Implementing a microprocessor boot configuration prom within...

Details Implementing a microprocessor boot configuration prom within... Implementing a microprocessor boot configuration prom within...

2006-03-03

2009-02-03

Elamin, Abdelmoniem (Department: 2116)

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

Loading initialization program

C713S001000, C703S014000, C703S021000, C703S023000, C703S024000, C703S028000

Reexamination Certificate

active

07487344

ABSTRACT:
A method and apparatus are provided for storing the boot configuration PROM of a microprocessor in an FPGA. The boot interface of the microprocessor, such as an I2C interface, leads to the FPGA instead of to a PROM. The boot configuration is stored as an image in the FPGA, and the microprocessor accesses the boot configuration using its normal boot interface. In this way, a dedicated boot PROM is not needed, saving real estate on the card on which the microprocessor is located. The boot configuration is also more easily modified, such as for version upgrades or diagnostics, than if the boot configuration were stored on a dedicated PROM. Different boot configurations may be stored as software images on a separate housekeeper processor, for loading into the FPGA.

REFERENCES:
patent: 7265578 (2007-09-01), Tang et al.
patent: 7287154 (2007-10-01), Puckette
patent: 2004/0093488 (2004-05-01), Horanzy

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