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Embedded control system for computers and updating method of embedded control system

An embedded control and embedded controller technology, applied in the field of information security, can solve problems such as changing EC functions and threatening computer security

Active Publication Date: 2013-08-21
CHINA INFORMATION TECH SECURITY EVALUATION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to facilitate the update of EC firmware, the computer usually adopts the method of online download to upgrade the EC firmware, and most EC upgrade processes do not check the validity of the upgrade operation, and do not check the credibility of the upgrade data, so incorrect or illegal EC firmware Upgrading will change the function of EC and threaten the security of the computer

Method used

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  • Embedded control system for computers and updating method of embedded control system
  • Embedded control system for computers and updating method of embedded control system
  • Embedded control system for computers and updating method of embedded control system

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Embodiment approach

[0050] In order to achieve the above object, the technical solution of the present invention is specifically realized in the following way. 1. The implementation plan of the hardware design is as follows:

[0051] The embedded controller uses Winbond's WPC8769 chip;

[0052] Display output device: choose red, green and yellow three-color one-bit digital tube indicator light, when the correct information is returned, it will display green, and cooperate with the corresponding number; when returning the final serious error information, it will display red, and cooperate with the corresponding number number; when it is in the update process, it will display yellow; when it is requested to press the confirmation button, the flashing frequency is 2 times / second, with an interval of 1 second;

[0053]

[0054]

[0055] Update operation input device: select hard disk;

[0056] Update operation confirmation device: button;

[0057] The computer adopts X86 architecture;

[00...

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Abstract

The invention discloses an embedded control system for computers and an updating method of the embedded control system and relates to the field of information safety. An EC (embedded controller) is independent from a tablet computer CPU (central processing unit) and generally used for controlling equipment starting time sequence and controlling power switches of various devices and can realize system power management, component power management, CPU power management, component and CPU power effect management, battery management and heat effect management and the like. In order to simplify design and save cost, existing tablet computers directly update hardware of the EC through upper software, but upgrading operation is not subject to validity inspection and upgrading data are not subject to credible inspection in most EC upgrading processes, so incorrect or illegal EC hardware upgrading can change functions of the EC and threatens safety of the tablet computers. After modification, a safe and credible operation method for updating hardware of the embedded controller is implemented in the hardware environment of the embedded controller updating system, and safety and reliability of the hardware of the embedded controller are guaranteed.

Description

technical field [0001] The invention relates to the field of information security, and specifically proposes a novel method for updating an embedded controller system of a computer. Background technique [0002] Computer power management and power consumption control technology appeared in the early 1990s. The original power management was mainly limited to the clock management of the CPU and simply cutting off the power supply. Such power management often causes conflicts with the operating system and applications, thus cause the system to crash. [0003] With the development of technology, a control chip used to control functions such as keyboard input, power consumption, and clock management is independently developed in the computer. This new chip is usually called a motherboard control chip (Embeded Controler, EC). Since the motherboard control chip is independent of the computer CPU, it is usually used to control the startup sequence of the equipment and control the p...

Claims

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Application Information

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IPC IPC(8): G06F9/445G06F21/30
Inventor 毛军捷张翀斌张宝峰郭颖饶华一吴毓书李凤娟许源谢仕华
Owner CHINA INFORMATION TECH SECURITY EVALUATION CENT
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