arch/sh/Kconfig.cpu

Source file repositories/reference/linux-study-clean/arch/sh/Kconfig.cpu

File Facts

System: Linux kernel
Corpus path: arch/sh/Kconfig.cpu
Extension: .cpu
Size: 2378 bytes
Lines: 101
Domain: Architecture Layer
Bucket: arch/sh
Inferred role: Architecture Layer: arch/sh
Status: atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0
menu "Processor features"

choice
	prompt "Endianness selection" 
	default CPU_LITTLE_ENDIAN
	help
	  Some SuperH machines can be configured for either little or big
	  endian byte order. These modes require different kernels.

config CPU_LITTLE_ENDIAN
	bool "Little Endian"

config CPU_BIG_ENDIAN
	bool "Big Endian"

endchoice

config SH_FPU
	def_bool y
	prompt "FPU support"
	depends on CPU_HAS_FPU
	help
	  Selecting this option will enable support for SH processors that
	  have FPU units (ie, SH77xx).

	  This option must be set in order to enable the FPU.

config SH_FPU_EMU
	def_bool n
	prompt "FPU emulation support"
	depends on !SH_FPU
	help
	  Selecting this option will enable support for software FPU emulation.
	  Most SH-3 users will want to say Y here, whereas most SH-4 users will
	  want to say N.

config SH_DSP
	def_bool y
	prompt "DSP support"
	depends on CPU_HAS_DSP
	help
	  Selecting this option will enable support for SH processors that
	  have DSP units (ie, SH2-DSP, SH3-DSP, and SH4AL-DSP).

	  This option must be set in order to enable the DSP.

config SH_ADC
	def_bool y
	prompt "ADC support"
	depends on CPU_SH3
	help
	  Selecting this option will allow the Linux kernel to use SH3 on-chip
	  ADC module.

	  If unsure, say N.

config SH_STORE_QUEUES
	bool "Support for Store Queues"
	depends on CPU_SH4
	help
	  Selecting this option will enable an in-kernel API for manipulating
	  the store queues integrated in the SH-4 processors.

config SPECULATIVE_EXECUTION
	bool "Speculative subroutine return"
	depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785 || CPU_SUBTYPE_SH7786
	help
	  This enables support for a speculative instruction fetch for
	  subroutine return. There are various pitfalls associated with

Annotation

Atlas domain: Architecture Layer / arch/sh.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.