Method and apparatus for securing add-in cards from firmware and configuration changes
US10990680B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2018 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Apr 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1433
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information handling system includes a memory to store BIOS, a processor, a BMC, and an add-in device. The BMC updates the BIOS in a first system state and prevents BIOS updates in a second system state. The add-in device is configured to update firmware in a first device state and to prevent firmware updates in a second device state. The add-in device enters the first device state when the add-in device receives a power-on reset. The add-in device receives a lockdown command, sets the add-in device to the second device state in response to the lockdown command, and prevents the add-in device from reentering the first device state until the add-in device receives a second power-on reset subsequent to the first power-on reset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.