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
16 The SuperH is a RISC processor targeted for use in embedded systems
17 and consumer electronics; it was also used in the Sega Dreamcast
18 gaming console. The SuperH port has a home page at
19 <http://www.linux-sh.org/>.
29 default "arch/sh/configs/shx3_defconfig" if SUPERH32
30 default "arch/sh/configs/cayman_defconfig" if SUPERH64
32 config RWSEM_GENERIC_SPINLOCK
35 config RWSEM_XCHGADD_ALGORITHM
40 depends on BUG && SUPERH32
42 config GENERIC_FIND_NEXT_BIT
45 config GENERIC_HWEIGHT
48 config GENERIC_HARDIRQS
51 config GENERIC_HARDIRQS_NO__DO_IRQ
54 config GENERIC_IRQ_PROBE
57 config GENERIC_CALIBRATE_DELAY
66 config GENERIC_CLOCKEVENTS
69 config GENERIC_CLOCKEVENTS_BROADCAST
72 config GENERIC_LOCKBREAK
74 depends on SMP && PREEMPT
76 config SYS_SUPPORTS_PM
79 config SYS_SUPPORTS_APM_EMULATION
81 select SYS_SUPPORTS_PM
83 config SYS_SUPPORTS_SMP
86 config SYS_SUPPORTS_NUMA
89 config SYS_SUPPORTS_PCI
92 config STACKTRACE_SUPPORT
95 config LOCKDEP_SUPPORT
98 config ARCH_HAS_ILOG2_U32
101 config ARCH_HAS_ILOG2_U64
104 config ARCH_NO_VIRT_TO_BUS
110 source "init/Kconfig"
126 select CPU_HAS_INTEVT
131 select CPU_HAS_INTEVT
133 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
134 select CPU_HAS_FPU if !CPU_SH4AL_DSP
156 prompt "Processor sub-type selection"
162 # SH-2 Processor Support
164 config CPU_SUBTYPE_SH7619
165 bool "Support SH7619 processor"
168 # SH-2A Processor Support
170 config CPU_SUBTYPE_SH7203
171 bool "Support SH7203 processor"
175 config CPU_SUBTYPE_SH7206
176 bool "Support SH7206 processor"
179 config CPU_SUBTYPE_SH7263
180 bool "Support SH7263 processor"
184 config CPU_SUBTYPE_MXG
185 bool "Support MX-G processor"
188 Select MX-G if running on an R8A03022BG part.
190 # SH-3 Processor Support
192 config CPU_SUBTYPE_SH7705
193 bool "Support SH7705 processor"
196 config CPU_SUBTYPE_SH7706
197 bool "Support SH7706 processor"
200 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
202 config CPU_SUBTYPE_SH7707
203 bool "Support SH7707 processor"
206 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
208 config CPU_SUBTYPE_SH7708
209 bool "Support SH7708 processor"
212 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
213 if you have a 100 Mhz SH-3 HD6417708R CPU.
215 config CPU_SUBTYPE_SH7709
216 bool "Support SH7709 processor"
219 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
221 config CPU_SUBTYPE_SH7710
222 bool "Support SH7710 processor"
226 Select SH7710 if you have a SH3-DSP SH7710 CPU.
228 config CPU_SUBTYPE_SH7712
229 bool "Support SH7712 processor"
233 Select SH7712 if you have a SH3-DSP SH7712 CPU.
235 config CPU_SUBTYPE_SH7720
236 bool "Support SH7720 processor"
240 Select SH7720 if you have a SH3-DSP SH7720 CPU.
242 config CPU_SUBTYPE_SH7721
243 bool "Support SH7721 processor"
247 Select SH7721 if you have a SH3-DSP SH7721 CPU.
249 # SH-4 Processor Support
251 config CPU_SUBTYPE_SH7750
252 bool "Support SH7750 processor"
255 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
257 config CPU_SUBTYPE_SH7091
258 bool "Support SH7091 processor"
261 Select SH7091 if you have an SH-4 based Sega device (such as
262 the Dreamcast, Naomi, and Naomi 2).
264 config CPU_SUBTYPE_SH7750R
265 bool "Support SH7750R processor"
268 config CPU_SUBTYPE_SH7750S
269 bool "Support SH7750S processor"
272 config CPU_SUBTYPE_SH7751
273 bool "Support SH7751 processor"
276 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
277 or if you have a HD6417751R CPU.
279 config CPU_SUBTYPE_SH7751R
280 bool "Support SH7751R processor"
283 config CPU_SUBTYPE_SH7760
284 bool "Support SH7760 processor"
287 config CPU_SUBTYPE_SH4_202
288 bool "Support SH4-202 processor"
291 # SH-4A Processor Support
293 config CPU_SUBTYPE_SH7723
294 bool "Support SH7723 processor"
297 select ARCH_SPARSEMEM_ENABLE
299 Select SH7723 if you have an SH-MobileR2 CPU.
301 config CPU_SUBTYPE_SH7763
302 bool "Support SH7763 processor"
305 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
307 config CPU_SUBTYPE_SH7770
308 bool "Support SH7770 processor"
311 config CPU_SUBTYPE_SH7780
312 bool "Support SH7780 processor"
315 config CPU_SUBTYPE_SH7785
316 bool "Support SH7785 processor"
319 select ARCH_SPARSEMEM_ENABLE
320 select SYS_SUPPORTS_NUMA
322 config CPU_SUBTYPE_SHX3
323 bool "Support SH-X3 processor"
326 select ARCH_SPARSEMEM_ENABLE
327 select SYS_SUPPORTS_NUMA
328 select SYS_SUPPORTS_SMP
329 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
331 # SH4AL-DSP Processor Support
333 config CPU_SUBTYPE_SH7343
334 bool "Support SH7343 processor"
337 config CPU_SUBTYPE_SH7722
338 bool "Support SH7722 processor"
341 select ARCH_SPARSEMEM_ENABLE
342 select SYS_SUPPORTS_NUMA
344 config CPU_SUBTYPE_SH7366
345 bool "Support SH7366 processor"
348 select ARCH_SPARSEMEM_ENABLE
349 select SYS_SUPPORTS_NUMA
351 # SH-5 Processor Support
353 config CPU_SUBTYPE_SH5_101
354 bool "Support SH5-101 processor"
357 config CPU_SUBTYPE_SH5_103
358 bool "Support SH5-103 processor"
363 source "arch/sh/mm/Kconfig"
365 source "arch/sh/Kconfig.cpu"
367 source "arch/sh/boards/Kconfig"
369 menu "Timer and clock configuration"
373 prompt "TMU timer support"
374 depends on CPU_SH3 || CPU_SH4
376 select GENERIC_CLOCKEVENTS
378 This enables the use of the TMU as the system timer.
382 prompt "CMT timer support"
383 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
385 This enables the use of the CMT as the system timer.
389 prompt "MTU2 timer support"
392 This enables the use of the MTU2 as the system timer.
396 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
398 default "86" if CPU_SUBTYPE_SH7619
399 default "140" if CPU_SUBTYPE_SH7206
400 default "142" if CPU_SUBTYPE_SH7203
401 default "238" if CPU_SUBTYPE_MXG
405 int "Peripheral clock frequency (in Hz)"
406 default "27000000" if CPU_SUBTYPE_SH7343
407 default "31250000" if CPU_SUBTYPE_SH7619
408 default "32000000" if CPU_SUBTYPE_SH7722
409 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
410 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
411 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
412 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
413 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
414 default "66000000" if CPU_SUBTYPE_SH4_202
417 This option is used to specify the peripheral clock frequency.
418 This is necessary for determining the reference clock value on
419 platforms lacking an RTC.
422 int "CPU Mode Pin Setting"
424 default 6 if CPU_SUBTYPE_SH7206
425 default 5 if CPU_SUBTYPE_SH7619
428 MD2 - MD0 pin setting.
430 source "kernel/time/Kconfig"
434 menu "CPU Frequency scaling"
436 source "drivers/cpufreq/Kconfig"
439 tristate "SuperH CPU Frequency driver"
441 select CPU_FREQ_TABLE
443 This adds the cpufreq driver for SuperH. At present, only
444 the SH-4 is supported.
446 For details, take a look at <file:Documentation/cpu-freq>.
452 source "arch/sh/drivers/Kconfig"
459 menu "Kernel features"
461 source kernel/Kconfig.hz
464 bool "kexec system call (EXPERIMENTAL)"
465 depends on SUPERH32 && EXPERIMENTAL
467 kexec is a system call that implements the ability to shutdown your
468 current kernel, and to start another kernel. It is like a reboot
469 but it is independent of the system firmware. And like a reboot
470 you can start any kernel with it, not just Linux.
472 The name comes from the similarity to the exec system call.
474 It is an ongoing process to be certain the hardware in a machine
475 is properly shutdown, so do not be surprised if this code does not
476 initially work for you. It may help to enable device hotplugging
477 support. As of this writing the exact hardware interface is
478 strongly in flux, so no good recommendation can be made.
481 bool "kernel crash dumps (EXPERIMENTAL)"
482 depends on SUPERH32 && EXPERIMENTAL
484 Generate crash dump after being started by kexec.
485 This should be normally only set in special crash dump kernels
486 which are loaded in the main kernel with kexec-tools into
487 a specially reserved region and then later executed after
488 a crash by kdump/kexec. The crash dump kernel must be compiled
489 to a memory address not used by the main kernel using
492 For more details see Documentation/kdump/kdump.txt
495 bool "Enable seccomp to safely compute untrusted bytecode"
499 This kernel feature is useful for number crunching applications
500 that may need to compute untrusted bytecode during their
501 execution. By using pipes or other transports made available to
502 the process as file descriptors supporting the read/write
503 syscalls, it's possible to isolate those applications in
504 their own address space using seccomp. Once seccomp is
505 enabled via prctl, it cannot be disabled and the task is only
506 allowed to execute a few safe syscalls defined by each seccomp
512 bool "Symmetric multi-processing support"
513 depends on SYS_SUPPORTS_SMP
514 select USE_GENERIC_SMP_HELPERS
516 This enables support for systems with more than one CPU. If you have
517 a system with only one CPU, like most personal computers, say N. If
518 you have a system with more than one CPU, say Y.
520 If you say N here, the kernel will run on single and multiprocessor
521 machines, but will use only one CPU of a multiprocessor machine. If
522 you say Y here, the kernel will run on many, but not all,
523 singleprocessor machines. On a singleprocessor machine, the kernel
524 will run faster if you say N here.
526 People using multiprocessor machines who say Y here should also say
527 Y to "Enhanced Real Time Clock Support", below.
529 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
530 available at <http://www.tldp.org/docs.html#howto>.
532 If you don't know what to do here, say N.
535 int "Maximum number of CPUs (2-32)"
538 default "4" if CPU_SHX3
541 This allows you to specify the maximum number of CPUs which this
542 kernel will support. The maximum supported value is 32 and the
543 minimum value which makes sense is 2.
545 This is purely to save memory - each supported CPU adds
546 approximately eight kilobytes to the kernel image.
548 source "kernel/Kconfig.preempt"
552 depends on !SMP && SUPERH32
554 This enables support for gUSA (general UserSpace Atomicity).
555 This is the default implementation for both UP and non-ll/sc
556 CPUs, and is used by the libc, amongst others.
558 For additional information, design information can be found
559 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
561 This should only be disabled for special cases where alternate
562 atomicity implementations exist.
565 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
566 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
568 Enabling this option will allow the kernel to implement some
569 atomic operations using a software implemention of load-locked/
570 store-conditional (LLSC). On machines which do not have hardware
571 LLSC, this should be more efficient than the other alternative of
572 disabling insterrupts around the atomic sequence.
578 config ZERO_PAGE_OFFSET
579 hex "Zero page offset"
580 default "0x00004000" if SH_SH03
581 default "0x00010000" if PAGE_SIZE_64KB
582 default "0x00002000" if PAGE_SIZE_8KB
585 This sets the default offset of zero page.
587 config BOOT_LINK_OFFSET
588 hex "Link address offset for booting"
591 This option allows you to set the link address offset of the zImage.
592 This can be useful if you are on a board which has a small amount of
596 bool "Wakeup UBC on startup"
597 depends on CPU_SH4 && !CPU_SH4A
599 Selecting this option will wakeup the User Break Controller (UBC) on
600 startup. Although the UBC is left in an awake state when the processor
601 comes up, some boot loaders misbehave by putting the UBC to sleep in a
602 power saving state, which causes issues with things like ptrace().
607 bool "Default bootloader kernel arguments"
610 string "Initial kernel command string"
611 depends on CMDLINE_BOOL
612 default "console=ttySC1,115200"
618 # Even on SuperH devices which don't have an ISA bus,
619 # this variable helps the PCMCIA modules handle
620 # IRQ requesting properly -- Greg Banks.
622 # Though we're generally not interested in it when
623 # we're not using PCMCIA, so we make it dependent on
624 # PCMCIA outright. -- PFM.
627 depends on PCMCIA && HD6446X_SERIES
629 Find out whether you have ISA slots on your motherboard. ISA is the
630 name of a bus system, i.e. the way the CPU talks to the other stuff
631 inside your box. Other bus systems are PCI, EISA, MicroChannel
632 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
633 newer boards don't support it. If you have ISA, say Y, otherwise N.
638 The Extended Industry Standard Architecture (EISA) bus was
639 developed as an open alternative to the IBM MicroChannel bus.
641 The EISA bus provided some of the features of the IBM MicroChannel
642 bus while maintaining backward compatibility with cards made for
643 the older ISA bus. The EISA bus saw limited use between 1988 and
644 1995 when it was made obsolete by the PCI bus.
646 Say Y here if you are building a kernel for an EISA-based machine.
653 MicroChannel Architecture is found in some IBM PS/2 machines and
654 laptops. It is a bus system similar to PCI or ISA. See
655 <file:Documentation/mca.txt> (and especially the web page given
656 there) before attempting to build an MCA bus kernel.
662 tristate "SuperHyway Bus support"
663 depends on CPU_SUBTYPE_SH4_202
666 bool "Maple Bus support"
667 depends on SH_DREAMCAST
669 The Maple Bus is SEGA's serial communication bus for peripherals
670 on the Dreamcast. Without this bus support you won't be able to
671 get your Dreamcast keyboard etc to work, so most users
672 probably want to say 'Y' here, unless you are only using the
673 Dreamcast with a serial line terminal or a remote network
677 bool "Compact Flash Enabler support"
678 depends on SOLUTION_ENGINE || SH_SH03
680 Compact Flash is a small, removable mass storage device introduced
681 in 1994 originally as a PCMCIA device. If you say `Y' here, you
682 compile in support for Compact Flash devices directly connected to
683 a SuperH processor. A Compact Flash FAQ is available at
684 <http://www.compactflash.org/faqs/faq.htm>.
686 If your board has "Directly Connected" CompactFlash at area 5 or 6,
687 you may want to enable this option. Then, you can use CF as
688 primary IDE drive (only tested for SanDisk).
690 If in doubt, select 'N'.
693 prompt "Compact Flash Connection Area"
694 depends on CF_ENABLER
700 If your board has "Directly Connected" CompactFlash, You should
701 select the area where your CF is connected to.
703 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
704 - "Area6" if it is connected to Area 6 (0x18000000)
706 "Area6" will work for most boards.
715 depends on CF_ENABLER
716 default "0xb8000000" if CF_AREA6
717 default "0xb4000000" if CF_AREA5
719 source "arch/sh/drivers/pci/Kconfig"
721 source "drivers/pci/Kconfig"
723 source "drivers/pcmcia/Kconfig"
725 source "drivers/pci/hotplug/Kconfig"
729 menu "Executable file formats"
731 source "fs/Kconfig.binfmt"
735 menu "Power management options (EXPERIMENTAL)"
736 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
738 config ARCH_SUSPEND_POSSIBLE
742 source kernel/power/Kconfig
748 source "drivers/Kconfig"
752 source "arch/sh/Kconfig.debug"
754 source "security/Kconfig"
756 source "crypto/Kconfig"