| 基于S3C2440的U-Boot双启动实现 |
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| 引用本文： | 高文辉,师奕兵,张伟.基于S3C2440的U-Boot双启动实现[J].测控技术,2012,31(2):87-91. |
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| 作者姓名： | 高文辉 师奕兵 张伟 |
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| 作者单位： | 电子科技大学自动化工程学院,四川成都,611731 |
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| 基金项目： | 中海油服企业发展基金资助项目(1017CS-A01C234) |
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| 摘 要： | 嵌入式处理器S3C2440同时支持Bootloader从Nor Flash和Nand Flash启动,而U-Boot默认的启动设备为Nor Flash。为了使U-Boot同时支持从Nor Flash和Nand Flash启动,根据U-Boot在S3C2440处理器上的启动流程和U-Boot从Nand Flash和Nor Flash启动过程的差异,添加了Nand Flash读写驱动,使其同时支持Nor Flash和Nand Flash启动,并在此基础上分析并实现了U-Boot引导Linux内核镜像的过程。实现的源代码在交叉编译环境中编译通过,可以同时支持Nor Flash和Nand Flash的启动并能正确引导Linux内核,在基于S3C2440处理器的硬件平台上稳定运行。
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| 关 键 词： | S3C2440 U-Boot 双启动 Linux内核 |
Implementation of Double Boot in U-Boot Based on S3C2440 |
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| GAO Wen-hui
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SHI Yi-bing
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ZHANG Wei.Implementation of Double Boot in U-Boot Based on S3C2440[J].Measurement & Control Technology,2012,31(2):87-91. |
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| Authors: | GAO Wen-hui SHI Yi-bing ZHANG Wei |
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| Affiliation: | (School of Automation Engineering,University of Electronic and Technology of China,Chengdu 611731,China) |
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| Abstract: | Embedded processor S3C2440 supports bootloader boot from both Nand Flash and Nor Flash,but U-Boot’s default booting device is Nor Flash.In order to support the boot from Nor Flash and Nand Flash in the U-Boot,according to the boot process of U-Boot in the S3C2440 processor and the difference that U-Boot boots from Nor Flash and Nand Flash,the Nand Flash drive that it can support both Nor Flash and Nand Flash boot is added.Based on this,the process of U-Boot booting the Linux kernel is analyzed and finally implemented.The U-Boot source code is correctly compiled in the cross-compiler.It can support both Nor Flash and Nand Flash boot,properly boot the Linux kernel and run stably in the hardware platform based on S3C2440 processor. |
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| Keywords: | S3C2440 U-Boot double boot Linux kernel |
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