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
18 The SuperH is a RISC processor targeted for use in embedded systems
19 and consumer electronics; it was also used in the Sega Dreamcast
20 gaming console. The SuperH port has a home page at
21 <http://www.linux-sh.org/>.
26 select HAVE_KRETPROBES
27 select HAVE_FUNCTION_TRACER
28 select HAVE_FTRACE_MCOUNT_RECORD
29 select HAVE_DYNAMIC_FTRACE
37 default "arch/sh/configs/shx3_defconfig" if SUPERH32
38 default "arch/sh/configs/cayman_defconfig" if SUPERH64
40 config RWSEM_GENERIC_SPINLOCK
43 config RWSEM_XCHGADD_ALGORITHM
48 depends on BUG && SUPERH32
50 config GENERIC_FIND_NEXT_BIT
53 config GENERIC_HWEIGHT
56 config GENERIC_HARDIRQS
59 config GENERIC_HARDIRQS_NO__DO_IRQ
62 config GENERIC_IRQ_PROBE
68 config GENERIC_CALIBRATE_DELAY
77 config GENERIC_CLOCKEVENTS
80 config GENERIC_CLOCKEVENTS_BROADCAST
83 config GENERIC_LOCKBREAK
85 depends on SMP && PREEMPT
87 config SYS_SUPPORTS_PM
91 config ARCH_SUSPEND_POSSIBLE
94 config ARCH_HIBERNATION_POSSIBLE
97 config SYS_SUPPORTS_APM_EMULATION
99 select ARCH_SUSPEND_POSSIBLE
101 config SYS_SUPPORTS_SMP
104 config SYS_SUPPORTS_NUMA
107 config SYS_SUPPORTS_PCI
110 config STACKTRACE_SUPPORT
113 config LOCKDEP_SUPPORT
116 config HAVE_LATENCYTOP_SUPPORT
120 config ARCH_HAS_ILOG2_U32
123 config ARCH_HAS_ILOG2_U64
126 config ARCH_NO_VIRT_TO_BUS
132 source "init/Kconfig"
134 source "kernel/Kconfig.freezer"
150 select CPU_HAS_INTEVT
155 select CPU_HAS_INTEVT
157 select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2
158 select CPU_HAS_FPU if !CPU_SH4AL_DSP
180 prompt "Processor sub-type selection"
186 # SH-2 Processor Support
188 config CPU_SUBTYPE_SH7619
189 bool "Support SH7619 processor"
192 # SH-2A Processor Support
194 config CPU_SUBTYPE_SH7201
195 bool "Support SH7201 processor"
199 config CPU_SUBTYPE_SH7203
200 bool "Support SH7203 processor"
204 config CPU_SUBTYPE_SH7206
205 bool "Support SH7206 processor"
208 config CPU_SUBTYPE_SH7263
209 bool "Support SH7263 processor"
213 config CPU_SUBTYPE_MXG
214 bool "Support MX-G processor"
217 Select MX-G if running on an R8A03022BG part.
219 # SH-3 Processor Support
221 config CPU_SUBTYPE_SH7705
222 bool "Support SH7705 processor"
225 config CPU_SUBTYPE_SH7706
226 bool "Support SH7706 processor"
229 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
231 config CPU_SUBTYPE_SH7707
232 bool "Support SH7707 processor"
235 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
237 config CPU_SUBTYPE_SH7708
238 bool "Support SH7708 processor"
241 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
242 if you have a 100 Mhz SH-3 HD6417708R CPU.
244 config CPU_SUBTYPE_SH7709
245 bool "Support SH7709 processor"
248 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
250 config CPU_SUBTYPE_SH7710
251 bool "Support SH7710 processor"
255 Select SH7710 if you have a SH3-DSP SH7710 CPU.
257 config CPU_SUBTYPE_SH7712
258 bool "Support SH7712 processor"
262 Select SH7712 if you have a SH3-DSP SH7712 CPU.
264 config CPU_SUBTYPE_SH7720
265 bool "Support SH7720 processor"
269 Select SH7720 if you have a SH3-DSP SH7720 CPU.
271 config CPU_SUBTYPE_SH7721
272 bool "Support SH7721 processor"
276 Select SH7721 if you have a SH3-DSP SH7721 CPU.
278 # SH-4 Processor Support
280 config CPU_SUBTYPE_SH7750
281 bool "Support SH7750 processor"
284 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
286 config CPU_SUBTYPE_SH7091
287 bool "Support SH7091 processor"
290 Select SH7091 if you have an SH-4 based Sega device (such as
291 the Dreamcast, Naomi, and Naomi 2).
293 config CPU_SUBTYPE_SH7750R
294 bool "Support SH7750R processor"
297 config CPU_SUBTYPE_SH7750S
298 bool "Support SH7750S processor"
301 config CPU_SUBTYPE_SH7751
302 bool "Support SH7751 processor"
305 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
306 or if you have a HD6417751R CPU.
308 config CPU_SUBTYPE_SH7751R
309 bool "Support SH7751R processor"
312 config CPU_SUBTYPE_SH7760
313 bool "Support SH7760 processor"
316 config CPU_SUBTYPE_SH4_202
317 bool "Support SH4-202 processor"
320 # SH-4A Processor Support
322 config CPU_SUBTYPE_SH7723
323 bool "Support SH7723 processor"
326 select ARCH_SPARSEMEM_ENABLE
328 Select SH7723 if you have an SH-MobileR2 CPU.
330 config CPU_SUBTYPE_SH7763
331 bool "Support SH7763 processor"
334 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
336 config CPU_SUBTYPE_SH7770
337 bool "Support SH7770 processor"
340 config CPU_SUBTYPE_SH7780
341 bool "Support SH7780 processor"
344 config CPU_SUBTYPE_SH7785
345 bool "Support SH7785 processor"
348 select ARCH_SPARSEMEM_ENABLE
349 select SYS_SUPPORTS_NUMA
351 config CPU_SUBTYPE_SHX3
352 bool "Support SH-X3 processor"
355 select ARCH_SPARSEMEM_ENABLE
356 select SYS_SUPPORTS_NUMA
357 select SYS_SUPPORTS_SMP
358 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
360 # SH4AL-DSP Processor Support
362 config CPU_SUBTYPE_SH7343
363 bool "Support SH7343 processor"
366 config CPU_SUBTYPE_SH7722
367 bool "Support SH7722 processor"
370 select ARCH_SPARSEMEM_ENABLE
371 select SYS_SUPPORTS_NUMA
373 config CPU_SUBTYPE_SH7366
374 bool "Support SH7366 processor"
377 select ARCH_SPARSEMEM_ENABLE
378 select SYS_SUPPORTS_NUMA
380 # SH-5 Processor Support
382 config CPU_SUBTYPE_SH5_101
383 bool "Support SH5-101 processor"
386 config CPU_SUBTYPE_SH5_103
387 bool "Support SH5-103 processor"
392 source "arch/sh/mm/Kconfig"
394 source "arch/sh/Kconfig.cpu"
396 source "arch/sh/boards/Kconfig"
398 menu "Timer and clock configuration"
404 select GENERIC_CLOCKEVENTS
406 This enables build of the CMT system timer driver.
410 prompt "TMU timer support"
411 depends on CPU_SH3 || CPU_SH4
413 select GENERIC_CLOCKEVENTS
415 This enables the use of the TMU as the system timer.
419 prompt "CMT timer support"
420 depends on CPU_SH2 && !CPU_SUBTYPE_MXG
422 This enables the use of the CMT as the system timer.
426 prompt "MTU2 timer support"
429 This enables the use of the MTU2 as the system timer.
433 default "28" if CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || \
435 default "86" if CPU_SUBTYPE_SH7619
436 default "140" if CPU_SUBTYPE_SH7206
437 default "142" if CPU_SUBTYPE_SH7203
438 default "238" if CPU_SUBTYPE_MXG
442 int "Peripheral clock frequency (in Hz)"
443 default "27000000" if CPU_SUBTYPE_SH7343
444 default "31250000" if CPU_SUBTYPE_SH7619
445 default "32000000" if CPU_SUBTYPE_SH7722
446 default "33333333" if CPU_SUBTYPE_SH7770 || CPU_SUBTYPE_SH7723 || \
447 CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7705 || \
448 CPU_SUBTYPE_SH7203 || CPU_SUBTYPE_SH7206 || \
449 CPU_SUBTYPE_SH7263 || CPU_SUBTYPE_MXG
450 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
451 default "66000000" if CPU_SUBTYPE_SH4_202
454 This option is used to specify the peripheral clock frequency.
455 This is necessary for determining the reference clock value on
456 platforms lacking an RTC.
459 int "CPU Mode Pin Setting"
461 default 6 if CPU_SUBTYPE_SH7206
462 default 5 if CPU_SUBTYPE_SH7619
465 MD2 - MD0 pin setting.
467 source "kernel/time/Kconfig"
471 menu "CPU Frequency scaling"
473 source "drivers/cpufreq/Kconfig"
476 tristate "SuperH CPU Frequency driver"
478 select CPU_FREQ_TABLE
480 This adds the cpufreq driver for SuperH. Any CPU that supports
481 clock rate rounding through the clock framework can use this
482 driver. While it will make the kernel slightly larger, this is
483 harmless for CPUs that don't support rate rounding. The driver
484 will also generate a notice in the boot log before disabling
485 itself if the CPU in question is not capable of rate rounding.
487 For details, take a look at <file:Documentation/cpu-freq>.
493 source "arch/sh/drivers/Kconfig"
497 menu "Kernel features"
499 source kernel/Kconfig.hz
502 bool "kexec system call (EXPERIMENTAL)"
503 depends on SUPERH32 && EXPERIMENTAL
505 kexec is a system call that implements the ability to shutdown your
506 current kernel, and to start another kernel. It is like a reboot
507 but it is independent of the system firmware. And like a reboot
508 you can start any kernel with it, not just Linux.
510 The name comes from the similarity to the exec system call.
512 It is an ongoing process to be certain the hardware in a machine
513 is properly shutdown, so do not be surprised if this code does not
514 initially work for you. It may help to enable device hotplugging
515 support. As of this writing the exact hardware interface is
516 strongly in flux, so no good recommendation can be made.
519 bool "kernel crash dumps (EXPERIMENTAL)"
520 depends on SUPERH32 && EXPERIMENTAL
522 Generate crash dump after being started by kexec.
523 This should be normally only set in special crash dump kernels
524 which are loaded in the main kernel with kexec-tools into
525 a specially reserved region and then later executed after
526 a crash by kdump/kexec. The crash dump kernel must be compiled
527 to a memory address not used by the main kernel using
530 For more details see Documentation/kdump/kdump.txt
533 bool "Enable seccomp to safely compute untrusted bytecode"
536 This kernel feature is useful for number crunching applications
537 that may need to compute untrusted bytecode during their
538 execution. By using pipes or other transports made available to
539 the process as file descriptors supporting the read/write
540 syscalls, it's possible to isolate those applications in
541 their own address space using seccomp. Once seccomp is
542 enabled via prctl, it cannot be disabled and the task is only
543 allowed to execute a few safe syscalls defined by each seccomp
549 bool "Symmetric multi-processing support"
550 depends on SYS_SUPPORTS_SMP
551 select USE_GENERIC_SMP_HELPERS
553 This enables support for systems with more than one CPU. If you have
554 a system with only one CPU, like most personal computers, say N. If
555 you have a system with more than one CPU, say Y.
557 If you say N here, the kernel will run on single and multiprocessor
558 machines, but will use only one CPU of a multiprocessor machine. If
559 you say Y here, the kernel will run on many, but not all,
560 singleprocessor machines. On a singleprocessor machine, the kernel
561 will run faster if you say N here.
563 People using multiprocessor machines who say Y here should also say
564 Y to "Enhanced Real Time Clock Support", below.
566 See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
567 available at <http://www.tldp.org/docs.html#howto>.
569 If you don't know what to do here, say N.
572 int "Maximum number of CPUs (2-32)"
575 default "4" if CPU_SHX3
578 This allows you to specify the maximum number of CPUs which this
579 kernel will support. The maximum supported value is 32 and the
580 minimum value which makes sense is 2.
582 This is purely to save memory - each supported CPU adds
583 approximately eight kilobytes to the kernel image.
585 source "kernel/Kconfig.preempt"
589 depends on !SMP && SUPERH32
591 This enables support for gUSA (general UserSpace Atomicity).
592 This is the default implementation for both UP and non-ll/sc
593 CPUs, and is used by the libc, amongst others.
595 For additional information, design information can be found
596 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
598 This should only be disabled for special cases where alternate
599 atomicity implementations exist.
602 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
603 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
605 Enabling this option will allow the kernel to implement some
606 atomic operations using a software implemention of load-locked/
607 store-conditional (LLSC). On machines which do not have hardware
608 LLSC, this should be more efficient than the other alternative of
609 disabling insterrupts around the atomic sequence.
615 config ZERO_PAGE_OFFSET
616 hex "Zero page offset"
617 default "0x00004000" if SH_SH03
618 default "0x00010000" if PAGE_SIZE_64KB
619 default "0x00002000" if PAGE_SIZE_8KB
622 This sets the default offset of zero page.
624 config BOOT_LINK_OFFSET
625 hex "Link address offset for booting"
628 This option allows you to set the link address offset of the zImage.
629 This can be useful if you are on a board which has a small amount of
633 bool "Wakeup UBC on startup"
634 depends on CPU_SH4 && !CPU_SH4A
636 Selecting this option will wakeup the User Break Controller (UBC) on
637 startup. Although the UBC is left in an awake state when the processor
638 comes up, some boot loaders misbehave by putting the UBC to sleep in a
639 power saving state, which causes issues with things like ptrace().
644 bool "Default bootloader kernel arguments"
647 string "Initial kernel command string"
648 depends on CMDLINE_BOOL
649 default "console=ttySC1,115200"
656 tristate "SuperHyway Bus support"
657 depends on CPU_SUBTYPE_SH4_202
660 bool "Maple Bus support"
661 depends on SH_DREAMCAST
663 The Maple Bus is SEGA's serial communication bus for peripherals
664 on the Dreamcast. Without this bus support you won't be able to
665 get your Dreamcast keyboard etc to work, so most users
666 probably want to say 'Y' here, unless you are only using the
667 Dreamcast with a serial line terminal or a remote network
670 source "arch/sh/drivers/pci/Kconfig"
672 source "drivers/pci/pcie/Kconfig"
674 source "drivers/pci/Kconfig"
676 source "drivers/pcmcia/Kconfig"
678 source "drivers/pci/hotplug/Kconfig"
682 menu "Executable file formats"
684 source "fs/Kconfig.binfmt"
688 menu "Power management options (EXPERIMENTAL)"
689 depends on EXPERIMENTAL
691 source "kernel/power/Kconfig"
693 source "drivers/cpuidle/Kconfig"
699 source "drivers/Kconfig"
703 source "arch/sh/Kconfig.debug"
705 source "security/Kconfig"
707 source "crypto/Kconfig"