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_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
20 select GENERIC_IDLE_POLL_SETUP
21 select GENERIC_IRQ_SHOW
22 select GENERIC_PCI_IOMAP if PCI
23 select GENERIC_SCHED_CLOCK
24 select GENERIC_STRNCPY_FROM_USER
25 select GENERIC_STRNLEN_USER
26 select GENERIC_SMP_IDLE_THREAD
27 select GUP_GET_PTE_LOW_HIGH if X2TLB
28 select HAVE_ARCH_AUDITSYSCALL
30 select HAVE_ARCH_SECCOMP_FILTER
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_DMA if !MMU && !DMA_COHERENT
65 select NO_GENERIC_PCI_IOPORT_MAP if PCI
68 select PCI_DOMAINS if PCI
70 select PERF_USE_VMALLOC
75 The SuperH is a RISC processor targeted for use in embedded systems
76 and consumer electronics; it was also used in the Sega Dreamcast
77 gaming console. The SuperH port has a home page at
78 <http://www.linux-sh.org/>.
84 config GENERIC_HWEIGHT
87 config GENERIC_CALIBRATE_DELAY
90 config GENERIC_LOCKBREAK
92 depends on SMP && PREEMPTION
94 config ARCH_SUSPEND_POSSIBLE
97 config ARCH_HIBERNATION_POSSIBLE
100 config SYS_SUPPORTS_APM_EMULATION
102 select ARCH_SUSPEND_POSSIBLE
104 config SYS_SUPPORTS_HUGETLBFS
107 config SYS_SUPPORTS_SMP
110 config SYS_SUPPORTS_NUMA
113 config STACKTRACE_SUPPORT
116 config LOCKDEP_SUPPORT
119 config ARCH_HAS_ILOG2_U32
122 config ARCH_HAS_ILOG2_U64
127 depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
139 config DMA_NONCOHERENT
140 def_bool !NO_DMA && !DMA_COHERENT
141 select ARCH_HAS_DMA_PREP_COHERENT
142 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
143 select DMA_DIRECT_REMAP
145 config PGTABLE_LEVELS
161 select UNCACHED_MAPPING
167 select OF_EARLY_FLATTREE
171 select CPU_HAS_INTEVT
174 select SYS_SUPPORTS_SH_TMU
178 select CPU_HAS_INTEVT
180 select CPU_HAS_FPU if !CPU_SH4AL_DSP
182 select SYS_SUPPORTS_SH_TMU
183 select SYS_SUPPORTS_HUGETLBFS if MMU
200 select SYS_SUPPORTS_SMP
201 select SYS_SUPPORTS_NUMA
205 select ARCH_SUSPEND_POSSIBLE
209 depends on CPU_SH4 || CPU_SH4A
214 prompt "Processor sub-type selection"
220 # SH-2 Processor Support
222 config CPU_SUBTYPE_SH7619
223 bool "Support SH7619 processor"
225 select SYS_SUPPORTS_SH_CMT
227 config CPU_SUBTYPE_J2
228 bool "Support J2 processor"
230 select SYS_SUPPORTS_SMP
231 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
233 # SH-2A Processor Support
235 config CPU_SUBTYPE_SH7201
236 bool "Support SH7201 processor"
239 select SYS_SUPPORTS_SH_MTU2
241 config CPU_SUBTYPE_SH7203
242 bool "Support SH7203 processor"
245 select SYS_SUPPORTS_SH_CMT
246 select SYS_SUPPORTS_SH_MTU2
249 config CPU_SUBTYPE_SH7206
250 bool "Support SH7206 processor"
252 select SYS_SUPPORTS_SH_CMT
253 select SYS_SUPPORTS_SH_MTU2
255 config CPU_SUBTYPE_SH7263
256 bool "Support SH7263 processor"
259 select SYS_SUPPORTS_SH_CMT
260 select SYS_SUPPORTS_SH_MTU2
262 config CPU_SUBTYPE_SH7264
263 bool "Support SH7264 processor"
266 select SYS_SUPPORTS_SH_CMT
267 select SYS_SUPPORTS_SH_MTU2
270 config CPU_SUBTYPE_SH7269
271 bool "Support SH7269 processor"
274 select SYS_SUPPORTS_SH_CMT
275 select SYS_SUPPORTS_SH_MTU2
278 config CPU_SUBTYPE_MXG
279 bool "Support MX-G processor"
281 select SYS_SUPPORTS_SH_MTU2
283 Select MX-G if running on an R8A03022BG part.
285 # SH-3 Processor Support
287 config CPU_SUBTYPE_SH7705
288 bool "Support SH7705 processor"
291 config CPU_SUBTYPE_SH7706
292 bool "Support SH7706 processor"
295 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
297 config CPU_SUBTYPE_SH7707
298 bool "Support SH7707 processor"
301 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
303 config CPU_SUBTYPE_SH7708
304 bool "Support SH7708 processor"
307 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
308 if you have a 100 Mhz SH-3 HD6417708R CPU.
310 config CPU_SUBTYPE_SH7709
311 bool "Support SH7709 processor"
314 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
316 config CPU_SUBTYPE_SH7710
317 bool "Support SH7710 processor"
321 Select SH7710 if you have a SH3-DSP SH7710 CPU.
323 config CPU_SUBTYPE_SH7712
324 bool "Support SH7712 processor"
328 Select SH7712 if you have a SH3-DSP SH7712 CPU.
330 config CPU_SUBTYPE_SH7720
331 bool "Support SH7720 processor"
334 select SYS_SUPPORTS_SH_CMT
335 select USB_OHCI_SH if USB_OHCI_HCD
338 Select SH7720 if you have a SH3-DSP SH7720 CPU.
340 config CPU_SUBTYPE_SH7721
341 bool "Support SH7721 processor"
344 select SYS_SUPPORTS_SH_CMT
345 select USB_OHCI_SH if USB_OHCI_HCD
347 Select SH7721 if you have a SH3-DSP SH7721 CPU.
349 # SH-4 Processor Support
351 config CPU_SUBTYPE_SH7750
352 bool "Support SH7750 processor"
355 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
357 config CPU_SUBTYPE_SH7091
358 bool "Support SH7091 processor"
361 Select SH7091 if you have an SH-4 based Sega device (such as
362 the Dreamcast, Naomi, and Naomi 2).
364 config CPU_SUBTYPE_SH7750R
365 bool "Support SH7750R processor"
368 config CPU_SUBTYPE_SH7750S
369 bool "Support SH7750S processor"
372 config CPU_SUBTYPE_SH7751
373 bool "Support SH7751 processor"
376 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
377 or if you have a HD6417751R CPU.
379 config CPU_SUBTYPE_SH7751R
380 bool "Support SH7751R processor"
383 config CPU_SUBTYPE_SH7760
384 bool "Support SH7760 processor"
387 config CPU_SUBTYPE_SH4_202
388 bool "Support SH4-202 processor"
391 # SH-4A Processor Support
393 config CPU_SUBTYPE_SH7723
394 bool "Support SH7723 processor"
398 select ARCH_SPARSEMEM_ENABLE
399 select SYS_SUPPORTS_SH_CMT
402 Select SH7723 if you have an SH-MobileR2 CPU.
404 config CPU_SUBTYPE_SH7724
405 bool "Support SH7724 processor"
409 select ARCH_SPARSEMEM_ENABLE
410 select SYS_SUPPORTS_SH_CMT
413 Select SH7724 if you have an SH-MobileR2R CPU.
415 config CPU_SUBTYPE_SH7734
416 bool "Support SH7734 processor"
421 Select SH7734 if you have a SH4A SH7734 CPU.
423 config CPU_SUBTYPE_SH7757
424 bool "Support SH7757 processor"
429 Select SH7757 if you have a SH4A SH7757 CPU.
431 config CPU_SUBTYPE_SH7763
432 bool "Support SH7763 processor"
434 select USB_OHCI_SH if USB_OHCI_HCD
436 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
438 config CPU_SUBTYPE_SH7770
439 bool "Support SH7770 processor"
442 config CPU_SUBTYPE_SH7780
443 bool "Support SH7780 processor"
446 config CPU_SUBTYPE_SH7785
447 bool "Support SH7785 processor"
450 select ARCH_SPARSEMEM_ENABLE
451 select SYS_SUPPORTS_NUMA
454 config CPU_SUBTYPE_SH7786
455 bool "Support SH7786 processor"
458 select CPU_HAS_PTEAEX
459 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
460 select USB_OHCI_SH if USB_OHCI_HCD
461 select USB_EHCI_SH if USB_EHCI_HCD
464 config CPU_SUBTYPE_SHX3
465 bool "Support SH-X3 processor"
468 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
472 # SH4AL-DSP Processor Support
474 config CPU_SUBTYPE_SH7343
475 bool "Support SH7343 processor"
478 select SYS_SUPPORTS_SH_CMT
480 config CPU_SUBTYPE_SH7722
481 bool "Support SH7722 processor"
485 select ARCH_SPARSEMEM_ENABLE
486 select SYS_SUPPORTS_NUMA
487 select SYS_SUPPORTS_SH_CMT
490 config CPU_SUBTYPE_SH7366
491 bool "Support SH7366 processor"
495 select ARCH_SPARSEMEM_ENABLE
496 select SYS_SUPPORTS_NUMA
497 select SYS_SUPPORTS_SH_CMT
501 source "arch/sh/mm/Kconfig"
503 source "arch/sh/Kconfig.cpu"
505 source "arch/sh/boards/Kconfig"
507 menu "Timer and clock configuration"
510 int "Peripheral clock frequency (in Hz)"
511 depends on SH_CLK_CPG_LEGACY
512 default "31250000" if CPU_SUBTYPE_SH7619
513 default "33333333" if CPU_SUBTYPE_SH7770 || \
514 CPU_SUBTYPE_SH7760 || \
515 CPU_SUBTYPE_SH7705 || \
516 CPU_SUBTYPE_SH7203 || \
517 CPU_SUBTYPE_SH7206 || \
518 CPU_SUBTYPE_SH7263 || \
520 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
521 default "66000000" if CPU_SUBTYPE_SH4_202
524 This option is used to specify the peripheral clock frequency.
525 This is necessary for determining the reference clock value on
526 platforms lacking an RTC.
531 config SH_CLK_CPG_LEGACY
532 depends on SH_CLK_CPG
533 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
534 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
535 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
540 menu "CPU Frequency scaling"
541 source "drivers/cpufreq/Kconfig"
544 source "arch/sh/drivers/Kconfig"
548 menu "Kernel features"
550 source "kernel/Kconfig.hz"
553 bool "kexec system call (EXPERIMENTAL)"
557 kexec is a system call that implements the ability to shutdown your
558 current kernel, and to start another kernel. It is like a reboot
559 but it is independent of the system firmware. And like a reboot
560 you can start any kernel with it, not just Linux.
562 The name comes from the similarity to the exec system call.
564 It is an ongoing process to be certain the hardware in a machine
565 is properly shutdown, so do not be surprised if this code does not
566 initially work for you. As of this writing the exact hardware
567 interface is strongly in flux, so no good recommendation can be
571 bool "kernel crash dumps (EXPERIMENTAL)"
572 depends on BROKEN_ON_SMP
574 Generate crash dump after being started by kexec.
575 This should be normally only set in special crash dump kernels
576 which are loaded in the main kernel with kexec-tools into
577 a specially reserved region and then later executed after
578 a crash by kdump/kexec. The crash dump kernel must be compiled
579 to a memory address not used by the main kernel using
582 For more details see Documentation/admin-guide/kdump/kdump.rst
585 bool "kexec jump (EXPERIMENTAL)"
586 depends on KEXEC && HIBERNATION
588 Jump between original kernel and kexeced kernel and invoke
591 config PHYSICAL_START
592 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
595 This gives the physical address where the kernel is loaded
596 and is ordinarily the same as MEMORY_START.
598 Different values are primarily used in the case of kexec on panic
599 where the fail safe kernel needs to run at a different address
600 than the panic-ed kernel.
603 bool "Symmetric multi-processing support"
604 depends on SYS_SUPPORTS_SMP
606 This enables support for systems with more than one CPU. If you have
607 a system with only one CPU, say N. If you have a system with more
610 If you say N here, the kernel will run on uni- and multiprocessor
611 machines, but will use only one CPU of a multiprocessor machine. If
612 you say Y here, the kernel will run on many, but not all,
613 uniprocessor machines. On a uniprocessor machine, the kernel
614 will run faster if you say N here.
616 People using multiprocessor machines who say Y here should also say
617 Y to "Enhanced Real Time Clock Support", below.
619 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
620 available at <https://www.tldp.org/docs.html#howto>.
622 If you don't know what to do here, say N.
625 int "Maximum number of CPUs (2-32)"
628 default "4" if CPU_SUBTYPE_SHX3
631 This allows you to specify the maximum number of CPUs which this
632 kernel will support. The maximum supported value is 32 and the
633 minimum value which makes sense is 2.
635 This is purely to save memory - each supported CPU adds
636 approximately eight kilobytes to the kernel image.
639 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
642 Say Y here to experiment with turning CPUs off and on. CPUs
643 can be controlled through /sys/devices/system/cpu.
649 This enables support for gUSA (general UserSpace Atomicity).
650 This is the default implementation for both UP and non-ll/sc
651 CPUs, and is used by the libc, amongst others.
653 For additional information, design information can be found
654 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
656 This should only be disabled for special cases where alternate
657 atomicity implementations exist.
660 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
661 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
663 Enabling this option will allow the kernel to implement some
664 atomic operations using a software implementation of load-locked/
665 store-conditional (LLSC). On machines which do not have hardware
666 LLSC, this should be more efficient than the other alternative of
667 disabling interrupts around the atomic sequence.
669 config HW_PERF_EVENTS
670 bool "Enable hardware performance counter support for perf events"
671 depends on PERF_EVENTS && CPU_HAS_PMU
674 Enable hardware performance counter support for perf events. If
675 disabled, perf events will use software events only.
677 source "drivers/sh/Kconfig"
683 config USE_BUILTIN_DTB
684 bool "Use builtin DTB"
686 depends on SH_DEVICE_TREE
688 Link a device tree blob for particular hardware into the kernel,
689 suppressing use of the DTB pointer provided by the bootloader.
690 This option should only be used with legacy bootloaders that are
691 not capable of providing a DTB to the kernel, or for experimental
692 hardware without stable device tree bindings.
694 config BUILTIN_DTB_SOURCE
695 string "Source file for builtin DTB"
697 depends on USE_BUILTIN_DTB
699 Base name (without suffix, relative to arch/sh/boot/dts) for the
700 a DTS file that will be used to produce the DTB linked into the
703 config ZERO_PAGE_OFFSET
705 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
706 SH_7751_SOLUTION_ENGINE
707 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
708 default "0x00002000" if PAGE_SIZE_8KB
711 This sets the default offset of zero page.
713 config BOOT_LINK_OFFSET
715 default "0x00210000" if SH_SHMIN
716 default "0x00810000" if SH_7780_SOLUTION_ENGINE
717 default "0x009e0000" if SH_TITAN
718 default "0x01800000" if SH_SDK7780
719 default "0x02000000" if SH_EDOSK7760
722 This option allows you to set the link address offset of the zImage.
723 This can be useful if you are on a board which has a small amount of
728 default "0x00001000" if PAGE_SIZE_4KB
729 default "0x00002000" if PAGE_SIZE_8KB
730 default "0x00004000" if PAGE_SIZE_16KB
731 default "0x00010000" if PAGE_SIZE_64KB
734 config ROMIMAGE_MMCIF
735 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
736 depends on CPU_SUBTYPE_SH7724
738 Say Y here to include experimental MMCIF loading code in
739 romImage. With this enabled it is possible to write the romImage
740 kernel image to an MMC card and boot the kernel straight from
741 the reset vector. At reset the processor Mask ROM will load the
742 first part of the romImage which in turn loads the rest the kernel
743 image to RAM using the MMCIF hardware block.
746 prompt "Kernel command line"
748 default CMDLINE_OVERWRITE
750 Setting this option allows the kernel command line arguments
753 config CMDLINE_OVERWRITE
754 bool "Overwrite bootloader kernel arguments"
756 Given string will overwrite any arguments passed in by
759 config CMDLINE_EXTEND
760 bool "Extend bootloader kernel arguments"
762 Given string will be concatenated with arguments passed in
768 string "Kernel command line arguments string"
769 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
770 default "console=ttySC1,115200"
777 tristate "SuperHyway Bus support"
778 depends on CPU_SUBTYPE_SH4_202
781 bool "Maple Bus support"
782 depends on SH_DREAMCAST
784 The Maple Bus is SEGA's serial communication bus for peripherals
785 on the Dreamcast. Without this bus support you won't be able to
786 get your Dreamcast keyboard etc to work, so most users
787 probably want to say 'Y' here, unless you are only using the
788 Dreamcast with a serial line terminal or a remote network
793 menu "Power management options (EXPERIMENTAL)"
795 source "kernel/power/Kconfig"
797 source "drivers/cpuidle/Kconfig"