CPLD (Complex Programmable Logic Device) non-inductive upgrading method and system, storage medium and equipment

Abstract

The invention provides a CPLD non-inductive upgrading method and system, a storage medium and equipment, and the method comprises the steps: setting a non-inductive upgrading enabling signal in a server, configuring the non-inductive upgrading enabling signal to be effective when a PG signal and a control signal are high at the same time, and enabling the control signal to be low by default; the server is started and powered on, the CPLD controls the power-on time sequence, a PG signal is pulled up, and the BMC monitors and judges the state of the server; in response to monitoring that the server enters the startup state, the BMC pulls up the control signal through i2c, so that data in a flash of a CPLD chip is refreshed according to an upgrading requirement, and the CPLD records key data in UFM; the BMC sends a reloading instruction to execute CPLD upgrading, and the CPLD latches the pin voltage to maintain the power-on state of the server; and in response to the completion of the reloading execution, the CPLD recovers the key data from the UFM and releases the pin voltage latch. According to the invention, the reliability and the executability of the CPLD non-inductive upgrading are optimized.

Description

technical field [0001] The invention relates to the technical field of servers, in particular to the technical field of server control systems, and in particular to CPLD upgrade in the server control system. Background technique [0002] CPLD (Complex Programmable logic device, complex programmable logic device) as a programmable logic device is widely used in server control systems, responsible for power switch control, power-on sequence control, abnormal monitoring, and implementation of low-speed bus protocols such as: i2c (simple bidirectional two-wire) synchronous serial bus), SGPIO (Serial General-purpose input / output, serial general-purpose input / output), eSPI (Enhanced Serial Peripheral Interface bus) and other functions. In the process of using the server, it is inevitable to upgrade the CPLD code. How to ensure that the server does not lose power and the business does not need to be interrupted during the process of upgrading the CPLD is a problem that the technici...

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Problems solved by technology

[0012] In view of this, the object of the present invention is to propose an improved CPLD non-inductive upgrade method, system, storage medium and equipment, thereby solving the problem that the non-inductive upgrade function will fail due to the loss of control of the hitless_en signal of the BMC in the prior art. Mis-triggering of the non-inductive upgrade function leads to abnormal power-on of the server, and abnormalities in user services due to clearing of registers, etc.

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