摘要
U-Boot不能从NAND Flash启动给应用带来些不便,因此修改U-Boot使其支持从NAND Flash启动。分析了U-Boot启动流程的两个阶段及实现从NAND Flash启动的原理和思路,并根据NAND Flash的物理结构和存储特点,增加U-Boot对NAND Flash的操作支持,从而完成把存储在NAND Flash上的U-Boot代码复制到SDRAM中执行,实现从NAND Flash的启动。修改过后的U-Boot可以直接从NAND Flash启动,给应用带来便利。
It is not convenient that U-Boot can＇t boot through NAND Hash. In this paper,the codes of U-Boot is modified to support that. This paper analyzes two steps of U-Boot and the method of supporting that the U-Boot boots from NAND Flash. Based on the memory characteristics and the physical structure of NAND Flash,this paper adds the codes of NAND Flash in order to carry the codes to SDRAM that stored in the NAND Flash,thus realizes U-Boot boots from NAND Flash. The modified U-Boot runs through NAND Flash straightly ,it is a great convenience to the application of U-Boot.
出处
《电子设计工程》
2010年第5期98-100,共3页
Electronic Design Engineering
