He has been writing firmware for 40 years, starting with the z80 and 6800. He's also a long time contributor in the Unix, BSD, Plan 9, and Linux communities. He started the LinuxBIOS project in 1999, which was renamed to coreboot in 2008 and is now used in tens of millions of Chromebooks. His most recent effort, LinuxBoot, is now part of the Linux Foundation and aims to bring the benefits of a full Linux kernel to several firmware environments, including coreboot, u-boot, and UEFI.