1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_HAS_PTE_SPECIAL
5 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
6 select ARCH_MIGHT_HAVE_PC_PARPORT
7 select ARCH_NO_COHERENT_DMA_MMAP if !MMU
8 select HAVE_PATA_PLATFORM
10 select HAVE_IDE if HAS_IOPORT_MAP
11 select HAVE_MEMBLOCK_NODE_MAP
12 select ARCH_DISCARD_MEMBLOCK
14 select HAVE_GENERIC_DMA_COHERENT
15 select HAVE_ARCH_TRACEHOOK
16 select HAVE_PERF_EVENTS
17 select HAVE_DEBUG_BUGVERBOSE
18 select ARCH_HAVE_CUSTOM_GPIO_H
19 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
20 select ARCH_HAS_GCOV_PROFILE_ALL
21 select PERF_USE_VMALLOC
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_KERNEL_GZIP
24 select CPU_NO_EFFICIENT_FFS
25 select HAVE_KERNEL_BZIP2
26 select HAVE_KERNEL_LZMA
28 select HAVE_KERNEL_LZO
30 select ARCH_WANT_IPC_PARSE_VERSION
31 select HAVE_SYSCALL_TRACEPOINTS
32 select HAVE_REGS_AND_STACK_ACCESS_API
33 select MAY_HAVE_SPARSE_IRQ
34 select IRQ_FORCED_THREADING
36 select GENERIC_ATOMIC64
37 select GENERIC_IRQ_SHOW
38 select GENERIC_SMP_IDLE_THREAD
39 select GENERIC_IDLE_POLL_SETUP
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
42 select GENERIC_PCI_IOMAP if PCI
43 select GENERIC_SCHED_CLOCK
44 select GENERIC_STRNCPY_FROM_USER
45 select GENERIC_STRNLEN_USER
46 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
47 select MODULES_USE_ELF_RELA
48 select NO_GENERIC_PCI_IOPORT_MAP if PCI
51 select PCI_DOMAINS if PCI
52 select HAVE_ARCH_AUDITSYSCALL
53 select HAVE_FUTEX_CMPXCHG if FUTEX
55 select NEED_SG_DMA_LENGTH
58 The SuperH is a RISC processor targeted for use in embedded systems
59 and consumer electronics; it was also used in the Sega Dreamcast
60 gaming console. The SuperH port has a home page at
61 <http://www.linux-sh.org/>.
64 def_bool "$(ARCH)" = "sh"
66 select HAVE_KRETPROBES
67 select HAVE_IOREMAP_PROT if MMU && !X2TLB
68 select HAVE_FUNCTION_TRACER
69 select HAVE_FTRACE_MCOUNT_RECORD
70 select HAVE_DYNAMIC_FTRACE
71 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
72 select ARCH_WANT_IPC_PARSE_VERSION
73 select HAVE_FUNCTION_GRAPH_TRACER
75 select HAVE_HW_BREAKPOINT
76 select HAVE_MIXED_BREAKPOINTS_REGS
78 select ARCH_HIBERNATION_POSSIBLE if MMU
80 select HAVE_STACKPROTECTOR
83 def_bool "$(ARCH)" = "sh64"
84 select HAVE_EXIT_THREAD
89 default "arch/sh/configs/shx3_defconfig" if SUPERH32
90 default "arch/sh/configs/cayman_defconfig" if SUPERH64
92 config RWSEM_GENERIC_SPINLOCK
95 config RWSEM_XCHGADD_ALGORITHM
100 depends on BUG && SUPERH32
106 config GENERIC_HWEIGHT
109 config GENERIC_CALIBRATE_DELAY
112 config GENERIC_LOCKBREAK
114 depends on SMP && PREEMPT
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_HUGETLBFS
129 config SYS_SUPPORTS_SMP
132 config SYS_SUPPORTS_NUMA
135 config STACKTRACE_SUPPORT
138 config LOCKDEP_SUPPORT
141 config ARCH_HAS_ILOG2_U32
144 config ARCH_HAS_ILOG2_U64
149 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
150 !SH_HP6XX && !SH_SOLUTION_ENGINE
161 config DMA_NONCOHERENT
162 def_bool !DMA_COHERENT
163 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
165 config PGTABLE_LEVELS
181 select UNCACHED_MAPPING
187 select OF_EARLY_FLATTREE
191 select CPU_HAS_INTEVT
194 select SYS_SUPPORTS_SH_TMU
198 select CPU_HAS_INTEVT
200 select CPU_HAS_FPU if !CPU_SH4AL_DSP
202 select SYS_SUPPORTS_SH_TMU
203 select SYS_SUPPORTS_HUGETLBFS if MMU
217 select SYS_SUPPORTS_SH_TMU
218 select SYS_SUPPORTS_HUGETLBFS if MMU
226 select SYS_SUPPORTS_SMP
227 select SYS_SUPPORTS_NUMA
231 select ARCH_SUSPEND_POSSIBLE
235 depends on CPU_SH4 || CPU_SH4A
242 prompt "Processor sub-type selection"
248 # SH-2 Processor Support
250 config CPU_SUBTYPE_SH7619
251 bool "Support SH7619 processor"
253 select SYS_SUPPORTS_SH_CMT
255 config CPU_SUBTYPE_J2
256 bool "Support J2 processor"
258 select SYS_SUPPORTS_SMP
259 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
261 # SH-2A Processor Support
263 config CPU_SUBTYPE_SH7201
264 bool "Support SH7201 processor"
267 select SYS_SUPPORTS_SH_MTU2
269 config CPU_SUBTYPE_SH7203
270 bool "Support SH7203 processor"
273 select SYS_SUPPORTS_SH_CMT
274 select SYS_SUPPORTS_SH_MTU2
277 config CPU_SUBTYPE_SH7206
278 bool "Support SH7206 processor"
280 select SYS_SUPPORTS_SH_CMT
281 select SYS_SUPPORTS_SH_MTU2
283 config CPU_SUBTYPE_SH7263
284 bool "Support SH7263 processor"
287 select SYS_SUPPORTS_SH_CMT
288 select SYS_SUPPORTS_SH_MTU2
290 config CPU_SUBTYPE_SH7264
291 bool "Support SH7264 processor"
294 select SYS_SUPPORTS_SH_CMT
295 select SYS_SUPPORTS_SH_MTU2
298 config CPU_SUBTYPE_SH7269
299 bool "Support SH7269 processor"
302 select SYS_SUPPORTS_SH_CMT
303 select SYS_SUPPORTS_SH_MTU2
306 config CPU_SUBTYPE_MXG
307 bool "Support MX-G processor"
309 select SYS_SUPPORTS_SH_MTU2
311 Select MX-G if running on an R8A03022BG part.
313 # SH-3 Processor Support
315 config CPU_SUBTYPE_SH7705
316 bool "Support SH7705 processor"
319 config CPU_SUBTYPE_SH7706
320 bool "Support SH7706 processor"
323 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
325 config CPU_SUBTYPE_SH7707
326 bool "Support SH7707 processor"
329 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
331 config CPU_SUBTYPE_SH7708
332 bool "Support SH7708 processor"
335 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
336 if you have a 100 Mhz SH-3 HD6417708R CPU.
338 config CPU_SUBTYPE_SH7709
339 bool "Support SH7709 processor"
342 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
344 config CPU_SUBTYPE_SH7710
345 bool "Support SH7710 processor"
349 Select SH7710 if you have a SH3-DSP SH7710 CPU.
351 config CPU_SUBTYPE_SH7712
352 bool "Support SH7712 processor"
356 Select SH7712 if you have a SH3-DSP SH7712 CPU.
358 config CPU_SUBTYPE_SH7720
359 bool "Support SH7720 processor"
362 select SYS_SUPPORTS_SH_CMT
363 select USB_OHCI_SH if USB_OHCI_HCD
366 Select SH7720 if you have a SH3-DSP SH7720 CPU.
368 config CPU_SUBTYPE_SH7721
369 bool "Support SH7721 processor"
372 select SYS_SUPPORTS_SH_CMT
373 select USB_OHCI_SH if USB_OHCI_HCD
375 Select SH7721 if you have a SH3-DSP SH7721 CPU.
377 # SH-4 Processor Support
379 config CPU_SUBTYPE_SH7750
380 bool "Support SH7750 processor"
383 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
385 config CPU_SUBTYPE_SH7091
386 bool "Support SH7091 processor"
389 Select SH7091 if you have an SH-4 based Sega device (such as
390 the Dreamcast, Naomi, and Naomi 2).
392 config CPU_SUBTYPE_SH7750R
393 bool "Support SH7750R processor"
396 config CPU_SUBTYPE_SH7750S
397 bool "Support SH7750S processor"
400 config CPU_SUBTYPE_SH7751
401 bool "Support SH7751 processor"
404 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
405 or if you have a HD6417751R CPU.
407 config CPU_SUBTYPE_SH7751R
408 bool "Support SH7751R processor"
411 config CPU_SUBTYPE_SH7760
412 bool "Support SH7760 processor"
415 config CPU_SUBTYPE_SH4_202
416 bool "Support SH4-202 processor"
419 # SH-4A Processor Support
421 config CPU_SUBTYPE_SH7723
422 bool "Support SH7723 processor"
426 select ARCH_SPARSEMEM_ENABLE
427 select SYS_SUPPORTS_SH_CMT
430 Select SH7723 if you have an SH-MobileR2 CPU.
432 config CPU_SUBTYPE_SH7724
433 bool "Support SH7724 processor"
437 select ARCH_SPARSEMEM_ENABLE
438 select SYS_SUPPORTS_SH_CMT
441 Select SH7724 if you have an SH-MobileR2R CPU.
443 config CPU_SUBTYPE_SH7734
444 bool "Support SH7734 processor"
449 Select SH7734 if you have a SH4A SH7734 CPU.
451 config CPU_SUBTYPE_SH7757
452 bool "Support SH7757 processor"
457 Select SH7757 if you have a SH4A SH7757 CPU.
459 config CPU_SUBTYPE_SH7763
460 bool "Support SH7763 processor"
462 select USB_OHCI_SH if USB_OHCI_HCD
464 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
466 config CPU_SUBTYPE_SH7770
467 bool "Support SH7770 processor"
470 config CPU_SUBTYPE_SH7780
471 bool "Support SH7780 processor"
474 config CPU_SUBTYPE_SH7785
475 bool "Support SH7785 processor"
478 select ARCH_SPARSEMEM_ENABLE
479 select SYS_SUPPORTS_NUMA
482 config CPU_SUBTYPE_SH7786
483 bool "Support SH7786 processor"
486 select CPU_HAS_PTEAEX
487 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
488 select USB_OHCI_SH if USB_OHCI_HCD
489 select USB_EHCI_SH if USB_EHCI_HCD
492 config CPU_SUBTYPE_SHX3
493 bool "Support SH-X3 processor"
496 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
500 # SH4AL-DSP Processor Support
502 config CPU_SUBTYPE_SH7343
503 bool "Support SH7343 processor"
506 select SYS_SUPPORTS_SH_CMT
508 config CPU_SUBTYPE_SH7722
509 bool "Support SH7722 processor"
513 select ARCH_SPARSEMEM_ENABLE
514 select SYS_SUPPORTS_NUMA
515 select SYS_SUPPORTS_SH_CMT
518 config CPU_SUBTYPE_SH7366
519 bool "Support SH7366 processor"
523 select ARCH_SPARSEMEM_ENABLE
524 select SYS_SUPPORTS_NUMA
525 select SYS_SUPPORTS_SH_CMT
534 prompt "Processor sub-type selection"
536 # SH-5 Processor Support
538 config CPU_SUBTYPE_SH5_101
539 bool "Support SH5-101 processor"
542 config CPU_SUBTYPE_SH5_103
543 bool "Support SH5-103 processor"
550 source "arch/sh/mm/Kconfig"
552 source "arch/sh/Kconfig.cpu"
554 source "arch/sh/boards/Kconfig"
556 menu "Timer and clock configuration"
559 int "Peripheral clock frequency (in Hz)"
560 depends on SH_CLK_CPG_LEGACY
561 default "31250000" if CPU_SUBTYPE_SH7619
562 default "33333333" if CPU_SUBTYPE_SH7770 || \
563 CPU_SUBTYPE_SH7760 || \
564 CPU_SUBTYPE_SH7705 || \
565 CPU_SUBTYPE_SH7203 || \
566 CPU_SUBTYPE_SH7206 || \
567 CPU_SUBTYPE_SH7263 || \
569 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
570 default "66000000" if CPU_SUBTYPE_SH4_202
573 This option is used to specify the peripheral clock frequency.
574 This is necessary for determining the reference clock value on
575 platforms lacking an RTC.
580 config SH_CLK_CPG_LEGACY
581 depends on SH_CLK_CPG
582 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
583 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
584 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
589 menu "CPU Frequency scaling"
590 source "drivers/cpufreq/Kconfig"
593 source "arch/sh/drivers/Kconfig"
597 menu "Kernel features"
599 source "kernel/Kconfig.hz"
602 bool "kexec system call (EXPERIMENTAL)"
603 depends on SUPERH32 && MMU
606 kexec is a system call that implements the ability to shutdown your
607 current kernel, and to start another kernel. It is like a reboot
608 but it is independent of the system firmware. And like a reboot
609 you can start any kernel with it, not just Linux.
611 The name comes from the similarity to the exec system call.
613 It is an ongoing process to be certain the hardware in a machine
614 is properly shutdown, so do not be surprised if this code does not
615 initially work for you. As of this writing the exact hardware
616 interface is strongly in flux, so no good recommendation can be
620 bool "kernel crash dumps (EXPERIMENTAL)"
621 depends on SUPERH32 && BROKEN_ON_SMP
623 Generate crash dump after being started by kexec.
624 This should be normally only set in special crash dump kernels
625 which are loaded in the main kernel with kexec-tools into
626 a specially reserved region and then later executed after
627 a crash by kdump/kexec. The crash dump kernel must be compiled
628 to a memory address not used by the main kernel using
631 For more details see Documentation/kdump/kdump.txt
634 bool "kexec jump (EXPERIMENTAL)"
635 depends on SUPERH32 && KEXEC && HIBERNATION
637 Jump between original kernel and kexeced kernel and invoke
640 config PHYSICAL_START
641 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
644 This gives the physical address where the kernel is loaded
645 and is ordinarily the same as MEMORY_START.
647 Different values are primarily used in the case of kexec on panic
648 where the fail safe kernel needs to run at a different address
649 than the panic-ed kernel.
652 bool "Enable seccomp to safely compute untrusted bytecode"
655 This kernel feature is useful for number crunching applications
656 that may need to compute untrusted bytecode during their
657 execution. By using pipes or other transports made available to
658 the process as file descriptors supporting the read/write
659 syscalls, it's possible to isolate those applications in
660 their own address space using seccomp. Once seccomp is
661 enabled via prctl, it cannot be disabled and the task is only
662 allowed to execute a few safe syscalls defined by each seccomp
668 bool "Symmetric multi-processing support"
669 depends on SYS_SUPPORTS_SMP
671 This enables support for systems with more than one CPU. If you have
672 a system with only one CPU, say N. If you have a system with more
675 If you say N here, the kernel will run on uni- and multiprocessor
676 machines, but will use only one CPU of a multiprocessor machine. If
677 you say Y here, the kernel will run on many, but not all,
678 uniprocessor machines. On a uniprocessor machine, the kernel
679 will run faster if you say N here.
681 People using multiprocessor machines who say Y here should also say
682 Y to "Enhanced Real Time Clock Support", below.
684 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
685 available at <http://www.tldp.org/docs.html#howto>.
687 If you don't know what to do here, say N.
690 int "Maximum number of CPUs (2-32)"
693 default "4" if CPU_SUBTYPE_SHX3
696 This allows you to specify the maximum number of CPUs which this
697 kernel will support. The maximum supported value is 32 and the
698 minimum value which makes sense is 2.
700 This is purely to save memory - each supported CPU adds
701 approximately eight kilobytes to the kernel image.
704 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
707 Say Y here to experiment with turning CPUs off and on. CPUs
708 can be controlled through /sys/devices/system/cpu.
712 depends on !SMP && SUPERH32
714 This enables support for gUSA (general UserSpace Atomicity).
715 This is the default implementation for both UP and non-ll/sc
716 CPUs, and is used by the libc, amongst others.
718 For additional information, design information can be found
719 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
721 This should only be disabled for special cases where alternate
722 atomicity implementations exist.
725 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
726 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
728 Enabling this option will allow the kernel to implement some
729 atomic operations using a software implementation of load-locked/
730 store-conditional (LLSC). On machines which do not have hardware
731 LLSC, this should be more efficient than the other alternative of
732 disabling interrupts around the atomic sequence.
734 config HW_PERF_EVENTS
735 bool "Enable hardware performance counter support for perf events"
736 depends on PERF_EVENTS && CPU_HAS_PMU
739 Enable hardware performance counter support for perf events. If
740 disabled, perf events will use software events only.
742 source "drivers/sh/Kconfig"
748 config USE_BUILTIN_DTB
749 bool "Use builtin DTB"
751 depends on SH_DEVICE_TREE
753 Link a device tree blob for particular hardware into the kernel,
754 suppressing use of the DTB pointer provided by the bootloader.
755 This option should only be used with legacy bootloaders that are
756 not capable of providing a DTB to the kernel, or for experimental
757 hardware without stable device tree bindings.
759 config BUILTIN_DTB_SOURCE
760 string "Source file for builtin DTB"
762 depends on USE_BUILTIN_DTB
764 Base name (without suffix, relative to arch/sh/boot/dts) for the
765 a DTS file that will be used to produce the DTB linked into the
768 config ZERO_PAGE_OFFSET
770 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
771 SH_7751_SOLUTION_ENGINE
772 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
773 default "0x00002000" if PAGE_SIZE_8KB
776 This sets the default offset of zero page.
778 config BOOT_LINK_OFFSET
780 default "0x00210000" if SH_SHMIN
781 default "0x00400000" if SH_CAYMAN
782 default "0x00810000" if SH_7780_SOLUTION_ENGINE
783 default "0x009e0000" if SH_TITAN
784 default "0x01800000" if SH_SDK7780
785 default "0x02000000" if SH_EDOSK7760
788 This option allows you to set the link address offset of the zImage.
789 This can be useful if you are on a board which has a small amount of
794 default "0x00001000" if PAGE_SIZE_4KB
795 default "0x00002000" if PAGE_SIZE_8KB
796 default "0x00004000" if PAGE_SIZE_16KB
797 default "0x00010000" if PAGE_SIZE_64KB
800 config ROMIMAGE_MMCIF
801 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
802 depends on CPU_SUBTYPE_SH7724
804 Say Y here to include experimental MMCIF loading code in
805 romImage. With this enabled it is possible to write the romImage
806 kernel image to an MMC card and boot the kernel straight from
807 the reset vector. At reset the processor Mask ROM will load the
808 first part of the romImage which in turn loads the rest the kernel
809 image to RAM using the MMCIF hardware block.
812 prompt "Kernel command line"
814 default CMDLINE_OVERWRITE
816 Setting this option allows the kernel command line arguments
819 config CMDLINE_OVERWRITE
820 bool "Overwrite bootloader kernel arguments"
822 Given string will overwrite any arguments passed in by
825 config CMDLINE_EXTEND
826 bool "Extend bootloader kernel arguments"
828 Given string will be concatenated with arguments passed in
834 string "Kernel command line arguments string"
835 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
836 default "console=ttySC1,115200"
843 tristate "SuperHyway Bus support"
844 depends on CPU_SUBTYPE_SH4_202
847 bool "Maple Bus support"
848 depends on SH_DREAMCAST
850 The Maple Bus is SEGA's serial communication bus for peripherals
851 on the Dreamcast. Without this bus support you won't be able to
852 get your Dreamcast keyboard etc to work, so most users
853 probably want to say 'Y' here, unless you are only using the
854 Dreamcast with a serial line terminal or a remote network
859 menu "Power management options (EXPERIMENTAL)"
861 source "kernel/power/Kconfig"
863 source "drivers/cpuidle/Kconfig"