1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_32BIT_OFF_T
5 select ARCH_HAVE_CUSTOM_GPIO_H
6 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
7 select ARCH_HAS_BINFMT_FLAT if !MMU
8 select ARCH_HAS_GIGANTIC_PAGE
9 select ARCH_HAS_GCOV_PROFILE_ALL
10 select ARCH_HAS_PTE_SPECIAL
11 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
12 select ARCH_HIBERNATION_POSSIBLE if MMU
13 select ARCH_MIGHT_HAVE_PC_PARPORT
14 select ARCH_WANT_IPC_PARSE_VERSION
16 select CPU_NO_EFFICIENT_FFS
17 select DMA_DECLARE_COHERENT
18 select GENERIC_ATOMIC64
19 select GENERIC_CLOCKEVENTS
20 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
21 select GENERIC_IDLE_POLL_SETUP
22 select GENERIC_IRQ_SHOW
23 select GENERIC_PCI_IOMAP if PCI
24 select GENERIC_SCHED_CLOCK
25 select GENERIC_STRNCPY_FROM_USER
26 select GENERIC_STRNLEN_USER
27 select GENERIC_SMP_IDLE_THREAD
28 select GUP_GET_PTE_LOW_HIGH if X2TLB
29 select HAVE_ARCH_AUDITSYSCALL
31 select HAVE_ARCH_TRACEHOOK
32 select HAVE_DEBUG_BUGVERBOSE
33 select HAVE_DEBUG_KMEMLEAK
34 select HAVE_DYNAMIC_FTRACE
35 select HAVE_FAST_GUP if MMU
36 select HAVE_FUNCTION_GRAPH_TRACER
37 select HAVE_FUNCTION_TRACER
38 select HAVE_FUTEX_CMPXCHG if FUTEX
39 select HAVE_FTRACE_MCOUNT_RECORD
40 select HAVE_HW_BREAKPOINT
41 select HAVE_IDE if HAS_IOPORT_MAP
42 select HAVE_IOREMAP_PROT if MMU && !X2TLB
43 select HAVE_KERNEL_BZIP2
44 select HAVE_KERNEL_GZIP
45 select HAVE_KERNEL_LZMA
46 select HAVE_KERNEL_LZO
49 select HAVE_KRETPROBES
50 select HAVE_MIXED_BREAKPOINTS_REGS
51 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
54 select HAVE_PATA_PLATFORM
55 select HAVE_PERF_EVENTS
56 select HAVE_REGS_AND_STACK_ACCESS_API
58 select HAVE_STACKPROTECTOR
59 select HAVE_SYSCALL_TRACEPOINTS
60 select IRQ_FORCED_THREADING
61 select MAY_HAVE_SPARSE_IRQ
62 select MODULES_USE_ELF_RELA
63 select NEED_SG_DMA_LENGTH
64 select NO_GENERIC_PCI_IOPORT_MAP if PCI
67 select PCI_DOMAINS if PCI
69 select PERF_USE_VMALLOC
73 The SuperH is a RISC processor targeted for use in embedded systems
74 and consumer electronics; it was also used in the Sega Dreamcast
75 gaming console. The SuperH port has a home page at
76 <http://www.linux-sh.org/>.
82 config GENERIC_HWEIGHT
85 config GENERIC_CALIBRATE_DELAY
88 config GENERIC_LOCKBREAK
90 depends on SMP && PREEMPTION
92 config ARCH_SUSPEND_POSSIBLE
95 config ARCH_HIBERNATION_POSSIBLE
98 config SYS_SUPPORTS_APM_EMULATION
100 select ARCH_SUSPEND_POSSIBLE
102 config SYS_SUPPORTS_HUGETLBFS
105 config SYS_SUPPORTS_SMP
108 config SYS_SUPPORTS_NUMA
111 config STACKTRACE_SUPPORT
114 config LOCKDEP_SUPPORT
117 config ARCH_HAS_ILOG2_U32
120 config ARCH_HAS_ILOG2_U64
125 depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
137 config DMA_NONCOHERENT
138 def_bool !DMA_COHERENT
139 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
141 config PGTABLE_LEVELS
157 select UNCACHED_MAPPING
163 select OF_EARLY_FLATTREE
167 select CPU_HAS_INTEVT
170 select SYS_SUPPORTS_SH_TMU
174 select CPU_HAS_INTEVT
176 select CPU_HAS_FPU if !CPU_SH4AL_DSP
178 select SYS_SUPPORTS_SH_TMU
179 select SYS_SUPPORTS_HUGETLBFS if MMU
196 select SYS_SUPPORTS_SMP
197 select SYS_SUPPORTS_NUMA
201 select ARCH_SUSPEND_POSSIBLE
205 depends on CPU_SH4 || CPU_SH4A
210 prompt "Processor sub-type selection"
216 # SH-2 Processor Support
218 config CPU_SUBTYPE_SH7619
219 bool "Support SH7619 processor"
221 select SYS_SUPPORTS_SH_CMT
223 config CPU_SUBTYPE_J2
224 bool "Support J2 processor"
226 select SYS_SUPPORTS_SMP
227 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
229 # SH-2A Processor Support
231 config CPU_SUBTYPE_SH7201
232 bool "Support SH7201 processor"
235 select SYS_SUPPORTS_SH_MTU2
237 config CPU_SUBTYPE_SH7203
238 bool "Support SH7203 processor"
241 select SYS_SUPPORTS_SH_CMT
242 select SYS_SUPPORTS_SH_MTU2
245 config CPU_SUBTYPE_SH7206
246 bool "Support SH7206 processor"
248 select SYS_SUPPORTS_SH_CMT
249 select SYS_SUPPORTS_SH_MTU2
251 config CPU_SUBTYPE_SH7263
252 bool "Support SH7263 processor"
255 select SYS_SUPPORTS_SH_CMT
256 select SYS_SUPPORTS_SH_MTU2
258 config CPU_SUBTYPE_SH7264
259 bool "Support SH7264 processor"
262 select SYS_SUPPORTS_SH_CMT
263 select SYS_SUPPORTS_SH_MTU2
266 config CPU_SUBTYPE_SH7269
267 bool "Support SH7269 processor"
270 select SYS_SUPPORTS_SH_CMT
271 select SYS_SUPPORTS_SH_MTU2
274 config CPU_SUBTYPE_MXG
275 bool "Support MX-G processor"
277 select SYS_SUPPORTS_SH_MTU2
279 Select MX-G if running on an R8A03022BG part.
281 # SH-3 Processor Support
283 config CPU_SUBTYPE_SH7705
284 bool "Support SH7705 processor"
287 config CPU_SUBTYPE_SH7706
288 bool "Support SH7706 processor"
291 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
293 config CPU_SUBTYPE_SH7707
294 bool "Support SH7707 processor"
297 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
299 config CPU_SUBTYPE_SH7708
300 bool "Support SH7708 processor"
303 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
304 if you have a 100 Mhz SH-3 HD6417708R CPU.
306 config CPU_SUBTYPE_SH7709
307 bool "Support SH7709 processor"
310 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
312 config CPU_SUBTYPE_SH7710
313 bool "Support SH7710 processor"
317 Select SH7710 if you have a SH3-DSP SH7710 CPU.
319 config CPU_SUBTYPE_SH7712
320 bool "Support SH7712 processor"
324 Select SH7712 if you have a SH3-DSP SH7712 CPU.
326 config CPU_SUBTYPE_SH7720
327 bool "Support SH7720 processor"
330 select SYS_SUPPORTS_SH_CMT
331 select USB_OHCI_SH if USB_OHCI_HCD
334 Select SH7720 if you have a SH3-DSP SH7720 CPU.
336 config CPU_SUBTYPE_SH7721
337 bool "Support SH7721 processor"
340 select SYS_SUPPORTS_SH_CMT
341 select USB_OHCI_SH if USB_OHCI_HCD
343 Select SH7721 if you have a SH3-DSP SH7721 CPU.
345 # SH-4 Processor Support
347 config CPU_SUBTYPE_SH7750
348 bool "Support SH7750 processor"
351 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
353 config CPU_SUBTYPE_SH7091
354 bool "Support SH7091 processor"
357 Select SH7091 if you have an SH-4 based Sega device (such as
358 the Dreamcast, Naomi, and Naomi 2).
360 config CPU_SUBTYPE_SH7750R
361 bool "Support SH7750R processor"
364 config CPU_SUBTYPE_SH7750S
365 bool "Support SH7750S processor"
368 config CPU_SUBTYPE_SH7751
369 bool "Support SH7751 processor"
372 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
373 or if you have a HD6417751R CPU.
375 config CPU_SUBTYPE_SH7751R
376 bool "Support SH7751R processor"
379 config CPU_SUBTYPE_SH7760
380 bool "Support SH7760 processor"
383 config CPU_SUBTYPE_SH4_202
384 bool "Support SH4-202 processor"
387 # SH-4A Processor Support
389 config CPU_SUBTYPE_SH7723
390 bool "Support SH7723 processor"
394 select ARCH_SPARSEMEM_ENABLE
395 select SYS_SUPPORTS_SH_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_SH_CMT
409 Select SH7724 if you have an SH-MobileR2R CPU.
411 config CPU_SUBTYPE_SH7734
412 bool "Support SH7734 processor"
417 Select SH7734 if you have a SH4A SH7734 CPU.
419 config CPU_SUBTYPE_SH7757
420 bool "Support SH7757 processor"
425 Select SH7757 if you have a SH4A SH7757 CPU.
427 config CPU_SUBTYPE_SH7763
428 bool "Support SH7763 processor"
430 select USB_OHCI_SH if USB_OHCI_HCD
432 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
434 config CPU_SUBTYPE_SH7770
435 bool "Support SH7770 processor"
438 config CPU_SUBTYPE_SH7780
439 bool "Support SH7780 processor"
442 config CPU_SUBTYPE_SH7785
443 bool "Support SH7785 processor"
446 select ARCH_SPARSEMEM_ENABLE
447 select SYS_SUPPORTS_NUMA
450 config CPU_SUBTYPE_SH7786
451 bool "Support SH7786 processor"
454 select CPU_HAS_PTEAEX
455 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
456 select USB_OHCI_SH if USB_OHCI_HCD
457 select USB_EHCI_SH if USB_EHCI_HCD
460 config CPU_SUBTYPE_SHX3
461 bool "Support SH-X3 processor"
464 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
468 # SH4AL-DSP Processor Support
470 config CPU_SUBTYPE_SH7343
471 bool "Support SH7343 processor"
474 select SYS_SUPPORTS_SH_CMT
476 config CPU_SUBTYPE_SH7722
477 bool "Support SH7722 processor"
481 select ARCH_SPARSEMEM_ENABLE
482 select SYS_SUPPORTS_NUMA
483 select SYS_SUPPORTS_SH_CMT
486 config CPU_SUBTYPE_SH7366
487 bool "Support SH7366 processor"
491 select ARCH_SPARSEMEM_ENABLE
492 select SYS_SUPPORTS_NUMA
493 select SYS_SUPPORTS_SH_CMT
497 source "arch/sh/mm/Kconfig"
499 source "arch/sh/Kconfig.cpu"
501 source "arch/sh/boards/Kconfig"
503 menu "Timer and clock configuration"
506 int "Peripheral clock frequency (in Hz)"
507 depends on SH_CLK_CPG_LEGACY
508 default "31250000" if CPU_SUBTYPE_SH7619
509 default "33333333" if CPU_SUBTYPE_SH7770 || \
510 CPU_SUBTYPE_SH7760 || \
511 CPU_SUBTYPE_SH7705 || \
512 CPU_SUBTYPE_SH7203 || \
513 CPU_SUBTYPE_SH7206 || \
514 CPU_SUBTYPE_SH7263 || \
516 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
517 default "66000000" if CPU_SUBTYPE_SH4_202
520 This option is used to specify the peripheral clock frequency.
521 This is necessary for determining the reference clock value on
522 platforms lacking an RTC.
527 config SH_CLK_CPG_LEGACY
528 depends on SH_CLK_CPG
529 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
530 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
531 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
536 menu "CPU Frequency scaling"
537 source "drivers/cpufreq/Kconfig"
540 source "arch/sh/drivers/Kconfig"
544 menu "Kernel features"
546 source "kernel/Kconfig.hz"
549 bool "kexec system call (EXPERIMENTAL)"
553 kexec is a system call that implements the ability to shutdown your
554 current kernel, and to start another kernel. It is like a reboot
555 but it is independent of the system firmware. And like a reboot
556 you can start any kernel with it, not just Linux.
558 The name comes from the similarity to the exec system call.
560 It is an ongoing process to be certain the hardware in a machine
561 is properly shutdown, so do not be surprised if this code does not
562 initially work for you. As of this writing the exact hardware
563 interface is strongly in flux, so no good recommendation can be
567 bool "kernel crash dumps (EXPERIMENTAL)"
568 depends on BROKEN_ON_SMP
570 Generate crash dump after being started by kexec.
571 This should be normally only set in special crash dump kernels
572 which are loaded in the main kernel with kexec-tools into
573 a specially reserved region and then later executed after
574 a crash by kdump/kexec. The crash dump kernel must be compiled
575 to a memory address not used by the main kernel using
578 For more details see Documentation/admin-guide/kdump/kdump.rst
581 bool "kexec jump (EXPERIMENTAL)"
582 depends on KEXEC && HIBERNATION
584 Jump between original kernel and kexeced kernel and invoke
587 config PHYSICAL_START
588 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
591 This gives the physical address where the kernel is loaded
592 and is ordinarily the same as MEMORY_START.
594 Different values are primarily used in the case of kexec on panic
595 where the fail safe kernel needs to run at a different address
596 than the panic-ed kernel.
599 bool "Enable seccomp to safely compute untrusted bytecode"
602 This kernel feature is useful for number crunching applications
603 that may need to compute untrusted bytecode during their
604 execution. By using pipes or other transports made available to
605 the process as file descriptors supporting the read/write
606 syscalls, it's possible to isolate those applications in
607 their own address space using seccomp. Once seccomp is
608 enabled via prctl, it cannot be disabled and the task is only
609 allowed to execute a few safe syscalls defined by each seccomp
615 bool "Symmetric multi-processing support"
616 depends on SYS_SUPPORTS_SMP
618 This enables support for systems with more than one CPU. If you have
619 a system with only one CPU, say N. If you have a system with more
622 If you say N here, the kernel will run on uni- 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 uniprocessor machines. On a uniprocessor 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/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
632 available at <https://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_SUBTYPE_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.
651 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
654 Say Y here to experiment with turning CPUs off and on. CPUs
655 can be controlled through /sys/devices/system/cpu.
661 This enables support for gUSA (general UserSpace Atomicity).
662 This is the default implementation for both UP and non-ll/sc
663 CPUs, and is used by the libc, amongst others.
665 For additional information, design information can be found
666 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
668 This should only be disabled for special cases where alternate
669 atomicity implementations exist.
672 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
673 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
675 Enabling this option will allow the kernel to implement some
676 atomic operations using a software implementation of load-locked/
677 store-conditional (LLSC). On machines which do not have hardware
678 LLSC, this should be more efficient than the other alternative of
679 disabling interrupts around the atomic sequence.
681 config HW_PERF_EVENTS
682 bool "Enable hardware performance counter support for perf events"
683 depends on PERF_EVENTS && CPU_HAS_PMU
686 Enable hardware performance counter support for perf events. If
687 disabled, perf events will use software events only.
689 source "drivers/sh/Kconfig"
695 config USE_BUILTIN_DTB
696 bool "Use builtin DTB"
698 depends on SH_DEVICE_TREE
700 Link a device tree blob for particular hardware into the kernel,
701 suppressing use of the DTB pointer provided by the bootloader.
702 This option should only be used with legacy bootloaders that are
703 not capable of providing a DTB to the kernel, or for experimental
704 hardware without stable device tree bindings.
706 config BUILTIN_DTB_SOURCE
707 string "Source file for builtin DTB"
709 depends on USE_BUILTIN_DTB
711 Base name (without suffix, relative to arch/sh/boot/dts) for the
712 a DTS file that will be used to produce the DTB linked into the
715 config ZERO_PAGE_OFFSET
717 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
718 SH_7751_SOLUTION_ENGINE
719 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
720 default "0x00002000" if PAGE_SIZE_8KB
723 This sets the default offset of zero page.
725 config BOOT_LINK_OFFSET
727 default "0x00210000" if SH_SHMIN
728 default "0x00810000" if SH_7780_SOLUTION_ENGINE
729 default "0x009e0000" if SH_TITAN
730 default "0x01800000" if SH_SDK7780
731 default "0x02000000" if SH_EDOSK7760
734 This option allows you to set the link address offset of the zImage.
735 This can be useful if you are on a board which has a small amount of
740 default "0x00001000" if PAGE_SIZE_4KB
741 default "0x00002000" if PAGE_SIZE_8KB
742 default "0x00004000" if PAGE_SIZE_16KB
743 default "0x00010000" if PAGE_SIZE_64KB
746 config ROMIMAGE_MMCIF
747 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
748 depends on CPU_SUBTYPE_SH7724
750 Say Y here to include experimental MMCIF loading code in
751 romImage. With this enabled it is possible to write the romImage
752 kernel image to an MMC card and boot the kernel straight from
753 the reset vector. At reset the processor Mask ROM will load the
754 first part of the romImage which in turn loads the rest the kernel
755 image to RAM using the MMCIF hardware block.
758 prompt "Kernel command line"
760 default CMDLINE_OVERWRITE
762 Setting this option allows the kernel command line arguments
765 config CMDLINE_OVERWRITE
766 bool "Overwrite bootloader kernel arguments"
768 Given string will overwrite any arguments passed in by
771 config CMDLINE_EXTEND
772 bool "Extend bootloader kernel arguments"
774 Given string will be concatenated with arguments passed in
780 string "Kernel command line arguments string"
781 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
782 default "console=ttySC1,115200"
789 tristate "SuperHyway Bus support"
790 depends on CPU_SUBTYPE_SH4_202
793 bool "Maple Bus support"
794 depends on SH_DREAMCAST
796 The Maple Bus is SEGA's serial communication bus for peripherals
797 on the Dreamcast. Without this bus support you won't be able to
798 get your Dreamcast keyboard etc to work, so most users
799 probably want to say 'Y' here, unless you are only using the
800 Dreamcast with a serial line terminal or a remote network
805 menu "Power management options (EXPERIMENTAL)"
807 source "kernel/power/Kconfig"
809 source "drivers/cpuidle/Kconfig"