公开(公告)号：US20160055068A1

公开(公告)日：2016-02-25

申请号：US14780967

申请日：2013-04-23

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： JEFFREY KEVIN JEANSONNE ,  VALLIUDDIN Y ALI ,  LAN WANG

IPC: G06F11/14 ,  G06F3/06

CPC classification number: G06F11/1469 ,  G06F3/0619 ,  G06F3/0629 ,  G06F3/0683 ,  G06F21/572 ,  G06F2201/84

Abstract: In a state of a system in which a processor of the system is not accessing a first memory, a controller in the system determines whether system boot code from the first memory in the system is compromised, wherein the first memory is accessible by the processor and the controller over a bus. In response to determining that the system boot code is compromised, the controller retrieves system boot code from a second memory in the computing device to replace the system boot code in the first memory, where the second memory is electrically isolated from the bus and is inaccessible by the processor.

Abstract translation: 在系统的处理器不访问第一存储器的系统的状态下，系统中的控制器确定来自系统中的第一存储器的系统引导代码是否受到损害，其中第一存储器可由处理器访问，并且 控制器通过总线。 响应于确定系统引导代码被破坏，控制器从计算设备中的第二存储器检索系统引导代码以替换第一存储器中的系统引导代码，其中第二存储器与总线电隔离并且是不可访问的 由处理器。