arch/powerpc/boot/dts/fsl/gef_ppc9a.dts

Source file repositories/reference/linux-study-clean/arch/powerpc/boot/dts/fsl/gef_ppc9a.dts

File Facts

System
Linux kernel
Corpus path
arch/powerpc/boot/dts/fsl/gef_ppc9a.dts
Extension
.dts
Size
4439 bytes
Lines
217
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
/*
 * GE PPC9A Device Tree Source
 *
 * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
 *
 * Based on: SBS CM6 Device Tree Source
 * Copyright 2007 SBS Technologies GmbH & Co. KG
 * And: mpc8641_hpcn.dts (MPC8641 HPCN Device Tree Source)
 * Copyright 2006 Freescale Semiconductor Inc.
 */

/*
 * Compiled with dtc -I dts -O dtb -o gef_ppc9a.dtb gef_ppc9a.dts
 */

/include/ "mpc8641si-pre.dtsi"

/ {
	model = "GEF_PPC9A";
	compatible = "gef,ppc9a";

	memory {
		device_type = "memory";
		reg = <0x0 0x40000000>;	// set by uboot
	};

	lbc: localbus@fef05000 {
		reg = <0xfef05000 0x1000>;

		ranges = <0 0 0xff000000 0x01000000	// 16MB Boot flash
			  1 0 0xe8000000 0x08000000	// Paged Flash 0
			  2 0 0xe0000000 0x08000000	// Paged Flash 1
			  3 0 0xfc100000 0x00020000	// NVRAM
			  4 0 0xfc000000 0x00008000	// FPGA
			  5 0 0xfc008000 0x00008000	// AFIX FPGA
			  6 0 0xfd000000 0x00800000	// IO FPGA (8-bit)
			  7 0 0xfd800000 0x00800000>;	// IO FPGA (32-bit)

		/* flash@0,0 is a mirror of part of the memory in flash@1,0
		flash@0,0 {
			compatible = "gef,ppc9a-firmware-mirror", "cfi-flash";
			reg = <0x0 0x0 0x1000000>;
			bank-width = <4>;
			device-width = <2>;
			#address-cells = <1>;
			#size-cells = <1>;
			partition@0 {
				label = "firmware";
				reg = <0x0 0x1000000>;
				read-only;
			};
		};
		*/

		flash@1,0 {
			compatible = "gef,ppc9a-paged-flash", "cfi-flash";
			reg = <0x1 0x0 0x8000000>;
			bank-width = <4>;
			device-width = <2>;
			#address-cells = <1>;
			#size-cells = <1>;
			partition@0 {
				label = "user";
				reg = <0x0 0x7800000>;
			};
			partition@7800000 {
				label = "firmware";
				reg = <0x7800000 0x800000>;
				read-only;

Annotation

Implementation Notes