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Method and apparatus for synchronizing firmware
| Details |
Inventors: Northcutt, J. Duane; Wall, Gerard A.; Hanko, James G.; Stoltz, Benjamin H.;
Assignee: Sun Microsystems, Inc. (Palo Alto, CA)
Primary Examiner: Alam; Hosain T.
Assistant Examiner: Nguyen; Thu Ha
Attorney, Agent or Firm: O'Melveny & Myers LLP
The invention is a method and apparatus for synchronizing firmware associated with a first computer device and a second computer device, such as a server and a client computer. In accordance with one embodiment of the invention, the method comprises the steps of providing information regarding a characteristic of the firmware associated with the first and second devices, comparing the provided firmware information to determine if the firmware is synchronized, and associating new firmware with the second device to synchronize the firmware if the firmware is found to not be synchronized in the comparing step. In one or more embodiments of the invention, the firmware associated with the second device is not modified unless the integrity of the firmware to be installed on the second device is verified using a digital signature. |
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DETAILED DESCRIPTION The invention is a method and apparatus for synchronizing firmware, such as versions of software, associated with a first computer device and a second computer device.
In accordance with one embodiment of the invention, the method comprises the steps of transmitting information regarding a characteristic of the firmware associated with the first device from the first device to the second device, comparing the firmware information transmitted from the first device to information regarding the same characteristic of the firmware associated with the second device, and associating new or different firmware with the second device if the characteristics associated with the firmware of the first and second devices are not the same to thereby synchronize the firmware associated with the two devices.
In accordance with one or more embodiments of the invention, in the event the firmware associated with the second device is not the same as that of the first device, then the firmware associated with the second device is modified to match or synchronize with that of the first device by loading updated firmware to the second device.
In accordance with one or more embodiments of the invention, updated firmware is not installed onto the second device until the integrity of the updated firmware is verified.
This prevents the introduction of unwanted code, such as a virus, untrusted code, or other unauthorized code to the system.
In one embodiment, the firmware to be installed to the second device comprises a load module having a private key associated therewith and the step of verifying comprises using a public key to verify the private key.
In accordance with one or more embodiments of the invention, the first device is a server which is capable of providing services to a number of interface devices, and the second device comprises one of such interface devices.
In accordance with one embodiment, the second device includes a memory element onto which the firmware is loaded and a read-only memory area which includes emergency firmware for ensuring the device is not rendered inoperative in the event updated firmware is not properly or completely installed
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File Sharing 
