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

Linux Developers Jump Quickly On ACPI 5.1, Helps Out ARM

Hardware

Published on 24 July 2014 09:48 AM EDT
Written by Michael Larabel in Hardware
12 Comments

Fresh off the release of ACPI 5.1 by the UEFI Forum, Linux developers are updating their support against this latest revision to the Advanced Configuration and Power Interface. In particular, ACPI 5.1 is supposed to help out ARM.

While accessing the ACPI/UEFI specifications still require jumping through some hoops, the ACPI 5.1 update is reported to fix major gaps in supporting ACPI on ARM. Hanjun Guo has already laid out patches for providing Linux ARM64 support compliant with the ACPI 5.1 specification. ACPI 5.1 has "major changes" to the MADT, FADT, GTDT, and _DSD for bettering up this non-x86 platform support.

Hanjun Guo sent out 19 patches this morning for introducing ACPI on 64-bit ARM. Developers interested in all of the ACPI AArch64 technical details can see the mailing list post. Testing of these patches from a 64-bit ARM "Juno" reference platform have shown that Linux can now boot successfully just using ACPI without any Device Tree dependence.

Also sent out were ACPICA updates for ACPI 5.1 as a temporary measure for testing the ARM64 support; a proper ACPI 5.1 update to ACPICA is being worked on by the upstream kernel developers. Hopefully with Linux 3.17 we'll be able to start seeing some updates for the ACPI 5.1 specification.

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. A Walkthrough Of The New 32 System Open-Source Linux Benchmarking Test Farm
  2. Habey MITX-6771: Mini-ITX Board With Quad-Core J1900 Bay Trail
  3. OCZ Vector 150 SSD On Linux
  4. Noctua i4 CPU Cooler: Great For Cooling High-End LGA-2011v3 CPUs
Latest Linux Articles
  1. AMD Kaveri: Open-Source Radeon Gallium3D vs. Catalyst 14.12 Omega Driver
  2. 12-Way AMD Catalyst 14.12 vs. NVIDIA 346 Series Linux GPU Comparison
  3. AMD Catalyst 14.12 Omega Driver Brings Mixed Results For Linux Users
  4. 6-Way Winter 2014 Linux Distribution Comparison
Latest Linux News
  1. Civilization: Beyond Earth Linux GPU/Driver Benchmarks
  2. X.Org Server 1.16.3 Released To Fix Security Issues
  3. Linux 3.19 Merge Window Closes Ahead Of Schedule
  4. MIPS R6 Architecture Now Supported By GCC
  5. LowRISC To Feature Tagged Memory & Minion Cores
  6. Intel Skylake Audio Support For Linux 3.19
  7. After 10+ Years, NetworkManager Reaches v1.0
  8. VDPAU Updated To v0.9
  9. An Open Hardware Random Number Generator Proposed
  10. LLVM 3.6 Will Be Branched Next Month
Latest Forum Discussions
  1. Are there an app using HSA ?
  2. Need some hand holding with upgrading xserver
  3. The New SuperTuxKart Looks Better, But Can Cause GPU/Driver Problems
  4. XLennart: A Game For Systemd Haters With Nothing Better To Do
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. Debian init discussion in Phoenix Wright format
  7. FPS capped on Linux (AMD fglrx drivers)
  8. Bench specific mount point