<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <meta name="Generator" content="Microsoft Word 15 (filtered medium)"> <style></style> </head> <body lang="DE" link="blue" vlink="purple"> <div class="WordSection1"> <p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US">Hi!<o:p></o:p></span></p> <p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">AFAIR „ANSI“ terminal sequences were derived from a DEC vt100 or vt102, so no surprise when there is not much difference.<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">I’d suggest to “hexdump” the output to see what arrives via serial. Then you might decide which emulation to use.<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">I don’t know the details, but supporting a pure serial mode without cursor positioning might help (Remember: Those TTYs could not erase a character printed already, so they printed it again like /x/ to show that the x had been deleted </span><span lang="EN-US" style="font-family:"Segoe UI Emoji",sans-serif;color:#1F497D;mso-fareast-language:EN-US">😉</span><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">)<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Talking about the old times: Anybody still knowing vi’s “open mode” where you could only edit a single line (to save bandwidth)?<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Or the reduction of the screen size if the baud rate was just 300 baud? Welcome to a different world </span><span lang="EN-US" style="font-family:"Segoe UI Emoji",sans-serif;color:#1F497D;mso-fareast-language:EN-US">😉</span><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p> <div> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Kind regards,<o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US">Ulrich Windl<o:p></o:p></span></p> </div> <p class="MsoNormal"><span lang="EN-US" style="color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p> <div style="border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt"> <div> <div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm"> <p class="MsoNormal"><b>From:</b> systemd-devel <systemd-devel-bounces@lists.freedesktop.org> <b>On Behalf Of </b>Kevin P. Fleming<br> <b>Sent:</b> Tuesday, December 31, 2024 12:36 PM<br> <b>Cc:</b> Systemd <systemd-devel@lists.freedesktop.org><br> <b>Subject:</b> [EXT] Re: [systemd-devel] Expected terminal type for sd-boot on a serial console?<o:p></o:p></p> </div> </div> <p class="MsoNormal"><o:p> </o:p></p> <div> <p class="MsoNormal">Thanks, that was very helpful! As a further test I switched Minicom to 'ANSI' terminal emulation instead of 'VT102', but there was no improvement. Interestingly, U-boot's own menu displays highlighting as it should, but the sd-boot menu does not. I'll try to follow up with the U-boot project to see what might be going on with their UEFI implementation.<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">On Sat, Dec 28, 2024, at 19:24, Mantas Mikulėnas wrote:<o:p></o:p></p> </div> <blockquote style="margin-top:5.0pt;margin-bottom:5.0pt" id="qt"> <div> <div> <div> <div> <p class="MsoNormal">On Sat, Dec 28, 2024, 20:38 Kevin P. Fleming <<a href="mailto:lists.systemd-devel@kevin.km6g.us" target="_blank">lists.systemd-devel@kevin.km6g.us</a>> wrote:<o:p></o:p></p> </div> <blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <div> <p class="MsoNormal">I've got three machines which have serial (only) consoles, all of which are using sd-boot from systemd 257. I use Minicom, in VT102 mode, to connect to these machines, and while the console generally works, there is no 'highlighting' in the sd-boot menu. As a result it's rather difficult to choose a non-default entry to boot.<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">What terminal type is sd-boot expecting?<o:p></o:p></p> </div> </div> </blockquote> </div> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">None. It outputs text using the EFI ConOut interface, which is not a terminal-style interface at all – it's more like the DOS or Windows console, with discrete APIs for cursor positioning and text formatting [1].<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">It's your system firmware which decides how to translate those API calls to VT220 sequences or something similar.<o:p></o:p></p> </div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> <div> <p class="MsoNormal">[1]: <a href="https://uefi.org/specs/UEFI/2.9_A/12_Protocols_Console_Support.html#efi-simple-text-output-protocol"> https://uefi.org/specs/UEFI/2.9_A/12_Protocols_Console_Support.html#efi-simple-text-output-protocol</a><o:p></o:p></p> </div> <div> <div> <blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm"> <div> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> </div> </blockquote> </div> </div> </div> </blockquote> <div> <p class="MsoNormal"><o:p> </o:p></p> </div> </div> </div> </body> </html>