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_IRQ_PROBE
54 config GENERIC_CALIBRATE_DELAY
63 config GENERIC_CLOCKEVENTS
66 config SYS_SUPPORTS_PM
69 config SYS_SUPPORTS_APM_EMULATION
71 select SYS_SUPPORTS_PM
73 config SYS_SUPPORTS_SMP
76 config SYS_SUPPORTS_NUMA
79 config SYS_SUPPORTS_PCI
82 config STACKTRACE_SUPPORT
85 config LOCKDEP_SUPPORT
88 config ARCH_HAS_ILOG2_U32
91 config ARCH_HAS_ILOG2_U64
94 config ARCH_NO_VIRT_TO_BUS
97 config ARCH_SUPPORTS_AOUT
103 source "init/Kconfig"
119 select CPU_HAS_INTEVT
124 select CPU_HAS_INTEVT
126 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
127 select CPU_HAS_FPU if !CPU_SH4AL_DSP
149 prompt "Processor sub-type selection"
155 # SH-2 Processor Support
157 config CPU_SUBTYPE_SH7619
158 bool "Support SH7619 processor"
161 # SH-2A Processor Support
163 config CPU_SUBTYPE_SH7203
164 bool "Support SH7203 processor"
168 config CPU_SUBTYPE_SH7206
169 bool "Support SH7206 processor"
172 config CPU_SUBTYPE_SH7263
173 bool "Support SH7263 processor"
177 config CPU_SUBTYPE_MXG
178 bool "Support MX-G processor"
181 Select MX-G if running on an R8A03022BG part.
183 # SH-3 Processor Support
185 config CPU_SUBTYPE_SH7705
186 bool "Support SH7705 processor"
189 config CPU_SUBTYPE_SH7706
190 bool "Support SH7706 processor"
193 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
195 config CPU_SUBTYPE_SH7707
196 bool "Support SH7707 processor"
199 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
201 config CPU_SUBTYPE_SH7708
202 bool "Support SH7708 processor"
205 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
206 if you have a 100 Mhz SH-3 HD6417708R CPU.
208 config CPU_SUBTYPE_SH7709
209 bool "Support SH7709 processor"
212 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
214 config CPU_SUBTYPE_SH7710
215 bool "Support SH7710 processor"
219 Select SH7710 if you have a SH3-DSP SH7710 CPU.
221 config CPU_SUBTYPE_SH7712
222 bool "Support SH7712 processor"
226 Select SH7712 if you have a SH3-DSP SH7712 CPU.
228 config CPU_SUBTYPE_SH7720
229 bool "Support SH7720 processor"
233 Select SH7720 if you have a SH3-DSP SH7720 CPU.
235 config CPU_SUBTYPE_SH7721
236 bool "Support SH7721 processor"
240 Select SH7721 if you have a SH3-DSP SH7721 CPU.
242 # SH-4 Processor Support
244 config CPU_SUBTYPE_SH7750
245 bool "Support SH7750 processor"
248 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
250 config CPU_SUBTYPE_SH7091
251 bool "Support SH7091 processor"
254 Select SH7091 if you have an SH-4 based Sega device (such as
255 the Dreamcast, Naomi, and Naomi 2).
257 config CPU_SUBTYPE_SH7750R
258 bool "Support SH7750R processor"
261 config CPU_SUBTYPE_SH7750S
262 bool "Support SH7750S processor"
265 config CPU_SUBTYPE_SH7751
266 bool "Support SH7751 processor"
269 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
270 or if you have a HD6417751R CPU.
272 config CPU_SUBTYPE_SH7751R
273 bool "Support SH7751R processor"
276 config CPU_SUBTYPE_SH7760
277 bool "Support SH7760 processor"
280 config CPU_SUBTYPE_SH4_202
281 bool "Support SH4-202 processor"
284 # SH-4A Processor Support
286 config CPU_SUBTYPE_SH7723
287 bool "Support SH7723 processor"
290 select ARCH_SPARSEMEM_ENABLE
292 Select SH7723 if you have an SH-MobileR2 CPU.
294 config CPU_SUBTYPE_SH7763
295 bool "Support SH7763 processor"
298 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
300 config CPU_SUBTYPE_SH7770
301 bool "Support SH7770 processor"
304 config CPU_SUBTYPE_SH7780
305 bool "Support SH7780 processor"
308 config CPU_SUBTYPE_SH7785
309 bool "Support SH7785 processor"
312 select ARCH_SPARSEMEM_ENABLE
313 select SYS_SUPPORTS_NUMA
315 config CPU_SUBTYPE_SHX3
316 bool "Support SH-X3 processor"
319 select ARCH_SPARSEMEM_ENABLE
320 select SYS_SUPPORTS_NUMA
321 select SYS_SUPPORTS_SMP
323 # SH4AL-DSP Processor Support
325 config CPU_SUBTYPE_SH7343
326 bool "Support SH7343 processor"
329 config CPU_SUBTYPE_SH7722
330 bool "Support SH7722 processor"
333 select ARCH_SPARSEMEM_ENABLE
334 select SYS_SUPPORTS_NUMA
336 config CPU_SUBTYPE_SH7366
337 bool "Support SH7366 processor"
340 select ARCH_SPARSEMEM_ENABLE
341 select SYS_SUPPORTS_NUMA
343 # SH-5 Processor Support
345 config CPU_SUBTYPE_SH5_101
346 bool "Support SH5-101 processor"
349 config CPU_SUBTYPE_SH5_103
350 bool "Support SH5-103 processor"
355 source "arch/sh/mm/Kconfig"
357 source "arch/sh/Kconfig.cpu"
359 source "arch/sh/boards/Kconfig"
361 menu "Timer and clock configuration"
365 prompt "TMU timer support"
366 depends on CPU_SH3 || CPU_SH4
368 select GENERIC_CLOCKEVENTS
370 This enables the use of the TMU as the system timer.
374 prompt "CMT timer support"
375 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
377 This enables the use of the CMT as the system timer.
381 prompt "MTU2 timer support"
384 This enables the use of the MTU2 as the system timer.
388 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
390 default "86" if CPU_SUBTYPE_SH7619
391 default "140" if CPU_SUBTYPE_SH7206
392 default "142" if CPU_SUBTYPE_SH7203
393 default "238" if CPU_SUBTYPE_MXG
397 int "Peripheral clock frequency (in Hz)"
398 default "27000000" if CPU_SUBTYPE_SH7343
399 default "31250000" if CPU_SUBTYPE_SH7619
400 default "32000000" if CPU_SUBTYPE_SH7722
401 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
402 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
403 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
404 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
405 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
406 default "66000000" if CPU_SUBTYPE_SH4_202
409 This option is used to specify the peripheral clock frequency.
410 This is necessary for determining the reference clock value on
411 platforms lacking an RTC.
414 int "CPU Mode Pin Setting"
416 default 6 if CPU_SUBTYPE_SH7206
417 default 5 if CPU_SUBTYPE_SH7619
420 MD2 - MD0 pin setting.
422 source "kernel/time/Kconfig"
426 menu "CPU Frequency scaling"
428 source "drivers/cpufreq/Kconfig"
431 tristate "SuperH CPU Frequency driver"
433 select CPU_FREQ_TABLE
435 This adds the cpufreq driver for SuperH. At present, only
436 the SH-4 is supported.
438 For details, take a look at <file:Documentation/cpu-freq>.
444 source "arch/sh/drivers/Kconfig"
451 menu "Kernel features"
453 source kernel/Kconfig.hz
456 bool "kexec system call (EXPERIMENTAL)"
457 depends on SUPERH32 && EXPERIMENTAL
459 kexec is a system call that implements the ability to shutdown your
460 current kernel, and to start another kernel. It is like a reboot
461 but it is independent of the system firmware. And like a reboot
462 you can start any kernel with it, not just Linux.
464 The name comes from the similarity to the exec system call.
466 It is an ongoing process to be certain the hardware in a machine
467 is properly shutdown, so do not be surprised if this code does not
468 initially work for you. It may help to enable device hotplugging
469 support. As of this writing the exact hardware interface is
470 strongly in flux, so no good recommendation can be made.
473 bool "kernel crash dumps (EXPERIMENTAL)"
474 depends on SUPERH32 && EXPERIMENTAL
476 Generate crash dump after being started by kexec.
477 This should be normally only set in special crash dump kernels
478 which are loaded in the main kernel with kexec-tools into
479 a specially reserved region and then later executed after
480 a crash by kdump/kexec. The crash dump kernel must be compiled
481 to a memory address not used by the main kernel using
484 For more details see Documentation/kdump/kdump.txt
487 bool "Enable seccomp to safely compute untrusted bytecode"
491 This kernel feature is useful for number crunching applications
492 that may need to compute untrusted bytecode during their
493 execution. By using pipes or other transports made available to
494 the process as file descriptors supporting the read/write
495 syscalls, it's possible to isolate those applications in
496 their own address space using seccomp. Once seccomp is
497 enabled via prctl, it cannot be disabled and the task is only
498 allowed to execute a few safe syscalls defined by each seccomp
504 bool "Symmetric multi-processing support"
505 depends on SYS_SUPPORTS_SMP
506 select USE_GENERIC_SMP_HELPERS
508 This enables support for systems with more than one CPU. If you have
509 a system with only one CPU, like most personal computers, say N. If
510 you have a system with more than one CPU, say Y.
512 If you say N here, the kernel will run on single and multiprocessor
513 machines, but will use only one CPU of a multiprocessor machine. If
514 you say Y here, the kernel will run on many, but not all,
515 singleprocessor machines. On a singleprocessor machine, the kernel
516 will run faster if you say N here.
518 People using multiprocessor machines who say Y here should also say
519 Y to "Enhanced Real Time Clock Support", below.
521 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
522 available at <http://www.tldp.org/docs.html#howto>.
524 If you don't know what to do here, say N.
527 int "Maximum number of CPUs (2-32)"
530 default "4" if CPU_SHX3
533 This allows you to specify the maximum number of CPUs which this
534 kernel will support. The maximum supported value is 32 and the
535 minimum value which makes sense is 2.
537 This is purely to save memory - each supported CPU adds
538 approximately eight kilobytes to the kernel image.
540 source "kernel/Kconfig.preempt"
544 depends on !SMP && SUPERH32
546 This enables support for gUSA (general UserSpace Atomicity).
547 This is the default implementation for both UP and non-ll/sc
548 CPUs, and is used by the libc, amongst others.
550 For additional information, design information can be found
551 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
553 This should only be disabled for special cases where alternate
554 atomicity implementations exist.
557 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
558 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
560 Enabling this option will allow the kernel to implement some
561 atomic operations using a software implemention of load-locked/
562 store-conditional (LLSC). On machines which do not have hardware
563 LLSC, this should be more efficient than the other alternative of
564 disabling insterrupts around the atomic sequence.
570 config ZERO_PAGE_OFFSET
571 hex "Zero page offset"
572 default "0x00004000" if SH_SH03
573 default "0x00010000" if PAGE_SIZE_64KB
574 default "0x00002000" if PAGE_SIZE_8KB
577 This sets the default offset of zero page.
579 config BOOT_LINK_OFFSET
580 hex "Link address offset for booting"
583 This option allows you to set the link address offset of the zImage.
584 This can be useful if you are on a board which has a small amount of
588 bool "Wakeup UBC on startup"
589 depends on CPU_SH4 && !CPU_SH4A
591 Selecting this option will wakeup the User Break Controller (UBC) on
592 startup. Although the UBC is left in an awake state when the processor
593 comes up, some boot loaders misbehave by putting the UBC to sleep in a
594 power saving state, which causes issues with things like ptrace().
599 bool "Default bootloader kernel arguments"
602 string "Initial kernel command string"
603 depends on CMDLINE_BOOL
604 default "console=ttySC1,115200"
610 # Even on SuperH devices which don't have an ISA bus,
611 # this variable helps the PCMCIA modules handle
612 # IRQ requesting properly -- Greg Banks.
614 # Though we're generally not interested in it when
615 # we're not using PCMCIA, so we make it dependent on
616 # PCMCIA outright. -- PFM.
619 depends on PCMCIA && HD6446X_SERIES
621 Find out whether you have ISA slots on your motherboard. ISA is the
622 name of a bus system, i.e. the way the CPU talks to the other stuff
623 inside your box. Other bus systems are PCI, EISA, MicroChannel
624 (MCA) or VESA. ISA is an older system, now being displaced by PCI;
625 newer boards don't support it. If you have ISA, say Y, otherwise N.
630 The Extended Industry Standard Architecture (EISA) bus was
631 developed as an open alternative to the IBM MicroChannel bus.
633 The EISA bus provided some of the features of the IBM MicroChannel
634 bus while maintaining backward compatibility with cards made for
635 the older ISA bus. The EISA bus saw limited use between 1988 and
636 1995 when it was made obsolete by the PCI bus.
638 Say Y here if you are building a kernel for an EISA-based machine.
645 MicroChannel Architecture is found in some IBM PS/2 machines and
646 laptops. It is a bus system similar to PCI or ISA. See
647 <file:Documentation/mca.txt> (and especially the web page given
648 there) before attempting to build an MCA bus kernel.
654 tristate "SuperHyway Bus support"
655 depends on CPU_SUBTYPE_SH4_202
658 bool "Maple Bus support"
659 depends on SH_DREAMCAST
661 The Maple Bus is SEGA's serial communication bus for peripherals
662 on the Dreamcast. Without this bus support you won't be able to
663 get your Dreamcast keyboard etc to work, so most users
664 probably want to say 'Y' here, unless you are only using the
665 Dreamcast with a serial line terminal or a remote network
669 bool "Compact Flash Enabler support"
670 depends on SOLUTION_ENGINE || SH_SH03
672 Compact Flash is a small, removable mass storage device introduced
673 in 1994 originally as a PCMCIA device. If you say `Y' here, you
674 compile in support for Compact Flash devices directly connected to
675 a SuperH processor. A Compact Flash FAQ is available at
676 <http://www.compactflash.org/faqs/faq.htm>.
678 If your board has "Directly Connected" CompactFlash at area 5 or 6,
679 you may want to enable this option. Then, you can use CF as
680 primary IDE drive (only tested for SanDisk).
682 If in doubt, select 'N'.
685 prompt "Compact Flash Connection Area"
686 depends on CF_ENABLER
692 If your board has "Directly Connected" CompactFlash, You should
693 select the area where your CF is connected to.
695 - "Area5" if CompactFlash is connected to Area 5 (0x14000000)
696 - "Area6" if it is connected to Area 6 (0x18000000)
698 "Area6" will work for most boards.
707 depends on CF_ENABLER
708 default "0xb8000000" if CF_AREA6
709 default "0xb4000000" if CF_AREA5
711 source "arch/sh/drivers/pci/Kconfig"
713 source "drivers/pci/Kconfig"
715 source "drivers/pcmcia/Kconfig"
717 source "drivers/pci/hotplug/Kconfig"
721 menu "Executable file formats"
723 source "fs/Kconfig.binfmt"
727 menu "Power management options (EXPERIMENTAL)"
728 depends on EXPERIMENTAL && SYS_SUPPORTS_PM
730 config ARCH_SUSPEND_POSSIBLE
734 source kernel/power/Kconfig
740 source "drivers/Kconfig"
744 source "arch/sh/Kconfig.debug"
746 source "security/Kconfig"
748 source "crypto/Kconfig"