Alternative boot path support for utilizing non-volatile memory devices
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United States of America Patent
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Oct 6, 2015
Grant Date -
Apr 3, 2014
app pub date -
Sep 28, 2012
filing date -
Sep 28, 2012
priority date (Note) -
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Abstract
Embodiments of the invention describe apparatuses, systems and method for particularly to providing alternative boot paths for computing devices. In embodiments of the invention, a non-volatile controller subsystem is powered up by default in order to allow memory operations to one or more non-volatile devices prior to PCIe/USB enumeration. Logic such as a system SPI controller receives a request to access an SPI flash device for executing a firmware image instruction; however, embodiments of the invention either do not include or do not utilize an SPI flash device. Instead of notifying an SPI flash device, the host SPI controller redirects this request to the non-volatile controller subsystem. The non-volatile controller accesses one or more non-volatile device(s) for executing the firmware image instruction. Furthermore, embodiments of the invention may also support the protection of storage operations initiated from the host controller to the non-volatile device from hardware attacks.
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