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 PERF_EVENTS if HAVE_HW_BREAKPOINT
48 select ARCH_HIBERNATION_POSSIBLE if MMU
51 def_bool ARCH = "sh64"
55 default "arch/sh/configs/shx3_defconfig" if SUPERH32
56 default "arch/sh/configs/cayman_defconfig" if SUPERH64
58 config RWSEM_GENERIC_SPINLOCK
61 config RWSEM_XCHGADD_ALGORITHM
66 depends on BUG && SUPERH32
72 config GENERIC_FIND_NEXT_BIT
75 config GENERIC_HWEIGHT
78 config GENERIC_HARDIRQS
81 config GENERIC_HARDIRQS_NO__DO_IRQ
84 config GENERIC_IRQ_PROBE
93 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
161 config ARCH_HAS_ILOG2_U32
164 config ARCH_HAS_ILOG2_U64
167 config ARCH_NO_VIRT_TO_BUS
170 config ARCH_HAS_DEFAULT_IDLE
173 config ARCH_HAS_CPU_IDLE_WAIT
182 config DMA_NONCOHERENT
183 def_bool !DMA_COHERENT
185 source "init/Kconfig"
187 source "kernel/Kconfig.freezer"
203 select CPU_HAS_INTEVT
205 select SYS_SUPPORTS_TMU
209 select CPU_HAS_INTEVT
211 select CPU_HAS_FPU if !CPU_SH4AL_DSP
212 select SYS_SUPPORTS_TMU
213 select SYS_SUPPORTS_HUGETLBFS if MMU
227 select SYS_SUPPORTS_TMU
228 select SYS_SUPPORTS_HUGETLBFS if MMU
239 select ARCH_SUSPEND_POSSIBLE
246 prompt "Processor sub-type selection"
252 # SH-2 Processor Support
254 config CPU_SUBTYPE_SH7619
255 bool "Support SH7619 processor"
257 select SYS_SUPPORTS_CMT
259 # SH-2A Processor Support
261 config CPU_SUBTYPE_SH7201
262 bool "Support SH7201 processor"
265 select SYS_SUPPORTS_MTU2
267 config CPU_SUBTYPE_SH7203
268 bool "Support SH7203 processor"
271 select SYS_SUPPORTS_CMT
272 select SYS_SUPPORTS_MTU2
274 config CPU_SUBTYPE_SH7206
275 bool "Support SH7206 processor"
277 select SYS_SUPPORTS_CMT
278 select SYS_SUPPORTS_MTU2
280 config CPU_SUBTYPE_SH7263
281 bool "Support SH7263 processor"
284 select SYS_SUPPORTS_CMT
285 select SYS_SUPPORTS_MTU2
287 config CPU_SUBTYPE_MXG
288 bool "Support MX-G processor"
290 select SYS_SUPPORTS_MTU2
292 Select MX-G if running on an R8A03022BG part.
294 # SH-3 Processor Support
296 config CPU_SUBTYPE_SH7705
297 bool "Support SH7705 processor"
300 config CPU_SUBTYPE_SH7706
301 bool "Support SH7706 processor"
304 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
306 config CPU_SUBTYPE_SH7707
307 bool "Support SH7707 processor"
310 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
312 config CPU_SUBTYPE_SH7708
313 bool "Support SH7708 processor"
316 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
317 if you have a 100 Mhz SH-3 HD6417708R CPU.
319 config CPU_SUBTYPE_SH7709
320 bool "Support SH7709 processor"
323 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
325 config CPU_SUBTYPE_SH7710
326 bool "Support SH7710 processor"
330 Select SH7710 if you have a SH3-DSP SH7710 CPU.
332 config CPU_SUBTYPE_SH7712
333 bool "Support SH7712 processor"
337 Select SH7712 if you have a SH3-DSP SH7712 CPU.
339 config CPU_SUBTYPE_SH7720
340 bool "Support SH7720 processor"
343 select SYS_SUPPORTS_CMT
345 Select SH7720 if you have a SH3-DSP SH7720 CPU.
347 config CPU_SUBTYPE_SH7721
348 bool "Support SH7721 processor"
351 select SYS_SUPPORTS_CMT
353 Select SH7721 if you have a SH3-DSP SH7721 CPU.
355 # SH-4 Processor Support
357 config CPU_SUBTYPE_SH7750
358 bool "Support SH7750 processor"
361 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
363 config CPU_SUBTYPE_SH7091
364 bool "Support SH7091 processor"
367 Select SH7091 if you have an SH-4 based Sega device (such as
368 the Dreamcast, Naomi, and Naomi 2).
370 config CPU_SUBTYPE_SH7750R
371 bool "Support SH7750R processor"
374 config CPU_SUBTYPE_SH7750S
375 bool "Support SH7750S processor"
378 config CPU_SUBTYPE_SH7751
379 bool "Support SH7751 processor"
382 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
383 or if you have a HD6417751R CPU.
385 config CPU_SUBTYPE_SH7751R
386 bool "Support SH7751R processor"
389 config CPU_SUBTYPE_SH7760
390 bool "Support SH7760 processor"
393 config CPU_SUBTYPE_SH4_202
394 bool "Support SH4-202 processor"
397 # SH-4A Processor Support
399 config CPU_SUBTYPE_SH7723
400 bool "Support SH7723 processor"
404 select ARCH_SPARSEMEM_ENABLE
405 select SYS_SUPPORTS_CMT
407 Select SH7723 if you have an SH-MobileR2 CPU.
409 config CPU_SUBTYPE_SH7724
410 bool "Support SH7724 processor"
414 select ARCH_SPARSEMEM_ENABLE
415 select SYS_SUPPORTS_CMT
417 Select SH7724 if you have an SH-MobileR2R CPU.
419 config CPU_SUBTYPE_SH7757
420 bool "Support SH7757 processor"
424 Select SH7757 if you have a SH4A SH7757 CPU.
426 config CPU_SUBTYPE_SH7763
427 bool "Support SH7763 processor"
430 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
432 config CPU_SUBTYPE_SH7770
433 bool "Support SH7770 processor"
436 config CPU_SUBTYPE_SH7780
437 bool "Support SH7780 processor"
440 config CPU_SUBTYPE_SH7785
441 bool "Support SH7785 processor"
444 select ARCH_SPARSEMEM_ENABLE
445 select SYS_SUPPORTS_NUMA
447 config CPU_SUBTYPE_SH7786
448 bool "Support SH7786 processor"
451 select CPU_HAS_PTEAEX
452 select ARCH_SPARSEMEM_ENABLE
453 select SYS_SUPPORTS_NUMA
454 select SYS_SUPPORTS_SMP
455 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
457 config CPU_SUBTYPE_SHX3
458 bool "Support SH-X3 processor"
461 select ARCH_SPARSEMEM_ENABLE
462 select SYS_SUPPORTS_NUMA
463 select SYS_SUPPORTS_SMP
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
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.
705 source "kernel/Kconfig.preempt"
709 depends on !SMP && SUPERH32
711 This enables support for gUSA (general UserSpace Atomicity).
712 This is the default implementation for both UP and non-ll/sc
713 CPUs, and is used by the libc, amongst others.
715 For additional information, design information can be found
716 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
718 This should only be disabled for special cases where alternate
719 atomicity implementations exist.
722 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
723 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
725 Enabling this option will allow the kernel to implement some
726 atomic operations using a software implementation of load-locked/
727 store-conditional (LLSC). On machines which do not have hardware
728 LLSC, this should be more efficient than the other alternative of
729 disabling interrupts around the atomic sequence.
733 depends on SUPERH32 && !SH_DREAMCAST && !SH_HIGHLANDER && \
734 !SH_RTS7751R2D && !HD64461 && !SH_7724_SOLUTION_ENGINE
736 This enables support for sparse irqs. This is useful in general
737 as most CPUs have a fairly sparse array of IRQ vectors, which
738 the irq_desc then maps directly on to. Systems with a high
739 number of off-chip IRQs will want to treat this as
740 experimental until they have been independently verified.
742 If you don't know what to do here, say N.
748 config ZERO_PAGE_OFFSET
750 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
751 SH_7751_SOLUTION_ENGINE
752 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
753 default "0x00002000" if PAGE_SIZE_8KB
756 This sets the default offset of zero page.
758 config BOOT_LINK_OFFSET
760 default "0x00210000" if SH_SHMIN
761 default "0x00400000" if SH_CAYMAN
762 default "0x00810000" if SH_7780_SOLUTION_ENGINE
763 default "0x009e0000" if SH_TITAN
764 default "0x01800000" if SH_SDK7780
765 default "0x02000000" if SH_EDOSK7760
768 This option allows you to set the link address offset of the zImage.
769 This can be useful if you are on a board which has a small amount of
774 default "0x00001000" if PAGE_SIZE_4KB
775 default "0x00002000" if PAGE_SIZE_8KB
776 default "0x00004000" if PAGE_SIZE_16KB
777 default "0x00010000" if PAGE_SIZE_64KB
781 prompt "Kernel command line"
783 default CMDLINE_OVERWRITE
785 Setting this option allows the kernel command line arguments
788 config CMDLINE_OVERWRITE
789 bool "Overwrite bootloader kernel arguments"
791 Given string will overwrite any arguments passed in by
794 config CMDLINE_EXTEND
795 bool "Extend bootloader kernel arguments"
797 Given string will be concatenated with arguments passed in
803 string "Kernel command line arguments string"
804 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
805 default "console=ttySC1,115200"
812 tristate "SuperHyway Bus support"
813 depends on CPU_SUBTYPE_SH4_202
816 bool "Maple Bus support"
817 depends on SH_DREAMCAST
819 The Maple Bus is SEGA's serial communication bus for peripherals
820 on the Dreamcast. Without this bus support you won't be able to
821 get your Dreamcast keyboard etc to work, so most users
822 probably want to say 'Y' here, unless you are only using the
823 Dreamcast with a serial line terminal or a remote network
828 depends on SYS_SUPPORTS_PCI
831 Find out whether you have a PCI motherboard. PCI is the name of a
832 bus system, i.e. the way the CPU talks to the other stuff inside
833 your box. If you have PCI, say Y, otherwise N.
838 source "drivers/pci/pcie/Kconfig"
840 source "drivers/pci/Kconfig"
842 source "drivers/pcmcia/Kconfig"
844 source "drivers/pci/hotplug/Kconfig"
848 menu "Executable file formats"
850 source "fs/Kconfig.binfmt"
854 menu "Power management options (EXPERIMENTAL)"
855 depends on EXPERIMENTAL
857 source "kernel/power/Kconfig"
859 source "drivers/cpuidle/Kconfig"
865 source "drivers/Kconfig"
869 source "arch/sh/Kconfig.debug"
871 source "security/Kconfig"
873 source "crypto/Kconfig"