2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux/SuperH Kernel Configuration"
14 select HAVE_GENERIC_DMA_COHERENT
16 The SuperH is a RISC processor targeted for use in embedded systems
17 and consumer electronics; it was also used in the Sega Dreamcast
18 gaming console. The SuperH port has a home page at
19 <http://www.linux-sh.org/>.
24 select HAVE_KRETPROBES
31 default "arch/sh/configs/shx3_defconfig" if SUPERH32
32 default "arch/sh/configs/cayman_defconfig" if SUPERH64
34 config RWSEM_GENERIC_SPINLOCK
37 config RWSEM_XCHGADD_ALGORITHM
42 depends on BUG && SUPERH32
44 config GENERIC_FIND_NEXT_BIT
47 config GENERIC_HWEIGHT
50 config GENERIC_HARDIRQS
53 config GENERIC_HARDIRQS_NO__DO_IRQ
56 config GENERIC_IRQ_PROBE
59 config GENERIC_CALIBRATE_DELAY
68 config GENERIC_CLOCKEVENTS
71 config GENERIC_CLOCKEVENTS_BROADCAST
74 config GENERIC_LOCKBREAK
76 depends on SMP && PREEMPT
78 config SYS_SUPPORTS_PM
81 config SYS_SUPPORTS_APM_EMULATION
83 select SYS_SUPPORTS_PM
85 config SYS_SUPPORTS_SMP
88 config SYS_SUPPORTS_NUMA
91 config SYS_SUPPORTS_PCI
94 config STACKTRACE_SUPPORT
97 config LOCKDEP_SUPPORT
100 config ARCH_HAS_ILOG2_U32
103 config ARCH_HAS_ILOG2_U64
106 config ARCH_NO_VIRT_TO_BUS
112 source "init/Kconfig"
128 select CPU_HAS_INTEVT
133 select CPU_HAS_INTEVT
135 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
136 select CPU_HAS_FPU if !CPU_SH4AL_DSP
158 prompt "Processor sub-type selection"
164 # SH-2 Processor Support
166 config CPU_SUBTYPE_SH7619
167 bool "Support SH7619 processor"
170 # SH-2A Processor Support
172 config CPU_SUBTYPE_SH7203
173 bool "Support SH7203 processor"
177 config CPU_SUBTYPE_SH7206
178 bool "Support SH7206 processor"
181 config CPU_SUBTYPE_SH7263
182 bool "Support SH7263 processor"
186 config CPU_SUBTYPE_MXG
187 bool "Support MX-G processor"
190 Select MX-G if running on an R8A03022BG part.
192 # SH-3 Processor Support
194 config CPU_SUBTYPE_SH7705
195 bool "Support SH7705 processor"
198 config CPU_SUBTYPE_SH7706
199 bool "Support SH7706 processor"
202 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
204 config CPU_SUBTYPE_SH7707
205 bool "Support SH7707 processor"
208 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
210 config CPU_SUBTYPE_SH7708
211 bool "Support SH7708 processor"
214 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
215 if you have a 100 Mhz SH-3 HD6417708R CPU.
217 config CPU_SUBTYPE_SH7709
218 bool "Support SH7709 processor"
221 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
223 config CPU_SUBTYPE_SH7710
224 bool "Support SH7710 processor"
228 Select SH7710 if you have a SH3-DSP SH7710 CPU.
230 config CPU_SUBTYPE_SH7712
231 bool "Support SH7712 processor"
235 Select SH7712 if you have a SH3-DSP SH7712 CPU.
237 config CPU_SUBTYPE_SH7720
238 bool "Support SH7720 processor"
242 Select SH7720 if you have a SH3-DSP SH7720 CPU.
244 config CPU_SUBTYPE_SH7721
245 bool "Support SH7721 processor"
249 Select SH7721 if you have a SH3-DSP SH7721 CPU.
251 # SH-4 Processor Support
253 config CPU_SUBTYPE_SH7750
254 bool "Support SH7750 processor"
257 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
259 config CPU_SUBTYPE_SH7091
260 bool "Support SH7091 processor"
263 Select SH7091 if you have an SH-4 based Sega device (such as
264 the Dreamcast, Naomi, and Naomi 2).
266 config CPU_SUBTYPE_SH7750R
267 bool "Support SH7750R processor"
270 config CPU_SUBTYPE_SH7750S
271 bool "Support SH7750S processor"
274 config CPU_SUBTYPE_SH7751
275 bool "Support SH7751 processor"
278 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
279 or if you have a HD6417751R CPU.
281 config CPU_SUBTYPE_SH7751R
282 bool "Support SH7751R processor"
285 config CPU_SUBTYPE_SH7760
286 bool "Support SH7760 processor"
289 config CPU_SUBTYPE_SH4_202
290 bool "Support SH4-202 processor"
293 # SH-4A Processor Support
295 config CPU_SUBTYPE_SH7723
296 bool "Support SH7723 processor"
299 select ARCH_SPARSEMEM_ENABLE
301 Select SH7723 if you have an SH-MobileR2 CPU.
303 config CPU_SUBTYPE_SH7763
304 bool "Support SH7763 processor"
307 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
309 config CPU_SUBTYPE_SH7770
310 bool "Support SH7770 processor"
313 config CPU_SUBTYPE_SH7780
314 bool "Support SH7780 processor"
317 config CPU_SUBTYPE_SH7785
318 bool "Support SH7785 processor"
321 select ARCH_SPARSEMEM_ENABLE
322 select SYS_SUPPORTS_NUMA
324 config CPU_SUBTYPE_SHX3
325 bool "Support SH-X3 processor"
328 select ARCH_SPARSEMEM_ENABLE
329 select SYS_SUPPORTS_NUMA
330 select SYS_SUPPORTS_SMP
331 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
333 # SH4AL-DSP Processor Support
335 config CPU_SUBTYPE_SH7343
336 bool "Support SH7343 processor"
339 config CPU_SUBTYPE_SH7722
340 bool "Support SH7722 processor"
343 select ARCH_SPARSEMEM_ENABLE
344 select SYS_SUPPORTS_NUMA
346 config CPU_SUBTYPE_SH7366
347 bool "Support SH7366 processor"
350 select ARCH_SPARSEMEM_ENABLE
351 select SYS_SUPPORTS_NUMA
353 # SH-5 Processor Support
355 config CPU_SUBTYPE_SH5_101
356 bool "Support SH5-101 processor"
359 config CPU_SUBTYPE_SH5_103
360 bool "Support SH5-103 processor"
365 source "arch/sh/mm/Kconfig"
367 source "arch/sh/Kconfig.cpu"
369 source "arch/sh/boards/Kconfig"
371 menu "Timer and clock configuration"
375 prompt "TMU timer support"
376 depends on CPU_SH3 || CPU_SH4
378 select GENERIC_CLOCKEVENTS
380 This enables the use of the TMU as the system timer.
384 prompt "CMT timer support"
385 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
387 This enables the use of the CMT as the system timer.
391 prompt "MTU2 timer support"
394 This enables the use of the MTU2 as the system timer.
398 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
400 default "86" if CPU_SUBTYPE_SH7619
401 default "140" if CPU_SUBTYPE_SH7206
402 default "142" if CPU_SUBTYPE_SH7203
403 default "238" if CPU_SUBTYPE_MXG
407 int "Peripheral clock frequency (in Hz)"
408 default "27000000" if CPU_SUBTYPE_SH7343
409 default "31250000" if CPU_SUBTYPE_SH7619
410 default "32000000" if CPU_SUBTYPE_SH7722
411 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
412 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
413 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
414 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
415 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
416 default "66000000" if CPU_SUBTYPE_SH4_202
419 This option is used to specify the peripheral clock frequency.
420 This is necessary for determining the reference clock value on
421 platforms lacking an RTC.
424 int "CPU Mode Pin Setting"
426 default 6 if CPU_SUBTYPE_SH7206
427 default 5 if CPU_SUBTYPE_SH7619
430 MD2 - MD0 pin setting.
432 source "kernel/time/Kconfig"
436 menu "CPU Frequency scaling"
438 source "drivers/cpufreq/Kconfig"
441 tristate "SuperH CPU Frequency driver"
443 select CPU_FREQ_TABLE
445 This adds the cpufreq driver for SuperH. At present, only
446 the SH-4 is supported.
448 For details, take a look at <file:Documentation/cpu-freq>.
454 source "arch/sh/drivers/Kconfig"
461 menu "Kernel features"
463 source kernel/Kconfig.hz
466 bool "kexec system call (EXPERIMENTAL)"
467 depends on SUPERH32 && EXPERIMENTAL
469 kexec is a system call that implements the ability to shutdown your
470 current kernel, and to start another kernel. It is like a reboot
471 but it is independent of the system firmware. And like a reboot
472 you can start any kernel with it, not just Linux.
474 The name comes from the similarity to the exec system call.
476 It is an ongoing process to be certain the hardware in a machine
477 is properly shutdown, so do not be surprised if this code does not
478 initially work for you. It may help to enable device hotplugging
479 support. As of this writing the exact hardware interface is
480 strongly in flux, so no good recommendation can be made.
483 bool "kernel crash dumps (EXPERIMENTAL)"
484 depends on SUPERH32 && EXPERIMENTAL
486 Generate crash dump after being started by kexec.
487 This should be normally only set in special crash dump kernels
488 which are loaded in the main kernel with kexec-tools into
489 a specially reserved region and then later executed after
490 a crash by kdump/kexec. The crash dump kernel must be compiled
491 to a memory address not used by the main kernel using
494 For more details see Documentation/kdump/kdump.txt
497 bool "Enable seccomp to safely compute untrusted bytecode"
500 This kernel feature is useful for number crunching applications
501 that may need to compute untrusted bytecode during their
502 execution. By using pipes or other transports made available to
503 the process as file descriptors supporting the read/write
504 syscalls, it's possible to isolate those applications in
505 their own address space using seccomp. Once seccomp is
506 enabled via prctl, it cannot be disabled and the task is only
507 allowed to execute a few safe syscalls defined by each seccomp
513 bool "Symmetric multi-processing support"
514 depends on SYS_SUPPORTS_SMP
515 select USE_GENERIC_SMP_HELPERS
517 This enables support for systems with more than one CPU. If you have
518 a system with only one CPU, like most personal computers, say N. If
519 you have a system with more than one CPU, say Y.
521 If you say N here, the kernel will run on single and multiprocessor
522 machines, but will use only one CPU of a multiprocessor machine. If
523 you say Y here, the kernel will run on many, but not all,
524 singleprocessor machines. On a singleprocessor machine, the kernel
525 will run faster if you say N here.
527 People using multiprocessor machines who say Y here should also say
528 Y to "Enhanced Real Time Clock Support", below.
530 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
531 available at <http://www.tldp.org/docs.html#howto>.
533 If you don't know what to do here, say N.
536 int "Maximum number of CPUs (2-32)"
539 default "4" if CPU_SHX3
542 This allows you to specify the maximum number of CPUs which this
543 kernel will support. The maximum supported value is 32 and the
544 minimum value which makes sense is 2.
546 This is purely to save memory - each supported CPU adds
547 approximately eight kilobytes to the kernel image.
549 source "kernel/Kconfig.preempt"
553 depends on !SMP && SUPERH32
555 This enables support for gUSA (general UserSpace Atomicity).
556 This is the default implementation for both UP and non-ll/sc
557 CPUs, and is used by the libc, amongst others.
559 For additional information, design information can be found
560 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
562 This should only be disabled for special cases where alternate
563 atomicity implementations exist.
566 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
567 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
569 Enabling this option will allow the kernel to implement some
570 atomic operations using a software implemention of load-locked/
571 store-conditional (LLSC). On machines which do not have hardware
572 LLSC, this should be more efficient than the other alternative of
573 disabling insterrupts around the atomic sequence.
579 config ZERO_PAGE_OFFSET
580 hex "Zero page offset"
581 default "0x00004000" if SH_SH03
582 default "0x00010000" if PAGE_SIZE_64KB
583 default "0x00002000" if PAGE_SIZE_8KB
586 This sets the default offset of zero page.
588 config BOOT_LINK_OFFSET
589 hex "Link address offset for booting"
592 This option allows you to set the link address offset of the zImage.
593 This can be useful if you are on a board which has a small amount of
597 bool "Wakeup UBC on startup"
598 depends on CPU_SH4 && !CPU_SH4A
600 Selecting this option will wakeup the User Break Controller (UBC) on
601 startup. Although the UBC is left in an awake state when the processor
602 comes up, some boot loaders misbehave by putting the UBC to sleep in a
603 power saving state, which causes issues with things like ptrace().
608 bool "Default bootloader kernel arguments"
611 string "Initial kernel command string"
612 depends on CMDLINE_BOOL
613 default "console=ttySC1,115200"
619 # Even on SuperH devices which don't have an ISA bus,
620 # this variable helps the PCMCIA modules handle
621 # IRQ requesting properly -- Greg Banks.
623 # Though we're generally not interested in it when
624 # we're not using PCMCIA, so we make it dependent on
625 # PCMCIA outright. -- PFM.
628 depends on PCMCIA && HD6446X_SERIES
630 Find out whether you have ISA slots on your motherboard. ISA is the
631 name of a bus system, i.e. the way the CPU talks to the other stuff
632 inside your box. Other bus systems are PCI, EISA, MicroChannel
633 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
634 newer boards don't support it. If you have ISA, say Y, otherwise N.
639 The Extended Industry Standard Architecture (EISA) bus was
640 developed as an open alternative to the IBM MicroChannel bus.
642 The EISA bus provided some of the features of the IBM MicroChannel
643 bus while maintaining backward compatibility with cards made for
644 the older ISA bus. The EISA bus saw limited use between 1988 and
645 1995 when it was made obsolete by the PCI bus.
647 Say Y here if you are building a kernel for an EISA-based machine.
654 MicroChannel Architecture is found in some IBM PS/2 machines and
655 laptops. It is a bus system similar to PCI or ISA. See
656 <file:Documentation/mca.txt> (and especially the web page given
657 there) before attempting to build an MCA bus kernel.
663 tristate "SuperHyway Bus support"
664 depends on CPU_SUBTYPE_SH4_202
667 bool "Maple Bus support"
668 depends on SH_DREAMCAST
670 The Maple Bus is SEGA's serial communication bus for peripherals
671 on the Dreamcast. Without this bus support you won't be able to
672 get your Dreamcast keyboard etc to work, so most users
673 probably want to say 'Y' here, unless you are only using the
674 Dreamcast with a serial line terminal or a remote network
678 bool "Compact Flash Enabler support"
679 depends on SOLUTION_ENGINE || SH_SH03
681 Compact Flash is a small, removable mass storage device introduced
682 in 1994 originally as a PCMCIA device. If you say `Y' here, you
683 compile in support for Compact Flash devices directly connected to
684 a SuperH processor. A Compact Flash FAQ is available at
685 <http://www.compactflash.org/faqs/faq.htm>.
687 If your board has "Directly Connected" CompactFlash at area 5 or 6,
688 you may want to enable this option. Then, you can use CF as
689 primary IDE drive (only tested for SanDisk).
691 If in doubt, select 'N'.
694 prompt "Compact Flash Connection Area"
695 depends on CF_ENABLER
701 If your board has "Directly Connected" CompactFlash, You should
702 select the area where your CF is connected to.
704 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
705 - "Area6" if it is connected to Area 6 (0x18000000)
707 "Area6" will work for most boards.
716 depends on CF_ENABLER
717 default "0xb8000000" if CF_AREA6
718 default "0xb4000000" if CF_AREA5
720 source "arch/sh/drivers/pci/Kconfig"
722 source "drivers/pci/Kconfig"
724 source "drivers/pcmcia/Kconfig"
726 source "drivers/pci/hotplug/Kconfig"
730 menu "Executable file formats"
732 source "fs/Kconfig.binfmt"
736 menu "Power management options (EXPERIMENTAL)"
737 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
739 config ARCH_SUSPEND_POSSIBLE
743 source kernel/power/Kconfig
749 source "drivers/Kconfig"
753 source "arch/sh/Kconfig.debug"
755 source "security/Kconfig"
757 source "crypto/Kconfig"