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
15 select HAVE_IOREMAP_PROT if MMU
17 The SuperH is a RISC processor targeted for use in embedded systems
18 and consumer electronics; it was also used in the Sega Dreamcast
19 gaming console. The SuperH port has a home page at
20 <http://www.linux-sh.org/>.
25 select HAVE_KRETPROBES
26 select HAVE_ARCH_TRACEHOOK
34 default "arch/sh/configs/shx3_defconfig" if SUPERH32
35 default "arch/sh/configs/cayman_defconfig" if SUPERH64
37 config RWSEM_GENERIC_SPINLOCK
40 config RWSEM_XCHGADD_ALGORITHM
45 depends on BUG && SUPERH32
47 config GENERIC_FIND_NEXT_BIT
50 config GENERIC_HWEIGHT
53 config GENERIC_HARDIRQS
56 config GENERIC_HARDIRQS_NO__DO_IRQ
59 config GENERIC_IRQ_PROBE
65 config GENERIC_CALIBRATE_DELAY
74 config GENERIC_CLOCKEVENTS
77 config GENERIC_CLOCKEVENTS_BROADCAST
80 config GENERIC_LOCKBREAK
82 depends on SMP && PREEMPT
84 config SYS_SUPPORTS_PM
87 config SYS_SUPPORTS_APM_EMULATION
89 select SYS_SUPPORTS_PM
91 config SYS_SUPPORTS_SMP
94 config SYS_SUPPORTS_NUMA
97 config SYS_SUPPORTS_PCI
100 config STACKTRACE_SUPPORT
103 config LOCKDEP_SUPPORT
106 config HAVE_LATENCYTOP_SUPPORT
110 config ARCH_HAS_ILOG2_U32
113 config ARCH_HAS_ILOG2_U64
116 config ARCH_NO_VIRT_TO_BUS
122 source "init/Kconfig"
138 select CPU_HAS_INTEVT
143 select CPU_HAS_INTEVT
145 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
146 select CPU_HAS_FPU if !CPU_SH4AL_DSP
168 prompt "Processor sub-type selection"
174 # SH-2 Processor Support
176 config CPU_SUBTYPE_SH7619
177 bool "Support SH7619 processor"
180 # SH-2A Processor Support
182 config CPU_SUBTYPE_SH7203
183 bool "Support SH7203 processor"
187 config CPU_SUBTYPE_SH7206
188 bool "Support SH7206 processor"
191 config CPU_SUBTYPE_SH7263
192 bool "Support SH7263 processor"
196 config CPU_SUBTYPE_MXG
197 bool "Support MX-G processor"
200 Select MX-G if running on an R8A03022BG part.
202 # SH-3 Processor Support
204 config CPU_SUBTYPE_SH7705
205 bool "Support SH7705 processor"
208 config CPU_SUBTYPE_SH7706
209 bool "Support SH7706 processor"
212 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
214 config CPU_SUBTYPE_SH7707
215 bool "Support SH7707 processor"
218 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
220 config CPU_SUBTYPE_SH7708
221 bool "Support SH7708 processor"
224 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
225 if you have a 100 Mhz SH-3 HD6417708R CPU.
227 config CPU_SUBTYPE_SH7709
228 bool "Support SH7709 processor"
231 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
233 config CPU_SUBTYPE_SH7710
234 bool "Support SH7710 processor"
238 Select SH7710 if you have a SH3-DSP SH7710 CPU.
240 config CPU_SUBTYPE_SH7712
241 bool "Support SH7712 processor"
245 Select SH7712 if you have a SH3-DSP SH7712 CPU.
247 config CPU_SUBTYPE_SH7720
248 bool "Support SH7720 processor"
252 Select SH7720 if you have a SH3-DSP SH7720 CPU.
254 config CPU_SUBTYPE_SH7721
255 bool "Support SH7721 processor"
259 Select SH7721 if you have a SH3-DSP SH7721 CPU.
261 # SH-4 Processor Support
263 config CPU_SUBTYPE_SH7750
264 bool "Support SH7750 processor"
267 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
269 config CPU_SUBTYPE_SH7091
270 bool "Support SH7091 processor"
273 Select SH7091 if you have an SH-4 based Sega device (such as
274 the Dreamcast, Naomi, and Naomi 2).
276 config CPU_SUBTYPE_SH7750R
277 bool "Support SH7750R processor"
280 config CPU_SUBTYPE_SH7750S
281 bool "Support SH7750S processor"
284 config CPU_SUBTYPE_SH7751
285 bool "Support SH7751 processor"
288 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
289 or if you have a HD6417751R CPU.
291 config CPU_SUBTYPE_SH7751R
292 bool "Support SH7751R processor"
295 config CPU_SUBTYPE_SH7760
296 bool "Support SH7760 processor"
299 config CPU_SUBTYPE_SH4_202
300 bool "Support SH4-202 processor"
303 # SH-4A Processor Support
305 config CPU_SUBTYPE_SH7723
306 bool "Support SH7723 processor"
309 select ARCH_SPARSEMEM_ENABLE
311 Select SH7723 if you have an SH-MobileR2 CPU.
313 config CPU_SUBTYPE_SH7763
314 bool "Support SH7763 processor"
317 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
319 config CPU_SUBTYPE_SH7770
320 bool "Support SH7770 processor"
323 config CPU_SUBTYPE_SH7780
324 bool "Support SH7780 processor"
327 config CPU_SUBTYPE_SH7785
328 bool "Support SH7785 processor"
331 select ARCH_SPARSEMEM_ENABLE
332 select SYS_SUPPORTS_NUMA
334 config CPU_SUBTYPE_SHX3
335 bool "Support SH-X3 processor"
338 select ARCH_SPARSEMEM_ENABLE
339 select SYS_SUPPORTS_NUMA
340 select SYS_SUPPORTS_SMP
341 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
343 # SH4AL-DSP Processor Support
345 config CPU_SUBTYPE_SH7343
346 bool "Support SH7343 processor"
349 config CPU_SUBTYPE_SH7722
350 bool "Support SH7722 processor"
353 select ARCH_SPARSEMEM_ENABLE
354 select SYS_SUPPORTS_NUMA
356 config CPU_SUBTYPE_SH7366
357 bool "Support SH7366 processor"
360 select ARCH_SPARSEMEM_ENABLE
361 select SYS_SUPPORTS_NUMA
363 # SH-5 Processor Support
365 config CPU_SUBTYPE_SH5_101
366 bool "Support SH5-101 processor"
369 config CPU_SUBTYPE_SH5_103
370 bool "Support SH5-103 processor"
375 source "arch/sh/mm/Kconfig"
377 source "arch/sh/Kconfig.cpu"
379 source "arch/sh/boards/Kconfig"
381 menu "Timer and clock configuration"
385 prompt "TMU timer support"
386 depends on CPU_SH3 || CPU_SH4
388 select GENERIC_CLOCKEVENTS
390 This enables the use of the TMU as the system timer.
394 prompt "CMT timer support"
395 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
397 This enables the use of the CMT as the system timer.
401 prompt "MTU2 timer support"
404 This enables the use of the MTU2 as the system timer.
408 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
410 default "86" if CPU_SUBTYPE_SH7619
411 default "140" if CPU_SUBTYPE_SH7206
412 default "142" if CPU_SUBTYPE_SH7203
413 default "238" if CPU_SUBTYPE_MXG
417 int "Peripheral clock frequency (in Hz)"
418 default "27000000" if CPU_SUBTYPE_SH7343
419 default "31250000" if CPU_SUBTYPE_SH7619
420 default "32000000" if CPU_SUBTYPE_SH7722
421 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
422 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
423 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
424 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
425 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
426 default "66000000" if CPU_SUBTYPE_SH4_202
429 This option is used to specify the peripheral clock frequency.
430 This is necessary for determining the reference clock value on
431 platforms lacking an RTC.
434 int "CPU Mode Pin Setting"
436 default 6 if CPU_SUBTYPE_SH7206
437 default 5 if CPU_SUBTYPE_SH7619
440 MD2 - MD0 pin setting.
442 source "kernel/time/Kconfig"
446 menu "CPU Frequency scaling"
448 source "drivers/cpufreq/Kconfig"
451 tristate "SuperH CPU Frequency driver"
453 select CPU_FREQ_TABLE
455 This adds the cpufreq driver for SuperH. At present, only
456 the SH-4 is supported.
458 For details, take a look at <file:Documentation/cpu-freq>.
464 source "arch/sh/drivers/Kconfig"
471 menu "Kernel features"
473 source kernel/Kconfig.hz
476 bool "kexec system call (EXPERIMENTAL)"
477 depends on SUPERH32 && EXPERIMENTAL
479 kexec is a system call that implements the ability to shutdown your
480 current kernel, and to start another kernel. It is like a reboot
481 but it is independent of the system firmware. And like a reboot
482 you can start any kernel with it, not just Linux.
484 The name comes from the similarity to the exec system call.
486 It is an ongoing process to be certain the hardware in a machine
487 is properly shutdown, so do not be surprised if this code does not
488 initially work for you. It may help to enable device hotplugging
489 support. As of this writing the exact hardware interface is
490 strongly in flux, so no good recommendation can be made.
493 bool "kernel crash dumps (EXPERIMENTAL)"
494 depends on SUPERH32 && EXPERIMENTAL
496 Generate crash dump after being started by kexec.
497 This should be normally only set in special crash dump kernels
498 which are loaded in the main kernel with kexec-tools into
499 a specially reserved region and then later executed after
500 a crash by kdump/kexec. The crash dump kernel must be compiled
501 to a memory address not used by the main kernel using
504 For more details see Documentation/kdump/kdump.txt
507 bool "Enable seccomp to safely compute untrusted bytecode"
510 This kernel feature is useful for number crunching applications
511 that may need to compute untrusted bytecode during their
512 execution. By using pipes or other transports made available to
513 the process as file descriptors supporting the read/write
514 syscalls, it's possible to isolate those applications in
515 their own address space using seccomp. Once seccomp is
516 enabled via prctl, it cannot be disabled and the task is only
517 allowed to execute a few safe syscalls defined by each seccomp
523 bool "Symmetric multi-processing support"
524 depends on SYS_SUPPORTS_SMP
525 select USE_GENERIC_SMP_HELPERS
527 This enables support for systems with more than one CPU. If you have
528 a system with only one CPU, like most personal computers, say N. If
529 you have a system with more than one CPU, say Y.
531 If you say N here, the kernel will run on single and multiprocessor
532 machines, but will use only one CPU of a multiprocessor machine. If
533 you say Y here, the kernel will run on many, but not all,
534 singleprocessor machines. On a singleprocessor machine, the kernel
535 will run faster if you say N here.
537 People using multiprocessor machines who say Y here should also say
538 Y to "Enhanced Real Time Clock Support", below.
540 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
541 available at <http://www.tldp.org/docs.html#howto>.
543 If you don't know what to do here, say N.
546 int "Maximum number of CPUs (2-32)"
549 default "4" if CPU_SHX3
552 This allows you to specify the maximum number of CPUs which this
553 kernel will support. The maximum supported value is 32 and the
554 minimum value which makes sense is 2.
556 This is purely to save memory - each supported CPU adds
557 approximately eight kilobytes to the kernel image.
559 source "kernel/Kconfig.preempt"
563 depends on !SMP && SUPERH32
565 This enables support for gUSA (general UserSpace Atomicity).
566 This is the default implementation for both UP and non-ll/sc
567 CPUs, and is used by the libc, amongst others.
569 For additional information, design information can be found
570 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
572 This should only be disabled for special cases where alternate
573 atomicity implementations exist.
576 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
577 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
579 Enabling this option will allow the kernel to implement some
580 atomic operations using a software implemention of load-locked/
581 store-conditional (LLSC). On machines which do not have hardware
582 LLSC, this should be more efficient than the other alternative of
583 disabling insterrupts around the atomic sequence.
589 config ZERO_PAGE_OFFSET
590 hex "Zero page offset"
591 default "0x00004000" if SH_SH03
592 default "0x00010000" if PAGE_SIZE_64KB
593 default "0x00002000" if PAGE_SIZE_8KB
596 This sets the default offset of zero page.
598 config BOOT_LINK_OFFSET
599 hex "Link address offset for booting"
602 This option allows you to set the link address offset of the zImage.
603 This can be useful if you are on a board which has a small amount of
607 bool "Wakeup UBC on startup"
608 depends on CPU_SH4 && !CPU_SH4A
610 Selecting this option will wakeup the User Break Controller (UBC) on
611 startup. Although the UBC is left in an awake state when the processor
612 comes up, some boot loaders misbehave by putting the UBC to sleep in a
613 power saving state, which causes issues with things like ptrace().
618 bool "Default bootloader kernel arguments"
621 string "Initial kernel command string"
622 depends on CMDLINE_BOOL
623 default "console=ttySC1,115200"
629 # Even on SuperH devices which don't have an ISA bus,
630 # this variable helps the PCMCIA modules handle
631 # IRQ requesting properly -- Greg Banks.
633 # Though we're generally not interested in it when
634 # we're not using PCMCIA, so we make it dependent on
635 # PCMCIA outright. -- PFM.
638 depends on PCMCIA && HD6446X_SERIES
640 Find out whether you have ISA slots on your motherboard. ISA is the
641 name of a bus system, i.e. the way the CPU talks to the other stuff
642 inside your box. Other bus systems are PCI, EISA, MicroChannel
643 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
644 newer boards don't support it. If you have ISA, say Y, otherwise N.
649 The Extended Industry Standard Architecture (EISA) bus was
650 developed as an open alternative to the IBM MicroChannel bus.
652 The EISA bus provided some of the features of the IBM MicroChannel
653 bus while maintaining backward compatibility with cards made for
654 the older ISA bus. The EISA bus saw limited use between 1988 and
655 1995 when it was made obsolete by the PCI bus.
657 Say Y here if you are building a kernel for an EISA-based machine.
664 MicroChannel Architecture is found in some IBM PS/2 machines and
665 laptops. It is a bus system similar to PCI or ISA. See
666 <file:Documentation/mca.txt> (and especially the web page given
667 there) before attempting to build an MCA bus kernel.
673 tristate "SuperHyway Bus support"
674 depends on CPU_SUBTYPE_SH4_202
677 bool "Maple Bus support"
678 depends on SH_DREAMCAST
680 The Maple Bus is SEGA's serial communication bus for peripherals
681 on the Dreamcast. Without this bus support you won't be able to
682 get your Dreamcast keyboard etc to work, so most users
683 probably want to say 'Y' here, unless you are only using the
684 Dreamcast with a serial line terminal or a remote network
688 bool "Compact Flash Enabler support"
689 depends on SOLUTION_ENGINE || SH_SH03
691 Compact Flash is a small, removable mass storage device introduced
692 in 1994 originally as a PCMCIA device. If you say `Y' here, you
693 compile in support for Compact Flash devices directly connected to
694 a SuperH processor. A Compact Flash FAQ is available at
695 <http://www.compactflash.org/faqs/faq.htm>.
697 If your board has "Directly Connected" CompactFlash at area 5 or 6,
698 you may want to enable this option. Then, you can use CF as
699 primary IDE drive (only tested for SanDisk).
701 If in doubt, select 'N'.
704 prompt "Compact Flash Connection Area"
705 depends on CF_ENABLER
711 If your board has "Directly Connected" CompactFlash, You should
712 select the area where your CF is connected to.
714 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
715 - "Area6" if it is connected to Area 6 (0x18000000)
717 "Area6" will work for most boards.
726 depends on CF_ENABLER
727 default "0xb8000000" if CF_AREA6
728 default "0xb4000000" if CF_AREA5
730 source "arch/sh/drivers/pci/Kconfig"
732 source "drivers/pci/Kconfig"
734 source "drivers/pcmcia/Kconfig"
736 source "drivers/pci/hotplug/Kconfig"
740 menu "Executable file formats"
742 source "fs/Kconfig.binfmt"
746 menu "Power management options (EXPERIMENTAL)"
747 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
749 config ARCH_SUSPEND_POSSIBLE
753 source kernel/power/Kconfig
759 source "drivers/Kconfig"
763 source "arch/sh/Kconfig.debug"
765 source "security/Kconfig"
767 source "crypto/Kconfig"