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
20 The SuperH is a RISC processor targeted for use in embedded systems
21 and consumer electronics; it was also used in the Sega Dreamcast
22 gaming console. The SuperH port has a home page at
23 <http://www.linux-sh.org/>.
28 select HAVE_KRETPROBES
29 select HAVE_FUNCTION_TRACER
30 select HAVE_FTRACE_MCOUNT_RECORD
31 select HAVE_DYNAMIC_FTRACE
33 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_CMOS_UPDATE
88 depends on SH_SH03 || SH_DREAMCAST
90 config GENERIC_LOCKBREAK
92 depends on SMP && PREEMPT
94 config SYS_SUPPORTS_PM
98 config ARCH_SUSPEND_POSSIBLE
101 config ARCH_HIBERNATION_POSSIBLE
104 config SYS_SUPPORTS_APM_EMULATION
106 select ARCH_SUSPEND_POSSIBLE
108 config SYS_SUPPORTS_SMP
111 config SYS_SUPPORTS_NUMA
114 config SYS_SUPPORTS_PCI
117 config SYS_SUPPORTS_CMT
120 config SYS_SUPPORTS_MTU2
123 config SYS_SUPPORTS_TMU
126 config STACKTRACE_SUPPORT
129 config LOCKDEP_SUPPORT
132 config HAVE_LATENCYTOP_SUPPORT
136 config ARCH_HAS_ILOG2_U32
139 config ARCH_HAS_ILOG2_U64
142 config ARCH_NO_VIRT_TO_BUS
145 config ARCH_HAS_DEFAULT_IDLE
151 source "init/Kconfig"
153 source "kernel/Kconfig.freezer"
169 select CPU_HAS_INTEVT
171 select SYS_SUPPORTS_TMU
175 select CPU_HAS_INTEVT
177 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
178 select CPU_HAS_FPU if !CPU_SH4AL_DSP
179 select SYS_SUPPORTS_TMU
193 select SYS_SUPPORTS_TMU
203 select ARCH_SUSPEND_POSSIBLE
208 prompt "Processor sub-type selection"
214 # SH-2 Processor Support
216 config CPU_SUBTYPE_SH7619
217 bool "Support SH7619 processor"
219 select SYS_SUPPORTS_CMT
221 # SH-2A Processor Support
223 config CPU_SUBTYPE_SH7201
224 bool "Support SH7201 processor"
227 select SYS_SUPPORTS_MTU2
229 config CPU_SUBTYPE_SH7203
230 bool "Support SH7203 processor"
233 select SYS_SUPPORTS_CMT
234 select SYS_SUPPORTS_MTU2
236 config CPU_SUBTYPE_SH7206
237 bool "Support SH7206 processor"
239 select SYS_SUPPORTS_CMT
240 select SYS_SUPPORTS_MTU2
242 config CPU_SUBTYPE_SH7263
243 bool "Support SH7263 processor"
246 select SYS_SUPPORTS_CMT
247 select SYS_SUPPORTS_MTU2
249 config CPU_SUBTYPE_MXG
250 bool "Support MX-G processor"
252 select SYS_SUPPORTS_MTU2
254 Select MX-G if running on an R8A03022BG part.
256 # SH-3 Processor Support
258 config CPU_SUBTYPE_SH7705
259 bool "Support SH7705 processor"
262 config CPU_SUBTYPE_SH7706
263 bool "Support SH7706 processor"
266 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
268 config CPU_SUBTYPE_SH7707
269 bool "Support SH7707 processor"
272 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
274 config CPU_SUBTYPE_SH7708
275 bool "Support SH7708 processor"
278 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
279 if you have a 100 Mhz SH-3 HD6417708R CPU.
281 config CPU_SUBTYPE_SH7709
282 bool "Support SH7709 processor"
285 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
287 config CPU_SUBTYPE_SH7710
288 bool "Support SH7710 processor"
292 Select SH7710 if you have a SH3-DSP SH7710 CPU.
294 config CPU_SUBTYPE_SH7712
295 bool "Support SH7712 processor"
299 Select SH7712 if you have a SH3-DSP SH7712 CPU.
301 config CPU_SUBTYPE_SH7720
302 bool "Support SH7720 processor"
306 Select SH7720 if you have a SH3-DSP SH7720 CPU.
308 config CPU_SUBTYPE_SH7721
309 bool "Support SH7721 processor"
313 Select SH7721 if you have a SH3-DSP SH7721 CPU.
315 # SH-4 Processor Support
317 config CPU_SUBTYPE_SH7750
318 bool "Support SH7750 processor"
321 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
323 config CPU_SUBTYPE_SH7091
324 bool "Support SH7091 processor"
327 Select SH7091 if you have an SH-4 based Sega device (such as
328 the Dreamcast, Naomi, and Naomi 2).
330 config CPU_SUBTYPE_SH7750R
331 bool "Support SH7750R processor"
334 config CPU_SUBTYPE_SH7750S
335 bool "Support SH7750S processor"
338 config CPU_SUBTYPE_SH7751
339 bool "Support SH7751 processor"
342 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
343 or if you have a HD6417751R CPU.
345 config CPU_SUBTYPE_SH7751R
346 bool "Support SH7751R processor"
349 config CPU_SUBTYPE_SH7760
350 bool "Support SH7760 processor"
353 config CPU_SUBTYPE_SH4_202
354 bool "Support SH4-202 processor"
357 # SH-4A Processor Support
359 config CPU_SUBTYPE_SH7723
360 bool "Support SH7723 processor"
364 select ARCH_SPARSEMEM_ENABLE
365 select SYS_SUPPORTS_CMT
367 Select SH7723 if you have an SH-MobileR2 CPU.
369 config CPU_SUBTYPE_SH7724
370 bool "Support SH7724 processor"
374 select ARCH_SPARSEMEM_ENABLE
375 select SYS_SUPPORTS_CMT
377 Select SH7724 if you have an SH-MobileR2R CPU.
379 config CPU_SUBTYPE_SH7763
380 bool "Support SH7763 processor"
383 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
385 config CPU_SUBTYPE_SH7770
386 bool "Support SH7770 processor"
389 config CPU_SUBTYPE_SH7780
390 bool "Support SH7780 processor"
393 config CPU_SUBTYPE_SH7785
394 bool "Support SH7785 processor"
397 select ARCH_SPARSEMEM_ENABLE
398 select SYS_SUPPORTS_NUMA
400 config CPU_SUBTYPE_SH7786
401 bool "Support SH7786 processor"
404 select CPU_HAS_PTEAEX
405 select ARCH_SPARSEMEM_ENABLE
406 select SYS_SUPPORTS_NUMA
408 config CPU_SUBTYPE_SHX3
409 bool "Support SH-X3 processor"
412 select ARCH_SPARSEMEM_ENABLE
413 select SYS_SUPPORTS_NUMA
414 select SYS_SUPPORTS_SMP
415 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
417 # SH4AL-DSP Processor Support
419 config CPU_SUBTYPE_SH7343
420 bool "Support SH7343 processor"
423 select SYS_SUPPORTS_CMT
425 config CPU_SUBTYPE_SH7722
426 bool "Support SH7722 processor"
430 select ARCH_SPARSEMEM_ENABLE
431 select SYS_SUPPORTS_NUMA
432 select SYS_SUPPORTS_CMT
434 config CPU_SUBTYPE_SH7366
435 bool "Support SH7366 processor"
439 select ARCH_SPARSEMEM_ENABLE
440 select SYS_SUPPORTS_NUMA
441 select SYS_SUPPORTS_CMT
450 prompt "Processor sub-type selection"
452 # SH-5 Processor Support
454 config CPU_SUBTYPE_SH5_101
455 bool "Support SH5-101 processor"
458 config CPU_SUBTYPE_SH5_103
459 bool "Support SH5-103 processor"
466 source "arch/sh/mm/Kconfig"
468 source "arch/sh/Kconfig.cpu"
470 source "arch/sh/boards/Kconfig"
472 menu "Timer and clock configuration"
475 bool "TMU timer support"
476 depends on CPU_SH3 || CPU_SH4
479 This enables the use of the TMU as the system timer.
482 bool "TMU timer driver"
483 depends on !SH_TMU && SYS_SUPPORTS_TMU
486 This enables the build of the TMU timer driver.
489 bool "CMT timer driver"
490 depends on SYS_SUPPORTS_CMT
493 This enables build of the CMT timer driver.
496 bool "MTU2 timer driver"
497 depends on SYS_SUPPORTS_MTU2
500 This enables build of the MTU2 timer driver.
504 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
506 default "86" if CPU_SUBTYPE_SH7619
507 default "140" if CPU_SUBTYPE_SH7206
508 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
509 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
510 default "238" if CPU_SUBTYPE_MXG
514 int "Peripheral clock frequency (in Hz)"
515 default "27000000" if CPU_SUBTYPE_SH7343
516 default "31250000" if CPU_SUBTYPE_SH7619
517 default "32000000" if CPU_SUBTYPE_SH7722
518 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
519 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
520 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
521 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
523 default "41666666" if CPU_SUBTYPE_SH7724
524 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
525 default "66000000" if CPU_SUBTYPE_SH4_202
528 This option is used to specify the peripheral clock frequency.
529 This is necessary for determining the reference clock value on
530 platforms lacking an RTC.
533 int "CPU Mode Pin Setting"
535 default 6 if CPU_SUBTYPE_SH7206
536 default 5 if CPU_SUBTYPE_SH7619
539 MD2 - MD0 pin setting.
541 source "kernel/time/Kconfig"
545 menu "CPU Frequency scaling"
547 source "drivers/cpufreq/Kconfig"
550 tristate "SuperH CPU Frequency driver"
552 select CPU_FREQ_TABLE
554 This adds the cpufreq driver for SuperH. Any CPU that supports
555 clock rate rounding through the clock framework can use this
556 driver. While it will make the kernel slightly larger, this is
557 harmless for CPUs that don't support rate rounding. The driver
558 will also generate a notice in the boot log before disabling
559 itself if the CPU in question is not capable of rate rounding.
561 For details, take a look at <file:Documentation/cpu-freq>.
567 source "arch/sh/drivers/Kconfig"
571 menu "Kernel features"
573 source kernel/Kconfig.hz
576 bool "kexec system call (EXPERIMENTAL)"
577 depends on SUPERH32 && EXPERIMENTAL && MMU
579 kexec is a system call that implements the ability to shutdown your
580 current kernel, and to start another kernel. It is like a reboot
581 but it is independent of the system firmware. And like a reboot
582 you can start any kernel with it, not just Linux.
584 The name comes from the similarity to the exec system call.
586 It is an ongoing process to be certain the hardware in a machine
587 is properly shutdown, so do not be surprised if this code does not
588 initially work for you. It may help to enable device hotplugging
589 support. As of this writing the exact hardware interface is
590 strongly in flux, so no good recommendation can be made.
593 bool "kernel crash dumps (EXPERIMENTAL)"
594 depends on SUPERH32 && EXPERIMENTAL
596 Generate crash dump after being started by kexec.
597 This should be normally only set in special crash dump kernels
598 which are loaded in the main kernel with kexec-tools into
599 a specially reserved region and then later executed after
600 a crash by kdump/kexec. The crash dump kernel must be compiled
601 to a memory address not used by the main kernel using
604 For more details see Documentation/kdump/kdump.txt
607 bool "kexec jump (EXPERIMENTAL)"
608 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
610 Jump between original kernel and kexeced kernel and invoke
614 bool "Enable seccomp to safely compute untrusted bytecode"
617 This kernel feature is useful for number crunching applications
618 that may need to compute untrusted bytecode during their
619 execution. By using pipes or other transports made available to
620 the process as file descriptors supporting the read/write
621 syscalls, it's possible to isolate those applications in
622 their own address space using seccomp. Once seccomp is
623 enabled via prctl, it cannot be disabled and the task is only
624 allowed to execute a few safe syscalls defined by each seccomp
630 bool "Symmetric multi-processing support"
631 depends on SYS_SUPPORTS_SMP
632 select USE_GENERIC_SMP_HELPERS
634 This enables support for systems with more than one CPU. If you have
635 a system with only one CPU, like most personal computers, say N. If
636 you have a system with more than one CPU, say Y.
638 If you say N here, the kernel will run on single and multiprocessor
639 machines, but will use only one CPU of a multiprocessor machine. If
640 you say Y here, the kernel will run on many, but not all,
641 singleprocessor machines. On a singleprocessor machine, the kernel
642 will run faster if you say N here.
644 People using multiprocessor machines who say Y here should also say
645 Y to "Enhanced Real Time Clock Support", below.
647 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
648 available at <http://www.tldp.org/docs.html#howto>.
650 If you don't know what to do here, say N.
653 int "Maximum number of CPUs (2-32)"
656 default "4" if CPU_SHX3
659 This allows you to specify the maximum number of CPUs which this
660 kernel will support. The maximum supported value is 32 and the
661 minimum value which makes sense is 2.
663 This is purely to save memory - each supported CPU adds
664 approximately eight kilobytes to the kernel image.
666 source "kernel/Kconfig.preempt"
670 depends on !SMP && SUPERH32
672 This enables support for gUSA (general UserSpace Atomicity).
673 This is the default implementation for both UP and non-ll/sc
674 CPUs, and is used by the libc, amongst others.
676 For additional information, design information can be found
677 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
679 This should only be disabled for special cases where alternate
680 atomicity implementations exist.
683 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
684 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
686 Enabling this option will allow the kernel to implement some
687 atomic operations using a software implementation of load-locked/
688 store-conditional (LLSC). On machines which do not have hardware
689 LLSC, this should be more efficient than the other alternative of
690 disabling interrupts around the atomic sequence.
696 config ZERO_PAGE_OFFSET
697 hex "Zero page offset"
698 default "0x00004000" if SH_SH03
699 default "0x00010000" if PAGE_SIZE_64KB
700 default "0x00002000" if PAGE_SIZE_8KB
703 This sets the default offset of zero page.
705 config BOOT_LINK_OFFSET
706 hex "Link address offset for booting"
707 default "0x00400000" if SH_CAYMAN
710 This option allows you to set the link address offset of the zImage.
711 This can be useful if you are on a board which has a small amount of
715 bool "Wakeup UBC on startup"
716 depends on CPU_SH4 && !CPU_SH4A
718 Selecting this option will wakeup the User Break Controller (UBC) on
719 startup. Although the UBC is left in an awake state when the processor
720 comes up, some boot loaders misbehave by putting the UBC to sleep in a
721 power saving state, which causes issues with things like ptrace().
726 bool "Default bootloader kernel arguments"
729 string "Initial kernel command string"
730 depends on CMDLINE_BOOL
731 default "console=ttySC1,115200"
738 tristate "SuperHyway Bus support"
739 depends on CPU_SUBTYPE_SH4_202
742 bool "Maple Bus support"
743 depends on SH_DREAMCAST
745 The Maple Bus is SEGA's serial communication bus for peripherals
746 on the Dreamcast. Without this bus support you won't be able to
747 get your Dreamcast keyboard etc to work, so most users
748 probably want to say 'Y' here, unless you are only using the
749 Dreamcast with a serial line terminal or a remote network
752 source "arch/sh/drivers/pci/Kconfig"
754 source "drivers/pci/pcie/Kconfig"
756 source "drivers/pci/Kconfig"
758 source "drivers/pcmcia/Kconfig"
760 source "drivers/pci/hotplug/Kconfig"
764 menu "Executable file formats"
766 source "fs/Kconfig.binfmt"
770 menu "Power management options (EXPERIMENTAL)"
771 depends on EXPERIMENTAL
773 source "kernel/power/Kconfig"
775 source "drivers/cpuidle/Kconfig"
781 source "drivers/Kconfig"
785 source "arch/sh/Kconfig.debug"
787 source "security/Kconfig"
789 source "crypto/Kconfig"