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Analysis of U-Boot and Method of Its Porting Based on MPC8321

Zeng Zhen-hu

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Abstract

Bootloader development is a key step for porting operation system to a CPU,which plays an important role in embedded system.As a universal bootloader,U-Boot is selected to be ported to the PowerPC processor here and this paper analyses porting process of U-boot on the self-made target board based on processor MPC8321.Firstly,a brief description of the U-Boot and target board hardware resources.Then,it analyses the boot flow of U-Boot in details.At last,the process of the porting from the choice of reference board and the transplanting U-Boot to the self-made target board are given.Finally downloading U-boot.bin to the platform,it runs steadily and boots Linux successfully.

About this research paper

What this paper is about

Bootloader development is a key step for porting operation system to a CPU,which plays an important role in embedded system.As a universal bootloader,U-Boot is selected to be ported to the PowerPC processor here and this paper analyses porting process of U-boot on the self-made target board based on processor MPC8321.Firstly,a brief description of the U-Boot and target board hardware resources.Then,it analyses the boot flow of U-Boot in details.At last,the process of the porting from the choice of reference board and the transplanting U-Boot to the self-made target board are given.Finally downloading U-boot.bin to the platform,it runs steadily and boots Linux successfully.

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Method / approach

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Available abstract

Bootloader development is a key step for porting operation system to a CPU,which plays an important role in embedded system.As a universal bootloader,U-Boot is selected to be ported to the PowerPC processor here and this paper analyses porting process of U-boot on the self-made target board based on processor MPC8321.Firstly,a brief description of the U-Boot and target board hardware resources.Then,it analyses the boot flow of U-Boot in details.At last,the process of the porting from the choice of reference board and the transplanting U-Boot to the self-made target board are given.Finally downloading U-boot.bin to the platform,it runs steadily and boots Linux successfully.

Key concepts: Booting, Porting, PowerPC, Embedded system, Operating system, Upload, Process (computing), Computer science

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