G0 (S0) – the working state: The running firmware or OS is in S0 state.
- G1 – the sleep state
S1 – standby: All system context is preserved, except the CPU cache. All CPUs are halted. Other devices are still in a working state. The system resumes from the next instruction when the system is suspended.
S2 – similar to S1: Not used today.
S3 – suspend to memory: The system context is saved into the ...
© Jiewen Yao and Vincent Zimmer 2020J. Yao, V. ZimmerBuilding Secure Firmwarehttps://doi.org/10.1007/978-1-4842-6106-4_9
9. S3 Resume
The Advanced Configuration and Power Interface (ACPI) specification defines a set of power states (see Figure 9-1). These power states include the following: