Linux 5.8 Seeing The Preliminary Changes Ahead Of RISC-V EFI Support
Written by Michael Larabel in Hardware on 26 April 2020 at 02:27 AM EDT. Add A Comment
HARDWARE --
One of the areas being worked on upstream recently for the RISC-V architecture's Linux kernel support is EFI handling. The preliminary work for supporting EFI on RISC-V is set to land for the Linux 5.8 kernel.

In recent months the Linux EFI code has been going through a spring cleaning of sorts with the preparations towards RISC-V enablement. The initial preparations for RISC-V EFI support have been sent in as part of EFI-next code ultimately destined for Linux 5.8.

Among those changes are unifying EFI call wrappers for non-x86, various code changes to improve portability / architecture agnostic, and other code enhancements. This is just the preliminary work with the actual RISC-V EFI support left yet to land.

Also with these EFI changes in general for Linux 5.8 is support for being able to specify the resolution and depth via the command-line for the EFI graphics output protocol code. Specifying of the display resolution for EFI GOP can be done using the video=efifb:[xres]:[yres]. The video=efifb:auto option is there for retaining the automatically picked best (highest) resolution.

The list of EFI material queued so far for EFI-Next ahead of the Linux 5.8 cycle this summer can be found via LKML.org.
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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 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 or contacted via MichaelLarabel.com.

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