Technologies are provided herein for multiple platform support in a computer system firmware. A firmware is built for each hardware platform to be supported. At built time of the firmware for each platform to be supported, an instance of platform specific information is extracted from the built firmware and stored. Once the platform specific information instances have been collected for each platform to be supported, the platform specific information instances are stored in a multi-platform firmware. At run-time of the multi-platform firmware, the particular hardware platform that the multi-platform firmware is executing upon is identified. Once the platform has been identified, the particular instance of platform specific information corresponding to the identified platform is selected. The selected instance of platform specific information is then loaded and exposed for consumption by other programs.