More EFI ARM64 Work, Additional UEFI 2.5 Features In Linux 4.4
Written by Michael Larabel in Hardware on 3 November 2015 at 08:15 AM EST. Add A Comment
HARDWARE --
One of the many pull requests sent in today by Ingo Molnar for the Linux 4.4 merge window was the EFI subsystem update.

The EFI changes in Linux 4.4 include more code generalization work to make the traditionally x86 code more happy for 64-bit ARM (U)EFI support, support for various EFI extensions, new debugging parameters, code clean-ups, and more.

The EFIFB frame-buffer driver in Linux 4.4 now supports 64-bit frame-buffer addresses as one of the additions. Support for UEFI 2.5's EFI_PROPERTIES_TABLE, which is initially used to indicate whether memory protection is enabled but could be used for other configuration data too, is now supported. As part of this is support for the EFI_MEMORY_RO attribute of UEFI 2.5.

More details on the EFI changes for Linux 4.4 via the pull request.
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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 10,000 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 or contacted via MichaelLarabel.com.

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