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
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
26 select HAVE_REGS_AND_STACK_ACCESS_API
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
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
256 prompt "Processor sub-type selection"
262 # SH-2 Processor Support
264 config CPU_SUBTYPE_SH7619
265 bool "Support SH7619 processor"
267 select SYS_SUPPORTS_CMT
269 # SH-2A Processor Support
271 config CPU_SUBTYPE_SH7201
272 bool "Support SH7201 processor"
275 select SYS_SUPPORTS_MTU2
277 config CPU_SUBTYPE_SH7203
278 bool "Support SH7203 processor"
281 select SYS_SUPPORTS_CMT
282 select SYS_SUPPORTS_MTU2
284 config CPU_SUBTYPE_SH7206
285 bool "Support SH7206 processor"
287 select SYS_SUPPORTS_CMT
288 select SYS_SUPPORTS_MTU2
290 config CPU_SUBTYPE_SH7263
291 bool "Support SH7263 processor"
294 select SYS_SUPPORTS_CMT
295 select SYS_SUPPORTS_MTU2
297 config CPU_SUBTYPE_MXG
298 bool "Support MX-G processor"
300 select SYS_SUPPORTS_MTU2
302 Select MX-G if running on an R8A03022BG part.
304 # SH-3 Processor Support
306 config CPU_SUBTYPE_SH7705
307 bool "Support SH7705 processor"
310 config CPU_SUBTYPE_SH7706
311 bool "Support SH7706 processor"
314 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
316 config CPU_SUBTYPE_SH7707
317 bool "Support SH7707 processor"
320 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
322 config CPU_SUBTYPE_SH7708
323 bool "Support SH7708 processor"
326 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
327 if you have a 100 Mhz SH-3 HD6417708R CPU.
329 config CPU_SUBTYPE_SH7709
330 bool "Support SH7709 processor"
333 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
335 config CPU_SUBTYPE_SH7710
336 bool "Support SH7710 processor"
340 Select SH7710 if you have a SH3-DSP SH7710 CPU.
342 config CPU_SUBTYPE_SH7712
343 bool "Support SH7712 processor"
347 Select SH7712 if you have a SH3-DSP SH7712 CPU.
349 config CPU_SUBTYPE_SH7720
350 bool "Support SH7720 processor"
353 select SYS_SUPPORTS_CMT
355 Select SH7720 if you have a SH3-DSP SH7720 CPU.
357 config CPU_SUBTYPE_SH7721
358 bool "Support SH7721 processor"
361 select SYS_SUPPORTS_CMT
363 Select SH7721 if you have a SH3-DSP SH7721 CPU.
365 # SH-4 Processor Support
367 config CPU_SUBTYPE_SH7750
368 bool "Support SH7750 processor"
371 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
373 config CPU_SUBTYPE_SH7091
374 bool "Support SH7091 processor"
377 Select SH7091 if you have an SH-4 based Sega device (such as
378 the Dreamcast, Naomi, and Naomi 2).
380 config CPU_SUBTYPE_SH7750R
381 bool "Support SH7750R processor"
384 config CPU_SUBTYPE_SH7750S
385 bool "Support SH7750S processor"
388 config CPU_SUBTYPE_SH7751
389 bool "Support SH7751 processor"
392 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
393 or if you have a HD6417751R CPU.
395 config CPU_SUBTYPE_SH7751R
396 bool "Support SH7751R processor"
399 config CPU_SUBTYPE_SH7760
400 bool "Support SH7760 processor"
403 config CPU_SUBTYPE_SH4_202
404 bool "Support SH4-202 processor"
407 # SH-4A Processor Support
409 config CPU_SUBTYPE_SH7723
410 bool "Support SH7723 processor"
414 select ARCH_SPARSEMEM_ENABLE
415 select SYS_SUPPORTS_CMT
417 Select SH7723 if you have an SH-MobileR2 CPU.
419 config CPU_SUBTYPE_SH7724
420 bool "Support SH7724 processor"
424 select ARCH_SPARSEMEM_ENABLE
425 select SYS_SUPPORTS_CMT
427 Select SH7724 if you have an SH-MobileR2R CPU.
429 config CPU_SUBTYPE_SH7757
430 bool "Support SH7757 processor"
434 Select SH7757 if you have a SH4A SH7757 CPU.
436 config CPU_SUBTYPE_SH7763
437 bool "Support SH7763 processor"
440 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
442 config CPU_SUBTYPE_SH7770
443 bool "Support SH7770 processor"
446 config CPU_SUBTYPE_SH7780
447 bool "Support SH7780 processor"
450 config CPU_SUBTYPE_SH7785
451 bool "Support SH7785 processor"
454 select ARCH_SPARSEMEM_ENABLE
455 select SYS_SUPPORTS_NUMA
457 config CPU_SUBTYPE_SH7786
458 bool "Support SH7786 processor"
461 select CPU_HAS_PTEAEX
462 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
464 config CPU_SUBTYPE_SHX3
465 bool "Support SH-X3 processor"
468 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
469 select ARCH_REQUIRE_GPIOLIB
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 && \
574 !CPU_SHX3 && !CPU_SUBTYPE_SH7757
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 && BROKEN_ON_SMP
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.
711 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
712 depends on SMP && HOTPLUG && EXPERIMENTAL
714 Say Y here to experiment with turning CPUs off and on. CPUs
715 can be controlled through /sys/devices/system/cpu.
717 source "kernel/Kconfig.preempt"
721 depends on !SMP && SUPERH32
723 This enables support for gUSA (general UserSpace Atomicity).
724 This is the default implementation for both UP and non-ll/sc
725 CPUs, and is used by the libc, amongst others.
727 For additional information, design information can be found
728 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
730 This should only be disabled for special cases where alternate
731 atomicity implementations exist.
734 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
735 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
737 Enabling this option will allow the kernel to implement some
738 atomic operations using a software implementation of load-locked/
739 store-conditional (LLSC). On machines which do not have hardware
740 LLSC, this should be more efficient than the other alternative of
741 disabling interrupts around the atomic sequence.
743 source "drivers/sh/Kconfig"
749 config ZERO_PAGE_OFFSET
751 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
752 SH_7751_SOLUTION_ENGINE
753 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
754 default "0x00002000" if PAGE_SIZE_8KB
757 This sets the default offset of zero page.
759 config BOOT_LINK_OFFSET
761 default "0x00210000" if SH_SHMIN
762 default "0x00400000" if SH_CAYMAN
763 default "0x00810000" if SH_7780_SOLUTION_ENGINE
764 default "0x009e0000" if SH_TITAN
765 default "0x01800000" if SH_SDK7780
766 default "0x02000000" if SH_EDOSK7760
769 This option allows you to set the link address offset of the zImage.
770 This can be useful if you are on a board which has a small amount of
775 default "0x00001000" if PAGE_SIZE_4KB
776 default "0x00002000" if PAGE_SIZE_8KB
777 default "0x00004000" if PAGE_SIZE_16KB
778 default "0x00010000" if PAGE_SIZE_64KB
781 config ROMIMAGE_MMCIF
782 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
783 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
785 Say Y here to include experimental MMCIF loading code in
786 romImage. With this enabled it is possible to write the romImage
787 kernel image to an MMC card and boot the kernel straight from
788 the reset vector. At reset the processor Mask ROM will load the
789 first part of the romImage which in turn loads the rest the kernel
790 image to RAM using the MMCIF hardware block.
793 prompt "Kernel command line"
795 default CMDLINE_OVERWRITE
797 Setting this option allows the kernel command line arguments
800 config CMDLINE_OVERWRITE
801 bool "Overwrite bootloader kernel arguments"
803 Given string will overwrite any arguments passed in by
806 config CMDLINE_EXTEND
807 bool "Extend bootloader kernel arguments"
809 Given string will be concatenated with arguments passed in
815 string "Kernel command line arguments string"
816 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
817 default "console=ttySC1,115200"
824 tristate "SuperHyway Bus support"
825 depends on CPU_SUBTYPE_SH4_202
828 bool "Maple Bus support"
829 depends on SH_DREAMCAST
831 The Maple Bus is SEGA's serial communication bus for peripherals
832 on the Dreamcast. Without this bus support you won't be able to
833 get your Dreamcast keyboard etc to work, so most users
834 probably want to say 'Y' here, unless you are only using the
835 Dreamcast with a serial line terminal or a remote network
840 depends on SYS_SUPPORTS_PCI
843 Find out whether you have a PCI motherboard. PCI is the name of a
844 bus system, i.e. the way the CPU talks to the other stuff inside
845 your box. If you have PCI, say Y, otherwise N.
850 source "drivers/pci/pcie/Kconfig"
852 source "drivers/pci/Kconfig"
854 source "drivers/pcmcia/Kconfig"
856 source "drivers/pci/hotplug/Kconfig"
860 menu "Executable file formats"
862 source "fs/Kconfig.binfmt"
866 menu "Power management options (EXPERIMENTAL)"
867 depends on EXPERIMENTAL
869 source "kernel/power/Kconfig"
871 source "drivers/cpuidle/Kconfig"
877 source "drivers/Kconfig"
881 source "arch/sh/Kconfig.debug"
883 source "security/Kconfig"
885 source "crypto/Kconfig"
887 menuconfig VIRTUALIZATION
888 bool "Virtualization"
891 Say Y here to get to see options for using your Linux host to run other
892 operating systems inside virtual machines (guests).
893 This option alone does not add any kernel code.
895 If you say N, all options in this submenu will be skipped and disabled.
899 source drivers/virtio/Kconfig
901 endif # VIRTUALIZATION