1 # SPDX-License-Identifier: GPL-2.0
4 select ARCH_32BIT_OFF_T
5 select ARCH_ENABLE_MEMORY_HOTPLUG if SPARSEMEM && MMU
6 select ARCH_ENABLE_MEMORY_HOTREMOVE if SPARSEMEM && MMU
7 select ARCH_HAVE_CUSTOM_GPIO_H
8 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
9 select ARCH_HAS_BINFMT_FLAT if !MMU
10 select ARCH_HAS_CURRENT_STACK_POINTER
11 select ARCH_HAS_GIGANTIC_PAGE
12 select ARCH_HAS_GCOV_PROFILE_ALL
13 select ARCH_HAS_PTE_SPECIAL
14 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
15 select ARCH_HIBERNATION_POSSIBLE if MMU
16 select ARCH_MIGHT_HAVE_PC_PARPORT
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select CPU_NO_EFFICIENT_FFS
19 select DMA_DECLARE_COHERENT
20 select GENERIC_ATOMIC64
21 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
22 select GENERIC_IDLE_POLL_SETUP
23 select GENERIC_IRQ_SHOW
24 select GENERIC_PCI_IOMAP if PCI
25 select GENERIC_SCHED_CLOCK
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_FTRACE_MCOUNT_RECORD
39 select HAVE_HW_BREAKPOINT
40 select HAVE_IOREMAP_PROT if MMU && !X2TLB
41 select HAVE_KERNEL_BZIP2
42 select HAVE_KERNEL_GZIP
43 select HAVE_KERNEL_LZMA
44 select HAVE_KERNEL_LZO
47 select HAVE_KRETPROBES
48 select HAVE_MIXED_BREAKPOINTS_REGS
49 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
51 select HAVE_PATA_PLATFORM
52 select HAVE_PERF_EVENTS
53 select HAVE_REGS_AND_STACK_ACCESS_API
55 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
56 select HAVE_STACKPROTECTOR
57 select HAVE_SYSCALL_TRACEPOINTS
58 select IRQ_FORCED_THREADING
59 select MODULES_USE_ELF_RELA
60 select NEED_SG_DMA_LENGTH
61 select NO_DMA if !MMU && !DMA_COHERENT
62 select NO_GENERIC_PCI_IOPORT_MAP if PCI
65 select PCI_DOMAINS if PCI
67 select PERF_USE_VMALLOC
70 select TRACE_IRQFLAGS_SUPPORT
72 The SuperH is a RISC processor targeted for use in embedded systems
73 and consumer electronics; it was also used in the Sega Dreamcast
74 gaming console. The SuperH port has a home page at
75 <http://www.linux-sh.org/>.
81 config GENERIC_HWEIGHT
84 config GENERIC_CALIBRATE_DELAY
87 config GENERIC_LOCKBREAK
89 depends on SMP && PREEMPTION
91 config ARCH_SUSPEND_POSSIBLE
94 config ARCH_HIBERNATION_POSSIBLE
97 config SYS_SUPPORTS_APM_EMULATION
99 select ARCH_SUSPEND_POSSIBLE
101 config SYS_SUPPORTS_SMP
104 config SYS_SUPPORTS_NUMA
107 config STACKTRACE_SUPPORT
110 config LOCKDEP_SUPPORT
113 config ARCH_HAS_ILOG2_U32
116 config ARCH_HAS_ILOG2_U64
121 depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
133 config DMA_NONCOHERENT
134 def_bool !NO_DMA && !DMA_COHERENT
135 select ARCH_HAS_DMA_PREP_COHERENT
136 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
137 select DMA_DIRECT_REMAP
139 config PGTABLE_LEVELS
155 select UNCACHED_MAPPING
161 select OF_EARLY_FLATTREE
165 select CPU_HAS_INTEVT
168 select SYS_SUPPORTS_SH_TMU
172 select ARCH_SUPPORTS_HUGETLBFS if MMU
173 select CPU_HAS_INTEVT
175 select CPU_HAS_FPU if !CPU_SH4AL_DSP
177 select SYS_SUPPORTS_SH_TMU
194 select SYS_SUPPORTS_SMP
195 select SYS_SUPPORTS_NUMA
199 select ARCH_SUSPEND_POSSIBLE
203 depends on CPU_SH4 || CPU_SH4A
208 prompt "Processor sub-type selection"
214 # SH-2 Processor Support
216 config CPU_SUBTYPE_SH7619
217 bool "Support SH7619 processor"
219 select SYS_SUPPORTS_SH_CMT
221 config CPU_SUBTYPE_J2
222 bool "Support J2 processor"
224 select SYS_SUPPORTS_SMP
225 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
227 # SH-2A Processor Support
229 config CPU_SUBTYPE_SH7201
230 bool "Support SH7201 processor"
233 select SYS_SUPPORTS_SH_MTU2
235 config CPU_SUBTYPE_SH7203
236 bool "Support SH7203 processor"
239 select SYS_SUPPORTS_SH_CMT
240 select SYS_SUPPORTS_SH_MTU2
243 config CPU_SUBTYPE_SH7206
244 bool "Support SH7206 processor"
246 select SYS_SUPPORTS_SH_CMT
247 select SYS_SUPPORTS_SH_MTU2
249 config CPU_SUBTYPE_SH7263
250 bool "Support SH7263 processor"
253 select SYS_SUPPORTS_SH_CMT
254 select SYS_SUPPORTS_SH_MTU2
256 config CPU_SUBTYPE_SH7264
257 bool "Support SH7264 processor"
260 select SYS_SUPPORTS_SH_CMT
261 select SYS_SUPPORTS_SH_MTU2
264 config CPU_SUBTYPE_SH7269
265 bool "Support SH7269 processor"
268 select SYS_SUPPORTS_SH_CMT
269 select SYS_SUPPORTS_SH_MTU2
272 config CPU_SUBTYPE_MXG
273 bool "Support MX-G processor"
275 select SYS_SUPPORTS_SH_MTU2
277 Select MX-G if running on an R8A03022BG part.
279 # SH-3 Processor Support
281 config CPU_SUBTYPE_SH7705
282 bool "Support SH7705 processor"
285 config CPU_SUBTYPE_SH7706
286 bool "Support SH7706 processor"
289 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
291 config CPU_SUBTYPE_SH7707
292 bool "Support SH7707 processor"
295 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
297 config CPU_SUBTYPE_SH7708
298 bool "Support SH7708 processor"
301 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
302 if you have a 100 Mhz SH-3 HD6417708R CPU.
304 config CPU_SUBTYPE_SH7709
305 bool "Support SH7709 processor"
308 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
310 config CPU_SUBTYPE_SH7710
311 bool "Support SH7710 processor"
315 Select SH7710 if you have a SH3-DSP SH7710 CPU.
317 config CPU_SUBTYPE_SH7712
318 bool "Support SH7712 processor"
322 Select SH7712 if you have a SH3-DSP SH7712 CPU.
324 config CPU_SUBTYPE_SH7720
325 bool "Support SH7720 processor"
328 select SYS_SUPPORTS_SH_CMT
329 select USB_OHCI_SH if USB_OHCI_HCD
332 Select SH7720 if you have a SH3-DSP SH7720 CPU.
334 config CPU_SUBTYPE_SH7721
335 bool "Support SH7721 processor"
338 select SYS_SUPPORTS_SH_CMT
339 select USB_OHCI_SH if USB_OHCI_HCD
341 Select SH7721 if you have a SH3-DSP SH7721 CPU.
343 # SH-4 Processor Support
345 config CPU_SUBTYPE_SH7750
346 bool "Support SH7750 processor"
349 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
351 config CPU_SUBTYPE_SH7091
352 bool "Support SH7091 processor"
355 Select SH7091 if you have an SH-4 based Sega device (such as
356 the Dreamcast, Naomi, and Naomi 2).
358 config CPU_SUBTYPE_SH7750R
359 bool "Support SH7750R processor"
362 config CPU_SUBTYPE_SH7750S
363 bool "Support SH7750S processor"
366 config CPU_SUBTYPE_SH7751
367 bool "Support SH7751 processor"
370 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
371 or if you have a HD6417751R CPU.
373 config CPU_SUBTYPE_SH7751R
374 bool "Support SH7751R processor"
377 config CPU_SUBTYPE_SH7760
378 bool "Support SH7760 processor"
381 config CPU_SUBTYPE_SH4_202
382 bool "Support SH4-202 processor"
385 # SH-4A Processor Support
387 config CPU_SUBTYPE_SH7723
388 bool "Support SH7723 processor"
392 select ARCH_SPARSEMEM_ENABLE
393 select SYS_SUPPORTS_SH_CMT
396 Select SH7723 if you have an SH-MobileR2 CPU.
398 config CPU_SUBTYPE_SH7724
399 bool "Support SH7724 processor"
403 select ARCH_SPARSEMEM_ENABLE
404 select SYS_SUPPORTS_SH_CMT
407 Select SH7724 if you have an SH-MobileR2R CPU.
409 config CPU_SUBTYPE_SH7734
410 bool "Support SH7734 processor"
415 Select SH7734 if you have a SH4A SH7734 CPU.
417 config CPU_SUBTYPE_SH7757
418 bool "Support SH7757 processor"
423 Select SH7757 if you have a SH4A SH7757 CPU.
425 config CPU_SUBTYPE_SH7763
426 bool "Support SH7763 processor"
428 select USB_OHCI_SH if USB_OHCI_HCD
430 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
432 config CPU_SUBTYPE_SH7770
433 bool "Support SH7770 processor"
436 config CPU_SUBTYPE_SH7780
437 bool "Support SH7780 processor"
440 config CPU_SUBTYPE_SH7785
441 bool "Support SH7785 processor"
444 select ARCH_SPARSEMEM_ENABLE
445 select SYS_SUPPORTS_NUMA
448 config CPU_SUBTYPE_SH7786
449 bool "Support SH7786 processor"
452 select CPU_HAS_PTEAEX
453 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
454 select USB_OHCI_SH if USB_OHCI_HCD
455 select USB_EHCI_SH if USB_EHCI_HCD
458 config CPU_SUBTYPE_SHX3
459 bool "Support SH-X3 processor"
462 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
466 # SH4AL-DSP Processor Support
468 config CPU_SUBTYPE_SH7343
469 bool "Support SH7343 processor"
472 select SYS_SUPPORTS_SH_CMT
474 config CPU_SUBTYPE_SH7722
475 bool "Support SH7722 processor"
479 select ARCH_SPARSEMEM_ENABLE
480 select SYS_SUPPORTS_NUMA
481 select SYS_SUPPORTS_SH_CMT
484 config CPU_SUBTYPE_SH7366
485 bool "Support SH7366 processor"
489 select ARCH_SPARSEMEM_ENABLE
490 select SYS_SUPPORTS_NUMA
491 select SYS_SUPPORTS_SH_CMT
495 source "arch/sh/mm/Kconfig"
497 source "arch/sh/Kconfig.cpu"
499 source "arch/sh/boards/Kconfig"
501 menu "Timer and clock configuration"
504 int "Peripheral clock frequency (in Hz)"
505 depends on SH_CLK_CPG_LEGACY
506 default "31250000" if CPU_SUBTYPE_SH7619
507 default "33333333" if CPU_SUBTYPE_SH7770 || \
508 CPU_SUBTYPE_SH7760 || \
509 CPU_SUBTYPE_SH7705 || \
510 CPU_SUBTYPE_SH7203 || \
511 CPU_SUBTYPE_SH7206 || \
512 CPU_SUBTYPE_SH7263 || \
514 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
515 default "66000000" if CPU_SUBTYPE_SH4_202
518 This option is used to specify the peripheral clock frequency.
519 This is necessary for determining the reference clock value on
520 platforms lacking an RTC.
525 config SH_CLK_CPG_LEGACY
526 depends on SH_CLK_CPG
527 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
528 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
529 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
534 menu "CPU Frequency scaling"
535 source "drivers/cpufreq/Kconfig"
538 source "arch/sh/drivers/Kconfig"
542 menu "Kernel features"
544 source "kernel/Kconfig.hz"
547 bool "kexec system call (EXPERIMENTAL)"
551 kexec is a system call that implements the ability to shutdown your
552 current kernel, and to start another kernel. It is like a reboot
553 but it is independent of the system firmware. And like a reboot
554 you can start any kernel with it, not just Linux.
556 The name comes from the similarity to the exec system call.
558 It is an ongoing process to be certain the hardware in a machine
559 is properly shutdown, so do not be surprised if this code does not
560 initially work for you. As of this writing the exact hardware
561 interface is strongly in flux, so no good recommendation can be
565 bool "kernel crash dumps (EXPERIMENTAL)"
566 depends on BROKEN_ON_SMP
568 Generate crash dump after being started by kexec.
569 This should be normally only set in special crash dump kernels
570 which are loaded in the main kernel with kexec-tools into
571 a specially reserved region and then later executed after
572 a crash by kdump/kexec. The crash dump kernel must be compiled
573 to a memory address not used by the main kernel using
576 For more details see Documentation/admin-guide/kdump/kdump.rst
579 bool "kexec jump (EXPERIMENTAL)"
580 depends on KEXEC && HIBERNATION
582 Jump between original kernel and kexeced kernel and invoke
585 config PHYSICAL_START
586 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
589 This gives the physical address where the kernel is loaded
590 and is ordinarily the same as MEMORY_START.
592 Different values are primarily used in the case of kexec on panic
593 where the fail safe kernel needs to run at a different address
594 than the panic-ed kernel.
597 bool "Symmetric multi-processing support"
598 depends on SYS_SUPPORTS_SMP
600 This enables support for systems with more than one CPU. If you have
601 a system with only one CPU, say N. If you have a system with more
604 If you say N here, the kernel will run on uni- and multiprocessor
605 machines, but will use only one CPU of a multiprocessor machine. If
606 you say Y here, the kernel will run on many, but not all,
607 uniprocessor machines. On a uniprocessor machine, the kernel
608 will run faster if you say N here.
610 People using multiprocessor machines who say Y here should also say
611 Y to "Enhanced Real Time Clock Support", below.
613 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
614 available at <https://www.tldp.org/docs.html#howto>.
616 If you don't know what to do here, say N.
619 int "Maximum number of CPUs (2-32)"
622 default "4" if CPU_SUBTYPE_SHX3
625 This allows you to specify the maximum number of CPUs which this
626 kernel will support. The maximum supported value is 32 and the
627 minimum value which makes sense is 2.
629 This is purely to save memory - each supported CPU adds
630 approximately eight kilobytes to the kernel image.
633 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
636 Say Y here to experiment with turning CPUs off and on. CPUs
637 can be controlled through /sys/devices/system/cpu.
643 This enables support for gUSA (general UserSpace Atomicity).
644 This is the default implementation for both UP and non-ll/sc
645 CPUs, and is used by the libc, amongst others.
647 For additional information, design information can be found
648 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
650 This should only be disabled for special cases where alternate
651 atomicity implementations exist.
654 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
655 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
657 Enabling this option will allow the kernel to implement some
658 atomic operations using a software implementation of load-locked/
659 store-conditional (LLSC). On machines which do not have hardware
660 LLSC, this should be more efficient than the other alternative of
661 disabling interrupts around the atomic sequence.
663 config HW_PERF_EVENTS
664 bool "Enable hardware performance counter support for perf events"
665 depends on PERF_EVENTS && CPU_HAS_PMU
668 Enable hardware performance counter support for perf events. If
669 disabled, perf events will use software events only.
671 source "drivers/sh/Kconfig"
677 config USE_BUILTIN_DTB
678 bool "Use builtin DTB"
680 depends on SH_DEVICE_TREE
682 Link a device tree blob for particular hardware into the kernel,
683 suppressing use of the DTB pointer provided by the bootloader.
684 This option should only be used with legacy bootloaders that are
685 not capable of providing a DTB to the kernel, or for experimental
686 hardware without stable device tree bindings.
688 config BUILTIN_DTB_SOURCE
689 string "Source file for builtin DTB"
691 depends on USE_BUILTIN_DTB
693 Base name (without suffix, relative to arch/sh/boot/dts) for the
694 a DTS file that will be used to produce the DTB linked into the
697 config ZERO_PAGE_OFFSET
699 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
700 SH_7751_SOLUTION_ENGINE
701 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
702 default "0x00002000" if PAGE_SIZE_8KB
705 This sets the default offset of zero page.
707 config BOOT_LINK_OFFSET
709 default "0x00210000" if SH_SHMIN
710 default "0x00810000" if SH_7780_SOLUTION_ENGINE
711 default "0x009e0000" if SH_TITAN
712 default "0x01800000" if SH_SDK7780
713 default "0x02000000" if SH_EDOSK7760
716 This option allows you to set the link address offset of the zImage.
717 This can be useful if you are on a board which has a small amount of
722 default "0x00001000" if PAGE_SIZE_4KB
723 default "0x00002000" if PAGE_SIZE_8KB
724 default "0x00004000" if PAGE_SIZE_16KB
725 default "0x00010000" if PAGE_SIZE_64KB
728 config ROMIMAGE_MMCIF
729 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
730 depends on CPU_SUBTYPE_SH7724
732 Say Y here to include experimental MMCIF loading code in
733 romImage. With this enabled it is possible to write the romImage
734 kernel image to an MMC card and boot the kernel straight from
735 the reset vector. At reset the processor Mask ROM will load the
736 first part of the romImage which in turn loads the rest the kernel
737 image to RAM using the MMCIF hardware block.
740 prompt "Kernel command line"
742 default CMDLINE_OVERWRITE
744 Setting this option allows the kernel command line arguments
747 config CMDLINE_OVERWRITE
748 bool "Overwrite bootloader kernel arguments"
750 Given string will overwrite any arguments passed in by
753 config CMDLINE_EXTEND
754 bool "Extend bootloader kernel arguments"
756 Given string will be concatenated with arguments passed in
762 string "Kernel command line arguments string"
763 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
764 default "console=ttySC1,115200"
771 tristate "SuperHyway Bus support"
772 depends on CPU_SUBTYPE_SH4_202
775 bool "Maple Bus support"
776 depends on SH_DREAMCAST
778 The Maple Bus is SEGA's serial communication bus for peripherals
779 on the Dreamcast. Without this bus support you won't be able to
780 get your Dreamcast keyboard etc to work, so most users
781 probably want to say 'Y' here, unless you are only using the
782 Dreamcast with a serial line terminal or a remote network
787 menu "Power management options (EXPERIMENTAL)"
789 source "kernel/power/Kconfig"
791 source "drivers/cpuidle/Kconfig"