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
37 default "arch/sh/configs/shx3_defconfig" if SUPERH32
38 default "arch/sh/configs/cayman_defconfig" if SUPERH64
40 config RWSEM_GENERIC_SPINLOCK
43 config RWSEM_XCHGADD_ALGORITHM
48 depends on BUG && SUPERH32
50 config GENERIC_FIND_NEXT_BIT
53 config GENERIC_HWEIGHT
56 config GENERIC_HARDIRQS
59 config GENERIC_HARDIRQS_NO__DO_IRQ
62 config GENERIC_IRQ_PROBE
68 config GENERIC_CALIBRATE_DELAY
77 config GENERIC_CLOCKEVENTS
80 config GENERIC_CLOCKEVENTS_BROADCAST
83 config GENERIC_LOCKBREAK
85 depends on SMP && PREEMPT
87 config SYS_SUPPORTS_PM
91 config ARCH_SUSPEND_POSSIBLE
94 config ARCH_HIBERNATION_POSSIBLE
97 config SYS_SUPPORTS_APM_EMULATION
99 select ARCH_SUSPEND_POSSIBLE
101 config SYS_SUPPORTS_SMP
104 config SYS_SUPPORTS_NUMA
107 config SYS_SUPPORTS_PCI
110 config SYS_SUPPORTS_CMT
113 config STACKTRACE_SUPPORT
116 config LOCKDEP_SUPPORT
119 config HAVE_LATENCYTOP_SUPPORT
123 config ARCH_HAS_ILOG2_U32
126 config ARCH_HAS_ILOG2_U64
129 config ARCH_NO_VIRT_TO_BUS
135 source "init/Kconfig"
137 source "kernel/Kconfig.freezer"
153 select CPU_HAS_INTEVT
158 select CPU_HAS_INTEVT
160 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
161 select CPU_HAS_FPU if !CPU_SH4AL_DSP
184 select ARCH_SUSPEND_POSSIBLE
187 prompt "Processor sub-type selection"
193 # SH-2 Processor Support
195 config CPU_SUBTYPE_SH7619
196 bool "Support SH7619 processor"
198 select SYS_SUPPORTS_CMT
200 # SH-2A Processor Support
202 config CPU_SUBTYPE_SH7201
203 bool "Support SH7201 processor"
207 config CPU_SUBTYPE_SH7203
208 bool "Support SH7203 processor"
211 select SYS_SUPPORTS_CMT
213 config CPU_SUBTYPE_SH7206
214 bool "Support SH7206 processor"
216 select SYS_SUPPORTS_CMT
218 config CPU_SUBTYPE_SH7263
219 bool "Support SH7263 processor"
222 select SYS_SUPPORTS_CMT
224 config CPU_SUBTYPE_MXG
225 bool "Support MX-G processor"
228 Select MX-G if running on an R8A03022BG part.
230 # SH-3 Processor Support
232 config CPU_SUBTYPE_SH7705
233 bool "Support SH7705 processor"
236 config CPU_SUBTYPE_SH7706
237 bool "Support SH7706 processor"
240 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
242 config CPU_SUBTYPE_SH7707
243 bool "Support SH7707 processor"
246 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
248 config CPU_SUBTYPE_SH7708
249 bool "Support SH7708 processor"
252 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
253 if you have a 100 Mhz SH-3 HD6417708R CPU.
255 config CPU_SUBTYPE_SH7709
256 bool "Support SH7709 processor"
259 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
261 config CPU_SUBTYPE_SH7710
262 bool "Support SH7710 processor"
266 Select SH7710 if you have a SH3-DSP SH7710 CPU.
268 config CPU_SUBTYPE_SH7712
269 bool "Support SH7712 processor"
273 Select SH7712 if you have a SH3-DSP SH7712 CPU.
275 config CPU_SUBTYPE_SH7720
276 bool "Support SH7720 processor"
280 Select SH7720 if you have a SH3-DSP SH7720 CPU.
282 config CPU_SUBTYPE_SH7721
283 bool "Support SH7721 processor"
287 Select SH7721 if you have a SH3-DSP SH7721 CPU.
289 # SH-4 Processor Support
291 config CPU_SUBTYPE_SH7750
292 bool "Support SH7750 processor"
295 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
297 config CPU_SUBTYPE_SH7091
298 bool "Support SH7091 processor"
301 Select SH7091 if you have an SH-4 based Sega device (such as
302 the Dreamcast, Naomi, and Naomi 2).
304 config CPU_SUBTYPE_SH7750R
305 bool "Support SH7750R processor"
308 config CPU_SUBTYPE_SH7750S
309 bool "Support SH7750S processor"
312 config CPU_SUBTYPE_SH7751
313 bool "Support SH7751 processor"
316 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
317 or if you have a HD6417751R CPU.
319 config CPU_SUBTYPE_SH7751R
320 bool "Support SH7751R processor"
323 config CPU_SUBTYPE_SH7760
324 bool "Support SH7760 processor"
327 config CPU_SUBTYPE_SH4_202
328 bool "Support SH4-202 processor"
331 # SH-4A Processor Support
333 config CPU_SUBTYPE_SH7723
334 bool "Support SH7723 processor"
338 select ARCH_SPARSEMEM_ENABLE
339 select SYS_SUPPORTS_CMT
341 Select SH7723 if you have an SH-MobileR2 CPU.
343 config CPU_SUBTYPE_SH7763
344 bool "Support SH7763 processor"
347 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
349 config CPU_SUBTYPE_SH7770
350 bool "Support SH7770 processor"
353 config CPU_SUBTYPE_SH7780
354 bool "Support SH7780 processor"
357 config CPU_SUBTYPE_SH7785
358 bool "Support SH7785 processor"
361 select ARCH_SPARSEMEM_ENABLE
362 select SYS_SUPPORTS_NUMA
364 config CPU_SUBTYPE_SH7786
365 bool "Support SH7786 processor"
368 select CPU_HAS_PTEAEX
369 select ARCH_SPARSEMEM_ENABLE
370 select SYS_SUPPORTS_NUMA
372 config CPU_SUBTYPE_SHX3
373 bool "Support SH-X3 processor"
376 select ARCH_SPARSEMEM_ENABLE
377 select SYS_SUPPORTS_NUMA
378 select SYS_SUPPORTS_SMP
379 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
381 # SH4AL-DSP Processor Support
383 config CPU_SUBTYPE_SH7343
384 bool "Support SH7343 processor"
387 select SYS_SUPPORTS_CMT
389 config CPU_SUBTYPE_SH7722
390 bool "Support SH7722 processor"
394 select ARCH_SPARSEMEM_ENABLE
395 select SYS_SUPPORTS_NUMA
396 select SYS_SUPPORTS_CMT
398 config CPU_SUBTYPE_SH7366
399 bool "Support SH7366 processor"
403 select ARCH_SPARSEMEM_ENABLE
404 select SYS_SUPPORTS_NUMA
405 select SYS_SUPPORTS_CMT
407 # SH-5 Processor Support
409 config CPU_SUBTYPE_SH5_101
410 bool "Support SH5-101 processor"
413 config CPU_SUBTYPE_SH5_103
414 bool "Support SH5-103 processor"
419 source "arch/sh/mm/Kconfig"
421 source "arch/sh/Kconfig.cpu"
423 source "arch/sh/boards/Kconfig"
425 menu "Timer and clock configuration"
428 bool "TMU timer support"
429 depends on CPU_SH3 || CPU_SH4
432 select GENERIC_CLOCKEVENTS
434 This enables the use of the TMU as the system timer.
437 bool "CMT timer support"
438 depends on SYS_SUPPORTS_CMT && CPU_SH2
441 This enables the use of the CMT as the system timer.
444 # Support for the new-style CMT driver. This will replace SH_CMT
445 # once its other dependencies are merged.
448 bool "CMT clockevents driver"
449 depends on SYS_SUPPORTS_CMT && !SH_CMT
450 select GENERIC_CLOCKEVENTS
453 bool "MTU2 timer support"
457 This enables the use of the MTU2 as the system timer.
461 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
463 default "86" if CPU_SUBTYPE_SH7619
464 default "140" if CPU_SUBTYPE_SH7206
465 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
466 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
467 default "238" if CPU_SUBTYPE_MXG
471 int "Peripheral clock frequency (in Hz)"
472 default "27000000" if CPU_SUBTYPE_SH7343
473 default "31250000" if CPU_SUBTYPE_SH7619
474 default "32000000" if CPU_SUBTYPE_SH7722
475 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
476 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
477 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
478 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
480 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
481 default "66000000" if CPU_SUBTYPE_SH4_202
484 This option is used to specify the peripheral clock frequency.
485 This is necessary for determining the reference clock value on
486 platforms lacking an RTC.
489 int "CPU Mode Pin Setting"
491 default 6 if CPU_SUBTYPE_SH7206
492 default 5 if CPU_SUBTYPE_SH7619
495 MD2 - MD0 pin setting.
497 source "kernel/time/Kconfig"
501 menu "CPU Frequency scaling"
503 source "drivers/cpufreq/Kconfig"
506 tristate "SuperH CPU Frequency driver"
508 select CPU_FREQ_TABLE
510 This adds the cpufreq driver for SuperH. Any CPU that supports
511 clock rate rounding through the clock framework can use this
512 driver. While it will make the kernel slightly larger, this is
513 harmless for CPUs that don't support rate rounding. The driver
514 will also generate a notice in the boot log before disabling
515 itself if the CPU in question is not capable of rate rounding.
517 For details, take a look at <file:Documentation/cpu-freq>.
523 source "arch/sh/drivers/Kconfig"
527 menu "Kernel features"
529 source kernel/Kconfig.hz
532 bool "kexec system call (EXPERIMENTAL)"
533 depends on SUPERH32 && EXPERIMENTAL
535 kexec is a system call that implements the ability to shutdown your
536 current kernel, and to start another kernel. It is like a reboot
537 but it is independent of the system firmware. And like a reboot
538 you can start any kernel with it, not just Linux.
540 The name comes from the similarity to the exec system call.
542 It is an ongoing process to be certain the hardware in a machine
543 is properly shutdown, so do not be surprised if this code does not
544 initially work for you. It may help to enable device hotplugging
545 support. As of this writing the exact hardware interface is
546 strongly in flux, so no good recommendation can be made.
549 bool "kernel crash dumps (EXPERIMENTAL)"
550 depends on SUPERH32 && EXPERIMENTAL
552 Generate crash dump after being started by kexec.
553 This should be normally only set in special crash dump kernels
554 which are loaded in the main kernel with kexec-tools into
555 a specially reserved region and then later executed after
556 a crash by kdump/kexec. The crash dump kernel must be compiled
557 to a memory address not used by the main kernel using
560 For more details see Documentation/kdump/kdump.txt
563 bool "kexec jump (EXPERIMENTAL)"
564 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
566 Jump between original kernel and kexeced kernel and invoke
570 bool "Enable seccomp to safely compute untrusted bytecode"
573 This kernel feature is useful for number crunching applications
574 that may need to compute untrusted bytecode during their
575 execution. By using pipes or other transports made available to
576 the process as file descriptors supporting the read/write
577 syscalls, it's possible to isolate those applications in
578 their own address space using seccomp. Once seccomp is
579 enabled via prctl, it cannot be disabled and the task is only
580 allowed to execute a few safe syscalls defined by each seccomp
586 bool "Symmetric multi-processing support"
587 depends on SYS_SUPPORTS_SMP
588 select USE_GENERIC_SMP_HELPERS
590 This enables support for systems with more than one CPU. If you have
591 a system with only one CPU, like most personal computers, say N. If
592 you have a system with more than one CPU, say Y.
594 If you say N here, the kernel will run on single and multiprocessor
595 machines, but will use only one CPU of a multiprocessor machine. If
596 you say Y here, the kernel will run on many, but not all,
597 singleprocessor machines. On a singleprocessor machine, the kernel
598 will run faster if you say N here.
600 People using multiprocessor machines who say Y here should also say
601 Y to "Enhanced Real Time Clock Support", below.
603 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
604 available at <http://www.tldp.org/docs.html#howto>.
606 If you don't know what to do here, say N.
609 int "Maximum number of CPUs (2-32)"
612 default "4" if CPU_SHX3
615 This allows you to specify the maximum number of CPUs which this
616 kernel will support. The maximum supported value is 32 and the
617 minimum value which makes sense is 2.
619 This is purely to save memory - each supported CPU adds
620 approximately eight kilobytes to the kernel image.
622 source "kernel/Kconfig.preempt"
626 depends on !SMP && SUPERH32
628 This enables support for gUSA (general UserSpace Atomicity).
629 This is the default implementation for both UP and non-ll/sc
630 CPUs, and is used by the libc, amongst others.
632 For additional information, design information can be found
633 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
635 This should only be disabled for special cases where alternate
636 atomicity implementations exist.
639 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
640 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
642 Enabling this option will allow the kernel to implement some
643 atomic operations using a software implementation of load-locked/
644 store-conditional (LLSC). On machines which do not have hardware
645 LLSC, this should be more efficient than the other alternative of
646 disabling interrupts around the atomic sequence.
652 config ZERO_PAGE_OFFSET
653 hex "Zero page offset"
654 default "0x00004000" if SH_SH03
655 default "0x00010000" if PAGE_SIZE_64KB
656 default "0x00002000" if PAGE_SIZE_8KB
659 This sets the default offset of zero page.
661 config BOOT_LINK_OFFSET
662 hex "Link address offset for booting"
665 This option allows you to set the link address offset of the zImage.
666 This can be useful if you are on a board which has a small amount of
670 bool "Wakeup UBC on startup"
671 depends on CPU_SH4 && !CPU_SH4A
673 Selecting this option will wakeup the User Break Controller (UBC) on
674 startup. Although the UBC is left in an awake state when the processor
675 comes up, some boot loaders misbehave by putting the UBC to sleep in a
676 power saving state, which causes issues with things like ptrace().
681 bool "Default bootloader kernel arguments"
684 string "Initial kernel command string"
685 depends on CMDLINE_BOOL
686 default "console=ttySC1,115200"
693 tristate "SuperHyway Bus support"
694 depends on CPU_SUBTYPE_SH4_202
697 bool "Maple Bus support"
698 depends on SH_DREAMCAST
700 The Maple Bus is SEGA's serial communication bus for peripherals
701 on the Dreamcast. Without this bus support you won't be able to
702 get your Dreamcast keyboard etc to work, so most users
703 probably want to say 'Y' here, unless you are only using the
704 Dreamcast with a serial line terminal or a remote network
707 source "arch/sh/drivers/pci/Kconfig"
709 source "drivers/pci/pcie/Kconfig"
711 source "drivers/pci/Kconfig"
713 source "drivers/pcmcia/Kconfig"
715 source "drivers/pci/hotplug/Kconfig"
719 menu "Executable file formats"
721 source "fs/Kconfig.binfmt"
725 menu "Power management options (EXPERIMENTAL)"
726 depends on EXPERIMENTAL
728 source "kernel/power/Kconfig"
730 source "drivers/cpuidle/Kconfig"
736 source "drivers/Kconfig"
740 source "arch/sh/Kconfig.debug"
742 source "security/Kconfig"
744 source "crypto/Kconfig"