1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

UEFI On Linux Is Like A Pathogen

Free Software

Published on 06 April 2012 01:13 PM EDT
Written by Michael Larabel in Free Software
39 Comments

Red Hat's Matthew Garrett talked this week again about the troubles in supporting UEFI under Linux.

With Linux support for PCI Express ASPM having been corrected to address the notorious Linux kernel power regression of last year, Matthew Garrett's latest topic and focus of work has been on UEFI for Linux.

Matthew's commonly talking about the UEFI problems with Linux, especially when it comes to the Secure Boot functionality. Some past examples (and some reading for reference) include UEFI Secure Boot Still A Big Problem For Linux, Going Over The Good & Bad For UEFI On Linux, and Myths About Secure Boot: Security, Microsoft, Etc.

Matthew Garrett's talk this time about UEFI on Linux wasn't as negative, but went over how UEFI is a BSD-licensed PC BIOS replacement, is required for Microsoft Windows 8 certification, and has support for some useful features like handling disk drives greater than 2.2TB in size and IPv6 support. There's also some benefits like being able to boot at the native graphics mode, potential for a seamless boot experience, and offers persistent variable storage.

The negative items about UEFI on Linux that Garrett expressed include UEFI receiving little testing on consumer hardware, several significant bugs, the specification is quite complex at 2214 pages in length, kernel workarounds are needed for ensuring compatibility, and SecureBoot itself is a bitch for Linux. The significant UEFI bugs also have the potential of crippling hardware.

The key concerns with UEFI SecureBoot on Linux come down to being the Linux kernel needing to be heavily locked-down, no support for unsigned kernel modules (especially binary / out-of-tree modules), and no direct hardware access from user-space. Besides the obvious issues with UEFI SecureBoot on Linux, there's also license concerns about it with the GPLv3, lots of code to write, and getting anything wrong is a serious problem.

UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen
UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen
UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen
UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen
UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen
UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen UEFI On Linux Is Like A Pathogen
UEFI On Linux Is Like A Pathogen

Matthew Garrett this week at the summit also classified Linux as a pathogen (Phoronix Poll) in terms of adoption. Dong Wei of Hewlett-Packard also did a session on UEFI for Linux, but his presentation was much more optimistic towards this BIOS replacement, Dong's slides are here.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. A Tour Of The New Phoronix Office
  2. 7-Way Linux Desktop Gaming Comparison On Ubuntu 14.10
  3. Intel P-State vs. CPUFreq Benchmarks On The i7-5960X
  4. RadeonSI GLAMOR Benchmarks With X.Org Server 1.16
Latest Linux News
  1. Linux 3.17-rc6 Released; Linux 3.17 Final Might Come In One Week
  2. X.Org Server 1.16.1 Released
  3. Mesa Gets Closer To Having OpenGL 4.0 Tessellation Support
  4. Uselessd: A Stripped Down Version Of Systemd
  5. F2FS Tools Gain FSCK Support
  6. FreeBSD 10.1 Has The New VT Driver, Hardware Improvements
  7. AntiMicro 2.6 Yields Greater Compatibility For Gamepads On Linux
  8. OpenGL 3.3 / GLSL 3.30 Lands For Intel Sandy Bridge On Mesa
  9. AMD's RadeonSI Gallium3D Driver Sees Some Improvements
  10. Mesa 10.3 Released With The Latest Open-Source GPU Driver Improvements
Latest Forum Discussions
  1. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  2. Wasteland 2 Officially Launched Today, Including For Linux Gamers
  3. NVIDIA GTX 770/780 -works ?
  4. Trolling on the Phoronix forums
  5. New stress testing utility for GPU's
  6. ASRock AM1H-ITX: One Of The Best AM1 Mini-ITX Motherboards
  7. Can Linux kill a motherboard?
  8. Stop grabbing my keyboard :(