Extending a root complex to encompass an external component
US10789370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2017 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | Jan 18, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/04
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In accordance with embodiments disclosed herein, there is provided systems and methods for extending a root complex to encompass an external component. A processor includes a processor core and root complex circuitry coupled to the processor core. The processor core is to execute a basic input/output system (BIOS) and an operating system (OS). The root complex circuitry includes a coherent interface port and a downstream port. The root complex circuitry is to couple to an external component via the downstream port and the coherent interface port. The BIOS, to extend a root complex beyond the root complex circuitry to encompass the external component, is to obfuscate the downstream port from the OS, define a virtual root bridge for the external component, and enable a security check at the external component to provide protection for the coherent interface port and the downstream port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.