公开(公告)号：US20190303230A1

公开(公告)日：2019-10-03

申请号：US15940693

申请日：2018-03-29

Applicant: Advanced Micro Devices, Inc.

Inventor： Dean A. Liberty ,  Vilas K. Sridharan ,  Michael T. Clark ,  Jelena Ilic ,  David S. Christie ,  James R. Williamson ,  Cristian Constantinescu

IPC: G06F11/07 ,  G06F9/48 ,  G06F9/30 ,  G06F9/455

Abstract: Systems, apparatuses, and methods for implementing a hardware enforcement mechanism to enable platform-specific firmware visibility into an error state ahead of the operating system are disclosed. A system includes at least one or more processor cores, control logic, a plurality of registers, platform-specific firmware, and an operating system (OS). The control logic allows the platform-specific firmware to decide if and when the error state is visible to the OS. In some cases, the platform-specific firmware blocks the OS from accessing the error state. In other cases, the platform-specific firmware allows the OS to access the error state such as when the OS needs to unmap a page. The control logic enables the platform-specific firmware, rather than the OS, to make decisions about the replacement of faulty components in the system.

公开(公告)号：US11061753B2

公开(公告)日：2021-07-13

申请号：US15940693

申请日：2018-03-29

Applicant: Advanced Micro Devices, Inc.

Inventor： Dean A. Liberty ,  Vilas K. Sridharan ,  Michael T. Clark ,  Jelena Ilic ,  David S. Christie ,  James R. Williamson ,  Cristian Constantinescu

IPC: G06F11/07 ,  G06F9/48 ,  G06F9/455 ,  G06F9/30

Abstract: Systems, apparatuses, and methods for implementing a hardware enforcement mechanism to enable platform-specific firmware visibility into an error state ahead of the operating system are disclosed. A system includes at least one or more processor cores, control logic, a plurality of registers, platform-specific firmware, and an operating system (OS). The control logic allows the platform-specific firmware to decide if and when the error state is visible to the OS. In some cases, the platform-specific firmware blocks the OS from accessing the error state. In other cases, the platform-specific firmware allows the OS to access the error state such as when the OS needs to unmap a page. The control logic enables the platform-specific firmware, rather than the OS, to make decisions about the replacement of faulty components in the system.