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_LOCKBREAK
71 depends on SMP && PREEMPT
73 config SYS_SUPPORTS_PM
76 config SYS_SUPPORTS_APM_EMULATION
78 select SYS_SUPPORTS_PM
80 config SYS_SUPPORTS_SMP
83 config SYS_SUPPORTS_NUMA
86 config SYS_SUPPORTS_PCI
89 config STACKTRACE_SUPPORT
92 config LOCKDEP_SUPPORT
95 config ARCH_HAS_ILOG2_U32
98 config ARCH_HAS_ILOG2_U64
101 config ARCH_NO_VIRT_TO_BUS
104 config ARCH_SUPPORTS_AOUT
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
330 # SH4AL-DSP Processor Support
332 config CPU_SUBTYPE_SH7343
333 bool "Support SH7343 processor"
336 config CPU_SUBTYPE_SH7722
337 bool "Support SH7722 processor"
340 select ARCH_SPARSEMEM_ENABLE
341 select SYS_SUPPORTS_NUMA
343 config CPU_SUBTYPE_SH7366
344 bool "Support SH7366 processor"
347 select ARCH_SPARSEMEM_ENABLE
348 select SYS_SUPPORTS_NUMA
350 # SH-5 Processor Support
352 config CPU_SUBTYPE_SH5_101
353 bool "Support SH5-101 processor"
356 config CPU_SUBTYPE_SH5_103
357 bool "Support SH5-103 processor"
362 source "arch/sh/mm/Kconfig"
364 source "arch/sh/Kconfig.cpu"
366 source "arch/sh/boards/Kconfig"
368 menu "Timer and clock configuration"
372 prompt "TMU timer support"
373 depends on CPU_SH3 || CPU_SH4
375 select GENERIC_CLOCKEVENTS
377 This enables the use of the TMU as the system timer.
381 prompt "CMT timer support"
382 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
384 This enables the use of the CMT as the system timer.
388 prompt "MTU2 timer support"
391 This enables the use of the MTU2 as the system timer.
395 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
397 default "86" if CPU_SUBTYPE_SH7619
398 default "140" if CPU_SUBTYPE_SH7206
399 default "142" if CPU_SUBTYPE_SH7203
400 default "238" if CPU_SUBTYPE_MXG
404 int "Peripheral clock frequency (in Hz)"
405 default "27000000" if CPU_SUBTYPE_SH7343
406 default "31250000" if CPU_SUBTYPE_SH7619
407 default "32000000" if CPU_SUBTYPE_SH7722
408 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
409 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
410 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
411 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
412 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
413 default "66000000" if CPU_SUBTYPE_SH4_202
416 This option is used to specify the peripheral clock frequency.
417 This is necessary for determining the reference clock value on
418 platforms lacking an RTC.
421 int "CPU Mode Pin Setting"
423 default 6 if CPU_SUBTYPE_SH7206
424 default 5 if CPU_SUBTYPE_SH7619
427 MD2 - MD0 pin setting.
429 source "kernel/time/Kconfig"
433 menu "CPU Frequency scaling"
435 source "drivers/cpufreq/Kconfig"
438 tristate "SuperH CPU Frequency driver"
440 select CPU_FREQ_TABLE
442 This adds the cpufreq driver for SuperH. At present, only
443 the SH-4 is supported.
445 For details, take a look at <file:Documentation/cpu-freq>.
451 source "arch/sh/drivers/Kconfig"
458 menu "Kernel features"
460 source kernel/Kconfig.hz
463 bool "kexec system call (EXPERIMENTAL)"
464 depends on SUPERH32 && EXPERIMENTAL
466 kexec is a system call that implements the ability to shutdown your
467 current kernel, and to start another kernel. It is like a reboot
468 but it is independent of the system firmware. And like a reboot
469 you can start any kernel with it, not just Linux.
471 The name comes from the similarity to the exec system call.
473 It is an ongoing process to be certain the hardware in a machine
474 is properly shutdown, so do not be surprised if this code does not
475 initially work for you. It may help to enable device hotplugging
476 support. As of this writing the exact hardware interface is
477 strongly in flux, so no good recommendation can be made.
480 bool "kernel crash dumps (EXPERIMENTAL)"
481 depends on SUPERH32 && EXPERIMENTAL
483 Generate crash dump after being started by kexec.
484 This should be normally only set in special crash dump kernels
485 which are loaded in the main kernel with kexec-tools into
486 a specially reserved region and then later executed after
487 a crash by kdump/kexec. The crash dump kernel must be compiled
488 to a memory address not used by the main kernel using
491 For more details see Documentation/kdump/kdump.txt
494 bool "Enable seccomp to safely compute untrusted bytecode"
498 This kernel feature is useful for number crunching applications
499 that may need to compute untrusted bytecode during their
500 execution. By using pipes or other transports made available to
501 the process as file descriptors supporting the read/write
502 syscalls, it's possible to isolate those applications in
503 their own address space using seccomp. Once seccomp is
504 enabled via prctl, it cannot be disabled and the task is only
505 allowed to execute a few safe syscalls defined by each seccomp
511 bool "Symmetric multi-processing support"
512 depends on SYS_SUPPORTS_SMP
513 select USE_GENERIC_SMP_HELPERS
515 This enables support for systems with more than one CPU. If you have
516 a system with only one CPU, like most personal computers, say N. If
517 you have a system with more than one CPU, say Y.
519 If you say N here, the kernel will run on single and multiprocessor
520 machines, but will use only one CPU of a multiprocessor machine. If
521 you say Y here, the kernel will run on many, but not all,
522 singleprocessor machines. On a singleprocessor machine, the kernel
523 will run faster if you say N here.
525 People using multiprocessor machines who say Y here should also say
526 Y to "Enhanced Real Time Clock Support", below.
528 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
529 available at <http://www.tldp.org/docs.html#howto>.
531 If you don't know what to do here, say N.
534 int "Maximum number of CPUs (2-32)"
537 default "4" if CPU_SHX3
540 This allows you to specify the maximum number of CPUs which this
541 kernel will support. The maximum supported value is 32 and the
542 minimum value which makes sense is 2.
544 This is purely to save memory - each supported CPU adds
545 approximately eight kilobytes to the kernel image.
547 source "kernel/Kconfig.preempt"
551 depends on !SMP && SUPERH32
553 This enables support for gUSA (general UserSpace Atomicity).
554 This is the default implementation for both UP and non-ll/sc
555 CPUs, and is used by the libc, amongst others.
557 For additional information, design information can be found
558 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
560 This should only be disabled for special cases where alternate
561 atomicity implementations exist.
564 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
565 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
567 Enabling this option will allow the kernel to implement some
568 atomic operations using a software implemention of load-locked/
569 store-conditional (LLSC). On machines which do not have hardware
570 LLSC, this should be more efficient than the other alternative of
571 disabling insterrupts around the atomic sequence.
577 config ZERO_PAGE_OFFSET
578 hex "Zero page offset"
579 default "0x00004000" if SH_SH03
580 default "0x00010000" if PAGE_SIZE_64KB
581 default "0x00002000" if PAGE_SIZE_8KB
584 This sets the default offset of zero page.
586 config BOOT_LINK_OFFSET
587 hex "Link address offset for booting"
590 This option allows you to set the link address offset of the zImage.
591 This can be useful if you are on a board which has a small amount of
595 bool "Wakeup UBC on startup"
596 depends on CPU_SH4 && !CPU_SH4A
598 Selecting this option will wakeup the User Break Controller (UBC) on
599 startup. Although the UBC is left in an awake state when the processor
600 comes up, some boot loaders misbehave by putting the UBC to sleep in a
601 power saving state, which causes issues with things like ptrace().
606 bool "Default bootloader kernel arguments"
609 string "Initial kernel command string"
610 depends on CMDLINE_BOOL
611 default "console=ttySC1,115200"
617 # Even on SuperH devices which don't have an ISA bus,
618 # this variable helps the PCMCIA modules handle
619 # IRQ requesting properly -- Greg Banks.
621 # Though we're generally not interested in it when
622 # we're not using PCMCIA, so we make it dependent on
623 # PCMCIA outright. -- PFM.
626 depends on PCMCIA && HD6446X_SERIES
628 Find out whether you have ISA slots on your motherboard. ISA is the
629 name of a bus system, i.e. the way the CPU talks to the other stuff
630 inside your box. Other bus systems are PCI, EISA, MicroChannel
631 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
632 newer boards don't support it. If you have ISA, say Y, otherwise N.
637 The Extended Industry Standard Architecture (EISA) bus was
638 developed as an open alternative to the IBM MicroChannel bus.
640 The EISA bus provided some of the features of the IBM MicroChannel
641 bus while maintaining backward compatibility with cards made for
642 the older ISA bus. The EISA bus saw limited use between 1988 and
643 1995 when it was made obsolete by the PCI bus.
645 Say Y here if you are building a kernel for an EISA-based machine.
652 MicroChannel Architecture is found in some IBM PS/2 machines and
653 laptops. It is a bus system similar to PCI or ISA. See
654 <file:Documentation/mca.txt> (and especially the web page given
655 there) before attempting to build an MCA bus kernel.
661 tristate "SuperHyway Bus support"
662 depends on CPU_SUBTYPE_SH4_202
665 bool "Maple Bus support"
666 depends on SH_DREAMCAST
668 The Maple Bus is SEGA's serial communication bus for peripherals
669 on the Dreamcast. Without this bus support you won't be able to
670 get your Dreamcast keyboard etc to work, so most users
671 probably want to say 'Y' here, unless you are only using the
672 Dreamcast with a serial line terminal or a remote network
676 bool "Compact Flash Enabler support"
677 depends on SOLUTION_ENGINE || SH_SH03
679 Compact Flash is a small, removable mass storage device introduced
680 in 1994 originally as a PCMCIA device. If you say `Y' here, you
681 compile in support for Compact Flash devices directly connected to
682 a SuperH processor. A Compact Flash FAQ is available at
683 <http://www.compactflash.org/faqs/faq.htm>.
685 If your board has "Directly Connected" CompactFlash at area 5 or 6,
686 you may want to enable this option. Then, you can use CF as
687 primary IDE drive (only tested for SanDisk).
689 If in doubt, select 'N'.
692 prompt "Compact Flash Connection Area"
693 depends on CF_ENABLER
699 If your board has "Directly Connected" CompactFlash, You should
700 select the area where your CF is connected to.
702 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
703 - "Area6" if it is connected to Area 6 (0x18000000)
705 "Area6" will work for most boards.
714 depends on CF_ENABLER
715 default "0xb8000000" if CF_AREA6
716 default "0xb4000000" if CF_AREA5
718 source "arch/sh/drivers/pci/Kconfig"
720 source "drivers/pci/Kconfig"
722 source "drivers/pcmcia/Kconfig"
724 source "drivers/pci/hotplug/Kconfig"
728 menu "Executable file formats"
730 source "fs/Kconfig.binfmt"
734 menu "Power management options (EXPERIMENTAL)"
735 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
737 config ARCH_SUSPEND_POSSIBLE
741 source kernel/power/Kconfig
747 source "drivers/Kconfig"
751 source "arch/sh/Kconfig.debug"
753 source "security/Kconfig"
755 source "crypto/Kconfig"