Difference between revisions of "Support/UEFI"

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m (Fixed accuracy of UEFI firmware status)
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GalliumOS currently does not support UEFI, however it is possible to get it working with some time and effort. We opted to exclude UEFI support for GalliumOS because was no acceptable UEFI payload for the target hardware of GalliumOS. There is now a coreboot UEFI payload available on Chrome hardware, and GalliumOS does plan to add UEFI support.
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UEFI-capable custom firmware is now available for some ChromeOS devices (currently Haswell and Broadwell models only).
  
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UEFI support is interesting to GalliumOS because it could bring better Bay Trail support (see [[Support/BayTrail]]), support for Braswell (see [[Support/Braswell]]), potential support for some ARM models (see [[Support/ARM]]), and potentially even support for other non-Chrome hardware that could be considered as possible targets for GalliumOS. UEFI support is also interesting because it could potentially reduce boot time and possibly even bring it very close to parity with ChromeOS.
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The current GalliumOS release (2.0) '''does not support''' UEFI booting, though it can be configured manually. The necessary modifications to GalliumOS will be incorporated into future releases, presently soft-targeted for GalliumOS 2.1.
  
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GalliumOS currently has no specific plans for how we plan to implement UEFI, however it seems likely that we will go about it in a very different way from Debian or Ubuntu. UEFI allows booting the Linux kernel directly, without the need for any bootloader, which could save us a lot of boot time by skipping GRUB entirely.
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UEFI support is appealing for a couple reasons:
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* UEFI booting should improve boot time by a few seconds
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* UEFI might be a good reusable solution for future Braswell support, and possibly for some ARM Chromebooks and non-ChromeOS devices
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NOTE: UEFI support is not included in factory firmware on any ChromeOS devices. Adding support will require flashing "full" firmware, and will therefore prevent dual-booting alongside ChromeOS.

Revision as of 18:53, 22 July 2016

UEFI-capable custom firmware is now available for some ChromeOS devices (currently Haswell and Broadwell models only).

The current GalliumOS release (2.0) does not support UEFI booting, though it can be configured manually. The necessary modifications to GalliumOS will be incorporated into future releases, presently soft-targeted for GalliumOS 2.1.

UEFI support is appealing for a couple reasons:

  • UEFI booting should improve boot time by a few seconds
  • UEFI might be a good reusable solution for future Braswell support, and possibly for some ARM Chromebooks and non-ChromeOS devices

NOTE: UEFI support is not included in factory firmware on any ChromeOS devices. Adding support will require flashing "full" firmware, and will therefore prevent dual-booting alongside ChromeOS.

Retrieved from "https://wiki.galliumos.org/index.php?title=Support/UEFI&oldid=1014"