arch/arm64/boot/dts/apple/spi1-nvram.dtsi

File Facts

System

Linux kernel

Corpus path

arch/arm64/boot/dts/apple/spi1-nvram.dtsi

Extension

.dtsi

Size

653 bytes

Lines

38

Domain

Architecture Layer

Bucket

arch/arm64

Inferred role

Architecture Layer: configuration, schema, or hardware description

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+ OR MIT
//
// Devicetree include for common spi-nor nvram flash.
//
// Apple uses a consistent configuration for the nvram on all known M1* and
// M2* devices.
//
// Copyright The Asahi Linux Contributors

/ {
	aliases {
		nvram = &nvram;
	};
};

&spi1 {
	status = "okay";

	flash@0 {
		compatible = "jedec,spi-nor";
		reg = <0x0>;
		spi-max-frequency = <25000000>;

		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;
			#size-cells = <1>;

			nvram: partition@700000 {
				label = "nvram";
				/* To be filled by the loader */
				reg = <0x0 0x0>;
				status = "disabled";
			};
		};
	};
};

Annotation

• Atlas domain: Architecture Layer / arch/arm64.
• 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.