Drew of SuSE has a new blog post clarifying UEFI -vs- BIOS:
SuSE even has a certification program, as this blog mentions:
“[…] All YES CERTIFICATION bulletins list how the hardware and operating system were configured and tested during certification. On a bulletin, under the tested configuration section there is a BIOS/UEFI line, it will list either UEFI, BIOS or UEFI-Legacy. This indicates how the system was configured and tested. It then lists the version and date of the system firmware installed on the hardware. […]”
This certification program doesn’t cover [implementation differences in] UEFI Secure Boot. While the current change in their certification — to clarify if system has a UEFI class 1-3 firmware — is nice, what would be USEFUL would be to list CHIPSEC version and a list a list of which security modules it fails. And the results of FWTS’s tests (does Canonical’s FWTS build on SuSE?). When a system is tested, I’d like to see the test results, please. And does this mean that SuSE will not ship any coreboot- or U-Boot-based systems, but always UEFI/BIOS-based ones? Given how crucial firmware is to a system, I am amazed at how little consumers care about this information. I guess I should be happy SuSE is giving 1-line of data to firmware. I’d like a paragraph.
https://www.suse.com/communities/blog/comparison-uefi-bios-operating-system-perspective/
Firmware Security 