发明授权
US07003676B1 Locking mechanism override and disable for personal computer ROM access protection
失效
锁定机制覆盖并禁用个人计算机ROM访问保护
- 专利标题: Locking mechanism override and disable for personal computer ROM access protection
- 专利标题(中): 锁定机制覆盖并禁用个人计算机ROM访问保护
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申请号: US09871084申请日: 2001-05-30
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公开(公告)号: US07003676B1公开(公告)日: 2006-02-21
- 发明人: Frederick D. Weber , Dale E. Gulick
- 申请人: Frederick D. Weber , Dale E. Gulick
- 申请人地址: US TX Austin
- 专利权人: Advanced Micro Devices, Inc.
- 当前专利权人: Advanced Micro Devices, Inc.
- 当前专利权人地址: US TX Austin
- 代理机构: Williams, Morgan & Amerson
- 主分类号: G06F11/30
- IPC分类号: G06F11/30 ; H04L9/00
摘要:
A method and system for overriding access locks on secure assets in a computer system. The system includes a processor and a device coupled to the processor. The device includes one or more sub-devices, one or more access locks, and an access lock override register that stores one or more access lock override bits, including a lock override bit. The one or more access locks are configured to prevent access to the one or more sub-devices when the one or more access locks are engaged. Access to the one or more sub-devices is not allowed when the lock override bit is set. The method includes requesting a memory transaction for one or more memory addresses and determining a lock status for the one or more memory addresses. The method also includes returning the lock status for the one or more memory addresses. The method may determine if the lock status for the one or more memory address can be changed. The method may change the lock status of the one or more memory addresses to allow the memory transaction.
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