PowerPC平台U-Boot移植的研究

he controller of boardband communications is one of the Linux embedded system equipment, which is based on the PowerPC platform. U-boot is the first running program after powering on the embeded board. U-boot performs the specific hardware initialization and set up the memory space and other tasks before the embeded operating system kernel image executes. After that it provides the boot parameters for the kernel and starts up the kernel. According to the hardware platform for high-speed data transmission based on MPC8555E processor, the paper analyzed U-boot's boot sequence, and then introduced porting process and ways on the system design of PowerPC platform. Focuses on the study of design for the U-boot reset, and the configuration of ddr's time parameters and registers. Finally completed the support of U-Boot for NAND and Ethernet driver.