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Virus resistant and hardware independent method of flashing system bios

  • US 6,715,074 B1
  • Filed: 07/27/1999
  • Issued: 03/30/2004
  • Est. Priority Date: 07/27/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A computer system comprising:

  • a hard disk drive for receiving and storing a BIOS image;

    a Flash ROM BIOS part adapted to be flashed with said BIOS image;

    a RAM memory for receiving and storing said BIOS image from said hard disk when said BIOS image is to be flashed into said Flash ROM BIOS part, said BIOS image including a flash signature and encoded information for verification that said BIOS image is compatible with a particular computer system;

    a utility program operable to generate a software SMI by writing at least part of said flash signature to an SMI port; and

    a software SMI handler program responsive to said software SMI for determining whether said BIOS image is a certified BIOS image for a particular computer system and on determination of a certified BIOS image, allowing said- BIOS image to be flashed into said Flash ROM BIOS part.

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