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Linux 4.2 Gets UEFI ESRT Support For Doing Firmware Updates

Written by Michael Larabel in Linux Kernel on 22 June 2015 at 01:37 PM EDT. 1 Comment

The x86 EFI changes for Linux 4.2 were mailed in this morning and indeed they offer the EFI System Resource Table support as necessary for supporting UEFI 2.5+ system firmware updates.

With the work led by Red Hat / Fedora, the Linux desktop is working towards being able to easily do UEFI/BIOS system firmware updates in a clean, reliable, and easy-to-use manner on hardware that supports UEFI v2.5 or newer. The EFI System Resource Table was part of the UEFI 2.5 specification and is responsible for providing a list of system components that accept firmware upgrades via the UEFI Capsule Update specification.

With Linux 4.2, the ESRT will be exposed to user-space via sysfs. This work along with other EFI improvements are part of this pull request.

1 Comment

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About The Author

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.