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 driver"
467 depends on SYS_SUPPORTS_CMT
469 select GENERIC_CLOCKEVENTS
472 This enables build of the CMT timer driver.
475 bool "MTU2 timer support"
476 depends on CPU_SH2A && !GENERIC_TIME
479 This enables the use of the MTU2 as the system timer.
483 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
485 default "86" if CPU_SUBTYPE_SH7619
486 default "140" if CPU_SUBTYPE_SH7206
487 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
488 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
489 default "238" if CPU_SUBTYPE_MXG
493 int "Peripheral clock frequency (in Hz)"
494 default "27000000" if CPU_SUBTYPE_SH7343
495 default "31250000" if CPU_SUBTYPE_SH7619
496 default "32000000" if CPU_SUBTYPE_SH7722
497 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
498 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
499 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
500 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
502 default "41666666" if CPU_SUBTYPE_SH7724
503 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
504 default "66000000" if CPU_SUBTYPE_SH4_202
507 This option is used to specify the peripheral clock frequency.
508 This is necessary for determining the reference clock value on
509 platforms lacking an RTC.
512 int "CPU Mode Pin Setting"
514 default 6 if CPU_SUBTYPE_SH7206
515 default 5 if CPU_SUBTYPE_SH7619
518 MD2 - MD0 pin setting.
520 source "kernel/time/Kconfig"
524 menu "CPU Frequency scaling"
526 source "drivers/cpufreq/Kconfig"
529 tristate "SuperH CPU Frequency driver"
531 select CPU_FREQ_TABLE
533 This adds the cpufreq driver for SuperH. Any CPU that supports
534 clock rate rounding through the clock framework can use this
535 driver. While it will make the kernel slightly larger, this is
536 harmless for CPUs that don't support rate rounding. The driver
537 will also generate a notice in the boot log before disabling
538 itself if the CPU in question is not capable of rate rounding.
540 For details, take a look at <file:Documentation/cpu-freq>.
546 source "arch/sh/drivers/Kconfig"
550 menu "Kernel features"
552 source kernel/Kconfig.hz
555 bool "kexec system call (EXPERIMENTAL)"
556 depends on SUPERH32 && EXPERIMENTAL && MMU
558 kexec is a system call that implements the ability to shutdown your
559 current kernel, and to start another kernel. It is like a reboot
560 but it is independent of the system firmware. And like a reboot
561 you can start any kernel with it, not just Linux.
563 The name comes from the similarity to the exec system call.
565 It is an ongoing process to be certain the hardware in a machine
566 is properly shutdown, so do not be surprised if this code does not
567 initially work for you. It may help to enable device hotplugging
568 support. As of this writing the exact hardware interface is
569 strongly in flux, so no good recommendation can be made.
572 bool "kernel crash dumps (EXPERIMENTAL)"
573 depends on SUPERH32 && EXPERIMENTAL
575 Generate crash dump after being started by kexec.
576 This should be normally only set in special crash dump kernels
577 which are loaded in the main kernel with kexec-tools into
578 a specially reserved region and then later executed after
579 a crash by kdump/kexec. The crash dump kernel must be compiled
580 to a memory address not used by the main kernel using
583 For more details see Documentation/kdump/kdump.txt
586 bool "kexec jump (EXPERIMENTAL)"
587 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
589 Jump between original kernel and kexeced kernel and invoke
593 bool "Enable seccomp to safely compute untrusted bytecode"
596 This kernel feature is useful for number crunching applications
597 that may need to compute untrusted bytecode during their
598 execution. By using pipes or other transports made available to
599 the process as file descriptors supporting the read/write
600 syscalls, it's possible to isolate those applications in
601 their own address space using seccomp. Once seccomp is
602 enabled via prctl, it cannot be disabled and the task is only
603 allowed to execute a few safe syscalls defined by each seccomp
609 bool "Symmetric multi-processing support"
610 depends on SYS_SUPPORTS_SMP
611 select USE_GENERIC_SMP_HELPERS
613 This enables support for systems with more than one CPU. If you have
614 a system with only one CPU, like most personal computers, say N. If
615 you have a system with more than one CPU, say Y.
617 If you say N here, the kernel will run on single and multiprocessor
618 machines, but will use only one CPU of a multiprocessor machine. If
619 you say Y here, the kernel will run on many, but not all,
620 singleprocessor machines. On a singleprocessor machine, the kernel
621 will run faster if you say N here.
623 People using multiprocessor machines who say Y here should also say
624 Y to "Enhanced Real Time Clock Support", below.
626 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
627 available at <http://www.tldp.org/docs.html#howto>.
629 If you don't know what to do here, say N.
632 int "Maximum number of CPUs (2-32)"
635 default "4" if CPU_SHX3
638 This allows you to specify the maximum number of CPUs which this
639 kernel will support. The maximum supported value is 32 and the
640 minimum value which makes sense is 2.
642 This is purely to save memory - each supported CPU adds
643 approximately eight kilobytes to the kernel image.
645 source "kernel/Kconfig.preempt"
649 depends on !SMP && SUPERH32
651 This enables support for gUSA (general UserSpace Atomicity).
652 This is the default implementation for both UP and non-ll/sc
653 CPUs, and is used by the libc, amongst others.
655 For additional information, design information can be found
656 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
658 This should only be disabled for special cases where alternate
659 atomicity implementations exist.
662 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
663 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
665 Enabling this option will allow the kernel to implement some
666 atomic operations using a software implementation of load-locked/
667 store-conditional (LLSC). On machines which do not have hardware
668 LLSC, this should be more efficient than the other alternative of
669 disabling interrupts around the atomic sequence.
675 config ZERO_PAGE_OFFSET
676 hex "Zero page offset"
677 default "0x00004000" if SH_SH03
678 default "0x00010000" if PAGE_SIZE_64KB
679 default "0x00002000" if PAGE_SIZE_8KB
682 This sets the default offset of zero page.
684 config BOOT_LINK_OFFSET
685 hex "Link address offset for booting"
688 This option allows you to set the link address offset of the zImage.
689 This can be useful if you are on a board which has a small amount of
693 bool "Wakeup UBC on startup"
694 depends on CPU_SH4 && !CPU_SH4A
696 Selecting this option will wakeup the User Break Controller (UBC) on
697 startup. Although the UBC is left in an awake state when the processor
698 comes up, some boot loaders misbehave by putting the UBC to sleep in a
699 power saving state, which causes issues with things like ptrace().
704 bool "Default bootloader kernel arguments"
707 string "Initial kernel command string"
708 depends on CMDLINE_BOOL
709 default "console=ttySC1,115200"
716 tristate "SuperHyway Bus support"
717 depends on CPU_SUBTYPE_SH4_202
720 bool "Maple Bus support"
721 depends on SH_DREAMCAST
723 The Maple Bus is SEGA's serial communication bus for peripherals
724 on the Dreamcast. Without this bus support you won't be able to
725 get your Dreamcast keyboard etc to work, so most users
726 probably want to say 'Y' here, unless you are only using the
727 Dreamcast with a serial line terminal or a remote network
730 source "arch/sh/drivers/pci/Kconfig"
732 source "drivers/pci/pcie/Kconfig"
734 source "drivers/pci/Kconfig"
736 source "drivers/pcmcia/Kconfig"
738 source "drivers/pci/hotplug/Kconfig"
742 menu "Executable file formats"
744 source "fs/Kconfig.binfmt"
748 menu "Power management options (EXPERIMENTAL)"
749 depends on EXPERIMENTAL
751 source "kernel/power/Kconfig"
753 source "drivers/cpuidle/Kconfig"
759 source "drivers/Kconfig"
763 source "arch/sh/Kconfig.debug"
765 source "security/Kconfig"
767 source "crypto/Kconfig"