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
183 prompt "Processor sub-type selection"
189 # SH-2 Processor Support
191 config CPU_SUBTYPE_SH7619
192 bool "Support SH7619 processor"
194 select SYS_SUPPORTS_CMT
196 # SH-2A Processor Support
198 config CPU_SUBTYPE_SH7201
199 bool "Support SH7201 processor"
203 config CPU_SUBTYPE_SH7203
204 bool "Support SH7203 processor"
207 select SYS_SUPPORTS_CMT
209 config CPU_SUBTYPE_SH7206
210 bool "Support SH7206 processor"
212 select SYS_SUPPORTS_CMT
214 config CPU_SUBTYPE_SH7263
215 bool "Support SH7263 processor"
218 select SYS_SUPPORTS_CMT
220 config CPU_SUBTYPE_MXG
221 bool "Support MX-G processor"
224 Select MX-G if running on an R8A03022BG part.
226 # SH-3 Processor Support
228 config CPU_SUBTYPE_SH7705
229 bool "Support SH7705 processor"
232 config CPU_SUBTYPE_SH7706
233 bool "Support SH7706 processor"
236 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
238 config CPU_SUBTYPE_SH7707
239 bool "Support SH7707 processor"
242 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
244 config CPU_SUBTYPE_SH7708
245 bool "Support SH7708 processor"
248 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
249 if you have a 100 Mhz SH-3 HD6417708R CPU.
251 config CPU_SUBTYPE_SH7709
252 bool "Support SH7709 processor"
255 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
257 config CPU_SUBTYPE_SH7710
258 bool "Support SH7710 processor"
262 Select SH7710 if you have a SH3-DSP SH7710 CPU.
264 config CPU_SUBTYPE_SH7712
265 bool "Support SH7712 processor"
269 Select SH7712 if you have a SH3-DSP SH7712 CPU.
271 config CPU_SUBTYPE_SH7720
272 bool "Support SH7720 processor"
276 Select SH7720 if you have a SH3-DSP SH7720 CPU.
278 config CPU_SUBTYPE_SH7721
279 bool "Support SH7721 processor"
283 Select SH7721 if you have a SH3-DSP SH7721 CPU.
285 # SH-4 Processor Support
287 config CPU_SUBTYPE_SH7750
288 bool "Support SH7750 processor"
291 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
293 config CPU_SUBTYPE_SH7091
294 bool "Support SH7091 processor"
297 Select SH7091 if you have an SH-4 based Sega device (such as
298 the Dreamcast, Naomi, and Naomi 2).
300 config CPU_SUBTYPE_SH7750R
301 bool "Support SH7750R processor"
304 config CPU_SUBTYPE_SH7750S
305 bool "Support SH7750S processor"
308 config CPU_SUBTYPE_SH7751
309 bool "Support SH7751 processor"
312 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
313 or if you have a HD6417751R CPU.
315 config CPU_SUBTYPE_SH7751R
316 bool "Support SH7751R processor"
319 config CPU_SUBTYPE_SH7760
320 bool "Support SH7760 processor"
323 config CPU_SUBTYPE_SH4_202
324 bool "Support SH4-202 processor"
327 # SH-4A Processor Support
329 config CPU_SUBTYPE_SH7723
330 bool "Support SH7723 processor"
333 select ARCH_SPARSEMEM_ENABLE
334 select SYS_SUPPORTS_CMT
336 Select SH7723 if you have an SH-MobileR2 CPU.
338 config CPU_SUBTYPE_SH7763
339 bool "Support SH7763 processor"
342 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
344 config CPU_SUBTYPE_SH7770
345 bool "Support SH7770 processor"
348 config CPU_SUBTYPE_SH7780
349 bool "Support SH7780 processor"
352 config CPU_SUBTYPE_SH7785
353 bool "Support SH7785 processor"
356 select ARCH_SPARSEMEM_ENABLE
357 select SYS_SUPPORTS_NUMA
359 config CPU_SUBTYPE_SHX3
360 bool "Support SH-X3 processor"
363 select ARCH_SPARSEMEM_ENABLE
364 select SYS_SUPPORTS_NUMA
365 select SYS_SUPPORTS_SMP
366 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
368 # SH4AL-DSP Processor Support
370 config CPU_SUBTYPE_SH7343
371 bool "Support SH7343 processor"
373 select SYS_SUPPORTS_CMT
375 config CPU_SUBTYPE_SH7722
376 bool "Support SH7722 processor"
379 select ARCH_SPARSEMEM_ENABLE
380 select SYS_SUPPORTS_NUMA
381 select SYS_SUPPORTS_CMT
383 config CPU_SUBTYPE_SH7366
384 bool "Support SH7366 processor"
387 select ARCH_SPARSEMEM_ENABLE
388 select SYS_SUPPORTS_NUMA
389 select SYS_SUPPORTS_CMT
391 # SH-5 Processor Support
393 config CPU_SUBTYPE_SH5_101
394 bool "Support SH5-101 processor"
397 config CPU_SUBTYPE_SH5_103
398 bool "Support SH5-103 processor"
403 source "arch/sh/mm/Kconfig"
405 source "arch/sh/Kconfig.cpu"
407 source "arch/sh/boards/Kconfig"
409 menu "Timer and clock configuration"
412 bool "TMU timer support"
413 depends on CPU_SH3 || CPU_SH4
416 select GENERIC_CLOCKEVENTS
418 This enables the use of the TMU as the system timer.
421 bool "CMT timer support"
422 depends on SYS_SUPPORTS_CMT && CPU_SH2
425 This enables the use of the CMT as the system timer.
428 # Support for the new-style CMT driver. This will replace SH_CMT
429 # once its other dependencies are merged.
432 bool "CMT clockevents driver"
433 depends on SYS_SUPPORTS_CMT && !SH_CMT
434 select GENERIC_CLOCKEVENTS
437 bool "MTU2 timer support"
441 This enables the use of the MTU2 as the system timer.
445 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
447 default "86" if CPU_SUBTYPE_SH7619
448 default "140" if CPU_SUBTYPE_SH7206
449 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
450 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
451 default "238" if CPU_SUBTYPE_MXG
455 int "Peripheral clock frequency (in Hz)"
456 default "27000000" if CPU_SUBTYPE_SH7343
457 default "31250000" if CPU_SUBTYPE_SH7619
458 default "32000000" if CPU_SUBTYPE_SH7722
459 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
460 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
461 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
462 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
463 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
464 default "66000000" if CPU_SUBTYPE_SH4_202
467 This option is used to specify the peripheral clock frequency.
468 This is necessary for determining the reference clock value on
469 platforms lacking an RTC.
472 int "CPU Mode Pin Setting"
474 default 6 if CPU_SUBTYPE_SH7206
475 default 5 if CPU_SUBTYPE_SH7619
478 MD2 - MD0 pin setting.
480 source "kernel/time/Kconfig"
484 menu "CPU Frequency scaling"
486 source "drivers/cpufreq/Kconfig"
489 tristate "SuperH CPU Frequency driver"
491 select CPU_FREQ_TABLE
493 This adds the cpufreq driver for SuperH. Any CPU that supports
494 clock rate rounding through the clock framework can use this
495 driver. While it will make the kernel slightly larger, this is
496 harmless for CPUs that don't support rate rounding. The driver
497 will also generate a notice in the boot log before disabling
498 itself if the CPU in question is not capable of rate rounding.
500 For details, take a look at <file:Documentation/cpu-freq>.
506 source "arch/sh/drivers/Kconfig"
510 menu "Kernel features"
512 source kernel/Kconfig.hz
515 bool "kexec system call (EXPERIMENTAL)"
516 depends on SUPERH32 && EXPERIMENTAL
518 kexec is a system call that implements the ability to shutdown your
519 current kernel, and to start another kernel. It is like a reboot
520 but it is independent of the system firmware. And like a reboot
521 you can start any kernel with it, not just Linux.
523 The name comes from the similarity to the exec system call.
525 It is an ongoing process to be certain the hardware in a machine
526 is properly shutdown, so do not be surprised if this code does not
527 initially work for you. It may help to enable device hotplugging
528 support. As of this writing the exact hardware interface is
529 strongly in flux, so no good recommendation can be made.
532 bool "kernel crash dumps (EXPERIMENTAL)"
533 depends on SUPERH32 && EXPERIMENTAL
535 Generate crash dump after being started by kexec.
536 This should be normally only set in special crash dump kernels
537 which are loaded in the main kernel with kexec-tools into
538 a specially reserved region and then later executed after
539 a crash by kdump/kexec. The crash dump kernel must be compiled
540 to a memory address not used by the main kernel using
543 For more details see Documentation/kdump/kdump.txt
546 bool "Enable seccomp to safely compute untrusted bytecode"
549 This kernel feature is useful for number crunching applications
550 that may need to compute untrusted bytecode during their
551 execution. By using pipes or other transports made available to
552 the process as file descriptors supporting the read/write
553 syscalls, it's possible to isolate those applications in
554 their own address space using seccomp. Once seccomp is
555 enabled via prctl, it cannot be disabled and the task is only
556 allowed to execute a few safe syscalls defined by each seccomp
562 bool "Symmetric multi-processing support"
563 depends on SYS_SUPPORTS_SMP
564 select USE_GENERIC_SMP_HELPERS
566 This enables support for systems with more than one CPU. If you have
567 a system with only one CPU, like most personal computers, say N. If
568 you have a system with more than one CPU, say Y.
570 If you say N here, the kernel will run on single and multiprocessor
571 machines, but will use only one CPU of a multiprocessor machine. If
572 you say Y here, the kernel will run on many, but not all,
573 singleprocessor machines. On a singleprocessor machine, the kernel
574 will run faster if you say N here.
576 People using multiprocessor machines who say Y here should also say
577 Y to "Enhanced Real Time Clock Support", below.
579 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
580 available at <http://www.tldp.org/docs.html#howto>.
582 If you don't know what to do here, say N.
585 int "Maximum number of CPUs (2-32)"
588 default "4" if CPU_SHX3
591 This allows you to specify the maximum number of CPUs which this
592 kernel will support. The maximum supported value is 32 and the
593 minimum value which makes sense is 2.
595 This is purely to save memory - each supported CPU adds
596 approximately eight kilobytes to the kernel image.
598 source "kernel/Kconfig.preempt"
602 depends on !SMP && SUPERH32
604 This enables support for gUSA (general UserSpace Atomicity).
605 This is the default implementation for both UP and non-ll/sc
606 CPUs, and is used by the libc, amongst others.
608 For additional information, design information can be found
609 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
611 This should only be disabled for special cases where alternate
612 atomicity implementations exist.
615 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
616 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
618 Enabling this option will allow the kernel to implement some
619 atomic operations using a software implemention of load-locked/
620 store-conditional (LLSC). On machines which do not have hardware
621 LLSC, this should be more efficient than the other alternative of
622 disabling insterrupts around the atomic sequence.
628 config ZERO_PAGE_OFFSET
629 hex "Zero page offset"
630 default "0x00004000" if SH_SH03
631 default "0x00010000" if PAGE_SIZE_64KB
632 default "0x00002000" if PAGE_SIZE_8KB
635 This sets the default offset of zero page.
637 config BOOT_LINK_OFFSET
638 hex "Link address offset for booting"
641 This option allows you to set the link address offset of the zImage.
642 This can be useful if you are on a board which has a small amount of
646 bool "Wakeup UBC on startup"
647 depends on CPU_SH4 && !CPU_SH4A
649 Selecting this option will wakeup the User Break Controller (UBC) on
650 startup. Although the UBC is left in an awake state when the processor
651 comes up, some boot loaders misbehave by putting the UBC to sleep in a
652 power saving state, which causes issues with things like ptrace().
657 bool "Default bootloader kernel arguments"
660 string "Initial kernel command string"
661 depends on CMDLINE_BOOL
662 default "console=ttySC1,115200"
669 tristate "SuperHyway Bus support"
670 depends on CPU_SUBTYPE_SH4_202
673 bool "Maple Bus support"
674 depends on SH_DREAMCAST
676 The Maple Bus is SEGA's serial communication bus for peripherals
677 on the Dreamcast. Without this bus support you won't be able to
678 get your Dreamcast keyboard etc to work, so most users
679 probably want to say 'Y' here, unless you are only using the
680 Dreamcast with a serial line terminal or a remote network
683 source "arch/sh/drivers/pci/Kconfig"
685 source "drivers/pci/pcie/Kconfig"
687 source "drivers/pci/Kconfig"
689 source "drivers/pcmcia/Kconfig"
691 source "drivers/pci/hotplug/Kconfig"
695 menu "Executable file formats"
697 source "fs/Kconfig.binfmt"
701 menu "Power management options (EXPERIMENTAL)"
702 depends on EXPERIMENTAL
704 source "kernel/power/Kconfig"
706 source "drivers/cpuidle/Kconfig"
712 source "drivers/Kconfig"
716 source "arch/sh/Kconfig.debug"
718 source "security/Kconfig"
720 source "crypto/Kconfig"