1. An information handling system comprising: a processor; a management controller communicatively coupled to the processor; and a basic input/output system comprising a program of instructions executable by the processor and configured to, during boot of the information handling system: initialize information handling resources of the information handling system for interoperability with the processor; and in concert with the management controller: determine a first amount of energy required by the information handling system to flush a cache integral to the information handling system to memory integral to the information handling system in response to a power loss of one or more power supplies for supplying electrical energy to the information handling system; determine whether a second amount of energy available for hold-up of one or more power supplies in response to the power loss exceeds the first amount of energy; and responsive to determining whether the second amount of energy exceeds the first amount of energy, configure the cache.