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
25 config GENERIC_FIND_NEXT_BIT
29 config GENERIC_HWEIGHT
33 config GENERIC_HARDIRQS
37 config GENERIC_IRQ_PROBE
41 config GENERIC_CALIBRATE_DELAY
51 config SYS_SUPPORTS_APM_EMULATION
54 config ARCH_MAY_HAVE_PC_FDC
57 config STACKTRACE_SUPPORT
61 config LOCKDEP_SUPPORT
65 config ARCH_HAS_ILOG2_U32
69 config ARCH_HAS_ILOG2_U64
77 config SOLUTION_ENGINE
81 prompt "SuperH system type"
84 config SH_SOLUTION_ENGINE
86 select SOLUTION_ENGINE
88 Select SolutionEngine if configuring for a Hitachi SH7709
89 or SH7750 evaluation board.
91 config SH_7751_SOLUTION_ENGINE
92 bool "SolutionEngine7751"
93 select SOLUTION_ENGINE
94 select CPU_SUBTYPE_SH7751
96 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
99 config SH_7300_SOLUTION_ENGINE
100 bool "SolutionEngine7300"
101 select SOLUTION_ENGINE
102 select CPU_SUBTYPE_SH7300
104 Select 7300 SolutionEngine if configuring for a Hitachi
105 SH7300(SH-Mobile V) evaluation board.
107 config SH_7343_SOLUTION_ENGINE
108 bool "SolutionEngine7343"
109 select SOLUTION_ENGINE
110 select CPU_SUBTYPE_SH7343
112 Select 7343 SolutionEngine if configuring for a Hitachi
113 SH7343 (SH-Mobile 3AS) evaluation board.
115 config SH_73180_SOLUTION_ENGINE
116 bool "SolutionEngine73180"
117 select SOLUTION_ENGINE
118 select CPU_SUBTYPE_SH73180
120 Select 73180 SolutionEngine if configuring for a Hitachi
121 SH73180(SH-Mobile 3) evaluation board.
123 config SH_7751_SYSTEMH
125 select CPU_SUBTYPE_SH7751R
127 Select SystemH if you are configuring for a Renesas SystemH
128 7751R evaluation board.
132 select SYS_SUPPORTS_APM_EMULATION
134 Select HP6XX if configuring for a HP jornada HP6xx.
135 More information (hardware only) at
136 <http://www.hp.com/jornada/>.
140 select CPU_SUBTYPE_SH7604
142 Select Saturn if configuring for a SEGA Saturn.
146 select CPU_SUBTYPE_SH7091
148 Select Dreamcast if configuring for a SEGA Dreamcast.
150 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
151 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
154 bool "Interface MPC1211"
156 CTP/PCI-SH02 is a CPU module computer that is produced
157 by Interface Corporation.
158 More information at <http://www.interface.co.jp>
161 bool "Interface CTP/PCI-SH03"
163 CTP/PCI-SH03 is a CPU module computer that is produced
164 by Interface Corporation.
165 More information at <http://www.interface.co.jp>
167 config SH_SECUREEDGE5410
168 bool "SecureEdge5410"
169 select CPU_SUBTYPE_SH7751R
171 Select SecureEdge5410 if configuring for a SnapGear SH board.
172 This includes both the OEM SecureEdge products as well as the
175 config SH_HS7751RVOIP
177 select CPU_SUBTYPE_SH7751R
179 Select HS7751RVOIP if configuring for a Renesas Technology
183 bool "SH7710-VOIP-GW"
184 select CPU_SUBTYPE_SH7710
186 Select this option to build a kernel for the SH7710 based
191 select CPU_SUBTYPE_SH7751R
193 Select RTS7751R2D if configuring for a Renesas Technology
194 Sales SH-Graphics board.
198 select CPU_SUBTYPE_SH7780
200 Select R7780RP-1 if configuring for a Renesas Solutions
205 select CPU_SUBTYPE_SH7705
207 config SH_SH4202_MICRODEV
208 bool "SH4-202 MicroDev"
209 select CPU_SUBTYPE_SH4_202
211 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
216 select CPU_SUBTYPE_SH7751R
218 I-O DATA DEVICE, INC. "LANDISK Series" support.
222 select CPU_SUBTYPE_SH7751R
224 Select Titan if you are configuring for a Nimble Microsystems
229 select CPU_SUBTYPE_SH7706
231 Select SHMIN if configuring for the SHMIN board.
233 config SH_7206_SOLUTION_ENGINE
234 bool "SolutionEngine7206"
235 select CPU_SUBTYPE_SH7206
237 Select 7206 SolutionEngine if configuring for a Hitachi SH7206
240 config SH_7619_SOLUTION_ENGINE
241 bool "SolutionEngine7619"
242 select CPU_SUBTYPE_SH7619
244 Select 7619 SolutionEngine if configuring for a Hitachi SH7619
250 "Bare CPU" aka "unknown" means an SH-based system which is not one
251 of the specific ones mentioned above, which means you need to enter
252 all sorts of stuff like CONFIG_MEMORY_START because the config
253 system doesn't already know what it is. You get a machine vector
254 without any platform-specific code in it, so things like the RTC may
257 This option is for the early stages of porting to a new machine.
261 source "arch/sh/mm/Kconfig"
264 bool "Compact Flash Enabler support"
265 depends on SH_SOLUTION_ENGINE || SH_UNKNOWN || SH_SH03
267 Compact Flash is a small, removable mass storage device introduced
268 in 1994 originally as a PCMCIA device. If you say `Y' here, you
269 compile in support for Compact Flash devices directly connected to
270 a SuperH processor. A Compact Flash FAQ is available at
271 <http://www.compactflash.org/faqs/faq.htm>.
273 If your board has "Directly Connected" CompactFlash at area 5 or 6,
274 you may want to enable this option. Then, you can use CF as
275 primary IDE drive (only tested for SanDisk).
277 If in doubt, select 'N'.
280 prompt "Compact Flash Connection Area"
281 depends on CF_ENABLER
287 If your board has "Directly Connected" CompactFlash, You should
288 select the area where your CF is connected to.
290 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
291 - "Area6" if it is connected to Area 6 (0x18000000)
293 "Area6" will work for most boards.
302 depends on CF_ENABLER
303 default "0xb8000000" if CF_AREA6
304 default "0xb4000000" if CF_AREA5
306 menu "Processor features"
309 prompt "Endianess selection"
310 default CPU_LITTLE_ENDIAN
312 Some SuperH machines can be configured for either little or big
313 endian byte order. These modes require different kernels.
315 config CPU_LITTLE_ENDIAN
318 config CPU_BIG_ENDIAN
328 Selecting this option will enable support for SH processors that
329 have FPU units (ie, SH77xx).
331 This option must be set in order to enable the FPU.
334 bool "FPU emulation support"
335 depends on !SH_FPU && EXPERIMENTAL
338 Selecting this option will enable support for software FPU emulation.
339 Most SH-3 users will want to say Y here, whereas most SH-4 users will
344 default y if SH4AL_DSP || !CPU_SH4
347 Selecting this option will enable support for SH processors that
348 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
350 This option must be set in order to enable the DSP.
357 Selecting this option will allow the Linux kernel to use SH3 on-chip
362 config SH_STORE_QUEUES
363 bool "Support for Store Queues"
366 Selecting this option will enable an in-kernel API for manipulating
367 the store queues integrated in the SH-4 processors.
369 config CPU_HAS_INTEVT
372 config CPU_HAS_PINT_IRQ
375 config CPU_HAS_MASKREG_IRQ
378 config CPU_HAS_INTC2_IRQ
381 config CPU_HAS_IPR_IRQ
386 depends on CPU_SH3 || CPU_SH4
389 This will enable the use of SR.RB register bank usage. Processors
390 that are lacking this bit must have another method in place for
391 accomplishing what is taken care of by the banked registers.
393 See <file:Documentation/sh/register-banks.txt> for further
394 information on SR.RB and register banking in the kernel in general.
402 depends on !GENERIC_TIME
405 bool "TMU timer support"
406 depends on CPU_SH3 || CPU_SH4
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 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
429 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
431 source "arch/sh/boards/renesas/r7780rp/Kconfig"
435 default "28" if CPU_SUBTYPE_SH7780
436 default "86" if CPU_SUBTYPE_SH7619
437 default "140" if CPU_SUBTYPE_SH7206
441 bool "Dynamic tick timer"
443 Select this option if you want to disable continuous timer ticks
444 and have them programmed to occur as required. This option saves
445 power as the system can remain in idle state for longer.
447 By default dynamic tick is disabled during the boot, and can be
448 manually enabled with:
450 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
452 Alternatively, if you want dynamic tick automatically enabled
453 during boot, pass "dyntick=enable" via the kernel command string.
455 Please note that dynamic tick may affect the accuracy of
456 timekeeping on some platforms depending on the implementation.
459 int "Peripheral clock frequency (in Hz)"
460 default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
461 default "31250000" if CPU_SUBTYPE_SH7619
462 default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
463 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
465 default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
466 default "60000000" if CPU_SUBTYPE_SH7751
467 default "66000000" if CPU_SUBTYPE_SH4_202
469 This option is used to specify the peripheral clock frequency.
470 This is necessary for determining the reference clock value on
471 platforms lacking an RTC.
474 int "CPU Mode Pin Setting"
476 depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
478 MD2 - MD0 pin setting.
480 menu "CPU Frequency scaling"
482 source "drivers/cpufreq/Kconfig"
485 tristate "SuperH CPU Frequency driver"
487 select CPU_FREQ_TABLE
489 This adds the cpufreq driver for SuperH. At present, only
490 the SH-4 is supported.
492 For details, take a look at <file:Documentation/cpu-freq>.
498 source "arch/sh/drivers/dma/Kconfig"
500 source "arch/sh/cchips/Kconfig"
504 depends on SH_MPC1211 || SH_SH03 || \
506 SH_RTS7751R2D || SH_SH4202_MICRODEV || SH_LANDISK || \
509 Use the power-on LED on your machine as a load meter. The exact
510 behavior is platform-dependent, but normally the flash frequency is
511 a hyperbolic function of the 5-minute load average.
513 source "arch/sh/drivers/Kconfig"
519 depends on SH_MPC1211
522 menu "Kernel features"
524 source kernel/Kconfig.hz
527 bool "kexec system call (EXPERIMENTAL)"
528 depends on EXPERIMENTAL
530 kexec is a system call that implements the ability to shutdown your
531 current kernel, and to start another kernel. It is like a reboot
532 but it is independent of the system firmware. And like a reboot
533 you can start any kernel with it, not just Linux.
535 The name comes from the similarity to the exec system call.
537 It is an ongoing process to be certain the hardware in a machine
538 is properly shutdown, so do not be surprised if this code does not
539 initially work for you. It may help to enable device hotplugging
540 support. As of this writing the exact hardware interface is
541 strongly in flux, so no good recommendation can be made.
544 bool "Symmetric multi-processing support"
546 This enables support for systems with more than one CPU. If you have
547 a system with only one CPU, like most personal computers, say N. If
548 you have a system with more than one CPU, say Y.
550 If you say N here, the kernel will run on single and multiprocessor
551 machines, but will use only one CPU of a multiprocessor machine. If
552 you say Y here, the kernel will run on many, but not all,
553 singleprocessor machines. On a singleprocessor machine, the kernel
554 will run faster if you say N here.
556 People using multiprocessor machines who say Y here should also say
557 Y to "Enhanced Real Time Clock Support", below.
559 See also the <file:Documentation/smp.txt>,
560 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
561 at <http://www.tldp.org/docs.html#howto>.
563 If you don't know what to do here, say N.
566 int "Maximum number of CPUs (2-32)"
571 This allows you to specify the maximum number of CPUs which this
572 kernel will support. The maximum supported value is 32 and the
573 minimum value which makes sense is 2.
575 This is purely to save memory - each supported CPU adds
576 approximately eight kilobytes to the kernel image.
578 source "kernel/Kconfig.preempt"
583 depends on NEED_MULTIPLE_NODES
589 config ZERO_PAGE_OFFSET
590 hex "Zero page offset"
591 default "0x00004000" if SH_MPC1211 || SH_SH03
592 default "0x00010000" if PAGE_SIZE_64KB
593 default "0x00002000" if PAGE_SIZE_8KB
596 This sets the default offset of zero page.
598 config BOOT_LINK_OFFSET
599 hex "Link address offset for booting"
602 This option allows you to set the link address offset of the zImage.
603 This can be useful if you are on a board which has a small amount of
607 bool "Wakeup UBC on startup"
609 Selecting this option will wakeup the User Break Controller (UBC) on
610 startup. Although the UBC is left in an awake state when the processor
611 comes up, some boot loaders misbehave by putting the UBC to sleep in a
612 power saving state, which causes issues with things like ptrace().
617 bool "Default bootloader kernel arguments"
620 string "Initial kernel command string"
621 depends on CMDLINE_BOOL
622 default "console=ttySC1,115200"
628 # Even on SuperH devices which don't have an ISA bus,
629 # this variable helps the PCMCIA modules handle
630 # IRQ requesting properly -- Greg Banks.
632 # Though we're generally not interested in it when
633 # we're not using PCMCIA, so we make it dependent on
634 # PCMCIA outright. -- PFM.
639 Find out whether you have ISA slots on your motherboard. ISA is the
640 name of a bus system, i.e. the way the CPU talks to the other stuff
641 inside your box. Other bus systems are PCI, EISA, MicroChannel
642 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
643 newer boards don't support it. If you have ISA, say Y, otherwise N.
648 The Extended Industry Standard Architecture (EISA) bus was
649 developed as an open alternative to the IBM MicroChannel bus.
651 The EISA bus provided some of the features of the IBM MicroChannel
652 bus while maintaining backward compatibility with cards made for
653 the older ISA bus. The EISA bus saw limited use between 1988 and
654 1995 when it was made obsolete by the PCI bus.
656 Say Y here if you are building a kernel for an EISA-based machine.
663 MicroChannel Architecture is found in some IBM PS/2 machines and
664 laptops. It is a bus system similar to PCI or ISA. See
665 <file:Documentation/mca.txt> (and especially the web page given
666 there) before attempting to build an MCA bus kernel.
672 tristate "SuperHyway Bus support"
673 depends on CPU_SUBTYPE_SH4_202
675 source "arch/sh/drivers/pci/Kconfig"
677 source "drivers/pci/Kconfig"
679 source "drivers/pcmcia/Kconfig"
681 source "drivers/pci/hotplug/Kconfig"
685 menu "Executable file formats"
687 source "fs/Kconfig.binfmt"
691 menu "Power management options (EXPERIMENTAL)"
692 depends on EXPERIMENTAL
694 source kernel/power/Kconfig
700 source "drivers/Kconfig"
704 source "arch/sh/oprofile/Kconfig"
706 source "arch/sh/Kconfig.debug"
708 source "security/Kconfig"
710 source "crypto/Kconfig"