Intel Corporation

Yuanyuan Xing

Vincent J Zimmer

Michael A Rothman

Xiaogang Gu

In some embodiments, the invention involves efficiently boot and resume a machine from a low power state. In at least one embodiment, the present invention saves the processor state(s) in a buffer that allows fast access upon a resume from sleep mode. When a sleep (S3 mode) is initiated in a platform, processor state context is saved in a system reserved buffer that does not allow access to the operating system. The firmware (EFI) has access to the buffer and upon a resume, the processor context(s) are restored from a fast buffer. Other embodiments are described and claimed.

Processor state restoration and method for resume

In some embodiments, the invention involves a system and method for fast resume from sleep mode. Reserved cache memory is used to store drivers and configuration variables. Upon resume, the drivers and configuration are read from the ACPI reserved cache memory and executed in memory rather than read from slower flash or CMOS memory. Other embodiments are described and claimed.

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Shanghai, China

Yuanyuan Xing