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:
Apr. 08, 2014
Filed:
Feb. 26, 2013
Broadcom Corporation, Irvine, CA (US);
Stephane Rodgers, San Diego, CA (US);
Andrew Dellow, Minchinhampton, GB;
Xuemin Chen, San Diego, CA (US);
Iue-Shuenn Chen, San Diego, CA (US);
Qiang Ye, Tustin, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
A system and method that enables secure system boot up with a restricted central processing unit (CPU). The system includes a memory, a segmenting device, and a security sub-system. The memory is a NAND flash memory with a block structure that comprises a guaranteed block and non-guaranteed blocks. The guaranteed block is guaranteed to be useable. A boot code is segmented into boot code segments and the boot code segments are stored separately in the guaranteed and non-guaranteed blocks. The security sub-system is configured to locate the boot code segments stored in the non-guaranteed blocks and validate them independently based on data in the guaranteed block. The security sub-system is further configured to assemble the boot code segments into the boot code and execute the boot code.