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
470 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
471 default "66000000" if CPU_SUBTYPE_SH4_202
474 This option is used to specify the peripheral clock frequency.
475 This is necessary for determining the reference clock value on
476 platforms lacking an RTC.
479 int "CPU Mode Pin Setting"
481 default 6 if CPU_SUBTYPE_SH7206
482 default 5 if CPU_SUBTYPE_SH7619
485 MD2 - MD0 pin setting.
487 source "kernel/time/Kconfig"
491 menu "CPU Frequency scaling"
493 source "drivers/cpufreq/Kconfig"
496 tristate "SuperH CPU Frequency driver"
498 select CPU_FREQ_TABLE
500 This adds the cpufreq driver for SuperH. Any CPU that supports
501 clock rate rounding through the clock framework can use this
502 driver. While it will make the kernel slightly larger, this is
503 harmless for CPUs that don't support rate rounding. The driver
504 will also generate a notice in the boot log before disabling
505 itself if the CPU in question is not capable of rate rounding.
507 For details, take a look at <file:Documentation/cpu-freq>.
513 source "arch/sh/drivers/Kconfig"
517 menu "Kernel features"
519 source kernel/Kconfig.hz
522 bool "kexec system call (EXPERIMENTAL)"
523 depends on SUPERH32 && EXPERIMENTAL
525 kexec is a system call that implements the ability to shutdown your
526 current kernel, and to start another kernel. It is like a reboot
527 but it is independent of the system firmware. And like a reboot
528 you can start any kernel with it, not just Linux.
530 The name comes from the similarity to the exec system call.
532 It is an ongoing process to be certain the hardware in a machine
533 is properly shutdown, so do not be surprised if this code does not
534 initially work for you. It may help to enable device hotplugging
535 support. As of this writing the exact hardware interface is
536 strongly in flux, so no good recommendation can be made.
539 bool "kernel crash dumps (EXPERIMENTAL)"
540 depends on SUPERH32 && EXPERIMENTAL
542 Generate crash dump after being started by kexec.
543 This should be normally only set in special crash dump kernels
544 which are loaded in the main kernel with kexec-tools into
545 a specially reserved region and then later executed after
546 a crash by kdump/kexec. The crash dump kernel must be compiled
547 to a memory address not used by the main kernel using
550 For more details see Documentation/kdump/kdump.txt
553 bool "Enable seccomp to safely compute untrusted bytecode"
556 This kernel feature is useful for number crunching applications
557 that may need to compute untrusted bytecode during their
558 execution. By using pipes or other transports made available to
559 the process as file descriptors supporting the read/write
560 syscalls, it's possible to isolate those applications in
561 their own address space using seccomp. Once seccomp is
562 enabled via prctl, it cannot be disabled and the task is only
563 allowed to execute a few safe syscalls defined by each seccomp
569 bool "Symmetric multi-processing support"
570 depends on SYS_SUPPORTS_SMP
571 select USE_GENERIC_SMP_HELPERS
573 This enables support for systems with more than one CPU. If you have
574 a system with only one CPU, like most personal computers, say N. If
575 you have a system with more than one CPU, say Y.
577 If you say N here, the kernel will run on single and multiprocessor
578 machines, but will use only one CPU of a multiprocessor machine. If
579 you say Y here, the kernel will run on many, but not all,
580 singleprocessor machines. On a singleprocessor machine, the kernel
581 will run faster if you say N here.
583 People using multiprocessor machines who say Y here should also say
584 Y to "Enhanced Real Time Clock Support", below.
586 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
587 available at <http://www.tldp.org/docs.html#howto>.
589 If you don't know what to do here, say N.
592 int "Maximum number of CPUs (2-32)"
595 default "4" if CPU_SHX3
598 This allows you to specify the maximum number of CPUs which this
599 kernel will support. The maximum supported value is 32 and the
600 minimum value which makes sense is 2.
602 This is purely to save memory - each supported CPU adds
603 approximately eight kilobytes to the kernel image.
605 source "kernel/Kconfig.preempt"
609 depends on !SMP && SUPERH32
611 This enables support for gUSA (general UserSpace Atomicity).
612 This is the default implementation for both UP and non-ll/sc
613 CPUs, and is used by the libc, amongst others.
615 For additional information, design information can be found
616 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
618 This should only be disabled for special cases where alternate
619 atomicity implementations exist.
622 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
623 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
625 Enabling this option will allow the kernel to implement some
626 atomic operations using a software implemention of load-locked/
627 store-conditional (LLSC). On machines which do not have hardware
628 LLSC, this should be more efficient than the other alternative of
629 disabling insterrupts around the atomic sequence.
635 config ZERO_PAGE_OFFSET
636 hex "Zero page offset"
637 default "0x00004000" if SH_SH03
638 default "0x00010000" if PAGE_SIZE_64KB
639 default "0x00002000" if PAGE_SIZE_8KB
642 This sets the default offset of zero page.
644 config BOOT_LINK_OFFSET
645 hex "Link address offset for booting"
648 This option allows you to set the link address offset of the zImage.
649 This can be useful if you are on a board which has a small amount of
653 bool "Wakeup UBC on startup"
654 depends on CPU_SH4 && !CPU_SH4A
656 Selecting this option will wakeup the User Break Controller (UBC) on
657 startup. Although the UBC is left in an awake state when the processor
658 comes up, some boot loaders misbehave by putting the UBC to sleep in a
659 power saving state, which causes issues with things like ptrace().
664 bool "Default bootloader kernel arguments"
667 string "Initial kernel command string"
668 depends on CMDLINE_BOOL
669 default "console=ttySC1,115200"
676 tristate "SuperHyway Bus support"
677 depends on CPU_SUBTYPE_SH4_202
680 bool "Maple Bus support"
681 depends on SH_DREAMCAST
683 The Maple Bus is SEGA's serial communication bus for peripherals
684 on the Dreamcast. Without this bus support you won't be able to
685 get your Dreamcast keyboard etc to work, so most users
686 probably want to say 'Y' here, unless you are only using the
687 Dreamcast with a serial line terminal or a remote network
690 source "arch/sh/drivers/pci/Kconfig"
692 source "drivers/pci/pcie/Kconfig"
694 source "drivers/pci/Kconfig"
696 source "drivers/pcmcia/Kconfig"
698 source "drivers/pci/hotplug/Kconfig"
702 menu "Executable file formats"
704 source "fs/Kconfig.binfmt"
708 menu "Power management options (EXPERIMENTAL)"
709 depends on EXPERIMENTAL
711 source "kernel/power/Kconfig"
713 source "drivers/cpuidle/Kconfig"
719 source "drivers/Kconfig"
723 source "arch/sh/Kconfig.debug"
725 source "security/Kconfig"
727 source "crypto/Kconfig"