System and method for loading PowerPC system guide file through serial port

Abstract

The invention discloses a system and method for loading a PowerPC system guide file through a serial port. The method includes the steps of circuit board design of a loading scheme, logic implement of a CPLD and design of loading software of a PC end; after the requirements of the three modules are met, the file is sent to the CPLD through the serial port through the loading software at the PC end, and the file is programmed to a Norflash through the logic in the CPLD so that the system guide file loading can be completed. The invention provides the simple system loading method. The logic of Norflash programming is achieved on the CPLD instead of achieving a programming algorithm on the software of the PC end, and therefore the programming speed is ensured; meanwhile, due to the scheme, the software at the PC end can be quietly easily developed by reading the file to be loaded and then sending the file through the serial port according to the well-defined packaging data frame in the frame format. In addition, the system replaces a special simulator and a special programming environment, the loading process of the system guide file is simplified, and the debugging efficiency in the early period is improved.

Description

technical field [0001] The invention relates to a boot file loading method of a PowerPC (a performance-optimized enhanced reduced instruction set central processing unit), in particular to a system and a method for loading a boot file of a PowerPC system through a serial port. Background technique [0002] PowerPC is often used as the main CPU (central processing unit) of the system. The first stage of system startup is to complete the boot of the CPU system. In the past, the startup bin (binary) file of the PowerPC system was loaded through a dedicated emulator provided by the manufacturer. The use of a downloader is not only expensive, but also needs to install the corresponding debugging software on the PC. After the debugging software is installed, it is necessary to set and adjust the relevant parameters of the debugging environment according to the hardware design scheme, and because the emulator does not allow thermal Plug operation, so the environmental require...

AI Technical Summary

Problems solved by technology

For the boxed whole system, such an interface is obviously inconvenient to use. Since a dedicated emulator is required, as long as the system boot is damaged, it is necessary to disassemble the case, remove the single board and plug in the emulator to re-boot the code. loading, this operation process is not only cumbersome but also inefficient

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