parent
fcdeb7114f
commit
3e4e66b312
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@ -29,6 +29,119 @@ reduces the sloccount by only 1 line, maybe 3, but they all add up. Audit 3
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contained hundreds of changes, small changes, that together accounted for
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about 1000 lines of code removed, while not affecting functionality in any way.
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Interesting board ports
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=======================
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Libreboot can support any board from coreboot, in principle. It would also be
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feasible to integrate other (libre) boot firmware, if desirable. The list below
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is not exhaustive, it just lists boards that are interesting to us at this time:
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Boards
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------
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* HP EliteBook 2760p
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* HP ProBook 6360b
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* HP Revolve 810 G1
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* HP EliteBook Folio 9480m
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* HP EliteBook 8770w
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* HP EliteBook 820 G2
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* HP EliteBook 840 G2 (not in coreboot yet, but should be similar to 820 G2)
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* HP Z220 CMI and SFF mainboards
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* Dell OptiPlex 7010 and 9010
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* Dell OptiPlex 7020 and 9020
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* MSI PRO Z690-A mainboard (supported by Dasharo, not sure about coreboot) -
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also, Dasharo supports several more mainboards that aren't in coreboot
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proper.
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* KGPE-D16 and KCMA-D8: use the Dasharo fork of coreboot, instead
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of coreboot `4.11_branch`, because Dasharo's version is much more up to
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date and more reliable with raminit. D8 isn't supported by Dasharo, but it's
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not much different code-wise to the D16 mainboard, so differences
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in coreboot `4.11_branch` could be adapted to provide a Dasharo port.
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ARM-based CrOS devices
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----------------------
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Alper Nebi Yasak ported several of these to Libreboot, but only
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the `gru_bob` and `gru_kevin` machines are known to be stable.
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It would be nice to re-add veyron-based platforms, e.g. `veyron_speedy` - old,
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but still very useful.
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The `nyan`, `peach` and `daisy` platforms were initially added to lbmk, but
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prematurely. They are talked about here:
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<https://libreboot.org/docs/hardware/#removed-boards>
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It would be nice in general to support more ARM platforms in Libreboot. None
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of these machines are as decent as the Apple silicon machines (m1/m2/m3 etc),
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but they're still decent enough for most computing tasks (and the Apple machines
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do not currently have coreboot support).
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The actual coreboot code for these machines is thought to be reliable. The
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problem is that the U-Boot port is not yet stable across all these machines.
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Libreboot has Alper's proof of concept which works well
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on `gru` chromebooks.
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Caleb is interested in the `krane` chromebooks, but has had problems with vboot,
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getting it to boot reliably on custom firmware builds.
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OpenSIL and AMD Ryzen
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---------------------
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Of interest: coreboot has started imported AMD's *OpenSIL*, to support the
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Ryzen-based chromebooks, and there is interest in adapting that code for
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Ryzen-based desktops. AMD Ryzen CPUs are quite powerful, currently among the
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best available at least on consumer-grade hardware.
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UEFI payload
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============
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A UEFI payload in Libreboot is highly desirable, because it would basically
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enable any distro or BSD to Just Work.
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MrChromebox distribution
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------------------------
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MrChromebox is another coreboot distro, similar in spirit to Libreboot.
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Of interest: Mrchromebox provides Tianocore-based UEFI setups on chromebooks,
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and we could probably integrate some of that in Libreboot. Tianocore is
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essentially bloatware, and really a liability for the Libreboot project due
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to its complexity, though MrChromebox targets a very different audience.
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U-Boot SPL and UEFI on x86
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--------------------------
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Simon Glass has been working extensively on x86 support for U-Boot, to be used
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as a coreboot payload. This work is of interest to the Libreboot project,
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because we provide UEFI on ARM but not on x86.
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U-Boot also provides SPL which can be used to execute other software in the
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flash, and it's often used to boot a Linux kernel; since U-Boot provides a
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UEFI implementation, it's perfect.
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U-Boot is the preferred choice of UEFI implementation on x86, for Libreboot
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purposes, because U-Boot uses a coding style similar to Linux and can more
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easily import Linux drivers which are high quality, and Linux functionality
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in general, for anything that we need.
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Since we already provide U-Boot on ARM (thanks to the continued work done by
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Alper Nebi Yasak), U-Boot on x86 would then create a situation whereby Libreboot
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is consistent across platforms, at least for UEFI-based setups.
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uefistub
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--------
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Currently [under review](https://review.coreboot.org/c/coreboot/+/78913) in
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the coreboot project, this provides an *incomplete* UEFI implementation, but
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much more minimalist than the U-Boot one. It doesn't really *do* anything
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except provide the most minimal code possible, and then you can jump to a
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Linux payload in the flash.
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For UEFI purposes, U-Boot seems more mature, and it offers other features
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like SPL. As already stated, this is the preferred UEFI implementation for
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Libreboot, but uefistub is listed too because it's interesting.
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Linuxboot
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=========
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@ -177,3 +290,14 @@ We should keep doing what we're doing, but also provide configurations where
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only the VGA ROM is used, on setups that use a discrete GPU. Libreboot's
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preference is to use the native initialisation, but sometimes the VGA ROM has
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be to be used instead.
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Seek QUBES endorsement
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======================
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Libreboot is compatible with Qubes, on several supported mainboards. This could
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be audited, to provide a complete list. Qubes has a page on their website which
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lists compatible devices.
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It would be a nice way to promote the Libreboot project, and promote Qubes at
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the same time, which is an excellent project. We could host a page specifically
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for it, saying what works on our end, and basically copy that to their wiki.
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Reference in New Issue