Method for firmware variable storage with eager compression, fail-safe extraction and restart time compression scan
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United States of America Patent
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Apr 26, 2011
Grant Date -
Feb 8, 2007
app pub date -
May 26, 2004
filing date -
Jun 16, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Firmware-based conversion methods for storing converted firmware variables in a firmware storage device, such as flash memory. Under one method, “eager” compression of firmware is performed. In response to a storage request, a determination is made to whether a compressor is available. If it is, the firmware variable is stored in a compressed form in the storage device; if not, the firmware variable is stored in an uncompressed form. In response to a read request for a stored firmware variable, a determination is made to whether the variable is stored in a compressed or uncompressed form. If it is compressed, a decompressor is employed to return the variable to its uncompressed form prior to providing it to the requestor; already uncompressed variables are provided directly to the requester. An application program interface is provided to enable operating system runtime access to the firmware variables. Similar conversions may be employed separately or in parallel, including encryption.
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