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
19 The SuperH is a RISC processor targeted for use in embedded systems
20 and consumer electronics; it was also used in the Sega Dreamcast
21 gaming console. The SuperH port has a home page at
22 <http://www.linux-sh.org/>.
27 select HAVE_KRETPROBES
28 select HAVE_FUNCTION_TRACER
29 select HAVE_FTRACE_MCOUNT_RECORD
30 select HAVE_DYNAMIC_FTRACE
32 select ARCH_HIBERNATION_POSSIBLE if MMU
39 default "arch/sh/configs/shx3_defconfig" if SUPERH32
40 default "arch/sh/configs/cayman_defconfig" if SUPERH64
42 config RWSEM_GENERIC_SPINLOCK
45 config RWSEM_XCHGADD_ALGORITHM
50 depends on BUG && SUPERH32
52 config GENERIC_FIND_NEXT_BIT
55 config GENERIC_HWEIGHT
58 config GENERIC_HARDIRQS
61 config GENERIC_HARDIRQS_NO__DO_IRQ
64 config GENERIC_IRQ_PROBE
70 config GENERIC_CALIBRATE_DELAY
79 config GENERIC_CLOCKEVENTS
82 config GENERIC_CLOCKEVENTS_BROADCAST
85 config GENERIC_LOCKBREAK
87 depends on SMP && PREEMPT
89 config SYS_SUPPORTS_PM
93 config ARCH_SUSPEND_POSSIBLE
96 config ARCH_HIBERNATION_POSSIBLE
99 config SYS_SUPPORTS_APM_EMULATION
101 select ARCH_SUSPEND_POSSIBLE
103 config SYS_SUPPORTS_SMP
106 config SYS_SUPPORTS_NUMA
109 config SYS_SUPPORTS_PCI
112 config SYS_SUPPORTS_CMT
115 config STACKTRACE_SUPPORT
118 config LOCKDEP_SUPPORT
121 config HAVE_LATENCYTOP_SUPPORT
125 config ARCH_HAS_ILOG2_U32
128 config ARCH_HAS_ILOG2_U64
131 config ARCH_NO_VIRT_TO_BUS
134 config ARCH_HAS_DEFAULT_IDLE
140 source "init/Kconfig"
142 source "kernel/Kconfig.freezer"
158 select CPU_HAS_INTEVT
163 select CPU_HAS_INTEVT
165 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
166 select CPU_HAS_FPU if !CPU_SH4AL_DSP
189 select ARCH_SUSPEND_POSSIBLE
192 prompt "Processor sub-type selection"
198 # SH-2 Processor Support
200 config CPU_SUBTYPE_SH7619
201 bool "Support SH7619 processor"
203 select SYS_SUPPORTS_CMT
205 # SH-2A Processor Support
207 config CPU_SUBTYPE_SH7201
208 bool "Support SH7201 processor"
212 config CPU_SUBTYPE_SH7203
213 bool "Support SH7203 processor"
216 select SYS_SUPPORTS_CMT
218 config CPU_SUBTYPE_SH7206
219 bool "Support SH7206 processor"
221 select SYS_SUPPORTS_CMT
223 config CPU_SUBTYPE_SH7263
224 bool "Support SH7263 processor"
227 select SYS_SUPPORTS_CMT
229 config CPU_SUBTYPE_MXG
230 bool "Support MX-G processor"
233 Select MX-G if running on an R8A03022BG part.
235 # SH-3 Processor Support
237 config CPU_SUBTYPE_SH7705
238 bool "Support SH7705 processor"
241 config CPU_SUBTYPE_SH7706
242 bool "Support SH7706 processor"
245 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
247 config CPU_SUBTYPE_SH7707
248 bool "Support SH7707 processor"
251 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
253 config CPU_SUBTYPE_SH7708
254 bool "Support SH7708 processor"
257 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
258 if you have a 100 Mhz SH-3 HD6417708R CPU.
260 config CPU_SUBTYPE_SH7709
261 bool "Support SH7709 processor"
264 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
266 config CPU_SUBTYPE_SH7710
267 bool "Support SH7710 processor"
271 Select SH7710 if you have a SH3-DSP SH7710 CPU.
273 config CPU_SUBTYPE_SH7712
274 bool "Support SH7712 processor"
278 Select SH7712 if you have a SH3-DSP SH7712 CPU.
280 config CPU_SUBTYPE_SH7720
281 bool "Support SH7720 processor"
285 Select SH7720 if you have a SH3-DSP SH7720 CPU.
287 config CPU_SUBTYPE_SH7721
288 bool "Support SH7721 processor"
292 Select SH7721 if you have a SH3-DSP SH7721 CPU.
294 # SH-4 Processor Support
296 config CPU_SUBTYPE_SH7750
297 bool "Support SH7750 processor"
300 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
302 config CPU_SUBTYPE_SH7091
303 bool "Support SH7091 processor"
306 Select SH7091 if you have an SH-4 based Sega device (such as
307 the Dreamcast, Naomi, and Naomi 2).
309 config CPU_SUBTYPE_SH7750R
310 bool "Support SH7750R processor"
313 config CPU_SUBTYPE_SH7750S
314 bool "Support SH7750S processor"
317 config CPU_SUBTYPE_SH7751
318 bool "Support SH7751 processor"
321 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
322 or if you have a HD6417751R CPU.
324 config CPU_SUBTYPE_SH7751R
325 bool "Support SH7751R processor"
328 config CPU_SUBTYPE_SH7760
329 bool "Support SH7760 processor"
332 config CPU_SUBTYPE_SH4_202
333 bool "Support SH4-202 processor"
336 # SH-4A Processor Support
338 config CPU_SUBTYPE_SH7723
339 bool "Support SH7723 processor"
343 select ARCH_SPARSEMEM_ENABLE
344 select SYS_SUPPORTS_CMT
346 Select SH7723 if you have an SH-MobileR2 CPU.
348 config CPU_SUBTYPE_SH7763
349 bool "Support SH7763 processor"
352 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
354 config CPU_SUBTYPE_SH7770
355 bool "Support SH7770 processor"
358 config CPU_SUBTYPE_SH7780
359 bool "Support SH7780 processor"
362 config CPU_SUBTYPE_SH7785
363 bool "Support SH7785 processor"
366 select ARCH_SPARSEMEM_ENABLE
367 select SYS_SUPPORTS_NUMA
369 config CPU_SUBTYPE_SH7786
370 bool "Support SH7786 processor"
373 select CPU_HAS_PTEAEX
374 select ARCH_SPARSEMEM_ENABLE
375 select SYS_SUPPORTS_NUMA
377 config CPU_SUBTYPE_SHX3
378 bool "Support SH-X3 processor"
381 select ARCH_SPARSEMEM_ENABLE
382 select SYS_SUPPORTS_NUMA
383 select SYS_SUPPORTS_SMP
384 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
386 # SH4AL-DSP Processor Support
388 config CPU_SUBTYPE_SH7343
389 bool "Support SH7343 processor"
392 select SYS_SUPPORTS_CMT
394 config CPU_SUBTYPE_SH7722
395 bool "Support SH7722 processor"
399 select ARCH_SPARSEMEM_ENABLE
400 select SYS_SUPPORTS_NUMA
401 select SYS_SUPPORTS_CMT
403 config CPU_SUBTYPE_SH7366
404 bool "Support SH7366 processor"
408 select ARCH_SPARSEMEM_ENABLE
409 select SYS_SUPPORTS_NUMA
410 select SYS_SUPPORTS_CMT
412 # SH-5 Processor Support
414 config CPU_SUBTYPE_SH5_101
415 bool "Support SH5-101 processor"
418 config CPU_SUBTYPE_SH5_103
419 bool "Support SH5-103 processor"
424 source "arch/sh/mm/Kconfig"
426 source "arch/sh/Kconfig.cpu"
428 source "arch/sh/boards/Kconfig"
430 menu "Timer and clock configuration"
433 bool "TMU timer support"
434 depends on CPU_SH3 || CPU_SH4
437 select GENERIC_CLOCKEVENTS
439 This enables the use of the TMU as the system timer.
442 bool "CMT timer support"
443 depends on SYS_SUPPORTS_CMT && CPU_SH2
446 This enables the use of the CMT as the system timer.
449 # Support for the new-style CMT driver. This will replace SH_CMT
450 # once its other dependencies are merged.
453 bool "CMT clockevents driver"
454 depends on SYS_SUPPORTS_CMT && !SH_CMT
455 select GENERIC_CLOCKEVENTS
458 bool "MTU2 timer support"
462 This enables the use of the MTU2 as the system timer.
466 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
468 default "86" if CPU_SUBTYPE_SH7619
469 default "140" if CPU_SUBTYPE_SH7206
470 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
471 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
472 default "238" if CPU_SUBTYPE_MXG
476 int "Peripheral clock frequency (in Hz)"
477 default "27000000" if CPU_SUBTYPE_SH7343
478 default "31250000" if CPU_SUBTYPE_SH7619
479 default "32000000" if CPU_SUBTYPE_SH7722
480 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
481 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
482 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
483 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
485 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
486 default "66000000" if CPU_SUBTYPE_SH4_202
489 This option is used to specify the peripheral clock frequency.
490 This is necessary for determining the reference clock value on
491 platforms lacking an RTC.
494 int "CPU Mode Pin Setting"
496 default 6 if CPU_SUBTYPE_SH7206
497 default 5 if CPU_SUBTYPE_SH7619
500 MD2 - MD0 pin setting.
502 source "kernel/time/Kconfig"
506 menu "CPU Frequency scaling"
508 source "drivers/cpufreq/Kconfig"
511 tristate "SuperH CPU Frequency driver"
513 select CPU_FREQ_TABLE
515 This adds the cpufreq driver for SuperH. Any CPU that supports
516 clock rate rounding through the clock framework can use this
517 driver. While it will make the kernel slightly larger, this is
518 harmless for CPUs that don't support rate rounding. The driver
519 will also generate a notice in the boot log before disabling
520 itself if the CPU in question is not capable of rate rounding.
522 For details, take a look at <file:Documentation/cpu-freq>.
528 source "arch/sh/drivers/Kconfig"
532 menu "Kernel features"
534 source kernel/Kconfig.hz
537 bool "kexec system call (EXPERIMENTAL)"
538 depends on SUPERH32 && EXPERIMENTAL && MMU
540 kexec is a system call that implements the ability to shutdown your
541 current kernel, and to start another kernel. It is like a reboot
542 but it is independent of the system firmware. And like a reboot
543 you can start any kernel with it, not just Linux.
545 The name comes from the similarity to the exec system call.
547 It is an ongoing process to be certain the hardware in a machine
548 is properly shutdown, so do not be surprised if this code does not
549 initially work for you. It may help to enable device hotplugging
550 support. As of this writing the exact hardware interface is
551 strongly in flux, so no good recommendation can be made.
554 bool "kernel crash dumps (EXPERIMENTAL)"
555 depends on SUPERH32 && EXPERIMENTAL
557 Generate crash dump after being started by kexec.
558 This should be normally only set in special crash dump kernels
559 which are loaded in the main kernel with kexec-tools into
560 a specially reserved region and then later executed after
561 a crash by kdump/kexec. The crash dump kernel must be compiled
562 to a memory address not used by the main kernel using
565 For more details see Documentation/kdump/kdump.txt
568 bool "kexec jump (EXPERIMENTAL)"
569 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
571 Jump between original kernel and kexeced kernel and invoke
575 bool "Enable seccomp to safely compute untrusted bytecode"
578 This kernel feature is useful for number crunching applications
579 that may need to compute untrusted bytecode during their
580 execution. By using pipes or other transports made available to
581 the process as file descriptors supporting the read/write
582 syscalls, it's possible to isolate those applications in
583 their own address space using seccomp. Once seccomp is
584 enabled via prctl, it cannot be disabled and the task is only
585 allowed to execute a few safe syscalls defined by each seccomp
591 bool "Symmetric multi-processing support"
592 depends on SYS_SUPPORTS_SMP
593 select USE_GENERIC_SMP_HELPERS
595 This enables support for systems with more than one CPU. If you have
596 a system with only one CPU, like most personal computers, say N. If
597 you have a system with more than one CPU, say Y.
599 If you say N here, the kernel will run on single and multiprocessor
600 machines, but will use only one CPU of a multiprocessor machine. If
601 you say Y here, the kernel will run on many, but not all,
602 singleprocessor machines. On a singleprocessor machine, the kernel
603 will run faster if you say N here.
605 People using multiprocessor machines who say Y here should also say
606 Y to "Enhanced Real Time Clock Support", below.
608 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
609 available at <http://www.tldp.org/docs.html#howto>.
611 If you don't know what to do here, say N.
614 int "Maximum number of CPUs (2-32)"
617 default "4" if CPU_SHX3
620 This allows you to specify the maximum number of CPUs which this
621 kernel will support. The maximum supported value is 32 and the
622 minimum value which makes sense is 2.
624 This is purely to save memory - each supported CPU adds
625 approximately eight kilobytes to the kernel image.
627 source "kernel/Kconfig.preempt"
631 depends on !SMP && SUPERH32
633 This enables support for gUSA (general UserSpace Atomicity).
634 This is the default implementation for both UP and non-ll/sc
635 CPUs, and is used by the libc, amongst others.
637 For additional information, design information can be found
638 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
640 This should only be disabled for special cases where alternate
641 atomicity implementations exist.
644 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
645 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
647 Enabling this option will allow the kernel to implement some
648 atomic operations using a software implementation of load-locked/
649 store-conditional (LLSC). On machines which do not have hardware
650 LLSC, this should be more efficient than the other alternative of
651 disabling interrupts around the atomic sequence.
657 config ZERO_PAGE_OFFSET
658 hex "Zero page offset"
659 default "0x00004000" if SH_SH03
660 default "0x00010000" if PAGE_SIZE_64KB
661 default "0x00002000" if PAGE_SIZE_8KB
664 This sets the default offset of zero page.
666 config BOOT_LINK_OFFSET
667 hex "Link address offset for booting"
670 This option allows you to set the link address offset of the zImage.
671 This can be useful if you are on a board which has a small amount of
675 bool "Wakeup UBC on startup"
676 depends on CPU_SH4 && !CPU_SH4A
678 Selecting this option will wakeup the User Break Controller (UBC) on
679 startup. Although the UBC is left in an awake state when the processor
680 comes up, some boot loaders misbehave by putting the UBC to sleep in a
681 power saving state, which causes issues with things like ptrace().
686 bool "Default bootloader kernel arguments"
689 string "Initial kernel command string"
690 depends on CMDLINE_BOOL
691 default "console=ttySC1,115200"
698 tristate "SuperHyway Bus support"
699 depends on CPU_SUBTYPE_SH4_202
702 bool "Maple Bus support"
703 depends on SH_DREAMCAST
705 The Maple Bus is SEGA's serial communication bus for peripherals
706 on the Dreamcast. Without this bus support you won't be able to
707 get your Dreamcast keyboard etc to work, so most users
708 probably want to say 'Y' here, unless you are only using the
709 Dreamcast with a serial line terminal or a remote network
712 source "arch/sh/drivers/pci/Kconfig"
714 source "drivers/pci/pcie/Kconfig"
716 source "drivers/pci/Kconfig"
718 source "drivers/pcmcia/Kconfig"
720 source "drivers/pci/hotplug/Kconfig"
724 menu "Executable file formats"
726 source "fs/Kconfig.binfmt"
730 menu "Power management options (EXPERIMENTAL)"
731 depends on EXPERIMENTAL
733 source "kernel/power/Kconfig"
735 source "drivers/cpuidle/Kconfig"
741 source "drivers/Kconfig"
745 source "arch/sh/Kconfig.debug"
747 source "security/Kconfig"
749 source "crypto/Kconfig"