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
163 config ARCH_HAS_ILOG2_U32
166 config ARCH_HAS_ILOG2_U64
169 config ARCH_NO_VIRT_TO_BUS
172 config ARCH_HAS_DEFAULT_IDLE
175 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 source "init/Kconfig"
192 source "kernel/Kconfig.freezer"
208 select CPU_HAS_INTEVT
210 select SYS_SUPPORTS_TMU
214 select CPU_HAS_INTEVT
216 select CPU_HAS_FPU if !CPU_SH4AL_DSP
217 select SYS_SUPPORTS_TMU
218 select SYS_SUPPORTS_HUGETLBFS if MMU
232 select SYS_SUPPORTS_TMU
233 select SYS_SUPPORTS_HUGETLBFS if MMU
244 select ARCH_SUSPEND_POSSIBLE
251 prompt "Processor sub-type selection"
257 # SH-2 Processor Support
259 config CPU_SUBTYPE_SH7619
260 bool "Support SH7619 processor"
262 select SYS_SUPPORTS_CMT
264 # SH-2A Processor Support
266 config CPU_SUBTYPE_SH7201
267 bool "Support SH7201 processor"
270 select SYS_SUPPORTS_MTU2
272 config CPU_SUBTYPE_SH7203
273 bool "Support SH7203 processor"
276 select SYS_SUPPORTS_CMT
277 select SYS_SUPPORTS_MTU2
279 config CPU_SUBTYPE_SH7206
280 bool "Support SH7206 processor"
282 select SYS_SUPPORTS_CMT
283 select SYS_SUPPORTS_MTU2
285 config CPU_SUBTYPE_SH7263
286 bool "Support SH7263 processor"
289 select SYS_SUPPORTS_CMT
290 select SYS_SUPPORTS_MTU2
292 config CPU_SUBTYPE_MXG
293 bool "Support MX-G processor"
295 select SYS_SUPPORTS_MTU2
297 Select MX-G if running on an R8A03022BG part.
299 # SH-3 Processor Support
301 config CPU_SUBTYPE_SH7705
302 bool "Support SH7705 processor"
305 config CPU_SUBTYPE_SH7706
306 bool "Support SH7706 processor"
309 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
311 config CPU_SUBTYPE_SH7707
312 bool "Support SH7707 processor"
315 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
317 config CPU_SUBTYPE_SH7708
318 bool "Support SH7708 processor"
321 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
322 if you have a 100 Mhz SH-3 HD6417708R CPU.
324 config CPU_SUBTYPE_SH7709
325 bool "Support SH7709 processor"
328 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
330 config CPU_SUBTYPE_SH7710
331 bool "Support SH7710 processor"
335 Select SH7710 if you have a SH3-DSP SH7710 CPU.
337 config CPU_SUBTYPE_SH7712
338 bool "Support SH7712 processor"
342 Select SH7712 if you have a SH3-DSP SH7712 CPU.
344 config CPU_SUBTYPE_SH7720
345 bool "Support SH7720 processor"
348 select SYS_SUPPORTS_CMT
350 Select SH7720 if you have a SH3-DSP SH7720 CPU.
352 config CPU_SUBTYPE_SH7721
353 bool "Support SH7721 processor"
356 select SYS_SUPPORTS_CMT
358 Select SH7721 if you have a SH3-DSP SH7721 CPU.
360 # SH-4 Processor Support
362 config CPU_SUBTYPE_SH7750
363 bool "Support SH7750 processor"
366 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
368 config CPU_SUBTYPE_SH7091
369 bool "Support SH7091 processor"
372 Select SH7091 if you have an SH-4 based Sega device (such as
373 the Dreamcast, Naomi, and Naomi 2).
375 config CPU_SUBTYPE_SH7750R
376 bool "Support SH7750R processor"
379 config CPU_SUBTYPE_SH7750S
380 bool "Support SH7750S processor"
383 config CPU_SUBTYPE_SH7751
384 bool "Support SH7751 processor"
387 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
388 or if you have a HD6417751R CPU.
390 config CPU_SUBTYPE_SH7751R
391 bool "Support SH7751R processor"
394 config CPU_SUBTYPE_SH7760
395 bool "Support SH7760 processor"
398 config CPU_SUBTYPE_SH4_202
399 bool "Support SH4-202 processor"
402 # SH-4A Processor Support
404 config CPU_SUBTYPE_SH7723
405 bool "Support SH7723 processor"
409 select ARCH_SPARSEMEM_ENABLE
410 select SYS_SUPPORTS_CMT
412 Select SH7723 if you have an SH-MobileR2 CPU.
414 config CPU_SUBTYPE_SH7724
415 bool "Support SH7724 processor"
419 select ARCH_SPARSEMEM_ENABLE
420 select SYS_SUPPORTS_CMT
422 Select SH7724 if you have an SH-MobileR2R CPU.
424 config CPU_SUBTYPE_SH7757
425 bool "Support SH7757 processor"
429 Select SH7757 if you have a SH4A SH7757 CPU.
431 config CPU_SUBTYPE_SH7763
432 bool "Support SH7763 processor"
435 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
437 config CPU_SUBTYPE_SH7770
438 bool "Support SH7770 processor"
441 config CPU_SUBTYPE_SH7780
442 bool "Support SH7780 processor"
445 config CPU_SUBTYPE_SH7785
446 bool "Support SH7785 processor"
449 select ARCH_SPARSEMEM_ENABLE
450 select SYS_SUPPORTS_NUMA
452 config CPU_SUBTYPE_SH7786
453 bool "Support SH7786 processor"
456 select CPU_HAS_PTEAEX
457 select ARCH_SPARSEMEM_ENABLE
458 select SYS_SUPPORTS_NUMA
459 select SYS_SUPPORTS_SMP
460 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
462 config CPU_SUBTYPE_SHX3
463 bool "Support SH-X3 processor"
466 select ARCH_SPARSEMEM_ENABLE
467 select SYS_SUPPORTS_NUMA
468 select SYS_SUPPORTS_SMP
469 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
471 # SH4AL-DSP Processor Support
473 config CPU_SUBTYPE_SH7343
474 bool "Support SH7343 processor"
477 select SYS_SUPPORTS_CMT
479 config CPU_SUBTYPE_SH7722
480 bool "Support SH7722 processor"
484 select ARCH_SPARSEMEM_ENABLE
485 select SYS_SUPPORTS_NUMA
486 select SYS_SUPPORTS_CMT
488 config CPU_SUBTYPE_SH7366
489 bool "Support SH7366 processor"
493 select ARCH_SPARSEMEM_ENABLE
494 select SYS_SUPPORTS_NUMA
495 select SYS_SUPPORTS_CMT
504 prompt "Processor sub-type selection"
506 # SH-5 Processor Support
508 config CPU_SUBTYPE_SH5_101
509 bool "Support SH5-101 processor"
512 config CPU_SUBTYPE_SH5_103
513 bool "Support SH5-103 processor"
520 source "arch/sh/mm/Kconfig"
522 source "arch/sh/Kconfig.cpu"
524 source "arch/sh/boards/Kconfig"
526 menu "Timer and clock configuration"
529 bool "TMU timer driver"
530 depends on SYS_SUPPORTS_TMU
533 This enables the build of the TMU timer driver.
536 bool "CMT timer driver"
537 depends on SYS_SUPPORTS_CMT
540 This enables build of the CMT timer driver.
543 bool "MTU2 timer driver"
544 depends on SYS_SUPPORTS_MTU2
547 This enables build of the MTU2 timer driver.
550 int "Peripheral clock frequency (in Hz)"
551 depends on SH_CLK_CPG_LEGACY
552 default "31250000" if CPU_SUBTYPE_SH7619
553 default "33333333" if CPU_SUBTYPE_SH7770 || \
554 CPU_SUBTYPE_SH7760 || \
555 CPU_SUBTYPE_SH7705 || \
556 CPU_SUBTYPE_SH7203 || \
557 CPU_SUBTYPE_SH7206 || \
558 CPU_SUBTYPE_SH7263 || \
560 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
561 default "66000000" if CPU_SUBTYPE_SH4_202
564 This option is used to specify the peripheral clock frequency.
565 This is necessary for determining the reference clock value on
566 platforms lacking an RTC.
571 config SH_CLK_CPG_LEGACY
572 depends on SH_CLK_CPG
573 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
577 int "CPU Mode Pin Setting"
579 default 6 if CPU_SUBTYPE_SH7206
580 default 5 if CPU_SUBTYPE_SH7619
583 MD2 - MD0 pin setting.
585 source "kernel/time/Kconfig"
589 menu "CPU Frequency scaling"
591 source "drivers/cpufreq/Kconfig"
594 tristate "SuperH CPU Frequency driver"
596 select CPU_FREQ_TABLE
598 This adds the cpufreq driver for SuperH. Any CPU that supports
599 clock rate rounding through the clock framework can use this
600 driver. While it will make the kernel slightly larger, this is
601 harmless for CPUs that don't support rate rounding. The driver
602 will also generate a notice in the boot log before disabling
603 itself if the CPU in question is not capable of rate rounding.
605 For details, take a look at <file:Documentation/cpu-freq>.
611 source "arch/sh/drivers/Kconfig"
615 menu "Kernel features"
617 source kernel/Kconfig.hz
620 bool "kexec system call (EXPERIMENTAL)"
621 depends on SUPERH32 && EXPERIMENTAL && MMU
623 kexec is a system call that implements the ability to shutdown your
624 current kernel, and to start another kernel. It is like a reboot
625 but it is independent of the system firmware. And like a reboot
626 you can start any kernel with it, not just Linux.
628 The name comes from the similarity to the exec system call.
630 It is an ongoing process to be certain the hardware in a machine
631 is properly shutdown, so do not be surprised if this code does not
632 initially work for you. It may help to enable device hotplugging
633 support. As of this writing the exact hardware interface is
634 strongly in flux, so no good recommendation can be made.
637 bool "kernel crash dumps (EXPERIMENTAL)"
638 depends on SUPERH32 && EXPERIMENTAL
640 Generate crash dump after being started by kexec.
641 This should be normally only set in special crash dump kernels
642 which are loaded in the main kernel with kexec-tools into
643 a specially reserved region and then later executed after
644 a crash by kdump/kexec. The crash dump kernel must be compiled
645 to a memory address not used by the main kernel using
648 For more details see Documentation/kdump/kdump.txt
651 bool "kexec jump (EXPERIMENTAL)"
652 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
654 Jump between original kernel and kexeced kernel and invoke
658 bool "Enable seccomp to safely compute untrusted bytecode"
661 This kernel feature is useful for number crunching applications
662 that may need to compute untrusted bytecode during their
663 execution. By using pipes or other transports made available to
664 the process as file descriptors supporting the read/write
665 syscalls, it's possible to isolate those applications in
666 their own address space using seccomp. Once seccomp is
667 enabled via prctl, it cannot be disabled and the task is only
668 allowed to execute a few safe syscalls defined by each seccomp
674 bool "Symmetric multi-processing support"
675 depends on SYS_SUPPORTS_SMP
676 select USE_GENERIC_SMP_HELPERS
678 This enables support for systems with more than one CPU. If you have
679 a system with only one CPU, like most personal computers, say N. If
680 you have a system with more than one CPU, say Y.
682 If you say N here, the kernel will run on single and multiprocessor
683 machines, but will use only one CPU of a multiprocessor machine. If
684 you say Y here, the kernel will run on many, but not all,
685 singleprocessor machines. On a singleprocessor machine, the kernel
686 will run faster if you say N here.
688 People using multiprocessor machines who say Y here should also say
689 Y to "Enhanced Real Time Clock Support", below.
691 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
692 available at <http://www.tldp.org/docs.html#howto>.
694 If you don't know what to do here, say N.
697 int "Maximum number of CPUs (2-32)"
700 default "4" if CPU_SUBTYPE_SHX3
703 This allows you to specify the maximum number of CPUs which this
704 kernel will support. The maximum supported value is 32 and the
705 minimum value which makes sense is 2.
707 This is purely to save memory - each supported CPU adds
708 approximately eight kilobytes to the kernel image.
710 source "kernel/Kconfig.preempt"
714 depends on !SMP && SUPERH32
716 This enables support for gUSA (general UserSpace Atomicity).
717 This is the default implementation for both UP and non-ll/sc
718 CPUs, and is used by the libc, amongst others.
720 For additional information, design information can be found
721 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
723 This should only be disabled for special cases where alternate
724 atomicity implementations exist.
727 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
728 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
730 Enabling this option will allow the kernel to implement some
731 atomic operations using a software implementation of load-locked/
732 store-conditional (LLSC). On machines which do not have hardware
733 LLSC, this should be more efficient than the other alternative of
734 disabling interrupts around the atomic sequence.
740 config ZERO_PAGE_OFFSET
742 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
743 SH_7751_SOLUTION_ENGINE
744 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
745 default "0x00002000" if PAGE_SIZE_8KB
748 This sets the default offset of zero page.
750 config BOOT_LINK_OFFSET
752 default "0x00210000" if SH_SHMIN
753 default "0x00400000" if SH_CAYMAN
754 default "0x00810000" if SH_7780_SOLUTION_ENGINE
755 default "0x009e0000" if SH_TITAN
756 default "0x01800000" if SH_SDK7780
757 default "0x02000000" if SH_EDOSK7760
760 This option allows you to set the link address offset of the zImage.
761 This can be useful if you are on a board which has a small amount of
766 default "0x00001000" if PAGE_SIZE_4KB
767 default "0x00002000" if PAGE_SIZE_8KB
768 default "0x00004000" if PAGE_SIZE_16KB
769 default "0x00010000" if PAGE_SIZE_64KB
773 prompt "Kernel command line"
775 default CMDLINE_OVERWRITE
777 Setting this option allows the kernel command line arguments
780 config CMDLINE_OVERWRITE
781 bool "Overwrite bootloader kernel arguments"
783 Given string will overwrite any arguments passed in by
786 config CMDLINE_EXTEND
787 bool "Extend bootloader kernel arguments"
789 Given string will be concatenated with arguments passed in
795 string "Kernel command line arguments string"
796 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
797 default "console=ttySC1,115200"
804 tristate "SuperHyway Bus support"
805 depends on CPU_SUBTYPE_SH4_202
808 bool "Maple Bus support"
809 depends on SH_DREAMCAST
811 The Maple Bus is SEGA's serial communication bus for peripherals
812 on the Dreamcast. Without this bus support you won't be able to
813 get your Dreamcast keyboard etc to work, so most users
814 probably want to say 'Y' here, unless you are only using the
815 Dreamcast with a serial line terminal or a remote network
820 depends on SYS_SUPPORTS_PCI
823 Find out whether you have a PCI motherboard. PCI is the name of a
824 bus system, i.e. the way the CPU talks to the other stuff inside
825 your box. If you have PCI, say Y, otherwise N.
830 source "drivers/pci/pcie/Kconfig"
832 source "drivers/pci/Kconfig"
834 source "drivers/pcmcia/Kconfig"
836 source "drivers/pci/hotplug/Kconfig"
840 menu "Executable file formats"
842 source "fs/Kconfig.binfmt"
846 menu "Power management options (EXPERIMENTAL)"
847 depends on EXPERIMENTAL
849 source "kernel/power/Kconfig"
851 source "drivers/cpuidle/Kconfig"
857 source "drivers/Kconfig"
861 source "arch/sh/Kconfig.debug"
863 source "security/Kconfig"
865 source "crypto/Kconfig"