TECHNOLOGIES FOR IMPROVED HYBRID SLEEP POWER MANAGEMENT
    3.
    发明申请
    TECHNOLOGIES FOR IMPROVED HYBRID SLEEP POWER MANAGEMENT 审中-公开
    改进混合电源管理技术

    公开(公告)号:US20160282927A1

    公开(公告)日:2016-09-29

    申请号:US14670939

    申请日:2015-03-27

    摘要: Technologies for hybrid sleep power management include a computing device with a processor supporting a low-power idle state. In a pre-boot firmware environment, the computing device reserves a memory block for firmware use and copies platform wake code to a secure memory location, such as system management RAM (SMRAM). At runtime, an operating system may execute with the processor in protected mode. In response to a request to enter a sleep or suspend state, the computing device generates a system management interrupt (SMI). In an SMI handler, the computing device copies the wake code from SMRAM to the reserved memory block. The computing device resumes from the SMI handler to the wake code with the processor in real mode. The wake code enters the low-power idle state and then jumps to a wake vector of the operating system after receiving a wake event. Other embodiments are described and claimed.

    摘要翻译: 用于混合睡眠电源管理的技术包括具有支持低功率空闲状态的处理器的计算设备。 在预引导固件环境中,计算设备保留用于固件使用的存储器块,并将平台唤醒码复制到诸如系统管理RAM(SMRAM)之类的安全存储器位置。 在运行时,操作系统可以以处于保护模式的方式执行。 响应于进入睡眠或挂起状态的请求,计算设备产生系统管理中断(SMI)。 在SMI处理程序中,计算设备将唤醒码从SMRAM复制到保留的存储块。 计算设备从处理器以实模式从SMI处理程序恢复到唤醒码。 唤醒码进入低功率空闲状态,然后在接收到唤醒事件后跳转到操作系统的唤醒向量。 描述和要求保护其他实施例。