Method and apparatus for modifying the contents of revision identification register
AssigneeIntel Corporation
InventorsRajeev K. Nalawadi, Faraz A. Siddiqi
Life of this patent
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Abstract
An embodiment for modifying the contents of a revision identification register includes a revision identification register that is both readable and writable (the contents of the revision identification register are modifiable). A revision identification modification bit is also included. The contents of the revision identification register are only modifiable when the revision identification modification bit is set to indicate that writes to the revision identification register will be accepted.
Claims22
An apparatus, comprising:
- a revision identification register that allows modification of the revision identification register contents.
A method, comprising:
- determining whether a current revision identification value stored in a revision identification register indicates a first device stepping;
- and
- replacing the current revision identification value with a revision identification value that indicates the first device stepping if the current revision identification value does not indicate the first device stepping.
A method, comprising:
- executing a pre-operating system software agent, the pre-operating software agent to determine whether to modify a value stored in a revision identification register;
- modifying the value stored in the revision identification register;
- and
- loading an operating system.
A machine-readable medium having stored thereon instructions which, when executed by a computer system, causes the computer system to perform a method comprising:
- determining whether a current revision identification value stored in a revision identification register indicates a first device stepping;
- and
- replacing the current revision identification value with a revision identification value that indicates the first device stepping if the current revision identification value does not indicate the first device stepping.
A machine-readable medium having stored thereon instructions which, when executed by a computer system, causes the computer system to perform a method comprising:
- executing a pre-operating system software agent, the pre-operating software agent to determine whether to modify a value stored in a revision identification register;
- modifying the value stored in the revision identification register;
- and
- loading an operating system.
A system, comprising:
- a processor;
- and
- a system logic device couple to the processor, the system logic device including
- a revision identification register that allows modification of the revision
- identification register contents.
Dependencies are inferred from the claim text.