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
58 config SOLUTION_ENGINE
62 prompt "SuperH system type"
65 config SH_SOLUTION_ENGINE
67 select SOLUTION_ENGINE
69 Select SolutionEngine if configuring for a Hitachi SH7709
70 or SH7750 evaluation board.
72 config SH_7751_SOLUTION_ENGINE
73 bool "SolutionEngine7751"
74 select SOLUTION_ENGINE
75 select CPU_SUBTYPE_SH7751
77 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
80 config SH_7300_SOLUTION_ENGINE
81 bool "SolutionEngine7300"
82 select SOLUTION_ENGINE
83 select CPU_SUBTYPE_SH7300
85 Select 7300 SolutionEngine if configuring for a Hitachi
86 SH7300(SH-Mobile V) evaluation board.
88 config SH_7343_SOLUTION_ENGINE
89 bool "SolutionEngine7343"
90 select SOLUTION_ENGINE
91 select CPU_SUBTYPE_SH7343
93 Select 7343 SolutionEngine if configuring for a Hitachi
94 SH7343 (SH-Mobile 3AS) evaluation board.
96 config SH_73180_SOLUTION_ENGINE
97 bool "SolutionEngine73180"
98 select SOLUTION_ENGINE
99 select CPU_SUBTYPE_SH73180
101 Select 73180 SolutionEngine if configuring for a Hitachi
102 SH73180(SH-Mobile 3) evaluation board.
104 config SH_7751_SYSTEMH
106 select CPU_SUBTYPE_SH7751R
108 Select SystemH if you are configuring for a Renesas SystemH
109 7751R evaluation board.
114 Select HP6XX if configuring for a HP jornada HP6xx.
115 More information (hardware only) at
116 <http://www.hp.com/jornada/>.
121 Select EC3104 if configuring for a system with an Eclipse
122 International EC3104 chip, e.g. the Harris AD2000.
126 select CPU_SUBTYPE_SH7604
128 Select Saturn if configuring for a SEGA Saturn.
132 select CPU_SUBTYPE_SH7091
134 Select Dreamcast if configuring for a SEGA Dreamcast.
136 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
137 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
143 bool "Interface MPC1211"
145 CTP/PCI-SH02 is a CPU module computer that is produced
146 by Interface Corporation.
147 More information at <http://www.interface.co.jp>
150 bool "Interface CTP/PCI-SH03"
152 CTP/PCI-SH03 is a CPU module computer that is produced
153 by Interface Corporation.
154 More information at <http://www.interface.co.jp>
156 config SH_SECUREEDGE5410
157 bool "SecureEdge5410"
158 select CPU_SUBTYPE_SH7751R
160 Select SecureEdge5410 if configuring for a SnapGear SH board.
161 This includes both the OEM SecureEdge products as well as the
164 config SH_HS7751RVOIP
166 select CPU_SUBTYPE_SH7751R
168 Select HS7751RVOIP if configuring for a Renesas Technology
172 bool "SH7710-VOIP-GW"
173 select CPU_SUBTYPE_SH7710
175 Select this option to build a kernel for the SH7710 based
180 select CPU_SUBTYPE_SH7751R
182 Select RTS7751R2D if configuring for a Renesas Technology
183 Sales SH-Graphics board.
187 select CPU_SUBTYPE_SH7780
189 Select R7780RP-1 if configuring for a Renesas Solutions
194 select CPU_SUBTYPE_SH7705
196 config SH_SH4202_MICRODEV
197 bool "SH4-202 MicroDev"
198 select CPU_SUBTYPE_SH4_202
200 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
205 select CPU_SUBTYPE_SH7751R
207 I-O DATA DEVICE, INC. "LANDISK Series" support.
211 select CPU_SUBTYPE_SH7751R
213 Select Titan if you are configuring for a Nimble Microsystems
218 select CPU_SUBTYPE_SH7706
220 Select SHMIN if configuring for the SHMIN board.
222 config SH_7206_SOLUTION_ENGINE
223 bool "SolutionEngine7206"
224 select CPU_SUBTYPE_SH7206
226 Select 7206 SolutionEngine if configuring for a Hitachi SH7206
229 config SH_7619_SOLUTION_ENGINE
230 bool "SolutionEngine7619"
231 select CPU_SUBTYPE_SH7619
233 Select 7619 SolutionEngine if configuring for a Hitachi SH7619
239 "Bare CPU" aka "unknown" means an SH-based system which is not one
240 of the specific ones mentioned above, which means you need to enter
241 all sorts of stuff like CONFIG_MEMORY_START because the config
242 system doesn't already know what it is. You get a machine vector
243 without any platform-specific code in it, so things like the RTC may
246 This option is for the early stages of porting to a new machine.
250 source "arch/sh/mm/Kconfig"
253 bool "Compact Flash Enabler support"
254 depends on SH_SOLUTION_ENGINE || SH_UNKNOWN || SH_SH03
256 Compact Flash is a small, removable mass storage device introduced
257 in 1994 originally as a PCMCIA device. If you say `Y' here, you
258 compile in support for Compact Flash devices directly connected to
259 a SuperH processor. A Compact Flash FAQ is available at
260 <http://www.compactflash.org/faqs/faq.htm>.
262 If your board has "Directly Connected" CompactFlash at area 5 or 6,
263 you may want to enable this option. Then, you can use CF as
264 primary IDE drive (only tested for SanDisk).
266 If in doubt, select 'N'.
269 prompt "Compact Flash Connection Area"
270 depends on CF_ENABLER
276 If your board has "Directly Connected" CompactFlash, You should
277 select the area where your CF is connected to.
279 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
280 - "Area6" if it is connected to Area 6 (0x18000000)
282 "Area6" will work for most boards.
291 depends on CF_ENABLER
292 default "0xb8000000" if CF_AREA6
293 default "0xb4000000" if CF_AREA5
295 menu "Processor features"
298 prompt "Endianess selection"
299 default CPU_LITTLE_ENDIAN
301 Some SuperH machines can be configured for either little or big
302 endian byte order. These modes require different kernels.
304 config CPU_LITTLE_ENDIAN
307 config CPU_BIG_ENDIAN
317 Selecting this option will enable support for SH processors that
318 have FPU units (ie, SH77xx).
320 This option must be set in order to enable the FPU.
323 bool "FPU emulation support"
324 depends on !SH_FPU && EXPERIMENTAL
327 Selecting this option will enable support for software FPU emulation.
328 Most SH-3 users will want to say Y here, whereas most SH-4 users will
333 default y if SH4AL_DSP || !CPU_SH4
336 Selecting this option will enable support for SH processors that
337 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
339 This option must be set in order to enable the DSP.
346 Selecting this option will allow the Linux kernel to use SH3 on-chip
351 config SH_STORE_QUEUES
352 bool "Support for Store Queues"
355 Selecting this option will enable an in-kernel API for manipulating
356 the store queues integrated in the SH-4 processors.
358 config CPU_HAS_INTEVT
361 config CPU_HAS_PINT_IRQ
364 config CPU_HAS_MASKREG_IRQ
367 config CPU_HAS_INTC2_IRQ
372 depends on CPU_SH3 || CPU_SH4
375 This will enable the use of SR.RB register bank usage. Processors
376 that are lacking this bit must have another method in place for
377 accomplishing what is taken care of by the banked registers.
379 See <file:Documentation/sh/register-banks.txt> for further
380 information on SR.RB and register banking in the kernel in general.
388 depends on !GENERIC_TIME
391 bool "TMU timer support"
392 depends on CPU_SH3 || CPU_SH4
395 This enables the use of the TMU as the system timer.
398 bool "CMT timer support"
402 This enables the use of the CMT as the system timer.
405 bool "MTU2 timer support"
409 This enables the use of the MTU2 as the system timer.
413 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
415 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
417 source "arch/sh/boards/renesas/r7780rp/Kconfig"
421 default "28" if CPU_SUBTYPE_SH7780
422 default "86" if CPU_SUBTYPE_SH7619
423 default "140" if CPU_SUBTYPE_SH7206
427 bool "Dynamic tick timer"
429 Select this option if you want to disable continuous timer ticks
430 and have them programmed to occur as required. This option saves
431 power as the system can remain in idle state for longer.
433 By default dynamic tick is disabled during the boot, and can be
434 manually enabled with:
436 echo 1 > /sys/devices/system/timer/timer0/dyn_tick
438 Alternatively, if you want dynamic tick automatically enabled
439 during boot, pass "dyntick=enable" via the kernel command string.
441 Please note that dynamic tick may affect the accuracy of
442 timekeeping on some platforms depending on the implementation.
445 int "Peripheral clock frequency (in Hz)"
446 default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
447 default "31250000" if CPU_SUBTYPE_SH7619
448 default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
449 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
451 default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
452 default "60000000" if CPU_SUBTYPE_SH7751
453 default "66000000" if CPU_SUBTYPE_SH4_202
455 This option is used to specify the peripheral clock frequency.
456 This is necessary for determining the reference clock value on
457 platforms lacking an RTC.
460 int "CPU Mode Pin Setting"
461 depends on CPU_SUBTYPE_SH7619 || CPU_SUBTYPE_SH7206
465 menu "CPU Frequency scaling"
467 source "drivers/cpufreq/Kconfig"
470 tristate "SuperH CPU Frequency driver"
472 select CPU_FREQ_TABLE
474 This adds the cpufreq driver for SuperH. At present, only
475 the SH-4 is supported.
477 For details, take a look at <file:Documentation/cpu-freq>.
483 source "arch/sh/drivers/dma/Kconfig"
485 source "arch/sh/cchips/Kconfig"
489 depends on SH_MPC1211 || SH_SH03 || \
490 SH_BIGSUR || SOLUTION_ENGINE || \
491 SH_RTS7751R2D || SH_SH4202_MICRODEV || SH_LANDISK
493 Use the power-on LED on your machine as a load meter. The exact
494 behavior is platform-dependent, but normally the flash frequency is
495 a hyperbolic function of the 5-minute load average.
497 source "arch/sh/drivers/Kconfig"
503 depends on SH_MPC1211
506 menu "Kernel features"
508 source kernel/Kconfig.hz
511 bool "kexec system call (EXPERIMENTAL)"
512 depends on EXPERIMENTAL
514 kexec is a system call that implements the ability to shutdown your
515 current kernel, and to start another kernel. It is like a reboot
516 but it is independent of the system firmware. And like a reboot
517 you can start any kernel with it, not just Linux.
519 The name comes from the similarity to the exec system call.
521 It is an ongoing process to be certain the hardware in a machine
522 is properly shutdown, so do not be surprised if this code does not
523 initially work for you. It may help to enable device hotplugging
524 support. As of this writing the exact hardware interface is
525 strongly in flux, so no good recommendation can be made.
528 bool "Symmetric multi-processing support"
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)"
555 This allows you to specify the maximum number of CPUs which this
556 kernel will support. The maximum supported value is 32 and the
557 minimum value which makes sense is 2.
559 This is purely to save memory - each supported CPU adds
560 approximately eight kilobytes to the kernel image.
562 source "kernel/Kconfig.preempt"
566 depends on CPU_SH3 || CPU_SH4
569 This will enable the use of SR.RB register bank usage. Processors
570 that are lacking this bit must have another method in place for
571 accomplishing what is taken care of by the banked registers.
573 See <file:Documentation/sh/register-banks.txt> for further
574 information on SR.RB and register banking in the kernel in general.
579 depends on NEED_MULTIPLE_NODES
585 config ZERO_PAGE_OFFSET
586 hex "Zero page offset"
587 default "0x00004000" if SH_MPC1211 || SH_SH03
590 This sets the default offset of zero page.
592 config BOOT_LINK_OFFSET
593 hex "Link address offset for booting"
596 This option allows you to set the link address offset of the zImage.
597 This can be useful if you are on a board which has a small amount of
601 bool "Wakeup UBC on startup"
603 Selecting this option will wakeup the User Break Controller (UBC) on
604 startup. Although the UBC is left in an awake state when the processor
605 comes up, some boot loaders misbehave by putting the UBC to sleep in a
606 power saving state, which causes issues with things like ptrace().
611 bool "Default bootloader kernel arguments"
614 string "Initial kernel command string"
615 depends on CMDLINE_BOOL
616 default "console=ttySC1,115200"
622 # Even on SuperH devices which don't have an ISA bus,
623 # this variable helps the PCMCIA modules handle
624 # IRQ requesting properly -- Greg Banks.
626 # Though we're generally not interested in it when
627 # we're not using PCMCIA, so we make it dependent on
628 # PCMCIA outright. -- PFM.
633 Find out whether you have ISA slots on your motherboard. ISA is the
634 name of a bus system, i.e. the way the CPU talks to the other stuff
635 inside your box. Other bus systems are PCI, EISA, MicroChannel
636 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
637 newer boards don't support it. If you have ISA, say Y, otherwise N.
642 The Extended Industry Standard Architecture (EISA) bus was
643 developed as an open alternative to the IBM MicroChannel bus.
645 The EISA bus provided some of the features of the IBM MicroChannel
646 bus while maintaining backward compatibility with cards made for
647 the older ISA bus. The EISA bus saw limited use between 1988 and
648 1995 when it was made obsolete by the PCI bus.
650 Say Y here if you are building a kernel for an EISA-based machine.
657 MicroChannel Architecture is found in some IBM PS/2 machines and
658 laptops. It is a bus system similar to PCI or ISA. See
659 <file:Documentation/mca.txt> (and especially the web page given
660 there) before attempting to build an MCA bus kernel.
666 tristate "SuperHyway Bus support"
667 depends on CPU_SUBTYPE_SH4_202
669 source "arch/sh/drivers/pci/Kconfig"
671 source "drivers/pci/Kconfig"
673 source "drivers/pcmcia/Kconfig"
675 source "drivers/pci/hotplug/Kconfig"
679 menu "Executable file formats"
681 source "fs/Kconfig.binfmt"
685 menu "Power management options (EXPERIMENTAL)"
686 depends on EXPERIMENTAL
688 source kernel/power/Kconfig
691 bool "Advanced Power Management Emulation"
697 source "drivers/Kconfig"
701 source "arch/sh/oprofile/Kconfig"
703 source "arch/sh/Kconfig.debug"
705 source "security/Kconfig"
707 source "crypto/Kconfig"