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_SH7786
360 bool "Support SH7786 processor"
363 select ARCH_SPARSEMEM_ENABLE
364 select SYS_SUPPORTS_NUMA
366 config CPU_SUBTYPE_SHX3
367 bool "Support SH-X3 processor"
370 select ARCH_SPARSEMEM_ENABLE
371 select SYS_SUPPORTS_NUMA
372 select SYS_SUPPORTS_SMP
373 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
375 # SH4AL-DSP Processor Support
377 config CPU_SUBTYPE_SH7343
378 bool "Support SH7343 processor"
380 select SYS_SUPPORTS_CMT
382 config CPU_SUBTYPE_SH7722
383 bool "Support SH7722 processor"
386 select ARCH_SPARSEMEM_ENABLE
387 select SYS_SUPPORTS_NUMA
388 select SYS_SUPPORTS_CMT
390 config CPU_SUBTYPE_SH7366
391 bool "Support SH7366 processor"
394 select ARCH_SPARSEMEM_ENABLE
395 select SYS_SUPPORTS_NUMA
396 select SYS_SUPPORTS_CMT
398 # SH-5 Processor Support
400 config CPU_SUBTYPE_SH5_101
401 bool "Support SH5-101 processor"
404 config CPU_SUBTYPE_SH5_103
405 bool "Support SH5-103 processor"
410 source "arch/sh/mm/Kconfig"
412 source "arch/sh/Kconfig.cpu"
414 source "arch/sh/boards/Kconfig"
416 menu "Timer and clock configuration"
419 bool "TMU timer support"
420 depends on CPU_SH3 || CPU_SH4
423 select GENERIC_CLOCKEVENTS
425 This enables the use of the TMU as the system timer.
428 bool "CMT timer support"
429 depends on SYS_SUPPORTS_CMT && CPU_SH2
432 This enables the use of the CMT as the system timer.
435 # Support for the new-style CMT driver. This will replace SH_CMT
436 # once its other dependencies are merged.
439 bool "CMT clockevents driver"
440 depends on SYS_SUPPORTS_CMT && !SH_CMT
441 select GENERIC_CLOCKEVENTS
444 bool "MTU2 timer support"
448 This enables the use of the MTU2 as the system timer.
452 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
454 default "86" if CPU_SUBTYPE_SH7619
455 default "140" if CPU_SUBTYPE_SH7206
456 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
457 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
458 default "238" if CPU_SUBTYPE_MXG
462 int "Peripheral clock frequency (in Hz)"
463 default "27000000" if CPU_SUBTYPE_SH7343
464 default "31250000" if CPU_SUBTYPE_SH7619
465 default "32000000" if CPU_SUBTYPE_SH7722
466 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
467 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
468 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
469 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
471 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
472 default "66000000" if CPU_SUBTYPE_SH4_202
475 This option is used to specify the peripheral clock frequency.
476 This is necessary for determining the reference clock value on
477 platforms lacking an RTC.
480 int "CPU Mode Pin Setting"
482 default 6 if CPU_SUBTYPE_SH7206
483 default 5 if CPU_SUBTYPE_SH7619
486 MD2 - MD0 pin setting.
488 source "kernel/time/Kconfig"
492 menu "CPU Frequency scaling"
494 source "drivers/cpufreq/Kconfig"
497 tristate "SuperH CPU Frequency driver"
499 select CPU_FREQ_TABLE
501 This adds the cpufreq driver for SuperH. Any CPU that supports
502 clock rate rounding through the clock framework can use this
503 driver. While it will make the kernel slightly larger, this is
504 harmless for CPUs that don't support rate rounding. The driver
505 will also generate a notice in the boot log before disabling
506 itself if the CPU in question is not capable of rate rounding.
508 For details, take a look at <file:Documentation/cpu-freq>.
514 source "arch/sh/drivers/Kconfig"
518 menu "Kernel features"
520 source kernel/Kconfig.hz
523 bool "kexec system call (EXPERIMENTAL)"
524 depends on SUPERH32 && EXPERIMENTAL
526 kexec is a system call that implements the ability to shutdown your
527 current kernel, and to start another kernel. It is like a reboot
528 but it is independent of the system firmware. And like a reboot
529 you can start any kernel with it, not just Linux.
531 The name comes from the similarity to the exec system call.
533 It is an ongoing process to be certain the hardware in a machine
534 is properly shutdown, so do not be surprised if this code does not
535 initially work for you. It may help to enable device hotplugging
536 support. As of this writing the exact hardware interface is
537 strongly in flux, so no good recommendation can be made.
540 bool "kernel crash dumps (EXPERIMENTAL)"
541 depends on SUPERH32 && EXPERIMENTAL
543 Generate crash dump after being started by kexec.
544 This should be normally only set in special crash dump kernels
545 which are loaded in the main kernel with kexec-tools into
546 a specially reserved region and then later executed after
547 a crash by kdump/kexec. The crash dump kernel must be compiled
548 to a memory address not used by the main kernel using
551 For more details see Documentation/kdump/kdump.txt
554 bool "Enable seccomp to safely compute untrusted bytecode"
557 This kernel feature is useful for number crunching applications
558 that may need to compute untrusted bytecode during their
559 execution. By using pipes or other transports made available to
560 the process as file descriptors supporting the read/write
561 syscalls, it's possible to isolate those applications in
562 their own address space using seccomp. Once seccomp is
563 enabled via prctl, it cannot be disabled and the task is only
564 allowed to execute a few safe syscalls defined by each seccomp
570 bool "Symmetric multi-processing support"
571 depends on SYS_SUPPORTS_SMP
572 select USE_GENERIC_SMP_HELPERS
574 This enables support for systems with more than one CPU. If you have
575 a system with only one CPU, like most personal computers, say N. If
576 you have a system with more than one CPU, say Y.
578 If you say N here, the kernel will run on single and multiprocessor
579 machines, but will use only one CPU of a multiprocessor machine. If
580 you say Y here, the kernel will run on many, but not all,
581 singleprocessor machines. On a singleprocessor machine, the kernel
582 will run faster if you say N here.
584 People using multiprocessor machines who say Y here should also say
585 Y to "Enhanced Real Time Clock Support", below.
587 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
588 available at <http://www.tldp.org/docs.html#howto>.
590 If you don't know what to do here, say N.
593 int "Maximum number of CPUs (2-32)"
596 default "4" if CPU_SHX3
599 This allows you to specify the maximum number of CPUs which this
600 kernel will support. The maximum supported value is 32 and the
601 minimum value which makes sense is 2.
603 This is purely to save memory - each supported CPU adds
604 approximately eight kilobytes to the kernel image.
606 source "kernel/Kconfig.preempt"
610 depends on !SMP && SUPERH32
612 This enables support for gUSA (general UserSpace Atomicity).
613 This is the default implementation for both UP and non-ll/sc
614 CPUs, and is used by the libc, amongst others.
616 For additional information, design information can be found
617 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
619 This should only be disabled for special cases where alternate
620 atomicity implementations exist.
623 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
624 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
626 Enabling this option will allow the kernel to implement some
627 atomic operations using a software implemention of load-locked/
628 store-conditional (LLSC). On machines which do not have hardware
629 LLSC, this should be more efficient than the other alternative of
630 disabling insterrupts around the atomic sequence.
636 config ZERO_PAGE_OFFSET
637 hex "Zero page offset"
638 default "0x00004000" if SH_SH03
639 default "0x00010000" if PAGE_SIZE_64KB
640 default "0x00002000" if PAGE_SIZE_8KB
643 This sets the default offset of zero page.
645 config BOOT_LINK_OFFSET
646 hex "Link address offset for booting"
649 This option allows you to set the link address offset of the zImage.
650 This can be useful if you are on a board which has a small amount of
654 bool "Wakeup UBC on startup"
655 depends on CPU_SH4 && !CPU_SH4A
657 Selecting this option will wakeup the User Break Controller (UBC) on
658 startup. Although the UBC is left in an awake state when the processor
659 comes up, some boot loaders misbehave by putting the UBC to sleep in a
660 power saving state, which causes issues with things like ptrace().
665 bool "Default bootloader kernel arguments"
668 string "Initial kernel command string"
669 depends on CMDLINE_BOOL
670 default "console=ttySC1,115200"
677 tristate "SuperHyway Bus support"
678 depends on CPU_SUBTYPE_SH4_202
681 bool "Maple Bus support"
682 depends on SH_DREAMCAST
684 The Maple Bus is SEGA's serial communication bus for peripherals
685 on the Dreamcast. Without this bus support you won't be able to
686 get your Dreamcast keyboard etc to work, so most users
687 probably want to say 'Y' here, unless you are only using the
688 Dreamcast with a serial line terminal or a remote network
691 source "arch/sh/drivers/pci/Kconfig"
693 source "drivers/pci/pcie/Kconfig"
695 source "drivers/pci/Kconfig"
697 source "drivers/pcmcia/Kconfig"
699 source "drivers/pci/hotplug/Kconfig"
703 menu "Executable file formats"
705 source "fs/Kconfig.binfmt"
709 menu "Power management options (EXPERIMENTAL)"
710 depends on EXPERIMENTAL
712 source "kernel/power/Kconfig"
714 source "drivers/cpuidle/Kconfig"
720 source "drivers/Kconfig"
724 source "arch/sh/Kconfig.debug"
726 source "security/Kconfig"
728 source "crypto/Kconfig"