Mainboard, firmware safety detection method and terminal equipment
A firmware and motherboard technology, applied in the computer field to ensure the safety of equipment
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Embodiment 1
[0032] figure 1 A schematic structural diagram of a mainboard provided by an embodiment of the present application is shown. For convenience of description, only the part related to the embodiment of the present application is shown.
[0033] The mainboard 1 includes a complex programmable logic device (Complex Programmable Logic Device, CPLD) 11 and a Basic Input Output System (Basic Input Output System, BIOS) firmware 12 .
[0034] Mainboard (Motherboard, Mainboard, Mobo), also known as mainboard, system board, logic board, motherboard, backplane, etc., is the center or main circuit board that constitutes a complex electronic system such as an electronic computer. The CPLD of the motherboard is responsible for controlling the power-on sequence of the motherboard. After the motherboard receives the user's power-on command and turns on the power, the CPLD powers up each chip in the motherboard to start each chip, including powering on the BIOS firmware to instruct the BIOS fir...
Embodiment 2
[0065] figure 2 It shows a schematic diagram of the implementation flow of the first firmware security detection method provided by the embodiment of the present application. The method is applied to CPLD, and is described in detail as follows:
[0066] In the embodiment of the present application, the CPLD is connected to the BIOS firmware through the first pin. When the main board receives the power-on command to power on, the first pin is initialized to a high level, and the main board sends the first command to the CPLD to instruct the CPLD to start power-on.
[0067] In S201, a first instruction is received to start powering on, and a second instruction is sent to instruct BIOS firmware to start.
[0068] The CPLD receives the first instruction to start power-on, and immediately sends the second instruction to instruct the BIOS firmware to start, and at the same time starts power-on reset of other chips on the main board according to the preset power-on sequence, that is...
Embodiment 3
[0089] image 3 It shows a schematic diagram of the implementation flow of the second firmware security detection method provided by the embodiment of the present application. The method is applied to BIOS firmware and is described in detail as follows:
[0090] In the embodiment of the present application, the BIOS firmware is connected to the CPLD through the first pin, and the first pin is initialized to a high level when the motherboard receives a power-on command and is powered on.
[0091] In S301, receiving the second instruction sent by the CPLD to start the local terminal, and setting the level of the first pin to low level, so as to notify the CPLD that the current BIOS firmware is valid firmware.
[0092] The BIOS firmware in the embodiment of the present application is specifically the legitimate firmware with the first target program preset. When the BIOS firmware receives the second instruction sent by the CPLD, it starts the startup process of the local end, and...
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