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
17 The SuperH is a RISC processor targeted for use in embedded systems
18 and consumer electronics; it was also used in the Sega Dreamcast
19 gaming console. The SuperH port has a home page at
20 <http://www.linux-sh.org/>.
25 select HAVE_KRETPROBES
26 select HAVE_ARCH_TRACEHOOK
27 select HAVE_FUNCTION_TRACER
34 default "arch/sh/configs/shx3_defconfig" if SUPERH32
35 default "arch/sh/configs/cayman_defconfig" if SUPERH64
37 config RWSEM_GENERIC_SPINLOCK
40 config RWSEM_XCHGADD_ALGORITHM
45 depends on BUG && SUPERH32
47 config GENERIC_FIND_NEXT_BIT
50 config GENERIC_HWEIGHT
53 config GENERIC_HARDIRQS
56 config GENERIC_HARDIRQS_NO__DO_IRQ
59 config GENERIC_IRQ_PROBE
65 config GENERIC_CALIBRATE_DELAY
74 config GENERIC_CLOCKEVENTS
77 config GENERIC_CLOCKEVENTS_BROADCAST
80 config GENERIC_LOCKBREAK
82 depends on SMP && PREEMPT
84 config SYS_SUPPORTS_PM
87 config SYS_SUPPORTS_APM_EMULATION
89 select SYS_SUPPORTS_PM
91 config SYS_SUPPORTS_SMP
94 config SYS_SUPPORTS_NUMA
97 config SYS_SUPPORTS_PCI
100 config STACKTRACE_SUPPORT
103 config LOCKDEP_SUPPORT
106 config HAVE_LATENCYTOP_SUPPORT
110 config ARCH_HAS_ILOG2_U32
113 config ARCH_HAS_ILOG2_U64
116 config ARCH_NO_VIRT_TO_BUS
122 source "init/Kconfig"
124 source "kernel/Kconfig.freezer"
140 select CPU_HAS_INTEVT
145 select CPU_HAS_INTEVT
147 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
148 select CPU_HAS_FPU if !CPU_SH4AL_DSP
170 prompt "Processor sub-type selection"
176 # SH-2 Processor Support
178 config CPU_SUBTYPE_SH7619
179 bool "Support SH7619 processor"
182 # SH-2A Processor Support
184 config CPU_SUBTYPE_SH7203
185 bool "Support SH7203 processor"
189 config CPU_SUBTYPE_SH7206
190 bool "Support SH7206 processor"
193 config CPU_SUBTYPE_SH7263
194 bool "Support SH7263 processor"
198 config CPU_SUBTYPE_MXG
199 bool "Support MX-G processor"
202 Select MX-G if running on an R8A03022BG part.
204 # SH-3 Processor Support
206 config CPU_SUBTYPE_SH7705
207 bool "Support SH7705 processor"
210 config CPU_SUBTYPE_SH7706
211 bool "Support SH7706 processor"
214 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
216 config CPU_SUBTYPE_SH7707
217 bool "Support SH7707 processor"
220 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
222 config CPU_SUBTYPE_SH7708
223 bool "Support SH7708 processor"
226 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
227 if you have a 100 Mhz SH-3 HD6417708R CPU.
229 config CPU_SUBTYPE_SH7709
230 bool "Support SH7709 processor"
233 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
235 config CPU_SUBTYPE_SH7710
236 bool "Support SH7710 processor"
240 Select SH7710 if you have a SH3-DSP SH7710 CPU.
242 config CPU_SUBTYPE_SH7712
243 bool "Support SH7712 processor"
247 Select SH7712 if you have a SH3-DSP SH7712 CPU.
249 config CPU_SUBTYPE_SH7720
250 bool "Support SH7720 processor"
254 Select SH7720 if you have a SH3-DSP SH7720 CPU.
256 config CPU_SUBTYPE_SH7721
257 bool "Support SH7721 processor"
261 Select SH7721 if you have a SH3-DSP SH7721 CPU.
263 # SH-4 Processor Support
265 config CPU_SUBTYPE_SH7750
266 bool "Support SH7750 processor"
269 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
271 config CPU_SUBTYPE_SH7091
272 bool "Support SH7091 processor"
275 Select SH7091 if you have an SH-4 based Sega device (such as
276 the Dreamcast, Naomi, and Naomi 2).
278 config CPU_SUBTYPE_SH7750R
279 bool "Support SH7750R processor"
282 config CPU_SUBTYPE_SH7750S
283 bool "Support SH7750S processor"
286 config CPU_SUBTYPE_SH7751
287 bool "Support SH7751 processor"
290 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
291 or if you have a HD6417751R CPU.
293 config CPU_SUBTYPE_SH7751R
294 bool "Support SH7751R processor"
297 config CPU_SUBTYPE_SH7760
298 bool "Support SH7760 processor"
301 config CPU_SUBTYPE_SH4_202
302 bool "Support SH4-202 processor"
305 # SH-4A Processor Support
307 config CPU_SUBTYPE_SH7723
308 bool "Support SH7723 processor"
311 select ARCH_SPARSEMEM_ENABLE
313 Select SH7723 if you have an SH-MobileR2 CPU.
315 config CPU_SUBTYPE_SH7763
316 bool "Support SH7763 processor"
319 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
321 config CPU_SUBTYPE_SH7770
322 bool "Support SH7770 processor"
325 config CPU_SUBTYPE_SH7780
326 bool "Support SH7780 processor"
329 config CPU_SUBTYPE_SH7785
330 bool "Support SH7785 processor"
333 select ARCH_SPARSEMEM_ENABLE
334 select SYS_SUPPORTS_NUMA
336 config CPU_SUBTYPE_SHX3
337 bool "Support SH-X3 processor"
340 select ARCH_SPARSEMEM_ENABLE
341 select SYS_SUPPORTS_NUMA
342 select SYS_SUPPORTS_SMP
343 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
345 # SH4AL-DSP Processor Support
347 config CPU_SUBTYPE_SH7343
348 bool "Support SH7343 processor"
351 config CPU_SUBTYPE_SH7722
352 bool "Support SH7722 processor"
355 select ARCH_SPARSEMEM_ENABLE
356 select SYS_SUPPORTS_NUMA
358 config CPU_SUBTYPE_SH7366
359 bool "Support SH7366 processor"
362 select ARCH_SPARSEMEM_ENABLE
363 select SYS_SUPPORTS_NUMA
365 # SH-5 Processor Support
367 config CPU_SUBTYPE_SH5_101
368 bool "Support SH5-101 processor"
371 config CPU_SUBTYPE_SH5_103
372 bool "Support SH5-103 processor"
377 source "arch/sh/mm/Kconfig"
379 source "arch/sh/Kconfig.cpu"
381 source "arch/sh/boards/Kconfig"
383 menu "Timer and clock configuration"
387 prompt "TMU timer support"
388 depends on CPU_SH3 || CPU_SH4
390 select GENERIC_CLOCKEVENTS
392 This enables the use of the TMU as the system timer.
396 prompt "CMT timer support"
397 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
399 This enables the use of the CMT as the system timer.
403 prompt "MTU2 timer support"
406 This enables the use of the MTU2 as the system timer.
410 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
412 default "86" if CPU_SUBTYPE_SH7619
413 default "140" if CPU_SUBTYPE_SH7206
414 default "142" if CPU_SUBTYPE_SH7203
415 default "238" if CPU_SUBTYPE_MXG
419 int "Peripheral clock frequency (in Hz)"
420 default "27000000" if CPU_SUBTYPE_SH7343
421 default "31250000" if CPU_SUBTYPE_SH7619
422 default "32000000" if CPU_SUBTYPE_SH7722
423 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
424 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
425 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
426 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
427 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
428 default "66000000" if CPU_SUBTYPE_SH4_202
431 This option is used to specify the peripheral clock frequency.
432 This is necessary for determining the reference clock value on
433 platforms lacking an RTC.
436 int "CPU Mode Pin Setting"
438 default 6 if CPU_SUBTYPE_SH7206
439 default 5 if CPU_SUBTYPE_SH7619
442 MD2 - MD0 pin setting.
444 source "kernel/time/Kconfig"
448 menu "CPU Frequency scaling"
450 source "drivers/cpufreq/Kconfig"
453 tristate "SuperH CPU Frequency driver"
455 select CPU_FREQ_TABLE
457 This adds the cpufreq driver for SuperH. At present, only
458 the SH-4 is supported.
460 For details, take a look at <file:Documentation/cpu-freq>.
466 source "arch/sh/drivers/Kconfig"
473 menu "Kernel features"
475 source kernel/Kconfig.hz
478 bool "kexec system call (EXPERIMENTAL)"
479 depends on SUPERH32 && EXPERIMENTAL
481 kexec is a system call that implements the ability to shutdown your
482 current kernel, and to start another kernel. It is like a reboot
483 but it is independent of the system firmware. And like a reboot
484 you can start any kernel with it, not just Linux.
486 The name comes from the similarity to the exec system call.
488 It is an ongoing process to be certain the hardware in a machine
489 is properly shutdown, so do not be surprised if this code does not
490 initially work for you. It may help to enable device hotplugging
491 support. As of this writing the exact hardware interface is
492 strongly in flux, so no good recommendation can be made.
495 bool "kernel crash dumps (EXPERIMENTAL)"
496 depends on SUPERH32 && EXPERIMENTAL
498 Generate crash dump after being started by kexec.
499 This should be normally only set in special crash dump kernels
500 which are loaded in the main kernel with kexec-tools into
501 a specially reserved region and then later executed after
502 a crash by kdump/kexec. The crash dump kernel must be compiled
503 to a memory address not used by the main kernel using
506 For more details see Documentation/kdump/kdump.txt
509 bool "Enable seccomp to safely compute untrusted bytecode"
512 This kernel feature is useful for number crunching applications
513 that may need to compute untrusted bytecode during their
514 execution. By using pipes or other transports made available to
515 the process as file descriptors supporting the read/write
516 syscalls, it's possible to isolate those applications in
517 their own address space using seccomp. Once seccomp is
518 enabled via prctl, it cannot be disabled and the task is only
519 allowed to execute a few safe syscalls defined by each seccomp
525 bool "Symmetric multi-processing support"
526 depends on SYS_SUPPORTS_SMP
527 select USE_GENERIC_SMP_HELPERS
529 This enables support for systems with more than one CPU. If you have
530 a system with only one CPU, like most personal computers, say N. If
531 you have a system with more than one CPU, say Y.
533 If you say N here, the kernel will run on single and multiprocessor
534 machines, but will use only one CPU of a multiprocessor machine. If
535 you say Y here, the kernel will run on many, but not all,
536 singleprocessor machines. On a singleprocessor machine, the kernel
537 will run faster if you say N here.
539 People using multiprocessor machines who say Y here should also say
540 Y to "Enhanced Real Time Clock Support", below.
542 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
543 available at <http://www.tldp.org/docs.html#howto>.
545 If you don't know what to do here, say N.
548 int "Maximum number of CPUs (2-32)"
551 default "4" if CPU_SHX3
554 This allows you to specify the maximum number of CPUs which this
555 kernel will support. The maximum supported value is 32 and the
556 minimum value which makes sense is 2.
558 This is purely to save memory - each supported CPU adds
559 approximately eight kilobytes to the kernel image.
561 source "kernel/Kconfig.preempt"
565 depends on !SMP && SUPERH32
567 This enables support for gUSA (general UserSpace Atomicity).
568 This is the default implementation for both UP and non-ll/sc
569 CPUs, and is used by the libc, amongst others.
571 For additional information, design information can be found
572 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
574 This should only be disabled for special cases where alternate
575 atomicity implementations exist.
578 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
579 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
581 Enabling this option will allow the kernel to implement some
582 atomic operations using a software implemention of load-locked/
583 store-conditional (LLSC). On machines which do not have hardware
584 LLSC, this should be more efficient than the other alternative of
585 disabling insterrupts around the atomic sequence.
591 config ZERO_PAGE_OFFSET
592 hex "Zero page offset"
593 default "0x00004000" if SH_SH03
594 default "0x00010000" if PAGE_SIZE_64KB
595 default "0x00002000" if PAGE_SIZE_8KB
598 This sets the default offset of zero page.
600 config BOOT_LINK_OFFSET
601 hex "Link address offset for booting"
604 This option allows you to set the link address offset of the zImage.
605 This can be useful if you are on a board which has a small amount of
609 bool "Wakeup UBC on startup"
610 depends on CPU_SH4 && !CPU_SH4A
612 Selecting this option will wakeup the User Break Controller (UBC) on
613 startup. Although the UBC is left in an awake state when the processor
614 comes up, some boot loaders misbehave by putting the UBC to sleep in a
615 power saving state, which causes issues with things like ptrace().
620 bool "Default bootloader kernel arguments"
623 string "Initial kernel command string"
624 depends on CMDLINE_BOOL
625 default "console=ttySC1,115200"
631 # Even on SuperH devices which don't have an ISA bus,
632 # this variable helps the PCMCIA modules handle
633 # IRQ requesting properly -- Greg Banks.
635 # Though we're generally not interested in it when
636 # we're not using PCMCIA, so we make it dependent on
637 # PCMCIA outright. -- PFM.
640 depends on PCMCIA && HD6446X_SERIES
642 Find out whether you have ISA slots on your motherboard. ISA is the
643 name of a bus system, i.e. the way the CPU talks to the other stuff
644 inside your box. Other bus systems are PCI, EISA, MicroChannel
645 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
646 newer boards don't support it. If you have ISA, say Y, otherwise N.
651 The Extended Industry Standard Architecture (EISA) bus was
652 developed as an open alternative to the IBM MicroChannel bus.
654 The EISA bus provided some of the features of the IBM MicroChannel
655 bus while maintaining backward compatibility with cards made for
656 the older ISA bus. The EISA bus saw limited use between 1988 and
657 1995 when it was made obsolete by the PCI bus.
659 Say Y here if you are building a kernel for an EISA-based machine.
666 MicroChannel Architecture is found in some IBM PS/2 machines and
667 laptops. It is a bus system similar to PCI or ISA. See
668 <file:Documentation/mca.txt> (and especially the web page given
669 there) before attempting to build an MCA bus kernel.
675 tristate "SuperHyway Bus support"
676 depends on CPU_SUBTYPE_SH4_202
679 bool "Maple Bus support"
680 depends on SH_DREAMCAST
682 The Maple Bus is SEGA's serial communication bus for peripherals
683 on the Dreamcast. Without this bus support you won't be able to
684 get your Dreamcast keyboard etc to work, so most users
685 probably want to say 'Y' here, unless you are only using the
686 Dreamcast with a serial line terminal or a remote network
690 bool "Compact Flash Enabler support"
691 depends on SOLUTION_ENGINE || SH_SH03
693 Compact Flash is a small, removable mass storage device introduced
694 in 1994 originally as a PCMCIA device. If you say `Y' here, you
695 compile in support for Compact Flash devices directly connected to
696 a SuperH processor. A Compact Flash FAQ is available at
697 <http://www.compactflash.org/faqs/faq.htm>.
699 If your board has "Directly Connected" CompactFlash at area 5 or 6,
700 you may want to enable this option. Then, you can use CF as
701 primary IDE drive (only tested for SanDisk).
703 If in doubt, select 'N'.
706 prompt "Compact Flash Connection Area"
707 depends on CF_ENABLER
713 If your board has "Directly Connected" CompactFlash, You should
714 select the area where your CF is connected to.
716 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
717 - "Area6" if it is connected to Area 6 (0x18000000)
719 "Area6" will work for most boards.
728 depends on CF_ENABLER
729 default "0xb8000000" if CF_AREA6
730 default "0xb4000000" if CF_AREA5
732 source "arch/sh/drivers/pci/Kconfig"
734 source "drivers/pci/Kconfig"
736 source "drivers/pcmcia/Kconfig"
738 source "drivers/pci/hotplug/Kconfig"
742 menu "Executable file formats"
744 source "fs/Kconfig.binfmt"
748 menu "Power management options (EXPERIMENTAL)"
749 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
751 config ARCH_SUSPEND_POSSIBLE
755 source kernel/power/Kconfig
761 source "drivers/Kconfig"
765 source "arch/sh/Kconfig.debug"
767 source "security/Kconfig"
769 source "crypto/Kconfig"