介绍了在Xilinx K7上运用MicroBlaze软核程序,详细介绍了在Vivado软件配置BPI FLASH启动方式以及在SDK搭建Bootloader程序逻辑设计流程和软件设计,并包含Bootloader程序备份。该程序是在FPGA硬件配置完毕之后,在MicroBlaze上运行的一段启动代码,用来将BPI FLASH中的用户程序搬运至DDR,并引导嵌入式系统从用户程序开始运行,可在第一份启动代码校验出现故障时自动运行备份Bootloader程序。该设计方案解决了在复杂的MicroBlaze程序中占用FPGA内部BRAM资源和启动安全问题,已在现有不同项目中应用,具有较好的通用性和适应性。
Abstract
In the paper,the application of MicroBlaze soft core program on Xilinx K7 is introduced,and the configuration of BPI FLASH startup mode in Vivado software and the logic design process and software design of bootloader program in SDK are introduced,including the backup of Bootloader program.This program is a startup code running on MicroBlaze after FPGA hardware configuration is completed.It is used to transport the user program in BPI FLASH to DDR and guide the embedded system to run from the user program.When the first startup code verification fails,it can automatically run the backup Bootloader program.The design scheme solves the problems of occupying FPGA internal BRAM resources and startup security in complex MicroBlaze program.It has been applied in different existing projects and has universality and adaptability.
关键词
MicroBlaze /
Bootloader /
BPI FLASH /
启动备份
Key words
MicroBlaze /
Bootloader /
BPI FLASH /
start backup
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