发明授权
- 专利标题： Privileged mode methods and circuits for processor systems
- 专利标题（中）： 处理器系统的特权模式方法和电路
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申请号： US13340418申请日： 2011-12-29
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公开(公告)号： US09262340B1公开(公告)日： 2016-02-16
- 发明人: Hans van Antwerpen
- 申请人： Hans van Antwerpen
- 申请人地址： US CA San Jose
- 专利权人： Cypress Semiconductor Corporation
- 当前专利权人： Cypress Semiconductor Corporation
- 当前专利权人地址： US CA San Jose
- 主分类号： G06F12/14
- IPC分类号： G06F12/14
摘要：
A system can include a processor coupled to a bus; a first memory coupled to the bus, configured to limit access to a privileged portion according to at least protection values; a second memory coupled to the bus and having a privileged supervisory portion configured to be section erasable, access to the second memory being limited according to at least the protection values; and a boot sequence stored in the privileged portion that configures the processor to decode values stored in the supervisory portion into the protection values for storage in protection value registers.
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