2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
6 mainmenu "Linux/SuperH Kernel Configuration"
14 select HAVE_GENERIC_DMA_COHERENT
15 select HAVE_IOREMAP_PROT if MMU
16 select HAVE_ARCH_TRACEHOOK
17 select HAVE_DMA_API_DEBUG
19 The SuperH is a RISC processor targeted for use in embedded systems
20 and consumer electronics; it was also used in the Sega Dreamcast
21 gaming console. The SuperH port has a home page at
22 <http://www.linux-sh.org/>.
27 select HAVE_KRETPROBES
28 select HAVE_FUNCTION_TRACER
29 select HAVE_FTRACE_MCOUNT_RECORD
30 select HAVE_DYNAMIC_FTRACE
32 select ARCH_HIBERNATION_POSSIBLE if MMU
35 def_bool ARCH = "sh64"
39 default "arch/sh/configs/shx3_defconfig" if SUPERH32
40 default "arch/sh/configs/cayman_defconfig" if SUPERH64
42 config RWSEM_GENERIC_SPINLOCK
45 config RWSEM_XCHGADD_ALGORITHM
50 depends on BUG && SUPERH32
52 config GENERIC_FIND_NEXT_BIT
55 config GENERIC_HWEIGHT
58 config GENERIC_HARDIRQS
61 config GENERIC_HARDIRQS_NO__DO_IRQ
64 config GENERIC_IRQ_PROBE
70 config GENERIC_CALIBRATE_DELAY
79 config GENERIC_CLOCKEVENTS
82 config GENERIC_CLOCKEVENTS_BROADCAST
85 config GENERIC_LOCKBREAK
87 depends on SMP && PREEMPT
89 config SYS_SUPPORTS_PM
93 config ARCH_SUSPEND_POSSIBLE
96 config ARCH_HIBERNATION_POSSIBLE
99 config SYS_SUPPORTS_APM_EMULATION
101 select ARCH_SUSPEND_POSSIBLE
103 config SYS_SUPPORTS_SMP
106 config SYS_SUPPORTS_NUMA
109 config SYS_SUPPORTS_PCI
112 config SYS_SUPPORTS_CMT
115 config STACKTRACE_SUPPORT
118 config LOCKDEP_SUPPORT
121 config HAVE_LATENCYTOP_SUPPORT
125 config ARCH_HAS_ILOG2_U32
128 config ARCH_HAS_ILOG2_U64
131 config ARCH_NO_VIRT_TO_BUS
134 config ARCH_HAS_DEFAULT_IDLE
140 source "init/Kconfig"
142 source "kernel/Kconfig.freezer"
158 select CPU_HAS_INTEVT
163 select CPU_HAS_INTEVT
165 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
166 select CPU_HAS_FPU if !CPU_SH4AL_DSP
189 select ARCH_SUSPEND_POSSIBLE
194 prompt "Processor sub-type selection"
200 # SH-2 Processor Support
202 config CPU_SUBTYPE_SH7619
203 bool "Support SH7619 processor"
205 select SYS_SUPPORTS_CMT
207 # SH-2A Processor Support
209 config CPU_SUBTYPE_SH7201
210 bool "Support SH7201 processor"
214 config CPU_SUBTYPE_SH7203
215 bool "Support SH7203 processor"
218 select SYS_SUPPORTS_CMT
220 config CPU_SUBTYPE_SH7206
221 bool "Support SH7206 processor"
223 select SYS_SUPPORTS_CMT
225 config CPU_SUBTYPE_SH7263
226 bool "Support SH7263 processor"
229 select SYS_SUPPORTS_CMT
231 config CPU_SUBTYPE_MXG
232 bool "Support MX-G processor"
235 Select MX-G if running on an R8A03022BG part.
237 # SH-3 Processor Support
239 config CPU_SUBTYPE_SH7705
240 bool "Support SH7705 processor"
243 config CPU_SUBTYPE_SH7706
244 bool "Support SH7706 processor"
247 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
249 config CPU_SUBTYPE_SH7707
250 bool "Support SH7707 processor"
253 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
255 config CPU_SUBTYPE_SH7708
256 bool "Support SH7708 processor"
259 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
260 if you have a 100 Mhz SH-3 HD6417708R CPU.
262 config CPU_SUBTYPE_SH7709
263 bool "Support SH7709 processor"
266 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
268 config CPU_SUBTYPE_SH7710
269 bool "Support SH7710 processor"
273 Select SH7710 if you have a SH3-DSP SH7710 CPU.
275 config CPU_SUBTYPE_SH7712
276 bool "Support SH7712 processor"
280 Select SH7712 if you have a SH3-DSP SH7712 CPU.
282 config CPU_SUBTYPE_SH7720
283 bool "Support SH7720 processor"
287 Select SH7720 if you have a SH3-DSP SH7720 CPU.
289 config CPU_SUBTYPE_SH7721
290 bool "Support SH7721 processor"
294 Select SH7721 if you have a SH3-DSP SH7721 CPU.
296 # SH-4 Processor Support
298 config CPU_SUBTYPE_SH7750
299 bool "Support SH7750 processor"
302 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
304 config CPU_SUBTYPE_SH7091
305 bool "Support SH7091 processor"
308 Select SH7091 if you have an SH-4 based Sega device (such as
309 the Dreamcast, Naomi, and Naomi 2).
311 config CPU_SUBTYPE_SH7750R
312 bool "Support SH7750R processor"
315 config CPU_SUBTYPE_SH7750S
316 bool "Support SH7750S processor"
319 config CPU_SUBTYPE_SH7751
320 bool "Support SH7751 processor"
323 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
324 or if you have a HD6417751R CPU.
326 config CPU_SUBTYPE_SH7751R
327 bool "Support SH7751R processor"
330 config CPU_SUBTYPE_SH7760
331 bool "Support SH7760 processor"
334 config CPU_SUBTYPE_SH4_202
335 bool "Support SH4-202 processor"
338 # SH-4A Processor Support
340 config CPU_SUBTYPE_SH7723
341 bool "Support SH7723 processor"
345 select ARCH_SPARSEMEM_ENABLE
346 select SYS_SUPPORTS_CMT
348 Select SH7723 if you have an SH-MobileR2 CPU.
350 config CPU_SUBTYPE_SH7724
351 bool "Support SH7724 processor"
354 select ARCH_SPARSEMEM_ENABLE
355 select SYS_SUPPORTS_CMT
357 Select SH7724 if you have an SH-MobileR2R CPU.
359 config CPU_SUBTYPE_SH7763
360 bool "Support SH7763 processor"
363 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
365 config CPU_SUBTYPE_SH7770
366 bool "Support SH7770 processor"
369 config CPU_SUBTYPE_SH7780
370 bool "Support SH7780 processor"
373 config CPU_SUBTYPE_SH7785
374 bool "Support SH7785 processor"
377 select ARCH_SPARSEMEM_ENABLE
378 select SYS_SUPPORTS_NUMA
380 config CPU_SUBTYPE_SH7786
381 bool "Support SH7786 processor"
384 select CPU_HAS_PTEAEX
385 select ARCH_SPARSEMEM_ENABLE
386 select SYS_SUPPORTS_NUMA
388 config CPU_SUBTYPE_SHX3
389 bool "Support SH-X3 processor"
392 select ARCH_SPARSEMEM_ENABLE
393 select SYS_SUPPORTS_NUMA
394 select SYS_SUPPORTS_SMP
395 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
397 # SH4AL-DSP Processor Support
399 config CPU_SUBTYPE_SH7343
400 bool "Support SH7343 processor"
403 select SYS_SUPPORTS_CMT
405 config CPU_SUBTYPE_SH7722
406 bool "Support SH7722 processor"
410 select ARCH_SPARSEMEM_ENABLE
411 select SYS_SUPPORTS_NUMA
412 select SYS_SUPPORTS_CMT
414 config CPU_SUBTYPE_SH7366
415 bool "Support SH7366 processor"
419 select ARCH_SPARSEMEM_ENABLE
420 select SYS_SUPPORTS_NUMA
421 select SYS_SUPPORTS_CMT
430 prompt "Processor sub-type selection"
432 # SH-5 Processor Support
434 config CPU_SUBTYPE_SH5_101
435 bool "Support SH5-101 processor"
438 config CPU_SUBTYPE_SH5_103
439 bool "Support SH5-103 processor"
446 source "arch/sh/mm/Kconfig"
448 source "arch/sh/Kconfig.cpu"
450 source "arch/sh/boards/Kconfig"
452 menu "Timer and clock configuration"
455 bool "TMU timer support"
456 depends on CPU_SH3 || CPU_SH4
459 select GENERIC_CLOCKEVENTS
461 This enables the use of the TMU as the system timer.
464 bool "CMT timer support"
465 depends on SYS_SUPPORTS_CMT && CPU_SH2
468 This enables the use of the CMT as the system timer.
471 # Support for the new-style CMT driver. This will replace SH_CMT
472 # once its other dependencies are merged.
475 bool "CMT clockevents driver"
476 depends on SYS_SUPPORTS_CMT && !SH_CMT
477 select GENERIC_CLOCKEVENTS
480 bool "MTU2 timer support"
484 This enables the use of the MTU2 as the system timer.
488 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
490 default "86" if CPU_SUBTYPE_SH7619
491 default "140" if CPU_SUBTYPE_SH7206
492 default "142" if CPU_SUBTYPE_SH7203 && SH_CMT
493 default "153" if CPU_SUBTYPE_SH7203 && SH_MTU2
494 default "238" if CPU_SUBTYPE_MXG
498 int "Peripheral clock frequency (in Hz)"
499 default "27000000" if CPU_SUBTYPE_SH7343
500 default "31250000" if CPU_SUBTYPE_SH7619
501 default "32000000" if CPU_SUBTYPE_SH7722
502 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
503 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
504 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
505 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG || \
507 default "41666666" if CPU_SUBTYPE_SH7724
508 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
509 default "66000000" if CPU_SUBTYPE_SH4_202
512 This option is used to specify the peripheral clock frequency.
513 This is necessary for determining the reference clock value on
514 platforms lacking an RTC.
517 int "CPU Mode Pin Setting"
519 default 6 if CPU_SUBTYPE_SH7206
520 default 5 if CPU_SUBTYPE_SH7619
523 MD2 - MD0 pin setting.
525 source "kernel/time/Kconfig"
529 menu "CPU Frequency scaling"
531 source "drivers/cpufreq/Kconfig"
534 tristate "SuperH CPU Frequency driver"
536 select CPU_FREQ_TABLE
538 This adds the cpufreq driver for SuperH. Any CPU that supports
539 clock rate rounding through the clock framework can use this
540 driver. While it will make the kernel slightly larger, this is
541 harmless for CPUs that don't support rate rounding. The driver
542 will also generate a notice in the boot log before disabling
543 itself if the CPU in question is not capable of rate rounding.
545 For details, take a look at <file:Documentation/cpu-freq>.
551 source "arch/sh/drivers/Kconfig"
555 menu "Kernel features"
557 source kernel/Kconfig.hz
560 bool "kexec system call (EXPERIMENTAL)"
561 depends on SUPERH32 && EXPERIMENTAL && MMU
563 kexec is a system call that implements the ability to shutdown your
564 current kernel, and to start another kernel. It is like a reboot
565 but it is independent of the system firmware. And like a reboot
566 you can start any kernel with it, not just Linux.
568 The name comes from the similarity to the exec system call.
570 It is an ongoing process to be certain the hardware in a machine
571 is properly shutdown, so do not be surprised if this code does not
572 initially work for you. It may help to enable device hotplugging
573 support. As of this writing the exact hardware interface is
574 strongly in flux, so no good recommendation can be made.
577 bool "kernel crash dumps (EXPERIMENTAL)"
578 depends on SUPERH32 && EXPERIMENTAL
580 Generate crash dump after being started by kexec.
581 This should be normally only set in special crash dump kernels
582 which are loaded in the main kernel with kexec-tools into
583 a specially reserved region and then later executed after
584 a crash by kdump/kexec. The crash dump kernel must be compiled
585 to a memory address not used by the main kernel using
588 For more details see Documentation/kdump/kdump.txt
591 bool "kexec jump (EXPERIMENTAL)"
592 depends on SUPERH32 && KEXEC && HIBERNATION && EXPERIMENTAL
594 Jump between original kernel and kexeced kernel and invoke
598 bool "Enable seccomp to safely compute untrusted bytecode"
601 This kernel feature is useful for number crunching applications
602 that may need to compute untrusted bytecode during their
603 execution. By using pipes or other transports made available to
604 the process as file descriptors supporting the read/write
605 syscalls, it's possible to isolate those applications in
606 their own address space using seccomp. Once seccomp is
607 enabled via prctl, it cannot be disabled and the task is only
608 allowed to execute a few safe syscalls defined by each seccomp
614 bool "Symmetric multi-processing support"
615 depends on SYS_SUPPORTS_SMP
616 select USE_GENERIC_SMP_HELPERS
618 This enables support for systems with more than one CPU. If you have
619 a system with only one CPU, like most personal computers, say N. If
620 you have a system with more than one CPU, say Y.
622 If you say N here, the kernel will run on single and multiprocessor
623 machines, but will use only one CPU of a multiprocessor machine. If
624 you say Y here, the kernel will run on many, but not all,
625 singleprocessor machines. On a singleprocessor machine, the kernel
626 will run faster if you say N here.
628 People using multiprocessor machines who say Y here should also say
629 Y to "Enhanced Real Time Clock Support", below.
631 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
632 available at <http://www.tldp.org/docs.html#howto>.
634 If you don't know what to do here, say N.
637 int "Maximum number of CPUs (2-32)"
640 default "4" if CPU_SHX3
643 This allows you to specify the maximum number of CPUs which this
644 kernel will support. The maximum supported value is 32 and the
645 minimum value which makes sense is 2.
647 This is purely to save memory - each supported CPU adds
648 approximately eight kilobytes to the kernel image.
650 source "kernel/Kconfig.preempt"
654 depends on !SMP && SUPERH32
656 This enables support for gUSA (general UserSpace Atomicity).
657 This is the default implementation for both UP and non-ll/sc
658 CPUs, and is used by the libc, amongst others.
660 For additional information, design information can be found
661 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
663 This should only be disabled for special cases where alternate
664 atomicity implementations exist.
667 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
668 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
670 Enabling this option will allow the kernel to implement some
671 atomic operations using a software implementation of load-locked/
672 store-conditional (LLSC). On machines which do not have hardware
673 LLSC, this should be more efficient than the other alternative of
674 disabling interrupts around the atomic sequence.
680 config ZERO_PAGE_OFFSET
681 hex "Zero page offset"
682 default "0x00004000" if SH_SH03
683 default "0x00010000" if PAGE_SIZE_64KB
684 default "0x00002000" if PAGE_SIZE_8KB
687 This sets the default offset of zero page.
689 config BOOT_LINK_OFFSET
690 hex "Link address offset for booting"
693 This option allows you to set the link address offset of the zImage.
694 This can be useful if you are on a board which has a small amount of
698 bool "Wakeup UBC on startup"
699 depends on CPU_SH4 && !CPU_SH4A
701 Selecting this option will wakeup the User Break Controller (UBC) on
702 startup. Although the UBC is left in an awake state when the processor
703 comes up, some boot loaders misbehave by putting the UBC to sleep in a
704 power saving state, which causes issues with things like ptrace().
709 bool "Default bootloader kernel arguments"
712 string "Initial kernel command string"
713 depends on CMDLINE_BOOL
714 default "console=ttySC1,115200"
721 tristate "SuperHyway Bus support"
722 depends on CPU_SUBTYPE_SH4_202
725 bool "Maple Bus support"
726 depends on SH_DREAMCAST
728 The Maple Bus is SEGA's serial communication bus for peripherals
729 on the Dreamcast. Without this bus support you won't be able to
730 get your Dreamcast keyboard etc to work, so most users
731 probably want to say 'Y' here, unless you are only using the
732 Dreamcast with a serial line terminal or a remote network
735 source "arch/sh/drivers/pci/Kconfig"
737 source "drivers/pci/pcie/Kconfig"
739 source "drivers/pci/Kconfig"
741 source "drivers/pcmcia/Kconfig"
743 source "drivers/pci/hotplug/Kconfig"
747 menu "Executable file formats"
749 source "fs/Kconfig.binfmt"
753 menu "Power management options (EXPERIMENTAL)"
754 depends on EXPERIMENTAL
756 source "kernel/power/Kconfig"
758 source "drivers/cpuidle/Kconfig"
764 source "drivers/Kconfig"
768 source "arch/sh/Kconfig.debug"
770 source "security/Kconfig"
772 source "crypto/Kconfig"