends on SUPERH32 && MMU
636 help
637 kexec is a system call that implements the ability to shutdown your
638 current kernel, and to start another kernel. It is like a reboot
639 but it is independent of the system firmware. And like a reboot
640 you can start any kernel with it, not just Linux.
641
642 The name comes from the similarity to the exec system call.
643
644 It is an ongoing process to be certain the hardware in a machine
645 is properly shutdown, so do not be surprised if this code does not
646 initially work for you. It may help to enable device hotplugging
647 support. As of this writing the exact hardware interface is
648 strongly in flux, so no good recommendation can be made.
649
650config CRASH_DUMP
651 bool "kernel crash dumps (EXPERIMENTAL)"
652 depends on SUPERH32 && BROKEN_ON_SMP
653 help
654 Generate crash dump after being started by kexec.
655 This should be normally only set in special crash dump kernels
656 which are loaded in the main kernel with kexec-tools into
657 a specially reserved region and then later executed after
658 a crash by kdump/kexec. The crash dump kernel must be compiled
659 to a memory address not used by the main kernel using
660 PHYSICAL_START.
661
662 For more details see Documentation/kdump/kdump.txt
663
664config KEXEC_JUMP
665 bool "kexec jump (EXPERIMENTAL)"
666 depends on SUPERH32 && KEXEC && HIBERNATION
667 help
668 Jump between original kernel and kexeced kernel and invoke
669 code via KEXEC
670
671config PHYSICAL_START
672 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
673 default MEMORY_START
674 ---help---
675 This gives the physical address where the kernel is loaded
676 and is ordinarily the same as MEMORY_START.
677
678 Different values are primarily used in the case of kexec on panic
679 where the fail safe kernel needs to run at a different address
680 than the panic-ed kernel.
681
682config SECCOMP
683 bool "Enable seccomp to safely compute untrusted bytecode"
684 depends on PROC_FS
685 help
686 This kernel feature is useful for number crunching applications
687 that may need to compute untrusted bytecode during their
688 execution. By using pipes or other transports made available to
689 the process as file descriptors supporting the read/write
690 syscalls, it's possible to isolate those applications in
691 their own address space using seccomp. Once seccomp is
692 enabled via prctl, it cannot be disabled and the task is only
693 allowed to execute a few safe syscalls defined by each seccomp
694 mode.
695
696 If unsure, say N.
697
698config CC_STACKPROTECTOR
699 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
700 depends on SUPERH32
701 help
702 This option turns on the -fstack-protector GCC feature. This
703 feature puts, at the beginning of functions, a canary value on
704 the stack just before the return address, and validates
705 the value just before actually returning. Stack based buffer
706 overflows (that need to overwrite this return address) now also
707 overwrite the canary, which gets detected and the attack is then
708 neutralized via a kernel panic.
709
710 This feature requires gcc version 4.2 or above.
711
712config SMP
713 bool "Symmetric multi-processing support"
714 depends on SYS_SUPPORTS_SMP
715 select USE_GENERIC_SMP_HELPERS
716 ---help---
717 This enables support for systems with more than one CPU. If you have
718 a system with only one CPU, like most personal computers, say N. If
719 you have a system with more than one CPU, say Y.
720
721 If you say N here, the kernel will run on single and multiprocessor
722 machines, but will use only one CPU of a multiprocessor machine. If
723 you say Y here, the kernel will run on many, but not all,
724 singleprocessor machines. On a singleprocessor machine, the kernel
725 will run faster if you say N here.
726
727 People using multiprocessor machines who say Y here should also say
728 Y to "Enhanced Real Time Clock Support", below.
729
730 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
731 available at <http://www.tldp.org/docs.html
732
733 If you don't know what to do here, say N.
734
735config NR_CPUS
736 int "Maximum number of CPUs (2-32)"
737 range 2 32
738 depends on SMP
739 default "4" if CPU_SUBTYPE_SHX3
740 default "2"
741 help
742 This allows you to specify the maximum number of CPUs which this
743 kernel will support. The maximum supported value is 32 and the
744 minimum value which makes sense is 2.
745
746 This is purely to save memory - each supported CPU adds
747 approximately eight kilobytes to the kernel image.
748
749config HOTPLUG_CPU
750 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
751 depends on SMP
752 help
753 Say Y here to experiment with turning CPUs off and on. CPUs
754 can be controlled through /sys/devices/system/cpu.
755
756source "kernel/Kconfig.preempt"
757
758config GUSA
759 def_bool y
760 depends on !SMP && SUPERH32
761 help
762 This enables support for gUSA (general UserSpace Atomicity).
763 This is the default implementation for both UP and non-ll/sc
764 CPUs, and is used by the libc, amongst others.
765
766 For additional information, design information can be found
767 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
768
769 This should only be disabled for special cases where alternate
770 atomicity implementations exist.
771
772config GUSA_RB
773 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
774 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
775 help
776 Enabling this option will allow the kernel to implement some
777 atomic operations using a software implementation of load-locked/
778 store-conditional (LLSC). On machines which do not have hardware
779 LLSC, this should be more efficient than the other alternative of
780 disabling interrupts around the atomic sequence.
781
782config HW_PERF_EVENTS
783 bool "Enable hardware performance counter support for perf events"
784 depends on PERF_EVENTS && CPU_HAS_PMU
785 default y
786 help
787 Enable hardware performance counter support for perf events. If
788 disabled, perf events will use software events only.
789
790source "drivers/sh/Kconfig"
791
792endmenu
793
794menu "Boot options"
795
796config ZERO_PAGE_OFFSET
797 hex
798 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
799 SH_7751_SOLUTION_ENGINE
800 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
801 default "0x00002000" if PAGE_SIZE_8KB
802 default "0x00001000"
803 help
804 This sets the default offset of zero page.
805
806config BOOT_LINK_OFFSET
807 hex
808 default "0x00210000" if SH_SHMIN
809 default "0x00400000" if SH_CAYMAN
810 default "0x00810000" if SH_7780_SOLUTION_ENGINE
811 default "0x009e0000" if SH_TITAN
812 default "0x01800000" if SH_SDK7780
813 default "0x02000000" if SH_EDOSK7760
814 default "0x00800000"
815 help
816 This option allows you to set the link address offset of the zImage.
817 This can be useful if you are on a board which has a small amount of
818 memory.
819
820config ENTRY_OFFSET
821 hex
822 default "0x00001000" if PAGE_SIZE_4KB
823 default "0x00002000" if PAGE_SIZE_8KB
824 default "0x00004000" if PAGE_SIZE_16KB
825 default "0x00010000" if PAGE_SIZE_64KB
826 default "0x00000000"
827
828config ROMIMAGE_MMCIF
829 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
830 depends on CPU_SUBTYPE_SH7724
831 help
832 Say Y here to include experimental MMCIF loading code in
833 romImage. With this enabled it is possible to write the romImage
834 kernel image to an MMC card and boot the kernel straight from
835 the reset vector. At reset the processor Mask ROM will load the
836 first part of the romImage which in turn loads the rest the kernel
837 image to RAM using the MMCIF hardware block.
838
839choice
840 prompt "Kernel command line"
841 optional
842 default CMDLINE_OVERWRITE
843 help
844 Setting this option allows the kernel command line arguments
845 to be set.
846
847config CMDLINE_OVERWRITE
848 bool "Overwrite bootloader kernel arguments"
849 help
850 Given string will overwrite any arguments passed in by
851 a bootloader.
852
853config CMDLINE_EXTEND
854 bool "Extend bootloader kernel arguments"
855 help
856 Given string will be concatenated with arguments passed in
857 by a bootloader.
858
859endchoice
860
861config CMDLINE
862 string "Kernel command line arguments string"
863 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
864 default "console=ttySC1,115200"
865
866endmenu
867
868menu "Bus options"
869
870config SUPERHYWAY
871 tristate "SuperHyway Bus support"
872 depends on CPU_SUBTYPE_SH4_202
873
874config MAPLE
875 bool "Maple Bus support"
876 depends on SH_DREAMCAST
877 help
878 The Maple Bus is SEGA's serial communication bus for peripherals
879 on the Dreamcast. Without this bus support you won't be able to
880 get your Dreamcast keyboard etc to work, so most users
881 probably want to say 'Y' here, unless you are only using the
882 Dreamcast with a serial line terminal or a remote network
883 connection.
884
885config PCI
886 bool "PCI support"
887 depends on SYS_SUPPORTS_PCI
888 select PCI_DOMAINS
889 select GENERIC_PCI_IOMAP
890 select NO_GENERIC_PCI_IOPORT_MAP
891 help
892 Find out whether you have a PCI motherboard. PCI is the name of a
893 bus system, i.e. the way the CPU talks to the other stuff inside
894 your box. If you have PCI, say Y, otherwise N.
895
896config PCI_DOMAINS
897 bool
898
899source "drivers/pci/pcie/Kconfig"
900
901source "drivers/pci/Kconfig"
902
903source "drivers/pcmcia/Kconfig"
904
905source "drivers/pci/hotplug/Kconfig"
906
907endmenu
908
909menu "Executable file formats"
910
911source "fs/Kconfig.binfmt"
912
913endmenu
914
915menu "Power management options (EXPERIMENTAL)"
916
917source "kernel/power/Kconfig"
918
919source "drivers/cpuidle/Kconfig"
920
921endmenu
922
923source "net/Kconfig"
924
925source "drivers/Kconfig"
926
927source "fs/Kconfig"
928
929source "arch/sh/Kconfig.debug"
930
931source "security/Kconfig"
932
933source "crypto/Kconfig"
934
935source "lib/Kconfig"
936
