Date: Mon, 12 Feb 2018 09:31:58 -0700 From: Warner Losh <imp@bsdimp.com> To: Kris Moore <kris@ixsystems.com> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: LUA boot loader coming very soon Message-ID: <CANCZdfr47axGuLB0jjRxtKPoL95rdnjXuSe2-xf3QvcchjHGTg@mail.gmail.com> In-Reply-To: <741cdd4f-c4f3-5909-26a9-4cc8f5231eea@ixsystems.com> References: <CANCZdfqJzPud2GeMgc=zRNnz%2BQY0MuOft3L3OeQeq5w75NfbQA@mail.gmail.com> <741cdd4f-c4f3-5909-26a9-4cc8f5231eea@ixsystems.com>
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On Mon, Feb 12, 2018 at 9:26 AM, Kris Moore <kris@ixsystems.com> wrote: > On 02/12/2018 10:27, Warner Losh wrote: > > Greetings, > > > > As you may know, the Lua (http://www.lua.org) boot loader has been in > the > > works for some time. It started out life as a GSoC in 2014 by Pedro Souza > > mentored by Wojciech A. Koszek. Rui Paulo created a svn project branch to > > try to integrate it. I rebased that effort into a github branch which > Pedro > > Arthur fixed up. Over the past year, I've been cleaning up the boot > loader > > for other reasons, and found the time was ripe to start integrating this > > into the tree. However, those integration efforts have taken a while as > my > > day-job work on the boot loader took priority. In the mean time, Ed Maste > > and the FreeBSD Foundation funded Zakary Nafziger to enhance the original > > GSoC Lua scripts to bring it closer to parity with the evolution of the > > FORTH menu system since the GSoC project started. > > > > I'm pleased to announce that all these threads of development have > > converged and I'll be pushing the FreeBSD Lua Loader later today. This > > loader uses Lua as its scripting language instead of FORTH. While > > co-existance is planned, the timeline for it is looking to be a few weeks > > and I didn't want to delay pushing this into the tree for that. > > > > To try the loader, you'll need to build WITHOUT_FORTH=yes and > > WITH_LOADER_LUA=yes. Fortunately, you needn't do a full world to do this, > > you can do it in src/stand and install the result (be sure to have the > > options for both the build and the install). This will replace your > current > > /boot/loader that is scripted with FORTH to one that's scripted with Lua. > > It will install the lua scripts in /boot/lua. The boot is scripted with > > /boot/lua/loader.lua instead of /boot/loader.rc. You are strongly advised > > to create a backup copy of /boot/loader before testing (eg cp > /boot/loader > > /boot/loader_forth), since you'll need to boot that from boot2 if > something > > goes wrong. I've tested it extensively, though, with userboot.so and it's > > test program, so all the initial kinks of finding the lua scripts, etc > have > > been worked out. > > > > While it's possible to build all the /boot/loader variants with Lua, I've > > just tested a BIOS booting /boot/loader both with and without menus > > enabled. I've not tested any of the other variants and the instructions > for > > testing some of them may be rather tedious (especially UEFI, if you want > a > > simple path to back out). Since there's not been full convergence > testing, > > you'll almost certainly find bumps in this system. Also, all the > > build-system APIs are likely not yet final. > > > > I put MFC after a month on the commit. Due to the heroic (dare I say > > almost crazy) work of Kyle Evans on merging all the revs from -current to > > 11, I'm planning a MFC to 11 after the co-existence issues are hammered > > out. In 11, FORTH will be the default, and Lua will be built by default, > > but users will have to do something to use it. 12, both FORTH and Lua > will > > be built and installed, with Lua as default (barring unforeseen > > complications). Once the co-existence stuff goes in, I imagine we'll make > > the switch to Lua by default shortly after that. In 13, FORTH will be > > removed unless there's a really really compelling case made to keep it. > > > > So please give it a spin and give me any feedback, documentation updates > > and/or bug fixes. I'm especially interested in reviews from people that > > have embedded Lua in other projects or experts in Lua that can improve > the > > robustness of the menu code. > > > > Warner > > _______________________________________________ > > freebsd-current@freebsd.org mailing list > > https://lists.freebsd.org/mailman/listinfo/freebsd-current > > To unsubscribe, send any mail to "freebsd-current-unsubscribe@ > freebsd.org" > > Warner & Co, > > Great job all! Been wanting this for years, very excited to see it start > landing :) > > One question, if we switch to Lua loader in TrueOS, do you know if the > ZFS boot-environment menus have been implemented / tested yet? I don't think that they have been implemented yet. I've certainly not tested them. Warner
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