1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_HAS_BINFMT_FLAT if !MMU
5 select ARCH_HAS_PTE_SPECIAL
6 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
7 select ARCH_MIGHT_HAVE_PC_PARPORT
8 select HAVE_PATA_PLATFORM
10 select DMA_DECLARE_COHERENT
11 select HAVE_IDE if HAS_IOPORT_MAP
13 select HAVE_ARCH_TRACEHOOK
14 select HAVE_PERF_EVENTS
15 select HAVE_DEBUG_BUGVERBOSE
16 select HAVE_FAST_GUP if MMU
17 select ARCH_HAVE_CUSTOM_GPIO_H
18 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
19 select ARCH_HAS_GCOV_PROFILE_ALL
20 select PERF_USE_VMALLOC
21 select HAVE_DEBUG_KMEMLEAK
22 select HAVE_KERNEL_GZIP
23 select CPU_NO_EFFICIENT_FFS
24 select HAVE_KERNEL_BZIP2
25 select HAVE_KERNEL_LZMA
27 select HAVE_KERNEL_LZO
29 select ARCH_WANT_IPC_PARSE_VERSION
30 select HAVE_SYSCALL_TRACEPOINTS
31 select HAVE_REGS_AND_STACK_ACCESS_API
32 select MAY_HAVE_SPARSE_IRQ
33 select IRQ_FORCED_THREADING
35 select GENERIC_ATOMIC64
36 select GENERIC_IRQ_SHOW
37 select GENERIC_SMP_IDLE_THREAD
38 select GENERIC_IDLE_POLL_SETUP
39 select GENERIC_CLOCKEVENTS
40 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
41 select GENERIC_PCI_IOMAP if PCI
42 select GENERIC_SCHED_CLOCK
43 select GENERIC_STRNCPY_FROM_USER
44 select GENERIC_STRNLEN_USER
45 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
46 select MODULES_USE_ELF_RELA
47 select NO_GENERIC_PCI_IOPORT_MAP if PCI
50 select PCI_DOMAINS if PCI
51 select HAVE_ARCH_AUDITSYSCALL
52 select HAVE_FUTEX_CMPXCHG if FUTEX
54 select NEED_SG_DMA_LENGTH
55 select ARCH_HAS_GIGANTIC_PAGE
56 select ARCH_32BIT_OFF_T
57 select GUP_GET_PTE_LOW_HIGH if X2TLB
59 select HAVE_KRETPROBES
60 select HAVE_IOREMAP_PROT if MMU && !X2TLB
61 select HAVE_FUNCTION_TRACER
62 select HAVE_FTRACE_MCOUNT_RECORD
63 select HAVE_DYNAMIC_FTRACE
64 select ARCH_WANT_IPC_PARSE_VERSION
65 select HAVE_FUNCTION_GRAPH_TRACER
67 select HAVE_HW_BREAKPOINT
68 select HAVE_MIXED_BREAKPOINTS_REGS
70 select ARCH_HIBERNATION_POSSIBLE if MMU
72 select HAVE_STACKPROTECTOR
74 The SuperH is a RISC processor targeted for use in embedded systems
75 and consumer electronics; it was also used in the Sega Dreamcast
76 gaming console. The SuperH port has a home page at
77 <http://www.linux-sh.org/>.
83 config GENERIC_HWEIGHT
86 config GENERIC_CALIBRATE_DELAY
89 config GENERIC_LOCKBREAK
91 depends on SMP && PREEMPTION
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_HUGETLBFS
106 config SYS_SUPPORTS_SMP
109 config SYS_SUPPORTS_NUMA
112 config STACKTRACE_SUPPORT
115 config LOCKDEP_SUPPORT
118 config ARCH_HAS_ILOG2_U32
121 config ARCH_HAS_ILOG2_U64
126 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
127 !SH_HP6XX && !SH_SOLUTION_ENGINE
138 config DMA_NONCOHERENT
139 def_bool !DMA_COHERENT
140 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
142 config PGTABLE_LEVELS
158 select UNCACHED_MAPPING
164 select OF_EARLY_FLATTREE
168 select CPU_HAS_INTEVT
171 select SYS_SUPPORTS_SH_TMU
175 select CPU_HAS_INTEVT
177 select CPU_HAS_FPU if !CPU_SH4AL_DSP
179 select SYS_SUPPORTS_SH_TMU
180 select SYS_SUPPORTS_HUGETLBFS if MMU
197 select SYS_SUPPORTS_SMP
198 select SYS_SUPPORTS_NUMA
202 select ARCH_SUSPEND_POSSIBLE
206 depends on CPU_SH4 || CPU_SH4A
211 prompt "Processor sub-type selection"
217 # SH-2 Processor Support
219 config CPU_SUBTYPE_SH7619
220 bool "Support SH7619 processor"
222 select SYS_SUPPORTS_SH_CMT
224 config CPU_SUBTYPE_J2
225 bool "Support J2 processor"
227 select SYS_SUPPORTS_SMP
228 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
230 # SH-2A Processor Support
232 config CPU_SUBTYPE_SH7201
233 bool "Support SH7201 processor"
236 select SYS_SUPPORTS_SH_MTU2
238 config CPU_SUBTYPE_SH7203
239 bool "Support SH7203 processor"
242 select SYS_SUPPORTS_SH_CMT
243 select SYS_SUPPORTS_SH_MTU2
246 config CPU_SUBTYPE_SH7206
247 bool "Support SH7206 processor"
249 select SYS_SUPPORTS_SH_CMT
250 select SYS_SUPPORTS_SH_MTU2
252 config CPU_SUBTYPE_SH7263
253 bool "Support SH7263 processor"
256 select SYS_SUPPORTS_SH_CMT
257 select SYS_SUPPORTS_SH_MTU2
259 config CPU_SUBTYPE_SH7264
260 bool "Support SH7264 processor"
263 select SYS_SUPPORTS_SH_CMT
264 select SYS_SUPPORTS_SH_MTU2
267 config CPU_SUBTYPE_SH7269
268 bool "Support SH7269 processor"
271 select SYS_SUPPORTS_SH_CMT
272 select SYS_SUPPORTS_SH_MTU2
275 config CPU_SUBTYPE_MXG
276 bool "Support MX-G processor"
278 select SYS_SUPPORTS_SH_MTU2
280 Select MX-G if running on an R8A03022BG part.
282 # SH-3 Processor Support
284 config CPU_SUBTYPE_SH7705
285 bool "Support SH7705 processor"
288 config CPU_SUBTYPE_SH7706
289 bool "Support SH7706 processor"
292 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
294 config CPU_SUBTYPE_SH7707
295 bool "Support SH7707 processor"
298 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
300 config CPU_SUBTYPE_SH7708
301 bool "Support SH7708 processor"
304 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
305 if you have a 100 Mhz SH-3 HD6417708R CPU.
307 config CPU_SUBTYPE_SH7709
308 bool "Support SH7709 processor"
311 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
313 config CPU_SUBTYPE_SH7710
314 bool "Support SH7710 processor"
318 Select SH7710 if you have a SH3-DSP SH7710 CPU.
320 config CPU_SUBTYPE_SH7712
321 bool "Support SH7712 processor"
325 Select SH7712 if you have a SH3-DSP SH7712 CPU.
327 config CPU_SUBTYPE_SH7720
328 bool "Support SH7720 processor"
331 select SYS_SUPPORTS_SH_CMT
332 select USB_OHCI_SH if USB_OHCI_HCD
335 Select SH7720 if you have a SH3-DSP SH7720 CPU.
337 config CPU_SUBTYPE_SH7721
338 bool "Support SH7721 processor"
341 select SYS_SUPPORTS_SH_CMT
342 select USB_OHCI_SH if USB_OHCI_HCD
344 Select SH7721 if you have a SH3-DSP SH7721 CPU.
346 # SH-4 Processor Support
348 config CPU_SUBTYPE_SH7750
349 bool "Support SH7750 processor"
352 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
354 config CPU_SUBTYPE_SH7091
355 bool "Support SH7091 processor"
358 Select SH7091 if you have an SH-4 based Sega device (such as
359 the Dreamcast, Naomi, and Naomi 2).
361 config CPU_SUBTYPE_SH7750R
362 bool "Support SH7750R processor"
365 config CPU_SUBTYPE_SH7750S
366 bool "Support SH7750S processor"
369 config CPU_SUBTYPE_SH7751
370 bool "Support SH7751 processor"
373 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
374 or if you have a HD6417751R CPU.
376 config CPU_SUBTYPE_SH7751R
377 bool "Support SH7751R processor"
380 config CPU_SUBTYPE_SH7760
381 bool "Support SH7760 processor"
384 config CPU_SUBTYPE_SH4_202
385 bool "Support SH4-202 processor"
388 # SH-4A Processor Support
390 config CPU_SUBTYPE_SH7723
391 bool "Support SH7723 processor"
395 select ARCH_SPARSEMEM_ENABLE
396 select SYS_SUPPORTS_SH_CMT
399 Select SH7723 if you have an SH-MobileR2 CPU.
401 config CPU_SUBTYPE_SH7724
402 bool "Support SH7724 processor"
406 select ARCH_SPARSEMEM_ENABLE
407 select SYS_SUPPORTS_SH_CMT
410 Select SH7724 if you have an SH-MobileR2R CPU.
412 config CPU_SUBTYPE_SH7734
413 bool "Support SH7734 processor"
418 Select SH7734 if you have a SH4A SH7734 CPU.
420 config CPU_SUBTYPE_SH7757
421 bool "Support SH7757 processor"
426 Select SH7757 if you have a SH4A SH7757 CPU.
428 config CPU_SUBTYPE_SH7763
429 bool "Support SH7763 processor"
431 select USB_OHCI_SH if USB_OHCI_HCD
433 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
435 config CPU_SUBTYPE_SH7770
436 bool "Support SH7770 processor"
439 config CPU_SUBTYPE_SH7780
440 bool "Support SH7780 processor"
443 config CPU_SUBTYPE_SH7785
444 bool "Support SH7785 processor"
447 select ARCH_SPARSEMEM_ENABLE
448 select SYS_SUPPORTS_NUMA
451 config CPU_SUBTYPE_SH7786
452 bool "Support SH7786 processor"
455 select CPU_HAS_PTEAEX
456 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
457 select USB_OHCI_SH if USB_OHCI_HCD
458 select USB_EHCI_SH if USB_EHCI_HCD
461 config CPU_SUBTYPE_SHX3
462 bool "Support SH-X3 processor"
465 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
469 # SH4AL-DSP Processor Support
471 config CPU_SUBTYPE_SH7343
472 bool "Support SH7343 processor"
475 select SYS_SUPPORTS_SH_CMT
477 config CPU_SUBTYPE_SH7722
478 bool "Support SH7722 processor"
482 select ARCH_SPARSEMEM_ENABLE
483 select SYS_SUPPORTS_NUMA
484 select SYS_SUPPORTS_SH_CMT
487 config CPU_SUBTYPE_SH7366
488 bool "Support SH7366 processor"
492 select ARCH_SPARSEMEM_ENABLE
493 select SYS_SUPPORTS_NUMA
494 select SYS_SUPPORTS_SH_CMT
498 source "arch/sh/mm/Kconfig"
500 source "arch/sh/Kconfig.cpu"
502 source "arch/sh/boards/Kconfig"
504 menu "Timer and clock configuration"
507 int "Peripheral clock frequency (in Hz)"
508 depends on SH_CLK_CPG_LEGACY
509 default "31250000" if CPU_SUBTYPE_SH7619
510 default "33333333" if CPU_SUBTYPE_SH7770 || \
511 CPU_SUBTYPE_SH7760 || \
512 CPU_SUBTYPE_SH7705 || \
513 CPU_SUBTYPE_SH7203 || \
514 CPU_SUBTYPE_SH7206 || \
515 CPU_SUBTYPE_SH7263 || \
517 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
518 default "66000000" if CPU_SUBTYPE_SH4_202
521 This option is used to specify the peripheral clock frequency.
522 This is necessary for determining the reference clock value on
523 platforms lacking an RTC.
528 config SH_CLK_CPG_LEGACY
529 depends on SH_CLK_CPG
530 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
531 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
532 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
537 menu "CPU Frequency scaling"
538 source "drivers/cpufreq/Kconfig"
541 source "arch/sh/drivers/Kconfig"
545 menu "Kernel features"
547 source "kernel/Kconfig.hz"
550 bool "kexec system call (EXPERIMENTAL)"
554 kexec is a system call that implements the ability to shutdown your
555 current kernel, and to start another kernel. It is like a reboot
556 but it is independent of the system firmware. And like a reboot
557 you can start any kernel with it, not just Linux.
559 The name comes from the similarity to the exec system call.
561 It is an ongoing process to be certain the hardware in a machine
562 is properly shutdown, so do not be surprised if this code does not
563 initially work for you. As of this writing the exact hardware
564 interface is strongly in flux, so no good recommendation can be
568 bool "kernel crash dumps (EXPERIMENTAL)"
569 depends on BROKEN_ON_SMP
571 Generate crash dump after being started by kexec.
572 This should be normally only set in special crash dump kernels
573 which are loaded in the main kernel with kexec-tools into
574 a specially reserved region and then later executed after
575 a crash by kdump/kexec. The crash dump kernel must be compiled
576 to a memory address not used by the main kernel using
579 For more details see Documentation/admin-guide/kdump/kdump.rst
582 bool "kexec jump (EXPERIMENTAL)"
583 depends on KEXEC && HIBERNATION
585 Jump between original kernel and kexeced kernel and invoke
588 config PHYSICAL_START
589 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
592 This gives the physical address where the kernel is loaded
593 and is ordinarily the same as MEMORY_START.
595 Different values are primarily used in the case of kexec on panic
596 where the fail safe kernel needs to run at a different address
597 than the panic-ed kernel.
600 bool "Enable seccomp to safely compute untrusted bytecode"
603 This kernel feature is useful for number crunching applications
604 that may need to compute untrusted bytecode during their
605 execution. By using pipes or other transports made available to
606 the process as file descriptors supporting the read/write
607 syscalls, it's possible to isolate those applications in
608 their own address space using seccomp. Once seccomp is
609 enabled via prctl, it cannot be disabled and the task is only
610 allowed to execute a few safe syscalls defined by each seccomp
616 bool "Symmetric multi-processing support"
617 depends on SYS_SUPPORTS_SMP
619 This enables support for systems with more than one CPU. If you have
620 a system with only one CPU, say N. If you have a system with more
623 If you say N here, the kernel will run on uni- and multiprocessor
624 machines, but will use only one CPU of a multiprocessor machine. If
625 you say Y here, the kernel will run on many, but not all,
626 uniprocessor machines. On a uniprocessor machine, the kernel
627 will run faster if you say N here.
629 People using multiprocessor machines who say Y here should also say
630 Y to "Enhanced Real Time Clock Support", below.
632 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
633 available at <http://www.tldp.org/docs.html#howto>.
635 If you don't know what to do here, say N.
638 int "Maximum number of CPUs (2-32)"
641 default "4" if CPU_SUBTYPE_SHX3
644 This allows you to specify the maximum number of CPUs which this
645 kernel will support. The maximum supported value is 32 and the
646 minimum value which makes sense is 2.
648 This is purely to save memory - each supported CPU adds
649 approximately eight kilobytes to the kernel image.
652 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
655 Say Y here to experiment with turning CPUs off and on. CPUs
656 can be controlled through /sys/devices/system/cpu.
662 This enables support for gUSA (general UserSpace Atomicity).
663 This is the default implementation for both UP and non-ll/sc
664 CPUs, and is used by the libc, amongst others.
666 For additional information, design information can be found
667 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
669 This should only be disabled for special cases where alternate
670 atomicity implementations exist.
673 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
674 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
676 Enabling this option will allow the kernel to implement some
677 atomic operations using a software implementation of load-locked/
678 store-conditional (LLSC). On machines which do not have hardware
679 LLSC, this should be more efficient than the other alternative of
680 disabling interrupts around the atomic sequence.
682 config HW_PERF_EVENTS
683 bool "Enable hardware performance counter support for perf events"
684 depends on PERF_EVENTS && CPU_HAS_PMU
687 Enable hardware performance counter support for perf events. If
688 disabled, perf events will use software events only.
690 source "drivers/sh/Kconfig"
696 config USE_BUILTIN_DTB
697 bool "Use builtin DTB"
699 depends on SH_DEVICE_TREE
701 Link a device tree blob for particular hardware into the kernel,
702 suppressing use of the DTB pointer provided by the bootloader.
703 This option should only be used with legacy bootloaders that are
704 not capable of providing a DTB to the kernel, or for experimental
705 hardware without stable device tree bindings.
707 config BUILTIN_DTB_SOURCE
708 string "Source file for builtin DTB"
710 depends on USE_BUILTIN_DTB
712 Base name (without suffix, relative to arch/sh/boot/dts) for the
713 a DTS file that will be used to produce the DTB linked into the
716 config ZERO_PAGE_OFFSET
718 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
719 SH_7751_SOLUTION_ENGINE
720 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
721 default "0x00002000" if PAGE_SIZE_8KB
724 This sets the default offset of zero page.
726 config BOOT_LINK_OFFSET
728 default "0x00210000" if SH_SHMIN
729 default "0x00400000" if SH_CAYMAN
730 default "0x00810000" if SH_7780_SOLUTION_ENGINE
731 default "0x009e0000" if SH_TITAN
732 default "0x01800000" if SH_SDK7780
733 default "0x02000000" if SH_EDOSK7760
736 This option allows you to set the link address offset of the zImage.
737 This can be useful if you are on a board which has a small amount of
742 default "0x00001000" if PAGE_SIZE_4KB
743 default "0x00002000" if PAGE_SIZE_8KB
744 default "0x00004000" if PAGE_SIZE_16KB
745 default "0x00010000" if PAGE_SIZE_64KB
748 config ROMIMAGE_MMCIF
749 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
750 depends on CPU_SUBTYPE_SH7724
752 Say Y here to include experimental MMCIF loading code in
753 romImage. With this enabled it is possible to write the romImage
754 kernel image to an MMC card and boot the kernel straight from
755 the reset vector. At reset the processor Mask ROM will load the
756 first part of the romImage which in turn loads the rest the kernel
757 image to RAM using the MMCIF hardware block.
760 prompt "Kernel command line"
762 default CMDLINE_OVERWRITE
764 Setting this option allows the kernel command line arguments
767 config CMDLINE_OVERWRITE
768 bool "Overwrite bootloader kernel arguments"
770 Given string will overwrite any arguments passed in by
773 config CMDLINE_EXTEND
774 bool "Extend bootloader kernel arguments"
776 Given string will be concatenated with arguments passed in
782 string "Kernel command line arguments string"
783 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
784 default "console=ttySC1,115200"
791 tristate "SuperHyway Bus support"
792 depends on CPU_SUBTYPE_SH4_202
795 bool "Maple Bus support"
796 depends on SH_DREAMCAST
798 The Maple Bus is SEGA's serial communication bus for peripherals
799 on the Dreamcast. Without this bus support you won't be able to
800 get your Dreamcast keyboard etc to work, so most users
801 probably want to say 'Y' here, unless you are only using the
802 Dreamcast with a serial line terminal or a remote network
807 menu "Power management options (EXPERIMENTAL)"
809 source "kernel/power/Kconfig"
811 source "drivers/cpuidle/Kconfig"