Invention Grant
- Patent Title: Method to issue write protect commands on dynamic random-access memory (DRAM) cells in a system run-time environment
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Application No.: US16550578Application Date: 2019-08-26
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Publication No.: US11436379B2Publication Date: 2022-09-06
- Inventor: Raghu Vamsi Krishna Talanki , Krishna Mogilipuvvu
- Applicant: SAMSUNG ELECTRONICS CO., LTD.
- Applicant Address: KR Suwon-si
- Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee: SAMSUNG ELECTRONICS CO., LTD.
- Current Assignee Address: KR Suwon-si
- Agency: Volentine, Whitt & Francos, PLLC
- Main IPC: G06F21/79
- IPC: G06F21/79 ; G06F9/4401 ; G06F21/57 ; G06F13/16 ; G06F12/10 ; G06F12/0804
Abstract:
A method for securing one or more cells of a dynamic random-access memory (DRAM) device embedded in a system includes: (1) triggering, by one of a boot loader, an operating system (OS) and an application, a system management interrupt (SMI), (2) invoking, by a basic input/output system (BIOS), a BIOS SMI handler, (3) converting a physical address of secure data to a DRAM address using a reliability, availability and serviceability (RAS) protocol of a BIOS, and (4) performing a write protect operation on the secure data present in the DRAM device by issuing a device-supported security command in a BIOS SMI service routine.
Information query
