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1. 发明申请

WO2018005253A1 FAULT-TOLERANT VARIABLE REGION REPAVING DURING FIRMWARE OVER THE AIR UPDATE 审中-公开
标题翻译：在空气更新期间在固件期间采取容错变量区域
公开(公告)号：WO2018005253A1
公开(公告)日：2018-01-04
申请号：PCT/US2017/038893
申请日：2017-06-23
申请人： MICROSOFT TECHNOLOGY LICENSING, LLC
发明人： ANNAPUREDDY, Thirupathaiah , MEHENDALE, Bhushan , MAHOOD, Adam Matthew , JUSTIN, Ajit
IPC分类号： G06F11/14
CPC分类号： G06F8/654 , G06F11/1433 , H04L67/34
摘要： Variables utilized in device firmware that provides various boot and runtime services are repaved in a fault-tolerant manner within a secure store in a durable, non-volatile device memory during an FOTA update process. A spare region in the secure store is utilized to temporarily hold a back-up of a primary region in which the firmware variables are written. Using a transaction-based fault- tolerant write (FTW) process, the variables in the primary region can be repaved with variables contained in a firmware update payload that is delivered from a remote service. In the event of a fault in the variable region repaving process, either the primary or spare region will remain valid so that firmware in a known good state can be utilized to enable the device to boot successfully and the variable region repaving in the FOTA update process may be restarted.
摘要翻译：在FOTA更新过程中，提供各种启动和运行时服务的设备固件中使用的变量在安全存储器中以容错方式重新装入持久的非易失性设备存储器中。利用安全存储中的备用区域暂时保存写入固件变量的主区域的备份。使用基于事务的容错写入（FTW）过程，可以使用远程服务提供的固件更新有效负载中包含的变量重新修复主区域中的变量。如果可变区重新制造过程出现故障，则主要区或备用区将保持有效，以便可以利用处于已知良好状态的固件来使设备能够成功引导并且在FOTA更新过程中重新设置可变区可能会重新启动。

2. 发明申请

WO2021158359A1 FIRMWARE UPDATE PATCH 审中-公开
公开(公告)号：WO2021158359A1
公开(公告)日：2021-08-12
申请号：PCT/US2021/014029
申请日：2021-01-19
申请人： MICROSOFT TECHNOLOGY LICENSING, LLC
发明人： XIE, Daini , ANNAPUREDDY, Thirupathaiah , BULUSU, Mallik , AHMED, Muhammad Ashfaq
IPC分类号： G06F8/654 , G06F21/57
摘要： A computing system is provided, including a processor and memory storing instructions that, when executed, cause the processor to store a firmware update patch in a runtime buffer included in the memory. The runtime buffer may be accessible by firmware and an operating system of the computing system. The processor may perform a first verification check on the firmware update patch. When the firmware update patch passes the first verification check, the processor may copy the firmware update patch to a system management random access memory (SMRAM) buffer included in the memory. The SMRAM buffer may be accessible by the firmware and inaccessible by the operating system. The processor may perform a second verification check on the copy of the firmware update patch. When the copy of the firmware update patch passes the second verification check, the processor may execute the copy of the firmware update patch.

3. 发明申请

WO2018005250A3 FAULT-TOLERANT VARIABLE REGION REPAVING DURING FIRMWARE OVER THE AIR UPDATE 审中-公开
公开(公告)号：WO2018005250A3
公开(公告)日：2018-01-04
申请号：PCT/US2017/038890
申请日：2017-06-23
申请人： MICROSOFT TECHNOLOGY LICENSING, LLC
发明人： ANNAPUREDDY, Thirupathaiah , MEHENDALE, Bhushan , MAHOOD, Adam Matthew , JUSTIN, Ajit
IPC分类号： G06F11/14 , G06F9/445 , G06F21/57
摘要： Variables utilized in device firmware that provides various boot and runtime services are repaved in a fault-tolerant manner within a secure store in a durable, non-volatile device memory during an FOTA update process. A spare region in the secure store is utilized to temporarily hold a back-up of a primary region in which the firmware variables are written. Using a transaction-based fault- tolerant write (FTW) process, the variables in the primary region can be repaved with variables contained in a firmware update payload that is delivered from a remote service. In the event of a fault in the variable region repaving process, either the primary or spare region will remain valid so that firmware in a known good state can be utilized to enable the device to boot successfully and the variable region repaving in the FOTA update process may be restarted.

4. 发明申请

WO2018005250A2 FAULT-TOLERANT VARIABLE REGION REPAVING DURING FIRMWARE OVER THE AIR UPDATE 审中-公开
公开(公告)号：WO2018005250A2
公开(公告)日：2018-01-04
申请号：PCT/US2017/038890
申请日：2017-06-23
申请人： MICROSOFT TECHNOLOGY LICENSING, LLC
发明人： ANNAPUREDDY, Thirupathaiah , MEHENDALE, Bhushan , MAHOOD, Adam Matthew , JUSTIN, Ajit
IPC分类号： G06F11/14
CPC分类号： G06F8/654 , G06F3/0619 , G06F3/065 , G06F3/067 , G06F3/0688 , G06F8/65 , G06F9/485 , G06F11/1433 , G06F21/572 , G06F21/575 , H04L67/34
摘要： Variables utilized in device firmware that provides various boot and runtime services are repaved in a fault-tolerant manner within a secure store in a durable, non-volatile device memory during an FOTA update process. A spare region in the secure store is utilized to temporarily hold a back-up of a primary region in which the firmware variables are written. Using a transaction-based fault- tolerant write (FTW) process, the variables in the primary region can be repaved with variables contained in a firmware update payload that is delivered from a remote service. In the event of a fault in the variable region repaving process, either the primary or spare region will remain valid so that firmware in a known good state can be utilized to enable the device to boot successfully and the variable region repaving in the FOTA update process may be restarted.

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