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 ARCH_MAY_HAVE_PC_FDC
54 config STACKTRACE_SUPPORT
58 config LOCKDEP_SUPPORT
66 config SOLUTION_ENGINE
70 prompt "SuperH system type"
73 config SH_SOLUTION_ENGINE
75 select SOLUTION_ENGINE
77 Select SolutionEngine if configuring for a Hitachi SH7709
78 or SH7750 evaluation board.
80 config SH_7751_SOLUTION_ENGINE
81 bool "SolutionEngine7751"
82 select SOLUTION_ENGINE
83 select CPU_SUBTYPE_SH7751
85 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
88 config SH_7300_SOLUTION_ENGINE
89 bool "SolutionEngine7300"
90 select SOLUTION_ENGINE
91 select CPU_SUBTYPE_SH7300
93 Select 7300 SolutionEngine if configuring for a Hitachi
94 SH7300(SH-Mobile V) evaluation board.
96 config SH_7343_SOLUTION_ENGINE
97 bool "SolutionEngine7343"
98 select SOLUTION_ENGINE
99 select CPU_SUBTYPE_SH7343
101 Select 7343 SolutionEngine if configuring for a Hitachi
102 SH7343 (SH-Mobile 3AS) evaluation board.
104 config SH_73180_SOLUTION_ENGINE
105 bool "SolutionEngine73180"
106 select SOLUTION_ENGINE
107 select CPU_SUBTYPE_SH73180
109 Select 73180 SolutionEngine if configuring for a Hitachi
110 SH73180(SH-Mobile 3) evaluation board.
112 config SH_7751_SYSTEMH
114 select CPU_SUBTYPE_SH7751R
116 Select SystemH if you are configuring for a Renesas SystemH
117 7751R evaluation board.
122 Select HP6XX if configuring for a HP jornada HP6xx.
123 More information (hardware only) at
124 <http://www.hp.com/jornada/>.
129 Select EC3104 if configuring for a system with an Eclipse
130 International EC3104 chip, e.g. the Harris AD2000.
134 select CPU_SUBTYPE_SH7604
136 Select Saturn if configuring for a SEGA Saturn.
140 select CPU_SUBTYPE_SH7091
142 Select Dreamcast if configuring for a SEGA Dreamcast.
144 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
145 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
151 bool "Interface MPC1211"
153 CTP/PCI-SH02 is a CPU module computer that is produced
154 by Interface Corporation.
155 More information at <http://www.interface.co.jp>
158 bool "Interface CTP/PCI-SH03"
160 CTP/PCI-SH03 is a CPU module computer that is produced
161 by Interface Corporation.
162 More information at <http://www.interface.co.jp>
164 config SH_SECUREEDGE5410
165 bool "SecureEdge5410"
166 select CPU_SUBTYPE_SH7751R
168 Select SecureEdge5410 if configuring for a SnapGear SH board.
169 This includes both the OEM SecureEdge products as well as the
172 config SH_HS7751RVOIP
174 select CPU_SUBTYPE_SH7751R
176 Select HS7751RVOIP if configuring for a Renesas Technology
180 bool "SH7710-VOIP-GW"
181 select CPU_SUBTYPE_SH7710
183 Select this option to build a kernel for the SH7710 based
188 select CPU_SUBTYPE_SH7751R
190 Select RTS7751R2D if configuring for a Renesas Technology
191 Sales SH-Graphics board.
195 select CPU_SUBTYPE_SH7780
197 Select R7780RP-1 if configuring for a Renesas Solutions
202 select CPU_SUBTYPE_SH7705
204 config SH_SH4202_MICRODEV
205 bool "SH4-202 MicroDev"
206 select CPU_SUBTYPE_SH4_202
208 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
213 select CPU_SUBTYPE_SH7751R
215 I-O DATA DEVICE, INC. "LANDISK Series" support.
219 select CPU_SUBTYPE_SH7751R
221 Select Titan if you are configuring for a Nimble Microsystems
226 select CPU_SUBTYPE_SH7706
228 Select SHMIN if configuring for the SHMIN board.
230 config SH_7206_SOLUTION_ENGINE
231 bool "SolutionEngine7206"
232 select CPU_SUBTYPE_SH7206
234 Select 7206 SolutionEngine if configuring for a Hitachi SH7206
237 config SH_7619_SOLUTION_ENGINE
238 bool "SolutionEngine7619"
239 select CPU_SUBTYPE_SH7619
241 Select 7619 SolutionEngine if configuring for a Hitachi SH7619
247 "Bare CPU" aka "unknown" means an SH-based system which is not one
248 of the specific ones mentioned above, which means you need to enter
249 all sorts of stuff like CONFIG_MEMORY_START because the config
250 system doesn't already know what it is. You get a machine vector
251 without any platform-specific code in it, so things like the RTC may
254 This option is for the early stages of porting to a new machine.
258 source "arch/sh/mm/Kconfig"
261 bool "Compact Flash Enabler support"
262 depends on SH_SOLUTION_ENGINE || SH_UNKNOWN || SH_SH03
264 Compact Flash is a small, removable mass storage device introduced
265 in 1994 originally as a PCMCIA device. If you say `Y' here, you
266 compile in support for Compact Flash devices directly connected to
267 a SuperH processor. A Compact Flash FAQ is available at
268 <http://www.compactflash.org/faqs/faq.htm>.
270 If your board has "Directly Connected" CompactFlash at area 5 or 6,
271 you may want to enable this option. Then, you can use CF as
272 primary IDE drive (only tested for SanDisk).
274 If in doubt, select 'N'.
277 prompt "Compact Flash Connection Area"
278 depends on CF_ENABLER
284 If your board has "Directly Connected" CompactFlash, You should
285 select the area where your CF is connected to.
287 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
288 - "Area6" if it is connected to Area 6 (0x18000000)
290 "Area6" will work for most boards.
299 depends on CF_ENABLER
300 default "0xb8000000" if CF_AREA6
301 default "0xb4000000" if CF_AREA5
303 menu "Processor features"
306 prompt "Endianess selection"
307 default CPU_LITTLE_ENDIAN
309 Some SuperH machines can be configured for either little or big
310 endian byte order. These modes require different kernels.
312 config CPU_LITTLE_ENDIAN
315 config CPU_BIG_ENDIAN
325 Selecting this option will enable support for SH processors that
326 have FPU units (ie, SH77xx).
328 This option must be set in order to enable the FPU.
331 bool "FPU emulation support"
332 depends on !SH_FPU && EXPERIMENTAL
335 Selecting this option will enable support for software FPU emulation.
336 Most SH-3 users will want to say Y here, whereas most SH-4 users will
341 default y if SH4AL_DSP || !CPU_SH4
344 Selecting this option will enable support for SH processors that
345 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
347 This option must be set in order to enable the DSP.
354 Selecting this option will allow the Linux kernel to use SH3 on-chip
359 config SH_STORE_QUEUES
360 bool "Support for Store Queues"
363 Selecting this option will enable an in-kernel API for manipulating
364 the store queues integrated in the SH-4 processors.
366 config CPU_HAS_INTEVT
369 config CPU_HAS_PINT_IRQ
372 config CPU_HAS_MASKREG_IRQ
375 config CPU_HAS_INTC2_IRQ
378 config CPU_HAS_IPR_IRQ
383 depends on CPU_SH3 || CPU_SH4
386 This will enable the use of SR.RB register bank usage. Processors
387 that are lacking this bit must have another method in place for
388 accomplishing what is taken care of by the banked registers.
390 See <file:Documentation/sh/register-banks.txt> for further
391 information on SR.RB and register banking in the kernel in general.
399 depends on !GENERIC_TIME
402 bool "TMU timer support"
403 depends on CPU_SH3 || CPU_SH4
406 This enables the use of the TMU as the system timer.
409 bool "CMT timer support"
413 This enables the use of the CMT as the system timer.
416 bool "MTU2 timer support"
420 This enables the use of the MTU2 as the system timer.
424 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
426 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
428 source "arch/sh/boards/renesas/r7780rp/Kconfig"
432 default "28" if CPU_SUBTYPE_SH7780
433 default "86" if CPU_SUBTYPE_SH7619
434 default "140" if CPU_SUBTYPE_SH7206
438 bool "Dynamic tick timer"
440 Select this option if you want to disable continuous timer ticks
441 and have them programmed to occur as required. This option saves
442 power as the system can remain in idle state for longer.
444 By default dynamic tick is disabled during the boot, and can be
445 manually enabled with:
447 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
449 Alternatively, if you want dynamic tick automatically enabled
450 during boot, pass "dyntick=enable" via the kernel command string.
452 Please note that dynamic tick may affect the accuracy of
453 timekeeping on some platforms depending on the implementation.
456 int "Peripheral clock frequency (in Hz)"
457 default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
458 default "31250000" if CPU_SUBTYPE_SH7619
459 default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
460 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
462 default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
463 default "60000000" if CPU_SUBTYPE_SH7751
464 default "66000000" if CPU_SUBTYPE_SH4_202
466 This option is used to specify the peripheral clock frequency.
467 This is necessary for determining the reference clock value on
468 platforms lacking an RTC.
471 int "CPU Mode Pin Setting"
472 depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
476 menu "CPU Frequency scaling"
478 source "drivers/cpufreq/Kconfig"
481 tristate "SuperH CPU Frequency driver"
483 select CPU_FREQ_TABLE
485 This adds the cpufreq driver for SuperH. At present, only
486 the SH-4 is supported.
488 For details, take a look at <file:Documentation/cpu-freq>.
494 source "arch/sh/drivers/dma/Kconfig"
496 source "arch/sh/cchips/Kconfig"
500 depends on SH_MPC1211 || SH_SH03 || \
501 SH_BIGSUR || SOLUTION_ENGINE || \
502 SH_RTS7751R2D || SH_SH4202_MICRODEV || SH_LANDISK
504 Use the power-on LED on your machine as a load meter. The exact
505 behavior is platform-dependent, but normally the flash frequency is
506 a hyperbolic function of the 5-minute load average.
508 source "arch/sh/drivers/Kconfig"
514 depends on SH_MPC1211
517 menu "Kernel features"
519 source kernel/Kconfig.hz
522 bool "kexec system call (EXPERIMENTAL)"
523 depends on EXPERIMENTAL
525 kexec is a system call that implements the ability to shutdown your
526 current kernel, and to start another kernel. It is like a reboot
527 but it is independent of the system firmware. And like a reboot
528 you can start any kernel with it, not just Linux.
530 The name comes from the similarity to the exec system call.
532 It is an ongoing process to be certain the hardware in a machine
533 is properly shutdown, so do not be surprised if this code does not
534 initially work for you. It may help to enable device hotplugging
535 support. As of this writing the exact hardware interface is
536 strongly in flux, so no good recommendation can be made.
539 bool "Symmetric multi-processing support"
541 This enables support for systems with more than one CPU. If you have
542 a system with only one CPU, like most personal computers, say N. If
543 you have a system with more than one CPU, say Y.
545 If you say N here, the kernel will run on single and multiprocessor
546 machines, but will use only one CPU of a multiprocessor machine. If
547 you say Y here, the kernel will run on many, but not all,
548 singleprocessor machines. On a singleprocessor machine, the kernel
549 will run faster if you say N here.
551 People using multiprocessor machines who say Y here should also say
552 Y to "Enhanced Real Time Clock Support", below.
554 See also the <file:Documentation/smp.txt>,
555 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
556 at <http://www.tldp.org/docs.html#howto>.
558 If you don't know what to do here, say N.
561 int "Maximum number of CPUs (2-32)"
566 This allows you to specify the maximum number of CPUs which this
567 kernel will support. The maximum supported value is 32 and the
568 minimum value which makes sense is 2.
570 This is purely to save memory - each supported CPU adds
571 approximately eight kilobytes to the kernel image.
573 source "kernel/Kconfig.preempt"
577 depends on CPU_SH3 || CPU_SH4
580 This will enable the use of SR.RB register bank usage. Processors
581 that are lacking this bit must have another method in place for
582 accomplishing what is taken care of by the banked registers.
584 See <file:Documentation/sh/register-banks.txt> for further
585 information on SR.RB and register banking in the kernel in general.
590 depends on NEED_MULTIPLE_NODES
596 config ZERO_PAGE_OFFSET
597 hex "Zero page offset"
598 default "0x00004000" if SH_MPC1211 || SH_SH03
601 This sets the default offset of zero page.
603 config BOOT_LINK_OFFSET
604 hex "Link address offset for booting"
607 This option allows you to set the link address offset of the zImage.
608 This can be useful if you are on a board which has a small amount of
612 bool "Wakeup UBC on startup"
614 Selecting this option will wakeup the User Break Controller (UBC) on
615 startup. Although the UBC is left in an awake state when the processor
616 comes up, some boot loaders misbehave by putting the UBC to sleep in a
617 power saving state, which causes issues with things like ptrace().
622 bool "Default bootloader kernel arguments"
625 string "Initial kernel command string"
626 depends on CMDLINE_BOOL
627 default "console=ttySC1,115200"
633 # Even on SuperH devices which don't have an ISA bus,
634 # this variable helps the PCMCIA modules handle
635 # IRQ requesting properly -- Greg Banks.
637 # Though we're generally not interested in it when
638 # we're not using PCMCIA, so we make it dependent on
639 # PCMCIA outright. -- PFM.
644 Find out whether you have ISA slots on your motherboard. ISA is the
645 name of a bus system, i.e. the way the CPU talks to the other stuff
646 inside your box. Other bus systems are PCI, EISA, MicroChannel
647 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
648 newer boards don't support it. If you have ISA, say Y, otherwise N.
653 The Extended Industry Standard Architecture (EISA) bus was
654 developed as an open alternative to the IBM MicroChannel bus.
656 The EISA bus provided some of the features of the IBM MicroChannel
657 bus while maintaining backward compatibility with cards made for
658 the older ISA bus. The EISA bus saw limited use between 1988 and
659 1995 when it was made obsolete by the PCI bus.
661 Say Y here if you are building a kernel for an EISA-based machine.
668 MicroChannel Architecture is found in some IBM PS/2 machines and
669 laptops. It is a bus system similar to PCI or ISA. See
670 <file:Documentation/mca.txt> (and especially the web page given
671 there) before attempting to build an MCA bus kernel.
677 tristate "SuperHyway Bus support"
678 depends on CPU_SUBTYPE_SH4_202
680 source "arch/sh/drivers/pci/Kconfig"
682 source "drivers/pci/Kconfig"
684 source "drivers/pcmcia/Kconfig"
686 source "drivers/pci/hotplug/Kconfig"
690 menu "Executable file formats"
692 source "fs/Kconfig.binfmt"
696 menu "Power management options (EXPERIMENTAL)"
697 depends on EXPERIMENTAL
699 source kernel/power/Kconfig
702 bool "Advanced Power Management Emulation"
708 source "drivers/Kconfig"
712 source "arch/sh/oprofile/Kconfig"
714 source "arch/sh/Kconfig.debug"
716 source "security/Kconfig"
718 source "crypto/Kconfig"