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
94 config GENERIC_CALIBRATE_DELAY
103 config GENERIC_CLOCKEVENTS
106 config GENERIC_CLOCKEVENTS_BROADCAST
109 config GENERIC_CMOS_UPDATE
111 depends on SH_SH03 || SH_DREAMCAST
113 config GENERIC_LOCKBREAK
115 depends on SMP && PREEMPT
117 config SYS_SUPPORTS_PM
121 config ARCH_SUSPEND_POSSIBLE
124 config ARCH_HIBERNATION_POSSIBLE
127 config SYS_SUPPORTS_APM_EMULATION
129 select ARCH_SUSPEND_POSSIBLE
131 config SYS_SUPPORTS_HUGETLBFS
134 config SYS_SUPPORTS_SMP
137 config SYS_SUPPORTS_NUMA
140 config SYS_SUPPORTS_PCI
143 config SYS_SUPPORTS_CMT
146 config SYS_SUPPORTS_MTU2
149 config SYS_SUPPORTS_TMU
152 config STACKTRACE_SUPPORT
155 config LOCKDEP_SUPPORT
158 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
243 select ARCH_SUSPEND_POSSIBLE
250 prompt "Processor sub-type selection"
256 # SH-2 Processor Support
258 config CPU_SUBTYPE_SH7619
259 bool "Support SH7619 processor"
261 select SYS_SUPPORTS_CMT
263 # SH-2A Processor Support
265 config CPU_SUBTYPE_SH7201
266 bool "Support SH7201 processor"
269 select SYS_SUPPORTS_MTU2
271 config CPU_SUBTYPE_SH7203
272 bool "Support SH7203 processor"
275 select SYS_SUPPORTS_CMT
276 select SYS_SUPPORTS_MTU2
278 config CPU_SUBTYPE_SH7206
279 bool "Support SH7206 processor"
281 select SYS_SUPPORTS_CMT
282 select SYS_SUPPORTS_MTU2
284 config CPU_SUBTYPE_SH7263
285 bool "Support SH7263 processor"
288 select SYS_SUPPORTS_CMT
289 select SYS_SUPPORTS_MTU2
291 config CPU_SUBTYPE_MXG
292 bool "Support MX-G processor"
294 select SYS_SUPPORTS_MTU2
296 Select MX-G if running on an R8A03022BG part.
298 # SH-3 Processor Support
300 config CPU_SUBTYPE_SH7705
301 bool "Support SH7705 processor"
304 config CPU_SUBTYPE_SH7706
305 bool "Support SH7706 processor"
308 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
310 config CPU_SUBTYPE_SH7707
311 bool "Support SH7707 processor"
314 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
316 config CPU_SUBTYPE_SH7708
317 bool "Support SH7708 processor"
320 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
321 if you have a 100 Mhz SH-3 HD6417708R CPU.
323 config CPU_SUBTYPE_SH7709
324 bool "Support SH7709 processor"
327 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
329 config CPU_SUBTYPE_SH7710
330 bool "Support SH7710 processor"
334 Select SH7710 if you have a SH3-DSP SH7710 CPU.
336 config CPU_SUBTYPE_SH7712
337 bool "Support SH7712 processor"
341 Select SH7712 if you have a SH3-DSP SH7712 CPU.
343 config CPU_SUBTYPE_SH7720
344 bool "Support SH7720 processor"
347 select SYS_SUPPORTS_CMT
349 Select SH7720 if you have a SH3-DSP SH7720 CPU.
351 config CPU_SUBTYPE_SH7721
352 bool "Support SH7721 processor"
355 select SYS_SUPPORTS_CMT
357 Select SH7721 if you have a SH3-DSP SH7721 CPU.
359 # SH-4 Processor Support
361 config CPU_SUBTYPE_SH7750
362 bool "Support SH7750 processor"
365 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
367 config CPU_SUBTYPE_SH7091
368 bool "Support SH7091 processor"
371 Select SH7091 if you have an SH-4 based Sega device (such as
372 the Dreamcast, Naomi, and Naomi 2).
374 config CPU_SUBTYPE_SH7750R
375 bool "Support SH7750R processor"
378 config CPU_SUBTYPE_SH7750S
379 bool "Support SH7750S processor"
382 config CPU_SUBTYPE_SH7751
383 bool "Support SH7751 processor"
386 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
387 or if you have a HD6417751R CPU.
389 config CPU_SUBTYPE_SH7751R
390 bool "Support SH7751R processor"
393 config CPU_SUBTYPE_SH7760
394 bool "Support SH7760 processor"
397 config CPU_SUBTYPE_SH4_202
398 bool "Support SH4-202 processor"
401 # SH-4A Processor Support
403 config CPU_SUBTYPE_SH7723
404 bool "Support SH7723 processor"
408 select ARCH_SPARSEMEM_ENABLE
409 select SYS_SUPPORTS_CMT
411 Select SH7723 if you have an SH-MobileR2 CPU.
413 config CPU_SUBTYPE_SH7724
414 bool "Support SH7724 processor"
418 select ARCH_SPARSEMEM_ENABLE
419 select SYS_SUPPORTS_CMT
421 Select SH7724 if you have an SH-MobileR2R CPU.
423 config CPU_SUBTYPE_SH7757
424 bool "Support SH7757 processor"
428 Select SH7757 if you have a SH4A SH7757 CPU.
430 config CPU_SUBTYPE_SH7763
431 bool "Support SH7763 processor"
434 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
436 config CPU_SUBTYPE_SH7770
437 bool "Support SH7770 processor"
440 config CPU_SUBTYPE_SH7780
441 bool "Support SH7780 processor"
444 config CPU_SUBTYPE_SH7785
445 bool "Support SH7785 processor"
448 select ARCH_SPARSEMEM_ENABLE
449 select SYS_SUPPORTS_NUMA
451 config CPU_SUBTYPE_SH7786
452 bool "Support SH7786 processor"
455 select CPU_HAS_PTEAEX
456 select ARCH_SPARSEMEM_ENABLE
457 select SYS_SUPPORTS_NUMA
458 select SYS_SUPPORTS_SMP
459 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
461 config CPU_SUBTYPE_SHX3
462 bool "Support SH-X3 processor"
465 select ARCH_SPARSEMEM_ENABLE
466 select SYS_SUPPORTS_NUMA
467 select SYS_SUPPORTS_SMP
468 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
470 # SH4AL-DSP Processor Support
472 config CPU_SUBTYPE_SH7343
473 bool "Support SH7343 processor"
476 select SYS_SUPPORTS_CMT
478 config CPU_SUBTYPE_SH7722
479 bool "Support SH7722 processor"
483 select ARCH_SPARSEMEM_ENABLE
484 select SYS_SUPPORTS_NUMA
485 select SYS_SUPPORTS_CMT
487 config CPU_SUBTYPE_SH7366
488 bool "Support SH7366 processor"
492 select ARCH_SPARSEMEM_ENABLE
493 select SYS_SUPPORTS_NUMA
494 select SYS_SUPPORTS_CMT
503 prompt "Processor sub-type selection"
505 # SH-5 Processor Support
507 config CPU_SUBTYPE_SH5_101
508 bool "Support SH5-101 processor"
511 config CPU_SUBTYPE_SH5_103
512 bool "Support SH5-103 processor"
519 source "arch/sh/mm/Kconfig"
521 source "arch/sh/Kconfig.cpu"
523 source "arch/sh/boards/Kconfig"
525 menu "Timer and clock configuration"
528 bool "TMU timer driver"
529 depends on SYS_SUPPORTS_TMU
532 This enables the build of the TMU timer driver.
535 bool "CMT timer driver"
536 depends on SYS_SUPPORTS_CMT
539 This enables build of the CMT timer driver.
542 bool "MTU2 timer driver"
543 depends on SYS_SUPPORTS_MTU2
546 This enables build of the MTU2 timer driver.
549 int "Peripheral clock frequency (in Hz)"
550 depends on SH_CLK_CPG_LEGACY
551 default "31250000" if CPU_SUBTYPE_SH7619
552 default "33333333" if CPU_SUBTYPE_SH7770 || \
553 CPU_SUBTYPE_SH7760 || \
554 CPU_SUBTYPE_SH7705 || \
555 CPU_SUBTYPE_SH7203 || \
556 CPU_SUBTYPE_SH7206 || \
557 CPU_SUBTYPE_SH7263 || \
559 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
560 default "66000000" if CPU_SUBTYPE_SH4_202
563 This option is used to specify the peripheral clock frequency.
564 This is necessary for determining the reference clock value on
565 platforms lacking an RTC.
570 config SH_CLK_CPG_LEGACY
571 depends on SH_CLK_CPG
572 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
576 int "CPU Mode Pin Setting"
578 default 6 if CPU_SUBTYPE_SH7206
579 default 5 if CPU_SUBTYPE_SH7619
582 MD2 - MD0 pin setting.
584 source "kernel/time/Kconfig"
588 menu "CPU Frequency scaling"
590 source "drivers/cpufreq/Kconfig"
593 tristate "SuperH CPU Frequency driver"
595 select CPU_FREQ_TABLE
597 This adds the cpufreq driver for SuperH. Any CPU that supports
598 clock rate rounding through the clock framework can use this
599 driver. While it will make the kernel slightly larger, this is
600 harmless for CPUs that don't support rate rounding. The driver
601 will also generate a notice in the boot log before disabling
602 itself if the CPU in question is not capable of rate rounding.
604 For details, take a look at <file:Documentation/cpu-freq>.
610 source "arch/sh/drivers/Kconfig"
614 menu "Kernel features"
616 source kernel/Kconfig.hz
619 bool "kexec system call (EXPERIMENTAL)"
620 depends on SUPERH32 && EXPERIMENTAL && MMU
622 kexec is a system call that implements the ability to shutdown your
623 current kernel, and to start another kernel. It is like a reboot
624 but it is independent of the system firmware. And like a reboot
625 you can start any kernel with it, not just Linux.
627 The name comes from the similarity to the exec system call.
629 It is an ongoing process to be certain the hardware in a machine
630 is properly shutdown, so do not be surprised if this code does not
631 initially work for you. It may help to enable device hotplugging
632 support. As of this writing the exact hardware interface is
633 strongly in flux, so no good recommendation can be made.
636 bool "kernel crash dumps (EXPERIMENTAL)"
637 depends on SUPERH32 && EXPERIMENTAL
639 Generate crash dump after being started by kexec.
640 This should be normally only set in special crash dump kernels
641 which are loaded in the main kernel with kexec-tools into
642 a specially reserved region and then later executed after
643 a crash by kdump/kexec. The crash dump kernel must be compiled
644 to a memory address not used by the main kernel using
647 For more details see Documentation/kdump/kdump.txt
650 bool "kexec jump (EXPERIMENTAL)"
651 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
653 Jump between original kernel and kexeced kernel and invoke
657 bool "Enable seccomp to safely compute untrusted bytecode"
660 This kernel feature is useful for number crunching applications
661 that may need to compute untrusted bytecode during their
662 execution. By using pipes or other transports made available to
663 the process as file descriptors supporting the read/write
664 syscalls, it's possible to isolate those applications in
665 their own address space using seccomp. Once seccomp is
666 enabled via prctl, it cannot be disabled and the task is only
667 allowed to execute a few safe syscalls defined by each seccomp
673 bool "Symmetric multi-processing support"
674 depends on SYS_SUPPORTS_SMP
675 select USE_GENERIC_SMP_HELPERS
677 This enables support for systems with more than one CPU. If you have
678 a system with only one CPU, like most personal computers, say N. If
679 you have a system with more than one CPU, say Y.
681 If you say N here, the kernel will run on single and multiprocessor
682 machines, but will use only one CPU of a multiprocessor machine. If
683 you say Y here, the kernel will run on many, but not all,
684 singleprocessor machines. On a singleprocessor machine, the kernel
685 will run faster if you say N here.
687 People using multiprocessor machines who say Y here should also say
688 Y to "Enhanced Real Time Clock Support", below.
690 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
691 available at <http://www.tldp.org/docs.html#howto>.
693 If you don't know what to do here, say N.
696 int "Maximum number of CPUs (2-32)"
699 default "4" if CPU_SUBTYPE_SHX3
702 This allows you to specify the maximum number of CPUs which this
703 kernel will support. The maximum supported value is 32 and the
704 minimum value which makes sense is 2.
706 This is purely to save memory - each supported CPU adds
707 approximately eight kilobytes to the kernel image.
709 source "kernel/Kconfig.preempt"
713 depends on !SMP && SUPERH32
715 This enables support for gUSA (general UserSpace Atomicity).
716 This is the default implementation for both UP and non-ll/sc
717 CPUs, and is used by the libc, amongst others.
719 For additional information, design information can be found
720 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
722 This should only be disabled for special cases where alternate
723 atomicity implementations exist.
726 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
727 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
729 Enabling this option will allow the kernel to implement some
730 atomic operations using a software implementation of load-locked/
731 store-conditional (LLSC). On machines which do not have hardware
732 LLSC, this should be more efficient than the other alternative of
733 disabling interrupts around the atomic sequence.
739 config ZERO_PAGE_OFFSET
741 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
742 SH_7751_SOLUTION_ENGINE
743 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
744 default "0x00002000" if PAGE_SIZE_8KB
747 This sets the default offset of zero page.
749 config BOOT_LINK_OFFSET
751 default "0x00210000" if SH_SHMIN
752 default "0x00400000" if SH_CAYMAN
753 default "0x00810000" if SH_7780_SOLUTION_ENGINE
754 default "0x009e0000" if SH_TITAN
755 default "0x01800000" if SH_SDK7780
756 default "0x02000000" if SH_EDOSK7760
759 This option allows you to set the link address offset of the zImage.
760 This can be useful if you are on a board which has a small amount of
765 default "0x00001000" if PAGE_SIZE_4KB
766 default "0x00002000" if PAGE_SIZE_8KB
767 default "0x00004000" if PAGE_SIZE_16KB
768 default "0x00010000" if PAGE_SIZE_64KB
772 prompt "Kernel command line"
774 default CMDLINE_OVERWRITE
776 Setting this option allows the kernel command line arguments
779 config CMDLINE_OVERWRITE
780 bool "Overwrite bootloader kernel arguments"
782 Given string will overwrite any arguments passed in by
785 config CMDLINE_EXTEND
786 bool "Extend bootloader kernel arguments"
788 Given string will be concatenated with arguments passed in
794 string "Kernel command line arguments string"
795 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
796 default "console=ttySC1,115200"
803 tristate "SuperHyway Bus support"
804 depends on CPU_SUBTYPE_SH4_202
807 bool "Maple Bus support"
808 depends on SH_DREAMCAST
810 The Maple Bus is SEGA's serial communication bus for peripherals
811 on the Dreamcast. Without this bus support you won't be able to
812 get your Dreamcast keyboard etc to work, so most users
813 probably want to say 'Y' here, unless you are only using the
814 Dreamcast with a serial line terminal or a remote network
819 depends on SYS_SUPPORTS_PCI
822 Find out whether you have a PCI motherboard. PCI is the name of a
823 bus system, i.e. the way the CPU talks to the other stuff inside
824 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"