System for booting from a non-XIP memory utilizing a boot...

Details System for booting from a non-XIP memory utilizing a boot... System for booting from a non-XIP memory utilizing a boot...

2009-05-22

2011-11-22

Duncan, Marc (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C713S002000

Reexamination Certificate

active

08065563

ABSTRACT:
A booting system includes: a non-XIP memory, for storing a plurality of booting images, wherein the booting images comprise a source image and a plurality of duplicates of the source image; an XIP memory, coupled to the non-XIP memory; and a code shadowing module, coupled to the non-XIP memory and the XIP memory, for shadowing a specific booting image to the XIP memory if no errors are detected when carrying out error detection (EDC) checking on the specific booting image; wherein if at least a specific part of a booting image does not pass EDC checking, the code shadowing module shadows error-free parts of the booting image to the XIP memory, carries out EDC checking on at least a duplicate of the specific part, and then shadows an error-free part corresponding to the specific part to the XIP memory.

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