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
20 select HAVE_PERF_EVENTS
21 select PERF_USE_VMALLOC
22 select HAVE_KERNEL_GZIP
23 select HAVE_KERNEL_BZIP2
24 select HAVE_KERNEL_LZMA
25 select HAVE_KERNEL_LZO
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_REGS_AND_STACK_ACCESS_API
29 select GENERIC_ATOMIC64
31 The SuperH is a RISC processor targeted for use in embedded systems
32 and consumer electronics; it was also used in the Sega Dreamcast
33 gaming console. The SuperH port has a home page at
34 <http://www.linux-sh.org/>.
39 select HAVE_KRETPROBES
40 select HAVE_IOREMAP_PROT if MMU && !X2TLB
41 select HAVE_FUNCTION_TRACER
42 select HAVE_FTRACE_MCOUNT_RECORD
43 select HAVE_DYNAMIC_FTRACE
44 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
45 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
46 select HAVE_FUNCTION_GRAPH_TRACER
48 select HAVE_HW_BREAKPOINT
49 select HAVE_MIXED_BREAKPOINTS_REGS
51 select ARCH_HIBERNATION_POSSIBLE if MMU
54 def_bool ARCH = "sh64"
58 default "arch/sh/configs/shx3_defconfig" if SUPERH32
59 default "arch/sh/configs/cayman_defconfig" if SUPERH64
61 config RWSEM_GENERIC_SPINLOCK
64 config RWSEM_XCHGADD_ALGORITHM
69 depends on BUG && SUPERH32
75 config GENERIC_FIND_NEXT_BIT
78 config GENERIC_HWEIGHT
81 config GENERIC_HARDIRQS
84 config GENERIC_HARDIRQS_NO__DO_IRQ
97 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
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
185 config DMA_NONCOHERENT
186 def_bool !DMA_COHERENT
188 config NEED_DMA_MAP_STATE
189 def_bool DMA_NONCOHERENT
191 config NEED_SG_DMA_LENGTH
194 source "init/Kconfig"
196 source "kernel/Kconfig.freezer"
212 select CPU_HAS_INTEVT
214 select SYS_SUPPORTS_TMU
218 select CPU_HAS_INTEVT
220 select CPU_HAS_FPU if !CPU_SH4AL_DSP
221 select SYS_SUPPORTS_TMU
222 select SYS_SUPPORTS_HUGETLBFS if MMU
236 select SYS_SUPPORTS_TMU
237 select SYS_SUPPORTS_HUGETLBFS if MMU
245 select SYS_SUPPORTS_SMP
246 select SYS_SUPPORTS_NUMA
250 select ARCH_SUSPEND_POSSIBLE
255 depends on CPU_SH4 || CPU_SH4A
262 prompt "Processor sub-type selection"
268 # SH-2 Processor Support
270 config CPU_SUBTYPE_SH7619
271 bool "Support SH7619 processor"
273 select SYS_SUPPORTS_CMT
275 # SH-2A Processor Support
277 config CPU_SUBTYPE_SH7201
278 bool "Support SH7201 processor"
281 select SYS_SUPPORTS_MTU2
283 config CPU_SUBTYPE_SH7203
284 bool "Support SH7203 processor"
287 select SYS_SUPPORTS_CMT
288 select SYS_SUPPORTS_MTU2
290 config CPU_SUBTYPE_SH7206
291 bool "Support SH7206 processor"
293 select SYS_SUPPORTS_CMT
294 select SYS_SUPPORTS_MTU2
296 config CPU_SUBTYPE_SH7263
297 bool "Support SH7263 processor"
300 select SYS_SUPPORTS_CMT
301 select SYS_SUPPORTS_MTU2
303 config CPU_SUBTYPE_MXG
304 bool "Support MX-G processor"
306 select SYS_SUPPORTS_MTU2
308 Select MX-G if running on an R8A03022BG part.
310 # SH-3 Processor Support
312 config CPU_SUBTYPE_SH7705
313 bool "Support SH7705 processor"
316 config CPU_SUBTYPE_SH7706
317 bool "Support SH7706 processor"
320 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
322 config CPU_SUBTYPE_SH7707
323 bool "Support SH7707 processor"
326 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
328 config CPU_SUBTYPE_SH7708
329 bool "Support SH7708 processor"
332 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
333 if you have a 100 Mhz SH-3 HD6417708R CPU.
335 config CPU_SUBTYPE_SH7709
336 bool "Support SH7709 processor"
339 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
341 config CPU_SUBTYPE_SH7710
342 bool "Support SH7710 processor"
346 Select SH7710 if you have a SH3-DSP SH7710 CPU.
348 config CPU_SUBTYPE_SH7712
349 bool "Support SH7712 processor"
353 Select SH7712 if you have a SH3-DSP SH7712 CPU.
355 config CPU_SUBTYPE_SH7720
356 bool "Support SH7720 processor"
359 select SYS_SUPPORTS_CMT
361 Select SH7720 if you have a SH3-DSP SH7720 CPU.
363 config CPU_SUBTYPE_SH7721
364 bool "Support SH7721 processor"
367 select SYS_SUPPORTS_CMT
369 Select SH7721 if you have a SH3-DSP SH7721 CPU.
371 # SH-4 Processor Support
373 config CPU_SUBTYPE_SH7750
374 bool "Support SH7750 processor"
377 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
379 config CPU_SUBTYPE_SH7091
380 bool "Support SH7091 processor"
383 Select SH7091 if you have an SH-4 based Sega device (such as
384 the Dreamcast, Naomi, and Naomi 2).
386 config CPU_SUBTYPE_SH7750R
387 bool "Support SH7750R processor"
390 config CPU_SUBTYPE_SH7750S
391 bool "Support SH7750S processor"
394 config CPU_SUBTYPE_SH7751
395 bool "Support SH7751 processor"
398 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
399 or if you have a HD6417751R CPU.
401 config CPU_SUBTYPE_SH7751R
402 bool "Support SH7751R processor"
405 config CPU_SUBTYPE_SH7760
406 bool "Support SH7760 processor"
409 config CPU_SUBTYPE_SH4_202
410 bool "Support SH4-202 processor"
413 # SH-4A Processor Support
415 config CPU_SUBTYPE_SH7723
416 bool "Support SH7723 processor"
420 select ARCH_SPARSEMEM_ENABLE
421 select SYS_SUPPORTS_CMT
423 Select SH7723 if you have an SH-MobileR2 CPU.
425 config CPU_SUBTYPE_SH7724
426 bool "Support SH7724 processor"
430 select ARCH_SPARSEMEM_ENABLE
431 select SYS_SUPPORTS_CMT
433 Select SH7724 if you have an SH-MobileR2R CPU.
435 config CPU_SUBTYPE_SH7757
436 bool "Support SH7757 processor"
440 Select SH7757 if you have a SH4A SH7757 CPU.
442 config CPU_SUBTYPE_SH7763
443 bool "Support SH7763 processor"
446 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
448 config CPU_SUBTYPE_SH7770
449 bool "Support SH7770 processor"
452 config CPU_SUBTYPE_SH7780
453 bool "Support SH7780 processor"
456 config CPU_SUBTYPE_SH7785
457 bool "Support SH7785 processor"
460 select ARCH_SPARSEMEM_ENABLE
461 select SYS_SUPPORTS_NUMA
463 config CPU_SUBTYPE_SH7786
464 bool "Support SH7786 processor"
467 select CPU_HAS_PTEAEX
468 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
470 config CPU_SUBTYPE_SHX3
471 bool "Support SH-X3 processor"
474 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
475 select ARCH_REQUIRE_GPIOLIB
477 # SH4AL-DSP Processor Support
479 config CPU_SUBTYPE_SH7343
480 bool "Support SH7343 processor"
483 select SYS_SUPPORTS_CMT
485 config CPU_SUBTYPE_SH7722
486 bool "Support SH7722 processor"
490 select ARCH_SPARSEMEM_ENABLE
491 select SYS_SUPPORTS_NUMA
492 select SYS_SUPPORTS_CMT
494 config CPU_SUBTYPE_SH7366
495 bool "Support SH7366 processor"
499 select ARCH_SPARSEMEM_ENABLE
500 select SYS_SUPPORTS_NUMA
501 select SYS_SUPPORTS_CMT
510 prompt "Processor sub-type selection"
512 # SH-5 Processor Support
514 config CPU_SUBTYPE_SH5_101
515 bool "Support SH5-101 processor"
518 config CPU_SUBTYPE_SH5_103
519 bool "Support SH5-103 processor"
526 source "arch/sh/mm/Kconfig"
528 source "arch/sh/Kconfig.cpu"
530 source "arch/sh/boards/Kconfig"
532 menu "Timer and clock configuration"
535 bool "TMU timer driver"
536 depends on SYS_SUPPORTS_TMU
539 This enables the build of the TMU timer driver.
542 bool "CMT timer driver"
543 depends on SYS_SUPPORTS_CMT
546 This enables build of the CMT timer driver.
549 bool "MTU2 timer driver"
550 depends on SYS_SUPPORTS_MTU2
553 This enables build of the MTU2 timer driver.
556 int "Peripheral clock frequency (in Hz)"
557 depends on SH_CLK_CPG_LEGACY
558 default "31250000" if CPU_SUBTYPE_SH7619
559 default "33333333" if CPU_SUBTYPE_SH7770 || \
560 CPU_SUBTYPE_SH7760 || \
561 CPU_SUBTYPE_SH7705 || \
562 CPU_SUBTYPE_SH7203 || \
563 CPU_SUBTYPE_SH7206 || \
564 CPU_SUBTYPE_SH7263 || \
566 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
567 default "66000000" if CPU_SUBTYPE_SH4_202
570 This option is used to specify the peripheral clock frequency.
571 This is necessary for determining the reference clock value on
572 platforms lacking an RTC.
577 config SH_CLK_CPG_LEGACY
578 depends on SH_CLK_CPG
579 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
580 !CPU_SHX3 && !CPU_SUBTYPE_SH7757
583 int "CPU Mode Pin Setting"
585 default 6 if CPU_SUBTYPE_SH7206
586 default 5 if CPU_SUBTYPE_SH7619
589 MD2 - MD0 pin setting.
591 source "kernel/time/Kconfig"
595 menu "CPU Frequency scaling"
597 source "drivers/cpufreq/Kconfig"
600 tristate "SuperH CPU Frequency driver"
602 select CPU_FREQ_TABLE
604 This adds the cpufreq driver for SuperH. Any CPU that supports
605 clock rate rounding through the clock framework can use this
606 driver. While it will make the kernel slightly larger, this is
607 harmless for CPUs that don't support rate rounding. The driver
608 will also generate a notice in the boot log before disabling
609 itself if the CPU in question is not capable of rate rounding.
611 For details, take a look at <file:Documentation/cpu-freq>.
617 source "arch/sh/drivers/Kconfig"
621 menu "Kernel features"
623 source kernel/Kconfig.hz
626 bool "kexec system call (EXPERIMENTAL)"
627 depends on SUPERH32 && EXPERIMENTAL && MMU
629 kexec is a system call that implements the ability to shutdown your
630 current kernel, and to start another kernel. It is like a reboot
631 but it is independent of the system firmware. And like a reboot
632 you can start any kernel with it, not just Linux.
634 The name comes from the similarity to the exec system call.
636 It is an ongoing process to be certain the hardware in a machine
637 is properly shutdown, so do not be surprised if this code does not
638 initially work for you. It may help to enable device hotplugging
639 support. As of this writing the exact hardware interface is
640 strongly in flux, so no good recommendation can be made.
643 bool "kernel crash dumps (EXPERIMENTAL)"
644 depends on SUPERH32 && EXPERIMENTAL && BROKEN_ON_SMP
646 Generate crash dump after being started by kexec.
647 This should be normally only set in special crash dump kernels
648 which are loaded in the main kernel with kexec-tools into
649 a specially reserved region and then later executed after
650 a crash by kdump/kexec. The crash dump kernel must be compiled
651 to a memory address not used by the main kernel using
654 For more details see Documentation/kdump/kdump.txt
657 bool "kexec jump (EXPERIMENTAL)"
658 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
660 Jump between original kernel and kexeced kernel and invoke
664 bool "Enable seccomp to safely compute untrusted bytecode"
667 This kernel feature is useful for number crunching applications
668 that may need to compute untrusted bytecode during their
669 execution. By using pipes or other transports made available to
670 the process as file descriptors supporting the read/write
671 syscalls, it's possible to isolate those applications in
672 their own address space using seccomp. Once seccomp is
673 enabled via prctl, it cannot be disabled and the task is only
674 allowed to execute a few safe syscalls defined by each seccomp
680 bool "Symmetric multi-processing support"
681 depends on SYS_SUPPORTS_SMP
682 select USE_GENERIC_SMP_HELPERS
684 This enables support for systems with more than one CPU. If you have
685 a system with only one CPU, like most personal computers, say N. If
686 you have a system with more than one CPU, say Y.
688 If you say N here, the kernel will run on single and multiprocessor
689 machines, but will use only one CPU of a multiprocessor machine. If
690 you say Y here, the kernel will run on many, but not all,
691 singleprocessor machines. On a singleprocessor machine, the kernel
692 will run faster if you say N here.
694 People using multiprocessor machines who say Y here should also say
695 Y to "Enhanced Real Time Clock Support", below.
697 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
698 available at <http://www.tldp.org/docs.html#howto>.
700 If you don't know what to do here, say N.
703 int "Maximum number of CPUs (2-32)"
706 default "4" if CPU_SUBTYPE_SHX3
709 This allows you to specify the maximum number of CPUs which this
710 kernel will support. The maximum supported value is 32 and the
711 minimum value which makes sense is 2.
713 This is purely to save memory - each supported CPU adds
714 approximately eight kilobytes to the kernel image.
717 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
718 depends on SMP && HOTPLUG && EXPERIMENTAL
720 Say Y here to experiment with turning CPUs off and on. CPUs
721 can be controlled through /sys/devices/system/cpu.
723 source "kernel/Kconfig.preempt"
727 depends on !SMP && SUPERH32
729 This enables support for gUSA (general UserSpace Atomicity).
730 This is the default implementation for both UP and non-ll/sc
731 CPUs, and is used by the libc, amongst others.
733 For additional information, design information can be found
734 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
736 This should only be disabled for special cases where alternate
737 atomicity implementations exist.
740 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
741 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
743 Enabling this option will allow the kernel to implement some
744 atomic operations using a software implementation of load-locked/
745 store-conditional (LLSC). On machines which do not have hardware
746 LLSC, this should be more efficient than the other alternative of
747 disabling interrupts around the atomic sequence.
749 config HW_PERF_EVENTS
750 bool "Enable hardware performance counter support for perf events"
751 depends on PERF_EVENTS && CPU_HAS_PMU
754 Enable hardware performance counter support for perf events. If
755 disabled, perf events will use software events only.
757 source "drivers/sh/Kconfig"
763 config ZERO_PAGE_OFFSET
765 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
766 SH_7751_SOLUTION_ENGINE
767 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
768 default "0x00002000" if PAGE_SIZE_8KB
771 This sets the default offset of zero page.
773 config BOOT_LINK_OFFSET
775 default "0x00210000" if SH_SHMIN
776 default "0x00400000" if SH_CAYMAN
777 default "0x00810000" if SH_7780_SOLUTION_ENGINE
778 default "0x009e0000" if SH_TITAN
779 default "0x01800000" if SH_SDK7780
780 default "0x02000000" if SH_EDOSK7760
783 This option allows you to set the link address offset of the zImage.
784 This can be useful if you are on a board which has a small amount of
789 default "0x00001000" if PAGE_SIZE_4KB
790 default "0x00002000" if PAGE_SIZE_8KB
791 default "0x00004000" if PAGE_SIZE_16KB
792 default "0x00010000" if PAGE_SIZE_64KB
795 config ROMIMAGE_MMCIF
796 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
797 depends on CPU_SUBTYPE_SH7724 && EXPERIMENTAL
799 Say Y here to include experimental MMCIF loading code in
800 romImage. With this enabled it is possible to write the romImage
801 kernel image to an MMC card and boot the kernel straight from
802 the reset vector. At reset the processor Mask ROM will load the
803 first part of the romImage which in turn loads the rest the kernel
804 image to RAM using the MMCIF hardware block.
807 prompt "Kernel command line"
809 default CMDLINE_OVERWRITE
811 Setting this option allows the kernel command line arguments
814 config CMDLINE_OVERWRITE
815 bool "Overwrite bootloader kernel arguments"
817 Given string will overwrite any arguments passed in by
820 config CMDLINE_EXTEND
821 bool "Extend bootloader kernel arguments"
823 Given string will be concatenated with arguments passed in
829 string "Kernel command line arguments string"
830 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
831 default "console=ttySC1,115200"
838 tristate "SuperHyway Bus support"
839 depends on CPU_SUBTYPE_SH4_202
842 bool "Maple Bus support"
843 depends on SH_DREAMCAST
845 The Maple Bus is SEGA's serial communication bus for peripherals
846 on the Dreamcast. Without this bus support you won't be able to
847 get your Dreamcast keyboard etc to work, so most users
848 probably want to say 'Y' here, unless you are only using the
849 Dreamcast with a serial line terminal or a remote network
854 depends on SYS_SUPPORTS_PCI
857 Find out whether you have a PCI motherboard. PCI is the name of a
858 bus system, i.e. the way the CPU talks to the other stuff inside
859 your box. If you have PCI, say Y, otherwise N.
864 source "drivers/pci/pcie/Kconfig"
866 source "drivers/pci/Kconfig"
868 source "drivers/pcmcia/Kconfig"
870 source "drivers/pci/hotplug/Kconfig"
874 menu "Executable file formats"
876 source "fs/Kconfig.binfmt"
880 menu "Power management options (EXPERIMENTAL)"
881 depends on EXPERIMENTAL
883 source "kernel/power/Kconfig"
885 source "drivers/cpuidle/Kconfig"
891 source "drivers/Kconfig"
895 source "arch/sh/Kconfig.debug"
897 source "security/Kconfig"
899 source "crypto/Kconfig"
901 menuconfig VIRTUALIZATION
902 bool "Virtualization"
905 Say Y here to get to see options for using your Linux host to run other
906 operating systems inside virtual machines (guests).
907 This option alone does not add any kernel code.
909 If you say N, all options in this submenu will be skipped and disabled.
913 source drivers/virtio/Kconfig
915 endif # VIRTUALIZATION