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SMM and BIOS: Insights for x86 Systems by Roei Zohar is a document available to read on EtoBox.

What is SMM and BIOS: Insights for x86 Systems about?

The document discusses System Management Mode (SMM), a privileged operating mode in x86 processors that is used for low-level hardware control and power management. SMM can only be entered through a System Management Interrupt (SMI) and runs transparently to the operating system. Common triggers for SMIs include I/O writes to ports 0xB2 and 0xB3 for Advanced Power Management (APM) and periodic SMIs. Once in SMM, the SMI handler code executes from BIOS flash to perform tasks like power monitoring before retu

Author

Roei Zohar

Language

EN