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Protected memory area

  • US 10,102,154 B2
  • Filed: 05/05/2016
  • Issued: 10/16/2018
  • Est. Priority Date: 07/31/2012
  • Status: Active Grant
First Claim
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1. A method of a computing device, comprising:

  • in response to the computing device powering on, creating a protected memory area inaccessible to an operating system, wherein the protected memory area includes information relating to instructions and an indication settable to a first value to indicate that the instructions are allowed to access a memory external of the protected memory area, and a second value to indicate that the instructions are not allowed to access the memory external of the protected memory area;

    in response to creating the protected memory area, modifying the indication from the first value to the second value to restrict the instructions when executed from accessing the memory external of the protected memory area; and

    in response to modifying the indication, launching code in the computing device, the launched code comprising the operating system or firmware.

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