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 configureing for the SHMIN board
225 "Bare CPU" aka "unknown" means an SH-based system which is not one
226 of the specific ones mentioned above, which means you need to enter
227 all sorts of stuff like CONFIG_MEMORY_START because the config
228 system doesn't already know what it is. You get a machine vector
229 without any platform-specific code in it, so things like the RTC may
232 This option is for the early stages of porting to a new machine.
236 source "arch/sh/mm/Kconfig"
239 bool "Fixup fileystem concated to kernel image"
242 Some SH platforms boot a kernel with the root filesystem at the end
243 of the kernel binary (Where the BSS appears) and enabling this option
244 moved the filesystem to the end of the kernel and reserves the memory
248 hex "Physical memory start address"
251 Computers built with Hitachi SuperH processors always
252 map the ROM starting at address zero. But the processor
253 does not specify the range that RAM takes.
255 The physical memory (RAM) start address will be automatically
256 set to 08000000. Other platforms, such as the Solution Engine
257 boards typically map RAM at 0C000000.
259 Tweak this only when porting to a new machine which does not
260 already have a defconfig. Changing it from the known correct
261 value on any of the known systems will only lead to disaster.
264 hex "Physical memory size"
267 This sets the default memory size assumed by your SH kernel. It can
268 be overridden as normal by the 'mem=' argument on the kernel command
269 line. If unsure, consult your board specifications or just leave it
270 as 0x00400000 which was the default value before this became
274 bool "Compact Flash Enabler support"
275 depends on SH_SOLUTION_ENGINE || SH_UNKNOWN || SH_SH03
277 Compact Flash is a small, removable mass storage device introduced
278 in 1994 originally as a PCMCIA device. If you say `Y' here, you
279 compile in support for Compact Flash devices directly connected to
280 a SuperH processor. A Compact Flash FAQ is available at
281 <http://www.compactflash.org/faqs/faq.htm>.
283 If your board has "Directly Connected" CompactFlash at area 5 or 6,
284 you may want to enable this option. Then, you can use CF as
285 primary IDE drive (only tested for SanDisk).
287 If in doubt, select 'N'.
290 prompt "Compact Flash Connection Area"
291 depends on CF_ENABLER
297 If your board has "Directly Connected" CompactFlash, You should
298 select the area where your CF is connected to.
300 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
301 - "Area6" if it is connected to Area 6 (0x18000000)
303 "Area6" will work for most boards.
312 depends on CF_ENABLER
313 default "0xb8000000" if CF_AREA6
314 default "0xb4000000" if CF_AREA5
316 menu "Processor features"
318 config CPU_LITTLE_ENDIAN
321 Some SuperH machines can be configured for either little or big
322 endian byte order. These modes require different kernels. Say Y if
323 your machine is little endian, N if it's a big endian machine.
330 Selecting this option will enable support for SH processors that
331 have FPU units (ie, SH77xx).
333 This option must be set in order to enable the FPU.
336 bool "FPU emulation support"
337 depends on !SH_FPU && EXPERIMENTAL
340 Selecting this option will enable support for software FPU emulation.
341 Most SH-3 users will want to say Y here, whereas most SH-4 users will
346 default y if SH4AL_DSP || !CPU_SH4
349 Selecting this option will enable support for SH processors that
350 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
352 This option must be set in order to enable the DSP.
359 Selecting this option will allow the Linux kernel to use SH3 on-chip
364 config SH_STORE_QUEUES
365 bool "Support for Store Queues"
368 Selecting this option will enable an in-kernel API for manipulating
369 the store queues integrated in the SH-4 processors.
371 config CPU_HAS_INTEVT
374 config CPU_HAS_PINT_IRQ
377 config CPU_HAS_MASKREG_IRQ
380 config CPU_HAS_INTC2_IRQ
385 depends on CPU_SH3 || CPU_SH4
388 This will enable the use of SR.RB register bank usage. Processors
389 that are lacking this bit must have another method in place for
390 accomplishing what is taken care of by the banked registers.
392 See <file:Documentation/sh/register-banks.txt> for further
393 information on SR.RB and register banking in the kernel in general.
398 depends on !GENERIC_TIME
401 bool "TMU timer support"
404 This enables the use of the TMU as the system timer.
408 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
410 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
412 source "arch/sh/boards/renesas/r7780rp/Kconfig"
415 int "Peripheral clock frequency (in Hz)"
416 default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
417 default "60000000" if CPU_SUBTYPE_SH7751
418 default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
419 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705
420 default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
421 default "66000000" if CPU_SUBTYPE_SH4_202
423 This option is used to specify the peripheral clock frequency.
424 This is necessary for determining the reference clock value on
425 platforms lacking an RTC.
427 menu "CPU Frequency scaling"
429 source "drivers/cpufreq/Kconfig"
432 tristate "SuperH CPU Frequency driver"
434 select CPU_FREQ_TABLE
436 This adds the cpufreq driver for SuperH. At present, only
437 the SH-4 is supported.
439 For details, take a look at <file:Documentation/cpu-freq>.
445 source "arch/sh/drivers/dma/Kconfig"
447 source "arch/sh/cchips/Kconfig"
451 depends on SH_MPC1211 || SH_SH03 || \
452 SH_BIGSUR || SOLUTION_ENGINE || \
453 SH_RTS7751R2D || SH_SH4202_MICRODEV || SH_LANDISK
455 Use the power-on LED on your machine as a load meter. The exact
456 behavior is platform-dependent, but normally the flash frequency is
457 a hyperbolic function of the 5-minute load average.
463 depends on SH_MPC1211
466 menu "Kernel features"
468 source kernel/Kconfig.hz
471 bool "kexec system call (EXPERIMENTAL)"
472 depends on EXPERIMENTAL
474 kexec is a system call that implements the ability to shutdown your
475 current kernel, and to start another kernel. It is like a reboot
476 but it is independent of the system firmware. And like a reboot
477 you can start any kernel with it, not just Linux.
479 The name comes from the similarity to the exec system call.
481 It is an ongoing process to be certain the hardware in a machine
482 is properly shutdown, so do not be surprised if this code does not
483 initially work for you. It may help to enable device hotplugging
484 support. As of this writing the exact hardware interface is
485 strongly in flux, so no good recommendation can be made.
488 bool "Symmetric multi-processing support"
490 This enables support for systems with more than one CPU. If you have
491 a system with only one CPU, like most personal computers, say N. If
492 you have a system with more than one CPU, say Y.
494 If you say N here, the kernel will run on single and multiprocessor
495 machines, but will use only one CPU of a multiprocessor machine. If
496 you say Y here, the kernel will run on many, but not all,
497 singleprocessor machines. On a singleprocessor machine, the kernel
498 will run faster if you say N here.
500 People using multiprocessor machines who say Y here should also say
501 Y to "Enhanced Real Time Clock Support", below.
503 See also the <file:Documentation/smp.txt>,
504 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
505 at <http://www.tldp.org/docs.html#howto>.
507 If you don't know what to do here, say N.
510 int "Maximum number of CPUs (2-32)"
515 This allows you to specify the maximum number of CPUs which this
516 kernel will support. The maximum supported value is 32 and the
517 minimum value which makes sense is 2.
519 This is purely to save memory - each supported CPU adds
520 approximately eight kilobytes to the kernel image.
522 source "kernel/Kconfig.preempt"
526 depends on CPU_SH3 || CPU_SH4
529 This will enable the use of SR.RB register bank usage. Processors
530 that are lacking this bit must have another method in place for
531 accomplishing what is taken care of by the banked registers.
533 See <file:Documentation/sh/register-banks.txt> for further
534 information on SR.RB and register banking in the kernel in general.
539 depends on NEED_MULTIPLE_NODES
545 config ZERO_PAGE_OFFSET
546 hex "Zero page offset"
547 default "0x00004000" if SH_MPC1211 || SH_SH03
550 This sets the default offset of zero page.
552 config BOOT_LINK_OFFSET
553 hex "Link address offset for booting"
556 This option allows you to set the link address offset of the zImage.
557 This can be useful if you are on a board which has a small amount of
561 bool "Wakeup UBC on startup"
563 Selecting this option will wakeup the User Break Controller (UBC) on
564 startup. Although the UBC is left in an awake state when the processor
565 comes up, some boot loaders misbehave by putting the UBC to sleep in a
566 power saving state, which causes issues with things like ptrace().
571 bool "Default bootloader kernel arguments"
574 string "Initial kernel command string"
575 depends on CMDLINE_BOOL
576 default "console=ttySC1,115200"
582 # Even on SuperH devices which don't have an ISA bus,
583 # this variable helps the PCMCIA modules handle
584 # IRQ requesting properly -- Greg Banks.
586 # Though we're generally not interested in it when
587 # we're not using PCMCIA, so we make it dependent on
588 # PCMCIA outright. -- PFM.
593 Find out whether you have ISA slots on your motherboard. ISA is the
594 name of a bus system, i.e. the way the CPU talks to the other stuff
595 inside your box. Other bus systems are PCI, EISA, MicroChannel
596 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
597 newer boards don't support it. If you have ISA, say Y, otherwise N.
602 The Extended Industry Standard Architecture (EISA) bus was
603 developed as an open alternative to the IBM MicroChannel bus.
605 The EISA bus provided some of the features of the IBM MicroChannel
606 bus while maintaining backward compatibility with cards made for
607 the older ISA bus. The EISA bus saw limited use between 1988 and
608 1995 when it was made obsolete by the PCI bus.
610 Say Y here if you are building a kernel for an EISA-based machine.
617 MicroChannel Architecture is found in some IBM PS/2 machines and
618 laptops. It is a bus system similar to PCI or ISA. See
619 <file:Documentation/mca.txt> (and especially the web page given
620 there) before attempting to build an MCA bus kernel.
626 tristate "SuperHyway Bus support"
627 depends on CPU_SUBTYPE_SH4_202
629 source "arch/sh/drivers/pci/Kconfig"
631 source "drivers/pci/Kconfig"
633 source "drivers/pcmcia/Kconfig"
635 source "drivers/pci/hotplug/Kconfig"
639 menu "Executable file formats"
641 source "fs/Kconfig.binfmt"
645 menu "Power management options (EXPERIMENTAL)"
646 depends on EXPERIMENTAL
648 source kernel/power/Kconfig
651 bool "Advanced Power Management Emulation"
657 source "drivers/Kconfig"
661 source "arch/sh/oprofile/Kconfig"
663 source "arch/sh/Kconfig.debug"
665 source "security/Kconfig"
667 source "crypto/Kconfig"