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
482 bool "MTU2 timer support"
483 depends on CPU_SH2A && !GENERIC_TIME
486 This enables the use of the MTU2 as the system timer.
490 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
492 default "86" if CPU_SUBTYPE_SH7619
493 default "140" if CPU_SUBTYPE_SH7206
494 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
495 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
496 default "238" if CPU_SUBTYPE_MXG
500 int "Peripheral clock frequency (in Hz)"
501 default "27000000" if CPU_SUBTYPE_SH7343
502 default "31250000" if CPU_SUBTYPE_SH7619
503 default "32000000" if CPU_SUBTYPE_SH7722
504 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
505 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
506 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
507 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
509 default "41666666" if CPU_SUBTYPE_SH7724
510 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
511 default "66000000" if CPU_SUBTYPE_SH4_202
514 This option is used to specify the peripheral clock frequency.
515 This is necessary for determining the reference clock value on
516 platforms lacking an RTC.
519 int "CPU Mode Pin Setting"
521 default 6 if CPU_SUBTYPE_SH7206
522 default 5 if CPU_SUBTYPE_SH7619
525 MD2 - MD0 pin setting.
527 source "kernel/time/Kconfig"
531 menu "CPU Frequency scaling"
533 source "drivers/cpufreq/Kconfig"
536 tristate "SuperH CPU Frequency driver"
538 select CPU_FREQ_TABLE
540 This adds the cpufreq driver for SuperH. Any CPU that supports
541 clock rate rounding through the clock framework can use this
542 driver. While it will make the kernel slightly larger, this is
543 harmless for CPUs that don't support rate rounding. The driver
544 will also generate a notice in the boot log before disabling
545 itself if the CPU in question is not capable of rate rounding.
547 For details, take a look at <file:Documentation/cpu-freq>.
553 source "arch/sh/drivers/Kconfig"
557 menu "Kernel features"
559 source kernel/Kconfig.hz
562 bool "kexec system call (EXPERIMENTAL)"
563 depends on SUPERH32 && EXPERIMENTAL && MMU
565 kexec is a system call that implements the ability to shutdown your
566 current kernel, and to start another kernel. It is like a reboot
567 but it is independent of the system firmware. And like a reboot
568 you can start any kernel with it, not just Linux.
570 The name comes from the similarity to the exec system call.
572 It is an ongoing process to be certain the hardware in a machine
573 is properly shutdown, so do not be surprised if this code does not
574 initially work for you. It may help to enable device hotplugging
575 support. As of this writing the exact hardware interface is
576 strongly in flux, so no good recommendation can be made.
579 bool "kernel crash dumps (EXPERIMENTAL)"
580 depends on SUPERH32 && EXPERIMENTAL
582 Generate crash dump after being started by kexec.
583 This should be normally only set in special crash dump kernels
584 which are loaded in the main kernel with kexec-tools into
585 a specially reserved region and then later executed after
586 a crash by kdump/kexec. The crash dump kernel must be compiled
587 to a memory address not used by the main kernel using
590 For more details see Documentation/kdump/kdump.txt
593 bool "kexec jump (EXPERIMENTAL)"
594 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
596 Jump between original kernel and kexeced kernel and invoke
600 bool "Enable seccomp to safely compute untrusted bytecode"
603 This kernel feature is useful for number crunching applications
604 that may need to compute untrusted bytecode during their
605 execution. By using pipes or other transports made available to
606 the process as file descriptors supporting the read/write
607 syscalls, it's possible to isolate those applications in
608 their own address space using seccomp. Once seccomp is
609 enabled via prctl, it cannot be disabled and the task is only
610 allowed to execute a few safe syscalls defined by each seccomp
616 bool "Symmetric multi-processing support"
617 depends on SYS_SUPPORTS_SMP
618 select USE_GENERIC_SMP_HELPERS
620 This enables support for systems with more than one CPU. If you have
621 a system with only one CPU, like most personal computers, say N. If
622 you have a system with more than one CPU, say Y.
624 If you say N here, the kernel will run on single and multiprocessor
625 machines, but will use only one CPU of a multiprocessor machine. If
626 you say Y here, the kernel will run on many, but not all,
627 singleprocessor machines. On a singleprocessor machine, the kernel
628 will run faster if you say N here.
630 People using multiprocessor machines who say Y here should also say
631 Y to "Enhanced Real Time Clock Support", below.
633 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
634 available at <http://www.tldp.org/docs.html#howto>.
636 If you don't know what to do here, say N.
639 int "Maximum number of CPUs (2-32)"
642 default "4" if CPU_SHX3
645 This allows you to specify the maximum number of CPUs which this
646 kernel will support. The maximum supported value is 32 and the
647 minimum value which makes sense is 2.
649 This is purely to save memory - each supported CPU adds
650 approximately eight kilobytes to the kernel image.
652 source "kernel/Kconfig.preempt"
656 depends on !SMP && SUPERH32
658 This enables support for gUSA (general UserSpace Atomicity).
659 This is the default implementation for both UP and non-ll/sc
660 CPUs, and is used by the libc, amongst others.
662 For additional information, design information can be found
663 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
665 This should only be disabled for special cases where alternate
666 atomicity implementations exist.
669 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
670 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
672 Enabling this option will allow the kernel to implement some
673 atomic operations using a software implementation of load-locked/
674 store-conditional (LLSC). On machines which do not have hardware
675 LLSC, this should be more efficient than the other alternative of
676 disabling interrupts around the atomic sequence.
682 config ZERO_PAGE_OFFSET
683 hex "Zero page offset"
684 default "0x00004000" if SH_SH03
685 default "0x00010000" if PAGE_SIZE_64KB
686 default "0x00002000" if PAGE_SIZE_8KB
689 This sets the default offset of zero page.
691 config BOOT_LINK_OFFSET
692 hex "Link address offset for booting"
695 This option allows you to set the link address offset of the zImage.
696 This can be useful if you are on a board which has a small amount of
700 bool "Wakeup UBC on startup"
701 depends on CPU_SH4 && !CPU_SH4A
703 Selecting this option will wakeup the User Break Controller (UBC) on
704 startup. Although the UBC is left in an awake state when the processor
705 comes up, some boot loaders misbehave by putting the UBC to sleep in a
706 power saving state, which causes issues with things like ptrace().
711 bool "Default bootloader kernel arguments"
714 string "Initial kernel command string"
715 depends on CMDLINE_BOOL
716 default "console=ttySC1,115200"
723 tristate "SuperHyway Bus support"
724 depends on CPU_SUBTYPE_SH4_202
727 bool "Maple Bus support"
728 depends on SH_DREAMCAST
730 The Maple Bus is SEGA's serial communication bus for peripherals
731 on the Dreamcast. Without this bus support you won't be able to
732 get your Dreamcast keyboard etc to work, so most users
733 probably want to say 'Y' here, unless you are only using the
734 Dreamcast with a serial line terminal or a remote network
737 source "arch/sh/drivers/pci/Kconfig"
739 source "drivers/pci/pcie/Kconfig"
741 source "drivers/pci/Kconfig"
743 source "drivers/pcmcia/Kconfig"
745 source "drivers/pci/hotplug/Kconfig"
749 menu "Executable file formats"
751 source "fs/Kconfig.binfmt"
755 menu "Power management options (EXPERIMENTAL)"
756 depends on EXPERIMENTAL
758 source "kernel/power/Kconfig"
760 source "drivers/cpuidle/Kconfig"
766 source "drivers/Kconfig"
770 source "arch/sh/Kconfig.debug"
772 source "security/Kconfig"
774 source "crypto/Kconfig"