System-on-a-chip (SoC) security using one-time programmable...

Details System-on-a-chip (SoC) security using one-time programmable... System-on-a-chip (SoC) security using one-time programmable...

2007-12-10

2011-10-25

Tran, Vincent (Department: 2115)

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

Loading initialization program

C713S001000, C713S100000, C713S176000

Reexamination Certificate

active

08046571

ABSTRACT:
Apparatus having corresponding methods and computer programs comprise: a processor; a test interface that is in communication with the processor only when the test interface is enabled; a first one-time-programmable (OTP) memory; and a non-volatile memory to store boot code for the processor, wherein when the processor is booted, the boot code causes the processor to test the first OTP memory; wherein the boot code causes the processor to enable the test interface when the first OTP memory has not been programmed; and wherein the boot code causes the processor to disable the test interface when the first OTP memory has been programmed.

REFERENCES:
patent: 6622184 (2003-09-01), Tabe et al.
patent: 2005/0099832 (2005-05-01), Becker
patent: 2005/0105331 (2005-05-01), Lee et al.
patent: 2007/0064497 (2007-03-01), Louie et al.
patent: 2007/0094507 (2007-04-01), Rush
patent: 2009/0222652 (2009-09-01), Khan et al.

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