Design and Optimization of Bootloader Based on "Steppingstone"

In embedded system,Bootloader plays an important part on loading and booting the operating system mirror image.It often runs on NOR FLASH with XIP characteristic.Based on an internal SRAM buffer called Steppingstone,a bootloader booted from NAND FLASH,which initializes the processor′s function block,is designed and realized on the hardware platform with the core of SAMSUNG S3C2440A embedded microprocessor.Several methods,such as downloading through serial port,are used to improve debugging process,which enhance the platform development speed,enormously facilitate development personnel′s research and development work.