Date: Tue, 23 Jan 2024 04:55:14 +0100 From: Henrik Gulbrandsen <henrik@gulbra.net> To: Chuck Tuffli <chuck@freebsd.org> Cc: John Baldwin <jhb@freebsd.org>, freebsd-virtualization@freebsd.org Subject: Re: bhyve without UEFI questions Message-ID: <2f476600-0792-48a7-b4b2-c4082772a6c6@gulbra.net> In-Reply-To: <CAKAYmM%2Bh3JRLbGz3X_uYroWxvscaSJ-3TFVAbRKe957%2B1JuyuA@mail.gmail.com> References: <CAKAYmM%2Bh3JRLbGz3X_uYroWxvscaSJ-3TFVAbRKe957%2B1JuyuA@mail.gmail.com>
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This is a multi-part message in MIME format. --------------yJjRCWv0LH7lILt8twec6fJl Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 2024-01-22 23:57, Chuck Tuffli wrote: > I'm getting conflicting information and thought I'd ask here about > guest disk images without UEFI. > > 1. If bhyve can boot the image with uefi-csm, should I be able to get > a graphical console? I tried: > -s 6:0,fbuf,tcp=0.0.0.0:5900,vga=io > VNC connects, but the screen is blank. I saw some mentions of vga=on, > but that generates an error message. As far as I know, VGA emulation in bhyve still does not work as intended. I did some work to fix this back in 2019, but the patches were never merged: https://www.gulbra.net/freebsd-bhyve/ > 2. Instead of using uefi-csm, can bhyve boot SeaBIOS? I've tried -l > bootrom,/tmp/seabios/out/bios.bin but I'm not sure that is working. The problem is that you will need an emulated video card with its own Video BIOS, unless you pass through a real video device. My patches will give you that, but the code is non-trivial and has not been touched in almost five years. It would take some work to bring it up to date with the current baseline. I have been lingering on this list in the hope that someone with commit privileges would take an interest in BIOS booting and VGA graphics, but I guess most people only need UEFI nowadays. /Henrik --------------yJjRCWv0LH7lILt8twec6fJl Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <div class="moz-cite-prefix"> On 2024-01-22 23:57, Chuck Tuffli wrote:<br> </div> <blockquote type="cite" cite="mid:CAKAYmM+h3JRLbGz3X_uYroWxvscaSJ-3TFVAbRKe957+1JuyuA@mail.gmail.com"> <pre class="moz-quote-pre" wrap="">I'm getting conflicting information and thought I'd ask here about guest disk images without UEFI. 1. If bhyve can boot the image with uefi-csm, should I be able to get a graphical console? I tried: -s 6:0,fbuf,tcp=0.0.0.0:5900,vga=io VNC connects, but the screen is blank. I saw some mentions of vga=on, but that generates an error message.</pre> </blockquote> <br> As far as I know, VGA emulation in bhyve still does not work as intended.<br> <br> I did some work to fix this back in 2019, but the patches were never merged:<br> <br> <a href="https://www.gulbra.net/freebsd-bhyve/" class="moz-txt-link-freetext">https://www.gulbra.net/freebsd-bhyve/</a><br>; <br> <span style="white-space: pre-wrap"> </span> <blockquote type="cite" cite="mid:CAKAYmM+h3JRLbGz3X_uYroWxvscaSJ-3TFVAbRKe957+1JuyuA@mail.gmail.com"> <pre class="moz-quote-pre" wrap="">2. Instead of using uefi-csm, can bhyve boot SeaBIOS? I've tried -l bootrom,/tmp/seabios/out/bios.bin but I'm not sure that is working. </pre> </blockquote> <br> The problem is that you will need an emulated video card with its own Video BIOS, unless you pass through a real video device. My patches will give you that, but the code is non-trivial and has not been touched in almost five years. It would take some work to bring it up to date with the current baseline. I have been lingering on this list in the hope that someone with commit privileges would take an interest in BIOS booting and VGA graphics, but I guess most people only need UEFI nowadays.<br> <br> /Henrik<br> <br> </body> </html> --------------yJjRCWv0LH7lILt8twec6fJl--
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