Method and system for allowing code to be securely initialized in a computer
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United States of America Patent
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Jun 2, 2009
Grant Date -
Jun 30, 2005
app pub date -
Feb 25, 2005
filing date -
Nov 22, 2000
priority date (Note) -
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Abstract
A memory controller prevents CPUs and other I/O bus masters from accessing memory during a code (for example, trusted core) initialization process. The memory controller resets CPUs in the computer and allows a CPU to begin accessing memory at a particular location (identified to the CPU by the memory controller). Once an initialization process has been executed by that CPU, the code is operational and any other CPUs are allowed to access memory (after being reset), as are any other bus masters (subject to any controls imposed by the initiated code).
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