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 ARCH_NO_COHERENT_DMA_MMAP if !MMU
9 select HAVE_PATA_PLATFORM
11 select DMA_DECLARE_COHERENT
12 select HAVE_IDE if HAS_IOPORT_MAP
13 select HAVE_MEMBLOCK_NODE_MAP
15 select HAVE_ARCH_TRACEHOOK
16 select HAVE_PERF_EVENTS
17 select HAVE_DEBUG_BUGVERBOSE
18 select ARCH_HAVE_CUSTOM_GPIO_H
19 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
20 select ARCH_HAS_GCOV_PROFILE_ALL
21 select PERF_USE_VMALLOC
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_KERNEL_GZIP
24 select CPU_NO_EFFICIENT_FFS
25 select HAVE_KERNEL_BZIP2
26 select HAVE_KERNEL_LZMA
28 select HAVE_KERNEL_LZO
30 select ARCH_WANT_IPC_PARSE_VERSION
31 select HAVE_SYSCALL_TRACEPOINTS
32 select HAVE_REGS_AND_STACK_ACCESS_API
33 select MAY_HAVE_SPARSE_IRQ
34 select IRQ_FORCED_THREADING
36 select GENERIC_ATOMIC64
37 select GENERIC_IRQ_SHOW
38 select GENERIC_SMP_IDLE_THREAD
39 select GENERIC_IDLE_POLL_SETUP
40 select GENERIC_CLOCKEVENTS
41 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
42 select GENERIC_PCI_IOMAP if PCI
43 select GENERIC_SCHED_CLOCK
44 select GENERIC_STRNCPY_FROM_USER
45 select GENERIC_STRNLEN_USER
46 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
47 select MODULES_USE_ELF_RELA
48 select NO_GENERIC_PCI_IOPORT_MAP if PCI
51 select PCI_DOMAINS if PCI
52 select HAVE_ARCH_AUDITSYSCALL
53 select HAVE_FUTEX_CMPXCHG if FUTEX
55 select NEED_SG_DMA_LENGTH
56 select ARCH_HAS_GIGANTIC_PAGE
59 The SuperH is a RISC processor targeted for use in embedded systems
60 and consumer electronics; it was also used in the Sega Dreamcast
61 gaming console. The SuperH port has a home page at
62 <http://www.linux-sh.org/>.
65 def_bool "$(ARCH)" = "sh"
66 select ARCH_32BIT_OFF_T
68 select HAVE_KRETPROBES
69 select HAVE_IOREMAP_PROT if MMU && !X2TLB
70 select HAVE_FUNCTION_TRACER
71 select HAVE_FTRACE_MCOUNT_RECORD
72 select HAVE_DYNAMIC_FTRACE
73 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
74 select ARCH_WANT_IPC_PARSE_VERSION
75 select HAVE_FUNCTION_GRAPH_TRACER
77 select HAVE_HW_BREAKPOINT
78 select HAVE_MIXED_BREAKPOINTS_REGS
80 select ARCH_HIBERNATION_POSSIBLE if MMU
82 select HAVE_STACKPROTECTOR
85 def_bool "$(ARCH)" = "sh64"
86 select HAVE_EXIT_THREAD
91 default "arch/sh/configs/shx3_defconfig" if SUPERH32
92 default "arch/sh/configs/cayman_defconfig" if SUPERH64
96 depends on BUG && SUPERH32
102 config GENERIC_HWEIGHT
105 config GENERIC_CALIBRATE_DELAY
108 config GENERIC_LOCKBREAK
110 depends on SMP && PREEMPT
112 config ARCH_SUSPEND_POSSIBLE
115 config ARCH_HIBERNATION_POSSIBLE
118 config SYS_SUPPORTS_APM_EMULATION
120 select ARCH_SUSPEND_POSSIBLE
122 config SYS_SUPPORTS_HUGETLBFS
125 config SYS_SUPPORTS_SMP
128 config SYS_SUPPORTS_NUMA
131 config STACKTRACE_SUPPORT
134 config LOCKDEP_SUPPORT
137 config ARCH_HAS_ILOG2_U32
140 config ARCH_HAS_ILOG2_U64
145 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
146 !SH_HP6XX && !SH_SOLUTION_ENGINE
157 config DMA_NONCOHERENT
158 def_bool !DMA_COHERENT
159 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
161 config PGTABLE_LEVELS
177 select UNCACHED_MAPPING
183 select OF_EARLY_FLATTREE
187 select CPU_HAS_INTEVT
190 select SYS_SUPPORTS_SH_TMU
194 select CPU_HAS_INTEVT
196 select CPU_HAS_FPU if !CPU_SH4AL_DSP
198 select SYS_SUPPORTS_SH_TMU
199 select SYS_SUPPORTS_HUGETLBFS if MMU
213 select SYS_SUPPORTS_SH_TMU
214 select SYS_SUPPORTS_HUGETLBFS if MMU
222 select SYS_SUPPORTS_SMP
223 select SYS_SUPPORTS_NUMA
227 select ARCH_SUSPEND_POSSIBLE
231 depends on CPU_SH4 || CPU_SH4A
238 prompt "Processor sub-type selection"
244 # SH-2 Processor Support
246 config CPU_SUBTYPE_SH7619
247 bool "Support SH7619 processor"
249 select SYS_SUPPORTS_SH_CMT
251 config CPU_SUBTYPE_J2
252 bool "Support J2 processor"
254 select SYS_SUPPORTS_SMP
255 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
257 # SH-2A Processor Support
259 config CPU_SUBTYPE_SH7201
260 bool "Support SH7201 processor"
263 select SYS_SUPPORTS_SH_MTU2
265 config CPU_SUBTYPE_SH7203
266 bool "Support SH7203 processor"
269 select SYS_SUPPORTS_SH_CMT
270 select SYS_SUPPORTS_SH_MTU2
273 config CPU_SUBTYPE_SH7206
274 bool "Support SH7206 processor"
276 select SYS_SUPPORTS_SH_CMT
277 select SYS_SUPPORTS_SH_MTU2
279 config CPU_SUBTYPE_SH7263
280 bool "Support SH7263 processor"
283 select SYS_SUPPORTS_SH_CMT
284 select SYS_SUPPORTS_SH_MTU2
286 config CPU_SUBTYPE_SH7264
287 bool "Support SH7264 processor"
290 select SYS_SUPPORTS_SH_CMT
291 select SYS_SUPPORTS_SH_MTU2
294 config CPU_SUBTYPE_SH7269
295 bool "Support SH7269 processor"
298 select SYS_SUPPORTS_SH_CMT
299 select SYS_SUPPORTS_SH_MTU2
302 config CPU_SUBTYPE_MXG
303 bool "Support MX-G processor"
305 select SYS_SUPPORTS_SH_MTU2
307 Select MX-G if running on an R8A03022BG part.
309 # SH-3 Processor Support
311 config CPU_SUBTYPE_SH7705
312 bool "Support SH7705 processor"
315 config CPU_SUBTYPE_SH7706
316 bool "Support SH7706 processor"
319 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
321 config CPU_SUBTYPE_SH7707
322 bool "Support SH7707 processor"
325 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
327 config CPU_SUBTYPE_SH7708
328 bool "Support SH7708 processor"
331 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
332 if you have a 100 Mhz SH-3 HD6417708R CPU.
334 config CPU_SUBTYPE_SH7709
335 bool "Support SH7709 processor"
338 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
340 config CPU_SUBTYPE_SH7710
341 bool "Support SH7710 processor"
345 Select SH7710 if you have a SH3-DSP SH7710 CPU.
347 config CPU_SUBTYPE_SH7712
348 bool "Support SH7712 processor"
352 Select SH7712 if you have a SH3-DSP SH7712 CPU.
354 config CPU_SUBTYPE_SH7720
355 bool "Support SH7720 processor"
358 select SYS_SUPPORTS_SH_CMT
359 select USB_OHCI_SH if USB_OHCI_HCD
362 Select SH7720 if you have a SH3-DSP SH7720 CPU.
364 config CPU_SUBTYPE_SH7721
365 bool "Support SH7721 processor"
368 select SYS_SUPPORTS_SH_CMT
369 select USB_OHCI_SH if USB_OHCI_HCD
371 Select SH7721 if you have a SH3-DSP SH7721 CPU.
373 # SH-4 Processor Support
375 config CPU_SUBTYPE_SH7750
376 bool "Support SH7750 processor"
379 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
381 config CPU_SUBTYPE_SH7091
382 bool "Support SH7091 processor"
385 Select SH7091 if you have an SH-4 based Sega device (such as
386 the Dreamcast, Naomi, and Naomi 2).
388 config CPU_SUBTYPE_SH7750R
389 bool "Support SH7750R processor"
392 config CPU_SUBTYPE_SH7750S
393 bool "Support SH7750S processor"
396 config CPU_SUBTYPE_SH7751
397 bool "Support SH7751 processor"
400 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
401 or if you have a HD6417751R CPU.
403 config CPU_SUBTYPE_SH7751R
404 bool "Support SH7751R processor"
407 config CPU_SUBTYPE_SH7760
408 bool "Support SH7760 processor"
411 config CPU_SUBTYPE_SH4_202
412 bool "Support SH4-202 processor"
415 # SH-4A Processor Support
417 config CPU_SUBTYPE_SH7723
418 bool "Support SH7723 processor"
422 select ARCH_SPARSEMEM_ENABLE
423 select SYS_SUPPORTS_SH_CMT
426 Select SH7723 if you have an SH-MobileR2 CPU.
428 config CPU_SUBTYPE_SH7724
429 bool "Support SH7724 processor"
433 select ARCH_SPARSEMEM_ENABLE
434 select SYS_SUPPORTS_SH_CMT
437 Select SH7724 if you have an SH-MobileR2R CPU.
439 config CPU_SUBTYPE_SH7734
440 bool "Support SH7734 processor"
445 Select SH7734 if you have a SH4A SH7734 CPU.
447 config CPU_SUBTYPE_SH7757
448 bool "Support SH7757 processor"
453 Select SH7757 if you have a SH4A SH7757 CPU.
455 config CPU_SUBTYPE_SH7763
456 bool "Support SH7763 processor"
458 select USB_OHCI_SH if USB_OHCI_HCD
460 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
462 config CPU_SUBTYPE_SH7770
463 bool "Support SH7770 processor"
466 config CPU_SUBTYPE_SH7780
467 bool "Support SH7780 processor"
470 config CPU_SUBTYPE_SH7785
471 bool "Support SH7785 processor"
474 select ARCH_SPARSEMEM_ENABLE
475 select SYS_SUPPORTS_NUMA
478 config CPU_SUBTYPE_SH7786
479 bool "Support SH7786 processor"
482 select CPU_HAS_PTEAEX
483 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
484 select USB_OHCI_SH if USB_OHCI_HCD
485 select USB_EHCI_SH if USB_EHCI_HCD
488 config CPU_SUBTYPE_SHX3
489 bool "Support SH-X3 processor"
492 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
496 # SH4AL-DSP Processor Support
498 config CPU_SUBTYPE_SH7343
499 bool "Support SH7343 processor"
502 select SYS_SUPPORTS_SH_CMT
504 config CPU_SUBTYPE_SH7722
505 bool "Support SH7722 processor"
509 select ARCH_SPARSEMEM_ENABLE
510 select SYS_SUPPORTS_NUMA
511 select SYS_SUPPORTS_SH_CMT
514 config CPU_SUBTYPE_SH7366
515 bool "Support SH7366 processor"
519 select ARCH_SPARSEMEM_ENABLE
520 select SYS_SUPPORTS_NUMA
521 select SYS_SUPPORTS_SH_CMT
530 prompt "Processor sub-type selection"
532 # SH-5 Processor Support
534 config CPU_SUBTYPE_SH5_101
535 bool "Support SH5-101 processor"
538 config CPU_SUBTYPE_SH5_103
539 bool "Support SH5-103 processor"
546 source "arch/sh/mm/Kconfig"
548 source "arch/sh/Kconfig.cpu"
550 source "arch/sh/boards/Kconfig"
552 menu "Timer and clock configuration"
555 int "Peripheral clock frequency (in Hz)"
556 depends on SH_CLK_CPG_LEGACY
557 default "31250000" if CPU_SUBTYPE_SH7619
558 default "33333333" if CPU_SUBTYPE_SH7770 || \
559 CPU_SUBTYPE_SH7760 || \
560 CPU_SUBTYPE_SH7705 || \
561 CPU_SUBTYPE_SH7203 || \
562 CPU_SUBTYPE_SH7206 || \
563 CPU_SUBTYPE_SH7263 || \
565 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
566 default "66000000" if CPU_SUBTYPE_SH4_202
569 This option is used to specify the peripheral clock frequency.
570 This is necessary for determining the reference clock value on
571 platforms lacking an RTC.
576 config SH_CLK_CPG_LEGACY
577 depends on SH_CLK_CPG
578 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
579 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
580 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
585 menu "CPU Frequency scaling"
586 source "drivers/cpufreq/Kconfig"
589 source "arch/sh/drivers/Kconfig"
593 menu "Kernel features"
595 source "kernel/Kconfig.hz"
598 bool "kexec system call (EXPERIMENTAL)"
599 depends on SUPERH32 && MMU
602 kexec is a system call that implements the ability to shutdown your
603 current kernel, and to start another kernel. It is like a reboot
604 but it is independent of the system firmware. And like a reboot
605 you can start any kernel with it, not just Linux.
607 The name comes from the similarity to the exec system call.
609 It is an ongoing process to be certain the hardware in a machine
610 is properly shutdown, so do not be surprised if this code does not
611 initially work for you. As of this writing the exact hardware
612 interface is strongly in flux, so no good recommendation can be
616 bool "kernel crash dumps (EXPERIMENTAL)"
617 depends on SUPERH32 && BROKEN_ON_SMP
619 Generate crash dump after being started by kexec.
620 This should be normally only set in special crash dump kernels
621 which are loaded in the main kernel with kexec-tools into
622 a specially reserved region and then later executed after
623 a crash by kdump/kexec. The crash dump kernel must be compiled
624 to a memory address not used by the main kernel using
627 For more details see Documentation/kdump/kdump.rst
630 bool "kexec jump (EXPERIMENTAL)"
631 depends on SUPERH32 && KEXEC && HIBERNATION
633 Jump between original kernel and kexeced kernel and invoke
636 config PHYSICAL_START
637 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
640 This gives the physical address where the kernel is loaded
641 and is ordinarily the same as MEMORY_START.
643 Different values are primarily used in the case of kexec on panic
644 where the fail safe kernel needs to run at a different address
645 than the panic-ed kernel.
648 bool "Enable seccomp to safely compute untrusted bytecode"
651 This kernel feature is useful for number crunching applications
652 that may need to compute untrusted bytecode during their
653 execution. By using pipes or other transports made available to
654 the process as file descriptors supporting the read/write
655 syscalls, it's possible to isolate those applications in
656 their own address space using seccomp. Once seccomp is
657 enabled via prctl, it cannot be disabled and the task is only
658 allowed to execute a few safe syscalls defined by each seccomp
664 bool "Symmetric multi-processing support"
665 depends on SYS_SUPPORTS_SMP
667 This enables support for systems with more than one CPU. If you have
668 a system with only one CPU, say N. If you have a system with more
671 If you say N here, the kernel will run on uni- and multiprocessor
672 machines, but will use only one CPU of a multiprocessor machine. If
673 you say Y here, the kernel will run on many, but not all,
674 uniprocessor machines. On a uniprocessor machine, the kernel
675 will run faster if you say N here.
677 People using multiprocessor machines who say Y here should also say
678 Y to "Enhanced Real Time Clock Support", below.
680 See also <file:Documentation/lockup-watchdogs.txt> and the SMP-HOWTO
681 available at <http://www.tldp.org/docs.html#howto>.
683 If you don't know what to do here, say N.
686 int "Maximum number of CPUs (2-32)"
689 default "4" if CPU_SUBTYPE_SHX3
692 This allows you to specify the maximum number of CPUs which this
693 kernel will support. The maximum supported value is 32 and the
694 minimum value which makes sense is 2.
696 This is purely to save memory - each supported CPU adds
697 approximately eight kilobytes to the kernel image.
700 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
703 Say Y here to experiment with turning CPUs off and on. CPUs
704 can be controlled through /sys/devices/system/cpu.
708 depends on !SMP && SUPERH32
710 This enables support for gUSA (general UserSpace Atomicity).
711 This is the default implementation for both UP and non-ll/sc
712 CPUs, and is used by the libc, amongst others.
714 For additional information, design information can be found
715 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
717 This should only be disabled for special cases where alternate
718 atomicity implementations exist.
721 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
722 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
724 Enabling this option will allow the kernel to implement some
725 atomic operations using a software implementation of load-locked/
726 store-conditional (LLSC). On machines which do not have hardware
727 LLSC, this should be more efficient than the other alternative of
728 disabling interrupts around the atomic sequence.
730 config HW_PERF_EVENTS
731 bool "Enable hardware performance counter support for perf events"
732 depends on PERF_EVENTS && CPU_HAS_PMU
735 Enable hardware performance counter support for perf events. If
736 disabled, perf events will use software events only.
738 source "drivers/sh/Kconfig"
744 config USE_BUILTIN_DTB
745 bool "Use builtin DTB"
747 depends on SH_DEVICE_TREE
749 Link a device tree blob for particular hardware into the kernel,
750 suppressing use of the DTB pointer provided by the bootloader.
751 This option should only be used with legacy bootloaders that are
752 not capable of providing a DTB to the kernel, or for experimental
753 hardware without stable device tree bindings.
755 config BUILTIN_DTB_SOURCE
756 string "Source file for builtin DTB"
758 depends on USE_BUILTIN_DTB
760 Base name (without suffix, relative to arch/sh/boot/dts) for the
761 a DTS file that will be used to produce the DTB linked into the
764 config ZERO_PAGE_OFFSET
766 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
767 SH_7751_SOLUTION_ENGINE
768 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
769 default "0x00002000" if PAGE_SIZE_8KB
772 This sets the default offset of zero page.
774 config BOOT_LINK_OFFSET
776 default "0x00210000" if SH_SHMIN
777 default "0x00400000" if SH_CAYMAN
778 default "0x00810000" if SH_7780_SOLUTION_ENGINE
779 default "0x009e0000" if SH_TITAN
780 default "0x01800000" if SH_SDK7780
781 default "0x02000000" if SH_EDOSK7760
784 This option allows you to set the link address offset of the zImage.
785 This can be useful if you are on a board which has a small amount of
790 default "0x00001000" if PAGE_SIZE_4KB
791 default "0x00002000" if PAGE_SIZE_8KB
792 default "0x00004000" if PAGE_SIZE_16KB
793 default "0x00010000" if PAGE_SIZE_64KB
796 config ROMIMAGE_MMCIF
797 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
798 depends on CPU_SUBTYPE_SH7724
800 Say Y here to include experimental MMCIF loading code in
801 romImage. With this enabled it is possible to write the romImage
802 kernel image to an MMC card and boot the kernel straight from
803 the reset vector. At reset the processor Mask ROM will load the
804 first part of the romImage which in turn loads the rest the kernel
805 image to RAM using the MMCIF hardware block.
808 prompt "Kernel command line"
810 default CMDLINE_OVERWRITE
812 Setting this option allows the kernel command line arguments
815 config CMDLINE_OVERWRITE
816 bool "Overwrite bootloader kernel arguments"
818 Given string will overwrite any arguments passed in by
821 config CMDLINE_EXTEND
822 bool "Extend bootloader kernel arguments"
824 Given string will be concatenated with arguments passed in
830 string "Kernel command line arguments string"
831 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
832 default "console=ttySC1,115200"
839 tristate "SuperHyway Bus support"
840 depends on CPU_SUBTYPE_SH4_202
843 bool "Maple Bus support"
844 depends on SH_DREAMCAST
846 The Maple Bus is SEGA's serial communication bus for peripherals
847 on the Dreamcast. Without this bus support you won't be able to
848 get your Dreamcast keyboard etc to work, so most users
849 probably want to say 'Y' here, unless you are only using the
850 Dreamcast with a serial line terminal or a remote network
855 menu "Power management options (EXPERIMENTAL)"
857 source "kernel/power/Kconfig"
859 source "drivers/cpuidle/Kconfig"