Patent ID: 9594414
Date: 2017-03-14
CPC Classifications: G06F

Claim:
1. A method for providing a coordinated shutdown of auxiliary power comprising: placing an information handling system into a standby mode of operation, the information handling system comprising a system complex programmable logic device (CPLD), the system CPLD being configured to enable on the fly reprogramming and resuming a last state after the reprogramming, the system CPLD providing power control, power sequencing and wake event control functionality to the information handling system; activating console control of a system simulated power cycle; generating a command to shut down auxiliary power at a PM Bus enabled power supply, the command being sent via broadcast addressing to the PM Bus enabled power supply, the command comprising a manufacturer specific command, the manufacturer specific command comprising a numeric field, the numeric field specifying a duration of power removal; and, transitioning the PM Bus enabled power supply from an auxiliary power state to a sub-auxiliary power state so as to remove power from a rail of the auxiliary power supply until a predetermined condition occurs, the predetermined condition comprising removing power from the auxiliary rail of the power supply for a designated amount of time; and wherein a management controller initiates an auxiliary power cycle by generating the command to shut down auxiliary power; the sub-auxiliary power state is provided via a gated auxiliary power rail where the auxiliary power rail includes very low power control logic; and, the transitioning the PM Bus enabled power supply causes planar auxiliary subcircuit power to be removed from the information handling system, causing the information handling system to follow predictable behavior as if an AC removal had occurred to the information handling system.