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 STACKTRACE_SUPPORT
113 config LOCKDEP_SUPPORT
116 config HAVE_LATENCYTOP_SUPPORT
120 config ARCH_HAS_ILOG2_U32
123 config ARCH_HAS_ILOG2_U64
126 config ARCH_NO_VIRT_TO_BUS
132 source "init/Kconfig"
134 source "kernel/Kconfig.freezer"
150 select CPU_HAS_INTEVT
155 select CPU_HAS_INTEVT
157 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
158 select CPU_HAS_FPU if !CPU_SH4AL_DSP
180 prompt "Processor sub-type selection"
186 # SH-2 Processor Support
188 config CPU_SUBTYPE_SH7619
189 bool "Support SH7619 processor"
192 # SH-2A Processor Support
194 config CPU_SUBTYPE_SH7201
195 bool "Support SH7201 processor"
199 config CPU_SUBTYPE_SH7203
200 bool "Support SH7203 processor"
204 config CPU_SUBTYPE_SH7206
205 bool "Support SH7206 processor"
208 config CPU_SUBTYPE_SH7263
209 bool "Support SH7263 processor"
213 config CPU_SUBTYPE_MXG
214 bool "Support MX-G processor"
217 Select MX-G if running on an R8A03022BG part.
219 # SH-3 Processor Support
221 config CPU_SUBTYPE_SH7705
222 bool "Support SH7705 processor"
225 config CPU_SUBTYPE_SH7706
226 bool "Support SH7706 processor"
229 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
231 config CPU_SUBTYPE_SH7707
232 bool "Support SH7707 processor"
235 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
237 config CPU_SUBTYPE_SH7708
238 bool "Support SH7708 processor"
241 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
242 if you have a 100 Mhz SH-3 HD6417708R CPU.
244 config CPU_SUBTYPE_SH7709
245 bool "Support SH7709 processor"
248 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
250 config CPU_SUBTYPE_SH7710
251 bool "Support SH7710 processor"
255 Select SH7710 if you have a SH3-DSP SH7710 CPU.
257 config CPU_SUBTYPE_SH7712
258 bool "Support SH7712 processor"
262 Select SH7712 if you have a SH3-DSP SH7712 CPU.
264 config CPU_SUBTYPE_SH7720
265 bool "Support SH7720 processor"
269 Select SH7720 if you have a SH3-DSP SH7720 CPU.
271 config CPU_SUBTYPE_SH7721
272 bool "Support SH7721 processor"
276 Select SH7721 if you have a SH3-DSP SH7721 CPU.
278 # SH-4 Processor Support
280 config CPU_SUBTYPE_SH7750
281 bool "Support SH7750 processor"
284 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
286 config CPU_SUBTYPE_SH7091
287 bool "Support SH7091 processor"
290 Select SH7091 if you have an SH-4 based Sega device (such as
291 the Dreamcast, Naomi, and Naomi 2).
293 config CPU_SUBTYPE_SH7750R
294 bool "Support SH7750R processor"
297 config CPU_SUBTYPE_SH7750S
298 bool "Support SH7750S processor"
301 config CPU_SUBTYPE_SH7751
302 bool "Support SH7751 processor"
305 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
306 or if you have a HD6417751R CPU.
308 config CPU_SUBTYPE_SH7751R
309 bool "Support SH7751R processor"
312 config CPU_SUBTYPE_SH7760
313 bool "Support SH7760 processor"
316 config CPU_SUBTYPE_SH4_202
317 bool "Support SH4-202 processor"
320 # SH-4A Processor Support
322 config CPU_SUBTYPE_SH7723
323 bool "Support SH7723 processor"
326 select ARCH_SPARSEMEM_ENABLE
328 Select SH7723 if you have an SH-MobileR2 CPU.
330 config CPU_SUBTYPE_SH7763
331 bool "Support SH7763 processor"
334 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
336 config CPU_SUBTYPE_SH7770
337 bool "Support SH7770 processor"
340 config CPU_SUBTYPE_SH7780
341 bool "Support SH7780 processor"
344 config CPU_SUBTYPE_SH7785
345 bool "Support SH7785 processor"
348 select ARCH_SPARSEMEM_ENABLE
349 select SYS_SUPPORTS_NUMA
351 config CPU_SUBTYPE_SHX3
352 bool "Support SH-X3 processor"
355 select ARCH_SPARSEMEM_ENABLE
356 select SYS_SUPPORTS_NUMA
357 select SYS_SUPPORTS_SMP
358 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
360 # SH4AL-DSP Processor Support
362 config CPU_SUBTYPE_SH7343
363 bool "Support SH7343 processor"
366 config CPU_SUBTYPE_SH7722
367 bool "Support SH7722 processor"
370 select ARCH_SPARSEMEM_ENABLE
371 select SYS_SUPPORTS_NUMA
373 config CPU_SUBTYPE_SH7366
374 bool "Support SH7366 processor"
377 select ARCH_SPARSEMEM_ENABLE
378 select SYS_SUPPORTS_NUMA
380 # SH-5 Processor Support
382 config CPU_SUBTYPE_SH5_101
383 bool "Support SH5-101 processor"
386 config CPU_SUBTYPE_SH5_103
387 bool "Support SH5-103 processor"
392 source "arch/sh/mm/Kconfig"
394 source "arch/sh/Kconfig.cpu"
396 source "arch/sh/boards/Kconfig"
398 menu "Timer and clock configuration"
402 prompt "TMU timer support"
403 depends on CPU_SH3 || CPU_SH4
405 select GENERIC_CLOCKEVENTS
407 This enables the use of the TMU as the system timer.
411 prompt "CMT timer support"
412 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
414 This enables the use of the CMT as the system timer.
418 prompt "MTU2 timer support"
421 This enables the use of the MTU2 as the system timer.
425 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
427 default "86" if CPU_SUBTYPE_SH7619
428 default "140" if CPU_SUBTYPE_SH7206
429 default "142" if CPU_SUBTYPE_SH7203
430 default "238" if CPU_SUBTYPE_MXG
434 int "Peripheral clock frequency (in Hz)"
435 default "27000000" if CPU_SUBTYPE_SH7343
436 default "31250000" if CPU_SUBTYPE_SH7619
437 default "32000000" if CPU_SUBTYPE_SH7722
438 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
439 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
440 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
441 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
442 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
443 default "66000000" if CPU_SUBTYPE_SH4_202
446 This option is used to specify the peripheral clock frequency.
447 This is necessary for determining the reference clock value on
448 platforms lacking an RTC.
451 int "CPU Mode Pin Setting"
453 default 6 if CPU_SUBTYPE_SH7206
454 default 5 if CPU_SUBTYPE_SH7619
457 MD2 - MD0 pin setting.
459 source "kernel/time/Kconfig"
463 menu "CPU Frequency scaling"
465 source "drivers/cpufreq/Kconfig"
468 tristate "SuperH CPU Frequency driver"
470 select CPU_FREQ_TABLE
472 This adds the cpufreq driver for SuperH. At present, only
473 the SH-4 is supported.
475 For details, take a look at <file:Documentation/cpu-freq>.
481 source "arch/sh/drivers/Kconfig"
488 menu "Kernel features"
490 source kernel/Kconfig.hz
493 bool "kexec system call (EXPERIMENTAL)"
494 depends on SUPERH32 && EXPERIMENTAL
496 kexec is a system call that implements the ability to shutdown your
497 current kernel, and to start another kernel. It is like a reboot
498 but it is independent of the system firmware. And like a reboot
499 you can start any kernel with it, not just Linux.
501 The name comes from the similarity to the exec system call.
503 It is an ongoing process to be certain the hardware in a machine
504 is properly shutdown, so do not be surprised if this code does not
505 initially work for you. It may help to enable device hotplugging
506 support. As of this writing the exact hardware interface is
507 strongly in flux, so no good recommendation can be made.
510 bool "kernel crash dumps (EXPERIMENTAL)"
511 depends on SUPERH32 && EXPERIMENTAL
513 Generate crash dump after being started by kexec.
514 This should be normally only set in special crash dump kernels
515 which are loaded in the main kernel with kexec-tools into
516 a specially reserved region and then later executed after
517 a crash by kdump/kexec. The crash dump kernel must be compiled
518 to a memory address not used by the main kernel using
521 For more details see Documentation/kdump/kdump.txt
524 bool "Enable seccomp to safely compute untrusted bytecode"
527 This kernel feature is useful for number crunching applications
528 that may need to compute untrusted bytecode during their
529 execution. By using pipes or other transports made available to
530 the process as file descriptors supporting the read/write
531 syscalls, it's possible to isolate those applications in
532 their own address space using seccomp. Once seccomp is
533 enabled via prctl, it cannot be disabled and the task is only
534 allowed to execute a few safe syscalls defined by each seccomp
540 bool "Symmetric multi-processing support"
541 depends on SYS_SUPPORTS_SMP
542 select USE_GENERIC_SMP_HELPERS
544 This enables support for systems with more than one CPU. If you have
545 a system with only one CPU, like most personal computers, say N. If
546 you have a system with more than one CPU, say Y.
548 If you say N here, the kernel will run on single and multiprocessor
549 machines, but will use only one CPU of a multiprocessor machine. If
550 you say Y here, the kernel will run on many, but not all,
551 singleprocessor machines. On a singleprocessor machine, the kernel
552 will run faster if you say N here.
554 People using multiprocessor machines who say Y here should also say
555 Y to "Enhanced Real Time Clock Support", below.
557 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
558 available at <http://www.tldp.org/docs.html#howto>.
560 If you don't know what to do here, say N.
563 int "Maximum number of CPUs (2-32)"
566 default "4" if CPU_SHX3
569 This allows you to specify the maximum number of CPUs which this
570 kernel will support. The maximum supported value is 32 and the
571 minimum value which makes sense is 2.
573 This is purely to save memory - each supported CPU adds
574 approximately eight kilobytes to the kernel image.
576 source "kernel/Kconfig.preempt"
580 depends on !SMP && SUPERH32
582 This enables support for gUSA (general UserSpace Atomicity).
583 This is the default implementation for both UP and non-ll/sc
584 CPUs, and is used by the libc, amongst others.
586 For additional information, design information can be found
587 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
589 This should only be disabled for special cases where alternate
590 atomicity implementations exist.
593 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
594 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
596 Enabling this option will allow the kernel to implement some
597 atomic operations using a software implemention of load-locked/
598 store-conditional (LLSC). On machines which do not have hardware
599 LLSC, this should be more efficient than the other alternative of
600 disabling insterrupts around the atomic sequence.
606 config ZERO_PAGE_OFFSET
607 hex "Zero page offset"
608 default "0x00004000" if SH_SH03
609 default "0x00010000" if PAGE_SIZE_64KB
610 default "0x00002000" if PAGE_SIZE_8KB
613 This sets the default offset of zero page.
615 config BOOT_LINK_OFFSET
616 hex "Link address offset for booting"
619 This option allows you to set the link address offset of the zImage.
620 This can be useful if you are on a board which has a small amount of
624 bool "Wakeup UBC on startup"
625 depends on CPU_SH4 && !CPU_SH4A
627 Selecting this option will wakeup the User Break Controller (UBC) on
628 startup. Although the UBC is left in an awake state when the processor
629 comes up, some boot loaders misbehave by putting the UBC to sleep in a
630 power saving state, which causes issues with things like ptrace().
635 bool "Default bootloader kernel arguments"
638 string "Initial kernel command string"
639 depends on CMDLINE_BOOL
640 default "console=ttySC1,115200"
646 # Even on SuperH devices which don't have an ISA bus,
647 # this variable helps the PCMCIA modules handle
648 # IRQ requesting properly -- Greg Banks.
650 # Though we're generally not interested in it when
651 # we're not using PCMCIA, so we make it dependent on
652 # PCMCIA outright. -- PFM.
655 depends on PCMCIA && HD6446X_SERIES
657 Find out whether you have ISA slots on your motherboard. ISA is the
658 name of a bus system, i.e. the way the CPU talks to the other stuff
659 inside your box. Other bus systems are PCI, EISA, MicroChannel
660 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
661 newer boards don't support it. If you have ISA, say Y, otherwise N.
666 The Extended Industry Standard Architecture (EISA) bus was
667 developed as an open alternative to the IBM MicroChannel bus.
669 The EISA bus provided some of the features of the IBM MicroChannel
670 bus while maintaining backward compatibility with cards made for
671 the older ISA bus. The EISA bus saw limited use between 1988 and
672 1995 when it was made obsolete by the PCI bus.
674 Say Y here if you are building a kernel for an EISA-based machine.
681 MicroChannel Architecture is found in some IBM PS/2 machines and
682 laptops. It is a bus system similar to PCI or ISA. See
683 <file:Documentation/mca.txt> (and especially the web page given
684 there) before attempting to build an MCA bus kernel.
690 tristate "SuperHyway Bus support"
691 depends on CPU_SUBTYPE_SH4_202
694 bool "Maple Bus support"
695 depends on SH_DREAMCAST
697 The Maple Bus is SEGA's serial communication bus for peripherals
698 on the Dreamcast. Without this bus support you won't be able to
699 get your Dreamcast keyboard etc to work, so most users
700 probably want to say 'Y' here, unless you are only using the
701 Dreamcast with a serial line terminal or a remote network
705 bool "Compact Flash Enabler support"
706 depends on SOLUTION_ENGINE
708 Compact Flash is a small, removable mass storage device introduced
709 in 1994 originally as a PCMCIA device. If you say `Y' here, you
710 compile in support for Compact Flash devices directly connected to
711 a SuperH processor. A Compact Flash FAQ is available at
712 <http://www.compactflash.org/faqs/faq.htm>.
714 If your board has "Directly Connected" CompactFlash at area 5 or 6,
715 you may want to enable this option. Then, you can use CF as
716 primary IDE drive (only tested for SanDisk).
718 If in doubt, select 'N'.
721 prompt "Compact Flash Connection Area"
722 depends on CF_ENABLER
728 If your board has "Directly Connected" CompactFlash, You should
729 select the area where your CF is connected to.
731 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
732 - "Area6" if it is connected to Area 6 (0x18000000)
734 "Area6" will work for most boards.
743 depends on CF_ENABLER
744 default "0xb8000000" if CF_AREA6
745 default "0xb4000000" if CF_AREA5
747 source "arch/sh/drivers/pci/Kconfig"
749 source "drivers/pci/Kconfig"
751 source "drivers/pcmcia/Kconfig"
753 source "drivers/pci/hotplug/Kconfig"
757 menu "Executable file formats"
759 source "fs/Kconfig.binfmt"
763 menu "Power management options (EXPERIMENTAL)"
764 depends on EXPERIMENTAL
766 source "kernel/power/Kconfig"
768 source "drivers/cpuidle/Kconfig"
774 source "drivers/Kconfig"
778 source "arch/sh/Kconfig.debug"
780 source "security/Kconfig"
782 source "crypto/Kconfig"