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3
3
BIOS
This chapter provides a description of the BIOS on the CPIP5430.
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CPIP5430 BIOS Overview
The CPIP5430 BIOS software supports all of the IBM /AT standard
functions and several board-specific functions and features. Features of the
CPIP5430 BIOS include an easy-to-navigate setup engine and help
windows.
Upon initial power up or after a hardware reset the processor begins
executing code out of the onboard BIOS. The BIOS contains all of the
software needed to boot the board to a working state so an operating
system can be loaded. The first order of business for the BIOS is to
initialize crucial system components, such as timers and chipset parts. The
BIOS then performs basic component checks to ensure their presence and
then sets them to a default state. Next, the cache and memory controllers
must be initialized and configured for the type and configuration of the
cache and memory found in the system. Once the memory has been