Systems, apparatuses and methods may provide for firmware access wrapper technology that includes a plurality of input registers communicatively coupled to a hardware power controller, a plurality of output registers communicatively coupled to the hardware power controller, and a processor communicatively coupled to the input registers and the output registers. The processor may include configurable logic to identify a control policy change with respect to the hardware power controller, detect input signal information in one or more of the input registers, and conduct a modification of one or more values in the output registers based on the control policy change and the input signal information.