Configuration logic for embedded software

Details Configuration logic for embedded software Configuration logic for embedded software

2007-12-25

2007-12-25

Beausoliel, Robert (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S025000, C714S027000, C714S028000, C714S031000, C714S045000, C716S030000, C716S030000

Reexamination Certificate

active

10850123

ABSTRACT:
An integrated circuit such as an FPGA containing an embedded processor having test circuitry capable of controlling the processor's resources using JTAG commands includes a formatting circuit that formats soft data received from an external storage device into a JTAG-compatible bitstream that can be used by the processor's test circuitry to access and/or control the processor's resources at any time, thereby allowing the embedded processor's resources to be accessed and controlled during FPGA configuration operations before the processor has been initialized to an operational state without using an external configuration tool. For some embodiments, the formatting circuit is a state machine that formats soft data such as firmware code, software programs, processor commands, and the like received from the external storage device into a JTAG-compatible bitstream that can be loaded into and/or used to access the resources of the embedded processor via the processors' test circuitry.

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