2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux/SuperH Kernel Configuration"
14 select HAVE_GENERIC_DMA_COHERENT
15 select HAVE_IOREMAP_PROT if MMU
16 select HAVE_ARCH_TRACEHOOK
18 The SuperH is a RISC processor targeted for use in embedded systems
19 and consumer electronics; it was also used in the Sega Dreamcast
20 gaming console. The SuperH port has a home page at
21 <http://www.linux-sh.org/>.
26 select HAVE_KRETPROBES
27 select HAVE_FUNCTION_TRACER
28 select HAVE_FTRACE_MCOUNT_RECORD
29 select HAVE_DYNAMIC_FTRACE
31 select ARCH_HIBERNATION_POSSIBLE if MMU
38 default "arch/sh/configs/shx3_defconfig" if SUPERH32
39 default "arch/sh/configs/cayman_defconfig" if SUPERH64
41 config RWSEM_GENERIC_SPINLOCK
44 config RWSEM_XCHGADD_ALGORITHM
49 depends on BUG && SUPERH32
51 config GENERIC_FIND_NEXT_BIT
54 config GENERIC_HWEIGHT
57 config GENERIC_HARDIRQS
60 config GENERIC_HARDIRQS_NO__DO_IRQ
63 config GENERIC_IRQ_PROBE
69 config GENERIC_CALIBRATE_DELAY
78 config GENERIC_CLOCKEVENTS
81 config GENERIC_CLOCKEVENTS_BROADCAST
84 config GENERIC_LOCKBREAK
86 depends on SMP && PREEMPT
88 config SYS_SUPPORTS_PM
92 config ARCH_SUSPEND_POSSIBLE
95 config ARCH_HIBERNATION_POSSIBLE
98 config SYS_SUPPORTS_APM_EMULATION
100 select ARCH_SUSPEND_POSSIBLE
102 config SYS_SUPPORTS_SMP
105 config SYS_SUPPORTS_NUMA
108 config SYS_SUPPORTS_PCI
111 config SYS_SUPPORTS_CMT
114 config STACKTRACE_SUPPORT
117 config LOCKDEP_SUPPORT
120 config HAVE_LATENCYTOP_SUPPORT
124 config ARCH_HAS_ILOG2_U32
127 config ARCH_HAS_ILOG2_U64
130 config ARCH_NO_VIRT_TO_BUS
136 source "init/Kconfig"
138 source "kernel/Kconfig.freezer"
154 select CPU_HAS_INTEVT
159 select CPU_HAS_INTEVT
161 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
162 select CPU_HAS_FPU if !CPU_SH4AL_DSP
185 select ARCH_SUSPEND_POSSIBLE
188 prompt "Processor sub-type selection"
194 # SH-2 Processor Support
196 config CPU_SUBTYPE_SH7619
197 bool "Support SH7619 processor"
199 select SYS_SUPPORTS_CMT
201 # SH-2A Processor Support
203 config CPU_SUBTYPE_SH7201
204 bool "Support SH7201 processor"
208 config CPU_SUBTYPE_SH7203
209 bool "Support SH7203 processor"
212 select SYS_SUPPORTS_CMT
214 config CPU_SUBTYPE_SH7206
215 bool "Support SH7206 processor"
217 select SYS_SUPPORTS_CMT
219 config CPU_SUBTYPE_SH7263
220 bool "Support SH7263 processor"
223 select SYS_SUPPORTS_CMT
225 config CPU_SUBTYPE_MXG
226 bool "Support MX-G processor"
229 Select MX-G if running on an R8A03022BG part.
231 # SH-3 Processor Support
233 config CPU_SUBTYPE_SH7705
234 bool "Support SH7705 processor"
237 config CPU_SUBTYPE_SH7706
238 bool "Support SH7706 processor"
241 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
243 config CPU_SUBTYPE_SH7707
244 bool "Support SH7707 processor"
247 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
249 config CPU_SUBTYPE_SH7708
250 bool "Support SH7708 processor"
253 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
254 if you have a 100 Mhz SH-3 HD6417708R CPU.
256 config CPU_SUBTYPE_SH7709
257 bool "Support SH7709 processor"
260 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
262 config CPU_SUBTYPE_SH7710
263 bool "Support SH7710 processor"
267 Select SH7710 if you have a SH3-DSP SH7710 CPU.
269 config CPU_SUBTYPE_SH7712
270 bool "Support SH7712 processor"
274 Select SH7712 if you have a SH3-DSP SH7712 CPU.
276 config CPU_SUBTYPE_SH7720
277 bool "Support SH7720 processor"
281 Select SH7720 if you have a SH3-DSP SH7720 CPU.
283 config CPU_SUBTYPE_SH7721
284 bool "Support SH7721 processor"
288 Select SH7721 if you have a SH3-DSP SH7721 CPU.
290 # SH-4 Processor Support
292 config CPU_SUBTYPE_SH7750
293 bool "Support SH7750 processor"
296 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
298 config CPU_SUBTYPE_SH7091
299 bool "Support SH7091 processor"
302 Select SH7091 if you have an SH-4 based Sega device (such as
303 the Dreamcast, Naomi, and Naomi 2).
305 config CPU_SUBTYPE_SH7750R
306 bool "Support SH7750R processor"
309 config CPU_SUBTYPE_SH7750S
310 bool "Support SH7750S processor"
313 config CPU_SUBTYPE_SH7751
314 bool "Support SH7751 processor"
317 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
318 or if you have a HD6417751R CPU.
320 config CPU_SUBTYPE_SH7751R
321 bool "Support SH7751R processor"
324 config CPU_SUBTYPE_SH7760
325 bool "Support SH7760 processor"
328 config CPU_SUBTYPE_SH4_202
329 bool "Support SH4-202 processor"
332 # SH-4A Processor Support
334 config CPU_SUBTYPE_SH7723
335 bool "Support SH7723 processor"
339 select ARCH_SPARSEMEM_ENABLE
340 select SYS_SUPPORTS_CMT
342 Select SH7723 if you have an SH-MobileR2 CPU.
344 config CPU_SUBTYPE_SH7763
345 bool "Support SH7763 processor"
348 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
350 config CPU_SUBTYPE_SH7770
351 bool "Support SH7770 processor"
354 config CPU_SUBTYPE_SH7780
355 bool "Support SH7780 processor"
358 config CPU_SUBTYPE_SH7785
359 bool "Support SH7785 processor"
362 select ARCH_SPARSEMEM_ENABLE
363 select SYS_SUPPORTS_NUMA
365 config CPU_SUBTYPE_SH7786
366 bool "Support SH7786 processor"
369 select CPU_HAS_PTEAEX
370 select ARCH_SPARSEMEM_ENABLE
371 select SYS_SUPPORTS_NUMA
373 config CPU_SUBTYPE_SHX3
374 bool "Support SH-X3 processor"
377 select ARCH_SPARSEMEM_ENABLE
378 select SYS_SUPPORTS_NUMA
379 select SYS_SUPPORTS_SMP
380 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
382 # SH4AL-DSP Processor Support
384 config CPU_SUBTYPE_SH7343
385 bool "Support SH7343 processor"
388 select SYS_SUPPORTS_CMT
390 config CPU_SUBTYPE_SH7722
391 bool "Support SH7722 processor"
395 select ARCH_SPARSEMEM_ENABLE
396 select SYS_SUPPORTS_NUMA
397 select SYS_SUPPORTS_CMT
399 config CPU_SUBTYPE_SH7366
400 bool "Support SH7366 processor"
404 select ARCH_SPARSEMEM_ENABLE
405 select SYS_SUPPORTS_NUMA
406 select SYS_SUPPORTS_CMT
408 # SH-5 Processor Support
410 config CPU_SUBTYPE_SH5_101
411 bool "Support SH5-101 processor"
414 config CPU_SUBTYPE_SH5_103
415 bool "Support SH5-103 processor"
420 source "arch/sh/mm/Kconfig"
422 source "arch/sh/Kconfig.cpu"
424 source "arch/sh/boards/Kconfig"
426 menu "Timer and clock configuration"
429 bool "TMU timer support"
430 depends on CPU_SH3 || CPU_SH4
433 select GENERIC_CLOCKEVENTS
435 This enables the use of the TMU as the system timer.
438 bool "CMT timer support"
439 depends on SYS_SUPPORTS_CMT && CPU_SH2
442 This enables the use of the CMT as the system timer.
445 # Support for the new-style CMT driver. This will replace SH_CMT
446 # once its other dependencies are merged.
449 bool "CMT clockevents driver"
450 depends on SYS_SUPPORTS_CMT && !SH_CMT
451 select GENERIC_CLOCKEVENTS
454 bool "MTU2 timer support"
458 This enables the use of the MTU2 as the system timer.
462 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
464 default "86" if CPU_SUBTYPE_SH7619
465 default "140" if CPU_SUBTYPE_SH7206
466 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
467 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
468 default "238" if CPU_SUBTYPE_MXG
472 int "Peripheral clock frequency (in Hz)"
473 default "27000000" if CPU_SUBTYPE_SH7343
474 default "31250000" if CPU_SUBTYPE_SH7619
475 default "32000000" if CPU_SUBTYPE_SH7722
476 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
477 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
478 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
479 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
481 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
482 default "66000000" if CPU_SUBTYPE_SH4_202
485 This option is used to specify the peripheral clock frequency.
486 This is necessary for determining the reference clock value on
487 platforms lacking an RTC.
490 int "CPU Mode Pin Setting"
492 default 6 if CPU_SUBTYPE_SH7206
493 default 5 if CPU_SUBTYPE_SH7619
496 MD2 - MD0 pin setting.
498 source "kernel/time/Kconfig"
502 menu "CPU Frequency scaling"
504 source "drivers/cpufreq/Kconfig"
507 tristate "SuperH CPU Frequency driver"
509 select CPU_FREQ_TABLE
511 This adds the cpufreq driver for SuperH. Any CPU that supports
512 clock rate rounding through the clock framework can use this
513 driver. While it will make the kernel slightly larger, this is
514 harmless for CPUs that don't support rate rounding. The driver
515 will also generate a notice in the boot log before disabling
516 itself if the CPU in question is not capable of rate rounding.
518 For details, take a look at <file:Documentation/cpu-freq>.
524 source "arch/sh/drivers/Kconfig"
528 menu "Kernel features"
530 source kernel/Kconfig.hz
533 bool "kexec system call (EXPERIMENTAL)"
534 depends on SUPERH32 && EXPERIMENTAL && MMU
536 kexec is a system call that implements the ability to shutdown your
537 current kernel, and to start another kernel. It is like a reboot
538 but it is independent of the system firmware. And like a reboot
539 you can start any kernel with it, not just Linux.
541 The name comes from the similarity to the exec system call.
543 It is an ongoing process to be certain the hardware in a machine
544 is properly shutdown, so do not be surprised if this code does not
545 initially work for you. It may help to enable device hotplugging
546 support. As of this writing the exact hardware interface is
547 strongly in flux, so no good recommendation can be made.
550 bool "kernel crash dumps (EXPERIMENTAL)"
551 depends on SUPERH32 && EXPERIMENTAL
553 Generate crash dump after being started by kexec.
554 This should be normally only set in special crash dump kernels
555 which are loaded in the main kernel with kexec-tools into
556 a specially reserved region and then later executed after
557 a crash by kdump/kexec. The crash dump kernel must be compiled
558 to a memory address not used by the main kernel using
561 For more details see Documentation/kdump/kdump.txt
564 bool "kexec jump (EXPERIMENTAL)"
565 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
567 Jump between original kernel and kexeced kernel and invoke
571 bool "Enable seccomp to safely compute untrusted bytecode"
574 This kernel feature is useful for number crunching applications
575 that may need to compute untrusted bytecode during their
576 execution. By using pipes or other transports made available to
577 the process as file descriptors supporting the read/write
578 syscalls, it's possible to isolate those applications in
579 their own address space using seccomp. Once seccomp is
580 enabled via prctl, it cannot be disabled and the task is only
581 allowed to execute a few safe syscalls defined by each seccomp
587 bool "Symmetric multi-processing support"
588 depends on SYS_SUPPORTS_SMP
589 select USE_GENERIC_SMP_HELPERS
591 This enables support for systems with more than one CPU. If you have
592 a system with only one CPU, like most personal computers, say N. If
593 you have a system with more than one CPU, say Y.
595 If you say N here, the kernel will run on single and multiprocessor
596 machines, but will use only one CPU of a multiprocessor machine. If
597 you say Y here, the kernel will run on many, but not all,
598 singleprocessor machines. On a singleprocessor machine, the kernel
599 will run faster if you say N here.
601 People using multiprocessor machines who say Y here should also say
602 Y to "Enhanced Real Time Clock Support", below.
604 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
605 available at <http://www.tldp.org/docs.html#howto>.
607 If you don't know what to do here, say N.
610 int "Maximum number of CPUs (2-32)"
613 default "4" if CPU_SHX3
616 This allows you to specify the maximum number of CPUs which this
617 kernel will support. The maximum supported value is 32 and the
618 minimum value which makes sense is 2.
620 This is purely to save memory - each supported CPU adds
621 approximately eight kilobytes to the kernel image.
623 source "kernel/Kconfig.preempt"
627 depends on !SMP && SUPERH32
629 This enables support for gUSA (general UserSpace Atomicity).
630 This is the default implementation for both UP and non-ll/sc
631 CPUs, and is used by the libc, amongst others.
633 For additional information, design information can be found
634 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
636 This should only be disabled for special cases where alternate
637 atomicity implementations exist.
640 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
641 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
643 Enabling this option will allow the kernel to implement some
644 atomic operations using a software implemention of load-locked/
645 store-conditional (LLSC). On machines which do not have hardware
646 LLSC, this should be more efficient than the other alternative of
647 disabling insterrupts around the atomic sequence.
653 config ZERO_PAGE_OFFSET
654 hex "Zero page offset"
655 default "0x00004000" if SH_SH03
656 default "0x00010000" if PAGE_SIZE_64KB
657 default "0x00002000" if PAGE_SIZE_8KB
660 This sets the default offset of zero page.
662 config BOOT_LINK_OFFSET
663 hex "Link address offset for booting"
666 This option allows you to set the link address offset of the zImage.
667 This can be useful if you are on a board which has a small amount of
671 bool "Wakeup UBC on startup"
672 depends on CPU_SH4 && !CPU_SH4A
674 Selecting this option will wakeup the User Break Controller (UBC) on
675 startup. Although the UBC is left in an awake state when the processor
676 comes up, some boot loaders misbehave by putting the UBC to sleep in a
677 power saving state, which causes issues with things like ptrace().
682 bool "Default bootloader kernel arguments"
685 string "Initial kernel command string"
686 depends on CMDLINE_BOOL
687 default "console=ttySC1,115200"
694 tristate "SuperHyway Bus support"
695 depends on CPU_SUBTYPE_SH4_202
698 bool "Maple Bus support"
699 depends on SH_DREAMCAST
701 The Maple Bus is SEGA's serial communication bus for peripherals
702 on the Dreamcast. Without this bus support you won't be able to
703 get your Dreamcast keyboard etc to work, so most users
704 probably want to say 'Y' here, unless you are only using the
705 Dreamcast with a serial line terminal or a remote network
708 source "arch/sh/drivers/pci/Kconfig"
710 source "drivers/pci/pcie/Kconfig"
712 source "drivers/pci/Kconfig"
714 source "drivers/pcmcia/Kconfig"
716 source "drivers/pci/hotplug/Kconfig"
720 menu "Executable file formats"
722 source "fs/Kconfig.binfmt"
726 menu "Power management options (EXPERIMENTAL)"
727 depends on EXPERIMENTAL
729 source "kernel/power/Kconfig"
731 source "drivers/cpuidle/Kconfig"
737 source "drivers/Kconfig"
741 source "arch/sh/Kconfig.debug"
743 source "security/Kconfig"
745 source "crypto/Kconfig"