The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2022
Filed:
Sep. 29, 2017
Apple Inc., Cupertino, CA (US);
Joshua P. de Cesare, Campbell, CA (US);
Timothy R. Paaske, Cupertino, CA (US);
Xeno S. Kovah, Mountain View, CA (US);
Nikolaj Schlej, Sunnyvale, CA (US);
Jeffrey R. Wilcox, San Jose, CA (US);
Ezekiel T. Runyon, San Francisco, CA (US);
Hardik K. Doshi, Los Altos, CA (US);
Kevin H. Alderfer, San Francisco, CA (US);
Corey T. Kallenberg, Los Gatos, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A method and apparatus for performing a secure boot of a computer system is disclosed. A computer system according to the disclosure includes an auxiliary processor and a main processor. The boot process includes initially booting the auxiliary processor. The auxiliary processor includes a non-volatile memory storing boot code for the main processor. The auxiliary processor may perform a verification of the boot code. Subsequent to verifying the boot code, the main processor may be released from a reset state. Once the main processor is no longer in the reset state, the boot code may be provided thereto. Thereafter, the boot procedure may continue with the main processor executing the boot code.