Computer system including a main processor and a bound security coprocessor

A computer system (100) includes a main processor (10) and a security control processor (20) that is coupled to the main processor and configured to control and monitor an operational state of the main processor. To ensure the computer system may be trusted, the security control processor may be con...

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Bibliographische Detailangaben
Hauptverfasser: HILLMAN GARTH D, STRONGIN GEOFFREY S, FINDEISEN RALF, RAWSON ANDREW R, SIMPSON GARY H
Format: Patent
Sprache:chi ; eng
Schlagworte:
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Beschreibung
Zusammenfassung:A computer system (100) includes a main processor (10) and a security control processor (20) that is coupled to the main processor and configured to control and monitor an operational state of the main processor. To ensure the computer system may be trusted, the security control processor may be configured to hold the main processor in a slave mode during initialization of the security control processor such that the main processor is not operable to fetch and execute instructions from an instruction source external to the main processor, for example. In addition, the security control processor may be configured to initialize the operational state of the main processor to a predetermined state by transferring to the main processor via a control interface (26) one or more instructions and to cause the main processor to execute the one or more instructions while the main processor is held in the slave mode.