2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux/SuperH Kernel Configuration"
13 The SuperH is a RISC processor targeted for use in embedded systems
14 and consumer electronics; it was also used in the Sega Dreamcast
15 gaming console. The SuperH port has a home page at
16 <http://www.linux-sh.org/>.
18 config RWSEM_GENERIC_SPINLOCK
22 config RWSEM_XCHGADD_ALGORITHM
29 config GENERIC_FIND_NEXT_BIT
33 config GENERIC_HWEIGHT
37 config GENERIC_HARDIRQS
41 config GENERIC_IRQ_PROBE
45 config GENERIC_CALIBRATE_DELAY
55 config GENERIC_CLOCKEVENTS
58 config SYS_SUPPORTS_PM
61 config SYS_SUPPORTS_APM_EMULATION
63 select SYS_SUPPORTS_PM
65 config SYS_SUPPORTS_SMP
68 config SYS_SUPPORTS_NUMA
71 config SYS_SUPPORTS_PCI
74 config ARCH_MAY_HAVE_PC_FDC
77 config STACKTRACE_SUPPORT
81 config LOCKDEP_SUPPORT
85 config ARCH_HAS_ILOG2_U32
89 config ARCH_HAS_ILOG2_U64
93 config ARCH_NO_VIRT_TO_BUS
100 source "arch/sh/mm/Kconfig"
102 menu "Processor features"
105 prompt "Endianess selection"
106 default CPU_LITTLE_ENDIAN
108 Some SuperH machines can be configured for either little or big
109 endian byte order. These modes require different kernels.
111 config CPU_LITTLE_ENDIAN
114 config CPU_BIG_ENDIAN
124 Selecting this option will enable support for SH processors that
125 have FPU units (ie, SH77xx).
127 This option must be set in order to enable the FPU.
130 bool "FPU emulation support"
131 depends on !SH_FPU && EXPERIMENTAL
134 Selecting this option will enable support for software FPU emulation.
135 Most SH-3 users will want to say Y here, whereas most SH-4 users will
140 depends on CPU_HAS_DSP
143 Selecting this option will enable support for SH processors that
144 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
146 This option must be set in order to enable the DSP.
153 Selecting this option will allow the Linux kernel to use SH3 on-chip
158 config SH_STORE_QUEUES
159 bool "Support for Store Queues"
162 Selecting this option will enable an in-kernel API for manipulating
163 the store queues integrated in the SH-4 processors.
165 config SPECULATIVE_EXECUTION
166 bool "Speculative subroutine return"
167 depends on CPU_SUBTYPE_SH7780 && EXPERIMENTAL
169 This enables support for a speculative instruction fetch for
170 subroutine return. There are various pitfalls associated with
171 this, as outlined in the SH7780 hardware manual.
175 config CPU_HAS_INTEVT
178 config CPU_HAS_MASKREG_IRQ
181 config CPU_HAS_INTC_IRQ
184 config CPU_HAS_INTC2_IRQ
187 config CPU_HAS_IPR_IRQ
192 depends on CPU_SH3 || CPU_SH4
195 This will enable the use of SR.RB register bank usage. Processors
196 that are lacking this bit must have another method in place for
197 accomplishing what is taken care of by the banked registers.
199 See <file:Documentation/sh/register-banks.txt> for further
200 information on SR.RB and register banking in the kernel in general.
212 config SOLUTION_ENGINE
215 config SH_SOLUTION_ENGINE
216 bool "SolutionEngine"
217 select SOLUTION_ENGINE
218 select CPU_HAS_IPR_IRQ
219 depends on CPU_SUBTYPE_SH7709 || CPU_SUBTYPE_SH7750
221 Select SolutionEngine if configuring for a Hitachi SH7709
222 or SH7750 evaluation board.
224 config SH_7206_SOLUTION_ENGINE
225 bool "SolutionEngine7206"
226 select SOLUTION_ENGINE
227 depends on CPU_SUBTYPE_SH7206
229 Select 7206 SolutionEngine if configuring for a Hitachi SH7206
232 config SH_7619_SOLUTION_ENGINE
233 bool "SolutionEngine7619"
234 select SOLUTION_ENGINE
235 depends on CPU_SUBTYPE_SH7619
237 Select 7619 SolutionEngine if configuring for a Hitachi SH7619
240 config SH_7722_SOLUTION_ENGINE
241 bool "SolutionEngine7722"
242 select SOLUTION_ENGINE
243 depends on CPU_SUBTYPE_SH7722
245 Select 7722 SolutionEngine if configuring for a Hitachi SH772
248 config SH_7751_SOLUTION_ENGINE
249 bool "SolutionEngine7751"
250 select SOLUTION_ENGINE
251 select CPU_HAS_IPR_IRQ
252 depends on CPU_SUBTYPE_SH7751
254 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
257 config SH_7780_SOLUTION_ENGINE
258 bool "SolutionEngine7780"
259 select SOLUTION_ENGINE
260 select SYS_SUPPORTS_PCI
261 depends on CPU_SUBTYPE_SH7780
263 Select 7780 SolutionEngine if configuring for a Renesas SH7780
266 config SH_7343_SOLUTION_ENGINE
267 bool "SolutionEngine7343"
268 select SOLUTION_ENGINE
269 depends on CPU_SUBTYPE_SH7343
271 Select 7343 SolutionEngine if configuring for a Hitachi
272 SH7343 (SH-Mobile 3AS) evaluation board.
274 config SH_7751_SYSTEMH
276 depends on CPU_SUBTYPE_SH7751R
278 Select SystemH if you are configuring for a Renesas SystemH
279 7751R evaluation board.
283 select SYS_SUPPORTS_APM_EMULATION
284 select HD6446X_SERIES
285 depends on CPU_SUBTYPE_SH7709
287 Select HP6XX if configuring for a HP jornada HP6xx.
288 More information (hardware only) at
289 <http://www.hp.com/jornada/>.
293 select SYS_SUPPORTS_PCI
294 depends on CPU_SUBTYPE_SH7091
296 Select Dreamcast if configuring for a SEGA Dreamcast.
298 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
299 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
302 bool "Interface MPC1211"
303 depends on CPU_SUBTYPE_SH7751 && BROKEN
305 CTP/PCI-SH02 is a CPU module computer that is produced
306 by Interface Corporation.
307 More information at <http://www.interface.co.jp>
310 bool "Interface CTP/PCI-SH03"
311 depends on CPU_SUBTYPE_SH7751
312 select CPU_HAS_IPR_IRQ
313 select SYS_SUPPORTS_PCI
315 CTP/PCI-SH03 is a CPU module computer that is produced
316 by Interface Corporation.
317 More information at <http://www.interface.co.jp>
319 config SH_SECUREEDGE5410
320 bool "SecureEdge5410"
321 depends on CPU_SUBTYPE_SH7751R
322 select CPU_HAS_IPR_IRQ
323 select SYS_SUPPORTS_PCI
325 Select SecureEdge5410 if configuring for a SnapGear SH board.
326 This includes both the OEM SecureEdge products as well as the
329 config SH_HS7751RVOIP
331 depends on CPU_SUBTYPE_SH7751R
333 Select HS7751RVOIP if configuring for a Renesas Technology
337 bool "SH7710-VOIP-GW"
338 depends on CPU_SUBTYPE_SH7710
340 Select this option to build a kernel for the SH7710 based
345 depends on CPU_SUBTYPE_SH7751R
346 select SYS_SUPPORTS_PCI
348 Select RTS7751R2D if configuring for a Renesas Technology
349 Sales SH-Graphics board.
353 depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
354 select SYS_SUPPORTS_PCI
358 depends on CPU_SUBTYPE_SH7705
360 config SH_SH4202_MICRODEV
361 bool "SH4-202 MicroDev"
362 depends on CPU_SUBTYPE_SH4_202
364 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
369 depends on CPU_SUBTYPE_SH7751R
370 select SYS_SUPPORTS_PCI
372 I-O DATA DEVICE, INC. "LANDISK Series" support.
376 depends on CPU_SUBTYPE_SH7751R
377 select CPU_HAS_IPR_IRQ
378 select SYS_SUPPORTS_PCI
380 Select Titan if you are configuring for a Nimble Microsystems
385 depends on CPU_SUBTYPE_SH7706
386 select CPU_HAS_IPR_IRQ
388 Select SHMIN if configuring for the SHMIN board.
392 depends on CPU_SUBTYPE_SH7751R
393 select SYS_SUPPORTS_PCI
395 Select L-BOX RE2 if configuring for the NTT COMWARE L-BOX RE2.
399 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
400 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
401 source "arch/sh/boards/renesas/r7780rp/Kconfig"
403 menu "Timer and clock configuration"
406 bool "TMU timer support"
407 depends on CPU_SH3 || CPU_SH4
409 select GENERIC_CLOCKEVENTS
412 This enables the use of the TMU as the system timer.
415 bool "CMT timer support"
419 This enables the use of the CMT as the system timer.
422 bool "MTU2 timer support"
426 This enables the use of the MTU2 as the system timer.
430 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
431 default "86" if CPU_SUBTYPE_SH7619
432 default "140" if CPU_SUBTYPE_SH7206
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 || \
441 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
443 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
444 default "66000000" if CPU_SUBTYPE_SH4_202
447 This option is used to specify the peripheral clock frequency.
448 This is necessary for determining the reference clock value on
449 platforms lacking an RTC.
452 int "CPU Mode Pin Setting"
453 depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
454 default 6 if CPU_SUBTYPE_SH7206
455 default 5 if CPU_SUBTYPE_SH7619
458 MD2 - MD0 pin setting.
460 source "kernel/time/Kconfig"
464 menu "CPU Frequency scaling"
466 source "drivers/cpufreq/Kconfig"
469 tristate "SuperH CPU Frequency driver"
471 select CPU_FREQ_TABLE
473 This adds the cpufreq driver for SuperH. At present, only
474 the SH-4 is supported.
476 For details, take a look at <file:Documentation/cpu-freq>.
482 source "arch/sh/drivers/Kconfig"
488 depends on SH_MPC1211
491 menu "Kernel features"
493 source kernel/Kconfig.hz
496 bool "kexec system call (EXPERIMENTAL)"
497 depends on EXPERIMENTAL
499 kexec is a system call that implements the ability to shutdown your
500 current kernel, and to start another kernel. It is like a reboot
501 but it is independent of the system firmware. And like a reboot
502 you can start any kernel with it, not just Linux.
504 The name comes from the similarity to the exec system call.
506 It is an ongoing process to be certain the hardware in a machine
507 is properly shutdown, so do not be surprised if this code does not
508 initially work for you. It may help to enable device hotplugging
509 support. As of this writing the exact hardware interface is
510 strongly in flux, so no good recommendation can be made.
513 bool "kernel crash dumps (EXPERIMENTAL)"
514 depends on EXPERIMENTAL
516 Generate crash dump after being started by kexec.
517 This should be normally only set in special crash dump kernels
518 which are loaded in the main kernel with kexec-tools into
519 a specially reserved region and then later executed after
520 a crash by kdump/kexec. The crash dump kernel must be compiled
521 to a memory address not used by the main kernel using
524 For more details see Documentation/kdump/kdump.txt
527 bool "Symmetric multi-processing support"
528 depends on SYS_SUPPORTS_SMP
530 This enables support for systems with more than one CPU. If you have
531 a system with only one CPU, like most personal computers, say N. If
532 you have a system with more than one CPU, say Y.
534 If you say N here, the kernel will run on single and multiprocessor
535 machines, but will use only one CPU of a multiprocessor machine. If
536 you say Y here, the kernel will run on many, but not all,
537 singleprocessor machines. On a singleprocessor machine, the kernel
538 will run faster if you say N here.
540 People using multiprocessor machines who say Y here should also say
541 Y to "Enhanced Real Time Clock Support", below.
543 See also the <file:Documentation/smp.txt>,
544 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
545 at <http://www.tldp.org/docs.html#howto>.
547 If you don't know what to do here, say N.
550 int "Maximum number of CPUs (2-32)"
553 default "4" if CPU_SHX3
556 This allows you to specify the maximum number of CPUs which this
557 kernel will support. The maximum supported value is 32 and the
558 minimum value which makes sense is 2.
560 This is purely to save memory - each supported CPU adds
561 approximately eight kilobytes to the kernel image.
563 source "kernel/Kconfig.preempt"
568 depends on NEED_MULTIPLE_NODES
574 config ZERO_PAGE_OFFSET
575 hex "Zero page offset"
576 default "0x00004000" if SH_MPC1211 || SH_SH03
577 default "0x00010000" if PAGE_SIZE_64KB
578 default "0x00002000" if PAGE_SIZE_8KB
581 This sets the default offset of zero page.
583 config BOOT_LINK_OFFSET
584 hex "Link address offset for booting"
587 This option allows you to set the link address offset of the zImage.
588 This can be useful if you are on a board which has a small amount of
592 bool "Wakeup UBC on startup"
595 Selecting this option will wakeup the User Break Controller (UBC) on
596 startup. Although the UBC is left in an awake state when the processor
597 comes up, some boot loaders misbehave by putting the UBC to sleep in a
598 power saving state, which causes issues with things like ptrace().
603 bool "Default bootloader kernel arguments"
606 string "Initial kernel command string"
607 depends on CMDLINE_BOOL
608 default "console=ttySC1,115200"
614 # Even on SuperH devices which don't have an ISA bus,
615 # this variable helps the PCMCIA modules handle
616 # IRQ requesting properly -- Greg Banks.
618 # Though we're generally not interested in it when
619 # we're not using PCMCIA, so we make it dependent on
620 # PCMCIA outright. -- PFM.
623 depends on PCMCIA && HD6446X_SERIES
625 Find out whether you have ISA slots on your motherboard. ISA is the
626 name of a bus system, i.e. the way the CPU talks to the other stuff
627 inside your box. Other bus systems are PCI, EISA, MicroChannel
628 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
629 newer boards don't support it. If you have ISA, say Y, otherwise N.
634 The Extended Industry Standard Architecture (EISA) bus was
635 developed as an open alternative to the IBM MicroChannel bus.
637 The EISA bus provided some of the features of the IBM MicroChannel
638 bus while maintaining backward compatibility with cards made for
639 the older ISA bus. The EISA bus saw limited use between 1988 and
640 1995 when it was made obsolete by the PCI bus.
642 Say Y here if you are building a kernel for an EISA-based machine.
649 MicroChannel Architecture is found in some IBM PS/2 machines and
650 laptops. It is a bus system similar to PCI or ISA. See
651 <file:Documentation/mca.txt> (and especially the web page given
652 there) before attempting to build an MCA bus kernel.
658 tristate "SuperHyway Bus support"
659 depends on CPU_SUBTYPE_SH4_202
662 bool "Compact Flash Enabler support"
663 depends on SOLUTION_ENGINE || SH_SH03
665 Compact Flash is a small, removable mass storage device introduced
666 in 1994 originally as a PCMCIA device. If you say `Y' here, you
667 compile in support for Compact Flash devices directly connected to
668 a SuperH processor. A Compact Flash FAQ is available at
669 <http://www.compactflash.org/faqs/faq.htm>.
671 If your board has "Directly Connected" CompactFlash at area 5 or 6,
672 you may want to enable this option. Then, you can use CF as
673 primary IDE drive (only tested for SanDisk).
675 If in doubt, select 'N'.
678 prompt "Compact Flash Connection Area"
679 depends on CF_ENABLER
685 If your board has "Directly Connected" CompactFlash, You should
686 select the area where your CF is connected to.
688 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
689 - "Area6" if it is connected to Area 6 (0x18000000)
691 "Area6" will work for most boards.
700 depends on CF_ENABLER
701 default "0xb8000000" if CF_AREA6
702 default "0xb4000000" if CF_AREA5
704 source "arch/sh/drivers/pci/Kconfig"
706 source "drivers/pci/Kconfig"
708 source "drivers/pcmcia/Kconfig"
710 source "drivers/pci/hotplug/Kconfig"
714 menu "Executable file formats"
716 source "fs/Kconfig.binfmt"
720 menu "Power management options (EXPERIMENTAL)"
721 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
723 source kernel/power/Kconfig
729 source "drivers/Kconfig"
733 source "arch/sh/oprofile/Kconfig"
735 source "arch/sh/Kconfig.debug"
737 source "security/Kconfig"
739 source "crypto/Kconfig"