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 HAVE_FAST_GUP if MMU
19 select ARCH_HAVE_CUSTOM_GPIO_H
20 select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
21 select ARCH_HAS_GCOV_PROFILE_ALL
22 select PERF_USE_VMALLOC
23 select HAVE_DEBUG_KMEMLEAK
24 select HAVE_KERNEL_GZIP
25 select CPU_NO_EFFICIENT_FFS
26 select HAVE_KERNEL_BZIP2
27 select HAVE_KERNEL_LZMA
29 select HAVE_KERNEL_LZO
31 select ARCH_WANT_IPC_PARSE_VERSION
32 select HAVE_SYSCALL_TRACEPOINTS
33 select HAVE_REGS_AND_STACK_ACCESS_API
34 select MAY_HAVE_SPARSE_IRQ
35 select IRQ_FORCED_THREADING
37 select GENERIC_ATOMIC64
38 select GENERIC_IRQ_SHOW
39 select GENERIC_SMP_IDLE_THREAD
40 select GENERIC_IDLE_POLL_SETUP
41 select GENERIC_CLOCKEVENTS
42 select GENERIC_CMOS_UPDATE if SH_SH03 || SH_DREAMCAST
43 select GENERIC_PCI_IOMAP if PCI
44 select GENERIC_SCHED_CLOCK
45 select GENERIC_STRNCPY_FROM_USER
46 select GENERIC_STRNLEN_USER
47 select HAVE_MOD_ARCH_SPECIFIC if DWARF_UNWINDER
48 select MODULES_USE_ELF_RELA
49 select NO_GENERIC_PCI_IOPORT_MAP if PCI
52 select PCI_DOMAINS if PCI
53 select HAVE_ARCH_AUDITSYSCALL
54 select HAVE_FUTEX_CMPXCHG if FUTEX
56 select NEED_SG_DMA_LENGTH
57 select ARCH_HAS_GIGANTIC_PAGE
60 The SuperH is a RISC processor targeted for use in embedded systems
61 and consumer electronics; it was also used in the Sega Dreamcast
62 gaming console. The SuperH port has a home page at
63 <http://www.linux-sh.org/>.
66 def_bool "$(ARCH)" = "sh"
67 select ARCH_32BIT_OFF_T
68 select GUP_GET_PTE_LOW_HIGH if X2TLB
70 select HAVE_KRETPROBES
71 select HAVE_IOREMAP_PROT if MMU && !X2TLB
72 select HAVE_FUNCTION_TRACER
73 select HAVE_FTRACE_MCOUNT_RECORD
74 select HAVE_DYNAMIC_FTRACE
75 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
76 select ARCH_WANT_IPC_PARSE_VERSION
77 select HAVE_FUNCTION_GRAPH_TRACER
79 select HAVE_HW_BREAKPOINT
80 select HAVE_MIXED_BREAKPOINTS_REGS
82 select ARCH_HIBERNATION_POSSIBLE if MMU
84 select HAVE_STACKPROTECTOR
87 def_bool "$(ARCH)" = "sh64"
88 select HAVE_EXIT_THREAD
93 default "arch/sh/configs/shx3_defconfig" if SUPERH32
94 default "arch/sh/configs/cayman_defconfig" if SUPERH64
98 depends on BUG && SUPERH32
104 config GENERIC_HWEIGHT
107 config GENERIC_CALIBRATE_DELAY
110 config GENERIC_LOCKBREAK
112 depends on SMP && PREEMPT
114 config ARCH_SUSPEND_POSSIBLE
117 config ARCH_HIBERNATION_POSSIBLE
120 config SYS_SUPPORTS_APM_EMULATION
122 select ARCH_SUSPEND_POSSIBLE
124 config SYS_SUPPORTS_HUGETLBFS
127 config SYS_SUPPORTS_SMP
130 config SYS_SUPPORTS_NUMA
133 config STACKTRACE_SUPPORT
136 config LOCKDEP_SUPPORT
139 config ARCH_HAS_ILOG2_U32
142 config ARCH_HAS_ILOG2_U64
147 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
148 !SH_HP6XX && !SH_SOLUTION_ENGINE
159 config DMA_NONCOHERENT
160 def_bool !DMA_COHERENT
161 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
163 config PGTABLE_LEVELS
179 select UNCACHED_MAPPING
185 select OF_EARLY_FLATTREE
189 select CPU_HAS_INTEVT
192 select SYS_SUPPORTS_SH_TMU
196 select CPU_HAS_INTEVT
198 select CPU_HAS_FPU if !CPU_SH4AL_DSP
200 select SYS_SUPPORTS_SH_TMU
201 select SYS_SUPPORTS_HUGETLBFS if MMU
215 select SYS_SUPPORTS_SH_TMU
216 select SYS_SUPPORTS_HUGETLBFS if MMU
224 select SYS_SUPPORTS_SMP
225 select SYS_SUPPORTS_NUMA
229 select ARCH_SUSPEND_POSSIBLE
233 depends on CPU_SH4 || CPU_SH4A
240 prompt "Processor sub-type selection"
246 # SH-2 Processor Support
248 config CPU_SUBTYPE_SH7619
249 bool "Support SH7619 processor"
251 select SYS_SUPPORTS_SH_CMT
253 config CPU_SUBTYPE_J2
254 bool "Support J2 processor"
256 select SYS_SUPPORTS_SMP
257 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
259 # SH-2A Processor Support
261 config CPU_SUBTYPE_SH7201
262 bool "Support SH7201 processor"
265 select SYS_SUPPORTS_SH_MTU2
267 config CPU_SUBTYPE_SH7203
268 bool "Support SH7203 processor"
271 select SYS_SUPPORTS_SH_CMT
272 select SYS_SUPPORTS_SH_MTU2
275 config CPU_SUBTYPE_SH7206
276 bool "Support SH7206 processor"
278 select SYS_SUPPORTS_SH_CMT
279 select SYS_SUPPORTS_SH_MTU2
281 config CPU_SUBTYPE_SH7263
282 bool "Support SH7263 processor"
285 select SYS_SUPPORTS_SH_CMT
286 select SYS_SUPPORTS_SH_MTU2
288 config CPU_SUBTYPE_SH7264
289 bool "Support SH7264 processor"
292 select SYS_SUPPORTS_SH_CMT
293 select SYS_SUPPORTS_SH_MTU2
296 config CPU_SUBTYPE_SH7269
297 bool "Support SH7269 processor"
300 select SYS_SUPPORTS_SH_CMT
301 select SYS_SUPPORTS_SH_MTU2
304 config CPU_SUBTYPE_MXG
305 bool "Support MX-G processor"
307 select SYS_SUPPORTS_SH_MTU2
309 Select MX-G if running on an R8A03022BG part.
311 # SH-3 Processor Support
313 config CPU_SUBTYPE_SH7705
314 bool "Support SH7705 processor"
317 config CPU_SUBTYPE_SH7706
318 bool "Support SH7706 processor"
321 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
323 config CPU_SUBTYPE_SH7707
324 bool "Support SH7707 processor"
327 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
329 config CPU_SUBTYPE_SH7708
330 bool "Support SH7708 processor"
333 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
334 if you have a 100 Mhz SH-3 HD6417708R CPU.
336 config CPU_SUBTYPE_SH7709
337 bool "Support SH7709 processor"
340 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
342 config CPU_SUBTYPE_SH7710
343 bool "Support SH7710 processor"
347 Select SH7710 if you have a SH3-DSP SH7710 CPU.
349 config CPU_SUBTYPE_SH7712
350 bool "Support SH7712 processor"
354 Select SH7712 if you have a SH3-DSP SH7712 CPU.
356 config CPU_SUBTYPE_SH7720
357 bool "Support SH7720 processor"
360 select SYS_SUPPORTS_SH_CMT
361 select USB_OHCI_SH if USB_OHCI_HCD
364 Select SH7720 if you have a SH3-DSP SH7720 CPU.
366 config CPU_SUBTYPE_SH7721
367 bool "Support SH7721 processor"
370 select SYS_SUPPORTS_SH_CMT
371 select USB_OHCI_SH if USB_OHCI_HCD
373 Select SH7721 if you have a SH3-DSP SH7721 CPU.
375 # SH-4 Processor Support
377 config CPU_SUBTYPE_SH7750
378 bool "Support SH7750 processor"
381 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
383 config CPU_SUBTYPE_SH7091
384 bool "Support SH7091 processor"
387 Select SH7091 if you have an SH-4 based Sega device (such as
388 the Dreamcast, Naomi, and Naomi 2).
390 config CPU_SUBTYPE_SH7750R
391 bool "Support SH7750R processor"
394 config CPU_SUBTYPE_SH7750S
395 bool "Support SH7750S processor"
398 config CPU_SUBTYPE_SH7751
399 bool "Support SH7751 processor"
402 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
403 or if you have a HD6417751R CPU.
405 config CPU_SUBTYPE_SH7751R
406 bool "Support SH7751R processor"
409 config CPU_SUBTYPE_SH7760
410 bool "Support SH7760 processor"
413 config CPU_SUBTYPE_SH4_202
414 bool "Support SH4-202 processor"
417 # SH-4A Processor Support
419 config CPU_SUBTYPE_SH7723
420 bool "Support SH7723 processor"
424 select ARCH_SPARSEMEM_ENABLE
425 select SYS_SUPPORTS_SH_CMT
428 Select SH7723 if you have an SH-MobileR2 CPU.
430 config CPU_SUBTYPE_SH7724
431 bool "Support SH7724 processor"
435 select ARCH_SPARSEMEM_ENABLE
436 select SYS_SUPPORTS_SH_CMT
439 Select SH7724 if you have an SH-MobileR2R CPU.
441 config CPU_SUBTYPE_SH7734
442 bool "Support SH7734 processor"
447 Select SH7734 if you have a SH4A SH7734 CPU.
449 config CPU_SUBTYPE_SH7757
450 bool "Support SH7757 processor"
455 Select SH7757 if you have a SH4A SH7757 CPU.
457 config CPU_SUBTYPE_SH7763
458 bool "Support SH7763 processor"
460 select USB_OHCI_SH if USB_OHCI_HCD
462 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
464 config CPU_SUBTYPE_SH7770
465 bool "Support SH7770 processor"
468 config CPU_SUBTYPE_SH7780
469 bool "Support SH7780 processor"
472 config CPU_SUBTYPE_SH7785
473 bool "Support SH7785 processor"
476 select ARCH_SPARSEMEM_ENABLE
477 select SYS_SUPPORTS_NUMA
480 config CPU_SUBTYPE_SH7786
481 bool "Support SH7786 processor"
484 select CPU_HAS_PTEAEX
485 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
486 select USB_OHCI_SH if USB_OHCI_HCD
487 select USB_EHCI_SH if USB_EHCI_HCD
490 config CPU_SUBTYPE_SHX3
491 bool "Support SH-X3 processor"
494 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
498 # SH4AL-DSP Processor Support
500 config CPU_SUBTYPE_SH7343
501 bool "Support SH7343 processor"
504 select SYS_SUPPORTS_SH_CMT
506 config CPU_SUBTYPE_SH7722
507 bool "Support SH7722 processor"
511 select ARCH_SPARSEMEM_ENABLE
512 select SYS_SUPPORTS_NUMA
513 select SYS_SUPPORTS_SH_CMT
516 config CPU_SUBTYPE_SH7366
517 bool "Support SH7366 processor"
521 select ARCH_SPARSEMEM_ENABLE
522 select SYS_SUPPORTS_NUMA
523 select SYS_SUPPORTS_SH_CMT
532 prompt "Processor sub-type selection"
534 # SH-5 Processor Support
536 config CPU_SUBTYPE_SH5_101
537 bool "Support SH5-101 processor"
540 config CPU_SUBTYPE_SH5_103
541 bool "Support SH5-103 processor"
548 source "arch/sh/mm/Kconfig"
550 source "arch/sh/Kconfig.cpu"
552 source "arch/sh/boards/Kconfig"
554 menu "Timer and clock configuration"
557 int "Peripheral clock frequency (in Hz)"
558 depends on SH_CLK_CPG_LEGACY
559 default "31250000" if CPU_SUBTYPE_SH7619
560 default "33333333" if CPU_SUBTYPE_SH7770 || \
561 CPU_SUBTYPE_SH7760 || \
562 CPU_SUBTYPE_SH7705 || \
563 CPU_SUBTYPE_SH7203 || \
564 CPU_SUBTYPE_SH7206 || \
565 CPU_SUBTYPE_SH7263 || \
567 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
568 default "66000000" if CPU_SUBTYPE_SH4_202
571 This option is used to specify the peripheral clock frequency.
572 This is necessary for determining the reference clock value on
573 platforms lacking an RTC.
578 config SH_CLK_CPG_LEGACY
579 depends on SH_CLK_CPG
580 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
581 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
582 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
587 menu "CPU Frequency scaling"
588 source "drivers/cpufreq/Kconfig"
591 source "arch/sh/drivers/Kconfig"
595 menu "Kernel features"
597 source "kernel/Kconfig.hz"
600 bool "kexec system call (EXPERIMENTAL)"
601 depends on SUPERH32 && MMU
604 kexec is a system call that implements the ability to shutdown your
605 current kernel, and to start another kernel. It is like a reboot
606 but it is independent of the system firmware. And like a reboot
607 you can start any kernel with it, not just Linux.
609 The name comes from the similarity to the exec system call.
611 It is an ongoing process to be certain the hardware in a machine
612 is properly shutdown, so do not be surprised if this code does not
613 initially work for you. As of this writing the exact hardware
614 interface is strongly in flux, so no good recommendation can be
618 bool "kernel crash dumps (EXPERIMENTAL)"
619 depends on SUPERH32 && BROKEN_ON_SMP
621 Generate crash dump after being started by kexec.
622 This should be normally only set in special crash dump kernels
623 which are loaded in the main kernel with kexec-tools into
624 a specially reserved region and then later executed after
625 a crash by kdump/kexec. The crash dump kernel must be compiled
626 to a memory address not used by the main kernel using
629 For more details see Documentation/admin-guide/kdump/kdump.rst
632 bool "kexec jump (EXPERIMENTAL)"
633 depends on SUPERH32 && KEXEC && HIBERNATION
635 Jump between original kernel and kexeced kernel and invoke
638 config PHYSICAL_START
639 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
642 This gives the physical address where the kernel is loaded
643 and is ordinarily the same as MEMORY_START.
645 Different values are primarily used in the case of kexec on panic
646 where the fail safe kernel needs to run at a different address
647 than the panic-ed kernel.
650 bool "Enable seccomp to safely compute untrusted bytecode"
653 This kernel feature is useful for number crunching applications
654 that may need to compute untrusted bytecode during their
655 execution. By using pipes or other transports made available to
656 the process as file descriptors supporting the read/write
657 syscalls, it's possible to isolate those applications in
658 their own address space using seccomp. Once seccomp is
659 enabled via prctl, it cannot be disabled and the task is only
660 allowed to execute a few safe syscalls defined by each seccomp
666 bool "Symmetric multi-processing support"
667 depends on SYS_SUPPORTS_SMP
669 This enables support for systems with more than one CPU. If you have
670 a system with only one CPU, say N. If you have a system with more
673 If you say N here, the kernel will run on uni- and multiprocessor
674 machines, but will use only one CPU of a multiprocessor machine. If
675 you say Y here, the kernel will run on many, but not all,
676 uniprocessor machines. On a uniprocessor machine, the kernel
677 will run faster if you say N here.
679 People using multiprocessor machines who say Y here should also say
680 Y to "Enhanced Real Time Clock Support", below.
682 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
683 available at <http://www.tldp.org/docs.html#howto>.
685 If you don't know what to do here, say N.
688 int "Maximum number of CPUs (2-32)"
691 default "4" if CPU_SUBTYPE_SHX3
694 This allows you to specify the maximum number of CPUs which this
695 kernel will support. The maximum supported value is 32 and the
696 minimum value which makes sense is 2.
698 This is purely to save memory - each supported CPU adds
699 approximately eight kilobytes to the kernel image.
702 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
705 Say Y here to experiment with turning CPUs off and on. CPUs
706 can be controlled through /sys/devices/system/cpu.
710 depends on !SMP && SUPERH32
712 This enables support for gUSA (general UserSpace Atomicity).
713 This is the default implementation for both UP and non-ll/sc
714 CPUs, and is used by the libc, amongst others.
716 For additional information, design information can be found
717 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
719 This should only be disabled for special cases where alternate
720 atomicity implementations exist.
723 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
724 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
726 Enabling this option will allow the kernel to implement some
727 atomic operations using a software implementation of load-locked/
728 store-conditional (LLSC). On machines which do not have hardware
729 LLSC, this should be more efficient than the other alternative of
730 disabling interrupts around the atomic sequence.
732 config HW_PERF_EVENTS
733 bool "Enable hardware performance counter support for perf events"
734 depends on PERF_EVENTS && CPU_HAS_PMU
737 Enable hardware performance counter support for perf events. If
738 disabled, perf events will use software events only.
740 source "drivers/sh/Kconfig"
746 config USE_BUILTIN_DTB
747 bool "Use builtin DTB"
749 depends on SH_DEVICE_TREE
751 Link a device tree blob for particular hardware into the kernel,
752 suppressing use of the DTB pointer provided by the bootloader.
753 This option should only be used with legacy bootloaders that are
754 not capable of providing a DTB to the kernel, or for experimental
755 hardware without stable device tree bindings.
757 config BUILTIN_DTB_SOURCE
758 string "Source file for builtin DTB"
760 depends on USE_BUILTIN_DTB
762 Base name (without suffix, relative to arch/sh/boot/dts) for the
763 a DTS file that will be used to produce the DTB linked into the
766 config ZERO_PAGE_OFFSET
768 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
769 SH_7751_SOLUTION_ENGINE
770 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
771 default "0x00002000" if PAGE_SIZE_8KB
774 This sets the default offset of zero page.
776 config BOOT_LINK_OFFSET
778 default "0x00210000" if SH_SHMIN
779 default "0x00400000" if SH_CAYMAN
780 default "0x00810000" if SH_7780_SOLUTION_ENGINE
781 default "0x009e0000" if SH_TITAN
782 default "0x01800000" if SH_SDK7780
783 default "0x02000000" if SH_EDOSK7760
786 This option allows you to set the link address offset of the zImage.
787 This can be useful if you are on a board which has a small amount of
792 default "0x00001000" if PAGE_SIZE_4KB
793 default "0x00002000" if PAGE_SIZE_8KB
794 default "0x00004000" if PAGE_SIZE_16KB
795 default "0x00010000" if PAGE_SIZE_64KB
798 config ROMIMAGE_MMCIF
799 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
800 depends on CPU_SUBTYPE_SH7724
802 Say Y here to include experimental MMCIF loading code in
803 romImage. With this enabled it is possible to write the romImage
804 kernel image to an MMC card and boot the kernel straight from
805 the reset vector. At reset the processor Mask ROM will load the
806 first part of the romImage which in turn loads the rest the kernel
807 image to RAM using the MMCIF hardware block.
810 prompt "Kernel command line"
812 default CMDLINE_OVERWRITE
814 Setting this option allows the kernel command line arguments
817 config CMDLINE_OVERWRITE
818 bool "Overwrite bootloader kernel arguments"
820 Given string will overwrite any arguments passed in by
823 config CMDLINE_EXTEND
824 bool "Extend bootloader kernel arguments"
826 Given string will be concatenated with arguments passed in
832 string "Kernel command line arguments string"
833 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
834 default "console=ttySC1,115200"
841 tristate "SuperHyway Bus support"
842 depends on CPU_SUBTYPE_SH4_202
845 bool "Maple Bus support"
846 depends on SH_DREAMCAST
848 The Maple Bus is SEGA's serial communication bus for peripherals
849 on the Dreamcast. Without this bus support you won't be able to
850 get your Dreamcast keyboard etc to work, so most users
851 probably want to say 'Y' here, unless you are only using the
852 Dreamcast with a serial line terminal or a remote network
857 menu "Power management options (EXPERIMENTAL)"
859 source "kernel/power/Kconfig"
861 source "drivers/cpuidle/Kconfig"