FPGA automatic downloading and on-line upgrading process

Abstract

The invention discloses a method for realizing automatic downloading and online upgrade for FPGA, wherein, the method for realizing automatic downloading for FPGA includes the following steps: a downloading bus interface of the FPGA is connected with a general programmable input/output interface of a CPU; a downloading mode of the FPGA is set; the CPU reads out downloading program from a non-volatile memory device through a Flash bus; the CPU writes the downloading program which is read out to the FPGA through a signal bus of the general programmable input/output interface until the downloading is completed. The invention can realize the automatic downloading of the FPGA program without configuring a special memory chip, and can realize the online upgrade of the FPGA program by using a general network interface.

Description

technical field [0001] The invention relates to network security and networking technology, in particular to a method for realizing FPGA automatic download and online upgrade. Background technique [0002] FPGA (Field Programmable Gate Array, Field Programmable Gate Array) chips have been used in the field of scientific research and communication for a long time. Compared with other ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit) chips, it has a short design and development cycle and low design and manufacturing costs. Low cost, flexible development, and easy product replacement. Because the application of FPGA has the above advantages, it is more and more widely used in communication products. However, since the FPGA is not a solidified chip, and the program in the memory will be lost after power-off, every time the FPGA is powered on, it needs to download the program before it can work normally. At present, FPGA download methods ar...

AI Technical Summary

Problems solved by technology

However, first of all, the cost of the product is increased; secondly, when the FPGA logic program needs to be updated, it still needs to be downloaded through a dedicated interface, which is inflexible

[0005] It can be seen that for the three existing FPGA download methods, there are certain restrictions and inconveniences in the product implementation.

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