Recovering from compromised system boot code
US9880908B2 · kind B2 · utility
10Cited by
27References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2013 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Jun 2, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S40/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a state of a system in which a processor of the system is not accessing a first memory, a controller in the system determines whether system boot code from the first memory in the system is compromised, wherein the first memory is accessible by the processor and the controller over a bus. In response to determining that the system boot code is compromised, the controller retrieves system boot code from a second memory in the computing device to replace the system boot code in the first memory, where the second memory is electrically isolated from the bus and is inaccessible by the processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.