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_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.
209 config SOLUTION_ENGINE
212 config SH_SOLUTION_ENGINE
213 bool "SolutionEngine"
214 select SOLUTION_ENGINE
215 select CPU_HAS_IPR_IRQ
216 depends on CPU_SUBTYPE_SH7709 || CPU_SUBTYPE_SH7750
218 Select SolutionEngine if configuring for a Hitachi SH7709
219 or SH7750 evaluation board.
221 config SH_7206_SOLUTION_ENGINE
222 bool "SolutionEngine7206"
223 select SOLUTION_ENGINE
224 depends on CPU_SUBTYPE_SH7206
226 Select 7206 SolutionEngine if configuring for a Hitachi SH7206
229 config SH_7619_SOLUTION_ENGINE
230 bool "SolutionEngine7619"
231 select SOLUTION_ENGINE
232 depends on CPU_SUBTYPE_SH7619
234 Select 7619 SolutionEngine if configuring for a Hitachi SH7619
237 config SH_7722_SOLUTION_ENGINE
238 bool "SolutionEngine7722"
239 select SOLUTION_ENGINE
240 depends on CPU_SUBTYPE_SH7722
242 Select 7722 SolutionEngine if configuring for a Hitachi SH772
245 config SH_7751_SOLUTION_ENGINE
246 bool "SolutionEngine7751"
247 select SOLUTION_ENGINE
248 select CPU_HAS_IPR_IRQ
249 depends on CPU_SUBTYPE_SH7751
251 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
254 config SH_7780_SOLUTION_ENGINE
255 bool "SolutionEngine7780"
256 select SOLUTION_ENGINE
257 select SYS_SUPPORTS_PCI
258 depends on CPU_SUBTYPE_SH7780
260 Select 7780 SolutionEngine if configuring for a Renesas SH7780
263 config SH_7343_SOLUTION_ENGINE
264 bool "SolutionEngine7343"
265 select SOLUTION_ENGINE
266 depends on CPU_SUBTYPE_SH7343
268 Select 7343 SolutionEngine if configuring for a Hitachi
269 SH7343 (SH-Mobile 3AS) evaluation board.
271 config SH_7751_SYSTEMH
273 depends on CPU_SUBTYPE_SH7751R
275 Select SystemH if you are configuring for a Renesas SystemH
276 7751R evaluation board.
280 select SYS_SUPPORTS_APM_EMULATION
281 select HD6446X_SERIES
282 depends on CPU_SUBTYPE_SH7709
284 Select HP6XX if configuring for a HP jornada HP6xx.
285 More information (hardware only) at
286 <http://www.hp.com/jornada/>.
290 select SYS_SUPPORTS_PCI
291 depends on CPU_SUBTYPE_SH7091
293 Select Dreamcast if configuring for a SEGA Dreamcast.
295 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
296 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
299 bool "Interface MPC1211"
300 depends on CPU_SUBTYPE_SH7751 && BROKEN
302 CTP/PCI-SH02 is a CPU module computer that is produced
303 by Interface Corporation.
304 More information at <http://www.interface.co.jp>
307 bool "Interface CTP/PCI-SH03"
308 depends on CPU_SUBTYPE_SH7751
309 select CPU_HAS_IPR_IRQ
310 select SYS_SUPPORTS_PCI
312 CTP/PCI-SH03 is a CPU module computer that is produced
313 by Interface Corporation.
314 More information at <http://www.interface.co.jp>
316 config SH_SECUREEDGE5410
317 bool "SecureEdge5410"
318 depends on CPU_SUBTYPE_SH7751R
319 select CPU_HAS_IPR_IRQ
320 select SYS_SUPPORTS_PCI
322 Select SecureEdge5410 if configuring for a SnapGear SH board.
323 This includes both the OEM SecureEdge products as well as the
326 config SH_HS7751RVOIP
328 depends on CPU_SUBTYPE_SH7751R
330 Select HS7751RVOIP if configuring for a Renesas Technology
334 bool "SH7710-VOIP-GW"
335 depends on CPU_SUBTYPE_SH7710
337 Select this option to build a kernel for the SH7710 based
342 depends on CPU_SUBTYPE_SH7751R
343 select SYS_SUPPORTS_PCI
345 Select RTS7751R2D if configuring for a Renesas Technology
346 Sales SH-Graphics board.
350 depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
351 select SYS_SUPPORTS_PCI
355 depends on CPU_SUBTYPE_SH7705
357 config SH_SH4202_MICRODEV
358 bool "SH4-202 MicroDev"
359 depends on CPU_SUBTYPE_SH4_202
361 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
366 depends on CPU_SUBTYPE_SH7751R
367 select SYS_SUPPORTS_PCI
369 I-O DATA DEVICE, INC. "LANDISK Series" support.
373 depends on CPU_SUBTYPE_SH7751R
374 select CPU_HAS_IPR_IRQ
375 select SYS_SUPPORTS_PCI
377 Select Titan if you are configuring for a Nimble Microsystems
382 depends on CPU_SUBTYPE_SH7706
383 select CPU_HAS_IPR_IRQ
385 Select SHMIN if configuring for the SHMIN board.
389 depends on CPU_SUBTYPE_SH7751R
390 select SYS_SUPPORTS_PCI
392 Select L-BOX RE2 if configuring for the NTT COMWARE L-BOX RE2.
396 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
397 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
398 source "arch/sh/boards/renesas/r7780rp/Kconfig"
400 menu "Timer and clock configuration"
403 bool "TMU timer support"
404 depends on CPU_SH3 || CPU_SH4
406 select GENERIC_CLOCKEVENTS
409 This enables the use of the TMU as the system timer.
412 bool "CMT timer support"
416 This enables the use of the CMT as the system timer.
419 bool "MTU2 timer support"
423 This enables the use of the MTU2 as the system timer.
427 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
428 default "86" if CPU_SUBTYPE_SH7619
429 default "140" if CPU_SUBTYPE_SH7206
433 int "Peripheral clock frequency (in Hz)"
434 default "27000000" if CPU_SUBTYPE_SH7343
435 default "31250000" if CPU_SUBTYPE_SH7619
436 default "32000000" if CPU_SUBTYPE_SH7722
437 default "33333333" if CPU_SUBTYPE_SH7770 || \
438 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
440 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
441 default "66000000" if CPU_SUBTYPE_SH4_202
444 This option is used to specify the peripheral clock frequency.
445 This is necessary for determining the reference clock value on
446 platforms lacking an RTC.
449 int "CPU Mode Pin Setting"
450 depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
451 default 6 if CPU_SUBTYPE_SH7206
452 default 5 if CPU_SUBTYPE_SH7619
455 MD2 - MD0 pin setting.
457 source "kernel/time/Kconfig"
461 menu "CPU Frequency scaling"
463 source "drivers/cpufreq/Kconfig"
466 tristate "SuperH CPU Frequency driver"
468 select CPU_FREQ_TABLE
470 This adds the cpufreq driver for SuperH. At present, only
471 the SH-4 is supported.
473 For details, take a look at <file:Documentation/cpu-freq>.
479 source "arch/sh/drivers/Kconfig"
485 depends on SH_MPC1211
488 menu "Kernel features"
490 source kernel/Kconfig.hz
493 bool "kexec system call (EXPERIMENTAL)"
494 depends on EXPERIMENTAL
496 kexec is a system call that implements the ability to shutdown your
497 current kernel, and to start another kernel. It is like a reboot
498 but it is independent of the system firmware. And like a reboot
499 you can start any kernel with it, not just Linux.
501 The name comes from the similarity to the exec system call.
503 It is an ongoing process to be certain the hardware in a machine
504 is properly shutdown, so do not be surprised if this code does not
505 initially work for you. It may help to enable device hotplugging
506 support. As of this writing the exact hardware interface is
507 strongly in flux, so no good recommendation can be made.
510 bool "kernel crash dumps (EXPERIMENTAL)"
511 depends on EXPERIMENTAL
513 Generate crash dump after being started by kexec.
514 This should be normally only set in special crash dump kernels
515 which are loaded in the main kernel with kexec-tools into
516 a specially reserved region and then later executed after
517 a crash by kdump/kexec. The crash dump kernel must be compiled
518 to a memory address not used by the main kernel using
521 For more details see Documentation/kdump/kdump.txt
524 bool "Symmetric multi-processing support"
525 depends on SYS_SUPPORTS_SMP
527 This enables support for systems with more than one CPU. If you have
528 a system with only one CPU, like most personal computers, say N. If
529 you have a system with more than one CPU, say Y.
531 If you say N here, the kernel will run on single and multiprocessor
532 machines, but will use only one CPU of a multiprocessor machine. If
533 you say Y here, the kernel will run on many, but not all,
534 singleprocessor machines. On a singleprocessor machine, the kernel
535 will run faster if you say N here.
537 People using multiprocessor machines who say Y here should also say
538 Y to "Enhanced Real Time Clock Support", below.
540 See also the <file:Documentation/smp.txt>,
541 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
542 at <http://www.tldp.org/docs.html#howto>.
544 If you don't know what to do here, say N.
547 int "Maximum number of CPUs (2-32)"
550 default "4" if CPU_SHX3
553 This allows you to specify the maximum number of CPUs which this
554 kernel will support. The maximum supported value is 32 and the
555 minimum value which makes sense is 2.
557 This is purely to save memory - each supported CPU adds
558 approximately eight kilobytes to the kernel image.
560 source "kernel/Kconfig.preempt"
565 depends on NEED_MULTIPLE_NODES
571 config ZERO_PAGE_OFFSET
572 hex "Zero page offset"
573 default "0x00004000" if SH_MPC1211 || SH_SH03
574 default "0x00010000" if PAGE_SIZE_64KB
575 default "0x00002000" if PAGE_SIZE_8KB
578 This sets the default offset of zero page.
580 config BOOT_LINK_OFFSET
581 hex "Link address offset for booting"
584 This option allows you to set the link address offset of the zImage.
585 This can be useful if you are on a board which has a small amount of
589 bool "Wakeup UBC on startup"
592 Selecting this option will wakeup the User Break Controller (UBC) on
593 startup. Although the UBC is left in an awake state when the processor
594 comes up, some boot loaders misbehave by putting the UBC to sleep in a
595 power saving state, which causes issues with things like ptrace().
600 bool "Default bootloader kernel arguments"
603 string "Initial kernel command string"
604 depends on CMDLINE_BOOL
605 default "console=ttySC1,115200"
611 # Even on SuperH devices which don't have an ISA bus,
612 # this variable helps the PCMCIA modules handle
613 # IRQ requesting properly -- Greg Banks.
615 # Though we're generally not interested in it when
616 # we're not using PCMCIA, so we make it dependent on
617 # PCMCIA outright. -- PFM.
620 depends on PCMCIA && HD6446X_SERIES
622 Find out whether you have ISA slots on your motherboard. ISA is the
623 name of a bus system, i.e. the way the CPU talks to the other stuff
624 inside your box. Other bus systems are PCI, EISA, MicroChannel
625 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
626 newer boards don't support it. If you have ISA, say Y, otherwise N.
631 The Extended Industry Standard Architecture (EISA) bus was
632 developed as an open alternative to the IBM MicroChannel bus.
634 The EISA bus provided some of the features of the IBM MicroChannel
635 bus while maintaining backward compatibility with cards made for
636 the older ISA bus. The EISA bus saw limited use between 1988 and
637 1995 when it was made obsolete by the PCI bus.
639 Say Y here if you are building a kernel for an EISA-based machine.
646 MicroChannel Architecture is found in some IBM PS/2 machines and
647 laptops. It is a bus system similar to PCI or ISA. See
648 <file:Documentation/mca.txt> (and especially the web page given
649 there) before attempting to build an MCA bus kernel.
655 tristate "SuperHyway Bus support"
656 depends on CPU_SUBTYPE_SH4_202
659 bool "Compact Flash Enabler support"
660 depends on SOLUTION_ENGINE || SH_SH03
662 Compact Flash is a small, removable mass storage device introduced
663 in 1994 originally as a PCMCIA device. If you say `Y' here, you
664 compile in support for Compact Flash devices directly connected to
665 a SuperH processor. A Compact Flash FAQ is available at
666 <http://www.compactflash.org/faqs/faq.htm>.
668 If your board has "Directly Connected" CompactFlash at area 5 or 6,
669 you may want to enable this option. Then, you can use CF as
670 primary IDE drive (only tested for SanDisk).
672 If in doubt, select 'N'.
675 prompt "Compact Flash Connection Area"
676 depends on CF_ENABLER
682 If your board has "Directly Connected" CompactFlash, You should
683 select the area where your CF is connected to.
685 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
686 - "Area6" if it is connected to Area 6 (0x18000000)
688 "Area6" will work for most boards.
697 depends on CF_ENABLER
698 default "0xb8000000" if CF_AREA6
699 default "0xb4000000" if CF_AREA5
701 source "arch/sh/drivers/pci/Kconfig"
703 source "drivers/pci/Kconfig"
705 source "drivers/pcmcia/Kconfig"
707 source "drivers/pci/hotplug/Kconfig"
711 menu "Executable file formats"
713 source "fs/Kconfig.binfmt"
717 menu "Power management options (EXPERIMENTAL)"
718 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
720 source kernel/power/Kconfig
726 source "drivers/Kconfig"
730 source "arch/sh/oprofile/Kconfig"
732 source "arch/sh/Kconfig.debug"
734 source "security/Kconfig"
736 source "crypto/Kconfig"