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
61 depends on SUPERH32 && (!SH_DREAMCAST && !SH_SH4202_MICRODEV && \
62 !SH_7751_SYSTEMH && !HD64461)
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 STACKTRACE_SUPPORT
115 config LOCKDEP_SUPPORT
118 config HAVE_LATENCYTOP_SUPPORT
122 config ARCH_HAS_ILOG2_U32
125 config ARCH_HAS_ILOG2_U64
128 config ARCH_NO_VIRT_TO_BUS
134 source "init/Kconfig"
136 source "kernel/Kconfig.freezer"
152 select CPU_HAS_INTEVT
157 select CPU_HAS_INTEVT
159 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
160 select CPU_HAS_FPU if !CPU_SH4AL_DSP
182 prompt "Processor sub-type selection"
188 # SH-2 Processor Support
190 config CPU_SUBTYPE_SH7619
191 bool "Support SH7619 processor"
194 # SH-2A Processor Support
196 config CPU_SUBTYPE_SH7201
197 bool "Support SH7201 processor"
201 config CPU_SUBTYPE_SH7203
202 bool "Support SH7203 processor"
206 config CPU_SUBTYPE_SH7206
207 bool "Support SH7206 processor"
210 config CPU_SUBTYPE_SH7263
211 bool "Support SH7263 processor"
215 config CPU_SUBTYPE_MXG
216 bool "Support MX-G processor"
219 Select MX-G if running on an R8A03022BG part.
221 # SH-3 Processor Support
223 config CPU_SUBTYPE_SH7705
224 bool "Support SH7705 processor"
227 config CPU_SUBTYPE_SH7706
228 bool "Support SH7706 processor"
231 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
233 config CPU_SUBTYPE_SH7707
234 bool "Support SH7707 processor"
237 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
239 config CPU_SUBTYPE_SH7708
240 bool "Support SH7708 processor"
243 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
244 if you have a 100 Mhz SH-3 HD6417708R CPU.
246 config CPU_SUBTYPE_SH7709
247 bool "Support SH7709 processor"
250 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
252 config CPU_SUBTYPE_SH7710
253 bool "Support SH7710 processor"
257 Select SH7710 if you have a SH3-DSP SH7710 CPU.
259 config CPU_SUBTYPE_SH7712
260 bool "Support SH7712 processor"
264 Select SH7712 if you have a SH3-DSP SH7712 CPU.
266 config CPU_SUBTYPE_SH7720
267 bool "Support SH7720 processor"
271 Select SH7720 if you have a SH3-DSP SH7720 CPU.
273 config CPU_SUBTYPE_SH7721
274 bool "Support SH7721 processor"
278 Select SH7721 if you have a SH3-DSP SH7721 CPU.
280 # SH-4 Processor Support
282 config CPU_SUBTYPE_SH7750
283 bool "Support SH7750 processor"
286 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
288 config CPU_SUBTYPE_SH7091
289 bool "Support SH7091 processor"
292 Select SH7091 if you have an SH-4 based Sega device (such as
293 the Dreamcast, Naomi, and Naomi 2).
295 config CPU_SUBTYPE_SH7750R
296 bool "Support SH7750R processor"
299 config CPU_SUBTYPE_SH7750S
300 bool "Support SH7750S processor"
303 config CPU_SUBTYPE_SH7751
304 bool "Support SH7751 processor"
307 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
308 or if you have a HD6417751R CPU.
310 config CPU_SUBTYPE_SH7751R
311 bool "Support SH7751R processor"
314 config CPU_SUBTYPE_SH7760
315 bool "Support SH7760 processor"
318 config CPU_SUBTYPE_SH4_202
319 bool "Support SH4-202 processor"
322 # SH-4A Processor Support
324 config CPU_SUBTYPE_SH7723
325 bool "Support SH7723 processor"
328 select ARCH_SPARSEMEM_ENABLE
330 Select SH7723 if you have an SH-MobileR2 CPU.
332 config CPU_SUBTYPE_SH7763
333 bool "Support SH7763 processor"
336 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
338 config CPU_SUBTYPE_SH7770
339 bool "Support SH7770 processor"
342 config CPU_SUBTYPE_SH7780
343 bool "Support SH7780 processor"
346 config CPU_SUBTYPE_SH7785
347 bool "Support SH7785 processor"
350 select ARCH_SPARSEMEM_ENABLE
351 select SYS_SUPPORTS_NUMA
353 config CPU_SUBTYPE_SHX3
354 bool "Support SH-X3 processor"
357 select ARCH_SPARSEMEM_ENABLE
358 select SYS_SUPPORTS_NUMA
359 select SYS_SUPPORTS_SMP
360 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
362 # SH4AL-DSP Processor Support
364 config CPU_SUBTYPE_SH7343
365 bool "Support SH7343 processor"
368 config CPU_SUBTYPE_SH7722
369 bool "Support SH7722 processor"
372 select ARCH_SPARSEMEM_ENABLE
373 select SYS_SUPPORTS_NUMA
375 config CPU_SUBTYPE_SH7366
376 bool "Support SH7366 processor"
379 select ARCH_SPARSEMEM_ENABLE
380 select SYS_SUPPORTS_NUMA
382 # SH-5 Processor Support
384 config CPU_SUBTYPE_SH5_101
385 bool "Support SH5-101 processor"
388 config CPU_SUBTYPE_SH5_103
389 bool "Support SH5-103 processor"
394 source "arch/sh/mm/Kconfig"
396 source "arch/sh/Kconfig.cpu"
398 source "arch/sh/boards/Kconfig"
400 menu "Timer and clock configuration"
404 prompt "TMU timer support"
405 depends on CPU_SH3 || CPU_SH4
407 select GENERIC_CLOCKEVENTS
409 This enables the use of the TMU as the system timer.
413 prompt "CMT timer support"
414 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
416 This enables the use of the CMT as the system timer.
420 prompt "MTU2 timer support"
423 This enables the use of the MTU2 as the system timer.
427 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
429 default "86" if CPU_SUBTYPE_SH7619
430 default "140" if CPU_SUBTYPE_SH7206
431 default "142" if CPU_SUBTYPE_SH7203
432 default "238" if CPU_SUBTYPE_MXG
436 int "Peripheral clock frequency (in Hz)"
437 default "27000000" if CPU_SUBTYPE_SH7343
438 default "31250000" if CPU_SUBTYPE_SH7619
439 default "32000000" if CPU_SUBTYPE_SH7722
440 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
441 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
442 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
443 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
444 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
445 default "66000000" if CPU_SUBTYPE_SH4_202
448 This option is used to specify the peripheral clock frequency.
449 This is necessary for determining the reference clock value on
450 platforms lacking an RTC.
453 int "CPU Mode Pin Setting"
455 default 6 if CPU_SUBTYPE_SH7206
456 default 5 if CPU_SUBTYPE_SH7619
459 MD2 - MD0 pin setting.
461 source "kernel/time/Kconfig"
465 menu "CPU Frequency scaling"
467 source "drivers/cpufreq/Kconfig"
470 tristate "SuperH CPU Frequency driver"
472 select CPU_FREQ_TABLE
474 This adds the cpufreq driver for SuperH. At present, only
475 the SH-4 is supported.
477 For details, take a look at <file:Documentation/cpu-freq>.
483 source "arch/sh/drivers/Kconfig"
490 menu "Kernel features"
492 source kernel/Kconfig.hz
495 bool "kexec system call (EXPERIMENTAL)"
496 depends on SUPERH32 && EXPERIMENTAL
498 kexec is a system call that implements the ability to shutdown your
499 current kernel, and to start another kernel. It is like a reboot
500 but it is independent of the system firmware. And like a reboot
501 you can start any kernel with it, not just Linux.
503 The name comes from the similarity to the exec system call.
505 It is an ongoing process to be certain the hardware in a machine
506 is properly shutdown, so do not be surprised if this code does not
507 initially work for you. It may help to enable device hotplugging
508 support. As of this writing the exact hardware interface is
509 strongly in flux, so no good recommendation can be made.
512 bool "kernel crash dumps (EXPERIMENTAL)"
513 depends on SUPERH32 && EXPERIMENTAL
515 Generate crash dump after being started by kexec.
516 This should be normally only set in special crash dump kernels
517 which are loaded in the main kernel with kexec-tools into
518 a specially reserved region and then later executed after
519 a crash by kdump/kexec. The crash dump kernel must be compiled
520 to a memory address not used by the main kernel using
523 For more details see Documentation/kdump/kdump.txt
526 bool "Enable seccomp to safely compute untrusted bytecode"
529 This kernel feature is useful for number crunching applications
530 that may need to compute untrusted bytecode during their
531 execution. By using pipes or other transports made available to
532 the process as file descriptors supporting the read/write
533 syscalls, it's possible to isolate those applications in
534 their own address space using seccomp. Once seccomp is
535 enabled via prctl, it cannot be disabled and the task is only
536 allowed to execute a few safe syscalls defined by each seccomp
542 bool "Symmetric multi-processing support"
543 depends on SYS_SUPPORTS_SMP
544 select USE_GENERIC_SMP_HELPERS
546 This enables support for systems with more than one CPU. If you have
547 a system with only one CPU, like most personal computers, say N. If
548 you have a system with more than one CPU, say Y.
550 If you say N here, the kernel will run on single and multiprocessor
551 machines, but will use only one CPU of a multiprocessor machine. If
552 you say Y here, the kernel will run on many, but not all,
553 singleprocessor machines. On a singleprocessor machine, the kernel
554 will run faster if you say N here.
556 People using multiprocessor machines who say Y here should also say
557 Y to "Enhanced Real Time Clock Support", below.
559 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
560 available at <http://www.tldp.org/docs.html#howto>.
562 If you don't know what to do here, say N.
565 int "Maximum number of CPUs (2-32)"
568 default "4" if CPU_SHX3
571 This allows you to specify the maximum number of CPUs which this
572 kernel will support. The maximum supported value is 32 and the
573 minimum value which makes sense is 2.
575 This is purely to save memory - each supported CPU adds
576 approximately eight kilobytes to the kernel image.
578 source "kernel/Kconfig.preempt"
582 depends on !SMP && SUPERH32
584 This enables support for gUSA (general UserSpace Atomicity).
585 This is the default implementation for both UP and non-ll/sc
586 CPUs, and is used by the libc, amongst others.
588 For additional information, design information can be found
589 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
591 This should only be disabled for special cases where alternate
592 atomicity implementations exist.
595 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
596 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
598 Enabling this option will allow the kernel to implement some
599 atomic operations using a software implemention of load-locked/
600 store-conditional (LLSC). On machines which do not have hardware
601 LLSC, this should be more efficient than the other alternative of
602 disabling insterrupts around the atomic sequence.
608 config ZERO_PAGE_OFFSET
609 hex "Zero page offset"
610 default "0x00004000" if SH_SH03
611 default "0x00010000" if PAGE_SIZE_64KB
612 default "0x00002000" if PAGE_SIZE_8KB
615 This sets the default offset of zero page.
617 config BOOT_LINK_OFFSET
618 hex "Link address offset for booting"
621 This option allows you to set the link address offset of the zImage.
622 This can be useful if you are on a board which has a small amount of
626 bool "Wakeup UBC on startup"
627 depends on CPU_SH4 && !CPU_SH4A
629 Selecting this option will wakeup the User Break Controller (UBC) on
630 startup. Although the UBC is left in an awake state when the processor
631 comes up, some boot loaders misbehave by putting the UBC to sleep in a
632 power saving state, which causes issues with things like ptrace().
637 bool "Default bootloader kernel arguments"
640 string "Initial kernel command string"
641 depends on CMDLINE_BOOL
642 default "console=ttySC1,115200"
648 # Even on SuperH devices which don't have an ISA bus,
649 # this variable helps the PCMCIA modules handle
650 # IRQ requesting properly -- Greg Banks.
652 # Though we're generally not interested in it when
653 # we're not using PCMCIA, so we make it dependent on
654 # PCMCIA outright. -- PFM.
657 depends on PCMCIA && HD6446X_SERIES
659 Find out whether you have ISA slots on your motherboard. ISA is the
660 name of a bus system, i.e. the way the CPU talks to the other stuff
661 inside your box. Other bus systems are PCI, EISA, MicroChannel
662 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
663 newer boards don't support it. If you have ISA, say Y, otherwise N.
668 The Extended Industry Standard Architecture (EISA) bus was
669 developed as an open alternative to the IBM MicroChannel bus.
671 The EISA bus provided some of the features of the IBM MicroChannel
672 bus while maintaining backward compatibility with cards made for
673 the older ISA bus. The EISA bus saw limited use between 1988 and
674 1995 when it was made obsolete by the PCI bus.
676 Say Y here if you are building a kernel for an EISA-based machine.
683 MicroChannel Architecture is found in some IBM PS/2 machines and
684 laptops. It is a bus system similar to PCI or ISA. See
685 <file:Documentation/mca.txt> (and especially the web page given
686 there) before attempting to build an MCA bus kernel.
692 tristate "SuperHyway Bus support"
693 depends on CPU_SUBTYPE_SH4_202
696 bool "Maple Bus support"
697 depends on SH_DREAMCAST
699 The Maple Bus is SEGA's serial communication bus for peripherals
700 on the Dreamcast. Without this bus support you won't be able to
701 get your Dreamcast keyboard etc to work, so most users
702 probably want to say 'Y' here, unless you are only using the
703 Dreamcast with a serial line terminal or a remote network
707 bool "Compact Flash Enabler support"
708 depends on SOLUTION_ENGINE || SH_SH03
710 Compact Flash is a small, removable mass storage device introduced
711 in 1994 originally as a PCMCIA device. If you say `Y' here, you
712 compile in support for Compact Flash devices directly connected to
713 a SuperH processor. A Compact Flash FAQ is available at
714 <http://www.compactflash.org/faqs/faq.htm>.
716 If your board has "Directly Connected" CompactFlash at area 5 or 6,
717 you may want to enable this option. Then, you can use CF as
718 primary IDE drive (only tested for SanDisk).
720 If in doubt, select 'N'.
723 prompt "Compact Flash Connection Area"
724 depends on CF_ENABLER
730 If your board has "Directly Connected" CompactFlash, You should
731 select the area where your CF is connected to.
733 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
734 - "Area6" if it is connected to Area 6 (0x18000000)
736 "Area6" will work for most boards.
745 depends on CF_ENABLER
746 default "0xb8000000" if CF_AREA6
747 default "0xb4000000" if CF_AREA5
749 source "arch/sh/drivers/pci/Kconfig"
751 source "drivers/pci/Kconfig"
753 source "drivers/pcmcia/Kconfig"
755 source "drivers/pci/hotplug/Kconfig"
759 menu "Executable file formats"
761 source "fs/Kconfig.binfmt"
765 menu "Power management options (EXPERIMENTAL)"
766 depends on EXPERIMENTAL
768 source "kernel/power/Kconfig"
770 source "drivers/cpuidle/Kconfig"
776 source "drivers/Kconfig"
780 source "arch/sh/Kconfig.debug"
782 source "security/Kconfig"
784 source "crypto/Kconfig"