1
2config SUPERH
3 def_bool y
4 select ARCH_HAS_PTE_SPECIAL
5 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
6 select ARCH_MIGHT_HAVE_PC_PARPORT
7 select ARCH_NO_COHERENT_DMA_MMAP if !MMU
8 select HAVE_PATA_PLATFORM
9 select CLKDEV_LOOKUP
10 select DMA_DECLARE_COHERENT
11 select HAVE_IDE if HAS_IOPORT_MAP
12 select HAVE_MEMBLOCK_NODE_MAP
13 select ARCH_DISCARD_MEMBLOCK
14 select HAVE_OPROFILE
15 select HAVE_ARCH_TRACEHOOK
16 select HAVE_PERF_EVENTS
17 select HAVE_DEBUG_BUGVERBOSE
18 select ARCH_HAVE_CUSTOM_GPIO_H
19 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
20 select ARCH_HAS_GCOV_PROFILE_ALL
21 select PERF_USE_VMALLOC
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_KERNEL_GZIP
24 select CPU_NO_EFFICIENT_FFS
25 select HAVE_KERNEL_BZIP2
26 select HAVE_KERNEL_LZMA
27 select HAVE_KERNEL_XZ
28 select HAVE_KERNEL_LZO
29 select HAVE_UID16
30 select ARCH_WANT_IPC_PARSE_VERSION
31 select HAVE_SYSCALL_TRACEPOINTS
32 select HAVE_REGS_AND_STACK_ACCESS_API
33 select MAY_HAVE_SPARSE_IRQ
34 select IRQ_FORCED_THREADING
35 select RTC_LIB
36 select GENERIC_ATOMIC64
37 select GENERIC_IRQ_SHOW
38 select GENERIC_SMP_IDLE_THREAD
39 select GENERIC_IDLE_POLL_SETUP
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
42 select GENERIC_PCI_IOMAP if PCI
43 select GENERIC_SCHED_CLOCK
44 select GENERIC_STRNCPY_FROM_USER
45 select GENERIC_STRNLEN_USER
46 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
47 select MODULES_USE_ELF_RELA
48 select NO_GENERIC_PCI_IOPORT_MAP if PCI
49 select OLD_SIGSUSPEND
50 select OLD_SIGACTION
51 select PCI_DOMAINS if PCI
52 select HAVE_ARCH_AUDITSYSCALL
53 select HAVE_FUTEX_CMPXCHG if FUTEX
54 select HAVE_NMI
55 select NEED_SG_DMA_LENGTH
56
57 help
58 The SuperH is a RISC processor targeted for use in embedded systems
59 and consumer electronics; it was also used in the Sega Dreamcast
60 gaming console. The SuperH port has a home page at
61 <http://www.linux-sh.org/>.
62
63config SUPERH32
64 def_bool "$(ARCH)" = "sh"
65 select ARCH_32BIT_OFF_T
66 select HAVE_KPROBES
67 select HAVE_KRETPROBES
68 select HAVE_IOREMAP_PROT if MMU && !X2TLB
69 select HAVE_FUNCTION_TRACER
70 select HAVE_FTRACE_MCOUNT_RECORD
71 select HAVE_DYNAMIC_FTRACE
72 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
73 select ARCH_WANT_IPC_PARSE_VERSION
74 select HAVE_FUNCTION_GRAPH_TRACER
75 select HAVE_ARCH_KGDB
76 select HAVE_HW_BREAKPOINT
77 select HAVE_MIXED_BREAKPOINTS_REGS
78 select PERF_EVENTS
79 select ARCH_HIBERNATION_POSSIBLE if MMU
80 select SPARSE_IRQ
81 select HAVE_STACKPROTECTOR
82
83config SUPERH64
84 def_bool "$(ARCH)" = "sh64"
85 select HAVE_EXIT_THREAD
86 select KALLSYMS
87
88config ARCH_DEFCONFIG
89 string
90 default "arch/sh/configs/shx3_defconfig" if SUPERH32
91 default "arch/sh/configs/cayman_defconfig" if SUPERH64
92
93config RWSEM_GENERIC_SPINLOCK
94 def_bool y
95
96config RWSEM_XCHGADD_ALGORITHM
97 bool
98
99config GENERIC_BUG
100 def_bool y
101 depends on BUG && SUPERH32
102
103config GENERIC_CSUM
104 def_bool y
105 depends on SUPERH64
106
107config GENERIC_HWEIGHT
108 def_bool y
109
110config GENERIC_CALIBRATE_DELAY
111 bool
112
113config GENERIC_LOCKBREAK
114 def_bool y
115 depends on SMP && PREEMPT
116
117config ARCH_SUSPEND_POSSIBLE
118 def_bool n
119
120config ARCH_HIBERNATION_POSSIBLE
121 def_bool n
122
123config SYS_SUPPORTS_APM_EMULATION
124 bool
125 select ARCH_SUSPEND_POSSIBLE
126
127config SYS_SUPPORTS_HUGETLBFS
128 bool
129
130config SYS_SUPPORTS_SMP
131 bool
132
133config SYS_SUPPORTS_NUMA
134 bool
135
136config STACKTRACE_SUPPORT
137 def_bool y
138
139config LOCKDEP_SUPPORT
140 def_bool y
141
142config ARCH_HAS_ILOG2_U32
143 def_bool n
144
145config ARCH_HAS_ILOG2_U64
146 def_bool n
147
148config NO_IOPORT_MAP
149 def_bool !PCI
150 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
151 !SH_HP6XX && !SH_SOLUTION_ENGINE
152
153config IO_TRAPPED
154 bool
155
156config SWAP_IO_SPACE
157 bool
158
159config DMA_COHERENT
160 bool
161
162config DMA_NONCOHERENT
163 def_bool !DMA_COHERENT
164 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
165
166config PGTABLE_LEVELS
167 default 3 if X2TLB
168 default 2
169
170menu "System type"
171
172
173
174
175config CPU_SH2
176 bool
177 select SH_INTC
178
179config CPU_SH2A
180 bool
181 select CPU_SH2
182 select UNCACHED_MAPPING
183
184config CPU_J2
185 bool
186 select CPU_SH2
187 select OF
188 select OF_EARLY_FLATTREE
189
190config CPU_SH3
191 bool
192 select CPU_HAS_INTEVT
193 select CPU_HAS_SR_RB
194 select SH_INTC
195 select SYS_SUPPORTS_SH_TMU
196
197config CPU_SH4
198 bool
199 select CPU_HAS_INTEVT
200 select CPU_HAS_SR_RB
201 select CPU_HAS_FPU if !CPU_SH4AL_DSP
202 select SH_INTC
203 select SYS_SUPPORTS_SH_TMU
204 select SYS_SUPPORTS_HUGETLBFS if MMU
205
206config CPU_SH4A
207 bool
208 select CPU_SH4
209
210config CPU_SH4AL_DSP
211 bool
212 select CPU_SH4A
213 select CPU_HAS_DSP
214
215config CPU_SH5
216 bool
217 select CPU_HAS_FPU
218 select SYS_SUPPORTS_SH_TMU
219 select SYS_SUPPORTS_HUGETLBFS if MMU
220
221config CPU_SHX2
222 bool
223
224config CPU_SHX3
225 bool
226 select DMA_COHERENT
227 select SYS_SUPPORTS_SMP
228 select SYS_SUPPORTS_NUMA
229
230config ARCH_SHMOBILE
231 bool
232 select ARCH_SUSPEND_POSSIBLE
233 select PM
234
235config CPU_HAS_PMU
236 depends on CPU_SH4 || CPU_SH4A
237 default y
238 bool
239
240if SUPERH32
241
242choice
243 prompt "Processor sub-type selection"
244
245
246
247
248
249
250
251config CPU_SUBTYPE_SH7619
252 bool "Support SH7619 processor"
253 select CPU_SH2
254 select SYS_SUPPORTS_SH_CMT
255
256config CPU_SUBTYPE_J2
257 bool "Support J2 processor"
258 select CPU_J2
259 select SYS_SUPPORTS_SMP
260 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
261
262
263
264config CPU_SUBTYPE_SH7201
265 bool "Support SH7201 processor"
266 select CPU_SH2A
267 select CPU_HAS_FPU
268 select SYS_SUPPORTS_SH_MTU2
269
270config CPU_SUBTYPE_SH7203
271 bool "Support SH7203 processor"
272 select CPU_SH2A
273 select CPU_HAS_FPU
274 select SYS_SUPPORTS_SH_CMT
275 select SYS_SUPPORTS_SH_MTU2
276 select PINCTRL
277
278config CPU_SUBTYPE_SH7206
279 bool "Support SH7206 processor"
280 select CPU_SH2A
281 select SYS_SUPPORTS_SH_CMT
282 select SYS_SUPPORTS_SH_MTU2
283
284config CPU_SUBTYPE_SH7263
285 bool "Support SH7263 processor"
286 select CPU_SH2A
287 select CPU_HAS_FPU
288 select SYS_SUPPORTS_SH_CMT
289 select SYS_SUPPORTS_SH_MTU2
290
291config CPU_SUBTYPE_SH7264
292 bool "Support SH7264 processor"
293 select CPU_SH2A
294 select CPU_HAS_FPU
295 select SYS_SUPPORTS_SH_CMT
296 select SYS_SUPPORTS_SH_MTU2
297 select PINCTRL
298
299config CPU_SUBTYPE_SH7269
300 bool "Support SH7269 processor"
301 select CPU_SH2A
302 select CPU_HAS_FPU
303 select SYS_SUPPORTS_SH_CMT
304 select SYS_SUPPORTS_SH_MTU2
305 select PINCTRL
306
307config CPU_SUBTYPE_MXG
308 bool "Support MX-G processor"
309 select CPU_SH2A
310 select SYS_SUPPORTS_SH_MTU2
311 help
312 Select MX-G if running on an R8A03022BG part.
313
314
315
316config CPU_SUBTYPE_SH7705
317 bool "Support SH7705 processor"
318 select CPU_SH3
319
320config CPU_SUBTYPE_SH7706
321 bool "Support SH7706 processor"
322 select CPU_SH3
323 help
324 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
325
326config CPU_SUBTYPE_SH7707
327 bool "Support SH7707 processor"
328 select CPU_SH3
329 help
330 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
331
332config CPU_SUBTYPE_SH7708
333 bool "Support SH7708 processor"
334 select CPU_SH3
335 help
336 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
337 if you have a 100 Mhz SH-3 HD6417708R CPU.
338
339config CPU_SUBTYPE_SH7709
340 bool "Support SH7709 processor"
341 select CPU_SH3
342 help
343 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
344
345config CPU_SUBTYPE_SH7710
346 bool "Support SH7710 processor"
347 select CPU_SH3
348 select CPU_HAS_DSP
349 help
350 Select SH7710 if you have a SH3-DSP SH7710 CPU.
351
352config CPU_SUBTYPE_SH7712
353 bool "Support SH7712 processor"
354 select CPU_SH3
355 select CPU_HAS_DSP
356 help
357 Select SH7712 if you have a SH3-DSP SH7712 CPU.
358
359config CPU_SUBTYPE_SH7720
360 bool "Support SH7720 processor"
361 select CPU_SH3
362 select CPU_HAS_DSP
363 select SYS_SUPPORTS_SH_CMT
364 select USB_OHCI_SH if USB_OHCI_HCD
365 select PINCTRL
366 help
367 Select SH7720 if you have a SH3-DSP SH7720 CPU.
368
369config CPU_SUBTYPE_SH7721
370 bool "Support SH7721 processor"
371 select CPU_SH3
372 select CPU_HAS_DSP
373 select SYS_SUPPORTS_SH_CMT
374 select USB_OHCI_SH if USB_OHCI_HCD
375 help
376 Select SH7721 if you have a SH3-DSP SH7721 CPU.
377
378
379
380config CPU_SUBTYPE_SH7750
381 bool "Support SH7750 processor"
382 select CPU_SH4
383 help
384 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
385
386config CPU_SUBTYPE_SH7091
387 bool "Support SH7091 processor"
388 select CPU_SH4
389 help
390 Select SH7091 if you have an SH-4 based Sega device (such as
391 the Dreamcast, Naomi, and Naomi 2).
392
393config CPU_SUBTYPE_SH7750R
394 bool "Support SH7750R processor"
395 select CPU_SH4
396
397config CPU_SUBTYPE_SH7750S
398 bool "Support SH7750S processor"
399 select CPU_SH4
400
401config CPU_SUBTYPE_SH7751
402 bool "Support SH7751 processor"
403 select CPU_SH4
404 help
405 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
406 or if you have a HD6417751R CPU.
407
408config CPU_SUBTYPE_SH7751R
409 bool "Support SH7751R processor"
410 select CPU_SH4
411
412config CPU_SUBTYPE_SH7760
413 bool "Support SH7760 processor"
414 select CPU_SH4
415
416config CPU_SUBTYPE_SH4_202
417 bool "Support SH4-202 processor"
418 select CPU_SH4
419
420
421
422config CPU_SUBTYPE_SH7723
423 bool "Support SH7723 processor"
424 select CPU_SH4A
425 select CPU_SHX2
426 select ARCH_SHMOBILE
427 select ARCH_SPARSEMEM_ENABLE
428 select SYS_SUPPORTS_SH_CMT
429 select PINCTRL
430 help
431 Select SH7723 if you have an SH-MobileR2 CPU.
432
433config CPU_SUBTYPE_SH7724
434 bool "Support SH7724 processor"
435 select CPU_SH4A
436 select CPU_SHX2
437 select ARCH_SHMOBILE
438 select ARCH_SPARSEMEM_ENABLE
439 select SYS_SUPPORTS_SH_CMT
440 select PINCTRL
441 help
442 Select SH7724 if you have an SH-MobileR2R CPU.
443
444config CPU_SUBTYPE_SH7734
445 bool "Support SH7734 processor"
446 select CPU_SH4A
447 select CPU_SHX2
448 select PINCTRL
449 help
450 Select SH7734 if you have a SH4A SH7734 CPU.
451
452config CPU_SUBTYPE_SH7757
453 bool "Support SH7757 processor"
454 select CPU_SH4A
455 select CPU_SHX2
456 select PINCTRL
457 help
458 Select SH7757 if you have a SH4A SH7757 CPU.
459
460config CPU_SUBTYPE_SH7763
461 bool "Support SH7763 processor"
462 select CPU_SH4A
463 select USB_OHCI_SH if USB_OHCI_HCD
464 help
465 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
466
467config CPU_SUBTYPE_SH7770
468 bool "Support SH7770 processor"
469 select CPU_SH4A
470
471config CPU_SUBTYPE_SH7780
472 bool "Support SH7780 processor"
473 select CPU_SH4A
474
475config CPU_SUBTYPE_SH7785
476 bool "Support SH7785 processor"
477 select CPU_SH4A
478 select CPU_SHX2
479 select ARCH_SPARSEMEM_ENABLE
480 select SYS_SUPPORTS_NUMA
481 select PINCTRL
482
483config CPU_SUBTYPE_SH7786
484 bool "Support SH7786 processor"
485 select CPU_SH4A
486 select CPU_SHX3
487 select CPU_HAS_PTEAEX
488 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
489 select USB_OHCI_SH if USB_OHCI_HCD
490 select USB_EHCI_SH if USB_EHCI_HCD
491 select PINCTRL
492
493config CPU_SUBTYPE_SHX3
494 bool "Support SH-X3 processor"
495 select CPU_SH4A
496 select CPU_SHX3
497 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
498 select GPIOLIB
499 select PINCTRL
500
501
502
503config CPU_SUBTYPE_SH7343
504 bool "Support SH7343 processor"
505 select CPU_SH4AL_DSP
506 select ARCH_SHMOBILE
507 select SYS_SUPPORTS_SH_CMT
508
509config CPU_SUBTYPE_SH7722
510 bool "Support SH7722 processor"
511 select CPU_SH4AL_DSP
512 select CPU_SHX2
513 select ARCH_SHMOBILE
514 select ARCH_SPARSEMEM_ENABLE
515 select SYS_SUPPORTS_NUMA
516 select SYS_SUPPORTS_SH_CMT
517 select PINCTRL
518
519config CPU_SUBTYPE_SH7366
520 bool "Support SH7366 processor"
521 select CPU_SH4AL_DSP
522 select CPU_SHX2
523 select ARCH_SHMOBILE
524 select ARCH_SPARSEMEM_ENABLE
525 select SYS_SUPPORTS_NUMA
526 select SYS_SUPPORTS_SH_CMT
527
528endchoice
529
530endif
531
532if SUPERH64
533
534choice
535 prompt "Processor sub-type selection"
536
537
538
539config CPU_SUBTYPE_SH5_101
540 bool "Support SH5-101 processor"
541 select CPU_SH5
542
543config CPU_SUBTYPE_SH5_103
544 bool "Support SH5-103 processor"
545 select CPU_SH5
546
547endchoice
548
549endif
550
551source "arch/sh/mm/Kconfig"
552
553source "arch/sh/Kconfig.cpu"
554
555source "arch/sh/boards/Kconfig"
556
557menu "Timer and clock configuration"
558
559config SH_PCLK_FREQ
560 int "Peripheral clock frequency (in Hz)"
561 depends on SH_CLK_CPG_LEGACY
562 default "31250000" if CPU_SUBTYPE_SH7619
563 default "33333333" if CPU_SUBTYPE_SH7770 || \
564 CPU_SUBTYPE_SH7760 || \
565 CPU_SUBTYPE_SH7705 || \
566 CPU_SUBTYPE_SH7203 || \
567 CPU_SUBTYPE_SH7206 || \
568 CPU_SUBTYPE_SH7263 || \
569 CPU_SUBTYPE_MXG
570 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
571 default "66000000" if CPU_SUBTYPE_SH4_202
572 default "50000000"
573 help
574 This option is used to specify the peripheral clock frequency.
575 This is necessary for determining the reference clock value on
576 platforms lacking an RTC.
577
578config SH_CLK_CPG
579 def_bool y
580
581config SH_CLK_CPG_LEGACY
582 depends on SH_CLK_CPG
583 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
584 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
585 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
586 !CPU_SUBTYPE_SH7269
587
588endmenu
589
590menu "CPU Frequency scaling"
591source "drivers/cpufreq/Kconfig"
592endmenu
593
594source "arch/sh/drivers/Kconfig"
595
596endmenu
597
598menu "Kernel features"
599
600source "kernel/Kconfig.hz"
601
602config KEXEC
603 bool "kexec system call (EXPERIMENTAL)"
604 depends on SUPERH32 && MMU
605 select KEXEC_CORE
606 help
607 kexec is a system call that implements the ability to shutdown your
608 current kernel, and to start another kernel. It is like a reboot
609 but it is independent of the system firmware. And like a reboot
610 you can start any kernel with it, not just Linux.
611
612 The name comes from the similarity to the exec system call.
613
614 It is an ongoing process to be certain the hardware in a machine
615 is properly shutdown, so do not be surprised if this code does not
616 initially work for you. As of this writing the exact hardware
617 interface is strongly in flux, so no good recommendation can be
618 made.
619
620config CRASH_DUMP
621 bool "kernel crash dumps (EXPERIMENTAL)"
622 depends on SUPERH32 && BROKEN_ON_SMP
623 help
624 Generate crash dump after being started by kexec.
625 This should be normally only set in special crash dump kernels
626 which are loaded in the main kernel with kexec-tools into
627 a specially reserved region and then later executed after
628 a crash by kdump/kexec. The crash dump kernel must be compiled
629 to a memory address not used by the main kernel using
630 PHYSICAL_START.
631
632 For more details see Documentation/kdump/kdump.txt
633
634config KEXEC_JUMP
635 bool "kexec jump (EXPERIMENTAL)"
636 depends on SUPERH32 && KEXEC && HIBERNATION
637 help
638 Jump between original kernel and kexeced kernel and invoke
639 code via KEXEC
640
641config PHYSICAL_START
642 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
643 default MEMORY_START
644 ---help---
645 This gives the physical address where the kernel is loaded
646 and is ordinarily the same as MEMORY_START.
647
648 Different values are primarily used in the case of kexec on panic
649 where the fail safe kernel needs to run at a different address
650 than the panic-ed kernel.
651
652config SECCOMP
653 bool "Enable seccomp to safely compute untrusted bytecode"
654 depends on PROC_FS
655 help
656 This kernel feature is useful for number crunching applications
657 that may need to compute untrusted bytecode during their
658 execution. By using pipes or other transports made available to
659 the process as file descriptors supporting the read/write
660 syscalls, it's possible to isolate those applications in
661 their own address space using seccomp. Once seccomp is
662 enabled via prctl, it cannot be disabled and the task is only
663 allowed to execute a few safe syscalls defined by each seccomp
664 mode.
665
666 If unsure, say N.
667
668config SMP
669 bool "Symmetric multi-processing support"
670 depends on SYS_SUPPORTS_SMP
671 ---help---
672 This enables support for systems with more than one CPU. If you have
673 a system with only one CPU, say N. If you have a system with more
674 than one CPU, say Y.
675
676 If you say N here, the kernel will run on uni- and multiprocessor
677 machines, but will use only one CPU of a multiprocessor machine. If
678 you say Y here, the kernel will run on many, but not all,
679 uniprocessor machines. On a uniprocessor machine, the kernel
680 will run faster if you say N here.
681
682 People using multiprocessor machines who say Y here should also say
683 Y to "Enhanced Real Time Clock Support", below.
684
685 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
686 available at <http://www.tldp.org/docs.html
687
688 If you don't know what to do here, say N.
689
690config NR_CPUS
691 int "Maximum number of CPUs (2-32)"
692 range 2 32
693 depends on SMP
694 default "4" if CPU_SUBTYPE_SHX3
695 default "2"
696 help
697 This allows you to specify the maximum number of CPUs which this
698 kernel will support. The maximum supported value is 32 and the
699 minimum value which makes sense is 2.
700
701 This is purely to save memory - each supported CPU adds
702 approximately eight kilobytes to the kernel image.
703
704config HOTPLUG_CPU
705 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
706 depends on SMP
707 help
708 Say Y here to experiment with turning CPUs off and on. CPUs
709 can be controlled through /sys/devices/system/cpu.
710
711config GUSA
712 def_bool y
713 depends on !SMP && SUPERH32
714 help
715 This enables support for gUSA (general UserSpace Atomicity).
716 This is the default implementation for both UP and non-ll/sc
717 CPUs, and is used by the libc, amongst others.
718
719 For additional information, design information can be found
720 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
721
722 This should only be disabled for special cases where alternate
723 atomicity implementations exist.
724
725config GUSA_RB
726 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
727 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
728 help
729 Enabling this option will allow the kernel to implement some
730 atomic operations using a software implementation of load-locked/
731 store-conditional (LLSC). On machines which do not have hardware
732 LLSC, this should be more efficient than the other alternative of
733 disabling interrupts around the atomic sequence.
734
735config HW_PERF_EVENTS
736 bool "Enable hardware performance counter support for perf events"
737 depends on PERF_EVENTS && CPU_HAS_PMU
738 default y
739 help
740 Enable hardware performance counter support for perf events. If
741 disabled, perf events will use software events only.
742
743source "drivers/sh/Kconfig"
744
745endmenu
746
747menu "Boot options"
748
749config USE_BUILTIN_DTB
750 bool "Use builtin DTB"
751 default n
752 depends on SH_DEVICE_TREE
753 help
754 Link a device tree blob for particular hardware into the kernel,
755 suppressing use of the DTB pointer provided by the bootloader.
756 This option should only be used with legacy bootloaders that are
757 not capable of providing a DTB to the kernel, or for experimental
758 hardware without stable device tree bindings.
759
760config BUILTIN_DTB_SOURCE
761 string "Source file for builtin DTB"
762 default ""
763 depends on USE_BUILTIN_DTB
764 help
765 Base name (without suffix, relative to arch/sh/boot/dts) for the
766 a DTS file that will be used to produce the DTB linked into the
767 kernel.
768
769config ZERO_PAGE_OFFSET
770 hex
771 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
772 SH_7751_SOLUTION_ENGINE
773 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
774 default "0x00002000" if PAGE_SIZE_8KB
775 default "0x00001000"
776 help
777 This sets the default offset of zero page.
778
779config BOOT_LINK_OFFSET
780 hex
781 default "0x00210000" if SH_SHMIN
782 default "0x00400000" if SH_CAYMAN
783 default "0x00810000" if SH_7780_SOLUTION_ENGINE
784 default "0x009e0000" if SH_TITAN
785 default "0x01800000" if SH_SDK7780
786 default "0x02000000" if SH_EDOSK7760
787 default "0x00800000"
788 help
789 This option allows you to set the link address offset of the zImage.
790 This can be useful if you are on a board which has a small amount of
791 memory.
792
793config ENTRY_OFFSET
794 hex
795 default "0x00001000" if PAGE_SIZE_4KB
796 default "0x00002000" if PAGE_SIZE_8KB
797 default "0x00004000" if PAGE_SIZE_16KB
798 default "0x00010000" if PAGE_SIZE_64KB
799 default "0x00000000"
800
801config ROMIMAGE_MMCIF
802 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
803 depends on CPU_SUBTYPE_SH7724
804 help
805 Say Y here to include experimental MMCIF loading code in
806 romImage. With this enabled it is possible to write the romImage
807 kernel image to an MMC card and boot the kernel straight from
808 the reset vector. At reset the processor Mask ROM will load the
809 first part of the romImage which in turn loads the rest the kernel
810 image to RAM using the MMCIF hardware block.
811
812choice
813 prompt "Kernel command line"
814 optional
815 default CMDLINE_OVERWRITE
816 help
817 Setting this option allows the kernel command line arguments
818 to be set.
819
820config CMDLINE_OVERWRITE
821 bool "Overwrite bootloader kernel arguments"
822 help
823 Given string will overwrite any arguments passed in by
824 a bootloader.
825
826config CMDLINE_EXTEND
827 bool "Extend bootloader kernel arguments"
828 help
829 Given string will be concatenated with arguments passed in
830 by a bootloader.
831
832endchoice
833
834config CMDLINE
835 string "Kernel command line arguments string"
836 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
837 default "console=ttySC1,115200"
838
839endmenu
840
841menu "Bus options"
842
843config SUPERHYWAY
844 tristate "SuperHyway Bus support"
845 depends on CPU_SUBTYPE_SH4_202
846
847config MAPLE
848 bool "Maple Bus support"
849 depends on SH_DREAMCAST
850 help
851 The Maple Bus is SEGA's serial communication bus for peripherals
852 on the Dreamcast. Without this bus support you won't be able to
853 get your Dreamcast keyboard etc to work, so most users
854 probably want to say 'Y' here, unless you are only using the
855 Dreamcast with a serial line terminal or a remote network
856 connection.
857
858endmenu
859
860menu "Power management options (EXPERIMENTAL)"
861
862source "kernel/power/Kconfig"
863
864source "drivers/cpuidle/Kconfig"
865
866endmenu
867
