System and method for securing embedded controller communications by providing a security handshake
US9792437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2014 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | May 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/034
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information handling system includes a processor operable to receive a system management interrupt, and an embedded controller coupled to the processor via a primary interface and via a system management interrupt interface. The embedded controller receives a command to enable address decoding from the processor via the primary interface, sends the system management interrupt via the system management interrupt interface in response to receiving the command, and receives an indication from the processor via the primary interface, the indication including a determination if the processor was operating in a system management mode when the processor sent the command.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.