Peripheral component interconnect express (pcie) device add-on card detection
AssigneeHewlett-Packard Development Company, L.P.
InventorsMing-Chang Hung, Chia-Cheng Lin, Tai-An Lin, Tsue-yi Huang
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Abstract
The present specification describes a method. The method including: detection of at least one General Purpose Input Output (GPIO) pin on a Peripheral Component Interconnect Express (PCIe) device; and presenting, on the at least one GPIO pin, during a Basic Input Output System (BIOS) phase prior to a DXE phase, a signal indicating a presence of a card on the PCIe device.
Claims15
A method comprising:
- detecting at least one General Purpose Input Output (GPIO) pin on a Peripheral Component Interconnect Express (PCIe) device;
- and
- presenting, on the at least one GPIO pin, during a Basic Input Output System (BIOS) phase prior to a Driver Execution Environment (DXE) phase, a signal indicating a presence of a card attached to the PCIe device.
A Peripheral Component Interconnect Express (PCIe) device comprising:
- a card to be attached to the PCIe device;
- and
- a General Purpose Input Output (GPIO) pin comprising, during a Power On Self Test (POST) phase of a BIOS, a datum indicating the card is attached to the PCIe device.
A method of allocating resources to support a card on a Peripheral Component Interconnect Express (PCIe) device, comprising:
- during a pre-Extensible Firmware Interface (EFI) Initialization (PEI) phase of a Basic Input Output System (BIOS), detecting a presence of a card inserted into the PCIe device based on a signal received from a General Purpose Input Output (GPIO) pin;
- and
- loading a first set of instructions based on detecting the GPIO pin on the PCIe device.
Dependencies are inferred from the claim text.