Setting a PCIE Device ID

摘要

One embodiment of the present invention includes a hard-coded first device ID. The embodiment also includes a set of fuses that represents a second device ID. The hard-coded device ID and the set of fuses each designate a separate device ID for the device, and each device ID corresponds to a specific operating configuration of the device. The embodiment also includes selection logic to select between the hardcoded device ID and the set of fuses to set the device ID for the device. One advantage of the disclosed embodiments is providing flexibility for engineers who develop the devices while also reducing the likelihood that a third party can counterfeit the device.

主权项

1. A system configured for setting a device identification (ID) for a device, the system comprising:
a hard-coded first device ID; a set of fuses that is set with a second device ID; first level selection logic that selects between the hard-coded first device ID and the second device ID associated with the set of fuses to designate a selected device ID for the device; and second level selection logic that selects between the selected device ID and a rebranded third device ID associated with an updated version of the device, wherein the hard-coded device ID, the set of fuses, and the rebranded third device ID each designates a separate device ID for the device, and each separate device ID corresponds to a specific operating configuration of the device.