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
97 source "arch/sh/mm/Kconfig"
99 menu "Processor features"
102 prompt "Endianess selection"
103 default CPU_LITTLE_ENDIAN
105 Some SuperH machines can be configured for either little or big
106 endian byte order. These modes require different kernels.
108 config CPU_LITTLE_ENDIAN
111 config CPU_BIG_ENDIAN
121 Selecting this option will enable support for SH processors that
122 have FPU units (ie, SH77xx).
124 This option must be set in order to enable the FPU.
127 bool "FPU emulation support"
128 depends on !SH_FPU && EXPERIMENTAL
131 Selecting this option will enable support for software FPU emulation.
132 Most SH-3 users will want to say Y here, whereas most SH-4 users will
137 default y if SH4AL_DSP || !CPU_SH4
140 Selecting this option will enable support for SH processors that
141 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
143 This option must be set in order to enable the DSP.
150 Selecting this option will allow the Linux kernel to use SH3 on-chip
155 config SH_STORE_QUEUES
156 bool "Support for Store Queues"
159 Selecting this option will enable an in-kernel API for manipulating
160 the store queues integrated in the SH-4 processors.
162 config SPECULATIVE_EXECUTION
163 bool "Speculative subroutine return"
164 depends on CPU_SUBTYPE_SH7780 && EXPERIMENTAL
166 This enables support for a speculative instruction fetch for
167 subroutine return. There are various pitfalls associated with
168 this, as outlined in the SH7780 hardware manual.
172 config CPU_HAS_INTEVT
175 config CPU_HAS_MASKREG_IRQ
178 config CPU_HAS_INTC_IRQ
181 config CPU_HAS_INTC2_IRQ
184 config CPU_HAS_IPR_IRQ
189 depends on CPU_SH3 || CPU_SH4
192 This will enable the use of SR.RB register bank usage. Processors
193 that are lacking this bit must have another method in place for
194 accomplishing what is taken care of by the banked registers.
196 See <file:Documentation/sh/register-banks.txt> for further
197 information on SR.RB and register banking in the kernel in general.
206 config SOLUTION_ENGINE
209 config SH_SOLUTION_ENGINE
210 bool "SolutionEngine"
211 select SOLUTION_ENGINE
212 select CPU_HAS_IPR_IRQ
213 depends on CPU_SUBTYPE_SH7709 || CPU_SUBTYPE_SH7750
215 Select SolutionEngine if configuring for a Hitachi SH7709
216 or SH7750 evaluation board.
218 config SH_7206_SOLUTION_ENGINE
219 bool "SolutionEngine7206"
220 select SOLUTION_ENGINE
221 depends on CPU_SUBTYPE_SH7206
223 Select 7206 SolutionEngine if configuring for a Hitachi SH7206
226 config SH_7619_SOLUTION_ENGINE
227 bool "SolutionEngine7619"
228 select SOLUTION_ENGINE
229 depends on CPU_SUBTYPE_SH7619
231 Select 7619 SolutionEngine if configuring for a Hitachi SH7619
234 config SH_7722_SOLUTION_ENGINE
235 bool "SolutionEngine7722"
236 select SOLUTION_ENGINE
237 depends on CPU_SUBTYPE_SH7722
239 Select 7722 SolutionEngine if configuring for a Hitachi SH772
242 config SH_7751_SOLUTION_ENGINE
243 bool "SolutionEngine7751"
244 select SOLUTION_ENGINE
245 select CPU_HAS_IPR_IRQ
246 depends on CPU_SUBTYPE_SH7751
248 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
251 config SH_7780_SOLUTION_ENGINE
252 bool "SolutionEngine7780"
253 select SOLUTION_ENGINE
254 select SYS_SUPPORTS_PCI
255 select CPU_HAS_INTC2_IRQ
256 depends on CPU_SUBTYPE_SH7780
258 Select 7780 SolutionEngine if configuring for a Renesas SH7780
261 config SH_7300_SOLUTION_ENGINE
262 bool "SolutionEngine7300"
263 select SOLUTION_ENGINE
264 depends on CPU_SUBTYPE_SH7300
266 Select 7300 SolutionEngine if configuring for a Hitachi
267 SH7300(SH-Mobile V) evaluation board.
269 config SH_7343_SOLUTION_ENGINE
270 bool "SolutionEngine7343"
271 select SOLUTION_ENGINE
272 depends on CPU_SUBTYPE_SH7343
274 Select 7343 SolutionEngine if configuring for a Hitachi
275 SH7343 (SH-Mobile 3AS) evaluation board.
277 config SH_7751_SYSTEMH
279 depends on CPU_SUBTYPE_SH7751R
281 Select SystemH if you are configuring for a Renesas SystemH
282 7751R evaluation board.
286 select SYS_SUPPORTS_APM_EMULATION
287 select HD6446X_SERIES
288 depends on CPU_SUBTYPE_SH7709
290 Select HP6XX if configuring for a HP jornada HP6xx.
291 More information (hardware only) at
292 <http://www.hp.com/jornada/>.
296 select SYS_SUPPORTS_PCI
297 depends on CPU_SUBTYPE_SH7091
299 Select Dreamcast if configuring for a SEGA Dreamcast.
301 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
302 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
305 bool "Interface MPC1211"
306 depends on CPU_SUBTYPE_SH7751 && BROKEN
308 CTP/PCI-SH02 is a CPU module computer that is produced
309 by Interface Corporation.
310 More information at <http://www.interface.co.jp>
313 bool "Interface CTP/PCI-SH03"
314 depends on CPU_SUBTYPE_SH7751 && BROKEN
315 select CPU_HAS_IPR_IRQ
316 select SYS_SUPPORTS_PCI
318 CTP/PCI-SH03 is a CPU module computer that is produced
319 by Interface Corporation.
320 More information at <http://www.interface.co.jp>
322 config SH_SECUREEDGE5410
323 bool "SecureEdge5410"
324 depends on CPU_SUBTYPE_SH7751R
325 select CPU_HAS_IPR_IRQ
326 select SYS_SUPPORTS_PCI
328 Select SecureEdge5410 if configuring for a SnapGear SH board.
329 This includes both the OEM SecureEdge products as well as the
332 config SH_HS7751RVOIP
334 depends on CPU_SUBTYPE_SH7751R
336 Select HS7751RVOIP if configuring for a Renesas Technology
340 bool "SH7710-VOIP-GW"
341 depends on CPU_SUBTYPE_SH7710
343 Select this option to build a kernel for the SH7710 based
348 depends on CPU_SUBTYPE_SH7751R
349 select SYS_SUPPORTS_PCI
351 Select RTS7751R2D if configuring for a Renesas Technology
352 Sales SH-Graphics board.
356 depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
357 select SYS_SUPPORTS_PCI
361 depends on CPU_SUBTYPE_SH7705
363 config SH_SH4202_MICRODEV
364 bool "SH4-202 MicroDev"
365 depends on CPU_SUBTYPE_SH4_202
367 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
372 depends on CPU_SUBTYPE_SH7751R
373 select SYS_SUPPORTS_PCI
375 I-O DATA DEVICE, INC. "LANDISK Series" support.
379 depends on CPU_SUBTYPE_SH7751R
380 select CPU_HAS_IPR_IRQ
381 select SYS_SUPPORTS_PCI
383 Select Titan if you are configuring for a Nimble Microsystems
388 depends on CPU_SUBTYPE_SH7706
389 select CPU_HAS_IPR_IRQ
391 Select SHMIN if configuring for the SHMIN board.
395 depends on CPU_SUBTYPE_SH7751R
396 select SYS_SUPPORTS_PCI
398 Select L-BOX RE2 if configuring for the NTT COMWARE L-BOX RE2.
402 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
403 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
404 source "arch/sh/boards/renesas/r7780rp/Kconfig"
406 menu "Timer and clock configuration"
409 bool "TMU timer support"
410 depends on CPU_SH3 || CPU_SH4
412 select GENERIC_CLOCKEVENTS
415 This enables the use of the TMU as the system timer.
418 bool "CMT timer support"
422 This enables the use of the CMT as the system timer.
425 bool "MTU2 timer support"
429 This enables the use of the MTU2 as the system timer.
433 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
434 default "86" if CPU_SUBTYPE_SH7619
435 default "140" if CPU_SUBTYPE_SH7206
439 int "Peripheral clock frequency (in Hz)"
440 default "27000000" if CPU_SUBTYPE_SH7343
441 default "31250000" if CPU_SUBTYPE_SH7619
442 default "32000000" if CPU_SUBTYPE_SH7722
443 default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
444 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
446 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
447 default "66000000" if CPU_SUBTYPE_SH4_202
450 This option is used to specify the peripheral clock frequency.
451 This is necessary for determining the reference clock value on
452 platforms lacking an RTC.
455 int "CPU Mode Pin Setting"
456 depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
457 default 6 if CPU_SUBTYPE_SH7206
458 default 5 if CPU_SUBTYPE_SH7619
461 MD2 - MD0 pin setting.
463 source "kernel/time/Kconfig"
467 menu "CPU Frequency scaling"
469 source "drivers/cpufreq/Kconfig"
472 tristate "SuperH CPU Frequency driver"
474 select CPU_FREQ_TABLE
476 This adds the cpufreq driver for SuperH. At present, only
477 the SH-4 is supported.
479 For details, take a look at <file:Documentation/cpu-freq>.
485 source "arch/sh/drivers/Kconfig"
491 depends on SH_MPC1211
494 menu "Kernel features"
496 source kernel/Kconfig.hz
499 bool "kexec system call (EXPERIMENTAL)"
500 depends on EXPERIMENTAL
502 kexec is a system call that implements the ability to shutdown your
503 current kernel, and to start another kernel. It is like a reboot
504 but it is independent of the system firmware. And like a reboot
505 you can start any kernel with it, not just Linux.
507 The name comes from the similarity to the exec system call.
509 It is an ongoing process to be certain the hardware in a machine
510 is properly shutdown, so do not be surprised if this code does not
511 initially work for you. It may help to enable device hotplugging
512 support. As of this writing the exact hardware interface is
513 strongly in flux, so no good recommendation can be made.
516 bool "kernel crash dumps (EXPERIMENTAL)"
517 depends on EXPERIMENTAL
519 Generate crash dump after being started by kexec.
520 This should be normally only set in special crash dump kernels
521 which are loaded in the main kernel with kexec-tools into
522 a specially reserved region and then later executed after
523 a crash by kdump/kexec. The crash dump kernel must be compiled
524 to a memory address not used by the main kernel using
527 For more details see Documentation/kdump/kdump.txt
530 bool "Symmetric multi-processing support"
531 depends on SYS_SUPPORTS_SMP
533 This enables support for systems with more than one CPU. If you have
534 a system with only one CPU, like most personal computers, say N. If
535 you have a system with more than one CPU, say Y.
537 If you say N here, the kernel will run on single and multiprocessor
538 machines, but will use only one CPU of a multiprocessor machine. If
539 you say Y here, the kernel will run on many, but not all,
540 singleprocessor machines. On a singleprocessor machine, the kernel
541 will run faster if you say N here.
543 People using multiprocessor machines who say Y here should also say
544 Y to "Enhanced Real Time Clock Support", below.
546 See also the <file:Documentation/smp.txt>,
547 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
548 at <http://www.tldp.org/docs.html#howto>.
550 If you don't know what to do here, say N.
553 int "Maximum number of CPUs (2-32)"
556 default "4" if CPU_SHX3
559 This allows you to specify the maximum number of CPUs which this
560 kernel will support. The maximum supported value is 32 and the
561 minimum value which makes sense is 2.
563 This is purely to save memory - each supported CPU adds
564 approximately eight kilobytes to the kernel image.
566 source "kernel/Kconfig.preempt"
571 depends on NEED_MULTIPLE_NODES
577 config ZERO_PAGE_OFFSET
578 hex "Zero page offset"
579 default "0x00004000" if SH_MPC1211 || 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"
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 "Compact Flash Enabler support"
666 depends on SOLUTION_ENGINE || SH_SH03
668 Compact Flash is a small, removable mass storage device introduced
669 in 1994 originally as a PCMCIA device. If you say `Y' here, you
670 compile in support for Compact Flash devices directly connected to
671 a SuperH processor. A Compact Flash FAQ is available at
672 <http://www.compactflash.org/faqs/faq.htm>.
674 If your board has "Directly Connected" CompactFlash at area 5 or 6,
675 you may want to enable this option. Then, you can use CF as
676 primary IDE drive (only tested for SanDisk).
678 If in doubt, select 'N'.
681 prompt "Compact Flash Connection Area"
682 depends on CF_ENABLER
688 If your board has "Directly Connected" CompactFlash, You should
689 select the area where your CF is connected to.
691 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
692 - "Area6" if it is connected to Area 6 (0x18000000)
694 "Area6" will work for most boards.
703 depends on CF_ENABLER
704 default "0xb8000000" if CF_AREA6
705 default "0xb4000000" if CF_AREA5
707 source "arch/sh/drivers/pci/Kconfig"
709 source "drivers/pci/Kconfig"
711 source "drivers/pcmcia/Kconfig"
713 source "drivers/pci/hotplug/Kconfig"
717 menu "Executable file formats"
719 source "fs/Kconfig.binfmt"
723 menu "Power management options (EXPERIMENTAL)"
724 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
726 source kernel/power/Kconfig
732 source "drivers/Kconfig"
736 source "arch/sh/oprofile/Kconfig"
738 source "arch/sh/Kconfig.debug"
740 source "security/Kconfig"
742 source "crypto/Kconfig"