Executing large device firmware programs

Details Executing large device firmware programs Executing large device firmware programs

2005-06-21

2005-06-21

Elmore, Stephen (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S103000, C711S154000, C711S170000, C713S001000, C713S002000, C710S008000, C710S010000, C710S062000, C710S306000

Reexamination Certificate

active

06910113

ABSTRACT:
A processor-based system includes a system firmware program (e.g., the system basic input/output system (BIOS)) to execute a device firmware program (e.g., a device driver) stored on a storage device (e.g., an expansion read-only-memory (ROM)). For execution, the processor-based system uses a system memory including a designated region intended for storing the device firmware program. The system firmware program determines whether the device firmware program exceeds the capacity of the designated region. And, if so, the system firmware program stores the device firmware program in the designated region and at least one another location in the system memory thus supporting larger expansion ROMs on some platforms.

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Shanley et al., “PCI System Architecture, 3rd Edition,” Chapter 17: Configuration Registers, and Chapter 18:Expansion ROMs, pp 329-378, MindShare, Inc., 1995.

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