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
35 def_bool ARCH = "sh64"
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
194 prompt "Processor sub-type selection"
200 # SH-2 Processor Support
202 config CPU_SUBTYPE_SH7619
203 bool "Support SH7619 processor"
205 select SYS_SUPPORTS_CMT
207 # SH-2A Processor Support
209 config CPU_SUBTYPE_SH7201
210 bool "Support SH7201 processor"
214 config CPU_SUBTYPE_SH7203
215 bool "Support SH7203 processor"
218 select SYS_SUPPORTS_CMT
220 config CPU_SUBTYPE_SH7206
221 bool "Support SH7206 processor"
223 select SYS_SUPPORTS_CMT
225 config CPU_SUBTYPE_SH7263
226 bool "Support SH7263 processor"
229 select SYS_SUPPORTS_CMT
231 config CPU_SUBTYPE_MXG
232 bool "Support MX-G processor"
235 Select MX-G if running on an R8A03022BG part.
237 # SH-3 Processor Support
239 config CPU_SUBTYPE_SH7705
240 bool "Support SH7705 processor"
243 config CPU_SUBTYPE_SH7706
244 bool "Support SH7706 processor"
247 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
249 config CPU_SUBTYPE_SH7707
250 bool "Support SH7707 processor"
253 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
255 config CPU_SUBTYPE_SH7708
256 bool "Support SH7708 processor"
259 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
260 if you have a 100 Mhz SH-3 HD6417708R CPU.
262 config CPU_SUBTYPE_SH7709
263 bool "Support SH7709 processor"
266 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
268 config CPU_SUBTYPE_SH7710
269 bool "Support SH7710 processor"
273 Select SH7710 if you have a SH3-DSP SH7710 CPU.
275 config CPU_SUBTYPE_SH7712
276 bool "Support SH7712 processor"
280 Select SH7712 if you have a SH3-DSP SH7712 CPU.
282 config CPU_SUBTYPE_SH7720
283 bool "Support SH7720 processor"
287 Select SH7720 if you have a SH3-DSP SH7720 CPU.
289 config CPU_SUBTYPE_SH7721
290 bool "Support SH7721 processor"
294 Select SH7721 if you have a SH3-DSP SH7721 CPU.
296 # SH-4 Processor Support
298 config CPU_SUBTYPE_SH7750
299 bool "Support SH7750 processor"
302 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
304 config CPU_SUBTYPE_SH7091
305 bool "Support SH7091 processor"
308 Select SH7091 if you have an SH-4 based Sega device (such as
309 the Dreamcast, Naomi, and Naomi 2).
311 config CPU_SUBTYPE_SH7750R
312 bool "Support SH7750R processor"
315 config CPU_SUBTYPE_SH7750S
316 bool "Support SH7750S processor"
319 config CPU_SUBTYPE_SH7751
320 bool "Support SH7751 processor"
323 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
324 or if you have a HD6417751R CPU.
326 config CPU_SUBTYPE_SH7751R
327 bool "Support SH7751R processor"
330 config CPU_SUBTYPE_SH7760
331 bool "Support SH7760 processor"
334 config CPU_SUBTYPE_SH4_202
335 bool "Support SH4-202 processor"
338 # SH-4A Processor Support
340 config CPU_SUBTYPE_SH7723
341 bool "Support SH7723 processor"
345 select ARCH_SPARSEMEM_ENABLE
346 select SYS_SUPPORTS_CMT
348 Select SH7723 if you have an SH-MobileR2 CPU.
350 config CPU_SUBTYPE_SH7724
351 bool "Support SH7724 processor"
355 select ARCH_SPARSEMEM_ENABLE
356 select SYS_SUPPORTS_CMT
358 Select SH7724 if you have an SH-MobileR2R CPU.
360 config CPU_SUBTYPE_SH7763
361 bool "Support SH7763 processor"
364 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
366 config CPU_SUBTYPE_SH7770
367 bool "Support SH7770 processor"
370 config CPU_SUBTYPE_SH7780
371 bool "Support SH7780 processor"
374 config CPU_SUBTYPE_SH7785
375 bool "Support SH7785 processor"
378 select ARCH_SPARSEMEM_ENABLE
379 select SYS_SUPPORTS_NUMA
381 config CPU_SUBTYPE_SH7786
382 bool "Support SH7786 processor"
385 select CPU_HAS_PTEAEX
386 select ARCH_SPARSEMEM_ENABLE
387 select SYS_SUPPORTS_NUMA
389 config CPU_SUBTYPE_SHX3
390 bool "Support SH-X3 processor"
393 select ARCH_SPARSEMEM_ENABLE
394 select SYS_SUPPORTS_NUMA
395 select SYS_SUPPORTS_SMP
396 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
398 # SH4AL-DSP Processor Support
400 config CPU_SUBTYPE_SH7343
401 bool "Support SH7343 processor"
404 select SYS_SUPPORTS_CMT
406 config CPU_SUBTYPE_SH7722
407 bool "Support SH7722 processor"
411 select ARCH_SPARSEMEM_ENABLE
412 select SYS_SUPPORTS_NUMA
413 select SYS_SUPPORTS_CMT
415 config CPU_SUBTYPE_SH7366
416 bool "Support SH7366 processor"
420 select ARCH_SPARSEMEM_ENABLE
421 select SYS_SUPPORTS_NUMA
422 select SYS_SUPPORTS_CMT
431 prompt "Processor sub-type selection"
433 # SH-5 Processor Support
435 config CPU_SUBTYPE_SH5_101
436 bool "Support SH5-101 processor"
439 config CPU_SUBTYPE_SH5_103
440 bool "Support SH5-103 processor"
447 source "arch/sh/mm/Kconfig"
449 source "arch/sh/Kconfig.cpu"
451 source "arch/sh/boards/Kconfig"
453 menu "Timer and clock configuration"
456 bool "TMU timer support"
457 depends on CPU_SH3 || CPU_SH4
460 select GENERIC_CLOCKEVENTS
462 This enables the use of the TMU as the system timer.
465 bool "CMT timer support"
466 depends on SYS_SUPPORTS_CMT && CPU_SH2
469 This enables the use of the CMT as the system timer.
472 # Support for the new-style CMT driver. This will replace SH_CMT
473 # once its other dependencies are merged.
476 bool "CMT clockevents driver"
477 depends on SYS_SUPPORTS_CMT && !SH_CMT
478 select GENERIC_CLOCKEVENTS
481 bool "MTU2 timer support"
485 This enables the use of the MTU2 as the system timer.
489 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
491 default "86" if CPU_SUBTYPE_SH7619
492 default "140" if CPU_SUBTYPE_SH7206
493 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
494 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
495 default "238" if CPU_SUBTYPE_MXG
499 int "Peripheral clock frequency (in Hz)"
500 default "27000000" if CPU_SUBTYPE_SH7343
501 default "31250000" if CPU_SUBTYPE_SH7619
502 default "32000000" if CPU_SUBTYPE_SH7722
503 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
504 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
505 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
506 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
508 default "41666666" if CPU_SUBTYPE_SH7724
509 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
510 default "66000000" if CPU_SUBTYPE_SH4_202
513 This option is used to specify the peripheral clock frequency.
514 This is necessary for determining the reference clock value on
515 platforms lacking an RTC.
518 int "CPU Mode Pin Setting"
520 default 6 if CPU_SUBTYPE_SH7206
521 default 5 if CPU_SUBTYPE_SH7619
524 MD2 - MD0 pin setting.
526 source "kernel/time/Kconfig"
530 menu "CPU Frequency scaling"
532 source "drivers/cpufreq/Kconfig"
535 tristate "SuperH CPU Frequency driver"
537 select CPU_FREQ_TABLE
539 This adds the cpufreq driver for SuperH. Any CPU that supports
540 clock rate rounding through the clock framework can use this
541 driver. While it will make the kernel slightly larger, this is
542 harmless for CPUs that don't support rate rounding. The driver
543 will also generate a notice in the boot log before disabling
544 itself if the CPU in question is not capable of rate rounding.
546 For details, take a look at <file:Documentation/cpu-freq>.
552 source "arch/sh/drivers/Kconfig"
556 menu "Kernel features"
558 source kernel/Kconfig.hz
561 bool "kexec system call (EXPERIMENTAL)"
562 depends on SUPERH32 && EXPERIMENTAL && MMU
564 kexec is a system call that implements the ability to shutdown your
565 current kernel, and to start another kernel. It is like a reboot
566 but it is independent of the system firmware. And like a reboot
567 you can start any kernel with it, not just Linux.
569 The name comes from the similarity to the exec system call.
571 It is an ongoing process to be certain the hardware in a machine
572 is properly shutdown, so do not be surprised if this code does not
573 initially work for you. It may help to enable device hotplugging
574 support. As of this writing the exact hardware interface is
575 strongly in flux, so no good recommendation can be made.
578 bool "kernel crash dumps (EXPERIMENTAL)"
579 depends on SUPERH32 && EXPERIMENTAL
581 Generate crash dump after being started by kexec.
582 This should be normally only set in special crash dump kernels
583 which are loaded in the main kernel with kexec-tools into
584 a specially reserved region and then later executed after
585 a crash by kdump/kexec. The crash dump kernel must be compiled
586 to a memory address not used by the main kernel using
589 For more details see Documentation/kdump/kdump.txt
592 bool "kexec jump (EXPERIMENTAL)"
593 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
595 Jump between original kernel and kexeced kernel and invoke
599 bool "Enable seccomp to safely compute untrusted bytecode"
602 This kernel feature is useful for number crunching applications
603 that may need to compute untrusted bytecode during their
604 execution. By using pipes or other transports made available to
605 the process as file descriptors supporting the read/write
606 syscalls, it's possible to isolate those applications in
607 their own address space using seccomp. Once seccomp is
608 enabled via prctl, it cannot be disabled and the task is only
609 allowed to execute a few safe syscalls defined by each seccomp
615 bool "Symmetric multi-processing support"
616 depends on SYS_SUPPORTS_SMP
617 select USE_GENERIC_SMP_HELPERS
619 This enables support for systems with more than one CPU. If you have
620 a system with only one CPU, like most personal computers, say N. If
621 you have a system with more than one CPU, say Y.
623 If you say N here, the kernel will run on single and multiprocessor
624 machines, but will use only one CPU of a multiprocessor machine. If
625 you say Y here, the kernel will run on many, but not all,
626 singleprocessor machines. On a singleprocessor machine, the kernel
627 will run faster if you say N here.
629 People using multiprocessor machines who say Y here should also say
630 Y to "Enhanced Real Time Clock Support", below.
632 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
633 available at <http://www.tldp.org/docs.html#howto>.
635 If you don't know what to do here, say N.
638 int "Maximum number of CPUs (2-32)"
641 default "4" if CPU_SHX3
644 This allows you to specify the maximum number of CPUs which this
645 kernel will support. The maximum supported value is 32 and the
646 minimum value which makes sense is 2.
648 This is purely to save memory - each supported CPU adds
649 approximately eight kilobytes to the kernel image.
651 source "kernel/Kconfig.preempt"
655 depends on !SMP && SUPERH32
657 This enables support for gUSA (general UserSpace Atomicity).
658 This is the default implementation for both UP and non-ll/sc
659 CPUs, and is used by the libc, amongst others.
661 For additional information, design information can be found
662 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
664 This should only be disabled for special cases where alternate
665 atomicity implementations exist.
668 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
669 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
671 Enabling this option will allow the kernel to implement some
672 atomic operations using a software implementation of load-locked/
673 store-conditional (LLSC). On machines which do not have hardware
674 LLSC, this should be more efficient than the other alternative of
675 disabling interrupts around the atomic sequence.
681 config ZERO_PAGE_OFFSET
682 hex "Zero page offset"
683 default "0x00004000" if SH_SH03
684 default "0x00010000" if PAGE_SIZE_64KB
685 default "0x00002000" if PAGE_SIZE_8KB
688 This sets the default offset of zero page.
690 config BOOT_LINK_OFFSET
691 hex "Link address offset for booting"
694 This option allows you to set the link address offset of the zImage.
695 This can be useful if you are on a board which has a small amount of
699 bool "Wakeup UBC on startup"
700 depends on CPU_SH4 && !CPU_SH4A
702 Selecting this option will wakeup the User Break Controller (UBC) on
703 startup. Although the UBC is left in an awake state when the processor
704 comes up, some boot loaders misbehave by putting the UBC to sleep in a
705 power saving state, which causes issues with things like ptrace().
710 bool "Default bootloader kernel arguments"
713 string "Initial kernel command string"
714 depends on CMDLINE_BOOL
715 default "console=ttySC1,115200"
722 tristate "SuperHyway Bus support"
723 depends on CPU_SUBTYPE_SH4_202
726 bool "Maple Bus support"
727 depends on SH_DREAMCAST
729 The Maple Bus is SEGA's serial communication bus for peripherals
730 on the Dreamcast. Without this bus support you won't be able to
731 get your Dreamcast keyboard etc to work, so most users
732 probably want to say 'Y' here, unless you are only using the
733 Dreamcast with a serial line terminal or a remote network
736 source "arch/sh/drivers/pci/Kconfig"
738 source "drivers/pci/pcie/Kconfig"
740 source "drivers/pci/Kconfig"
742 source "drivers/pcmcia/Kconfig"
744 source "drivers/pci/hotplug/Kconfig"
748 menu "Executable file formats"
750 source "fs/Kconfig.binfmt"
754 menu "Power management options (EXPERIMENTAL)"
755 depends on EXPERIMENTAL
757 source "kernel/power/Kconfig"
759 source "drivers/cpuidle/Kconfig"
765 source "drivers/Kconfig"
769 source "arch/sh/Kconfig.debug"
771 source "security/Kconfig"
773 source "crypto/Kconfig"