However, Tiano is only the hardware-independent part of UEFI. It contains no device drivers. If you strip out the drivers from the Linux kernel, the device-independent remainder is smaller than Tiano.

MILPITAS, Calif., Sept. 8, 2011 /PRNewswire/ — Phoenix Technologies Ltd., the global leader in core system software (BIOS/firmware) products, today announced that it has readied its mainstream UEFI ...

Regarding security enhancements similar to the Secure Boot stage defined by Tiano (UEFI), Phoenix SCT 3.0 ensures that only reliable software and firmware can be executed and adds BIOS system ...