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/>.
29 default "arch/sh/configs/shx3_defconfig" if SUPERH32
30 default "arch/sh/configs/cayman_defconfig" if SUPERH64
32 config RWSEM_GENERIC_SPINLOCK
35 config RWSEM_XCHGADD_ALGORITHM
40 depends on BUG && SUPERH32
42 config GENERIC_FIND_NEXT_BIT
45 config GENERIC_HWEIGHT
48 config GENERIC_HARDIRQS
51 config GENERIC_HARDIRQS_NO__DO_IRQ
54 config GENERIC_IRQ_PROBE
57 config GENERIC_CALIBRATE_DELAY
66 config GENERIC_CLOCKEVENTS
69 config GENERIC_LOCKBREAK
71 depends on SMP && PREEMPT
73 config SYS_SUPPORTS_PM
76 config SYS_SUPPORTS_APM_EMULATION
78 select SYS_SUPPORTS_PM
80 config SYS_SUPPORTS_SMP
83 config SYS_SUPPORTS_NUMA
86 config SYS_SUPPORTS_PCI
89 config STACKTRACE_SUPPORT
92 config LOCKDEP_SUPPORT
95 config ARCH_HAS_ILOG2_U32
98 config ARCH_HAS_ILOG2_U64
101 config ARCH_NO_VIRT_TO_BUS
107 source "init/Kconfig"
123 select CPU_HAS_INTEVT
128 select CPU_HAS_INTEVT
130 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
131 select CPU_HAS_FPU if !CPU_SH4AL_DSP
153 prompt "Processor sub-type selection"
159 # SH-2 Processor Support
161 config CPU_SUBTYPE_SH7619
162 bool "Support SH7619 processor"
165 # SH-2A Processor Support
167 config CPU_SUBTYPE_SH7203
168 bool "Support SH7203 processor"
172 config CPU_SUBTYPE_SH7206
173 bool "Support SH7206 processor"
176 config CPU_SUBTYPE_SH7263
177 bool "Support SH7263 processor"
181 config CPU_SUBTYPE_MXG
182 bool "Support MX-G processor"
185 Select MX-G if running on an R8A03022BG part.
187 # SH-3 Processor Support
189 config CPU_SUBTYPE_SH7705
190 bool "Support SH7705 processor"
193 config CPU_SUBTYPE_SH7706
194 bool "Support SH7706 processor"
197 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
199 config CPU_SUBTYPE_SH7707
200 bool "Support SH7707 processor"
203 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
205 config CPU_SUBTYPE_SH7708
206 bool "Support SH7708 processor"
209 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
210 if you have a 100 Mhz SH-3 HD6417708R CPU.
212 config CPU_SUBTYPE_SH7709
213 bool "Support SH7709 processor"
216 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
218 config CPU_SUBTYPE_SH7710
219 bool "Support SH7710 processor"
223 Select SH7710 if you have a SH3-DSP SH7710 CPU.
225 config CPU_SUBTYPE_SH7712
226 bool "Support SH7712 processor"
230 Select SH7712 if you have a SH3-DSP SH7712 CPU.
232 config CPU_SUBTYPE_SH7720
233 bool "Support SH7720 processor"
237 Select SH7720 if you have a SH3-DSP SH7720 CPU.
239 config CPU_SUBTYPE_SH7721
240 bool "Support SH7721 processor"
244 Select SH7721 if you have a SH3-DSP SH7721 CPU.
246 # SH-4 Processor Support
248 config CPU_SUBTYPE_SH7750
249 bool "Support SH7750 processor"
252 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
254 config CPU_SUBTYPE_SH7091
255 bool "Support SH7091 processor"
258 Select SH7091 if you have an SH-4 based Sega device (such as
259 the Dreamcast, Naomi, and Naomi 2).
261 config CPU_SUBTYPE_SH7750R
262 bool "Support SH7750R processor"
265 config CPU_SUBTYPE_SH7750S
266 bool "Support SH7750S processor"
269 config CPU_SUBTYPE_SH7751
270 bool "Support SH7751 processor"
273 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
274 or if you have a HD6417751R CPU.
276 config CPU_SUBTYPE_SH7751R
277 bool "Support SH7751R processor"
280 config CPU_SUBTYPE_SH7760
281 bool "Support SH7760 processor"
284 config CPU_SUBTYPE_SH4_202
285 bool "Support SH4-202 processor"
288 # SH-4A Processor Support
290 config CPU_SUBTYPE_SH7723
291 bool "Support SH7723 processor"
294 select ARCH_SPARSEMEM_ENABLE
296 Select SH7723 if you have an SH-MobileR2 CPU.
298 config CPU_SUBTYPE_SH7763
299 bool "Support SH7763 processor"
302 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
304 config CPU_SUBTYPE_SH7770
305 bool "Support SH7770 processor"
308 config CPU_SUBTYPE_SH7780
309 bool "Support SH7780 processor"
312 config CPU_SUBTYPE_SH7785
313 bool "Support SH7785 processor"
316 select ARCH_SPARSEMEM_ENABLE
317 select SYS_SUPPORTS_NUMA
319 config CPU_SUBTYPE_SHX3
320 bool "Support SH-X3 processor"
323 select ARCH_SPARSEMEM_ENABLE
324 select SYS_SUPPORTS_NUMA
325 select SYS_SUPPORTS_SMP
327 # SH4AL-DSP Processor Support
329 config CPU_SUBTYPE_SH7343
330 bool "Support SH7343 processor"
333 config CPU_SUBTYPE_SH7722
334 bool "Support SH7722 processor"
337 select ARCH_SPARSEMEM_ENABLE
338 select SYS_SUPPORTS_NUMA
340 config CPU_SUBTYPE_SH7366
341 bool "Support SH7366 processor"
344 select ARCH_SPARSEMEM_ENABLE
345 select SYS_SUPPORTS_NUMA
347 # SH-5 Processor Support
349 config CPU_SUBTYPE_SH5_101
350 bool "Support SH5-101 processor"
353 config CPU_SUBTYPE_SH5_103
354 bool "Support SH5-103 processor"
359 source "arch/sh/mm/Kconfig"
361 source "arch/sh/Kconfig.cpu"
363 source "arch/sh/boards/Kconfig"
365 menu "Timer and clock configuration"
369 prompt "TMU timer support"
370 depends on CPU_SH3 || CPU_SH4
372 select GENERIC_CLOCKEVENTS
374 This enables the use of the TMU as the system timer.
378 prompt "CMT timer support"
379 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
381 This enables the use of the CMT as the system timer.
385 prompt "MTU2 timer support"
388 This enables the use of the MTU2 as the system timer.
392 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
394 default "86" if CPU_SUBTYPE_SH7619
395 default "140" if CPU_SUBTYPE_SH7206
396 default "142" if CPU_SUBTYPE_SH7203
397 default "238" if CPU_SUBTYPE_MXG
401 int "Peripheral clock frequency (in Hz)"
402 default "27000000" if CPU_SUBTYPE_SH7343
403 default "31250000" if CPU_SUBTYPE_SH7619
404 default "32000000" if CPU_SUBTYPE_SH7722
405 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
406 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
407 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
408 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
409 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
410 default "66000000" if CPU_SUBTYPE_SH4_202
413 This option is used to specify the peripheral clock frequency.
414 This is necessary for determining the reference clock value on
415 platforms lacking an RTC.
418 int "CPU Mode Pin Setting"
420 default 6 if CPU_SUBTYPE_SH7206
421 default 5 if CPU_SUBTYPE_SH7619
424 MD2 - MD0 pin setting.
426 source "kernel/time/Kconfig"
430 menu "CPU Frequency scaling"
432 source "drivers/cpufreq/Kconfig"
435 tristate "SuperH CPU Frequency driver"
437 select CPU_FREQ_TABLE
439 This adds the cpufreq driver for SuperH. At present, only
440 the SH-4 is supported.
442 For details, take a look at <file:Documentation/cpu-freq>.
448 source "arch/sh/drivers/Kconfig"
455 menu "Kernel features"
457 source kernel/Kconfig.hz
460 bool "kexec system call (EXPERIMENTAL)"
461 depends on SUPERH32 && EXPERIMENTAL
463 kexec is a system call that implements the ability to shutdown your
464 current kernel, and to start another kernel. It is like a reboot
465 but it is independent of the system firmware. And like a reboot
466 you can start any kernel with it, not just Linux.
468 The name comes from the similarity to the exec system call.
470 It is an ongoing process to be certain the hardware in a machine
471 is properly shutdown, so do not be surprised if this code does not
472 initially work for you. It may help to enable device hotplugging
473 support. As of this writing the exact hardware interface is
474 strongly in flux, so no good recommendation can be made.
477 bool "kernel crash dumps (EXPERIMENTAL)"
478 depends on SUPERH32 && EXPERIMENTAL
480 Generate crash dump after being started by kexec.
481 This should be normally only set in special crash dump kernels
482 which are loaded in the main kernel with kexec-tools into
483 a specially reserved region and then later executed after
484 a crash by kdump/kexec. The crash dump kernel must be compiled
485 to a memory address not used by the main kernel using
488 For more details see Documentation/kdump/kdump.txt
491 bool "Enable seccomp to safely compute untrusted bytecode"
495 This kernel feature is useful for number crunching applications
496 that may need to compute untrusted bytecode during their
497 execution. By using pipes or other transports made available to
498 the process as file descriptors supporting the read/write
499 syscalls, it's possible to isolate those applications in
500 their own address space using seccomp. Once seccomp is
501 enabled via prctl, it cannot be disabled and the task is only
502 allowed to execute a few safe syscalls defined by each seccomp
508 bool "Symmetric multi-processing support"
509 depends on SYS_SUPPORTS_SMP
510 select USE_GENERIC_SMP_HELPERS
512 This enables support for systems with more than one CPU. If you have
513 a system with only one CPU, like most personal computers, say N. If
514 you have a system with more than one CPU, say Y.
516 If you say N here, the kernel will run on single and multiprocessor
517 machines, but will use only one CPU of a multiprocessor machine. If
518 you say Y here, the kernel will run on many, but not all,
519 singleprocessor machines. On a singleprocessor machine, the kernel
520 will run faster if you say N here.
522 People using multiprocessor machines who say Y here should also say
523 Y to "Enhanced Real Time Clock Support", below.
525 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
526 available at <http://www.tldp.org/docs.html#howto>.
528 If you don't know what to do here, say N.
531 int "Maximum number of CPUs (2-32)"
534 default "4" if CPU_SHX3
537 This allows you to specify the maximum number of CPUs which this
538 kernel will support. The maximum supported value is 32 and the
539 minimum value which makes sense is 2.
541 This is purely to save memory - each supported CPU adds
542 approximately eight kilobytes to the kernel image.
544 source "kernel/Kconfig.preempt"
548 depends on !SMP && SUPERH32
550 This enables support for gUSA (general UserSpace Atomicity).
551 This is the default implementation for both UP and non-ll/sc
552 CPUs, and is used by the libc, amongst others.
554 For additional information, design information can be found
555 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
557 This should only be disabled for special cases where alternate
558 atomicity implementations exist.
561 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
562 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
564 Enabling this option will allow the kernel to implement some
565 atomic operations using a software implemention of load-locked/
566 store-conditional (LLSC). On machines which do not have hardware
567 LLSC, this should be more efficient than the other alternative of
568 disabling insterrupts around the atomic sequence.
574 config ZERO_PAGE_OFFSET
575 hex "Zero page offset"
576 default "0x00004000" if SH_SH03
577 default "0x00010000" if PAGE_SIZE_64KB
578 default "0x00002000" if PAGE_SIZE_8KB
581 This sets the default offset of zero page.
583 config BOOT_LINK_OFFSET
584 hex "Link address offset for booting"
587 This option allows you to set the link address offset of the zImage.
588 This can be useful if you are on a board which has a small amount of
592 bool "Wakeup UBC on startup"
593 depends on CPU_SH4 && !CPU_SH4A
595 Selecting this option will wakeup the User Break Controller (UBC) on
596 startup. Although the UBC is left in an awake state when the processor
597 comes up, some boot loaders misbehave by putting the UBC to sleep in a
598 power saving state, which causes issues with things like ptrace().
603 bool "Default bootloader kernel arguments"
606 string "Initial kernel command string"
607 depends on CMDLINE_BOOL
608 default "console=ttySC1,115200"
614 # Even on SuperH devices which don't have an ISA bus,
615 # this variable helps the PCMCIA modules handle
616 # IRQ requesting properly -- Greg Banks.
618 # Though we're generally not interested in it when
619 # we're not using PCMCIA, so we make it dependent on
620 # PCMCIA outright. -- PFM.
623 depends on PCMCIA && HD6446X_SERIES
625 Find out whether you have ISA slots on your motherboard. ISA is the
626 name of a bus system, i.e. the way the CPU talks to the other stuff
627 inside your box. Other bus systems are PCI, EISA, MicroChannel
628 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
629 newer boards don't support it. If you have ISA, say Y, otherwise N.
634 The Extended Industry Standard Architecture (EISA) bus was
635 developed as an open alternative to the IBM MicroChannel bus.
637 The EISA bus provided some of the features of the IBM MicroChannel
638 bus while maintaining backward compatibility with cards made for
639 the older ISA bus. The EISA bus saw limited use between 1988 and
640 1995 when it was made obsolete by the PCI bus.
642 Say Y here if you are building a kernel for an EISA-based machine.
649 MicroChannel Architecture is found in some IBM PS/2 machines and
650 laptops. It is a bus system similar to PCI or ISA. See
651 <file:Documentation/mca.txt> (and especially the web page given
652 there) before attempting to build an MCA bus kernel.
658 tristate "SuperHyway Bus support"
659 depends on CPU_SUBTYPE_SH4_202
662 bool "Maple Bus support"
663 depends on SH_DREAMCAST
665 The Maple Bus is SEGA's serial communication bus for peripherals
666 on the Dreamcast. Without this bus support you won't be able to
667 get your Dreamcast keyboard etc to work, so most users
668 probably want to say 'Y' here, unless you are only using the
669 Dreamcast with a serial line terminal or a remote network
673 bool "Compact Flash Enabler support"
674 depends on SOLUTION_ENGINE || SH_SH03
676 Compact Flash is a small, removable mass storage device introduced
677 in 1994 originally as a PCMCIA device. If you say `Y' here, you
678 compile in support for Compact Flash devices directly connected to
679 a SuperH processor. A Compact Flash FAQ is available at
680 <http://www.compactflash.org/faqs/faq.htm>.
682 If your board has "Directly Connected" CompactFlash at area 5 or 6,
683 you may want to enable this option. Then, you can use CF as
684 primary IDE drive (only tested for SanDisk).
686 If in doubt, select 'N'.
689 prompt "Compact Flash Connection Area"
690 depends on CF_ENABLER
696 If your board has "Directly Connected" CompactFlash, You should
697 select the area where your CF is connected to.
699 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
700 - "Area6" if it is connected to Area 6 (0x18000000)
702 "Area6" will work for most boards.
711 depends on CF_ENABLER
712 default "0xb8000000" if CF_AREA6
713 default "0xb4000000" if CF_AREA5
715 source "arch/sh/drivers/pci/Kconfig"
717 source "drivers/pci/Kconfig"
719 source "drivers/pcmcia/Kconfig"
721 source "drivers/pci/hotplug/Kconfig"
725 menu "Executable file formats"
727 source "fs/Kconfig.binfmt"
731 menu "Power management options (EXPERIMENTAL)"
732 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
734 config ARCH_SUSPEND_POSSIBLE
738 source kernel/power/Kconfig
744 source "drivers/Kconfig"
748 source "arch/sh/Kconfig.debug"
750 source "security/Kconfig"
752 source "crypto/Kconfig"