公开(公告)号：US10223005B2

公开(公告)日：2019-03-05

申请号：US15897659

申请日：2018-02-15

Applicant: Cisco Technology, Inc.

Inventor： Wei-Jen Huang ,  Chih-Tsung Huang ,  Sachin Agarwal ,  Sha Ma

IPC: G06F12/06 ,  G06F13/16 ,  G06F3/06 ,  G06F12/0864 ,  G06F11/10 ,  H04L12/773 ,  H04L12/741

Abstract: Techniques are described for a memory device. In various embodiments, a scheduler/controller is configured to manage data as it read to or written from a memory. A memory is partitioned into a group of sub-blocks, a parity block is associated with the sub-blocks, and the sub-blocks are accessed to read data as needed. A pending write buffer is added to a group of memory sub-blocks. Such a buffer may be sized to be equal to the group of memory sub-blocks. The pending write buffer handles collisions for write accesses to the same block.

公开(公告)号：US20240184890A1

公开(公告)日：2024-06-06

申请号：US18239607

申请日：2023-08-29

Applicant: Cisco Technology, Inc.

Inventor： Sachin Agarwal ,  Srirajkumar Sundararaman ,  Aviran Kadosh ,  Samir Valjibhai Rajgor ,  Chirag Shroff ,  Kevin Shyh-Kang Chang ,  Dylan Walker

IPC: G06F21/57 ,  G06F21/44

CPC classification number: G06F21/575 ,  G06F21/44

Abstract: A method of operating a system-on-chip (SOC) including decrypting, by isolated Root of Trust (RoT) code, a Stock Keeping Unit (SKU) license code from a host during bootup of a device. Then validating, by the isolated RoT code, the SKU license code with firmware and at least one built-in key of a plurality of built-in keys from secure storage. Finally, enabling or disabling, by the isolated RoT code, at least one feature set of a plurality of feature sets comprising resources configured at the SOC based on at least one SKU license code which has been decrypted by isolated RoT code using at least one built-in key and authenticated by firmware.