Device and method for dynamically upgrading complex programmable logic device (CPLD)

Abstract

The invention discloses a device and a method for dynamically upgrading a complex programmable logic device (CPLD), wherein a service one-board processor acquires background CPLD version information from a remote background network management platform and compares the background CPLD version information with the version information of the CPLD operating in the single board and the working version information saved in an on-chip FLASH user data area; if the background CPLD version information is inconsistent with the version information of the CPLD operating in the single board and the working version information saved in the on-chip FLASH user data area, a version downloading process is carried out, the acquired background CPLD version file is written in an on-chip FLASH working version area of a CPLD chip, and the working version information of the user data area is updated; and a version loading module of a logic unit is upgraded on line, and the background CPLD version is acquired from the working version area for loaded according to a command for switching and loading the working version. The invention has simple circuit, only an on-chip FLASH of the CPLD is utilized, other tasks of the service processor can be normally executed in the on-line upgrading process, and version switching can be completed quickly.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a complex programmable logic device CPLD dynamic upgrading device and method for a communication service single board. Background technique [0002] In the communication system, a large number of firmware versions are used, such as the BOOT version of the processor, the CPLD (Complex Programmable Logic Device, complex programmable logic device) logic version and the FPGA (Field Program Gates Array, field programmable logic gate array) logic version Wait. These firmware versions are often not static, and need to be upgraded when customers request new functions or some defects appear. [0003] At present, the BOOT version and the FPGA logic version are relatively easy to implement online upgrades, but the CPLD logic files need to be burned with a dedicated cable, and the download cables of different manufacturers are not the same, which brings great difficulties to the field...

AI Technical Summary

Problems solved by technology

However, due to the upgrade of the CPLD logic file must be carried out very carefully, if it is wrongly written, it may cause serious consequences, such as damage to the business board or cause the business board to fail to power on and start normally

[0005] In an existing CPLD upgrade solution, an interface controller is required to control the upgrade process, but this increases the circuit complexity of the device; in addition, it is required that the service processor is not interrupted by other tasks, processes or interruptions during the upgrade of the CPLD This will inevitably lead to a long time to affect the business during the upgrade process

Images