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
11 select HAVE_IDE if HAS_IOPORT_MAP
12 select HAVE_MEMBLOCK_NODE_MAP
13 select ARCH_DISCARD_MEMBLOCK
15 select HAVE_GENERIC_DMA_COHERENT
16 select HAVE_ARCH_TRACEHOOK
17 select HAVE_PERF_EVENTS
18 select HAVE_DEBUG_BUGVERBOSE
19 select ARCH_HAVE_CUSTOM_GPIO_H
20 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
21 select ARCH_HAS_GCOV_PROFILE_ALL
22 select PERF_USE_VMALLOC
23 select HAVE_DEBUG_KMEMLEAK
24 select HAVE_KERNEL_GZIP
25 select CPU_NO_EFFICIENT_FFS
26 select HAVE_KERNEL_BZIP2
27 select HAVE_KERNEL_LZMA
29 select HAVE_KERNEL_LZO
31 select ARCH_WANT_IPC_PARSE_VERSION
32 select HAVE_SYSCALL_TRACEPOINTS
33 select HAVE_REGS_AND_STACK_ACCESS_API
34 select MAY_HAVE_SPARSE_IRQ
35 select IRQ_FORCED_THREADING
37 select GENERIC_ATOMIC64
38 select GENERIC_IRQ_SHOW
39 select GENERIC_SMP_IDLE_THREAD
40 select GENERIC_IDLE_POLL_SETUP
41 select GENERIC_CLOCKEVENTS
42 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
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
50 select HAVE_ARCH_AUDITSYSCALL
51 select HAVE_FUTEX_CMPXCHG if FUTEX
53 select NEED_SG_DMA_LENGTH
56 The SuperH is a RISC processor targeted for use in embedded systems
57 and consumer electronics; it was also used in the Sega Dreamcast
58 gaming console. The SuperH port has a home page at
59 <http://www.linux-sh.org/>.
62 def_bool "$(ARCH)" = "sh"
64 select HAVE_KRETPROBES
65 select HAVE_IOREMAP_PROT if MMU && !X2TLB
66 select HAVE_FUNCTION_TRACER
67 select HAVE_FTRACE_MCOUNT_RECORD
68 select HAVE_DYNAMIC_FTRACE
69 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
70 select ARCH_WANT_IPC_PARSE_VERSION
71 select HAVE_FUNCTION_GRAPH_TRACER
73 select HAVE_HW_BREAKPOINT
74 select HAVE_MIXED_BREAKPOINTS_REGS
76 select ARCH_HIBERNATION_POSSIBLE if MMU
78 select HAVE_STACKPROTECTOR
81 def_bool "$(ARCH)" = "sh64"
82 select HAVE_EXIT_THREAD
87 default "arch/sh/configs/shx3_defconfig" if SUPERH32
88 default "arch/sh/configs/cayman_defconfig" if SUPERH64
90 config RWSEM_GENERIC_SPINLOCK
93 config RWSEM_XCHGADD_ALGORITHM
98 depends on BUG && SUPERH32
104 config GENERIC_HWEIGHT
107 config GENERIC_CALIBRATE_DELAY
110 config GENERIC_LOCKBREAK
112 depends on SMP && PREEMPT
114 config ARCH_SUSPEND_POSSIBLE
117 config ARCH_HIBERNATION_POSSIBLE
120 config SYS_SUPPORTS_APM_EMULATION
122 select ARCH_SUSPEND_POSSIBLE
124 config SYS_SUPPORTS_HUGETLBFS
127 config SYS_SUPPORTS_SMP
130 config SYS_SUPPORTS_NUMA
133 config SYS_SUPPORTS_PCI
136 config STACKTRACE_SUPPORT
139 config LOCKDEP_SUPPORT
142 config ARCH_HAS_ILOG2_U32
145 config ARCH_HAS_ILOG2_U64
150 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
151 !SH_HP6XX && !SH_SOLUTION_ENGINE
162 config DMA_NONCOHERENT
163 def_bool !DMA_COHERENT
164 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
166 config PGTABLE_LEVELS
182 select UNCACHED_MAPPING
188 select OF_EARLY_FLATTREE
192 select CPU_HAS_INTEVT
195 select SYS_SUPPORTS_SH_TMU
199 select CPU_HAS_INTEVT
201 select CPU_HAS_FPU if !CPU_SH4AL_DSP
203 select SYS_SUPPORTS_SH_TMU
204 select SYS_SUPPORTS_HUGETLBFS if MMU
218 select SYS_SUPPORTS_SH_TMU
219 select SYS_SUPPORTS_HUGETLBFS if MMU
227 select SYS_SUPPORTS_SMP
228 select SYS_SUPPORTS_NUMA
232 select ARCH_SUSPEND_POSSIBLE
236 depends on CPU_SH4 || CPU_SH4A
243 prompt "Processor sub-type selection"
249 # SH-2 Processor Support
251 config CPU_SUBTYPE_SH7619
252 bool "Support SH7619 processor"
254 select SYS_SUPPORTS_SH_CMT
256 config CPU_SUBTYPE_J2
257 bool "Support J2 processor"
259 select SYS_SUPPORTS_SMP
260 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
262 # SH-2A Processor Support
264 config CPU_SUBTYPE_SH7201
265 bool "Support SH7201 processor"
268 select SYS_SUPPORTS_SH_MTU2
270 config CPU_SUBTYPE_SH7203
271 bool "Support SH7203 processor"
274 select SYS_SUPPORTS_SH_CMT
275 select SYS_SUPPORTS_SH_MTU2
278 config CPU_SUBTYPE_SH7206
279 bool "Support SH7206 processor"
281 select SYS_SUPPORTS_SH_CMT
282 select SYS_SUPPORTS_SH_MTU2
284 config CPU_SUBTYPE_SH7263
285 bool "Support SH7263 processor"
288 select SYS_SUPPORTS_SH_CMT
289 select SYS_SUPPORTS_SH_MTU2
291 config CPU_SUBTYPE_SH7264
292 bool "Support SH7264 processor"
295 select SYS_SUPPORTS_SH_CMT
296 select SYS_SUPPORTS_SH_MTU2
299 config CPU_SUBTYPE_SH7269
300 bool "Support SH7269 processor"
303 select SYS_SUPPORTS_SH_CMT
304 select SYS_SUPPORTS_SH_MTU2
307 config CPU_SUBTYPE_MXG
308 bool "Support MX-G processor"
310 select SYS_SUPPORTS_SH_MTU2
312 Select MX-G if running on an R8A03022BG part.
314 # SH-3 Processor Support
316 config CPU_SUBTYPE_SH7705
317 bool "Support SH7705 processor"
320 config CPU_SUBTYPE_SH7706
321 bool "Support SH7706 processor"
324 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
326 config CPU_SUBTYPE_SH7707
327 bool "Support SH7707 processor"
330 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
332 config CPU_SUBTYPE_SH7708
333 bool "Support SH7708 processor"
336 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
337 if you have a 100 Mhz SH-3 HD6417708R CPU.
339 config CPU_SUBTYPE_SH7709
340 bool "Support SH7709 processor"
343 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
345 config CPU_SUBTYPE_SH7710
346 bool "Support SH7710 processor"
350 Select SH7710 if you have a SH3-DSP SH7710 CPU.
352 config CPU_SUBTYPE_SH7712
353 bool "Support SH7712 processor"
357 Select SH7712 if you have a SH3-DSP SH7712 CPU.
359 config CPU_SUBTYPE_SH7720
360 bool "Support SH7720 processor"
363 select SYS_SUPPORTS_SH_CMT
364 select USB_OHCI_SH if USB_OHCI_HCD
367 Select SH7720 if you have a SH3-DSP SH7720 CPU.
369 config CPU_SUBTYPE_SH7721
370 bool "Support SH7721 processor"
373 select SYS_SUPPORTS_SH_CMT
374 select USB_OHCI_SH if USB_OHCI_HCD
376 Select SH7721 if you have a SH3-DSP SH7721 CPU.
378 # SH-4 Processor Support
380 config CPU_SUBTYPE_SH7750
381 bool "Support SH7750 processor"
384 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
386 config CPU_SUBTYPE_SH7091
387 bool "Support SH7091 processor"
390 Select SH7091 if you have an SH-4 based Sega device (such as
391 the Dreamcast, Naomi, and Naomi 2).
393 config CPU_SUBTYPE_SH7750R
394 bool "Support SH7750R processor"
397 config CPU_SUBTYPE_SH7750S
398 bool "Support SH7750S processor"
401 config CPU_SUBTYPE_SH7751
402 bool "Support SH7751 processor"
405 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
406 or if you have a HD6417751R CPU.
408 config CPU_SUBTYPE_SH7751R
409 bool "Support SH7751R processor"
412 config CPU_SUBTYPE_SH7760
413 bool "Support SH7760 processor"
416 config CPU_SUBTYPE_SH4_202
417 bool "Support SH4-202 processor"
420 # SH-4A Processor Support
422 config CPU_SUBTYPE_SH7723
423 bool "Support SH7723 processor"
427 select ARCH_SPARSEMEM_ENABLE
428 select SYS_SUPPORTS_SH_CMT
431 Select SH7723 if you have an SH-MobileR2 CPU.
433 config CPU_SUBTYPE_SH7724
434 bool "Support SH7724 processor"
438 select ARCH_SPARSEMEM_ENABLE
439 select SYS_SUPPORTS_SH_CMT
442 Select SH7724 if you have an SH-MobileR2R CPU.
444 config CPU_SUBTYPE_SH7734
445 bool "Support SH7734 processor"
450 Select SH7734 if you have a SH4A SH7734 CPU.
452 config CPU_SUBTYPE_SH7757
453 bool "Support SH7757 processor"
458 Select SH7757 if you have a SH4A SH7757 CPU.
460 config CPU_SUBTYPE_SH7763
461 bool "Support SH7763 processor"
463 select USB_OHCI_SH if USB_OHCI_HCD
465 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
467 config CPU_SUBTYPE_SH7770
468 bool "Support SH7770 processor"
471 config CPU_SUBTYPE_SH7780
472 bool "Support SH7780 processor"
475 config CPU_SUBTYPE_SH7785
476 bool "Support SH7785 processor"
479 select ARCH_SPARSEMEM_ENABLE
480 select SYS_SUPPORTS_NUMA
483 config CPU_SUBTYPE_SH7786
484 bool "Support SH7786 processor"
487 select CPU_HAS_PTEAEX
488 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
489 select USB_OHCI_SH if USB_OHCI_HCD
490 select USB_EHCI_SH if USB_EHCI_HCD
493 config CPU_SUBTYPE_SHX3
494 bool "Support SH-X3 processor"
497 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
501 # SH4AL-DSP Processor Support
503 config CPU_SUBTYPE_SH7343
504 bool "Support SH7343 processor"
507 select SYS_SUPPORTS_SH_CMT
509 config CPU_SUBTYPE_SH7722
510 bool "Support SH7722 processor"
514 select ARCH_SPARSEMEM_ENABLE
515 select SYS_SUPPORTS_NUMA
516 select SYS_SUPPORTS_SH_CMT
519 config CPU_SUBTYPE_SH7366
520 bool "Support SH7366 processor"
524 select ARCH_SPARSEMEM_ENABLE
525 select SYS_SUPPORTS_NUMA
526 select SYS_SUPPORTS_SH_CMT
535 prompt "Processor sub-type selection"
537 # SH-5 Processor Support
539 config CPU_SUBTYPE_SH5_101
540 bool "Support SH5-101 processor"
543 config CPU_SUBTYPE_SH5_103
544 bool "Support SH5-103 processor"
551 source "arch/sh/mm/Kconfig"
553 source "arch/sh/Kconfig.cpu"
555 source "arch/sh/boards/Kconfig"
557 menu "Timer and clock configuration"
560 int "Peripheral clock frequency (in Hz)"
561 depends on SH_CLK_CPG_LEGACY
562 default "31250000" if CPU_SUBTYPE_SH7619
563 default "33333333" if CPU_SUBTYPE_SH7770 || \
564 CPU_SUBTYPE_SH7760 || \
565 CPU_SUBTYPE_SH7705 || \
566 CPU_SUBTYPE_SH7203 || \
567 CPU_SUBTYPE_SH7206 || \
568 CPU_SUBTYPE_SH7263 || \
570 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
571 default "66000000" if CPU_SUBTYPE_SH4_202
574 This option is used to specify the peripheral clock frequency.
575 This is necessary for determining the reference clock value on
576 platforms lacking an RTC.
581 config SH_CLK_CPG_LEGACY
582 depends on SH_CLK_CPG
583 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
584 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
585 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
590 menu "CPU Frequency scaling"
591 source "drivers/cpufreq/Kconfig"
594 source "arch/sh/drivers/Kconfig"
598 menu "Kernel features"
600 source kernel/Kconfig.hz
603 bool "kexec system call (EXPERIMENTAL)"
604 depends on SUPERH32 && 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. As of this writing the exact hardware
617 interface is strongly in flux, so no good recommendation can be
621 bool "kernel crash dumps (EXPERIMENTAL)"
622 depends on SUPERH32 && BROKEN_ON_SMP
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
638 Jump between original kernel and kexeced kernel and invoke
641 config PHYSICAL_START
642 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
645 This gives the physical address where the kernel is loaded
646 and is ordinarily the same as MEMORY_START.
648 Different values are primarily used in the case of kexec on panic
649 where the fail safe kernel needs to run at a different address
650 than the panic-ed kernel.
653 bool "Enable seccomp to safely compute untrusted bytecode"
656 This kernel feature is useful for number crunching applications
657 that may need to compute untrusted bytecode during their
658 execution. By using pipes or other transports made available to
659 the process as file descriptors supporting the read/write
660 syscalls, it's possible to isolate those applications in
661 their own address space using seccomp. Once seccomp is
662 enabled via prctl, it cannot be disabled and the task is only
663 allowed to execute a few safe syscalls defined by each seccomp
669 bool "Symmetric multi-processing support"
670 depends on SYS_SUPPORTS_SMP
672 This enables support for systems with more than one CPU. If you have
673 a system with only one CPU, say N. If you have a system with more
676 If you say N here, the kernel will run on uni- and multiprocessor
677 machines, but will use only one CPU of a multiprocessor machine. If
678 you say Y here, the kernel will run on many, but not all,
679 uniprocessor machines. On a uniprocessor machine, the kernel
680 will run faster if you say N here.
682 People using multiprocessor machines who say Y here should also say
683 Y to "Enhanced Real Time Clock Support", below.
685 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
686 available at <http://www.tldp.org/docs.html#howto>.
688 If you don't know what to do here, say N.
691 int "Maximum number of CPUs (2-32)"
694 default "4" if CPU_SUBTYPE_SHX3
697 This allows you to specify the maximum number of CPUs which this
698 kernel will support. The maximum supported value is 32 and the
699 minimum value which makes sense is 2.
701 This is purely to save memory - each supported CPU adds
702 approximately eight kilobytes to the kernel image.
705 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
708 Say Y here to experiment with turning CPUs off and on. CPUs
709 can be controlled through /sys/devices/system/cpu.
713 depends on !SMP && SUPERH32
715 This enables support for gUSA (general UserSpace Atomicity).
716 This is the default implementation for both UP and non-ll/sc
717 CPUs, and is used by the libc, amongst others.
719 For additional information, design information can be found
720 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
722 This should only be disabled for special cases where alternate
723 atomicity implementations exist.
726 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
727 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
729 Enabling this option will allow the kernel to implement some
730 atomic operations using a software implementation of load-locked/
731 store-conditional (LLSC). On machines which do not have hardware
732 LLSC, this should be more efficient than the other alternative of
733 disabling interrupts around the atomic sequence.
735 config HW_PERF_EVENTS
736 bool "Enable hardware performance counter support for perf events"
737 depends on PERF_EVENTS && CPU_HAS_PMU
740 Enable hardware performance counter support for perf events. If
741 disabled, perf events will use software events only.
743 source "drivers/sh/Kconfig"
749 config USE_BUILTIN_DTB
750 bool "Use builtin DTB"
752 depends on SH_DEVICE_TREE
754 Link a device tree blob for particular hardware into the kernel,
755 suppressing use of the DTB pointer provided by the bootloader.
756 This option should only be used with legacy bootloaders that are
757 not capable of providing a DTB to the kernel, or for experimental
758 hardware without stable device tree bindings.
760 config BUILTIN_DTB_SOURCE
761 string "Source file for builtin DTB"
763 depends on USE_BUILTIN_DTB
765 Base name (without suffix, relative to arch/sh/boot/dts) for the
766 a DTS file that will be used to produce the DTB linked into the
769 config ZERO_PAGE_OFFSET
771 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
772 SH_7751_SOLUTION_ENGINE
773 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
774 default "0x00002000" if PAGE_SIZE_8KB
777 This sets the default offset of zero page.
779 config BOOT_LINK_OFFSET
781 default "0x00210000" if SH_SHMIN
782 default "0x00400000" if SH_CAYMAN
783 default "0x00810000" if SH_7780_SOLUTION_ENGINE
784 default "0x009e0000" if SH_TITAN
785 default "0x01800000" if SH_SDK7780
786 default "0x02000000" if SH_EDOSK7760
789 This option allows you to set the link address offset of the zImage.
790 This can be useful if you are on a board which has a small amount of
795 default "0x00001000" if PAGE_SIZE_4KB
796 default "0x00002000" if PAGE_SIZE_8KB
797 default "0x00004000" if PAGE_SIZE_16KB
798 default "0x00010000" if PAGE_SIZE_64KB
801 config ROMIMAGE_MMCIF
802 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
803 depends on CPU_SUBTYPE_SH7724
805 Say Y here to include experimental MMCIF loading code in
806 romImage. With this enabled it is possible to write the romImage
807 kernel image to an MMC card and boot the kernel straight from
808 the reset vector. At reset the processor Mask ROM will load the
809 first part of the romImage which in turn loads the rest the kernel
810 image to RAM using the MMCIF hardware block.
813 prompt "Kernel command line"
815 default CMDLINE_OVERWRITE
817 Setting this option allows the kernel command line arguments
820 config CMDLINE_OVERWRITE
821 bool "Overwrite bootloader kernel arguments"
823 Given string will overwrite any arguments passed in by
826 config CMDLINE_EXTEND
827 bool "Extend bootloader kernel arguments"
829 Given string will be concatenated with arguments passed in
835 string "Kernel command line arguments string"
836 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
837 default "console=ttySC1,115200"
844 tristate "SuperHyway Bus support"
845 depends on CPU_SUBTYPE_SH4_202
848 bool "Maple Bus support"
849 depends on SH_DREAMCAST
851 The Maple Bus is SEGA's serial communication bus for peripherals
852 on the Dreamcast. Without this bus support you won't be able to
853 get your Dreamcast keyboard etc to work, so most users
854 probably want to say 'Y' here, unless you are only using the
855 Dreamcast with a serial line terminal or a remote network
860 depends on SYS_SUPPORTS_PCI
862 select GENERIC_PCI_IOMAP
863 select NO_GENERIC_PCI_IOPORT_MAP
865 Find out whether you have a PCI motherboard. PCI is the name of a
866 bus system, i.e. the way the CPU talks to the other stuff inside
867 your box. If you have PCI, say Y, otherwise N.
872 source "drivers/pci/Kconfig"
874 source "drivers/pcmcia/Kconfig"
878 menu "Power management options (EXPERIMENTAL)"
880 source "kernel/power/Kconfig"
882 source "drivers/cpuidle/Kconfig"