Dual cpld mutual online backup upgrade method and business single board in communication system

Abstract

The invention provides a mutual online backup upgrade method for dual complex programmable logic devices (CPLD) in a communication system and a service single board. The communication system receivesa CPLD upgrade file sent by a remote upgrade control platform and a firmware program running in the CPLD; copying the CPLD upgrade file to a local storage, wherein the storage is positioned outside the CPLD to be upgraded; when the upgrade of one CLPD is abnormal, controlling an JTAG port of the CPLD which is failed to upgrade via an IO port of the other CPLD, and recovering the firmware code of the CPLD which is failed to upgrade to be the previous normal running version. The abnormal startup of the whole communication system caused by the failed upgrade of the CPLD unit can be successfully avoided, and thus a large area of system communication is interrupted.

Description

technical field [0001] The invention relates to a base station system of a wireless mobile communication product, in particular to a technical solution for mutual upgrade and backup processing of dual programmable logic devices in a communication system. Background technique [0002] With the continuous development of communication technology, the communication system becomes more and more complex, and multiple processors and multiple CPLDs need to be used in the hardware system. CPLD (complex programmable logic device, complex programmable logic device) is a digital integrated circuit that constructs logic functions according to user needs, and is widely used in various devices, such as single boards. As the system requires more and more reliability and security of equipment, if the CPLD has some defects in the program, or the user's needs change, it is necessary to upgrade the firmware program of the CPLD. [0003] At present, the Boot version and FPGA version of the proc...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of CPLD online upgrade success rate, there is currently a CPLD architecture that uses SRAM and on-chip flash to support online upgrades. However, due to the upgrade of CPLD logic files, it must be carried out carefully. If the write error occurs, it may cause serious damage Consequences, such as causing the business single board to fail to power on and start normally, single disk clock configuration, reset information configuration, localbus bus switching, synchronization information switching, SPI management, PCIE control signal management, etc., and front panel LED management and other configuration information will be abnormal

Moreover, in the current CPLD online upgrade solution, each hardware manufacturer mostly relies on the architecture provided by the chip manufacturer. This SDRAM+FLASH solution architecture needs to rely on the internal logic of the CPLD to a certain extent when implementing the CPLD online upgrade, and related The peripheral circuit processing modules must be designed for a specific manufacturer or even a certain type of chip. Its reliability, versatility and portability are checked, and its upgrade process is complicated.

And it is usually difficult to guarantee that the CPLD can run normally after the upgrade

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