arch/nios2/boot/dts/3c120_devboard.dts

Source file repositories/reference/linux-study-clean/arch/nios2/boot/dts/3c120_devboard.dts

File Facts

System
Linux kernel
Corpus path
arch/nios2/boot/dts/3c120_devboard.dts
Extension
.dts
Size
3622 bytes
Lines
154
Domain
Architecture Layer
Bucket
arch/nios2
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.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Copyright (C) 2013 Altera Corporation
 *
 * This file is generated by sopc2dts.
 */

/dts-v1/;

/ {
	model = "altr,qsys_ghrd_3c120";
	compatible = "altr,qsys_ghrd_3c120";
	#address-cells = <1>;
	#size-cells = <1>;

	cpus {
		#address-cells = <1>;
		#size-cells = <0>;

		cpu: cpu@0 {
			device_type = "cpu";
			compatible = "altr,nios2-1.0";
			reg = <0x00000000>;
			interrupt-controller;
			#interrupt-cells = <1>;
			clock-frequency = <125000000>;
			dcache-line-size = <32>;
			icache-line-size = <32>;
			dcache-size = <32768>;
			icache-size = <32768>;
			altr,implementation = "fast";
			altr,pid-num-bits = <8>;
			altr,tlb-num-ways = <16>;
			altr,tlb-num-entries = <128>;
			altr,tlb-ptr-sz = <7>;
			altr,has-div = <1>;
			altr,has-mul = <1>;
			altr,reset-addr = <0xc2800000>;
			altr,fast-tlb-miss-addr = <0xc7fff400>;
			altr,exception-addr = <0xd0000020>;
			altr,has-initda = <1>;
			altr,has-mmu = <1>;
		};
	};

	memory@0 {
		device_type = "memory";
		reg = <0x10000000 0x08000000>,
			<0x07fff400 0x00000400>;
	};

	sopc@0 {
		device_type = "soc";
		ranges;
		#address-cells = <1>;
		#size-cells = <1>;
		compatible = "altr,avalon", "simple-bus";
		bus-frequency = <125000000>;

		pb_cpu_to_io: bridge@8000000 {
			compatible = "simple-bus";
			reg = <0x08000000 0x00800000>;
			#address-cells = <1>;
			#size-cells = <1>;
			ranges = <0x00002000 0x08002000 0x00002000>,
				<0x00004000 0x08004000 0x00000400>,
				<0x00004400 0x08004400 0x00000040>,
				<0x00004800 0x08004800 0x00000040>,
				<0x00004c80 0x08004c80 0x00000020>,
				<0x00004d50 0x08004d50 0x00000008>,

Annotation

Implementation Notes