2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux/SuperH Kernel Configuration"
15 select HAVE_GENERIC_DMA_COHERENT
16 select HAVE_IOREMAP_PROT if MMU
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_DMA_API_DEBUG
20 select HAVE_PERF_EVENTS
21 select PERF_USE_VMALLOC
22 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_BZIP2
24 select HAVE_KERNEL_LZMA
25 select HAVE_SYSCALL_TRACEPOINTS
27 select GENERIC_ATOMIC64
29 The SuperH is a RISC processor targeted for use in embedded systems
30 and consumer electronics; it was also used in the Sega Dreamcast
31 gaming console. The SuperH port has a home page at
32 <http://www.linux-sh.org/>.
37 select HAVE_KRETPROBES
38 select HAVE_FUNCTION_TRACER
39 select HAVE_FTRACE_MCOUNT_RECORD
40 select HAVE_DYNAMIC_FTRACE
41 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
42 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
43 select HAVE_FUNCTION_GRAPH_TRACER
45 select HAVE_HW_BREAKPOINT
46 select PERF_EVENTS if HAVE_HW_BREAKPOINT
47 select ARCH_HIBERNATION_POSSIBLE if MMU
50 def_bool ARCH = "sh64"
54 default "arch/sh/configs/shx3_defconfig" if SUPERH32
55 default "arch/sh/configs/cayman_defconfig" if SUPERH64
57 config RWSEM_GENERIC_SPINLOCK
60 config RWSEM_XCHGADD_ALGORITHM
65 depends on BUG && SUPERH32
71 config GENERIC_FIND_NEXT_BIT
74 config GENERIC_HWEIGHT
77 config GENERIC_HARDIRQS
80 config GENERIC_HARDIRQS_NO__DO_IRQ
83 config GENERIC_IRQ_PROBE
92 config GENERIC_CALIBRATE_DELAY
101 config GENERIC_CLOCKEVENTS
104 config GENERIC_CLOCKEVENTS_BROADCAST
107 config GENERIC_CMOS_UPDATE
109 depends on SH_SH03 || SH_DREAMCAST
111 config GENERIC_LOCKBREAK
113 depends on SMP && PREEMPT
115 config SYS_SUPPORTS_PM
119 config ARCH_SUSPEND_POSSIBLE
122 config ARCH_HIBERNATION_POSSIBLE
125 config SYS_SUPPORTS_APM_EMULATION
127 select ARCH_SUSPEND_POSSIBLE
129 config SYS_SUPPORTS_HUGETLBFS
132 config SYS_SUPPORTS_SMP
135 config SYS_SUPPORTS_NUMA
138 config SYS_SUPPORTS_PCI
141 config SYS_SUPPORTS_CMT
144 config SYS_SUPPORTS_MTU2
147 config SYS_SUPPORTS_TMU
150 config STACKTRACE_SUPPORT
153 config LOCKDEP_SUPPORT
156 config HAVE_LATENCYTOP_SUPPORT
160 config ARCH_HAS_ILOG2_U32
163 config ARCH_HAS_ILOG2_U64
166 config ARCH_NO_VIRT_TO_BUS
169 config ARCH_HAS_DEFAULT_IDLE
172 config ARCH_HAS_CPU_IDLE_WAIT
181 config DMA_NONCOHERENT
182 def_bool !DMA_COHERENT
184 source "init/Kconfig"
186 source "kernel/Kconfig.freezer"
202 select CPU_HAS_INTEVT
204 select SYS_SUPPORTS_TMU
208 select CPU_HAS_INTEVT
210 select CPU_HAS_FPU if !CPU_SH4AL_DSP
211 select SYS_SUPPORTS_TMU
212 select SYS_SUPPORTS_HUGETLBFS if MMU
226 select SYS_SUPPORTS_TMU
227 select SYS_SUPPORTS_HUGETLBFS if MMU
238 select ARCH_SUSPEND_POSSIBLE
245 prompt "Processor sub-type selection"
251 # SH-2 Processor Support
253 config CPU_SUBTYPE_SH7619
254 bool "Support SH7619 processor"
256 select SYS_SUPPORTS_CMT
258 # SH-2A Processor Support
260 config CPU_SUBTYPE_SH7201
261 bool "Support SH7201 processor"
264 select SYS_SUPPORTS_MTU2
266 config CPU_SUBTYPE_SH7203
267 bool "Support SH7203 processor"
270 select SYS_SUPPORTS_CMT
271 select SYS_SUPPORTS_MTU2
273 config CPU_SUBTYPE_SH7206
274 bool "Support SH7206 processor"
276 select SYS_SUPPORTS_CMT
277 select SYS_SUPPORTS_MTU2
279 config CPU_SUBTYPE_SH7263
280 bool "Support SH7263 processor"
283 select SYS_SUPPORTS_CMT
284 select SYS_SUPPORTS_MTU2
286 config CPU_SUBTYPE_MXG
287 bool "Support MX-G processor"
289 select SYS_SUPPORTS_MTU2
291 Select MX-G if running on an R8A03022BG part.
293 # SH-3 Processor Support
295 config CPU_SUBTYPE_SH7705
296 bool "Support SH7705 processor"
299 config CPU_SUBTYPE_SH7706
300 bool "Support SH7706 processor"
303 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
305 config CPU_SUBTYPE_SH7707
306 bool "Support SH7707 processor"
309 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
311 config CPU_SUBTYPE_SH7708
312 bool "Support SH7708 processor"
315 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
316 if you have a 100 Mhz SH-3 HD6417708R CPU.
318 config CPU_SUBTYPE_SH7709
319 bool "Support SH7709 processor"
322 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
324 config CPU_SUBTYPE_SH7710
325 bool "Support SH7710 processor"
329 Select SH7710 if you have a SH3-DSP SH7710 CPU.
331 config CPU_SUBTYPE_SH7712
332 bool "Support SH7712 processor"
336 Select SH7712 if you have a SH3-DSP SH7712 CPU.
338 config CPU_SUBTYPE_SH7720
339 bool "Support SH7720 processor"
342 select SYS_SUPPORTS_CMT
344 Select SH7720 if you have a SH3-DSP SH7720 CPU.
346 config CPU_SUBTYPE_SH7721
347 bool "Support SH7721 processor"
350 select SYS_SUPPORTS_CMT
352 Select SH7721 if you have a SH3-DSP SH7721 CPU.
354 # SH-4 Processor Support
356 config CPU_SUBTYPE_SH7750
357 bool "Support SH7750 processor"
360 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
362 config CPU_SUBTYPE_SH7091
363 bool "Support SH7091 processor"
366 Select SH7091 if you have an SH-4 based Sega device (such as
367 the Dreamcast, Naomi, and Naomi 2).
369 config CPU_SUBTYPE_SH7750R
370 bool "Support SH7750R processor"
373 config CPU_SUBTYPE_SH7750S
374 bool "Support SH7750S processor"
377 config CPU_SUBTYPE_SH7751
378 bool "Support SH7751 processor"
381 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
382 or if you have a HD6417751R CPU.
384 config CPU_SUBTYPE_SH7751R
385 bool "Support SH7751R processor"
388 config CPU_SUBTYPE_SH7760
389 bool "Support SH7760 processor"
392 config CPU_SUBTYPE_SH4_202
393 bool "Support SH4-202 processor"
396 # SH-4A Processor Support
398 config CPU_SUBTYPE_SH7723
399 bool "Support SH7723 processor"
403 select ARCH_SPARSEMEM_ENABLE
404 select SYS_SUPPORTS_CMT
406 Select SH7723 if you have an SH-MobileR2 CPU.
408 config CPU_SUBTYPE_SH7724
409 bool "Support SH7724 processor"
413 select ARCH_SPARSEMEM_ENABLE
414 select SYS_SUPPORTS_CMT
416 Select SH7724 if you have an SH-MobileR2R CPU.
418 config CPU_SUBTYPE_SH7757
419 bool "Support SH7757 processor"
423 Select SH7757 if you have a SH4A SH7757 CPU.
425 config CPU_SUBTYPE_SH7763
426 bool "Support SH7763 processor"
429 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
431 config CPU_SUBTYPE_SH7770
432 bool "Support SH7770 processor"
435 config CPU_SUBTYPE_SH7780
436 bool "Support SH7780 processor"
439 config CPU_SUBTYPE_SH7785
440 bool "Support SH7785 processor"
443 select ARCH_SPARSEMEM_ENABLE
444 select SYS_SUPPORTS_NUMA
446 config CPU_SUBTYPE_SH7786
447 bool "Support SH7786 processor"
450 select CPU_HAS_PTEAEX
451 select ARCH_SPARSEMEM_ENABLE
452 select SYS_SUPPORTS_NUMA
453 select SYS_SUPPORTS_SMP
454 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
456 config CPU_SUBTYPE_SHX3
457 bool "Support SH-X3 processor"
460 select ARCH_SPARSEMEM_ENABLE
461 select SYS_SUPPORTS_NUMA
462 select SYS_SUPPORTS_SMP
463 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
465 # SH4AL-DSP Processor Support
467 config CPU_SUBTYPE_SH7343
468 bool "Support SH7343 processor"
471 select SYS_SUPPORTS_CMT
473 config CPU_SUBTYPE_SH7722
474 bool "Support SH7722 processor"
478 select ARCH_SPARSEMEM_ENABLE
479 select SYS_SUPPORTS_NUMA
480 select SYS_SUPPORTS_CMT
482 config CPU_SUBTYPE_SH7366
483 bool "Support SH7366 processor"
487 select ARCH_SPARSEMEM_ENABLE
488 select SYS_SUPPORTS_NUMA
489 select SYS_SUPPORTS_CMT
498 prompt "Processor sub-type selection"
500 # SH-5 Processor Support
502 config CPU_SUBTYPE_SH5_101
503 bool "Support SH5-101 processor"
506 config CPU_SUBTYPE_SH5_103
507 bool "Support SH5-103 processor"
514 source "arch/sh/mm/Kconfig"
516 source "arch/sh/Kconfig.cpu"
518 source "arch/sh/boards/Kconfig"
520 menu "Timer and clock configuration"
523 bool "TMU timer driver"
524 depends on SYS_SUPPORTS_TMU
527 This enables the build of the TMU timer driver.
530 bool "CMT timer driver"
531 depends on SYS_SUPPORTS_CMT
534 This enables build of the CMT timer driver.
537 bool "MTU2 timer driver"
538 depends on SYS_SUPPORTS_MTU2
541 This enables build of the MTU2 timer driver.
544 int "Peripheral clock frequency (in Hz)"
545 depends on SH_CLK_CPG_LEGACY
546 default "31250000" if CPU_SUBTYPE_SH7619
547 default "33333333" if CPU_SUBTYPE_SH7770 || \
548 CPU_SUBTYPE_SH7760 || \
549 CPU_SUBTYPE_SH7705 || \
550 CPU_SUBTYPE_SH7203 || \
551 CPU_SUBTYPE_SH7206 || \
552 CPU_SUBTYPE_SH7263 || \
555 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
556 default "66000000" if CPU_SUBTYPE_SH4_202
559 This option is used to specify the peripheral clock frequency.
560 This is necessary for determining the reference clock value on
561 platforms lacking an RTC.
566 config SH_CLK_CPG_LEGACY
567 depends on SH_CLK_CPG
568 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE
571 int "CPU Mode Pin Setting"
573 default 6 if CPU_SUBTYPE_SH7206
574 default 5 if CPU_SUBTYPE_SH7619
577 MD2 - MD0 pin setting.
579 source "kernel/time/Kconfig"
583 menu "CPU Frequency scaling"
585 source "drivers/cpufreq/Kconfig"
588 tristate "SuperH CPU Frequency driver"
590 select CPU_FREQ_TABLE
592 This adds the cpufreq driver for SuperH. Any CPU that supports
593 clock rate rounding through the clock framework can use this
594 driver. While it will make the kernel slightly larger, this is
595 harmless for CPUs that don't support rate rounding. The driver
596 will also generate a notice in the boot log before disabling
597 itself if the CPU in question is not capable of rate rounding.
599 For details, take a look at <file:Documentation/cpu-freq>.
605 source "arch/sh/drivers/Kconfig"
609 menu "Kernel features"
611 source kernel/Kconfig.hz
614 bool "kexec system call (EXPERIMENTAL)"
615 depends on SUPERH32 && EXPERIMENTAL && MMU
617 kexec is a system call that implements the ability to shutdown your
618 current kernel, and to start another kernel. It is like a reboot
619 but it is independent of the system firmware. And like a reboot
620 you can start any kernel with it, not just Linux.
622 The name comes from the similarity to the exec system call.
624 It is an ongoing process to be certain the hardware in a machine
625 is properly shutdown, so do not be surprised if this code does not
626 initially work for you. It may help to enable device hotplugging
627 support. As of this writing the exact hardware interface is
628 strongly in flux, so no good recommendation can be made.
631 bool "kernel crash dumps (EXPERIMENTAL)"
632 depends on SUPERH32 && EXPERIMENTAL
634 Generate crash dump after being started by kexec.
635 This should be normally only set in special crash dump kernels
636 which are loaded in the main kernel with kexec-tools into
637 a specially reserved region and then later executed after
638 a crash by kdump/kexec. The crash dump kernel must be compiled
639 to a memory address not used by the main kernel using
642 For more details see Documentation/kdump/kdump.txt
645 bool "kexec jump (EXPERIMENTAL)"
646 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
648 Jump between original kernel and kexeced kernel and invoke
652 bool "Enable seccomp to safely compute untrusted bytecode"
655 This kernel feature is useful for number crunching applications
656 that may need to compute untrusted bytecode during their
657 execution. By using pipes or other transports made available to
658 the process as file descriptors supporting the read/write
659 syscalls, it's possible to isolate those applications in
660 their own address space using seccomp. Once seccomp is
661 enabled via prctl, it cannot be disabled and the task is only
662 allowed to execute a few safe syscalls defined by each seccomp
668 bool "Symmetric multi-processing support"
669 depends on SYS_SUPPORTS_SMP
670 select USE_GENERIC_SMP_HELPERS
672 This enables support for systems with more than one CPU. If you have
673 a system with only one CPU, like most personal computers, say N. If
674 you have a system with more than one CPU, say Y.
676 If you say N here, the kernel will run on single and multiprocessor
677 machines, but will use only one CPU of a multiprocessor machine. If
678 you say Y here, the kernel will run on many, but not all,
679 singleprocessor machines. On a singleprocessor machine, the kernel
680 will run faster if you say N here.
682 People using multiprocessor machines who say Y here should also say
683 Y to "Enhanced Real Time Clock Support", below.
685 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
686 available at <http://www.tldp.org/docs.html#howto>.
688 If you don't know what to do here, say N.
691 int "Maximum number of CPUs (2-32)"
694 default "4" if CPU_SUBTYPE_SHX3
697 This allows you to specify the maximum number of CPUs which this
698 kernel will support. The maximum supported value is 32 and the
699 minimum value which makes sense is 2.
701 This is purely to save memory - each supported CPU adds
702 approximately eight kilobytes to the kernel image.
704 source "kernel/Kconfig.preempt"
708 depends on !SMP && SUPERH32
710 This enables support for gUSA (general UserSpace Atomicity).
711 This is the default implementation for both UP and non-ll/sc
712 CPUs, and is used by the libc, amongst others.
714 For additional information, design information can be found
715 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
717 This should only be disabled for special cases where alternate
718 atomicity implementations exist.
721 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
722 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
724 Enabling this option will allow the kernel to implement some
725 atomic operations using a software implementation of load-locked/
726 store-conditional (LLSC). On machines which do not have hardware
727 LLSC, this should be more efficient than the other alternative of
728 disabling interrupts around the atomic sequence.
732 depends on SUPERH32 && !SH_DREAMCAST && !SH_HIGHLANDER && \
733 !SH_RTS7751R2D && !HD64461 && !SH_7724_SOLUTION_ENGINE
735 This enables support for sparse irqs. This is useful in general
736 as most CPUs have a fairly sparse array of IRQ vectors, which
737 the irq_desc then maps directly on to. Systems with a high
738 number of off-chip IRQs will want to treat this as
739 experimental until they have been independently verified.
741 If you don't know what to do here, say N.
747 config ZERO_PAGE_OFFSET
749 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
750 SH_7751_SOLUTION_ENGINE
751 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
752 default "0x00002000" if PAGE_SIZE_8KB
755 This sets the default offset of zero page.
757 config BOOT_LINK_OFFSET
759 default "0x00210000" if SH_SHMIN
760 default "0x00400000" if SH_CAYMAN
761 default "0x00810000" if SH_7780_SOLUTION_ENGINE
762 default "0x009e0000" if SH_TITAN
763 default "0x01800000" if SH_SDK7780
764 default "0x02000000" if SH_EDOSK7760
767 This option allows you to set the link address offset of the zImage.
768 This can be useful if you are on a board which has a small amount of
773 default "0x00001000" if PAGE_SIZE_4KB
774 default "0x00002000" if PAGE_SIZE_8KB
775 default "0x00004000" if PAGE_SIZE_16KB
776 default "0x00010000" if PAGE_SIZE_64KB
780 prompt "Kernel command line"
782 default CMDLINE_OVERWRITE
784 Setting this option allows the kernel command line arguments
787 config CMDLINE_OVERWRITE
788 bool "Overwrite bootloader kernel arguments"
790 Given string will overwrite any arguments passed in by
793 config CMDLINE_EXTEND
794 bool "Extend bootloader kernel arguments"
796 Given string will be concatenated with arguments passed in
802 string "Kernel command line arguments string"
803 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
804 default "console=ttySC1,115200"
811 tristate "SuperHyway Bus support"
812 depends on CPU_SUBTYPE_SH4_202
815 bool "Maple Bus support"
816 depends on SH_DREAMCAST
818 The Maple Bus is SEGA's serial communication bus for peripherals
819 on the Dreamcast. Without this bus support you won't be able to
820 get your Dreamcast keyboard etc to work, so most users
821 probably want to say 'Y' here, unless you are only using the
822 Dreamcast with a serial line terminal or a remote network
827 depends on SYS_SUPPORTS_PCI
829 Find out whether you have a PCI motherboard. PCI is the name of a
830 bus system, i.e. the way the CPU talks to the other stuff inside
831 your box. If you have PCI, say Y, otherwise N.
833 source "drivers/pci/pcie/Kconfig"
835 source "drivers/pci/Kconfig"
837 source "drivers/pcmcia/Kconfig"
839 source "drivers/pci/hotplug/Kconfig"
843 menu "Executable file formats"
845 source "fs/Kconfig.binfmt"
849 menu "Power management options (EXPERIMENTAL)"
850 depends on EXPERIMENTAL
852 source "kernel/power/Kconfig"
854 source "drivers/cpuidle/Kconfig"
860 source "drivers/Kconfig"
864 source "arch/sh/Kconfig.debug"
866 source "security/Kconfig"
868 source "crypto/Kconfig"