Secure system firmware by disabling read access to firmware ROM
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United States of America Patent
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Jul 19, 2005
Grant Date -
Jan 15, 2004
app pub date -
Jul 12, 2002
filing date -
Jul 12, 2002
priority date (Note) -
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Abstract
Systems, methods and software that use a programmable lock bit that disables read access to a firmware ROM until the CPU is reset or enters into a secure CPU mode. The present invention provides for secure system firmware by preventing access to and reading of the contents of the firmware ROM.
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