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
16 select HAVE_ARCH_TRACEHOOK
17 select HAVE_DMA_API_DEBUG
19 The SuperH is a RISC processor targeted for use in embedded systems
20 and consumer electronics; it was also used in the Sega Dreamcast
21 gaming console. The SuperH port has a home page at
22 <http://www.linux-sh.org/>.
27 select HAVE_KRETPROBES
28 select HAVE_FUNCTION_TRACER
29 select HAVE_FTRACE_MCOUNT_RECORD
30 select HAVE_DYNAMIC_FTRACE
32 select ARCH_HIBERNATION_POSSIBLE if MMU
36 def_bool ARCH = "sh64"
40 default "arch/sh/configs/shx3_defconfig" if SUPERH32
41 default "arch/sh/configs/cayman_defconfig" if SUPERH64
43 config RWSEM_GENERIC_SPINLOCK
46 config RWSEM_XCHGADD_ALGORITHM
51 depends on BUG && SUPERH32
53 config GENERIC_FIND_NEXT_BIT
56 config GENERIC_HWEIGHT
59 config GENERIC_HARDIRQS
62 config GENERIC_HARDIRQS_NO__DO_IRQ
65 config GENERIC_IRQ_PROBE
71 config GENERIC_CALIBRATE_DELAY
80 config GENERIC_CLOCKEVENTS
83 config GENERIC_CLOCKEVENTS_BROADCAST
86 config GENERIC_LOCKBREAK
88 depends on SMP && PREEMPT
90 config SYS_SUPPORTS_PM
94 config ARCH_SUSPEND_POSSIBLE
97 config ARCH_HIBERNATION_POSSIBLE
100 config SYS_SUPPORTS_APM_EMULATION
102 select ARCH_SUSPEND_POSSIBLE
104 config SYS_SUPPORTS_SMP
107 config SYS_SUPPORTS_NUMA
110 config SYS_SUPPORTS_PCI
113 config SYS_SUPPORTS_CMT
116 config SYS_SUPPORTS_MTU2
119 config SYS_SUPPORTS_TMU
122 config STACKTRACE_SUPPORT
125 config LOCKDEP_SUPPORT
128 config HAVE_LATENCYTOP_SUPPORT
132 config ARCH_HAS_ILOG2_U32
135 config ARCH_HAS_ILOG2_U64
138 config ARCH_NO_VIRT_TO_BUS
141 config ARCH_HAS_DEFAULT_IDLE
147 source "init/Kconfig"
149 source "kernel/Kconfig.freezer"
165 select CPU_HAS_INTEVT
170 select CPU_HAS_INTEVT
172 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
173 select CPU_HAS_FPU if !CPU_SH4AL_DSP
196 select ARCH_SUSPEND_POSSIBLE
201 prompt "Processor sub-type selection"
207 # SH-2 Processor Support
209 config CPU_SUBTYPE_SH7619
210 bool "Support SH7619 processor"
212 select SYS_SUPPORTS_CMT
214 # SH-2A Processor Support
216 config CPU_SUBTYPE_SH7201
217 bool "Support SH7201 processor"
220 select SYS_SUPPORTS_MTU2
222 config CPU_SUBTYPE_SH7203
223 bool "Support SH7203 processor"
226 select SYS_SUPPORTS_CMT
227 select SYS_SUPPORTS_MTU2
229 config CPU_SUBTYPE_SH7206
230 bool "Support SH7206 processor"
232 select SYS_SUPPORTS_CMT
233 select SYS_SUPPORTS_MTU2
235 config CPU_SUBTYPE_SH7263
236 bool "Support SH7263 processor"
239 select SYS_SUPPORTS_CMT
240 select SYS_SUPPORTS_MTU2
242 config CPU_SUBTYPE_MXG
243 bool "Support MX-G processor"
245 select SYS_SUPPORTS_MTU2
247 Select MX-G if running on an R8A03022BG part.
249 # SH-3 Processor Support
251 config CPU_SUBTYPE_SH7705
252 bool "Support SH7705 processor"
255 config CPU_SUBTYPE_SH7706
256 bool "Support SH7706 processor"
259 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
261 config CPU_SUBTYPE_SH7707
262 bool "Support SH7707 processor"
265 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
267 config CPU_SUBTYPE_SH7708
268 bool "Support SH7708 processor"
271 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
272 if you have a 100 Mhz SH-3 HD6417708R CPU.
274 config CPU_SUBTYPE_SH7709
275 bool "Support SH7709 processor"
278 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
280 config CPU_SUBTYPE_SH7710
281 bool "Support SH7710 processor"
285 Select SH7710 if you have a SH3-DSP SH7710 CPU.
287 config CPU_SUBTYPE_SH7712
288 bool "Support SH7712 processor"
292 Select SH7712 if you have a SH3-DSP SH7712 CPU.
294 config CPU_SUBTYPE_SH7720
295 bool "Support SH7720 processor"
299 Select SH7720 if you have a SH3-DSP SH7720 CPU.
301 config CPU_SUBTYPE_SH7721
302 bool "Support SH7721 processor"
306 Select SH7721 if you have a SH3-DSP SH7721 CPU.
308 # SH-4 Processor Support
310 config CPU_SUBTYPE_SH7750
311 bool "Support SH7750 processor"
314 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
316 config CPU_SUBTYPE_SH7091
317 bool "Support SH7091 processor"
320 Select SH7091 if you have an SH-4 based Sega device (such as
321 the Dreamcast, Naomi, and Naomi 2).
323 config CPU_SUBTYPE_SH7750R
324 bool "Support SH7750R processor"
327 config CPU_SUBTYPE_SH7750S
328 bool "Support SH7750S processor"
331 config CPU_SUBTYPE_SH7751
332 bool "Support SH7751 processor"
335 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
336 or if you have a HD6417751R CPU.
338 config CPU_SUBTYPE_SH7751R
339 bool "Support SH7751R processor"
342 config CPU_SUBTYPE_SH7760
343 bool "Support SH7760 processor"
346 config CPU_SUBTYPE_SH4_202
347 bool "Support SH4-202 processor"
350 # SH-4A Processor Support
352 config CPU_SUBTYPE_SH7723
353 bool "Support SH7723 processor"
357 select ARCH_SPARSEMEM_ENABLE
358 select SYS_SUPPORTS_CMT
360 Select SH7723 if you have an SH-MobileR2 CPU.
362 config CPU_SUBTYPE_SH7724
363 bool "Support SH7724 processor"
367 select ARCH_SPARSEMEM_ENABLE
368 select SYS_SUPPORTS_CMT
370 Select SH7724 if you have an SH-MobileR2R CPU.
372 config CPU_SUBTYPE_SH7763
373 bool "Support SH7763 processor"
376 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
378 config CPU_SUBTYPE_SH7770
379 bool "Support SH7770 processor"
382 config CPU_SUBTYPE_SH7780
383 bool "Support SH7780 processor"
386 config CPU_SUBTYPE_SH7785
387 bool "Support SH7785 processor"
390 select ARCH_SPARSEMEM_ENABLE
391 select SYS_SUPPORTS_NUMA
393 config CPU_SUBTYPE_SH7786
394 bool "Support SH7786 processor"
397 select CPU_HAS_PTEAEX
398 select ARCH_SPARSEMEM_ENABLE
399 select SYS_SUPPORTS_NUMA
401 config CPU_SUBTYPE_SHX3
402 bool "Support SH-X3 processor"
405 select ARCH_SPARSEMEM_ENABLE
406 select SYS_SUPPORTS_NUMA
407 select SYS_SUPPORTS_SMP
408 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
410 # SH4AL-DSP Processor Support
412 config CPU_SUBTYPE_SH7343
413 bool "Support SH7343 processor"
416 select SYS_SUPPORTS_CMT
418 config CPU_SUBTYPE_SH7722
419 bool "Support SH7722 processor"
423 select ARCH_SPARSEMEM_ENABLE
424 select SYS_SUPPORTS_NUMA
425 select SYS_SUPPORTS_CMT
426 select SYS_SUPPORTS_TMU
428 config CPU_SUBTYPE_SH7366
429 bool "Support SH7366 processor"
433 select ARCH_SPARSEMEM_ENABLE
434 select SYS_SUPPORTS_NUMA
435 select SYS_SUPPORTS_CMT
444 prompt "Processor sub-type selection"
446 # SH-5 Processor Support
448 config CPU_SUBTYPE_SH5_101
449 bool "Support SH5-101 processor"
452 config CPU_SUBTYPE_SH5_103
453 bool "Support SH5-103 processor"
460 source "arch/sh/mm/Kconfig"
462 source "arch/sh/Kconfig.cpu"
464 source "arch/sh/boards/Kconfig"
466 menu "Timer and clock configuration"
469 bool "TMU timer support"
470 depends on CPU_SH3 || CPU_SH4
473 This enables the use of the TMU as the system timer.
476 bool "TMU timer driver"
477 depends on !SH_TMU && SYS_SUPPORTS_TMU
480 This enables the build of the TMU timer driver.
483 bool "CMT timer driver"
484 depends on SYS_SUPPORTS_CMT
487 This enables build of the CMT timer driver.
490 bool "MTU2 timer driver"
491 depends on SYS_SUPPORTS_MTU2
494 This enables build of the MTU2 timer driver.
498 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
500 default "86" if CPU_SUBTYPE_SH7619
501 default "140" if CPU_SUBTYPE_SH7206
502 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
503 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
504 default "238" if CPU_SUBTYPE_MXG
508 int "Peripheral clock frequency (in Hz)"
509 default "27000000" if CPU_SUBTYPE_SH7343
510 default "31250000" if CPU_SUBTYPE_SH7619
511 default "32000000" if CPU_SUBTYPE_SH7722
512 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
513 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
514 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
515 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
517 default "41666666" if CPU_SUBTYPE_SH7724
518 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
519 default "66000000" if CPU_SUBTYPE_SH4_202
522 This option is used to specify the peripheral clock frequency.
523 This is necessary for determining the reference clock value on
524 platforms lacking an RTC.
527 int "CPU Mode Pin Setting"
529 default 6 if CPU_SUBTYPE_SH7206
530 default 5 if CPU_SUBTYPE_SH7619
533 MD2 - MD0 pin setting.
535 source "kernel/time/Kconfig"
539 menu "CPU Frequency scaling"
541 source "drivers/cpufreq/Kconfig"
544 tristate "SuperH CPU Frequency driver"
546 select CPU_FREQ_TABLE
548 This adds the cpufreq driver for SuperH. Any CPU that supports
549 clock rate rounding through the clock framework can use this
550 driver. While it will make the kernel slightly larger, this is
551 harmless for CPUs that don't support rate rounding. The driver
552 will also generate a notice in the boot log before disabling
553 itself if the CPU in question is not capable of rate rounding.
555 For details, take a look at <file:Documentation/cpu-freq>.
561 source "arch/sh/drivers/Kconfig"
565 menu "Kernel features"
567 source kernel/Kconfig.hz
570 bool "kexec system call (EXPERIMENTAL)"
571 depends on SUPERH32 && EXPERIMENTAL && MMU
573 kexec is a system call that implements the ability to shutdown your
574 current kernel, and to start another kernel. It is like a reboot
575 but it is independent of the system firmware. And like a reboot
576 you can start any kernel with it, not just Linux.
578 The name comes from the similarity to the exec system call.
580 It is an ongoing process to be certain the hardware in a machine
581 is properly shutdown, so do not be surprised if this code does not
582 initially work for you. It may help to enable device hotplugging
583 support. As of this writing the exact hardware interface is
584 strongly in flux, so no good recommendation can be made.
587 bool "kernel crash dumps (EXPERIMENTAL)"
588 depends on SUPERH32 && EXPERIMENTAL
590 Generate crash dump after being started by kexec.
591 This should be normally only set in special crash dump kernels
592 which are loaded in the main kernel with kexec-tools into
593 a specially reserved region and then later executed after
594 a crash by kdump/kexec. The crash dump kernel must be compiled
595 to a memory address not used by the main kernel using
598 For more details see Documentation/kdump/kdump.txt
601 bool "kexec jump (EXPERIMENTAL)"
602 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
604 Jump between original kernel and kexeced kernel and invoke
608 bool "Enable seccomp to safely compute untrusted bytecode"
611 This kernel feature is useful for number crunching applications
612 that may need to compute untrusted bytecode during their
613 execution. By using pipes or other transports made available to
614 the process as file descriptors supporting the read/write
615 syscalls, it's possible to isolate those applications in
616 their own address space using seccomp. Once seccomp is
617 enabled via prctl, it cannot be disabled and the task is only
618 allowed to execute a few safe syscalls defined by each seccomp
624 bool "Symmetric multi-processing support"
625 depends on SYS_SUPPORTS_SMP
626 select USE_GENERIC_SMP_HELPERS
628 This enables support for systems with more than one CPU. If you have
629 a system with only one CPU, like most personal computers, say N. If
630 you have a system with more than one CPU, say Y.
632 If you say N here, the kernel will run on single and multiprocessor
633 machines, but will use only one CPU of a multiprocessor machine. If
634 you say Y here, the kernel will run on many, but not all,
635 singleprocessor machines. On a singleprocessor machine, the kernel
636 will run faster if you say N here.
638 People using multiprocessor machines who say Y here should also say
639 Y to "Enhanced Real Time Clock Support", below.
641 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
642 available at <http://www.tldp.org/docs.html#howto>.
644 If you don't know what to do here, say N.
647 int "Maximum number of CPUs (2-32)"
650 default "4" if CPU_SHX3
653 This allows you to specify the maximum number of CPUs which this
654 kernel will support. The maximum supported value is 32 and the
655 minimum value which makes sense is 2.
657 This is purely to save memory - each supported CPU adds
658 approximately eight kilobytes to the kernel image.
660 source "kernel/Kconfig.preempt"
664 depends on !SMP && SUPERH32
666 This enables support for gUSA (general UserSpace Atomicity).
667 This is the default implementation for both UP and non-ll/sc
668 CPUs, and is used by the libc, amongst others.
670 For additional information, design information can be found
671 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
673 This should only be disabled for special cases where alternate
674 atomicity implementations exist.
677 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
678 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
680 Enabling this option will allow the kernel to implement some
681 atomic operations using a software implementation of load-locked/
682 store-conditional (LLSC). On machines which do not have hardware
683 LLSC, this should be more efficient than the other alternative of
684 disabling interrupts around the atomic sequence.
690 config ZERO_PAGE_OFFSET
691 hex "Zero page offset"
692 default "0x00004000" if SH_SH03
693 default "0x00010000" if PAGE_SIZE_64KB
694 default "0x00002000" if PAGE_SIZE_8KB
697 This sets the default offset of zero page.
699 config BOOT_LINK_OFFSET
700 hex "Link address offset for booting"
703 This option allows you to set the link address offset of the zImage.
704 This can be useful if you are on a board which has a small amount of
708 bool "Wakeup UBC on startup"
709 depends on CPU_SH4 && !CPU_SH4A
711 Selecting this option will wakeup the User Break Controller (UBC) on
712 startup. Although the UBC is left in an awake state when the processor
713 comes up, some boot loaders misbehave by putting the UBC to sleep in a
714 power saving state, which causes issues with things like ptrace().
719 bool "Default bootloader kernel arguments"
722 string "Initial kernel command string"
723 depends on CMDLINE_BOOL
724 default "console=ttySC1,115200"
731 tristate "SuperHyway Bus support"
732 depends on CPU_SUBTYPE_SH4_202
735 bool "Maple Bus support"
736 depends on SH_DREAMCAST
738 The Maple Bus is SEGA's serial communication bus for peripherals
739 on the Dreamcast. Without this bus support you won't be able to
740 get your Dreamcast keyboard etc to work, so most users
741 probably want to say 'Y' here, unless you are only using the
742 Dreamcast with a serial line terminal or a remote network
745 source "arch/sh/drivers/pci/Kconfig"
747 source "drivers/pci/pcie/Kconfig"
749 source "drivers/pci/Kconfig"
751 source "drivers/pcmcia/Kconfig"
753 source "drivers/pci/hotplug/Kconfig"
757 menu "Executable file formats"
759 source "fs/Kconfig.binfmt"
763 menu "Power management options (EXPERIMENTAL)"
764 depends on EXPERIMENTAL
766 source "kernel/power/Kconfig"
768 source "drivers/cpuidle/Kconfig"
774 source "drivers/Kconfig"
778 source "arch/sh/Kconfig.debug"
780 source "security/Kconfig"
782 source "crypto/Kconfig"