Electrical computers and digital processing systems: support – Data processing protection using cryptography – Tamper resistant
Reexamination Certificate
2006-02-21
2006-02-21
Zand, Kambiz (Department: 2132)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
Tamper resistant
C713S172000, C713S182000, C726S034000
Reexamination Certificate
active
07003676
ABSTRACT:
A method and system for overriding access locks on secure assets in a computer system. The system includes a processor and a device coupled to the processor. The device includes one or more sub-devices, one or more access locks, and an access lock override register that stores one or more access lock override bits, including a lock override bit. The one or more access locks are configured to prevent access to the one or more sub-devices when the one or more access locks are engaged. Access to the one or more sub-devices is not allowed when the lock override bit is set. The method includes requesting a memory transaction for one or more memory addresses and determining a lock status for the one or more memory addresses. The method also includes returning the lock status for the one or more memory addresses. The method may determine if the lock status for the one or more memory address can be changed. The method may change the lock status of the one or more memory addresses to allow the memory transaction.
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Gulick Dale E.
Weber Frederick D.
Advanced Micro Devices , Inc.
Williams Morgan & Amerson
Zand Kambiz
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