Multi-mode startup safety embedded system

An embedded system and multi-mode technology, applied in computer security devices, instruments, electrical digital data processing, etc., can solve problems such as security information leakage, and achieve the effect of ensuring security, ensuring security, and improving security

Active Publication Date: 2010-10-13
苏州国芯科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the chip stores sensitive information or codes in a certain mode, and the chip can obtain these sensitive information or codes from another mode, this will obviously cause the leakage of security information

Method used

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  • Multi-mode startup safety embedded system
  • Multi-mode startup safety embedded system
  • Multi-mode startup safety embedded system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Embodiment: A kind of safe embedded system that multi-mode starts

[0038] figure 1 It is a schematic diagram of the safety embedded system started by multi-mode in the embodiment of the present invention, from figure 1 It can be seen that the system has the following components:

[0039] 1. The CPU 105 serves as the control and execution unit of the embedded system.

[0040] 2. The start-up mode selection signal 104 is used for the embedded system to select any one of the start-up modes from the start-up mode selection signal end.

[0041] 3. The start-up mode control register 101 , which is connected to the start-up mode selection signal 104 and used to map the information obtained by the start-up mode selection signal 104 .

[0042] 4. Each functional module is composed of the following functional modules:

[0043] (1) The JTAG controller 107 is used to implement the software program debugging function during development. When performing system development on the...

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PUM

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Abstract

The invention discloses a multi-mode startup safety embedded system for ensuring the embedded system to safely enter a mode designated by a user when carrying out the multi-mode startup. The system judges the startup mode of the system according to safety feature values in a safety feature controller after being switched on, if the safety feature controller does not saves the safety feature values, the startup mode of the system is selected according to a startup mode selection signal and a startup mode control register. The different safety feature values can set the different safety levels for the startup way of the embedded system. The multi-mode startup safety embedded system can not only be used for realizing the multi-mode startup of the embedded system, but also ensure the safety offirmware and hardware in the system at the work mode which needs to be protected, thereby being applicable to the prior multi-application of the embedded system and also taking into account of the demands on the safety.

Description

technical field [0001] The present invention relates to an embedded microprocessor application system (abbreviated as "embedded system"), in particular to a multi-mode start-up safe embedded system. The system can ensure that the embedded system enters the user-specified mode safely when the multi-mode boot is performed. Background technique [0002] With the development of integrated circuit design, more and more functions are integrated on a single chip, and the functions of a single chip are becoming more and more powerful. The same chip can be made to work in different modes as long as its startup mode is changed and the corresponding working voltage or clock is configured. In this case, the same chip can be configured as a chip for a SIM card used in daily mobile phones or as a control chip for a U disk according to different applications. The multi-mode application of the chip greatly expands the application range of the same chip, and also prolongs the life cycle of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/02G06F21/50
Inventor 王忠海林雄鑫肖佐楠郑茳
Owner 苏州国芯科技股份有限公司
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