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_IOREMAP_PROT if MMU
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_DMA_API_DEBUG
20 select HAVE_PERF_EVENTS
21 select HAVE_KERNEL_GZIP
22 select HAVE_KERNEL_BZIP2
23 select HAVE_KERNEL_LZMA
24 select HAVE_SYSCALL_TRACEPOINTS
26 select GENERIC_ATOMIC64
28 The SuperH is a RISC processor targeted for use in embedded systems
29 and consumer electronics; it was also used in the Sega Dreamcast
30 gaming console. The SuperH port has a home page at
31 <http://www.linux-sh.org/>.
36 select HAVE_KRETPROBES
37 select HAVE_FUNCTION_TRACER
38 select HAVE_FTRACE_MCOUNT_RECORD
39 select HAVE_DYNAMIC_FTRACE
40 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
41 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
42 select HAVE_FUNCTION_GRAPH_TRACER
44 select ARCH_HIBERNATION_POSSIBLE if MMU
47 def_bool ARCH = "sh64"
51 default "arch/sh/configs/shx3_defconfig" if SUPERH32
52 default "arch/sh/configs/cayman_defconfig" if SUPERH64
54 config RWSEM_GENERIC_SPINLOCK
57 config RWSEM_XCHGADD_ALGORITHM
62 depends on BUG && SUPERH32
68 config GENERIC_FIND_NEXT_BIT
71 config GENERIC_HWEIGHT
74 config GENERIC_HARDIRQS
77 config GENERIC_HARDIRQS_NO__DO_IRQ
80 config GENERIC_IRQ_PROBE
89 config GENERIC_CALIBRATE_DELAY
98 config GENERIC_CLOCKEVENTS
101 config GENERIC_CLOCKEVENTS_BROADCAST
104 config GENERIC_CMOS_UPDATE
106 depends on SH_SH03 || SH_DREAMCAST
108 config GENERIC_LOCKBREAK
110 depends on SMP && PREEMPT
112 config SYS_SUPPORTS_PM
116 config ARCH_SUSPEND_POSSIBLE
119 config ARCH_HIBERNATION_POSSIBLE
122 config SYS_SUPPORTS_APM_EMULATION
124 select ARCH_SUSPEND_POSSIBLE
126 config SYS_SUPPORTS_SMP
129 config SYS_SUPPORTS_NUMA
132 config SYS_SUPPORTS_PCI
135 config SYS_SUPPORTS_CMT
138 config SYS_SUPPORTS_MTU2
141 config SYS_SUPPORTS_TMU
144 config STACKTRACE_SUPPORT
147 config LOCKDEP_SUPPORT
150 config HAVE_LATENCYTOP_SUPPORT
154 config ARCH_HAS_ILOG2_U32
157 config ARCH_HAS_ILOG2_U64
160 config ARCH_NO_VIRT_TO_BUS
163 config ARCH_HAS_DEFAULT_IDLE
166 config ARCH_HAS_CPU_IDLE_WAIT
175 config DMA_NONCOHERENT
176 def_bool !DMA_COHERENT
178 source "init/Kconfig"
180 source "kernel/Kconfig.freezer"
196 select CPU_HAS_INTEVT
198 select SYS_SUPPORTS_TMU
202 select CPU_HAS_INTEVT
204 select CPU_HAS_FPU if !CPU_SH4AL_DSP
205 select SYS_SUPPORTS_TMU
219 select SYS_SUPPORTS_TMU
230 select ARCH_SUSPEND_POSSIBLE
237 prompt "Processor sub-type selection"
243 # SH-2 Processor Support
245 config CPU_SUBTYPE_SH7619
246 bool "Support SH7619 processor"
248 select SYS_SUPPORTS_CMT
250 # SH-2A Processor Support
252 config CPU_SUBTYPE_SH7201
253 bool "Support SH7201 processor"
256 select SYS_SUPPORTS_MTU2
258 config CPU_SUBTYPE_SH7203
259 bool "Support SH7203 processor"
262 select SYS_SUPPORTS_CMT
263 select SYS_SUPPORTS_MTU2
265 config CPU_SUBTYPE_SH7206
266 bool "Support SH7206 processor"
268 select SYS_SUPPORTS_CMT
269 select SYS_SUPPORTS_MTU2
271 config CPU_SUBTYPE_SH7263
272 bool "Support SH7263 processor"
275 select SYS_SUPPORTS_CMT
276 select SYS_SUPPORTS_MTU2
278 config CPU_SUBTYPE_MXG
279 bool "Support MX-G processor"
281 select SYS_SUPPORTS_MTU2
283 Select MX-G if running on an R8A03022BG part.
285 # SH-3 Processor Support
287 config CPU_SUBTYPE_SH7705
288 bool "Support SH7705 processor"
291 config CPU_SUBTYPE_SH7706
292 bool "Support SH7706 processor"
295 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
297 config CPU_SUBTYPE_SH7707
298 bool "Support SH7707 processor"
301 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
303 config CPU_SUBTYPE_SH7708
304 bool "Support SH7708 processor"
307 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
308 if you have a 100 Mhz SH-3 HD6417708R CPU.
310 config CPU_SUBTYPE_SH7709
311 bool "Support SH7709 processor"
314 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
316 config CPU_SUBTYPE_SH7710
317 bool "Support SH7710 processor"
321 Select SH7710 if you have a SH3-DSP SH7710 CPU.
323 config CPU_SUBTYPE_SH7712
324 bool "Support SH7712 processor"
328 Select SH7712 if you have a SH3-DSP SH7712 CPU.
330 config CPU_SUBTYPE_SH7720
331 bool "Support SH7720 processor"
334 select SYS_SUPPORTS_CMT
336 Select SH7720 if you have a SH3-DSP SH7720 CPU.
338 config CPU_SUBTYPE_SH7721
339 bool "Support SH7721 processor"
342 select SYS_SUPPORTS_CMT
344 Select SH7721 if you have a SH3-DSP SH7721 CPU.
346 # SH-4 Processor Support
348 config CPU_SUBTYPE_SH7750
349 bool "Support SH7750 processor"
352 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
354 config CPU_SUBTYPE_SH7091
355 bool "Support SH7091 processor"
358 Select SH7091 if you have an SH-4 based Sega device (such as
359 the Dreamcast, Naomi, and Naomi 2).
361 config CPU_SUBTYPE_SH7750R
362 bool "Support SH7750R processor"
365 config CPU_SUBTYPE_SH7750S
366 bool "Support SH7750S processor"
369 config CPU_SUBTYPE_SH7751
370 bool "Support SH7751 processor"
373 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
374 or if you have a HD6417751R CPU.
376 config CPU_SUBTYPE_SH7751R
377 bool "Support SH7751R processor"
380 config CPU_SUBTYPE_SH7760
381 bool "Support SH7760 processor"
384 config CPU_SUBTYPE_SH4_202
385 bool "Support SH4-202 processor"
388 # SH-4A Processor Support
390 config CPU_SUBTYPE_SH7723
391 bool "Support SH7723 processor"
395 select ARCH_SPARSEMEM_ENABLE
396 select SYS_SUPPORTS_CMT
398 Select SH7723 if you have an SH-MobileR2 CPU.
400 config CPU_SUBTYPE_SH7724
401 bool "Support SH7724 processor"
405 select ARCH_SPARSEMEM_ENABLE
406 select SYS_SUPPORTS_CMT
408 Select SH7724 if you have an SH-MobileR2R CPU.
410 config CPU_SUBTYPE_SH7757
411 bool "Support SH7757 processor"
415 Select SH7757 if you have a SH4A SH7757 CPU.
417 config CPU_SUBTYPE_SH7763
418 bool "Support SH7763 processor"
421 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
423 config CPU_SUBTYPE_SH7770
424 bool "Support SH7770 processor"
427 config CPU_SUBTYPE_SH7780
428 bool "Support SH7780 processor"
431 config CPU_SUBTYPE_SH7785
432 bool "Support SH7785 processor"
435 select ARCH_SPARSEMEM_ENABLE
436 select SYS_SUPPORTS_NUMA
438 config CPU_SUBTYPE_SH7786
439 bool "Support SH7786 processor"
442 select CPU_HAS_PTEAEX
443 select ARCH_SPARSEMEM_ENABLE
444 select SYS_SUPPORTS_NUMA
445 select SYS_SUPPORTS_SMP
446 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
448 config CPU_SUBTYPE_SHX3
449 bool "Support SH-X3 processor"
452 select ARCH_SPARSEMEM_ENABLE
453 select SYS_SUPPORTS_NUMA
454 select SYS_SUPPORTS_SMP
455 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
457 # SH4AL-DSP Processor Support
459 config CPU_SUBTYPE_SH7343
460 bool "Support SH7343 processor"
463 select SYS_SUPPORTS_CMT
465 config CPU_SUBTYPE_SH7722
466 bool "Support SH7722 processor"
470 select ARCH_SPARSEMEM_ENABLE
471 select SYS_SUPPORTS_NUMA
472 select SYS_SUPPORTS_CMT
474 config CPU_SUBTYPE_SH7366
475 bool "Support SH7366 processor"
479 select ARCH_SPARSEMEM_ENABLE
480 select SYS_SUPPORTS_NUMA
481 select SYS_SUPPORTS_CMT
490 prompt "Processor sub-type selection"
492 # SH-5 Processor Support
494 config CPU_SUBTYPE_SH5_101
495 bool "Support SH5-101 processor"
498 config CPU_SUBTYPE_SH5_103
499 bool "Support SH5-103 processor"
506 source "arch/sh/mm/Kconfig"
508 source "arch/sh/Kconfig.cpu"
510 source "arch/sh/boards/Kconfig"
512 menu "Timer and clock configuration"
515 bool "TMU timer driver"
516 depends on SYS_SUPPORTS_TMU
519 This enables the build of the TMU timer driver.
522 bool "CMT timer driver"
523 depends on SYS_SUPPORTS_CMT
526 This enables build of the CMT timer driver.
529 bool "MTU2 timer driver"
530 depends on SYS_SUPPORTS_MTU2
533 This enables build of the MTU2 timer driver.
536 int "Peripheral clock frequency (in Hz)"
537 default "27000000" if CPU_SUBTYPE_SH7343
538 default "31250000" if CPU_SUBTYPE_SH7619
539 default "32000000" if CPU_SUBTYPE_SH7722
540 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
541 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
542 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
543 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
544 CPU_SUBTYPE_SH7786 || CPU_SUBTYPE_SH7724
545 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
546 default "66000000" if CPU_SUBTYPE_SH4_202
549 This option is used to specify the peripheral clock frequency.
550 This is necessary for determining the reference clock value on
551 platforms lacking an RTC.
556 config SH_CLK_CPG_LEGACY
557 depends on SH_CLK_CPG
558 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE
561 int "CPU Mode Pin Setting"
563 default 6 if CPU_SUBTYPE_SH7206
564 default 5 if CPU_SUBTYPE_SH7619
567 MD2 - MD0 pin setting.
569 source "kernel/time/Kconfig"
573 menu "CPU Frequency scaling"
575 source "drivers/cpufreq/Kconfig"
578 tristate "SuperH CPU Frequency driver"
580 select CPU_FREQ_TABLE
582 This adds the cpufreq driver for SuperH. Any CPU that supports
583 clock rate rounding through the clock framework can use this
584 driver. While it will make the kernel slightly larger, this is
585 harmless for CPUs that don't support rate rounding. The driver
586 will also generate a notice in the boot log before disabling
587 itself if the CPU in question is not capable of rate rounding.
589 For details, take a look at <file:Documentation/cpu-freq>.
595 source "arch/sh/drivers/Kconfig"
599 menu "Kernel features"
601 source kernel/Kconfig.hz
604 bool "kexec system call (EXPERIMENTAL)"
605 depends on SUPERH32 && EXPERIMENTAL && MMU
607 kexec is a system call that implements the ability to shutdown your
608 current kernel, and to start another kernel. It is like a reboot
609 but it is independent of the system firmware. And like a reboot
610 you can start any kernel with it, not just Linux.
612 The name comes from the similarity to the exec system call.
614 It is an ongoing process to be certain the hardware in a machine
615 is properly shutdown, so do not be surprised if this code does not
616 initially work for you. It may help to enable device hotplugging
617 support. As of this writing the exact hardware interface is
618 strongly in flux, so no good recommendation can be made.
621 bool "kernel crash dumps (EXPERIMENTAL)"
622 depends on SUPERH32 && EXPERIMENTAL
624 Generate crash dump after being started by kexec.
625 This should be normally only set in special crash dump kernels
626 which are loaded in the main kernel with kexec-tools into
627 a specially reserved region and then later executed after
628 a crash by kdump/kexec. The crash dump kernel must be compiled
629 to a memory address not used by the main kernel using
632 For more details see Documentation/kdump/kdump.txt
635 bool "kexec jump (EXPERIMENTAL)"
636 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
638 Jump between original kernel and kexeced kernel and invoke
642 bool "Enable seccomp to safely compute untrusted bytecode"
645 This kernel feature is useful for number crunching applications
646 that may need to compute untrusted bytecode during their
647 execution. By using pipes or other transports made available to
648 the process as file descriptors supporting the read/write
649 syscalls, it's possible to isolate those applications in
650 their own address space using seccomp. Once seccomp is
651 enabled via prctl, it cannot be disabled and the task is only
652 allowed to execute a few safe syscalls defined by each seccomp
658 bool "Symmetric multi-processing support"
659 depends on SYS_SUPPORTS_SMP
660 select USE_GENERIC_SMP_HELPERS
662 This enables support for systems with more than one CPU. If you have
663 a system with only one CPU, like most personal computers, say N. If
664 you have a system with more than one CPU, say Y.
666 If you say N here, the kernel will run on single and multiprocessor
667 machines, but will use only one CPU of a multiprocessor machine. If
668 you say Y here, the kernel will run on many, but not all,
669 singleprocessor machines. On a singleprocessor machine, the kernel
670 will run faster if you say N here.
672 People using multiprocessor machines who say Y here should also say
673 Y to "Enhanced Real Time Clock Support", below.
675 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
676 available at <http://www.tldp.org/docs.html#howto>.
678 If you don't know what to do here, say N.
681 int "Maximum number of CPUs (2-32)"
684 default "4" if CPU_SUBTYPE_SHX3
687 This allows you to specify the maximum number of CPUs which this
688 kernel will support. The maximum supported value is 32 and the
689 minimum value which makes sense is 2.
691 This is purely to save memory - each supported CPU adds
692 approximately eight kilobytes to the kernel image.
694 source "kernel/Kconfig.preempt"
698 depends on !SMP && SUPERH32
700 This enables support for gUSA (general UserSpace Atomicity).
701 This is the default implementation for both UP and non-ll/sc
702 CPUs, and is used by the libc, amongst others.
704 For additional information, design information can be found
705 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
707 This should only be disabled for special cases where alternate
708 atomicity implementations exist.
711 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
712 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
714 Enabling this option will allow the kernel to implement some
715 atomic operations using a software implementation of load-locked/
716 store-conditional (LLSC). On machines which do not have hardware
717 LLSC, this should be more efficient than the other alternative of
718 disabling interrupts around the atomic sequence.
721 bool "Support sparse irq numbering"
722 depends on EXPERIMENTAL
724 This enables support for sparse irqs. This is useful in general
725 as most CPUs have a fairly sparse array of IRQ vectors, which
726 the irq_desc then maps directly on to. Systems with a high
727 number of off-chip IRQs will want to treat this as
728 experimental until they have been independently verified.
730 If you don't know what to do here, say N.
736 config ZERO_PAGE_OFFSET
738 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
739 SH_7751_SOLUTION_ENGINE
740 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
741 default "0x00002000" if PAGE_SIZE_8KB
744 This sets the default offset of zero page.
746 config BOOT_LINK_OFFSET
748 default "0x00210000" if SH_SHMIN
749 default "0x00400000" if SH_CAYMAN
750 default "0x00810000" if SH_7780_SOLUTION_ENGINE
751 default "0x009e0000" if SH_TITAN
752 default "0x01800000" if SH_SDK7780
753 default "0x02000000" if SH_EDOSK7760
756 This option allows you to set the link address offset of the zImage.
757 This can be useful if you are on a board which has a small amount of
762 default "0x00001000" if PAGE_SIZE_4KB
763 default "0x00002000" if PAGE_SIZE_8KB
764 default "0x00004000" if PAGE_SIZE_16KB
765 default "0x00010000" if PAGE_SIZE_64KB
769 prompt "Kernel command line"
771 default CMDLINE_OVERWRITE
773 Setting this option allows the kernel command line arguments
776 config CMDLINE_OVERWRITE
777 bool "Overwrite bootloader kernel arguments"
779 Given string will overwrite any arguments passed in by
782 config CMDLINE_EXTEND
783 bool "Extend bootloader kernel arguments"
785 Given string will be concatenated with arguments passed in
791 string "Kernel command line arguments string"
792 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
793 default "console=ttySC1,115200"
800 tristate "SuperHyway Bus support"
801 depends on CPU_SUBTYPE_SH4_202
804 bool "Maple Bus support"
805 depends on SH_DREAMCAST
807 The Maple Bus is SEGA's serial communication bus for peripherals
808 on the Dreamcast. Without this bus support you won't be able to
809 get your Dreamcast keyboard etc to work, so most users
810 probably want to say 'Y' here, unless you are only using the
811 Dreamcast with a serial line terminal or a remote network
814 source "arch/sh/drivers/pci/Kconfig"
816 source "drivers/pci/pcie/Kconfig"
818 source "drivers/pci/Kconfig"
820 source "drivers/pcmcia/Kconfig"
822 source "drivers/pci/hotplug/Kconfig"
826 menu "Executable file formats"
828 source "fs/Kconfig.binfmt"
832 menu "Power management options (EXPERIMENTAL)"
833 depends on EXPERIMENTAL
835 source "kernel/power/Kconfig"
837 source "drivers/cpuidle/Kconfig"
843 source "drivers/Kconfig"
847 source "arch/sh/Kconfig.debug"
849 source "security/Kconfig"
851 source "crypto/Kconfig"