2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux/SuperH Kernel Configuration"
12 select HAVE_IDE if HAS_IOPORT
15 select HAVE_GENERIC_DMA_COHERENT
16 select HAVE_ARCH_TRACEHOOK
17 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_KERNEL_LZO
26 select HAVE_SYSCALL_TRACEPOINTS
28 select GENERIC_ATOMIC64
30 The SuperH is a RISC processor targeted for use in embedded systems
31 and consumer electronics; it was also used in the Sega Dreamcast
32 gaming console. The SuperH port has a home page at
33 <http://www.linux-sh.org/>.
38 select HAVE_KRETPROBES
39 select HAVE_IOREMAP_PROT if MMU && !X2TLB
40 select HAVE_FUNCTION_TRACER
41 select HAVE_FTRACE_MCOUNT_RECORD
42 select HAVE_DYNAMIC_FTRACE
43 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
44 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
45 select HAVE_FUNCTION_GRAPH_TRACER
47 select HAVE_HW_BREAKPOINT
48 select HAVE_MIXED_BREAKPOINTS_REGS
49 select PERF_EVENTS if HAVE_HW_BREAKPOINT
50 select ARCH_HIBERNATION_POSSIBLE if MMU
53 def_bool ARCH = "sh64"
57 default "arch/sh/configs/shx3_defconfig" if SUPERH32
58 default "arch/sh/configs/cayman_defconfig" if SUPERH64
60 config RWSEM_GENERIC_SPINLOCK
63 config RWSEM_XCHGADD_ALGORITHM
68 depends on BUG && SUPERH32
74 config GENERIC_FIND_NEXT_BIT
77 config GENERIC_HWEIGHT
80 config GENERIC_HARDIRQS
83 config GENERIC_HARDIRQS_NO__DO_IRQ
96 config GENERIC_CALIBRATE_DELAY
102 config GENERIC_CLOCKEVENTS
105 config GENERIC_CLOCKEVENTS_BROADCAST
108 config GENERIC_CMOS_UPDATE
110 depends on SH_SH03 || SH_DREAMCAST
112 config GENERIC_LOCKBREAK
114 depends on SMP && PREEMPT
116 config SYS_SUPPORTS_PM
120 config ARCH_SUSPEND_POSSIBLE
123 config ARCH_HIBERNATION_POSSIBLE
126 config SYS_SUPPORTS_APM_EMULATION
128 select ARCH_SUSPEND_POSSIBLE
130 config SYS_SUPPORTS_HUGETLBFS
133 config SYS_SUPPORTS_SMP
136 config SYS_SUPPORTS_NUMA
139 config SYS_SUPPORTS_PCI
142 config SYS_SUPPORTS_CMT
145 config SYS_SUPPORTS_MTU2
148 config SYS_SUPPORTS_TMU
151 config STACKTRACE_SUPPORT
154 config LOCKDEP_SUPPORT
157 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
184 config DMA_NONCOHERENT
185 def_bool !DMA_COHERENT
187 config NEED_DMA_MAP_STATE
188 def_bool DMA_NONCOHERENT
190 config NEED_SG_DMA_LENGTH
193 source "init/Kconfig"
195 source "kernel/Kconfig.freezer"
211 select CPU_HAS_INTEVT
213 select SYS_SUPPORTS_TMU
217 select CPU_HAS_INTEVT
219 select CPU_HAS_FPU if !CPU_SH4AL_DSP
220 select SYS_SUPPORTS_TMU
221 select SYS_SUPPORTS_HUGETLBFS if MMU
235 select SYS_SUPPORTS_TMU
236 select SYS_SUPPORTS_HUGETLBFS if MMU
244 select SYS_SUPPORTS_SMP
245 select SYS_SUPPORTS_NUMA
249 select ARCH_SUSPEND_POSSIBLE
254 depends on CPU_SH4 || CPU_SH4A
261 prompt "Processor sub-type selection"
267 # SH-2 Processor Support
269 config CPU_SUBTYPE_SH7619
270 bool "Support SH7619 processor"
272 select SYS_SUPPORTS_CMT
274 # SH-2A Processor Support
276 config CPU_SUBTYPE_SH7201
277 bool "Support SH7201 processor"
280 select SYS_SUPPORTS_MTU2
282 config CPU_SUBTYPE_SH7203
283 bool "Support SH7203 processor"
286 select SYS_SUPPORTS_CMT
287 select SYS_SUPPORTS_MTU2
289 config CPU_SUBTYPE_SH7206
290 bool "Support SH7206 processor"
292 select SYS_SUPPORTS_CMT
293 select SYS_SUPPORTS_MTU2
295 config CPU_SUBTYPE_SH7263
296 bool "Support SH7263 processor"
299 select SYS_SUPPORTS_CMT
300 select SYS_SUPPORTS_MTU2
302 config CPU_SUBTYPE_MXG
303 bool "Support MX-G processor"
305 select SYS_SUPPORTS_MTU2
307 Select MX-G if running on an R8A03022BG part.
309 # SH-3 Processor Support
311 config CPU_SUBTYPE_SH7705
312 bool "Support SH7705 processor"
315 config CPU_SUBTYPE_SH7706
316 bool "Support SH7706 processor"
319 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
321 config CPU_SUBTYPE_SH7707
322 bool "Support SH7707 processor"
325 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
327 config CPU_SUBTYPE_SH7708
328 bool "Support SH7708 processor"
331 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
332 if you have a 100 Mhz SH-3 HD6417708R CPU.
334 config CPU_SUBTYPE_SH7709
335 bool "Support SH7709 processor"
338 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
340 config CPU_SUBTYPE_SH7710
341 bool "Support SH7710 processor"
345 Select SH7710 if you have a SH3-DSP SH7710 CPU.
347 config CPU_SUBTYPE_SH7712
348 bool "Support SH7712 processor"
352 Select SH7712 if you have a SH3-DSP SH7712 CPU.
354 config CPU_SUBTYPE_SH7720
355 bool "Support SH7720 processor"
358 select SYS_SUPPORTS_CMT
360 Select SH7720 if you have a SH3-DSP SH7720 CPU.
362 config CPU_SUBTYPE_SH7721
363 bool "Support SH7721 processor"
366 select SYS_SUPPORTS_CMT
368 Select SH7721 if you have a SH3-DSP SH7721 CPU.
370 # SH-4 Processor Support
372 config CPU_SUBTYPE_SH7750
373 bool "Support SH7750 processor"
376 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
378 config CPU_SUBTYPE_SH7091
379 bool "Support SH7091 processor"
382 Select SH7091 if you have an SH-4 based Sega device (such as
383 the Dreamcast, Naomi, and Naomi 2).
385 config CPU_SUBTYPE_SH7750R
386 bool "Support SH7750R processor"
389 config CPU_SUBTYPE_SH7750S
390 bool "Support SH7750S processor"
393 config CPU_SUBTYPE_SH7751
394 bool "Support SH7751 processor"
397 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
398 or if you have a HD6417751R CPU.
400 config CPU_SUBTYPE_SH7751R
401 bool "Support SH7751R processor"
404 config CPU_SUBTYPE_SH7760
405 bool "Support SH7760 processor"
408 config CPU_SUBTYPE_SH4_202
409 bool "Support SH4-202 processor"
412 # SH-4A Processor Support
414 config CPU_SUBTYPE_SH7723
415 bool "Support SH7723 processor"
419 select ARCH_SPARSEMEM_ENABLE
420 select SYS_SUPPORTS_CMT
422 Select SH7723 if you have an SH-MobileR2 CPU.
424 config CPU_SUBTYPE_SH7724
425 bool "Support SH7724 processor"
429 select ARCH_SPARSEMEM_ENABLE
430 select SYS_SUPPORTS_CMT
432 Select SH7724 if you have an SH-MobileR2R CPU.
434 config CPU_SUBTYPE_SH7757
435 bool "Support SH7757 processor"
439 Select SH7757 if you have a SH4A SH7757 CPU.
441 config CPU_SUBTYPE_SH7763
442 bool "Support SH7763 processor"
445 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
447 config CPU_SUBTYPE_SH7770
448 bool "Support SH7770 processor"
451 config CPU_SUBTYPE_SH7780
452 bool "Support SH7780 processor"
455 config CPU_SUBTYPE_SH7785
456 bool "Support SH7785 processor"
459 select ARCH_SPARSEMEM_ENABLE
460 select SYS_SUPPORTS_NUMA
462 config CPU_SUBTYPE_SH7786
463 bool "Support SH7786 processor"
466 select CPU_HAS_PTEAEX
467 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
469 config CPU_SUBTYPE_SHX3
470 bool "Support SH-X3 processor"
473 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
475 # SH4AL-DSP Processor Support
477 config CPU_SUBTYPE_SH7343
478 bool "Support SH7343 processor"
481 select SYS_SUPPORTS_CMT
483 config CPU_SUBTYPE_SH7722
484 bool "Support SH7722 processor"
488 select ARCH_SPARSEMEM_ENABLE
489 select SYS_SUPPORTS_NUMA
490 select SYS_SUPPORTS_CMT
492 config CPU_SUBTYPE_SH7366
493 bool "Support SH7366 processor"
497 select ARCH_SPARSEMEM_ENABLE
498 select SYS_SUPPORTS_NUMA
499 select SYS_SUPPORTS_CMT
508 prompt "Processor sub-type selection"
510 # SH-5 Processor Support
512 config CPU_SUBTYPE_SH5_101
513 bool "Support SH5-101 processor"
516 config CPU_SUBTYPE_SH5_103
517 bool "Support SH5-103 processor"
524 source "arch/sh/mm/Kconfig"
526 source "arch/sh/Kconfig.cpu"
528 source "arch/sh/boards/Kconfig"
530 menu "Timer and clock configuration"
533 bool "TMU timer driver"
534 depends on SYS_SUPPORTS_TMU
537 This enables the build of the TMU timer driver.
540 bool "CMT timer driver"
541 depends on SYS_SUPPORTS_CMT
544 This enables build of the CMT timer driver.
547 bool "MTU2 timer driver"
548 depends on SYS_SUPPORTS_MTU2
551 This enables build of the MTU2 timer driver.
554 int "Peripheral clock frequency (in Hz)"
555 depends on SH_CLK_CPG_LEGACY
556 default "31250000" if CPU_SUBTYPE_SH7619
557 default "33333333" if CPU_SUBTYPE_SH7770 || \
558 CPU_SUBTYPE_SH7760 || \
559 CPU_SUBTYPE_SH7705 || \
560 CPU_SUBTYPE_SH7203 || \
561 CPU_SUBTYPE_SH7206 || \
562 CPU_SUBTYPE_SH7263 || \
564 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
565 default "66000000" if CPU_SUBTYPE_SH4_202
568 This option is used to specify the peripheral clock frequency.
569 This is necessary for determining the reference clock value on
570 platforms lacking an RTC.
575 config SH_CLK_CPG_LEGACY
576 depends on SH_CLK_CPG
577 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
581 int "CPU Mode Pin Setting"
583 default 6 if CPU_SUBTYPE_SH7206
584 default 5 if CPU_SUBTYPE_SH7619
587 MD2 - MD0 pin setting.
589 source "kernel/time/Kconfig"
593 menu "CPU Frequency scaling"
595 source "drivers/cpufreq/Kconfig"
598 tristate "SuperH CPU Frequency driver"
600 select CPU_FREQ_TABLE
602 This adds the cpufreq driver for SuperH. Any CPU that supports
603 clock rate rounding through the clock framework can use this
604 driver. While it will make the kernel slightly larger, this is
605 harmless for CPUs that don't support rate rounding. The driver
606 will also generate a notice in the boot log before disabling
607 itself if the CPU in question is not capable of rate rounding.
609 For details, take a look at <file:Documentation/cpu-freq>.
615 source "arch/sh/drivers/Kconfig"
619 menu "Kernel features"
621 source kernel/Kconfig.hz
624 bool "kexec system call (EXPERIMENTAL)"
625 depends on SUPERH32 && EXPERIMENTAL && MMU
627 kexec is a system call that implements the ability to shutdown your
628 current kernel, and to start another kernel. It is like a reboot
629 but it is independent of the system firmware. And like a reboot
630 you can start any kernel with it, not just Linux.
632 The name comes from the similarity to the exec system call.
634 It is an ongoing process to be certain the hardware in a machine
635 is properly shutdown, so do not be surprised if this code does not
636 initially work for you. It may help to enable device hotplugging
637 support. As of this writing the exact hardware interface is
638 strongly in flux, so no good recommendation can be made.
641 bool "kernel crash dumps (EXPERIMENTAL)"
642 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
644 Generate crash dump after being started by kexec.
645 This should be normally only set in special crash dump kernels
646 which are loaded in the main kernel with kexec-tools into
647 a specially reserved region and then later executed after
648 a crash by kdump/kexec. The crash dump kernel must be compiled
649 to a memory address not used by the main kernel using
652 For more details see Documentation/kdump/kdump.txt
655 bool "kexec jump (EXPERIMENTAL)"
656 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
658 Jump between original kernel and kexeced kernel and invoke
662 bool "Enable seccomp to safely compute untrusted bytecode"
665 This kernel feature is useful for number crunching applications
666 that may need to compute untrusted bytecode during their
667 execution. By using pipes or other transports made available to
668 the process as file descriptors supporting the read/write
669 syscalls, it's possible to isolate those applications in
670 their own address space using seccomp. Once seccomp is
671 enabled via prctl, it cannot be disabled and the task is only
672 allowed to execute a few safe syscalls defined by each seccomp
678 bool "Symmetric multi-processing support"
679 depends on SYS_SUPPORTS_SMP
680 select USE_GENERIC_SMP_HELPERS
682 This enables support for systems with more than one CPU. If you have
683 a system with only one CPU, like most personal computers, say N. If
684 you have a system with more than one CPU, say Y.
686 If you say N here, the kernel will run on single and multiprocessor
687 machines, but will use only one CPU of a multiprocessor machine. If
688 you say Y here, the kernel will run on many, but not all,
689 singleprocessor machines. On a singleprocessor machine, the kernel
690 will run faster if you say N here.
692 People using multiprocessor machines who say Y here should also say
693 Y to "Enhanced Real Time Clock Support", below.
695 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
696 available at <http://www.tldp.org/docs.html#howto>.
698 If you don't know what to do here, say N.
701 int "Maximum number of CPUs (2-32)"
704 default "4" if CPU_SUBTYPE_SHX3
707 This allows you to specify the maximum number of CPUs which this
708 kernel will support. The maximum supported value is 32 and the
709 minimum value which makes sense is 2.
711 This is purely to save memory - each supported CPU adds
712 approximately eight kilobytes to the kernel image.
715 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
716 depends on SMP && HOTPLUG && EXPERIMENTAL
718 Say Y here to experiment with turning CPUs off and on. CPUs
719 can be controlled through /sys/devices/system/cpu.
721 source "kernel/Kconfig.preempt"
725 depends on !SMP && SUPERH32
727 This enables support for gUSA (general UserSpace Atomicity).
728 This is the default implementation for both UP and non-ll/sc
729 CPUs, and is used by the libc, amongst others.
731 For additional information, design information can be found
732 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
734 This should only be disabled for special cases where alternate
735 atomicity implementations exist.
738 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
739 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
741 Enabling this option will allow the kernel to implement some
742 atomic operations using a software implementation of load-locked/
743 store-conditional (LLSC). On machines which do not have hardware
744 LLSC, this should be more efficient than the other alternative of
745 disabling interrupts around the atomic sequence.
747 config HW_PERF_EVENTS
748 bool "Enable hardware performance counter support for perf events"
749 depends on PERF_EVENTS && CPU_HAS_PMU
752 Enable hardware performance counter support for perf events. If
753 disabled, perf events will use software events only.
755 source "drivers/sh/Kconfig"
761 config ZERO_PAGE_OFFSET
763 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
764 SH_7751_SOLUTION_ENGINE
765 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
766 default "0x00002000" if PAGE_SIZE_8KB
769 This sets the default offset of zero page.
771 config BOOT_LINK_OFFSET
773 default "0x00210000" if SH_SHMIN
774 default "0x00400000" if SH_CAYMAN
775 default "0x00810000" if SH_7780_SOLUTION_ENGINE
776 default "0x009e0000" if SH_TITAN
777 default "0x01800000" if SH_SDK7780
778 default "0x02000000" if SH_EDOSK7760
781 This option allows you to set the link address offset of the zImage.
782 This can be useful if you are on a board which has a small amount of
787 default "0x00001000" if PAGE_SIZE_4KB
788 default "0x00002000" if PAGE_SIZE_8KB
789 default "0x00004000" if PAGE_SIZE_16KB
790 default "0x00010000" if PAGE_SIZE_64KB
793 config ROMIMAGE_MMCIF
794 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
795 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
797 Say Y here to include experimental MMCIF loading code in
798 romImage. With this enabled it is possible to write the romImage
799 kernel image to an MMC card and boot the kernel straight from
800 the reset vector. At reset the processor Mask ROM will load the
801 first part of the romImage which in turn loads the rest the kernel
802 image to RAM using the MMCIF hardware block.
805 prompt "Kernel command line"
807 default CMDLINE_OVERWRITE
809 Setting this option allows the kernel command line arguments
812 config CMDLINE_OVERWRITE
813 bool "Overwrite bootloader kernel arguments"
815 Given string will overwrite any arguments passed in by
818 config CMDLINE_EXTEND
819 bool "Extend bootloader kernel arguments"
821 Given string will be concatenated with arguments passed in
827 string "Kernel command line arguments string"
828 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
829 default "console=ttySC1,115200"
836 tristate "SuperHyway Bus support"
837 depends on CPU_SUBTYPE_SH4_202
840 bool "Maple Bus support"
841 depends on SH_DREAMCAST
843 The Maple Bus is SEGA's serial communication bus for peripherals
844 on the Dreamcast. Without this bus support you won't be able to
845 get your Dreamcast keyboard etc to work, so most users
846 probably want to say 'Y' here, unless you are only using the
847 Dreamcast with a serial line terminal or a remote network
852 depends on SYS_SUPPORTS_PCI
855 Find out whether you have a PCI motherboard. PCI is the name of a
856 bus system, i.e. the way the CPU talks to the other stuff inside
857 your box. If you have PCI, say Y, otherwise N.
862 source "drivers/pci/pcie/Kconfig"
864 source "drivers/pci/Kconfig"
866 source "drivers/pcmcia/Kconfig"
868 source "drivers/pci/hotplug/Kconfig"
872 menu "Executable file formats"
874 source "fs/Kconfig.binfmt"
878 menu "Power management options (EXPERIMENTAL)"
879 depends on EXPERIMENTAL
881 source "kernel/power/Kconfig"
883 source "drivers/cpuidle/Kconfig"
889 source "drivers/Kconfig"
893 source "arch/sh/Kconfig.debug"
895 source "security/Kconfig"
897 source "crypto/Kconfig"
899 menuconfig VIRTUALIZATION
900 bool "Virtualization"
903 Say Y here to get to see options for using your Linux host to run other
904 operating systems inside virtual machines (guests).
905 This option alone does not add any kernel code.
907 If you say N, all options in this submenu will be skipped and disabled.
911 source drivers/virtio/Kconfig
913 endif # VIRTUALIZATION