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
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_STRNCPY_FROM_USER
27 select GENERIC_STRNLEN_USER
28 select GENERIC_SMP_IDLE_THREAD
29 select GUP_GET_PTE_LOW_HIGH if X2TLB
30 select HAVE_ARCH_AUDITSYSCALL
32 select HAVE_ARCH_SECCOMP_FILTER
33 select HAVE_ARCH_TRACEHOOK
34 select HAVE_DEBUG_BUGVERBOSE
35 select HAVE_DEBUG_KMEMLEAK
36 select HAVE_DYNAMIC_FTRACE
37 select HAVE_FAST_GUP if MMU
38 select HAVE_FUNCTION_GRAPH_TRACER
39 select HAVE_FUNCTION_TRACER
40 select HAVE_FUTEX_CMPXCHG if FUTEX
41 select HAVE_FTRACE_MCOUNT_RECORD
42 select HAVE_HW_BREAKPOINT
43 select HAVE_IDE if HAS_IOPORT_MAP
44 select HAVE_IOREMAP_PROT if MMU && !X2TLB
45 select HAVE_KERNEL_BZIP2
46 select HAVE_KERNEL_GZIP
47 select HAVE_KERNEL_LZMA
48 select HAVE_KERNEL_LZO
51 select HAVE_KRETPROBES
52 select HAVE_MIXED_BREAKPOINTS_REGS
53 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
55 select HAVE_PATA_PLATFORM
56 select HAVE_PERF_EVENTS
57 select HAVE_REGS_AND_STACK_ACCESS_API
59 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
60 select HAVE_STACKPROTECTOR
61 select HAVE_SYSCALL_TRACEPOINTS
62 select IRQ_FORCED_THREADING
63 select MAY_HAVE_SPARSE_IRQ
64 select MODULES_USE_ELF_RELA
65 select NEED_SG_DMA_LENGTH
66 select NO_DMA if !MMU && !DMA_COHERENT
67 select NO_GENERIC_PCI_IOPORT_MAP if PCI
70 select PCI_DOMAINS if PCI
72 select PERF_USE_VMALLOC
77 The SuperH is a RISC processor targeted for use in embedded systems
78 and consumer electronics; it was also used in the Sega Dreamcast
79 gaming console. The SuperH port has a home page at
80 <http://www.linux-sh.org/>.
86 config GENERIC_HWEIGHT
89 config GENERIC_CALIBRATE_DELAY
92 config GENERIC_LOCKBREAK
94 depends on SMP && PREEMPTION
96 config ARCH_SUSPEND_POSSIBLE
99 config ARCH_HIBERNATION_POSSIBLE
102 config SYS_SUPPORTS_APM_EMULATION
104 select ARCH_SUSPEND_POSSIBLE
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_SH4202_MICRODEV && !SH_SHMIN && !SH_HP6XX && \
138 config DMA_NONCOHERENT
139 def_bool !NO_DMA && !DMA_COHERENT
140 select ARCH_HAS_DMA_PREP_COHERENT
141 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
142 select DMA_DIRECT_REMAP
144 config PGTABLE_LEVELS
160 select UNCACHED_MAPPING
166 select OF_EARLY_FLATTREE
170 select CPU_HAS_INTEVT
173 select SYS_SUPPORTS_SH_TMU
177 select ARCH_SUPPORTS_HUGETLBFS if MMU
178 select CPU_HAS_INTEVT
180 select CPU_HAS_FPU if !CPU_SH4AL_DSP
182 select SYS_SUPPORTS_SH_TMU
199 select SYS_SUPPORTS_SMP
200 select SYS_SUPPORTS_NUMA
204 select ARCH_SUSPEND_POSSIBLE
208 depends on CPU_SH4 || CPU_SH4A
213 prompt "Processor sub-type selection"
219 # SH-2 Processor Support
221 config CPU_SUBTYPE_SH7619
222 bool "Support SH7619 processor"
224 select SYS_SUPPORTS_SH_CMT
226 config CPU_SUBTYPE_J2
227 bool "Support J2 processor"
229 select SYS_SUPPORTS_SMP
230 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
232 # SH-2A Processor Support
234 config CPU_SUBTYPE_SH7201
235 bool "Support SH7201 processor"
238 select SYS_SUPPORTS_SH_MTU2
240 config CPU_SUBTYPE_SH7203
241 bool "Support SH7203 processor"
244 select SYS_SUPPORTS_SH_CMT
245 select SYS_SUPPORTS_SH_MTU2
248 config CPU_SUBTYPE_SH7206
249 bool "Support SH7206 processor"
251 select SYS_SUPPORTS_SH_CMT
252 select SYS_SUPPORTS_SH_MTU2
254 config CPU_SUBTYPE_SH7263
255 bool "Support SH7263 processor"
258 select SYS_SUPPORTS_SH_CMT
259 select SYS_SUPPORTS_SH_MTU2
261 config CPU_SUBTYPE_SH7264
262 bool "Support SH7264 processor"
265 select SYS_SUPPORTS_SH_CMT
266 select SYS_SUPPORTS_SH_MTU2
269 config CPU_SUBTYPE_SH7269
270 bool "Support SH7269 processor"
273 select SYS_SUPPORTS_SH_CMT
274 select SYS_SUPPORTS_SH_MTU2
277 config CPU_SUBTYPE_MXG
278 bool "Support MX-G processor"
280 select SYS_SUPPORTS_SH_MTU2
282 Select MX-G if running on an R8A03022BG part.
284 # SH-3 Processor Support
286 config CPU_SUBTYPE_SH7705
287 bool "Support SH7705 processor"
290 config CPU_SUBTYPE_SH7706
291 bool "Support SH7706 processor"
294 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
296 config CPU_SUBTYPE_SH7707
297 bool "Support SH7707 processor"
300 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
302 config CPU_SUBTYPE_SH7708
303 bool "Support SH7708 processor"
306 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
307 if you have a 100 Mhz SH-3 HD6417708R CPU.
309 config CPU_SUBTYPE_SH7709
310 bool "Support SH7709 processor"
313 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
315 config CPU_SUBTYPE_SH7710
316 bool "Support SH7710 processor"
320 Select SH7710 if you have a SH3-DSP SH7710 CPU.
322 config CPU_SUBTYPE_SH7712
323 bool "Support SH7712 processor"
327 Select SH7712 if you have a SH3-DSP SH7712 CPU.
329 config CPU_SUBTYPE_SH7720
330 bool "Support SH7720 processor"
333 select SYS_SUPPORTS_SH_CMT
334 select USB_OHCI_SH if USB_OHCI_HCD
337 Select SH7720 if you have a SH3-DSP SH7720 CPU.
339 config CPU_SUBTYPE_SH7721
340 bool "Support SH7721 processor"
343 select SYS_SUPPORTS_SH_CMT
344 select USB_OHCI_SH if USB_OHCI_HCD
346 Select SH7721 if you have a SH3-DSP SH7721 CPU.
348 # SH-4 Processor Support
350 config CPU_SUBTYPE_SH7750
351 bool "Support SH7750 processor"
354 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
356 config CPU_SUBTYPE_SH7091
357 bool "Support SH7091 processor"
360 Select SH7091 if you have an SH-4 based Sega device (such as
361 the Dreamcast, Naomi, and Naomi 2).
363 config CPU_SUBTYPE_SH7750R
364 bool "Support SH7750R processor"
367 config CPU_SUBTYPE_SH7750S
368 bool "Support SH7750S processor"
371 config CPU_SUBTYPE_SH7751
372 bool "Support SH7751 processor"
375 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
376 or if you have a HD6417751R CPU.
378 config CPU_SUBTYPE_SH7751R
379 bool "Support SH7751R processor"
382 config CPU_SUBTYPE_SH7760
383 bool "Support SH7760 processor"
386 config CPU_SUBTYPE_SH4_202
387 bool "Support SH4-202 processor"
390 # SH-4A Processor Support
392 config CPU_SUBTYPE_SH7723
393 bool "Support SH7723 processor"
397 select ARCH_SPARSEMEM_ENABLE
398 select SYS_SUPPORTS_SH_CMT
401 Select SH7723 if you have an SH-MobileR2 CPU.
403 config CPU_SUBTYPE_SH7724
404 bool "Support SH7724 processor"
408 select ARCH_SPARSEMEM_ENABLE
409 select SYS_SUPPORTS_SH_CMT
412 Select SH7724 if you have an SH-MobileR2R CPU.
414 config CPU_SUBTYPE_SH7734
415 bool "Support SH7734 processor"
420 Select SH7734 if you have a SH4A SH7734 CPU.
422 config CPU_SUBTYPE_SH7757
423 bool "Support SH7757 processor"
428 Select SH7757 if you have a SH4A SH7757 CPU.
430 config CPU_SUBTYPE_SH7763
431 bool "Support SH7763 processor"
433 select USB_OHCI_SH if USB_OHCI_HCD
435 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
437 config CPU_SUBTYPE_SH7770
438 bool "Support SH7770 processor"
441 config CPU_SUBTYPE_SH7780
442 bool "Support SH7780 processor"
445 config CPU_SUBTYPE_SH7785
446 bool "Support SH7785 processor"
449 select ARCH_SPARSEMEM_ENABLE
450 select SYS_SUPPORTS_NUMA
453 config CPU_SUBTYPE_SH7786
454 bool "Support SH7786 processor"
457 select CPU_HAS_PTEAEX
458 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
459 select USB_OHCI_SH if USB_OHCI_HCD
460 select USB_EHCI_SH if USB_EHCI_HCD
463 config CPU_SUBTYPE_SHX3
464 bool "Support SH-X3 processor"
467 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
471 # SH4AL-DSP Processor Support
473 config CPU_SUBTYPE_SH7343
474 bool "Support SH7343 processor"
477 select SYS_SUPPORTS_SH_CMT
479 config CPU_SUBTYPE_SH7722
480 bool "Support SH7722 processor"
484 select ARCH_SPARSEMEM_ENABLE
485 select SYS_SUPPORTS_NUMA
486 select SYS_SUPPORTS_SH_CMT
489 config CPU_SUBTYPE_SH7366
490 bool "Support SH7366 processor"
494 select ARCH_SPARSEMEM_ENABLE
495 select SYS_SUPPORTS_NUMA
496 select SYS_SUPPORTS_SH_CMT
500 source "arch/sh/mm/Kconfig"
502 source "arch/sh/Kconfig.cpu"
504 source "arch/sh/boards/Kconfig"
506 menu "Timer and clock configuration"
509 int "Peripheral clock frequency (in Hz)"
510 depends on SH_CLK_CPG_LEGACY
511 default "31250000" if CPU_SUBTYPE_SH7619
512 default "33333333" if CPU_SUBTYPE_SH7770 || \
513 CPU_SUBTYPE_SH7760 || \
514 CPU_SUBTYPE_SH7705 || \
515 CPU_SUBTYPE_SH7203 || \
516 CPU_SUBTYPE_SH7206 || \
517 CPU_SUBTYPE_SH7263 || \
519 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
520 default "66000000" if CPU_SUBTYPE_SH4_202
523 This option is used to specify the peripheral clock frequency.
524 This is necessary for determining the reference clock value on
525 platforms lacking an RTC.
530 config SH_CLK_CPG_LEGACY
531 depends on SH_CLK_CPG
532 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
533 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
534 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
539 menu "CPU Frequency scaling"
540 source "drivers/cpufreq/Kconfig"
543 source "arch/sh/drivers/Kconfig"
547 menu "Kernel features"
549 source "kernel/Kconfig.hz"
552 bool "kexec system call (EXPERIMENTAL)"
556 kexec is a system call that implements the ability to shutdown your
557 current kernel, and to start another kernel. It is like a reboot
558 but it is independent of the system firmware. And like a reboot
559 you can start any kernel with it, not just Linux.
561 The name comes from the similarity to the exec system call.
563 It is an ongoing process to be certain the hardware in a machine
564 is properly shutdown, so do not be surprised if this code does not
565 initially work for you. As of this writing the exact hardware
566 interface is strongly in flux, so no good recommendation can be
570 bool "kernel crash dumps (EXPERIMENTAL)"
571 depends on BROKEN_ON_SMP
573 Generate crash dump after being started by kexec.
574 This should be normally only set in special crash dump kernels
575 which are loaded in the main kernel with kexec-tools into
576 a specially reserved region and then later executed after
577 a crash by kdump/kexec. The crash dump kernel must be compiled
578 to a memory address not used by the main kernel using
581 For more details see Documentation/admin-guide/kdump/kdump.rst
584 bool "kexec jump (EXPERIMENTAL)"
585 depends on KEXEC && HIBERNATION
587 Jump between original kernel and kexeced kernel and invoke
590 config PHYSICAL_START
591 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
594 This gives the physical address where the kernel is loaded
595 and is ordinarily the same as MEMORY_START.
597 Different values are primarily used in the case of kexec on panic
598 where the fail safe kernel needs to run at a different address
599 than the panic-ed kernel.
602 bool "Symmetric multi-processing support"
603 depends on SYS_SUPPORTS_SMP
605 This enables support for systems with more than one CPU. If you have
606 a system with only one CPU, say N. If you have a system with more
609 If you say N here, the kernel will run on uni- and multiprocessor
610 machines, but will use only one CPU of a multiprocessor machine. If
611 you say Y here, the kernel will run on many, but not all,
612 uniprocessor machines. On a uniprocessor machine, the kernel
613 will run faster if you say N here.
615 People using multiprocessor machines who say Y here should also say
616 Y to "Enhanced Real Time Clock Support", below.
618 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
619 available at <https://www.tldp.org/docs.html#howto>.
621 If you don't know what to do here, say N.
624 int "Maximum number of CPUs (2-32)"
627 default "4" if CPU_SUBTYPE_SHX3
630 This allows you to specify the maximum number of CPUs which this
631 kernel will support. The maximum supported value is 32 and the
632 minimum value which makes sense is 2.
634 This is purely to save memory - each supported CPU adds
635 approximately eight kilobytes to the kernel image.
638 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
641 Say Y here to experiment with turning CPUs off and on. CPUs
642 can be controlled through /sys/devices/system/cpu.
648 This enables support for gUSA (general UserSpace Atomicity).
649 This is the default implementation for both UP and non-ll/sc
650 CPUs, and is used by the libc, amongst others.
652 For additional information, design information can be found
653 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
655 This should only be disabled for special cases where alternate
656 atomicity implementations exist.
659 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
660 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
662 Enabling this option will allow the kernel to implement some
663 atomic operations using a software implementation of load-locked/
664 store-conditional (LLSC). On machines which do not have hardware
665 LLSC, this should be more efficient than the other alternative of
666 disabling interrupts around the atomic sequence.
668 config HW_PERF_EVENTS
669 bool "Enable hardware performance counter support for perf events"
670 depends on PERF_EVENTS && CPU_HAS_PMU
673 Enable hardware performance counter support for perf events. If
674 disabled, perf events will use software events only.
676 source "drivers/sh/Kconfig"
682 config USE_BUILTIN_DTB
683 bool "Use builtin DTB"
685 depends on SH_DEVICE_TREE
687 Link a device tree blob for particular hardware into the kernel,
688 suppressing use of the DTB pointer provided by the bootloader.
689 This option should only be used with legacy bootloaders that are
690 not capable of providing a DTB to the kernel, or for experimental
691 hardware without stable device tree bindings.
693 config BUILTIN_DTB_SOURCE
694 string "Source file for builtin DTB"
696 depends on USE_BUILTIN_DTB
698 Base name (without suffix, relative to arch/sh/boot/dts) for the
699 a DTS file that will be used to produce the DTB linked into the
702 config ZERO_PAGE_OFFSET
704 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
705 SH_7751_SOLUTION_ENGINE
706 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
707 default "0x00002000" if PAGE_SIZE_8KB
710 This sets the default offset of zero page.
712 config BOOT_LINK_OFFSET
714 default "0x00210000" if SH_SHMIN
715 default "0x00810000" if SH_7780_SOLUTION_ENGINE
716 default "0x009e0000" if SH_TITAN
717 default "0x01800000" if SH_SDK7780
718 default "0x02000000" if SH_EDOSK7760
721 This option allows you to set the link address offset of the zImage.
722 This can be useful if you are on a board which has a small amount of
727 default "0x00001000" if PAGE_SIZE_4KB
728 default "0x00002000" if PAGE_SIZE_8KB
729 default "0x00004000" if PAGE_SIZE_16KB
730 default "0x00010000" if PAGE_SIZE_64KB
733 config ROMIMAGE_MMCIF
734 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
735 depends on CPU_SUBTYPE_SH7724
737 Say Y here to include experimental MMCIF loading code in
738 romImage. With this enabled it is possible to write the romImage
739 kernel image to an MMC card and boot the kernel straight from
740 the reset vector. At reset the processor Mask ROM will load the
741 first part of the romImage which in turn loads the rest the kernel
742 image to RAM using the MMCIF hardware block.
745 prompt "Kernel command line"
747 default CMDLINE_OVERWRITE
749 Setting this option allows the kernel command line arguments
752 config CMDLINE_OVERWRITE
753 bool "Overwrite bootloader kernel arguments"
755 Given string will overwrite any arguments passed in by
758 config CMDLINE_EXTEND
759 bool "Extend bootloader kernel arguments"
761 Given string will be concatenated with arguments passed in
767 string "Kernel command line arguments string"
768 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
769 default "console=ttySC1,115200"
776 tristate "SuperHyway Bus support"
777 depends on CPU_SUBTYPE_SH4_202
780 bool "Maple Bus support"
781 depends on SH_DREAMCAST
783 The Maple Bus is SEGA's serial communication bus for peripherals
784 on the Dreamcast. Without this bus support you won't be able to
785 get your Dreamcast keyboard etc to work, so most users
786 probably want to say 'Y' here, unless you are only using the
787 Dreamcast with a serial line terminal or a remote network
792 menu "Power management options (EXPERIMENTAL)"
794 source "kernel/power/Kconfig"
796 source "drivers/cpuidle/Kconfig"