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_ARCH_TRACEHOOK
17 select HAVE_DMA_API_DEBUG
19 select HAVE_PERF_EVENTS
20 select PERF_USE_VMALLOC
21 select HAVE_KERNEL_GZIP
22 select HAVE_KERNEL_BZIP2
23 select HAVE_KERNEL_LZMA
24 select HAVE_KERNEL_LZO
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_IOREMAP_PROT if MMU && !X2TLB
39 select HAVE_FUNCTION_TRACER
40 select HAVE_FTRACE_MCOUNT_RECORD
41 select HAVE_DYNAMIC_FTRACE
42 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
43 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
44 select HAVE_FUNCTION_GRAPH_TRACER
46 select HAVE_HW_BREAKPOINT
47 select HAVE_MIXED_BREAKPOINTS_REGS
48 select PERF_EVENTS if HAVE_HW_BREAKPOINT
49 select ARCH_HIBERNATION_POSSIBLE if MMU
52 def_bool ARCH = "sh64"
56 default "arch/sh/configs/shx3_defconfig" if SUPERH32
57 default "arch/sh/configs/cayman_defconfig" if SUPERH64
59 config RWSEM_GENERIC_SPINLOCK
62 config RWSEM_XCHGADD_ALGORITHM
67 depends on BUG && SUPERH32
73 config GENERIC_FIND_NEXT_BIT
76 config GENERIC_HWEIGHT
79 config GENERIC_HARDIRQS
82 config GENERIC_HARDIRQS_NO__DO_IRQ
95 config GENERIC_CALIBRATE_DELAY
104 config GENERIC_CLOCKEVENTS
107 config GENERIC_CLOCKEVENTS_BROADCAST
110 config GENERIC_CMOS_UPDATE
112 depends on SH_SH03 || SH_DREAMCAST
114 config GENERIC_LOCKBREAK
116 depends on SMP && PREEMPT
118 config SYS_SUPPORTS_PM
122 config ARCH_SUSPEND_POSSIBLE
125 config ARCH_HIBERNATION_POSSIBLE
128 config SYS_SUPPORTS_APM_EMULATION
130 select ARCH_SUSPEND_POSSIBLE
132 config SYS_SUPPORTS_HUGETLBFS
135 config SYS_SUPPORTS_SMP
138 config SYS_SUPPORTS_NUMA
141 config SYS_SUPPORTS_PCI
144 config SYS_SUPPORTS_CMT
147 config SYS_SUPPORTS_MTU2
150 config SYS_SUPPORTS_TMU
153 config STACKTRACE_SUPPORT
156 config LOCKDEP_SUPPORT
159 config HAVE_LATENCYTOP_SUPPORT
162 config ARCH_HAS_ILOG2_U32
165 config ARCH_HAS_ILOG2_U64
168 config ARCH_NO_VIRT_TO_BUS
171 config ARCH_HAS_DEFAULT_IDLE
174 config ARCH_HAS_CPU_IDLE_WAIT
183 config DMA_NONCOHERENT
184 def_bool !DMA_COHERENT
186 config NEED_DMA_MAP_STATE
187 def_bool DMA_NONCOHERENT
189 source "init/Kconfig"
191 source "kernel/Kconfig.freezer"
207 select CPU_HAS_INTEVT
209 select SYS_SUPPORTS_TMU
213 select CPU_HAS_INTEVT
215 select CPU_HAS_FPU if !CPU_SH4AL_DSP
216 select SYS_SUPPORTS_TMU
217 select SYS_SUPPORTS_HUGETLBFS if MMU
231 select SYS_SUPPORTS_TMU
232 select SYS_SUPPORTS_HUGETLBFS if MMU
240 select SYS_SUPPORTS_SMP
241 select SYS_SUPPORTS_NUMA
245 select ARCH_SUSPEND_POSSIBLE
252 prompt "Processor sub-type selection"
258 # SH-2 Processor Support
260 config CPU_SUBTYPE_SH7619
261 bool "Support SH7619 processor"
263 select SYS_SUPPORTS_CMT
265 # SH-2A Processor Support
267 config CPU_SUBTYPE_SH7201
268 bool "Support SH7201 processor"
271 select SYS_SUPPORTS_MTU2
273 config CPU_SUBTYPE_SH7203
274 bool "Support SH7203 processor"
277 select SYS_SUPPORTS_CMT
278 select SYS_SUPPORTS_MTU2
280 config CPU_SUBTYPE_SH7206
281 bool "Support SH7206 processor"
283 select SYS_SUPPORTS_CMT
284 select SYS_SUPPORTS_MTU2
286 config CPU_SUBTYPE_SH7263
287 bool "Support SH7263 processor"
290 select SYS_SUPPORTS_CMT
291 select SYS_SUPPORTS_MTU2
293 config CPU_SUBTYPE_MXG
294 bool "Support MX-G processor"
296 select SYS_SUPPORTS_MTU2
298 Select MX-G if running on an R8A03022BG part.
300 # SH-3 Processor Support
302 config CPU_SUBTYPE_SH7705
303 bool "Support SH7705 processor"
306 config CPU_SUBTYPE_SH7706
307 bool "Support SH7706 processor"
310 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
312 config CPU_SUBTYPE_SH7707
313 bool "Support SH7707 processor"
316 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
318 config CPU_SUBTYPE_SH7708
319 bool "Support SH7708 processor"
322 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
323 if you have a 100 Mhz SH-3 HD6417708R CPU.
325 config CPU_SUBTYPE_SH7709
326 bool "Support SH7709 processor"
329 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
331 config CPU_SUBTYPE_SH7710
332 bool "Support SH7710 processor"
336 Select SH7710 if you have a SH3-DSP SH7710 CPU.
338 config CPU_SUBTYPE_SH7712
339 bool "Support SH7712 processor"
343 Select SH7712 if you have a SH3-DSP SH7712 CPU.
345 config CPU_SUBTYPE_SH7720
346 bool "Support SH7720 processor"
349 select SYS_SUPPORTS_CMT
351 Select SH7720 if you have a SH3-DSP SH7720 CPU.
353 config CPU_SUBTYPE_SH7721
354 bool "Support SH7721 processor"
357 select SYS_SUPPORTS_CMT
359 Select SH7721 if you have a SH3-DSP SH7721 CPU.
361 # SH-4 Processor Support
363 config CPU_SUBTYPE_SH7750
364 bool "Support SH7750 processor"
367 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
369 config CPU_SUBTYPE_SH7091
370 bool "Support SH7091 processor"
373 Select SH7091 if you have an SH-4 based Sega device (such as
374 the Dreamcast, Naomi, and Naomi 2).
376 config CPU_SUBTYPE_SH7750R
377 bool "Support SH7750R processor"
380 config CPU_SUBTYPE_SH7750S
381 bool "Support SH7750S processor"
384 config CPU_SUBTYPE_SH7751
385 bool "Support SH7751 processor"
388 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
389 or if you have a HD6417751R CPU.
391 config CPU_SUBTYPE_SH7751R
392 bool "Support SH7751R processor"
395 config CPU_SUBTYPE_SH7760
396 bool "Support SH7760 processor"
399 config CPU_SUBTYPE_SH4_202
400 bool "Support SH4-202 processor"
403 # SH-4A Processor Support
405 config CPU_SUBTYPE_SH7723
406 bool "Support SH7723 processor"
410 select ARCH_SPARSEMEM_ENABLE
411 select SYS_SUPPORTS_CMT
413 Select SH7723 if you have an SH-MobileR2 CPU.
415 config CPU_SUBTYPE_SH7724
416 bool "Support SH7724 processor"
420 select ARCH_SPARSEMEM_ENABLE
421 select SYS_SUPPORTS_CMT
423 Select SH7724 if you have an SH-MobileR2R CPU.
425 config CPU_SUBTYPE_SH7757
426 bool "Support SH7757 processor"
430 Select SH7757 if you have a SH4A SH7757 CPU.
432 config CPU_SUBTYPE_SH7763
433 bool "Support SH7763 processor"
436 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
438 config CPU_SUBTYPE_SH7770
439 bool "Support SH7770 processor"
442 config CPU_SUBTYPE_SH7780
443 bool "Support SH7780 processor"
446 config CPU_SUBTYPE_SH7785
447 bool "Support SH7785 processor"
450 select ARCH_SPARSEMEM_ENABLE
451 select SYS_SUPPORTS_NUMA
453 config CPU_SUBTYPE_SH7786
454 bool "Support SH7786 processor"
457 select CPU_HAS_PTEAEX
458 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
460 config CPU_SUBTYPE_SHX3
461 bool "Support SH-X3 processor"
464 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
466 # SH4AL-DSP Processor Support
468 config CPU_SUBTYPE_SH7343
469 bool "Support SH7343 processor"
472 select SYS_SUPPORTS_CMT
474 config CPU_SUBTYPE_SH7722
475 bool "Support SH7722 processor"
479 select ARCH_SPARSEMEM_ENABLE
480 select SYS_SUPPORTS_NUMA
481 select SYS_SUPPORTS_CMT
483 config CPU_SUBTYPE_SH7366
484 bool "Support SH7366 processor"
488 select ARCH_SPARSEMEM_ENABLE
489 select SYS_SUPPORTS_NUMA
490 select SYS_SUPPORTS_CMT
499 prompt "Processor sub-type selection"
501 # SH-5 Processor Support
503 config CPU_SUBTYPE_SH5_101
504 bool "Support SH5-101 processor"
507 config CPU_SUBTYPE_SH5_103
508 bool "Support SH5-103 processor"
515 source "arch/sh/mm/Kconfig"
517 source "arch/sh/Kconfig.cpu"
519 source "arch/sh/boards/Kconfig"
521 menu "Timer and clock configuration"
524 bool "TMU timer driver"
525 depends on SYS_SUPPORTS_TMU
528 This enables the build of the TMU timer driver.
531 bool "CMT timer driver"
532 depends on SYS_SUPPORTS_CMT
535 This enables build of the CMT timer driver.
538 bool "MTU2 timer driver"
539 depends on SYS_SUPPORTS_MTU2
542 This enables build of the MTU2 timer driver.
545 int "Peripheral clock frequency (in Hz)"
546 depends on SH_CLK_CPG_LEGACY
547 default "31250000" if CPU_SUBTYPE_SH7619
548 default "33333333" if CPU_SUBTYPE_SH7770 || \
549 CPU_SUBTYPE_SH7760 || \
550 CPU_SUBTYPE_SH7705 || \
551 CPU_SUBTYPE_SH7203 || \
552 CPU_SUBTYPE_SH7206 || \
553 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 && \
572 int "CPU Mode Pin Setting"
574 default 6 if CPU_SUBTYPE_SH7206
575 default 5 if CPU_SUBTYPE_SH7619
578 MD2 - MD0 pin setting.
580 source "kernel/time/Kconfig"
584 menu "CPU Frequency scaling"
586 source "drivers/cpufreq/Kconfig"
589 tristate "SuperH CPU Frequency driver"
591 select CPU_FREQ_TABLE
593 This adds the cpufreq driver for SuperH. Any CPU that supports
594 clock rate rounding through the clock framework can use this
595 driver. While it will make the kernel slightly larger, this is
596 harmless for CPUs that don't support rate rounding. The driver
597 will also generate a notice in the boot log before disabling
598 itself if the CPU in question is not capable of rate rounding.
600 For details, take a look at <file:Documentation/cpu-freq>.
606 source "arch/sh/drivers/Kconfig"
610 menu "Kernel features"
612 source kernel/Kconfig.hz
615 bool "kexec system call (EXPERIMENTAL)"
616 depends on SUPERH32 && EXPERIMENTAL && MMU
618 kexec is a system call that implements the ability to shutdown your
619 current kernel, and to start another kernel. It is like a reboot
620 but it is independent of the system firmware. And like a reboot
621 you can start any kernel with it, not just Linux.
623 The name comes from the similarity to the exec system call.
625 It is an ongoing process to be certain the hardware in a machine
626 is properly shutdown, so do not be surprised if this code does not
627 initially work for you. It may help to enable device hotplugging
628 support. As of this writing the exact hardware interface is
629 strongly in flux, so no good recommendation can be made.
632 bool "kernel crash dumps (EXPERIMENTAL)"
633 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
635 Generate crash dump after being started by kexec.
636 This should be normally only set in special crash dump kernels
637 which are loaded in the main kernel with kexec-tools into
638 a specially reserved region and then later executed after
639 a crash by kdump/kexec. The crash dump kernel must be compiled
640 to a memory address not used by the main kernel using
643 For more details see Documentation/kdump/kdump.txt
646 bool "kexec jump (EXPERIMENTAL)"
647 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
649 Jump between original kernel and kexeced kernel and invoke
653 bool "Enable seccomp to safely compute untrusted bytecode"
656 This kernel feature is useful for number crunching applications
657 that may need to compute untrusted bytecode during their
658 execution. By using pipes or other transports made available to
659 the process as file descriptors supporting the read/write
660 syscalls, it's possible to isolate those applications in
661 their own address space using seccomp. Once seccomp is
662 enabled via prctl, it cannot be disabled and the task is only
663 allowed to execute a few safe syscalls defined by each seccomp
669 bool "Symmetric multi-processing support"
670 depends on SYS_SUPPORTS_SMP
671 select USE_GENERIC_SMP_HELPERS
673 This enables support for systems with more than one CPU. If you have
674 a system with only one CPU, like most personal computers, say N. If
675 you have a system with more than one CPU, say Y.
677 If you say N here, the kernel will run on single and multiprocessor
678 machines, but will use only one CPU of a multiprocessor machine. If
679 you say Y here, the kernel will run on many, but not all,
680 singleprocessor machines. On a singleprocessor machine, the kernel
681 will run faster if you say N here.
683 People using multiprocessor machines who say Y here should also say
684 Y to "Enhanced Real Time Clock Support", below.
686 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
687 available at <http://www.tldp.org/docs.html#howto>.
689 If you don't know what to do here, say N.
692 int "Maximum number of CPUs (2-32)"
695 default "4" if CPU_SUBTYPE_SHX3
698 This allows you to specify the maximum number of CPUs which this
699 kernel will support. The maximum supported value is 32 and the
700 minimum value which makes sense is 2.
702 This is purely to save memory - each supported CPU adds
703 approximately eight kilobytes to the kernel image.
706 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
707 depends on SMP && HOTPLUG && EXPERIMENTAL
709 Say Y here to experiment with turning CPUs off and on. CPUs
710 can be controlled through /sys/devices/system/cpu.
712 source "kernel/Kconfig.preempt"
716 depends on !SMP && SUPERH32
718 This enables support for gUSA (general UserSpace Atomicity).
719 This is the default implementation for both UP and non-ll/sc
720 CPUs, and is used by the libc, amongst others.
722 For additional information, design information can be found
723 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
725 This should only be disabled for special cases where alternate
726 atomicity implementations exist.
729 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
730 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
732 Enabling this option will allow the kernel to implement some
733 atomic operations using a software implementation of load-locked/
734 store-conditional (LLSC). On machines which do not have hardware
735 LLSC, this should be more efficient than the other alternative of
736 disabling interrupts around the atomic sequence.
738 source "drivers/sh/Kconfig"
744 config ZERO_PAGE_OFFSET
746 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
747 SH_7751_SOLUTION_ENGINE
748 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
749 default "0x00002000" if PAGE_SIZE_8KB
752 This sets the default offset of zero page.
754 config BOOT_LINK_OFFSET
756 default "0x00210000" if SH_SHMIN
757 default "0x00400000" if SH_CAYMAN
758 default "0x00810000" if SH_7780_SOLUTION_ENGINE
759 default "0x009e0000" if SH_TITAN
760 default "0x01800000" if SH_SDK7780
761 default "0x02000000" if SH_EDOSK7760
764 This option allows you to set the link address offset of the zImage.
765 This can be useful if you are on a board which has a small amount of
770 default "0x00001000" if PAGE_SIZE_4KB
771 default "0x00002000" if PAGE_SIZE_8KB
772 default "0x00004000" if PAGE_SIZE_16KB
773 default "0x00010000" if PAGE_SIZE_64KB
777 prompt "Kernel command line"
779 default CMDLINE_OVERWRITE
781 Setting this option allows the kernel command line arguments
784 config CMDLINE_OVERWRITE
785 bool "Overwrite bootloader kernel arguments"
787 Given string will overwrite any arguments passed in by
790 config CMDLINE_EXTEND
791 bool "Extend bootloader kernel arguments"
793 Given string will be concatenated with arguments passed in
799 string "Kernel command line arguments string"
800 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
801 default "console=ttySC1,115200"
808 tristate "SuperHyway Bus support"
809 depends on CPU_SUBTYPE_SH4_202
812 bool "Maple Bus support"
813 depends on SH_DREAMCAST
815 The Maple Bus is SEGA's serial communication bus for peripherals
816 on the Dreamcast. Without this bus support you won't be able to
817 get your Dreamcast keyboard etc to work, so most users
818 probably want to say 'Y' here, unless you are only using the
819 Dreamcast with a serial line terminal or a remote network
824 depends on SYS_SUPPORTS_PCI
827 Find out whether you have a PCI motherboard. PCI is the name of a
828 bus system, i.e. the way the CPU talks to the other stuff inside
829 your box. If you have PCI, say Y, otherwise N.
834 source "drivers/pci/pcie/Kconfig"
836 source "drivers/pci/Kconfig"
838 source "drivers/pcmcia/Kconfig"
840 source "drivers/pci/hotplug/Kconfig"
844 menu "Executable file formats"
846 source "fs/Kconfig.binfmt"
850 menu "Power management options (EXPERIMENTAL)"
851 depends on EXPERIMENTAL
853 source "kernel/power/Kconfig"
855 source "drivers/cpuidle/Kconfig"
861 source "drivers/Kconfig"
865 source "arch/sh/Kconfig.debug"
867 source "security/Kconfig"
869 source "crypto/Kconfig"
871 menuconfig VIRTUALIZATION
872 bool "Virtualization"
875 Say Y here to get to see options for using your Linux host to run other
876 operating systems inside virtual machines (guests).
877 This option alone does not add any kernel code.
879 If you say N, all options in this submenu will be skipped and disabled.
883 source drivers/virtio/Kconfig
885 endif # VIRTUALIZATION