Enabling SPI firmware updates at runtime

Enabling SPI firmware updates at runtime

SPI firmware updates can be performed at runtime. A secure SPI flash access domain can be created during pre-boot and used at runtime to deliver and write a SPI firmware update to SPI flash. The secure SPI flash access domain can ensure that only a trusted component running on a trusted CPU core can...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Suryanarayana, Shekar Babu, Joshi, Anand Prakash
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:SPI firmware updates can be performed at runtime. A secure SPI flash access domain can be created during pre-boot and used at runtime to deliver and write a SPI firmware update to SPI flash. The secure SPI flash access domain can ensure that only a trusted component running on a trusted CPU core can access a SPI memory layout used to deploy the SPI firmware update to the SPI flash. Once the SPI firmware update is written to the SPI flash, a reboot can be triggered so that the updated SPI firmware is loaded to perform the boot process.