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 HAVE_PATA_PLATFORM
10 select DMA_DECLARE_COHERENT
11 select HAVE_IDE if HAS_IOPORT_MAP
12 select HAVE_MEMBLOCK_NODE_MAP
14 select HAVE_ARCH_TRACEHOOK
15 select HAVE_PERF_EVENTS
16 select HAVE_DEBUG_BUGVERBOSE
17 select HAVE_FAST_GUP if MMU
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 "$(ARCH)" = "sh"
66 select ARCH_32BIT_OFF_T
67 select GUP_GET_PTE_LOW_HIGH if X2TLB
69 select HAVE_KRETPROBES
70 select HAVE_IOREMAP_PROT if MMU && !X2TLB
71 select HAVE_FUNCTION_TRACER
72 select HAVE_FTRACE_MCOUNT_RECORD
73 select HAVE_DYNAMIC_FTRACE
74 select HAVE_FTRACE_NMI_ENTER if DYNAMIC_FTRACE
75 select ARCH_WANT_IPC_PARSE_VERSION
76 select HAVE_FUNCTION_GRAPH_TRACER
78 select HAVE_HW_BREAKPOINT
79 select HAVE_MIXED_BREAKPOINTS_REGS
81 select ARCH_HIBERNATION_POSSIBLE if MMU
83 select HAVE_STACKPROTECTOR
86 def_bool "$(ARCH)" = "sh64"
87 select HAVE_EXIT_THREAD
92 depends on BUG && SUPERH32
98 config GENERIC_HWEIGHT
101 config GENERIC_CALIBRATE_DELAY
104 config GENERIC_LOCKBREAK
106 depends on SMP && PREEMPTION
108 config ARCH_SUSPEND_POSSIBLE
111 config ARCH_HIBERNATION_POSSIBLE
114 config SYS_SUPPORTS_APM_EMULATION
116 select ARCH_SUSPEND_POSSIBLE
118 config SYS_SUPPORTS_HUGETLBFS
121 config SYS_SUPPORTS_SMP
124 config SYS_SUPPORTS_NUMA
127 config STACKTRACE_SUPPORT
130 config LOCKDEP_SUPPORT
133 config ARCH_HAS_ILOG2_U32
136 config ARCH_HAS_ILOG2_U64
141 depends on !SH_CAYMAN && !SH_SH4202_MICRODEV && !SH_SHMIN && \
142 !SH_HP6XX && !SH_SOLUTION_ENGINE
153 config DMA_NONCOHERENT
154 def_bool !DMA_COHERENT
155 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
157 config PGTABLE_LEVELS
173 select UNCACHED_MAPPING
179 select OF_EARLY_FLATTREE
183 select CPU_HAS_INTEVT
186 select SYS_SUPPORTS_SH_TMU
190 select CPU_HAS_INTEVT
192 select CPU_HAS_FPU if !CPU_SH4AL_DSP
194 select SYS_SUPPORTS_SH_TMU
195 select SYS_SUPPORTS_HUGETLBFS if MMU
209 select SYS_SUPPORTS_SH_TMU
210 select SYS_SUPPORTS_HUGETLBFS if MMU
218 select SYS_SUPPORTS_SMP
219 select SYS_SUPPORTS_NUMA
223 select ARCH_SUSPEND_POSSIBLE
227 depends on CPU_SH4 || CPU_SH4A
234 prompt "Processor sub-type selection"
240 # SH-2 Processor Support
242 config CPU_SUBTYPE_SH7619
243 bool "Support SH7619 processor"
245 select SYS_SUPPORTS_SH_CMT
247 config CPU_SUBTYPE_J2
248 bool "Support J2 processor"
250 select SYS_SUPPORTS_SMP
251 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
253 # SH-2A Processor Support
255 config CPU_SUBTYPE_SH7201
256 bool "Support SH7201 processor"
259 select SYS_SUPPORTS_SH_MTU2
261 config CPU_SUBTYPE_SH7203
262 bool "Support SH7203 processor"
265 select SYS_SUPPORTS_SH_CMT
266 select SYS_SUPPORTS_SH_MTU2
269 config CPU_SUBTYPE_SH7206
270 bool "Support SH7206 processor"
272 select SYS_SUPPORTS_SH_CMT
273 select SYS_SUPPORTS_SH_MTU2
275 config CPU_SUBTYPE_SH7263
276 bool "Support SH7263 processor"
279 select SYS_SUPPORTS_SH_CMT
280 select SYS_SUPPORTS_SH_MTU2
282 config CPU_SUBTYPE_SH7264
283 bool "Support SH7264 processor"
286 select SYS_SUPPORTS_SH_CMT
287 select SYS_SUPPORTS_SH_MTU2
290 config CPU_SUBTYPE_SH7269
291 bool "Support SH7269 processor"
294 select SYS_SUPPORTS_SH_CMT
295 select SYS_SUPPORTS_SH_MTU2
298 config CPU_SUBTYPE_MXG
299 bool "Support MX-G processor"
301 select SYS_SUPPORTS_SH_MTU2
303 Select MX-G if running on an R8A03022BG part.
305 # SH-3 Processor Support
307 config CPU_SUBTYPE_SH7705
308 bool "Support SH7705 processor"
311 config CPU_SUBTYPE_SH7706
312 bool "Support SH7706 processor"
315 Select SH7706 if you have a 133 Mhz SH-3 HD6417706 CPU.
317 config CPU_SUBTYPE_SH7707
318 bool "Support SH7707 processor"
321 Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.
323 config CPU_SUBTYPE_SH7708
324 bool "Support SH7708 processor"
327 Select SH7708 if you have a 60 Mhz SH-3 HD6417708S or
328 if you have a 100 Mhz SH-3 HD6417708R CPU.
330 config CPU_SUBTYPE_SH7709
331 bool "Support SH7709 processor"
334 Select SH7709 if you have a 80 Mhz SH-3 HD6417709 CPU.
336 config CPU_SUBTYPE_SH7710
337 bool "Support SH7710 processor"
341 Select SH7710 if you have a SH3-DSP SH7710 CPU.
343 config CPU_SUBTYPE_SH7712
344 bool "Support SH7712 processor"
348 Select SH7712 if you have a SH3-DSP SH7712 CPU.
350 config CPU_SUBTYPE_SH7720
351 bool "Support SH7720 processor"
354 select SYS_SUPPORTS_SH_CMT
355 select USB_OHCI_SH if USB_OHCI_HCD
358 Select SH7720 if you have a SH3-DSP SH7720 CPU.
360 config CPU_SUBTYPE_SH7721
361 bool "Support SH7721 processor"
364 select SYS_SUPPORTS_SH_CMT
365 select USB_OHCI_SH if USB_OHCI_HCD
367 Select SH7721 if you have a SH3-DSP SH7721 CPU.
369 # SH-4 Processor Support
371 config CPU_SUBTYPE_SH7750
372 bool "Support SH7750 processor"
375 Select SH7750 if you have a 200 Mhz SH-4 HD6417750 CPU.
377 config CPU_SUBTYPE_SH7091
378 bool "Support SH7091 processor"
381 Select SH7091 if you have an SH-4 based Sega device (such as
382 the Dreamcast, Naomi, and Naomi 2).
384 config CPU_SUBTYPE_SH7750R
385 bool "Support SH7750R processor"
388 config CPU_SUBTYPE_SH7750S
389 bool "Support SH7750S processor"
392 config CPU_SUBTYPE_SH7751
393 bool "Support SH7751 processor"
396 Select SH7751 if you have a 166 Mhz SH-4 HD6417751 CPU,
397 or if you have a HD6417751R CPU.
399 config CPU_SUBTYPE_SH7751R
400 bool "Support SH7751R processor"
403 config CPU_SUBTYPE_SH7760
404 bool "Support SH7760 processor"
407 config CPU_SUBTYPE_SH4_202
408 bool "Support SH4-202 processor"
411 # SH-4A Processor Support
413 config CPU_SUBTYPE_SH7723
414 bool "Support SH7723 processor"
418 select ARCH_SPARSEMEM_ENABLE
419 select SYS_SUPPORTS_SH_CMT
422 Select SH7723 if you have an SH-MobileR2 CPU.
424 config CPU_SUBTYPE_SH7724
425 bool "Support SH7724 processor"
429 select ARCH_SPARSEMEM_ENABLE
430 select SYS_SUPPORTS_SH_CMT
433 Select SH7724 if you have an SH-MobileR2R CPU.
435 config CPU_SUBTYPE_SH7734
436 bool "Support SH7734 processor"
441 Select SH7734 if you have a SH4A SH7734 CPU.
443 config CPU_SUBTYPE_SH7757
444 bool "Support SH7757 processor"
449 Select SH7757 if you have a SH4A SH7757 CPU.
451 config CPU_SUBTYPE_SH7763
452 bool "Support SH7763 processor"
454 select USB_OHCI_SH if USB_OHCI_HCD
456 Select SH7763 if you have a SH4A SH7763(R5S77631) CPU.
458 config CPU_SUBTYPE_SH7770
459 bool "Support SH7770 processor"
462 config CPU_SUBTYPE_SH7780
463 bool "Support SH7780 processor"
466 config CPU_SUBTYPE_SH7785
467 bool "Support SH7785 processor"
470 select ARCH_SPARSEMEM_ENABLE
471 select SYS_SUPPORTS_NUMA
474 config CPU_SUBTYPE_SH7786
475 bool "Support SH7786 processor"
478 select CPU_HAS_PTEAEX
479 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
480 select USB_OHCI_SH if USB_OHCI_HCD
481 select USB_EHCI_SH if USB_EHCI_HCD
484 config CPU_SUBTYPE_SHX3
485 bool "Support SH-X3 processor"
488 select GENERIC_CLOCKEVENTS_BROADCAST if SMP
492 # SH4AL-DSP Processor Support
494 config CPU_SUBTYPE_SH7343
495 bool "Support SH7343 processor"
498 select SYS_SUPPORTS_SH_CMT
500 config CPU_SUBTYPE_SH7722
501 bool "Support SH7722 processor"
505 select ARCH_SPARSEMEM_ENABLE
506 select SYS_SUPPORTS_NUMA
507 select SYS_SUPPORTS_SH_CMT
510 config CPU_SUBTYPE_SH7366
511 bool "Support SH7366 processor"
515 select ARCH_SPARSEMEM_ENABLE
516 select SYS_SUPPORTS_NUMA
517 select SYS_SUPPORTS_SH_CMT
526 prompt "Processor sub-type selection"
528 # SH-5 Processor Support
530 config CPU_SUBTYPE_SH5_101
531 bool "Support SH5-101 processor"
534 config CPU_SUBTYPE_SH5_103
535 bool "Support SH5-103 processor"
542 source "arch/sh/mm/Kconfig"
544 source "arch/sh/Kconfig.cpu"
546 source "arch/sh/boards/Kconfig"
548 menu "Timer and clock configuration"
551 int "Peripheral clock frequency (in Hz)"
552 depends on SH_CLK_CPG_LEGACY
553 default "31250000" if CPU_SUBTYPE_SH7619
554 default "33333333" if CPU_SUBTYPE_SH7770 || \
555 CPU_SUBTYPE_SH7760 || \
556 CPU_SUBTYPE_SH7705 || \
557 CPU_SUBTYPE_SH7203 || \
558 CPU_SUBTYPE_SH7206 || \
559 CPU_SUBTYPE_SH7263 || \
561 default "60000000" if CPU_SUBTYPE_SH7751 || CPU_SUBTYPE_SH7751R
562 default "66000000" if CPU_SUBTYPE_SH4_202
565 This option is used to specify the peripheral clock frequency.
566 This is necessary for determining the reference clock value on
567 platforms lacking an RTC.
572 config SH_CLK_CPG_LEGACY
573 depends on SH_CLK_CPG
574 def_bool y if !CPU_SUBTYPE_SH7785 && !ARCH_SHMOBILE && \
575 !CPU_SHX3 && !CPU_SUBTYPE_SH7757 && \
576 !CPU_SUBTYPE_SH7734 && !CPU_SUBTYPE_SH7264 && \
581 menu "CPU Frequency scaling"
582 source "drivers/cpufreq/Kconfig"
585 source "arch/sh/drivers/Kconfig"
589 menu "Kernel features"
591 source "kernel/Kconfig.hz"
594 bool "kexec system call (EXPERIMENTAL)"
595 depends on SUPERH32 && MMU
598 kexec is a system call that implements the ability to shutdown your
599 current kernel, and to start another kernel. It is like a reboot
600 but it is independent of the system firmware. And like a reboot
601 you can start any kernel with it, not just Linux.
603 The name comes from the similarity to the exec system call.
605 It is an ongoing process to be certain the hardware in a machine
606 is properly shutdown, so do not be surprised if this code does not
607 initially work for you. As of this writing the exact hardware
608 interface is strongly in flux, so no good recommendation can be
612 bool "kernel crash dumps (EXPERIMENTAL)"
613 depends on SUPERH32 && BROKEN_ON_SMP
615 Generate crash dump after being started by kexec.
616 This should be normally only set in special crash dump kernels
617 which are loaded in the main kernel with kexec-tools into
618 a specially reserved region and then later executed after
619 a crash by kdump/kexec. The crash dump kernel must be compiled
620 to a memory address not used by the main kernel using
623 For more details see Documentation/admin-guide/kdump/kdump.rst
626 bool "kexec jump (EXPERIMENTAL)"
627 depends on SUPERH32 && KEXEC && HIBERNATION
629 Jump between original kernel and kexeced kernel and invoke
632 config PHYSICAL_START
633 hex "Physical address where the kernel is loaded" if (EXPERT || CRASH_DUMP)
636 This gives the physical address where the kernel is loaded
637 and is ordinarily the same as MEMORY_START.
639 Different values are primarily used in the case of kexec on panic
640 where the fail safe kernel needs to run at a different address
641 than the panic-ed kernel.
644 bool "Enable seccomp to safely compute untrusted bytecode"
647 This kernel feature is useful for number crunching applications
648 that may need to compute untrusted bytecode during their
649 execution. By using pipes or other transports made available to
650 the process as file descriptors supporting the read/write
651 syscalls, it's possible to isolate those applications in
652 their own address space using seccomp. Once seccomp is
653 enabled via prctl, it cannot be disabled and the task is only
654 allowed to execute a few safe syscalls defined by each seccomp
660 bool "Symmetric multi-processing support"
661 depends on SYS_SUPPORTS_SMP
663 This enables support for systems with more than one CPU. If you have
664 a system with only one CPU, say N. If you have a system with more
667 If you say N here, the kernel will run on uni- and multiprocessor
668 machines, but will use only one CPU of a multiprocessor machine. If
669 you say Y here, the kernel will run on many, but not all,
670 uniprocessor machines. On a uniprocessor machine, the kernel
671 will run faster if you say N here.
673 People using multiprocessor machines who say Y here should also say
674 Y to "Enhanced Real Time Clock Support", below.
676 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
677 available at <http://www.tldp.org/docs.html#howto>.
679 If you don't know what to do here, say N.
682 int "Maximum number of CPUs (2-32)"
685 default "4" if CPU_SUBTYPE_SHX3
688 This allows you to specify the maximum number of CPUs which this
689 kernel will support. The maximum supported value is 32 and the
690 minimum value which makes sense is 2.
692 This is purely to save memory - each supported CPU adds
693 approximately eight kilobytes to the kernel image.
696 bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
699 Say Y here to experiment with turning CPUs off and on. CPUs
700 can be controlled through /sys/devices/system/cpu.
704 depends on !SMP && SUPERH32
706 This enables support for gUSA (general UserSpace Atomicity).
707 This is the default implementation for both UP and non-ll/sc
708 CPUs, and is used by the libc, amongst others.
710 For additional information, design information can be found
711 in <http://lc.linux.or.jp/lc2002/papers/niibe0919p.pdf>.
713 This should only be disabled for special cases where alternate
714 atomicity implementations exist.
717 bool "Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)"
718 depends on GUSA && CPU_SH3 || (CPU_SH4 && !CPU_SH4A)
720 Enabling this option will allow the kernel to implement some
721 atomic operations using a software implementation of load-locked/
722 store-conditional (LLSC). On machines which do not have hardware
723 LLSC, this should be more efficient than the other alternative of
724 disabling interrupts around the atomic sequence.
726 config HW_PERF_EVENTS
727 bool "Enable hardware performance counter support for perf events"
728 depends on PERF_EVENTS && CPU_HAS_PMU
731 Enable hardware performance counter support for perf events. If
732 disabled, perf events will use software events only.
734 source "drivers/sh/Kconfig"
740 config USE_BUILTIN_DTB
741 bool "Use builtin DTB"
743 depends on SH_DEVICE_TREE
745 Link a device tree blob for particular hardware into the kernel,
746 suppressing use of the DTB pointer provided by the bootloader.
747 This option should only be used with legacy bootloaders that are
748 not capable of providing a DTB to the kernel, or for experimental
749 hardware without stable device tree bindings.
751 config BUILTIN_DTB_SOURCE
752 string "Source file for builtin DTB"
754 depends on USE_BUILTIN_DTB
756 Base name (without suffix, relative to arch/sh/boot/dts) for the
757 a DTS file that will be used to produce the DTB linked into the
760 config ZERO_PAGE_OFFSET
762 default "0x00010000" if PAGE_SIZE_64KB || SH_RTS7751R2D || \
763 SH_7751_SOLUTION_ENGINE
764 default "0x00004000" if PAGE_SIZE_16KB || SH_SH03
765 default "0x00002000" if PAGE_SIZE_8KB
768 This sets the default offset of zero page.
770 config BOOT_LINK_OFFSET
772 default "0x00210000" if SH_SHMIN
773 default "0x00400000" if SH_CAYMAN
774 default "0x00810000" if SH_7780_SOLUTION_ENGINE
775 default "0x009e0000" if SH_TITAN
776 default "0x01800000" if SH_SDK7780
777 default "0x02000000" if SH_EDOSK7760
780 This option allows you to set the link address offset of the zImage.
781 This can be useful if you are on a board which has a small amount of
786 default "0x00001000" if PAGE_SIZE_4KB
787 default "0x00002000" if PAGE_SIZE_8KB
788 default "0x00004000" if PAGE_SIZE_16KB
789 default "0x00010000" if PAGE_SIZE_64KB
792 config ROMIMAGE_MMCIF
793 bool "Include MMCIF loader in romImage (EXPERIMENTAL)"
794 depends on CPU_SUBTYPE_SH7724
796 Say Y here to include experimental MMCIF loading code in
797 romImage. With this enabled it is possible to write the romImage
798 kernel image to an MMC card and boot the kernel straight from
799 the reset vector. At reset the processor Mask ROM will load the
800 first part of the romImage which in turn loads the rest the kernel
801 image to RAM using the MMCIF hardware block.
804 prompt "Kernel command line"
806 default CMDLINE_OVERWRITE
808 Setting this option allows the kernel command line arguments
811 config CMDLINE_OVERWRITE
812 bool "Overwrite bootloader kernel arguments"
814 Given string will overwrite any arguments passed in by
817 config CMDLINE_EXTEND
818 bool "Extend bootloader kernel arguments"
820 Given string will be concatenated with arguments passed in
826 string "Kernel command line arguments string"
827 depends on CMDLINE_OVERWRITE || CMDLINE_EXTEND
828 default "console=ttySC1,115200"
835 tristate "SuperHyway Bus support"
836 depends on CPU_SUBTYPE_SH4_202
839 bool "Maple Bus support"
840 depends on SH_DREAMCAST
842 The Maple Bus is SEGA's serial communication bus for peripherals
843 on the Dreamcast. Without this bus support you won't be able to
844 get your Dreamcast keyboard etc to work, so most users
845 probably want to say 'Y' here, unless you are only using the
846 Dreamcast with a serial line terminal or a remote network
851 menu "Power management options (EXPERIMENTAL)"
853 source "kernel/power/Kconfig"
855 source "drivers/cpuidle/Kconfig"