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 if CPU_SH4A
46 select ARCH_HIBERNATION_POSSIBLE if MMU
49 def_bool ARCH = "sh64"
53 default "arch/sh/configs/shx3_defconfig" if SUPERH32
54 default "arch/sh/configs/cayman_defconfig" if SUPERH64
56 config RWSEM_GENERIC_SPINLOCK
59 config RWSEM_XCHGADD_ALGORITHM
64 depends on BUG && SUPERH32
70 config GENERIC_FIND_NEXT_BIT
73 config GENERIC_HWEIGHT
76 config GENERIC_HARDIRQS
79 config GENERIC_HARDIRQS_NO__DO_IRQ
82 config GENERIC_IRQ_PROBE
91 config GENERIC_CALIBRATE_DELAY
100 config GENERIC_CLOCKEVENTS
103 config GENERIC_CLOCKEVENTS_BROADCAST
106 config GENERIC_CMOS_UPDATE
108 depends on SH_SH03 || SH_DREAMCAST
110 config GENERIC_LOCKBREAK
112 depends on SMP && PREEMPT
114 config SYS_SUPPORTS_PM
118 config ARCH_SUSPEND_POSSIBLE
121 config ARCH_HIBERNATION_POSSIBLE
124 config SYS_SUPPORTS_APM_EMULATION
126 select ARCH_SUSPEND_POSSIBLE
128 config SYS_SUPPORTS_HUGETLBFS
131 config SYS_SUPPORTS_SMP
134 config SYS_SUPPORTS_NUMA
137 config SYS_SUPPORTS_PCI
140 config SYS_SUPPORTS_CMT
143 config SYS_SUPPORTS_MTU2
146 config SYS_SUPPORTS_TMU
149 config STACKTRACE_SUPPORT
152 config LOCKDEP_SUPPORT
155 config HAVE_LATENCYTOP_SUPPORT
159 config ARCH_HAS_ILOG2_U32
162 config ARCH_HAS_ILOG2_U64
165 config ARCH_NO_VIRT_TO_BUS
168 config ARCH_HAS_DEFAULT_IDLE
171 config ARCH_HAS_CPU_IDLE_WAIT
180 config DMA_NONCOHERENT
181 def_bool !DMA_COHERENT
183 source "init/Kconfig"
185 source "kernel/Kconfig.freezer"
201 select CPU_HAS_INTEVT
203 select SYS_SUPPORTS_TMU
207 select CPU_HAS_INTEVT
209 select CPU_HAS_FPU if !CPU_SH4AL_DSP
210 select SYS_SUPPORTS_TMU
211 select SYS_SUPPORTS_HUGETLBFS if MMU
225 select SYS_SUPPORTS_TMU
226 select SYS_SUPPORTS_HUGETLBFS if MMU
237 select ARCH_SUSPEND_POSSIBLE
244 prompt "Processor sub-type selection"
250 # SH-2 Processor Support
252 config CPU_SUBTYPE_SH7619
253 bool "Support SH7619 processor"
255 select SYS_SUPPORTS_CMT
257 # SH-2A Processor Support
259 config CPU_SUBTYPE_SH7201
260 bool "Support SH7201 processor"
263 select SYS_SUPPORTS_MTU2
265 config CPU_SUBTYPE_SH7203
266 bool "Support SH7203 processor"
269 select SYS_SUPPORTS_CMT
270 select SYS_SUPPORTS_MTU2
272 config CPU_SUBTYPE_SH7206
273 bool "Support SH7206 processor"
275 select SYS_SUPPORTS_CMT
276 select SYS_SUPPORTS_MTU2
278 config CPU_SUBTYPE_SH7263
279 bool "Support SH7263 processor"
282 select SYS_SUPPORTS_CMT
283 select SYS_SUPPORTS_MTU2
285 config CPU_SUBTYPE_MXG
286 bool "Support MX-G processor"
288 select SYS_SUPPORTS_MTU2
290 Select MX-G if running on an R8A03022BG part.
292 # SH-3 Processor Support
294 config CPU_SUBTYPE_SH7705
295 bool "Support SH7705 processor"
298 config CPU_SUBTYPE_SH7706
299 bool "Support SH7706 processor"
302 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
304 config CPU_SUBTYPE_SH7707
305 bool "Support SH7707 processor"
308 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
310 config CPU_SUBTYPE_SH7708
311 bool "Support SH7708 processor"
314 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
315 if you have a 100 Mhz SH-3 HD6417708R CPU.
317 config CPU_SUBTYPE_SH7709
318 bool "Support SH7709 processor"
321 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
323 config CPU_SUBTYPE_SH7710
324 bool "Support SH7710 processor"
328 Select SH7710 if you have a SH3-DSP SH7710 CPU.
330 config CPU_SUBTYPE_SH7712
331 bool "Support SH7712 processor"
335 Select SH7712 if you have a SH3-DSP SH7712 CPU.
337 config CPU_SUBTYPE_SH7720
338 bool "Support SH7720 processor"
341 select SYS_SUPPORTS_CMT
343 Select SH7720 if you have a SH3-DSP SH7720 CPU.
345 config CPU_SUBTYPE_SH7721
346 bool "Support SH7721 processor"
349 select SYS_SUPPORTS_CMT
351 Select SH7721 if you have a SH3-DSP SH7721 CPU.
353 # SH-4 Processor Support
355 config CPU_SUBTYPE_SH7750
356 bool "Support SH7750 processor"
359 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
361 config CPU_SUBTYPE_SH7091
362 bool "Support SH7091 processor"
365 Select SH7091 if you have an SH-4 based Sega device (such as
366 the Dreamcast, Naomi, and Naomi 2).
368 config CPU_SUBTYPE_SH7750R
369 bool "Support SH7750R processor"
372 config CPU_SUBTYPE_SH7750S
373 bool "Support SH7750S processor"
376 config CPU_SUBTYPE_SH7751
377 bool "Support SH7751 processor"
380 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
381 or if you have a HD6417751R CPU.
383 config CPU_SUBTYPE_SH7751R
384 bool "Support SH7751R processor"
387 config CPU_SUBTYPE_SH7760
388 bool "Support SH7760 processor"
391 config CPU_SUBTYPE_SH4_202
392 bool "Support SH4-202 processor"
395 # SH-4A Processor Support
397 config CPU_SUBTYPE_SH7723
398 bool "Support SH7723 processor"
402 select ARCH_SPARSEMEM_ENABLE
403 select SYS_SUPPORTS_CMT
405 Select SH7723 if you have an SH-MobileR2 CPU.
407 config CPU_SUBTYPE_SH7724
408 bool "Support SH7724 processor"
412 select ARCH_SPARSEMEM_ENABLE
413 select SYS_SUPPORTS_CMT
415 Select SH7724 if you have an SH-MobileR2R CPU.
417 config CPU_SUBTYPE_SH7757
418 bool "Support SH7757 processor"
422 Select SH7757 if you have a SH4A SH7757 CPU.
424 config CPU_SUBTYPE_SH7763
425 bool "Support SH7763 processor"
428 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
430 config CPU_SUBTYPE_SH7770
431 bool "Support SH7770 processor"
434 config CPU_SUBTYPE_SH7780
435 bool "Support SH7780 processor"
438 config CPU_SUBTYPE_SH7785
439 bool "Support SH7785 processor"
442 select ARCH_SPARSEMEM_ENABLE
443 select SYS_SUPPORTS_NUMA
445 config CPU_SUBTYPE_SH7786
446 bool "Support SH7786 processor"
449 select CPU_HAS_PTEAEX
450 select ARCH_SPARSEMEM_ENABLE
451 select SYS_SUPPORTS_NUMA
452 select SYS_SUPPORTS_SMP
453 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
455 config CPU_SUBTYPE_SHX3
456 bool "Support SH-X3 processor"
459 select ARCH_SPARSEMEM_ENABLE
460 select SYS_SUPPORTS_NUMA
461 select SYS_SUPPORTS_SMP
462 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
464 # SH4AL-DSP Processor Support
466 config CPU_SUBTYPE_SH7343
467 bool "Support SH7343 processor"
470 select SYS_SUPPORTS_CMT
472 config CPU_SUBTYPE_SH7722
473 bool "Support SH7722 processor"
477 select ARCH_SPARSEMEM_ENABLE
478 select SYS_SUPPORTS_NUMA
479 select SYS_SUPPORTS_CMT
481 config CPU_SUBTYPE_SH7366
482 bool "Support SH7366 processor"
486 select ARCH_SPARSEMEM_ENABLE
487 select SYS_SUPPORTS_NUMA
488 select SYS_SUPPORTS_CMT
497 prompt "Processor sub-type selection"
499 # SH-5 Processor Support
501 config CPU_SUBTYPE_SH5_101
502 bool "Support SH5-101 processor"
505 config CPU_SUBTYPE_SH5_103
506 bool "Support SH5-103 processor"
513 source "arch/sh/mm/Kconfig"
515 source "arch/sh/Kconfig.cpu"
517 source "arch/sh/boards/Kconfig"
519 menu "Timer and clock configuration"
522 bool "TMU timer driver"
523 depends on SYS_SUPPORTS_TMU
526 This enables the build of the TMU timer driver.
529 bool "CMT timer driver"
530 depends on SYS_SUPPORTS_CMT
533 This enables build of the CMT timer driver.
536 bool "MTU2 timer driver"
537 depends on SYS_SUPPORTS_MTU2
540 This enables build of the MTU2 timer driver.
543 int "Peripheral clock frequency (in Hz)"
544 default "27000000" if CPU_SUBTYPE_SH7343
545 default "31250000" if CPU_SUBTYPE_SH7619
546 default "32000000" if CPU_SUBTYPE_SH7722
547 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
548 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
549 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
550 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
551 CPU_SUBTYPE_SH7786 || CPU_SUBTYPE_SH7724
552 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
553 default "66000000" if CPU_SUBTYPE_SH4_202
556 This option is used to specify the peripheral clock frequency.
557 This is necessary for determining the reference clock value on
558 platforms lacking an RTC.
563 config SH_CLK_CPG_LEGACY
564 depends on SH_CLK_CPG
565 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE
568 int "CPU Mode Pin Setting"
570 default 6 if CPU_SUBTYPE_SH7206
571 default 5 if CPU_SUBTYPE_SH7619
574 MD2 - MD0 pin setting.
576 source "kernel/time/Kconfig"
580 menu "CPU Frequency scaling"
582 source "drivers/cpufreq/Kconfig"
585 tristate "SuperH CPU Frequency driver"
587 select CPU_FREQ_TABLE
589 This adds the cpufreq driver for SuperH. Any CPU that supports
590 clock rate rounding through the clock framework can use this
591 driver. While it will make the kernel slightly larger, this is
592 harmless for CPUs that don't support rate rounding. The driver
593 will also generate a notice in the boot log before disabling
594 itself if the CPU in question is not capable of rate rounding.
596 For details, take a look at <file:Documentation/cpu-freq>.
602 source "arch/sh/drivers/Kconfig"
606 menu "Kernel features"
608 source kernel/Kconfig.hz
611 bool "kexec system call (EXPERIMENTAL)"
612 depends on SUPERH32 && EXPERIMENTAL && MMU
614 kexec is a system call that implements the ability to shutdown your
615 current kernel, and to start another kernel. It is like a reboot
616 but it is independent of the system firmware. And like a reboot
617 you can start any kernel with it, not just Linux.
619 The name comes from the similarity to the exec system call.
621 It is an ongoing process to be certain the hardware in a machine
622 is properly shutdown, so do not be surprised if this code does not
623 initially work for you. It may help to enable device hotplugging
624 support. As of this writing the exact hardware interface is
625 strongly in flux, so no good recommendation can be made.
628 bool "kernel crash dumps (EXPERIMENTAL)"
629 depends on SUPERH32 && EXPERIMENTAL
631 Generate crash dump after being started by kexec.
632 This should be normally only set in special crash dump kernels
633 which are loaded in the main kernel with kexec-tools into
634 a specially reserved region and then later executed after
635 a crash by kdump/kexec. The crash dump kernel must be compiled
636 to a memory address not used by the main kernel using
639 For more details see Documentation/kdump/kdump.txt
642 bool "kexec jump (EXPERIMENTAL)"
643 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
645 Jump between original kernel and kexeced kernel and invoke
649 bool "Enable seccomp to safely compute untrusted bytecode"
652 This kernel feature is useful for number crunching applications
653 that may need to compute untrusted bytecode during their
654 execution. By using pipes or other transports made available to
655 the process as file descriptors supporting the read/write
656 syscalls, it's possible to isolate those applications in
657 their own address space using seccomp. Once seccomp is
658 enabled via prctl, it cannot be disabled and the task is only
659 allowed to execute a few safe syscalls defined by each seccomp
665 bool "Symmetric multi-processing support"
666 depends on SYS_SUPPORTS_SMP
667 select USE_GENERIC_SMP_HELPERS
669 This enables support for systems with more than one CPU. If you have
670 a system with only one CPU, like most personal computers, say N. If
671 you have a system with more than one CPU, say Y.
673 If you say N here, the kernel will run on single and multiprocessor
674 machines, but will use only one CPU of a multiprocessor machine. If
675 you say Y here, the kernel will run on many, but not all,
676 singleprocessor machines. On a singleprocessor machine, the kernel
677 will run faster if you say N here.
679 People using multiprocessor machines who say Y here should also say
680 Y to "Enhanced Real Time Clock Support", below.
682 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
683 available at <http://www.tldp.org/docs.html#howto>.
685 If you don't know what to do here, say N.
688 int "Maximum number of CPUs (2-32)"
691 default "4" if CPU_SUBTYPE_SHX3
694 This allows you to specify the maximum number of CPUs which this
695 kernel will support. The maximum supported value is 32 and the
696 minimum value which makes sense is 2.
698 This is purely to save memory - each supported CPU adds
699 approximately eight kilobytes to the kernel image.
701 source "kernel/Kconfig.preempt"
705 depends on !SMP && SUPERH32
707 This enables support for gUSA (general UserSpace Atomicity).
708 This is the default implementation for both UP and non-ll/sc
709 CPUs, and is used by the libc, amongst others.
711 For additional information, design information can be found
712 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
714 This should only be disabled for special cases where alternate
715 atomicity implementations exist.
718 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
719 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
721 Enabling this option will allow the kernel to implement some
722 atomic operations using a software implementation of load-locked/
723 store-conditional (LLSC). On machines which do not have hardware
724 LLSC, this should be more efficient than the other alternative of
725 disabling interrupts around the atomic sequence.
728 bool "Support sparse irq numbering"
729 depends on EXPERIMENTAL
731 This enables support for sparse irqs. This is useful in general
732 as most CPUs have a fairly sparse array of IRQ vectors, which
733 the irq_desc then maps directly on to. Systems with a high
734 number of off-chip IRQs will want to treat this as
735 experimental until they have been independently verified.
737 If you don't know what to do here, say N.
743 config ZERO_PAGE_OFFSET
745 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
746 SH_7751_SOLUTION_ENGINE
747 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
748 default "0x00002000" if PAGE_SIZE_8KB
751 This sets the default offset of zero page.
753 config BOOT_LINK_OFFSET
755 default "0x00210000" if SH_SHMIN
756 default "0x00400000" if SH_CAYMAN
757 default "0x00810000" if SH_7780_SOLUTION_ENGINE
758 default "0x009e0000" if SH_TITAN
759 default "0x01800000" if SH_SDK7780
760 default "0x02000000" if SH_EDOSK7760
763 This option allows you to set the link address offset of the zImage.
764 This can be useful if you are on a board which has a small amount of
769 default "0x00001000" if PAGE_SIZE_4KB
770 default "0x00002000" if PAGE_SIZE_8KB
771 default "0x00004000" if PAGE_SIZE_16KB
772 default "0x00010000" if PAGE_SIZE_64KB
776 prompt "Kernel command line"
778 default CMDLINE_OVERWRITE
780 Setting this option allows the kernel command line arguments
783 config CMDLINE_OVERWRITE
784 bool "Overwrite bootloader kernel arguments"
786 Given string will overwrite any arguments passed in by
789 config CMDLINE_EXTEND
790 bool "Extend bootloader kernel arguments"
792 Given string will be concatenated with arguments passed in
798 string "Kernel command line arguments string"
799 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
800 default "console=ttySC1,115200"
807 tristate "SuperHyway Bus support"
808 depends on CPU_SUBTYPE_SH4_202
811 bool "Maple Bus support"
812 depends on SH_DREAMCAST
814 The Maple Bus is SEGA's serial communication bus for peripherals
815 on the Dreamcast. Without this bus support you won't be able to
816 get your Dreamcast keyboard etc to work, so most users
817 probably want to say 'Y' here, unless you are only using the
818 Dreamcast with a serial line terminal or a remote network
823 depends on SYS_SUPPORTS_PCI
825 Find out whether you have a PCI motherboard. PCI is the name of a
826 bus system, i.e. the way the CPU talks to the other stuff inside
827 your box. If you have PCI, say Y, otherwise N.
829 source "drivers/pci/pcie/Kconfig"
831 source "drivers/pci/Kconfig"
833 source "drivers/pcmcia/Kconfig"
835 source "drivers/pci/hotplug/Kconfig"
839 menu "Executable file formats"
841 source "fs/Kconfig.binfmt"
845 menu "Power management options (EXPERIMENTAL)"
846 depends on EXPERIMENTAL
848 source "kernel/power/Kconfig"
850 source "drivers/cpuidle/Kconfig"
856 source "drivers/Kconfig"
860 source "arch/sh/Kconfig.debug"
862 source "security/Kconfig"
864 source "crypto/Kconfig"