arch/powerpc/boot/dts/fsl/p2020rdb.dts

Source file repositories/reference/linux-study-clean/arch/powerpc/boot/dts/fsl/p2020rdb.dts

File Facts

System
Linux kernel
Corpus path
arch/powerpc/boot/dts/fsl/p2020rdb.dts
Extension
.dts
Size
5943 bytes
Lines
288
Domain
Architecture Layer
Bucket
arch/powerpc
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
/*
 * P2020 RDB Device Tree Source
 *
 * Copyright 2009-2012 Freescale Semiconductor Inc.
 */

/include/ "p2020si-pre.dtsi"

/ {
	model = "fsl,P2020RDB";
	compatible = "fsl,P2020RDB";

	aliases {
		ethernet0 = &enet0;
		ethernet1 = &enet1;
		ethernet2 = &enet2;
		serial0 = &serial0;
		serial1 = &serial1;
		pci0 = &pci0;
		pci1 = &pci1;
	};

	memory {
		device_type = "memory";
	};

	lbc: localbus@ffe05000 {
		reg = <0 0xffe05000 0 0x1000>;

		/* NOR and NAND Flashes */
		ranges = <0x0 0x0 0x0 0xef000000 0x01000000
			  0x1 0x0 0x0 0xffa00000 0x00040000
			  0x2 0x0 0x0 0xffb00000 0x00020000>;

		nor@0,0 {
			#address-cells = <1>;
			#size-cells = <1>;
			compatible = "cfi-flash";
			reg = <0x0 0x0 0x1000000>;
			bank-width = <2>;
			device-width = <1>;

			partition@0 {
				/* This location must not be altered  */
				/* 256KB for Vitesse 7385 Switch firmware */
				reg = <0x0 0x00040000>;
				label = "NOR (RO) Vitesse-7385 Firmware";
				read-only;
			};

			partition@40000 {
				/* 256KB for DTB Image */
				reg = <0x00040000 0x00040000>;
				label = "NOR (RO) DTB Image";
				read-only;
			};

			partition@80000 {
				/* 3.5 MB for Linux Kernel Image */
				reg = <0x00080000 0x00380000>;
				label = "NOR (RO) Linux Kernel Image";
				read-only;
			};

			partition@400000 {
				/* 11MB for JFFS2 based Root file System */
				reg = <0x00400000 0x00b00000>;
				label = "NOR (RW) JFFS2 Root File System";
			};

Annotation

Implementation Notes