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_GIGANTIC_PAGE
11 select ARCH_HAS_GCOV_PROFILE_ALL
12 select ARCH_HAS_PTE_SPECIAL
13 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
14 select ARCH_HIBERNATION_POSSIBLE if MMU
15 select ARCH_MIGHT_HAVE_PC_PARPORT
16 select ARCH_WANT_IPC_PARSE_VERSION
17 select CPU_NO_EFFICIENT_FFS
18 select DMA_DECLARE_COHERENT
19 select GENERIC_ATOMIC64
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_SMP_IDLE_THREAD
26 select GUP_GET_PTE_LOW_HIGH if X2TLB
27 select HAVE_ARCH_AUDITSYSCALL
29 select HAVE_ARCH_SECCOMP_FILTER
30 select HAVE_ARCH_TRACEHOOK
31 select HAVE_DEBUG_BUGVERBOSE
32 select HAVE_DEBUG_KMEMLEAK
33 select HAVE_DYNAMIC_FTRACE
34 select HAVE_FAST_GUP if MMU
35 select HAVE_FUNCTION_GRAPH_TRACER
36 select HAVE_FUNCTION_TRACER
37 select HAVE_FUTEX_CMPXCHG if FUTEX
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 MAY_HAVE_SPARSE_IRQ
60 select MODULES_USE_ELF_RELA
61 select NEED_SG_DMA_LENGTH
62 select NO_DMA if !MMU && !DMA_COHERENT
63 select NO_GENERIC_PCI_IOPORT_MAP if PCI
66 select PCI_DOMAINS if PCI
68 select PERF_USE_VMALLOC
72 select TRACE_IRQFLAGS_SUPPORT
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_SMP
106 config SYS_SUPPORTS_NUMA
109 config STACKTRACE_SUPPORT
112 config LOCKDEP_SUPPORT
115 config ARCH_HAS_ILOG2_U32
118 config ARCH_HAS_ILOG2_U64
123 depends on !SH_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
135 config DMA_NONCOHERENT
136 def_bool !NO_DMA && !DMA_COHERENT
137 select ARCH_HAS_DMA_PREP_COHERENT
138 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
139 select DMA_DIRECT_REMAP
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 ARCH_SUPPORTS_HUGETLBFS if MMU
175 select CPU_HAS_INTEVT
177 select CPU_HAS_FPU if !CPU_SH4AL_DSP
179 select SYS_SUPPORTS_SH_TMU
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 "Symmetric multi-processing support"
600 depends on SYS_SUPPORTS_SMP
602 This enables support for systems with more than one CPU. If you have
603 a system with only one CPU, say N. If you have a system with more
606 If you say N here, the kernel will run on uni- and multiprocessor
607 machines, but will use only one CPU of a multiprocessor machine. If
608 you say Y here, the kernel will run on many, but not all,
609 uniprocessor machines. On a uniprocessor machine, the kernel
610 will run faster if you say N here.
612 People using multiprocessor machines who say Y here should also say
613 Y to "Enhanced Real Time Clock Support", below.
615 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
616 available at <https://www.tldp.org/docs.html#howto>.
618 If you don't know what to do here, say N.
621 int "Maximum number of CPUs (2-32)"
624 default "4" if CPU_SUBTYPE_SHX3
627 This allows you to specify the maximum number of CPUs which this
628 kernel will support. The maximum supported value is 32 and the
629 minimum value which makes sense is 2.
631 This is purely to save memory - each supported CPU adds
632 approximately eight kilobytes to the kernel image.
635 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
638 Say Y here to experiment with turning CPUs off and on. CPUs
639 can be controlled through /sys/devices/system/cpu.
645 This enables support for gUSA (general UserSpace Atomicity).
646 This is the default implementation for both UP and non-ll/sc
647 CPUs, and is used by the libc, amongst others.
649 For additional information, design information can be found
650 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
652 This should only be disabled for special cases where alternate
653 atomicity implementations exist.
656 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
657 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
659 Enabling this option will allow the kernel to implement some
660 atomic operations using a software implementation of load-locked/
661 store-conditional (LLSC). On machines which do not have hardware
662 LLSC, this should be more efficient than the other alternative of
663 disabling interrupts around the atomic sequence.
665 config HW_PERF_EVENTS
666 bool "Enable hardware performance counter support for perf events"
667 depends on PERF_EVENTS && CPU_HAS_PMU
670 Enable hardware performance counter support for perf events. If
671 disabled, perf events will use software events only.
673 source "drivers/sh/Kconfig"
679 config USE_BUILTIN_DTB
680 bool "Use builtin DTB"
682 depends on SH_DEVICE_TREE
684 Link a device tree blob for particular hardware into the kernel,
685 suppressing use of the DTB pointer provided by the bootloader.
686 This option should only be used with legacy bootloaders that are
687 not capable of providing a DTB to the kernel, or for experimental
688 hardware without stable device tree bindings.
690 config BUILTIN_DTB_SOURCE
691 string "Source file for builtin DTB"
693 depends on USE_BUILTIN_DTB
695 Base name (without suffix, relative to arch/sh/boot/dts) for the
696 a DTS file that will be used to produce the DTB linked into the
699 config ZERO_PAGE_OFFSET
701 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
702 SH_7751_SOLUTION_ENGINE
703 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
704 default "0x00002000" if PAGE_SIZE_8KB
707 This sets the default offset of zero page.
709 config BOOT_LINK_OFFSET
711 default "0x00210000" if SH_SHMIN
712 default "0x00810000" if SH_7780_SOLUTION_ENGINE
713 default "0x009e0000" if SH_TITAN
714 default "0x01800000" if SH_SDK7780
715 default "0x02000000" if SH_EDOSK7760
718 This option allows you to set the link address offset of the zImage.
719 This can be useful if you are on a board which has a small amount of
724 default "0x00001000" if PAGE_SIZE_4KB
725 default "0x00002000" if PAGE_SIZE_8KB
726 default "0x00004000" if PAGE_SIZE_16KB
727 default "0x00010000" if PAGE_SIZE_64KB
730 config ROMIMAGE_MMCIF
731 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
732 depends on CPU_SUBTYPE_SH7724
734 Say Y here to include experimental MMCIF loading code in
735 romImage. With this enabled it is possible to write the romImage
736 kernel image to an MMC card and boot the kernel straight from
737 the reset vector. At reset the processor Mask ROM will load the
738 first part of the romImage which in turn loads the rest the kernel
739 image to RAM using the MMCIF hardware block.
742 prompt "Kernel command line"
744 default CMDLINE_OVERWRITE
746 Setting this option allows the kernel command line arguments
749 config CMDLINE_OVERWRITE
750 bool "Overwrite bootloader kernel arguments"
752 Given string will overwrite any arguments passed in by
755 config CMDLINE_EXTEND
756 bool "Extend bootloader kernel arguments"
758 Given string will be concatenated with arguments passed in
764 string "Kernel command line arguments string"
765 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
766 default "console=ttySC1,115200"
773 tristate "SuperHyway Bus support"
774 depends on CPU_SUBTYPE_SH4_202
777 bool "Maple Bus support"
778 depends on SH_DREAMCAST
780 The Maple Bus is SEGA's serial communication bus for peripherals
781 on the Dreamcast. Without this bus support you won't be able to
782 get your Dreamcast keyboard etc to work, so most users
783 probably want to say 'Y' here, unless you are only using the
784 Dreamcast with a serial line terminal or a remote network
789 menu "Power management options (EXPERIMENTAL)"
791 source "kernel/power/Kconfig"
793 source "drivers/cpuidle/Kconfig"