2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux/SuperH Kernel Configuration"
12 The SuperH is a RISC processor targeted for use in embedded systems
13 and consumer electronics; it was also used in the Sega Dreamcast
14 gaming console. The SuperH port has a home page at
15 <http://www.linux-sh.org/>.
17 config RWSEM_GENERIC_SPINLOCK
21 config RWSEM_XCHGADD_ALGORITHM
24 config GENERIC_FIND_NEXT_BIT
28 config GENERIC_HWEIGHT
32 config GENERIC_HARDIRQS
36 config GENERIC_IRQ_PROBE
40 config GENERIC_CALIBRATE_DELAY
47 config ARCH_MAY_HAVE_PC_FDC
55 prompt "SuperH system type"
58 config SH_SOLUTION_ENGINE
61 Select SolutionEngine if configuring for a Hitachi SH7709
62 or SH7750 evaluation board.
64 config SH_7751_SOLUTION_ENGINE
65 bool "SolutionEngine7751"
66 select CPU_SUBTYPE_SH7751
68 Select 7751 SolutionEngine if configuring for a Hitachi SH7751
71 config SH_7300_SOLUTION_ENGINE
72 bool "SolutionEngine7300"
73 select CPU_SUBTYPE_SH7300
75 Select 7300 SolutionEngine if configuring for a Hitachi SH7300(SH-Mobile V)
78 config SH_73180_SOLUTION_ENGINE
79 bool "SolutionEngine73180"
80 select CPU_SUBTYPE_SH73180
82 Select 73180 SolutionEngine if configuring for a Hitachi SH73180(SH-Mobile 3)
85 config SH_7751_SYSTEMH
87 select CPU_SUBTYPE_SH7751R
89 Select SystemH if you are configuring for a Renesas SystemH
90 7751R evaluation board.
95 Select HP6XX if configuring for a HP jornada HP6xx.
96 More information (hardware only) at
97 <http://www.hp.com/jornada/>.
102 Select EC3104 if configuring for a system with an Eclipse
103 International EC3104 chip, e.g. the Harris AD2000.
107 select CPU_SUBTYPE_SH7604
109 Select Saturn if configuring for a SEGA Saturn.
113 select CPU_SUBTYPE_SH7091
115 Select Dreamcast if configuring for a SEGA Dreamcast.
117 <http://www.m17n.org/linux-sh/dreamcast/>. There is a
118 Dreamcast project is at <http://linuxdc.sourceforge.net/>.
124 bool "Interface MPC1211"
126 CTP/PCI-SH02 is a CPU module computer that is produced
127 by Interface Corporation.
128 More information at <http://www.interface.co.jp>
131 bool "Interface CTP/PCI-SH03"
133 CTP/PCI-SH03 is a CPU module computer that is produced
134 by Interface Corporation.
135 More information at <http://www.interface.co.jp>
137 config SH_SECUREEDGE5410
138 bool "SecureEdge5410"
139 select CPU_SUBTYPE_SH7751R
141 Select SecureEdge5410 if configuring for a SnapGear SH board.
142 This includes both the OEM SecureEdge products as well as the
145 config SH_HS7751RVOIP
147 select CPU_SUBTYPE_SH7751R
149 Select HS7751RVOIP if configuring for a Renesas Technology
154 select CPU_SUBTYPE_SH7751R
156 Select RTS7751R2D if configuring for a Renesas Technology
157 Sales SH-Graphics board.
161 select CPU_SUBTYPE_SH7780
163 Select R7780RP-1 if configuring for a Renesas Solutions
168 select CPU_SUBTYPE_SH7705
170 config SH_SH4202_MICRODEV
171 bool "SH4-202 MicroDev"
172 select CPU_SUBTYPE_SH4_202
174 Select SH4-202 MicroDev if configuring for a SuperH MicroDev board
179 select CPU_SUBTYPE_SH7751R
181 I-O DATA DEVICE, INC. "LANDISK Series" support.
185 select CPU_SUBTYPE_SH7751R
187 Select Titan if you are configuring for a Nimble Microsystems
192 select CPU_SUBTYPE_SH7706
194 Select SHMIN if configureing for the SHMIN board
199 "Bare CPU" aka "unknown" means an SH-based system which is not one
200 of the specific ones mentioned above, which means you need to enter
201 all sorts of stuff like CONFIG_MEMORY_START because the config
202 system doesn't already know what it is. You get a machine vector
203 without any platform-specific code in it, so things like the RTC may
206 This option is for the early stages of porting to a new machine.
210 source "arch/sh/mm/Kconfig"
213 bool "Compact Flash Enabler support"
214 depends on SH_SOLUTION_ENGINE || SH_UNKNOWN || SH_SH03
216 Compact Flash is a small, removable mass storage device introduced
217 in 1994 originally as a PCMCIA device. If you say `Y' here, you
218 compile in support for Compact Flash devices directly connected to
219 a SuperH processor. A Compact Flash FAQ is available at
220 <http://www.compactflash.org/faqs/faq.htm>.
222 If your board has "Directly Connected" CompactFlash at area 5 or 6,
223 you may want to enable this option. Then, you can use CF as
224 primary IDE drive (only tested for SanDisk).
226 If in doubt, select 'N'.
229 prompt "Compact Flash Connection Area"
230 depends on CF_ENABLER
236 If your board has "Directly Connected" CompactFlash, You should
237 select the area where your CF is connected to.
239 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
240 - "Area6" if it is connected to Area 6 (0x18000000)
242 "Area6" will work for most boards.
251 depends on CF_ENABLER
252 default "0xb8000000" if CF_AREA6
253 default "0xb4000000" if CF_AREA5
255 menu "Processor features"
257 config CPU_LITTLE_ENDIAN
260 Some SuperH machines can be configured for either little or big
261 endian byte order. These modes require different kernels. Say Y if
262 your machine is little endian, N if it's a big endian machine.
269 Selecting this option will enable support for SH processors that
270 have FPU units (ie, SH77xx).
272 This option must be set in order to enable the FPU.
275 bool "FPU emulation support"
276 depends on !SH_FPU && EXPERIMENTAL
279 Selecting this option will enable support for software FPU emulation.
280 Most SH-3 users will want to say Y here, whereas most SH-4 users will
285 default y if SH4AL_DSP || !CPU_SH4
288 Selecting this option will enable support for SH processors that
289 have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).
291 This option must be set in order to enable the DSP.
298 Selecting this option will allow the Linux kernel to use SH3 on-chip
303 config SH_STORE_QUEUES
304 bool "Support for Store Queues"
307 Selecting this option will enable an in-kernel API for manipulating
308 the store queues integrated in the SH-4 processors.
310 config CPU_HAS_INTEVT
313 config CPU_HAS_PINT_IRQ
316 config CPU_HAS_MASKREG_IRQ
319 config CPU_HAS_INTC2_IRQ
324 depends on CPU_SH3 || CPU_SH4
327 This will enable the use of SR.RB register bank usage. Processors
328 that are lacking this bit must have another method in place for
329 accomplishing what is taken care of by the banked registers.
331 See <file:Documentation/sh/register-banks.txt> for further
332 information on SR.RB and register banking in the kernel in general.
339 bool "TMU timer support"
342 This enables the use of the TMU as the system timer.
346 source "arch/sh/boards/renesas/hs7751rvoip/Kconfig"
348 source "arch/sh/boards/renesas/rts7751r2d/Kconfig"
350 source "arch/sh/boards/renesas/r7780rp/Kconfig"
353 int "Peripheral clock frequency (in Hz)"
354 default "50000000" if CPU_SUBTYPE_SH7750 || CPU_SUBTYPE_SH7780
355 default "60000000" if CPU_SUBTYPE_SH7751
356 default "33333333" if CPU_SUBTYPE_SH7300 || CPU_SUBTYPE_SH7770 || \
358 default "27000000" if CPU_SUBTYPE_SH73180 || CPU_SUBTYPE_SH7343
359 default "66000000" if CPU_SUBTYPE_SH4_202
361 This option is used to specify the peripheral clock frequency.
362 This is necessary for determining the reference clock value on
363 platforms lacking an RTC.
365 menu "CPU Frequency scaling"
367 source "drivers/cpufreq/Kconfig"
370 tristate "SuperH CPU Frequency driver"
372 select CPU_FREQ_TABLE
374 This adds the cpufreq driver for SuperH. At present, only
375 the SH-4 is supported.
377 For details, take a look at <file:Documentation/cpu-freq>.
383 source "arch/sh/drivers/dma/Kconfig"
385 source "arch/sh/cchips/Kconfig"
389 depends on SH_MPC1211 || SH_SH03 || \
391 SH_7751_SOLUTION_ENGINE || SH_7300_SOLUTION_ENGINE || \
392 SH_73180_SOLUTION_ENGINE || SH_SOLUTION_ENGINE || \
393 SH_RTS7751R2D || SH_SH4202_MICRODEV || SH_LANDISK
395 Use the power-on LED on your machine as a load meter. The exact
396 behavior is platform-dependent, but normally the flash frequency is
397 a hyperbolic function of the 5-minute load average.
403 depends on SH_MPC1211
406 menu "Kernel features"
409 bool "kexec system call (EXPERIMENTAL)"
410 depends on EXPERIMENTAL
412 kexec is a system call that implements the ability to shutdown your
413 current kernel, and to start another kernel. It is like a reboot
414 but it is independent of the system firmware. And like a reboot
415 you can start any kernel with it, not just Linux.
417 The name comes from the similarity to the exec system call.
419 It is an ongoing process to be certain the hardware in a machine
420 is properly shutdown, so do not be surprised if this code does not
421 initially work for you. It may help to enable device hotplugging
422 support. As of this writing the exact hardware interface is
423 strongly in flux, so no good recommendation can be made.
426 bool "Preemptible Kernel (EXPERIMENTAL)"
427 depends on EXPERIMENTAL
430 bool "Symmetric multi-processing support"
432 This enables support for systems with more than one CPU. If you have
433 a system with only one CPU, like most personal computers, say N. If
434 you have a system with more than one CPU, say Y.
436 If you say N here, the kernel will run on single and multiprocessor
437 machines, but will use only one CPU of a multiprocessor machine. If
438 you say Y here, the kernel will run on many, but not all,
439 singleprocessor machines. On a singleprocessor machine, the kernel
440 will run faster if you say N here.
442 People using multiprocessor machines who say Y here should also say
443 Y to "Enhanced Real Time Clock Support", below.
445 See also the <file:Documentation/smp.txt>,
446 <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO available
447 at <http://www.tldp.org/docs.html#howto>.
449 If you don't know what to do here, say N.
452 int "Maximum number of CPUs (2-32)"
457 This allows you to specify the maximum number of CPUs which this
458 kernel will support. The maximum supported value is 32 and the
459 minimum value which makes sense is 2.
461 This is purely to save memory - each supported CPU adds
462 approximately eight kilobytes to the kernel image.
466 depends on CPU_SH3 || CPU_SH4
469 This will enable the use of SR.RB register bank usage. Processors
470 that are lacking this bit must have another method in place for
471 accomplishing what is taken care of by the banked registers.
473 See <file:Documentation/sh/register-banks.txt> for further
474 information on SR.RB and register banking in the kernel in general.
479 depends on NEED_MULTIPLE_NODES
485 config ZERO_PAGE_OFFSET
486 hex "Zero page offset"
487 default "0x00004000" if SH_MPC1211 || SH_SH03
490 This sets the default offset of zero page.
492 config BOOT_LINK_OFFSET
493 hex "Link address offset for booting"
496 This option allows you to set the link address offset of the zImage.
497 This can be useful if you are on a board which has a small amount of
501 bool "Wakeup UBC on startup"
503 Selecting this option will wakeup the User Break Controller (UBC) on
504 startup. Although the UBC is left in an awake state when the processor
505 comes up, some boot loaders misbehave by putting the UBC to sleep in a
506 power saving state, which causes issues with things like ptrace().
511 bool "Default bootloader kernel arguments"
514 string "Initial kernel command string"
515 depends on CMDLINE_BOOL
516 default "console=ttySC1,115200"
522 # Even on SuperH devices which don't have an ISA bus,
523 # this variable helps the PCMCIA modules handle
524 # IRQ requesting properly -- Greg Banks.
526 # Though we're generally not interested in it when
527 # we're not using PCMCIA, so we make it dependent on
528 # PCMCIA outright. -- PFM.
533 Find out whether you have ISA slots on your motherboard. ISA is the
534 name of a bus system, i.e. the way the CPU talks to the other stuff
535 inside your box. Other bus systems are PCI, EISA, MicroChannel
536 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
537 newer boards don't support it. If you have ISA, say Y, otherwise N.
542 The Extended Industry Standard Architecture (EISA) bus was
543 developed as an open alternative to the IBM MicroChannel bus.
545 The EISA bus provided some of the features of the IBM MicroChannel
546 bus while maintaining backward compatibility with cards made for
547 the older ISA bus. The EISA bus saw limited use between 1988 and
548 1995 when it was made obsolete by the PCI bus.
550 Say Y here if you are building a kernel for an EISA-based machine.
557 MicroChannel Architecture is found in some IBM PS/2 machines and
558 laptops. It is a bus system similar to PCI or ISA. See
559 <file:Documentation/mca.txt> (and especially the web page given
560 there) before attempting to build an MCA bus kernel.
566 tristate "SuperHyway Bus support"
567 depends on CPU_SUBTYPE_SH4_202
569 source "arch/sh/drivers/pci/Kconfig"
571 source "drivers/pci/Kconfig"
573 source "drivers/pcmcia/Kconfig"
575 source "drivers/pci/hotplug/Kconfig"
579 menu "Executable file formats"
581 source "fs/Kconfig.binfmt"
585 menu "Power management options (EXPERIMENTAL)"
586 depends on EXPERIMENTAL
588 source kernel/power/Kconfig
591 bool "Advanced Power Management Emulation"
597 source "drivers/Kconfig"
601 source "arch/sh/oprofile/Kconfig"
603 source "arch/sh/Kconfig.debug"
605 source "security/Kconfig"
607 source "crypto/Kconfig"