Date: Wed, 17 Jun 2020 10:52:50 -0700 (PDT) From: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net> To: "Simon J. Gerraty" <sjg@juniper.net> Cc: "Rodney W. Grimes" <freebsd-rwg@gndrsh.dnsmgr.net>, Miguel C <miguelmclara@gmail.com>, freebsd-current@freebsd.org Subject: Re: CTF: UEFI HTTP boot support Message-ID: <202006171752.05HHqo0E086454@gndrsh.dnsmgr.net> In-Reply-To: <46934.1592351291@kaos.jnpr.net>
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> Rodney W. Grimes <freebsd-rwg@gndrsh.dnsmgr.net> wrote: > > > The "fake cd drive" is in the kernel, loader just copies the iso into > > > memory like any other module, and by the time that's done you just > > > reboot into the newly installed system, which again uses > > > > > > vfs.root.mountfrom="cd9660:/dev/md0.uzip" > > ^^^ > > > > Argh, the cd9660 confused me, I think your doing a > > "root on mfs/md"? > > loader.conf says > > rootfs_load="yes" > rootfs_name="contents.izo" > rootfs_type="md_image" > vfs.root.mountfrom="cd9660:/dev/md0.uzip" > > contents.izo is uzip'd contents.iso which file(1) > describes as ISO 9660 CD-ROM filesystem data '' > > That's for normal boot, for the loader 'install' command > it expects an uncompressed iso for rootfs. Ok, now the puzzle is how much work to get from a stock FreeBSD .iso image to something that works with this. Obviously we need a non-stock /boot/loader.conf file, or to type some commands manually at a loader prompt. I believe the stock GENERIC kernel has the md_root support for this already, so it may not be that hard to do. -- Rod Grimes rgrimes@freebsd.org
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