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
17 select HAVE_DMA_API_DEBUG
19 The SuperH is a RISC processor targeted for use in embedded systems
20 and consumer electronics; it was also used in the Sega Dreamcast
21 gaming console. The SuperH port has a home page at
22 <http://www.linux-sh.org/>.
27 select HAVE_KRETPROBES
28 select HAVE_FUNCTION_TRACER
29 select HAVE_FTRACE_MCOUNT_RECORD
30 select HAVE_DYNAMIC_FTRACE
32 select ARCH_HIBERNATION_POSSIBLE if MMU
36 def_bool ARCH = "sh64"
40 default "arch/sh/configs/shx3_defconfig" if SUPERH32
41 default "arch/sh/configs/cayman_defconfig" if SUPERH64
43 config RWSEM_GENERIC_SPINLOCK
46 config RWSEM_XCHGADD_ALGORITHM
51 depends on BUG && SUPERH32
53 config GENERIC_FIND_NEXT_BIT
56 config GENERIC_HWEIGHT
59 config GENERIC_HARDIRQS
62 config GENERIC_HARDIRQS_NO__DO_IRQ
65 config GENERIC_IRQ_PROBE
71 config GENERIC_CALIBRATE_DELAY
80 config GENERIC_CLOCKEVENTS
83 config GENERIC_CLOCKEVENTS_BROADCAST
86 config GENERIC_LOCKBREAK
88 depends on SMP && PREEMPT
90 config SYS_SUPPORTS_PM
94 config ARCH_SUSPEND_POSSIBLE
97 config ARCH_HIBERNATION_POSSIBLE
100 config SYS_SUPPORTS_APM_EMULATION
102 select ARCH_SUSPEND_POSSIBLE
104 config SYS_SUPPORTS_SMP
107 config SYS_SUPPORTS_NUMA
110 config SYS_SUPPORTS_PCI
113 config SYS_SUPPORTS_CMT
116 config STACKTRACE_SUPPORT
119 config LOCKDEP_SUPPORT
122 config HAVE_LATENCYTOP_SUPPORT
126 config ARCH_HAS_ILOG2_U32
129 config ARCH_HAS_ILOG2_U64
132 config ARCH_NO_VIRT_TO_BUS
135 config ARCH_HAS_DEFAULT_IDLE
141 source "init/Kconfig"
143 source "kernel/Kconfig.freezer"
159 select CPU_HAS_INTEVT
164 select CPU_HAS_INTEVT
166 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
167 select CPU_HAS_FPU if !CPU_SH4AL_DSP
190 select ARCH_SUSPEND_POSSIBLE
195 prompt "Processor sub-type selection"
201 # SH-2 Processor Support
203 config CPU_SUBTYPE_SH7619
204 bool "Support SH7619 processor"
206 select SYS_SUPPORTS_CMT
208 # SH-2A Processor Support
210 config CPU_SUBTYPE_SH7201
211 bool "Support SH7201 processor"
215 config CPU_SUBTYPE_SH7203
216 bool "Support SH7203 processor"
219 select SYS_SUPPORTS_CMT
221 config CPU_SUBTYPE_SH7206
222 bool "Support SH7206 processor"
224 select SYS_SUPPORTS_CMT
226 config CPU_SUBTYPE_SH7263
227 bool "Support SH7263 processor"
230 select SYS_SUPPORTS_CMT
232 config CPU_SUBTYPE_MXG
233 bool "Support MX-G processor"
236 Select MX-G if running on an R8A03022BG part.
238 # SH-3 Processor Support
240 config CPU_SUBTYPE_SH7705
241 bool "Support SH7705 processor"
244 config CPU_SUBTYPE_SH7706
245 bool "Support SH7706 processor"
248 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
250 config CPU_SUBTYPE_SH7707
251 bool "Support SH7707 processor"
254 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
256 config CPU_SUBTYPE_SH7708
257 bool "Support SH7708 processor"
260 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
261 if you have a 100 Mhz SH-3 HD6417708R CPU.
263 config CPU_SUBTYPE_SH7709
264 bool "Support SH7709 processor"
267 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
269 config CPU_SUBTYPE_SH7710
270 bool "Support SH7710 processor"
274 Select SH7710 if you have a SH3-DSP SH7710 CPU.
276 config CPU_SUBTYPE_SH7712
277 bool "Support SH7712 processor"
281 Select SH7712 if you have a SH3-DSP SH7712 CPU.
283 config CPU_SUBTYPE_SH7720
284 bool "Support SH7720 processor"
288 Select SH7720 if you have a SH3-DSP SH7720 CPU.
290 config CPU_SUBTYPE_SH7721
291 bool "Support SH7721 processor"
295 Select SH7721 if you have a SH3-DSP SH7721 CPU.
297 # SH-4 Processor Support
299 config CPU_SUBTYPE_SH7750
300 bool "Support SH7750 processor"
303 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
305 config CPU_SUBTYPE_SH7091
306 bool "Support SH7091 processor"
309 Select SH7091 if you have an SH-4 based Sega device (such as
310 the Dreamcast, Naomi, and Naomi 2).
312 config CPU_SUBTYPE_SH7750R
313 bool "Support SH7750R processor"
316 config CPU_SUBTYPE_SH7750S
317 bool "Support SH7750S processor"
320 config CPU_SUBTYPE_SH7751
321 bool "Support SH7751 processor"
324 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
325 or if you have a HD6417751R CPU.
327 config CPU_SUBTYPE_SH7751R
328 bool "Support SH7751R processor"
331 config CPU_SUBTYPE_SH7760
332 bool "Support SH7760 processor"
335 config CPU_SUBTYPE_SH4_202
336 bool "Support SH4-202 processor"
339 # SH-4A Processor Support
341 config CPU_SUBTYPE_SH7723
342 bool "Support SH7723 processor"
346 select ARCH_SPARSEMEM_ENABLE
347 select SYS_SUPPORTS_CMT
349 Select SH7723 if you have an SH-MobileR2 CPU.
351 config CPU_SUBTYPE_SH7724
352 bool "Support SH7724 processor"
356 select ARCH_SPARSEMEM_ENABLE
357 select SYS_SUPPORTS_CMT
359 Select SH7724 if you have an SH-MobileR2R CPU.
361 config CPU_SUBTYPE_SH7763
362 bool "Support SH7763 processor"
365 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
367 config CPU_SUBTYPE_SH7770
368 bool "Support SH7770 processor"
371 config CPU_SUBTYPE_SH7780
372 bool "Support SH7780 processor"
375 config CPU_SUBTYPE_SH7785
376 bool "Support SH7785 processor"
379 select ARCH_SPARSEMEM_ENABLE
380 select SYS_SUPPORTS_NUMA
382 config CPU_SUBTYPE_SH7786
383 bool "Support SH7786 processor"
386 select CPU_HAS_PTEAEX
387 select ARCH_SPARSEMEM_ENABLE
388 select SYS_SUPPORTS_NUMA
390 config CPU_SUBTYPE_SHX3
391 bool "Support SH-X3 processor"
394 select ARCH_SPARSEMEM_ENABLE
395 select SYS_SUPPORTS_NUMA
396 select SYS_SUPPORTS_SMP
397 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
399 # SH4AL-DSP Processor Support
401 config CPU_SUBTYPE_SH7343
402 bool "Support SH7343 processor"
405 select SYS_SUPPORTS_CMT
407 config CPU_SUBTYPE_SH7722
408 bool "Support SH7722 processor"
412 select ARCH_SPARSEMEM_ENABLE
413 select SYS_SUPPORTS_NUMA
414 select SYS_SUPPORTS_CMT
416 config CPU_SUBTYPE_SH7366
417 bool "Support SH7366 processor"
421 select ARCH_SPARSEMEM_ENABLE
422 select SYS_SUPPORTS_NUMA
423 select SYS_SUPPORTS_CMT
432 prompt "Processor sub-type selection"
434 # SH-5 Processor Support
436 config CPU_SUBTYPE_SH5_101
437 bool "Support SH5-101 processor"
440 config CPU_SUBTYPE_SH5_103
441 bool "Support SH5-103 processor"
448 source "arch/sh/mm/Kconfig"
450 source "arch/sh/Kconfig.cpu"
452 source "arch/sh/boards/Kconfig"
454 menu "Timer and clock configuration"
457 bool "TMU timer support"
458 depends on CPU_SH3 || CPU_SH4
461 select GENERIC_CLOCKEVENTS
463 This enables the use of the TMU as the system timer.
466 bool "CMT timer support"
467 depends on SYS_SUPPORTS_CMT && CPU_SH2
470 This enables the use of the CMT as the system timer.
473 # Support for the new-style CMT driver. This will replace SH_CMT
474 # once its other dependencies are merged.
477 bool "CMT clockevents driver"
478 depends on SYS_SUPPORTS_CMT && !SH_CMT
479 select GENERIC_CLOCKEVENTS
483 bool "MTU2 timer support"
484 depends on CPU_SH2A && !GENERIC_TIME
487 This enables the use of the MTU2 as the system timer.
491 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
493 default "86" if CPU_SUBTYPE_SH7619
494 default "140" if CPU_SUBTYPE_SH7206
495 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
496 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
497 default "238" if CPU_SUBTYPE_MXG
501 int "Peripheral clock frequency (in Hz)"
502 default "27000000" if CPU_SUBTYPE_SH7343
503 default "31250000" if CPU_SUBTYPE_SH7619
504 default "32000000" if CPU_SUBTYPE_SH7722
505 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
506 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
507 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
508 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
510 default "41666666" if CPU_SUBTYPE_SH7724
511 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
512 default "66000000" if CPU_SUBTYPE_SH4_202
515 This option is used to specify the peripheral clock frequency.
516 This is necessary for determining the reference clock value on
517 platforms lacking an RTC.
520 int "CPU Mode Pin Setting"
522 default 6 if CPU_SUBTYPE_SH7206
523 default 5 if CPU_SUBTYPE_SH7619
526 MD2 - MD0 pin setting.
528 source "kernel/time/Kconfig"
532 menu "CPU Frequency scaling"
534 source "drivers/cpufreq/Kconfig"
537 tristate "SuperH CPU Frequency driver"
539 select CPU_FREQ_TABLE
541 This adds the cpufreq driver for SuperH. Any CPU that supports
542 clock rate rounding through the clock framework can use this
543 driver. While it will make the kernel slightly larger, this is
544 harmless for CPUs that don't support rate rounding. The driver
545 will also generate a notice in the boot log before disabling
546 itself if the CPU in question is not capable of rate rounding.
548 For details, take a look at <file:Documentation/cpu-freq>.
554 source "arch/sh/drivers/Kconfig"
558 menu "Kernel features"
560 source kernel/Kconfig.hz
563 bool "kexec system call (EXPERIMENTAL)"
564 depends on SUPERH32 && EXPERIMENTAL && MMU
566 kexec is a system call that implements the ability to shutdown your
567 current kernel, and to start another kernel. It is like a reboot
568 but it is independent of the system firmware. And like a reboot
569 you can start any kernel with it, not just Linux.
571 The name comes from the similarity to the exec system call.
573 It is an ongoing process to be certain the hardware in a machine
574 is properly shutdown, so do not be surprised if this code does not
575 initially work for you. It may help to enable device hotplugging
576 support. As of this writing the exact hardware interface is
577 strongly in flux, so no good recommendation can be made.
580 bool "kernel crash dumps (EXPERIMENTAL)"
581 depends on SUPERH32 && EXPERIMENTAL
583 Generate crash dump after being started by kexec.
584 This should be normally only set in special crash dump kernels
585 which are loaded in the main kernel with kexec-tools into
586 a specially reserved region and then later executed after
587 a crash by kdump/kexec. The crash dump kernel must be compiled
588 to a memory address not used by the main kernel using
591 For more details see Documentation/kdump/kdump.txt
594 bool "kexec jump (EXPERIMENTAL)"
595 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
597 Jump between original kernel and kexeced kernel and invoke
601 bool "Enable seccomp to safely compute untrusted bytecode"
604 This kernel feature is useful for number crunching applications
605 that may need to compute untrusted bytecode during their
606 execution. By using pipes or other transports made available to
607 the process as file descriptors supporting the read/write
608 syscalls, it's possible to isolate those applications in
609 their own address space using seccomp. Once seccomp is
610 enabled via prctl, it cannot be disabled and the task is only
611 allowed to execute a few safe syscalls defined by each seccomp
617 bool "Symmetric multi-processing support"
618 depends on SYS_SUPPORTS_SMP
619 select USE_GENERIC_SMP_HELPERS
621 This enables support for systems with more than one CPU. If you have
622 a system with only one CPU, like most personal computers, say N. If
623 you have a system with more than one CPU, say Y.
625 If you say N here, the kernel will run on single and multiprocessor
626 machines, but will use only one CPU of a multiprocessor machine. If
627 you say Y here, the kernel will run on many, but not all,
628 singleprocessor machines. On a singleprocessor machine, the kernel
629 will run faster if you say N here.
631 People using multiprocessor machines who say Y here should also say
632 Y to "Enhanced Real Time Clock Support", below.
634 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
635 available at <http://www.tldp.org/docs.html#howto>.
637 If you don't know what to do here, say N.
640 int "Maximum number of CPUs (2-32)"
643 default "4" if CPU_SHX3
646 This allows you to specify the maximum number of CPUs which this
647 kernel will support. The maximum supported value is 32 and the
648 minimum value which makes sense is 2.
650 This is purely to save memory - each supported CPU adds
651 approximately eight kilobytes to the kernel image.
653 source "kernel/Kconfig.preempt"
657 depends on !SMP && SUPERH32
659 This enables support for gUSA (general UserSpace Atomicity).
660 This is the default implementation for both UP and non-ll/sc
661 CPUs, and is used by the libc, amongst others.
663 For additional information, design information can be found
664 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
666 This should only be disabled for special cases where alternate
667 atomicity implementations exist.
670 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
671 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
673 Enabling this option will allow the kernel to implement some
674 atomic operations using a software implementation of load-locked/
675 store-conditional (LLSC). On machines which do not have hardware
676 LLSC, this should be more efficient than the other alternative of
677 disabling interrupts around the atomic sequence.
683 config ZERO_PAGE_OFFSET
684 hex "Zero page offset"
685 default "0x00004000" if SH_SH03
686 default "0x00010000" if PAGE_SIZE_64KB
687 default "0x00002000" if PAGE_SIZE_8KB
690 This sets the default offset of zero page.
692 config BOOT_LINK_OFFSET
693 hex "Link address offset for booting"
696 This option allows you to set the link address offset of the zImage.
697 This can be useful if you are on a board which has a small amount of
701 bool "Wakeup UBC on startup"
702 depends on CPU_SH4 && !CPU_SH4A
704 Selecting this option will wakeup the User Break Controller (UBC) on
705 startup. Although the UBC is left in an awake state when the processor
706 comes up, some boot loaders misbehave by putting the UBC to sleep in a
707 power saving state, which causes issues with things like ptrace().
712 bool "Default bootloader kernel arguments"
715 string "Initial kernel command string"
716 depends on CMDLINE_BOOL
717 default "console=ttySC1,115200"
724 tristate "SuperHyway Bus support"
725 depends on CPU_SUBTYPE_SH4_202
728 bool "Maple Bus support"
729 depends on SH_DREAMCAST
731 The Maple Bus is SEGA's serial communication bus for peripherals
732 on the Dreamcast. Without this bus support you won't be able to
733 get your Dreamcast keyboard etc to work, so most users
734 probably want to say 'Y' here, unless you are only using the
735 Dreamcast with a serial line terminal or a remote network
738 source "arch/sh/drivers/pci/Kconfig"
740 source "drivers/pci/pcie/Kconfig"
742 source "drivers/pci/Kconfig"
744 source "drivers/pcmcia/Kconfig"
746 source "drivers/pci/hotplug/Kconfig"
750 menu "Executable file formats"
752 source "fs/Kconfig.binfmt"
756 menu "Power management options (EXPERIMENTAL)"
757 depends on EXPERIMENTAL
759 source "kernel/power/Kconfig"
761 source "drivers/cpuidle/Kconfig"
767 source "drivers/Kconfig"
771 source "arch/sh/Kconfig.debug"
773 source "security/Kconfig"
775 source "crypto/Kconfig"