System and method for securing embedded controller communications by verifying host system management mode execution
US9418223B2 · kind B2 · utility
2Cited by
5References
20Claims
0Family size
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Key dates
| Filing date | Apr 22, 2014 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Feb 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/74
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information handling system includes a processor operable to provide a branch trace message, and an embedded controller coupled to the processor via a primary interface and via a management interface. The embedded controller receives a management transaction from the processor via the primary interface. In response to receiving the management transaction, the embedded controller requests the branch trace message via the management interface and determines if the processor is operating in a system management mode based upon the branch trace message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.