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:
Nov. 28, 2023
Filed:
Jan. 29, 2021
Marvell Asia Pte, Ltd., Singapore, SG;
Ramacharan Sundararaman, San Jose, CA (US);
Saurabh Shrivastava, Saratoga, CA (US);
Avinash Sodani, San Jose, CA (US);
Nithyananda Miyar, San Jose, CA (US);
Marvell Asia Pte Ltd, Singapore, SG;
Abstract
A new approach is proposed to support hardware-based protection for registers of an electronic device. Sources requesting access to the registers are categorized into a set of internal sources that can be trusted and a set of external sources that are untrusted. The registers are classified into a set of internal registers allowed to be accessed by the internal resources only, a set of read-only external registers that can be read by the external resources in addition to accessed by the internal resources, and a set of read/write external registers that can be read and written by both the internal and the external resources. Each access request by a source to the registers includes the source type, wherein access request is granted or denied based on the matching between the source bits in the access request and the register classification bits of the one or more registers to be accessed.